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e2f34481 NJ |
1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* | |
3 | * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org> | |
4 | * Copyright (C) 2018 Samsung Electronics Co., Ltd. | |
5 | */ | |
6 | ||
7 | #include <linux/inetdevice.h> | |
8 | #include <net/addrconf.h> | |
9 | #include <linux/syscalls.h> | |
10 | #include <linux/namei.h> | |
11 | #include <linux/statfs.h> | |
12 | #include <linux/ethtool.h> | |
e8c06191 | 13 | #include <linux/falloc.h> |
02655a70 | 14 | #include <linux/mount.h> |
e2f34481 NJ |
15 | |
16 | #include "glob.h" | |
e2f34481 NJ |
17 | #include "smbfsctl.h" |
18 | #include "oplock.h" | |
19 | #include "smbacl.h" | |
20 | ||
21 | #include "auth.h" | |
22 | #include "asn1.h" | |
e2f34481 NJ |
23 | #include "connection.h" |
24 | #include "transport_ipc.h" | |
03d8d4f1 | 25 | #include "transport_rdma.h" |
e2f34481 NJ |
26 | #include "vfs.h" |
27 | #include "vfs_cache.h" | |
28 | #include "misc.h" | |
29 | ||
e2f34481 NJ |
30 | #include "server.h" |
31 | #include "smb_common.h" | |
32 | #include "smbstatus.h" | |
33 | #include "ksmbd_work.h" | |
34 | #include "mgmt/user_config.h" | |
35 | #include "mgmt/share_config.h" | |
36 | #include "mgmt/tree_connect.h" | |
37 | #include "mgmt/user_session.h" | |
38 | #include "mgmt/ksmbd_ida.h" | |
39 | #include "ndr.h" | |
40 | ||
41 | static void __wbuf(struct ksmbd_work *work, void **req, void **rsp) | |
42 | { | |
43 | if (work->next_smb2_rcv_hdr_off) { | |
8a893315 NJ |
44 | *req = ksmbd_req_buf_next(work); |
45 | *rsp = ksmbd_resp_buf_next(work); | |
e2f34481 | 46 | } else { |
cb451720 NJ |
47 | *req = smb2_get_msg(work->request_buf); |
48 | *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
49 | } |
50 | } | |
51 | ||
52 | #define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs)) | |
53 | ||
54 | /** | |
55 | * check_session_id() - check for valid session id in smb header | |
56 | * @conn: connection instance | |
57 | * @id: session id from smb header | |
58 | * | |
59 | * Return: 1 if valid session id, otherwise 0 | |
60 | */ | |
f4228b67 | 61 | static inline bool check_session_id(struct ksmbd_conn *conn, u64 id) |
e2f34481 NJ |
62 | { |
63 | struct ksmbd_session *sess; | |
64 | ||
65 | if (id == 0 || id == -1) | |
f4228b67 | 66 | return false; |
e2f34481 | 67 | |
f5a544e3 | 68 | sess = ksmbd_session_lookup_all(conn, id); |
e2f34481 | 69 | if (sess) |
f4228b67 | 70 | return true; |
bde1694a | 71 | pr_err("Invalid user session id: %llu\n", id); |
f4228b67 | 72 | return false; |
e2f34481 NJ |
73 | } |
74 | ||
f5a544e3 | 75 | struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn) |
e2f34481 NJ |
76 | { |
77 | struct channel *chann; | |
e2f34481 | 78 | |
6f3d5eee | 79 | list_for_each_entry(chann, &sess->ksmbd_chann_list, chann_list) { |
560ac051 | 80 | if (chann->conn == conn) |
e2f34481 NJ |
81 | return chann; |
82 | } | |
83 | ||
84 | return NULL; | |
85 | } | |
86 | ||
87 | /** | |
5ec3df8e | 88 | * smb2_get_ksmbd_tcon() - get tree connection information using a tree id. |
95fa1ce9 | 89 | * @work: smb work |
e2f34481 | 90 | * |
5ec3df8e NJ |
91 | * Return: 0 if there is a tree connection matched or these are |
92 | * skipable commands, otherwise error | |
e2f34481 NJ |
93 | */ |
94 | int smb2_get_ksmbd_tcon(struct ksmbd_work *work) | |
95 | { | |
cb451720 | 96 | struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf); |
341b1601 | 97 | unsigned int cmd = le16_to_cpu(req_hdr->Command); |
e2f34481 NJ |
98 | int tree_id; |
99 | ||
100 | work->tcon = NULL; | |
341b1601 RB |
101 | if (cmd == SMB2_TREE_CONNECT_HE || |
102 | cmd == SMB2_CANCEL_HE || | |
103 | cmd == SMB2_LOGOFF_HE) { | |
e2f34481 NJ |
104 | ksmbd_debug(SMB, "skip to check tree connect request\n"); |
105 | return 0; | |
106 | } | |
107 | ||
02b68b20 | 108 | if (xa_empty(&work->sess->tree_conns)) { |
e2f34481 | 109 | ksmbd_debug(SMB, "NO tree connected\n"); |
c6ce2b57 | 110 | return -ENOENT; |
e2f34481 NJ |
111 | } |
112 | ||
113 | tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId); | |
114 | work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id); | |
115 | if (!work->tcon) { | |
bde1694a | 116 | pr_err("Invalid tid %d\n", tree_id); |
c6ce2b57 | 117 | return -EINVAL; |
e2f34481 NJ |
118 | } |
119 | ||
120 | return 1; | |
121 | } | |
122 | ||
123 | /** | |
124 | * smb2_set_err_rsp() - set error response code on smb response | |
125 | * @work: smb work containing response buffer | |
126 | */ | |
127 | void smb2_set_err_rsp(struct ksmbd_work *work) | |
128 | { | |
129 | struct smb2_err_rsp *err_rsp; | |
130 | ||
131 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 132 | err_rsp = ksmbd_resp_buf_next(work); |
e2f34481 | 133 | else |
cb451720 | 134 | err_rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
135 | |
136 | if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) { | |
137 | err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE; | |
138 | err_rsp->ErrorContextCount = 0; | |
139 | err_rsp->Reserved = 0; | |
140 | err_rsp->ByteCount = 0; | |
141 | err_rsp->ErrorData[0] = 0; | |
e5066499 | 142 | inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2); |
e2f34481 NJ |
143 | } |
144 | } | |
145 | ||
146 | /** | |
147 | * is_smb2_neg_cmd() - is it smb2 negotiation command | |
148 | * @work: smb work containing smb header | |
149 | * | |
f4228b67 | 150 | * Return: true if smb2 negotiation command, otherwise false |
e2f34481 | 151 | */ |
f4228b67 | 152 | bool is_smb2_neg_cmd(struct ksmbd_work *work) |
e2f34481 | 153 | { |
cb451720 | 154 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
155 | |
156 | /* is it SMB2 header ? */ | |
157 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
f4228b67 | 158 | return false; |
e2f34481 NJ |
159 | |
160 | /* make sure it is request not response message */ | |
161 | if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR) | |
f4228b67 | 162 | return false; |
e2f34481 NJ |
163 | |
164 | if (hdr->Command != SMB2_NEGOTIATE) | |
f4228b67 | 165 | return false; |
e2f34481 | 166 | |
f4228b67 | 167 | return true; |
e2f34481 NJ |
168 | } |
169 | ||
170 | /** | |
171 | * is_smb2_rsp() - is it smb2 response | |
172 | * @work: smb work containing smb response buffer | |
173 | * | |
f4228b67 | 174 | * Return: true if smb2 response, otherwise false |
e2f34481 | 175 | */ |
f4228b67 | 176 | bool is_smb2_rsp(struct ksmbd_work *work) |
e2f34481 | 177 | { |
cb451720 | 178 | struct smb2_hdr *hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
179 | |
180 | /* is it SMB2 header ? */ | |
181 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
f4228b67 | 182 | return false; |
e2f34481 NJ |
183 | |
184 | /* make sure it is response not request message */ | |
185 | if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)) | |
f4228b67 | 186 | return false; |
e2f34481 | 187 | |
f4228b67 | 188 | return true; |
e2f34481 NJ |
189 | } |
190 | ||
191 | /** | |
192 | * get_smb2_cmd_val() - get smb command code from smb header | |
193 | * @work: smb work containing smb request buffer | |
194 | * | |
195 | * Return: smb2 request command value | |
196 | */ | |
fc2d1b58 | 197 | u16 get_smb2_cmd_val(struct ksmbd_work *work) |
e2f34481 NJ |
198 | { |
199 | struct smb2_hdr *rcv_hdr; | |
200 | ||
201 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 202 | rcv_hdr = ksmbd_req_buf_next(work); |
e2f34481 | 203 | else |
cb451720 | 204 | rcv_hdr = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
205 | return le16_to_cpu(rcv_hdr->Command); |
206 | } | |
207 | ||
208 | /** | |
209 | * set_smb2_rsp_status() - set error response code on smb2 header | |
210 | * @work: smb work containing response buffer | |
95fa1ce9 | 211 | * @err: error response code |
e2f34481 NJ |
212 | */ |
213 | void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err) | |
214 | { | |
215 | struct smb2_hdr *rsp_hdr; | |
216 | ||
217 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 218 | rsp_hdr = ksmbd_resp_buf_next(work); |
e2f34481 | 219 | else |
cb451720 | 220 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
221 | rsp_hdr->Status = err; |
222 | smb2_set_err_rsp(work); | |
223 | } | |
224 | ||
225 | /** | |
226 | * init_smb2_neg_rsp() - initialize smb2 response for negotiate command | |
227 | * @work: smb work containing smb request buffer | |
228 | * | |
229 | * smb2 negotiate response is sent in reply of smb1 negotiate command for | |
230 | * dialect auto-negotiation. | |
231 | */ | |
232 | int init_smb2_neg_rsp(struct ksmbd_work *work) | |
233 | { | |
234 | struct smb2_hdr *rsp_hdr; | |
235 | struct smb2_negotiate_rsp *rsp; | |
236 | struct ksmbd_conn *conn = work->conn; | |
237 | ||
238 | if (conn->need_neg == false) | |
239 | return -EINVAL; | |
e2f34481 | 240 | |
cb451720 NJ |
241 | *(__be32 *)work->response_buf = |
242 | cpu_to_be32(conn->vals->header_size); | |
e2f34481 | 243 | |
cb451720 | 244 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 | 245 | memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); |
e2f34481 NJ |
246 | rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; |
247 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; | |
248 | rsp_hdr->CreditRequest = cpu_to_le16(2); | |
249 | rsp_hdr->Command = SMB2_NEGOTIATE; | |
250 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); | |
251 | rsp_hdr->NextCommand = 0; | |
252 | rsp_hdr->MessageId = 0; | |
253 | rsp_hdr->Id.SyncId.ProcessId = 0; | |
254 | rsp_hdr->Id.SyncId.TreeId = 0; | |
255 | rsp_hdr->SessionId = 0; | |
256 | memset(rsp_hdr->Signature, 0, 16); | |
257 | ||
cb451720 | 258 | rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
259 | |
260 | WARN_ON(ksmbd_conn_good(work)); | |
261 | ||
262 | rsp->StructureSize = cpu_to_le16(65); | |
263 | ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect); | |
264 | rsp->DialectRevision = cpu_to_le16(conn->dialect); | |
265 | /* Not setting conn guid rsp->ServerGUID, as it | |
266 | * not used by client for identifying connection | |
267 | */ | |
268 | rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
269 | /* Default Max Message Size till SMB2.0, 64K*/ | |
270 | rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); | |
271 | rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); | |
272 | rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); | |
273 | ||
274 | rsp->SystemTime = cpu_to_le64(ksmbd_systime()); | |
275 | rsp->ServerStartTime = 0; | |
276 | ||
277 | rsp->SecurityBufferOffset = cpu_to_le16(128); | |
278 | rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); | |
cb451720 | 279 | ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) + |
e2f34481 | 280 | le16_to_cpu(rsp->SecurityBufferOffset)); |
cb451720 NJ |
281 | inc_rfc1001_len(work->response_buf, |
282 | sizeof(struct smb2_negotiate_rsp) - | |
283 | sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) + | |
284 | AUTH_GSS_LENGTH); | |
e2f34481 NJ |
285 | rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; |
286 | if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) | |
287 | rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; | |
288 | conn->use_spnego = true; | |
289 | ||
290 | ksmbd_conn_set_need_negotiate(work); | |
291 | return 0; | |
292 | } | |
293 | ||
e2f34481 NJ |
294 | /** |
295 | * smb2_set_rsp_credits() - set number of credits in response buffer | |
296 | * @work: smb work containing smb response buffer | |
297 | */ | |
298 | int smb2_set_rsp_credits(struct ksmbd_work *work) | |
299 | { | |
8a893315 NJ |
300 | struct smb2_hdr *req_hdr = ksmbd_req_buf_next(work); |
301 | struct smb2_hdr *hdr = ksmbd_resp_buf_next(work); | |
e2f34481 | 302 | struct ksmbd_conn *conn = work->conn; |
914d7e57 | 303 | unsigned short credits_requested, aux_max; |
bf8acc9e | 304 | unsigned short credit_charge, credits_granted = 0; |
e2f34481 | 305 | |
bf8acc9e HL |
306 | if (work->send_no_response) |
307 | return 0; | |
e2f34481 | 308 | |
bf8acc9e | 309 | hdr->CreditCharge = req_hdr->CreditCharge; |
e2f34481 | 310 | |
004443b3 | 311 | if (conn->total_credits > conn->vals->max_credits) { |
bf8acc9e | 312 | hdr->CreditRequest = 0; |
bde1694a | 313 | pr_err("Total credits overflow: %d\n", conn->total_credits); |
bf8acc9e | 314 | return -EINVAL; |
e2f34481 NJ |
315 | } |
316 | ||
bf8acc9e HL |
317 | credit_charge = max_t(unsigned short, |
318 | le16_to_cpu(req_hdr->CreditCharge), 1); | |
914d7e57 NJ |
319 | if (credit_charge > conn->total_credits) { |
320 | ksmbd_debug(SMB, "Insufficient credits granted, given: %u, granted: %u\n", | |
321 | credit_charge, conn->total_credits); | |
322 | return -EINVAL; | |
323 | } | |
324 | ||
325 | conn->total_credits -= credit_charge; | |
b589f5db | 326 | conn->outstanding_credits -= credit_charge; |
bf8acc9e HL |
327 | credits_requested = max_t(unsigned short, |
328 | le16_to_cpu(req_hdr->CreditRequest), 1); | |
e2f34481 | 329 | |
bf8acc9e HL |
330 | /* according to smb2.credits smbtorture, Windows server |
331 | * 2016 or later grant up to 8192 credits at once. | |
332 | * | |
333 | * TODO: Need to adjuct CreditRequest value according to | |
334 | * current cpu load | |
335 | */ | |
bf8acc9e | 336 | if (hdr->Command == SMB2_NEGOTIATE) |
914d7e57 | 337 | aux_max = 1; |
bf8acc9e | 338 | else |
004443b3 | 339 | aux_max = conn->vals->max_credits - credit_charge; |
914d7e57 | 340 | credits_granted = min_t(unsigned short, credits_requested, aux_max); |
bf8acc9e | 341 | |
004443b3 NJ |
342 | if (conn->vals->max_credits - conn->total_credits < credits_granted) |
343 | credits_granted = conn->vals->max_credits - | |
bf8acc9e | 344 | conn->total_credits; |
e2f34481 NJ |
345 | |
346 | conn->total_credits += credits_granted; | |
347 | work->credits_granted += credits_granted; | |
348 | ||
349 | if (!req_hdr->NextCommand) { | |
350 | /* Update CreditRequest in last request */ | |
351 | hdr->CreditRequest = cpu_to_le16(work->credits_granted); | |
352 | } | |
e2f34481 | 353 | ksmbd_debug(SMB, |
070fb21e NJ |
354 | "credits: requested[%d] granted[%d] total_granted[%d]\n", |
355 | credits_requested, credits_granted, | |
356 | conn->total_credits); | |
e2f34481 NJ |
357 | return 0; |
358 | } | |
359 | ||
360 | /** | |
361 | * init_chained_smb2_rsp() - initialize smb2 chained response | |
362 | * @work: smb work containing smb response buffer | |
363 | */ | |
364 | static void init_chained_smb2_rsp(struct ksmbd_work *work) | |
365 | { | |
8a893315 NJ |
366 | struct smb2_hdr *req = ksmbd_req_buf_next(work); |
367 | struct smb2_hdr *rsp = ksmbd_resp_buf_next(work); | |
e2f34481 NJ |
368 | struct smb2_hdr *rsp_hdr; |
369 | struct smb2_hdr *rcv_hdr; | |
370 | int next_hdr_offset = 0; | |
371 | int len, new_len; | |
372 | ||
373 | /* Len of this response = updated RFC len - offset of previous cmd | |
374 | * in the compound rsp | |
375 | */ | |
376 | ||
377 | /* Storing the current local FID which may be needed by subsequent | |
378 | * command in the compound request | |
379 | */ | |
380 | if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) { | |
2d004c6c PA |
381 | work->compound_fid = ((struct smb2_create_rsp *)rsp)->VolatileFileId; |
382 | work->compound_pfid = ((struct smb2_create_rsp *)rsp)->PersistentFileId; | |
e2f34481 NJ |
383 | work->compound_sid = le64_to_cpu(rsp->SessionId); |
384 | } | |
385 | ||
e5066499 | 386 | len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off; |
e2f34481 NJ |
387 | next_hdr_offset = le32_to_cpu(req->NextCommand); |
388 | ||
389 | new_len = ALIGN(len, 8); | |
cb451720 NJ |
390 | inc_rfc1001_len(work->response_buf, |
391 | sizeof(struct smb2_hdr) + new_len - len); | |
e2f34481 NJ |
392 | rsp->NextCommand = cpu_to_le32(new_len); |
393 | ||
394 | work->next_smb2_rcv_hdr_off += next_hdr_offset; | |
395 | work->next_smb2_rsp_hdr_off += new_len; | |
396 | ksmbd_debug(SMB, | |
070fb21e NJ |
397 | "Compound req new_len = %d rcv off = %d rsp off = %d\n", |
398 | new_len, work->next_smb2_rcv_hdr_off, | |
399 | work->next_smb2_rsp_hdr_off); | |
e2f34481 | 400 | |
8a893315 NJ |
401 | rsp_hdr = ksmbd_resp_buf_next(work); |
402 | rcv_hdr = ksmbd_req_buf_next(work); | |
e2f34481 NJ |
403 | |
404 | if (!(rcv_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { | |
405 | ksmbd_debug(SMB, "related flag should be set\n"); | |
406 | work->compound_fid = KSMBD_NO_FID; | |
407 | work->compound_pfid = KSMBD_NO_FID; | |
408 | } | |
cb451720 | 409 | memset((char *)rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); |
18a015bc | 410 | rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; |
e2f34481 NJ |
411 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; |
412 | rsp_hdr->Command = rcv_hdr->Command; | |
413 | ||
414 | /* | |
415 | * Message is response. We don't grant oplock yet. | |
416 | */ | |
417 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR | | |
418 | SMB2_FLAGS_RELATED_OPERATIONS); | |
419 | rsp_hdr->NextCommand = 0; | |
420 | rsp_hdr->MessageId = rcv_hdr->MessageId; | |
421 | rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; | |
422 | rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; | |
423 | rsp_hdr->SessionId = rcv_hdr->SessionId; | |
424 | memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); | |
425 | } | |
426 | ||
427 | /** | |
428 | * is_chained_smb2_message() - check for chained command | |
429 | * @work: smb work containing smb request buffer | |
430 | * | |
431 | * Return: true if chained request, otherwise false | |
432 | */ | |
433 | bool is_chained_smb2_message(struct ksmbd_work *work) | |
434 | { | |
cb451720 | 435 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
d72a9c15 | 436 | unsigned int len, next_cmd; |
e2f34481 NJ |
437 | |
438 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
439 | return false; | |
440 | ||
8a893315 | 441 | hdr = ksmbd_req_buf_next(work); |
d72a9c15 NJ |
442 | next_cmd = le32_to_cpu(hdr->NextCommand); |
443 | if (next_cmd > 0) { | |
444 | if ((u64)work->next_smb2_rcv_hdr_off + next_cmd + | |
445 | __SMB2_HEADER_STRUCTURE_SIZE > | |
446 | get_rfc1002_len(work->request_buf)) { | |
447 | pr_err("next command(%u) offset exceeds smb msg size\n", | |
448 | next_cmd); | |
449 | return false; | |
450 | } | |
451 | ||
dbad6300 NJ |
452 | if ((u64)get_rfc1002_len(work->response_buf) + MAX_CIFS_SMALL_BUFFER_SIZE > |
453 | work->response_sz) { | |
454 | pr_err("next response offset exceeds response buffer size\n"); | |
455 | return false; | |
456 | } | |
457 | ||
e2f34481 NJ |
458 | ksmbd_debug(SMB, "got SMB2 chained command\n"); |
459 | init_chained_smb2_rsp(work); | |
460 | return true; | |
461 | } else if (work->next_smb2_rcv_hdr_off) { | |
462 | /* | |
463 | * This is last request in chained command, | |
464 | * align response to 8 byte | |
465 | */ | |
e5066499 NJ |
466 | len = ALIGN(get_rfc1002_len(work->response_buf), 8); |
467 | len = len - get_rfc1002_len(work->response_buf); | |
e2f34481 NJ |
468 | if (len) { |
469 | ksmbd_debug(SMB, "padding len %u\n", len); | |
e5066499 NJ |
470 | inc_rfc1001_len(work->response_buf, len); |
471 | if (work->aux_payload_sz) | |
e2f34481 NJ |
472 | work->aux_payload_sz += len; |
473 | } | |
474 | } | |
475 | return false; | |
476 | } | |
477 | ||
478 | /** | |
479 | * init_smb2_rsp_hdr() - initialize smb2 response | |
480 | * @work: smb work containing smb request buffer | |
481 | * | |
482 | * Return: 0 | |
483 | */ | |
484 | int init_smb2_rsp_hdr(struct ksmbd_work *work) | |
485 | { | |
cb451720 NJ |
486 | struct smb2_hdr *rsp_hdr = smb2_get_msg(work->response_buf); |
487 | struct smb2_hdr *rcv_hdr = smb2_get_msg(work->request_buf); | |
e2f34481 NJ |
488 | struct ksmbd_conn *conn = work->conn; |
489 | ||
490 | memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); | |
cb451720 NJ |
491 | *(__be32 *)work->response_buf = |
492 | cpu_to_be32(conn->vals->header_size); | |
e2f34481 NJ |
493 | rsp_hdr->ProtocolId = rcv_hdr->ProtocolId; |
494 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; | |
495 | rsp_hdr->Command = rcv_hdr->Command; | |
496 | ||
497 | /* | |
498 | * Message is response. We don't grant oplock yet. | |
499 | */ | |
500 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); | |
501 | rsp_hdr->NextCommand = 0; | |
502 | rsp_hdr->MessageId = rcv_hdr->MessageId; | |
503 | rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; | |
504 | rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; | |
505 | rsp_hdr->SessionId = rcv_hdr->SessionId; | |
506 | memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); | |
507 | ||
508 | work->syncronous = true; | |
509 | if (work->async_id) { | |
d40012a8 | 510 | ksmbd_release_id(&conn->async_ida, work->async_id); |
e2f34481 NJ |
511 | work->async_id = 0; |
512 | } | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
517 | /** | |
518 | * smb2_allocate_rsp_buf() - allocate smb2 response buffer | |
519 | * @work: smb work containing smb request buffer | |
520 | * | |
521 | * Return: 0 on success, otherwise -ENOMEM | |
522 | */ | |
523 | int smb2_allocate_rsp_buf(struct ksmbd_work *work) | |
524 | { | |
cb451720 | 525 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 526 | size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE; |
4bc59477 | 527 | size_t large_sz = small_sz + work->conn->vals->max_trans_size; |
e2f34481 NJ |
528 | size_t sz = small_sz; |
529 | int cmd = le16_to_cpu(hdr->Command); | |
530 | ||
c30f4eb8 | 531 | if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE) |
e2f34481 | 532 | sz = large_sz; |
e2f34481 NJ |
533 | |
534 | if (cmd == SMB2_QUERY_INFO_HE) { | |
535 | struct smb2_query_info_req *req; | |
536 | ||
cb451720 | 537 | req = smb2_get_msg(work->request_buf); |
8f054118 NJ |
538 | if ((req->InfoType == SMB2_O_INFO_FILE && |
539 | (req->FileInfoClass == FILE_FULL_EA_INFORMATION || | |
540 | req->FileInfoClass == FILE_ALL_INFORMATION)) || | |
541 | req->InfoType == SMB2_O_INFO_SECURITY) | |
e2f34481 | 542 | sz = large_sz; |
e2f34481 NJ |
543 | } |
544 | ||
545 | /* allocate large response buf for chained commands */ | |
546 | if (le32_to_cpu(hdr->NextCommand) > 0) | |
547 | sz = large_sz; | |
548 | ||
c30f4eb8 | 549 | work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO); |
63c454f8 | 550 | if (!work->response_buf) |
e2f34481 | 551 | return -ENOMEM; |
e2f34481 NJ |
552 | |
553 | work->response_sz = sz; | |
554 | return 0; | |
555 | } | |
556 | ||
557 | /** | |
558 | * smb2_check_user_session() - check for valid session for a user | |
559 | * @work: smb work containing smb request buffer | |
560 | * | |
561 | * Return: 0 on success, otherwise error | |
562 | */ | |
563 | int smb2_check_user_session(struct ksmbd_work *work) | |
564 | { | |
cb451720 | 565 | struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
566 | struct ksmbd_conn *conn = work->conn; |
567 | unsigned int cmd = conn->ops->get_cmd_val(work); | |
568 | unsigned long long sess_id; | |
569 | ||
570 | work->sess = NULL; | |
571 | /* | |
572 | * SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not | |
573 | * require a session id, so no need to validate user session's for | |
574 | * these commands. | |
575 | */ | |
576 | if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE || | |
64b39f4a | 577 | cmd == SMB2_SESSION_SETUP_HE) |
e2f34481 NJ |
578 | return 0; |
579 | ||
580 | if (!ksmbd_conn_good(work)) | |
581 | return -EINVAL; | |
582 | ||
583 | sess_id = le64_to_cpu(req_hdr->SessionId); | |
584 | /* Check for validity of user session */ | |
f5a544e3 | 585 | work->sess = ksmbd_session_lookup_all(conn, sess_id); |
e2f34481 NJ |
586 | if (work->sess) |
587 | return 1; | |
588 | ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id); | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
e4d3e6b5 NJ |
592 | static void destroy_previous_session(struct ksmbd_conn *conn, |
593 | struct ksmbd_user *user, u64 id) | |
e2f34481 NJ |
594 | { |
595 | struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id); | |
596 | struct ksmbd_user *prev_user; | |
17ea92a9 | 597 | struct channel *chann; |
e2f34481 NJ |
598 | |
599 | if (!prev_sess) | |
600 | return; | |
601 | ||
602 | prev_user = prev_sess->user; | |
603 | ||
1fca8038 MM |
604 | if (!prev_user || |
605 | strcmp(user->name, prev_user->name) || | |
e2f34481 | 606 | user->passkey_sz != prev_user->passkey_sz || |
af7c39d9 | 607 | memcmp(user->passkey, prev_user->passkey, user->passkey_sz)) |
e2f34481 | 608 | return; |
e2f34481 | 609 | |
17ea92a9 NJ |
610 | prev_sess->state = SMB2_SESSION_EXPIRED; |
611 | write_lock(&prev_sess->chann_lock); | |
612 | list_for_each_entry(chann, &prev_sess->ksmbd_chann_list, chann_list) | |
613 | chann->conn->status = KSMBD_SESS_EXITING; | |
614 | write_unlock(&prev_sess->chann_lock); | |
e2f34481 NJ |
615 | } |
616 | ||
617 | /** | |
618 | * smb2_get_name() - get filename string from on the wire smb format | |
619 | * @src: source buffer | |
620 | * @maxlen: maxlen of source string | |
d4eeb826 | 621 | * @local_nls: nls_table pointer |
e2f34481 NJ |
622 | * |
623 | * Return: matching converted filename on success, otherwise error ptr | |
624 | */ | |
625 | static char * | |
80917f17 | 626 | smb2_get_name(const char *src, const int maxlen, struct nls_table *local_nls) |
e2f34481 | 627 | { |
265fd199 | 628 | char *name; |
e2f34481 | 629 | |
64b39f4a | 630 | name = smb_strndup_from_utf16(src, maxlen, 1, local_nls); |
e2f34481 | 631 | if (IS_ERR(name)) { |
bde1694a | 632 | pr_err("failed to get name %ld\n", PTR_ERR(name)); |
e2f34481 NJ |
633 | return name; |
634 | } | |
635 | ||
265fd199 HL |
636 | ksmbd_conv_path_to_unix(name); |
637 | ksmbd_strip_last_slash(name); | |
638 | return name; | |
e2f34481 NJ |
639 | } |
640 | ||
e2f34481 NJ |
641 | int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg) |
642 | { | |
643 | struct smb2_hdr *rsp_hdr; | |
644 | struct ksmbd_conn *conn = work->conn; | |
645 | int id; | |
646 | ||
cb451720 | 647 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
648 | rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND; |
649 | ||
d40012a8 | 650 | id = ksmbd_acquire_async_msg_id(&conn->async_ida); |
e2f34481 | 651 | if (id < 0) { |
bde1694a | 652 | pr_err("Failed to alloc async message id\n"); |
e2f34481 NJ |
653 | return id; |
654 | } | |
655 | work->syncronous = false; | |
656 | work->async_id = id; | |
657 | rsp_hdr->Id.AsyncId = cpu_to_le64(id); | |
658 | ||
659 | ksmbd_debug(SMB, | |
070fb21e NJ |
660 | "Send interim Response to inform async request id : %d\n", |
661 | work->async_id); | |
e2f34481 NJ |
662 | |
663 | work->cancel_fn = fn; | |
664 | work->cancel_argv = arg; | |
665 | ||
6c4e675a NJ |
666 | if (list_empty(&work->async_request_entry)) { |
667 | spin_lock(&conn->request_lock); | |
668 | list_add_tail(&work->async_request_entry, &conn->async_requests); | |
669 | spin_unlock(&conn->request_lock); | |
670 | } | |
e2f34481 NJ |
671 | |
672 | return 0; | |
673 | } | |
674 | ||
675 | void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status) | |
676 | { | |
677 | struct smb2_hdr *rsp_hdr; | |
678 | ||
cb451720 | 679 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
680 | smb2_set_err_rsp(work); |
681 | rsp_hdr->Status = status; | |
682 | ||
683 | work->multiRsp = 1; | |
684 | ksmbd_conn_write(work); | |
685 | rsp_hdr->Status = 0; | |
686 | work->multiRsp = 0; | |
687 | } | |
688 | ||
689 | static __le32 smb2_get_reparse_tag_special_file(umode_t mode) | |
690 | { | |
691 | if (S_ISDIR(mode) || S_ISREG(mode)) | |
692 | return 0; | |
693 | ||
694 | if (S_ISLNK(mode)) | |
695 | return IO_REPARSE_TAG_LX_SYMLINK_LE; | |
696 | else if (S_ISFIFO(mode)) | |
697 | return IO_REPARSE_TAG_LX_FIFO_LE; | |
698 | else if (S_ISSOCK(mode)) | |
699 | return IO_REPARSE_TAG_AF_UNIX_LE; | |
700 | else if (S_ISCHR(mode)) | |
701 | return IO_REPARSE_TAG_LX_CHR_LE; | |
702 | else if (S_ISBLK(mode)) | |
703 | return IO_REPARSE_TAG_LX_BLK_LE; | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
708 | /** | |
709 | * smb2_get_dos_mode() - get file mode in dos format from unix mode | |
710 | * @stat: kstat containing file mode | |
95fa1ce9 | 711 | * @attribute: attribute flags |
e2f34481 NJ |
712 | * |
713 | * Return: converted dos mode | |
714 | */ | |
715 | static int smb2_get_dos_mode(struct kstat *stat, int attribute) | |
716 | { | |
717 | int attr = 0; | |
718 | ||
64b39f4a | 719 | if (S_ISDIR(stat->mode)) { |
26a2787d RS |
720 | attr = FILE_ATTRIBUTE_DIRECTORY | |
721 | (attribute & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)); | |
64b39f4a | 722 | } else { |
26a2787d RS |
723 | attr = (attribute & 0x00005137) | FILE_ATTRIBUTE_ARCHIVE; |
724 | attr &= ~(FILE_ATTRIBUTE_DIRECTORY); | |
e2f34481 NJ |
725 | if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps & |
726 | FILE_SUPPORTS_SPARSE_FILES)) | |
26a2787d | 727 | attr |= FILE_ATTRIBUTE_SPARSE_FILE; |
e2f34481 NJ |
728 | |
729 | if (smb2_get_reparse_tag_special_file(stat->mode)) | |
26a2787d | 730 | attr |= FILE_ATTRIBUTE_REPARSE_POINT; |
e2f34481 NJ |
731 | } |
732 | ||
733 | return attr; | |
734 | } | |
735 | ||
736 | static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt, | |
070fb21e | 737 | __le16 hash_id) |
e2f34481 NJ |
738 | { |
739 | pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES; | |
740 | pneg_ctxt->DataLength = cpu_to_le16(38); | |
741 | pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1); | |
742 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
743 | pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE); | |
744 | get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE); | |
745 | pneg_ctxt->HashAlgorithms = hash_id; | |
746 | } | |
747 | ||
748 | static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt, | |
070fb21e | 749 | __le16 cipher_type) |
e2f34481 NJ |
750 | { |
751 | pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES; | |
752 | pneg_ctxt->DataLength = cpu_to_le16(4); | |
753 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
754 | pneg_ctxt->CipherCount = cpu_to_le16(1); | |
755 | pneg_ctxt->Ciphers[0] = cipher_type; | |
756 | } | |
757 | ||
d6c9ad23 | 758 | static void build_compression_ctxt(struct smb2_compression_capabilities_context *pneg_ctxt, |
070fb21e | 759 | __le16 comp_algo) |
e2f34481 NJ |
760 | { |
761 | pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES; | |
762 | pneg_ctxt->DataLength = | |
d6c9ad23 | 763 | cpu_to_le16(sizeof(struct smb2_compression_capabilities_context) |
e2f34481 NJ |
764 | - sizeof(struct smb2_neg_context)); |
765 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
766 | pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1); | |
d6c9ad23 | 767 | pneg_ctxt->Flags = cpu_to_le32(0); |
e2f34481 NJ |
768 | pneg_ctxt->CompressionAlgorithms[0] = comp_algo; |
769 | } | |
770 | ||
378087cd NJ |
771 | static void build_sign_cap_ctxt(struct smb2_signing_capabilities *pneg_ctxt, |
772 | __le16 sign_algo) | |
773 | { | |
774 | pneg_ctxt->ContextType = SMB2_SIGNING_CAPABILITIES; | |
775 | pneg_ctxt->DataLength = | |
776 | cpu_to_le16((sizeof(struct smb2_signing_capabilities) + 2) | |
777 | - sizeof(struct smb2_neg_context)); | |
778 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
779 | pneg_ctxt->SigningAlgorithmCount = cpu_to_le16(1); | |
780 | pneg_ctxt->SigningAlgorithms[0] = sign_algo; | |
781 | } | |
782 | ||
64b39f4a | 783 | static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) |
e2f34481 NJ |
784 | { |
785 | pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE; | |
786 | pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); | |
787 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ | |
788 | pneg_ctxt->Name[0] = 0x93; | |
789 | pneg_ctxt->Name[1] = 0xAD; | |
790 | pneg_ctxt->Name[2] = 0x25; | |
791 | pneg_ctxt->Name[3] = 0x50; | |
792 | pneg_ctxt->Name[4] = 0x9C; | |
793 | pneg_ctxt->Name[5] = 0xB4; | |
794 | pneg_ctxt->Name[6] = 0x11; | |
795 | pneg_ctxt->Name[7] = 0xE7; | |
796 | pneg_ctxt->Name[8] = 0xB4; | |
797 | pneg_ctxt->Name[9] = 0x23; | |
798 | pneg_ctxt->Name[10] = 0x83; | |
799 | pneg_ctxt->Name[11] = 0xDE; | |
800 | pneg_ctxt->Name[12] = 0x96; | |
801 | pneg_ctxt->Name[13] = 0x8B; | |
802 | pneg_ctxt->Name[14] = 0xCD; | |
803 | pneg_ctxt->Name[15] = 0x7C; | |
804 | } | |
805 | ||
64b39f4a | 806 | static void assemble_neg_contexts(struct ksmbd_conn *conn, |
cb451720 NJ |
807 | struct smb2_negotiate_rsp *rsp, |
808 | void *smb2_buf_len) | |
e2f34481 | 809 | { |
e2f34481 | 810 | char *pneg_ctxt = (char *)rsp + |
cb451720 | 811 | le32_to_cpu(rsp->NegotiateContextOffset); |
e2f34481 NJ |
812 | int neg_ctxt_cnt = 1; |
813 | int ctxt_size; | |
814 | ||
815 | ksmbd_debug(SMB, | |
070fb21e | 816 | "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
e2f34481 | 817 | build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt, |
070fb21e | 818 | conn->preauth_info->Preauth_HashId); |
e2f34481 | 819 | rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt); |
cb451720 | 820 | inc_rfc1001_len(smb2_buf_len, AUTH_GSS_PADDING); |
e2f34481 NJ |
821 | ctxt_size = sizeof(struct smb2_preauth_neg_context); |
822 | /* Round to 8 byte boundary */ | |
823 | pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8); | |
824 | ||
825 | if (conn->cipher_type) { | |
826 | ctxt_size = round_up(ctxt_size, 8); | |
827 | ksmbd_debug(SMB, | |
070fb21e | 828 | "assemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
64b39f4a | 829 | build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt, |
070fb21e | 830 | conn->cipher_type); |
e2f34481 | 831 | rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
af320a73 | 832 | ctxt_size += sizeof(struct smb2_encryption_neg_context) + 2; |
e2f34481 NJ |
833 | /* Round to 8 byte boundary */ |
834 | pneg_ctxt += | |
af320a73 | 835 | round_up(sizeof(struct smb2_encryption_neg_context) + 2, |
e2f34481 NJ |
836 | 8); |
837 | } | |
838 | ||
839 | if (conn->compress_algorithm) { | |
840 | ctxt_size = round_up(ctxt_size, 8); | |
841 | ksmbd_debug(SMB, | |
070fb21e | 842 | "assemble SMB2_COMPRESSION_CAPABILITIES context\n"); |
e2f34481 | 843 | /* Temporarily set to SMB3_COMPRESS_NONE */ |
d6c9ad23 | 844 | build_compression_ctxt((struct smb2_compression_capabilities_context *)pneg_ctxt, |
070fb21e | 845 | conn->compress_algorithm); |
e2f34481 | 846 | rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
d6c9ad23 | 847 | ctxt_size += sizeof(struct smb2_compression_capabilities_context) + 2; |
e2f34481 | 848 | /* Round to 8 byte boundary */ |
d6c9ad23 | 849 | pneg_ctxt += round_up(sizeof(struct smb2_compression_capabilities_context) + 2, |
af320a73 | 850 | 8); |
e2f34481 NJ |
851 | } |
852 | ||
853 | if (conn->posix_ext_supported) { | |
854 | ctxt_size = round_up(ctxt_size, 8); | |
855 | ksmbd_debug(SMB, | |
070fb21e | 856 | "assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
e2f34481 NJ |
857 | build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt); |
858 | rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); | |
859 | ctxt_size += sizeof(struct smb2_posix_neg_context); | |
378087cd NJ |
860 | /* Round to 8 byte boundary */ |
861 | pneg_ctxt += round_up(sizeof(struct smb2_posix_neg_context), 8); | |
862 | } | |
863 | ||
864 | if (conn->signing_negotiated) { | |
865 | ctxt_size = round_up(ctxt_size, 8); | |
866 | ksmbd_debug(SMB, | |
867 | "assemble SMB2_SIGNING_CAPABILITIES context\n"); | |
868 | build_sign_cap_ctxt((struct smb2_signing_capabilities *)pneg_ctxt, | |
869 | conn->signing_algorithm); | |
870 | rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); | |
871 | ctxt_size += sizeof(struct smb2_signing_capabilities) + 2; | |
e2f34481 NJ |
872 | } |
873 | ||
cb451720 | 874 | inc_rfc1001_len(smb2_buf_len, ctxt_size); |
e2f34481 NJ |
875 | } |
876 | ||
64b39f4a | 877 | static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn, |
070fb21e | 878 | struct smb2_preauth_neg_context *pneg_ctxt) |
e2f34481 NJ |
879 | { |
880 | __le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP; | |
881 | ||
070fb21e | 882 | if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) { |
e2f34481 NJ |
883 | conn->preauth_info->Preauth_HashId = |
884 | SMB2_PREAUTH_INTEGRITY_SHA512; | |
885 | err = STATUS_SUCCESS; | |
886 | } | |
887 | ||
888 | return err; | |
889 | } | |
890 | ||
af320a73 NJ |
891 | static void decode_encrypt_ctxt(struct ksmbd_conn *conn, |
892 | struct smb2_encryption_neg_context *pneg_ctxt, | |
893 | int len_of_ctxts) | |
e2f34481 | 894 | { |
e2f34481 | 895 | int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount); |
af320a73 | 896 | int i, cphs_size = cph_cnt * sizeof(__le16); |
e2f34481 NJ |
897 | |
898 | conn->cipher_type = 0; | |
899 | ||
af320a73 NJ |
900 | if (sizeof(struct smb2_encryption_neg_context) + cphs_size > |
901 | len_of_ctxts) { | |
902 | pr_err("Invalid cipher count(%d)\n", cph_cnt); | |
903 | return; | |
904 | } | |
905 | ||
37ba7b00 | 906 | if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION_OFF) |
af320a73 | 907 | return; |
e2f34481 NJ |
908 | |
909 | for (i = 0; i < cph_cnt; i++) { | |
910 | if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM || | |
5a0ca770 NJ |
911 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM || |
912 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM || | |
913 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) { | |
e2f34481 | 914 | ksmbd_debug(SMB, "Cipher ID = 0x%x\n", |
070fb21e | 915 | pneg_ctxt->Ciphers[i]); |
e2f34481 NJ |
916 | conn->cipher_type = pneg_ctxt->Ciphers[i]; |
917 | break; | |
918 | } | |
919 | } | |
e2f34481 NJ |
920 | } |
921 | ||
83912d6d MDSV |
922 | /** |
923 | * smb3_encryption_negotiated() - checks if server and client agreed on enabling encryption | |
924 | * @conn: smb connection | |
925 | * | |
926 | * Return: true if connection should be encrypted, else false | |
927 | */ | |
5bedae90 | 928 | bool smb3_encryption_negotiated(struct ksmbd_conn *conn) |
83912d6d MDSV |
929 | { |
930 | if (!conn->ops->generate_encryptionkey) | |
931 | return false; | |
932 | ||
933 | /* | |
934 | * SMB 3.0 and 3.0.2 dialects use the SMB2_GLOBAL_CAP_ENCRYPTION flag. | |
935 | * SMB 3.1.1 uses the cipher_type field. | |
936 | */ | |
937 | return (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) || | |
938 | conn->cipher_type; | |
939 | } | |
940 | ||
af320a73 | 941 | static void decode_compress_ctxt(struct ksmbd_conn *conn, |
d6c9ad23 | 942 | struct smb2_compression_capabilities_context *pneg_ctxt) |
e2f34481 | 943 | { |
e2f34481 | 944 | conn->compress_algorithm = SMB3_COMPRESS_NONE; |
e2f34481 NJ |
945 | } |
946 | ||
378087cd NJ |
947 | static void decode_sign_cap_ctxt(struct ksmbd_conn *conn, |
948 | struct smb2_signing_capabilities *pneg_ctxt, | |
949 | int len_of_ctxts) | |
950 | { | |
951 | int sign_algo_cnt = le16_to_cpu(pneg_ctxt->SigningAlgorithmCount); | |
952 | int i, sign_alos_size = sign_algo_cnt * sizeof(__le16); | |
953 | ||
954 | conn->signing_negotiated = false; | |
955 | ||
956 | if (sizeof(struct smb2_signing_capabilities) + sign_alos_size > | |
957 | len_of_ctxts) { | |
958 | pr_err("Invalid signing algorithm count(%d)\n", sign_algo_cnt); | |
959 | return; | |
960 | } | |
961 | ||
962 | for (i = 0; i < sign_algo_cnt; i++) { | |
d6c9ad23 RS |
963 | if (pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_HMAC_SHA256_LE || |
964 | pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_AES_CMAC_LE) { | |
378087cd NJ |
965 | ksmbd_debug(SMB, "Signing Algorithm ID = 0x%x\n", |
966 | pneg_ctxt->SigningAlgorithms[i]); | |
967 | conn->signing_negotiated = true; | |
968 | conn->signing_algorithm = | |
969 | pneg_ctxt->SigningAlgorithms[i]; | |
970 | break; | |
971 | } | |
972 | } | |
973 | } | |
974 | ||
e2f34481 | 975 | static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn, |
cb451720 NJ |
976 | struct smb2_negotiate_req *req, |
977 | int len_of_smb) | |
e2f34481 | 978 | { |
e2f34481 | 979 | /* +4 is to account for the RFC1001 len field */ |
cb451720 | 980 | struct smb2_neg_context *pctx = (struct smb2_neg_context *)req; |
af320a73 NJ |
981 | int i = 0, len_of_ctxts; |
982 | int offset = le32_to_cpu(req->NegotiateContextOffset); | |
e2f34481 | 983 | int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount); |
af320a73 NJ |
984 | __le32 status = STATUS_INVALID_PARAMETER; |
985 | ||
986 | ksmbd_debug(SMB, "decoding %d negotiate contexts\n", neg_ctxt_cnt); | |
987 | if (len_of_smb <= offset) { | |
988 | ksmbd_debug(SMB, "Invalid response: negotiate context offset\n"); | |
989 | return status; | |
990 | } | |
991 | ||
992 | len_of_ctxts = len_of_smb - offset; | |
e2f34481 | 993 | |
e2f34481 | 994 | while (i++ < neg_ctxt_cnt) { |
af320a73 NJ |
995 | int clen; |
996 | ||
997 | /* check that offset is not beyond end of SMB */ | |
998 | if (len_of_ctxts == 0) | |
999 | break; | |
1000 | ||
1001 | if (len_of_ctxts < sizeof(struct smb2_neg_context)) | |
1002 | break; | |
1003 | ||
1004 | pctx = (struct smb2_neg_context *)((char *)pctx + offset); | |
1005 | clen = le16_to_cpu(pctx->DataLength); | |
1006 | if (clen + sizeof(struct smb2_neg_context) > len_of_ctxts) | |
1007 | break; | |
1008 | ||
1009 | if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) { | |
e2f34481 | 1010 | ksmbd_debug(SMB, |
070fb21e | 1011 | "deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
e2f34481 NJ |
1012 | if (conn->preauth_info->Preauth_HashId) |
1013 | break; | |
1014 | ||
1015 | status = decode_preauth_ctxt(conn, | |
af320a73 NJ |
1016 | (struct smb2_preauth_neg_context *)pctx); |
1017 | if (status != STATUS_SUCCESS) | |
1018 | break; | |
1019 | } else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) { | |
e2f34481 | 1020 | ksmbd_debug(SMB, |
070fb21e | 1021 | "deassemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
e2f34481 NJ |
1022 | if (conn->cipher_type) |
1023 | break; | |
1024 | ||
af320a73 NJ |
1025 | decode_encrypt_ctxt(conn, |
1026 | (struct smb2_encryption_neg_context *)pctx, | |
1027 | len_of_ctxts); | |
1028 | } else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) { | |
e2f34481 | 1029 | ksmbd_debug(SMB, |
070fb21e | 1030 | "deassemble SMB2_COMPRESSION_CAPABILITIES context\n"); |
e2f34481 NJ |
1031 | if (conn->compress_algorithm) |
1032 | break; | |
1033 | ||
af320a73 | 1034 | decode_compress_ctxt(conn, |
d6c9ad23 | 1035 | (struct smb2_compression_capabilities_context *)pctx); |
af320a73 | 1036 | } else if (pctx->ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) { |
e2f34481 | 1037 | ksmbd_debug(SMB, |
070fb21e | 1038 | "deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n"); |
af320a73 | 1039 | } else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) { |
e2f34481 | 1040 | ksmbd_debug(SMB, |
070fb21e | 1041 | "deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
e2f34481 | 1042 | conn->posix_ext_supported = true; |
378087cd NJ |
1043 | } else if (pctx->ContextType == SMB2_SIGNING_CAPABILITIES) { |
1044 | ksmbd_debug(SMB, | |
1045 | "deassemble SMB2_SIGNING_CAPABILITIES context\n"); | |
1046 | decode_sign_cap_ctxt(conn, | |
1047 | (struct smb2_signing_capabilities *)pctx, | |
1048 | len_of_ctxts); | |
e2f34481 | 1049 | } |
e2f34481 | 1050 | |
af320a73 NJ |
1051 | /* offsets must be 8 byte aligned */ |
1052 | clen = (clen + 7) & ~0x7; | |
1053 | offset = clen + sizeof(struct smb2_neg_context); | |
1054 | len_of_ctxts -= clen + sizeof(struct smb2_neg_context); | |
e2f34481 NJ |
1055 | } |
1056 | return status; | |
1057 | } | |
1058 | ||
1059 | /** | |
1060 | * smb2_handle_negotiate() - handler for smb2 negotiate command | |
1061 | * @work: smb work containing smb request buffer | |
1062 | * | |
1063 | * Return: 0 | |
1064 | */ | |
1065 | int smb2_handle_negotiate(struct ksmbd_work *work) | |
1066 | { | |
1067 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
1068 | struct smb2_negotiate_req *req = smb2_get_msg(work->request_buf); |
1069 | struct smb2_negotiate_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 1070 | int rc = 0; |
442ff9eb | 1071 | unsigned int smb2_buf_len, smb2_neg_size; |
e2f34481 NJ |
1072 | __le32 status; |
1073 | ||
1074 | ksmbd_debug(SMB, "Received negotiate request\n"); | |
1075 | conn->need_neg = false; | |
1076 | if (ksmbd_conn_good(work)) { | |
bde1694a | 1077 | pr_err("conn->tcp_status is already in CifsGood State\n"); |
e2f34481 NJ |
1078 | work->send_no_response = 1; |
1079 | return rc; | |
1080 | } | |
1081 | ||
1082 | if (req->DialectCount == 0) { | |
bde1694a | 1083 | pr_err("malformed packet\n"); |
e2f34481 NJ |
1084 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
1085 | rc = -EINVAL; | |
1086 | goto err_out; | |
1087 | } | |
1088 | ||
442ff9eb | 1089 | smb2_buf_len = get_rfc1002_len(work->request_buf); |
cb451720 | 1090 | smb2_neg_size = offsetof(struct smb2_negotiate_req, Dialects); |
442ff9eb NJ |
1091 | if (smb2_neg_size > smb2_buf_len) { |
1092 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1093 | rc = -EINVAL; | |
1094 | goto err_out; | |
1095 | } | |
1096 | ||
1097 | if (conn->dialect == SMB311_PROT_ID) { | |
1098 | unsigned int nego_ctxt_off = le32_to_cpu(req->NegotiateContextOffset); | |
1099 | ||
1100 | if (smb2_buf_len < nego_ctxt_off) { | |
1101 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1102 | rc = -EINVAL; | |
1103 | goto err_out; | |
1104 | } | |
1105 | ||
1106 | if (smb2_neg_size > nego_ctxt_off) { | |
1107 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1108 | rc = -EINVAL; | |
1109 | goto err_out; | |
1110 | } | |
1111 | ||
1112 | if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) > | |
1113 | nego_ctxt_off) { | |
1114 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1115 | rc = -EINVAL; | |
1116 | goto err_out; | |
1117 | } | |
1118 | } else { | |
1119 | if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) > | |
1120 | smb2_buf_len) { | |
1121 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1122 | rc = -EINVAL; | |
1123 | goto err_out; | |
1124 | } | |
1125 | } | |
1126 | ||
e2f34481 NJ |
1127 | conn->cli_cap = le32_to_cpu(req->Capabilities); |
1128 | switch (conn->dialect) { | |
1129 | case SMB311_PROT_ID: | |
1130 | conn->preauth_info = | |
1131 | kzalloc(sizeof(struct preauth_integrity_info), | |
070fb21e | 1132 | GFP_KERNEL); |
e2f34481 NJ |
1133 | if (!conn->preauth_info) { |
1134 | rc = -ENOMEM; | |
1135 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1136 | goto err_out; | |
1137 | } | |
1138 | ||
cb451720 NJ |
1139 | status = deassemble_neg_contexts(conn, req, |
1140 | get_rfc1002_len(work->request_buf)); | |
e2f34481 | 1141 | if (status != STATUS_SUCCESS) { |
bde1694a NJ |
1142 | pr_err("deassemble_neg_contexts error(0x%x)\n", |
1143 | status); | |
e2f34481 NJ |
1144 | rsp->hdr.Status = status; |
1145 | rc = -EINVAL; | |
aa7253c2 NJ |
1146 | kfree(conn->preauth_info); |
1147 | conn->preauth_info = NULL; | |
e2f34481 NJ |
1148 | goto err_out; |
1149 | } | |
1150 | ||
1151 | rc = init_smb3_11_server(conn); | |
1152 | if (rc < 0) { | |
1153 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
aa7253c2 NJ |
1154 | kfree(conn->preauth_info); |
1155 | conn->preauth_info = NULL; | |
e2f34481 NJ |
1156 | goto err_out; |
1157 | } | |
1158 | ||
1159 | ksmbd_gen_preauth_integrity_hash(conn, | |
070fb21e NJ |
1160 | work->request_buf, |
1161 | conn->preauth_info->Preauth_HashValue); | |
e2f34481 NJ |
1162 | rsp->NegotiateContextOffset = |
1163 | cpu_to_le32(OFFSET_OF_NEG_CONTEXT); | |
cb451720 | 1164 | assemble_neg_contexts(conn, rsp, work->response_buf); |
e2f34481 NJ |
1165 | break; |
1166 | case SMB302_PROT_ID: | |
1167 | init_smb3_02_server(conn); | |
1168 | break; | |
1169 | case SMB30_PROT_ID: | |
1170 | init_smb3_0_server(conn); | |
1171 | break; | |
1172 | case SMB21_PROT_ID: | |
1173 | init_smb2_1_server(conn); | |
1174 | break; | |
e2f34481 NJ |
1175 | case SMB2X_PROT_ID: |
1176 | case BAD_PROT_ID: | |
1177 | default: | |
1178 | ksmbd_debug(SMB, "Server dialect :0x%x not supported\n", | |
070fb21e | 1179 | conn->dialect); |
e2f34481 NJ |
1180 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
1181 | rc = -EINVAL; | |
1182 | goto err_out; | |
1183 | } | |
1184 | rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
1185 | ||
1186 | /* For stats */ | |
1187 | conn->connection_type = conn->dialect; | |
1188 | ||
1189 | rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); | |
1190 | rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); | |
1191 | rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); | |
1192 | ||
51a13873 NJ |
1193 | memcpy(conn->ClientGUID, req->ClientGUID, |
1194 | SMB2_CLIENT_GUID_SIZE); | |
1195 | conn->cli_sec_mode = le16_to_cpu(req->SecurityMode); | |
e2f34481 NJ |
1196 | |
1197 | rsp->StructureSize = cpu_to_le16(65); | |
1198 | rsp->DialectRevision = cpu_to_le16(conn->dialect); | |
1199 | /* Not setting conn guid rsp->ServerGUID, as it | |
1200 | * not used by client for identifying server | |
1201 | */ | |
1202 | memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE); | |
1203 | ||
1204 | rsp->SystemTime = cpu_to_le64(ksmbd_systime()); | |
1205 | rsp->ServerStartTime = 0; | |
1206 | ksmbd_debug(SMB, "negotiate context offset %d, count %d\n", | |
070fb21e NJ |
1207 | le32_to_cpu(rsp->NegotiateContextOffset), |
1208 | le16_to_cpu(rsp->NegotiateContextCount)); | |
e2f34481 NJ |
1209 | |
1210 | rsp->SecurityBufferOffset = cpu_to_le16(128); | |
1211 | rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); | |
cb451720 NJ |
1212 | ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) + |
1213 | le16_to_cpu(rsp->SecurityBufferOffset)); | |
1214 | inc_rfc1001_len(work->response_buf, sizeof(struct smb2_negotiate_rsp) - | |
070fb21e NJ |
1215 | sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) + |
1216 | AUTH_GSS_LENGTH); | |
e2f34481 NJ |
1217 | rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; |
1218 | conn->use_spnego = true; | |
1219 | ||
1220 | if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO || | |
64b39f4a NJ |
1221 | server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) && |
1222 | req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE) | |
e2f34481 NJ |
1223 | conn->sign = true; |
1224 | else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) { | |
1225 | server_conf.enforced_signing = true; | |
1226 | rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; | |
1227 | conn->sign = true; | |
1228 | } | |
1229 | ||
1230 | conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode); | |
1231 | ksmbd_conn_set_need_negotiate(work); | |
1232 | ||
1233 | err_out: | |
1234 | if (rc < 0) | |
1235 | smb2_set_err_rsp(work); | |
1236 | ||
1237 | return rc; | |
1238 | } | |
1239 | ||
1240 | static int alloc_preauth_hash(struct ksmbd_session *sess, | |
070fb21e | 1241 | struct ksmbd_conn *conn) |
e2f34481 NJ |
1242 | { |
1243 | if (sess->Preauth_HashValue) | |
1244 | return 0; | |
1245 | ||
86f52978 | 1246 | sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue, |
070fb21e | 1247 | PREAUTH_HASHVALUE_SIZE, GFP_KERNEL); |
e2f34481 NJ |
1248 | if (!sess->Preauth_HashValue) |
1249 | return -ENOMEM; | |
1250 | ||
e2f34481 NJ |
1251 | return 0; |
1252 | } | |
1253 | ||
1254 | static int generate_preauth_hash(struct ksmbd_work *work) | |
1255 | { | |
1256 | struct ksmbd_conn *conn = work->conn; | |
1257 | struct ksmbd_session *sess = work->sess; | |
f5a544e3 | 1258 | u8 *preauth_hash; |
e2f34481 NJ |
1259 | |
1260 | if (conn->dialect != SMB311_PROT_ID) | |
1261 | return 0; | |
1262 | ||
f5a544e3 NJ |
1263 | if (conn->binding) { |
1264 | struct preauth_session *preauth_sess; | |
1265 | ||
1266 | preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); | |
1267 | if (!preauth_sess) { | |
1268 | preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id); | |
1269 | if (!preauth_sess) | |
1270 | return -ENOMEM; | |
1271 | } | |
1272 | ||
1273 | preauth_hash = preauth_sess->Preauth_HashValue; | |
1274 | } else { | |
1275 | if (!sess->Preauth_HashValue) | |
1276 | if (alloc_preauth_hash(sess, conn)) | |
1277 | return -ENOMEM; | |
1278 | preauth_hash = sess->Preauth_HashValue; | |
e2f34481 NJ |
1279 | } |
1280 | ||
f5a544e3 | 1281 | ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash); |
e2f34481 NJ |
1282 | return 0; |
1283 | } | |
1284 | ||
0d994cd4 MM |
1285 | static int decode_negotiation_token(struct ksmbd_conn *conn, |
1286 | struct negotiate_message *negblob, | |
1287 | size_t sz) | |
e2f34481 | 1288 | { |
e2f34481 NJ |
1289 | if (!conn->use_spnego) |
1290 | return -EINVAL; | |
1291 | ||
fad4161b HL |
1292 | if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) { |
1293 | if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) { | |
e2f34481 NJ |
1294 | conn->auth_mechs |= KSMBD_AUTH_NTLMSSP; |
1295 | conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP; | |
1296 | conn->use_spnego = false; | |
1297 | } | |
1298 | } | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | static int ntlm_negotiate(struct ksmbd_work *work, | |
0d994cd4 MM |
1303 | struct negotiate_message *negblob, |
1304 | size_t negblob_len) | |
e2f34481 | 1305 | { |
cb451720 | 1306 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
1307 | struct challenge_message *chgblob; |
1308 | unsigned char *spnego_blob = NULL; | |
1309 | u16 spnego_blob_len; | |
1310 | char *neg_blob; | |
1311 | int sz, rc; | |
1312 | ||
1313 | ksmbd_debug(SMB, "negotiate phase\n"); | |
ce53d365 | 1314 | rc = ksmbd_decode_ntlmssp_neg_blob(negblob, negblob_len, work->conn); |
e2f34481 NJ |
1315 | if (rc) |
1316 | return rc; | |
1317 | ||
1318 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
1319 | chgblob = | |
1320 | (struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz); | |
1321 | memset(chgblob, 0, sizeof(struct challenge_message)); | |
1322 | ||
1323 | if (!work->conn->use_spnego) { | |
ce53d365 | 1324 | sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn); |
e2f34481 NJ |
1325 | if (sz < 0) |
1326 | return -ENOMEM; | |
1327 | ||
1328 | rsp->SecurityBufferLength = cpu_to_le16(sz); | |
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | sz = sizeof(struct challenge_message); | |
1333 | sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6; | |
1334 | ||
1335 | neg_blob = kzalloc(sz, GFP_KERNEL); | |
1336 | if (!neg_blob) | |
1337 | return -ENOMEM; | |
1338 | ||
1339 | chgblob = (struct challenge_message *)neg_blob; | |
ce53d365 | 1340 | sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn); |
e2f34481 NJ |
1341 | if (sz < 0) { |
1342 | rc = -ENOMEM; | |
1343 | goto out; | |
1344 | } | |
1345 | ||
070fb21e NJ |
1346 | rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len, |
1347 | neg_blob, sz); | |
e2f34481 NJ |
1348 | if (rc) { |
1349 | rc = -ENOMEM; | |
1350 | goto out; | |
1351 | } | |
1352 | ||
1353 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
1354 | memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); | |
1355 | rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); | |
1356 | ||
1357 | out: | |
1358 | kfree(spnego_blob); | |
1359 | kfree(neg_blob); | |
1360 | return rc; | |
1361 | } | |
1362 | ||
1363 | static struct authenticate_message *user_authblob(struct ksmbd_conn *conn, | |
070fb21e | 1364 | struct smb2_sess_setup_req *req) |
e2f34481 NJ |
1365 | { |
1366 | int sz; | |
1367 | ||
1368 | if (conn->use_spnego && conn->mechToken) | |
1369 | return (struct authenticate_message *)conn->mechToken; | |
1370 | ||
1371 | sz = le16_to_cpu(req->SecurityBufferOffset); | |
1372 | return (struct authenticate_message *)((char *)&req->hdr.ProtocolId | |
1373 | + sz); | |
1374 | } | |
1375 | ||
1376 | static struct ksmbd_user *session_user(struct ksmbd_conn *conn, | |
070fb21e | 1377 | struct smb2_sess_setup_req *req) |
e2f34481 NJ |
1378 | { |
1379 | struct authenticate_message *authblob; | |
1380 | struct ksmbd_user *user; | |
1381 | char *name; | |
0d994cd4 | 1382 | unsigned int auth_msg_len, name_off, name_len, secbuf_len; |
e2f34481 | 1383 | |
0d994cd4 MM |
1384 | secbuf_len = le16_to_cpu(req->SecurityBufferLength); |
1385 | if (secbuf_len < sizeof(struct authenticate_message)) { | |
1386 | ksmbd_debug(SMB, "blob len %d too small\n", secbuf_len); | |
1387 | return NULL; | |
1388 | } | |
e2f34481 | 1389 | authblob = user_authblob(conn, req); |
0d994cd4 MM |
1390 | name_off = le32_to_cpu(authblob->UserName.BufferOffset); |
1391 | name_len = le16_to_cpu(authblob->UserName.Length); | |
1392 | auth_msg_len = le16_to_cpu(req->SecurityBufferOffset) + secbuf_len; | |
1393 | ||
1394 | if (auth_msg_len < (u64)name_off + name_len) | |
1395 | return NULL; | |
1396 | ||
1397 | name = smb_strndup_from_utf16((const char *)authblob + name_off, | |
1398 | name_len, | |
e2f34481 NJ |
1399 | true, |
1400 | conn->local_nls); | |
1401 | if (IS_ERR(name)) { | |
bde1694a | 1402 | pr_err("cannot allocate memory\n"); |
e2f34481 NJ |
1403 | return NULL; |
1404 | } | |
1405 | ||
1406 | ksmbd_debug(SMB, "session setup request for user %s\n", name); | |
1407 | user = ksmbd_login_user(name); | |
1408 | kfree(name); | |
1409 | return user; | |
1410 | } | |
1411 | ||
1412 | static int ntlm_authenticate(struct ksmbd_work *work) | |
1413 | { | |
cb451720 NJ |
1414 | struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf); |
1415 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1416 | struct ksmbd_conn *conn = work->conn; |
1417 | struct ksmbd_session *sess = work->sess; | |
1418 | struct channel *chann = NULL; | |
1419 | struct ksmbd_user *user; | |
64b39f4a | 1420 | u64 prev_id; |
e2f34481 NJ |
1421 | int sz, rc; |
1422 | ||
1423 | ksmbd_debug(SMB, "authenticate phase\n"); | |
1424 | if (conn->use_spnego) { | |
1425 | unsigned char *spnego_blob; | |
1426 | u16 spnego_blob_len; | |
1427 | ||
1428 | rc = build_spnego_ntlmssp_auth_blob(&spnego_blob, | |
1429 | &spnego_blob_len, | |
1430 | 0); | |
1431 | if (rc) | |
1432 | return -ENOMEM; | |
1433 | ||
1434 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
64b39f4a | 1435 | memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); |
e2f34481 NJ |
1436 | rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); |
1437 | kfree(spnego_blob); | |
cb451720 | 1438 | inc_rfc1001_len(work->response_buf, spnego_blob_len - 1); |
e2f34481 NJ |
1439 | } |
1440 | ||
1441 | user = session_user(conn, req); | |
1442 | if (!user) { | |
1443 | ksmbd_debug(SMB, "Unknown user name or an error\n"); | |
58090b17 | 1444 | return -EPERM; |
e2f34481 NJ |
1445 | } |
1446 | ||
1447 | /* Check for previous session */ | |
1448 | prev_id = le64_to_cpu(req->PreviousSessionId); | |
1449 | if (prev_id && prev_id != sess->id) | |
e4d3e6b5 | 1450 | destroy_previous_session(conn, user, prev_id); |
e2f34481 NJ |
1451 | |
1452 | if (sess->state == SMB2_SESSION_VALID) { | |
1453 | /* | |
1454 | * Reuse session if anonymous try to connect | |
1455 | * on reauthetication. | |
1456 | */ | |
1457 | if (ksmbd_anonymous_user(user)) { | |
1458 | ksmbd_free_user(user); | |
1459 | return 0; | |
1460 | } | |
a58b45a4 NJ |
1461 | |
1462 | if (!ksmbd_compare_user(sess->user, user)) { | |
1463 | ksmbd_free_user(user); | |
1464 | return -EPERM; | |
1465 | } | |
1466 | ksmbd_free_user(user); | |
1467 | } else { | |
1468 | sess->user = user; | |
e2f34481 NJ |
1469 | } |
1470 | ||
e2f34481 | 1471 | if (user_guest(sess->user)) { |
e2f34481 NJ |
1472 | rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE; |
1473 | } else { | |
1474 | struct authenticate_message *authblob; | |
1475 | ||
1476 | authblob = user_authblob(conn, req); | |
1477 | sz = le16_to_cpu(req->SecurityBufferLength); | |
ce53d365 | 1478 | rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, conn, sess); |
e2f34481 NJ |
1479 | if (rc) { |
1480 | set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD); | |
1481 | ksmbd_debug(SMB, "authentication failed\n"); | |
58090b17 | 1482 | return -EPERM; |
e2f34481 | 1483 | } |
ac090d9c | 1484 | } |
e2f34481 | 1485 | |
ac090d9c NJ |
1486 | /* |
1487 | * If session state is SMB2_SESSION_VALID, We can assume | |
1488 | * that it is reauthentication. And the user/password | |
1489 | * has been verified, so return it here. | |
1490 | */ | |
1491 | if (sess->state == SMB2_SESSION_VALID) { | |
1492 | if (conn->binding) | |
1493 | goto binding_session; | |
1494 | return 0; | |
1495 | } | |
e2f34481 | 1496 | |
ac090d9c NJ |
1497 | if ((rsp->SessionFlags != SMB2_SESSION_FLAG_IS_GUEST_LE && |
1498 | (conn->sign || server_conf.enforced_signing)) || | |
1499 | (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) | |
1500 | sess->sign = true; | |
1501 | ||
1502 | if (smb3_encryption_negotiated(conn) && | |
1503 | !(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { | |
af7c39d9 | 1504 | rc = conn->ops->generate_encryptionkey(conn, sess); |
ac090d9c NJ |
1505 | if (rc) { |
1506 | ksmbd_debug(SMB, | |
1507 | "SMB3 encryption key generation failed\n"); | |
1508 | return -EINVAL; | |
e2f34481 | 1509 | } |
ac090d9c | 1510 | sess->enc = true; |
37ba7b00 NJ |
1511 | if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION) |
1512 | rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; | |
ac090d9c NJ |
1513 | /* |
1514 | * signing is disable if encryption is enable | |
1515 | * on this session | |
1516 | */ | |
1517 | sess->sign = false; | |
e2f34481 NJ |
1518 | } |
1519 | ||
f5a544e3 | 1520 | binding_session: |
e2f34481 | 1521 | if (conn->dialect >= SMB30_PROT_ID) { |
8e06b31e | 1522 | read_lock(&sess->chann_lock); |
f5a544e3 | 1523 | chann = lookup_chann_list(sess, conn); |
8e06b31e | 1524 | read_unlock(&sess->chann_lock); |
e2f34481 NJ |
1525 | if (!chann) { |
1526 | chann = kmalloc(sizeof(struct channel), GFP_KERNEL); | |
1527 | if (!chann) | |
1528 | return -ENOMEM; | |
1529 | ||
1530 | chann->conn = conn; | |
1531 | INIT_LIST_HEAD(&chann->chann_list); | |
8e06b31e | 1532 | write_lock(&sess->chann_lock); |
e2f34481 | 1533 | list_add(&chann->chann_list, &sess->ksmbd_chann_list); |
8e06b31e | 1534 | write_unlock(&sess->chann_lock); |
e2f34481 NJ |
1535 | } |
1536 | } | |
1537 | ||
1538 | if (conn->ops->generate_signingkey) { | |
f5a544e3 | 1539 | rc = conn->ops->generate_signingkey(sess, conn); |
e2f34481 | 1540 | if (rc) { |
64b39f4a | 1541 | ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
58090b17 | 1542 | return -EINVAL; |
e2f34481 NJ |
1543 | } |
1544 | } | |
1545 | ||
51a13873 NJ |
1546 | if (!ksmbd_conn_lookup_dialect(conn)) { |
1547 | pr_err("fail to verify the dialect\n"); | |
1548 | return -ENOENT; | |
e2f34481 NJ |
1549 | } |
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | #ifdef CONFIG_SMB_SERVER_KERBEROS5 | |
1554 | static int krb5_authenticate(struct ksmbd_work *work) | |
1555 | { | |
cb451720 NJ |
1556 | struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf); |
1557 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1558 | struct ksmbd_conn *conn = work->conn; |
1559 | struct ksmbd_session *sess = work->sess; | |
1560 | char *in_blob, *out_blob; | |
1561 | struct channel *chann = NULL; | |
64b39f4a | 1562 | u64 prev_sess_id; |
e2f34481 NJ |
1563 | int in_len, out_len; |
1564 | int retval; | |
1565 | ||
1566 | in_blob = (char *)&req->hdr.ProtocolId + | |
1567 | le16_to_cpu(req->SecurityBufferOffset); | |
1568 | in_len = le16_to_cpu(req->SecurityBufferLength); | |
1569 | out_blob = (char *)&rsp->hdr.ProtocolId + | |
1570 | le16_to_cpu(rsp->SecurityBufferOffset); | |
1571 | out_len = work->response_sz - | |
cb451720 | 1572 | (le16_to_cpu(rsp->SecurityBufferOffset) + 4); |
e2f34481 NJ |
1573 | |
1574 | /* Check previous session */ | |
1575 | prev_sess_id = le64_to_cpu(req->PreviousSessionId); | |
1576 | if (prev_sess_id && prev_sess_id != sess->id) | |
e4d3e6b5 | 1577 | destroy_previous_session(conn, sess->user, prev_sess_id); |
e2f34481 NJ |
1578 | |
1579 | if (sess->state == SMB2_SESSION_VALID) | |
1580 | ksmbd_free_user(sess->user); | |
1581 | ||
1582 | retval = ksmbd_krb5_authenticate(sess, in_blob, in_len, | |
070fb21e | 1583 | out_blob, &out_len); |
e2f34481 NJ |
1584 | if (retval) { |
1585 | ksmbd_debug(SMB, "krb5 authentication failed\n"); | |
58090b17 | 1586 | return -EINVAL; |
e2f34481 NJ |
1587 | } |
1588 | rsp->SecurityBufferLength = cpu_to_le16(out_len); | |
cb451720 | 1589 | inc_rfc1001_len(work->response_buf, out_len - 1); |
e2f34481 NJ |
1590 | |
1591 | if ((conn->sign || server_conf.enforced_signing) || | |
64b39f4a | 1592 | (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) |
e2f34481 NJ |
1593 | sess->sign = true; |
1594 | ||
83912d6d | 1595 | if (smb3_encryption_negotiated(conn)) { |
af7c39d9 | 1596 | retval = conn->ops->generate_encryptionkey(conn, sess); |
e2f34481 NJ |
1597 | if (retval) { |
1598 | ksmbd_debug(SMB, | |
070fb21e | 1599 | "SMB3 encryption key generation failed\n"); |
58090b17 | 1600 | return -EINVAL; |
e2f34481 NJ |
1601 | } |
1602 | sess->enc = true; | |
37ba7b00 NJ |
1603 | if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION) |
1604 | rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; | |
e2f34481 NJ |
1605 | sess->sign = false; |
1606 | } | |
1607 | ||
1608 | if (conn->dialect >= SMB30_PROT_ID) { | |
8e06b31e | 1609 | read_lock(&sess->chann_lock); |
f5a544e3 | 1610 | chann = lookup_chann_list(sess, conn); |
8e06b31e | 1611 | read_unlock(&sess->chann_lock); |
e2f34481 NJ |
1612 | if (!chann) { |
1613 | chann = kmalloc(sizeof(struct channel), GFP_KERNEL); | |
1614 | if (!chann) | |
1615 | return -ENOMEM; | |
1616 | ||
1617 | chann->conn = conn; | |
1618 | INIT_LIST_HEAD(&chann->chann_list); | |
8e06b31e | 1619 | write_lock(&sess->chann_lock); |
e2f34481 | 1620 | list_add(&chann->chann_list, &sess->ksmbd_chann_list); |
8e06b31e | 1621 | write_unlock(&sess->chann_lock); |
e2f34481 NJ |
1622 | } |
1623 | } | |
1624 | ||
1625 | if (conn->ops->generate_signingkey) { | |
f5a544e3 | 1626 | retval = conn->ops->generate_signingkey(sess, conn); |
e2f34481 | 1627 | if (retval) { |
64b39f4a | 1628 | ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
58090b17 | 1629 | return -EINVAL; |
e2f34481 NJ |
1630 | } |
1631 | } | |
1632 | ||
51a13873 NJ |
1633 | if (!ksmbd_conn_lookup_dialect(conn)) { |
1634 | pr_err("fail to verify the dialect\n"); | |
1635 | return -ENOENT; | |
e2f34481 NJ |
1636 | } |
1637 | return 0; | |
1638 | } | |
1639 | #else | |
1640 | static int krb5_authenticate(struct ksmbd_work *work) | |
1641 | { | |
1642 | return -EOPNOTSUPP; | |
1643 | } | |
1644 | #endif | |
1645 | ||
1646 | int smb2_sess_setup(struct ksmbd_work *work) | |
1647 | { | |
1648 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
1649 | struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf); |
1650 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1651 | struct ksmbd_session *sess; |
1652 | struct negotiate_message *negblob; | |
0d994cd4 | 1653 | unsigned int negblob_len, negblob_off; |
e2f34481 NJ |
1654 | int rc = 0; |
1655 | ||
1656 | ksmbd_debug(SMB, "Received request for session setup\n"); | |
1657 | ||
1658 | rsp->StructureSize = cpu_to_le16(9); | |
1659 | rsp->SessionFlags = 0; | |
1660 | rsp->SecurityBufferOffset = cpu_to_le16(72); | |
1661 | rsp->SecurityBufferLength = 0; | |
cb451720 | 1662 | inc_rfc1001_len(work->response_buf, 9); |
e2f34481 NJ |
1663 | |
1664 | if (!req->hdr.SessionId) { | |
1665 | sess = ksmbd_smb2_session_create(); | |
1666 | if (!sess) { | |
1667 | rc = -ENOMEM; | |
1668 | goto out_err; | |
1669 | } | |
1670 | rsp->hdr.SessionId = cpu_to_le64(sess->id); | |
e4d3e6b5 NJ |
1671 | rc = ksmbd_session_register(conn, sess); |
1672 | if (rc) | |
1673 | goto out_err; | |
f5a544e3 NJ |
1674 | } else if (conn->dialect >= SMB30_PROT_ID && |
1675 | (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && | |
1676 | req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) { | |
1677 | u64 sess_id = le64_to_cpu(req->hdr.SessionId); | |
1678 | ||
1679 | sess = ksmbd_session_lookup_slowpath(sess_id); | |
1680 | if (!sess) { | |
1681 | rc = -ENOENT; | |
1682 | goto out_err; | |
1683 | } | |
1684 | ||
af7c39d9 | 1685 | if (conn->dialect != sess->dialect) { |
f5a544e3 NJ |
1686 | rc = -EINVAL; |
1687 | goto out_err; | |
1688 | } | |
1689 | ||
1690 | if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) { | |
1691 | rc = -EINVAL; | |
1692 | goto out_err; | |
1693 | } | |
1694 | ||
af7c39d9 | 1695 | if (strncmp(conn->ClientGUID, sess->ClientGUID, |
f5a544e3 NJ |
1696 | SMB2_CLIENT_GUID_SIZE)) { |
1697 | rc = -ENOENT; | |
1698 | goto out_err; | |
1699 | } | |
1700 | ||
1701 | if (sess->state == SMB2_SESSION_IN_PROGRESS) { | |
1702 | rc = -EACCES; | |
1703 | goto out_err; | |
1704 | } | |
1705 | ||
1706 | if (sess->state == SMB2_SESSION_EXPIRED) { | |
1707 | rc = -EFAULT; | |
1708 | goto out_err; | |
1709 | } | |
1710 | ||
1711 | if (ksmbd_session_lookup(conn, sess_id)) { | |
1712 | rc = -EACCES; | |
1713 | goto out_err; | |
1714 | } | |
1715 | ||
1716 | conn->binding = true; | |
1717 | } else if ((conn->dialect < SMB30_PROT_ID || | |
1718 | server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && | |
1719 | (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { | |
4951a84f | 1720 | sess = NULL; |
f5a544e3 NJ |
1721 | rc = -EACCES; |
1722 | goto out_err; | |
e2f34481 NJ |
1723 | } else { |
1724 | sess = ksmbd_session_lookup(conn, | |
070fb21e | 1725 | le64_to_cpu(req->hdr.SessionId)); |
e2f34481 NJ |
1726 | if (!sess) { |
1727 | rc = -ENOENT; | |
e2f34481 NJ |
1728 | goto out_err; |
1729 | } | |
1730 | } | |
1731 | work->sess = sess; | |
1732 | ||
1733 | if (sess->state == SMB2_SESSION_EXPIRED) | |
1734 | sess->state = SMB2_SESSION_IN_PROGRESS; | |
1735 | ||
0d994cd4 MM |
1736 | negblob_off = le16_to_cpu(req->SecurityBufferOffset); |
1737 | negblob_len = le16_to_cpu(req->SecurityBufferLength); | |
cb451720 | 1738 | if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) || |
f8fbfd85 CJ |
1739 | negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) { |
1740 | rc = -EINVAL; | |
1741 | goto out_err; | |
1742 | } | |
0d994cd4 | 1743 | |
e2f34481 | 1744 | negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId + |
0d994cd4 | 1745 | negblob_off); |
e2f34481 | 1746 | |
0d994cd4 | 1747 | if (decode_negotiation_token(conn, negblob, negblob_len) == 0) { |
e2f34481 NJ |
1748 | if (conn->mechToken) |
1749 | negblob = (struct negotiate_message *)conn->mechToken; | |
1750 | } | |
1751 | ||
1752 | if (server_conf.auth_mechs & conn->auth_mechs) { | |
f5a544e3 NJ |
1753 | rc = generate_preauth_hash(work); |
1754 | if (rc) | |
1755 | goto out_err; | |
1756 | ||
e2f34481 NJ |
1757 | if (conn->preferred_auth_mech & |
1758 | (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) { | |
e2f34481 NJ |
1759 | rc = krb5_authenticate(work); |
1760 | if (rc) { | |
f5a544e3 | 1761 | rc = -EINVAL; |
e2f34481 NJ |
1762 | goto out_err; |
1763 | } | |
1764 | ||
1765 | ksmbd_conn_set_good(work); | |
1766 | sess->state = SMB2_SESSION_VALID; | |
822bc8ea | 1767 | kfree(sess->Preauth_HashValue); |
e2f34481 NJ |
1768 | sess->Preauth_HashValue = NULL; |
1769 | } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) { | |
e2f34481 | 1770 | if (negblob->MessageType == NtLmNegotiate) { |
0d994cd4 | 1771 | rc = ntlm_negotiate(work, negblob, negblob_len); |
e2f34481 NJ |
1772 | if (rc) |
1773 | goto out_err; | |
1774 | rsp->hdr.Status = | |
1775 | STATUS_MORE_PROCESSING_REQUIRED; | |
1776 | /* | |
1777 | * Note: here total size -1 is done as an | |
1778 | * adjustment for 0 size blob | |
1779 | */ | |
cb451720 NJ |
1780 | inc_rfc1001_len(work->response_buf, |
1781 | le16_to_cpu(rsp->SecurityBufferLength) - 1); | |
e2f34481 NJ |
1782 | |
1783 | } else if (negblob->MessageType == NtLmAuthenticate) { | |
1784 | rc = ntlm_authenticate(work); | |
1785 | if (rc) | |
1786 | goto out_err; | |
1787 | ||
1788 | ksmbd_conn_set_good(work); | |
1789 | sess->state = SMB2_SESSION_VALID; | |
f5a544e3 NJ |
1790 | if (conn->binding) { |
1791 | struct preauth_session *preauth_sess; | |
1792 | ||
1793 | preauth_sess = | |
1794 | ksmbd_preauth_session_lookup(conn, sess->id); | |
1795 | if (preauth_sess) { | |
1796 | list_del(&preauth_sess->preauth_entry); | |
1797 | kfree(preauth_sess); | |
1798 | } | |
1799 | } | |
822bc8ea | 1800 | kfree(sess->Preauth_HashValue); |
e2f34481 NJ |
1801 | sess->Preauth_HashValue = NULL; |
1802 | } | |
1803 | } else { | |
1804 | /* TODO: need one more negotiation */ | |
bde1694a | 1805 | pr_err("Not support the preferred authentication\n"); |
e2f34481 | 1806 | rc = -EINVAL; |
e2f34481 NJ |
1807 | } |
1808 | } else { | |
bde1694a | 1809 | pr_err("Not support authentication\n"); |
e2f34481 | 1810 | rc = -EINVAL; |
e2f34481 NJ |
1811 | } |
1812 | ||
1813 | out_err: | |
f5a544e3 NJ |
1814 | if (rc == -EINVAL) |
1815 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1816 | else if (rc == -ENOENT) | |
1817 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; | |
1818 | else if (rc == -EACCES) | |
1819 | rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; | |
1820 | else if (rc == -EFAULT) | |
1821 | rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED; | |
58090b17 NJ |
1822 | else if (rc == -ENOMEM) |
1823 | rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; | |
f5a544e3 NJ |
1824 | else if (rc) |
1825 | rsp->hdr.Status = STATUS_LOGON_FAILURE; | |
1826 | ||
e2f34481 NJ |
1827 | if (conn->use_spnego && conn->mechToken) { |
1828 | kfree(conn->mechToken); | |
1829 | conn->mechToken = NULL; | |
1830 | } | |
1831 | ||
621be84a NJ |
1832 | if (rc < 0) { |
1833 | /* | |
1834 | * SecurityBufferOffset should be set to zero | |
1835 | * in session setup error response. | |
1836 | */ | |
1837 | rsp->SecurityBufferOffset = 0; | |
1838 | ||
1839 | if (sess) { | |
1840 | bool try_delay = false; | |
1841 | ||
1842 | /* | |
1843 | * To avoid dictionary attacks (repeated session setups rapidly sent) to | |
1844 | * connect to server, ksmbd make a delay of a 5 seconds on session setup | |
1845 | * failure to make it harder to send enough random connection requests | |
1846 | * to break into a server. | |
1847 | */ | |
1848 | if (sess->user && sess->user->flags & KSMBD_USER_FLAG_DELAY_SESSION) | |
1849 | try_delay = true; | |
1850 | ||
e4d3e6b5 | 1851 | xa_erase(&conn->sessions, sess->id); |
621be84a NJ |
1852 | ksmbd_session_destroy(sess); |
1853 | work->sess = NULL; | |
1854 | if (try_delay) | |
1855 | ssleep(5); | |
1856 | } | |
e2f34481 NJ |
1857 | } |
1858 | ||
1859 | return rc; | |
1860 | } | |
1861 | ||
1862 | /** | |
1863 | * smb2_tree_connect() - handler for smb2 tree connect command | |
1864 | * @work: smb work containing smb request buffer | |
1865 | * | |
1866 | * Return: 0 on success, otherwise error | |
1867 | */ | |
1868 | int smb2_tree_connect(struct ksmbd_work *work) | |
1869 | { | |
1870 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
1871 | struct smb2_tree_connect_req *req = smb2_get_msg(work->request_buf); |
1872 | struct smb2_tree_connect_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1873 | struct ksmbd_session *sess = work->sess; |
1874 | char *treename = NULL, *name = NULL; | |
1875 | struct ksmbd_tree_conn_status status; | |
1876 | struct ksmbd_share_config *share; | |
1877 | int rc = -EINVAL; | |
1878 | ||
1879 | treename = smb_strndup_from_utf16(req->Buffer, | |
070fb21e NJ |
1880 | le16_to_cpu(req->PathLength), true, |
1881 | conn->local_nls); | |
e2f34481 | 1882 | if (IS_ERR(treename)) { |
bde1694a | 1883 | pr_err("treename is NULL\n"); |
e2f34481 NJ |
1884 | status.ret = KSMBD_TREE_CONN_STATUS_ERROR; |
1885 | goto out_err1; | |
1886 | } | |
1887 | ||
16b5f54e | 1888 | name = ksmbd_extract_sharename(conn->um, treename); |
e2f34481 NJ |
1889 | if (IS_ERR(name)) { |
1890 | status.ret = KSMBD_TREE_CONN_STATUS_ERROR; | |
1891 | goto out_err1; | |
1892 | } | |
1893 | ||
1894 | ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n", | |
070fb21e | 1895 | name, treename); |
e2f34481 | 1896 | |
af7c39d9 | 1897 | status = ksmbd_tree_conn_connect(conn, sess, name); |
e2f34481 NJ |
1898 | if (status.ret == KSMBD_TREE_CONN_STATUS_OK) |
1899 | rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id); | |
1900 | else | |
1901 | goto out_err1; | |
1902 | ||
1903 | share = status.tree_conn->share_conf; | |
1904 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { | |
1905 | ksmbd_debug(SMB, "IPC share path request\n"); | |
1906 | rsp->ShareType = SMB2_SHARE_TYPE_PIPE; | |
1907 | rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | | |
1908 | FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE | | |
1909 | FILE_DELETE_LE | FILE_READ_CONTROL_LE | | |
1910 | FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | | |
1911 | FILE_SYNCHRONIZE_LE; | |
1912 | } else { | |
1913 | rsp->ShareType = SMB2_SHARE_TYPE_DISK; | |
1914 | rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | | |
1915 | FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE; | |
1916 | if (test_tree_conn_flag(status.tree_conn, | |
1917 | KSMBD_TREE_CONN_FLAG_WRITABLE)) { | |
1918 | rsp->MaximalAccess |= FILE_WRITE_DATA_LE | | |
1919 | FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE | | |
3aefd54d WJ |
1920 | FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE | |
1921 | FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE | | |
1922 | FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | | |
1923 | FILE_SYNCHRONIZE_LE; | |
e2f34481 NJ |
1924 | } |
1925 | } | |
1926 | ||
1927 | status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess); | |
1928 | if (conn->posix_ext_supported) | |
1929 | status.tree_conn->posix_extensions = true; | |
1930 | ||
1931 | out_err1: | |
1932 | rsp->StructureSize = cpu_to_le16(16); | |
1933 | rsp->Capabilities = 0; | |
1934 | rsp->Reserved = 0; | |
1935 | /* default manual caching */ | |
1936 | rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; | |
cb451720 | 1937 | inc_rfc1001_len(work->response_buf, 16); |
e2f34481 NJ |
1938 | |
1939 | if (!IS_ERR(treename)) | |
1940 | kfree(treename); | |
1941 | if (!IS_ERR(name)) | |
1942 | kfree(name); | |
1943 | ||
1944 | switch (status.ret) { | |
1945 | case KSMBD_TREE_CONN_STATUS_OK: | |
1946 | rsp->hdr.Status = STATUS_SUCCESS; | |
1947 | rc = 0; | |
1948 | break; | |
4963d74f | 1949 | case -ESTALE: |
fe54833d | 1950 | case -ENOENT: |
e2f34481 | 1951 | case KSMBD_TREE_CONN_STATUS_NO_SHARE: |
fe54833d | 1952 | rsp->hdr.Status = STATUS_BAD_NETWORK_NAME; |
e2f34481 NJ |
1953 | break; |
1954 | case -ENOMEM: | |
1955 | case KSMBD_TREE_CONN_STATUS_NOMEM: | |
1956 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
1957 | break; | |
1958 | case KSMBD_TREE_CONN_STATUS_ERROR: | |
1959 | case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS: | |
1960 | case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS: | |
1961 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
1962 | break; | |
1963 | case -EINVAL: | |
1964 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1965 | break; | |
1966 | default: | |
1967 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
1968 | } | |
1969 | ||
1970 | return rc; | |
1971 | } | |
1972 | ||
1973 | /** | |
1974 | * smb2_create_open_flags() - convert smb open flags to unix open flags | |
1975 | * @file_present: is file already present | |
1976 | * @access: file access flags | |
1977 | * @disposition: file disposition flags | |
6c5e36d1 | 1978 | * @may_flags: set with MAY_ flags |
e2f34481 NJ |
1979 | * |
1980 | * Return: file open flags | |
1981 | */ | |
1982 | static int smb2_create_open_flags(bool file_present, __le32 access, | |
6c5e36d1 HL |
1983 | __le32 disposition, |
1984 | int *may_flags) | |
e2f34481 NJ |
1985 | { |
1986 | int oflags = O_NONBLOCK | O_LARGEFILE; | |
1987 | ||
1988 | if (access & FILE_READ_DESIRED_ACCESS_LE && | |
6c5e36d1 | 1989 | access & FILE_WRITE_DESIRE_ACCESS_LE) { |
e2f34481 | 1990 | oflags |= O_RDWR; |
6c5e36d1 HL |
1991 | *may_flags = MAY_OPEN | MAY_READ | MAY_WRITE; |
1992 | } else if (access & FILE_WRITE_DESIRE_ACCESS_LE) { | |
e2f34481 | 1993 | oflags |= O_WRONLY; |
6c5e36d1 HL |
1994 | *may_flags = MAY_OPEN | MAY_WRITE; |
1995 | } else { | |
e2f34481 | 1996 | oflags |= O_RDONLY; |
6c5e36d1 HL |
1997 | *may_flags = MAY_OPEN | MAY_READ; |
1998 | } | |
e2f34481 NJ |
1999 | |
2000 | if (access == FILE_READ_ATTRIBUTES_LE) | |
2001 | oflags |= O_PATH; | |
2002 | ||
2003 | if (file_present) { | |
2004 | switch (disposition & FILE_CREATE_MASK_LE) { | |
2005 | case FILE_OPEN_LE: | |
2006 | case FILE_CREATE_LE: | |
2007 | break; | |
2008 | case FILE_SUPERSEDE_LE: | |
2009 | case FILE_OVERWRITE_LE: | |
2010 | case FILE_OVERWRITE_IF_LE: | |
2011 | oflags |= O_TRUNC; | |
2012 | break; | |
2013 | default: | |
2014 | break; | |
2015 | } | |
2016 | } else { | |
2017 | switch (disposition & FILE_CREATE_MASK_LE) { | |
2018 | case FILE_SUPERSEDE_LE: | |
2019 | case FILE_CREATE_LE: | |
2020 | case FILE_OPEN_IF_LE: | |
2021 | case FILE_OVERWRITE_IF_LE: | |
2022 | oflags |= O_CREAT; | |
2023 | break; | |
2024 | case FILE_OPEN_LE: | |
2025 | case FILE_OVERWRITE_LE: | |
2026 | oflags &= ~O_CREAT; | |
2027 | break; | |
2028 | default: | |
2029 | break; | |
2030 | } | |
2031 | } | |
6c5e36d1 | 2032 | |
e2f34481 NJ |
2033 | return oflags; |
2034 | } | |
2035 | ||
2036 | /** | |
2037 | * smb2_tree_disconnect() - handler for smb tree connect request | |
2038 | * @work: smb work containing request buffer | |
2039 | * | |
2040 | * Return: 0 | |
2041 | */ | |
2042 | int smb2_tree_disconnect(struct ksmbd_work *work) | |
2043 | { | |
cb451720 | 2044 | struct smb2_tree_disconnect_rsp *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
2045 | struct ksmbd_session *sess = work->sess; |
2046 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2047 | ||
2048 | rsp->StructureSize = cpu_to_le16(4); | |
cb451720 | 2049 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
2050 | |
2051 | ksmbd_debug(SMB, "request\n"); | |
2052 | ||
2053 | if (!tcon) { | |
cb451720 NJ |
2054 | struct smb2_tree_disconnect_req *req = |
2055 | smb2_get_msg(work->request_buf); | |
e2f34481 NJ |
2056 | |
2057 | ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); | |
2058 | rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; | |
2059 | smb2_set_err_rsp(work); | |
2060 | return 0; | |
2061 | } | |
2062 | ||
2063 | ksmbd_close_tree_conn_fds(work); | |
2064 | ksmbd_tree_conn_disconnect(sess, tcon); | |
cf6531d9 | 2065 | work->tcon = NULL; |
e2f34481 NJ |
2066 | return 0; |
2067 | } | |
2068 | ||
2069 | /** | |
2070 | * smb2_session_logoff() - handler for session log off request | |
2071 | * @work: smb work containing request buffer | |
2072 | * | |
2073 | * Return: 0 | |
2074 | */ | |
2075 | int smb2_session_logoff(struct ksmbd_work *work) | |
2076 | { | |
2077 | struct ksmbd_conn *conn = work->conn; | |
cb451720 | 2078 | struct smb2_logoff_rsp *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
2079 | struct ksmbd_session *sess = work->sess; |
2080 | ||
2081 | rsp->StructureSize = cpu_to_le16(4); | |
cb451720 | 2082 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
2083 | |
2084 | ksmbd_debug(SMB, "request\n"); | |
2085 | ||
e2f34481 NJ |
2086 | /* setting CifsExiting here may race with start_tcp_sess */ |
2087 | ksmbd_conn_set_need_reconnect(work); | |
2088 | ksmbd_close_session_fds(work); | |
2089 | ksmbd_conn_wait_idle(conn); | |
2090 | ||
2091 | if (ksmbd_tree_conn_session_logoff(sess)) { | |
cb451720 | 2092 | struct smb2_logoff_req *req = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
2093 | |
2094 | ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); | |
2095 | rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; | |
2096 | smb2_set_err_rsp(work); | |
2097 | return 0; | |
2098 | } | |
2099 | ||
2100 | ksmbd_destroy_file_table(&sess->file_table); | |
2101 | sess->state = SMB2_SESSION_EXPIRED; | |
2102 | ||
2103 | ksmbd_free_user(sess->user); | |
2104 | sess->user = NULL; | |
2105 | ||
2106 | /* let start_tcp_sess free connection info now */ | |
2107 | ksmbd_conn_set_need_negotiate(work); | |
2108 | return 0; | |
2109 | } | |
2110 | ||
2111 | /** | |
2112 | * create_smb2_pipe() - create IPC pipe | |
2113 | * @work: smb work containing request buffer | |
2114 | * | |
2115 | * Return: 0 on success, otherwise error | |
2116 | */ | |
2117 | static noinline int create_smb2_pipe(struct ksmbd_work *work) | |
2118 | { | |
cb451720 NJ |
2119 | struct smb2_create_rsp *rsp = smb2_get_msg(work->response_buf); |
2120 | struct smb2_create_req *req = smb2_get_msg(work->request_buf); | |
e2f34481 NJ |
2121 | int id; |
2122 | int err; | |
2123 | char *name; | |
2124 | ||
2125 | name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength), | |
070fb21e | 2126 | 1, work->conn->local_nls); |
e2f34481 NJ |
2127 | if (IS_ERR(name)) { |
2128 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
2129 | err = PTR_ERR(name); | |
2130 | goto out; | |
2131 | } | |
2132 | ||
2133 | id = ksmbd_session_rpc_open(work->sess, name); | |
79caa960 | 2134 | if (id < 0) { |
bde1694a | 2135 | pr_err("Unable to open RPC pipe: %d\n", id); |
79caa960 MM |
2136 | err = id; |
2137 | goto out; | |
2138 | } | |
e2f34481 | 2139 | |
79caa960 | 2140 | rsp->hdr.Status = STATUS_SUCCESS; |
e2f34481 NJ |
2141 | rsp->StructureSize = cpu_to_le16(89); |
2142 | rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE; | |
26a2787d | 2143 | rsp->Flags = 0; |
e2f34481 NJ |
2144 | rsp->CreateAction = cpu_to_le32(FILE_OPENED); |
2145 | ||
2146 | rsp->CreationTime = cpu_to_le64(0); | |
2147 | rsp->LastAccessTime = cpu_to_le64(0); | |
2148 | rsp->ChangeTime = cpu_to_le64(0); | |
2149 | rsp->AllocationSize = cpu_to_le64(0); | |
2150 | rsp->EndofFile = cpu_to_le64(0); | |
26a2787d | 2151 | rsp->FileAttributes = FILE_ATTRIBUTE_NORMAL_LE; |
e2f34481 | 2152 | rsp->Reserved2 = 0; |
2d004c6c | 2153 | rsp->VolatileFileId = id; |
e2f34481 NJ |
2154 | rsp->PersistentFileId = 0; |
2155 | rsp->CreateContextsOffset = 0; | |
2156 | rsp->CreateContextsLength = 0; | |
2157 | ||
cb451720 | 2158 | inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/ |
e2f34481 NJ |
2159 | kfree(name); |
2160 | return 0; | |
2161 | ||
2162 | out: | |
79caa960 MM |
2163 | switch (err) { |
2164 | case -EINVAL: | |
2165 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
2166 | break; | |
2167 | case -ENOSPC: | |
2168 | case -ENOMEM: | |
2169 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
2170 | break; | |
2171 | } | |
2172 | ||
2173 | if (!IS_ERR(name)) | |
2174 | kfree(name); | |
2175 | ||
e2f34481 NJ |
2176 | smb2_set_err_rsp(work); |
2177 | return err; | |
2178 | } | |
2179 | ||
e2f34481 NJ |
2180 | /** |
2181 | * smb2_set_ea() - handler for setting extended attributes using set | |
2182 | * info command | |
2183 | * @eabuf: set info command buffer | |
9496e268 | 2184 | * @buf_len: set info command buffer length |
e2f34481 NJ |
2185 | * @path: dentry path for get ea |
2186 | * | |
2187 | * Return: 0 on success, otherwise error | |
2188 | */ | |
9496e268 | 2189 | static int smb2_set_ea(struct smb2_ea_info *eabuf, unsigned int buf_len, |
c22180a5 | 2190 | const struct path *path) |
e2f34481 | 2191 | { |
4609e1f1 | 2192 | struct mnt_idmap *idmap = mnt_idmap(path->mnt); |
e2f34481 NJ |
2193 | char *attr_name = NULL, *value; |
2194 | int rc = 0; | |
9496e268 NJ |
2195 | unsigned int next = 0; |
2196 | ||
2197 | if (buf_len < sizeof(struct smb2_ea_info) + eabuf->EaNameLength + | |
2198 | le16_to_cpu(eabuf->EaValueLength)) | |
2199 | return -EINVAL; | |
e2f34481 NJ |
2200 | |
2201 | attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL); | |
2202 | if (!attr_name) | |
2203 | return -ENOMEM; | |
2204 | ||
2205 | do { | |
2206 | if (!eabuf->EaNameLength) | |
2207 | goto next; | |
2208 | ||
2209 | ksmbd_debug(SMB, | |
070fb21e NJ |
2210 | "name : <%s>, name_len : %u, value_len : %u, next : %u\n", |
2211 | eabuf->name, eabuf->EaNameLength, | |
2212 | le16_to_cpu(eabuf->EaValueLength), | |
2213 | le32_to_cpu(eabuf->NextEntryOffset)); | |
e2f34481 NJ |
2214 | |
2215 | if (eabuf->EaNameLength > | |
070fb21e | 2216 | (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) { |
e2f34481 NJ |
2217 | rc = -EINVAL; |
2218 | break; | |
2219 | } | |
2220 | ||
2221 | memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); | |
2222 | memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name, | |
070fb21e | 2223 | eabuf->EaNameLength); |
e2f34481 NJ |
2224 | attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0'; |
2225 | value = (char *)&eabuf->name + eabuf->EaNameLength + 1; | |
2226 | ||
2227 | if (!eabuf->EaValueLength) { | |
4609e1f1 | 2228 | rc = ksmbd_vfs_casexattr_len(idmap, |
af34983e | 2229 | path->dentry, |
e2f34481 NJ |
2230 | attr_name, |
2231 | XATTR_USER_PREFIX_LEN + | |
2232 | eabuf->EaNameLength); | |
2233 | ||
2234 | /* delete the EA only when it exits */ | |
2235 | if (rc > 0) { | |
4609e1f1 | 2236 | rc = ksmbd_vfs_remove_xattr(idmap, |
af34983e | 2237 | path->dentry, |
e2f34481 NJ |
2238 | attr_name); |
2239 | ||
2240 | if (rc < 0) { | |
2241 | ksmbd_debug(SMB, | |
070fb21e NJ |
2242 | "remove xattr failed(%d)\n", |
2243 | rc); | |
e2f34481 NJ |
2244 | break; |
2245 | } | |
2246 | } | |
2247 | ||
2248 | /* if the EA doesn't exist, just do nothing. */ | |
2249 | rc = 0; | |
2250 | } else { | |
4609e1f1 | 2251 | rc = ksmbd_vfs_setxattr(idmap, |
af34983e | 2252 | path->dentry, attr_name, value, |
070fb21e | 2253 | le16_to_cpu(eabuf->EaValueLength), 0); |
e2f34481 NJ |
2254 | if (rc < 0) { |
2255 | ksmbd_debug(SMB, | |
070fb21e NJ |
2256 | "ksmbd_vfs_setxattr is failed(%d)\n", |
2257 | rc); | |
e2f34481 NJ |
2258 | break; |
2259 | } | |
2260 | } | |
2261 | ||
2262 | next: | |
2263 | next = le32_to_cpu(eabuf->NextEntryOffset); | |
9496e268 NJ |
2264 | if (next == 0 || buf_len < next) |
2265 | break; | |
2266 | buf_len -= next; | |
e2f34481 | 2267 | eabuf = (struct smb2_ea_info *)((char *)eabuf + next); |
9496e268 NJ |
2268 | if (next < (u32)eabuf->EaNameLength + le16_to_cpu(eabuf->EaValueLength)) |
2269 | break; | |
2270 | ||
e2f34481 NJ |
2271 | } while (next != 0); |
2272 | ||
2273 | kfree(attr_name); | |
2274 | return rc; | |
2275 | } | |
2276 | ||
c22180a5 | 2277 | static noinline int smb2_set_stream_name_xattr(const struct path *path, |
070fb21e NJ |
2278 | struct ksmbd_file *fp, |
2279 | char *stream_name, int s_type) | |
e2f34481 | 2280 | { |
4609e1f1 | 2281 | struct mnt_idmap *idmap = mnt_idmap(path->mnt); |
e2f34481 NJ |
2282 | size_t xattr_stream_size; |
2283 | char *xattr_stream_name; | |
2284 | int rc; | |
2285 | ||
2286 | rc = ksmbd_vfs_xattr_stream_name(stream_name, | |
2287 | &xattr_stream_name, | |
2288 | &xattr_stream_size, | |
2289 | s_type); | |
2290 | if (rc) | |
2291 | return rc; | |
2292 | ||
2293 | fp->stream.name = xattr_stream_name; | |
2294 | fp->stream.size = xattr_stream_size; | |
2295 | ||
2296 | /* Check if there is stream prefix in xattr space */ | |
4609e1f1 | 2297 | rc = ksmbd_vfs_casexattr_len(idmap, |
af34983e | 2298 | path->dentry, |
e2f34481 NJ |
2299 | xattr_stream_name, |
2300 | xattr_stream_size); | |
2301 | if (rc >= 0) | |
2302 | return 0; | |
2303 | ||
2304 | if (fp->cdoption == FILE_OPEN_LE) { | |
2305 | ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc); | |
2306 | return -EBADF; | |
2307 | } | |
2308 | ||
4609e1f1 | 2309 | rc = ksmbd_vfs_setxattr(idmap, path->dentry, |
465d7204 | 2310 | xattr_stream_name, NULL, 0, 0); |
e2f34481 | 2311 | if (rc < 0) |
bde1694a | 2312 | pr_err("Failed to store XATTR stream name :%d\n", rc); |
e2f34481 NJ |
2313 | return 0; |
2314 | } | |
2315 | ||
c22180a5 | 2316 | static int smb2_remove_smb_xattrs(const struct path *path) |
e2f34481 | 2317 | { |
4609e1f1 | 2318 | struct mnt_idmap *idmap = mnt_idmap(path->mnt); |
e2f34481 NJ |
2319 | char *name, *xattr_list = NULL; |
2320 | ssize_t xattr_list_len; | |
2321 | int err = 0; | |
2322 | ||
ef24c962 | 2323 | xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); |
e2f34481 NJ |
2324 | if (xattr_list_len < 0) { |
2325 | goto out; | |
2326 | } else if (!xattr_list_len) { | |
2327 | ksmbd_debug(SMB, "empty xattr in the file\n"); | |
2328 | goto out; | |
2329 | } | |
2330 | ||
2331 | for (name = xattr_list; name - xattr_list < xattr_list_len; | |
2332 | name += strlen(name) + 1) { | |
2333 | ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name)); | |
2334 | ||
17661ecf NJ |
2335 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) && |
2336 | !strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, | |
2337 | STREAM_PREFIX_LEN)) { | |
4609e1f1 | 2338 | err = ksmbd_vfs_remove_xattr(idmap, path->dentry, |
17661ecf NJ |
2339 | name); |
2340 | if (err) | |
2341 | ksmbd_debug(SMB, "remove xattr failed : %s\n", | |
2342 | name); | |
2343 | } | |
e2f34481 NJ |
2344 | } |
2345 | out: | |
79f6b11a | 2346 | kvfree(xattr_list); |
e2f34481 NJ |
2347 | return err; |
2348 | } | |
2349 | ||
c22180a5 | 2350 | static int smb2_create_truncate(const struct path *path) |
e2f34481 NJ |
2351 | { |
2352 | int rc = vfs_truncate(path, 0); | |
2353 | ||
2354 | if (rc) { | |
bde1694a | 2355 | pr_err("vfs_truncate failed, rc %d\n", rc); |
e2f34481 NJ |
2356 | return rc; |
2357 | } | |
2358 | ||
ef24c962 | 2359 | rc = smb2_remove_smb_xattrs(path); |
e2f34481 NJ |
2360 | if (rc == -EOPNOTSUPP) |
2361 | rc = 0; | |
2362 | if (rc) | |
2363 | ksmbd_debug(SMB, | |
070fb21e NJ |
2364 | "ksmbd_truncate_stream_name_xattr failed, rc %d\n", |
2365 | rc); | |
e2f34481 NJ |
2366 | return rc; |
2367 | } | |
2368 | ||
c22180a5 | 2369 | static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, const struct path *path, |
070fb21e | 2370 | struct ksmbd_file *fp) |
e2f34481 NJ |
2371 | { |
2372 | struct xattr_dos_attrib da = {0}; | |
2373 | int rc; | |
2374 | ||
2375 | if (!test_share_config_flag(tcon->share_conf, | |
2376 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) | |
2377 | return; | |
2378 | ||
2379 | da.version = 4; | |
2380 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
2381 | da.itime = da.create_time = fp->create_time; | |
2382 | da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | | |
2383 | XATTR_DOSINFO_ITIME; | |
2384 | ||
4609e1f1 | 2385 | rc = ksmbd_vfs_set_dos_attrib_xattr(mnt_idmap(path->mnt), |
af34983e | 2386 | path->dentry, &da); |
e2f34481 NJ |
2387 | if (rc) |
2388 | ksmbd_debug(SMB, "failed to store file attribute into xattr\n"); | |
2389 | } | |
2390 | ||
2391 | static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon, | |
c22180a5 | 2392 | const struct path *path, struct ksmbd_file *fp) |
e2f34481 NJ |
2393 | { |
2394 | struct xattr_dos_attrib da; | |
2395 | int rc; | |
2396 | ||
26a2787d | 2397 | fp->f_ci->m_fattr &= ~(FILE_ATTRIBUTE_HIDDEN_LE | FILE_ATTRIBUTE_SYSTEM_LE); |
e2f34481 NJ |
2398 | |
2399 | /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */ | |
2400 | if (!test_share_config_flag(tcon->share_conf, | |
64b39f4a | 2401 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) |
e2f34481 NJ |
2402 | return; |
2403 | ||
4609e1f1 | 2404 | rc = ksmbd_vfs_get_dos_attrib_xattr(mnt_idmap(path->mnt), |
af34983e | 2405 | path->dentry, &da); |
e2f34481 NJ |
2406 | if (rc > 0) { |
2407 | fp->f_ci->m_fattr = cpu_to_le32(da.attr); | |
2408 | fp->create_time = da.create_time; | |
2409 | fp->itime = da.itime; | |
2410 | } | |
2411 | } | |
2412 | ||
64b39f4a | 2413 | static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name, |
070fb21e | 2414 | int open_flags, umode_t posix_mode, bool is_dir) |
e2f34481 NJ |
2415 | { |
2416 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2417 | struct ksmbd_share_config *share = tcon->share_conf; | |
2418 | umode_t mode; | |
2419 | int rc; | |
2420 | ||
2421 | if (!(open_flags & O_CREAT)) | |
2422 | return -EBADF; | |
2423 | ||
2424 | ksmbd_debug(SMB, "file does not exist, so creating\n"); | |
2425 | if (is_dir == true) { | |
2426 | ksmbd_debug(SMB, "creating directory\n"); | |
2427 | ||
2428 | mode = share_config_directory_mode(share, posix_mode); | |
2429 | rc = ksmbd_vfs_mkdir(work, name, mode); | |
2430 | if (rc) | |
2431 | return rc; | |
2432 | } else { | |
2433 | ksmbd_debug(SMB, "creating regular file\n"); | |
2434 | ||
2435 | mode = share_config_create_mode(share, posix_mode); | |
2436 | rc = ksmbd_vfs_create(work, name, mode); | |
2437 | if (rc) | |
2438 | return rc; | |
2439 | } | |
2440 | ||
265fd199 | 2441 | rc = ksmbd_vfs_kern_path(work, name, 0, path, 0); |
e2f34481 | 2442 | if (rc) { |
bde1694a NJ |
2443 | pr_err("cannot get linux path (%s), err = %d\n", |
2444 | name, rc); | |
e2f34481 NJ |
2445 | return rc; |
2446 | } | |
2447 | return 0; | |
2448 | } | |
2449 | ||
2450 | static int smb2_create_sd_buffer(struct ksmbd_work *work, | |
070fb21e | 2451 | struct smb2_create_req *req, |
c22180a5 | 2452 | const struct path *path) |
e2f34481 NJ |
2453 | { |
2454 | struct create_context *context; | |
21dd1fd6 | 2455 | struct create_sd_buf_req *sd_buf; |
e2f34481 NJ |
2456 | |
2457 | if (!req->CreateContextsOffset) | |
21dd1fd6 | 2458 | return -ENOENT; |
e2f34481 NJ |
2459 | |
2460 | /* Parse SD BUFFER create contexts */ | |
2461 | context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER); | |
21dd1fd6 HL |
2462 | if (!context) |
2463 | return -ENOENT; | |
2464 | else if (IS_ERR(context)) | |
2465 | return PTR_ERR(context); | |
e2f34481 | 2466 | |
21dd1fd6 HL |
2467 | ksmbd_debug(SMB, |
2468 | "Set ACLs using SMB2_CREATE_SD_BUFFER context\n"); | |
2469 | sd_buf = (struct create_sd_buf_req *)context; | |
8f77150c HL |
2470 | if (le16_to_cpu(context->DataOffset) + |
2471 | le32_to_cpu(context->DataLength) < | |
2472 | sizeof(struct create_sd_buf_req)) | |
2473 | return -EINVAL; | |
21dd1fd6 HL |
2474 | return set_info_sec(work->conn, work->tcon, path, &sd_buf->ntsd, |
2475 | le32_to_cpu(sd_buf->ccontext.DataLength), true); | |
e2f34481 NJ |
2476 | } |
2477 | ||
43205ca7 | 2478 | static void ksmbd_acls_fattr(struct smb_fattr *fattr, |
e67fe633 | 2479 | struct mnt_idmap *idmap, |
43205ca7 | 2480 | struct inode *inode) |
3d47e546 | 2481 | { |
e67fe633 CB |
2482 | vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode); |
2483 | vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); | |
276a3f7c CB |
2484 | |
2485 | fattr->cf_uid = vfsuid_into_kuid(vfsuid); | |
2486 | fattr->cf_gid = vfsgid_into_kgid(vfsgid); | |
3d47e546 | 2487 | fattr->cf_mode = inode->i_mode; |
777cad16 | 2488 | fattr->cf_acls = NULL; |
3d47e546 NJ |
2489 | fattr->cf_dacls = NULL; |
2490 | ||
777cad16 | 2491 | if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) { |
cac2f8b8 | 2492 | fattr->cf_acls = get_inode_acl(inode, ACL_TYPE_ACCESS); |
777cad16 | 2493 | if (S_ISDIR(inode->i_mode)) |
cac2f8b8 | 2494 | fattr->cf_dacls = get_inode_acl(inode, ACL_TYPE_DEFAULT); |
777cad16 | 2495 | } |
3d47e546 NJ |
2496 | } |
2497 | ||
e2f34481 NJ |
2498 | /** |
2499 | * smb2_open() - handler for smb file open request | |
2500 | * @work: smb work containing request buffer | |
2501 | * | |
2502 | * Return: 0 on success, otherwise error | |
2503 | */ | |
2504 | int smb2_open(struct ksmbd_work *work) | |
2505 | { | |
2506 | struct ksmbd_conn *conn = work->conn; | |
2507 | struct ksmbd_session *sess = work->sess; | |
2508 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2509 | struct smb2_create_req *req; | |
cb451720 | 2510 | struct smb2_create_rsp *rsp; |
e2f34481 NJ |
2511 | struct path path; |
2512 | struct ksmbd_share_config *share = tcon->share_conf; | |
2513 | struct ksmbd_file *fp = NULL; | |
2514 | struct file *filp = NULL; | |
13e83a49 | 2515 | struct mnt_idmap *idmap = NULL; |
e2f34481 NJ |
2516 | struct kstat stat; |
2517 | struct create_context *context; | |
2518 | struct lease_ctx_info *lc = NULL; | |
2519 | struct create_ea_buf_req *ea_buf = NULL; | |
2520 | struct oplock_info *opinfo; | |
2521 | __le32 *next_ptr = NULL; | |
6c5e36d1 | 2522 | int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0; |
265fd199 | 2523 | int rc = 0; |
e2f34481 NJ |
2524 | int contxt_cnt = 0, query_disk_id = 0; |
2525 | int maximal_access_ctxt = 0, posix_ctxt = 0; | |
2526 | int s_type = 0; | |
2527 | int next_off = 0; | |
2528 | char *name = NULL; | |
2529 | char *stream_name = NULL; | |
2530 | bool file_present = false, created = false, already_permitted = false; | |
e2f34481 NJ |
2531 | int share_ret, need_truncate = 0; |
2532 | u64 time; | |
2533 | umode_t posix_mode = 0; | |
2534 | __le32 daccess, maximal_access = 0; | |
2535 | ||
e2f34481 NJ |
2536 | WORK_BUFFERS(work, req, rsp); |
2537 | ||
2538 | if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off && | |
64b39f4a | 2539 | (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { |
e2f34481 NJ |
2540 | ksmbd_debug(SMB, "invalid flag in chained command\n"); |
2541 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
2542 | smb2_set_err_rsp(work); | |
2543 | return -EINVAL; | |
2544 | } | |
2545 | ||
2546 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { | |
2547 | ksmbd_debug(SMB, "IPC pipe create request\n"); | |
2548 | return create_smb2_pipe(work); | |
2549 | } | |
2550 | ||
2551 | if (req->NameLength) { | |
2552 | if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) && | |
64b39f4a | 2553 | *(char *)req->Buffer == '\\') { |
bde1694a | 2554 | pr_err("not allow directory name included leading slash\n"); |
e2f34481 NJ |
2555 | rc = -EINVAL; |
2556 | goto err_out1; | |
2557 | } | |
2558 | ||
80917f17 | 2559 | name = smb2_get_name(req->Buffer, |
e2f34481 NJ |
2560 | le16_to_cpu(req->NameLength), |
2561 | work->conn->local_nls); | |
2562 | if (IS_ERR(name)) { | |
2563 | rc = PTR_ERR(name); | |
2564 | if (rc != -ENOMEM) | |
2565 | rc = -ENOENT; | |
8b99f350 | 2566 | name = NULL; |
e2f34481 NJ |
2567 | goto err_out1; |
2568 | } | |
2569 | ||
2570 | ksmbd_debug(SMB, "converted name = %s\n", name); | |
2571 | if (strchr(name, ':')) { | |
2572 | if (!test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2573 | KSMBD_SHARE_FLAG_STREAMS)) { |
e2f34481 NJ |
2574 | rc = -EBADF; |
2575 | goto err_out1; | |
2576 | } | |
2577 | rc = parse_stream_name(name, &stream_name, &s_type); | |
2578 | if (rc < 0) | |
2579 | goto err_out1; | |
2580 | } | |
2581 | ||
2582 | rc = ksmbd_validate_filename(name); | |
2583 | if (rc < 0) | |
2584 | goto err_out1; | |
2585 | ||
2586 | if (ksmbd_share_veto_filename(share, name)) { | |
2587 | rc = -ENOENT; | |
2588 | ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n", | |
070fb21e | 2589 | name); |
e2f34481 NJ |
2590 | goto err_out1; |
2591 | } | |
2592 | } else { | |
265fd199 | 2593 | name = kstrdup("", GFP_KERNEL); |
e2f34481 | 2594 | if (!name) { |
e2f34481 NJ |
2595 | rc = -ENOMEM; |
2596 | goto err_out1; | |
2597 | } | |
e2f34481 NJ |
2598 | } |
2599 | ||
2600 | req_op_level = req->RequestedOplockLevel; | |
73f9dad5 | 2601 | if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) |
e2f34481 | 2602 | lc = parse_lease_state(req); |
e2f34481 | 2603 | |
26a2787d | 2604 | if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE)) { |
bde1694a NJ |
2605 | pr_err("Invalid impersonationlevel : 0x%x\n", |
2606 | le32_to_cpu(req->ImpersonationLevel)); | |
e2f34481 NJ |
2607 | rc = -EIO; |
2608 | rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL; | |
2609 | goto err_out1; | |
2610 | } | |
2611 | ||
26a2787d | 2612 | if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK_LE)) { |
bde1694a NJ |
2613 | pr_err("Invalid create options : 0x%x\n", |
2614 | le32_to_cpu(req->CreateOptions)); | |
e2f34481 NJ |
2615 | rc = -EINVAL; |
2616 | goto err_out1; | |
2617 | } else { | |
e2f34481 | 2618 | if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE && |
64b39f4a | 2619 | req->CreateOptions & FILE_RANDOM_ACCESS_LE) |
e2f34481 NJ |
2620 | req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE); |
2621 | ||
070fb21e NJ |
2622 | if (req->CreateOptions & |
2623 | (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION | | |
2624 | FILE_RESERVE_OPFILTER_LE)) { | |
e2f34481 NJ |
2625 | rc = -EOPNOTSUPP; |
2626 | goto err_out1; | |
2627 | } | |
2628 | ||
2629 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { | |
2630 | if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) { | |
2631 | rc = -EINVAL; | |
2632 | goto err_out1; | |
64b39f4a | 2633 | } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) { |
e2f34481 | 2634 | req->CreateOptions = ~(FILE_NO_COMPRESSION_LE); |
64b39f4a | 2635 | } |
e2f34481 NJ |
2636 | } |
2637 | } | |
2638 | ||
2639 | if (le32_to_cpu(req->CreateDisposition) > | |
070fb21e | 2640 | le32_to_cpu(FILE_OVERWRITE_IF_LE)) { |
bde1694a NJ |
2641 | pr_err("Invalid create disposition : 0x%x\n", |
2642 | le32_to_cpu(req->CreateDisposition)); | |
e2f34481 NJ |
2643 | rc = -EINVAL; |
2644 | goto err_out1; | |
2645 | } | |
2646 | ||
2647 | if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) { | |
bde1694a NJ |
2648 | pr_err("Invalid desired access : 0x%x\n", |
2649 | le32_to_cpu(req->DesiredAccess)); | |
e2f34481 NJ |
2650 | rc = -EACCES; |
2651 | goto err_out1; | |
2652 | } | |
2653 | ||
26a2787d | 2654 | if (req->FileAttributes && !(req->FileAttributes & FILE_ATTRIBUTE_MASK_LE)) { |
bde1694a NJ |
2655 | pr_err("Invalid file attribute : 0x%x\n", |
2656 | le32_to_cpu(req->FileAttributes)); | |
e2f34481 NJ |
2657 | rc = -EINVAL; |
2658 | goto err_out1; | |
2659 | } | |
2660 | ||
2661 | if (req->CreateContextsOffset) { | |
2662 | /* Parse non-durable handle create contexts */ | |
2663 | context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER); | |
f19b3967 NJ |
2664 | if (IS_ERR(context)) { |
2665 | rc = PTR_ERR(context); | |
2666 | goto err_out1; | |
2667 | } else if (context) { | |
e2f34481 | 2668 | ea_buf = (struct create_ea_buf_req *)context; |
8f77150c HL |
2669 | if (le16_to_cpu(context->DataOffset) + |
2670 | le32_to_cpu(context->DataLength) < | |
2671 | sizeof(struct create_ea_buf_req)) { | |
2672 | rc = -EINVAL; | |
2673 | goto err_out1; | |
2674 | } | |
e2f34481 NJ |
2675 | if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) { |
2676 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
2677 | rc = -EACCES; | |
2678 | goto err_out1; | |
2679 | } | |
2680 | } | |
2681 | ||
2682 | context = smb2_find_context_vals(req, | |
070fb21e | 2683 | SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST); |
f19b3967 NJ |
2684 | if (IS_ERR(context)) { |
2685 | rc = PTR_ERR(context); | |
2686 | goto err_out1; | |
2687 | } else if (context) { | |
e2f34481 | 2688 | ksmbd_debug(SMB, |
070fb21e | 2689 | "get query maximal access context\n"); |
e2f34481 NJ |
2690 | maximal_access_ctxt = 1; |
2691 | } | |
2692 | ||
2693 | context = smb2_find_context_vals(req, | |
070fb21e | 2694 | SMB2_CREATE_TIMEWARP_REQUEST); |
f19b3967 NJ |
2695 | if (IS_ERR(context)) { |
2696 | rc = PTR_ERR(context); | |
2697 | goto err_out1; | |
2698 | } else if (context) { | |
e2f34481 NJ |
2699 | ksmbd_debug(SMB, "get timewarp context\n"); |
2700 | rc = -EBADF; | |
2701 | goto err_out1; | |
2702 | } | |
2703 | ||
2704 | if (tcon->posix_extensions) { | |
2705 | context = smb2_find_context_vals(req, | |
070fb21e | 2706 | SMB2_CREATE_TAG_POSIX); |
f19b3967 NJ |
2707 | if (IS_ERR(context)) { |
2708 | rc = PTR_ERR(context); | |
2709 | goto err_out1; | |
2710 | } else if (context) { | |
e2f34481 NJ |
2711 | struct create_posix *posix = |
2712 | (struct create_posix *)context; | |
8f77150c HL |
2713 | if (le16_to_cpu(context->DataOffset) + |
2714 | le32_to_cpu(context->DataLength) < | |
9ca8581e | 2715 | sizeof(struct create_posix) - 4) { |
8f77150c HL |
2716 | rc = -EINVAL; |
2717 | goto err_out1; | |
2718 | } | |
e2f34481 NJ |
2719 | ksmbd_debug(SMB, "get posix context\n"); |
2720 | ||
2721 | posix_mode = le32_to_cpu(posix->Mode); | |
2722 | posix_ctxt = 1; | |
2723 | } | |
2724 | } | |
2725 | } | |
2726 | ||
2727 | if (ksmbd_override_fsids(work)) { | |
2728 | rc = -ENOMEM; | |
2729 | goto err_out1; | |
2730 | } | |
2731 | ||
265fd199 | 2732 | rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1); |
4ea47798 NJ |
2733 | if (!rc) { |
2734 | if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) { | |
e2f34481 NJ |
2735 | /* |
2736 | * If file exists with under flags, return access | |
2737 | * denied error. | |
2738 | */ | |
2739 | if (req->CreateDisposition == FILE_OVERWRITE_IF_LE || | |
64b39f4a | 2740 | req->CreateDisposition == FILE_OPEN_IF_LE) { |
e2f34481 NJ |
2741 | rc = -EACCES; |
2742 | path_put(&path); | |
2743 | goto err_out; | |
2744 | } | |
2745 | ||
64b39f4a | 2746 | if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 2747 | ksmbd_debug(SMB, |
070fb21e | 2748 | "User does not have write permission\n"); |
e2f34481 NJ |
2749 | rc = -EACCES; |
2750 | path_put(&path); | |
2751 | goto err_out; | |
2752 | } | |
4ea47798 NJ |
2753 | } else if (d_is_symlink(path.dentry)) { |
2754 | rc = -EACCES; | |
2755 | path_put(&path); | |
2756 | goto err_out; | |
e2f34481 NJ |
2757 | } |
2758 | } | |
2759 | ||
2760 | if (rc) { | |
265fd199 | 2761 | if (rc != -ENOENT) |
e2f34481 | 2762 | goto err_out; |
e2f34481 | 2763 | ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n", |
070fb21e | 2764 | name, rc); |
e2f34481 NJ |
2765 | rc = 0; |
2766 | } else { | |
2767 | file_present = true; | |
13e83a49 | 2768 | idmap = mnt_idmap(path.mnt); |
e2f34481 NJ |
2769 | } |
2770 | if (stream_name) { | |
2771 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { | |
2772 | if (s_type == DATA_STREAM) { | |
2773 | rc = -EIO; | |
2774 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; | |
2775 | } | |
2776 | } else { | |
823d0d3e NJ |
2777 | if (file_present && S_ISDIR(d_inode(path.dentry)->i_mode) && |
2778 | s_type == DATA_STREAM) { | |
e2f34481 NJ |
2779 | rc = -EIO; |
2780 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE && | |
26a2787d | 2785 | req->FileAttributes & FILE_ATTRIBUTE_NORMAL_LE) { |
e2f34481 NJ |
2786 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
2787 | rc = -EIO; | |
2788 | } | |
2789 | ||
2790 | if (rc < 0) | |
2791 | goto err_out; | |
2792 | } | |
2793 | ||
64b39f4a | 2794 | if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE && |
823d0d3e NJ |
2795 | S_ISDIR(d_inode(path.dentry)->i_mode) && |
2796 | !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
e2f34481 | 2797 | ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n", |
070fb21e | 2798 | name, req->CreateOptions); |
e2f34481 NJ |
2799 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; |
2800 | rc = -EIO; | |
2801 | goto err_out; | |
2802 | } | |
2803 | ||
2804 | if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) && | |
64b39f4a | 2805 | !(req->CreateDisposition == FILE_CREATE_LE) && |
823d0d3e | 2806 | !S_ISDIR(d_inode(path.dentry)->i_mode)) { |
e2f34481 NJ |
2807 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
2808 | rc = -EIO; | |
2809 | goto err_out; | |
2810 | } | |
2811 | ||
2812 | if (!stream_name && file_present && | |
64b39f4a | 2813 | req->CreateDisposition == FILE_CREATE_LE) { |
e2f34481 NJ |
2814 | rc = -EEXIST; |
2815 | goto err_out; | |
2816 | } | |
2817 | ||
e2f34481 NJ |
2818 | daccess = smb_map_generic_desired_access(req->DesiredAccess); |
2819 | ||
2820 | if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
ef24c962 | 2821 | rc = smb_check_perm_dacl(conn, &path, &daccess, |
070fb21e | 2822 | sess->user->uid); |
e2f34481 NJ |
2823 | if (rc) |
2824 | goto err_out; | |
2825 | } | |
2826 | ||
2827 | if (daccess & FILE_MAXIMAL_ACCESS_LE) { | |
2828 | if (!file_present) { | |
2829 | daccess = cpu_to_le32(GENERIC_ALL_FLAGS); | |
2830 | } else { | |
4609e1f1 | 2831 | rc = ksmbd_vfs_query_maximal_access(idmap, |
af34983e | 2832 | path.dentry, |
e2f34481 NJ |
2833 | &daccess); |
2834 | if (rc) | |
2835 | goto err_out; | |
2836 | already_permitted = true; | |
2837 | } | |
2838 | maximal_access = daccess; | |
2839 | } | |
2840 | ||
070fb21e | 2841 | open_flags = smb2_create_open_flags(file_present, daccess, |
6c5e36d1 HL |
2842 | req->CreateDisposition, |
2843 | &may_flags); | |
e2f34481 NJ |
2844 | |
2845 | if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { | |
2846 | if (open_flags & O_CREAT) { | |
2847 | ksmbd_debug(SMB, | |
070fb21e | 2848 | "User does not have write permission\n"); |
e2f34481 NJ |
2849 | rc = -EACCES; |
2850 | goto err_out; | |
2851 | } | |
2852 | } | |
2853 | ||
2854 | /*create file if not present */ | |
2855 | if (!file_present) { | |
2856 | rc = smb2_creat(work, &path, name, open_flags, posix_mode, | |
070fb21e | 2857 | req->CreateOptions & FILE_DIRECTORY_FILE_LE); |
d337a44e MM |
2858 | if (rc) { |
2859 | if (rc == -ENOENT) { | |
2860 | rc = -EIO; | |
2861 | rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND; | |
2862 | } | |
e2f34481 | 2863 | goto err_out; |
d337a44e | 2864 | } |
e2f34481 NJ |
2865 | |
2866 | created = true; | |
13e83a49 | 2867 | idmap = mnt_idmap(path.mnt); |
e2f34481 | 2868 | if (ea_buf) { |
9496e268 NJ |
2869 | if (le32_to_cpu(ea_buf->ccontext.DataLength) < |
2870 | sizeof(struct smb2_ea_info)) { | |
2871 | rc = -EINVAL; | |
2872 | goto err_out; | |
2873 | } | |
2874 | ||
2875 | rc = smb2_set_ea(&ea_buf->ea, | |
2876 | le32_to_cpu(ea_buf->ccontext.DataLength), | |
2877 | &path); | |
e2f34481 NJ |
2878 | if (rc == -EOPNOTSUPP) |
2879 | rc = 0; | |
2880 | else if (rc) | |
2881 | goto err_out; | |
2882 | } | |
2883 | } else if (!already_permitted) { | |
e2f34481 NJ |
2884 | /* FILE_READ_ATTRIBUTE is allowed without inode_permission, |
2885 | * because execute(search) permission on a parent directory, | |
2886 | * is already granted. | |
2887 | */ | |
64b39f4a | 2888 | if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) { |
4609e1f1 | 2889 | rc = inode_permission(idmap, |
6c5e36d1 HL |
2890 | d_inode(path.dentry), |
2891 | may_flags); | |
ff1d5727 | 2892 | if (rc) |
e2f34481 | 2893 | goto err_out; |
6c5e36d1 HL |
2894 | |
2895 | if ((daccess & FILE_DELETE_LE) || | |
2896 | (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
4609e1f1 | 2897 | rc = ksmbd_vfs_may_delete(idmap, |
af34983e | 2898 | path.dentry); |
6c5e36d1 HL |
2899 | if (rc) |
2900 | goto err_out; | |
2901 | } | |
e2f34481 NJ |
2902 | } |
2903 | } | |
2904 | ||
2905 | rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent)); | |
2906 | if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) { | |
2907 | rc = -EBUSY; | |
2908 | goto err_out; | |
2909 | } | |
2910 | ||
2911 | rc = 0; | |
2912 | filp = dentry_open(&path, open_flags, current_cred()); | |
2913 | if (IS_ERR(filp)) { | |
2914 | rc = PTR_ERR(filp); | |
bde1694a | 2915 | pr_err("dentry open for dir failed, rc %d\n", rc); |
e2f34481 NJ |
2916 | goto err_out; |
2917 | } | |
2918 | ||
2919 | if (file_present) { | |
2920 | if (!(open_flags & O_TRUNC)) | |
2921 | file_info = FILE_OPENED; | |
2922 | else | |
2923 | file_info = FILE_OVERWRITTEN; | |
2924 | ||
070fb21e NJ |
2925 | if ((req->CreateDisposition & FILE_CREATE_MASK_LE) == |
2926 | FILE_SUPERSEDE_LE) | |
e2f34481 | 2927 | file_info = FILE_SUPERSEDED; |
64b39f4a | 2928 | } else if (open_flags & O_CREAT) { |
e2f34481 | 2929 | file_info = FILE_CREATED; |
64b39f4a | 2930 | } |
e2f34481 NJ |
2931 | |
2932 | ksmbd_vfs_set_fadvise(filp, req->CreateOptions); | |
2933 | ||
2934 | /* Obtain Volatile-ID */ | |
2935 | fp = ksmbd_open_fd(work, filp); | |
2936 | if (IS_ERR(fp)) { | |
2937 | fput(filp); | |
2938 | rc = PTR_ERR(fp); | |
2939 | fp = NULL; | |
2940 | goto err_out; | |
2941 | } | |
2942 | ||
2943 | /* Get Persistent-ID */ | |
2944 | ksmbd_open_durable_fd(fp); | |
3867369e | 2945 | if (!has_file_id(fp->persistent_id)) { |
e2f34481 NJ |
2946 | rc = -ENOMEM; |
2947 | goto err_out; | |
2948 | } | |
2949 | ||
e2f34481 NJ |
2950 | fp->cdoption = req->CreateDisposition; |
2951 | fp->daccess = daccess; | |
2952 | fp->saccess = req->ShareAccess; | |
2953 | fp->coption = req->CreateOptions; | |
2954 | ||
2955 | /* Set default windows and posix acls if creating new file */ | |
2956 | if (created) { | |
2957 | int posix_acl_rc; | |
fba08fa0 | 2958 | struct inode *inode = d_inode(path.dentry); |
e2f34481 | 2959 | |
13e83a49 | 2960 | posix_acl_rc = ksmbd_vfs_inherit_posix_acl(idmap, |
138060ba | 2961 | path.dentry, |
af34983e | 2962 | d_inode(path.dentry->d_parent)); |
e2f34481 NJ |
2963 | if (posix_acl_rc) |
2964 | ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc); | |
2965 | ||
2966 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2967 | KSMBD_SHARE_FLAG_ACL_XATTR)) { |
ef24c962 | 2968 | rc = smb_inherit_dacl(conn, &path, sess->user->uid, |
070fb21e | 2969 | sess->user->gid); |
e2f34481 NJ |
2970 | } |
2971 | ||
2972 | if (rc) { | |
ef24c962 | 2973 | rc = smb2_create_sd_buffer(work, req, &path); |
e2f34481 NJ |
2974 | if (rc) { |
2975 | if (posix_acl_rc) | |
13e83a49 | 2976 | ksmbd_vfs_set_init_posix_acl(idmap, |
138060ba | 2977 | path.dentry); |
e2f34481 NJ |
2978 | |
2979 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2980 | KSMBD_SHARE_FLAG_ACL_XATTR)) { |
e2f34481 NJ |
2981 | struct smb_fattr fattr; |
2982 | struct smb_ntsd *pntsd; | |
3d47e546 | 2983 | int pntsd_size, ace_num = 0; |
e2f34481 | 2984 | |
e67fe633 | 2985 | ksmbd_acls_fattr(&fattr, idmap, inode); |
e6b1059f MM |
2986 | if (fattr.cf_acls) |
2987 | ace_num = fattr.cf_acls->a_count; | |
3d47e546 NJ |
2988 | if (fattr.cf_dacls) |
2989 | ace_num += fattr.cf_dacls->a_count; | |
e2f34481 NJ |
2990 | |
2991 | pntsd = kmalloc(sizeof(struct smb_ntsd) + | |
64b39f4a | 2992 | sizeof(struct smb_sid) * 3 + |
e2f34481 | 2993 | sizeof(struct smb_acl) + |
64b39f4a | 2994 | sizeof(struct smb_ace) * ace_num * 2, |
e2f34481 NJ |
2995 | GFP_KERNEL); |
2996 | if (!pntsd) | |
2997 | goto err_out; | |
2998 | ||
4d7ca409 | 2999 | rc = build_sec_desc(idmap, |
8f054118 | 3000 | pntsd, NULL, 0, |
070fb21e | 3001 | OWNER_SECINFO | |
af34983e HL |
3002 | GROUP_SECINFO | |
3003 | DACL_SECINFO, | |
070fb21e | 3004 | &pntsd_size, &fattr); |
e2f34481 NJ |
3005 | posix_acl_release(fattr.cf_acls); |
3006 | posix_acl_release(fattr.cf_dacls); | |
f2e78aff NJ |
3007 | if (rc) { |
3008 | kfree(pntsd); | |
3009 | goto err_out; | |
3010 | } | |
e2f34481 NJ |
3011 | |
3012 | rc = ksmbd_vfs_set_sd_xattr(conn, | |
4609e1f1 | 3013 | idmap, |
070fb21e NJ |
3014 | path.dentry, |
3015 | pntsd, | |
3016 | pntsd_size); | |
3d47e546 | 3017 | kfree(pntsd); |
e2f34481 | 3018 | if (rc) |
bde1694a NJ |
3019 | pr_err("failed to store ntacl in xattr : %d\n", |
3020 | rc); | |
e2f34481 NJ |
3021 | } |
3022 | } | |
3023 | } | |
3024 | rc = 0; | |
3025 | } | |
3026 | ||
3027 | if (stream_name) { | |
3028 | rc = smb2_set_stream_name_xattr(&path, | |
3029 | fp, | |
3030 | stream_name, | |
3031 | s_type); | |
3032 | if (rc) | |
3033 | goto err_out; | |
3034 | file_info = FILE_CREATED; | |
3035 | } | |
3036 | ||
3037 | fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE | | |
3038 | FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE)); | |
64b39f4a NJ |
3039 | if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC && |
3040 | !fp->attrib_only && !stream_name) { | |
e2f34481 NJ |
3041 | smb_break_all_oplock(work, fp); |
3042 | need_truncate = 1; | |
3043 | } | |
3044 | ||
3045 | /* fp should be searchable through ksmbd_inode.m_fp_list | |
3046 | * after daccess, saccess, attrib_only, and stream are | |
3047 | * initialized. | |
3048 | */ | |
3049 | write_lock(&fp->f_ci->m_lock); | |
3050 | list_add(&fp->node, &fp->f_ci->m_fp_list); | |
3051 | write_unlock(&fp->f_ci->m_lock); | |
3052 | ||
e2f34481 NJ |
3053 | /* Check delete pending among previous fp before oplock break */ |
3054 | if (ksmbd_inode_pending_delete(fp)) { | |
3055 | rc = -EBUSY; | |
3056 | goto err_out; | |
3057 | } | |
3058 | ||
3059 | share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp); | |
64b39f4a NJ |
3060 | if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) || |
3061 | (req_op_level == SMB2_OPLOCK_LEVEL_LEASE && | |
3062 | !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) { | |
ab0b263b | 3063 | if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) { |
e2f34481 NJ |
3064 | rc = share_ret; |
3065 | goto err_out; | |
3066 | } | |
3067 | } else { | |
3068 | if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) { | |
3069 | req_op_level = smb2_map_lease_to_oplock(lc->req_state); | |
3070 | ksmbd_debug(SMB, | |
070fb21e NJ |
3071 | "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n", |
3072 | name, req_op_level, lc->req_state); | |
e2f34481 NJ |
3073 | rc = find_same_lease_key(sess, fp->f_ci, lc); |
3074 | if (rc) | |
3075 | goto err_out; | |
3076 | } else if (open_flags == O_RDONLY && | |
64b39f4a NJ |
3077 | (req_op_level == SMB2_OPLOCK_LEVEL_BATCH || |
3078 | req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE)) | |
e2f34481 NJ |
3079 | req_op_level = SMB2_OPLOCK_LEVEL_II; |
3080 | ||
3081 | rc = smb_grant_oplock(work, req_op_level, | |
3082 | fp->persistent_id, fp, | |
3083 | le32_to_cpu(req->hdr.Id.SyncId.TreeId), | |
3084 | lc, share_ret); | |
3085 | if (rc < 0) | |
3086 | goto err_out; | |
3087 | } | |
3088 | ||
3089 | if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) | |
3090 | ksmbd_fd_set_delete_on_close(fp, file_info); | |
3091 | ||
3092 | if (need_truncate) { | |
3093 | rc = smb2_create_truncate(&path); | |
3094 | if (rc) | |
3095 | goto err_out; | |
3096 | } | |
3097 | ||
3098 | if (req->CreateContextsOffset) { | |
3099 | struct create_alloc_size_req *az_req; | |
3100 | ||
070fb21e NJ |
3101 | az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req, |
3102 | SMB2_CREATE_ALLOCATION_SIZE); | |
f19b3967 NJ |
3103 | if (IS_ERR(az_req)) { |
3104 | rc = PTR_ERR(az_req); | |
3105 | goto err_out; | |
3106 | } else if (az_req) { | |
8f77150c | 3107 | loff_t alloc_size; |
e2f34481 NJ |
3108 | int err; |
3109 | ||
8f77150c HL |
3110 | if (le16_to_cpu(az_req->ccontext.DataOffset) + |
3111 | le32_to_cpu(az_req->ccontext.DataLength) < | |
3112 | sizeof(struct create_alloc_size_req)) { | |
3113 | rc = -EINVAL; | |
3114 | goto err_out; | |
3115 | } | |
3116 | alloc_size = le64_to_cpu(az_req->AllocationSize); | |
e2f34481 | 3117 | ksmbd_debug(SMB, |
070fb21e NJ |
3118 | "request smb2 create allocate size : %llu\n", |
3119 | alloc_size); | |
e8c06191 NJ |
3120 | smb_break_all_levII_oplock(work, fp, 1); |
3121 | err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, | |
3122 | alloc_size); | |
e2f34481 NJ |
3123 | if (err < 0) |
3124 | ksmbd_debug(SMB, | |
e8c06191 | 3125 | "vfs_fallocate is failed : %d\n", |
070fb21e | 3126 | err); |
e2f34481 NJ |
3127 | } |
3128 | ||
64b39f4a | 3129 | context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID); |
f19b3967 NJ |
3130 | if (IS_ERR(context)) { |
3131 | rc = PTR_ERR(context); | |
3132 | goto err_out; | |
3133 | } else if (context) { | |
e2f34481 NJ |
3134 | ksmbd_debug(SMB, "get query on disk id context\n"); |
3135 | query_disk_id = 1; | |
3136 | } | |
3137 | } | |
3138 | ||
c90b31ea HL |
3139 | rc = ksmbd_vfs_getattr(&path, &stat); |
3140 | if (rc) | |
3141 | goto err_out; | |
3142 | ||
e2f34481 NJ |
3143 | if (stat.result_mask & STATX_BTIME) |
3144 | fp->create_time = ksmbd_UnixTimeToNT(stat.btime); | |
3145 | else | |
3146 | fp->create_time = ksmbd_UnixTimeToNT(stat.ctime); | |
3147 | if (req->FileAttributes || fp->f_ci->m_fattr == 0) | |
070fb21e NJ |
3148 | fp->f_ci->m_fattr = |
3149 | cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes))); | |
e2f34481 NJ |
3150 | |
3151 | if (!created) | |
3152 | smb2_update_xattrs(tcon, &path, fp); | |
3153 | else | |
3154 | smb2_new_xattrs(tcon, &path, fp); | |
3155 | ||
3156 | memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE); | |
3157 | ||
e2f34481 NJ |
3158 | rsp->StructureSize = cpu_to_le16(89); |
3159 | rcu_read_lock(); | |
3160 | opinfo = rcu_dereference(fp->f_opinfo); | |
3161 | rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0; | |
3162 | rcu_read_unlock(); | |
26a2787d | 3163 | rsp->Flags = 0; |
e2f34481 NJ |
3164 | rsp->CreateAction = cpu_to_le32(file_info); |
3165 | rsp->CreationTime = cpu_to_le64(fp->create_time); | |
3166 | time = ksmbd_UnixTimeToNT(stat.atime); | |
3167 | rsp->LastAccessTime = cpu_to_le64(time); | |
3168 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
3169 | rsp->LastWriteTime = cpu_to_le64(time); | |
3170 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
3171 | rsp->ChangeTime = cpu_to_le64(time); | |
3172 | rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 : | |
3173 | cpu_to_le64(stat.blocks << 9); | |
3174 | rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
3175 | rsp->FileAttributes = fp->f_ci->m_fattr; | |
3176 | ||
3177 | rsp->Reserved2 = 0; | |
3178 | ||
2d004c6c PA |
3179 | rsp->PersistentFileId = fp->persistent_id; |
3180 | rsp->VolatileFileId = fp->volatile_id; | |
e2f34481 NJ |
3181 | |
3182 | rsp->CreateContextsOffset = 0; | |
3183 | rsp->CreateContextsLength = 0; | |
cb451720 | 3184 | inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/ |
e2f34481 NJ |
3185 | |
3186 | /* If lease is request send lease context response */ | |
3187 | if (opinfo && opinfo->is_lease) { | |
3188 | struct create_context *lease_ccontext; | |
3189 | ||
3190 | ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n", | |
070fb21e | 3191 | name, opinfo->o_lease->state); |
e2f34481 NJ |
3192 | rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE; |
3193 | ||
3194 | lease_ccontext = (struct create_context *)rsp->Buffer; | |
3195 | contxt_cnt++; | |
3196 | create_lease_buf(rsp->Buffer, opinfo->o_lease); | |
3197 | le32_add_cpu(&rsp->CreateContextsLength, | |
3198 | conn->vals->create_lease_size); | |
cb451720 NJ |
3199 | inc_rfc1001_len(work->response_buf, |
3200 | conn->vals->create_lease_size); | |
e2f34481 NJ |
3201 | next_ptr = &lease_ccontext->Next; |
3202 | next_off = conn->vals->create_lease_size; | |
3203 | } | |
3204 | ||
e2f34481 NJ |
3205 | if (maximal_access_ctxt) { |
3206 | struct create_context *mxac_ccontext; | |
3207 | ||
3208 | if (maximal_access == 0) | |
4609e1f1 | 3209 | ksmbd_vfs_query_maximal_access(idmap, |
af34983e | 3210 | path.dentry, |
e2f34481 NJ |
3211 | &maximal_access); |
3212 | mxac_ccontext = (struct create_context *)(rsp->Buffer + | |
3213 | le32_to_cpu(rsp->CreateContextsLength)); | |
3214 | contxt_cnt++; | |
3215 | create_mxac_rsp_buf(rsp->Buffer + | |
3216 | le32_to_cpu(rsp->CreateContextsLength), | |
3217 | le32_to_cpu(maximal_access)); | |
3218 | le32_add_cpu(&rsp->CreateContextsLength, | |
3219 | conn->vals->create_mxac_size); | |
cb451720 NJ |
3220 | inc_rfc1001_len(work->response_buf, |
3221 | conn->vals->create_mxac_size); | |
e2f34481 NJ |
3222 | if (next_ptr) |
3223 | *next_ptr = cpu_to_le32(next_off); | |
3224 | next_ptr = &mxac_ccontext->Next; | |
3225 | next_off = conn->vals->create_mxac_size; | |
3226 | } | |
3227 | ||
3228 | if (query_disk_id) { | |
3229 | struct create_context *disk_id_ccontext; | |
3230 | ||
3231 | disk_id_ccontext = (struct create_context *)(rsp->Buffer + | |
3232 | le32_to_cpu(rsp->CreateContextsLength)); | |
3233 | contxt_cnt++; | |
3234 | create_disk_id_rsp_buf(rsp->Buffer + | |
3235 | le32_to_cpu(rsp->CreateContextsLength), | |
3236 | stat.ino, tcon->id); | |
3237 | le32_add_cpu(&rsp->CreateContextsLength, | |
3238 | conn->vals->create_disk_id_size); | |
cb451720 NJ |
3239 | inc_rfc1001_len(work->response_buf, |
3240 | conn->vals->create_disk_id_size); | |
e2f34481 NJ |
3241 | if (next_ptr) |
3242 | *next_ptr = cpu_to_le32(next_off); | |
3243 | next_ptr = &disk_id_ccontext->Next; | |
3244 | next_off = conn->vals->create_disk_id_size; | |
3245 | } | |
3246 | ||
3247 | if (posix_ctxt) { | |
e2f34481 NJ |
3248 | contxt_cnt++; |
3249 | create_posix_rsp_buf(rsp->Buffer + | |
3250 | le32_to_cpu(rsp->CreateContextsLength), | |
3251 | fp); | |
3252 | le32_add_cpu(&rsp->CreateContextsLength, | |
3253 | conn->vals->create_posix_size); | |
cb451720 NJ |
3254 | inc_rfc1001_len(work->response_buf, |
3255 | conn->vals->create_posix_size); | |
e2f34481 NJ |
3256 | if (next_ptr) |
3257 | *next_ptr = cpu_to_le32(next_off); | |
3258 | } | |
3259 | ||
3260 | if (contxt_cnt > 0) { | |
3261 | rsp->CreateContextsOffset = | |
cb451720 | 3262 | cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer)); |
e2f34481 NJ |
3263 | } |
3264 | ||
3265 | err_out: | |
3266 | if (file_present || created) | |
3267 | path_put(&path); | |
3268 | ksmbd_revert_fsids(work); | |
3269 | err_out1: | |
3270 | if (rc) { | |
3271 | if (rc == -EINVAL) | |
3272 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
3273 | else if (rc == -EOPNOTSUPP) | |
3274 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
265fd199 | 3275 | else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV) |
e2f34481 NJ |
3276 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
3277 | else if (rc == -ENOENT) | |
3278 | rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; | |
3279 | else if (rc == -EPERM) | |
3280 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
3281 | else if (rc == -EBUSY) | |
3282 | rsp->hdr.Status = STATUS_DELETE_PENDING; | |
3283 | else if (rc == -EBADF) | |
3284 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; | |
3285 | else if (rc == -ENOEXEC) | |
3286 | rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID; | |
3287 | else if (rc == -ENXIO) | |
3288 | rsp->hdr.Status = STATUS_NO_SUCH_DEVICE; | |
3289 | else if (rc == -EEXIST) | |
3290 | rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; | |
3291 | else if (rc == -EMFILE) | |
3292 | rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; | |
3293 | if (!rsp->hdr.Status) | |
3294 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
3295 | ||
e2f34481 NJ |
3296 | if (fp) |
3297 | ksmbd_fd_put(work, fp); | |
3298 | smb2_set_err_rsp(work); | |
3299 | ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status); | |
3300 | } | |
3301 | ||
50f500b7 | 3302 | kfree(name); |
e2f34481 NJ |
3303 | kfree(lc); |
3304 | ||
3305 | return 0; | |
3306 | } | |
3307 | ||
3308 | static int readdir_info_level_struct_sz(int info_level) | |
3309 | { | |
3310 | switch (info_level) { | |
3311 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3312 | return sizeof(struct file_full_directory_info); | |
3313 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3314 | return sizeof(struct file_both_directory_info); | |
3315 | case FILE_DIRECTORY_INFORMATION: | |
3316 | return sizeof(struct file_directory_info); | |
3317 | case FILE_NAMES_INFORMATION: | |
3318 | return sizeof(struct file_names_info); | |
3319 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3320 | return sizeof(struct file_id_full_dir_info); | |
3321 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3322 | return sizeof(struct file_id_both_directory_info); | |
3323 | case SMB_FIND_FILE_POSIX_INFO: | |
3324 | return sizeof(struct smb2_posix_info); | |
3325 | default: | |
3326 | return -EOPNOTSUPP; | |
3327 | } | |
3328 | } | |
3329 | ||
3330 | static int dentry_name(struct ksmbd_dir_info *d_info, int info_level) | |
3331 | { | |
3332 | switch (info_level) { | |
3333 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3334 | { | |
3335 | struct file_full_directory_info *ffdinfo; | |
3336 | ||
3337 | ffdinfo = (struct file_full_directory_info *)d_info->rptr; | |
3338 | d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset); | |
3339 | d_info->name = ffdinfo->FileName; | |
3340 | d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength); | |
3341 | return 0; | |
3342 | } | |
3343 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3344 | { | |
3345 | struct file_both_directory_info *fbdinfo; | |
3346 | ||
3347 | fbdinfo = (struct file_both_directory_info *)d_info->rptr; | |
3348 | d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset); | |
3349 | d_info->name = fbdinfo->FileName; | |
3350 | d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength); | |
3351 | return 0; | |
3352 | } | |
3353 | case FILE_DIRECTORY_INFORMATION: | |
3354 | { | |
3355 | struct file_directory_info *fdinfo; | |
3356 | ||
3357 | fdinfo = (struct file_directory_info *)d_info->rptr; | |
3358 | d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset); | |
3359 | d_info->name = fdinfo->FileName; | |
3360 | d_info->name_len = le32_to_cpu(fdinfo->FileNameLength); | |
3361 | return 0; | |
3362 | } | |
3363 | case FILE_NAMES_INFORMATION: | |
3364 | { | |
3365 | struct file_names_info *fninfo; | |
3366 | ||
3367 | fninfo = (struct file_names_info *)d_info->rptr; | |
3368 | d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset); | |
3369 | d_info->name = fninfo->FileName; | |
3370 | d_info->name_len = le32_to_cpu(fninfo->FileNameLength); | |
3371 | return 0; | |
3372 | } | |
3373 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3374 | { | |
3375 | struct file_id_full_dir_info *dinfo; | |
3376 | ||
3377 | dinfo = (struct file_id_full_dir_info *)d_info->rptr; | |
3378 | d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset); | |
3379 | d_info->name = dinfo->FileName; | |
3380 | d_info->name_len = le32_to_cpu(dinfo->FileNameLength); | |
3381 | return 0; | |
3382 | } | |
3383 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3384 | { | |
3385 | struct file_id_both_directory_info *fibdinfo; | |
3386 | ||
3387 | fibdinfo = (struct file_id_both_directory_info *)d_info->rptr; | |
3388 | d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset); | |
3389 | d_info->name = fibdinfo->FileName; | |
3390 | d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength); | |
3391 | return 0; | |
3392 | } | |
3393 | case SMB_FIND_FILE_POSIX_INFO: | |
3394 | { | |
3395 | struct smb2_posix_info *posix_info; | |
3396 | ||
3397 | posix_info = (struct smb2_posix_info *)d_info->rptr; | |
3398 | d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset); | |
3399 | d_info->name = posix_info->name; | |
3400 | d_info->name_len = le32_to_cpu(posix_info->name_len); | |
3401 | return 0; | |
3402 | } | |
3403 | default: | |
3404 | return -EINVAL; | |
3405 | } | |
3406 | } | |
3407 | ||
3408 | /** | |
3409 | * smb2_populate_readdir_entry() - encode directory entry in smb2 response | |
3410 | * buffer | |
3411 | * @conn: connection instance | |
3412 | * @info_level: smb information level | |
3413 | * @d_info: structure included variables for query dir | |
3414 | * @ksmbd_kstat: ksmbd wrapper of dirent stat information | |
3415 | * | |
3416 | * if directory has many entries, find first can't read it fully. | |
3417 | * find next might be called multiple times to read remaining dir entries | |
3418 | * | |
3419 | * Return: 0 on success, otherwise error | |
3420 | */ | |
64b39f4a | 3421 | static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level, |
070fb21e NJ |
3422 | struct ksmbd_dir_info *d_info, |
3423 | struct ksmbd_kstat *ksmbd_kstat) | |
e2f34481 NJ |
3424 | { |
3425 | int next_entry_offset = 0; | |
3426 | char *conv_name; | |
3427 | int conv_len; | |
3428 | void *kstat; | |
dac0ec6e | 3429 | int struct_sz, rc = 0; |
e2f34481 NJ |
3430 | |
3431 | conv_name = ksmbd_convert_dir_info_name(d_info, | |
3432 | conn->local_nls, | |
3433 | &conv_len); | |
3434 | if (!conv_name) | |
3435 | return -ENOMEM; | |
3436 | ||
3437 | /* Somehow the name has only terminating NULL bytes */ | |
3438 | if (conv_len < 0) { | |
dac0ec6e NJ |
3439 | rc = -EINVAL; |
3440 | goto free_conv_name; | |
e2f34481 NJ |
3441 | } |
3442 | ||
d272e01f | 3443 | struct_sz = readdir_info_level_struct_sz(info_level) + conv_len; |
04e26094 NJ |
3444 | next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT); |
3445 | d_info->last_entry_off_align = next_entry_offset - struct_sz; | |
e2f34481 NJ |
3446 | |
3447 | if (next_entry_offset > d_info->out_buf_len) { | |
3448 | d_info->out_buf_len = 0; | |
dac0ec6e NJ |
3449 | rc = -ENOSPC; |
3450 | goto free_conv_name; | |
e2f34481 NJ |
3451 | } |
3452 | ||
3453 | kstat = d_info->wptr; | |
3454 | if (info_level != FILE_NAMES_INFORMATION) | |
3455 | kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat); | |
3456 | ||
3457 | switch (info_level) { | |
3458 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3459 | { | |
3460 | struct file_full_directory_info *ffdinfo; | |
3461 | ||
3462 | ffdinfo = (struct file_full_directory_info *)kstat; | |
3463 | ffdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3464 | ffdinfo->EaSize = | |
3465 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3466 | if (ffdinfo->EaSize) | |
26a2787d | 3467 | ffdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 | 3468 | if (d_info->hide_dot_file && d_info->name[0] == '.') |
26a2787d | 3469 | ffdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3470 | memcpy(ffdinfo->FileName, conv_name, conv_len); |
3471 | ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3472 | break; | |
3473 | } | |
3474 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3475 | { | |
3476 | struct file_both_directory_info *fbdinfo; | |
3477 | ||
3478 | fbdinfo = (struct file_both_directory_info *)kstat; | |
3479 | fbdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3480 | fbdinfo->EaSize = | |
3481 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3482 | if (fbdinfo->EaSize) | |
26a2787d | 3483 | fbdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 NJ |
3484 | fbdinfo->ShortNameLength = 0; |
3485 | fbdinfo->Reserved = 0; | |
3486 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3487 | fbdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3488 | memcpy(fbdinfo->FileName, conv_name, conv_len); |
3489 | fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3490 | break; | |
3491 | } | |
3492 | case FILE_DIRECTORY_INFORMATION: | |
3493 | { | |
3494 | struct file_directory_info *fdinfo; | |
3495 | ||
3496 | fdinfo = (struct file_directory_info *)kstat; | |
3497 | fdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3498 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3499 | fdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3500 | memcpy(fdinfo->FileName, conv_name, conv_len); |
3501 | fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3502 | break; | |
3503 | } | |
3504 | case FILE_NAMES_INFORMATION: | |
3505 | { | |
3506 | struct file_names_info *fninfo; | |
3507 | ||
3508 | fninfo = (struct file_names_info *)kstat; | |
3509 | fninfo->FileNameLength = cpu_to_le32(conv_len); | |
3510 | memcpy(fninfo->FileName, conv_name, conv_len); | |
3511 | fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3512 | break; | |
3513 | } | |
3514 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3515 | { | |
3516 | struct file_id_full_dir_info *dinfo; | |
3517 | ||
3518 | dinfo = (struct file_id_full_dir_info *)kstat; | |
3519 | dinfo->FileNameLength = cpu_to_le32(conv_len); | |
3520 | dinfo->EaSize = | |
3521 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3522 | if (dinfo->EaSize) | |
26a2787d | 3523 | dinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 NJ |
3524 | dinfo->Reserved = 0; |
3525 | dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); | |
3526 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3527 | dinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3528 | memcpy(dinfo->FileName, conv_name, conv_len); |
3529 | dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3530 | break; | |
3531 | } | |
3532 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3533 | { | |
3534 | struct file_id_both_directory_info *fibdinfo; | |
3535 | ||
3536 | fibdinfo = (struct file_id_both_directory_info *)kstat; | |
3537 | fibdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3538 | fibdinfo->EaSize = | |
3539 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3540 | if (fibdinfo->EaSize) | |
26a2787d | 3541 | fibdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 NJ |
3542 | fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); |
3543 | fibdinfo->ShortNameLength = 0; | |
3544 | fibdinfo->Reserved = 0; | |
3545 | fibdinfo->Reserved2 = cpu_to_le16(0); | |
3546 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3547 | fibdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3548 | memcpy(fibdinfo->FileName, conv_name, conv_len); |
3549 | fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3550 | break; | |
3551 | } | |
3552 | case SMB_FIND_FILE_POSIX_INFO: | |
3553 | { | |
3554 | struct smb2_posix_info *posix_info; | |
3555 | u64 time; | |
3556 | ||
3557 | posix_info = (struct smb2_posix_info *)kstat; | |
3558 | posix_info->Ignored = 0; | |
3559 | posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time); | |
3560 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime); | |
3561 | posix_info->ChangeTime = cpu_to_le64(time); | |
3562 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime); | |
3563 | posix_info->LastAccessTime = cpu_to_le64(time); | |
3564 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime); | |
3565 | posix_info->LastWriteTime = cpu_to_le64(time); | |
3566 | posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size); | |
3567 | posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9); | |
3568 | posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev); | |
3569 | posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink); | |
f6c2b201 | 3570 | posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode & 0777); |
e2f34481 NJ |
3571 | posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino); |
3572 | posix_info->DosAttributes = | |
26a2787d RS |
3573 | S_ISDIR(ksmbd_kstat->kstat->mode) ? |
3574 | FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE; | |
e2f34481 | 3575 | if (d_info->hide_dot_file && d_info->name[0] == '.') |
26a2787d | 3576 | posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
5609bdd9 NJ |
3577 | /* |
3578 | * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)). | |
3579 | * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) + | |
3580 | * sub_auth(4 * 1(num_subauth)) + RID(4). | |
3581 | */ | |
475d6f98 | 3582 | id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid), |
5609bdd9 | 3583 | SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]); |
475d6f98 | 3584 | id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid), |
5609bdd9 | 3585 | SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]); |
e2f34481 NJ |
3586 | memcpy(posix_info->name, conv_name, conv_len); |
3587 | posix_info->name_len = cpu_to_le32(conv_len); | |
3588 | posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3589 | break; | |
3590 | } | |
3591 | ||
3592 | } /* switch (info_level) */ | |
3593 | ||
3594 | d_info->last_entry_offset = d_info->data_count; | |
3595 | d_info->data_count += next_entry_offset; | |
e7735c85 | 3596 | d_info->out_buf_len -= next_entry_offset; |
e2f34481 | 3597 | d_info->wptr += next_entry_offset; |
e2f34481 NJ |
3598 | |
3599 | ksmbd_debug(SMB, | |
070fb21e NJ |
3600 | "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n", |
3601 | info_level, d_info->out_buf_len, | |
3602 | next_entry_offset, d_info->data_count); | |
e2f34481 | 3603 | |
dac0ec6e NJ |
3604 | free_conv_name: |
3605 | kfree(conv_name); | |
3606 | return rc; | |
e2f34481 NJ |
3607 | } |
3608 | ||
3609 | struct smb2_query_dir_private { | |
3610 | struct ksmbd_work *work; | |
3611 | char *search_pattern; | |
3612 | struct ksmbd_file *dir_fp; | |
3613 | ||
3614 | struct ksmbd_dir_info *d_info; | |
3615 | int info_level; | |
3616 | }; | |
3617 | ||
3618 | static void lock_dir(struct ksmbd_file *dir_fp) | |
3619 | { | |
3620 | struct dentry *dir = dir_fp->filp->f_path.dentry; | |
3621 | ||
3622 | inode_lock_nested(d_inode(dir), I_MUTEX_PARENT); | |
3623 | } | |
3624 | ||
3625 | static void unlock_dir(struct ksmbd_file *dir_fp) | |
3626 | { | |
3627 | struct dentry *dir = dir_fp->filp->f_path.dentry; | |
3628 | ||
3629 | inode_unlock(d_inode(dir)); | |
3630 | } | |
3631 | ||
3632 | static int process_query_dir_entries(struct smb2_query_dir_private *priv) | |
3633 | { | |
b74d24f7 | 3634 | struct mnt_idmap *idmap = file_mnt_idmap(priv->dir_fp->filp); |
e2f34481 NJ |
3635 | struct kstat kstat; |
3636 | struct ksmbd_kstat ksmbd_kstat; | |
3637 | int rc; | |
3638 | int i; | |
3639 | ||
3640 | for (i = 0; i < priv->d_info->num_entry; i++) { | |
3641 | struct dentry *dent; | |
3642 | ||
3643 | if (dentry_name(priv->d_info, priv->info_level)) | |
3644 | return -EINVAL; | |
3645 | ||
3646 | lock_dir(priv->dir_fp); | |
4609e1f1 | 3647 | dent = lookup_one(idmap, priv->d_info->name, |
da1e7ada CB |
3648 | priv->dir_fp->filp->f_path.dentry, |
3649 | priv->d_info->name_len); | |
e2f34481 NJ |
3650 | unlock_dir(priv->dir_fp); |
3651 | ||
3652 | if (IS_ERR(dent)) { | |
3653 | ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n", | |
070fb21e NJ |
3654 | priv->d_info->name, |
3655 | PTR_ERR(dent)); | |
e2f34481 NJ |
3656 | continue; |
3657 | } | |
3658 | if (unlikely(d_is_negative(dent))) { | |
3659 | dput(dent); | |
3660 | ksmbd_debug(SMB, "Negative dentry `%s'\n", | |
3661 | priv->d_info->name); | |
3662 | continue; | |
3663 | } | |
3664 | ||
3665 | ksmbd_kstat.kstat = &kstat; | |
3666 | if (priv->info_level != FILE_NAMES_INFORMATION) | |
3667 | ksmbd_vfs_fill_dentry_attrs(priv->work, | |
b74d24f7 | 3668 | idmap, |
e2f34481 NJ |
3669 | dent, |
3670 | &ksmbd_kstat); | |
3671 | ||
3672 | rc = smb2_populate_readdir_entry(priv->work->conn, | |
3673 | priv->info_level, | |
3674 | priv->d_info, | |
3675 | &ksmbd_kstat); | |
3676 | dput(dent); | |
3677 | if (rc) | |
3678 | return rc; | |
3679 | } | |
3680 | return 0; | |
3681 | } | |
3682 | ||
3683 | static int reserve_populate_dentry(struct ksmbd_dir_info *d_info, | |
070fb21e | 3684 | int info_level) |
e2f34481 NJ |
3685 | { |
3686 | int struct_sz; | |
3687 | int conv_len; | |
3688 | int next_entry_offset; | |
3689 | ||
3690 | struct_sz = readdir_info_level_struct_sz(info_level); | |
3691 | if (struct_sz == -EOPNOTSUPP) | |
3692 | return -EOPNOTSUPP; | |
3693 | ||
3694 | conv_len = (d_info->name_len + 1) * 2; | |
d272e01f | 3695 | next_entry_offset = ALIGN(struct_sz + conv_len, |
e2f34481 NJ |
3696 | KSMBD_DIR_INFO_ALIGNMENT); |
3697 | ||
3698 | if (next_entry_offset > d_info->out_buf_len) { | |
3699 | d_info->out_buf_len = 0; | |
3700 | return -ENOSPC; | |
3701 | } | |
3702 | ||
3703 | switch (info_level) { | |
3704 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3705 | { | |
3706 | struct file_full_directory_info *ffdinfo; | |
3707 | ||
3708 | ffdinfo = (struct file_full_directory_info *)d_info->wptr; | |
3709 | memcpy(ffdinfo->FileName, d_info->name, d_info->name_len); | |
3710 | ffdinfo->FileName[d_info->name_len] = 0x00; | |
3711 | ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3712 | ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3713 | break; | |
3714 | } | |
3715 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3716 | { | |
3717 | struct file_both_directory_info *fbdinfo; | |
3718 | ||
3719 | fbdinfo = (struct file_both_directory_info *)d_info->wptr; | |
3720 | memcpy(fbdinfo->FileName, d_info->name, d_info->name_len); | |
3721 | fbdinfo->FileName[d_info->name_len] = 0x00; | |
3722 | fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3723 | fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3724 | break; | |
3725 | } | |
3726 | case FILE_DIRECTORY_INFORMATION: | |
3727 | { | |
3728 | struct file_directory_info *fdinfo; | |
3729 | ||
3730 | fdinfo = (struct file_directory_info *)d_info->wptr; | |
3731 | memcpy(fdinfo->FileName, d_info->name, d_info->name_len); | |
3732 | fdinfo->FileName[d_info->name_len] = 0x00; | |
3733 | fdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3734 | fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3735 | break; | |
3736 | } | |
3737 | case FILE_NAMES_INFORMATION: | |
3738 | { | |
3739 | struct file_names_info *fninfo; | |
3740 | ||
3741 | fninfo = (struct file_names_info *)d_info->wptr; | |
3742 | memcpy(fninfo->FileName, d_info->name, d_info->name_len); | |
3743 | fninfo->FileName[d_info->name_len] = 0x00; | |
3744 | fninfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3745 | fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3746 | break; | |
3747 | } | |
3748 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3749 | { | |
3750 | struct file_id_full_dir_info *dinfo; | |
3751 | ||
3752 | dinfo = (struct file_id_full_dir_info *)d_info->wptr; | |
3753 | memcpy(dinfo->FileName, d_info->name, d_info->name_len); | |
3754 | dinfo->FileName[d_info->name_len] = 0x00; | |
3755 | dinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3756 | dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3757 | break; | |
3758 | } | |
3759 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3760 | { | |
3761 | struct file_id_both_directory_info *fibdinfo; | |
3762 | ||
3763 | fibdinfo = (struct file_id_both_directory_info *)d_info->wptr; | |
3764 | memcpy(fibdinfo->FileName, d_info->name, d_info->name_len); | |
3765 | fibdinfo->FileName[d_info->name_len] = 0x00; | |
3766 | fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3767 | fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3768 | break; | |
3769 | } | |
3770 | case SMB_FIND_FILE_POSIX_INFO: | |
3771 | { | |
3772 | struct smb2_posix_info *posix_info; | |
3773 | ||
3774 | posix_info = (struct smb2_posix_info *)d_info->wptr; | |
3775 | memcpy(posix_info->name, d_info->name, d_info->name_len); | |
3776 | posix_info->name[d_info->name_len] = 0x00; | |
3777 | posix_info->name_len = cpu_to_le32(d_info->name_len); | |
3778 | posix_info->NextEntryOffset = | |
3779 | cpu_to_le32(next_entry_offset); | |
3780 | break; | |
3781 | } | |
3782 | } /* switch (info_level) */ | |
3783 | ||
3784 | d_info->num_entry++; | |
3785 | d_info->out_buf_len -= next_entry_offset; | |
3786 | d_info->wptr += next_entry_offset; | |
3787 | return 0; | |
3788 | } | |
3789 | ||
25885a35 | 3790 | static bool __query_dir(struct dir_context *ctx, const char *name, int namlen, |
070fb21e | 3791 | loff_t offset, u64 ino, unsigned int d_type) |
e2f34481 NJ |
3792 | { |
3793 | struct ksmbd_readdir_data *buf; | |
3794 | struct smb2_query_dir_private *priv; | |
3795 | struct ksmbd_dir_info *d_info; | |
3796 | int rc; | |
3797 | ||
3798 | buf = container_of(ctx, struct ksmbd_readdir_data, ctx); | |
3799 | priv = buf->private; | |
3800 | d_info = priv->d_info; | |
3801 | ||
3802 | /* dot and dotdot entries are already reserved */ | |
3803 | if (!strcmp(".", name) || !strcmp("..", name)) | |
25885a35 | 3804 | return true; |
e2f34481 | 3805 | if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name)) |
25885a35 | 3806 | return true; |
b24c9335 | 3807 | if (!match_pattern(name, namlen, priv->search_pattern)) |
25885a35 | 3808 | return true; |
e2f34481 NJ |
3809 | |
3810 | d_info->name = name; | |
3811 | d_info->name_len = namlen; | |
3812 | rc = reserve_populate_dentry(d_info, priv->info_level); | |
3813 | if (rc) | |
25885a35 AV |
3814 | return false; |
3815 | if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) | |
e2f34481 | 3816 | d_info->out_buf_len = 0; |
25885a35 | 3817 | return true; |
e2f34481 NJ |
3818 | } |
3819 | ||
e2f34481 NJ |
3820 | static int verify_info_level(int info_level) |
3821 | { | |
3822 | switch (info_level) { | |
3823 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3824 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3825 | case FILE_DIRECTORY_INFORMATION: | |
3826 | case FILE_NAMES_INFORMATION: | |
3827 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3828 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3829 | case SMB_FIND_FILE_POSIX_INFO: | |
3830 | break; | |
3831 | default: | |
3832 | return -EOPNOTSUPP; | |
3833 | } | |
3834 | ||
3835 | return 0; | |
3836 | } | |
3837 | ||
8f054118 NJ |
3838 | static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len) |
3839 | { | |
3840 | int free_len; | |
3841 | ||
3842 | free_len = (int)(work->response_sz - | |
3843 | (get_rfc1002_len(work->response_buf) + 4)) - hdr2_len; | |
3844 | return free_len; | |
3845 | } | |
3846 | ||
34061d6b HL |
3847 | static int smb2_calc_max_out_buf_len(struct ksmbd_work *work, |
3848 | unsigned short hdr2_len, | |
3849 | unsigned int out_buf_len) | |
3850 | { | |
3851 | int free_len; | |
3852 | ||
3853 | if (out_buf_len > work->conn->vals->max_trans_size) | |
3854 | return -EINVAL; | |
3855 | ||
8f054118 | 3856 | free_len = smb2_resp_buf_len(work, hdr2_len); |
34061d6b HL |
3857 | if (free_len < 0) |
3858 | return -EINVAL; | |
3859 | ||
3860 | return min_t(int, out_buf_len, free_len); | |
3861 | } | |
3862 | ||
e2f34481 NJ |
3863 | int smb2_query_dir(struct ksmbd_work *work) |
3864 | { | |
3865 | struct ksmbd_conn *conn = work->conn; | |
3866 | struct smb2_query_directory_req *req; | |
cb451720 | 3867 | struct smb2_query_directory_rsp *rsp; |
e2f34481 NJ |
3868 | struct ksmbd_share_config *share = work->tcon->share_conf; |
3869 | struct ksmbd_file *dir_fp = NULL; | |
3870 | struct ksmbd_dir_info d_info; | |
3871 | int rc = 0; | |
3872 | char *srch_ptr = NULL; | |
3873 | unsigned char srch_flag; | |
3874 | int buffer_sz; | |
3875 | struct smb2_query_dir_private query_dir_private = {NULL, }; | |
3876 | ||
e2f34481 NJ |
3877 | WORK_BUFFERS(work, req, rsp); |
3878 | ||
3879 | if (ksmbd_override_fsids(work)) { | |
3880 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
3881 | smb2_set_err_rsp(work); | |
3882 | return -ENOMEM; | |
3883 | } | |
3884 | ||
3885 | rc = verify_info_level(req->FileInformationClass); | |
3886 | if (rc) { | |
3887 | rc = -EFAULT; | |
3888 | goto err_out2; | |
3889 | } | |
3890 | ||
2d004c6c | 3891 | dir_fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 NJ |
3892 | if (!dir_fp) { |
3893 | rc = -EBADF; | |
3894 | goto err_out2; | |
3895 | } | |
3896 | ||
3897 | if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) || | |
4609e1f1 | 3898 | inode_permission(file_mnt_idmap(dir_fp->filp), |
af34983e | 3899 | file_inode(dir_fp->filp), |
070fb21e | 3900 | MAY_READ | MAY_EXEC)) { |
369c1634 | 3901 | pr_err("no right to enumerate directory (%pD)\n", dir_fp->filp); |
e2f34481 NJ |
3902 | rc = -EACCES; |
3903 | goto err_out2; | |
3904 | } | |
3905 | ||
3906 | if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) { | |
bde1694a | 3907 | pr_err("can't do query dir for a file\n"); |
e2f34481 NJ |
3908 | rc = -EINVAL; |
3909 | goto err_out2; | |
3910 | } | |
3911 | ||
3912 | srch_flag = req->Flags; | |
3913 | srch_ptr = smb_strndup_from_utf16(req->Buffer, | |
070fb21e NJ |
3914 | le16_to_cpu(req->FileNameLength), 1, |
3915 | conn->local_nls); | |
e2f34481 NJ |
3916 | if (IS_ERR(srch_ptr)) { |
3917 | ksmbd_debug(SMB, "Search Pattern not found\n"); | |
3918 | rc = -EINVAL; | |
3919 | goto err_out2; | |
64b39f4a | 3920 | } else { |
e2f34481 | 3921 | ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr); |
64b39f4a | 3922 | } |
e2f34481 | 3923 | |
e2f34481 NJ |
3924 | if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) { |
3925 | ksmbd_debug(SMB, "Restart directory scan\n"); | |
3926 | generic_file_llseek(dir_fp->filp, 0, SEEK_SET); | |
e2f34481 NJ |
3927 | } |
3928 | ||
3929 | memset(&d_info, 0, sizeof(struct ksmbd_dir_info)); | |
3930 | d_info.wptr = (char *)rsp->Buffer; | |
3931 | d_info.rptr = (char *)rsp->Buffer; | |
34061d6b HL |
3932 | d_info.out_buf_len = |
3933 | smb2_calc_max_out_buf_len(work, 8, | |
3934 | le32_to_cpu(req->OutputBufferLength)); | |
3935 | if (d_info.out_buf_len < 0) { | |
3936 | rc = -EINVAL; | |
3937 | goto err_out; | |
3938 | } | |
e2f34481 NJ |
3939 | d_info.flags = srch_flag; |
3940 | ||
3941 | /* | |
3942 | * reserve dot and dotdot entries in head of buffer | |
3943 | * in first response | |
3944 | */ | |
3945 | rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass, | |
070fb21e NJ |
3946 | dir_fp, &d_info, srch_ptr, |
3947 | smb2_populate_readdir_entry); | |
e2f34481 NJ |
3948 | if (rc == -ENOSPC) |
3949 | rc = 0; | |
3950 | else if (rc) | |
3951 | goto err_out; | |
3952 | ||
3953 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES)) | |
3954 | d_info.hide_dot_file = true; | |
3955 | ||
3956 | buffer_sz = d_info.out_buf_len; | |
3957 | d_info.rptr = d_info.wptr; | |
3958 | query_dir_private.work = work; | |
3959 | query_dir_private.search_pattern = srch_ptr; | |
3960 | query_dir_private.dir_fp = dir_fp; | |
3961 | query_dir_private.d_info = &d_info; | |
3962 | query_dir_private.info_level = req->FileInformationClass; | |
3963 | dir_fp->readdir_data.private = &query_dir_private; | |
3964 | set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir); | |
3965 | ||
e8c06191 | 3966 | rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx); |
65ca7a3f NJ |
3967 | /* |
3968 | * req->OutputBufferLength is too small to contain even one entry. | |
3969 | * In this case, it immediately returns OutputBufferLength 0 to client. | |
3970 | */ | |
3971 | if (!d_info.out_buf_len && !d_info.num_entry) | |
3972 | goto no_buf_len; | |
88541cb4 | 3973 | if (rc > 0 || rc == -ENOSPC) |
e2f34481 | 3974 | rc = 0; |
88541cb4 | 3975 | else if (rc) |
e2f34481 NJ |
3976 | goto err_out; |
3977 | ||
3978 | d_info.wptr = d_info.rptr; | |
3979 | d_info.out_buf_len = buffer_sz; | |
3980 | rc = process_query_dir_entries(&query_dir_private); | |
3981 | if (rc) | |
3982 | goto err_out; | |
3983 | ||
3984 | if (!d_info.data_count && d_info.out_buf_len >= 0) { | |
64b39f4a | 3985 | if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) { |
e2f34481 | 3986 | rsp->hdr.Status = STATUS_NO_SUCH_FILE; |
64b39f4a | 3987 | } else { |
e2f34481 NJ |
3988 | dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0; |
3989 | rsp->hdr.Status = STATUS_NO_MORE_FILES; | |
3990 | } | |
3991 | rsp->StructureSize = cpu_to_le16(9); | |
3992 | rsp->OutputBufferOffset = cpu_to_le16(0); | |
3993 | rsp->OutputBufferLength = cpu_to_le32(0); | |
3994 | rsp->Buffer[0] = 0; | |
cb451720 | 3995 | inc_rfc1001_len(work->response_buf, 9); |
e2f34481 | 3996 | } else { |
65ca7a3f | 3997 | no_buf_len: |
e2f34481 NJ |
3998 | ((struct file_directory_info *) |
3999 | ((char *)rsp->Buffer + d_info.last_entry_offset)) | |
4000 | ->NextEntryOffset = 0; | |
65ca7a3f NJ |
4001 | if (d_info.data_count >= d_info.last_entry_off_align) |
4002 | d_info.data_count -= d_info.last_entry_off_align; | |
e2f34481 NJ |
4003 | |
4004 | rsp->StructureSize = cpu_to_le16(9); | |
4005 | rsp->OutputBufferOffset = cpu_to_le16(72); | |
4006 | rsp->OutputBufferLength = cpu_to_le32(d_info.data_count); | |
cb451720 | 4007 | inc_rfc1001_len(work->response_buf, 8 + d_info.data_count); |
e2f34481 NJ |
4008 | } |
4009 | ||
4010 | kfree(srch_ptr); | |
4011 | ksmbd_fd_put(work, dir_fp); | |
4012 | ksmbd_revert_fsids(work); | |
4013 | return 0; | |
4014 | ||
4015 | err_out: | |
bde1694a | 4016 | pr_err("error while processing smb2 query dir rc = %d\n", rc); |
e2f34481 NJ |
4017 | kfree(srch_ptr); |
4018 | ||
4019 | err_out2: | |
4020 | if (rc == -EINVAL) | |
4021 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
4022 | else if (rc == -EACCES) | |
4023 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
4024 | else if (rc == -ENOENT) | |
4025 | rsp->hdr.Status = STATUS_NO_SUCH_FILE; | |
4026 | else if (rc == -EBADF) | |
4027 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
4028 | else if (rc == -ENOMEM) | |
4029 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
4030 | else if (rc == -EFAULT) | |
4031 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
88541cb4 NJ |
4032 | else if (rc == -EIO) |
4033 | rsp->hdr.Status = STATUS_FILE_CORRUPT_ERROR; | |
e2f34481 NJ |
4034 | if (!rsp->hdr.Status) |
4035 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
4036 | ||
4037 | smb2_set_err_rsp(work); | |
4038 | ksmbd_fd_put(work, dir_fp); | |
4039 | ksmbd_revert_fsids(work); | |
4040 | return 0; | |
4041 | } | |
4042 | ||
4043 | /** | |
4044 | * buffer_check_err() - helper function to check buffer errors | |
4045 | * @reqOutputBufferLength: max buffer length expected in command response | |
4046 | * @rsp: query info response buffer contains output buffer length | |
e230d013 | 4047 | * @rsp_org: base response buffer pointer in case of chained response |
e2f34481 NJ |
4048 | * @infoclass_size: query info class response buffer size |
4049 | * | |
4050 | * Return: 0 on success, otherwise error | |
4051 | */ | |
4052 | static int buffer_check_err(int reqOutputBufferLength, | |
cb451720 NJ |
4053 | struct smb2_query_info_rsp *rsp, |
4054 | void *rsp_org, int infoclass_size) | |
e2f34481 NJ |
4055 | { |
4056 | if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) { | |
4057 | if (reqOutputBufferLength < infoclass_size) { | |
bde1694a | 4058 | pr_err("Invalid Buffer Size Requested\n"); |
e2f34481 | 4059 | rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH; |
cb451720 | 4060 | *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr)); |
e2f34481 NJ |
4061 | return -EINVAL; |
4062 | } | |
4063 | ||
4064 | ksmbd_debug(SMB, "Buffer Overflow\n"); | |
4065 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
cb451720 | 4066 | *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) + |
64b39f4a NJ |
4067 | reqOutputBufferLength); |
4068 | rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength); | |
e2f34481 NJ |
4069 | } |
4070 | return 0; | |
4071 | } | |
4072 | ||
cb451720 NJ |
4073 | static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp, |
4074 | void *rsp_org) | |
e2f34481 NJ |
4075 | { |
4076 | struct smb2_file_standard_info *sinfo; | |
4077 | ||
4078 | sinfo = (struct smb2_file_standard_info *)rsp->Buffer; | |
4079 | ||
4080 | sinfo->AllocationSize = cpu_to_le64(4096); | |
4081 | sinfo->EndOfFile = cpu_to_le64(0); | |
4082 | sinfo->NumberOfLinks = cpu_to_le32(1); | |
4083 | sinfo->DeletePending = 1; | |
4084 | sinfo->Directory = 0; | |
4085 | rsp->OutputBufferLength = | |
4086 | cpu_to_le32(sizeof(struct smb2_file_standard_info)); | |
cb451720 | 4087 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info)); |
e2f34481 NJ |
4088 | } |
4089 | ||
cb451720 NJ |
4090 | static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num, |
4091 | void *rsp_org) | |
e2f34481 NJ |
4092 | { |
4093 | struct smb2_file_internal_info *file_info; | |
4094 | ||
4095 | file_info = (struct smb2_file_internal_info *)rsp->Buffer; | |
4096 | ||
4097 | /* any unique number */ | |
4098 | file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63)); | |
4099 | rsp->OutputBufferLength = | |
4100 | cpu_to_le32(sizeof(struct smb2_file_internal_info)); | |
cb451720 | 4101 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); |
e2f34481 NJ |
4102 | } |
4103 | ||
e2f34481 | 4104 | static int smb2_get_info_file_pipe(struct ksmbd_session *sess, |
070fb21e | 4105 | struct smb2_query_info_req *req, |
cb451720 NJ |
4106 | struct smb2_query_info_rsp *rsp, |
4107 | void *rsp_org) | |
e2f34481 | 4108 | { |
64b39f4a | 4109 | u64 id; |
e2f34481 NJ |
4110 | int rc; |
4111 | ||
4112 | /* | |
4113 | * Windows can sometime send query file info request on | |
4114 | * pipe without opening it, checking error condition here | |
4115 | */ | |
2d004c6c | 4116 | id = req->VolatileFileId; |
e2f34481 NJ |
4117 | if (!ksmbd_session_rpc_method(sess, id)) |
4118 | return -ENOENT; | |
4119 | ||
4120 | ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n", | |
2d004c6c | 4121 | req->FileInfoClass, req->VolatileFileId); |
e2f34481 NJ |
4122 | |
4123 | switch (req->FileInfoClass) { | |
4124 | case FILE_STANDARD_INFORMATION: | |
cb451720 | 4125 | get_standard_info_pipe(rsp, rsp_org); |
e2f34481 | 4126 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
cb451720 NJ |
4127 | rsp, rsp_org, |
4128 | FILE_STANDARD_INFORMATION_SIZE); | |
e2f34481 NJ |
4129 | break; |
4130 | case FILE_INTERNAL_INFORMATION: | |
cb451720 | 4131 | get_internal_info_pipe(rsp, id, rsp_org); |
e2f34481 | 4132 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
cb451720 NJ |
4133 | rsp, rsp_org, |
4134 | FILE_INTERNAL_INFORMATION_SIZE); | |
e2f34481 NJ |
4135 | break; |
4136 | default: | |
4137 | ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n", | |
070fb21e | 4138 | req->FileInfoClass); |
e2f34481 NJ |
4139 | rc = -EOPNOTSUPP; |
4140 | } | |
4141 | return rc; | |
4142 | } | |
4143 | ||
4144 | /** | |
4145 | * smb2_get_ea() - handler for smb2 get extended attribute command | |
4146 | * @work: smb work containing query info command buffer | |
95fa1ce9 HL |
4147 | * @fp: ksmbd_file pointer |
4148 | * @req: get extended attribute request | |
4149 | * @rsp: response buffer pointer | |
4150 | * @rsp_org: base response buffer pointer in case of chained response | |
e2f34481 NJ |
4151 | * |
4152 | * Return: 0 on success, otherwise error | |
4153 | */ | |
64b39f4a | 4154 | static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp, |
070fb21e NJ |
4155 | struct smb2_query_info_req *req, |
4156 | struct smb2_query_info_rsp *rsp, void *rsp_org) | |
e2f34481 NJ |
4157 | { |
4158 | struct smb2_ea_info *eainfo, *prev_eainfo; | |
4159 | char *name, *ptr, *xattr_list = NULL, *buf; | |
4160 | int rc, name_len, value_len, xattr_list_len, idx; | |
4161 | ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0; | |
4162 | struct smb2_ea_info_req *ea_req = NULL; | |
c22180a5 | 4163 | const struct path *path; |
4609e1f1 | 4164 | struct mnt_idmap *idmap = file_mnt_idmap(fp->filp); |
e2f34481 NJ |
4165 | |
4166 | if (!(fp->daccess & FILE_READ_EA_LE)) { | |
bde1694a NJ |
4167 | pr_err("Not permitted to read ext attr : 0x%x\n", |
4168 | fp->daccess); | |
e2f34481 NJ |
4169 | return -EACCES; |
4170 | } | |
4171 | ||
4172 | path = &fp->filp->f_path; | |
4173 | /* single EA entry is requested with given user.* name */ | |
64b39f4a | 4174 | if (req->InputBufferLength) { |
6d56262c NJ |
4175 | if (le32_to_cpu(req->InputBufferLength) < |
4176 | sizeof(struct smb2_ea_info_req)) | |
4177 | return -EINVAL; | |
4178 | ||
e2f34481 | 4179 | ea_req = (struct smb2_ea_info_req *)req->Buffer; |
64b39f4a | 4180 | } else { |
e2f34481 NJ |
4181 | /* need to send all EAs, if no specific EA is requested*/ |
4182 | if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY) | |
4183 | ksmbd_debug(SMB, | |
070fb21e NJ |
4184 | "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n", |
4185 | le32_to_cpu(req->Flags)); | |
e2f34481 NJ |
4186 | } |
4187 | ||
34061d6b HL |
4188 | buf_free_len = |
4189 | smb2_calc_max_out_buf_len(work, 8, | |
4190 | le32_to_cpu(req->OutputBufferLength)); | |
4191 | if (buf_free_len < 0) | |
4192 | return -EINVAL; | |
e2f34481 NJ |
4193 | |
4194 | rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list); | |
4195 | if (rc < 0) { | |
4196 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
4197 | goto out; | |
4198 | } else if (!rc) { /* there is no EA in the file */ | |
4199 | ksmbd_debug(SMB, "no ea data in the file\n"); | |
4200 | goto done; | |
4201 | } | |
4202 | xattr_list_len = rc; | |
4203 | ||
4204 | ptr = (char *)rsp->Buffer; | |
4205 | eainfo = (struct smb2_ea_info *)ptr; | |
4206 | prev_eainfo = eainfo; | |
4207 | idx = 0; | |
4208 | ||
4209 | while (idx < xattr_list_len) { | |
4210 | name = xattr_list + idx; | |
4211 | name_len = strlen(name); | |
4212 | ||
4213 | ksmbd_debug(SMB, "%s, len %d\n", name, name_len); | |
4214 | idx += name_len + 1; | |
4215 | ||
4216 | /* | |
4217 | * CIFS does not support EA other than user.* namespace, | |
4218 | * still keep the framework generic, to list other attrs | |
4219 | * in future. | |
4220 | */ | |
4221 | if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) | |
4222 | continue; | |
4223 | ||
4224 | if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, | |
64b39f4a | 4225 | STREAM_PREFIX_LEN)) |
e2f34481 NJ |
4226 | continue; |
4227 | ||
4228 | if (req->InputBufferLength && | |
64b39f4a NJ |
4229 | strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name, |
4230 | ea_req->EaNameLength)) | |
e2f34481 NJ |
4231 | continue; |
4232 | ||
4233 | if (!strncmp(&name[XATTR_USER_PREFIX_LEN], | |
64b39f4a | 4234 | DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN)) |
e2f34481 NJ |
4235 | continue; |
4236 | ||
4237 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) | |
4238 | name_len -= XATTR_USER_PREFIX_LEN; | |
4239 | ||
4240 | ptr = (char *)(&eainfo->name + name_len + 1); | |
4241 | buf_free_len -= (offsetof(struct smb2_ea_info, name) + | |
4242 | name_len + 1); | |
4243 | /* bailout if xattr can't fit in buf_free_len */ | |
4609e1f1 | 4244 | value_len = ksmbd_vfs_getxattr(idmap, path->dentry, |
465d7204 | 4245 | name, &buf); |
e2f34481 NJ |
4246 | if (value_len <= 0) { |
4247 | rc = -ENOENT; | |
4248 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
4249 | goto out; | |
4250 | } | |
4251 | ||
4252 | buf_free_len -= value_len; | |
4253 | if (buf_free_len < 0) { | |
79f6b11a | 4254 | kfree(buf); |
e2f34481 NJ |
4255 | break; |
4256 | } | |
4257 | ||
4258 | memcpy(ptr, buf, value_len); | |
79f6b11a | 4259 | kfree(buf); |
e2f34481 NJ |
4260 | |
4261 | ptr += value_len; | |
4262 | eainfo->Flags = 0; | |
4263 | eainfo->EaNameLength = name_len; | |
4264 | ||
64b39f4a | 4265 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) |
e2f34481 | 4266 | memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN], |
070fb21e | 4267 | name_len); |
e2f34481 NJ |
4268 | else |
4269 | memcpy(eainfo->name, name, name_len); | |
4270 | ||
4271 | eainfo->name[name_len] = '\0'; | |
4272 | eainfo->EaValueLength = cpu_to_le16(value_len); | |
4273 | next_offset = offsetof(struct smb2_ea_info, name) + | |
4274 | name_len + 1 + value_len; | |
4275 | ||
4276 | /* align next xattr entry at 4 byte bundary */ | |
4277 | alignment_bytes = ((next_offset + 3) & ~3) - next_offset; | |
4278 | if (alignment_bytes) { | |
4279 | memset(ptr, '\0', alignment_bytes); | |
4280 | ptr += alignment_bytes; | |
4281 | next_offset += alignment_bytes; | |
4282 | buf_free_len -= alignment_bytes; | |
4283 | } | |
4284 | eainfo->NextEntryOffset = cpu_to_le32(next_offset); | |
4285 | prev_eainfo = eainfo; | |
4286 | eainfo = (struct smb2_ea_info *)ptr; | |
4287 | rsp_data_cnt += next_offset; | |
4288 | ||
4289 | if (req->InputBufferLength) { | |
4290 | ksmbd_debug(SMB, "single entry requested\n"); | |
4291 | break; | |
4292 | } | |
4293 | } | |
4294 | ||
4295 | /* no more ea entries */ | |
4296 | prev_eainfo->NextEntryOffset = 0; | |
4297 | done: | |
4298 | rc = 0; | |
4299 | if (rsp_data_cnt == 0) | |
4300 | rsp->hdr.Status = STATUS_NO_EAS_ON_FILE; | |
4301 | rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt); | |
4302 | inc_rfc1001_len(rsp_org, rsp_data_cnt); | |
4303 | out: | |
79f6b11a | 4304 | kvfree(xattr_list); |
e2f34481 NJ |
4305 | return rc; |
4306 | } | |
4307 | ||
4308 | static void get_file_access_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4309 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4310 | { |
4311 | struct smb2_file_access_info *file_info; | |
4312 | ||
4313 | file_info = (struct smb2_file_access_info *)rsp->Buffer; | |
4314 | file_info->AccessFlags = fp->daccess; | |
4315 | rsp->OutputBufferLength = | |
4316 | cpu_to_le32(sizeof(struct smb2_file_access_info)); | |
4317 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info)); | |
4318 | } | |
4319 | ||
4320 | static int get_file_basic_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4321 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 | 4322 | { |
88d30052 | 4323 | struct smb2_file_basic_info *basic_info; |
e2f34481 NJ |
4324 | struct kstat stat; |
4325 | u64 time; | |
4326 | ||
4327 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4328 | pr_err("no right to read the attributes : 0x%x\n", |
4329 | fp->daccess); | |
e2f34481 NJ |
4330 | return -EACCES; |
4331 | } | |
4332 | ||
88d30052 | 4333 | basic_info = (struct smb2_file_basic_info *)rsp->Buffer; |
b74d24f7 | 4334 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4335 | &stat); |
e2f34481 NJ |
4336 | basic_info->CreationTime = cpu_to_le64(fp->create_time); |
4337 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4338 | basic_info->LastAccessTime = cpu_to_le64(time); | |
4339 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4340 | basic_info->LastWriteTime = cpu_to_le64(time); | |
4341 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4342 | basic_info->ChangeTime = cpu_to_le64(time); | |
4343 | basic_info->Attributes = fp->f_ci->m_fattr; | |
4344 | basic_info->Pad1 = 0; | |
4345 | rsp->OutputBufferLength = | |
88d30052 NJ |
4346 | cpu_to_le32(sizeof(struct smb2_file_basic_info)); |
4347 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info)); | |
e2f34481 NJ |
4348 | return 0; |
4349 | } | |
4350 | ||
4351 | static unsigned long long get_allocation_size(struct inode *inode, | |
070fb21e | 4352 | struct kstat *stat) |
e2f34481 NJ |
4353 | { |
4354 | unsigned long long alloc_size = 0; | |
4355 | ||
4356 | if (!S_ISDIR(stat->mode)) { | |
4357 | if ((inode->i_blocks << 9) <= stat->size) | |
4358 | alloc_size = stat->size; | |
4359 | else | |
4360 | alloc_size = inode->i_blocks << 9; | |
e2f34481 NJ |
4361 | } |
4362 | ||
4363 | return alloc_size; | |
4364 | } | |
4365 | ||
4366 | static void get_file_standard_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4367 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4368 | { |
4369 | struct smb2_file_standard_info *sinfo; | |
4370 | unsigned int delete_pending; | |
4371 | struct inode *inode; | |
4372 | struct kstat stat; | |
4373 | ||
ab0b263b | 4374 | inode = file_inode(fp->filp); |
b74d24f7 | 4375 | generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); |
e2f34481 NJ |
4376 | |
4377 | sinfo = (struct smb2_file_standard_info *)rsp->Buffer; | |
4378 | delete_pending = ksmbd_inode_pending_delete(fp); | |
4379 | ||
4380 | sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat)); | |
4381 | sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4382 | sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending); | |
4383 | sinfo->DeletePending = delete_pending; | |
4384 | sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0; | |
4385 | rsp->OutputBufferLength = | |
4386 | cpu_to_le32(sizeof(struct smb2_file_standard_info)); | |
4387 | inc_rfc1001_len(rsp_org, | |
4388 | sizeof(struct smb2_file_standard_info)); | |
4389 | } | |
4390 | ||
4391 | static void get_file_alignment_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4392 | void *rsp_org) |
e2f34481 NJ |
4393 | { |
4394 | struct smb2_file_alignment_info *file_info; | |
4395 | ||
4396 | file_info = (struct smb2_file_alignment_info *)rsp->Buffer; | |
4397 | file_info->AlignmentRequirement = 0; | |
4398 | rsp->OutputBufferLength = | |
4399 | cpu_to_le32(sizeof(struct smb2_file_alignment_info)); | |
4400 | inc_rfc1001_len(rsp_org, | |
4401 | sizeof(struct smb2_file_alignment_info)); | |
4402 | } | |
4403 | ||
4404 | static int get_file_all_info(struct ksmbd_work *work, | |
070fb21e NJ |
4405 | struct smb2_query_info_rsp *rsp, |
4406 | struct ksmbd_file *fp, | |
4407 | void *rsp_org) | |
e2f34481 NJ |
4408 | { |
4409 | struct ksmbd_conn *conn = work->conn; | |
4410 | struct smb2_file_all_info *file_info; | |
4411 | unsigned int delete_pending; | |
4412 | struct inode *inode; | |
4413 | struct kstat stat; | |
4414 | int conv_len; | |
4415 | char *filename; | |
4416 | u64 time; | |
4417 | ||
4418 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
4419 | ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n", | |
070fb21e | 4420 | fp->daccess); |
e2f34481 NJ |
4421 | return -EACCES; |
4422 | } | |
4423 | ||
50f500b7 NJ |
4424 | filename = convert_to_nt_pathname(work->tcon->share_conf, &fp->filp->f_path); |
4425 | if (IS_ERR(filename)) | |
4426 | return PTR_ERR(filename); | |
e2f34481 | 4427 | |
ab0b263b | 4428 | inode = file_inode(fp->filp); |
b74d24f7 | 4429 | generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); |
e2f34481 NJ |
4430 | |
4431 | ksmbd_debug(SMB, "filename = %s\n", filename); | |
4432 | delete_pending = ksmbd_inode_pending_delete(fp); | |
4433 | file_info = (struct smb2_file_all_info *)rsp->Buffer; | |
4434 | ||
4435 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4436 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4437 | file_info->LastAccessTime = cpu_to_le64(time); | |
4438 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4439 | file_info->LastWriteTime = cpu_to_le64(time); | |
4440 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4441 | file_info->ChangeTime = cpu_to_le64(time); | |
4442 | file_info->Attributes = fp->f_ci->m_fattr; | |
4443 | file_info->Pad1 = 0; | |
4444 | file_info->AllocationSize = | |
4445 | cpu_to_le64(get_allocation_size(inode, &stat)); | |
4446 | file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4447 | file_info->NumberOfLinks = | |
4448 | cpu_to_le32(get_nlink(&stat) - delete_pending); | |
4449 | file_info->DeletePending = delete_pending; | |
4450 | file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0; | |
4451 | file_info->Pad2 = 0; | |
4452 | file_info->IndexNumber = cpu_to_le64(stat.ino); | |
4453 | file_info->EASize = 0; | |
4454 | file_info->AccessFlags = fp->daccess; | |
4455 | file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); | |
4456 | file_info->Mode = fp->coption; | |
4457 | file_info->AlignmentRequirement = 0; | |
070fb21e NJ |
4458 | conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename, |
4459 | PATH_MAX, conn->local_nls, 0); | |
e2f34481 NJ |
4460 | conv_len *= 2; |
4461 | file_info->FileNameLength = cpu_to_le32(conv_len); | |
4462 | rsp->OutputBufferLength = | |
4463 | cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1); | |
4464 | kfree(filename); | |
4465 | inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); | |
4466 | return 0; | |
4467 | } | |
4468 | ||
4469 | static void get_file_alternate_info(struct ksmbd_work *work, | |
070fb21e NJ |
4470 | struct smb2_query_info_rsp *rsp, |
4471 | struct ksmbd_file *fp, | |
4472 | void *rsp_org) | |
e2f34481 NJ |
4473 | { |
4474 | struct ksmbd_conn *conn = work->conn; | |
4475 | struct smb2_file_alt_name_info *file_info; | |
493fa2fb | 4476 | struct dentry *dentry = fp->filp->f_path.dentry; |
e2f34481 | 4477 | int conv_len; |
e2f34481 | 4478 | |
493fa2fb | 4479 | spin_lock(&dentry->d_lock); |
e2f34481 NJ |
4480 | file_info = (struct smb2_file_alt_name_info *)rsp->Buffer; |
4481 | conv_len = ksmbd_extract_shortname(conn, | |
493fa2fb | 4482 | dentry->d_name.name, |
e2f34481 | 4483 | file_info->FileName); |
493fa2fb | 4484 | spin_unlock(&dentry->d_lock); |
e2f34481 NJ |
4485 | file_info->FileNameLength = cpu_to_le32(conv_len); |
4486 | rsp->OutputBufferLength = | |
4487 | cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len); | |
4488 | inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); | |
4489 | } | |
4490 | ||
4491 | static void get_file_stream_info(struct ksmbd_work *work, | |
070fb21e NJ |
4492 | struct smb2_query_info_rsp *rsp, |
4493 | struct ksmbd_file *fp, | |
4494 | void *rsp_org) | |
e2f34481 NJ |
4495 | { |
4496 | struct ksmbd_conn *conn = work->conn; | |
4497 | struct smb2_file_stream_info *file_info; | |
4498 | char *stream_name, *xattr_list = NULL, *stream_buf; | |
4499 | struct kstat stat; | |
c22180a5 | 4500 | const struct path *path = &fp->filp->f_path; |
e2f34481 NJ |
4501 | ssize_t xattr_list_len; |
4502 | int nbytes = 0, streamlen, stream_name_len, next, idx = 0; | |
34061d6b HL |
4503 | int buf_free_len; |
4504 | struct smb2_query_info_req *req = ksmbd_req_buf_next(work); | |
e2f34481 | 4505 | |
b74d24f7 | 4506 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4507 | &stat); |
e2f34481 NJ |
4508 | file_info = (struct smb2_file_stream_info *)rsp->Buffer; |
4509 | ||
1ec72153 NJ |
4510 | buf_free_len = |
4511 | smb2_calc_max_out_buf_len(work, 8, | |
4512 | le32_to_cpu(req->OutputBufferLength)); | |
4513 | if (buf_free_len < 0) | |
4514 | goto out; | |
4515 | ||
e2f34481 NJ |
4516 | xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); |
4517 | if (xattr_list_len < 0) { | |
4518 | goto out; | |
4519 | } else if (!xattr_list_len) { | |
4520 | ksmbd_debug(SMB, "empty xattr in the file\n"); | |
4521 | goto out; | |
4522 | } | |
4523 | ||
4524 | while (idx < xattr_list_len) { | |
4525 | stream_name = xattr_list + idx; | |
4526 | streamlen = strlen(stream_name); | |
4527 | idx += streamlen + 1; | |
4528 | ||
4529 | ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen); | |
4530 | ||
4531 | if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN], | |
64b39f4a | 4532 | STREAM_PREFIX, STREAM_PREFIX_LEN)) |
e2f34481 NJ |
4533 | continue; |
4534 | ||
4535 | stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN + | |
4536 | STREAM_PREFIX_LEN); | |
4537 | streamlen = stream_name_len; | |
4538 | ||
4539 | /* plus : size */ | |
4540 | streamlen += 1; | |
4541 | stream_buf = kmalloc(streamlen + 1, GFP_KERNEL); | |
4542 | if (!stream_buf) | |
4543 | break; | |
4544 | ||
4545 | streamlen = snprintf(stream_buf, streamlen + 1, | |
070fb21e | 4546 | ":%s", &stream_name[XATTR_NAME_STREAM_LEN]); |
e2f34481 | 4547 | |
34061d6b | 4548 | next = sizeof(struct smb2_file_stream_info) + streamlen * 2; |
178ca6f8 NJ |
4549 | if (next > buf_free_len) { |
4550 | kfree(stream_buf); | |
34061d6b | 4551 | break; |
178ca6f8 | 4552 | } |
34061d6b | 4553 | |
070fb21e | 4554 | file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes]; |
e2f34481 | 4555 | streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, |
070fb21e NJ |
4556 | stream_buf, streamlen, |
4557 | conn->local_nls, 0); | |
e2f34481 NJ |
4558 | streamlen *= 2; |
4559 | kfree(stream_buf); | |
4560 | file_info->StreamNameLength = cpu_to_le32(streamlen); | |
4561 | file_info->StreamSize = cpu_to_le64(stream_name_len); | |
4562 | file_info->StreamAllocationSize = cpu_to_le64(stream_name_len); | |
4563 | ||
e2f34481 | 4564 | nbytes += next; |
34061d6b | 4565 | buf_free_len -= next; |
e2f34481 NJ |
4566 | file_info->NextEntryOffset = cpu_to_le32(next); |
4567 | } | |
4568 | ||
1ec72153 | 4569 | out: |
34061d6b HL |
4570 | if (!S_ISDIR(stat.mode) && |
4571 | buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) { | |
e2f34481 NJ |
4572 | file_info = (struct smb2_file_stream_info *) |
4573 | &rsp->Buffer[nbytes]; | |
4574 | streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, | |
070fb21e | 4575 | "::$DATA", 7, conn->local_nls, 0); |
e2f34481 NJ |
4576 | streamlen *= 2; |
4577 | file_info->StreamNameLength = cpu_to_le32(streamlen); | |
1ec72153 NJ |
4578 | file_info->StreamSize = cpu_to_le64(stat.size); |
4579 | file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9); | |
e2f34481 NJ |
4580 | nbytes += sizeof(struct smb2_file_stream_info) + streamlen; |
4581 | } | |
4582 | ||
4583 | /* last entry offset should be 0 */ | |
4584 | file_info->NextEntryOffset = 0; | |
79f6b11a | 4585 | kvfree(xattr_list); |
e2f34481 NJ |
4586 | |
4587 | rsp->OutputBufferLength = cpu_to_le32(nbytes); | |
4588 | inc_rfc1001_len(rsp_org, nbytes); | |
4589 | } | |
4590 | ||
4591 | static void get_file_internal_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4592 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4593 | { |
4594 | struct smb2_file_internal_info *file_info; | |
4595 | struct kstat stat; | |
4596 | ||
b74d24f7 | 4597 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4598 | &stat); |
e2f34481 NJ |
4599 | file_info = (struct smb2_file_internal_info *)rsp->Buffer; |
4600 | file_info->IndexNumber = cpu_to_le64(stat.ino); | |
4601 | rsp->OutputBufferLength = | |
4602 | cpu_to_le32(sizeof(struct smb2_file_internal_info)); | |
4603 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); | |
4604 | } | |
4605 | ||
4606 | static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4607 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4608 | { |
4609 | struct smb2_file_ntwrk_info *file_info; | |
4610 | struct inode *inode; | |
4611 | struct kstat stat; | |
4612 | u64 time; | |
4613 | ||
4614 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4615 | pr_err("no right to read the attributes : 0x%x\n", |
4616 | fp->daccess); | |
e2f34481 NJ |
4617 | return -EACCES; |
4618 | } | |
4619 | ||
4620 | file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer; | |
4621 | ||
ab0b263b | 4622 | inode = file_inode(fp->filp); |
b74d24f7 | 4623 | generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); |
e2f34481 NJ |
4624 | |
4625 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4626 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4627 | file_info->LastAccessTime = cpu_to_le64(time); | |
4628 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4629 | file_info->LastWriteTime = cpu_to_le64(time); | |
4630 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4631 | file_info->ChangeTime = cpu_to_le64(time); | |
4632 | file_info->Attributes = fp->f_ci->m_fattr; | |
4633 | file_info->AllocationSize = | |
4634 | cpu_to_le64(get_allocation_size(inode, &stat)); | |
4635 | file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4636 | file_info->Reserved = cpu_to_le32(0); | |
4637 | rsp->OutputBufferLength = | |
4638 | cpu_to_le32(sizeof(struct smb2_file_ntwrk_info)); | |
4639 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info)); | |
4640 | return 0; | |
4641 | } | |
4642 | ||
64b39f4a | 4643 | static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org) |
e2f34481 NJ |
4644 | { |
4645 | struct smb2_file_ea_info *file_info; | |
4646 | ||
4647 | file_info = (struct smb2_file_ea_info *)rsp->Buffer; | |
4648 | file_info->EASize = 0; | |
4649 | rsp->OutputBufferLength = | |
4650 | cpu_to_le32(sizeof(struct smb2_file_ea_info)); | |
4651 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info)); | |
4652 | } | |
4653 | ||
4654 | static void get_file_position_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4655 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4656 | { |
4657 | struct smb2_file_pos_info *file_info; | |
4658 | ||
4659 | file_info = (struct smb2_file_pos_info *)rsp->Buffer; | |
4660 | file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); | |
4661 | rsp->OutputBufferLength = | |
4662 | cpu_to_le32(sizeof(struct smb2_file_pos_info)); | |
4663 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info)); | |
4664 | } | |
4665 | ||
4666 | static void get_file_mode_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4667 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4668 | { |
4669 | struct smb2_file_mode_info *file_info; | |
4670 | ||
4671 | file_info = (struct smb2_file_mode_info *)rsp->Buffer; | |
4672 | file_info->Mode = fp->coption & FILE_MODE_INFO_MASK; | |
4673 | rsp->OutputBufferLength = | |
4674 | cpu_to_le32(sizeof(struct smb2_file_mode_info)); | |
4675 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info)); | |
4676 | } | |
4677 | ||
4678 | static void get_file_compression_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4679 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4680 | { |
4681 | struct smb2_file_comp_info *file_info; | |
4682 | struct kstat stat; | |
4683 | ||
b74d24f7 | 4684 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4685 | &stat); |
e2f34481 NJ |
4686 | |
4687 | file_info = (struct smb2_file_comp_info *)rsp->Buffer; | |
4688 | file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9); | |
4689 | file_info->CompressionFormat = COMPRESSION_FORMAT_NONE; | |
4690 | file_info->CompressionUnitShift = 0; | |
4691 | file_info->ChunkShift = 0; | |
4692 | file_info->ClusterShift = 0; | |
4693 | memset(&file_info->Reserved[0], 0, 3); | |
4694 | ||
4695 | rsp->OutputBufferLength = | |
4696 | cpu_to_le32(sizeof(struct smb2_file_comp_info)); | |
4697 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info)); | |
4698 | } | |
4699 | ||
4700 | static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4701 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4702 | { |
4703 | struct smb2_file_attr_tag_info *file_info; | |
4704 | ||
4705 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4706 | pr_err("no right to read the attributes : 0x%x\n", |
4707 | fp->daccess); | |
e2f34481 NJ |
4708 | return -EACCES; |
4709 | } | |
4710 | ||
4711 | file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer; | |
4712 | file_info->FileAttributes = fp->f_ci->m_fattr; | |
4713 | file_info->ReparseTag = 0; | |
4714 | rsp->OutputBufferLength = | |
4715 | cpu_to_le32(sizeof(struct smb2_file_attr_tag_info)); | |
070fb21e | 4716 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info)); |
e2f34481 NJ |
4717 | return 0; |
4718 | } | |
4719 | ||
4720 | static int find_file_posix_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4721 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4722 | { |
4723 | struct smb311_posix_qinfo *file_info; | |
ab0b263b | 4724 | struct inode *inode = file_inode(fp->filp); |
e67fe633 CB |
4725 | struct mnt_idmap *idmap = file_mnt_idmap(fp->filp); |
4726 | vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode); | |
4727 | vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); | |
e2f34481 | 4728 | u64 time; |
d5919f2a | 4729 | int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32; |
e2f34481 NJ |
4730 | |
4731 | file_info = (struct smb311_posix_qinfo *)rsp->Buffer; | |
4732 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4733 | time = ksmbd_UnixTimeToNT(inode->i_atime); | |
4734 | file_info->LastAccessTime = cpu_to_le64(time); | |
4735 | time = ksmbd_UnixTimeToNT(inode->i_mtime); | |
4736 | file_info->LastWriteTime = cpu_to_le64(time); | |
4737 | time = ksmbd_UnixTimeToNT(inode->i_ctime); | |
4738 | file_info->ChangeTime = cpu_to_le64(time); | |
4739 | file_info->DosAttributes = fp->f_ci->m_fattr; | |
4740 | file_info->Inode = cpu_to_le64(inode->i_ino); | |
4741 | file_info->EndOfFile = cpu_to_le64(inode->i_size); | |
4742 | file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9); | |
4743 | file_info->HardLinks = cpu_to_le32(inode->i_nlink); | |
f6c2b201 | 4744 | file_info->Mode = cpu_to_le32(inode->i_mode & 0777); |
e2f34481 | 4745 | file_info->DeviceId = cpu_to_le32(inode->i_rdev); |
d5919f2a NJ |
4746 | |
4747 | /* | |
4748 | * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)). | |
4749 | * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) + | |
4750 | * sub_auth(4 * 1(num_subauth)) + RID(4). | |
4751 | */ | |
4752 | id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)), | |
4753 | SIDUNIX_USER, (struct smb_sid *)&file_info->Sids[0]); | |
4754 | id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)), | |
4755 | SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]); | |
4756 | ||
4757 | rsp->OutputBufferLength = cpu_to_le32(out_buf_len); | |
4758 | inc_rfc1001_len(rsp_org, out_buf_len); | |
4759 | return out_buf_len; | |
e2f34481 NJ |
4760 | } |
4761 | ||
e2f34481 | 4762 | static int smb2_get_info_file(struct ksmbd_work *work, |
070fb21e | 4763 | struct smb2_query_info_req *req, |
cb451720 | 4764 | struct smb2_query_info_rsp *rsp) |
e2f34481 NJ |
4765 | { |
4766 | struct ksmbd_file *fp; | |
4767 | int fileinfoclass = 0; | |
4768 | int rc = 0; | |
4769 | int file_infoclass_size; | |
4770 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; | |
4771 | ||
4772 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 4773 | KSMBD_SHARE_FLAG_PIPE)) { |
e2f34481 | 4774 | /* smb2 info file called for pipe */ |
cb451720 NJ |
4775 | return smb2_get_info_file_pipe(work->sess, req, rsp, |
4776 | work->response_buf); | |
e2f34481 NJ |
4777 | } |
4778 | ||
4779 | if (work->next_smb2_rcv_hdr_off) { | |
2d004c6c | 4780 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 4781 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 4782 | work->compound_fid); |
e2f34481 NJ |
4783 | id = work->compound_fid; |
4784 | pid = work->compound_pfid; | |
4785 | } | |
4786 | } | |
4787 | ||
3867369e | 4788 | if (!has_file_id(id)) { |
2d004c6c PA |
4789 | id = req->VolatileFileId; |
4790 | pid = req->PersistentFileId; | |
e2f34481 NJ |
4791 | } |
4792 | ||
4793 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
4794 | if (!fp) | |
4795 | return -ENOENT; | |
4796 | ||
4797 | fileinfoclass = req->FileInfoClass; | |
4798 | ||
4799 | switch (fileinfoclass) { | |
4800 | case FILE_ACCESS_INFORMATION: | |
cb451720 | 4801 | get_file_access_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4802 | file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE; |
4803 | break; | |
4804 | ||
4805 | case FILE_BASIC_INFORMATION: | |
cb451720 | 4806 | rc = get_file_basic_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4807 | file_infoclass_size = FILE_BASIC_INFORMATION_SIZE; |
4808 | break; | |
4809 | ||
4810 | case FILE_STANDARD_INFORMATION: | |
cb451720 | 4811 | get_file_standard_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4812 | file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE; |
4813 | break; | |
4814 | ||
4815 | case FILE_ALIGNMENT_INFORMATION: | |
cb451720 | 4816 | get_file_alignment_info(rsp, work->response_buf); |
e2f34481 NJ |
4817 | file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE; |
4818 | break; | |
4819 | ||
4820 | case FILE_ALL_INFORMATION: | |
cb451720 | 4821 | rc = get_file_all_info(work, rsp, fp, work->response_buf); |
e2f34481 NJ |
4822 | file_infoclass_size = FILE_ALL_INFORMATION_SIZE; |
4823 | break; | |
4824 | ||
4825 | case FILE_ALTERNATE_NAME_INFORMATION: | |
cb451720 | 4826 | get_file_alternate_info(work, rsp, fp, work->response_buf); |
e2f34481 NJ |
4827 | file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE; |
4828 | break; | |
4829 | ||
4830 | case FILE_STREAM_INFORMATION: | |
cb451720 | 4831 | get_file_stream_info(work, rsp, fp, work->response_buf); |
e2f34481 NJ |
4832 | file_infoclass_size = FILE_STREAM_INFORMATION_SIZE; |
4833 | break; | |
4834 | ||
4835 | case FILE_INTERNAL_INFORMATION: | |
cb451720 | 4836 | get_file_internal_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4837 | file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE; |
4838 | break; | |
4839 | ||
4840 | case FILE_NETWORK_OPEN_INFORMATION: | |
cb451720 | 4841 | rc = get_file_network_open_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4842 | file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE; |
4843 | break; | |
4844 | ||
4845 | case FILE_EA_INFORMATION: | |
cb451720 | 4846 | get_file_ea_info(rsp, work->response_buf); |
e2f34481 NJ |
4847 | file_infoclass_size = FILE_EA_INFORMATION_SIZE; |
4848 | break; | |
4849 | ||
4850 | case FILE_FULL_EA_INFORMATION: | |
cb451720 | 4851 | rc = smb2_get_ea(work, fp, req, rsp, work->response_buf); |
e2f34481 NJ |
4852 | file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE; |
4853 | break; | |
4854 | ||
4855 | case FILE_POSITION_INFORMATION: | |
cb451720 | 4856 | get_file_position_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4857 | file_infoclass_size = FILE_POSITION_INFORMATION_SIZE; |
4858 | break; | |
4859 | ||
4860 | case FILE_MODE_INFORMATION: | |
cb451720 | 4861 | get_file_mode_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4862 | file_infoclass_size = FILE_MODE_INFORMATION_SIZE; |
4863 | break; | |
4864 | ||
4865 | case FILE_COMPRESSION_INFORMATION: | |
cb451720 | 4866 | get_file_compression_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4867 | file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE; |
4868 | break; | |
4869 | ||
4870 | case FILE_ATTRIBUTE_TAG_INFORMATION: | |
cb451720 | 4871 | rc = get_file_attribute_tag_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4872 | file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE; |
4873 | break; | |
4874 | case SMB_FIND_FILE_POSIX_INFO: | |
4875 | if (!work->tcon->posix_extensions) { | |
bde1694a | 4876 | pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
e2f34481 NJ |
4877 | rc = -EOPNOTSUPP; |
4878 | } else { | |
d5919f2a NJ |
4879 | file_infoclass_size = find_file_posix_info(rsp, fp, |
4880 | work->response_buf); | |
e2f34481 NJ |
4881 | } |
4882 | break; | |
4883 | default: | |
4884 | ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n", | |
4885 | fileinfoclass); | |
4886 | rc = -EOPNOTSUPP; | |
4887 | } | |
4888 | if (!rc) | |
4889 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
cb451720 | 4890 | rsp, work->response_buf, |
e2f34481 NJ |
4891 | file_infoclass_size); |
4892 | ksmbd_fd_put(work, fp); | |
4893 | return rc; | |
4894 | } | |
4895 | ||
e2f34481 | 4896 | static int smb2_get_info_filesystem(struct ksmbd_work *work, |
070fb21e | 4897 | struct smb2_query_info_req *req, |
cb451720 | 4898 | struct smb2_query_info_rsp *rsp) |
e2f34481 NJ |
4899 | { |
4900 | struct ksmbd_session *sess = work->sess; | |
af7c39d9 | 4901 | struct ksmbd_conn *conn = work->conn; |
e2f34481 NJ |
4902 | struct ksmbd_share_config *share = work->tcon->share_conf; |
4903 | int fsinfoclass = 0; | |
4904 | struct kstatfs stfs; | |
4905 | struct path path; | |
4906 | int rc = 0, len; | |
4907 | int fs_infoclass_size = 0; | |
a6a5fa77 | 4908 | |
265fd199 | 4909 | rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path); |
e2f34481 | 4910 | if (rc) { |
bde1694a | 4911 | pr_err("cannot create vfs path\n"); |
e2f34481 NJ |
4912 | return -EIO; |
4913 | } | |
4914 | ||
4915 | rc = vfs_statfs(&path, &stfs); | |
4916 | if (rc) { | |
bde1694a | 4917 | pr_err("cannot do stat of path %s\n", share->path); |
e2f34481 NJ |
4918 | path_put(&path); |
4919 | return -EIO; | |
4920 | } | |
4921 | ||
4922 | fsinfoclass = req->FileInfoClass; | |
4923 | ||
4924 | switch (fsinfoclass) { | |
4925 | case FS_DEVICE_INFORMATION: | |
4926 | { | |
4927 | struct filesystem_device_info *info; | |
4928 | ||
4929 | info = (struct filesystem_device_info *)rsp->Buffer; | |
4930 | ||
4931 | info->DeviceType = cpu_to_le32(stfs.f_type); | |
4932 | info->DeviceCharacteristics = cpu_to_le32(0x00000020); | |
4933 | rsp->OutputBufferLength = cpu_to_le32(8); | |
cb451720 | 4934 | inc_rfc1001_len(work->response_buf, 8); |
e2f34481 NJ |
4935 | fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE; |
4936 | break; | |
4937 | } | |
4938 | case FS_ATTRIBUTE_INFORMATION: | |
4939 | { | |
4940 | struct filesystem_attribute_info *info; | |
4941 | size_t sz; | |
4942 | ||
4943 | info = (struct filesystem_attribute_info *)rsp->Buffer; | |
4944 | info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS | | |
4945 | FILE_PERSISTENT_ACLS | | |
4946 | FILE_UNICODE_ON_DISK | | |
4947 | FILE_CASE_PRESERVED_NAMES | | |
eb817368 NJ |
4948 | FILE_CASE_SENSITIVE_SEARCH | |
4949 | FILE_SUPPORTS_BLOCK_REFCOUNTING); | |
e2f34481 NJ |
4950 | |
4951 | info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps); | |
4952 | ||
4953 | info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen); | |
4954 | len = smbConvertToUTF16((__le16 *)info->FileSystemName, | |
4955 | "NTFS", PATH_MAX, conn->local_nls, 0); | |
4956 | len = len * 2; | |
4957 | info->FileSystemNameLen = cpu_to_le32(len); | |
4958 | sz = sizeof(struct filesystem_attribute_info) - 2 + len; | |
4959 | rsp->OutputBufferLength = cpu_to_le32(sz); | |
cb451720 | 4960 | inc_rfc1001_len(work->response_buf, sz); |
e2f34481 NJ |
4961 | fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE; |
4962 | break; | |
4963 | } | |
4964 | case FS_VOLUME_INFORMATION: | |
4965 | { | |
4966 | struct filesystem_vol_info *info; | |
4967 | size_t sz; | |
5d2f0b10 | 4968 | unsigned int serial_crc = 0; |
e2f34481 NJ |
4969 | |
4970 | info = (struct filesystem_vol_info *)(rsp->Buffer); | |
4971 | info->VolumeCreationTime = 0; | |
5d2f0b10 NJ |
4972 | serial_crc = crc32_le(serial_crc, share->name, |
4973 | strlen(share->name)); | |
4974 | serial_crc = crc32_le(serial_crc, share->path, | |
4975 | strlen(share->path)); | |
4976 | serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(), | |
4977 | strlen(ksmbd_netbios_name())); | |
e2f34481 | 4978 | /* Taking dummy value of serial number*/ |
5d2f0b10 | 4979 | info->SerialNumber = cpu_to_le32(serial_crc); |
e2f34481 NJ |
4980 | len = smbConvertToUTF16((__le16 *)info->VolumeLabel, |
4981 | share->name, PATH_MAX, | |
4982 | conn->local_nls, 0); | |
4983 | len = len * 2; | |
4984 | info->VolumeLabelSize = cpu_to_le32(len); | |
4985 | info->Reserved = 0; | |
4986 | sz = sizeof(struct filesystem_vol_info) - 2 + len; | |
4987 | rsp->OutputBufferLength = cpu_to_le32(sz); | |
cb451720 | 4988 | inc_rfc1001_len(work->response_buf, sz); |
e2f34481 NJ |
4989 | fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE; |
4990 | break; | |
4991 | } | |
4992 | case FS_SIZE_INFORMATION: | |
4993 | { | |
4994 | struct filesystem_info *info; | |
e2f34481 NJ |
4995 | |
4996 | info = (struct filesystem_info *)(rsp->Buffer); | |
e2f34481 NJ |
4997 | info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
4998 | info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree); | |
ee81cae1 NJ |
4999 | info->SectorsPerAllocationUnit = cpu_to_le32(1); |
5000 | info->BytesPerSector = cpu_to_le32(stfs.f_bsize); | |
e2f34481 | 5001 | rsp->OutputBufferLength = cpu_to_le32(24); |
cb451720 | 5002 | inc_rfc1001_len(work->response_buf, 24); |
e2f34481 NJ |
5003 | fs_infoclass_size = FS_SIZE_INFORMATION_SIZE; |
5004 | break; | |
5005 | } | |
5006 | case FS_FULL_SIZE_INFORMATION: | |
5007 | { | |
5008 | struct smb2_fs_full_size_info *info; | |
e2f34481 NJ |
5009 | |
5010 | info = (struct smb2_fs_full_size_info *)(rsp->Buffer); | |
e2f34481 NJ |
5011 | info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
5012 | info->CallerAvailableAllocationUnits = | |
5013 | cpu_to_le64(stfs.f_bavail); | |
5014 | info->ActualAvailableAllocationUnits = | |
5015 | cpu_to_le64(stfs.f_bfree); | |
ee81cae1 NJ |
5016 | info->SectorsPerAllocationUnit = cpu_to_le32(1); |
5017 | info->BytesPerSector = cpu_to_le32(stfs.f_bsize); | |
e2f34481 | 5018 | rsp->OutputBufferLength = cpu_to_le32(32); |
cb451720 | 5019 | inc_rfc1001_len(work->response_buf, 32); |
e2f34481 NJ |
5020 | fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE; |
5021 | break; | |
5022 | } | |
5023 | case FS_OBJECT_ID_INFORMATION: | |
5024 | { | |
5025 | struct object_id_info *info; | |
5026 | ||
5027 | info = (struct object_id_info *)(rsp->Buffer); | |
5028 | ||
5029 | if (!user_guest(sess->user)) | |
5030 | memcpy(info->objid, user_passkey(sess->user), 16); | |
5031 | else | |
5032 | memset(info->objid, 0, 16); | |
5033 | ||
5034 | info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC); | |
5035 | info->extended_info.version = cpu_to_le32(1); | |
5036 | info->extended_info.release = cpu_to_le32(1); | |
5037 | info->extended_info.rel_date = 0; | |
64b39f4a | 5038 | memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0")); |
e2f34481 | 5039 | rsp->OutputBufferLength = cpu_to_le32(64); |
cb451720 | 5040 | inc_rfc1001_len(work->response_buf, 64); |
e2f34481 NJ |
5041 | fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE; |
5042 | break; | |
5043 | } | |
5044 | case FS_SECTOR_SIZE_INFORMATION: | |
5045 | { | |
5046 | struct smb3_fs_ss_info *info; | |
02655a70 NJ |
5047 | unsigned int sector_size = |
5048 | min_t(unsigned int, path.mnt->mnt_sb->s_blocksize, 4096); | |
e2f34481 NJ |
5049 | |
5050 | info = (struct smb3_fs_ss_info *)(rsp->Buffer); | |
e2f34481 | 5051 | |
02655a70 | 5052 | info->LogicalBytesPerSector = cpu_to_le32(sector_size); |
e2f34481 | 5053 | info->PhysicalBytesPerSectorForAtomicity = |
02655a70 NJ |
5054 | cpu_to_le32(sector_size); |
5055 | info->PhysicalBytesPerSectorForPerf = cpu_to_le32(sector_size); | |
e2f34481 | 5056 | info->FSEffPhysicalBytesPerSectorForAtomicity = |
02655a70 | 5057 | cpu_to_le32(sector_size); |
e2f34481 NJ |
5058 | info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE | |
5059 | SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE); | |
5060 | info->ByteOffsetForSectorAlignment = 0; | |
5061 | info->ByteOffsetForPartitionAlignment = 0; | |
5062 | rsp->OutputBufferLength = cpu_to_le32(28); | |
cb451720 | 5063 | inc_rfc1001_len(work->response_buf, 28); |
e2f34481 NJ |
5064 | fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE; |
5065 | break; | |
5066 | } | |
5067 | case FS_CONTROL_INFORMATION: | |
5068 | { | |
5069 | /* | |
5070 | * TODO : The current implementation is based on | |
5071 | * test result with win7(NTFS) server. It's need to | |
5072 | * modify this to get valid Quota values | |
5073 | * from Linux kernel | |
5074 | */ | |
5075 | struct smb2_fs_control_info *info; | |
5076 | ||
5077 | info = (struct smb2_fs_control_info *)(rsp->Buffer); | |
5078 | info->FreeSpaceStartFiltering = 0; | |
5079 | info->FreeSpaceThreshold = 0; | |
5080 | info->FreeSpaceStopFiltering = 0; | |
5081 | info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID); | |
5082 | info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID); | |
5083 | info->Padding = 0; | |
5084 | rsp->OutputBufferLength = cpu_to_le32(48); | |
cb451720 | 5085 | inc_rfc1001_len(work->response_buf, 48); |
e2f34481 NJ |
5086 | fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE; |
5087 | break; | |
5088 | } | |
5089 | case FS_POSIX_INFORMATION: | |
5090 | { | |
5091 | struct filesystem_posix_info *info; | |
e2f34481 NJ |
5092 | |
5093 | if (!work->tcon->posix_extensions) { | |
bde1694a | 5094 | pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
e2f34481 NJ |
5095 | rc = -EOPNOTSUPP; |
5096 | } else { | |
5097 | info = (struct filesystem_posix_info *)(rsp->Buffer); | |
ee81cae1 | 5098 | info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize); |
e2f34481 NJ |
5099 | info->BlockSize = cpu_to_le32(stfs.f_bsize); |
5100 | info->TotalBlocks = cpu_to_le64(stfs.f_blocks); | |
5101 | info->BlocksAvail = cpu_to_le64(stfs.f_bfree); | |
5102 | info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail); | |
5103 | info->TotalFileNodes = cpu_to_le64(stfs.f_files); | |
5104 | info->FreeFileNodes = cpu_to_le64(stfs.f_ffree); | |
5105 | rsp->OutputBufferLength = cpu_to_le32(56); | |
cb451720 | 5106 | inc_rfc1001_len(work->response_buf, 56); |
e2f34481 NJ |
5107 | fs_infoclass_size = FS_POSIX_INFORMATION_SIZE; |
5108 | } | |
5109 | break; | |
5110 | } | |
5111 | default: | |
5112 | path_put(&path); | |
5113 | return -EOPNOTSUPP; | |
5114 | } | |
5115 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
cb451720 | 5116 | rsp, work->response_buf, |
e2f34481 NJ |
5117 | fs_infoclass_size); |
5118 | path_put(&path); | |
5119 | return rc; | |
5120 | } | |
5121 | ||
5122 | static int smb2_get_info_sec(struct ksmbd_work *work, | |
070fb21e | 5123 | struct smb2_query_info_req *req, |
cb451720 | 5124 | struct smb2_query_info_rsp *rsp) |
e2f34481 NJ |
5125 | { |
5126 | struct ksmbd_file *fp; | |
4609e1f1 | 5127 | struct mnt_idmap *idmap; |
e2f34481 NJ |
5128 | struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL; |
5129 | struct smb_fattr fattr = {{0}}; | |
5130 | struct inode *inode; | |
8f054118 | 5131 | __u32 secdesclen = 0; |
e2f34481 NJ |
5132 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; |
5133 | int addition_info = le32_to_cpu(req->AdditionalInformation); | |
8f054118 | 5134 | int rc = 0, ppntsd_size = 0; |
e2f34481 | 5135 | |
e294f78d NJ |
5136 | if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO | |
5137 | PROTECTED_DACL_SECINFO | | |
5138 | UNPROTECTED_DACL_SECINFO)) { | |
8e537d14 | 5139 | ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n", |
e294f78d | 5140 | addition_info); |
ced2b26a SG |
5141 | |
5142 | pntsd->revision = cpu_to_le16(1); | |
5143 | pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED); | |
5144 | pntsd->osidoffset = 0; | |
5145 | pntsd->gsidoffset = 0; | |
5146 | pntsd->sacloffset = 0; | |
5147 | pntsd->dacloffset = 0; | |
5148 | ||
5149 | secdesclen = sizeof(struct smb_ntsd); | |
5150 | rsp->OutputBufferLength = cpu_to_le32(secdesclen); | |
cb451720 | 5151 | inc_rfc1001_len(work->response_buf, secdesclen); |
ced2b26a SG |
5152 | |
5153 | return 0; | |
5154 | } | |
5155 | ||
e2f34481 | 5156 | if (work->next_smb2_rcv_hdr_off) { |
2d004c6c | 5157 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 5158 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 5159 | work->compound_fid); |
e2f34481 NJ |
5160 | id = work->compound_fid; |
5161 | pid = work->compound_pfid; | |
5162 | } | |
5163 | } | |
5164 | ||
3867369e | 5165 | if (!has_file_id(id)) { |
2d004c6c PA |
5166 | id = req->VolatileFileId; |
5167 | pid = req->PersistentFileId; | |
e2f34481 NJ |
5168 | } |
5169 | ||
5170 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
5171 | if (!fp) | |
5172 | return -ENOENT; | |
5173 | ||
4609e1f1 | 5174 | idmap = file_mnt_idmap(fp->filp); |
ab0b263b | 5175 | inode = file_inode(fp->filp); |
e67fe633 | 5176 | ksmbd_acls_fattr(&fattr, idmap, inode); |
e2f34481 NJ |
5177 | |
5178 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 5179 | KSMBD_SHARE_FLAG_ACL_XATTR)) |
4609e1f1 | 5180 | ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, idmap, |
8f054118 NJ |
5181 | fp->filp->f_path.dentry, |
5182 | &ppntsd); | |
5183 | ||
5184 | /* Check if sd buffer size exceeds response buffer size */ | |
5185 | if (smb2_resp_buf_len(work, 8) > ppntsd_size) | |
4d7ca409 | 5186 | rc = build_sec_desc(idmap, pntsd, ppntsd, ppntsd_size, |
8f054118 | 5187 | addition_info, &secdesclen, &fattr); |
e2f34481 NJ |
5188 | posix_acl_release(fattr.cf_acls); |
5189 | posix_acl_release(fattr.cf_dacls); | |
5190 | kfree(ppntsd); | |
5191 | ksmbd_fd_put(work, fp); | |
5192 | if (rc) | |
5193 | return rc; | |
5194 | ||
5195 | rsp->OutputBufferLength = cpu_to_le32(secdesclen); | |
cb451720 | 5196 | inc_rfc1001_len(work->response_buf, secdesclen); |
e2f34481 NJ |
5197 | return 0; |
5198 | } | |
5199 | ||
5200 | /** | |
5201 | * smb2_query_info() - handler for smb2 query info command | |
5202 | * @work: smb work containing query info request buffer | |
5203 | * | |
5204 | * Return: 0 on success, otherwise error | |
5205 | */ | |
5206 | int smb2_query_info(struct ksmbd_work *work) | |
5207 | { | |
5208 | struct smb2_query_info_req *req; | |
cb451720 | 5209 | struct smb2_query_info_rsp *rsp; |
e2f34481 NJ |
5210 | int rc = 0; |
5211 | ||
e2f34481 NJ |
5212 | WORK_BUFFERS(work, req, rsp); |
5213 | ||
5214 | ksmbd_debug(SMB, "GOT query info request\n"); | |
5215 | ||
5216 | switch (req->InfoType) { | |
5217 | case SMB2_O_INFO_FILE: | |
5218 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); | |
cb451720 | 5219 | rc = smb2_get_info_file(work, req, rsp); |
e2f34481 NJ |
5220 | break; |
5221 | case SMB2_O_INFO_FILESYSTEM: | |
5222 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n"); | |
cb451720 | 5223 | rc = smb2_get_info_filesystem(work, req, rsp); |
e2f34481 NJ |
5224 | break; |
5225 | case SMB2_O_INFO_SECURITY: | |
5226 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); | |
cb451720 | 5227 | rc = smb2_get_info_sec(work, req, rsp); |
e2f34481 NJ |
5228 | break; |
5229 | default: | |
5230 | ksmbd_debug(SMB, "InfoType %d not supported yet\n", | |
070fb21e | 5231 | req->InfoType); |
e2f34481 NJ |
5232 | rc = -EOPNOTSUPP; |
5233 | } | |
5234 | ||
5235 | if (rc < 0) { | |
5236 | if (rc == -EACCES) | |
5237 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
5238 | else if (rc == -ENOENT) | |
5239 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5240 | else if (rc == -EIO) | |
5241 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
5242 | else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0) | |
5243 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
5244 | smb2_set_err_rsp(work); | |
5245 | ||
5246 | ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", | |
070fb21e | 5247 | rc); |
e2f34481 NJ |
5248 | return rc; |
5249 | } | |
5250 | rsp->StructureSize = cpu_to_le16(9); | |
5251 | rsp->OutputBufferOffset = cpu_to_le16(72); | |
cb451720 | 5252 | inc_rfc1001_len(work->response_buf, 8); |
e2f34481 NJ |
5253 | return 0; |
5254 | } | |
5255 | ||
5256 | /** | |
5257 | * smb2_close_pipe() - handler for closing IPC pipe | |
5258 | * @work: smb work containing close request buffer | |
5259 | * | |
5260 | * Return: 0 | |
5261 | */ | |
5262 | static noinline int smb2_close_pipe(struct ksmbd_work *work) | |
5263 | { | |
64b39f4a | 5264 | u64 id; |
cb451720 NJ |
5265 | struct smb2_close_req *req = smb2_get_msg(work->request_buf); |
5266 | struct smb2_close_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 5267 | |
2d004c6c | 5268 | id = req->VolatileFileId; |
e2f34481 NJ |
5269 | ksmbd_session_rpc_close(work->sess, id); |
5270 | ||
5271 | rsp->StructureSize = cpu_to_le16(60); | |
5272 | rsp->Flags = 0; | |
5273 | rsp->Reserved = 0; | |
5274 | rsp->CreationTime = 0; | |
5275 | rsp->LastAccessTime = 0; | |
5276 | rsp->LastWriteTime = 0; | |
5277 | rsp->ChangeTime = 0; | |
5278 | rsp->AllocationSize = 0; | |
5279 | rsp->EndOfFile = 0; | |
5280 | rsp->Attributes = 0; | |
cb451720 | 5281 | inc_rfc1001_len(work->response_buf, 60); |
e2f34481 NJ |
5282 | return 0; |
5283 | } | |
5284 | ||
5285 | /** | |
5286 | * smb2_close() - handler for smb2 close file command | |
5287 | * @work: smb work containing close request buffer | |
5288 | * | |
5289 | * Return: 0 | |
5290 | */ | |
5291 | int smb2_close(struct ksmbd_work *work) | |
5292 | { | |
3867369e | 5293 | u64 volatile_id = KSMBD_NO_FID; |
64b39f4a | 5294 | u64 sess_id; |
e2f34481 NJ |
5295 | struct smb2_close_req *req; |
5296 | struct smb2_close_rsp *rsp; | |
e2f34481 NJ |
5297 | struct ksmbd_conn *conn = work->conn; |
5298 | struct ksmbd_file *fp; | |
5299 | struct inode *inode; | |
5300 | u64 time; | |
5301 | int err = 0; | |
5302 | ||
e2f34481 NJ |
5303 | WORK_BUFFERS(work, req, rsp); |
5304 | ||
5305 | if (test_share_config_flag(work->tcon->share_conf, | |
5306 | KSMBD_SHARE_FLAG_PIPE)) { | |
5307 | ksmbd_debug(SMB, "IPC pipe close request\n"); | |
5308 | return smb2_close_pipe(work); | |
5309 | } | |
5310 | ||
5311 | sess_id = le64_to_cpu(req->hdr.SessionId); | |
5312 | if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) | |
5313 | sess_id = work->compound_sid; | |
5314 | ||
5315 | work->compound_sid = 0; | |
64b39f4a | 5316 | if (check_session_id(conn, sess_id)) { |
e2f34481 | 5317 | work->compound_sid = sess_id; |
64b39f4a | 5318 | } else { |
e2f34481 NJ |
5319 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; |
5320 | if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) | |
5321 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
5322 | err = -EBADF; | |
5323 | goto out; | |
5324 | } | |
5325 | ||
5326 | if (work->next_smb2_rcv_hdr_off && | |
2d004c6c | 5327 | !has_file_id(req->VolatileFileId)) { |
3867369e | 5328 | if (!has_file_id(work->compound_fid)) { |
e2f34481 NJ |
5329 | /* file already closed, return FILE_CLOSED */ |
5330 | ksmbd_debug(SMB, "file already closed\n"); | |
5331 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5332 | err = -EBADF; | |
5333 | goto out; | |
5334 | } else { | |
3867369e NJ |
5335 | ksmbd_debug(SMB, |
5336 | "Compound request set FID = %llu:%llu\n", | |
070fb21e NJ |
5337 | work->compound_fid, |
5338 | work->compound_pfid); | |
e2f34481 NJ |
5339 | volatile_id = work->compound_fid; |
5340 | ||
5341 | /* file closed, stored id is not valid anymore */ | |
5342 | work->compound_fid = KSMBD_NO_FID; | |
5343 | work->compound_pfid = KSMBD_NO_FID; | |
5344 | } | |
5345 | } else { | |
2d004c6c | 5346 | volatile_id = req->VolatileFileId; |
e2f34481 | 5347 | } |
3867369e | 5348 | ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id); |
e2f34481 NJ |
5349 | |
5350 | rsp->StructureSize = cpu_to_le16(60); | |
5351 | rsp->Reserved = 0; | |
5352 | ||
5353 | if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) { | |
5354 | fp = ksmbd_lookup_fd_fast(work, volatile_id); | |
5355 | if (!fp) { | |
5356 | err = -ENOENT; | |
5357 | goto out; | |
5358 | } | |
5359 | ||
ab0b263b | 5360 | inode = file_inode(fp->filp); |
e2f34481 NJ |
5361 | rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB; |
5362 | rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 : | |
5363 | cpu_to_le64(inode->i_blocks << 9); | |
5364 | rsp->EndOfFile = cpu_to_le64(inode->i_size); | |
5365 | rsp->Attributes = fp->f_ci->m_fattr; | |
5366 | rsp->CreationTime = cpu_to_le64(fp->create_time); | |
5367 | time = ksmbd_UnixTimeToNT(inode->i_atime); | |
5368 | rsp->LastAccessTime = cpu_to_le64(time); | |
5369 | time = ksmbd_UnixTimeToNT(inode->i_mtime); | |
5370 | rsp->LastWriteTime = cpu_to_le64(time); | |
5371 | time = ksmbd_UnixTimeToNT(inode->i_ctime); | |
5372 | rsp->ChangeTime = cpu_to_le64(time); | |
5373 | ksmbd_fd_put(work, fp); | |
5374 | } else { | |
5375 | rsp->Flags = 0; | |
5376 | rsp->AllocationSize = 0; | |
5377 | rsp->EndOfFile = 0; | |
5378 | rsp->Attributes = 0; | |
5379 | rsp->CreationTime = 0; | |
5380 | rsp->LastAccessTime = 0; | |
5381 | rsp->LastWriteTime = 0; | |
5382 | rsp->ChangeTime = 0; | |
5383 | } | |
5384 | ||
5385 | err = ksmbd_close_fd(work, volatile_id); | |
5386 | out: | |
5387 | if (err) { | |
5388 | if (rsp->hdr.Status == 0) | |
5389 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5390 | smb2_set_err_rsp(work); | |
5391 | } else { | |
cb451720 | 5392 | inc_rfc1001_len(work->response_buf, 60); |
e2f34481 NJ |
5393 | } |
5394 | ||
5395 | return 0; | |
5396 | } | |
5397 | ||
5398 | /** | |
5399 | * smb2_echo() - handler for smb2 echo(ping) command | |
5400 | * @work: smb work containing echo request buffer | |
5401 | * | |
5402 | * Return: 0 | |
5403 | */ | |
5404 | int smb2_echo(struct ksmbd_work *work) | |
5405 | { | |
cb451720 | 5406 | struct smb2_echo_rsp *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
5407 | |
5408 | rsp->StructureSize = cpu_to_le16(4); | |
5409 | rsp->Reserved = 0; | |
cb451720 | 5410 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
5411 | return 0; |
5412 | } | |
5413 | ||
da1e7ada CB |
5414 | static int smb2_rename(struct ksmbd_work *work, |
5415 | struct ksmbd_file *fp, | |
4609e1f1 | 5416 | struct mnt_idmap *idmap, |
070fb21e NJ |
5417 | struct smb2_file_rename_info *file_info, |
5418 | struct nls_table *local_nls) | |
e2f34481 NJ |
5419 | { |
5420 | struct ksmbd_share_config *share = fp->tcon->share_conf; | |
5421 | char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL; | |
5422 | char *pathname = NULL; | |
5423 | struct path path; | |
5424 | bool file_present = true; | |
5425 | int rc; | |
5426 | ||
5427 | ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n"); | |
5428 | pathname = kmalloc(PATH_MAX, GFP_KERNEL); | |
5429 | if (!pathname) | |
5430 | return -ENOMEM; | |
5431 | ||
2f5930c1 | 5432 | abs_oldname = file_path(fp->filp, pathname, PATH_MAX); |
e2f34481 NJ |
5433 | if (IS_ERR(abs_oldname)) { |
5434 | rc = -EINVAL; | |
5435 | goto out; | |
5436 | } | |
5437 | old_name = strrchr(abs_oldname, '/'); | |
64b39f4a | 5438 | if (old_name && old_name[1] != '\0') { |
e2f34481 | 5439 | old_name++; |
64b39f4a | 5440 | } else { |
e2f34481 | 5441 | ksmbd_debug(SMB, "can't get last component in path %s\n", |
070fb21e | 5442 | abs_oldname); |
e2f34481 NJ |
5443 | rc = -ENOENT; |
5444 | goto out; | |
5445 | } | |
5446 | ||
80917f17 | 5447 | new_name = smb2_get_name(file_info->FileName, |
e2f34481 NJ |
5448 | le32_to_cpu(file_info->FileNameLength), |
5449 | local_nls); | |
5450 | if (IS_ERR(new_name)) { | |
5451 | rc = PTR_ERR(new_name); | |
5452 | goto out; | |
5453 | } | |
5454 | ||
5455 | if (strchr(new_name, ':')) { | |
5456 | int s_type; | |
5457 | char *xattr_stream_name, *stream_name = NULL; | |
5458 | size_t xattr_stream_size; | |
5459 | int len; | |
5460 | ||
5461 | rc = parse_stream_name(new_name, &stream_name, &s_type); | |
5462 | if (rc < 0) | |
5463 | goto out; | |
5464 | ||
5465 | len = strlen(new_name); | |
265fd199 | 5466 | if (len > 0 && new_name[len - 1] != '/') { |
bde1694a | 5467 | pr_err("not allow base filename in rename\n"); |
e2f34481 NJ |
5468 | rc = -ESHARE; |
5469 | goto out; | |
5470 | } | |
5471 | ||
5472 | rc = ksmbd_vfs_xattr_stream_name(stream_name, | |
5473 | &xattr_stream_name, | |
5474 | &xattr_stream_size, | |
5475 | s_type); | |
5476 | if (rc) | |
5477 | goto out; | |
5478 | ||
4609e1f1 | 5479 | rc = ksmbd_vfs_setxattr(idmap, |
af34983e | 5480 | fp->filp->f_path.dentry, |
e2f34481 NJ |
5481 | xattr_stream_name, |
5482 | NULL, 0, 0); | |
5483 | if (rc < 0) { | |
bde1694a NJ |
5484 | pr_err("failed to store stream name in xattr: %d\n", |
5485 | rc); | |
e2f34481 NJ |
5486 | rc = -EINVAL; |
5487 | goto out; | |
5488 | } | |
5489 | ||
5490 | goto out; | |
5491 | } | |
5492 | ||
5493 | ksmbd_debug(SMB, "new name %s\n", new_name); | |
265fd199 HL |
5494 | rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1); |
5495 | if (rc) { | |
5496 | if (rc != -ENOENT) | |
5497 | goto out; | |
e2f34481 | 5498 | file_present = false; |
265fd199 | 5499 | } else { |
e2f34481 | 5500 | path_put(&path); |
265fd199 | 5501 | } |
e2f34481 NJ |
5502 | |
5503 | if (ksmbd_share_veto_filename(share, new_name)) { | |
5504 | rc = -ENOENT; | |
5505 | ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name); | |
5506 | goto out; | |
5507 | } | |
5508 | ||
5509 | if (file_info->ReplaceIfExists) { | |
5510 | if (file_present) { | |
5511 | rc = ksmbd_vfs_remove_file(work, new_name); | |
5512 | if (rc) { | |
5513 | if (rc != -ENOTEMPTY) | |
5514 | rc = -EINVAL; | |
5515 | ksmbd_debug(SMB, "cannot delete %s, rc %d\n", | |
070fb21e | 5516 | new_name, rc); |
e2f34481 NJ |
5517 | goto out; |
5518 | } | |
5519 | } | |
5520 | } else { | |
5521 | if (file_present && | |
64b39f4a | 5522 | strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) { |
e2f34481 NJ |
5523 | rc = -EEXIST; |
5524 | ksmbd_debug(SMB, | |
070fb21e | 5525 | "cannot rename already existing file\n"); |
e2f34481 NJ |
5526 | goto out; |
5527 | } | |
5528 | } | |
5529 | ||
5530 | rc = ksmbd_vfs_fp_rename(work, fp, new_name); | |
5531 | out: | |
5532 | kfree(pathname); | |
5533 | if (!IS_ERR(new_name)) | |
915f570a | 5534 | kfree(new_name); |
e2f34481 NJ |
5535 | return rc; |
5536 | } | |
5537 | ||
e2f34481 | 5538 | static int smb2_create_link(struct ksmbd_work *work, |
070fb21e NJ |
5539 | struct ksmbd_share_config *share, |
5540 | struct smb2_file_link_info *file_info, | |
9496e268 | 5541 | unsigned int buf_len, struct file *filp, |
070fb21e | 5542 | struct nls_table *local_nls) |
e2f34481 NJ |
5543 | { |
5544 | char *link_name = NULL, *target_name = NULL, *pathname = NULL; | |
5545 | struct path path; | |
5546 | bool file_present = true; | |
5547 | int rc; | |
5548 | ||
9496e268 NJ |
5549 | if (buf_len < (u64)sizeof(struct smb2_file_link_info) + |
5550 | le32_to_cpu(file_info->FileNameLength)) | |
5551 | return -EINVAL; | |
5552 | ||
e2f34481 NJ |
5553 | ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n"); |
5554 | pathname = kmalloc(PATH_MAX, GFP_KERNEL); | |
5555 | if (!pathname) | |
5556 | return -ENOMEM; | |
5557 | ||
80917f17 | 5558 | link_name = smb2_get_name(file_info->FileName, |
e2f34481 NJ |
5559 | le32_to_cpu(file_info->FileNameLength), |
5560 | local_nls); | |
5561 | if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) { | |
5562 | rc = -EINVAL; | |
5563 | goto out; | |
5564 | } | |
5565 | ||
5566 | ksmbd_debug(SMB, "link name is %s\n", link_name); | |
2f5930c1 | 5567 | target_name = file_path(filp, pathname, PATH_MAX); |
e2f34481 NJ |
5568 | if (IS_ERR(target_name)) { |
5569 | rc = -EINVAL; | |
5570 | goto out; | |
5571 | } | |
5572 | ||
5573 | ksmbd_debug(SMB, "target name is %s\n", target_name); | |
265fd199 HL |
5574 | rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0); |
5575 | if (rc) { | |
5576 | if (rc != -ENOENT) | |
5577 | goto out; | |
e2f34481 | 5578 | file_present = false; |
265fd199 | 5579 | } else { |
e2f34481 | 5580 | path_put(&path); |
265fd199 | 5581 | } |
e2f34481 NJ |
5582 | |
5583 | if (file_info->ReplaceIfExists) { | |
5584 | if (file_present) { | |
5585 | rc = ksmbd_vfs_remove_file(work, link_name); | |
5586 | if (rc) { | |
5587 | rc = -EINVAL; | |
5588 | ksmbd_debug(SMB, "cannot delete %s\n", | |
070fb21e | 5589 | link_name); |
e2f34481 NJ |
5590 | goto out; |
5591 | } | |
5592 | } | |
5593 | } else { | |
5594 | if (file_present) { | |
5595 | rc = -EEXIST; | |
5596 | ksmbd_debug(SMB, "link already exists\n"); | |
5597 | goto out; | |
5598 | } | |
5599 | } | |
5600 | ||
5601 | rc = ksmbd_vfs_link(work, target_name, link_name); | |
5602 | if (rc) | |
5603 | rc = -EINVAL; | |
5604 | out: | |
5605 | if (!IS_ERR(link_name)) | |
915f570a | 5606 | kfree(link_name); |
e2f34481 NJ |
5607 | kfree(pathname); |
5608 | return rc; | |
5609 | } | |
5610 | ||
9496e268 NJ |
5611 | static int set_file_basic_info(struct ksmbd_file *fp, |
5612 | struct smb2_file_basic_info *file_info, | |
070fb21e | 5613 | struct ksmbd_share_config *share) |
e2f34481 | 5614 | { |
e2f34481 | 5615 | struct iattr attrs; |
e2f34481 NJ |
5616 | struct file *filp; |
5617 | struct inode *inode; | |
abf08576 | 5618 | struct mnt_idmap *idmap; |
4ffd5264 | 5619 | int rc = 0; |
e2f34481 | 5620 | |
7adfd4f6 | 5621 | if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE)) |
e2f34481 NJ |
5622 | return -EACCES; |
5623 | ||
e2f34481 NJ |
5624 | attrs.ia_valid = 0; |
5625 | filp = fp->filp; | |
5626 | inode = file_inode(filp); | |
abf08576 | 5627 | idmap = file_mnt_idmap(filp); |
e2f34481 NJ |
5628 | |
5629 | if (file_info->CreationTime) | |
5630 | fp->create_time = le64_to_cpu(file_info->CreationTime); | |
5631 | ||
5632 | if (file_info->LastAccessTime) { | |
5633 | attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime); | |
5634 | attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
5635 | } | |
5636 | ||
64e78755 NJ |
5637 | attrs.ia_valid |= ATTR_CTIME; |
5638 | if (file_info->ChangeTime) | |
db7fb6fe | 5639 | attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime); |
64e78755 NJ |
5640 | else |
5641 | attrs.ia_ctime = inode->i_ctime; | |
e2f34481 NJ |
5642 | |
5643 | if (file_info->LastWriteTime) { | |
5644 | attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime); | |
5645 | attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
5646 | } | |
5647 | ||
5648 | if (file_info->Attributes) { | |
5649 | if (!S_ISDIR(inode->i_mode) && | |
26a2787d | 5650 | file_info->Attributes & FILE_ATTRIBUTE_DIRECTORY_LE) { |
bde1694a | 5651 | pr_err("can't change a file to a directory\n"); |
e2f34481 NJ |
5652 | return -EINVAL; |
5653 | } | |
5654 | ||
26a2787d | 5655 | if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE)) |
e2f34481 | 5656 | fp->f_ci->m_fattr = file_info->Attributes | |
26a2787d | 5657 | (fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE); |
e2f34481 NJ |
5658 | } |
5659 | ||
5660 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) && | |
5661 | (file_info->CreationTime || file_info->Attributes)) { | |
5662 | struct xattr_dos_attrib da = {0}; | |
5663 | ||
5664 | da.version = 4; | |
5665 | da.itime = fp->itime; | |
5666 | da.create_time = fp->create_time; | |
5667 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
5668 | da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | | |
5669 | XATTR_DOSINFO_ITIME; | |
5670 | ||
4609e1f1 | 5671 | rc = ksmbd_vfs_set_dos_attrib_xattr(idmap, |
af34983e | 5672 | filp->f_path.dentry, &da); |
e2f34481 NJ |
5673 | if (rc) |
5674 | ksmbd_debug(SMB, | |
070fb21e | 5675 | "failed to restore file attribute in EA\n"); |
e2f34481 NJ |
5676 | rc = 0; |
5677 | } | |
5678 | ||
e2f34481 NJ |
5679 | if (attrs.ia_valid) { |
5680 | struct dentry *dentry = filp->f_path.dentry; | |
5681 | struct inode *inode = d_inode(dentry); | |
5682 | ||
5683 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
5684 | return -EACCES; | |
5685 | ||
e2f34481 | 5686 | inode_lock(inode); |
64e78755 NJ |
5687 | inode->i_ctime = attrs.ia_ctime; |
5688 | attrs.ia_valid &= ~ATTR_CTIME; | |
abf08576 | 5689 | rc = notify_change(idmap, dentry, &attrs, NULL); |
e2f34481 NJ |
5690 | inode_unlock(inode); |
5691 | } | |
eb5784f0 | 5692 | return rc; |
e2f34481 NJ |
5693 | } |
5694 | ||
5695 | static int set_file_allocation_info(struct ksmbd_work *work, | |
9496e268 NJ |
5696 | struct ksmbd_file *fp, |
5697 | struct smb2_file_alloc_info *file_alloc_info) | |
e2f34481 NJ |
5698 | { |
5699 | /* | |
5700 | * TODO : It's working fine only when store dos attributes | |
5701 | * is not yes. need to implement a logic which works | |
5702 | * properly with any smb.conf option | |
5703 | */ | |
5704 | ||
e2f34481 NJ |
5705 | loff_t alloc_blks; |
5706 | struct inode *inode; | |
5707 | int rc; | |
5708 | ||
a299669b | 5709 | if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
e2f34481 NJ |
5710 | return -EACCES; |
5711 | ||
e2f34481 NJ |
5712 | alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9; |
5713 | inode = file_inode(fp->filp); | |
5714 | ||
5715 | if (alloc_blks > inode->i_blocks) { | |
e8c06191 NJ |
5716 | smb_break_all_levII_oplock(work, fp, 1); |
5717 | rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, | |
5718 | alloc_blks * 512); | |
e2f34481 | 5719 | if (rc && rc != -EOPNOTSUPP) { |
e8c06191 | 5720 | pr_err("vfs_fallocate is failed : %d\n", rc); |
e2f34481 NJ |
5721 | return rc; |
5722 | } | |
5723 | } else if (alloc_blks < inode->i_blocks) { | |
5724 | loff_t size; | |
5725 | ||
5726 | /* | |
5727 | * Allocation size could be smaller than original one | |
5728 | * which means allocated blocks in file should be | |
5729 | * deallocated. use truncate to cut out it, but inode | |
5730 | * size is also updated with truncate offset. | |
5731 | * inode size is retained by backup inode size. | |
5732 | */ | |
5733 | size = i_size_read(inode); | |
265fd199 | 5734 | rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512); |
e2f34481 | 5735 | if (rc) { |
50f500b7 | 5736 | pr_err("truncate failed!, err %d\n", rc); |
e2f34481 NJ |
5737 | return rc; |
5738 | } | |
5739 | if (size < alloc_blks * 512) | |
5740 | i_size_write(inode, size); | |
5741 | } | |
5742 | return 0; | |
5743 | } | |
5744 | ||
64b39f4a | 5745 | static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
9496e268 | 5746 | struct smb2_file_eof_info *file_eof_info) |
e2f34481 | 5747 | { |
e2f34481 NJ |
5748 | loff_t newsize; |
5749 | struct inode *inode; | |
5750 | int rc; | |
5751 | ||
a299669b | 5752 | if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
e2f34481 NJ |
5753 | return -EACCES; |
5754 | ||
e2f34481 NJ |
5755 | newsize = le64_to_cpu(file_eof_info->EndOfFile); |
5756 | inode = file_inode(fp->filp); | |
5757 | ||
5758 | /* | |
5759 | * If FILE_END_OF_FILE_INFORMATION of set_info_file is called | |
5760 | * on FAT32 shared device, truncate execution time is too long | |
5761 | * and network error could cause from windows client. because | |
5762 | * truncate of some filesystem like FAT32 fill zero data in | |
5763 | * truncated range. | |
5764 | */ | |
5765 | if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) { | |
50f500b7 | 5766 | ksmbd_debug(SMB, "truncated to newsize %lld\n", newsize); |
265fd199 | 5767 | rc = ksmbd_vfs_truncate(work, fp, newsize); |
e2f34481 | 5768 | if (rc) { |
50f500b7 | 5769 | ksmbd_debug(SMB, "truncate failed!, err %d\n", rc); |
e2f34481 NJ |
5770 | if (rc != -EAGAIN) |
5771 | rc = -EBADF; | |
5772 | return rc; | |
5773 | } | |
5774 | } | |
5775 | return 0; | |
5776 | } | |
5777 | ||
64b39f4a | 5778 | static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
9496e268 NJ |
5779 | struct smb2_file_rename_info *rename_info, |
5780 | unsigned int buf_len) | |
e2f34481 | 5781 | { |
4609e1f1 | 5782 | struct mnt_idmap *idmap; |
e2f34481 | 5783 | struct ksmbd_file *parent_fp; |
12202c05 NJ |
5784 | struct dentry *parent; |
5785 | struct dentry *dentry = fp->filp->f_path.dentry; | |
5786 | int ret; | |
e2f34481 NJ |
5787 | |
5788 | if (!(fp->daccess & FILE_DELETE_LE)) { | |
bde1694a | 5789 | pr_err("no right to delete : 0x%x\n", fp->daccess); |
e2f34481 NJ |
5790 | return -EACCES; |
5791 | } | |
5792 | ||
9496e268 NJ |
5793 | if (buf_len < (u64)sizeof(struct smb2_file_rename_info) + |
5794 | le32_to_cpu(rename_info->FileNameLength)) | |
5795 | return -EINVAL; | |
5796 | ||
4609e1f1 | 5797 | idmap = file_mnt_idmap(fp->filp); |
e2f34481 NJ |
5798 | if (ksmbd_stream_fd(fp)) |
5799 | goto next; | |
5800 | ||
12202c05 | 5801 | parent = dget_parent(dentry); |
4609e1f1 | 5802 | ret = ksmbd_vfs_lock_parent(idmap, parent, dentry); |
12202c05 NJ |
5803 | if (ret) { |
5804 | dput(parent); | |
5805 | return ret; | |
5806 | } | |
5807 | ||
5808 | parent_fp = ksmbd_lookup_fd_inode(d_inode(parent)); | |
5809 | inode_unlock(d_inode(parent)); | |
5810 | dput(parent); | |
5811 | ||
e2f34481 NJ |
5812 | if (parent_fp) { |
5813 | if (parent_fp->daccess & FILE_DELETE_LE) { | |
bde1694a | 5814 | pr_err("parent dir is opened with delete access\n"); |
8510a043 | 5815 | ksmbd_fd_put(work, parent_fp); |
e2f34481 NJ |
5816 | return -ESHARE; |
5817 | } | |
8510a043 | 5818 | ksmbd_fd_put(work, parent_fp); |
e2f34481 NJ |
5819 | } |
5820 | next: | |
4609e1f1 | 5821 | return smb2_rename(work, fp, idmap, rename_info, |
af7c39d9 | 5822 | work->conn->local_nls); |
e2f34481 NJ |
5823 | } |
5824 | ||
9496e268 NJ |
5825 | static int set_file_disposition_info(struct ksmbd_file *fp, |
5826 | struct smb2_file_disposition_info *file_info) | |
e2f34481 | 5827 | { |
e2f34481 NJ |
5828 | struct inode *inode; |
5829 | ||
5830 | if (!(fp->daccess & FILE_DELETE_LE)) { | |
bde1694a | 5831 | pr_err("no right to delete : 0x%x\n", fp->daccess); |
e2f34481 NJ |
5832 | return -EACCES; |
5833 | } | |
5834 | ||
5835 | inode = file_inode(fp->filp); | |
e2f34481 NJ |
5836 | if (file_info->DeletePending) { |
5837 | if (S_ISDIR(inode->i_mode) && | |
64b39f4a | 5838 | ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY) |
e2f34481 NJ |
5839 | return -EBUSY; |
5840 | ksmbd_set_inode_pending_delete(fp); | |
5841 | } else { | |
5842 | ksmbd_clear_inode_pending_delete(fp); | |
5843 | } | |
5844 | return 0; | |
5845 | } | |
5846 | ||
9496e268 NJ |
5847 | static int set_file_position_info(struct ksmbd_file *fp, |
5848 | struct smb2_file_pos_info *file_info) | |
e2f34481 | 5849 | { |
e2f34481 | 5850 | loff_t current_byte_offset; |
ee81cae1 | 5851 | unsigned long sector_size; |
e2f34481 NJ |
5852 | struct inode *inode; |
5853 | ||
5854 | inode = file_inode(fp->filp); | |
e2f34481 | 5855 | current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset); |
ee81cae1 | 5856 | sector_size = inode->i_sb->s_blocksize; |
e2f34481 NJ |
5857 | |
5858 | if (current_byte_offset < 0 || | |
64b39f4a NJ |
5859 | (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE && |
5860 | current_byte_offset & (sector_size - 1))) { | |
bde1694a NJ |
5861 | pr_err("CurrentByteOffset is not valid : %llu\n", |
5862 | current_byte_offset); | |
e2f34481 NJ |
5863 | return -EINVAL; |
5864 | } | |
5865 | ||
5866 | fp->filp->f_pos = current_byte_offset; | |
5867 | return 0; | |
5868 | } | |
5869 | ||
9496e268 NJ |
5870 | static int set_file_mode_info(struct ksmbd_file *fp, |
5871 | struct smb2_file_mode_info *file_info) | |
e2f34481 | 5872 | { |
e2f34481 NJ |
5873 | __le32 mode; |
5874 | ||
e2f34481 NJ |
5875 | mode = file_info->Mode; |
5876 | ||
26a2787d | 5877 | if ((mode & ~FILE_MODE_INFO_MASK)) { |
bde1694a | 5878 | pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode)); |
e2f34481 NJ |
5879 | return -EINVAL; |
5880 | } | |
5881 | ||
5882 | /* | |
5883 | * TODO : need to implement consideration for | |
5884 | * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT | |
5885 | */ | |
5886 | ksmbd_vfs_set_fadvise(fp->filp, mode); | |
5887 | fp->coption = mode; | |
5888 | return 0; | |
5889 | } | |
5890 | ||
5891 | /** | |
5892 | * smb2_set_info_file() - handler for smb2 set info command | |
5893 | * @work: smb work containing set info command buffer | |
95fa1ce9 | 5894 | * @fp: ksmbd_file pointer |
4bfd9eed | 5895 | * @req: request buffer pointer |
95fa1ce9 | 5896 | * @share: ksmbd_share_config pointer |
e2f34481 NJ |
5897 | * |
5898 | * Return: 0 on success, otherwise error | |
5899 | * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH | |
5900 | */ | |
64b39f4a | 5901 | static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp, |
9496e268 | 5902 | struct smb2_set_info_req *req, |
070fb21e | 5903 | struct ksmbd_share_config *share) |
e2f34481 | 5904 | { |
9496e268 NJ |
5905 | unsigned int buf_len = le32_to_cpu(req->BufferLength); |
5906 | ||
5907 | switch (req->FileInfoClass) { | |
e2f34481 | 5908 | case FILE_BASIC_INFORMATION: |
9496e268 NJ |
5909 | { |
5910 | if (buf_len < sizeof(struct smb2_file_basic_info)) | |
5911 | return -EINVAL; | |
e2f34481 | 5912 | |
9496e268 NJ |
5913 | return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share); |
5914 | } | |
e2f34481 | 5915 | case FILE_ALLOCATION_INFORMATION: |
9496e268 NJ |
5916 | { |
5917 | if (buf_len < sizeof(struct smb2_file_alloc_info)) | |
5918 | return -EINVAL; | |
e2f34481 | 5919 | |
9496e268 NJ |
5920 | return set_file_allocation_info(work, fp, |
5921 | (struct smb2_file_alloc_info *)req->Buffer); | |
5922 | } | |
e2f34481 | 5923 | case FILE_END_OF_FILE_INFORMATION: |
9496e268 NJ |
5924 | { |
5925 | if (buf_len < sizeof(struct smb2_file_eof_info)) | |
5926 | return -EINVAL; | |
e2f34481 | 5927 | |
9496e268 NJ |
5928 | return set_end_of_file_info(work, fp, |
5929 | (struct smb2_file_eof_info *)req->Buffer); | |
5930 | } | |
e2f34481 | 5931 | case FILE_RENAME_INFORMATION: |
9496e268 | 5932 | { |
64b39f4a | 5933 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 5934 | ksmbd_debug(SMB, |
070fb21e | 5935 | "User does not have write permission\n"); |
e2f34481 NJ |
5936 | return -EACCES; |
5937 | } | |
e2f34481 | 5938 | |
9496e268 NJ |
5939 | if (buf_len < sizeof(struct smb2_file_rename_info)) |
5940 | return -EINVAL; | |
5941 | ||
5942 | return set_rename_info(work, fp, | |
5943 | (struct smb2_file_rename_info *)req->Buffer, | |
5944 | buf_len); | |
5945 | } | |
e2f34481 | 5946 | case FILE_LINK_INFORMATION: |
9496e268 NJ |
5947 | { |
5948 | if (buf_len < sizeof(struct smb2_file_link_info)) | |
5949 | return -EINVAL; | |
5950 | ||
e2f34481 | 5951 | return smb2_create_link(work, work->tcon->share_conf, |
9496e268 NJ |
5952 | (struct smb2_file_link_info *)req->Buffer, |
5953 | buf_len, fp->filp, | |
af7c39d9 | 5954 | work->conn->local_nls); |
9496e268 | 5955 | } |
e2f34481 | 5956 | case FILE_DISPOSITION_INFORMATION: |
9496e268 | 5957 | { |
64b39f4a | 5958 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 5959 | ksmbd_debug(SMB, |
070fb21e | 5960 | "User does not have write permission\n"); |
e2f34481 NJ |
5961 | return -EACCES; |
5962 | } | |
e2f34481 | 5963 | |
9496e268 NJ |
5964 | if (buf_len < sizeof(struct smb2_file_disposition_info)) |
5965 | return -EINVAL; | |
5966 | ||
5967 | return set_file_disposition_info(fp, | |
5968 | (struct smb2_file_disposition_info *)req->Buffer); | |
5969 | } | |
e2f34481 NJ |
5970 | case FILE_FULL_EA_INFORMATION: |
5971 | { | |
5972 | if (!(fp->daccess & FILE_WRITE_EA_LE)) { | |
bde1694a NJ |
5973 | pr_err("Not permitted to write ext attr: 0x%x\n", |
5974 | fp->daccess); | |
e2f34481 NJ |
5975 | return -EACCES; |
5976 | } | |
5977 | ||
9496e268 NJ |
5978 | if (buf_len < sizeof(struct smb2_ea_info)) |
5979 | return -EINVAL; | |
e2f34481 | 5980 | |
9496e268 NJ |
5981 | return smb2_set_ea((struct smb2_ea_info *)req->Buffer, |
5982 | buf_len, &fp->filp->f_path); | |
5983 | } | |
e2f34481 | 5984 | case FILE_POSITION_INFORMATION: |
9496e268 NJ |
5985 | { |
5986 | if (buf_len < sizeof(struct smb2_file_pos_info)) | |
5987 | return -EINVAL; | |
e2f34481 | 5988 | |
9496e268 NJ |
5989 | return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer); |
5990 | } | |
e2f34481 | 5991 | case FILE_MODE_INFORMATION: |
9496e268 NJ |
5992 | { |
5993 | if (buf_len < sizeof(struct smb2_file_mode_info)) | |
5994 | return -EINVAL; | |
5995 | ||
5996 | return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer); | |
5997 | } | |
e2f34481 NJ |
5998 | } |
5999 | ||
9496e268 | 6000 | pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass); |
e2f34481 NJ |
6001 | return -EOPNOTSUPP; |
6002 | } | |
6003 | ||
64b39f4a | 6004 | static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info, |
070fb21e | 6005 | char *buffer, int buf_len) |
e2f34481 NJ |
6006 | { |
6007 | struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer; | |
6008 | ||
6009 | fp->saccess |= FILE_SHARE_DELETE_LE; | |
6010 | ||
ef24c962 | 6011 | return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd, |
e2f34481 NJ |
6012 | buf_len, false); |
6013 | } | |
6014 | ||
6015 | /** | |
6016 | * smb2_set_info() - handler for smb2 set info command handler | |
6017 | * @work: smb work containing set info request buffer | |
6018 | * | |
6019 | * Return: 0 on success, otherwise error | |
6020 | */ | |
6021 | int smb2_set_info(struct ksmbd_work *work) | |
6022 | { | |
6023 | struct smb2_set_info_req *req; | |
cb451720 | 6024 | struct smb2_set_info_rsp *rsp; |
e2f34481 NJ |
6025 | struct ksmbd_file *fp; |
6026 | int rc = 0; | |
6027 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; | |
6028 | ||
6029 | ksmbd_debug(SMB, "Received set info request\n"); | |
6030 | ||
e2f34481 | 6031 | if (work->next_smb2_rcv_hdr_off) { |
8a893315 NJ |
6032 | req = ksmbd_req_buf_next(work); |
6033 | rsp = ksmbd_resp_buf_next(work); | |
2d004c6c | 6034 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 6035 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 6036 | work->compound_fid); |
e2f34481 NJ |
6037 | id = work->compound_fid; |
6038 | pid = work->compound_pfid; | |
6039 | } | |
6040 | } else { | |
cb451720 NJ |
6041 | req = smb2_get_msg(work->request_buf); |
6042 | rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
6043 | } |
6044 | ||
3867369e | 6045 | if (!has_file_id(id)) { |
2d004c6c PA |
6046 | id = req->VolatileFileId; |
6047 | pid = req->PersistentFileId; | |
e2f34481 NJ |
6048 | } |
6049 | ||
6050 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
6051 | if (!fp) { | |
6052 | ksmbd_debug(SMB, "Invalid id for close: %u\n", id); | |
6053 | rc = -ENOENT; | |
6054 | goto err_out; | |
6055 | } | |
6056 | ||
6057 | switch (req->InfoType) { | |
6058 | case SMB2_O_INFO_FILE: | |
6059 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); | |
9496e268 | 6060 | rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf); |
e2f34481 NJ |
6061 | break; |
6062 | case SMB2_O_INFO_SECURITY: | |
6063 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); | |
e70e392f NJ |
6064 | if (ksmbd_override_fsids(work)) { |
6065 | rc = -ENOMEM; | |
6066 | goto err_out; | |
6067 | } | |
e2f34481 | 6068 | rc = smb2_set_info_sec(fp, |
070fb21e NJ |
6069 | le32_to_cpu(req->AdditionalInformation), |
6070 | req->Buffer, | |
6071 | le32_to_cpu(req->BufferLength)); | |
e70e392f | 6072 | ksmbd_revert_fsids(work); |
e2f34481 NJ |
6073 | break; |
6074 | default: | |
6075 | rc = -EOPNOTSUPP; | |
6076 | } | |
6077 | ||
6078 | if (rc < 0) | |
6079 | goto err_out; | |
6080 | ||
6081 | rsp->StructureSize = cpu_to_le16(2); | |
cb451720 | 6082 | inc_rfc1001_len(work->response_buf, 2); |
e2f34481 NJ |
6083 | ksmbd_fd_put(work, fp); |
6084 | return 0; | |
6085 | ||
6086 | err_out: | |
265fd199 | 6087 | if (rc == -EACCES || rc == -EPERM || rc == -EXDEV) |
e2f34481 NJ |
6088 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
6089 | else if (rc == -EINVAL) | |
6090 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6091 | else if (rc == -ESHARE) | |
6092 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6093 | else if (rc == -ENOENT) | |
6094 | rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; | |
6095 | else if (rc == -EBUSY || rc == -ENOTEMPTY) | |
6096 | rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY; | |
6097 | else if (rc == -EAGAIN) | |
6098 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
ff1d5727 | 6099 | else if (rc == -EBADF || rc == -ESTALE) |
e2f34481 NJ |
6100 | rsp->hdr.Status = STATUS_INVALID_HANDLE; |
6101 | else if (rc == -EEXIST) | |
6102 | rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; | |
6103 | else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP) | |
6104 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
6105 | smb2_set_err_rsp(work); | |
6106 | ksmbd_fd_put(work, fp); | |
070fb21e | 6107 | ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc); |
e2f34481 NJ |
6108 | return rc; |
6109 | } | |
6110 | ||
6111 | /** | |
6112 | * smb2_read_pipe() - handler for smb2 read from IPC pipe | |
6113 | * @work: smb work containing read IPC pipe command buffer | |
6114 | * | |
6115 | * Return: 0 on success, otherwise error | |
6116 | */ | |
6117 | static noinline int smb2_read_pipe(struct ksmbd_work *work) | |
6118 | { | |
6119 | int nbytes = 0, err; | |
64b39f4a | 6120 | u64 id; |
e2f34481 | 6121 | struct ksmbd_rpc_command *rpc_resp; |
cb451720 NJ |
6122 | struct smb2_read_req *req = smb2_get_msg(work->request_buf); |
6123 | struct smb2_read_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 6124 | |
2d004c6c | 6125 | id = req->VolatileFileId; |
e2f34481 | 6126 | |
cb451720 | 6127 | inc_rfc1001_len(work->response_buf, 16); |
e2f34481 NJ |
6128 | rpc_resp = ksmbd_rpc_read(work->sess, id); |
6129 | if (rpc_resp) { | |
6130 | if (rpc_resp->flags != KSMBD_RPC_OK) { | |
6131 | err = -EINVAL; | |
6132 | goto out; | |
6133 | } | |
6134 | ||
6135 | work->aux_payload_buf = | |
79f6b11a | 6136 | kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO); |
e2f34481 NJ |
6137 | if (!work->aux_payload_buf) { |
6138 | err = -ENOMEM; | |
6139 | goto out; | |
6140 | } | |
6141 | ||
6142 | memcpy(work->aux_payload_buf, rpc_resp->payload, | |
070fb21e | 6143 | rpc_resp->payload_sz); |
e2f34481 NJ |
6144 | |
6145 | nbytes = rpc_resp->payload_sz; | |
cb451720 | 6146 | work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4; |
e2f34481 | 6147 | work->aux_payload_sz = nbytes; |
79f6b11a | 6148 | kvfree(rpc_resp); |
e2f34481 NJ |
6149 | } |
6150 | ||
6151 | rsp->StructureSize = cpu_to_le16(17); | |
6152 | rsp->DataOffset = 80; | |
6153 | rsp->Reserved = 0; | |
6154 | rsp->DataLength = cpu_to_le32(nbytes); | |
6155 | rsp->DataRemaining = 0; | |
699230f3 | 6156 | rsp->Flags = 0; |
cb451720 | 6157 | inc_rfc1001_len(work->response_buf, nbytes); |
e2f34481 NJ |
6158 | return 0; |
6159 | ||
6160 | out: | |
6161 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
6162 | smb2_set_err_rsp(work); | |
79f6b11a | 6163 | kvfree(rpc_resp); |
e2f34481 NJ |
6164 | return err; |
6165 | } | |
6166 | ||
2fd5dcb1 HL |
6167 | static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work, |
6168 | struct smb2_buffer_desc_v1 *desc, | |
6169 | __le32 Channel, | |
2fd5dcb1 | 6170 | __le16 ChannelInfoLength) |
e2f34481 | 6171 | { |
6d896d3b HL |
6172 | unsigned int i, ch_count; |
6173 | ||
64b39f4a | 6174 | if (work->conn->dialect == SMB30_PROT_ID && |
2fd5dcb1 | 6175 | Channel != SMB2_CHANNEL_RDMA_V1) |
e2f34481 NJ |
6176 | return -EINVAL; |
6177 | ||
6d896d3b HL |
6178 | ch_count = le16_to_cpu(ChannelInfoLength) / sizeof(*desc); |
6179 | if (ksmbd_debug_types & KSMBD_DEBUG_RDMA) { | |
6180 | for (i = 0; i < ch_count; i++) { | |
6181 | pr_info("RDMA r/w request %#x: token %#x, length %#x\n", | |
6182 | i, | |
6183 | le32_to_cpu(desc[i].token), | |
6184 | le32_to_cpu(desc[i].length)); | |
6185 | } | |
6186 | } | |
ee1b0558 | 6187 | if (!ch_count) |
e2f34481 NJ |
6188 | return -EINVAL; |
6189 | ||
6190 | work->need_invalidate_rkey = | |
2fd5dcb1 | 6191 | (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE); |
1807abcf HL |
6192 | if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) |
6193 | work->remote_key = le32_to_cpu(desc->token); | |
2fd5dcb1 HL |
6194 | return 0; |
6195 | } | |
6196 | ||
6197 | static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work, | |
6198 | struct smb2_read_req *req, void *data_buf, | |
6199 | size_t length) | |
6200 | { | |
2fd5dcb1 | 6201 | int err; |
e2f34481 | 6202 | |
64b39f4a | 6203 | err = ksmbd_conn_rdma_write(work->conn, data_buf, length, |
1807abcf HL |
6204 | (struct smb2_buffer_desc_v1 *) |
6205 | ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)), | |
6206 | le16_to_cpu(req->ReadChannelInfoLength)); | |
e2f34481 NJ |
6207 | if (err) |
6208 | return err; | |
6209 | ||
6210 | return length; | |
6211 | } | |
6212 | ||
6213 | /** | |
6214 | * smb2_read() - handler for smb2 read from file | |
6215 | * @work: smb work containing read command buffer | |
6216 | * | |
6217 | * Return: 0 on success, otherwise error | |
6218 | */ | |
6219 | int smb2_read(struct ksmbd_work *work) | |
6220 | { | |
6221 | struct ksmbd_conn *conn = work->conn; | |
6222 | struct smb2_read_req *req; | |
cb451720 | 6223 | struct smb2_read_rsp *rsp; |
2fd5dcb1 | 6224 | struct ksmbd_file *fp = NULL; |
e2f34481 NJ |
6225 | loff_t offset; |
6226 | size_t length, mincount; | |
6227 | ssize_t nbytes = 0, remain_bytes = 0; | |
6228 | int err = 0; | |
7a84399e NJ |
6229 | bool is_rdma_channel = false; |
6230 | unsigned int max_read_size = conn->vals->max_read_size; | |
e2f34481 | 6231 | |
e2f34481 NJ |
6232 | WORK_BUFFERS(work, req, rsp); |
6233 | ||
6234 | if (test_share_config_flag(work->tcon->share_conf, | |
6235 | KSMBD_SHARE_FLAG_PIPE)) { | |
6236 | ksmbd_debug(SMB, "IPC pipe read request\n"); | |
6237 | return smb2_read_pipe(work); | |
6238 | } | |
6239 | ||
2fd5dcb1 HL |
6240 | if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE || |
6241 | req->Channel == SMB2_CHANNEL_RDMA_V1) { | |
7a84399e NJ |
6242 | is_rdma_channel = true; |
6243 | max_read_size = get_smbd_max_read_write_size(); | |
6244 | } | |
6245 | ||
6246 | if (is_rdma_channel == true) { | |
6d896d3b HL |
6247 | unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset); |
6248 | ||
6249 | if (ch_offset < offsetof(struct smb2_read_req, Buffer)) { | |
6250 | err = -EINVAL; | |
6251 | goto out; | |
6252 | } | |
2fd5dcb1 HL |
6253 | err = smb2_set_remote_key_for_rdma(work, |
6254 | (struct smb2_buffer_desc_v1 *) | |
6d896d3b | 6255 | ((char *)req + ch_offset), |
2fd5dcb1 | 6256 | req->Channel, |
2fd5dcb1 HL |
6257 | req->ReadChannelInfoLength); |
6258 | if (err) | |
6259 | goto out; | |
6260 | } | |
6261 | ||
2d004c6c | 6262 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 | 6263 | if (!fp) { |
a4382db9 MM |
6264 | err = -ENOENT; |
6265 | goto out; | |
e2f34481 NJ |
6266 | } |
6267 | ||
6268 | if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { | |
bde1694a | 6269 | pr_err("Not permitted to read : 0x%x\n", fp->daccess); |
e2f34481 NJ |
6270 | err = -EACCES; |
6271 | goto out; | |
6272 | } | |
6273 | ||
6274 | offset = le64_to_cpu(req->Offset); | |
6275 | length = le32_to_cpu(req->Length); | |
6276 | mincount = le32_to_cpu(req->MinimumCount); | |
6277 | ||
7a84399e | 6278 | if (length > max_read_size) { |
e2f34481 | 6279 | ksmbd_debug(SMB, "limiting read size to max size(%u)\n", |
7a84399e | 6280 | max_read_size); |
e2f34481 NJ |
6281 | err = -EINVAL; |
6282 | goto out; | |
6283 | } | |
6284 | ||
369c1634 AV |
6285 | ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n", |
6286 | fp->filp, offset, length); | |
e2f34481 | 6287 | |
c30f4eb8 | 6288 | work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
e2f34481 | 6289 | if (!work->aux_payload_buf) { |
c1ea111f | 6290 | err = -ENOMEM; |
e2f34481 NJ |
6291 | goto out; |
6292 | } | |
6293 | ||
6294 | nbytes = ksmbd_vfs_read(work, fp, length, &offset); | |
6295 | if (nbytes < 0) { | |
6296 | err = nbytes; | |
6297 | goto out; | |
6298 | } | |
6299 | ||
6300 | if ((nbytes == 0 && length != 0) || nbytes < mincount) { | |
c30f4eb8 | 6301 | kvfree(work->aux_payload_buf); |
e5066499 | 6302 | work->aux_payload_buf = NULL; |
e2f34481 NJ |
6303 | rsp->hdr.Status = STATUS_END_OF_FILE; |
6304 | smb2_set_err_rsp(work); | |
6305 | ksmbd_fd_put(work, fp); | |
6306 | return 0; | |
6307 | } | |
6308 | ||
6309 | ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n", | |
070fb21e | 6310 | nbytes, offset, mincount); |
e2f34481 | 6311 | |
7a84399e | 6312 | if (is_rdma_channel == true) { |
e2f34481 NJ |
6313 | /* write data to the client using rdma channel */ |
6314 | remain_bytes = smb2_read_rdma_channel(work, req, | |
070fb21e NJ |
6315 | work->aux_payload_buf, |
6316 | nbytes); | |
c30f4eb8 | 6317 | kvfree(work->aux_payload_buf); |
e5066499 | 6318 | work->aux_payload_buf = NULL; |
e2f34481 NJ |
6319 | |
6320 | nbytes = 0; | |
6321 | if (remain_bytes < 0) { | |
6322 | err = (int)remain_bytes; | |
6323 | goto out; | |
6324 | } | |
6325 | } | |
6326 | ||
6327 | rsp->StructureSize = cpu_to_le16(17); | |
6328 | rsp->DataOffset = 80; | |
6329 | rsp->Reserved = 0; | |
6330 | rsp->DataLength = cpu_to_le32(nbytes); | |
6331 | rsp->DataRemaining = cpu_to_le32(remain_bytes); | |
699230f3 | 6332 | rsp->Flags = 0; |
cb451720 NJ |
6333 | inc_rfc1001_len(work->response_buf, 16); |
6334 | work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4; | |
e2f34481 | 6335 | work->aux_payload_sz = nbytes; |
cb451720 | 6336 | inc_rfc1001_len(work->response_buf, nbytes); |
e2f34481 NJ |
6337 | ksmbd_fd_put(work, fp); |
6338 | return 0; | |
6339 | ||
6340 | out: | |
6341 | if (err) { | |
6342 | if (err == -EISDIR) | |
6343 | rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST; | |
6344 | else if (err == -EAGAIN) | |
6345 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
6346 | else if (err == -ENOENT) | |
6347 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
6348 | else if (err == -EACCES) | |
6349 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
6350 | else if (err == -ESHARE) | |
6351 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6352 | else if (err == -EINVAL) | |
6353 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6354 | else | |
6355 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6356 | ||
6357 | smb2_set_err_rsp(work); | |
6358 | } | |
6359 | ksmbd_fd_put(work, fp); | |
6360 | return err; | |
6361 | } | |
6362 | ||
6363 | /** | |
6364 | * smb2_write_pipe() - handler for smb2 write on IPC pipe | |
6365 | * @work: smb work containing write IPC pipe command buffer | |
6366 | * | |
6367 | * Return: 0 on success, otherwise error | |
6368 | */ | |
6369 | static noinline int smb2_write_pipe(struct ksmbd_work *work) | |
6370 | { | |
cb451720 NJ |
6371 | struct smb2_write_req *req = smb2_get_msg(work->request_buf); |
6372 | struct smb2_write_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 6373 | struct ksmbd_rpc_command *rpc_resp; |
64b39f4a | 6374 | u64 id = 0; |
e2f34481 NJ |
6375 | int err = 0, ret = 0; |
6376 | char *data_buf; | |
6377 | size_t length; | |
6378 | ||
6379 | length = le32_to_cpu(req->Length); | |
2d004c6c | 6380 | id = req->VolatileFileId; |
e2f34481 | 6381 | |
158a66b2 MM |
6382 | if ((u64)le16_to_cpu(req->DataOffset) + length > |
6383 | get_rfc1002_len(work->request_buf)) { | |
6384 | pr_err("invalid write data offset %u, smb_len %u\n", | |
6385 | le16_to_cpu(req->DataOffset), | |
6386 | get_rfc1002_len(work->request_buf)); | |
6387 | err = -EINVAL; | |
6388 | goto out; | |
e2f34481 NJ |
6389 | } |
6390 | ||
158a66b2 MM |
6391 | data_buf = (char *)(((char *)&req->hdr.ProtocolId) + |
6392 | le16_to_cpu(req->DataOffset)); | |
6393 | ||
e2f34481 NJ |
6394 | rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length); |
6395 | if (rpc_resp) { | |
6396 | if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { | |
6397 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
79f6b11a | 6398 | kvfree(rpc_resp); |
e2f34481 NJ |
6399 | smb2_set_err_rsp(work); |
6400 | return -EOPNOTSUPP; | |
6401 | } | |
6402 | if (rpc_resp->flags != KSMBD_RPC_OK) { | |
6403 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6404 | smb2_set_err_rsp(work); | |
79f6b11a | 6405 | kvfree(rpc_resp); |
e2f34481 NJ |
6406 | return ret; |
6407 | } | |
79f6b11a | 6408 | kvfree(rpc_resp); |
e2f34481 NJ |
6409 | } |
6410 | ||
6411 | rsp->StructureSize = cpu_to_le16(17); | |
6412 | rsp->DataOffset = 0; | |
6413 | rsp->Reserved = 0; | |
6414 | rsp->DataLength = cpu_to_le32(length); | |
6415 | rsp->DataRemaining = 0; | |
6416 | rsp->Reserved2 = 0; | |
cb451720 | 6417 | inc_rfc1001_len(work->response_buf, 16); |
e2f34481 NJ |
6418 | return 0; |
6419 | out: | |
6420 | if (err) { | |
6421 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6422 | smb2_set_err_rsp(work); | |
6423 | } | |
6424 | ||
6425 | return err; | |
6426 | } | |
6427 | ||
6428 | static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work, | |
070fb21e NJ |
6429 | struct smb2_write_req *req, |
6430 | struct ksmbd_file *fp, | |
6431 | loff_t offset, size_t length, bool sync) | |
e2f34481 | 6432 | { |
e2f34481 NJ |
6433 | char *data_buf; |
6434 | int ret; | |
6435 | ssize_t nbytes; | |
6436 | ||
79f6b11a | 6437 | data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
e2f34481 NJ |
6438 | if (!data_buf) |
6439 | return -ENOMEM; | |
6440 | ||
6441 | ret = ksmbd_conn_rdma_read(work->conn, data_buf, length, | |
1807abcf HL |
6442 | (struct smb2_buffer_desc_v1 *) |
6443 | ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)), | |
6444 | le16_to_cpu(req->WriteChannelInfoLength)); | |
e2f34481 | 6445 | if (ret < 0) { |
79f6b11a | 6446 | kvfree(data_buf); |
e2f34481 NJ |
6447 | return ret; |
6448 | } | |
6449 | ||
64b39f4a | 6450 | ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes); |
79f6b11a | 6451 | kvfree(data_buf); |
e2f34481 NJ |
6452 | if (ret < 0) |
6453 | return ret; | |
6454 | ||
6455 | return nbytes; | |
6456 | } | |
6457 | ||
6458 | /** | |
6459 | * smb2_write() - handler for smb2 write from file | |
6460 | * @work: smb work containing write command buffer | |
6461 | * | |
6462 | * Return: 0 on success, otherwise error | |
6463 | */ | |
6464 | int smb2_write(struct ksmbd_work *work) | |
6465 | { | |
6466 | struct smb2_write_req *req; | |
cb451720 | 6467 | struct smb2_write_rsp *rsp; |
bcd62a36 | 6468 | struct ksmbd_file *fp = NULL; |
e2f34481 NJ |
6469 | loff_t offset; |
6470 | size_t length; | |
6471 | ssize_t nbytes; | |
6472 | char *data_buf; | |
7a84399e | 6473 | bool writethrough = false, is_rdma_channel = false; |
e2f34481 | 6474 | int err = 0; |
7a84399e | 6475 | unsigned int max_write_size = work->conn->vals->max_write_size; |
e2f34481 | 6476 | |
e2f34481 NJ |
6477 | WORK_BUFFERS(work, req, rsp); |
6478 | ||
64b39f4a | 6479 | if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) { |
e2f34481 NJ |
6480 | ksmbd_debug(SMB, "IPC pipe write request\n"); |
6481 | return smb2_write_pipe(work); | |
6482 | } | |
6483 | ||
7a84399e NJ |
6484 | offset = le64_to_cpu(req->Offset); |
6485 | length = le32_to_cpu(req->Length); | |
6486 | ||
2fd5dcb1 HL |
6487 | if (req->Channel == SMB2_CHANNEL_RDMA_V1 || |
6488 | req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) { | |
7a84399e NJ |
6489 | is_rdma_channel = true; |
6490 | max_write_size = get_smbd_max_read_write_size(); | |
6491 | length = le32_to_cpu(req->RemainingBytes); | |
6492 | } | |
6493 | ||
6494 | if (is_rdma_channel == true) { | |
6d896d3b HL |
6495 | unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset); |
6496 | ||
6497 | if (req->Length != 0 || req->DataOffset != 0 || | |
6498 | ch_offset < offsetof(struct smb2_write_req, Buffer)) { | |
6499 | err = -EINVAL; | |
6500 | goto out; | |
6501 | } | |
2fd5dcb1 HL |
6502 | err = smb2_set_remote_key_for_rdma(work, |
6503 | (struct smb2_buffer_desc_v1 *) | |
6d896d3b | 6504 | ((char *)req + ch_offset), |
2fd5dcb1 | 6505 | req->Channel, |
2fd5dcb1 HL |
6506 | req->WriteChannelInfoLength); |
6507 | if (err) | |
6508 | goto out; | |
6509 | } | |
6510 | ||
e2f34481 NJ |
6511 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
6512 | ksmbd_debug(SMB, "User does not have write permission\n"); | |
6513 | err = -EACCES; | |
6514 | goto out; | |
6515 | } | |
6516 | ||
2d004c6c | 6517 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 | 6518 | if (!fp) { |
a4382db9 MM |
6519 | err = -ENOENT; |
6520 | goto out; | |
e2f34481 NJ |
6521 | } |
6522 | ||
6523 | if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { | |
bde1694a | 6524 | pr_err("Not permitted to write : 0x%x\n", fp->daccess); |
e2f34481 NJ |
6525 | err = -EACCES; |
6526 | goto out; | |
6527 | } | |
6528 | ||
7a84399e | 6529 | if (length > max_write_size) { |
e2f34481 | 6530 | ksmbd_debug(SMB, "limiting write size to max size(%u)\n", |
7a84399e | 6531 | max_write_size); |
e2f34481 NJ |
6532 | err = -EINVAL; |
6533 | goto out; | |
6534 | } | |
6535 | ||
745bbc09 | 6536 | ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags)); |
e2f34481 NJ |
6537 | if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH) |
6538 | writethrough = true; | |
6539 | ||
7a84399e | 6540 | if (is_rdma_channel == false) { |
ac60778b HL |
6541 | if (le16_to_cpu(req->DataOffset) < |
6542 | offsetof(struct smb2_write_req, Buffer)) { | |
158a66b2 MM |
6543 | err = -EINVAL; |
6544 | goto out; | |
e2f34481 | 6545 | } |
ac60778b | 6546 | |
158a66b2 MM |
6547 | data_buf = (char *)(((char *)&req->hdr.ProtocolId) + |
6548 | le16_to_cpu(req->DataOffset)); | |
e2f34481 | 6549 | |
369c1634 AV |
6550 | ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n", |
6551 | fp->filp, offset, length); | |
e2f34481 NJ |
6552 | err = ksmbd_vfs_write(work, fp, data_buf, length, &offset, |
6553 | writethrough, &nbytes); | |
6554 | if (err < 0) | |
6555 | goto out; | |
6556 | } else { | |
6557 | /* read data from the client using rdma channel, and | |
6558 | * write the data. | |
6559 | */ | |
7a84399e | 6560 | nbytes = smb2_write_rdma_channel(work, req, fp, offset, length, |
070fb21e | 6561 | writethrough); |
e2f34481 NJ |
6562 | if (nbytes < 0) { |
6563 | err = (int)nbytes; | |
6564 | goto out; | |
6565 | } | |
6566 | } | |
6567 | ||
6568 | rsp->StructureSize = cpu_to_le16(17); | |
6569 | rsp->DataOffset = 0; | |
6570 | rsp->Reserved = 0; | |
6571 | rsp->DataLength = cpu_to_le32(nbytes); | |
6572 | rsp->DataRemaining = 0; | |
6573 | rsp->Reserved2 = 0; | |
cb451720 | 6574 | inc_rfc1001_len(work->response_buf, 16); |
e2f34481 NJ |
6575 | ksmbd_fd_put(work, fp); |
6576 | return 0; | |
6577 | ||
6578 | out: | |
6579 | if (err == -EAGAIN) | |
6580 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
6581 | else if (err == -ENOSPC || err == -EFBIG) | |
6582 | rsp->hdr.Status = STATUS_DISK_FULL; | |
6583 | else if (err == -ENOENT) | |
6584 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
6585 | else if (err == -EACCES) | |
6586 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
6587 | else if (err == -ESHARE) | |
6588 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6589 | else if (err == -EINVAL) | |
6590 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6591 | else | |
6592 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6593 | ||
6594 | smb2_set_err_rsp(work); | |
6595 | ksmbd_fd_put(work, fp); | |
6596 | return err; | |
6597 | } | |
6598 | ||
6599 | /** | |
6600 | * smb2_flush() - handler for smb2 flush file - fsync | |
6601 | * @work: smb work containing flush command buffer | |
6602 | * | |
6603 | * Return: 0 on success, otherwise error | |
6604 | */ | |
6605 | int smb2_flush(struct ksmbd_work *work) | |
6606 | { | |
6607 | struct smb2_flush_req *req; | |
cb451720 | 6608 | struct smb2_flush_rsp *rsp; |
e2f34481 NJ |
6609 | int err; |
6610 | ||
e2f34481 NJ |
6611 | WORK_BUFFERS(work, req, rsp); |
6612 | ||
2d004c6c | 6613 | ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", req->VolatileFileId); |
e2f34481 | 6614 | |
2d004c6c | 6615 | err = ksmbd_vfs_fsync(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 NJ |
6616 | if (err) |
6617 | goto out; | |
6618 | ||
6619 | rsp->StructureSize = cpu_to_le16(4); | |
6620 | rsp->Reserved = 0; | |
cb451720 | 6621 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
6622 | return 0; |
6623 | ||
6624 | out: | |
6625 | if (err) { | |
6626 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6627 | smb2_set_err_rsp(work); | |
6628 | } | |
6629 | ||
6630 | return err; | |
6631 | } | |
6632 | ||
6633 | /** | |
6634 | * smb2_cancel() - handler for smb2 cancel command | |
6635 | * @work: smb work containing cancel command buffer | |
6636 | * | |
6637 | * Return: 0 on success, otherwise error | |
6638 | */ | |
6639 | int smb2_cancel(struct ksmbd_work *work) | |
6640 | { | |
6641 | struct ksmbd_conn *conn = work->conn; | |
cb451720 | 6642 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 6643 | struct smb2_hdr *chdr; |
edf5f054 | 6644 | struct ksmbd_work *cancel_work = NULL, *iter; |
e2f34481 NJ |
6645 | struct list_head *command_list; |
6646 | ||
6647 | ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n", | |
070fb21e | 6648 | hdr->MessageId, hdr->Flags); |
e2f34481 NJ |
6649 | |
6650 | if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) { | |
6651 | command_list = &conn->async_requests; | |
6652 | ||
6653 | spin_lock(&conn->request_lock); | |
edf5f054 | 6654 | list_for_each_entry(iter, command_list, |
6f3d5eee | 6655 | async_request_entry) { |
edf5f054 | 6656 | chdr = smb2_get_msg(iter->request_buf); |
e2f34481 | 6657 | |
edf5f054 | 6658 | if (iter->async_id != |
64b39f4a | 6659 | le64_to_cpu(hdr->Id.AsyncId)) |
e2f34481 NJ |
6660 | continue; |
6661 | ||
6662 | ksmbd_debug(SMB, | |
070fb21e NJ |
6663 | "smb2 with AsyncId %llu cancelled command = 0x%x\n", |
6664 | le64_to_cpu(hdr->Id.AsyncId), | |
6665 | le16_to_cpu(chdr->Command)); | |
edf5f054 | 6666 | cancel_work = iter; |
e2f34481 NJ |
6667 | break; |
6668 | } | |
6669 | spin_unlock(&conn->request_lock); | |
6670 | } else { | |
6671 | command_list = &conn->requests; | |
6672 | ||
6673 | spin_lock(&conn->request_lock); | |
edf5f054 JK |
6674 | list_for_each_entry(iter, command_list, request_entry) { |
6675 | chdr = smb2_get_msg(iter->request_buf); | |
e2f34481 NJ |
6676 | |
6677 | if (chdr->MessageId != hdr->MessageId || | |
edf5f054 | 6678 | iter == work) |
e2f34481 NJ |
6679 | continue; |
6680 | ||
6681 | ksmbd_debug(SMB, | |
070fb21e NJ |
6682 | "smb2 with mid %llu cancelled command = 0x%x\n", |
6683 | le64_to_cpu(hdr->MessageId), | |
6684 | le16_to_cpu(chdr->Command)); | |
edf5f054 | 6685 | cancel_work = iter; |
e2f34481 NJ |
6686 | break; |
6687 | } | |
6688 | spin_unlock(&conn->request_lock); | |
6689 | } | |
6690 | ||
edf5f054 | 6691 | if (cancel_work) { |
e2f34481 NJ |
6692 | cancel_work->state = KSMBD_WORK_CANCELLED; |
6693 | if (cancel_work->cancel_fn) | |
6694 | cancel_work->cancel_fn(cancel_work->cancel_argv); | |
6695 | } | |
6696 | ||
6697 | /* For SMB2_CANCEL command itself send no response*/ | |
6698 | work->send_no_response = 1; | |
6699 | return 0; | |
6700 | } | |
6701 | ||
6702 | struct file_lock *smb_flock_init(struct file *f) | |
6703 | { | |
6704 | struct file_lock *fl; | |
6705 | ||
6706 | fl = locks_alloc_lock(); | |
6707 | if (!fl) | |
6708 | goto out; | |
6709 | ||
6710 | locks_init_lock(fl); | |
6711 | ||
6712 | fl->fl_owner = f; | |
6713 | fl->fl_pid = current->tgid; | |
6714 | fl->fl_file = f; | |
6715 | fl->fl_flags = FL_POSIX; | |
6716 | fl->fl_ops = NULL; | |
6717 | fl->fl_lmops = NULL; | |
6718 | ||
6719 | out: | |
6720 | return fl; | |
6721 | } | |
6722 | ||
6723 | static int smb2_set_flock_flags(struct file_lock *flock, int flags) | |
6724 | { | |
6725 | int cmd = -EINVAL; | |
6726 | ||
6727 | /* Checking for wrong flag combination during lock request*/ | |
6728 | switch (flags) { | |
6729 | case SMB2_LOCKFLAG_SHARED: | |
6730 | ksmbd_debug(SMB, "received shared request\n"); | |
6731 | cmd = F_SETLKW; | |
6732 | flock->fl_type = F_RDLCK; | |
6733 | flock->fl_flags |= FL_SLEEP; | |
6734 | break; | |
6735 | case SMB2_LOCKFLAG_EXCLUSIVE: | |
6736 | ksmbd_debug(SMB, "received exclusive request\n"); | |
6737 | cmd = F_SETLKW; | |
6738 | flock->fl_type = F_WRLCK; | |
6739 | flock->fl_flags |= FL_SLEEP; | |
6740 | break; | |
64b39f4a | 6741 | case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
e2f34481 | 6742 | ksmbd_debug(SMB, |
070fb21e | 6743 | "received shared & fail immediately request\n"); |
e2f34481 NJ |
6744 | cmd = F_SETLK; |
6745 | flock->fl_type = F_RDLCK; | |
6746 | break; | |
64b39f4a | 6747 | case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
e2f34481 | 6748 | ksmbd_debug(SMB, |
070fb21e | 6749 | "received exclusive & fail immediately request\n"); |
e2f34481 NJ |
6750 | cmd = F_SETLK; |
6751 | flock->fl_type = F_WRLCK; | |
6752 | break; | |
6753 | case SMB2_LOCKFLAG_UNLOCK: | |
6754 | ksmbd_debug(SMB, "received unlock request\n"); | |
6755 | flock->fl_type = F_UNLCK; | |
7ecbe926 | 6756 | cmd = F_SETLK; |
e2f34481 NJ |
6757 | break; |
6758 | } | |
6759 | ||
6760 | return cmd; | |
6761 | } | |
6762 | ||
6763 | static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock, | |
070fb21e NJ |
6764 | unsigned int cmd, int flags, |
6765 | struct list_head *lock_list) | |
e2f34481 NJ |
6766 | { |
6767 | struct ksmbd_lock *lock; | |
6768 | ||
6769 | lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL); | |
6770 | if (!lock) | |
6771 | return NULL; | |
6772 | ||
6773 | lock->cmd = cmd; | |
6774 | lock->fl = flock; | |
6775 | lock->start = flock->fl_start; | |
6776 | lock->end = flock->fl_end; | |
6777 | lock->flags = flags; | |
6778 | if (lock->start == lock->end) | |
6779 | lock->zero_len = 1; | |
d63528eb HL |
6780 | INIT_LIST_HEAD(&lock->clist); |
6781 | INIT_LIST_HEAD(&lock->flist); | |
e2f34481 | 6782 | INIT_LIST_HEAD(&lock->llist); |
e2f34481 NJ |
6783 | list_add_tail(&lock->llist, lock_list); |
6784 | ||
6785 | return lock; | |
6786 | } | |
6787 | ||
6788 | static void smb2_remove_blocked_lock(void **argv) | |
6789 | { | |
6790 | struct file_lock *flock = (struct file_lock *)argv[0]; | |
6791 | ||
6792 | ksmbd_vfs_posix_lock_unblock(flock); | |
6793 | wake_up(&flock->fl_wait); | |
6794 | } | |
6795 | ||
6796 | static inline bool lock_defer_pending(struct file_lock *fl) | |
6797 | { | |
6798 | /* check pending lock waiters */ | |
6799 | return waitqueue_active(&fl->fl_wait); | |
6800 | } | |
6801 | ||
6802 | /** | |
6803 | * smb2_lock() - handler for smb2 file lock command | |
6804 | * @work: smb work containing lock command buffer | |
6805 | * | |
6806 | * Return: 0 on success, otherwise error | |
6807 | */ | |
6808 | int smb2_lock(struct ksmbd_work *work) | |
6809 | { | |
cb451720 NJ |
6810 | struct smb2_lock_req *req = smb2_get_msg(work->request_buf); |
6811 | struct smb2_lock_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
6812 | struct smb2_lock_element *lock_ele; |
6813 | struct ksmbd_file *fp = NULL; | |
6814 | struct file_lock *flock = NULL; | |
6815 | struct file *filp = NULL; | |
6816 | int lock_count; | |
6817 | int flags = 0; | |
6818 | int cmd = 0; | |
6c99dfc4 | 6819 | int err = -EIO, i, rc = 0; |
50bf80a5 | 6820 | u64 lock_start, lock_length; |
d63528eb HL |
6821 | struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2; |
6822 | struct ksmbd_conn *conn; | |
e2f34481 NJ |
6823 | int nolock = 0; |
6824 | LIST_HEAD(lock_list); | |
6825 | LIST_HEAD(rollback_list); | |
6826 | int prior_lock = 0; | |
6827 | ||
6828 | ksmbd_debug(SMB, "Received lock request\n"); | |
2d004c6c | 6829 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 | 6830 | if (!fp) { |
2d004c6c | 6831 | ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", req->VolatileFileId); |
6c99dfc4 | 6832 | err = -ENOENT; |
e2f34481 NJ |
6833 | goto out2; |
6834 | } | |
6835 | ||
6836 | filp = fp->filp; | |
6837 | lock_count = le16_to_cpu(req->LockCount); | |
6838 | lock_ele = req->locks; | |
6839 | ||
6840 | ksmbd_debug(SMB, "lock count is %d\n", lock_count); | |
070fb21e | 6841 | if (!lock_count) { |
6c99dfc4 | 6842 | err = -EINVAL; |
e2f34481 NJ |
6843 | goto out2; |
6844 | } | |
6845 | ||
6846 | for (i = 0; i < lock_count; i++) { | |
6847 | flags = le32_to_cpu(lock_ele[i].Flags); | |
6848 | ||
6849 | flock = smb_flock_init(filp); | |
6c99dfc4 | 6850 | if (!flock) |
e2f34481 | 6851 | goto out; |
e2f34481 NJ |
6852 | |
6853 | cmd = smb2_set_flock_flags(flock, flags); | |
6854 | ||
50bf80a5 NJ |
6855 | lock_start = le64_to_cpu(lock_ele[i].Offset); |
6856 | lock_length = le64_to_cpu(lock_ele[i].Length); | |
6857 | if (lock_start > U64_MAX - lock_length) { | |
bde1694a | 6858 | pr_err("Invalid lock range requested\n"); |
e2f34481 | 6859 | rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
01f6c61b | 6860 | locks_free_lock(flock); |
e2f34481 NJ |
6861 | goto out; |
6862 | } | |
6863 | ||
50bf80a5 NJ |
6864 | if (lock_start > OFFSET_MAX) |
6865 | flock->fl_start = OFFSET_MAX; | |
6866 | else | |
6867 | flock->fl_start = lock_start; | |
6868 | ||
e2f34481 | 6869 | lock_length = le64_to_cpu(lock_ele[i].Length); |
50bf80a5 NJ |
6870 | if (lock_length > OFFSET_MAX - flock->fl_start) |
6871 | lock_length = OFFSET_MAX - flock->fl_start; | |
e2f34481 NJ |
6872 | |
6873 | flock->fl_end = flock->fl_start + lock_length; | |
6874 | ||
6875 | if (flock->fl_end < flock->fl_start) { | |
6876 | ksmbd_debug(SMB, | |
070fb21e NJ |
6877 | "the end offset(%llx) is smaller than the start offset(%llx)\n", |
6878 | flock->fl_end, flock->fl_start); | |
e2f34481 | 6879 | rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
01f6c61b | 6880 | locks_free_lock(flock); |
e2f34481 NJ |
6881 | goto out; |
6882 | } | |
6883 | ||
6884 | /* Check conflict locks in one request */ | |
6885 | list_for_each_entry(cmp_lock, &lock_list, llist) { | |
6886 | if (cmp_lock->fl->fl_start <= flock->fl_start && | |
64b39f4a | 6887 | cmp_lock->fl->fl_end >= flock->fl_end) { |
e2f34481 | 6888 | if (cmp_lock->fl->fl_type != F_UNLCK && |
64b39f4a | 6889 | flock->fl_type != F_UNLCK) { |
bde1694a | 6890 | pr_err("conflict two locks in one request\n"); |
6c99dfc4 | 6891 | err = -EINVAL; |
01f6c61b | 6892 | locks_free_lock(flock); |
e2f34481 NJ |
6893 | goto out; |
6894 | } | |
6895 | } | |
6896 | } | |
6897 | ||
6898 | smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list); | |
6899 | if (!smb_lock) { | |
6c99dfc4 | 6900 | err = -EINVAL; |
01f6c61b | 6901 | locks_free_lock(flock); |
e2f34481 NJ |
6902 | goto out; |
6903 | } | |
6904 | } | |
6905 | ||
6906 | list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { | |
6907 | if (smb_lock->cmd < 0) { | |
6c99dfc4 | 6908 | err = -EINVAL; |
e2f34481 NJ |
6909 | goto out; |
6910 | } | |
6911 | ||
6912 | if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) { | |
6c99dfc4 | 6913 | err = -EINVAL; |
e2f34481 NJ |
6914 | goto out; |
6915 | } | |
6916 | ||
64b39f4a NJ |
6917 | if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) && |
6918 | smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) || | |
6919 | (prior_lock == SMB2_LOCKFLAG_UNLOCK && | |
6920 | !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) { | |
6c99dfc4 | 6921 | err = -EINVAL; |
e2f34481 NJ |
6922 | goto out; |
6923 | } | |
6924 | ||
6925 | prior_lock = smb_lock->flags; | |
6926 | ||
6927 | if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) && | |
64b39f4a | 6928 | !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY)) |
d63528eb | 6929 | goto no_check_cl; |
e2f34481 NJ |
6930 | |
6931 | nolock = 1; | |
d63528eb HL |
6932 | /* check locks in connection list */ |
6933 | read_lock(&conn_list_lock); | |
6934 | list_for_each_entry(conn, &conn_list, conns_list) { | |
6935 | spin_lock(&conn->llist_lock); | |
6936 | list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) { | |
6937 | if (file_inode(cmp_lock->fl->fl_file) != | |
6938 | file_inode(smb_lock->fl->fl_file)) | |
6939 | continue; | |
e2f34481 | 6940 | |
d63528eb HL |
6941 | if (smb_lock->fl->fl_type == F_UNLCK) { |
6942 | if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file && | |
6943 | cmp_lock->start == smb_lock->start && | |
6944 | cmp_lock->end == smb_lock->end && | |
6945 | !lock_defer_pending(cmp_lock->fl)) { | |
6946 | nolock = 0; | |
6947 | list_del(&cmp_lock->flist); | |
6948 | list_del(&cmp_lock->clist); | |
6949 | spin_unlock(&conn->llist_lock); | |
6950 | read_unlock(&conn_list_lock); | |
6951 | ||
6952 | locks_free_lock(cmp_lock->fl); | |
6953 | kfree(cmp_lock); | |
6954 | goto out_check_cl; | |
6955 | } | |
6956 | continue; | |
e2f34481 | 6957 | } |
e2f34481 | 6958 | |
d63528eb HL |
6959 | if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) { |
6960 | if (smb_lock->flags & SMB2_LOCKFLAG_SHARED) | |
6961 | continue; | |
6962 | } else { | |
6963 | if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED) | |
6964 | continue; | |
6965 | } | |
e2f34481 | 6966 | |
d63528eb HL |
6967 | /* check zero byte lock range */ |
6968 | if (cmp_lock->zero_len && !smb_lock->zero_len && | |
6969 | cmp_lock->start > smb_lock->start && | |
6970 | cmp_lock->start < smb_lock->end) { | |
6971 | spin_unlock(&conn->llist_lock); | |
6972 | read_unlock(&conn_list_lock); | |
6973 | pr_err("previous lock conflict with zero byte lock range\n"); | |
6c99dfc4 | 6974 | goto out; |
d63528eb | 6975 | } |
e2f34481 | 6976 | |
d63528eb HL |
6977 | if (smb_lock->zero_len && !cmp_lock->zero_len && |
6978 | smb_lock->start > cmp_lock->start && | |
6979 | smb_lock->start < cmp_lock->end) { | |
6980 | spin_unlock(&conn->llist_lock); | |
6981 | read_unlock(&conn_list_lock); | |
6982 | pr_err("current lock conflict with zero byte lock range\n"); | |
6c99dfc4 | 6983 | goto out; |
d63528eb | 6984 | } |
e2f34481 | 6985 | |
d63528eb HL |
6986 | if (((cmp_lock->start <= smb_lock->start && |
6987 | cmp_lock->end > smb_lock->start) || | |
6988 | (cmp_lock->start < smb_lock->end && | |
6989 | cmp_lock->end >= smb_lock->end)) && | |
6990 | !cmp_lock->zero_len && !smb_lock->zero_len) { | |
6991 | spin_unlock(&conn->llist_lock); | |
6992 | read_unlock(&conn_list_lock); | |
6993 | pr_err("Not allow lock operation on exclusive lock range\n"); | |
d63528eb HL |
6994 | goto out; |
6995 | } | |
e2f34481 | 6996 | } |
d63528eb | 6997 | spin_unlock(&conn->llist_lock); |
e2f34481 | 6998 | } |
d63528eb HL |
6999 | read_unlock(&conn_list_lock); |
7000 | out_check_cl: | |
e2f34481 | 7001 | if (smb_lock->fl->fl_type == F_UNLCK && nolock) { |
bde1694a | 7002 | pr_err("Try to unlock nolocked range\n"); |
e2f34481 NJ |
7003 | rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED; |
7004 | goto out; | |
7005 | } | |
7006 | ||
d63528eb | 7007 | no_check_cl: |
e2f34481 NJ |
7008 | if (smb_lock->zero_len) { |
7009 | err = 0; | |
7010 | goto skip; | |
7011 | } | |
7012 | ||
7013 | flock = smb_lock->fl; | |
7014 | list_del(&smb_lock->llist); | |
7015 | retry: | |
6c99dfc4 | 7016 | rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL); |
e2f34481 NJ |
7017 | skip: |
7018 | if (flags & SMB2_LOCKFLAG_UNLOCK) { | |
6c99dfc4 | 7019 | if (!rc) { |
e2f34481 | 7020 | ksmbd_debug(SMB, "File unlocked\n"); |
6c99dfc4 | 7021 | } else if (rc == -ENOENT) { |
e2f34481 NJ |
7022 | rsp->hdr.Status = STATUS_NOT_LOCKED; |
7023 | goto out; | |
7024 | } | |
7025 | locks_free_lock(flock); | |
7026 | kfree(smb_lock); | |
7027 | } else { | |
6c99dfc4 | 7028 | if (rc == FILE_LOCK_DEFERRED) { |
e2f34481 NJ |
7029 | void **argv; |
7030 | ||
7031 | ksmbd_debug(SMB, | |
070fb21e | 7032 | "would have to wait for getting lock\n"); |
d63528eb HL |
7033 | spin_lock(&work->conn->llist_lock); |
7034 | list_add_tail(&smb_lock->clist, | |
7035 | &work->conn->lock_list); | |
7036 | spin_unlock(&work->conn->llist_lock); | |
e2f34481 NJ |
7037 | list_add(&smb_lock->llist, &rollback_list); |
7038 | ||
7039 | argv = kmalloc(sizeof(void *), GFP_KERNEL); | |
7040 | if (!argv) { | |
7041 | err = -ENOMEM; | |
7042 | goto out; | |
7043 | } | |
7044 | argv[0] = flock; | |
7045 | ||
6c99dfc4 NJ |
7046 | rc = setup_async_work(work, |
7047 | smb2_remove_blocked_lock, | |
7048 | argv); | |
7049 | if (rc) { | |
7050 | err = -ENOMEM; | |
e2f34481 NJ |
7051 | goto out; |
7052 | } | |
7053 | spin_lock(&fp->f_lock); | |
7054 | list_add(&work->fp_entry, &fp->blocked_works); | |
7055 | spin_unlock(&fp->f_lock); | |
7056 | ||
7057 | smb2_send_interim_resp(work, STATUS_PENDING); | |
7058 | ||
45a64e8b | 7059 | ksmbd_vfs_posix_lock_wait(flock); |
e2f34481 | 7060 | |
d4075abb | 7061 | if (work->state != KSMBD_WORK_ACTIVE) { |
e2f34481 | 7062 | list_del(&smb_lock->llist); |
d63528eb HL |
7063 | spin_lock(&work->conn->llist_lock); |
7064 | list_del(&smb_lock->clist); | |
7065 | spin_unlock(&work->conn->llist_lock); | |
e2f34481 NJ |
7066 | locks_free_lock(flock); |
7067 | ||
d4075abb | 7068 | if (work->state == KSMBD_WORK_CANCELLED) { |
e2f34481 NJ |
7069 | spin_lock(&fp->f_lock); |
7070 | list_del(&work->fp_entry); | |
7071 | spin_unlock(&fp->f_lock); | |
7072 | rsp->hdr.Status = | |
7073 | STATUS_CANCELLED; | |
7074 | kfree(smb_lock); | |
7075 | smb2_send_interim_resp(work, | |
070fb21e | 7076 | STATUS_CANCELLED); |
e2f34481 NJ |
7077 | work->send_no_response = 1; |
7078 | goto out; | |
7079 | } | |
7080 | init_smb2_rsp_hdr(work); | |
7081 | smb2_set_err_rsp(work); | |
7082 | rsp->hdr.Status = | |
7083 | STATUS_RANGE_NOT_LOCKED; | |
7084 | kfree(smb_lock); | |
7085 | goto out2; | |
7086 | } | |
7087 | ||
7088 | list_del(&smb_lock->llist); | |
d63528eb HL |
7089 | spin_lock(&work->conn->llist_lock); |
7090 | list_del(&smb_lock->clist); | |
7091 | spin_unlock(&work->conn->llist_lock); | |
7092 | ||
e2f34481 NJ |
7093 | spin_lock(&fp->f_lock); |
7094 | list_del(&work->fp_entry); | |
7095 | spin_unlock(&fp->f_lock); | |
7096 | goto retry; | |
6c99dfc4 | 7097 | } else if (!rc) { |
d63528eb HL |
7098 | spin_lock(&work->conn->llist_lock); |
7099 | list_add_tail(&smb_lock->clist, | |
7100 | &work->conn->lock_list); | |
7101 | list_add_tail(&smb_lock->flist, | |
7102 | &fp->lock_list); | |
7103 | spin_unlock(&work->conn->llist_lock); | |
e2f34481 NJ |
7104 | list_add(&smb_lock->llist, &rollback_list); |
7105 | ksmbd_debug(SMB, "successful in taking lock\n"); | |
7106 | } else { | |
e2f34481 NJ |
7107 | goto out; |
7108 | } | |
7109 | } | |
7110 | } | |
7111 | ||
7112 | if (atomic_read(&fp->f_ci->op_count) > 1) | |
7113 | smb_break_all_oplock(work, fp); | |
7114 | ||
7115 | rsp->StructureSize = cpu_to_le16(4); | |
7116 | ksmbd_debug(SMB, "successful in taking lock\n"); | |
7117 | rsp->hdr.Status = STATUS_SUCCESS; | |
7118 | rsp->Reserved = 0; | |
cb451720 | 7119 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 | 7120 | ksmbd_fd_put(work, fp); |
96ad4ec5 | 7121 | return 0; |
e2f34481 NJ |
7122 | |
7123 | out: | |
7124 | list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { | |
7125 | locks_free_lock(smb_lock->fl); | |
7126 | list_del(&smb_lock->llist); | |
7127 | kfree(smb_lock); | |
7128 | } | |
7129 | ||
7130 | list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) { | |
7131 | struct file_lock *rlock = NULL; | |
7132 | ||
7133 | rlock = smb_flock_init(filp); | |
7134 | rlock->fl_type = F_UNLCK; | |
7135 | rlock->fl_start = smb_lock->start; | |
7136 | rlock->fl_end = smb_lock->end; | |
7137 | ||
7ecbe926 | 7138 | rc = vfs_lock_file(filp, F_SETLK, rlock, NULL); |
96ad4ec5 NJ |
7139 | if (rc) |
7140 | pr_err("rollback unlock fail : %d\n", rc); | |
d63528eb | 7141 | |
e2f34481 | 7142 | list_del(&smb_lock->llist); |
d63528eb HL |
7143 | spin_lock(&work->conn->llist_lock); |
7144 | if (!list_empty(&smb_lock->flist)) | |
7145 | list_del(&smb_lock->flist); | |
7146 | list_del(&smb_lock->clist); | |
7147 | spin_unlock(&work->conn->llist_lock); | |
7148 | ||
e2f34481 NJ |
7149 | locks_free_lock(smb_lock->fl); |
7150 | locks_free_lock(rlock); | |
7151 | kfree(smb_lock); | |
7152 | } | |
7153 | out2: | |
6c99dfc4 NJ |
7154 | ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err); |
7155 | ||
7156 | if (!rsp->hdr.Status) { | |
7157 | if (err == -EINVAL) | |
7158 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7159 | else if (err == -ENOMEM) | |
7160 | rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; | |
7161 | else if (err == -ENOENT) | |
7162 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
7163 | else | |
7164 | rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED; | |
7165 | } | |
7166 | ||
e2f34481 NJ |
7167 | smb2_set_err_rsp(work); |
7168 | ksmbd_fd_put(work, fp); | |
96ad4ec5 | 7169 | return err; |
e2f34481 NJ |
7170 | } |
7171 | ||
f7db8fd0 NJ |
7172 | static int fsctl_copychunk(struct ksmbd_work *work, |
7173 | struct copychunk_ioctl_req *ci_req, | |
7174 | unsigned int cnt_code, | |
7175 | unsigned int input_count, | |
7176 | unsigned long long volatile_id, | |
7177 | unsigned long long persistent_id, | |
070fb21e | 7178 | struct smb2_ioctl_rsp *rsp) |
e2f34481 | 7179 | { |
e2f34481 NJ |
7180 | struct copychunk_ioctl_rsp *ci_rsp; |
7181 | struct ksmbd_file *src_fp = NULL, *dst_fp = NULL; | |
7182 | struct srv_copychunk *chunks; | |
7183 | unsigned int i, chunk_count, chunk_count_written = 0; | |
7184 | unsigned int chunk_size_written = 0; | |
7185 | loff_t total_size_written = 0; | |
f7db8fd0 | 7186 | int ret = 0; |
e2f34481 | 7187 | |
e2f34481 NJ |
7188 | ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0]; |
7189 | ||
2d004c6c PA |
7190 | rsp->VolatileFileId = volatile_id; |
7191 | rsp->PersistentFileId = persistent_id; | |
64b39f4a NJ |
7192 | ci_rsp->ChunksWritten = |
7193 | cpu_to_le32(ksmbd_server_side_copy_max_chunk_count()); | |
7194 | ci_rsp->ChunkBytesWritten = | |
7195 | cpu_to_le32(ksmbd_server_side_copy_max_chunk_size()); | |
7196 | ci_rsp->TotalBytesWritten = | |
7197 | cpu_to_le32(ksmbd_server_side_copy_max_total_size()); | |
e2f34481 NJ |
7198 | |
7199 | chunks = (struct srv_copychunk *)&ci_req->Chunks[0]; | |
7200 | chunk_count = le32_to_cpu(ci_req->ChunkCount); | |
f7db8fd0 NJ |
7201 | if (chunk_count == 0) |
7202 | goto out; | |
e2f34481 NJ |
7203 | total_size_written = 0; |
7204 | ||
7205 | /* verify the SRV_COPYCHUNK_COPY packet */ | |
7206 | if (chunk_count > ksmbd_server_side_copy_max_chunk_count() || | |
f7db8fd0 | 7207 | input_count < offsetof(struct copychunk_ioctl_req, Chunks) + |
64b39f4a | 7208 | chunk_count * sizeof(struct srv_copychunk)) { |
e2f34481 NJ |
7209 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
7210 | return -EINVAL; | |
7211 | } | |
7212 | ||
7213 | for (i = 0; i < chunk_count; i++) { | |
7214 | if (le32_to_cpu(chunks[i].Length) == 0 || | |
64b39f4a | 7215 | le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size()) |
e2f34481 NJ |
7216 | break; |
7217 | total_size_written += le32_to_cpu(chunks[i].Length); | |
7218 | } | |
64b39f4a NJ |
7219 | |
7220 | if (i < chunk_count || | |
7221 | total_size_written > ksmbd_server_side_copy_max_total_size()) { | |
e2f34481 NJ |
7222 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
7223 | return -EINVAL; | |
7224 | } | |
7225 | ||
7226 | src_fp = ksmbd_lookup_foreign_fd(work, | |
070fb21e | 7227 | le64_to_cpu(ci_req->ResumeKey[0])); |
f7db8fd0 | 7228 | dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id); |
e2f34481 | 7229 | ret = -EINVAL; |
64b39f4a NJ |
7230 | if (!src_fp || |
7231 | src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) { | |
e2f34481 NJ |
7232 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; |
7233 | goto out; | |
7234 | } | |
64b39f4a | 7235 | |
e2f34481 NJ |
7236 | if (!dst_fp) { |
7237 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
7238 | goto out; | |
7239 | } | |
7240 | ||
7241 | /* | |
7242 | * FILE_READ_DATA should only be included in | |
7243 | * the FSCTL_COPYCHUNK case | |
7244 | */ | |
070fb21e NJ |
7245 | if (cnt_code == FSCTL_COPYCHUNK && |
7246 | !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) { | |
e2f34481 NJ |
7247 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
7248 | goto out; | |
7249 | } | |
7250 | ||
7251 | ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp, | |
070fb21e NJ |
7252 | chunks, chunk_count, |
7253 | &chunk_count_written, | |
7254 | &chunk_size_written, | |
7255 | &total_size_written); | |
e2f34481 NJ |
7256 | if (ret < 0) { |
7257 | if (ret == -EACCES) | |
7258 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
7259 | if (ret == -EAGAIN) | |
7260 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
7261 | else if (ret == -EBADF) | |
7262 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
7263 | else if (ret == -EFBIG || ret == -ENOSPC) | |
7264 | rsp->hdr.Status = STATUS_DISK_FULL; | |
7265 | else if (ret == -EINVAL) | |
7266 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7267 | else if (ret == -EISDIR) | |
7268 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; | |
7269 | else if (ret == -E2BIG) | |
7270 | rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE; | |
7271 | else | |
7272 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
7273 | } | |
7274 | ||
7275 | ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written); | |
7276 | ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written); | |
7277 | ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written); | |
7278 | out: | |
7279 | ksmbd_fd_put(work, src_fp); | |
7280 | ksmbd_fd_put(work, dst_fp); | |
7281 | return ret; | |
7282 | } | |
7283 | ||
7284 | static __be32 idev_ipv4_address(struct in_device *idev) | |
7285 | { | |
7286 | __be32 addr = 0; | |
7287 | ||
7288 | struct in_ifaddr *ifa; | |
7289 | ||
7290 | rcu_read_lock(); | |
7291 | in_dev_for_each_ifa_rcu(ifa, idev) { | |
7292 | if (ifa->ifa_flags & IFA_F_SECONDARY) | |
7293 | continue; | |
7294 | ||
7295 | addr = ifa->ifa_address; | |
7296 | break; | |
7297 | } | |
7298 | rcu_read_unlock(); | |
7299 | return addr; | |
7300 | } | |
7301 | ||
7302 | static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn, | |
f7db8fd0 NJ |
7303 | struct smb2_ioctl_rsp *rsp, |
7304 | unsigned int out_buf_len) | |
e2f34481 NJ |
7305 | { |
7306 | struct network_interface_info_ioctl_rsp *nii_rsp = NULL; | |
7307 | int nbytes = 0; | |
7308 | struct net_device *netdev; | |
7309 | struct sockaddr_storage_rsp *sockaddr_storage; | |
7310 | unsigned int flags; | |
7311 | unsigned long long speed; | |
7312 | ||
7313 | rtnl_lock(); | |
7314 | for_each_netdev(&init_net, netdev) { | |
71cd9cb6 | 7315 | bool ipv4_set = false; |
f7db8fd0 | 7316 | |
e2f34481 NJ |
7317 | if (netdev->type == ARPHRD_LOOPBACK) |
7318 | continue; | |
7319 | ||
7320 | flags = dev_get_flags(netdev); | |
7321 | if (!(flags & IFF_RUNNING)) | |
7322 | continue; | |
71cd9cb6 NJ |
7323 | ipv6_retry: |
7324 | if (out_buf_len < | |
7325 | nbytes + sizeof(struct network_interface_info_ioctl_rsp)) { | |
7326 | rtnl_unlock(); | |
7327 | return -ENOSPC; | |
7328 | } | |
e2f34481 NJ |
7329 | |
7330 | nii_rsp = (struct network_interface_info_ioctl_rsp *) | |
7331 | &rsp->Buffer[nbytes]; | |
7332 | nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex); | |
7333 | ||
03d8d4f1 | 7334 | nii_rsp->Capability = 0; |
a58b45a4 NJ |
7335 | if (netdev->real_num_tx_queues > 1) |
7336 | nii_rsp->Capability |= cpu_to_le32(RSS_CAPABLE); | |
03d8d4f1 HL |
7337 | if (ksmbd_rdma_capable_netdev(netdev)) |
7338 | nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE); | |
e2f34481 NJ |
7339 | |
7340 | nii_rsp->Next = cpu_to_le32(152); | |
7341 | nii_rsp->Reserved = 0; | |
7342 | ||
7343 | if (netdev->ethtool_ops->get_link_ksettings) { | |
7344 | struct ethtool_link_ksettings cmd; | |
7345 | ||
7346 | netdev->ethtool_ops->get_link_ksettings(netdev, &cmd); | |
7347 | speed = cmd.base.speed; | |
7348 | } else { | |
d475866e PF |
7349 | ksmbd_debug(SMB, "%s %s\n", netdev->name, |
7350 | "speed is unknown, defaulting to 1Gb/sec"); | |
e2f34481 NJ |
7351 | speed = SPEED_1000; |
7352 | } | |
7353 | ||
7354 | speed *= 1000000; | |
7355 | nii_rsp->LinkSpeed = cpu_to_le64(speed); | |
7356 | ||
7357 | sockaddr_storage = (struct sockaddr_storage_rsp *) | |
7358 | nii_rsp->SockAddr_Storage; | |
7359 | memset(sockaddr_storage, 0, 128); | |
7360 | ||
71cd9cb6 | 7361 | if (!ipv4_set) { |
e2f34481 NJ |
7362 | struct in_device *idev; |
7363 | ||
7364 | sockaddr_storage->Family = cpu_to_le16(INTERNETWORK); | |
7365 | sockaddr_storage->addr4.Port = 0; | |
7366 | ||
7367 | idev = __in_dev_get_rtnl(netdev); | |
7368 | if (!idev) | |
7369 | continue; | |
7370 | sockaddr_storage->addr4.IPv4address = | |
7371 | idev_ipv4_address(idev); | |
71cd9cb6 NJ |
7372 | nbytes += sizeof(struct network_interface_info_ioctl_rsp); |
7373 | ipv4_set = true; | |
7374 | goto ipv6_retry; | |
e2f34481 NJ |
7375 | } else { |
7376 | struct inet6_dev *idev6; | |
7377 | struct inet6_ifaddr *ifa; | |
7378 | __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address; | |
7379 | ||
7380 | sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6); | |
7381 | sockaddr_storage->addr6.Port = 0; | |
7382 | sockaddr_storage->addr6.FlowInfo = 0; | |
7383 | ||
7384 | idev6 = __in6_dev_get(netdev); | |
7385 | if (!idev6) | |
7386 | continue; | |
7387 | ||
7388 | list_for_each_entry(ifa, &idev6->addr_list, if_list) { | |
7389 | if (ifa->flags & (IFA_F_TENTATIVE | | |
7390 | IFA_F_DEPRECATED)) | |
7391 | continue; | |
7392 | memcpy(ipv6_addr, ifa->addr.s6_addr, 16); | |
7393 | break; | |
7394 | } | |
7395 | sockaddr_storage->addr6.ScopeId = 0; | |
71cd9cb6 | 7396 | nbytes += sizeof(struct network_interface_info_ioctl_rsp); |
e2f34481 | 7397 | } |
e2f34481 NJ |
7398 | } |
7399 | rtnl_unlock(); | |
7400 | ||
7401 | /* zero if this is last one */ | |
7402 | if (nii_rsp) | |
7403 | nii_rsp->Next = 0; | |
7404 | ||
2d004c6c PA |
7405 | rsp->PersistentFileId = SMB2_NO_FID; |
7406 | rsp->VolatileFileId = SMB2_NO_FID; | |
e2f34481 NJ |
7407 | return nbytes; |
7408 | } | |
7409 | ||
e2f34481 | 7410 | static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn, |
070fb21e | 7411 | struct validate_negotiate_info_req *neg_req, |
f7db8fd0 NJ |
7412 | struct validate_negotiate_info_rsp *neg_rsp, |
7413 | unsigned int in_buf_len) | |
e2f34481 NJ |
7414 | { |
7415 | int ret = 0; | |
7416 | int dialect; | |
7417 | ||
78f1688a | 7418 | if (in_buf_len < offsetof(struct validate_negotiate_info_req, Dialects) + |
f7db8fd0 NJ |
7419 | le16_to_cpu(neg_req->DialectCount) * sizeof(__le16)) |
7420 | return -EINVAL; | |
7421 | ||
e2f34481 | 7422 | dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects, |
070fb21e | 7423 | neg_req->DialectCount); |
e2f34481 NJ |
7424 | if (dialect == BAD_PROT_ID || dialect != conn->dialect) { |
7425 | ret = -EINVAL; | |
7426 | goto err_out; | |
7427 | } | |
7428 | ||
7429 | if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) { | |
7430 | ret = -EINVAL; | |
7431 | goto err_out; | |
7432 | } | |
7433 | ||
7434 | if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) { | |
7435 | ret = -EINVAL; | |
7436 | goto err_out; | |
7437 | } | |
7438 | ||
7439 | if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) { | |
7440 | ret = -EINVAL; | |
7441 | goto err_out; | |
7442 | } | |
7443 | ||
7444 | neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
7445 | memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE); | |
7446 | neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode); | |
7447 | neg_rsp->Dialect = cpu_to_le16(conn->dialect); | |
7448 | err_out: | |
7449 | return ret; | |
7450 | } | |
7451 | ||
64b39f4a | 7452 | static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id, |
070fb21e NJ |
7453 | struct file_allocated_range_buffer *qar_req, |
7454 | struct file_allocated_range_buffer *qar_rsp, | |
f7db8fd0 | 7455 | unsigned int in_count, unsigned int *out_count) |
e2f34481 NJ |
7456 | { |
7457 | struct ksmbd_file *fp; | |
7458 | loff_t start, length; | |
7459 | int ret = 0; | |
7460 | ||
7461 | *out_count = 0; | |
7462 | if (in_count == 0) | |
7463 | return -EINVAL; | |
7464 | ||
7465 | fp = ksmbd_lookup_fd_fast(work, id); | |
7466 | if (!fp) | |
7467 | return -ENOENT; | |
7468 | ||
7469 | start = le64_to_cpu(qar_req->file_offset); | |
7470 | length = le64_to_cpu(qar_req->length); | |
7471 | ||
7472 | ret = ksmbd_vfs_fqar_lseek(fp, start, length, | |
070fb21e | 7473 | qar_rsp, in_count, out_count); |
e2f34481 NJ |
7474 | if (ret && ret != -E2BIG) |
7475 | *out_count = 0; | |
7476 | ||
7477 | ksmbd_fd_put(work, fp); | |
7478 | return ret; | |
7479 | } | |
7480 | ||
64b39f4a | 7481 | static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id, |
f7db8fd0 NJ |
7482 | unsigned int out_buf_len, |
7483 | struct smb2_ioctl_req *req, | |
070fb21e | 7484 | struct smb2_ioctl_rsp *rsp) |
e2f34481 NJ |
7485 | { |
7486 | struct ksmbd_rpc_command *rpc_resp; | |
7487 | char *data_buf = (char *)&req->Buffer[0]; | |
7488 | int nbytes = 0; | |
7489 | ||
64b39f4a | 7490 | rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf, |
070fb21e | 7491 | le32_to_cpu(req->InputCount)); |
e2f34481 NJ |
7492 | if (rpc_resp) { |
7493 | if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) { | |
7494 | /* | |
7495 | * set STATUS_SOME_NOT_MAPPED response | |
7496 | * for unknown domain sid. | |
7497 | */ | |
7498 | rsp->hdr.Status = STATUS_SOME_NOT_MAPPED; | |
7499 | } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { | |
7500 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
7501 | goto out; | |
7502 | } else if (rpc_resp->flags != KSMBD_RPC_OK) { | |
7503 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7504 | goto out; | |
7505 | } | |
7506 | ||
7507 | nbytes = rpc_resp->payload_sz; | |
7508 | if (rpc_resp->payload_sz > out_buf_len) { | |
7509 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
7510 | nbytes = out_buf_len; | |
7511 | } | |
7512 | ||
7513 | if (!rpc_resp->payload_sz) { | |
7514 | rsp->hdr.Status = | |
7515 | STATUS_UNEXPECTED_IO_ERROR; | |
7516 | goto out; | |
7517 | } | |
7518 | ||
7519 | memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes); | |
7520 | } | |
7521 | out: | |
79f6b11a | 7522 | kvfree(rpc_resp); |
e2f34481 NJ |
7523 | return nbytes; |
7524 | } | |
7525 | ||
64b39f4a | 7526 | static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id, |
070fb21e | 7527 | struct file_sparse *sparse) |
e2f34481 NJ |
7528 | { |
7529 | struct ksmbd_file *fp; | |
4609e1f1 | 7530 | struct mnt_idmap *idmap; |
e2f34481 NJ |
7531 | int ret = 0; |
7532 | __le32 old_fattr; | |
7533 | ||
7534 | fp = ksmbd_lookup_fd_fast(work, id); | |
7535 | if (!fp) | |
7536 | return -ENOENT; | |
4609e1f1 | 7537 | idmap = file_mnt_idmap(fp->filp); |
e2f34481 NJ |
7538 | |
7539 | old_fattr = fp->f_ci->m_fattr; | |
7540 | if (sparse->SetSparse) | |
26a2787d | 7541 | fp->f_ci->m_fattr |= FILE_ATTRIBUTE_SPARSE_FILE_LE; |
e2f34481 | 7542 | else |
26a2787d | 7543 | fp->f_ci->m_fattr &= ~FILE_ATTRIBUTE_SPARSE_FILE_LE; |
e2f34481 NJ |
7544 | |
7545 | if (fp->f_ci->m_fattr != old_fattr && | |
64b39f4a NJ |
7546 | test_share_config_flag(work->tcon->share_conf, |
7547 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) { | |
e2f34481 NJ |
7548 | struct xattr_dos_attrib da; |
7549 | ||
4609e1f1 | 7550 | ret = ksmbd_vfs_get_dos_attrib_xattr(idmap, |
af34983e | 7551 | fp->filp->f_path.dentry, &da); |
e2f34481 NJ |
7552 | if (ret <= 0) |
7553 | goto out; | |
7554 | ||
7555 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
4609e1f1 | 7556 | ret = ksmbd_vfs_set_dos_attrib_xattr(idmap, |
af34983e | 7557 | fp->filp->f_path.dentry, &da); |
e2f34481 NJ |
7558 | if (ret) |
7559 | fp->f_ci->m_fattr = old_fattr; | |
7560 | } | |
7561 | ||
7562 | out: | |
7563 | ksmbd_fd_put(work, fp); | |
7564 | return ret; | |
7565 | } | |
7566 | ||
7567 | static int fsctl_request_resume_key(struct ksmbd_work *work, | |
070fb21e NJ |
7568 | struct smb2_ioctl_req *req, |
7569 | struct resume_key_ioctl_rsp *key_rsp) | |
e2f34481 NJ |
7570 | { |
7571 | struct ksmbd_file *fp; | |
7572 | ||
2d004c6c | 7573 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 NJ |
7574 | if (!fp) |
7575 | return -ENOENT; | |
7576 | ||
7577 | memset(key_rsp, 0, sizeof(*key_rsp)); | |
7578 | key_rsp->ResumeKey[0] = req->VolatileFileId; | |
7579 | key_rsp->ResumeKey[1] = req->PersistentFileId; | |
7580 | ksmbd_fd_put(work, fp); | |
7581 | ||
7582 | return 0; | |
7583 | } | |
7584 | ||
7585 | /** | |
7586 | * smb2_ioctl() - handler for smb2 ioctl command | |
7587 | * @work: smb work containing ioctl command buffer | |
7588 | * | |
7589 | * Return: 0 on success, otherwise error | |
7590 | */ | |
7591 | int smb2_ioctl(struct ksmbd_work *work) | |
7592 | { | |
7593 | struct smb2_ioctl_req *req; | |
cb451720 | 7594 | struct smb2_ioctl_rsp *rsp; |
f7db8fd0 | 7595 | unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len; |
64b39f4a | 7596 | u64 id = KSMBD_NO_FID; |
e2f34481 NJ |
7597 | struct ksmbd_conn *conn = work->conn; |
7598 | int ret = 0; | |
7599 | ||
e2f34481 | 7600 | if (work->next_smb2_rcv_hdr_off) { |
8a893315 NJ |
7601 | req = ksmbd_req_buf_next(work); |
7602 | rsp = ksmbd_resp_buf_next(work); | |
2d004c6c | 7603 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 7604 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 7605 | work->compound_fid); |
e2f34481 NJ |
7606 | id = work->compound_fid; |
7607 | } | |
7608 | } else { | |
cb451720 NJ |
7609 | req = smb2_get_msg(work->request_buf); |
7610 | rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
7611 | } |
7612 | ||
3867369e | 7613 | if (!has_file_id(id)) |
2d004c6c | 7614 | id = req->VolatileFileId; |
e2f34481 NJ |
7615 | |
7616 | if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) { | |
7617 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
7618 | goto out; | |
7619 | } | |
7620 | ||
15e7b6d7 | 7621 | cnt_code = le32_to_cpu(req->CtlCode); |
34061d6b HL |
7622 | ret = smb2_calc_max_out_buf_len(work, 48, |
7623 | le32_to_cpu(req->MaxOutputResponse)); | |
7624 | if (ret < 0) { | |
7625 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7626 | goto out; | |
7627 | } | |
7628 | out_buf_len = (unsigned int)ret; | |
f7db8fd0 | 7629 | in_buf_len = le32_to_cpu(req->InputCount); |
e2f34481 NJ |
7630 | |
7631 | switch (cnt_code) { | |
7632 | case FSCTL_DFS_GET_REFERRALS: | |
7633 | case FSCTL_DFS_GET_REFERRALS_EX: | |
7634 | /* Not support DFS yet */ | |
7635 | rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED; | |
7636 | goto out; | |
7637 | case FSCTL_CREATE_OR_GET_OBJECT_ID: | |
7638 | { | |
7639 | struct file_object_buf_type1_ioctl_rsp *obj_buf; | |
7640 | ||
7641 | nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp); | |
7642 | obj_buf = (struct file_object_buf_type1_ioctl_rsp *) | |
7643 | &rsp->Buffer[0]; | |
7644 | ||
7645 | /* | |
7646 | * TODO: This is dummy implementation to pass smbtorture | |
7647 | * Need to check correct response later | |
7648 | */ | |
7649 | memset(obj_buf->ObjectId, 0x0, 16); | |
7650 | memset(obj_buf->BirthVolumeId, 0x0, 16); | |
7651 | memset(obj_buf->BirthObjectId, 0x0, 16); | |
7652 | memset(obj_buf->DomainId, 0x0, 16); | |
7653 | ||
7654 | break; | |
7655 | } | |
7656 | case FSCTL_PIPE_TRANSCEIVE: | |
f7db8fd0 | 7657 | out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len); |
e2f34481 NJ |
7658 | nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp); |
7659 | break; | |
7660 | case FSCTL_VALIDATE_NEGOTIATE_INFO: | |
7661 | if (conn->dialect < SMB30_PROT_ID) { | |
7662 | ret = -EOPNOTSUPP; | |
7663 | goto out; | |
7664 | } | |
7665 | ||
b1763d26 ZX |
7666 | if (in_buf_len < offsetof(struct validate_negotiate_info_req, |
7667 | Dialects)) { | |
7668 | ret = -EINVAL; | |
7669 | goto out; | |
7670 | } | |
f7db8fd0 | 7671 | |
b1763d26 ZX |
7672 | if (out_buf_len < sizeof(struct validate_negotiate_info_rsp)) { |
7673 | ret = -EINVAL; | |
7674 | goto out; | |
7675 | } | |
f7db8fd0 | 7676 | |
e2f34481 NJ |
7677 | ret = fsctl_validate_negotiate_info(conn, |
7678 | (struct validate_negotiate_info_req *)&req->Buffer[0], | |
f7db8fd0 NJ |
7679 | (struct validate_negotiate_info_rsp *)&rsp->Buffer[0], |
7680 | in_buf_len); | |
e2f34481 NJ |
7681 | if (ret < 0) |
7682 | goto out; | |
7683 | ||
7684 | nbytes = sizeof(struct validate_negotiate_info_rsp); | |
2d004c6c PA |
7685 | rsp->PersistentFileId = SMB2_NO_FID; |
7686 | rsp->VolatileFileId = SMB2_NO_FID; | |
e2f34481 NJ |
7687 | break; |
7688 | case FSCTL_QUERY_NETWORK_INTERFACE_INFO: | |
f7db8fd0 NJ |
7689 | ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len); |
7690 | if (ret < 0) | |
e2f34481 | 7691 | goto out; |
f7db8fd0 | 7692 | nbytes = ret; |
e2f34481 NJ |
7693 | break; |
7694 | case FSCTL_REQUEST_RESUME_KEY: | |
7695 | if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) { | |
7696 | ret = -EINVAL; | |
7697 | goto out; | |
7698 | } | |
7699 | ||
7700 | ret = fsctl_request_resume_key(work, req, | |
070fb21e | 7701 | (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]); |
e2f34481 NJ |
7702 | if (ret < 0) |
7703 | goto out; | |
7704 | rsp->PersistentFileId = req->PersistentFileId; | |
7705 | rsp->VolatileFileId = req->VolatileFileId; | |
7706 | nbytes = sizeof(struct resume_key_ioctl_rsp); | |
7707 | break; | |
7708 | case FSCTL_COPYCHUNK: | |
7709 | case FSCTL_COPYCHUNK_WRITE: | |
64b39f4a | 7710 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 7711 | ksmbd_debug(SMB, |
070fb21e | 7712 | "User does not have write permission\n"); |
e2f34481 NJ |
7713 | ret = -EACCES; |
7714 | goto out; | |
7715 | } | |
7716 | ||
f7db8fd0 NJ |
7717 | if (in_buf_len < sizeof(struct copychunk_ioctl_req)) { |
7718 | ret = -EINVAL; | |
7719 | goto out; | |
7720 | } | |
7721 | ||
e2f34481 NJ |
7722 | if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) { |
7723 | ret = -EINVAL; | |
7724 | goto out; | |
7725 | } | |
7726 | ||
7727 | nbytes = sizeof(struct copychunk_ioctl_rsp); | |
f7db8fd0 NJ |
7728 | rsp->VolatileFileId = req->VolatileFileId; |
7729 | rsp->PersistentFileId = req->PersistentFileId; | |
7730 | fsctl_copychunk(work, | |
7731 | (struct copychunk_ioctl_req *)&req->Buffer[0], | |
15e7b6d7 | 7732 | le32_to_cpu(req->CtlCode), |
f7db8fd0 | 7733 | le32_to_cpu(req->InputCount), |
2d004c6c PA |
7734 | req->VolatileFileId, |
7735 | req->PersistentFileId, | |
f7db8fd0 | 7736 | rsp); |
e2f34481 NJ |
7737 | break; |
7738 | case FSCTL_SET_SPARSE: | |
f7db8fd0 NJ |
7739 | if (in_buf_len < sizeof(struct file_sparse)) { |
7740 | ret = -EINVAL; | |
7741 | goto out; | |
7742 | } | |
7743 | ||
e2f34481 | 7744 | ret = fsctl_set_sparse(work, id, |
070fb21e | 7745 | (struct file_sparse *)&req->Buffer[0]); |
e2f34481 NJ |
7746 | if (ret < 0) |
7747 | goto out; | |
7748 | break; | |
7749 | case FSCTL_SET_ZERO_DATA: | |
7750 | { | |
7751 | struct file_zero_data_information *zero_data; | |
7752 | struct ksmbd_file *fp; | |
b5e5f9df | 7753 | loff_t off, len, bfz; |
e2f34481 | 7754 | |
64b39f4a | 7755 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 7756 | ksmbd_debug(SMB, |
070fb21e | 7757 | "User does not have write permission\n"); |
e2f34481 NJ |
7758 | ret = -EACCES; |
7759 | goto out; | |
7760 | } | |
7761 | ||
f7db8fd0 NJ |
7762 | if (in_buf_len < sizeof(struct file_zero_data_information)) { |
7763 | ret = -EINVAL; | |
7764 | goto out; | |
7765 | } | |
7766 | ||
e2f34481 NJ |
7767 | zero_data = |
7768 | (struct file_zero_data_information *)&req->Buffer[0]; | |
7769 | ||
b5e5f9df NJ |
7770 | off = le64_to_cpu(zero_data->FileOffset); |
7771 | bfz = le64_to_cpu(zero_data->BeyondFinalZero); | |
7772 | if (off > bfz) { | |
7773 | ret = -EINVAL; | |
e2f34481 NJ |
7774 | goto out; |
7775 | } | |
7776 | ||
b5e5f9df NJ |
7777 | len = bfz - off; |
7778 | if (len) { | |
7779 | fp = ksmbd_lookup_fd_fast(work, id); | |
7780 | if (!fp) { | |
7781 | ret = -ENOENT; | |
7782 | goto out; | |
7783 | } | |
e2f34481 | 7784 | |
b5e5f9df NJ |
7785 | ret = ksmbd_vfs_zero_data(work, fp, off, len); |
7786 | ksmbd_fd_put(work, fp); | |
7787 | if (ret < 0) | |
7788 | goto out; | |
7789 | } | |
e2f34481 NJ |
7790 | break; |
7791 | } | |
7792 | case FSCTL_QUERY_ALLOCATED_RANGES: | |
f7db8fd0 NJ |
7793 | if (in_buf_len < sizeof(struct file_allocated_range_buffer)) { |
7794 | ret = -EINVAL; | |
7795 | goto out; | |
7796 | } | |
7797 | ||
e2f34481 NJ |
7798 | ret = fsctl_query_allocated_ranges(work, id, |
7799 | (struct file_allocated_range_buffer *)&req->Buffer[0], | |
7800 | (struct file_allocated_range_buffer *)&rsp->Buffer[0], | |
7801 | out_buf_len / | |
7802 | sizeof(struct file_allocated_range_buffer), &nbytes); | |
7803 | if (ret == -E2BIG) { | |
7804 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
7805 | } else if (ret < 0) { | |
7806 | nbytes = 0; | |
7807 | goto out; | |
7808 | } | |
7809 | ||
7810 | nbytes *= sizeof(struct file_allocated_range_buffer); | |
7811 | break; | |
7812 | case FSCTL_GET_REPARSE_POINT: | |
7813 | { | |
7814 | struct reparse_data_buffer *reparse_ptr; | |
7815 | struct ksmbd_file *fp; | |
7816 | ||
7817 | reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0]; | |
7818 | fp = ksmbd_lookup_fd_fast(work, id); | |
7819 | if (!fp) { | |
bde1694a | 7820 | pr_err("not found fp!!\n"); |
e2f34481 NJ |
7821 | ret = -ENOENT; |
7822 | goto out; | |
7823 | } | |
7824 | ||
7825 | reparse_ptr->ReparseTag = | |
ab0b263b | 7826 | smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode); |
e2f34481 NJ |
7827 | reparse_ptr->ReparseDataLength = 0; |
7828 | ksmbd_fd_put(work, fp); | |
7829 | nbytes = sizeof(struct reparse_data_buffer); | |
7830 | break; | |
7831 | } | |
eb817368 NJ |
7832 | case FSCTL_DUPLICATE_EXTENTS_TO_FILE: |
7833 | { | |
7834 | struct ksmbd_file *fp_in, *fp_out = NULL; | |
7835 | struct duplicate_extents_to_file *dup_ext; | |
7836 | loff_t src_off, dst_off, length, cloned; | |
7837 | ||
f7db8fd0 NJ |
7838 | if (in_buf_len < sizeof(struct duplicate_extents_to_file)) { |
7839 | ret = -EINVAL; | |
7840 | goto out; | |
7841 | } | |
7842 | ||
eb817368 NJ |
7843 | dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0]; |
7844 | ||
7845 | fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle, | |
070fb21e | 7846 | dup_ext->PersistentFileHandle); |
eb817368 | 7847 | if (!fp_in) { |
bde1694a | 7848 | pr_err("not found file handle in duplicate extent to file\n"); |
eb817368 NJ |
7849 | ret = -ENOENT; |
7850 | goto out; | |
7851 | } | |
7852 | ||
7853 | fp_out = ksmbd_lookup_fd_fast(work, id); | |
7854 | if (!fp_out) { | |
bde1694a | 7855 | pr_err("not found fp\n"); |
eb817368 NJ |
7856 | ret = -ENOENT; |
7857 | goto dup_ext_out; | |
7858 | } | |
7859 | ||
7860 | src_off = le64_to_cpu(dup_ext->SourceFileOffset); | |
7861 | dst_off = le64_to_cpu(dup_ext->TargetFileOffset); | |
7862 | length = le64_to_cpu(dup_ext->ByteCount); | |
868f9f2f AG |
7863 | /* |
7864 | * XXX: It is not clear if FSCTL_DUPLICATE_EXTENTS_TO_FILE | |
7865 | * should fall back to vfs_copy_file_range(). This could be | |
7866 | * beneficial when re-exporting nfs/smb mount, but note that | |
7867 | * this can result in partial copy that returns an error status. | |
7868 | * If/when FSCTL_DUPLICATE_EXTENTS_TO_FILE_EX is implemented, | |
7869 | * fall back to vfs_copy_file_range(), should be avoided when | |
7870 | * the flag DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC is set. | |
7871 | */ | |
7872 | cloned = vfs_clone_file_range(fp_in->filp, src_off, | |
7873 | fp_out->filp, dst_off, length, 0); | |
eb817368 NJ |
7874 | if (cloned == -EXDEV || cloned == -EOPNOTSUPP) { |
7875 | ret = -EOPNOTSUPP; | |
7876 | goto dup_ext_out; | |
7877 | } else if (cloned != length) { | |
f8524776 | 7878 | cloned = vfs_copy_file_range(fp_in->filp, src_off, |
868f9f2f AG |
7879 | fp_out->filp, dst_off, |
7880 | length, 0); | |
eb817368 NJ |
7881 | if (cloned != length) { |
7882 | if (cloned < 0) | |
7883 | ret = cloned; | |
7884 | else | |
7885 | ret = -EINVAL; | |
7886 | } | |
7887 | } | |
7888 | ||
7889 | dup_ext_out: | |
7890 | ksmbd_fd_put(work, fp_in); | |
7891 | ksmbd_fd_put(work, fp_out); | |
7892 | if (ret < 0) | |
7893 | goto out; | |
7894 | break; | |
7895 | } | |
e2f34481 NJ |
7896 | default: |
7897 | ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n", | |
070fb21e | 7898 | cnt_code); |
e2f34481 NJ |
7899 | ret = -EOPNOTSUPP; |
7900 | goto out; | |
7901 | } | |
7902 | ||
15e7b6d7 | 7903 | rsp->CtlCode = cpu_to_le32(cnt_code); |
e2f34481 NJ |
7904 | rsp->InputCount = cpu_to_le32(0); |
7905 | rsp->InputOffset = cpu_to_le32(112); | |
7906 | rsp->OutputOffset = cpu_to_le32(112); | |
7907 | rsp->OutputCount = cpu_to_le32(nbytes); | |
7908 | rsp->StructureSize = cpu_to_le16(49); | |
7909 | rsp->Reserved = cpu_to_le16(0); | |
7910 | rsp->Flags = cpu_to_le32(0); | |
7911 | rsp->Reserved2 = cpu_to_le32(0); | |
cb451720 | 7912 | inc_rfc1001_len(work->response_buf, 48 + nbytes); |
e2f34481 NJ |
7913 | |
7914 | return 0; | |
7915 | ||
7916 | out: | |
7917 | if (ret == -EACCES) | |
7918 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
7919 | else if (ret == -ENOENT) | |
7920 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; | |
7921 | else if (ret == -EOPNOTSUPP) | |
7922 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
f7db8fd0 NJ |
7923 | else if (ret == -ENOSPC) |
7924 | rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL; | |
e2f34481 NJ |
7925 | else if (ret < 0 || rsp->hdr.Status == 0) |
7926 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7927 | smb2_set_err_rsp(work); | |
7928 | return 0; | |
7929 | } | |
7930 | ||
7931 | /** | |
7932 | * smb20_oplock_break_ack() - handler for smb2.0 oplock break command | |
7933 | * @work: smb work containing oplock break command buffer | |
7934 | * | |
7935 | * Return: 0 | |
7936 | */ | |
7937 | static void smb20_oplock_break_ack(struct ksmbd_work *work) | |
7938 | { | |
cb451720 NJ |
7939 | struct smb2_oplock_break *req = smb2_get_msg(work->request_buf); |
7940 | struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
7941 | struct ksmbd_file *fp; |
7942 | struct oplock_info *opinfo = NULL; | |
7943 | __le32 err = 0; | |
7944 | int ret = 0; | |
64b39f4a | 7945 | u64 volatile_id, persistent_id; |
e2f34481 NJ |
7946 | char req_oplevel = 0, rsp_oplevel = 0; |
7947 | unsigned int oplock_change_type; | |
7948 | ||
c7803b05 SF |
7949 | volatile_id = req->VolatileFid; |
7950 | persistent_id = req->PersistentFid; | |
e2f34481 NJ |
7951 | req_oplevel = req->OplockLevel; |
7952 | ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n", | |
7953 | volatile_id, persistent_id, req_oplevel); | |
7954 | ||
7955 | fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id); | |
7956 | if (!fp) { | |
7957 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
7958 | smb2_set_err_rsp(work); | |
7959 | return; | |
7960 | } | |
7961 | ||
7962 | opinfo = opinfo_get(fp); | |
7963 | if (!opinfo) { | |
bde1694a | 7964 | pr_err("unexpected null oplock_info\n"); |
e2f34481 NJ |
7965 | rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; |
7966 | smb2_set_err_rsp(work); | |
7967 | ksmbd_fd_put(work, fp); | |
7968 | return; | |
7969 | } | |
7970 | ||
7971 | if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) { | |
7972 | rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; | |
7973 | goto err_out; | |
7974 | } | |
7975 | ||
7976 | if (opinfo->op_state == OPLOCK_STATE_NONE) { | |
7977 | ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state); | |
7978 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
7979 | goto err_out; | |
7980 | } | |
7981 | ||
64b39f4a NJ |
7982 | if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7983 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7984 | (req_oplevel != SMB2_OPLOCK_LEVEL_II && | |
7985 | req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) { | |
e2f34481 NJ |
7986 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7987 | oplock_change_type = OPLOCK_WRITE_TO_NONE; | |
64b39f4a NJ |
7988 | } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
7989 | req_oplevel != SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 NJ |
7990 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7991 | oplock_change_type = OPLOCK_READ_TO_NONE; | |
64b39f4a NJ |
7992 | } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II || |
7993 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 7994 | err = STATUS_INVALID_DEVICE_STATE; |
64b39f4a NJ |
7995 | if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7996 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7997 | req_oplevel == SMB2_OPLOCK_LEVEL_II) { | |
e2f34481 | 7998 | oplock_change_type = OPLOCK_WRITE_TO_READ; |
64b39f4a NJ |
7999 | } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
8000 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
8001 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 8002 | oplock_change_type = OPLOCK_WRITE_TO_NONE; |
64b39f4a NJ |
8003 | } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
8004 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 8005 | oplock_change_type = OPLOCK_READ_TO_NONE; |
64b39f4a | 8006 | } else { |
e2f34481 | 8007 | oplock_change_type = 0; |
64b39f4a NJ |
8008 | } |
8009 | } else { | |
e2f34481 | 8010 | oplock_change_type = 0; |
64b39f4a | 8011 | } |
e2f34481 NJ |
8012 | |
8013 | switch (oplock_change_type) { | |
8014 | case OPLOCK_WRITE_TO_READ: | |
8015 | ret = opinfo_write_to_read(opinfo); | |
8016 | rsp_oplevel = SMB2_OPLOCK_LEVEL_II; | |
8017 | break; | |
8018 | case OPLOCK_WRITE_TO_NONE: | |
8019 | ret = opinfo_write_to_none(opinfo); | |
8020 | rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; | |
8021 | break; | |
8022 | case OPLOCK_READ_TO_NONE: | |
8023 | ret = opinfo_read_to_none(opinfo); | |
8024 | rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; | |
8025 | break; | |
8026 | default: | |
bde1694a NJ |
8027 | pr_err("unknown oplock change 0x%x -> 0x%x\n", |
8028 | opinfo->level, rsp_oplevel); | |
e2f34481 NJ |
8029 | } |
8030 | ||
8031 | if (ret < 0) { | |
8032 | rsp->hdr.Status = err; | |
8033 | goto err_out; | |
8034 | } | |
8035 | ||
8036 | opinfo_put(opinfo); | |
8037 | ksmbd_fd_put(work, fp); | |
8038 | opinfo->op_state = OPLOCK_STATE_NONE; | |
8039 | wake_up_interruptible_all(&opinfo->oplock_q); | |
8040 | ||
8041 | rsp->StructureSize = cpu_to_le16(24); | |
8042 | rsp->OplockLevel = rsp_oplevel; | |
8043 | rsp->Reserved = 0; | |
8044 | rsp->Reserved2 = 0; | |
c7803b05 SF |
8045 | rsp->VolatileFid = volatile_id; |
8046 | rsp->PersistentFid = persistent_id; | |
cb451720 | 8047 | inc_rfc1001_len(work->response_buf, 24); |
e2f34481 NJ |
8048 | return; |
8049 | ||
8050 | err_out: | |
8051 | opinfo->op_state = OPLOCK_STATE_NONE; | |
8052 | wake_up_interruptible_all(&opinfo->oplock_q); | |
8053 | ||
8054 | opinfo_put(opinfo); | |
8055 | ksmbd_fd_put(work, fp); | |
8056 | smb2_set_err_rsp(work); | |
8057 | } | |
8058 | ||
8059 | static int check_lease_state(struct lease *lease, __le32 req_state) | |
8060 | { | |
8061 | if ((lease->new_state == | |
64b39f4a NJ |
8062 | (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) && |
8063 | !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) { | |
e2f34481 NJ |
8064 | lease->new_state = req_state; |
8065 | return 0; | |
8066 | } | |
8067 | ||
8068 | if (lease->new_state == req_state) | |
8069 | return 0; | |
8070 | ||
8071 | return 1; | |
8072 | } | |
8073 | ||
8074 | /** | |
8075 | * smb21_lease_break_ack() - handler for smb2.1 lease break command | |
8076 | * @work: smb work containing lease break command buffer | |
8077 | * | |
8078 | * Return: 0 | |
8079 | */ | |
8080 | static void smb21_lease_break_ack(struct ksmbd_work *work) | |
8081 | { | |
8082 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
8083 | struct smb2_lease_ack *req = smb2_get_msg(work->request_buf); |
8084 | struct smb2_lease_ack *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
8085 | struct oplock_info *opinfo; |
8086 | __le32 err = 0; | |
8087 | int ret = 0; | |
8088 | unsigned int lease_change_type; | |
8089 | __le32 lease_state; | |
8090 | struct lease *lease; | |
8091 | ||
8092 | ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n", | |
070fb21e | 8093 | le32_to_cpu(req->LeaseState)); |
e2f34481 NJ |
8094 | opinfo = lookup_lease_in_table(conn, req->LeaseKey); |
8095 | if (!opinfo) { | |
8096 | ksmbd_debug(OPLOCK, "file not opened\n"); | |
8097 | smb2_set_err_rsp(work); | |
8098 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
8099 | return; | |
8100 | } | |
8101 | lease = opinfo->o_lease; | |
8102 | ||
8103 | if (opinfo->op_state == OPLOCK_STATE_NONE) { | |
bde1694a NJ |
8104 | pr_err("unexpected lease break state 0x%x\n", |
8105 | opinfo->op_state); | |
e2f34481 NJ |
8106 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; |
8107 | goto err_out; | |
8108 | } | |
8109 | ||
8110 | if (check_lease_state(lease, req->LeaseState)) { | |
8111 | rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; | |
8112 | ksmbd_debug(OPLOCK, | |
070fb21e NJ |
8113 | "req lease state: 0x%x, expected state: 0x%x\n", |
8114 | req->LeaseState, lease->new_state); | |
e2f34481 NJ |
8115 | goto err_out; |
8116 | } | |
8117 | ||
8118 | if (!atomic_read(&opinfo->breaking_cnt)) { | |
8119 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
8120 | goto err_out; | |
8121 | } | |
8122 | ||
8123 | /* check for bad lease state */ | |
070fb21e NJ |
8124 | if (req->LeaseState & |
8125 | (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) { | |
e2f34481 NJ |
8126 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
8127 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
8128 | lease_change_type = OPLOCK_WRITE_TO_NONE; | |
8129 | else | |
8130 | lease_change_type = OPLOCK_READ_TO_NONE; | |
8131 | ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", | |
070fb21e NJ |
8132 | le32_to_cpu(lease->state), |
8133 | le32_to_cpu(req->LeaseState)); | |
64b39f4a NJ |
8134 | } else if (lease->state == SMB2_LEASE_READ_CACHING_LE && |
8135 | req->LeaseState != SMB2_LEASE_NONE_LE) { | |
e2f34481 NJ |
8136 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
8137 | lease_change_type = OPLOCK_READ_TO_NONE; | |
8138 | ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", | |
070fb21e NJ |
8139 | le32_to_cpu(lease->state), |
8140 | le32_to_cpu(req->LeaseState)); | |
e2f34481 NJ |
8141 | } else { |
8142 | /* valid lease state changes */ | |
8143 | err = STATUS_INVALID_DEVICE_STATE; | |
8144 | if (req->LeaseState == SMB2_LEASE_NONE_LE) { | |
8145 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
8146 | lease_change_type = OPLOCK_WRITE_TO_NONE; | |
8147 | else | |
8148 | lease_change_type = OPLOCK_READ_TO_NONE; | |
8149 | } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) { | |
8150 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
8151 | lease_change_type = OPLOCK_WRITE_TO_READ; | |
8152 | else | |
8153 | lease_change_type = OPLOCK_READ_HANDLE_TO_READ; | |
64b39f4a | 8154 | } else { |
e2f34481 | 8155 | lease_change_type = 0; |
64b39f4a | 8156 | } |
e2f34481 NJ |
8157 | } |
8158 | ||
8159 | switch (lease_change_type) { | |
8160 | case OPLOCK_WRITE_TO_READ: | |
8161 | ret = opinfo_write_to_read(opinfo); | |
8162 | break; | |
8163 | case OPLOCK_READ_HANDLE_TO_READ: | |
8164 | ret = opinfo_read_handle_to_read(opinfo); | |
8165 | break; | |
8166 | case OPLOCK_WRITE_TO_NONE: | |
8167 | ret = opinfo_write_to_none(opinfo); | |
8168 | break; | |
8169 | case OPLOCK_READ_TO_NONE: | |
8170 | ret = opinfo_read_to_none(opinfo); | |
8171 | break; | |
8172 | default: | |
8173 | ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n", | |
070fb21e NJ |
8174 | le32_to_cpu(lease->state), |
8175 | le32_to_cpu(req->LeaseState)); | |
e2f34481 NJ |
8176 | } |
8177 | ||
8178 | lease_state = lease->state; | |
8179 | opinfo->op_state = OPLOCK_STATE_NONE; | |
8180 | wake_up_interruptible_all(&opinfo->oplock_q); | |
8181 | atomic_dec(&opinfo->breaking_cnt); | |
8182 | wake_up_interruptible_all(&opinfo->oplock_brk); | |
8183 | opinfo_put(opinfo); | |
8184 | ||
8185 | if (ret < 0) { | |
8186 | rsp->hdr.Status = err; | |
8187 | goto err_out; | |
8188 | } | |
8189 | ||
8190 | rsp->StructureSize = cpu_to_le16(36); | |
8191 | rsp->Reserved = 0; | |
8192 | rsp->Flags = 0; | |
8193 | memcpy(rsp->LeaseKey, req->LeaseKey, 16); | |
8194 | rsp->LeaseState = lease_state; | |
8195 | rsp->LeaseDuration = 0; | |
cb451720 | 8196 | inc_rfc1001_len(work->response_buf, 36); |
e2f34481 NJ |
8197 | return; |
8198 | ||
8199 | err_out: | |
8200 | opinfo->op_state = OPLOCK_STATE_NONE; | |
8201 | wake_up_interruptible_all(&opinfo->oplock_q); | |
8202 | atomic_dec(&opinfo->breaking_cnt); | |
8203 | wake_up_interruptible_all(&opinfo->oplock_brk); | |
8204 | ||
8205 | opinfo_put(opinfo); | |
8206 | smb2_set_err_rsp(work); | |
8207 | } | |
8208 | ||
8209 | /** | |
8210 | * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break | |
8211 | * @work: smb work containing oplock/lease break command buffer | |
8212 | * | |
8213 | * Return: 0 | |
8214 | */ | |
8215 | int smb2_oplock_break(struct ksmbd_work *work) | |
8216 | { | |
cb451720 NJ |
8217 | struct smb2_oplock_break *req = smb2_get_msg(work->request_buf); |
8218 | struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
8219 | |
8220 | switch (le16_to_cpu(req->StructureSize)) { | |
8221 | case OP_BREAK_STRUCT_SIZE_20: | |
8222 | smb20_oplock_break_ack(work); | |
8223 | break; | |
8224 | case OP_BREAK_STRUCT_SIZE_21: | |
8225 | smb21_lease_break_ack(work); | |
8226 | break; | |
8227 | default: | |
8228 | ksmbd_debug(OPLOCK, "invalid break cmd %d\n", | |
070fb21e | 8229 | le16_to_cpu(req->StructureSize)); |
e2f34481 NJ |
8230 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
8231 | smb2_set_err_rsp(work); | |
8232 | } | |
8233 | ||
8234 | return 0; | |
8235 | } | |
8236 | ||
8237 | /** | |
8238 | * smb2_notify() - handler for smb2 notify request | |
95fa1ce9 | 8239 | * @work: smb work containing notify command buffer |
e2f34481 NJ |
8240 | * |
8241 | * Return: 0 | |
8242 | */ | |
8243 | int smb2_notify(struct ksmbd_work *work) | |
8244 | { | |
699230f3 RS |
8245 | struct smb2_change_notify_req *req; |
8246 | struct smb2_change_notify_rsp *rsp; | |
e2f34481 NJ |
8247 | |
8248 | WORK_BUFFERS(work, req, rsp); | |
8249 | ||
8250 | if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) { | |
8251 | rsp->hdr.Status = STATUS_INTERNAL_ERROR; | |
8252 | smb2_set_err_rsp(work); | |
8253 | return 0; | |
8254 | } | |
8255 | ||
8256 | smb2_set_err_rsp(work); | |
8257 | rsp->hdr.Status = STATUS_NOT_IMPLEMENTED; | |
8258 | return 0; | |
8259 | } | |
8260 | ||
8261 | /** | |
8262 | * smb2_is_sign_req() - handler for checking packet signing status | |
95fa1ce9 HL |
8263 | * @work: smb work containing notify command buffer |
8264 | * @command: SMB2 command id | |
e2f34481 NJ |
8265 | * |
8266 | * Return: true if packed is signed, false otherwise | |
8267 | */ | |
8268 | bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command) | |
8269 | { | |
cb451720 | 8270 | struct smb2_hdr *rcv_hdr2 = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
8271 | |
8272 | if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) && | |
64b39f4a NJ |
8273 | command != SMB2_NEGOTIATE_HE && |
8274 | command != SMB2_SESSION_SETUP_HE && | |
8275 | command != SMB2_OPLOCK_BREAK_HE) | |
e2f34481 NJ |
8276 | return true; |
8277 | ||
5616015f | 8278 | return false; |
e2f34481 NJ |
8279 | } |
8280 | ||
8281 | /** | |
8282 | * smb2_check_sign_req() - handler for req packet sign processing | |
8283 | * @work: smb work containing notify command buffer | |
8284 | * | |
8285 | * Return: 1 on success, 0 otherwise | |
8286 | */ | |
8287 | int smb2_check_sign_req(struct ksmbd_work *work) | |
8288 | { | |
cb451720 | 8289 | struct smb2_hdr *hdr; |
e2f34481 NJ |
8290 | char signature_req[SMB2_SIGNATURE_SIZE]; |
8291 | char signature[SMB2_HMACSHA256_SIZE]; | |
8292 | struct kvec iov[1]; | |
8293 | size_t len; | |
8294 | ||
cb451720 | 8295 | hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 8296 | if (work->next_smb2_rcv_hdr_off) |
8a893315 | 8297 | hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8298 | |
8299 | if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) | |
cb451720 | 8300 | len = get_rfc1002_len(work->request_buf); |
e2f34481 NJ |
8301 | else if (hdr->NextCommand) |
8302 | len = le32_to_cpu(hdr->NextCommand); | |
8303 | else | |
cb451720 | 8304 | len = get_rfc1002_len(work->request_buf) - |
e2f34481 NJ |
8305 | work->next_smb2_rcv_hdr_off; |
8306 | ||
8307 | memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); | |
8308 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8309 | ||
8310 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8311 | iov[0].iov_len = len; | |
8312 | ||
8313 | if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1, | |
64b39f4a | 8314 | signature)) |
e2f34481 NJ |
8315 | return 0; |
8316 | ||
8317 | if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { | |
bde1694a | 8318 | pr_err("bad smb2 signature\n"); |
e2f34481 NJ |
8319 | return 0; |
8320 | } | |
8321 | ||
8322 | return 1; | |
8323 | } | |
8324 | ||
8325 | /** | |
8326 | * smb2_set_sign_rsp() - handler for rsp packet sign processing | |
8327 | * @work: smb work containing notify command buffer | |
8328 | * | |
8329 | */ | |
8330 | void smb2_set_sign_rsp(struct ksmbd_work *work) | |
8331 | { | |
cb451720 | 8332 | struct smb2_hdr *hdr; |
e2f34481 NJ |
8333 | struct smb2_hdr *req_hdr; |
8334 | char signature[SMB2_HMACSHA256_SIZE]; | |
8335 | struct kvec iov[2]; | |
8336 | size_t len; | |
8337 | int n_vec = 1; | |
8338 | ||
cb451720 | 8339 | hdr = smb2_get_msg(work->response_buf); |
e2f34481 | 8340 | if (work->next_smb2_rsp_hdr_off) |
8a893315 | 8341 | hdr = ksmbd_resp_buf_next(work); |
e2f34481 | 8342 | |
8a893315 | 8343 | req_hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8344 | |
8345 | if (!work->next_smb2_rsp_hdr_off) { | |
cb451720 | 8346 | len = get_rfc1002_len(work->response_buf); |
e2f34481 NJ |
8347 | if (req_hdr->NextCommand) |
8348 | len = ALIGN(len, 8); | |
8349 | } else { | |
cb451720 NJ |
8350 | len = get_rfc1002_len(work->response_buf) - |
8351 | work->next_smb2_rsp_hdr_off; | |
e2f34481 NJ |
8352 | len = ALIGN(len, 8); |
8353 | } | |
8354 | ||
8355 | if (req_hdr->NextCommand) | |
8356 | hdr->NextCommand = cpu_to_le32(len); | |
8357 | ||
8358 | hdr->Flags |= SMB2_FLAGS_SIGNED; | |
8359 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8360 | ||
8361 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8362 | iov[0].iov_len = len; | |
8363 | ||
e5066499 NJ |
8364 | if (work->aux_payload_sz) { |
8365 | iov[0].iov_len -= work->aux_payload_sz; | |
e2f34481 | 8366 | |
e5066499 NJ |
8367 | iov[1].iov_base = work->aux_payload_buf; |
8368 | iov[1].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8369 | n_vec++; |
8370 | } | |
8371 | ||
8372 | if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec, | |
64b39f4a | 8373 | signature)) |
e2f34481 NJ |
8374 | memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); |
8375 | } | |
8376 | ||
8377 | /** | |
8378 | * smb3_check_sign_req() - handler for req packet sign processing | |
8379 | * @work: smb work containing notify command buffer | |
8380 | * | |
8381 | * Return: 1 on success, 0 otherwise | |
8382 | */ | |
8383 | int smb3_check_sign_req(struct ksmbd_work *work) | |
8384 | { | |
f5a544e3 | 8385 | struct ksmbd_conn *conn = work->conn; |
e2f34481 | 8386 | char *signing_key; |
cb451720 | 8387 | struct smb2_hdr *hdr; |
e2f34481 NJ |
8388 | struct channel *chann; |
8389 | char signature_req[SMB2_SIGNATURE_SIZE]; | |
8390 | char signature[SMB2_CMACAES_SIZE]; | |
8391 | struct kvec iov[1]; | |
8392 | size_t len; | |
8393 | ||
cb451720 | 8394 | hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 8395 | if (work->next_smb2_rcv_hdr_off) |
8a893315 | 8396 | hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8397 | |
8398 | if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) | |
cb451720 | 8399 | len = get_rfc1002_len(work->request_buf); |
e2f34481 NJ |
8400 | else if (hdr->NextCommand) |
8401 | len = le32_to_cpu(hdr->NextCommand); | |
8402 | else | |
cb451720 | 8403 | len = get_rfc1002_len(work->request_buf) - |
e2f34481 NJ |
8404 | work->next_smb2_rcv_hdr_off; |
8405 | ||
8406 | if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { | |
8407 | signing_key = work->sess->smb3signingkey; | |
e2f34481 | 8408 | } else { |
8e06b31e | 8409 | read_lock(&work->sess->chann_lock); |
f5a544e3 | 8410 | chann = lookup_chann_list(work->sess, conn); |
8e06b31e NJ |
8411 | if (!chann) { |
8412 | read_unlock(&work->sess->chann_lock); | |
e2f34481 | 8413 | return 0; |
8e06b31e | 8414 | } |
e2f34481 | 8415 | signing_key = chann->smb3signingkey; |
8e06b31e | 8416 | read_unlock(&work->sess->chann_lock); |
e2f34481 NJ |
8417 | } |
8418 | ||
8419 | if (!signing_key) { | |
bde1694a | 8420 | pr_err("SMB3 signing key is not generated\n"); |
e2f34481 NJ |
8421 | return 0; |
8422 | } | |
8423 | ||
8424 | memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); | |
8425 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8426 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8427 | iov[0].iov_len = len; | |
8428 | ||
8429 | if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature)) | |
8430 | return 0; | |
8431 | ||
8432 | if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { | |
bde1694a | 8433 | pr_err("bad smb2 signature\n"); |
e2f34481 NJ |
8434 | return 0; |
8435 | } | |
8436 | ||
8437 | return 1; | |
8438 | } | |
8439 | ||
8440 | /** | |
8441 | * smb3_set_sign_rsp() - handler for rsp packet sign processing | |
8442 | * @work: smb work containing notify command buffer | |
8443 | * | |
8444 | */ | |
8445 | void smb3_set_sign_rsp(struct ksmbd_work *work) | |
8446 | { | |
f5a544e3 | 8447 | struct ksmbd_conn *conn = work->conn; |
cb451720 | 8448 | struct smb2_hdr *req_hdr, *hdr; |
e2f34481 NJ |
8449 | struct channel *chann; |
8450 | char signature[SMB2_CMACAES_SIZE]; | |
8451 | struct kvec iov[2]; | |
8452 | int n_vec = 1; | |
8453 | size_t len; | |
8454 | char *signing_key; | |
8455 | ||
cb451720 | 8456 | hdr = smb2_get_msg(work->response_buf); |
e2f34481 | 8457 | if (work->next_smb2_rsp_hdr_off) |
8a893315 | 8458 | hdr = ksmbd_resp_buf_next(work); |
e2f34481 | 8459 | |
8a893315 | 8460 | req_hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8461 | |
8462 | if (!work->next_smb2_rsp_hdr_off) { | |
cb451720 | 8463 | len = get_rfc1002_len(work->response_buf); |
e2f34481 NJ |
8464 | if (req_hdr->NextCommand) |
8465 | len = ALIGN(len, 8); | |
8466 | } else { | |
cb451720 NJ |
8467 | len = get_rfc1002_len(work->response_buf) - |
8468 | work->next_smb2_rsp_hdr_off; | |
e2f34481 NJ |
8469 | len = ALIGN(len, 8); |
8470 | } | |
8471 | ||
08bdbc6e NJ |
8472 | if (conn->binding == false && |
8473 | le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { | |
e2f34481 | 8474 | signing_key = work->sess->smb3signingkey; |
e2f34481 | 8475 | } else { |
8e06b31e | 8476 | read_lock(&work->sess->chann_lock); |
f5a544e3 | 8477 | chann = lookup_chann_list(work->sess, work->conn); |
8e06b31e NJ |
8478 | if (!chann) { |
8479 | read_unlock(&work->sess->chann_lock); | |
e2f34481 | 8480 | return; |
8e06b31e | 8481 | } |
e2f34481 | 8482 | signing_key = chann->smb3signingkey; |
8e06b31e | 8483 | read_unlock(&work->sess->chann_lock); |
e2f34481 NJ |
8484 | } |
8485 | ||
8486 | if (!signing_key) | |
8487 | return; | |
8488 | ||
8489 | if (req_hdr->NextCommand) | |
8490 | hdr->NextCommand = cpu_to_le32(len); | |
8491 | ||
8492 | hdr->Flags |= SMB2_FLAGS_SIGNED; | |
8493 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8494 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8495 | iov[0].iov_len = len; | |
e5066499 NJ |
8496 | if (work->aux_payload_sz) { |
8497 | iov[0].iov_len -= work->aux_payload_sz; | |
8498 | iov[1].iov_base = work->aux_payload_buf; | |
8499 | iov[1].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8500 | n_vec++; |
8501 | } | |
8502 | ||
8503 | if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature)) | |
8504 | memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); | |
8505 | } | |
8506 | ||
8507 | /** | |
8508 | * smb3_preauth_hash_rsp() - handler for computing preauth hash on response | |
8509 | * @work: smb work containing response buffer | |
8510 | * | |
8511 | */ | |
8512 | void smb3_preauth_hash_rsp(struct ksmbd_work *work) | |
8513 | { | |
8514 | struct ksmbd_conn *conn = work->conn; | |
8515 | struct ksmbd_session *sess = work->sess; | |
8516 | struct smb2_hdr *req, *rsp; | |
8517 | ||
8518 | if (conn->dialect != SMB311_PROT_ID) | |
8519 | return; | |
8520 | ||
8521 | WORK_BUFFERS(work, req, rsp); | |
8522 | ||
442ff9eb NJ |
8523 | if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE && |
8524 | conn->preauth_info) | |
cb451720 | 8525 | ksmbd_gen_preauth_integrity_hash(conn, work->response_buf, |
070fb21e | 8526 | conn->preauth_info->Preauth_HashValue); |
e2f34481 | 8527 | |
f5a544e3 | 8528 | if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) { |
e2f34481 NJ |
8529 | __u8 *hash_value; |
8530 | ||
f5a544e3 NJ |
8531 | if (conn->binding) { |
8532 | struct preauth_session *preauth_sess; | |
8533 | ||
8534 | preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); | |
8535 | if (!preauth_sess) | |
8536 | return; | |
8537 | hash_value = preauth_sess->Preauth_HashValue; | |
8538 | } else { | |
8539 | hash_value = sess->Preauth_HashValue; | |
8540 | if (!hash_value) | |
8541 | return; | |
8542 | } | |
cb451720 | 8543 | ksmbd_gen_preauth_integrity_hash(conn, work->response_buf, |
070fb21e | 8544 | hash_value); |
e2f34481 NJ |
8545 | } |
8546 | } | |
8547 | ||
2dd9129f | 8548 | static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type) |
e2f34481 | 8549 | { |
2dd9129f NJ |
8550 | struct smb2_transform_hdr *tr_hdr = tr_buf + 4; |
8551 | struct smb2_hdr *hdr = smb2_get_msg(old_buf); | |
e2f34481 NJ |
8552 | unsigned int orig_len = get_rfc1002_len(old_buf); |
8553 | ||
56b401fb | 8554 | /* tr_buf must be cleared by the caller */ |
e2f34481 NJ |
8555 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; |
8556 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
4355a8fd | 8557 | tr_hdr->Flags = cpu_to_le16(TRANSFORM_FLAG_ENCRYPTED); |
5a0ca770 NJ |
8558 | if (cipher_type == SMB2_ENCRYPTION_AES128_GCM || |
8559 | cipher_type == SMB2_ENCRYPTION_AES256_GCM) | |
8560 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); | |
e2f34481 | 8561 | else |
5a0ca770 | 8562 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
e2f34481 | 8563 | memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8); |
2dd9129f NJ |
8564 | inc_rfc1001_len(tr_buf, sizeof(struct smb2_transform_hdr)); |
8565 | inc_rfc1001_len(tr_buf, orig_len); | |
e2f34481 NJ |
8566 | } |
8567 | ||
8568 | int smb3_encrypt_resp(struct ksmbd_work *work) | |
8569 | { | |
e5066499 | 8570 | char *buf = work->response_buf; |
e2f34481 NJ |
8571 | struct kvec iov[3]; |
8572 | int rc = -ENOMEM; | |
e5066499 | 8573 | int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0); |
e2f34481 NJ |
8574 | |
8575 | if (ARRAY_SIZE(iov) < rq_nvec) | |
8576 | return -ENOMEM; | |
8577 | ||
2dd9129f NJ |
8578 | work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL); |
8579 | if (!work->tr_buf) | |
e2f34481 NJ |
8580 | return rc; |
8581 | ||
8582 | /* fill transform header */ | |
2dd9129f | 8583 | fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type); |
e2f34481 | 8584 | |
2dd9129f NJ |
8585 | iov[0].iov_base = work->tr_buf; |
8586 | iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4; | |
e2f34481 NJ |
8587 | buf_size += iov[0].iov_len - 4; |
8588 | ||
8589 | iov[1].iov_base = buf + 4; | |
8590 | iov[1].iov_len = get_rfc1002_len(buf); | |
e5066499 NJ |
8591 | if (work->aux_payload_sz) { |
8592 | iov[1].iov_len = work->resp_hdr_sz - 4; | |
e2f34481 | 8593 | |
e5066499 NJ |
8594 | iov[2].iov_base = work->aux_payload_buf; |
8595 | iov[2].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8596 | buf_size += iov[2].iov_len; |
8597 | } | |
8598 | buf_size += iov[1].iov_len; | |
8599 | work->resp_hdr_sz = iov[1].iov_len; | |
8600 | ||
af705ef2 | 8601 | rc = ksmbd_crypt_message(work, iov, rq_nvec, 1); |
e2f34481 NJ |
8602 | if (rc) |
8603 | return rc; | |
8604 | ||
8605 | memmove(buf, iov[1].iov_base, iov[1].iov_len); | |
2dd9129f | 8606 | *(__be32 *)work->tr_buf = cpu_to_be32(buf_size); |
e2f34481 NJ |
8607 | |
8608 | return rc; | |
8609 | } | |
8610 | ||
f4228b67 | 8611 | bool smb3_is_transform_hdr(void *buf) |
e2f34481 | 8612 | { |
2dd9129f | 8613 | struct smb2_transform_hdr *trhdr = smb2_get_msg(buf); |
e2f34481 NJ |
8614 | |
8615 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
8616 | } | |
8617 | ||
8618 | int smb3_decrypt_req(struct ksmbd_work *work) | |
8619 | { | |
e2f34481 | 8620 | struct ksmbd_session *sess; |
e5066499 | 8621 | char *buf = work->request_buf; |
e2f34481 NJ |
8622 | unsigned int pdu_length = get_rfc1002_len(buf); |
8623 | struct kvec iov[2]; | |
2dd9129f NJ |
8624 | int buf_data_size = pdu_length - sizeof(struct smb2_transform_hdr); |
8625 | struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf); | |
e2f34481 NJ |
8626 | int rc = 0; |
8627 | ||
c7705eec | 8628 | if (buf_data_size < sizeof(struct smb2_hdr)) { |
bde1694a NJ |
8629 | pr_err("Transform message is too small (%u)\n", |
8630 | pdu_length); | |
e2f34481 NJ |
8631 | return -ECONNABORTED; |
8632 | } | |
8633 | ||
c7705eec | 8634 | if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) { |
bde1694a | 8635 | pr_err("Transform message is broken\n"); |
e2f34481 NJ |
8636 | return -ECONNABORTED; |
8637 | } | |
8638 | ||
af705ef2 | 8639 | sess = ksmbd_session_lookup_all(work->conn, le64_to_cpu(tr_hdr->SessionId)); |
4227f811 NJ |
8640 | if (!sess) { |
8641 | pr_err("invalid session id(%llx) in transform header\n", | |
8642 | le64_to_cpu(tr_hdr->SessionId)); | |
8643 | return -ECONNABORTED; | |
8644 | } | |
8645 | ||
e2f34481 | 8646 | iov[0].iov_base = buf; |
2dd9129f NJ |
8647 | iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4; |
8648 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr) + 4; | |
e2f34481 | 8649 | iov[1].iov_len = buf_data_size; |
af705ef2 | 8650 | rc = ksmbd_crypt_message(work, iov, 2, 0); |
e2f34481 NJ |
8651 | if (rc) |
8652 | return rc; | |
8653 | ||
8654 | memmove(buf + 4, iov[1].iov_base, buf_data_size); | |
cb451720 | 8655 | *(__be32 *)buf = cpu_to_be32(buf_data_size); |
e2f34481 NJ |
8656 | |
8657 | return rc; | |
8658 | } | |
8659 | ||
8660 | bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work) | |
8661 | { | |
8662 | struct ksmbd_conn *conn = work->conn; | |
cb451720 | 8663 | struct smb2_hdr *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
8664 | |
8665 | if (conn->dialect < SMB30_PROT_ID) | |
8666 | return false; | |
8667 | ||
8668 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 8669 | rsp = ksmbd_resp_buf_next(work); |
e2f34481 NJ |
8670 | |
8671 | if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && | |
64b39f4a | 8672 | rsp->Status == STATUS_SUCCESS) |
e2f34481 NJ |
8673 | return true; |
8674 | return false; | |
8675 | } |