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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
7c0f6ba6 | 38 | #include <linux/uaccess.h> |
1da177e4 LT |
39 | #include "cifspdu.h" |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
d9191319 | 45 | #include "smb2proto.h" |
e28bc5b1 | 46 | #include "fscache.h" |
db223a59 | 47 | #include "smbdirect.h" |
08744015 PA |
48 | #ifdef CONFIG_CIFS_DFS_UPCALL |
49 | #include "dfs_cache.h" | |
50 | #endif | |
1da177e4 LT |
51 | |
52 | #ifdef CONFIG_CIFS_POSIX | |
53 | static struct { | |
54 | int index; | |
55 | char *name; | |
56 | } protocols[] = { | |
3979877e SF |
57 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
58 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 59 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 60 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 61 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 62 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
63 | {BAD_PROT, "\2"} |
64 | }; | |
65 | #else | |
66 | static struct { | |
67 | int index; | |
68 | char *name; | |
69 | } protocols[] = { | |
3979877e SF |
70 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
71 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 72 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 73 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 74 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
75 | {BAD_PROT, "\2"} |
76 | }; | |
77 | #endif | |
78 | ||
3979877e SF |
79 | /* define the number of elements in the cifs dialect array */ |
80 | #ifdef CONFIG_CIFS_POSIX | |
81 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 82 | #define CIFS_NUM_PROT 4 |
3979877e SF |
83 | #else |
84 | #define CIFS_NUM_PROT 2 | |
85 | #endif /* CIFS_WEAK_PW_HASH */ | |
86 | #else /* not posix */ | |
87 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 88 | #define CIFS_NUM_PROT 3 |
3979877e SF |
89 | #else |
90 | #define CIFS_NUM_PROT 1 | |
91 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
92 | #endif /* CIFS_POSIX */ | |
93 | ||
aa24d1e9 PS |
94 | /* |
95 | * Mark as invalid, all open files on tree connections since they | |
96 | * were closed when session to server was lost. | |
97 | */ | |
98 | void | |
99 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
100 | { |
101 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
102 | struct list_head *tmp; |
103 | struct list_head *tmp1; | |
1da177e4 | 104 | |
aa24d1e9 | 105 | /* list all files open on tree connection and mark them invalid */ |
3afca265 | 106 | spin_lock(&tcon->open_file_lock); |
aa24d1e9 | 107 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 108 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 109 | open_file->invalidHandle = true; |
3bc303c2 | 110 | open_file->oplock_break_cancelled = true; |
1da177e4 | 111 | } |
3afca265 | 112 | spin_unlock(&tcon->open_file_lock); |
3d4ef9a1 | 113 | |
a93864d9 RS |
114 | mutex_lock(&tcon->crfid.fid_mutex); |
115 | tcon->crfid.is_valid = false; | |
d9191319 PS |
116 | /* cached handle is not valid, so SMB2_CLOSE won't be sent below */ |
117 | close_shroot_lease_locked(&tcon->crfid); | |
a93864d9 RS |
118 | memset(tcon->crfid.fid, 0, sizeof(struct cifs_fid)); |
119 | mutex_unlock(&tcon->crfid.fid_mutex); | |
3d4ef9a1 | 120 | |
aa24d1e9 PS |
121 | /* |
122 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
123 | * to this tcon. | |
124 | */ | |
1da177e4 LT |
125 | } |
126 | ||
08744015 PA |
127 | #ifdef CONFIG_CIFS_DFS_UPCALL |
128 | static int __cifs_reconnect_tcon(const struct nls_table *nlsc, | |
129 | struct cifs_tcon *tcon) | |
130 | { | |
131 | int rc; | |
132 | struct dfs_cache_tgt_list tl; | |
133 | struct dfs_cache_tgt_iterator *it = NULL; | |
15bc77f9 | 134 | char *tree; |
08744015 PA |
135 | const char *tcp_host; |
136 | size_t tcp_host_len; | |
137 | const char *dfs_host; | |
138 | size_t dfs_host_len; | |
139 | ||
15bc77f9 AA |
140 | tree = kzalloc(MAX_TREE_SIZE, GFP_KERNEL); |
141 | if (!tree) | |
142 | return -ENOMEM; | |
143 | ||
08744015 | 144 | if (tcon->ipc) { |
74ea5f98 RS |
145 | scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", |
146 | tcon->ses->server->hostname); | |
15bc77f9 AA |
147 | rc = CIFSTCon(0, tcon->ses, tree, tcon, nlsc); |
148 | goto out; | |
08744015 PA |
149 | } |
150 | ||
15bc77f9 AA |
151 | if (!tcon->dfs_path) { |
152 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon, nlsc); | |
153 | goto out; | |
154 | } | |
08744015 PA |
155 | |
156 | rc = dfs_cache_noreq_find(tcon->dfs_path + 1, NULL, &tl); | |
157 | if (rc) | |
15bc77f9 | 158 | goto out; |
08744015 PA |
159 | |
160 | extract_unc_hostname(tcon->ses->server->hostname, &tcp_host, | |
161 | &tcp_host_len); | |
162 | ||
163 | for (it = dfs_cache_get_tgt_iterator(&tl); it; | |
164 | it = dfs_cache_get_next_tgt(&tl, it)) { | |
bacd704a PAS |
165 | const char *share, *prefix; |
166 | size_t share_len, prefix_len; | |
167 | ||
168 | rc = dfs_cache_get_tgt_share(it, &share, &share_len, &prefix, | |
169 | &prefix_len); | |
170 | if (rc) { | |
171 | cifs_dbg(VFS, "%s: failed to parse target share %d\n", | |
172 | __func__, rc); | |
173 | continue; | |
174 | } | |
08744015 | 175 | |
bacd704a | 176 | extract_unc_hostname(share, &dfs_host, &dfs_host_len); |
08744015 PA |
177 | |
178 | if (dfs_host_len != tcp_host_len | |
179 | || strncasecmp(dfs_host, tcp_host, dfs_host_len) != 0) { | |
180 | cifs_dbg(FYI, "%s: skipping %.*s, doesn't match %.*s", | |
181 | __func__, | |
182 | (int)dfs_host_len, dfs_host, | |
183 | (int)tcp_host_len, tcp_host); | |
184 | continue; | |
185 | } | |
186 | ||
bacd704a | 187 | scnprintf(tree, MAX_TREE_SIZE, "\\%.*s", (int)share_len, share); |
08744015 PA |
188 | |
189 | rc = CIFSTCon(0, tcon->ses, tree, tcon, nlsc); | |
bacd704a PAS |
190 | if (!rc) { |
191 | rc = update_super_prepath(tcon, prefix, prefix_len); | |
08744015 | 192 | break; |
bacd704a | 193 | } |
08744015 PA |
194 | if (rc == -EREMOTE) |
195 | break; | |
196 | } | |
197 | ||
198 | if (!rc) { | |
199 | if (it) | |
200 | rc = dfs_cache_noreq_update_tgthint(tcon->dfs_path + 1, | |
201 | it); | |
202 | else | |
203 | rc = -ENOENT; | |
204 | } | |
205 | dfs_cache_free_tgts(&tl); | |
15bc77f9 AA |
206 | out: |
207 | kfree(tree); | |
08744015 PA |
208 | return rc; |
209 | } | |
210 | #else | |
211 | static inline int __cifs_reconnect_tcon(const struct nls_table *nlsc, | |
212 | struct cifs_tcon *tcon) | |
213 | { | |
214 | return CIFSTCon(0, tcon->ses, tcon->treeName, tcon, nlsc); | |
215 | } | |
216 | #endif | |
217 | ||
9162ab20 JL |
218 | /* reconnect the socket, tcon, and smb session if needed */ |
219 | static int | |
96daf2b0 | 220 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 221 | { |
c4a5534a | 222 | int rc; |
96daf2b0 | 223 | struct cifs_ses *ses; |
9162ab20 JL |
224 | struct TCP_Server_Info *server; |
225 | struct nls_table *nls_codepage; | |
08744015 | 226 | int retries; |
9162ab20 JL |
227 | |
228 | /* | |
229 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
230 | * tcp and smb session status done differently for those three - in the | |
231 | * calling routine | |
232 | */ | |
233 | if (!tcon) | |
234 | return 0; | |
235 | ||
236 | ses = tcon->ses; | |
237 | server = ses->server; | |
238 | ||
239 | /* | |
240 | * only tree disconnect, open, and write, (and ulogoff which does not | |
241 | * have tcon) are allowed as we start force umount | |
242 | */ | |
243 | if (tcon->tidStatus == CifsExiting) { | |
244 | if (smb_command != SMB_COM_WRITE_ANDX && | |
245 | smb_command != SMB_COM_OPEN_ANDX && | |
246 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
247 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
248 | smb_command); | |
9162ab20 JL |
249 | return -ENODEV; |
250 | } | |
251 | } | |
252 | ||
08744015 PA |
253 | retries = server->nr_targets; |
254 | ||
9162ab20 | 255 | /* |
08744015 PA |
256 | * Give demultiplex thread up to 10 seconds to each target available for |
257 | * reconnect -- should be greater than cifs socket timeout which is 7 | |
258 | * seconds. | |
9162ab20 JL |
259 | */ |
260 | while (server->tcpStatus == CifsNeedReconnect) { | |
7ffbe655 PA |
261 | rc = wait_event_interruptible_timeout(server->response_q, |
262 | (server->tcpStatus != CifsNeedReconnect), | |
263 | 10 * HZ); | |
264 | if (rc < 0) { | |
265 | cifs_dbg(FYI, "%s: aborting reconnect due to a received" | |
266 | " signal by the process\n", __func__); | |
267 | return -ERESTARTSYS; | |
268 | } | |
9162ab20 | 269 | |
fd88ce93 | 270 | /* are we still trying to reconnect? */ |
9162ab20 JL |
271 | if (server->tcpStatus != CifsNeedReconnect) |
272 | break; | |
273 | ||
09c40b15 | 274 | if (retries && --retries) |
08744015 PA |
275 | continue; |
276 | ||
9162ab20 JL |
277 | /* |
278 | * on "soft" mounts we wait once. Hard mounts keep | |
279 | * retrying until process is killed or server comes | |
280 | * back on-line | |
281 | */ | |
d402539b | 282 | if (!tcon->retry) { |
f96637be | 283 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
284 | return -EHOSTDOWN; |
285 | } | |
08744015 | 286 | retries = server->nr_targets; |
9162ab20 JL |
287 | } |
288 | ||
289 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
290 | return 0; | |
291 | ||
292 | nls_codepage = load_nls_default(); | |
293 | ||
294 | /* | |
295 | * need to prevent multiple threads trying to simultaneously | |
296 | * reconnect the same SMB session | |
297 | */ | |
d7b619cf | 298 | mutex_lock(&ses->session_mutex); |
76e75270 SC |
299 | |
300 | /* | |
301 | * Recheck after acquire mutex. If another thread is negotiating | |
302 | * and the server never sends an answer the socket will be closed | |
303 | * and tcpStatus set to reconnect. | |
304 | */ | |
305 | if (server->tcpStatus == CifsNeedReconnect) { | |
306 | rc = -EHOSTDOWN; | |
307 | mutex_unlock(&ses->session_mutex); | |
308 | goto out; | |
309 | } | |
310 | ||
198b5682 JL |
311 | rc = cifs_negotiate_protocol(0, ses); |
312 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
313 | rc = cifs_setup_session(0, ses, nls_codepage); |
314 | ||
315 | /* do we need to reconnect tcon? */ | |
316 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 317 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
318 | goto out; |
319 | } | |
320 | ||
aa24d1e9 | 321 | cifs_mark_open_files_invalid(tcon); |
08744015 | 322 | rc = __cifs_reconnect_tcon(nls_codepage, tcon); |
d7b619cf | 323 | mutex_unlock(&ses->session_mutex); |
f96637be | 324 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 325 | |
c318e6c2 SF |
326 | if (rc) { |
327 | printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc); | |
9162ab20 | 328 | goto out; |
c318e6c2 | 329 | } |
9162ab20 | 330 | |
9162ab20 JL |
331 | atomic_inc(&tconInfoReconnectCount); |
332 | ||
333 | /* tell server Unix caps we support */ | |
864138cb | 334 | if (cap_unix(ses)) |
9162ab20 JL |
335 | reset_cifs_unix_caps(0, tcon, NULL, NULL); |
336 | ||
337 | /* | |
338 | * Removed call to reopen open files here. It is safer (and faster) to | |
339 | * reopen files one at a time as needed in read and write. | |
340 | * | |
341 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
342 | */ | |
343 | ||
344 | out: | |
345 | /* | |
346 | * Check if handle based operation so we know whether we can continue | |
347 | * or not without returning to caller to reset file handle | |
348 | */ | |
349 | switch (smb_command) { | |
350 | case SMB_COM_READ_ANDX: | |
351 | case SMB_COM_WRITE_ANDX: | |
352 | case SMB_COM_CLOSE: | |
353 | case SMB_COM_FIND_CLOSE2: | |
354 | case SMB_COM_LOCKING_ANDX: | |
355 | rc = -EAGAIN; | |
356 | } | |
357 | ||
358 | unload_nls(nls_codepage); | |
359 | return rc; | |
360 | } | |
361 | ||
ad7a2926 SF |
362 | /* Allocate and return pointer to an SMB request buffer, and set basic |
363 | SMB information in the SMB header. If the return code is zero, this | |
364 | function must have filled in request_buf pointer */ | |
1da177e4 | 365 | static int |
96daf2b0 | 366 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 367 | void **request_buf) |
1da177e4 | 368 | { |
f569599a | 369 | int rc; |
1da177e4 | 370 | |
9162ab20 | 371 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 372 | if (rc) |
1da177e4 LT |
373 | return rc; |
374 | ||
375 | *request_buf = cifs_small_buf_get(); | |
376 | if (*request_buf == NULL) { | |
377 | /* BB should we add a retry in here if not a writepage? */ | |
378 | return -ENOMEM; | |
379 | } | |
380 | ||
63135e08 | 381 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 382 | tcon, wct); |
1da177e4 | 383 | |
790fe579 SF |
384 | if (tcon != NULL) |
385 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 386 | |
f569599a | 387 | return 0; |
5815449d SF |
388 | } |
389 | ||
12b3b8ff | 390 | int |
50c2f753 | 391 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 392 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
393 | { |
394 | int rc; | |
50c2f753 | 395 | struct smb_hdr *buffer; |
12b3b8ff | 396 | |
5815449d | 397 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 398 | if (rc) |
12b3b8ff SF |
399 | return rc; |
400 | ||
04fdabe1 | 401 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 402 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
403 | if (ses->capabilities & CAP_UNICODE) |
404 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 405 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
406 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
407 | ||
408 | /* uid, tid can stay at zero as set in header assemble */ | |
409 | ||
50c2f753 | 410 | /* BB add support for turning on the signing when |
12b3b8ff SF |
411 | this function is used after 1st of session setup requests */ |
412 | ||
413 | return rc; | |
414 | } | |
1da177e4 LT |
415 | |
416 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
417 | static int | |
96daf2b0 | 418 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 419 | void **request_buf, void **response_buf) |
1da177e4 | 420 | { |
1da177e4 LT |
421 | *request_buf = cifs_buf_get(); |
422 | if (*request_buf == NULL) { | |
423 | /* BB should we add a retry in here if not a writepage? */ | |
424 | return -ENOMEM; | |
425 | } | |
426 | /* Although the original thought was we needed the response buf for */ | |
427 | /* potential retries of smb operations it turns out we can determine */ | |
428 | /* from the mid flags when the request buffer can be resent without */ | |
429 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 430 | if (response_buf) |
50c2f753 | 431 | *response_buf = *request_buf; |
1da177e4 LT |
432 | |
433 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 434 | wct); |
1da177e4 | 435 | |
790fe579 SF |
436 | if (tcon != NULL) |
437 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 438 | |
f569599a JL |
439 | return 0; |
440 | } | |
441 | ||
442 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
443 | static int | |
96daf2b0 | 444 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
445 | void **request_buf, void **response_buf) |
446 | { | |
447 | int rc; | |
448 | ||
449 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
450 | if (rc) | |
451 | return rc; | |
452 | ||
453 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
454 | } | |
455 | ||
456 | static int | |
96daf2b0 | 457 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
458 | void **request_buf, void **response_buf) |
459 | { | |
460 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
461 | return -EHOSTDOWN; | |
462 | ||
463 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
464 | } |
465 | ||
50c2f753 | 466 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 467 | { |
12df83c9 JL |
468 | unsigned int total_size; |
469 | ||
470 | /* check for plausible wct */ | |
471 | if (pSMB->hdr.WordCount < 10) | |
472 | goto vt2_err; | |
1da177e4 | 473 | |
1da177e4 | 474 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
475 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
476 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
477 | goto vt2_err; | |
478 | ||
12df83c9 JL |
479 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
480 | if (total_size >= 512) | |
481 | goto vt2_err; | |
482 | ||
fd5707e1 JL |
483 | /* check that bcc is at least as big as parms + data, and that it is |
484 | * less than negotiated smb buffer | |
485 | */ | |
12df83c9 JL |
486 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
487 | if (total_size > get_bcc(&pSMB->hdr) || | |
488 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
489 | goto vt2_err; | |
490 | ||
491 | return 0; | |
492 | vt2_err: | |
50c2f753 | 493 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 494 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 495 | return -EINVAL; |
1da177e4 | 496 | } |
690c522f | 497 | |
31d9e2bd | 498 | static int |
3f618223 | 499 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
500 | { |
501 | int rc = 0; | |
502 | u16 count; | |
503 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 504 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
505 | |
506 | count = get_bcc(&pSMBr->hdr); | |
507 | if (count < SMB1_CLIENT_GUID_SIZE) | |
508 | return -EIO; | |
509 | ||
510 | spin_lock(&cifs_tcp_ses_lock); | |
511 | if (server->srv_count > 1) { | |
512 | spin_unlock(&cifs_tcp_ses_lock); | |
513 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
514 | cifs_dbg(FYI, "server UID changed\n"); | |
515 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
516 | } | |
517 | } else { | |
518 | spin_unlock(&cifs_tcp_ses_lock); | |
519 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
520 | } | |
521 | ||
522 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 523 | server->sec_ntlmssp = true; |
31d9e2bd JL |
524 | } else { |
525 | count -= SMB1_CLIENT_GUID_SIZE; | |
526 | rc = decode_negTokenInit( | |
527 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
528 | if (rc != 1) | |
529 | return -EINVAL; | |
31d9e2bd JL |
530 | } |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
9ddec561 | 535 | int |
38d77c50 | 536 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 537 | { |
50285882 JL |
538 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
539 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
540 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
541 | ||
542 | /* | |
543 | * Is signing required by mnt options? If not then check | |
544 | * global_secflags to see if it is there. | |
545 | */ | |
546 | if (!mnt_sign_required) | |
547 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
548 | CIFSSEC_MUST_SIGN); | |
549 | ||
550 | /* | |
551 | * If signing is required then it's automatically enabled too, | |
552 | * otherwise, check to see if the secflags allow it. | |
553 | */ | |
554 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
555 | (global_secflags & CIFSSEC_MAY_SIGN); | |
556 | ||
557 | /* If server requires signing, does client allow it? */ | |
558 | if (srv_sign_required) { | |
559 | if (!mnt_sign_enabled) { | |
560 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
561 | return -ENOTSUPP; | |
9ddec561 | 562 | } |
38d77c50 JL |
563 | server->sign = true; |
564 | } | |
565 | ||
566 | /* If client requires signing, does server allow it? */ | |
567 | if (mnt_sign_required) { | |
568 | if (!srv_sign_enabled) { | |
569 | cifs_dbg(VFS, "Server does not support signing!"); | |
570 | return -ENOTSUPP; | |
571 | } | |
572 | server->sign = true; | |
9ddec561 JL |
573 | } |
574 | ||
bb4c0419 LL |
575 | if (cifs_rdma_enabled(server) && server->sign) |
576 | cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled"); | |
577 | ||
9ddec561 JL |
578 | return 0; |
579 | } | |
580 | ||
2190eca1 JL |
581 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
582 | static int | |
3f618223 | 583 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
584 | { |
585 | __s16 tmp; | |
586 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
587 | ||
588 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
589 | return -EOPNOTSUPP; | |
590 | ||
2190eca1 JL |
591 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
592 | server->maxReq = min_t(unsigned int, | |
593 | le16_to_cpu(rsp->MaxMpxCount), | |
594 | cifs_max_pending); | |
595 | set_credits(server, server->maxReq); | |
596 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
1f641d94 JS |
597 | /* set up max_read for readpages check */ |
598 | server->max_read = server->maxBuf; | |
2190eca1 JL |
599 | /* even though we do not use raw we might as well set this |
600 | accurately, in case we ever find a need for it */ | |
601 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
602 | server->max_rw = 0xFF00; | |
603 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
604 | } else { | |
605 | server->max_rw = 0;/* do not need to use raw anyway */ | |
606 | server->capabilities = CAP_MPX_MODE; | |
607 | } | |
608 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
609 | if (tmp == -1) { | |
610 | /* OS/2 often does not set timezone therefore | |
611 | * we must use server time to calc time zone. | |
612 | * Could deviate slightly from the right zone. | |
613 | * Smallest defined timezone difference is 15 minutes | |
614 | * (i.e. Nepal). Rounding up/down is done to match | |
615 | * this requirement. | |
616 | */ | |
617 | int val, seconds, remain, result; | |
95390201 AB |
618 | struct timespec64 ts; |
619 | time64_t utc = ktime_get_real_seconds(); | |
2190eca1 JL |
620 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
621 | rsp->SrvTime.Time, 0); | |
95390201 AB |
622 | cifs_dbg(FYI, "SrvTime %lld sec since 1970 (utc: %lld) diff: %lld\n", |
623 | ts.tv_sec, utc, | |
624 | utc - ts.tv_sec); | |
e37fea58 | 625 | val = (int)(utc - ts.tv_sec); |
2190eca1 JL |
626 | seconds = abs(val); |
627 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
628 | remain = seconds % MIN_TZ_ADJ; | |
629 | if (remain >= (MIN_TZ_ADJ / 2)) | |
630 | result += MIN_TZ_ADJ; | |
631 | if (val < 0) | |
632 | result = -result; | |
633 | server->timeAdj = result; | |
634 | } else { | |
635 | server->timeAdj = (int)tmp; | |
636 | server->timeAdj *= 60; /* also in seconds */ | |
637 | } | |
638 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
639 | ||
640 | ||
641 | /* BB get server time for time conversions and add | |
642 | code to use it and timezone since this is not UTC */ | |
643 | ||
644 | if (rsp->EncryptionKeyLength == | |
645 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
646 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
647 | CIFS_CRYPTO_KEY_SIZE); | |
648 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
649 | return -EIO; /* need cryptkey unless plain text */ | |
650 | } | |
651 | ||
652 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
653 | return 0; | |
654 | } | |
655 | #else | |
656 | static inline int | |
3f618223 | 657 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
658 | { |
659 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
660 | return -EOPNOTSUPP; | |
661 | } | |
662 | #endif | |
663 | ||
9193400b | 664 | static bool |
3f618223 | 665 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 666 | { |
3f618223 JL |
667 | switch (sectype) { |
668 | case RawNTLMSSP: | |
669 | case Kerberos: | |
9193400b | 670 | return true; |
3f618223 JL |
671 | case Unspecified: |
672 | if (global_secflags & | |
673 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
674 | return true; | |
675 | /* Fallthrough */ | |
676 | default: | |
677 | return false; | |
678 | } | |
9193400b JL |
679 | } |
680 | ||
1da177e4 | 681 | int |
286170aa | 682 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
683 | { |
684 | NEGOTIATE_REQ *pSMB; | |
685 | NEGOTIATE_RSP *pSMBr; | |
686 | int rc = 0; | |
687 | int bytes_returned; | |
3979877e | 688 | int i; |
3534b850 | 689 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
690 | u16 count; |
691 | ||
3534b850 JL |
692 | if (!server) { |
693 | WARN(1, "%s: server is NULL!\n", __func__); | |
694 | return -EIO; | |
1da177e4 | 695 | } |
3534b850 | 696 | |
1da177e4 LT |
697 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
698 | (void **) &pSMB, (void **) &pSMBr); | |
699 | if (rc) | |
700 | return rc; | |
750d1151 | 701 | |
88257360 | 702 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 703 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 704 | |
3f618223 | 705 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 706 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
707 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
708 | } | |
50c2f753 | 709 | |
3979877e | 710 | count = 0; |
bcfb84a9 SR |
711 | /* |
712 | * We know that all the name entries in the protocols array | |
713 | * are short (< 16 bytes anyway) and are NUL terminated. | |
714 | */ | |
50c2f753 | 715 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
bcfb84a9 SR |
716 | size_t len = strlen(protocols[i].name) + 1; |
717 | ||
718 | memcpy(pSMB->DialectsArray+count, protocols[i].name, len); | |
719 | count += len; | |
3979877e | 720 | } |
be8e3b00 | 721 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
722 | pSMB->ByteCount = cpu_to_le16(count); |
723 | ||
724 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
725 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 726 | if (rc != 0) |
254e55ed SF |
727 | goto neg_err_exit; |
728 | ||
9bf67e51 | 729 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 730 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 731 | /* Check wct = 1 error case */ |
9bf67e51 | 732 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 733 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 734 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
735 | could not negotiate a common dialect */ |
736 | rc = -EOPNOTSUPP; | |
737 | goto neg_err_exit; | |
790fe579 | 738 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 739 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 740 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 741 | goto signing_check; |
790fe579 | 742 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
743 | /* unknown wct */ |
744 | rc = -EOPNOTSUPP; | |
745 | goto neg_err_exit; | |
746 | } | |
2190eca1 JL |
747 | /* else wct == 17, NTLM or better */ |
748 | ||
96daf2b0 SF |
749 | server->sec_mode = pSMBr->SecurityMode; |
750 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 751 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 752 | |
254e55ed SF |
753 | /* one byte, so no need to convert this or EncryptionKeyLen from |
754 | little endian */ | |
10b9b98e PS |
755 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
756 | cifs_max_pending); | |
45275789 | 757 | set_credits(server, server->maxReq); |
254e55ed | 758 | /* probably no need to store and check maxvcs */ |
c974befa | 759 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
1f641d94 JS |
760 | /* set up max_read for readpages check */ |
761 | server->max_read = server->maxBuf; | |
eca6acf9 | 762 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 763 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 764 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
765 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
766 | server->timeAdj *= 60; | |
31d9e2bd | 767 | |
e598d1d8 JL |
768 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
769 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 770 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 771 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
772 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
773 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 774 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 775 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 776 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 777 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
778 | } else { |
779 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 780 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 781 | } |
254e55ed SF |
782 | |
783 | signing_check: | |
9ddec561 | 784 | if (!rc) |
38d77c50 | 785 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 786 | neg_err_exit: |
4a6d87f1 | 787 | cifs_buf_release(pSMB); |
254e55ed | 788 | |
f96637be | 789 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
790 | return rc; |
791 | } | |
792 | ||
793 | int | |
2e6e02ab | 794 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
795 | { |
796 | struct smb_hdr *smb_buffer; | |
1da177e4 | 797 | int rc = 0; |
1da177e4 | 798 | |
f96637be | 799 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 800 | |
f1987b44 JL |
801 | /* BB: do we need to check this? These should never be NULL. */ |
802 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
803 | return -EIO; | |
1da177e4 | 804 | |
f1987b44 JL |
805 | /* |
806 | * No need to return error on this operation if tid invalidated and | |
807 | * closed on server already e.g. due to tcp session crashing. Also, | |
808 | * the tcon is no longer on the list, so no need to take lock before | |
809 | * checking this. | |
810 | */ | |
268875b9 | 811 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 812 | return 0; |
1da177e4 | 813 | |
50c2f753 | 814 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 815 | (void **)&smb_buffer); |
f1987b44 | 816 | if (rc) |
1da177e4 | 817 | return rc; |
133672ef | 818 | |
792af7b0 | 819 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 820 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 821 | if (rc) |
f96637be | 822 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 823 | |
50c2f753 | 824 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 825 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
826 | if (rc == -EAGAIN) |
827 | rc = 0; | |
828 | ||
829 | return rc; | |
830 | } | |
831 | ||
766fdbb5 JL |
832 | /* |
833 | * This is a no-op for now. We're not really interested in the reply, but | |
834 | * rather in the fact that the server sent one and that server->lstrp | |
835 | * gets updated. | |
836 | * | |
837 | * FIXME: maybe we should consider checking that the reply matches request? | |
838 | */ | |
839 | static void | |
840 | cifs_echo_callback(struct mid_q_entry *mid) | |
841 | { | |
842 | struct TCP_Server_Info *server = mid->callback_data; | |
34f4deb7 | 843 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
766fdbb5 JL |
844 | |
845 | DeleteMidQEntry(mid); | |
34f4deb7 | 846 | add_credits(server, &credits, CIFS_ECHO_OP); |
766fdbb5 JL |
847 | } |
848 | ||
849 | int | |
850 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
851 | { | |
852 | ECHO_REQ *smb; | |
853 | int rc = 0; | |
738f9de5 PS |
854 | struct kvec iov[2]; |
855 | struct smb_rqst rqst = { .rq_iov = iov, | |
856 | .rq_nvec = 2 }; | |
766fdbb5 | 857 | |
f96637be | 858 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
859 | |
860 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
861 | if (rc) | |
862 | return rc; | |
863 | ||
26c9cb66 SF |
864 | if (server->capabilities & CAP_UNICODE) |
865 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
866 | ||
766fdbb5 | 867 | /* set up echo request */ |
5443d130 | 868 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
869 | smb->hdr.WordCount = 1; |
870 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 871 | put_bcc(1, &smb->hdr); |
766fdbb5 | 872 | smb->Data[0] = 'a'; |
be8e3b00 | 873 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
874 | |
875 | iov[0].iov_len = 4; | |
876 | iov[0].iov_base = smb; | |
877 | iov[1].iov_len = get_rfc1002_length(smb); | |
878 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 879 | |
9b7c18a2 | 880 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
392e1c5d | 881 | server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL); |
766fdbb5 | 882 | if (rc) |
f96637be | 883 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
884 | |
885 | cifs_small_buf_release(smb); | |
886 | ||
887 | return rc; | |
888 | } | |
889 | ||
1da177e4 | 890 | int |
58c45c58 | 891 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 892 | { |
1da177e4 LT |
893 | LOGOFF_ANDX_REQ *pSMB; |
894 | int rc = 0; | |
1da177e4 | 895 | |
f96637be | 896 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 897 | |
14fbf50d JL |
898 | /* |
899 | * BB: do we need to check validity of ses and server? They should | |
900 | * always be valid since we have an active reference. If not, that | |
901 | * should probably be a BUG() | |
902 | */ | |
903 | if (!ses || !ses->server) | |
3b795210 SF |
904 | return -EIO; |
905 | ||
d7b619cf | 906 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
907 | if (ses->need_reconnect) |
908 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
909 | already closed due to reconnect */ | |
1da177e4 LT |
910 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
911 | if (rc) { | |
d7b619cf | 912 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
913 | return rc; |
914 | } | |
915 | ||
88257360 | 916 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 917 | |
38d77c50 JL |
918 | if (ses->server->sign) |
919 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
920 | |
921 | pSMB->hdr.Uid = ses->Suid; | |
922 | ||
923 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 924 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 925 | cifs_small_buf_release(pSMB); |
3b795210 | 926 | session_already_dead: |
d7b619cf | 927 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
928 | |
929 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 930 | since server closed smb session, no sense reporting |
1da177e4 LT |
931 | error */ |
932 | if (rc == -EAGAIN) | |
933 | rc = 0; | |
934 | return rc; | |
935 | } | |
936 | ||
2d785a50 | 937 | int |
6d5786a3 PS |
938 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
939 | const char *fileName, __u16 type, | |
940 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
941 | { |
942 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
943 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
944 | struct unlink_psx_rq *pRqD; | |
945 | int name_len; | |
946 | int rc = 0; | |
947 | int bytes_returned = 0; | |
948 | __u16 params, param_offset, offset, byte_count; | |
949 | ||
f96637be | 950 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
951 | PsxDelete: |
952 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
953 | (void **) &pSMBr); | |
954 | if (rc) | |
955 | return rc; | |
956 | ||
957 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
958 | name_len = | |
acbbb76a SF |
959 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
960 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
961 | name_len++; /* trailing null */ |
962 | name_len *= 2; | |
340625e6 RS |
963 | } else { |
964 | name_len = copy_path_name(pSMB->FileName, fileName); | |
2d785a50 SF |
965 | } |
966 | ||
967 | params = 6 + name_len; | |
968 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
969 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
970 | pSMB->MaxSetupCount = 0; | |
971 | pSMB->Reserved = 0; | |
972 | pSMB->Flags = 0; | |
973 | pSMB->Timeout = 0; | |
974 | pSMB->Reserved2 = 0; | |
975 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
976 | InformationLevel) - 4; | |
977 | offset = param_offset + params; | |
978 | ||
979 | /* Setup pointer to Request Data (inode type) */ | |
980 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
981 | pRqD->type = cpu_to_le16(type); | |
982 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
983 | pSMB->DataOffset = cpu_to_le16(offset); | |
984 | pSMB->SetupCount = 1; | |
985 | pSMB->Reserved3 = 0; | |
986 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
987 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
988 | ||
989 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
990 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
991 | pSMB->ParameterCount = cpu_to_le16(params); | |
992 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
993 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
994 | pSMB->Reserved4 = 0; | |
be8e3b00 | 995 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
996 | pSMB->ByteCount = cpu_to_le16(byte_count); |
997 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
998 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 999 | if (rc) |
f96637be | 1000 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
1001 | cifs_buf_release(pSMB); |
1002 | ||
44c58186 | 1003 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
1004 | |
1005 | if (rc == -EAGAIN) | |
1006 | goto PsxDelete; | |
1007 | ||
1008 | return rc; | |
1009 | } | |
1010 | ||
1da177e4 | 1011 | int |
ed6875e0 PS |
1012 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
1013 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
1014 | { |
1015 | DELETE_FILE_REQ *pSMB = NULL; | |
1016 | DELETE_FILE_RSP *pSMBr = NULL; | |
1017 | int rc = 0; | |
1018 | int bytes_returned; | |
1019 | int name_len; | |
2baa2682 | 1020 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
1021 | |
1022 | DelFileRetry: | |
1023 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
1024 | (void **) &pSMBr); | |
1025 | if (rc) | |
1026 | return rc; | |
1027 | ||
1028 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
1029 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
1030 | PATH_MAX, cifs_sb->local_nls, | |
1031 | remap); | |
1da177e4 LT |
1032 | name_len++; /* trailing null */ |
1033 | name_len *= 2; | |
340625e6 RS |
1034 | } else { |
1035 | name_len = copy_path_name(pSMB->fileName, name); | |
1da177e4 LT |
1036 | } |
1037 | pSMB->SearchAttributes = | |
1038 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
1039 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1040 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1041 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1042 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1043 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1044 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 1045 | if (rc) |
f96637be | 1046 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
1047 | |
1048 | cifs_buf_release(pSMB); | |
1049 | if (rc == -EAGAIN) | |
1050 | goto DelFileRetry; | |
1051 | ||
1052 | return rc; | |
1053 | } | |
1054 | ||
1055 | int | |
f958ca5d PS |
1056 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
1057 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
1058 | { |
1059 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
1060 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
1061 | int rc = 0; | |
1062 | int bytes_returned; | |
1063 | int name_len; | |
2baa2682 | 1064 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 1065 | |
f96637be | 1066 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
1067 | RmDirRetry: |
1068 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1069 | (void **) &pSMBr); | |
1070 | if (rc) | |
1071 | return rc; | |
1072 | ||
1073 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
1074 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
1075 | PATH_MAX, cifs_sb->local_nls, | |
1076 | remap); | |
1da177e4 LT |
1077 | name_len++; /* trailing null */ |
1078 | name_len *= 2; | |
340625e6 RS |
1079 | } else { |
1080 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1084 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1085 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1086 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1087 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1088 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 1089 | if (rc) |
f96637be | 1090 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
1091 | |
1092 | cifs_buf_release(pSMB); | |
1093 | if (rc == -EAGAIN) | |
1094 | goto RmDirRetry; | |
1095 | return rc; | |
1096 | } | |
1097 | ||
1098 | int | |
c3ca78e2 SF |
1099 | CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode, |
1100 | struct cifs_tcon *tcon, const char *name, | |
f436720e | 1101 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
1102 | { |
1103 | int rc = 0; | |
1104 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
1105 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
1106 | int bytes_returned; | |
1107 | int name_len; | |
2baa2682 | 1108 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 1109 | |
f96637be | 1110 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
1111 | MkDirRetry: |
1112 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1113 | (void **) &pSMBr); | |
1114 | if (rc) | |
1115 | return rc; | |
1116 | ||
1117 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 1118 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
1119 | PATH_MAX, cifs_sb->local_nls, |
1120 | remap); | |
1da177e4 LT |
1121 | name_len++; /* trailing null */ |
1122 | name_len *= 2; | |
340625e6 RS |
1123 | } else { |
1124 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
1125 | } |
1126 | ||
1127 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1128 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1129 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1130 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1131 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1132 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1133 | if (rc) |
f96637be | 1134 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 1135 | |
1da177e4 LT |
1136 | cifs_buf_release(pSMB); |
1137 | if (rc == -EAGAIN) | |
1138 | goto MkDirRetry; | |
1139 | return rc; | |
1140 | } | |
1141 | ||
2dd29d31 | 1142 | int |
6d5786a3 PS |
1143 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1144 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1145 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1146 | const char *name, const struct nls_table *nls_codepage, | |
1147 | int remap) | |
2dd29d31 SF |
1148 | { |
1149 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1150 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1151 | int name_len; | |
1152 | int rc = 0; | |
1153 | int bytes_returned = 0; | |
2dd29d31 | 1154 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1155 | OPEN_PSX_REQ *pdata; |
1156 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1157 | |
f96637be | 1158 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1159 | PsxCreat: |
1160 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1161 | (void **) &pSMBr); | |
1162 | if (rc) | |
1163 | return rc; | |
1164 | ||
1165 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1166 | name_len = | |
acbbb76a SF |
1167 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1168 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1169 | name_len++; /* trailing null */ |
1170 | name_len *= 2; | |
340625e6 RS |
1171 | } else { |
1172 | name_len = copy_path_name(pSMB->FileName, name); | |
2dd29d31 SF |
1173 | } |
1174 | ||
1175 | params = 6 + name_len; | |
1176 | count = sizeof(OPEN_PSX_REQ); | |
1177 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1178 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1179 | pSMB->MaxSetupCount = 0; | |
1180 | pSMB->Reserved = 0; | |
1181 | pSMB->Flags = 0; | |
1182 | pSMB->Timeout = 0; | |
1183 | pSMB->Reserved2 = 0; | |
1184 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1185 | InformationLevel) - 4; |
2dd29d31 | 1186 | offset = param_offset + params; |
2dd29d31 | 1187 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1188 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1189 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1190 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1191 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1192 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1193 | pSMB->DataOffset = cpu_to_le16(offset); | |
1194 | pSMB->SetupCount = 1; | |
1195 | pSMB->Reserved3 = 0; | |
1196 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1197 | byte_count = 3 /* pad */ + params + count; | |
1198 | ||
1199 | pSMB->DataCount = cpu_to_le16(count); | |
1200 | pSMB->ParameterCount = cpu_to_le16(params); | |
1201 | pSMB->TotalDataCount = pSMB->DataCount; | |
1202 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1203 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1204 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1205 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1206 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1207 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1208 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1209 | if (rc) { | |
f96637be | 1210 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1211 | goto psx_create_err; |
1212 | } | |
1213 | ||
f96637be | 1214 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1215 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1216 | ||
820a803f | 1217 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1218 | rc = -EIO; /* bad smb */ |
1219 | goto psx_create_err; | |
1220 | } | |
1221 | ||
1222 | /* copy return information to pRetData */ | |
50c2f753 | 1223 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1224 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1225 | |
2dd29d31 | 1226 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1227 | if (netfid) |
2dd29d31 SF |
1228 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1229 | /* Let caller know file was created so we can set the mode. */ | |
1230 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1231 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1232 | *pOplock |= CIFS_CREATE_ACTION; |
1233 | /* check to make sure response data is there */ | |
8f2376ad CG |
1234 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1235 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1236 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1237 | } else { |
820a803f | 1238 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1239 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1240 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1241 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1242 | goto psx_create_err; |
1243 | } | |
50c2f753 | 1244 | memcpy((char *) pRetData, |
cbac3cba | 1245 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1246 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1247 | } |
2dd29d31 SF |
1248 | |
1249 | psx_create_err: | |
1250 | cifs_buf_release(pSMB); | |
1251 | ||
65bc98b0 | 1252 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1253 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1254 | else |
44c58186 | 1255 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1256 | |
1257 | if (rc == -EAGAIN) | |
1258 | goto PsxCreat; | |
1259 | ||
50c2f753 | 1260 | return rc; |
2dd29d31 SF |
1261 | } |
1262 | ||
a9d02ad4 SF |
1263 | static __u16 convert_disposition(int disposition) |
1264 | { | |
1265 | __u16 ofun = 0; | |
1266 | ||
1267 | switch (disposition) { | |
1268 | case FILE_SUPERSEDE: | |
1269 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1270 | break; | |
1271 | case FILE_OPEN: | |
1272 | ofun = SMBOPEN_OAPPEND; | |
1273 | break; | |
1274 | case FILE_CREATE: | |
1275 | ofun = SMBOPEN_OCREATE; | |
1276 | break; | |
1277 | case FILE_OPEN_IF: | |
1278 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1279 | break; | |
1280 | case FILE_OVERWRITE: | |
1281 | ofun = SMBOPEN_OTRUNC; | |
1282 | break; | |
1283 | case FILE_OVERWRITE_IF: | |
1284 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1285 | break; | |
1286 | default: | |
f96637be | 1287 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1288 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1289 | } | |
1290 | return ofun; | |
1291 | } | |
1292 | ||
35fc37d5 JL |
1293 | static int |
1294 | access_flags_to_smbopen_mode(const int access_flags) | |
1295 | { | |
1296 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1297 | ||
1298 | if (masked_flags == GENERIC_READ) | |
1299 | return SMBOPEN_READ; | |
1300 | else if (masked_flags == GENERIC_WRITE) | |
1301 | return SMBOPEN_WRITE; | |
1302 | ||
1303 | /* just go for read/write */ | |
1304 | return SMBOPEN_READWRITE; | |
1305 | } | |
1306 | ||
a9d02ad4 | 1307 | int |
6d5786a3 | 1308 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1309 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1310 | const int access_flags, const int create_options, __u16 *netfid, |
1311 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1312 | const struct nls_table *nls_codepage, int remap) |
1313 | { | |
1314 | int rc = -EACCES; | |
1315 | OPENX_REQ *pSMB = NULL; | |
1316 | OPENX_RSP *pSMBr = NULL; | |
1317 | int bytes_returned; | |
1318 | int name_len; | |
1319 | __u16 count; | |
1320 | ||
1321 | OldOpenRetry: | |
1322 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1323 | (void **) &pSMBr); | |
1324 | if (rc) | |
1325 | return rc; | |
1326 | ||
1327 | pSMB->AndXCommand = 0xFF; /* none */ | |
1328 | ||
1329 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1330 | count = 1; /* account for one byte pad to word boundary */ | |
1331 | name_len = | |
acbbb76a SF |
1332 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1333 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1334 | name_len++; /* trailing null */ |
1335 | name_len *= 2; | |
340625e6 | 1336 | } else { |
a9d02ad4 | 1337 | count = 0; /* no pad */ |
340625e6 | 1338 | name_len = copy_path_name(pSMB->fileName, fileName); |
a9d02ad4 SF |
1339 | } |
1340 | if (*pOplock & REQ_OPLOCK) | |
1341 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1342 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1343 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1344 | |
a9d02ad4 | 1345 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1346 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1347 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1348 | /* set file as system file if special file such | |
1349 | as fifo and server expecting SFU style and | |
1350 | no Unix extensions */ | |
1351 | ||
790fe579 SF |
1352 | if (create_options & CREATE_OPTION_SPECIAL) |
1353 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1354 | else /* BB FIXME BB */ |
1355 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1356 | |
67750fb9 JL |
1357 | if (create_options & CREATE_OPTION_READONLY) |
1358 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1359 | |
1360 | /* BB FIXME BB */ | |
50c2f753 SF |
1361 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1362 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1363 | /* BB FIXME END BB */ |
3e87d803 SF |
1364 | |
1365 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1366 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1367 | count += name_len; |
be8e3b00 | 1368 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1369 | |
1370 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1371 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1372 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1373 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1374 | if (rc) { |
f96637be | 1375 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1376 | } else { |
1377 | /* BB verify if wct == 15 */ | |
1378 | ||
582d21e5 | 1379 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1380 | |
1381 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1382 | /* Let caller know file was created so we can set the mode. */ | |
1383 | /* Do we care about the CreateAction in any other cases? */ | |
1384 | /* BB FIXME BB */ | |
790fe579 | 1385 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1386 | *pOplock |= CIFS_CREATE_ACTION; */ |
1387 | /* BB FIXME END */ | |
1388 | ||
790fe579 | 1389 | if (pfile_info) { |
a9d02ad4 SF |
1390 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1391 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1392 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1393 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1394 | pfile_info->Attributes = |
50c2f753 | 1395 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1396 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1397 | pfile_info->AllocationSize = |
1398 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1399 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1400 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1401 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1402 | } |
1403 | } | |
1404 | ||
1405 | cifs_buf_release(pSMB); | |
1406 | if (rc == -EAGAIN) | |
1407 | goto OldOpenRetry; | |
1408 | return rc; | |
1409 | } | |
1410 | ||
1da177e4 | 1411 | int |
d81b8a40 PS |
1412 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1413 | FILE_ALL_INFO *buf) | |
1da177e4 | 1414 | { |
1afdea4f | 1415 | int rc; |
9bf4fa01 PS |
1416 | OPEN_REQ *req = NULL; |
1417 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1418 | int bytes_returned; |
1419 | int name_len; | |
1420 | __u16 count; | |
d81b8a40 PS |
1421 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1422 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1423 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1424 | const struct nls_table *nls = cifs_sb->local_nls; |
1425 | int create_options = oparms->create_options; | |
1426 | int desired_access = oparms->desired_access; | |
1427 | int disposition = oparms->disposition; | |
1428 | const char *path = oparms->path; | |
1da177e4 LT |
1429 | |
1430 | openRetry: | |
9bf4fa01 PS |
1431 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1432 | (void **)&rsp); | |
1da177e4 LT |
1433 | if (rc) |
1434 | return rc; | |
1435 | ||
9bf4fa01 PS |
1436 | /* no commands go after this */ |
1437 | req->AndXCommand = 0xFF; | |
1da177e4 | 1438 | |
9bf4fa01 PS |
1439 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1440 | /* account for one byte pad to word boundary */ | |
1441 | count = 1; | |
1442 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1443 | path, PATH_MAX, nls, remap); | |
1444 | /* trailing null */ | |
1445 | name_len++; | |
1da177e4 | 1446 | name_len *= 2; |
9bf4fa01 PS |
1447 | req->NameLength = cpu_to_le16(name_len); |
1448 | } else { | |
1449 | /* BB improve check for buffer overruns BB */ | |
1450 | /* no pad */ | |
1451 | count = 0; | |
340625e6 | 1452 | name_len = copy_path_name(req->fileName, path); |
9bf4fa01 | 1453 | req->NameLength = cpu_to_le16(name_len); |
1da177e4 | 1454 | } |
9bf4fa01 PS |
1455 | |
1456 | if (*oplock & REQ_OPLOCK) | |
1457 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1458 | else if (*oplock & REQ_BATCHOPLOCK) | |
1459 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1460 | ||
1461 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1462 | req->AllocationSize = 0; | |
1463 | ||
1464 | /* | |
1465 | * Set file as system file if special file such as fifo and server | |
1466 | * expecting SFU style and no Unix extensions. | |
1467 | */ | |
790fe579 | 1468 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1469 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1470 | else |
9bf4fa01 | 1471 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1472 | |
9bf4fa01 PS |
1473 | /* |
1474 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1475 | * sensitive checks for other servers such as Samba. | |
1476 | */ | |
1da177e4 | 1477 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1478 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1479 | |
67750fb9 | 1480 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1481 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1482 | ||
1483 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1484 | req->CreateDisposition = cpu_to_le32(disposition); | |
1485 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1486 | |
09d1db5c | 1487 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1488 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1489 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1490 | |
1491 | count += name_len; | |
9bf4fa01 | 1492 | inc_rfc1001_len(req, count); |
1da177e4 | 1493 | |
9bf4fa01 PS |
1494 | req->ByteCount = cpu_to_le16(count); |
1495 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1496 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1497 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1498 | if (rc) { |
f96637be | 1499 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1500 | cifs_buf_release(req); |
1501 | if (rc == -EAGAIN) | |
1502 | goto openRetry; | |
1503 | return rc; | |
1da177e4 | 1504 | } |
a5a2b489 | 1505 | |
9bf4fa01 PS |
1506 | /* 1 byte no need to le_to_cpu */ |
1507 | *oplock = rsp->OplockLevel; | |
1508 | /* cifs fid stays in le */ | |
d81b8a40 | 1509 | oparms->fid->netfid = rsp->Fid; |
86f740f2 | 1510 | oparms->fid->access = desired_access; |
9bf4fa01 PS |
1511 | |
1512 | /* Let caller know file was created so we can set the mode. */ | |
1513 | /* Do we care about the CreateAction in any other cases? */ | |
1514 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1515 | *oplock |= CIFS_CREATE_ACTION; | |
1516 | ||
1517 | if (buf) { | |
1518 | /* copy from CreationTime to Attributes */ | |
1519 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1520 | /* the file_info buf is endian converted by caller */ | |
1521 | buf->AllocationSize = rsp->AllocationSize; | |
1522 | buf->EndOfFile = rsp->EndOfFile; | |
1523 | buf->NumberOfLinks = cpu_to_le32(1); | |
1524 | buf->DeletePending = 0; | |
1525 | } | |
1526 | ||
1527 | cifs_buf_release(req); | |
1da177e4 LT |
1528 | return rc; |
1529 | } | |
1530 | ||
e28bc5b1 JL |
1531 | /* |
1532 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1533 | * current bigbuf. | |
1534 | */ | |
c42a6abe | 1535 | int |
350be257 | 1536 | cifs_discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1537 | { |
05432e29 RS |
1538 | unsigned int rfclen = server->pdu_size; |
1539 | int remaining = rfclen + server->vals->header_preamble_size - | |
1540 | server->total_read; | |
e28bc5b1 JL |
1541 | |
1542 | while (remaining > 0) { | |
1543 | int length; | |
1544 | ||
1545 | length = cifs_read_from_socket(server, server->bigbuf, | |
1546 | min_t(unsigned int, remaining, | |
1887f601 | 1547 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1548 | if (length < 0) |
1549 | return length; | |
1550 | server->total_read += length; | |
1551 | remaining -= length; | |
1552 | } | |
1553 | ||
e28bc5b1 JL |
1554 | return 0; |
1555 | } | |
1556 | ||
6cc3b242 | 1557 | static int |
8004c78c PS |
1558 | __cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid, |
1559 | bool malformed) | |
6cc3b242 PS |
1560 | { |
1561 | int length; | |
6cc3b242 | 1562 | |
350be257 | 1563 | length = cifs_discard_remaining_data(server); |
8004c78c | 1564 | dequeue_mid(mid, malformed); |
350be257 PS |
1565 | mid->resp_buf = server->smallbuf; |
1566 | server->smallbuf = NULL; | |
6cc3b242 PS |
1567 | return length; |
1568 | } | |
1569 | ||
8004c78c PS |
1570 | static int |
1571 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1572 | { | |
1573 | struct cifs_readdata *rdata = mid->callback_data; | |
1574 | ||
1575 | return __cifs_readv_discard(server, mid, rdata->result); | |
1576 | } | |
1577 | ||
09a4707e | 1578 | int |
e28bc5b1 JL |
1579 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1580 | { | |
1581 | int length, len; | |
8d5ce4d2 | 1582 | unsigned int data_offset, data_len; |
e28bc5b1 | 1583 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf | 1584 | char *buf = server->smallbuf; |
2e96467d | 1585 | unsigned int buflen = server->pdu_size + |
93012bf9 | 1586 | server->vals->header_preamble_size; |
74dcf418 | 1587 | bool use_rdma_mr = false; |
e28bc5b1 | 1588 | |
f96637be JP |
1589 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1590 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1591 | |
1592 | /* | |
1593 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1594 | * can if there's not enough data. At this point, we've read down to | |
1595 | * the Mid. | |
1596 | */ | |
eb378711 | 1597 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1598 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1599 | |
a6137305 AV |
1600 | length = cifs_read_from_socket(server, |
1601 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1602 | if (length < 0) |
1603 | return length; | |
1604 | server->total_read += length; | |
1605 | ||
511c54a2 PS |
1606 | if (server->ops->is_session_expired && |
1607 | server->ops->is_session_expired(buf)) { | |
1608 | cifs_reconnect(server); | |
511c54a2 PS |
1609 | return -1; |
1610 | } | |
1611 | ||
6cc3b242 | 1612 | if (server->ops->is_status_pending && |
66265f13 | 1613 | server->ops->is_status_pending(buf, server)) { |
350be257 | 1614 | cifs_discard_remaining_data(server); |
6cc3b242 PS |
1615 | return -1; |
1616 | } | |
1617 | ||
8004c78c PS |
1618 | /* set up first two iov for signature check and to get credits */ |
1619 | rdata->iov[0].iov_base = buf; | |
bb1bccb6 PS |
1620 | rdata->iov[0].iov_len = server->vals->header_preamble_size; |
1621 | rdata->iov[1].iov_base = buf + server->vals->header_preamble_size; | |
1622 | rdata->iov[1].iov_len = | |
1623 | server->total_read - server->vals->header_preamble_size; | |
8004c78c PS |
1624 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1625 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
1626 | cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n", | |
1627 | rdata->iov[1].iov_base, rdata->iov[1].iov_len); | |
1628 | ||
e28bc5b1 | 1629 | /* Was the SMB read successful? */ |
eb378711 | 1630 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1631 | if (rdata->result != 0) { |
f96637be JP |
1632 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1633 | __func__, rdata->result); | |
8004c78c PS |
1634 | /* normal error on read response */ |
1635 | return __cifs_readv_discard(server, mid, false); | |
e28bc5b1 JL |
1636 | } |
1637 | ||
1638 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1639 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1640 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1641 | __func__, server->total_read, | |
1642 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1643 | rdata->result = -EIO; |
1644 | return cifs_readv_discard(server, mid); | |
1645 | } | |
1646 | ||
93012bf9 RS |
1647 | data_offset = server->ops->read_data_offset(buf) + |
1648 | server->vals->header_preamble_size; | |
e28bc5b1 JL |
1649 | if (data_offset < server->total_read) { |
1650 | /* | |
1651 | * win2k8 sometimes sends an offset of 0 when the read | |
1652 | * is beyond the EOF. Treat it as if the data starts just after | |
1653 | * the header. | |
1654 | */ | |
f96637be JP |
1655 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1656 | __func__, data_offset); | |
e28bc5b1 JL |
1657 | data_offset = server->total_read; |
1658 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1659 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1660 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1661 | __func__, data_offset); | |
e28bc5b1 JL |
1662 | rdata->result = -EIO; |
1663 | return cifs_readv_discard(server, mid); | |
1664 | } | |
1665 | ||
f96637be JP |
1666 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1667 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1668 | |
1669 | len = data_offset - server->total_read; | |
1670 | if (len > 0) { | |
1671 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1672 | length = cifs_read_from_socket(server, |
1673 | buf + server->total_read, len); | |
e28bc5b1 JL |
1674 | if (length < 0) |
1675 | return length; | |
1676 | server->total_read += length; | |
1677 | } | |
1678 | ||
e28bc5b1 | 1679 | /* how much data is in the response? */ |
74dcf418 LL |
1680 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1681 | use_rdma_mr = rdata->mr; | |
1682 | #endif | |
1683 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
1684 | if (!use_rdma_mr && (data_offset + data_len > buflen)) { | |
e28bc5b1 JL |
1685 | /* data_len is corrupt -- discard frame */ |
1686 | rdata->result = -EIO; | |
1687 | return cifs_readv_discard(server, mid); | |
1688 | } | |
1689 | ||
8321fec4 JL |
1690 | length = rdata->read_into_pages(server, rdata, data_len); |
1691 | if (length < 0) | |
1692 | return length; | |
e28bc5b1 | 1693 | |
8321fec4 | 1694 | server->total_read += length; |
e28bc5b1 | 1695 | |
f96637be JP |
1696 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1697 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1698 | |
1699 | /* discard anything left over */ | |
5ffef7bf | 1700 | if (server->total_read < buflen) |
e28bc5b1 JL |
1701 | return cifs_readv_discard(server, mid); |
1702 | ||
1703 | dequeue_mid(mid, false); | |
350be257 PS |
1704 | mid->resp_buf = server->smallbuf; |
1705 | server->smallbuf = NULL; | |
e28bc5b1 JL |
1706 | return length; |
1707 | } | |
1708 | ||
e28bc5b1 JL |
1709 | static void |
1710 | cifs_readv_callback(struct mid_q_entry *mid) | |
1711 | { | |
1712 | struct cifs_readdata *rdata = mid->callback_data; | |
1713 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1714 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1715 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1716 | .rq_nvec = 2, | |
8321fec4 | 1717 | .rq_pages = rdata->pages, |
6d3adb23 | 1718 | .rq_offset = rdata->page_offset, |
8321fec4 JL |
1719 | .rq_npages = rdata->nr_pages, |
1720 | .rq_pagesz = rdata->pagesz, | |
1721 | .rq_tailsz = rdata->tailsz }; | |
34f4deb7 | 1722 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
e28bc5b1 | 1723 | |
f96637be JP |
1724 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1725 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1726 | rdata->bytes); | |
e28bc5b1 | 1727 | |
7c9421e1 | 1728 | switch (mid->mid_state) { |
e28bc5b1 JL |
1729 | case MID_RESPONSE_RECEIVED: |
1730 | /* result already set, check signature */ | |
38d77c50 | 1731 | if (server->sign) { |
985e4ff0 SF |
1732 | int rc = 0; |
1733 | ||
bf5ea0e2 | 1734 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1735 | mid->sequence_number); |
985e4ff0 | 1736 | if (rc) |
f96637be JP |
1737 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1738 | rc); | |
e28bc5b1 JL |
1739 | } |
1740 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1741 | task_io_account_read(rdata->got_bytes); |
1742 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1743 | break; |
1744 | case MID_REQUEST_SUBMITTED: | |
1745 | case MID_RETRY_NEEDED: | |
1746 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1747 | if (server->sign && rdata->got_bytes) |
1748 | /* reset bytes number since we can not check a sign */ | |
1749 | rdata->got_bytes = 0; | |
1750 | /* FIXME: should this be counted toward the initiating task? */ | |
1751 | task_io_account_read(rdata->got_bytes); | |
1752 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1753 | break; |
1754 | default: | |
1755 | rdata->result = -EIO; | |
1756 | } | |
1757 | ||
da472fc8 | 1758 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1759 | DeleteMidQEntry(mid); |
34f4deb7 | 1760 | add_credits(server, &credits, 0); |
e28bc5b1 JL |
1761 | } |
1762 | ||
1763 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1764 | int | |
1765 | cifs_async_readv(struct cifs_readdata *rdata) | |
1766 | { | |
1767 | int rc; | |
1768 | READ_REQ *smb = NULL; | |
1769 | int wct; | |
1770 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1771 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1772 | .rq_nvec = 2 }; | |
e28bc5b1 | 1773 | |
f96637be JP |
1774 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1775 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1776 | |
1777 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1778 | wct = 12; | |
1779 | else { | |
1780 | wct = 10; /* old style read */ | |
1781 | if ((rdata->offset >> 32) > 0) { | |
1782 | /* can not handle this big offset for old */ | |
1783 | return -EIO; | |
1784 | } | |
1785 | } | |
1786 | ||
1787 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1788 | if (rc) | |
1789 | return rc; | |
1790 | ||
1791 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1792 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1793 | ||
1794 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1795 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1796 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1797 | if (wct == 12) | |
1798 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1799 | smb->Remaining = 0; | |
1800 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1801 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1802 | if (wct == 12) | |
1803 | smb->ByteCount = 0; | |
1804 | else { | |
1805 | /* old style read */ | |
1806 | struct smb_com_readx_req *smbr = | |
1807 | (struct smb_com_readx_req *)smb; | |
1808 | smbr->ByteCount = 0; | |
1809 | } | |
1810 | ||
1811 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1812 | rdata->iov[0].iov_base = smb; |
1813 | rdata->iov[0].iov_len = 4; | |
1814 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1815 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1816 | |
6993f74a | 1817 | kref_get(&rdata->refcount); |
fec344e3 | 1818 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
3349c3a7 | 1819 | cifs_readv_callback, NULL, rdata, 0, NULL); |
e28bc5b1 JL |
1820 | |
1821 | if (rc == 0) | |
44c58186 | 1822 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1823 | else |
1824 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1825 | |
1826 | cifs_small_buf_release(smb); | |
1827 | return rc; | |
1828 | } | |
1829 | ||
1da177e4 | 1830 | int |
6d5786a3 PS |
1831 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1832 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1833 | { |
1834 | int rc = -EACCES; | |
1835 | READ_REQ *pSMB = NULL; | |
1836 | READ_RSP *pSMBr = NULL; | |
1837 | char *pReadData = NULL; | |
bfa0d75a | 1838 | int wct; |
ec637e3f SF |
1839 | int resp_buf_type = 0; |
1840 | struct kvec iov[1]; | |
da502f7d | 1841 | struct kvec rsp_iov; |
d4ffff1f PS |
1842 | __u32 pid = io_parms->pid; |
1843 | __u16 netfid = io_parms->netfid; | |
1844 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1845 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1846 | unsigned int count = io_parms->length; |
1da177e4 | 1847 | |
f96637be | 1848 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1849 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1850 | wct = 12; |
4c3130ef | 1851 | else { |
bfa0d75a | 1852 | wct = 10; /* old style read */ |
d4ffff1f | 1853 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1854 | /* can not handle this big offset for old */ |
1855 | return -EIO; | |
1856 | } | |
1857 | } | |
1da177e4 LT |
1858 | |
1859 | *nbytes = 0; | |
ec637e3f | 1860 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1861 | if (rc) |
1862 | return rc; | |
1863 | ||
d4ffff1f PS |
1864 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1865 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1866 | ||
1da177e4 LT |
1867 | /* tcon and ses pointer are checked in smb_init */ |
1868 | if (tcon->ses->server == NULL) | |
1869 | return -ECONNABORTED; | |
1870 | ||
ec637e3f | 1871 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1872 | pSMB->Fid = netfid; |
d4ffff1f | 1873 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1874 | if (wct == 12) |
d4ffff1f | 1875 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1876 | |
1da177e4 LT |
1877 | pSMB->Remaining = 0; |
1878 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1879 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1880 | if (wct == 12) |
bfa0d75a SF |
1881 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1882 | else { | |
1883 | /* old style read */ | |
50c2f753 | 1884 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1885 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1886 | pSMBW->ByteCount = 0; |
bfa0d75a | 1887 | } |
ec637e3f SF |
1888 | |
1889 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1890 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1891 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1892 | CIFS_LOG_ERROR, &rsp_iov); | |
1893 | cifs_small_buf_release(pSMB); | |
44c58186 | 1894 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1895 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1896 | if (rc) { |
f96637be | 1897 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1898 | } else { |
1899 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1900 | data_length = data_length << 16; | |
1901 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1902 | *nbytes = data_length; | |
1903 | ||
1904 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1905 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1906 | || (data_length > count)) { |
f96637be | 1907 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1908 | data_length, count); |
1da177e4 LT |
1909 | rc = -EIO; |
1910 | *nbytes = 0; | |
1911 | } else { | |
ec637e3f | 1912 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1913 | le16_to_cpu(pSMBr->DataOffset); |
1914 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1915 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1916 | rc = -EFAULT; |
26f57364 | 1917 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1918 | if (*buf) |
50c2f753 | 1919 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1920 | } |
1921 | } | |
1da177e4 | 1922 | |
790fe579 | 1923 | if (*buf) { |
da502f7d | 1924 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1925 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1926 | /* return buffer to caller to free */ |
da502f7d | 1927 | *buf = rsp_iov.iov_base; |
790fe579 | 1928 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1929 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1930 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1931 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1932 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1933 | |
1934 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1935 | since file handle passed in no longer valid */ |
1936 | return rc; | |
1937 | } | |
1938 | ||
ec637e3f | 1939 | |
1da177e4 | 1940 | int |
6d5786a3 | 1941 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1942 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1943 | { |
1944 | int rc = -EACCES; | |
1945 | WRITE_REQ *pSMB = NULL; | |
1946 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1947 | int bytes_returned, wct; |
1da177e4 LT |
1948 | __u32 bytes_sent; |
1949 | __u16 byte_count; | |
fa2989f4 PS |
1950 | __u32 pid = io_parms->pid; |
1951 | __u16 netfid = io_parms->netfid; | |
1952 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1953 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1954 | unsigned int count = io_parms->length; |
1da177e4 | 1955 | |
a24e2d7d SF |
1956 | *nbytes = 0; |
1957 | ||
f96637be | 1958 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1959 | if (tcon->ses == NULL) |
1c955187 SF |
1960 | return -ECONNABORTED; |
1961 | ||
790fe579 | 1962 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1963 | wct = 14; |
4c3130ef | 1964 | else { |
1c955187 | 1965 | wct = 12; |
4c3130ef SF |
1966 | if ((offset >> 32) > 0) { |
1967 | /* can not handle big offset for old srv */ | |
1968 | return -EIO; | |
1969 | } | |
1970 | } | |
1c955187 SF |
1971 | |
1972 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1973 | (void **) &pSMBr); |
1974 | if (rc) | |
1975 | return rc; | |
fa2989f4 PS |
1976 | |
1977 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1978 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1979 | ||
1da177e4 LT |
1980 | /* tcon and ses pointer are checked in smb_init */ |
1981 | if (tcon->ses->server == NULL) | |
1982 | return -ECONNABORTED; | |
1983 | ||
1984 | pSMB->AndXCommand = 0xFF; /* none */ | |
1985 | pSMB->Fid = netfid; | |
1986 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1987 | if (wct == 14) |
1c955187 | 1988 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1989 | |
1da177e4 LT |
1990 | pSMB->Reserved = 0xFFFFFFFF; |
1991 | pSMB->WriteMode = 0; | |
1992 | pSMB->Remaining = 0; | |
1993 | ||
50c2f753 | 1994 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1995 | can send more if LARGE_WRITE_X capability returned by the server and if |
1996 | our buffer is big enough or if we convert to iovecs on socket writes | |
1997 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1998 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1999 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
2000 | } else { | |
2001 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
2002 | & ~0xFF; | |
2003 | } | |
2004 | ||
2005 | if (bytes_sent > count) | |
2006 | bytes_sent = count; | |
2007 | pSMB->DataOffset = | |
50c2f753 | 2008 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 2009 | if (buf) |
61e74801 | 2010 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 2011 | else if (count != 0) { |
1da177e4 LT |
2012 | /* No buffer */ |
2013 | cifs_buf_release(pSMB); | |
2014 | return -EINVAL; | |
e30dcf3a | 2015 | } /* else setting file size with write of zero bytes */ |
790fe579 | 2016 | if (wct == 14) |
e30dcf3a | 2017 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 2018 | else /* wct == 12 */ |
e30dcf3a | 2019 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 2020 | |
1da177e4 LT |
2021 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
2022 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 2023 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 2024 | |
790fe579 | 2025 | if (wct == 14) |
1c955187 | 2026 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
2027 | else { /* old style write has byte count 4 bytes earlier |
2028 | so 4 bytes pad */ | |
2029 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
2030 | (struct smb_com_writex_req *)pSMB; |
2031 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
2032 | } | |
1da177e4 LT |
2033 | |
2034 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 2035 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2036 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2037 | if (rc) { |
f96637be | 2038 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
2039 | } else { |
2040 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
2041 | *nbytes = (*nbytes) << 16; | |
2042 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2043 | |
2044 | /* | |
2045 | * Mask off high 16 bits when bytes written as returned by the | |
2046 | * server is greater than bytes requested by the client. Some | |
2047 | * OS/2 servers are known to set incorrect CountHigh values. | |
2048 | */ | |
2049 | if (*nbytes > count) | |
2050 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
2051 | } |
2052 | ||
2053 | cifs_buf_release(pSMB); | |
2054 | ||
50c2f753 | 2055 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2056 | since file handle passed in no longer valid */ |
2057 | ||
2058 | return rc; | |
2059 | } | |
2060 | ||
c28c89fc JL |
2061 | void |
2062 | cifs_writedata_release(struct kref *refcount) | |
2063 | { | |
2064 | struct cifs_writedata *wdata = container_of(refcount, | |
2065 | struct cifs_writedata, refcount); | |
db223a59 LL |
2066 | #ifdef CONFIG_CIFS_SMB_DIRECT |
2067 | if (wdata->mr) { | |
2068 | smbd_deregister_mr(wdata->mr); | |
2069 | wdata->mr = NULL; | |
2070 | } | |
2071 | #endif | |
c28c89fc JL |
2072 | |
2073 | if (wdata->cfile) | |
2074 | cifsFileInfo_put(wdata->cfile); | |
2075 | ||
8e7360f6 | 2076 | kvfree(wdata->pages); |
c28c89fc JL |
2077 | kfree(wdata); |
2078 | } | |
2079 | ||
2080 | /* | |
2081 | * Write failed with a retryable error. Resend the write request. It's also | |
2082 | * possible that the page was redirtied so re-clean the page. | |
2083 | */ | |
2084 | static void | |
2085 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
2086 | { | |
7f6c5008 | 2087 | int i, rc = 0; |
2b0143b5 | 2088 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 2089 | struct TCP_Server_Info *server; |
7f6c5008 | 2090 | unsigned int rest_len; |
c28c89fc | 2091 | |
7f6c5008 PS |
2092 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
2093 | i = 0; | |
2094 | rest_len = wdata->bytes; | |
c28c89fc | 2095 | do { |
7f6c5008 PS |
2096 | struct cifs_writedata *wdata2; |
2097 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
2098 | ||
2099 | wsize = server->ops->wp_retry_size(inode); | |
2100 | if (wsize < rest_len) { | |
09cbfeaf | 2101 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
2102 | if (!nr_pages) { |
2103 | rc = -ENOTSUPP; | |
2104 | break; | |
2105 | } | |
09cbfeaf KS |
2106 | cur_len = nr_pages * PAGE_SIZE; |
2107 | tailsz = PAGE_SIZE; | |
7f6c5008 | 2108 | } else { |
09cbfeaf | 2109 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 2110 | cur_len = rest_len; |
09cbfeaf | 2111 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 2112 | } |
c28c89fc | 2113 | |
7f6c5008 PS |
2114 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
2115 | if (!wdata2) { | |
2116 | rc = -ENOMEM; | |
2117 | break; | |
c51bb0ea | 2118 | } |
7f6c5008 PS |
2119 | |
2120 | for (j = 0; j < nr_pages; j++) { | |
2121 | wdata2->pages[j] = wdata->pages[i + j]; | |
2122 | lock_page(wdata2->pages[j]); | |
2123 | clear_page_dirty_for_io(wdata2->pages[j]); | |
2124 | } | |
2125 | ||
2126 | wdata2->sync_mode = wdata->sync_mode; | |
2127 | wdata2->nr_pages = nr_pages; | |
2128 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 2129 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
2130 | wdata2->tailsz = tailsz; |
2131 | wdata2->bytes = cur_len; | |
2132 | ||
86f740f2 | 2133 | rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY, |
fe768d51 | 2134 | &wdata2->cfile); |
7f6c5008 | 2135 | if (!wdata2->cfile) { |
fe768d51 PS |
2136 | cifs_dbg(VFS, "No writable handle to retry writepages rc=%d\n", |
2137 | rc); | |
2138 | if (!is_retryable_error(rc)) | |
2139 | rc = -EBADF; | |
165df9a0 PS |
2140 | } else { |
2141 | wdata2->pid = wdata2->cfile->pid; | |
2142 | rc = server->ops->async_writev(wdata2, | |
2143 | cifs_writedata_release); | |
7f6c5008 | 2144 | } |
7f6c5008 PS |
2145 | |
2146 | for (j = 0; j < nr_pages; j++) { | |
2147 | unlock_page(wdata2->pages[j]); | |
9a66396f | 2148 | if (rc != 0 && !is_retryable_error(rc)) { |
7f6c5008 PS |
2149 | SetPageError(wdata2->pages[j]); |
2150 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 2151 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
2152 | } |
2153 | } | |
2154 | ||
a4813799 | 2155 | kref_put(&wdata2->refcount, cifs_writedata_release); |
7f6c5008 | 2156 | if (rc) { |
9a66396f | 2157 | if (is_retryable_error(rc)) |
7f6c5008 | 2158 | continue; |
165df9a0 | 2159 | i += nr_pages; |
7f6c5008 PS |
2160 | break; |
2161 | } | |
2162 | ||
2163 | rest_len -= cur_len; | |
2164 | i += nr_pages; | |
2165 | } while (i < wdata->nr_pages); | |
c28c89fc | 2166 | |
165df9a0 PS |
2167 | /* cleanup remaining pages from the original wdata */ |
2168 | for (; i < wdata->nr_pages; i++) { | |
2169 | SetPageError(wdata->pages[i]); | |
2170 | end_page_writeback(wdata->pages[i]); | |
2171 | put_page(wdata->pages[i]); | |
2172 | } | |
2173 | ||
9a66396f PS |
2174 | if (rc != 0 && !is_retryable_error(rc)) |
2175 | mapping_set_error(inode->i_mapping, rc); | |
c28c89fc JL |
2176 | kref_put(&wdata->refcount, cifs_writedata_release); |
2177 | } | |
2178 | ||
c2e87640 | 2179 | void |
c28c89fc JL |
2180 | cifs_writev_complete(struct work_struct *work) |
2181 | { | |
2182 | struct cifs_writedata *wdata = container_of(work, | |
2183 | struct cifs_writedata, work); | |
2b0143b5 | 2184 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
2185 | int i = 0; |
2186 | ||
2187 | if (wdata->result == 0) { | |
597b027f | 2188 | spin_lock(&inode->i_lock); |
c28c89fc | 2189 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2190 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2191 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2192 | wdata->bytes); | |
2193 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2194 | return cifs_writev_requeue(wdata); | |
2195 | ||
2196 | for (i = 0; i < wdata->nr_pages; i++) { | |
2197 | struct page *page = wdata->pages[i]; | |
2198 | if (wdata->result == -EAGAIN) | |
2199 | __set_page_dirty_nobuffers(page); | |
2200 | else if (wdata->result < 0) | |
2201 | SetPageError(page); | |
2202 | end_page_writeback(page); | |
09cbfeaf | 2203 | put_page(page); |
c28c89fc JL |
2204 | } |
2205 | if (wdata->result != -EAGAIN) | |
2206 | mapping_set_error(inode->i_mapping, wdata->result); | |
2207 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2208 | } | |
2209 | ||
2210 | struct cifs_writedata * | |
c2e87640 | 2211 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
8e7360f6 LL |
2212 | { |
2213 | struct page **pages = | |
6396bb22 | 2214 | kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); |
8e7360f6 LL |
2215 | if (pages) |
2216 | return cifs_writedata_direct_alloc(pages, complete); | |
2217 | ||
2218 | return NULL; | |
2219 | } | |
2220 | ||
2221 | struct cifs_writedata * | |
2222 | cifs_writedata_direct_alloc(struct page **pages, work_func_t complete) | |
c28c89fc JL |
2223 | { |
2224 | struct cifs_writedata *wdata; | |
2225 | ||
8e7360f6 | 2226 | wdata = kzalloc(sizeof(*wdata), GFP_NOFS); |
c28c89fc | 2227 | if (wdata != NULL) { |
8e7360f6 | 2228 | wdata->pages = pages; |
c28c89fc | 2229 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2230 | INIT_LIST_HEAD(&wdata->list); |
2231 | init_completion(&wdata->done); | |
2232 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2233 | } |
2234 | return wdata; | |
2235 | } | |
2236 | ||
2237 | /* | |
7c9421e1 | 2238 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2239 | * workqueue completion task. |
2240 | */ | |
2241 | static void | |
2242 | cifs_writev_callback(struct mid_q_entry *mid) | |
2243 | { | |
2244 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2245 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2246 | unsigned int written; |
2247 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
34f4deb7 | 2248 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
c28c89fc | 2249 | |
7c9421e1 | 2250 | switch (mid->mid_state) { |
c28c89fc JL |
2251 | case MID_RESPONSE_RECEIVED: |
2252 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2253 | if (wdata->result != 0) | |
2254 | break; | |
2255 | ||
2256 | written = le16_to_cpu(smb->CountHigh); | |
2257 | written <<= 16; | |
2258 | written += le16_to_cpu(smb->Count); | |
2259 | /* | |
2260 | * Mask off high 16 bits when bytes written as returned | |
2261 | * by the server is greater than bytes requested by the | |
2262 | * client. OS/2 servers are known to set incorrect | |
2263 | * CountHigh values. | |
2264 | */ | |
2265 | if (written > wdata->bytes) | |
2266 | written &= 0xFFFF; | |
2267 | ||
2268 | if (written < wdata->bytes) | |
2269 | wdata->result = -ENOSPC; | |
2270 | else | |
2271 | wdata->bytes = written; | |
2272 | break; | |
2273 | case MID_REQUEST_SUBMITTED: | |
2274 | case MID_RETRY_NEEDED: | |
2275 | wdata->result = -EAGAIN; | |
2276 | break; | |
2277 | default: | |
2278 | wdata->result = -EIO; | |
2279 | break; | |
2280 | } | |
2281 | ||
da472fc8 | 2282 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2283 | DeleteMidQEntry(mid); |
34f4deb7 | 2284 | add_credits(tcon->ses->server, &credits, 0); |
c28c89fc JL |
2285 | } |
2286 | ||
2287 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2288 | int | |
4a5c80d7 SF |
2289 | cifs_async_writev(struct cifs_writedata *wdata, |
2290 | void (*release)(struct kref *kref)) | |
c28c89fc | 2291 | { |
eddb079d | 2292 | int rc = -EACCES; |
c28c89fc JL |
2293 | WRITE_REQ *smb = NULL; |
2294 | int wct; | |
96daf2b0 | 2295 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 2296 | struct kvec iov[2]; |
fec344e3 | 2297 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2298 | |
2299 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2300 | wct = 14; | |
2301 | } else { | |
2302 | wct = 12; | |
2303 | if (wdata->offset >> 32 > 0) { | |
2304 | /* can not handle big offset for old srv */ | |
2305 | return -EIO; | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2310 | if (rc) | |
2311 | goto async_writev_out; | |
2312 | ||
fe5f5d2e JL |
2313 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2314 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2315 | |
c28c89fc | 2316 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2317 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2318 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2319 | if (wct == 14) | |
2320 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2321 | smb->Reserved = 0xFFFFFFFF; | |
2322 | smb->WriteMode = 0; | |
2323 | smb->Remaining = 0; | |
2324 | ||
2325 | smb->DataOffset = | |
2326 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2327 | ||
2328 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
2329 | iov[0].iov_len = 4; |
2330 | iov[0].iov_base = smb; | |
2331 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
2332 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 2333 | |
738f9de5 PS |
2334 | rqst.rq_iov = iov; |
2335 | rqst.rq_nvec = 2; | |
eddb079d | 2336 | rqst.rq_pages = wdata->pages; |
6d3adb23 | 2337 | rqst.rq_offset = wdata->page_offset; |
eddb079d JL |
2338 | rqst.rq_npages = wdata->nr_pages; |
2339 | rqst.rq_pagesz = wdata->pagesz; | |
2340 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2341 | |
f96637be JP |
2342 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2343 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2344 | |
2345 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2346 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2347 | ||
2348 | if (wct == 14) { | |
2349 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2350 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2351 | } else { | |
2352 | /* wct == 12 */ | |
2353 | struct smb_com_writex_req *smbw = | |
2354 | (struct smb_com_writex_req *)smb; | |
2355 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2356 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 2357 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2358 | } |
2359 | ||
2360 | kref_get(&wdata->refcount); | |
fec344e3 | 2361 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
3349c3a7 | 2362 | cifs_writev_callback, NULL, wdata, 0, NULL); |
c28c89fc JL |
2363 | |
2364 | if (rc == 0) | |
44c58186 | 2365 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2366 | else |
4a5c80d7 | 2367 | kref_put(&wdata->refcount, release); |
c28c89fc | 2368 | |
c28c89fc JL |
2369 | async_writev_out: |
2370 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2371 | return rc; |
2372 | } | |
2373 | ||
d6e04ae6 | 2374 | int |
6d5786a3 | 2375 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2376 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2377 | { |
2378 | int rc = -EACCES; | |
2379 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2380 | int wct; |
d6e04ae6 | 2381 | int smb_hdr_len; |
ec637e3f | 2382 | int resp_buf_type = 0; |
fa2989f4 PS |
2383 | __u32 pid = io_parms->pid; |
2384 | __u16 netfid = io_parms->netfid; | |
2385 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2386 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2387 | unsigned int count = io_parms->length; |
da502f7d | 2388 | struct kvec rsp_iov; |
1da177e4 | 2389 | |
fbec9ab9 JL |
2390 | *nbytes = 0; |
2391 | ||
f96637be | 2392 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2393 | |
4c3130ef | 2394 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2395 | wct = 14; |
4c3130ef | 2396 | } else { |
8cc64c6e | 2397 | wct = 12; |
4c3130ef SF |
2398 | if ((offset >> 32) > 0) { |
2399 | /* can not handle big offset for old srv */ | |
2400 | return -EIO; | |
2401 | } | |
2402 | } | |
8cc64c6e | 2403 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2404 | if (rc) |
2405 | return rc; | |
fa2989f4 PS |
2406 | |
2407 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2408 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2409 | ||
1da177e4 LT |
2410 | /* tcon and ses pointer are checked in smb_init */ |
2411 | if (tcon->ses->server == NULL) | |
2412 | return -ECONNABORTED; | |
2413 | ||
d6e04ae6 | 2414 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2415 | pSMB->Fid = netfid; |
2416 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2417 | if (wct == 14) |
8cc64c6e | 2418 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2419 | pSMB->Reserved = 0xFFFFFFFF; |
2420 | pSMB->WriteMode = 0; | |
2421 | pSMB->Remaining = 0; | |
d6e04ae6 | 2422 | |
1da177e4 | 2423 | pSMB->DataOffset = |
50c2f753 | 2424 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2425 | |
3e84469d SF |
2426 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2427 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2428 | /* header + 1 byte pad */ |
2429 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2430 | if (wct == 14) |
be8e3b00 | 2431 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2432 | else /* wct == 12 */ |
be8e3b00 | 2433 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2434 | if (wct == 14) |
8cc64c6e SF |
2435 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2436 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2437 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2438 | (struct smb_com_writex_req *)pSMB; |
2439 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2440 | } | |
3e84469d | 2441 | iov[0].iov_base = pSMB; |
790fe579 | 2442 | if (wct == 14) |
ec637e3f SF |
2443 | iov[0].iov_len = smb_hdr_len + 4; |
2444 | else /* wct == 12 pad bigger by four bytes */ | |
2445 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2446 | |
da502f7d PS |
2447 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
2448 | &rsp_iov); | |
2449 | cifs_small_buf_release(pSMB); | |
44c58186 | 2450 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2451 | if (rc) { |
f96637be | 2452 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2453 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2454 | /* presumably this can not happen, but best to be safe */ |
2455 | rc = -EIO; | |
d6e04ae6 | 2456 | } else { |
da502f7d | 2457 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
2458 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2459 | *nbytes = (*nbytes) << 16; | |
2460 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2461 | |
2462 | /* | |
2463 | * Mask off high 16 bits when bytes written as returned by the | |
2464 | * server is greater than bytes requested by the client. OS/2 | |
2465 | * servers are known to set incorrect CountHigh values. | |
2466 | */ | |
2467 | if (*nbytes > count) | |
2468 | *nbytes &= 0xFFFF; | |
50c2f753 | 2469 | } |
1da177e4 | 2470 | |
da502f7d | 2471 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 2472 | |
50c2f753 | 2473 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2474 | since file handle passed in no longer valid */ |
2475 | ||
2476 | return rc; | |
2477 | } | |
d6e04ae6 | 2478 | |
6d5786a3 PS |
2479 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2480 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2481 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2482 | { | |
2483 | int rc = 0; | |
2484 | LOCK_REQ *pSMB = NULL; | |
2485 | struct kvec iov[2]; | |
da502f7d | 2486 | struct kvec rsp_iov; |
9ee305b7 PS |
2487 | int resp_buf_type; |
2488 | __u16 count; | |
2489 | ||
f96637be JP |
2490 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2491 | num_lock, num_unlock); | |
9ee305b7 PS |
2492 | |
2493 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2494 | if (rc) | |
2495 | return rc; | |
2496 | ||
2497 | pSMB->Timeout = 0; | |
2498 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2499 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2500 | pSMB->LockType = lock_type; | |
2501 | pSMB->AndXCommand = 0xFF; /* none */ | |
2502 | pSMB->Fid = netfid; /* netfid stays le */ | |
2503 | ||
2504 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2505 | inc_rfc1001_len(pSMB, count); | |
2506 | pSMB->ByteCount = cpu_to_le16(count); | |
2507 | ||
2508 | iov[0].iov_base = (char *)pSMB; | |
2509 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2510 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2511 | iov[1].iov_base = (char *)buf; | |
2512 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2513 | ||
44c58186 | 2514 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
392e1c5d RS |
2515 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, |
2516 | CIFS_NO_RSP_BUF, &rsp_iov); | |
da502f7d | 2517 | cifs_small_buf_release(pSMB); |
9ee305b7 | 2518 | if (rc) |
f96637be | 2519 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2520 | |
2521 | return rc; | |
2522 | } | |
d6e04ae6 | 2523 | |
1da177e4 | 2524 | int |
6d5786a3 | 2525 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2526 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2527 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2528 | const __u32 numLock, const __u8 lockType, |
2529 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2530 | { |
2531 | int rc = 0; | |
2532 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2533 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2534 | int bytes_returned; |
a891f0f8 | 2535 | int flags = 0; |
1da177e4 LT |
2536 | __u16 count; |
2537 | ||
f96637be JP |
2538 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2539 | (int)waitFlag, numLock); | |
46810cbf SF |
2540 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2541 | ||
1da177e4 LT |
2542 | if (rc) |
2543 | return rc; | |
2544 | ||
790fe579 | 2545 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 | 2546 | /* no response expected */ |
392e1c5d | 2547 | flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP; |
1da177e4 | 2548 | pSMB->Timeout = 0; |
4b18f2a9 | 2549 | } else if (waitFlag) { |
a891f0f8 | 2550 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2551 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2552 | } else { | |
2553 | pSMB->Timeout = 0; | |
2554 | } | |
2555 | ||
2556 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2557 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2558 | pSMB->LockType = lockType; | |
12fed00d | 2559 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2560 | pSMB->AndXCommand = 0xFF; /* none */ |
2561 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2562 | ||
790fe579 | 2563 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2564 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2565 | /* BB where to store pid high? */ |
2566 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2567 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2568 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2569 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2570 | count = sizeof(LOCKING_ANDX_RANGE); | |
2571 | } else { | |
2572 | /* oplock break */ | |
2573 | count = 0; | |
2574 | } | |
be8e3b00 | 2575 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2576 | pSMB->ByteCount = cpu_to_le16(count); |
2577 | ||
da502f7d | 2578 | if (waitFlag) |
7ee1af76 | 2579 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 2580 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 2581 | else |
a891f0f8 | 2582 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 2583 | cifs_small_buf_release(pSMB); |
44c58186 | 2584 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2585 | if (rc) |
f96637be | 2586 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2587 | |
50c2f753 | 2588 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2589 | since file handle passed in no longer valid */ |
2590 | return rc; | |
2591 | } | |
2592 | ||
08547b03 | 2593 | int |
6d5786a3 | 2594 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2595 | const __u16 smb_file_id, const __u32 netpid, |
2596 | const loff_t start_offset, const __u64 len, | |
2597 | struct file_lock *pLockData, const __u16 lock_type, | |
2598 | const bool waitFlag) | |
08547b03 SF |
2599 | { |
2600 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2601 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2602 | struct cifs_posix_lock *parm_data; |
2603 | int rc = 0; | |
3a5ff61c | 2604 | int timeout = 0; |
08547b03 | 2605 | int bytes_returned = 0; |
133672ef | 2606 | int resp_buf_type = 0; |
08547b03 | 2607 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2608 | struct kvec iov[1]; |
da502f7d | 2609 | struct kvec rsp_iov; |
08547b03 | 2610 | |
f96637be | 2611 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2612 | |
08547b03 SF |
2613 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2614 | ||
2615 | if (rc) | |
2616 | return rc; | |
2617 | ||
2618 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2619 | ||
50c2f753 | 2620 | params = 6; |
08547b03 SF |
2621 | pSMB->MaxSetupCount = 0; |
2622 | pSMB->Reserved = 0; | |
2623 | pSMB->Flags = 0; | |
08547b03 SF |
2624 | pSMB->Reserved2 = 0; |
2625 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2626 | offset = param_offset + params; | |
2627 | ||
08547b03 SF |
2628 | count = sizeof(struct cifs_posix_lock); |
2629 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2630 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2631 | pSMB->SetupCount = 1; |
2632 | pSMB->Reserved3 = 0; | |
c5fd363d | 2633 | if (pLockData) |
08547b03 SF |
2634 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2635 | else | |
2636 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2637 | byte_count = 3 /* pad */ + params + count; | |
2638 | pSMB->DataCount = cpu_to_le16(count); | |
2639 | pSMB->ParameterCount = cpu_to_le16(params); | |
2640 | pSMB->TotalDataCount = pSMB->DataCount; | |
2641 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2642 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2643 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2644 | (((char *) &pSMB->hdr.Protocol) + offset); |
2645 | ||
2646 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2647 | if (waitFlag) { |
133672ef | 2648 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2649 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2650 | pSMB->Timeout = cpu_to_le32(-1); |
2651 | } else | |
2652 | pSMB->Timeout = 0; | |
2653 | ||
4f6bcec9 | 2654 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2655 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2656 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2657 | |
2658 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2659 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2660 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2661 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2662 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2663 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2664 | if (waitFlag) { |
2665 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2666 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2667 | } else { | |
133672ef | 2668 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2669 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2670 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2671 | &resp_buf_type, timeout, &rsp_iov); |
2672 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2673 | } |
da502f7d | 2674 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2675 | |
08547b03 | 2676 | if (rc) { |
f96637be | 2677 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2678 | } else if (pLockData) { |
fc94cdb9 SF |
2679 | /* lock structure can be returned on get */ |
2680 | __u16 data_offset; | |
2681 | __u16 data_count; | |
2682 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2683 | ||
820a803f | 2684 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2685 | rc = -EIO; /* bad smb */ |
2686 | goto plk_err_exit; | |
2687 | } | |
fc94cdb9 SF |
2688 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2689 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2690 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2691 | rc = -EIO; |
2692 | goto plk_err_exit; | |
2693 | } | |
2694 | parm_data = (struct cifs_posix_lock *) | |
2695 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2696 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2697 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2698 | else { |
2699 | if (parm_data->lock_type == | |
bc09d141 | 2700 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2701 | pLockData->fl_type = F_RDLCK; |
2702 | else if (parm_data->lock_type == | |
bc09d141 | 2703 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2704 | pLockData->fl_type = F_WRLCK; |
2705 | ||
5443d130 SF |
2706 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2707 | pLockData->fl_end = pLockData->fl_start + | |
2708 | le64_to_cpu(parm_data->length) - 1; | |
9d5b86ac | 2709 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2710 | } |
08547b03 | 2711 | } |
50c2f753 | 2712 | |
fc94cdb9 | 2713 | plk_err_exit: |
da502f7d | 2714 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2715 | |
08547b03 SF |
2716 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2717 | since file handle passed in no longer valid */ | |
2718 | ||
2719 | return rc; | |
2720 | } | |
2721 | ||
2722 | ||
1da177e4 | 2723 | int |
6d5786a3 | 2724 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2725 | { |
2726 | int rc = 0; | |
2727 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2728 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2729 | |
2730 | /* do not retry on dead session on close */ | |
2731 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2732 | if (rc == -EAGAIN) |
1da177e4 LT |
2733 | return 0; |
2734 | if (rc) | |
2735 | return rc; | |
2736 | ||
1da177e4 | 2737 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2738 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2739 | pSMB->ByteCount = 0; |
792af7b0 | 2740 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2741 | cifs_small_buf_release(pSMB); |
44c58186 | 2742 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2743 | if (rc) { |
790fe579 | 2744 | if (rc != -EINTR) { |
1da177e4 | 2745 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2746 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2747 | } |
2748 | } | |
2749 | ||
1da177e4 | 2750 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2751 | if (rc == -EAGAIN) |
1da177e4 LT |
2752 | rc = 0; |
2753 | ||
2754 | return rc; | |
2755 | } | |
2756 | ||
b298f223 | 2757 | int |
6d5786a3 | 2758 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2759 | { |
2760 | int rc = 0; | |
2761 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2762 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2763 | |
2764 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2765 | if (rc) | |
2766 | return rc; | |
2767 | ||
2768 | pSMB->FileID = (__u16) smb_file_id; | |
2769 | pSMB->ByteCount = 0; | |
792af7b0 | 2770 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2771 | cifs_small_buf_release(pSMB); |
44c58186 | 2772 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2773 | if (rc) |
f96637be | 2774 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2775 | |
2776 | return rc; | |
2777 | } | |
2778 | ||
1da177e4 | 2779 | int |
6d5786a3 | 2780 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2781 | const char *from_name, const char *to_name, |
2782 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2783 | { |
2784 | int rc = 0; | |
2785 | RENAME_REQ *pSMB = NULL; | |
2786 | RENAME_RSP *pSMBr = NULL; | |
2787 | int bytes_returned; | |
2788 | int name_len, name_len2; | |
2789 | __u16 count; | |
2baa2682 | 2790 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2791 | |
f96637be | 2792 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2793 | renameRetry: |
2794 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2795 | (void **) &pSMBr); | |
2796 | if (rc) | |
2797 | return rc; | |
2798 | ||
2799 | pSMB->BufferFormat = 0x04; | |
2800 | pSMB->SearchAttributes = | |
2801 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2802 | ATTR_DIRECTORY); | |
2803 | ||
2804 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2805 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2806 | from_name, PATH_MAX, | |
2807 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2808 | name_len++; /* trailing null */ |
2809 | name_len *= 2; | |
2810 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2811 | /* protocol requires ASCII signature byte on Unicode string */ | |
2812 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2813 | name_len2 = | |
acbbb76a | 2814 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2815 | to_name, PATH_MAX, cifs_sb->local_nls, |
2816 | remap); | |
1da177e4 LT |
2817 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2818 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2819 | } else { |
2820 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
2821 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); | |
1da177e4 | 2822 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
1da177e4 LT |
2823 | name_len2++; /* signature byte */ |
2824 | } | |
2825 | ||
2826 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2827 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2828 | pSMB->ByteCount = cpu_to_le16(count); |
2829 | ||
2830 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2831 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2832 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2833 | if (rc) |
f96637be | 2834 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2835 | |
1da177e4 LT |
2836 | cifs_buf_release(pSMB); |
2837 | ||
2838 | if (rc == -EAGAIN) | |
2839 | goto renameRetry; | |
2840 | ||
2841 | return rc; | |
2842 | } | |
2843 | ||
6d5786a3 | 2844 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2845 | int netfid, const char *target_name, |
50c2f753 | 2846 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2847 | { |
2848 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2849 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2850 | struct set_file_rename *rename_info; |
1da177e4 LT |
2851 | char *data_offset; |
2852 | char dummy_string[30]; | |
2853 | int rc = 0; | |
2854 | int bytes_returned = 0; | |
2855 | int len_of_str; | |
2856 | __u16 params, param_offset, offset, count, byte_count; | |
2857 | ||
f96637be | 2858 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2859 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2860 | (void **) &pSMBr); | |
2861 | if (rc) | |
2862 | return rc; | |
2863 | ||
2864 | params = 6; | |
2865 | pSMB->MaxSetupCount = 0; | |
2866 | pSMB->Reserved = 0; | |
2867 | pSMB->Flags = 0; | |
2868 | pSMB->Timeout = 0; | |
2869 | pSMB->Reserved2 = 0; | |
2870 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2871 | offset = param_offset + params; | |
2872 | ||
2873 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2874 | rename_info = (struct set_file_rename *) data_offset; | |
2875 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2876 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2877 | pSMB->SetupCount = 1; |
2878 | pSMB->Reserved3 = 0; | |
2879 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2880 | byte_count = 3 /* pad */ + params; | |
2881 | pSMB->ParameterCount = cpu_to_le16(params); | |
2882 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2883 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2884 | pSMB->DataOffset = cpu_to_le16(offset); | |
2885 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2886 | rename_info->overwrite = cpu_to_le32(1); | |
2887 | rename_info->root_fid = 0; | |
2888 | /* unicode only call */ | |
790fe579 | 2889 | if (target_name == NULL) { |
50c2f753 | 2890 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2891 | len_of_str = |
2892 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2893 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2894 | } else { |
acbbb76a SF |
2895 | len_of_str = |
2896 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2897 | target_name, PATH_MAX, nls_codepage, |
2898 | remap); | |
1da177e4 LT |
2899 | } |
2900 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2901 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2902 | byte_count += count; |
2903 | pSMB->DataCount = cpu_to_le16(count); | |
2904 | pSMB->TotalDataCount = pSMB->DataCount; | |
2905 | pSMB->Fid = netfid; | |
2906 | pSMB->InformationLevel = | |
2907 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2908 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2909 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2910 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2911 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2912 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2913 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2914 | if (rc) |
f96637be JP |
2915 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2916 | rc); | |
a5a2b489 | 2917 | |
1da177e4 LT |
2918 | cifs_buf_release(pSMB); |
2919 | ||
2920 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2921 | since file handle passed in no longer valid */ | |
2922 | ||
2923 | return rc; | |
2924 | } | |
2925 | ||
2926 | int | |
6d5786a3 PS |
2927 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2928 | const char *fromName, const __u16 target_tid, const char *toName, | |
2929 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2930 | { |
2931 | int rc = 0; | |
2932 | COPY_REQ *pSMB = NULL; | |
2933 | COPY_RSP *pSMBr = NULL; | |
2934 | int bytes_returned; | |
2935 | int name_len, name_len2; | |
2936 | __u16 count; | |
2937 | ||
f96637be | 2938 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2939 | copyRetry: |
2940 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2941 | (void **) &pSMBr); | |
2942 | if (rc) | |
2943 | return rc; | |
2944 | ||
2945 | pSMB->BufferFormat = 0x04; | |
2946 | pSMB->Tid2 = target_tid; | |
2947 | ||
2948 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2949 | ||
2950 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2951 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2952 | fromName, PATH_MAX, nls_codepage, | |
2953 | remap); | |
1da177e4 LT |
2954 | name_len++; /* trailing null */ |
2955 | name_len *= 2; | |
2956 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2957 | /* protocol requires ASCII signature byte on Unicode string */ | |
2958 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2959 | name_len2 = |
acbbb76a SF |
2960 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2961 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2962 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2963 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2964 | } else { |
2965 | name_len = copy_path_name(pSMB->OldFileName, fromName); | |
1da177e4 | 2966 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2967 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName); |
1da177e4 LT |
2968 | name_len2++; /* signature byte */ |
2969 | } | |
2970 | ||
2971 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2972 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2973 | pSMB->ByteCount = cpu_to_le16(count); |
2974 | ||
2975 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2976 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2977 | if (rc) { | |
f96637be JP |
2978 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2979 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2980 | } |
0d817bc0 | 2981 | cifs_buf_release(pSMB); |
1da177e4 LT |
2982 | |
2983 | if (rc == -EAGAIN) | |
2984 | goto copyRetry; | |
2985 | ||
2986 | return rc; | |
2987 | } | |
2988 | ||
2989 | int | |
6d5786a3 | 2990 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2991 | const char *fromName, const char *toName, |
bc8ebdc4 | 2992 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2993 | { |
2994 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2995 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2996 | char *data_offset; | |
2997 | int name_len; | |
2998 | int name_len_target; | |
2999 | int rc = 0; | |
3000 | int bytes_returned = 0; | |
3001 | __u16 params, param_offset, offset, byte_count; | |
3002 | ||
f96637be | 3003 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
3004 | createSymLinkRetry: |
3005 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3006 | (void **) &pSMBr); | |
3007 | if (rc) | |
3008 | return rc; | |
3009 | ||
3010 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3011 | name_len = | |
bc8ebdc4 NA |
3012 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
3013 | /* find define for this maxpathcomponent */ | |
3014 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3015 | name_len++; /* trailing null */ |
3016 | name_len *= 2; | |
3017 | ||
340625e6 RS |
3018 | } else { |
3019 | name_len = copy_path_name(pSMB->FileName, fromName); | |
1da177e4 LT |
3020 | } |
3021 | params = 6 + name_len; | |
3022 | pSMB->MaxSetupCount = 0; | |
3023 | pSMB->Reserved = 0; | |
3024 | pSMB->Flags = 0; | |
3025 | pSMB->Timeout = 0; | |
3026 | pSMB->Reserved2 = 0; | |
3027 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3028 | InformationLevel) - 4; |
1da177e4 LT |
3029 | offset = param_offset + params; |
3030 | ||
3031 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
3032 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3033 | name_len_target = | |
bc8ebdc4 NA |
3034 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
3035 | /* find define for this maxpathcomponent */ | |
3036 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3037 | name_len_target++; /* trailing null */ |
3038 | name_len_target *= 2; | |
340625e6 RS |
3039 | } else { |
3040 | name_len_target = copy_path_name(data_offset, toName); | |
1da177e4 LT |
3041 | } |
3042 | ||
3043 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3044 | /* BB find exact max on data count below from sess */ | |
3045 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3046 | pSMB->SetupCount = 1; | |
3047 | pSMB->Reserved3 = 0; | |
3048 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3049 | byte_count = 3 /* pad */ + params + name_len_target; | |
3050 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
3051 | pSMB->ParameterCount = cpu_to_le16(params); | |
3052 | pSMB->TotalDataCount = pSMB->DataCount; | |
3053 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3054 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3055 | pSMB->DataOffset = cpu_to_le16(offset); | |
3056 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
3057 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3058 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3059 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3060 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3061 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3062 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 3063 | if (rc) |
f96637be JP |
3064 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
3065 | rc); | |
1da177e4 | 3066 | |
0d817bc0 | 3067 | cifs_buf_release(pSMB); |
1da177e4 LT |
3068 | |
3069 | if (rc == -EAGAIN) | |
3070 | goto createSymLinkRetry; | |
3071 | ||
3072 | return rc; | |
3073 | } | |
3074 | ||
3075 | int | |
6d5786a3 | 3076 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3077 | const char *fromName, const char *toName, |
737b758c | 3078 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3079 | { |
3080 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
3081 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
3082 | char *data_offset; | |
3083 | int name_len; | |
3084 | int name_len_target; | |
3085 | int rc = 0; | |
3086 | int bytes_returned = 0; | |
3087 | __u16 params, param_offset, offset, byte_count; | |
3088 | ||
f96637be | 3089 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
3090 | createHardLinkRetry: |
3091 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3092 | (void **) &pSMBr); | |
3093 | if (rc) | |
3094 | return rc; | |
3095 | ||
3096 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
3097 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
3098 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3099 | name_len++; /* trailing null */ |
3100 | name_len *= 2; | |
3101 | ||
340625e6 RS |
3102 | } else { |
3103 | name_len = copy_path_name(pSMB->FileName, toName); | |
1da177e4 LT |
3104 | } |
3105 | params = 6 + name_len; | |
3106 | pSMB->MaxSetupCount = 0; | |
3107 | pSMB->Reserved = 0; | |
3108 | pSMB->Flags = 0; | |
3109 | pSMB->Timeout = 0; | |
3110 | pSMB->Reserved2 = 0; | |
3111 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3112 | InformationLevel) - 4; |
1da177e4 LT |
3113 | offset = param_offset + params; |
3114 | ||
3115 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
3116 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3117 | name_len_target = | |
acbbb76a SF |
3118 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
3119 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3120 | name_len_target++; /* trailing null */ |
3121 | name_len_target *= 2; | |
340625e6 RS |
3122 | } else { |
3123 | name_len_target = copy_path_name(data_offset, fromName); | |
1da177e4 LT |
3124 | } |
3125 | ||
3126 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3127 | /* BB find exact max on data count below from sess*/ | |
3128 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3129 | pSMB->SetupCount = 1; | |
3130 | pSMB->Reserved3 = 0; | |
3131 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3132 | byte_count = 3 /* pad */ + params + name_len_target; | |
3133 | pSMB->ParameterCount = cpu_to_le16(params); | |
3134 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3135 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
3136 | pSMB->TotalDataCount = pSMB->DataCount; | |
3137 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3138 | pSMB->DataOffset = cpu_to_le16(offset); | |
3139 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
3140 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3141 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3142 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3143 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3144 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3145 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3146 | if (rc) |
f96637be JP |
3147 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
3148 | rc); | |
1da177e4 LT |
3149 | |
3150 | cifs_buf_release(pSMB); | |
3151 | if (rc == -EAGAIN) | |
3152 | goto createHardLinkRetry; | |
3153 | ||
3154 | return rc; | |
3155 | } | |
3156 | ||
3157 | int | |
6d5786a3 | 3158 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
3159 | const char *from_name, const char *to_name, |
3160 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
3161 | { |
3162 | int rc = 0; | |
3163 | NT_RENAME_REQ *pSMB = NULL; | |
3164 | RENAME_RSP *pSMBr = NULL; | |
3165 | int bytes_returned; | |
3166 | int name_len, name_len2; | |
3167 | __u16 count; | |
2baa2682 | 3168 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 3169 | |
f96637be | 3170 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
3171 | winCreateHardLinkRetry: |
3172 | ||
3173 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3174 | (void **) &pSMBr); | |
3175 | if (rc) | |
3176 | return rc; | |
3177 | ||
3178 | pSMB->SearchAttributes = | |
3179 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3180 | ATTR_DIRECTORY); | |
3181 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3182 | pSMB->ClusterCount = 0; | |
3183 | ||
3184 | pSMB->BufferFormat = 0x04; | |
3185 | ||
3186 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3187 | name_len = | |
d6e906f1 SF |
3188 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3189 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3190 | name_len++; /* trailing null */ |
3191 | name_len *= 2; | |
fcc7c09d JL |
3192 | |
3193 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3194 | pSMB->OldFileName[name_len] = 0x04; | |
3195 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3196 | name_len2 = |
acbbb76a | 3197 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3198 | to_name, PATH_MAX, cifs_sb->local_nls, |
3199 | remap); | |
1da177e4 LT |
3200 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3201 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
3202 | } else { |
3203 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
1da177e4 | 3204 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 3205 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
1da177e4 LT |
3206 | name_len2++; /* signature byte */ |
3207 | } | |
3208 | ||
3209 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3210 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3211 | pSMB->ByteCount = cpu_to_le16(count); |
3212 | ||
3213 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3214 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3215 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3216 | if (rc) |
f96637be | 3217 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3218 | |
1da177e4 LT |
3219 | cifs_buf_release(pSMB); |
3220 | if (rc == -EAGAIN) | |
3221 | goto winCreateHardLinkRetry; | |
3222 | ||
3223 | return rc; | |
3224 | } | |
3225 | ||
3226 | int | |
6d5786a3 | 3227 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3228 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3229 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3230 | { |
3231 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3232 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3233 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3234 | int rc = 0; | |
3235 | int bytes_returned; | |
3236 | int name_len; | |
3237 | __u16 params, byte_count; | |
460b9696 | 3238 | char *data_start; |
1da177e4 | 3239 | |
f96637be | 3240 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3241 | |
3242 | querySymLinkRetry: | |
3243 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3244 | (void **) &pSMBr); | |
3245 | if (rc) | |
3246 | return rc; | |
3247 | ||
3248 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3249 | name_len = | |
bc8ebdc4 NA |
3250 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3251 | searchName, PATH_MAX, nls_codepage, | |
3252 | remap); | |
1da177e4 LT |
3253 | name_len++; /* trailing null */ |
3254 | name_len *= 2; | |
340625e6 RS |
3255 | } else { |
3256 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3257 | } |
3258 | ||
3259 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3260 | pSMB->TotalDataCount = 0; | |
3261 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3262 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3263 | pSMB->MaxSetupCount = 0; |
3264 | pSMB->Reserved = 0; | |
3265 | pSMB->Flags = 0; | |
3266 | pSMB->Timeout = 0; | |
3267 | pSMB->Reserved2 = 0; | |
3268 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3269 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3270 | pSMB->DataCount = 0; |
3271 | pSMB->DataOffset = 0; | |
3272 | pSMB->SetupCount = 1; | |
3273 | pSMB->Reserved3 = 0; | |
3274 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3275 | byte_count = params + 1 /* pad */ ; | |
3276 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3277 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3278 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3279 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3280 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3281 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3282 | ||
3283 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3284 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3285 | if (rc) { | |
f96637be | 3286 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3287 | } else { |
3288 | /* decode response */ | |
3289 | ||
3290 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3291 | /* BB also check enough total bytes returned */ |
820a803f | 3292 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3293 | rc = -EIO; |
1da177e4 | 3294 | else { |
0e0d2cf3 | 3295 | bool is_unicode; |
460b9696 JL |
3296 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3297 | ||
3298 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3299 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3300 | |
0e0d2cf3 SF |
3301 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3302 | is_unicode = true; | |
3303 | else | |
3304 | is_unicode = false; | |
3305 | ||
737b758c | 3306 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3307 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3308 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3309 | if (!*symlinkinfo) |
460b9696 | 3310 | rc = -ENOMEM; |
1da177e4 LT |
3311 | } |
3312 | } | |
3313 | cifs_buf_release(pSMB); | |
3314 | if (rc == -EAGAIN) | |
3315 | goto querySymLinkRetry; | |
3316 | return rc; | |
3317 | } | |
3318 | ||
c52a9554 SF |
3319 | /* |
3320 | * Recent Windows versions now create symlinks more frequently | |
3321 | * and they use the "reparse point" mechanism below. We can of course | |
3322 | * do symlinks nicely to Samba and other servers which support the | |
3323 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3324 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3325 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3326 | * In the interim this code has been moved to its own config option so | |
3327 | * it is not compiled in by default until callers fixed up and more tested. | |
3328 | */ | |
1da177e4 | 3329 | int |
d244bf2d PS |
3330 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3331 | __u16 fid, char **symlinkinfo, | |
3332 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3333 | { |
3334 | int rc = 0; | |
3335 | int bytes_returned; | |
50c2f753 SF |
3336 | struct smb_com_transaction_ioctl_req *pSMB; |
3337 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3338 | bool is_unicode; |
3339 | unsigned int sub_len; | |
3340 | char *sub_start; | |
c31f3307 SF |
3341 | struct reparse_symlink_data *reparse_buf; |
3342 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3343 | __u32 data_offset, data_count; |
3344 | char *end_of_smb; | |
3345 | ||
3346 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3347 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3348 | (void **) &pSMBr); | |
3349 | if (rc) | |
3350 | return rc; | |
3351 | ||
3352 | pSMB->TotalParameterCount = 0 ; | |
3353 | pSMB->TotalDataCount = 0; | |
3354 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3355 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3356 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3357 | pSMB->MaxSetupCount = 4; |
3358 | pSMB->Reserved = 0; | |
3359 | pSMB->ParameterOffset = 0; | |
3360 | pSMB->DataCount = 0; | |
3361 | pSMB->DataOffset = 0; | |
3362 | pSMB->SetupCount = 4; | |
3363 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3364 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3365 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3366 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3367 | pSMB->IsRootFlag = 0; | |
3368 | pSMB->Fid = fid; /* file handle always le */ | |
3369 | pSMB->ByteCount = 0; | |
3370 | ||
3371 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3372 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3373 | if (rc) { | |
f96637be | 3374 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3375 | goto qreparse_out; |
3376 | } | |
3377 | ||
3378 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3379 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3380 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3381 | /* BB also check enough total bytes returned */ | |
3382 | rc = -EIO; /* bad smb */ | |
3383 | goto qreparse_out; | |
3384 | } | |
3385 | if (!data_count || (data_count > 2048)) { | |
3386 | rc = -EIO; | |
3387 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3388 | goto qreparse_out; | |
3389 | } | |
3390 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3391 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3392 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3393 | if ((char *)reparse_buf >= end_of_smb) { | |
3394 | rc = -EIO; | |
3395 | goto qreparse_out; | |
1da177e4 | 3396 | } |
c31f3307 SF |
3397 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3398 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3399 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3400 | ||
3401 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3402 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3403 | le64_to_cpu(posix_buf->InodeType)); | |
3404 | rc = -EOPNOTSUPP; | |
3405 | goto qreparse_out; | |
3406 | } | |
3407 | is_unicode = true; | |
3408 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3409 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3410 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3411 | rc = -EIO; | |
3412 | goto qreparse_out; | |
3413 | } | |
3414 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3415 | sub_len, is_unicode, nls_codepage); | |
3416 | goto qreparse_out; | |
3417 | } else if (reparse_buf->ReparseTag != | |
3418 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3419 | rc = -EOPNOTSUPP; | |
3420 | goto qreparse_out; | |
3421 | } | |
3422 | ||
3423 | /* Reparse tag is NTFS symlink */ | |
3424 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3425 | reparse_buf->PathBuffer; | |
3426 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3427 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3428 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3429 | rc = -EIO; | |
3430 | goto qreparse_out; | |
3431 | } | |
d244bf2d PS |
3432 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3433 | is_unicode = true; | |
3434 | else | |
3435 | is_unicode = false; | |
989c7e51 | 3436 | |
d244bf2d PS |
3437 | /* BB FIXME investigate remapping reserved chars here */ |
3438 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3439 | nls_codepage); | |
3440 | if (!*symlinkinfo) | |
3441 | rc = -ENOMEM; | |
1da177e4 | 3442 | qreparse_out: |
4a6d87f1 | 3443 | cifs_buf_release(pSMB); |
1da177e4 | 3444 | |
d244bf2d PS |
3445 | /* |
3446 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3447 | * since file handle passed in no longer valid. | |
3448 | */ | |
1da177e4 LT |
3449 | return rc; |
3450 | } | |
3451 | ||
c7f508a9 SF |
3452 | int |
3453 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3454 | __u16 fid) | |
3455 | { | |
3456 | int rc = 0; | |
3457 | int bytes_returned; | |
3458 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3459 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3460 | ||
3461 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3462 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3463 | (void **) &pSMBr); | |
3464 | if (rc) | |
3465 | return rc; | |
3466 | ||
3467 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3468 | ||
3469 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3470 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3471 | pSMB->MaxParameterCount = 0; |
3472 | pSMB->MaxDataCount = 0; | |
3473 | pSMB->MaxSetupCount = 4; | |
3474 | pSMB->Reserved = 0; | |
3475 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3476 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3477 | pSMB->DataOffset = |
3478 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3479 | compression_state) - 4); /* 84 */ | |
3480 | pSMB->SetupCount = 4; | |
bc09d141 | 3481 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3482 | pSMB->ParameterCount = 0; |
bc09d141 | 3483 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3484 | pSMB->IsFsctl = 1; /* FSCTL */ |
3485 | pSMB->IsRootFlag = 0; | |
3486 | pSMB->Fid = fid; /* file handle always le */ | |
3487 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3488 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3489 | inc_rfc1001_len(pSMB, 5); |
3490 | ||
3491 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3492 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3493 | if (rc) | |
3494 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3495 | ||
3496 | cifs_buf_release(pSMB); | |
3497 | ||
3498 | /* | |
3499 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3500 | * since file handle passed in no longer valid. | |
3501 | */ | |
3502 | return rc; | |
3503 | } | |
3504 | ||
3505 | ||
1da177e4 LT |
3506 | #ifdef CONFIG_CIFS_POSIX |
3507 | ||
3508 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3509 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3510 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3511 | { |
3512 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3513 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3514 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3515 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3516 | /* |
3517 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3518 | ace->e_perm, ace->e_tag, ace->e_id); | |
3519 | */ | |
1da177e4 LT |
3520 | |
3521 | return; | |
3522 | } | |
3523 | ||
3524 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3525 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3526 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3527 | { |
3528 | int size = 0; | |
3529 | int i; | |
3530 | __u16 count; | |
50c2f753 SF |
3531 | struct cifs_posix_ace *pACE; |
3532 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3533 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3534 | |
3535 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3536 | return -EOPNOTSUPP; | |
3537 | ||
45987e00 | 3538 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3539 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3540 | pACE = &cifs_acl->ace_array[0]; | |
3541 | size = sizeof(struct cifs_posix_acl); | |
3542 | size += sizeof(struct cifs_posix_ace) * count; | |
3543 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3544 | if (size_of_data_area < size) { |
f96637be JP |
3545 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3546 | size_of_data_area, size); | |
1da177e4 LT |
3547 | return -EINVAL; |
3548 | } | |
45987e00 | 3549 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3550 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3551 | size = sizeof(struct cifs_posix_acl); | |
3552 | size += sizeof(struct cifs_posix_ace) * count; | |
3553 | /* skip past access ACEs to get to default ACEs */ | |
3554 | pACE = &cifs_acl->ace_array[count]; | |
3555 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3556 | size += sizeof(struct cifs_posix_ace) * count; | |
3557 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3558 | if (size_of_data_area < size) |
1da177e4 LT |
3559 | return -EINVAL; |
3560 | } else { | |
3561 | /* illegal type */ | |
3562 | return -EINVAL; | |
3563 | } | |
3564 | ||
3565 | size = posix_acl_xattr_size(count); | |
790fe579 | 3566 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3567 | /* used to query ACL EA size */ |
790fe579 | 3568 | } else if (size > buflen) { |
1da177e4 LT |
3569 | return -ERANGE; |
3570 | } else /* buffer big enough */ { | |
2211d5ba AG |
3571 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3572 | ||
ff7feac9 | 3573 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3574 | for (i = 0; i < count ; i++) { |
2211d5ba | 3575 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3576 | pACE++; |
1da177e4 LT |
3577 | } |
3578 | } | |
3579 | return size; | |
3580 | } | |
3581 | ||
0aa3a24b | 3582 | static void convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3583 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 | 3584 | { |
ff7feac9 SF |
3585 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3586 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3587 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3588 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3589 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3590 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3591 | } else |
ff7feac9 | 3592 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3593 | /* |
3594 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3595 | ace->e_perm, ace->e_tag, ace->e_id); | |
3596 | */ | |
1da177e4 LT |
3597 | } |
3598 | ||
3599 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3600 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3601 | const int buflen, const int acl_type) | |
1da177e4 LT |
3602 | { |
3603 | __u16 rc = 0; | |
50c2f753 | 3604 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3605 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3606 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3607 | int count; |
3608 | int i; | |
3609 | ||
790fe579 | 3610 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3611 | return 0; |
3612 | ||
3613 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3614 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3615 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3616 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3617 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3618 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3619 | return 0; |
3620 | } | |
3621 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3622 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3623 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3624 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3625 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3626 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3627 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3628 | } else { |
f96637be | 3629 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3630 | return 0; |
3631 | } | |
0aa3a24b HK |
3632 | for (i = 0; i < count; i++) |
3633 | convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); | |
790fe579 | 3634 | if (rc == 0) { |
1da177e4 LT |
3635 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3636 | rc += sizeof(struct cifs_posix_acl); | |
3637 | /* BB add check to make sure ACL does not overflow SMB */ | |
3638 | } | |
3639 | return rc; | |
3640 | } | |
3641 | ||
3642 | int | |
6d5786a3 | 3643 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3644 | const unsigned char *searchName, |
3645 | char *acl_inf, const int buflen, const int acl_type, | |
3646 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3647 | { |
3648 | /* SMB_QUERY_POSIX_ACL */ | |
3649 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3650 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3651 | int rc = 0; | |
3652 | int bytes_returned; | |
3653 | int name_len; | |
3654 | __u16 params, byte_count; | |
50c2f753 | 3655 | |
f96637be | 3656 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3657 | |
3658 | queryAclRetry: | |
3659 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3660 | (void **) &pSMBr); | |
3661 | if (rc) | |
3662 | return rc; | |
50c2f753 | 3663 | |
1da177e4 LT |
3664 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3665 | name_len = | |
acbbb76a SF |
3666 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3667 | searchName, PATH_MAX, nls_codepage, | |
3668 | remap); | |
1da177e4 LT |
3669 | name_len++; /* trailing null */ |
3670 | name_len *= 2; | |
3671 | pSMB->FileName[name_len] = 0; | |
3672 | pSMB->FileName[name_len+1] = 0; | |
340625e6 RS |
3673 | } else { |
3674 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3675 | } |
3676 | ||
3677 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3678 | pSMB->TotalDataCount = 0; | |
3679 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3680 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3681 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3682 | pSMB->MaxSetupCount = 0; | |
3683 | pSMB->Reserved = 0; | |
3684 | pSMB->Flags = 0; | |
3685 | pSMB->Timeout = 0; | |
3686 | pSMB->Reserved2 = 0; | |
3687 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3688 | offsetof(struct smb_com_transaction2_qpi_req, |
3689 | InformationLevel) - 4); | |
1da177e4 LT |
3690 | pSMB->DataCount = 0; |
3691 | pSMB->DataOffset = 0; | |
3692 | pSMB->SetupCount = 1; | |
3693 | pSMB->Reserved3 = 0; | |
3694 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3695 | byte_count = params + 1 /* pad */ ; | |
3696 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3697 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3698 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3699 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3700 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3701 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3702 | ||
3703 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3704 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3705 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3706 | if (rc) { |
f96637be | 3707 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3708 | } else { |
3709 | /* decode response */ | |
50c2f753 | 3710 | |
1da177e4 | 3711 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3712 | /* BB also check enough total bytes returned */ |
820a803f | 3713 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3714 | rc = -EIO; /* bad smb */ |
3715 | else { | |
3716 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3717 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3718 | rc = cifs_copy_posix_acl(acl_inf, | |
3719 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3720 | buflen, acl_type, count); |
1da177e4 LT |
3721 | } |
3722 | } | |
3723 | cifs_buf_release(pSMB); | |
3724 | if (rc == -EAGAIN) | |
3725 | goto queryAclRetry; | |
3726 | return rc; | |
3727 | } | |
3728 | ||
3729 | int | |
6d5786a3 | 3730 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3731 | const unsigned char *fileName, |
3732 | const char *local_acl, const int buflen, | |
3733 | const int acl_type, | |
3734 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3735 | { |
3736 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3737 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3738 | char *parm_data; | |
3739 | int name_len; | |
3740 | int rc = 0; | |
3741 | int bytes_returned = 0; | |
3742 | __u16 params, byte_count, data_count, param_offset, offset; | |
3743 | ||
f96637be | 3744 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3745 | setAclRetry: |
3746 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3747 | (void **) &pSMBr); |
1da177e4 LT |
3748 | if (rc) |
3749 | return rc; | |
3750 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3751 | name_len = | |
acbbb76a SF |
3752 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3753 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3754 | name_len++; /* trailing null */ |
3755 | name_len *= 2; | |
340625e6 RS |
3756 | } else { |
3757 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
3758 | } |
3759 | params = 6 + name_len; | |
3760 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3761 | /* BB find max SMB size from sess */ |
3762 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3763 | pSMB->MaxSetupCount = 0; |
3764 | pSMB->Reserved = 0; | |
3765 | pSMB->Flags = 0; | |
3766 | pSMB->Timeout = 0; | |
3767 | pSMB->Reserved2 = 0; | |
3768 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3769 | InformationLevel) - 4; |
1da177e4 LT |
3770 | offset = param_offset + params; |
3771 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3772 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3773 | ||
3774 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3775 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3776 | |
790fe579 | 3777 | if (data_count == 0) { |
1da177e4 LT |
3778 | rc = -EOPNOTSUPP; |
3779 | goto setACLerrorExit; | |
3780 | } | |
3781 | pSMB->DataOffset = cpu_to_le16(offset); | |
3782 | pSMB->SetupCount = 1; | |
3783 | pSMB->Reserved3 = 0; | |
3784 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3785 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3786 | byte_count = 3 /* pad */ + params + data_count; | |
3787 | pSMB->DataCount = cpu_to_le16(data_count); | |
3788 | pSMB->TotalDataCount = pSMB->DataCount; | |
3789 | pSMB->ParameterCount = cpu_to_le16(params); | |
3790 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3791 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3792 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3793 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3794 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3795 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3796 | if (rc) |
f96637be | 3797 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3798 | |
3799 | setACLerrorExit: | |
3800 | cifs_buf_release(pSMB); | |
3801 | if (rc == -EAGAIN) | |
3802 | goto setAclRetry; | |
3803 | return rc; | |
3804 | } | |
3805 | ||
f654bac2 SF |
3806 | /* BB fix tabs in this function FIXME BB */ |
3807 | int | |
6d5786a3 | 3808 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3809 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3810 | { |
50c2f753 SF |
3811 | int rc = 0; |
3812 | struct smb_t2_qfi_req *pSMB = NULL; | |
3813 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3814 | int bytes_returned; | |
3815 | __u16 params, byte_count; | |
f654bac2 | 3816 | |
f96637be | 3817 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3818 | if (tcon == NULL) |
3819 | return -ENODEV; | |
f654bac2 SF |
3820 | |
3821 | GetExtAttrRetry: | |
790fe579 SF |
3822 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3823 | (void **) &pSMBr); | |
3824 | if (rc) | |
3825 | return rc; | |
f654bac2 | 3826 | |
ad7a2926 | 3827 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3828 | pSMB->t2.TotalDataCount = 0; |
3829 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3830 | /* BB find exact max data count below from sess structure BB */ | |
3831 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3832 | pSMB->t2.MaxSetupCount = 0; | |
3833 | pSMB->t2.Reserved = 0; | |
3834 | pSMB->t2.Flags = 0; | |
3835 | pSMB->t2.Timeout = 0; | |
3836 | pSMB->t2.Reserved2 = 0; | |
3837 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3838 | Fid) - 4); | |
3839 | pSMB->t2.DataCount = 0; | |
3840 | pSMB->t2.DataOffset = 0; | |
3841 | pSMB->t2.SetupCount = 1; | |
3842 | pSMB->t2.Reserved3 = 0; | |
3843 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3844 | byte_count = params + 1 /* pad */ ; | |
3845 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3846 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3847 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3848 | pSMB->Pad = 0; | |
f654bac2 | 3849 | pSMB->Fid = netfid; |
be8e3b00 | 3850 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3851 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3852 | ||
3853 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3854 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3855 | if (rc) { | |
f96637be | 3856 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3857 | } else { |
3858 | /* decode response */ | |
3859 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3860 | /* BB also check enough total bytes returned */ |
820a803f | 3861 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3862 | /* If rc should we check for EOPNOSUPP and |
3863 | disable the srvino flag? or in caller? */ | |
3864 | rc = -EIO; /* bad smb */ | |
3865 | else { | |
3866 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3867 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3868 | struct file_chattr_info *pfinfo; | |
3869 | /* BB Do we need a cast or hash here ? */ | |
3870 | if (count != 16) { | |
f96637be | 3871 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3872 | rc = -EIO; |
3873 | goto GetExtAttrOut; | |
3874 | } | |
3875 | pfinfo = (struct file_chattr_info *) | |
3876 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3877 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3878 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3879 | } |
3880 | } | |
f654bac2 | 3881 | GetExtAttrOut: |
790fe579 SF |
3882 | cifs_buf_release(pSMB); |
3883 | if (rc == -EAGAIN) | |
3884 | goto GetExtAttrRetry; | |
3885 | return rc; | |
f654bac2 SF |
3886 | } |
3887 | ||
f654bac2 | 3888 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3889 | |
79df1bae JL |
3890 | /* |
3891 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3892 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3893 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3894 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3895 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3896 | * by caller | |
3897 | */ | |
3898 | static int | |
3899 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3900 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3901 | void **ret_buf) |
3902 | { | |
3903 | int rc; | |
3904 | __u32 temp_offset; | |
3905 | struct smb_com_ntransact_req *pSMB; | |
3906 | ||
3907 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3908 | (void **)&pSMB); | |
3909 | if (rc) | |
3910 | return rc; | |
3911 | *ret_buf = (void *)pSMB; | |
3912 | pSMB->Reserved = 0; | |
3913 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3914 | pSMB->TotalDataCount = 0; | |
c974befa | 3915 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3916 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3917 | pSMB->DataCount = pSMB->TotalDataCount; | |
3918 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3919 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3920 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3921 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3922 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3923 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3924 | return 0; | |
3925 | } | |
3926 | ||
3927 | static int | |
3928 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3929 | __u32 *pparmlen, __u32 *pdatalen) | |
3930 | { | |
3931 | char *end_of_smb; | |
3932 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3933 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3934 | u16 bcc; |
79df1bae JL |
3935 | |
3936 | *pdatalen = 0; | |
3937 | *pparmlen = 0; | |
3938 | ||
3939 | if (buf == NULL) | |
3940 | return -EINVAL; | |
3941 | ||
3942 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3943 | ||
820a803f JL |
3944 | bcc = get_bcc(&pSMBr->hdr); |
3945 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3946 | (char *)&pSMBr->ByteCount; |
3947 | ||
3948 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3949 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3950 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3951 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3952 | ||
3953 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3954 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3955 | ||
3956 | /* should we also check that parm and data areas do not overlap? */ | |
3957 | if (*ppparm > end_of_smb) { | |
f96637be | 3958 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3959 | return -EINVAL; |
3960 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3961 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3962 | return -EINVAL; |
3963 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3964 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3965 | return -EINVAL; |
3966 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3967 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3968 | *ppdata, data_count, (data_count + *ppdata), | |
3969 | end_of_smb, pSMBr); | |
79df1bae | 3970 | return -EINVAL; |
820a803f | 3971 | } else if (parm_count + data_count > bcc) { |
f96637be | 3972 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3973 | return -EINVAL; |
3974 | } | |
3975 | *pdatalen = data_count; | |
3976 | *pparmlen = parm_count; | |
3977 | return 0; | |
3978 | } | |
3979 | ||
0a4b92c0 SF |
3980 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3981 | int | |
6d5786a3 | 3982 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3983 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3984 | { |
3985 | int rc = 0; | |
3986 | int buf_type = 0; | |
ad7a2926 | 3987 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3988 | struct kvec iov[1]; |
da502f7d | 3989 | struct kvec rsp_iov; |
0a4b92c0 | 3990 | |
f96637be | 3991 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3992 | |
630f3f0c SF |
3993 | *pbuflen = 0; |
3994 | *acl_inf = NULL; | |
3995 | ||
b9c7a2bb | 3996 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3997 | 8 /* parm len */, tcon, (void **) &pSMB); |
3998 | if (rc) | |
3999 | return rc; | |
4000 | ||
4001 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
4002 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
4003 | pSMB->MaxSetupCount = 0; | |
4004 | pSMB->Fid = fid; /* file handle always le */ | |
4005 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
4006 | CIFS_ACL_DACL); | |
4007 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 4008 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 4009 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 4010 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 4011 | |
a761ac57 | 4012 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
4013 | 0, &rsp_iov); |
4014 | cifs_small_buf_release(pSMB); | |
44c58186 | 4015 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 4016 | if (rc) { |
f96637be | 4017 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 4018 | } else { /* decode response */ |
ad7a2926 | 4019 | __le32 *parm; |
630f3f0c SF |
4020 | __u32 parm_len; |
4021 | __u32 acl_len; | |
50c2f753 | 4022 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 4023 | char *pdata; |
0a4b92c0 SF |
4024 | |
4025 | /* validate_nttransact */ | |
da502f7d | 4026 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 4027 | &pdata, &parm_len, pbuflen); |
790fe579 | 4028 | if (rc) |
0a4b92c0 | 4029 | goto qsec_out; |
da502f7d | 4030 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 4031 | |
f96637be JP |
4032 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
4033 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
4034 | |
4035 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
4036 | rc = -EIO; /* bad smb */ | |
630f3f0c | 4037 | *pbuflen = 0; |
0a4b92c0 SF |
4038 | goto qsec_out; |
4039 | } | |
4040 | ||
4041 | /* BB check that data area is minimum length and as big as acl_len */ | |
4042 | ||
af6f4612 | 4043 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 4044 | if (acl_len != *pbuflen) { |
f96637be JP |
4045 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
4046 | acl_len, *pbuflen); | |
630f3f0c SF |
4047 | if (*pbuflen > acl_len) |
4048 | *pbuflen = acl_len; | |
4049 | } | |
0a4b92c0 | 4050 | |
630f3f0c SF |
4051 | /* check if buffer is big enough for the acl |
4052 | header followed by the smallest SID */ | |
4053 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
4054 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 4055 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
4056 | rc = -EINVAL; |
4057 | *pbuflen = 0; | |
4058 | } else { | |
f7f7c185 | 4059 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
4060 | if (*acl_inf == NULL) { |
4061 | *pbuflen = 0; | |
4062 | rc = -ENOMEM; | |
4063 | } | |
630f3f0c | 4064 | } |
0a4b92c0 SF |
4065 | } |
4066 | qsec_out: | |
da502f7d | 4067 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
4068 | return rc; |
4069 | } | |
97837582 SF |
4070 | |
4071 | int | |
6d5786a3 | 4072 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 4073 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
4074 | { |
4075 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
4076 | int rc = 0; | |
4077 | int bytes_returned = 0; | |
4078 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 4079 | void *pSMBr; |
97837582 SF |
4080 | |
4081 | setCifsAclRetry: | |
b2a3ad9c | 4082 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 4083 | if (rc) |
b2a3ad9c | 4084 | return rc; |
97837582 SF |
4085 | |
4086 | pSMB->MaxSetupCount = 0; | |
4087 | pSMB->Reserved = 0; | |
4088 | ||
4089 | param_count = 8; | |
4090 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
4091 | data_count = acllen; | |
4092 | data_offset = param_offset + param_count; | |
4093 | byte_count = 3 /* pad */ + param_count; | |
4094 | ||
4095 | pSMB->DataCount = cpu_to_le32(data_count); | |
4096 | pSMB->TotalDataCount = pSMB->DataCount; | |
4097 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
4098 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
4099 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
4100 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
4101 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4102 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
4103 | pSMB->SetupCount = 0; | |
4104 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
4105 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
4106 | ||
4107 | pSMB->Fid = fid; /* file handle always le */ | |
4108 | pSMB->Reserved2 = 0; | |
a5ff3769 | 4109 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
4110 | |
4111 | if (pntsd && acllen) { | |
b2a3ad9c JL |
4112 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
4113 | data_offset, pntsd, acllen); | |
be8e3b00 | 4114 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 4115 | } else |
be8e3b00 | 4116 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
4117 | |
4118 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4119 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4120 | ||
f96637be JP |
4121 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
4122 | bytes_returned, rc); | |
97837582 | 4123 | if (rc) |
f96637be | 4124 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
4125 | cifs_buf_release(pSMB); |
4126 | ||
4127 | if (rc == -EAGAIN) | |
4128 | goto setCifsAclRetry; | |
4129 | ||
4130 | return (rc); | |
4131 | } | |
4132 | ||
0a4b92c0 | 4133 | |
6b8edfe0 SF |
4134 | /* Legacy Query Path Information call for lookup to old servers such |
4135 | as Win9x/WinME */ | |
68889f26 PS |
4136 | int |
4137 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
4138 | const char *search_name, FILE_ALL_INFO *data, | |
4139 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 4140 | { |
ad7a2926 SF |
4141 | QUERY_INFORMATION_REQ *pSMB; |
4142 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
4143 | int rc = 0; |
4144 | int bytes_returned; | |
4145 | int name_len; | |
4146 | ||
f96637be | 4147 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
4148 | QInfRetry: |
4149 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 4150 | (void **) &pSMBr); |
6b8edfe0 SF |
4151 | if (rc) |
4152 | return rc; | |
4153 | ||
4154 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4155 | name_len = | |
acbbb76a | 4156 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 4157 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4158 | remap); |
6b8edfe0 SF |
4159 | name_len++; /* trailing null */ |
4160 | name_len *= 2; | |
50c2f753 | 4161 | } else { |
340625e6 | 4162 | name_len = copy_path_name(pSMB->FileName, search_name); |
6b8edfe0 SF |
4163 | } |
4164 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4165 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4166 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4167 | pSMB->ByteCount = cpu_to_le16(name_len); |
4168 | ||
4169 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4170 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4171 | if (rc) { |
f96637be | 4172 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4173 | } else if (data) { |
95390201 | 4174 | struct timespec64 ts; |
1bd5bbcb | 4175 | __u32 time = le32_to_cpu(pSMBr->last_write_time); |
ad7a2926 SF |
4176 | |
4177 | /* decode response */ | |
1bd5bbcb | 4178 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4179 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4180 | ts.tv_nsec = 0; |
4181 | ts.tv_sec = time; | |
4182 | /* decode time fields */ | |
68889f26 PS |
4183 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4184 | data->LastWriteTime = data->ChangeTime; | |
4185 | data->LastAccessTime = 0; | |
4186 | data->AllocationSize = | |
70ca734a | 4187 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4188 | data->EndOfFile = data->AllocationSize; |
4189 | data->Attributes = | |
70ca734a | 4190 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4191 | } else |
4192 | rc = -EIO; /* bad buffer passed in */ | |
4193 | ||
4194 | cifs_buf_release(pSMB); | |
4195 | ||
4196 | if (rc == -EAGAIN) | |
4197 | goto QInfRetry; | |
4198 | ||
4199 | return rc; | |
4200 | } | |
4201 | ||
bcd5357f | 4202 | int |
6d5786a3 | 4203 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4204 | u16 netfid, FILE_ALL_INFO *pFindData) |
4205 | { | |
4206 | struct smb_t2_qfi_req *pSMB = NULL; | |
4207 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4208 | int rc = 0; | |
4209 | int bytes_returned; | |
4210 | __u16 params, byte_count; | |
4211 | ||
4212 | QFileInfoRetry: | |
4213 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4214 | (void **) &pSMBr); | |
4215 | if (rc) | |
4216 | return rc; | |
4217 | ||
4218 | params = 2 /* level */ + 2 /* fid */; | |
4219 | pSMB->t2.TotalDataCount = 0; | |
4220 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4221 | /* BB find exact max data count below from sess structure BB */ | |
4222 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4223 | pSMB->t2.MaxSetupCount = 0; | |
4224 | pSMB->t2.Reserved = 0; | |
4225 | pSMB->t2.Flags = 0; | |
4226 | pSMB->t2.Timeout = 0; | |
4227 | pSMB->t2.Reserved2 = 0; | |
4228 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4229 | Fid) - 4); | |
4230 | pSMB->t2.DataCount = 0; | |
4231 | pSMB->t2.DataOffset = 0; | |
4232 | pSMB->t2.SetupCount = 1; | |
4233 | pSMB->t2.Reserved3 = 0; | |
4234 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4235 | byte_count = params + 1 /* pad */ ; | |
4236 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4237 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4238 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4239 | pSMB->Pad = 0; | |
4240 | pSMB->Fid = netfid; | |
be8e3b00 | 4241 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4242 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4243 | |
bcd5357f JL |
4244 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4245 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4246 | if (rc) { | |
ebcc943c | 4247 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4248 | } else { /* decode response */ |
4249 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4250 | |
bcd5357f JL |
4251 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4252 | rc = -EIO; | |
820a803f | 4253 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4254 | rc = -EIO; /* bad smb */ |
4255 | else if (pFindData) { | |
4256 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4257 | memcpy((char *) pFindData, | |
4258 | (char *) &pSMBr->hdr.Protocol + | |
4259 | data_offset, sizeof(FILE_ALL_INFO)); | |
4260 | } else | |
4261 | rc = -ENOMEM; | |
4262 | } | |
4263 | cifs_buf_release(pSMB); | |
4264 | if (rc == -EAGAIN) | |
4265 | goto QFileInfoRetry; | |
6b8edfe0 | 4266 | |
bcd5357f JL |
4267 | return rc; |
4268 | } | |
6b8edfe0 | 4269 | |
1da177e4 | 4270 | int |
6d5786a3 | 4271 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4272 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4273 | int legacy /* old style infolevel */, |
737b758c | 4274 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4275 | { |
68889f26 | 4276 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4277 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4278 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4279 | int rc = 0; | |
4280 | int bytes_returned; | |
4281 | int name_len; | |
4282 | __u16 params, byte_count; | |
4283 | ||
f96637be | 4284 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4285 | QPathInfoRetry: |
4286 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4287 | (void **) &pSMBr); | |
4288 | if (rc) | |
4289 | return rc; | |
4290 | ||
4291 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4292 | name_len = | |
68889f26 | 4293 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4294 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4295 | name_len++; /* trailing null */ |
4296 | name_len *= 2; | |
340625e6 RS |
4297 | } else { |
4298 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4299 | } |
4300 | ||
50c2f753 | 4301 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4302 | pSMB->TotalDataCount = 0; |
4303 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4304 | /* BB find exact max SMB PDU from sess structure BB */ |
4305 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4306 | pSMB->MaxSetupCount = 0; |
4307 | pSMB->Reserved = 0; | |
4308 | pSMB->Flags = 0; | |
4309 | pSMB->Timeout = 0; | |
4310 | pSMB->Reserved2 = 0; | |
4311 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4312 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4313 | pSMB->DataCount = 0; |
4314 | pSMB->DataOffset = 0; | |
4315 | pSMB->SetupCount = 1; | |
4316 | pSMB->Reserved3 = 0; | |
4317 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4318 | byte_count = params + 1 /* pad */ ; | |
4319 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4320 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4321 | if (legacy) |
acf1a1b1 SF |
4322 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4323 | else | |
4324 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4325 | pSMB->Reserved4 = 0; |
be8e3b00 | 4326 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4327 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4328 | ||
4329 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4330 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4331 | if (rc) { | |
f96637be | 4332 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4333 | } else { /* decode response */ |
4334 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4335 | ||
acf1a1b1 SF |
4336 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4337 | rc = -EIO; | |
820a803f | 4338 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4339 | rc = -EIO; /* bad smb */ |
820a803f | 4340 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4341 | rc = -EIO; /* 24 or 26 expected but we do not read |
4342 | last field */ | |
68889f26 | 4343 | else if (data) { |
acf1a1b1 | 4344 | int size; |
1da177e4 | 4345 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4346 | |
68889f26 PS |
4347 | /* |
4348 | * On legacy responses we do not read the last field, | |
4349 | * EAsize, fortunately since it varies by subdialect and | |
4350 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4351 | * bytes depending but we don't care here. | |
4352 | */ | |
ad7a2926 | 4353 | if (legacy) |
acf1a1b1 SF |
4354 | size = sizeof(FILE_INFO_STANDARD); |
4355 | else | |
4356 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4357 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4358 | data_offset, size); |
1da177e4 LT |
4359 | } else |
4360 | rc = -ENOMEM; | |
4361 | } | |
4362 | cifs_buf_release(pSMB); | |
4363 | if (rc == -EAGAIN) | |
4364 | goto QPathInfoRetry; | |
4365 | ||
4366 | return rc; | |
4367 | } | |
4368 | ||
c8634fd3 | 4369 | int |
6d5786a3 | 4370 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4371 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4372 | { | |
4373 | struct smb_t2_qfi_req *pSMB = NULL; | |
4374 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4375 | int rc = 0; | |
4376 | int bytes_returned; | |
4377 | __u16 params, byte_count; | |
4378 | ||
4379 | UnixQFileInfoRetry: | |
4380 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4381 | (void **) &pSMBr); | |
4382 | if (rc) | |
4383 | return rc; | |
4384 | ||
4385 | params = 2 /* level */ + 2 /* fid */; | |
4386 | pSMB->t2.TotalDataCount = 0; | |
4387 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4388 | /* BB find exact max data count below from sess structure BB */ | |
4389 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4390 | pSMB->t2.MaxSetupCount = 0; | |
4391 | pSMB->t2.Reserved = 0; | |
4392 | pSMB->t2.Flags = 0; | |
4393 | pSMB->t2.Timeout = 0; | |
4394 | pSMB->t2.Reserved2 = 0; | |
4395 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4396 | Fid) - 4); | |
4397 | pSMB->t2.DataCount = 0; | |
4398 | pSMB->t2.DataOffset = 0; | |
4399 | pSMB->t2.SetupCount = 1; | |
4400 | pSMB->t2.Reserved3 = 0; | |
4401 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4402 | byte_count = params + 1 /* pad */ ; | |
4403 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4404 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4405 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4406 | pSMB->Pad = 0; | |
4407 | pSMB->Fid = netfid; | |
be8e3b00 | 4408 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4409 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4410 | |
4411 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4412 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4413 | if (rc) { | |
ebcc943c | 4414 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4415 | } else { /* decode response */ |
4416 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4417 | ||
820a803f | 4418 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4419 | cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
c8634fd3 JL |
4420 | rc = -EIO; /* bad smb */ |
4421 | } else { | |
4422 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4423 | memcpy((char *) pFindData, | |
4424 | (char *) &pSMBr->hdr.Protocol + | |
4425 | data_offset, | |
4426 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4427 | } | |
4428 | } | |
4429 | ||
4430 | cifs_buf_release(pSMB); | |
4431 | if (rc == -EAGAIN) | |
4432 | goto UnixQFileInfoRetry; | |
4433 | ||
4434 | return rc; | |
4435 | } | |
4436 | ||
1da177e4 | 4437 | int |
6d5786a3 | 4438 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4439 | const unsigned char *searchName, |
582d21e5 | 4440 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4441 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4442 | { |
4443 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4444 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4445 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4446 | int rc = 0; | |
4447 | int bytes_returned = 0; | |
4448 | int name_len; | |
4449 | __u16 params, byte_count; | |
4450 | ||
f96637be | 4451 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4452 | UnixQPathInfoRetry: |
4453 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4454 | (void **) &pSMBr); | |
4455 | if (rc) | |
4456 | return rc; | |
4457 | ||
4458 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4459 | name_len = | |
acbbb76a SF |
4460 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4461 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4462 | name_len++; /* trailing null */ |
4463 | name_len *= 2; | |
340625e6 RS |
4464 | } else { |
4465 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
4466 | } |
4467 | ||
50c2f753 | 4468 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4469 | pSMB->TotalDataCount = 0; |
4470 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4471 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4472 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4473 | pSMB->MaxSetupCount = 0; |
4474 | pSMB->Reserved = 0; | |
4475 | pSMB->Flags = 0; | |
4476 | pSMB->Timeout = 0; | |
4477 | pSMB->Reserved2 = 0; | |
4478 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4479 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4480 | pSMB->DataCount = 0; |
4481 | pSMB->DataOffset = 0; | |
4482 | pSMB->SetupCount = 1; | |
4483 | pSMB->Reserved3 = 0; | |
4484 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4485 | byte_count = params + 1 /* pad */ ; | |
4486 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4487 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4488 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4489 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4490 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4491 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4492 | ||
4493 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4494 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4495 | if (rc) { | |
ebcc943c | 4496 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4497 | } else { /* decode response */ |
4498 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4499 | ||
820a803f | 4500 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4501 | cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
1da177e4 LT |
4502 | rc = -EIO; /* bad smb */ |
4503 | } else { | |
4504 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4505 | memcpy((char *) pFindData, | |
4506 | (char *) &pSMBr->hdr.Protocol + | |
4507 | data_offset, | |
630f3f0c | 4508 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4509 | } |
4510 | } | |
4511 | cifs_buf_release(pSMB); | |
4512 | if (rc == -EAGAIN) | |
4513 | goto UnixQPathInfoRetry; | |
4514 | ||
4515 | return rc; | |
4516 | } | |
4517 | ||
1da177e4 LT |
4518 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4519 | int | |
6d5786a3 | 4520 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4521 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4522 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4523 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4524 | { |
4525 | /* level 257 SMB_ */ | |
4526 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4527 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4528 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4529 | int rc = 0; |
4530 | int bytes_returned = 0; | |
c052e2b4 | 4531 | int name_len, remap; |
1da177e4 | 4532 | __u16 params, byte_count; |
c052e2b4 | 4533 | struct nls_table *nls_codepage; |
1da177e4 | 4534 | |
f96637be | 4535 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4536 | |
4537 | findFirstRetry: | |
4538 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4539 | (void **) &pSMBr); | |
4540 | if (rc) | |
4541 | return rc; | |
4542 | ||
c052e2b4 | 4543 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4544 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4545 | |
1da177e4 LT |
4546 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4547 | name_len = | |
acbbb76a SF |
4548 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4549 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4550 | /* We can not add the asterik earlier in case |
4551 | it got remapped to 0xF03A as if it were part of the | |
4552 | directory name instead of a wildcard */ | |
1da177e4 | 4553 | name_len *= 2; |
c052e2b4 SP |
4554 | if (msearch) { |
4555 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4556 | pSMB->FileName[name_len+1] = 0; | |
4557 | pSMB->FileName[name_len+2] = '*'; | |
4558 | pSMB->FileName[name_len+3] = 0; | |
4559 | name_len += 4; /* now the trailing null */ | |
4560 | /* null terminate just in case */ | |
4561 | pSMB->FileName[name_len] = 0; | |
4562 | pSMB->FileName[name_len+1] = 0; | |
4563 | name_len += 2; | |
4564 | } | |
340625e6 RS |
4565 | } else { |
4566 | name_len = copy_path_name(pSMB->FileName, searchName); | |
c052e2b4 | 4567 | if (msearch) { |
340625e6 RS |
4568 | if (WARN_ON_ONCE(name_len > PATH_MAX-2)) |
4569 | name_len = PATH_MAX-2; | |
4570 | /* overwrite nul byte */ | |
4571 | pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb); | |
4572 | pSMB->FileName[name_len] = '*'; | |
4573 | pSMB->FileName[name_len+1] = 0; | |
4574 | name_len += 2; | |
c052e2b4 | 4575 | } |
1da177e4 LT |
4576 | } |
4577 | ||
4578 | params = 12 + name_len /* includes null */ ; | |
4579 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4580 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4581 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4582 | pSMB->MaxSetupCount = 0; |
4583 | pSMB->Reserved = 0; | |
4584 | pSMB->Flags = 0; | |
4585 | pSMB->Timeout = 0; | |
4586 | pSMB->Reserved2 = 0; | |
4587 | byte_count = params + 1 /* pad */ ; | |
4588 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4589 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4590 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4591 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4592 | - 4); | |
1da177e4 LT |
4593 | pSMB->DataCount = 0; |
4594 | pSMB->DataOffset = 0; | |
4595 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4596 | pSMB->Reserved3 = 0; | |
4597 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4598 | pSMB->SearchAttributes = | |
4599 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4600 | ATTR_DIRECTORY); | |
50c2f753 | 4601 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4602 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4603 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4604 | ||
4605 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4606 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4607 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4608 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4609 | ||
4610 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4611 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4612 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4613 | |
88274815 SF |
4614 | if (rc) {/* BB add logic to retry regular search if Unix search |
4615 | rejected unexpectedly by server */ | |
1da177e4 | 4616 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4617 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4618 | |
88274815 | 4619 | cifs_buf_release(pSMB); |
1da177e4 LT |
4620 | |
4621 | /* BB eventually could optimize out free and realloc of buf */ | |
4622 | /* for this case */ | |
4623 | if (rc == -EAGAIN) | |
4624 | goto findFirstRetry; | |
4625 | } else { /* decode response */ | |
4626 | /* BB remember to free buffer if error BB */ | |
4627 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4628 | if (rc == 0) { |
b77d753c SF |
4629 | unsigned int lnoff; |
4630 | ||
1da177e4 | 4631 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4632 | psrch_inf->unicode = true; |
1da177e4 | 4633 | else |
4b18f2a9 | 4634 | psrch_inf->unicode = false; |
1da177e4 LT |
4635 | |
4636 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
01d1bd76 | 4637 | psrch_inf->smallBuf = false; |
50c2f753 SF |
4638 | psrch_inf->srch_entries_start = |
4639 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4640 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4641 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4642 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4643 | ||
790fe579 | 4644 | if (parms->EndofSearch) |
4b18f2a9 | 4645 | psrch_inf->endOfSearch = true; |
1da177e4 | 4646 | else |
4b18f2a9 | 4647 | psrch_inf->endOfSearch = false; |
1da177e4 | 4648 | |
50c2f753 SF |
4649 | psrch_inf->entries_in_buffer = |
4650 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4651 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4652 | psrch_inf->entries_in_buffer; |
b77d753c | 4653 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4654 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4655 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4656 | psrch_inf->last_entry = NULL; |
4657 | return rc; | |
4658 | } | |
4659 | ||
0752f152 | 4660 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4661 | lnoff; |
4662 | ||
c052e2b4 SP |
4663 | if (pnetfid) |
4664 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4665 | } else { |
4666 | cifs_buf_release(pSMB); | |
4667 | } | |
4668 | } | |
4669 | ||
4670 | return rc; | |
4671 | } | |
4672 | ||
6d5786a3 PS |
4673 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4674 | __u16 searchHandle, __u16 search_flags, | |
4675 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4676 | { |
4677 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4678 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4679 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4680 | char *response_data; |
4681 | int rc = 0; | |
9438fabb JL |
4682 | int bytes_returned; |
4683 | unsigned int name_len; | |
1da177e4 LT |
4684 | __u16 params, byte_count; |
4685 | ||
f96637be | 4686 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4687 | |
4b18f2a9 | 4688 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4689 | return -ENOENT; |
4690 | ||
4691 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4692 | (void **) &pSMBr); | |
4693 | if (rc) | |
4694 | return rc; | |
4695 | ||
50c2f753 | 4696 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4697 | byte_count = 0; |
4698 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4699 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4700 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4701 | pSMB->MaxSetupCount = 0; |
4702 | pSMB->Reserved = 0; | |
4703 | pSMB->Flags = 0; | |
4704 | pSMB->Timeout = 0; | |
4705 | pSMB->Reserved2 = 0; | |
4706 | pSMB->ParameterOffset = cpu_to_le16( | |
4707 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4708 | pSMB->DataCount = 0; | |
4709 | pSMB->DataOffset = 0; | |
4710 | pSMB->SetupCount = 1; | |
4711 | pSMB->Reserved3 = 0; | |
4712 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4713 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4714 | pSMB->SearchCount = | |
630f3f0c | 4715 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4716 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4717 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4718 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4719 | |
4720 | name_len = psrch_inf->resume_name_len; | |
4721 | params += name_len; | |
790fe579 | 4722 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4723 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4724 | byte_count += name_len; | |
ef6724e3 SF |
4725 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4726 | pSMB->ResumeFileName[name_len] = 0; | |
4727 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4728 | } else { |
4729 | rc = -EINVAL; | |
4730 | goto FNext2_err_exit; | |
4731 | } | |
4732 | byte_count = params + 1 /* pad */ ; | |
4733 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4734 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4735 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4736 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4737 | |
1da177e4 LT |
4738 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4739 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4740 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4741 | if (rc) { |
4742 | if (rc == -EBADF) { | |
4b18f2a9 | 4743 | psrch_inf->endOfSearch = true; |
6353450a | 4744 | cifs_buf_release(pSMB); |
50c2f753 | 4745 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4746 | } else |
f96637be | 4747 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4748 | } else { /* decode response */ |
4749 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4750 | |
790fe579 | 4751 | if (rc == 0) { |
b77d753c SF |
4752 | unsigned int lnoff; |
4753 | ||
1da177e4 LT |
4754 | /* BB fixme add lock for file (srch_info) struct here */ |
4755 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4756 | psrch_inf->unicode = true; |
1da177e4 | 4757 | else |
4b18f2a9 | 4758 | psrch_inf->unicode = false; |
1da177e4 LT |
4759 | response_data = (char *) &pSMBr->hdr.Protocol + |
4760 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4761 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4762 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4763 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4764 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4765 | cifs_small_buf_release( |
4766 | psrch_inf->ntwrk_buf_start); | |
4767 | else | |
4768 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4769 | psrch_inf->srch_entries_start = response_data; |
4770 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
01d1bd76 | 4771 | psrch_inf->smallBuf = false; |
790fe579 | 4772 | if (parms->EndofSearch) |
4b18f2a9 | 4773 | psrch_inf->endOfSearch = true; |
1da177e4 | 4774 | else |
4b18f2a9 | 4775 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4776 | psrch_inf->entries_in_buffer = |
4777 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4778 | psrch_inf->index_of_last_entry += |
4779 | psrch_inf->entries_in_buffer; | |
b77d753c | 4780 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4781 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4782 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4783 | psrch_inf->last_entry = NULL; |
4784 | return rc; | |
4785 | } else | |
4786 | psrch_inf->last_entry = | |
4787 | psrch_inf->srch_entries_start + lnoff; | |
4788 | ||
f96637be JP |
4789 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4790 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4791 | |
4792 | /* BB fixme add unlock here */ | |
4793 | } | |
4794 | ||
4795 | } | |
4796 | ||
4797 | /* BB On error, should we leave previous search buf (and count and | |
4798 | last entry fields) intact or free the previous one? */ | |
4799 | ||
4800 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4801 | since file handle passed in no longer valid */ | |
4802 | FNext2_err_exit: | |
4803 | if (rc != 0) | |
4804 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4805 | return rc; |
4806 | } | |
4807 | ||
4808 | int | |
6d5786a3 | 4809 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4810 | const __u16 searchHandle) |
1da177e4 LT |
4811 | { |
4812 | int rc = 0; | |
4813 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4814 | |
f96637be | 4815 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4816 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4817 | ||
4818 | /* no sense returning error if session restarted | |
4819 | as file handle has been closed */ | |
790fe579 | 4820 | if (rc == -EAGAIN) |
1da177e4 LT |
4821 | return 0; |
4822 | if (rc) | |
4823 | return rc; | |
4824 | ||
1da177e4 LT |
4825 | pSMB->FileID = searchHandle; |
4826 | pSMB->ByteCount = 0; | |
792af7b0 | 4827 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4828 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4829 | if (rc) |
f96637be | 4830 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4831 | |
44c58186 | 4832 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4833 | |
4834 | /* Since session is dead, search handle closed on server already */ | |
4835 | if (rc == -EAGAIN) | |
4836 | rc = 0; | |
4837 | ||
4838 | return rc; | |
4839 | } | |
4840 | ||
1da177e4 | 4841 | int |
6d5786a3 | 4842 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4843 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4844 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4845 | { |
4846 | int rc = 0; | |
4847 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4848 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4849 | int name_len, bytes_returned; | |
4850 | __u16 params, byte_count; | |
4851 | ||
f96637be | 4852 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4853 | if (tcon == NULL) |
50c2f753 | 4854 | return -ENODEV; |
1da177e4 LT |
4855 | |
4856 | GetInodeNumberRetry: | |
4857 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4858 | (void **) &pSMBr); |
1da177e4 LT |
4859 | if (rc) |
4860 | return rc; | |
4861 | ||
1da177e4 LT |
4862 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4863 | name_len = | |
acbbb76a | 4864 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4865 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4866 | remap); |
1da177e4 LT |
4867 | name_len++; /* trailing null */ |
4868 | name_len *= 2; | |
340625e6 RS |
4869 | } else { |
4870 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4871 | } |
4872 | ||
4873 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4874 | pSMB->TotalDataCount = 0; | |
4875 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4876 | /* BB find exact max data count below from sess structure BB */ | |
4877 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4878 | pSMB->MaxSetupCount = 0; | |
4879 | pSMB->Reserved = 0; | |
4880 | pSMB->Flags = 0; | |
4881 | pSMB->Timeout = 0; | |
4882 | pSMB->Reserved2 = 0; | |
4883 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4884 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4885 | pSMB->DataCount = 0; |
4886 | pSMB->DataOffset = 0; | |
4887 | pSMB->SetupCount = 1; | |
4888 | pSMB->Reserved3 = 0; | |
4889 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4890 | byte_count = params + 1 /* pad */ ; | |
4891 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4892 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4893 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4894 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4895 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4896 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4897 | ||
4898 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4899 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4900 | if (rc) { | |
f96637be | 4901 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4902 | } else { |
4903 | /* decode response */ | |
4904 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4905 | /* BB also check enough total bytes returned */ |
820a803f | 4906 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4907 | /* If rc should we check for EOPNOSUPP and |
4908 | disable the srvino flag? or in caller? */ | |
4909 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4910 | else { |
1da177e4 LT |
4911 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4912 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4913 | struct file_internal_info *pfinfo; |
1da177e4 | 4914 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4915 | if (count < 8) { |
f96637be | 4916 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4917 | rc = -EIO; |
4918 | goto GetInodeNumOut; | |
4919 | } | |
4920 | pfinfo = (struct file_internal_info *) | |
4921 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4922 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4923 | } |
4924 | } | |
4925 | GetInodeNumOut: | |
4926 | cifs_buf_release(pSMB); | |
4927 | if (rc == -EAGAIN) | |
4928 | goto GetInodeNumberRetry; | |
4929 | return rc; | |
4930 | } | |
1da177e4 LT |
4931 | |
4932 | int | |
6d5786a3 | 4933 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4934 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4935 | unsigned int *num_of_nodes, |
737b758c | 4936 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4937 | { |
4938 | /* TRANS2_GET_DFS_REFERRAL */ | |
4939 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4940 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4941 | int rc = 0; |
4942 | int bytes_returned; | |
4943 | int name_len; | |
1da177e4 | 4944 | __u16 params, byte_count; |
c2cf07d5 SF |
4945 | *num_of_nodes = 0; |
4946 | *target_nodes = NULL; | |
1da177e4 | 4947 | |
f96637be | 4948 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4949 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4950 | return -ENODEV; |
b327a717 | 4951 | |
1da177e4 | 4952 | getDFSRetry: |
b327a717 | 4953 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4954 | (void **) &pSMBr); |
4955 | if (rc) | |
4956 | return rc; | |
50c2f753 SF |
4957 | |
4958 | /* server pointer checked in called function, | |
1982c344 | 4959 | but should never be null here anyway */ |
88257360 | 4960 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4961 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4962 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4963 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4964 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4965 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4966 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4967 | |
4968 | if (ses->capabilities & CAP_UNICODE) { | |
4969 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4970 | name_len = | |
acbbb76a | 4971 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4972 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4973 | remap); |
1da177e4 LT |
4974 | name_len++; /* trailing null */ |
4975 | name_len *= 2; | |
50c2f753 | 4976 | } else { /* BB improve the check for buffer overruns BB */ |
340625e6 | 4977 | name_len = copy_path_name(pSMB->RequestFileName, search_name); |
1da177e4 LT |
4978 | } |
4979 | ||
65c3b205 | 4980 | if (ses->server->sign) |
38d77c50 | 4981 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4982 | |
50c2f753 | 4983 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4984 | |
1da177e4 LT |
4985 | params = 2 /* level */ + name_len /*includes null */ ; |
4986 | pSMB->TotalDataCount = 0; | |
4987 | pSMB->DataCount = 0; | |
4988 | pSMB->DataOffset = 0; | |
4989 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4990 | /* BB find exact max SMB PDU from sess structure BB */ |
4991 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4992 | pSMB->MaxSetupCount = 0; |
4993 | pSMB->Reserved = 0; | |
4994 | pSMB->Flags = 0; | |
4995 | pSMB->Timeout = 0; | |
4996 | pSMB->Reserved2 = 0; | |
4997 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4998 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4999 | pSMB->SetupCount = 1; |
5000 | pSMB->Reserved3 = 0; | |
5001 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
5002 | byte_count = params + 3 /* pad */ ; | |
5003 | pSMB->ParameterCount = cpu_to_le16(params); | |
5004 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5005 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 5006 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5007 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5008 | ||
5009 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
5010 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5011 | if (rc) { | |
f96637be | 5012 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
5013 | goto GetDFSRefExit; |
5014 | } | |
5015 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 5016 | |
c2cf07d5 | 5017 | /* BB Also check if enough total bytes returned? */ |
820a803f | 5018 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 5019 | rc = -EIO; /* bad smb */ |
fec4585f IM |
5020 | goto GetDFSRefExit; |
5021 | } | |
c2cf07d5 | 5022 | |
f96637be JP |
5023 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
5024 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 5025 | |
fec4585f | 5026 | /* parse returned result into more usable form */ |
4ecce920 AA |
5027 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
5028 | le16_to_cpu(pSMBr->t2.DataCount), | |
5029 | num_of_nodes, target_nodes, nls_codepage, | |
5030 | remap, search_name, | |
284316dd | 5031 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 5032 | |
1da177e4 | 5033 | GetDFSRefExit: |
0d817bc0 | 5034 | cifs_buf_release(pSMB); |
1da177e4 LT |
5035 | |
5036 | if (rc == -EAGAIN) | |
5037 | goto getDFSRetry; | |
5038 | ||
5039 | return rc; | |
5040 | } | |
5041 | ||
20962438 SF |
5042 | /* Query File System Info such as free space to old servers such as Win 9x */ |
5043 | int | |
6d5786a3 PS |
5044 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5045 | struct kstatfs *FSData) | |
20962438 SF |
5046 | { |
5047 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5048 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5049 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5050 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
5051 | int rc = 0; | |
5052 | int bytes_returned = 0; | |
5053 | __u16 params, byte_count; | |
5054 | ||
f96637be | 5055 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
5056 | oldQFSInfoRetry: |
5057 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5058 | (void **) &pSMBr); | |
5059 | if (rc) | |
5060 | return rc; | |
20962438 SF |
5061 | |
5062 | params = 2; /* level */ | |
5063 | pSMB->TotalDataCount = 0; | |
5064 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5065 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5066 | pSMB->MaxSetupCount = 0; | |
5067 | pSMB->Reserved = 0; | |
5068 | pSMB->Flags = 0; | |
5069 | pSMB->Timeout = 0; | |
5070 | pSMB->Reserved2 = 0; | |
5071 | byte_count = params + 1 /* pad */ ; | |
5072 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5073 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5074 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
5075 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
5076 | pSMB->DataCount = 0; | |
5077 | pSMB->DataOffset = 0; | |
5078 | pSMB->SetupCount = 1; | |
5079 | pSMB->Reserved3 = 0; | |
5080 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5081 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 5082 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
5083 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5084 | ||
5085 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5086 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5087 | if (rc) { | |
f96637be | 5088 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
5089 | } else { /* decode response */ |
5090 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5091 | ||
820a803f | 5092 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
5093 | rc = -EIO; /* bad smb */ |
5094 | else { | |
5095 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 5096 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 5097 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 5098 | |
50c2f753 | 5099 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
5100 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
5101 | FSData->f_bsize = | |
5102 | le16_to_cpu(response_data->BytesPerSector) * | |
5103 | le32_to_cpu(response_data-> | |
5104 | SectorsPerAllocationUnit); | |
5a519bea SF |
5105 | /* |
5106 | * much prefer larger but if server doesn't report | |
5107 | * a valid size than 4K is a reasonable minimum | |
5108 | */ | |
5109 | if (FSData->f_bsize < 512) | |
5110 | FSData->f_bsize = 4096; | |
5111 | ||
20962438 | 5112 | FSData->f_blocks = |
50c2f753 | 5113 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
5114 | FSData->f_bfree = FSData->f_bavail = |
5115 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5116 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5117 | (unsigned long long)FSData->f_blocks, | |
5118 | (unsigned long long)FSData->f_bfree, | |
5119 | FSData->f_bsize); | |
20962438 SF |
5120 | } |
5121 | } | |
5122 | cifs_buf_release(pSMB); | |
5123 | ||
5124 | if (rc == -EAGAIN) | |
5125 | goto oldQFSInfoRetry; | |
5126 | ||
5127 | return rc; | |
5128 | } | |
5129 | ||
1da177e4 | 5130 | int |
6d5786a3 PS |
5131 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5132 | struct kstatfs *FSData) | |
1da177e4 LT |
5133 | { |
5134 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5135 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5136 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5137 | FILE_SYSTEM_INFO *response_data; | |
5138 | int rc = 0; | |
5139 | int bytes_returned = 0; | |
5140 | __u16 params, byte_count; | |
5141 | ||
f96637be | 5142 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5143 | QFSInfoRetry: |
5144 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5145 | (void **) &pSMBr); | |
5146 | if (rc) | |
5147 | return rc; | |
5148 | ||
5149 | params = 2; /* level */ | |
5150 | pSMB->TotalDataCount = 0; | |
5151 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5152 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5153 | pSMB->MaxSetupCount = 0; |
5154 | pSMB->Reserved = 0; | |
5155 | pSMB->Flags = 0; | |
5156 | pSMB->Timeout = 0; | |
5157 | pSMB->Reserved2 = 0; | |
5158 | byte_count = params + 1 /* pad */ ; | |
5159 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5160 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5161 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5162 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5163 | pSMB->DataCount = 0; |
5164 | pSMB->DataOffset = 0; | |
5165 | pSMB->SetupCount = 1; | |
5166 | pSMB->Reserved3 = 0; | |
5167 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5168 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5169 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5170 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5171 | ||
5172 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5173 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5174 | if (rc) { | |
f96637be | 5175 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5176 | } else { /* decode response */ |
50c2f753 | 5177 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5178 | |
820a803f | 5179 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5180 | rc = -EIO; /* bad smb */ |
5181 | else { | |
5182 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5183 | |
5184 | response_data = | |
5185 | (FILE_SYSTEM_INFO | |
5186 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5187 | data_offset); | |
5188 | FSData->f_bsize = | |
5189 | le32_to_cpu(response_data->BytesPerSector) * | |
5190 | le32_to_cpu(response_data-> | |
5191 | SectorsPerAllocationUnit); | |
5a519bea SF |
5192 | /* |
5193 | * much prefer larger but if server doesn't report | |
5194 | * a valid size than 4K is a reasonable minimum | |
5195 | */ | |
5196 | if (FSData->f_bsize < 512) | |
5197 | FSData->f_bsize = 4096; | |
5198 | ||
1da177e4 LT |
5199 | FSData->f_blocks = |
5200 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5201 | FSData->f_bfree = FSData->f_bavail = | |
5202 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5203 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5204 | (unsigned long long)FSData->f_blocks, | |
5205 | (unsigned long long)FSData->f_bfree, | |
5206 | FSData->f_bsize); | |
1da177e4 LT |
5207 | } |
5208 | } | |
5209 | cifs_buf_release(pSMB); | |
5210 | ||
5211 | if (rc == -EAGAIN) | |
5212 | goto QFSInfoRetry; | |
5213 | ||
5214 | return rc; | |
5215 | } | |
5216 | ||
5217 | int | |
6d5786a3 | 5218 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5219 | { |
5220 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5221 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5222 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5223 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5224 | int rc = 0; | |
5225 | int bytes_returned = 0; | |
5226 | __u16 params, byte_count; | |
5227 | ||
f96637be | 5228 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5229 | QFSAttributeRetry: |
5230 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5231 | (void **) &pSMBr); | |
5232 | if (rc) | |
5233 | return rc; | |
5234 | ||
5235 | params = 2; /* level */ | |
5236 | pSMB->TotalDataCount = 0; | |
5237 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5238 | /* BB find exact max SMB PDU from sess structure BB */ |
5239 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5240 | pSMB->MaxSetupCount = 0; |
5241 | pSMB->Reserved = 0; | |
5242 | pSMB->Flags = 0; | |
5243 | pSMB->Timeout = 0; | |
5244 | pSMB->Reserved2 = 0; | |
5245 | byte_count = params + 1 /* pad */ ; | |
5246 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5247 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5248 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5249 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5250 | pSMB->DataCount = 0; |
5251 | pSMB->DataOffset = 0; | |
5252 | pSMB->SetupCount = 1; | |
5253 | pSMB->Reserved3 = 0; | |
5254 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5255 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5256 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5257 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5258 | ||
5259 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5260 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5261 | if (rc) { | |
f96637be | 5262 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5263 | } else { /* decode response */ |
5264 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5265 | ||
820a803f | 5266 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5267 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5268 | rc = -EIO; /* bad smb */ |
5269 | } else { | |
5270 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5271 | response_data = | |
5272 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5273 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5274 | data_offset); | |
5275 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5276 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5277 | } |
5278 | } | |
5279 | cifs_buf_release(pSMB); | |
5280 | ||
5281 | if (rc == -EAGAIN) | |
5282 | goto QFSAttributeRetry; | |
5283 | ||
5284 | return rc; | |
5285 | } | |
5286 | ||
5287 | int | |
6d5786a3 | 5288 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5289 | { |
5290 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5291 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5292 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5293 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5294 | int rc = 0; | |
5295 | int bytes_returned = 0; | |
5296 | __u16 params, byte_count; | |
5297 | ||
f96637be | 5298 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5299 | QFSDeviceRetry: |
5300 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5301 | (void **) &pSMBr); | |
5302 | if (rc) | |
5303 | return rc; | |
5304 | ||
5305 | params = 2; /* level */ | |
5306 | pSMB->TotalDataCount = 0; | |
5307 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5308 | /* BB find exact max SMB PDU from sess structure BB */ |
5309 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5310 | pSMB->MaxSetupCount = 0; |
5311 | pSMB->Reserved = 0; | |
5312 | pSMB->Flags = 0; | |
5313 | pSMB->Timeout = 0; | |
5314 | pSMB->Reserved2 = 0; | |
5315 | byte_count = params + 1 /* pad */ ; | |
5316 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5317 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5318 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5319 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5320 | |
5321 | pSMB->DataCount = 0; | |
5322 | pSMB->DataOffset = 0; | |
5323 | pSMB->SetupCount = 1; | |
5324 | pSMB->Reserved3 = 0; | |
5325 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5326 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5327 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5328 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5329 | ||
5330 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5331 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5332 | if (rc) { | |
f96637be | 5333 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5334 | } else { /* decode response */ |
5335 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5336 | ||
820a803f JL |
5337 | if (rc || get_bcc(&pSMBr->hdr) < |
5338 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5339 | rc = -EIO; /* bad smb */ |
5340 | else { | |
5341 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5342 | response_data = | |
737b758c SF |
5343 | (FILE_SYSTEM_DEVICE_INFO *) |
5344 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5345 | data_offset); |
5346 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5347 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5348 | } |
5349 | } | |
5350 | cifs_buf_release(pSMB); | |
5351 | ||
5352 | if (rc == -EAGAIN) | |
5353 | goto QFSDeviceRetry; | |
5354 | ||
5355 | return rc; | |
5356 | } | |
5357 | ||
5358 | int | |
6d5786a3 | 5359 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5360 | { |
5361 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5362 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5363 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5364 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5365 | int rc = 0; | |
5366 | int bytes_returned = 0; | |
5367 | __u16 params, byte_count; | |
5368 | ||
f96637be | 5369 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5370 | QFSUnixRetry: |
f569599a JL |
5371 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5372 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5373 | if (rc) |
5374 | return rc; | |
5375 | ||
5376 | params = 2; /* level */ | |
5377 | pSMB->TotalDataCount = 0; | |
5378 | pSMB->DataCount = 0; | |
5379 | pSMB->DataOffset = 0; | |
5380 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5381 | /* BB find exact max SMB PDU from sess structure BB */ |
5382 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5383 | pSMB->MaxSetupCount = 0; |
5384 | pSMB->Reserved = 0; | |
5385 | pSMB->Flags = 0; | |
5386 | pSMB->Timeout = 0; | |
5387 | pSMB->Reserved2 = 0; | |
5388 | byte_count = params + 1 /* pad */ ; | |
5389 | pSMB->ParameterCount = cpu_to_le16(params); | |
5390 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5391 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5392 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5393 | pSMB->SetupCount = 1; |
5394 | pSMB->Reserved3 = 0; | |
5395 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5396 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5397 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5398 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5399 | ||
5400 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5401 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5402 | if (rc) { | |
f96637be | 5403 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5404 | } else { /* decode response */ |
5405 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5406 | ||
820a803f | 5407 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5408 | rc = -EIO; /* bad smb */ |
5409 | } else { | |
5410 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5411 | response_data = | |
5412 | (FILE_SYSTEM_UNIX_INFO | |
5413 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5414 | data_offset); | |
5415 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5416 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5417 | } |
5418 | } | |
5419 | cifs_buf_release(pSMB); | |
5420 | ||
5421 | if (rc == -EAGAIN) | |
5422 | goto QFSUnixRetry; | |
5423 | ||
5424 | ||
5425 | return rc; | |
5426 | } | |
5427 | ||
ac67055e | 5428 | int |
6d5786a3 | 5429 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5430 | { |
5431 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5432 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5433 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5434 | int rc = 0; | |
5435 | int bytes_returned = 0; | |
5436 | __u16 params, param_offset, offset, byte_count; | |
5437 | ||
f96637be | 5438 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5439 | SETFSUnixRetry: |
f26282c9 | 5440 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5441 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5442 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5443 | if (rc) |
5444 | return rc; | |
5445 | ||
5446 | params = 4; /* 2 bytes zero followed by info level. */ | |
5447 | pSMB->MaxSetupCount = 0; | |
5448 | pSMB->Reserved = 0; | |
5449 | pSMB->Flags = 0; | |
5450 | pSMB->Timeout = 0; | |
5451 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5452 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5453 | - 4; | |
ac67055e JA |
5454 | offset = param_offset + params; |
5455 | ||
5456 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5457 | /* BB find exact max SMB PDU from sess structure BB */ |
5458 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5459 | pSMB->SetupCount = 1; |
5460 | pSMB->Reserved3 = 0; | |
5461 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5462 | byte_count = 1 /* pad */ + params + 12; | |
5463 | ||
5464 | pSMB->DataCount = cpu_to_le16(12); | |
5465 | pSMB->ParameterCount = cpu_to_le16(params); | |
5466 | pSMB->TotalDataCount = pSMB->DataCount; | |
5467 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5468 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5469 | pSMB->DataOffset = cpu_to_le16(offset); | |
5470 | ||
5471 | /* Params. */ | |
5472 | pSMB->FileNum = 0; | |
5473 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5474 | ||
5475 | /* Data. */ | |
5476 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5477 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5478 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5479 | ||
be8e3b00 | 5480 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5481 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5482 | ||
5483 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5484 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5485 | if (rc) { | |
f96637be | 5486 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5487 | } else { /* decode response */ |
5488 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5489 | if (rc) |
ac67055e | 5490 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5491 | } |
5492 | cifs_buf_release(pSMB); | |
5493 | ||
5494 | if (rc == -EAGAIN) | |
5495 | goto SETFSUnixRetry; | |
5496 | ||
5497 | return rc; | |
5498 | } | |
5499 | ||
5500 | ||
1da177e4 LT |
5501 | |
5502 | int | |
6d5786a3 | 5503 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5504 | struct kstatfs *FSData) |
1da177e4 LT |
5505 | { |
5506 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5507 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5508 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5509 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5510 | int rc = 0; | |
5511 | int bytes_returned = 0; | |
5512 | __u16 params, byte_count; | |
5513 | ||
f96637be | 5514 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5515 | QFSPosixRetry: |
5516 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5517 | (void **) &pSMBr); | |
5518 | if (rc) | |
5519 | return rc; | |
5520 | ||
5521 | params = 2; /* level */ | |
5522 | pSMB->TotalDataCount = 0; | |
5523 | pSMB->DataCount = 0; | |
5524 | pSMB->DataOffset = 0; | |
5525 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5526 | /* BB find exact max SMB PDU from sess structure BB */ |
5527 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5528 | pSMB->MaxSetupCount = 0; |
5529 | pSMB->Reserved = 0; | |
5530 | pSMB->Flags = 0; | |
5531 | pSMB->Timeout = 0; | |
5532 | pSMB->Reserved2 = 0; | |
5533 | byte_count = params + 1 /* pad */ ; | |
5534 | pSMB->ParameterCount = cpu_to_le16(params); | |
5535 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5536 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5537 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5538 | pSMB->SetupCount = 1; |
5539 | pSMB->Reserved3 = 0; | |
5540 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5541 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5542 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5543 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5544 | ||
5545 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5546 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5547 | if (rc) { | |
f96637be | 5548 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5549 | } else { /* decode response */ |
5550 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5551 | ||
820a803f | 5552 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5553 | rc = -EIO; /* bad smb */ |
5554 | } else { | |
5555 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5556 | response_data = | |
5557 | (FILE_SYSTEM_POSIX_INFO | |
5558 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5559 | data_offset); | |
5560 | FSData->f_bsize = | |
5561 | le32_to_cpu(response_data->BlockSize); | |
5a519bea SF |
5562 | /* |
5563 | * much prefer larger but if server doesn't report | |
5564 | * a valid size than 4K is a reasonable minimum | |
5565 | */ | |
5566 | if (FSData->f_bsize < 512) | |
5567 | FSData->f_bsize = 4096; | |
5568 | ||
1da177e4 LT |
5569 | FSData->f_blocks = |
5570 | le64_to_cpu(response_data->TotalBlocks); | |
5571 | FSData->f_bfree = | |
5572 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5573 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5574 | FSData->f_bavail = FSData->f_bfree; |
5575 | } else { | |
5576 | FSData->f_bavail = | |
50c2f753 | 5577 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5578 | } |
790fe579 | 5579 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5580 | FSData->f_files = |
50c2f753 | 5581 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5582 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5583 | FSData->f_ffree = |
50c2f753 | 5584 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5585 | } |
5586 | } | |
5587 | cifs_buf_release(pSMB); | |
5588 | ||
5589 | if (rc == -EAGAIN) | |
5590 | goto QFSPosixRetry; | |
5591 | ||
5592 | return rc; | |
5593 | } | |
5594 | ||
5595 | ||
d1433418 PS |
5596 | /* |
5597 | * We can not use write of zero bytes trick to set file size due to need for | |
5598 | * large file support. Also note that this SetPathInfo is preferred to | |
5599 | * SetFileInfo based method in next routine which is only needed to work around | |
5600 | * a sharing violation bugin Samba which this routine can run into. | |
5601 | */ | |
1da177e4 | 5602 | int |
6d5786a3 | 5603 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5604 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5605 | bool set_allocation) | |
1da177e4 LT |
5606 | { |
5607 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5608 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5609 | struct file_end_of_file_info *parm_data; | |
5610 | int name_len; | |
5611 | int rc = 0; | |
5612 | int bytes_returned = 0; | |
2baa2682 | 5613 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5614 | |
1da177e4 LT |
5615 | __u16 params, byte_count, data_count, param_offset, offset; |
5616 | ||
f96637be | 5617 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5618 | SetEOFRetry: |
5619 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5620 | (void **) &pSMBr); | |
5621 | if (rc) | |
5622 | return rc; | |
5623 | ||
5624 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5625 | name_len = | |
d1433418 PS |
5626 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5627 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5628 | name_len++; /* trailing null */ |
5629 | name_len *= 2; | |
340625e6 RS |
5630 | } else { |
5631 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5632 | } |
5633 | params = 6 + name_len; | |
26f57364 | 5634 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5635 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5636 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5637 | pSMB->MaxSetupCount = 0; |
5638 | pSMB->Reserved = 0; | |
5639 | pSMB->Flags = 0; | |
5640 | pSMB->Timeout = 0; | |
5641 | pSMB->Reserved2 = 0; | |
5642 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5643 | InformationLevel) - 4; |
1da177e4 | 5644 | offset = param_offset + params; |
d1433418 | 5645 | if (set_allocation) { |
50c2f753 SF |
5646 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5647 | pSMB->InformationLevel = | |
5648 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5649 | else | |
5650 | pSMB->InformationLevel = | |
5651 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5652 | } else /* Set File Size */ { | |
1da177e4 LT |
5653 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5654 | pSMB->InformationLevel = | |
50c2f753 | 5655 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5656 | else |
5657 | pSMB->InformationLevel = | |
50c2f753 | 5658 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5659 | } |
5660 | ||
5661 | parm_data = | |
5662 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5663 | offset); | |
5664 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5665 | pSMB->DataOffset = cpu_to_le16(offset); | |
5666 | pSMB->SetupCount = 1; | |
5667 | pSMB->Reserved3 = 0; | |
5668 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5669 | byte_count = 3 /* pad */ + params + data_count; | |
5670 | pSMB->DataCount = cpu_to_le16(data_count); | |
5671 | pSMB->TotalDataCount = pSMB->DataCount; | |
5672 | pSMB->ParameterCount = cpu_to_le16(params); | |
5673 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5674 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5675 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5676 | parm_data->FileSize = cpu_to_le64(size); |
5677 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5678 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5679 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5680 | if (rc) |
f96637be | 5681 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5682 | |
5683 | cifs_buf_release(pSMB); | |
5684 | ||
5685 | if (rc == -EAGAIN) | |
5686 | goto SetEOFRetry; | |
5687 | ||
5688 | return rc; | |
5689 | } | |
5690 | ||
5691 | int | |
d1433418 PS |
5692 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5693 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5694 | { |
5695 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5696 | struct file_end_of_file_info *parm_data; |
5697 | int rc = 0; | |
1da177e4 LT |
5698 | __u16 params, param_offset, offset, byte_count, count; |
5699 | ||
f96637be JP |
5700 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5701 | (long long)size); | |
cd63499c SF |
5702 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5703 | ||
1da177e4 LT |
5704 | if (rc) |
5705 | return rc; | |
5706 | ||
d1433418 PS |
5707 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5708 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5709 | |
1da177e4 LT |
5710 | params = 6; |
5711 | pSMB->MaxSetupCount = 0; | |
5712 | pSMB->Reserved = 0; | |
5713 | pSMB->Flags = 0; | |
5714 | pSMB->Timeout = 0; | |
5715 | pSMB->Reserved2 = 0; | |
5716 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5717 | offset = param_offset + params; | |
5718 | ||
1da177e4 LT |
5719 | count = sizeof(struct file_end_of_file_info); |
5720 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5721 | /* BB find exact max SMB PDU from sess structure BB */ |
5722 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5723 | pSMB->SetupCount = 1; |
5724 | pSMB->Reserved3 = 0; | |
5725 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5726 | byte_count = 3 /* pad */ + params + count; | |
5727 | pSMB->DataCount = cpu_to_le16(count); | |
5728 | pSMB->ParameterCount = cpu_to_le16(params); | |
5729 | pSMB->TotalDataCount = pSMB->DataCount; | |
5730 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5731 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5732 | parm_data = | |
50c2f753 SF |
5733 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5734 | + offset); | |
1da177e4 LT |
5735 | pSMB->DataOffset = cpu_to_le16(offset); |
5736 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5737 | pSMB->Fid = cfile->fid.netfid; |
5738 | if (set_allocation) { | |
1da177e4 LT |
5739 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5740 | pSMB->InformationLevel = | |
5741 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5742 | else | |
5743 | pSMB->InformationLevel = | |
5744 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5745 | } else /* Set File Size */ { |
1da177e4 LT |
5746 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5747 | pSMB->InformationLevel = | |
50c2f753 | 5748 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5749 | else |
5750 | pSMB->InformationLevel = | |
50c2f753 | 5751 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5752 | } |
5753 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5754 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5755 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5756 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5757 | cifs_small_buf_release(pSMB); |
1da177e4 | 5758 | if (rc) { |
f96637be JP |
5759 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5760 | rc); | |
1da177e4 LT |
5761 | } |
5762 | ||
50c2f753 | 5763 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5764 | since file handle passed in no longer valid */ |
5765 | ||
5766 | return rc; | |
5767 | } | |
5768 | ||
50c2f753 | 5769 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5770 | an open handle, rather than by pathname - this is awkward due to |
5771 | potential access conflicts on the open, but it is unavoidable for these | |
5772 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5773 | time and resort to the original setpathinfo level which takes the ancient | |
5774 | DOS time format with 2 second granularity */ | |
5775 | int | |
6d5786a3 | 5776 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5777 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5778 | { |
5779 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5780 | char *data_offset; |
5781 | int rc = 0; | |
1da177e4 LT |
5782 | __u16 params, param_offset, offset, byte_count, count; |
5783 | ||
f96637be | 5784 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5785 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5786 | ||
1da177e4 LT |
5787 | if (rc) |
5788 | return rc; | |
5789 | ||
2dd2dfa0 JL |
5790 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5791 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5792 | |
1da177e4 LT |
5793 | params = 6; |
5794 | pSMB->MaxSetupCount = 0; | |
5795 | pSMB->Reserved = 0; | |
5796 | pSMB->Flags = 0; | |
5797 | pSMB->Timeout = 0; | |
5798 | pSMB->Reserved2 = 0; | |
5799 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5800 | offset = param_offset + params; | |
5801 | ||
b2a3ad9c JL |
5802 | data_offset = (char *)pSMB + |
5803 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5804 | |
26f57364 | 5805 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5806 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5807 | /* BB find max SMB PDU from sess */ |
5808 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5809 | pSMB->SetupCount = 1; |
5810 | pSMB->Reserved3 = 0; | |
5811 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5812 | byte_count = 3 /* pad */ + params + count; | |
5813 | pSMB->DataCount = cpu_to_le16(count); | |
5814 | pSMB->ParameterCount = cpu_to_le16(params); | |
5815 | pSMB->TotalDataCount = pSMB->DataCount; | |
5816 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5817 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5818 | pSMB->DataOffset = cpu_to_le16(offset); | |
5819 | pSMB->Fid = fid; | |
5820 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5821 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5822 | else | |
5823 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5824 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5825 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5826 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5827 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5828 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5829 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5830 | if (rc) |
f96637be JP |
5831 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5832 | rc); | |
1da177e4 | 5833 | |
50c2f753 | 5834 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5835 | since file handle passed in no longer valid */ |
5836 | ||
5837 | return rc; | |
5838 | } | |
5839 | ||
6d22f098 | 5840 | int |
6d5786a3 | 5841 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5842 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5843 | { | |
5844 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5845 | char *data_offset; | |
5846 | int rc = 0; | |
5847 | __u16 params, param_offset, offset, byte_count, count; | |
5848 | ||
f96637be | 5849 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5850 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5851 | ||
5852 | if (rc) | |
5853 | return rc; | |
5854 | ||
5855 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5856 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5857 | ||
5858 | params = 6; | |
5859 | pSMB->MaxSetupCount = 0; | |
5860 | pSMB->Reserved = 0; | |
5861 | pSMB->Flags = 0; | |
5862 | pSMB->Timeout = 0; | |
5863 | pSMB->Reserved2 = 0; | |
5864 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5865 | offset = param_offset + params; | |
5866 | ||
5867 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5868 | ||
5869 | count = 1; | |
5870 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5871 | /* BB find max SMB PDU from sess */ | |
5872 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5873 | pSMB->SetupCount = 1; | |
5874 | pSMB->Reserved3 = 0; | |
5875 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5876 | byte_count = 3 /* pad */ + params + count; | |
5877 | pSMB->DataCount = cpu_to_le16(count); | |
5878 | pSMB->ParameterCount = cpu_to_le16(params); | |
5879 | pSMB->TotalDataCount = pSMB->DataCount; | |
5880 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5881 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5882 | pSMB->DataOffset = cpu_to_le16(offset); | |
5883 | pSMB->Fid = fid; | |
5884 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5885 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5886 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5887 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5888 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5889 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5890 | cifs_small_buf_release(pSMB); |
6d22f098 | 5891 | if (rc) |
f96637be | 5892 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5893 | |
5894 | return rc; | |
5895 | } | |
1da177e4 LT |
5896 | |
5897 | int | |
6d5786a3 | 5898 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5899 | const char *fileName, const FILE_BASIC_INFO *data, |
5900 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5901 | { |
5902 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5903 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5904 | int name_len; | |
5905 | int rc = 0; | |
5906 | int bytes_returned = 0; | |
5907 | char *data_offset; | |
5908 | __u16 params, param_offset, offset, byte_count, count; | |
5909 | ||
f96637be | 5910 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5911 | |
5912 | SetTimesRetry: | |
5913 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5914 | (void **) &pSMBr); | |
5915 | if (rc) | |
5916 | return rc; | |
5917 | ||
5918 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5919 | name_len = | |
acbbb76a SF |
5920 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5921 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5922 | name_len++; /* trailing null */ |
5923 | name_len *= 2; | |
340625e6 RS |
5924 | } else { |
5925 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5926 | } |
5927 | ||
5928 | params = 6 + name_len; | |
26f57364 | 5929 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5930 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5931 | /* BB find max SMB PDU from sess structure BB */ |
5932 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5933 | pSMB->MaxSetupCount = 0; |
5934 | pSMB->Reserved = 0; | |
5935 | pSMB->Flags = 0; | |
5936 | pSMB->Timeout = 0; | |
5937 | pSMB->Reserved2 = 0; | |
5938 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5939 | InformationLevel) - 4; |
1da177e4 LT |
5940 | offset = param_offset + params; |
5941 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5942 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5943 | pSMB->DataOffset = cpu_to_le16(offset); | |
5944 | pSMB->SetupCount = 1; | |
5945 | pSMB->Reserved3 = 0; | |
5946 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5947 | byte_count = 3 /* pad */ + params + count; | |
5948 | ||
5949 | pSMB->DataCount = cpu_to_le16(count); | |
5950 | pSMB->ParameterCount = cpu_to_le16(params); | |
5951 | pSMB->TotalDataCount = pSMB->DataCount; | |
5952 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5953 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5954 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5955 | else | |
5956 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5957 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5958 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5959 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5960 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5961 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5962 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5963 | if (rc) |
f96637be | 5964 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5965 | |
5966 | cifs_buf_release(pSMB); | |
5967 | ||
5968 | if (rc == -EAGAIN) | |
5969 | goto SetTimesRetry; | |
5970 | ||
5971 | return rc; | |
5972 | } | |
5973 | ||
5974 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5975 | /* Can be used to set attributes */ | |
5976 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5977 | handling it anyway and NT4 was what we thought it would be needed for | |
5978 | Do not delete it until we prove whether needed for Win9x though */ | |
5979 | int | |
6d5786a3 | 5980 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5981 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5982 | { | |
5983 | SETATTR_REQ *pSMB = NULL; | |
5984 | SETATTR_RSP *pSMBr = NULL; | |
5985 | int rc = 0; | |
5986 | int bytes_returned; | |
5987 | int name_len; | |
5988 | ||
f96637be | 5989 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5990 | |
5991 | SetAttrLgcyRetry: | |
5992 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5993 | (void **) &pSMBr); | |
5994 | if (rc) | |
5995 | return rc; | |
5996 | ||
5997 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5998 | name_len = | |
acbbb76a SF |
5999 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
6000 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
6001 | name_len++; /* trailing null */ |
6002 | name_len *= 2; | |
340625e6 RS |
6003 | } else { |
6004 | name_len = copy_path_name(pSMB->fileName, fileName); | |
1da177e4 LT |
6005 | } |
6006 | pSMB->attr = cpu_to_le16(dos_attrs); | |
6007 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 6008 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
6009 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
6010 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6011 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6012 | if (rc) |
f96637be | 6013 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
6014 | |
6015 | cifs_buf_release(pSMB); | |
6016 | ||
6017 | if (rc == -EAGAIN) | |
6018 | goto SetAttrLgcyRetry; | |
6019 | ||
6020 | return rc; | |
6021 | } | |
6022 | #endif /* temporarily unneeded SetAttr legacy function */ | |
6023 | ||
654cf14a JL |
6024 | static void |
6025 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
6026 | const struct cifs_unix_set_info_args *args) | |
6027 | { | |
49418b2c | 6028 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
6029 | u64 mode = args->mode; |
6030 | ||
49418b2c EB |
6031 | if (uid_valid(args->uid)) |
6032 | uid = from_kuid(&init_user_ns, args->uid); | |
6033 | if (gid_valid(args->gid)) | |
6034 | gid = from_kgid(&init_user_ns, args->gid); | |
6035 | ||
654cf14a JL |
6036 | /* |
6037 | * Samba server ignores set of file size to zero due to bugs in some | |
6038 | * older clients, but we should be precise - we use SetFileSize to | |
6039 | * set file size and do not want to truncate file size to zero | |
25985edc | 6040 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
6041 | * zero instead of -1 here |
6042 | */ | |
6043 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
6044 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
6045 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
6046 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
6047 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
6048 | data_offset->Uid = cpu_to_le64(uid); |
6049 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
6050 | /* better to leave device as zero when it is */ |
6051 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
6052 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
6053 | data_offset->Permissions = cpu_to_le64(mode); | |
6054 | ||
6055 | if (S_ISREG(mode)) | |
6056 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
6057 | else if (S_ISDIR(mode)) | |
6058 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
6059 | else if (S_ISLNK(mode)) | |
6060 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
6061 | else if (S_ISCHR(mode)) | |
6062 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
6063 | else if (S_ISBLK(mode)) | |
6064 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
6065 | else if (S_ISFIFO(mode)) | |
6066 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
6067 | else if (S_ISSOCK(mode)) | |
6068 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
6069 | } | |
6070 | ||
3bbeeb3c | 6071 | int |
6d5786a3 | 6072 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
6073 | const struct cifs_unix_set_info_args *args, |
6074 | u16 fid, u32 pid_of_opener) | |
6075 | { | |
6076 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 6077 | char *data_offset; |
3bbeeb3c JL |
6078 | int rc = 0; |
6079 | u16 params, param_offset, offset, byte_count, count; | |
6080 | ||
f96637be | 6081 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
6082 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
6083 | ||
6084 | if (rc) | |
6085 | return rc; | |
6086 | ||
6087 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
6088 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
6089 | ||
6090 | params = 6; | |
6091 | pSMB->MaxSetupCount = 0; | |
6092 | pSMB->Reserved = 0; | |
6093 | pSMB->Flags = 0; | |
6094 | pSMB->Timeout = 0; | |
6095 | pSMB->Reserved2 = 0; | |
6096 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
6097 | offset = param_offset + params; | |
6098 | ||
b2a3ad9c JL |
6099 | data_offset = (char *)pSMB + |
6100 | offsetof(struct smb_hdr, Protocol) + offset; | |
6101 | ||
3bbeeb3c JL |
6102 | count = sizeof(FILE_UNIX_BASIC_INFO); |
6103 | ||
6104 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
6105 | /* BB find max SMB PDU from sess */ | |
6106 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
6107 | pSMB->SetupCount = 1; | |
6108 | pSMB->Reserved3 = 0; | |
6109 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
6110 | byte_count = 3 /* pad */ + params + count; | |
6111 | pSMB->DataCount = cpu_to_le16(count); | |
6112 | pSMB->ParameterCount = cpu_to_le16(params); | |
6113 | pSMB->TotalDataCount = pSMB->DataCount; | |
6114 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6115 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6116 | pSMB->DataOffset = cpu_to_le16(offset); | |
6117 | pSMB->Fid = fid; | |
6118 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6119 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6120 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
6121 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6122 | ||
b2a3ad9c | 6123 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 6124 | |
792af7b0 | 6125 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 6126 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 6127 | if (rc) |
f96637be JP |
6128 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
6129 | rc); | |
3bbeeb3c JL |
6130 | |
6131 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
6132 | since file handle passed in no longer valid */ | |
6133 | ||
6134 | return rc; | |
6135 | } | |
6136 | ||
1da177e4 | 6137 | int |
6d5786a3 | 6138 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6139 | const char *file_name, |
01ea95e3 JL |
6140 | const struct cifs_unix_set_info_args *args, |
6141 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6142 | { |
6143 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6144 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6145 | int name_len; | |
6146 | int rc = 0; | |
6147 | int bytes_returned = 0; | |
6148 | FILE_UNIX_BASIC_INFO *data_offset; | |
6149 | __u16 params, param_offset, offset, count, byte_count; | |
6150 | ||
f96637be | 6151 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6152 | setPermsRetry: |
6153 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6154 | (void **) &pSMBr); | |
6155 | if (rc) | |
6156 | return rc; | |
6157 | ||
6158 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6159 | name_len = | |
ff691e96 | 6160 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6161 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6162 | name_len++; /* trailing null */ |
6163 | name_len *= 2; | |
340625e6 RS |
6164 | } else { |
6165 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
6166 | } |
6167 | ||
6168 | params = 6 + name_len; | |
26f57364 | 6169 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6170 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6171 | /* BB find max SMB PDU from sess structure BB */ |
6172 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6173 | pSMB->MaxSetupCount = 0; |
6174 | pSMB->Reserved = 0; | |
6175 | pSMB->Flags = 0; | |
6176 | pSMB->Timeout = 0; | |
6177 | pSMB->Reserved2 = 0; | |
6178 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6179 | InformationLevel) - 4; |
1da177e4 LT |
6180 | offset = param_offset + params; |
6181 | data_offset = | |
6182 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6183 | offset); | |
6184 | memset(data_offset, 0, count); | |
6185 | pSMB->DataOffset = cpu_to_le16(offset); | |
6186 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6187 | pSMB->SetupCount = 1; | |
6188 | pSMB->Reserved3 = 0; | |
6189 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6190 | byte_count = 3 /* pad */ + params + count; | |
6191 | pSMB->ParameterCount = cpu_to_le16(params); | |
6192 | pSMB->DataCount = cpu_to_le16(count); | |
6193 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6194 | pSMB->TotalDataCount = pSMB->DataCount; | |
6195 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6196 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6197 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6198 | |
654cf14a | 6199 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6200 | |
6201 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6202 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6203 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6204 | if (rc) |
f96637be | 6205 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6206 | |
0d817bc0 | 6207 | cifs_buf_release(pSMB); |
1da177e4 LT |
6208 | if (rc == -EAGAIN) |
6209 | goto setPermsRetry; | |
6210 | return rc; | |
6211 | } | |
6212 | ||
1da177e4 | 6213 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6214 | /* |
6215 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6216 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6217 | * it looks for that attribute name and stuffs that value into the EAData | |
6218 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6219 | * buffer. In both cases, the return value is either the length of the | |
6220 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6221 | * the data isn't copied to it, but the length is returned. | |
6222 | */ | |
1da177e4 | 6223 | ssize_t |
6d5786a3 | 6224 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6225 | const unsigned char *searchName, const unsigned char *ea_name, |
6226 | char *EAData, size_t buf_size, | |
67b4c889 | 6227 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6228 | { |
6229 | /* BB assumes one setup word */ | |
6230 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6231 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
6232 | int remap = cifs_remap(cifs_sb); |
6233 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
6234 | int rc = 0; |
6235 | int bytes_returned; | |
6e462b9f | 6236 | int list_len; |
f0d3868b | 6237 | struct fealist *ea_response_data; |
50c2f753 SF |
6238 | struct fea *temp_fea; |
6239 | char *temp_ptr; | |
0cd126b5 | 6240 | char *end_of_smb; |
f0d3868b | 6241 | __u16 params, byte_count, data_offset; |
5980fc96 | 6242 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6243 | |
f96637be | 6244 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6245 | QAllEAsRetry: |
6246 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6247 | (void **) &pSMBr); | |
6248 | if (rc) | |
6249 | return rc; | |
6250 | ||
6251 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6252 | list_len = |
acbbb76a SF |
6253 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6254 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6255 | list_len++; /* trailing null */ |
6256 | list_len *= 2; | |
340625e6 RS |
6257 | } else { |
6258 | list_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
6259 | } |
6260 | ||
6e462b9f | 6261 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6262 | pSMB->TotalDataCount = 0; |
6263 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6264 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6265 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6266 | pSMB->MaxSetupCount = 0; |
6267 | pSMB->Reserved = 0; | |
6268 | pSMB->Flags = 0; | |
6269 | pSMB->Timeout = 0; | |
6270 | pSMB->Reserved2 = 0; | |
6271 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6272 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6273 | pSMB->DataCount = 0; |
6274 | pSMB->DataOffset = 0; | |
6275 | pSMB->SetupCount = 1; | |
6276 | pSMB->Reserved3 = 0; | |
6277 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6278 | byte_count = params + 1 /* pad */ ; | |
6279 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6280 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6281 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6282 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6283 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6284 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6285 | ||
6286 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6287 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6288 | if (rc) { | |
f96637be | 6289 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6290 | goto QAllEAsOut; |
6291 | } | |
1da177e4 | 6292 | |
f0d3868b JL |
6293 | |
6294 | /* BB also check enough total bytes returned */ | |
6295 | /* BB we need to improve the validity checking | |
6296 | of these trans2 responses */ | |
6297 | ||
6298 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6299 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6300 | rc = -EIO; /* bad smb */ |
6301 | goto QAllEAsOut; | |
6302 | } | |
6303 | ||
6304 | /* check that length of list is not more than bcc */ | |
6305 | /* check that each entry does not go beyond length | |
6306 | of list */ | |
6307 | /* check that each element of each entry does not | |
6308 | go beyond end of list */ | |
6309 | /* validate_trans2_offsets() */ | |
6310 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6311 | ||
6312 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6313 | ea_response_data = (struct fealist *) | |
6314 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6315 | ||
6e462b9f | 6316 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6317 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6318 | if (list_len <= 8) { |
f96637be | 6319 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6320 | /* didn't find the named attribute */ |
6321 | if (ea_name) | |
6322 | rc = -ENODATA; | |
f0d3868b JL |
6323 | goto QAllEAsOut; |
6324 | } | |
6325 | ||
0cd126b5 | 6326 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6327 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6328 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6329 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6330 | rc = -EIO; |
6331 | goto QAllEAsOut; | |
6332 | } | |
6333 | ||
f0d3868b | 6334 | /* account for ea list len */ |
6e462b9f | 6335 | list_len -= 4; |
f0d3868b JL |
6336 | temp_fea = ea_response_data->list; |
6337 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6338 | while (list_len > 0) { |
122ca007 | 6339 | unsigned int name_len; |
f0d3868b | 6340 | __u16 value_len; |
0cd126b5 | 6341 | |
6e462b9f | 6342 | list_len -= 4; |
f0d3868b | 6343 | temp_ptr += 4; |
0cd126b5 JL |
6344 | /* make sure we can read name_len and value_len */ |
6345 | if (list_len < 0) { | |
f96637be | 6346 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6347 | rc = -EIO; |
6348 | goto QAllEAsOut; | |
6349 | } | |
6350 | ||
6351 | name_len = temp_fea->name_len; | |
6352 | value_len = le16_to_cpu(temp_fea->value_len); | |
6353 | list_len -= name_len + 1 + value_len; | |
6354 | if (list_len < 0) { | |
f96637be | 6355 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6356 | rc = -EIO; |
6357 | goto QAllEAsOut; | |
6358 | } | |
6359 | ||
31c0519f | 6360 | if (ea_name) { |
91d065c4 | 6361 | if (ea_name_len == name_len && |
ac423446 | 6362 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6363 | temp_ptr += name_len + 1; |
6364 | rc = value_len; | |
6365 | if (buf_size == 0) | |
6366 | goto QAllEAsOut; | |
6367 | if ((size_t)value_len > buf_size) { | |
6368 | rc = -ERANGE; | |
6369 | goto QAllEAsOut; | |
6370 | } | |
6371 | memcpy(EAData, temp_ptr, value_len); | |
6372 | goto QAllEAsOut; | |
6373 | } | |
f0d3868b | 6374 | } else { |
31c0519f JL |
6375 | /* account for prefix user. and trailing null */ |
6376 | rc += (5 + 1 + name_len); | |
6377 | if (rc < (int) buf_size) { | |
6378 | memcpy(EAData, "user.", 5); | |
6379 | EAData += 5; | |
6380 | memcpy(EAData, temp_ptr, name_len); | |
6381 | EAData += name_len; | |
6382 | /* null terminate name */ | |
6383 | *EAData = 0; | |
6384 | ++EAData; | |
6385 | } else if (buf_size == 0) { | |
6386 | /* skip copy - calc size only */ | |
6387 | } else { | |
6388 | /* stop before overrun buffer */ | |
6389 | rc = -ERANGE; | |
6390 | break; | |
6391 | } | |
1da177e4 | 6392 | } |
0cd126b5 | 6393 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6394 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6395 | } |
f0d3868b | 6396 | |
31c0519f JL |
6397 | /* didn't find the named attribute */ |
6398 | if (ea_name) | |
6399 | rc = -ENODATA; | |
6400 | ||
f0d3868b | 6401 | QAllEAsOut: |
0d817bc0 | 6402 | cifs_buf_release(pSMB); |
1da177e4 LT |
6403 | if (rc == -EAGAIN) |
6404 | goto QAllEAsRetry; | |
6405 | ||
6406 | return (ssize_t)rc; | |
6407 | } | |
6408 | ||
1da177e4 | 6409 | int |
6d5786a3 PS |
6410 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6411 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 6412 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 6413 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6414 | { |
6415 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6416 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6417 | struct fealist *parm_data; | |
6418 | int name_len; | |
6419 | int rc = 0; | |
6420 | int bytes_returned = 0; | |
6421 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 6422 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 6423 | |
f96637be | 6424 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6425 | SetEARetry: |
6426 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6427 | (void **) &pSMBr); | |
6428 | if (rc) | |
6429 | return rc; | |
6430 | ||
6431 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6432 | name_len = | |
acbbb76a SF |
6433 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6434 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6435 | name_len++; /* trailing null */ |
6436 | name_len *= 2; | |
340625e6 RS |
6437 | } else { |
6438 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
6439 | } |
6440 | ||
6441 | params = 6 + name_len; | |
6442 | ||
6443 | /* done calculating parms using name_len of file name, | |
6444 | now use name_len to calculate length of ea name | |
6445 | we are going to create in the inode xattrs */ | |
790fe579 | 6446 | if (ea_name == NULL) |
1da177e4 LT |
6447 | name_len = 0; |
6448 | else | |
50c2f753 | 6449 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6450 | |
dae5dbdb | 6451 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6452 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6453 | /* BB find max SMB PDU from sess */ |
6454 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6455 | pSMB->MaxSetupCount = 0; |
6456 | pSMB->Reserved = 0; | |
6457 | pSMB->Flags = 0; | |
6458 | pSMB->Timeout = 0; | |
6459 | pSMB->Reserved2 = 0; | |
6460 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6461 | InformationLevel) - 4; |
1da177e4 LT |
6462 | offset = param_offset + params; |
6463 | pSMB->InformationLevel = | |
6464 | cpu_to_le16(SMB_SET_FILE_EA); | |
6465 | ||
ade7db99 | 6466 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
6467 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
6468 | pSMB->DataOffset = cpu_to_le16(offset); | |
6469 | pSMB->SetupCount = 1; | |
6470 | pSMB->Reserved3 = 0; | |
6471 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6472 | byte_count = 3 /* pad */ + params + count; | |
6473 | pSMB->DataCount = cpu_to_le16(count); | |
6474 | parm_data->list_len = cpu_to_le32(count); | |
6475 | parm_data->list[0].EA_flags = 0; | |
6476 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6477 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6478 | /* EA names are always ASCII */ |
790fe579 | 6479 | if (ea_name) |
50c2f753 | 6480 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6481 | parm_data->list[0].name[name_len] = 0; |
6482 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6483 | /* caller ensures that ea_value_len is less than 64K but | |
6484 | we need to ensure that it fits within the smb */ | |
6485 | ||
50c2f753 SF |
6486 | /*BB add length check to see if it would fit in |
6487 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6488 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6489 | if (ea_value_len) | |
50c2f753 SF |
6490 | memcpy(parm_data->list[0].name+name_len+1, |
6491 | ea_value, ea_value_len); | |
1da177e4 LT |
6492 | |
6493 | pSMB->TotalDataCount = pSMB->DataCount; | |
6494 | pSMB->ParameterCount = cpu_to_le16(params); | |
6495 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6496 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6497 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6498 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6499 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6500 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6501 | if (rc) |
f96637be | 6502 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6503 | |
6504 | cifs_buf_release(pSMB); | |
6505 | ||
6506 | if (rc == -EAGAIN) | |
6507 | goto SetEARetry; | |
6508 | ||
6509 | return rc; | |
6510 | } | |
1da177e4 | 6511 | #endif |