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929be906 | 1 | /* SPDX-License-Identifier: LGPL-2.1 */ |
1da177e4 | 2 | /* |
1da177e4 | 3 | * |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
7ee1af76 | 6 | * Jeremy Allison (jra@samba.org) |
1da177e4 | 7 | * |
1da177e4 | 8 | */ |
abd2e44d SJ |
9 | #ifndef _CIFS_GLOB_H |
10 | #define _CIFS_GLOB_H | |
11 | ||
1da177e4 LT |
12 | #include <linux/in.h> |
13 | #include <linux/in6.h> | |
b438fcf1 | 14 | #include <linux/inet.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
f7f291e1 PA |
16 | #include <linux/scatterlist.h> |
17 | #include <linux/mm.h> | |
2dc7e1c0 | 18 | #include <linux/mempool.h> |
9b646972 | 19 | #include <linux/workqueue.h> |
49bd49f9 | 20 | #include <linux/utsname.h> |
cc391b69 | 21 | #include <linux/sched/mm.h> |
bc899ee1 | 22 | #include <linux/netfs.h> |
1da177e4 | 23 | #include "cifs_fs_sb.h" |
442aa310 | 24 | #include "cifsacl.h" |
d2b91521 | 25 | #include <crypto/internal/hash.h> |
8c3a2b4c | 26 | #include <uapi/linux/cifs/cifs_mount.h> |
38c8a9a5 | 27 | #include "../common/smb2pdu.h" |
d60622eb | 28 | #include "smb2pdu.h" |
5970e15d | 29 | #include <linux/filelock.h> |
d2b91521 | 30 | |
8d8b26e5 | 31 | #define SMB_PATH_MAX 260 |
e2292430 AA |
32 | #define CIFS_PORT 445 |
33 | #define RFC1001_PORT 139 | |
34 | ||
1da177e4 LT |
35 | /* |
36 | * The sizes of various internal tables and strings | |
37 | */ | |
38 | #define MAX_UID_INFO 16 | |
39 | #define MAX_SES_INFO 2 | |
40 | #define MAX_TCON_INFO 4 | |
41 | ||
cdf1246f | 42 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
43 | |
44 | #define CIFS_MIN_RCV_POOL 4 | |
45 | ||
2c0c2a08 | 46 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
47 | /* |
48 | * default attribute cache timeout (jiffies) | |
49 | */ | |
50 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
51 | ||
52 | /* | |
53 | * max attribute cache timeout (jiffies) - 2^30 | |
54 | */ | |
55 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
56 | ||
ca567eb2 SF |
57 | /* |
58 | * Max persistent and resilient handle timeout (milliseconds). | |
59 | * Windows durable max was 960000 (16 minutes) | |
60 | */ | |
61 | #define SMB3_MAX_HANDLE_TIMEOUT 960000 | |
62 | ||
1da177e4 LT |
63 | /* |
64 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 65 | * on one socket concurrently. |
1da177e4 | 66 | */ |
10b9b98e | 67 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 68 | |
8ecaf67a JL |
69 | #define RFC1001_NAME_LEN 15 |
70 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
71 | ||
b327a717 AA |
72 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
73 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
74 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
75 | ||
adfeb3e0 SF |
76 | /* echo interval in seconds */ |
77 | #define SMB_ECHO_INTERVAL_MIN 1 | |
78 | #define SMB_ECHO_INTERVAL_MAX 600 | |
79 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 80 | |
6e1c1c08 SP |
81 | /* smb multichannel query server interfaces interval in seconds */ |
82 | #define SMB_INTERFACE_POLL_INTERVAL 600 | |
83 | ||
b24df3e3 RS |
84 | /* maximum number of PDUs in one compound */ |
85 | #define MAX_COMPOUND 5 | |
86 | ||
141891f4 SF |
87 | /* |
88 | * Default number of credits to keep available for SMB3. | |
89 | * This value is chosen somewhat arbitrarily. The Windows client | |
90 | * defaults to 128 credits, the Windows server allows clients up to | |
91 | * 512 credits (or 8K for later versions), and the NetApp server | |
92 | * does not limit clients at all. Choose a high enough default value | |
93 | * such that the client shouldn't limit performance, but allow mount | |
94 | * to override (until you approach 64K, where we limit credits to 65000 | |
95 | * to reduce possibility of seeing more server credit overflow bugs. | |
96 | */ | |
97 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
98 | ||
1da177e4 LT |
99 | #include "cifspdu.h" |
100 | ||
1da177e4 LT |
101 | #ifndef XATTR_DOS_ATTRIB |
102 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
103 | #endif | |
104 | ||
49bd49f9 SP |
105 | #define CIFS_MAX_WORKSTATION_LEN (__NEW_UTS_LEN + 1) /* reasonable max for client */ |
106 | ||
6916881f PA |
107 | #define CIFS_DFS_ROOT_SES(ses) ((ses)->dfs_root_ses ?: (ses)) |
108 | ||
1da177e4 LT |
109 | /* |
110 | * CIFS vfs client Status information (based on what we know.) | |
111 | */ | |
112 | ||
dd3cd870 | 113 | /* associated with each connection */ |
1da177e4 LT |
114 | enum statusEnum { |
115 | CifsNew = 0, | |
116 | CifsGood, | |
117 | CifsExiting, | |
fd88ce93 | 118 | CifsNeedReconnect, |
73f9bfbe SP |
119 | CifsNeedNegotiate, |
120 | CifsInNegotiate, | |
dd3cd870 SP |
121 | }; |
122 | ||
123 | /* associated with each smb session */ | |
124 | enum ses_status_enum { | |
125 | SES_NEW = 0, | |
126 | SES_GOOD, | |
127 | SES_EXITING, | |
128 | SES_NEED_RECON, | |
129 | SES_IN_SETUP | |
fdf59eb5 SF |
130 | }; |
131 | ||
132 | /* associated with each tree connection to the server */ | |
133 | enum tid_status_enum { | |
134 | TID_NEW = 0, | |
135 | TID_GOOD, | |
136 | TID_EXITING, | |
137 | TID_NEED_RECON, | |
138 | TID_NEED_TCON, | |
139 | TID_IN_TCON, | |
140 | TID_NEED_FILES_INVALIDATE, /* currently unused */ | |
141 | TID_IN_FILES_INVALIDATE | |
1da177e4 LT |
142 | }; |
143 | ||
144 | enum securityEnum { | |
515d82ff | 145 | Unspecified = 0, /* not specified */ |
1da177e4 | 146 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 147 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 148 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
149 | }; |
150 | ||
5f98ca9a | 151 | struct session_key { |
b609f06a | 152 | unsigned int len; |
21e73393 | 153 | char *response; |
b609f06a SF |
154 | }; |
155 | ||
f7c5445a | 156 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 | 157 | struct cifs_secmech { |
1f3d5477 EM |
158 | struct shash_desc *hmacmd5; /* hmacmd5 hash function, for NTLMv2/CR1 hashes */ |
159 | struct shash_desc *md5; /* md5 hash function, for CIFS/SMB1 signatures */ | |
160 | struct shash_desc *hmacsha256; /* hmac-sha256 hash function, for SMB2 signatures */ | |
161 | struct shash_desc *sha512; /* sha512 hash function, for SMB3.1.1 preauth hash */ | |
162 | struct shash_desc *aes_cmac; /* block-cipher based MAC function, for SMB3 signatures */ | |
163 | ||
164 | struct crypto_aead *enc; /* smb3 encryption AEAD TFM (AES-CCM and AES-GCM) */ | |
165 | struct crypto_aead *dec; /* smb3 decryption AEAD TFM (AES-CCM and AES-GCM) */ | |
d2b91521 SP |
166 | }; |
167 | ||
d3686d54 | 168 | /* per smb session structure/fields */ |
d2b91521 | 169 | struct ntlmssp_auth { |
5c234aa5 | 170 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
171 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
172 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
173 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 174 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
175 | }; |
176 | ||
442aa310 SF |
177 | struct cifs_cred { |
178 | int uid; | |
179 | int gid; | |
180 | int mode; | |
181 | int cecount; | |
182 | struct cifs_sid osid; | |
183 | struct cifs_sid gsid; | |
184 | struct cifs_ntace *ntaces; | |
185 | struct cifs_ace *aces; | |
186 | }; | |
187 | ||
76894f3e | 188 | struct cifs_open_info_data { |
8b4e285d PA |
189 | bool adjust_tz; |
190 | union { | |
191 | bool reparse_point; | |
192 | bool symlink; | |
193 | }; | |
194 | __u32 reparse_tag; | |
76894f3e PA |
195 | char *symlink_target; |
196 | union { | |
197 | struct smb2_file_all_info fi; | |
198 | struct smb311_posix_qinfo posix_fi; | |
199 | }; | |
200 | }; | |
201 | ||
5f71ebc4 PA |
202 | #define cifs_open_data_reparse(d) \ |
203 | ((d)->reparse_point || \ | |
204 | (le32_to_cpu((d)->fi.Attributes) & ATTR_REPARSE)) | |
205 | ||
76894f3e PA |
206 | static inline void cifs_free_open_info(struct cifs_open_info_data *data) |
207 | { | |
208 | kfree(data->symlink_target); | |
209 | } | |
210 | ||
1da177e4 LT |
211 | /* |
212 | ***************************************************************** | |
213 | * Except the CIFS PDUs themselves all the | |
214 | * globally interesting structs should go here | |
215 | ***************************************************************** | |
216 | */ | |
217 | ||
bf5ea0e2 JL |
218 | /* |
219 | * A smb_rqst represents a complete request to be issued to a server. It's | |
220 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
221 | * to start at the beginning of the first page. | |
222 | */ | |
223 | struct smb_rqst { | |
224 | struct kvec *rq_iov; /* array of kvecs */ | |
225 | unsigned int rq_nvec; /* number of kvecs in array */ | |
d08089f6 DH |
226 | size_t rq_iter_size; /* Amount of data in ->rq_iter */ |
227 | struct iov_iter rq_iter; /* Data iterator */ | |
228 | struct xarray rq_buffer; /* Page buffer for encryption */ | |
bf5ea0e2 JL |
229 | }; |
230 | ||
121b046a JL |
231 | struct mid_q_entry; |
232 | struct TCP_Server_Info; | |
55157dfb | 233 | struct cifsFileInfo; |
082d0642 | 234 | struct cifs_ses; |
2e6e02ab | 235 | struct cifs_tcon; |
b669f33c | 236 | struct dfs_info3_param; |
1208ef1f | 237 | struct cifs_fattr; |
3fa1c6d1 | 238 | struct smb3_fs_context; |
fb1214e4 | 239 | struct cifs_fid; |
fc9c5966 | 240 | struct cifs_readdata; |
c9de5c80 | 241 | struct cifs_writedata; |
f9c6e234 | 242 | struct cifs_io_parms; |
92fc65a7 | 243 | struct cifs_search_info; |
95a3f2f3 | 244 | struct cifsInodeInfo; |
226730b4 | 245 | struct cifs_open_parms; |
335b7b62 | 246 | struct cifs_credits; |
121b046a | 247 | |
23db65f5 | 248 | struct smb_version_operations { |
fb2036d8 | 249 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 250 | struct mid_q_entry *); |
55157dfb | 251 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 252 | /* setup request: allocate mid, sign message */ |
fec344e3 | 253 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
f780bd3f AA |
254 | struct TCP_Server_Info *, |
255 | struct smb_rqst *); | |
45740847 | 256 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
257 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
258 | struct smb_rqst *); | |
082d0642 PS |
259 | /* check response: verify signature, map error */ |
260 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
261 | bool); | |
335b7b62 PS |
262 | void (*add_credits)(struct TCP_Server_Info *server, |
263 | const struct cifs_credits *credits, | |
264 | const int optype); | |
45275789 | 265 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
266 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
267 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 268 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
c781af7e PS |
269 | void (*revert_current_mid)(struct TCP_Server_Info *server, |
270 | const unsigned int val); | |
eb378711 PS |
271 | /* data offset from read response message */ |
272 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
273 | /* |
274 | * Data length from read response message | |
275 | * When in_remaining is true, the returned data length is in | |
276 | * message field DataRemaining for out-of-band data read (e.g through | |
277 | * Memory Registration RDMA write in SMBD). | |
278 | * Otherwise, the returned data length is in message field DataLength. | |
279 | */ | |
280 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
281 | /* map smb to linux error */ |
282 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
283 | /* find mid corresponding to the response message */ |
284 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 285 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
286 | void (*clear_stats)(struct cifs_tcon *); |
287 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 288 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 289 | /* verify the message */ |
373512ec | 290 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 291 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
04ad69c3 | 292 | int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *); |
9bd45408 PS |
293 | void (*downgrade_oplock)(struct TCP_Server_Info *server, |
294 | struct cifsInodeInfo *cinode, __u32 oplock, | |
295 | unsigned int epoch, bool *purge_cache); | |
316cf94a PS |
296 | /* process transaction2 response */ |
297 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
298 | char *, int); | |
286170aa PS |
299 | /* check if we need to negotiate */ |
300 | bool (*need_neg)(struct TCP_Server_Info *); | |
301 | /* negotiate to the server */ | |
f486ef8e SP |
302 | int (*negotiate)(const unsigned int xid, |
303 | struct cifs_ses *ses, | |
304 | struct TCP_Server_Info *server); | |
24985c53 | 305 | /* set negotiated write size */ |
3fa1c6d1 | 306 | unsigned int (*negotiate_wsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
24985c53 | 307 | /* set negotiated read size */ |
3fa1c6d1 | 308 | unsigned int (*negotiate_rsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
58c45c58 PS |
309 | /* setup smb sessionn */ |
310 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
f486ef8e | 311 | struct TCP_Server_Info *server, |
58c45c58 PS |
312 | const struct nls_table *); |
313 | /* close smb session */ | |
314 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
315 | /* connect to a server share */ |
316 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
317 | struct cifs_tcon *, const struct nls_table *); | |
318 | /* close tree connecion */ | |
319 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
320 | /* get DFS referrals */ |
321 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
322 | const char *, struct dfs_info3_param **, | |
323 | unsigned int *, const struct nls_table *, int); | |
af4281dc | 324 | /* informational QFS call */ |
0f060936 AG |
325 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *, |
326 | struct cifs_sb_info *); | |
68889f26 PS |
327 | /* check if a path is accessible or not */ |
328 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
329 | struct cifs_sb_info *, const char *); | |
1208ef1f | 330 | /* query path data from the server */ |
8b4e285d PA |
331 | int (*query_path_info)(const unsigned int xid, |
332 | struct cifs_tcon *tcon, | |
333 | struct cifs_sb_info *cifs_sb, | |
334 | const char *full_path, | |
335 | struct cifs_open_info_data *data); | |
4ad65044 | 336 | /* query file data from the server */ |
76894f3e PA |
337 | int (*query_file_info)(const unsigned int xid, struct cifs_tcon *tcon, |
338 | struct cifsFileInfo *cfile, struct cifs_open_info_data *data); | |
9a49e221 PA |
339 | /* query reparse point to determine which type of special file */ |
340 | int (*query_reparse_point)(const unsigned int xid, | |
341 | struct cifs_tcon *tcon, | |
342 | struct cifs_sb_info *cifs_sb, | |
343 | const char *full_path, | |
344 | u32 *tag, struct kvec *rsp, | |
345 | int *rsp_buftype); | |
1208ef1f | 346 | /* get server index number */ |
76894f3e PA |
347 | int (*get_srv_inum)(const unsigned int xid, struct cifs_tcon *tcon, |
348 | struct cifs_sb_info *cifs_sb, const char *full_path, u64 *uniqueid, | |
349 | struct cifs_open_info_data *data); | |
d1433418 PS |
350 | /* set size by path */ |
351 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
352 | const char *, __u64, struct cifs_sb_info *, bool); | |
353 | /* set size by file handle */ | |
354 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
355 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
356 | /* set attributes */ |
357 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
358 | const unsigned int); | |
64a5cfa6 SF |
359 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
360 | struct cifsFileInfo *); | |
f6d76178 PS |
361 | /* check if we can send an echo or nor */ |
362 | bool (*can_echo)(struct TCP_Server_Info *); | |
363 | /* send echo request */ | |
364 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 365 | /* create directory */ |
bea851b8 SF |
366 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
367 | umode_t mode, struct cifs_tcon *tcon, | |
368 | const char *full_path, | |
369 | struct cifs_sb_info *cifs_sb); | |
c3ca78e2 SF |
370 | int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode, |
371 | struct cifs_tcon *tcon, const char *name, | |
372 | struct cifs_sb_info *sb); | |
f436720e PS |
373 | /* set info on created directory */ |
374 | void (*mkdir_setinfo)(struct inode *, const char *, | |
375 | struct cifs_sb_info *, struct cifs_tcon *, | |
376 | const unsigned int); | |
f958ca5d PS |
377 | /* remove directory */ |
378 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
379 | struct cifs_sb_info *); | |
ed6875e0 PS |
380 | /* unlink file */ |
381 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
382 | struct cifs_sb_info *); | |
383 | /* open, rename and delete file */ | |
384 | int (*rename_pending_delete)(const char *, struct dentry *, | |
385 | const unsigned int); | |
8ceb9843 PS |
386 | /* send rename request */ |
387 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
388 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
389 | /* send create hardlink request */ |
390 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
391 | const char *, const char *, | |
392 | struct cifs_sb_info *); | |
b42bf888 | 393 | /* query symlink target */ |
9a49e221 PA |
394 | int (*query_symlink)(const unsigned int xid, |
395 | struct cifs_tcon *tcon, | |
396 | struct cifs_sb_info *cifs_sb, | |
397 | const char *full_path, | |
398 | char **target_path, | |
399 | struct kvec *rsp_iov); | |
fb1214e4 | 400 | /* open a file for non-posix mounts */ |
76894f3e PA |
401 | int (*open)(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, |
402 | void *buf); | |
fb1214e4 PS |
403 | /* set fid protocol-specific info */ |
404 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 405 | /* close a file */ |
760ad0ca PS |
406 | void (*close)(const unsigned int, struct cifs_tcon *, |
407 | struct cifs_fid *); | |
43f8a6a7 SF |
408 | /* close a file, returning file attributes and timestamps */ |
409 | void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon, | |
410 | struct cifsFileInfo *pfile_info); | |
1d8c4c00 PS |
411 | /* send a flush request to the server */ |
412 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
413 | /* async read from the server */ |
414 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 415 | /* async write to the server */ |
4a5c80d7 SF |
416 | int (*async_writev)(struct cifs_writedata *, |
417 | void (*release)(struct kref *)); | |
f9c6e234 | 418 | /* sync read from the server */ |
db8b631d | 419 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
420 | struct cifs_io_parms *, unsigned int *, char **, |
421 | int *); | |
ba9ad725 | 422 | /* sync write to the server */ |
db8b631d | 423 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
424 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
425 | unsigned long); | |
92fc65a7 PS |
426 | /* open dir, start readdir */ |
427 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
428 | const char *, struct cifs_sb_info *, | |
429 | struct cifs_fid *, __u16, | |
430 | struct cifs_search_info *); | |
431 | /* continue readdir */ | |
432 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
433 | struct cifs_fid *, | |
434 | __u16, struct cifs_search_info *srch_inf); | |
435 | /* close dir */ | |
436 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
437 | struct cifs_fid *); | |
438 | /* calculate a size of SMB message */ | |
68ed1449 | 439 | unsigned int (*calc_smb_size)(void *buf); |
66265f13 PS |
440 | /* check for STATUS_PENDING and process the response if yes */ |
441 | bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); | |
511c54a2 PS |
442 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
443 | bool (*is_session_expired)(char *); | |
95a3f2f3 | 444 | /* send oplock break response */ |
59a556ae BS |
445 | int (*oplock_response)(struct cifs_tcon *tcon, __u64 persistent_fid, __u64 volatile_fid, |
446 | __u16 net_fid, struct cifsInodeInfo *cifs_inode); | |
76ec5e33 PS |
447 | /* query remote filesystem */ |
448 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
0f060936 | 449 | struct cifs_sb_info *, struct kstatfs *); |
d39a4f71 PS |
450 | /* send mandatory brlock to the server */ |
451 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
452 | __u64, __u32, int, int, bool); | |
453 | /* unlock range of mandatory locks */ | |
454 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
455 | const unsigned int); | |
456 | /* push brlocks from the cache to the server */ | |
457 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 458 | /* get lease key of the inode */ |
a41a28bd | 459 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 460 | /* set lease key of the inode */ |
a41a28bd | 461 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 462 | /* generate new lease key */ |
a41a28bd | 463 | void (*new_lease_key)(struct cifs_fid *); |
f486ef8e SP |
464 | int (*generate_signingkey)(struct cifs_ses *ses, |
465 | struct TCP_Server_Info *server); | |
eda1c54f LL |
466 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *, |
467 | bool allocate_crypto); | |
b3152e2c SF |
468 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
469 | struct cifsFileInfo *src_file); | |
834170c8 SF |
470 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
471 | struct cifsFileInfo *src_file, void __user *); | |
d26c2ddd | 472 | int (*notify)(const unsigned int xid, struct file *pfile, |
e3e94634 | 473 | void __user *pbuf, bool return_changes); |
b5be1a1c SP |
474 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
475 | struct cifs_sb_info *, const unsigned char *, | |
476 | char *, unsigned int *); | |
cbb0aba6 SP |
477 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
478 | struct cifs_sb_info *, const unsigned char *, | |
479 | char *, unsigned int *); | |
53ef1016 PS |
480 | /* if we can do cache read operations */ |
481 | bool (*is_read_op)(__u32); | |
482 | /* set oplock level for the inode */ | |
42873b0a PS |
483 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
484 | bool *); | |
a41a28bd | 485 | /* create lease context buffer for CREATE request */ |
729c0c9d | 486 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 487 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 488 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 489 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 490 | struct cifsFileInfo *src_file, |
620d8745 SP |
491 | struct cifsFileInfo *target_file, |
492 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
493 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
494 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
495 | u64 dest_off); | |
ff1c038a | 496 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
497 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
498 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 499 | size_t, struct cifs_sb_info *); |
666753c3 SF |
500 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
501 | const char *, const void *, const __u16, | |
5517554e | 502 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 | 503 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
3970acf7 | 504 | const char *, u32 *, u32); |
42eacf9e | 505 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
3970acf7 | 506 | const struct cifs_fid *, u32 *, u32); |
83e3bc23 SF |
507 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
508 | int); | |
7f6c5008 PS |
509 | /* writepages retry size */ |
510 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
511 | /* get mtu credits */ |
512 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
335b7b62 | 513 | unsigned int *, struct cifs_credits *); |
9a1c67e8 PS |
514 | /* adjust previously taken mtu credits to request size */ |
515 | int (*adjust_credits)(struct TCP_Server_Info *server, | |
516 | struct cifs_credits *credits, | |
517 | const unsigned int payload_size); | |
52755808 PS |
518 | /* check if we need to issue closedir */ |
519 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
520 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
521 | loff_t); | |
7fb8986e | 522 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
523 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
524 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
525 | int (*is_transform_hdr)(void *buf); |
526 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 527 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
528 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
529 | enum securityEnum); | |
8ce79ec3 | 530 | int (*next_header)(char *); |
f5b05d62 RS |
531 | /* ioctl passthrough for query_info */ |
532 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 | 533 | struct cifs_tcon *tcon, |
0f060936 | 534 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 535 | __le16 *path, int is_dir, |
f5b05d62 | 536 | unsigned long p); |
c847dccf AA |
537 | /* make unix special files (block, char, fifo, socket) */ |
538 | int (*make_node)(unsigned int xid, | |
539 | struct inode *inode, | |
540 | struct dentry *dentry, | |
541 | struct cifs_tcon *tcon, | |
55869139 | 542 | const char *full_path, |
c847dccf AA |
543 | umode_t mode, |
544 | dev_t device_number); | |
2f3ebaba RS |
545 | /* version specific fiemap implementation */ |
546 | int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *, | |
547 | struct fiemap_extent_info *, u64, u64); | |
dece44e3 RS |
548 | /* version specific llseek implementation */ |
549 | loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int); | |
8e670f77 RS |
550 | /* Check for STATUS_IO_TIMEOUT */ |
551 | bool (*is_status_io_timeout)(char *buf); | |
9e550b08 | 552 | /* Check for STATUS_NETWORK_NAME_DELETED */ |
c071b34f | 553 | bool (*is_network_name_deleted)(char *buf, struct TCP_Server_Info *srv); |
23db65f5 JL |
554 | }; |
555 | ||
556 | struct smb_version_values { | |
557 | char *version_string; | |
e4aa25e7 SF |
558 | __u16 protocol_id; |
559 | __u32 req_capabilities; | |
106dc538 PS |
560 | __u32 large_lock_type; |
561 | __u32 exclusive_lock_type; | |
562 | __u32 shared_lock_type; | |
563 | __u32 unlock_lock_type; | |
93012bf9 | 564 | size_t header_preamble_size; |
1887f601 PS |
565 | size_t header_size; |
566 | size_t max_header_size; | |
eb378711 | 567 | size_t read_rsp_size; |
2dc7e1c0 | 568 | __le16 lock_cmd; |
29e20f9c PS |
569 | unsigned int cap_unix; |
570 | unsigned int cap_nt_find; | |
571 | unsigned int cap_large_files; | |
50285882 JL |
572 | __u16 signing_enabled; |
573 | __u16 signing_required; | |
a41a28bd | 574 | size_t create_lease_size; |
23db65f5 JL |
575 | }; |
576 | ||
1887f601 PS |
577 | #define HEADER_SIZE(server) (server->vals->header_size) |
578 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
9789de8b | 579 | #define HEADER_PREAMBLE_SIZE(server) (server->vals->header_preamble_size) |
b6b3624d | 580 | #define MID_HEADER_SIZE(server) (HEADER_SIZE(server) - 1 - HEADER_PREAMBLE_SIZE(server)) |
1887f601 | 581 | |
d070f9dd AA |
582 | /** |
583 | * CIFS superblock mount flags (mnt_cifs_flags) to consider when | |
584 | * trying to reuse existing superblock for a new mount | |
585 | */ | |
25c7f41e PS |
586 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
587 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
588 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 589 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
590 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
591 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
592 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
593 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
594 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 | 595 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
d070f9dd | 596 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ |
6552d6a0 | 597 | CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ |
83bbfa70 | 598 | CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ |
41e033fe | 599 | CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) |
25c7f41e | 600 | |
d070f9dd AA |
601 | /** |
602 | * Generic VFS superblock mount flags (s_flags) to consider when | |
603 | * trying to reuse existing superblock for a new mount | |
604 | */ | |
1751e8a6 LT |
605 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
606 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
607 | |
608 | struct cifs_mnt_data { | |
609 | struct cifs_sb_info *cifs_sb; | |
3fa1c6d1 | 610 | struct smb3_fs_context *ctx; |
25c7f41e PS |
611 | int flags; |
612 | }; | |
613 | ||
792af7b0 PS |
614 | static inline unsigned int |
615 | get_rfc1002_length(void *buf) | |
616 | { | |
dca1c8d1 | 617 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
618 | } |
619 | ||
ec2e4523 PS |
620 | static inline void |
621 | inc_rfc1001_len(void *buf, int count) | |
622 | { | |
623 | be32_add_cpu((__be32 *)buf, count); | |
624 | } | |
625 | ||
1da177e4 | 626 | struct TCP_Server_Info { |
3b795210 SF |
627 | struct list_head tcp_ses_list; |
628 | struct list_head smb_ses_list; | |
d7d7a66a | 629 | spinlock_t srv_lock; /* protect anything here that is not protected */ |
6d82c27a | 630 | __u64 conn_id; /* connection identifier (useful for debugging) */ |
e7ddee90 | 631 | int srv_count; /* reference counter */ |
a10faeb2 | 632 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 633 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
634 | struct smb_version_operations *ops; |
635 | struct smb_version_values *vals; | |
080dc5e5 | 636 | /* updates to tcpStatus protected by cifs_tcp_ses_lock */ |
c3dccf48 | 637 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 638 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 639 | struct socket *ssocket; |
a9f1b85e | 640 | struct sockaddr_storage dstaddr; |
3eb9a889 | 641 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
642 | #ifdef CONFIG_NET_NS |
643 | struct net *net; | |
644 | #endif | |
d38d8c74 | 645 | wait_queue_head_t response_q; |
1da177e4 | 646 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
d7d7a66a | 647 | spinlock_t mid_lock; /* protect mid queue and it's entries */ |
1da177e4 | 648 | struct list_head pending_mid_q; |
edf1ae40 SF |
649 | bool noblocksnd; /* use blocking sendmsg */ |
650 | bool noautotune; /* do not autotune send buf sizes */ | |
c9f1c19c | 651 | bool nosharesock; |
6a5fa236 | 652 | bool tcp_nodelay; |
ee1d2179 | 653 | bool terminate; |
141891f4 SF |
654 | unsigned int credits; /* send no more requests at once */ |
655 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 656 | unsigned int in_flight; /* number of requests on the wire to server */ |
1b63f184 | 657 | unsigned int max_in_flight; /* max number of requests that were on wire */ |
2d86dbc9 | 658 | spinlock_t req_lock; /* protect the two values above */ |
cc391b69 VW |
659 | struct mutex _srv_mutex; |
660 | unsigned int nofs_flag; | |
1da177e4 LT |
661 | struct task_struct *tsk; |
662 | char server_GUID[16]; | |
286170aa | 663 | __u16 sec_mode; |
38d77c50 | 664 | bool sign; /* is signing enabled on this connection? */ |
4f5c10f1 | 665 | bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */ |
c3dccf48 | 666 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
667 | int echo_credits; /* echo reserved slots */ |
668 | int oplock_credits; /* oplock break reserved slots */ | |
669 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 670 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 671 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 672 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
673 | unsigned int maxReq; /* Clients should submit no more */ |
674 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 675 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
676 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
677 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
678 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
679 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 680 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
681 | /* message size the server can send or receive for */ |
682 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 683 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 684 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
0fa757b5 | 685 | __u64 CurrentMid; /* multiplex id - rotating counter, protected by GlobalMid_Lock */ |
d3ba50b1 | 686 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 687 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 688 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 689 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 690 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 691 | struct session_key session_key; |
3a5ff61c | 692 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 693 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
694 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ |
695 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
696 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 697 | /* extended security flavors that server supports */ |
c3dccf48 JL |
698 | bool sec_ntlmssp; /* supports NTLMSSP */ |
699 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
700 | bool sec_kerberos; /* supports plain Kerberos */ |
701 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 702 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
703 | /* use SMBD connection instead of socket */ |
704 | bool rdma; | |
705 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
706 | struct smbd_connection *smbd_conn; | |
c74093b6 | 707 | struct delayed_work echo; /* echo ping workqueue job */ |
2a37ef94 JL |
708 | char *smallbuf; /* pointer to current "small" buffer */ |
709 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
710 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
711 | unsigned int pdu_size; | |
2a37ef94 | 712 | unsigned int total_read; /* total amount of data read in this pass */ |
1ae9a5a5 SF |
713 | atomic_t in_send; /* requests trying to send */ |
714 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
c3dccf48 | 715 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 | 716 | atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */ |
468d6779 | 717 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
433b8dd7 SF |
718 | __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */ |
719 | __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
720 | __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
468d6779 | 721 | #endif /* STATS2 */ |
ec2e4523 PS |
722 | unsigned int max_read; |
723 | unsigned int max_write; | |
563317ec | 724 | unsigned int min_offload; |
26ea888f | 725 | __le16 compress_algorithm; |
53d31a3f | 726 | __u16 signing_algorithm; |
5100d8a3 | 727 | __le16 cipher_type; |
8bd68c6e AA |
728 | /* save initital negprot hash */ |
729 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
53d31a3f | 730 | bool signing_negotiated; /* true if valid signing context rcvd from server */ |
fcef0db6 | 731 | bool posix_ext_supported; |
53e0e11e PS |
732 | struct delayed_work reconnect; /* reconnect workqueue job */ |
733 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 734 | unsigned long echo_interval; |
93d5cb51 PA |
735 | |
736 | /* | |
737 | * Number of targets available for reconnect. The more targets | |
738 | * the more tasks have to wait to let the demultiplex thread | |
739 | * reconnect. | |
740 | */ | |
741 | int nr_targets; | |
8eecd1c2 | 742 | bool noblockcnt; /* use non-blocking connect() */ |
0f2b305a SP |
743 | |
744 | /* | |
745 | * If this is a session channel, | |
746 | * primary_server holds the ref-counted | |
747 | * pointer to primary channel connection for the session. | |
748 | */ | |
b3773b19 | 749 | #define SERVER_IS_CHAN(server) (!!(server)->primary_server) |
0f2b305a | 750 | struct TCP_Server_Info *primary_server; |
09ee7a3b | 751 | __u16 channel_sequence_num; /* incremented on primary channel on each chan reconnect */ |
0f2b305a | 752 | |
121d947d SC |
753 | #ifdef CONFIG_CIFS_SWN_UPCALL |
754 | bool use_swn_dstaddr; | |
755 | struct sockaddr_storage swn_dstaddr; | |
756 | #endif | |
c88f7dcd PA |
757 | struct mutex refpath_lock; /* protects leaf_fullpath */ |
758 | /* | |
3dc9c433 PA |
759 | * leaf_fullpath: Canonical DFS referral path related to this |
760 | * connection. | |
761 | * It is used in DFS cache refresher, reconnect and may | |
762 | * change due to nested DFS links. | |
c88f7dcd | 763 | * |
3ae872de PA |
764 | * Protected by @refpath_lock and @srv_lock. The @refpath_lock is |
765 | * mostly used for not requiring a copy of @leaf_fullpath when getting | |
3dc9c433 PA |
766 | * cached or new DFS referrals (which might also sleep during I/O). |
767 | * While @srv_lock is held for making string and NULL comparions against | |
768 | * both fields as in mount(2) and cache refresh. | |
c88f7dcd | 769 | * |
3dc9c433 | 770 | * format: \\HOST\SHARE[\OPTIONAL PATH] |
c88f7dcd | 771 | */ |
3ae872de | 772 | char *leaf_fullpath; |
1da177e4 LT |
773 | }; |
774 | ||
d291e703 ZX |
775 | static inline bool is_smb1(struct TCP_Server_Info *server) |
776 | { | |
777 | return HEADER_PREAMBLE_SIZE(server) != 0; | |
778 | } | |
779 | ||
cc391b69 VW |
780 | static inline void cifs_server_lock(struct TCP_Server_Info *server) |
781 | { | |
782 | unsigned int nofs_flag = memalloc_nofs_save(); | |
783 | ||
784 | mutex_lock(&server->_srv_mutex); | |
785 | server->nofs_flag = nofs_flag; | |
786 | } | |
787 | ||
788 | static inline void cifs_server_unlock(struct TCP_Server_Info *server) | |
789 | { | |
790 | unsigned int nofs_flag = server->nofs_flag; | |
791 | ||
792 | mutex_unlock(&server->_srv_mutex); | |
793 | memalloc_nofs_restore(nofs_flag); | |
794 | } | |
795 | ||
335b7b62 PS |
796 | struct cifs_credits { |
797 | unsigned int value; | |
798 | unsigned int instance; | |
799 | }; | |
800 | ||
fc40f9cf PS |
801 | static inline unsigned int |
802 | in_flight(struct TCP_Server_Info *server) | |
803 | { | |
804 | unsigned int num; | |
c19204cb | 805 | |
fc40f9cf PS |
806 | spin_lock(&server->req_lock); |
807 | num = server->in_flight; | |
808 | spin_unlock(&server->req_lock); | |
809 | return num; | |
810 | } | |
811 | ||
2d86dbc9 | 812 | static inline bool |
b227d215 | 813 | has_credits(struct TCP_Server_Info *server, int *credits, int num_credits) |
fc40f9cf | 814 | { |
2d86dbc9 | 815 | int num; |
c19204cb | 816 | |
fc40f9cf | 817 | spin_lock(&server->req_lock); |
bc205ed1 | 818 | num = *credits; |
fc40f9cf | 819 | spin_unlock(&server->req_lock); |
b227d215 | 820 | return num >= num_credits; |
fc40f9cf PS |
821 | } |
822 | ||
45275789 | 823 | static inline void |
34f4deb7 | 824 | add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, |
a891f0f8 | 825 | const int optype) |
45275789 | 826 | { |
34f4deb7 | 827 | server->ops->add_credits(server, credits, optype); |
45275789 PS |
828 | } |
829 | ||
cb7e9eab | 830 | static inline void |
335b7b62 PS |
831 | add_credits_and_wake_if(struct TCP_Server_Info *server, |
832 | const struct cifs_credits *credits, const int optype) | |
cb7e9eab | 833 | { |
335b7b62 PS |
834 | if (credits->value) { |
835 | server->ops->add_credits(server, credits, optype); | |
cb7e9eab PS |
836 | wake_up(&server->request_q); |
837 | } | |
838 | } | |
839 | ||
45275789 PS |
840 | static inline void |
841 | set_credits(struct TCP_Server_Info *server, const int val) | |
842 | { | |
843 | server->ops->set_credits(server, val); | |
844 | } | |
845 | ||
9a1c67e8 PS |
846 | static inline int |
847 | adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, | |
848 | const unsigned int payload_size) | |
849 | { | |
850 | return server->ops->adjust_credits ? | |
851 | server->ops->adjust_credits(server, credits, payload_size) : 0; | |
852 | } | |
853 | ||
9235d098 | 854 | static inline __le64 |
3d378d3f | 855 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 856 | { |
9235d098 | 857 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
858 | } |
859 | ||
3d378d3f TG |
860 | static inline __le16 |
861 | get_next_mid(struct TCP_Server_Info *server) | |
862 | { | |
9235d098 | 863 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
864 | /* |
865 | * The value in the SMB header should be little endian for easy | |
866 | * on-the-wire decoding. | |
867 | */ | |
868 | return cpu_to_le16(mid); | |
869 | } | |
870 | ||
c781af7e PS |
871 | static inline void |
872 | revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
873 | { | |
874 | if (server->ops->revert_current_mid) | |
875 | server->ops->revert_current_mid(server, val); | |
876 | } | |
877 | ||
878 | static inline void | |
879 | revert_current_mid_from_hdr(struct TCP_Server_Info *server, | |
0d35e382 | 880 | const struct smb2_hdr *shdr) |
c781af7e PS |
881 | { |
882 | unsigned int num = le16_to_cpu(shdr->CreditCharge); | |
883 | ||
884 | return revert_current_mid(server, num > 0 ? num : 1); | |
885 | } | |
886 | ||
3d378d3f TG |
887 | static inline __u16 |
888 | get_mid(const struct smb_hdr *smb) | |
889 | { | |
890 | return le16_to_cpu(smb->Mid); | |
891 | } | |
892 | ||
893 | static inline bool | |
894 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
895 | { | |
896 | return mid == le16_to_cpu(smb->Mid); | |
897 | } | |
898 | ||
24985c53 PS |
899 | /* |
900 | * When the server supports very large reads and writes via POSIX extensions, | |
901 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
902 | * including the RFC1001 length. | |
903 | * | |
904 | * Note that this might make for "interesting" allocation problems during | |
905 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 906 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
907 | * |
908 | * For reads, there is a similar problem as we need to allocate an array | |
909 | * of kvecs to handle the receive, though that should only need to be done | |
910 | * once. | |
911 | */ | |
912 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
913 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
914 | ||
915 | /* | |
916 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
917 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
918 | * write up to the maximum size described by RFC1002. | |
919 | */ | |
920 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
921 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
922 | ||
24985c53 PS |
923 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) |
924 | ||
925 | /* | |
926 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
927 | * those values when posix extensions aren't in force. In actuality here, we | |
928 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
929 | * to be ok with the extra byte even though Windows doesn't send writes that | |
930 | * are that large. | |
931 | * | |
932 | * Citation: | |
933 | * | |
cba22b1c | 934 | * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx |
24985c53 PS |
935 | */ |
936 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
937 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
938 | ||
f1d0c998 RL |
939 | /* |
940 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
941 | * when CONFIG_NET_NS isn't set. | |
942 | */ | |
943 | ||
944 | #ifdef CONFIG_NET_NS | |
945 | ||
946 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
947 | { | |
948 | return srv->net; | |
949 | } | |
950 | ||
951 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
952 | { | |
953 | srv->net = net; | |
954 | } | |
955 | ||
956 | #else | |
957 | ||
958 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
959 | { | |
960 | return &init_net; | |
961 | } | |
962 | ||
963 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
964 | { | |
965 | } | |
966 | ||
967 | #endif | |
968 | ||
b6f0dd5d | 969 | struct cifs_server_iface { |
aa45dadd SP |
970 | struct list_head iface_head; |
971 | struct kref refcount; | |
b6f0dd5d | 972 | size_t speed; |
a6d8fb54 SP |
973 | size_t weight_fulfilled; |
974 | unsigned int num_channels; | |
b6f0dd5d AA |
975 | unsigned int rdma_capable : 1; |
976 | unsigned int rss_capable : 1; | |
aa45dadd | 977 | unsigned int is_active : 1; /* unset if non existent */ |
b6f0dd5d AA |
978 | struct sockaddr_storage sockaddr; |
979 | }; | |
980 | ||
aa45dadd SP |
981 | /* release iface when last ref is dropped */ |
982 | static inline void | |
983 | release_iface(struct kref *ref) | |
984 | { | |
985 | struct cifs_server_iface *iface = container_of(ref, | |
986 | struct cifs_server_iface, | |
987 | refcount); | |
988 | list_del_init(&iface->iface_head); | |
989 | kfree(iface); | |
990 | } | |
991 | ||
bcc88801 | 992 | struct cifs_chan { |
5752bf64 | 993 | unsigned int in_reconnect : 1; /* if session setup in progress for this channel */ |
bcc88801 | 994 | struct TCP_Server_Info *server; |
aa45dadd | 995 | struct cifs_server_iface *iface; /* interface in use */ |
bcc88801 AA |
996 | __u8 signkey[SMB3_SIGN_KEY_SIZE]; |
997 | }; | |
998 | ||
1da177e4 LT |
999 | /* |
1000 | * Session structure. One of these for each uid session with a particular host | |
1001 | */ | |
96daf2b0 | 1002 | struct cifs_ses { |
14fbf50d | 1003 | struct list_head smb_ses_list; |
3663c904 | 1004 | struct list_head rlist; /* reconnect list */ |
3b795210 | 1005 | struct list_head tcon_list; |
b327a717 | 1006 | struct cifs_tcon *tcon_ipc; |
d7d7a66a | 1007 | spinlock_t ses_lock; /* protect anything here that is not protected */ |
d7b619cf | 1008 | struct mutex session_mutex; |
1da177e4 | 1009 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 1010 | int ses_count; /* reference counter */ |
dd3cd870 | 1011 | enum ses_status_enum ses_status; /* updates protected by cifs_tcp_ses_lock */ |
c19204cb | 1012 | unsigned int overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
1013 | char *serverOS; /* name of operating system underlying server */ |
1014 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 1015 | char *serverDomain; /* security realm of server */ |
286170aa | 1016 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
1017 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
1018 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 1019 | unsigned int capabilities; |
b438fcf1 | 1020 | char ip_addr[INET6_ADDRSTRLEN + 1]; /* Max ipv6 (or v4) addr string len */ |
34c87901 SF |
1021 | char *user_name; /* must not be null except during init of sess |
1022 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
1023 | char *domainName; |
1024 | char *password; | |
de3a9e94 | 1025 | char workstation_name[CIFS_MAX_WORKSTATION_LEN]; |
5d0d2882 | 1026 | struct session_key auth_key; |
d3686d54 | 1027 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
1028 | enum securityEnum sectype; /* what security flavor was specified? */ |
1029 | bool sign; /* is signing required? */ | |
39566443 | 1030 | bool domainAuto:1; |
5478f9ba | 1031 | __u16 session_flags; |
373512ec | 1032 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
45a4546c SP |
1033 | __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE]; |
1034 | __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE]; | |
8bd68c6e | 1035 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d AA |
1036 | |
1037 | /* | |
1038 | * Network interfaces available on the server this session is | |
1039 | * connected to. | |
1040 | * | |
1041 | * Other channels can be opened by connecting and binding this | |
1042 | * session to interfaces from this list. | |
1043 | * | |
1044 | * iface_lock should be taken when accessing any of these fields | |
1045 | */ | |
1046 | spinlock_t iface_lock; | |
724244cd | 1047 | /* ========= begin: protected by iface_lock ======== */ |
aa45dadd | 1048 | struct list_head iface_list; |
b6f0dd5d AA |
1049 | size_t iface_count; |
1050 | unsigned long iface_last_update; /* jiffies */ | |
724244cd | 1051 | /* ========= end: protected by iface_lock ======== */ |
bcc88801 | 1052 | |
724244cd SP |
1053 | spinlock_t chan_lock; |
1054 | /* ========= begin: protected by chan_lock ======== */ | |
bcc88801 | 1055 | #define CIFS_MAX_CHANNELS 16 |
0c51cc6f | 1056 | #define CIFS_INVAL_CHAN_INDEX (-1) |
d1a931ce SP |
1057 | #define CIFS_ALL_CHANNELS_SET(ses) \ |
1058 | ((1UL << (ses)->chan_count) - 1) | |
5752bf64 SP |
1059 | #define CIFS_ALL_CHANS_GOOD(ses) \ |
1060 | (!(ses)->chans_need_reconnect) | |
d1a931ce SP |
1061 | #define CIFS_ALL_CHANS_NEED_RECONNECT(ses) \ |
1062 | ((ses)->chans_need_reconnect == CIFS_ALL_CHANNELS_SET(ses)) | |
183eea2e SP |
1063 | #define CIFS_SET_ALL_CHANS_NEED_RECONNECT(ses) \ |
1064 | ((ses)->chans_need_reconnect = CIFS_ALL_CHANNELS_SET(ses)) | |
d1a931ce SP |
1065 | #define CIFS_CHAN_NEEDS_RECONNECT(ses, index) \ |
1066 | test_bit((index), &(ses)->chans_need_reconnect) | |
5752bf64 SP |
1067 | #define CIFS_CHAN_IN_RECONNECT(ses, index) \ |
1068 | ((ses)->chans[(index)].in_reconnect) | |
d1a931ce | 1069 | |
bcc88801 AA |
1070 | struct cifs_chan chans[CIFS_MAX_CHANNELS]; |
1071 | size_t chan_count; | |
1072 | size_t chan_max; | |
1073 | atomic_t chan_seq; /* round robin state */ | |
d1a931ce SP |
1074 | |
1075 | /* | |
1076 | * chans_need_reconnect is a bitmap indicating which of the channels | |
1077 | * under this smb session needs to be reconnected. | |
1078 | * If not multichannel session, only one bit will be used. | |
f486ef8e SP |
1079 | * |
1080 | * We will ask for sess and tcon reconnection only if all the | |
1081 | * channels are marked for needing reconnection. This will | |
1082 | * enable the sessions on top to continue to live till any | |
1083 | * of the channels below are active. | |
d1a931ce SP |
1084 | */ |
1085 | unsigned long chans_need_reconnect; | |
724244cd | 1086 | /* ========= end: protected by chan_lock ======== */ |
6916881f | 1087 | struct cifs_ses *dfs_root_ses; |
a43f95fd | 1088 | struct nls_table *local_nls; |
1da177e4 | 1089 | }; |
233839b1 | 1090 | |
29e20f9c PS |
1091 | static inline bool |
1092 | cap_unix(struct cifs_ses *ses) | |
1093 | { | |
1094 | return ses->server->vals->cap_unix & ses->capabilities; | |
1095 | } | |
1096 | ||
f695b289 RS |
1097 | /* |
1098 | * common struct for holding inode info when searching for or updating an | |
1099 | * inode with new info | |
1100 | */ | |
1101 | ||
a18280e7 | 1102 | #define CIFS_FATTR_JUNCTION 0x1 |
f695b289 RS |
1103 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1104 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
1105 | #define CIFS_FATTR_INO_COLLISION 0x8 | |
1106 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 | |
1107 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 | |
1108 | ||
1109 | struct cifs_fattr { | |
1110 | u32 cf_flags; | |
1111 | u32 cf_cifsattrs; | |
1112 | u64 cf_uniqueid; | |
1113 | u64 cf_eof; | |
1114 | u64 cf_bytes; | |
1115 | u64 cf_createtime; | |
1116 | kuid_t cf_uid; | |
1117 | kgid_t cf_gid; | |
1118 | umode_t cf_mode; | |
1119 | dev_t cf_rdev; | |
1120 | unsigned int cf_nlink; | |
1121 | unsigned int cf_dtype; | |
1122 | struct timespec64 cf_atime; | |
1123 | struct timespec64 cf_mtime; | |
1124 | struct timespec64 cf_ctime; | |
1125 | u32 cf_cifstag; | |
76894f3e | 1126 | char *cf_symlink_target; |
f695b289 RS |
1127 | }; |
1128 | ||
1da177e4 LT |
1129 | /* |
1130 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 1131 | * session |
1da177e4 | 1132 | */ |
96daf2b0 | 1133 | struct cifs_tcon { |
f1987b44 JL |
1134 | struct list_head tcon_list; |
1135 | int tc_count; | |
53e0e11e | 1136 | struct list_head rlist; /* reconnect list */ |
d7d7a66a | 1137 | spinlock_t tc_lock; /* protect anything here that is not protected */ |
fae8044c SF |
1138 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
1139 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 1140 | struct list_head openFileList; |
3afca265 | 1141 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 1142 | struct cifs_ses *ses; /* pointer to session associated with */ |
68e14569 | 1143 | char tree_name[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 1144 | char *nativeFileSystem; |
00e485b0 | 1145 | char *password; /* for share-level security */ |
faaf946a | 1146 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 | 1147 | __u16 Flags; /* optional support bits */ |
fdf59eb5 | 1148 | enum tid_status_enum status; |
1da177e4 | 1149 | atomic_t num_smbs_sent; |
44c58186 PS |
1150 | union { |
1151 | struct { | |
1152 | atomic_t num_writes; | |
1153 | atomic_t num_reads; | |
1154 | atomic_t num_flushes; | |
1155 | atomic_t num_oplock_brks; | |
1156 | atomic_t num_opens; | |
1157 | atomic_t num_closes; | |
1158 | atomic_t num_deletes; | |
1159 | atomic_t num_mkdirs; | |
1160 | atomic_t num_posixopens; | |
1161 | atomic_t num_posixmkdirs; | |
1162 | atomic_t num_rmdirs; | |
1163 | atomic_t num_renames; | |
1164 | atomic_t num_t2renames; | |
1165 | atomic_t num_ffirst; | |
1166 | atomic_t num_fnext; | |
1167 | atomic_t num_fclose; | |
1168 | atomic_t num_hardlinks; | |
1169 | atomic_t num_symlinks; | |
1170 | atomic_t num_locks; | |
1171 | atomic_t num_acl_get; | |
1172 | atomic_t num_acl_set; | |
1173 | } cifs_stats; | |
d60622eb PS |
1174 | struct { |
1175 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
1176 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
1177 | } smb2_stats; | |
44c58186 | 1178 | } stats; |
1da177e4 LT |
1179 | __u64 bytes_read; |
1180 | __u64 bytes_written; | |
3afca265 | 1181 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 1182 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 1183 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 1184 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
1185 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
1186 | bool pipe:1; /* set if connection to pipe share */ | |
1187 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
1188 | bool retry:1; |
1189 | bool nocase:1; | |
3d4ef9a1 | 1190 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
82e9367c | 1191 | bool nodelete:1; |
95b1cb90 | 1192 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 1193 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 1194 | for this mount even if server would support */ |
b326614e | 1195 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 1196 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1197 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1198 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1199 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1200 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1201 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1202 | bool use_persistent:1; /* use persistent instead of durable handles */ |
3e7a02d4 | 1203 | bool no_lease:1; /* Do not request leases on files or directories */ |
b7fd0fa0 | 1204 | bool use_witness:1; /* use witness protocol */ |
769ee6a4 | 1205 | __le32 capabilities; |
faaf946a PS |
1206 | __u32 share_flags; |
1207 | __u32 maximal_access; | |
1208 | __u32 vol_serial_number; | |
1209 | __le64 vol_create_time; | |
8b217fe7 | 1210 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
ca567eb2 | 1211 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
af6a12ea SF |
1212 | __u32 ss_flags; /* sector size flags */ |
1213 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1214 | __u32 max_chunks; |
1215 | __u32 max_bytes_chunk; | |
1216 | __u32 max_bytes_copy; | |
6a50d71d | 1217 | __u32 max_cached_dirs; |
d03382ce SJ |
1218 | #ifdef CONFIG_CIFS_FSCACHE |
1219 | u64 resource_id; /* server resource id */ | |
70431bfd | 1220 | struct fscache_volume *fscache; /* cookie for share */ |
d03382ce | 1221 | #endif |
233839b1 | 1222 | struct list_head pending_opens; /* list of incomplete opens */ |
aea6794e | 1223 | struct cached_fids *cfids; |
c18c842b | 1224 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c | 1225 | #ifdef CONFIG_CIFS_DFS_UPCALL |
396935de | 1226 | struct list_head dfs_ses_list; |
6be2ea33 | 1227 | struct delayed_work dfs_cache_work; |
54be1f6c | 1228 | #endif |
6e1c1c08 | 1229 | struct delayed_work query_interfaces; /* query interfaces workqueue job */ |
3ae872de | 1230 | char *origin_fullpath; /* canonical copy of smb3_fs_context::source */ |
1da177e4 LT |
1231 | }; |
1232 | ||
7ffec372 JL |
1233 | /* |
1234 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1235 | * container holds a tcon reference. It is considered safe to free one of | |
1236 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1237 | * "get" on the container. | |
1238 | */ | |
1239 | struct tcon_link { | |
b647c35f | 1240 | struct rb_node tl_rbnode; |
6d4a0832 | 1241 | kuid_t tl_uid; |
9d002df4 JL |
1242 | unsigned long tl_flags; |
1243 | #define TCON_LINK_MASTER 0 | |
1244 | #define TCON_LINK_PENDING 1 | |
1245 | #define TCON_LINK_IN_TREE 2 | |
1246 | unsigned long tl_time; | |
1247 | atomic_t tl_count; | |
96daf2b0 | 1248 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1249 | }; |
1250 | ||
9d002df4 | 1251 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1252 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1253 | |
96daf2b0 | 1254 | static inline struct cifs_tcon * |
7ffec372 JL |
1255 | tlink_tcon(struct tcon_link *tlink) |
1256 | { | |
9d002df4 | 1257 | return tlink->tl_tcon; |
7ffec372 JL |
1258 | } |
1259 | ||
8ddecf5f AA |
1260 | static inline struct tcon_link * |
1261 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1262 | { | |
1263 | return cifs_sb->master_tlink; | |
1264 | } | |
1265 | ||
9d002df4 | 1266 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1267 | |
13cfb733 JL |
1268 | static inline struct tcon_link * |
1269 | cifs_get_tlink(struct tcon_link *tlink) | |
1270 | { | |
9d002df4 JL |
1271 | if (tlink && !IS_ERR(tlink)) |
1272 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1273 | return tlink; |
1274 | } | |
1275 | ||
7ffec372 | 1276 | /* This function is always expected to succeed */ |
96daf2b0 | 1277 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1278 | |
233839b1 PS |
1279 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1280 | ||
1281 | struct cifs_pending_open { | |
1282 | struct list_head olist; | |
1283 | struct tcon_link *tlink; | |
1284 | __u8 lease_key[16]; | |
1285 | __u32 oplock; | |
1286 | }; | |
1287 | ||
c3f207ab RS |
1288 | struct cifs_deferred_close { |
1289 | struct list_head dlist; | |
1290 | struct tcon_link *tlink; | |
1291 | __u16 netfid; | |
1292 | __u64 persistent_fid; | |
1293 | __u64 volatile_fid; | |
1294 | }; | |
1295 | ||
1da177e4 | 1296 | /* |
7ee1af76 JA |
1297 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1298 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1299 | */ |
1300 | struct cifsLockInfo { | |
7ee1af76 | 1301 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1302 | struct list_head blist; /* pointer to locks blocked on this */ |
1303 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1304 | __u64 offset; |
1305 | __u64 length; | |
03776f45 | 1306 | __u32 pid; |
9645759c RS |
1307 | __u16 type; |
1308 | __u16 flags; | |
1da177e4 LT |
1309 | }; |
1310 | ||
1311 | /* | |
1312 | * One of these for each open instance of a file | |
1313 | */ | |
1314 | struct cifs_search_info { | |
1315 | loff_t index_of_last_entry; | |
1316 | __u16 entries_in_buffer; | |
1317 | __u16 info_level; | |
1318 | __u32 resume_key; | |
d38d8c74 SF |
1319 | char *ntwrk_buf_start; |
1320 | char *srch_entries_start; | |
0752f152 | 1321 | char *last_entry; |
eaf35b1e | 1322 | const char *presume_name; |
1da177e4 | 1323 | unsigned int resume_name_len; |
4b18f2a9 SF |
1324 | bool endOfSearch:1; |
1325 | bool emptyDir:1; | |
1326 | bool unicode:1; | |
1327 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1328 | }; |
1329 | ||
d0959b08 | 1330 | #define ACL_NO_MODE ((umode_t)(-1)) |
226730b4 PS |
1331 | struct cifs_open_parms { |
1332 | struct cifs_tcon *tcon; | |
1333 | struct cifs_sb_info *cifs_sb; | |
1334 | int disposition; | |
1335 | int desired_access; | |
1336 | int create_options; | |
1337 | const char *path; | |
1338 | struct cifs_fid *fid; | |
ce558b0e | 1339 | umode_t mode; |
9cbc0b73 | 1340 | bool reconnect:1; |
226730b4 PS |
1341 | }; |
1342 | ||
4b4de76e PS |
1343 | struct cifs_fid { |
1344 | __u16 netfid; | |
f0df737e PS |
1345 | __u64 persistent_fid; /* persist file id for smb2 */ |
1346 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1347 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1348 | __u8 create_guid[16]; |
86f740f2 | 1349 | __u32 access; |
233839b1 | 1350 | struct cifs_pending_open *pending_open; |
42873b0a | 1351 | unsigned int epoch; |
dfe33f9a SF |
1352 | #ifdef CONFIG_CIFS_DEBUG2 |
1353 | __u64 mid; | |
1354 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1355 | bool purge_cache; |
4b4de76e PS |
1356 | }; |
1357 | ||
f45d3416 PS |
1358 | struct cifs_fid_locks { |
1359 | struct list_head llist; | |
1360 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1361 | struct list_head locks; /* locks held by fid above */ | |
1362 | }; | |
1363 | ||
1da177e4 | 1364 | struct cifsFileInfo { |
3afca265 | 1365 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1366 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1367 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1368 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1369 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1370 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1371 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1372 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1373 | struct list_head rlist; /* reconnect list */ |
c19204cb | 1374 | /* BB add lock scope info here if needed */ |
1da177e4 | 1375 | /* lock scope id (0 if none) */ |
a5e18bc3 | 1376 | struct dentry *dentry; |
13cfb733 | 1377 | struct tcon_link *tlink; |
3afca265 | 1378 | unsigned int f_flags; |
4b18f2a9 | 1379 | bool invalidHandle:1; /* file closed via session abend */ |
4e8aea30 | 1380 | bool swapfile:1; |
3bc303c2 | 1381 | bool oplock_break_cancelled:1; |
9bd45408 PS |
1382 | unsigned int oplock_epoch; /* epoch from the lease break */ |
1383 | __u32 oplock_level; /* oplock/lease level from the lease break */ | |
3afca265 SF |
1384 | int count; |
1385 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1386 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1387 | struct cifs_search_info srch_inf; |
9b646972 | 1388 | struct work_struct oplock_break; /* work for oplock breaks */ |
32546a95 | 1389 | struct work_struct put; /* work for the final part of _put */ |
c3f207ab | 1390 | struct delayed_work deferred; |
860b69a9 | 1391 | bool deferred_close_scheduled; /* Flag to indicate close is scheduled */ |
76894f3e | 1392 | char *symlink_target; |
1da177e4 LT |
1393 | }; |
1394 | ||
fa2989f4 PS |
1395 | struct cifs_io_parms { |
1396 | __u16 netfid; | |
09a4707e PS |
1397 | __u64 persistent_fid; /* persist file id for smb2 */ |
1398 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1399 | __u32 pid; |
1400 | __u64 offset; | |
1401 | unsigned int length; | |
96daf2b0 | 1402 | struct cifs_tcon *tcon; |
352d96f3 | 1403 | struct TCP_Server_Info *server; |
fa2989f4 PS |
1404 | }; |
1405 | ||
ccf7f408 PS |
1406 | struct cifs_aio_ctx { |
1407 | struct kref refcount; | |
1408 | struct list_head list; | |
1409 | struct mutex aio_mutex; | |
1410 | struct completion done; | |
1411 | struct iov_iter iter; | |
1412 | struct kiocb *iocb; | |
1413 | struct cifsFileInfo *cfile; | |
1414 | struct bio_vec *bv; | |
c610c4b6 | 1415 | loff_t pos; |
d08089f6 | 1416 | unsigned int nr_pinned_pages; |
ccf7f408 PS |
1417 | ssize_t rc; |
1418 | unsigned int len; | |
1419 | unsigned int total_len; | |
d08089f6 | 1420 | unsigned int bv_need_unpin; /* If ->bv[] needs unpinning */ |
ccf7f408 | 1421 | bool should_dirty; |
6e6e2b86 LL |
1422 | /* |
1423 | * Indicates if this aio_ctx is for direct_io, | |
1424 | * If yes, iter is a copy of the user passed iov_iter | |
1425 | */ | |
1426 | bool direct_io; | |
ccf7f408 PS |
1427 | }; |
1428 | ||
09a4707e PS |
1429 | /* asynchronous read support */ |
1430 | struct cifs_readdata { | |
1431 | struct kref refcount; | |
1432 | struct list_head list; | |
1433 | struct completion done; | |
1434 | struct cifsFileInfo *cfile; | |
1435 | struct address_space *mapping; | |
6685c5e2 | 1436 | struct cifs_aio_ctx *ctx; |
09a4707e | 1437 | __u64 offset; |
d08089f6 | 1438 | ssize_t got_bytes; |
09a4707e PS |
1439 | unsigned int bytes; |
1440 | pid_t pid; | |
1441 | int result; | |
09a4707e | 1442 | struct work_struct work; |
d08089f6 | 1443 | struct iov_iter iter; |
738f9de5 | 1444 | struct kvec iov[2]; |
352d96f3 | 1445 | struct TCP_Server_Info *server; |
74dcf418 LL |
1446 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1447 | struct smbd_mr *mr; | |
1448 | #endif | |
335b7b62 | 1449 | struct cifs_credits credits; |
09a4707e PS |
1450 | }; |
1451 | ||
33319141 PS |
1452 | /* asynchronous write support */ |
1453 | struct cifs_writedata { | |
1454 | struct kref refcount; | |
1455 | struct list_head list; | |
1456 | struct completion done; | |
1457 | enum writeback_sync_modes sync_mode; | |
1458 | struct work_struct work; | |
1459 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1460 | struct cifs_aio_ctx *ctx; |
d08089f6 DH |
1461 | struct iov_iter iter; |
1462 | struct bio_vec *bv; | |
33319141 PS |
1463 | __u64 offset; |
1464 | pid_t pid; | |
1465 | unsigned int bytes; | |
1466 | int result; | |
352d96f3 | 1467 | struct TCP_Server_Info *server; |
db223a59 LL |
1468 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1469 | struct smbd_mr *mr; | |
1470 | #endif | |
335b7b62 | 1471 | struct cifs_credits credits; |
33319141 PS |
1472 | }; |
1473 | ||
5f6dbc9e JL |
1474 | /* |
1475 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1476 | * cfile->file_info_lock held. |
5f6dbc9e | 1477 | */ |
764a1b1a JL |
1478 | static inline void |
1479 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1480 | { |
5f6dbc9e | 1481 | ++cifs_file->count; |
6ab409b5 DK |
1482 | } |
1483 | ||
764a1b1a | 1484 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
32546a95 RS |
1485 | void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr, |
1486 | bool offload); | |
b33879aa | 1487 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1488 | |
18cceb6a PS |
1489 | #define CIFS_CACHE_READ_FLG 1 |
1490 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1491 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1492 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1493 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1494 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a | 1495 | |
874c8ca1 | 1496 | #define CIFS_CACHE_READ(cinode) ((cinode->oplock & CIFS_CACHE_READ_FLG) || (CIFS_SB(cinode->netfs.inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)) |
53ef1016 | 1497 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
874c8ca1 | 1498 | #define CIFS_CACHE_WRITE(cinode) ((cinode->oplock & CIFS_CACHE_WRITE_FLG) || (CIFS_SB(cinode->netfs.inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)) |
18cceb6a | 1499 | |
1da177e4 LT |
1500 | /* |
1501 | * One of these for each file inode | |
1502 | */ | |
1503 | ||
1504 | struct cifsInodeInfo { | |
874c8ca1 | 1505 | struct netfs_inode netfs; /* Netfslib context and vfs inode */ |
d59dad2b | 1506 | bool can_cache_brlcks; |
f45d3416 | 1507 | struct list_head llist; /* locks helb by this inode */ |
d46b0da7 DW |
1508 | /* |
1509 | * NOTE: Some code paths call down_read(lock_sem) twice, so | |
a03f507d | 1510 | * we must always use cifs_down_write() instead of down_write() |
d46b0da7 DW |
1511 | * for this semaphore to avoid deadlocks. |
1512 | */ | |
1b4b55a1 | 1513 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1514 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1515 | struct list_head openFileList; |
487317c9 | 1516 | spinlock_t open_file_lock; /* protects openFileList */ |
1da177e4 | 1517 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1518 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1519 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1520 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1521 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
9bd45408 | 1522 | #define CIFS_INODE_FLAG_UNUSED (2) /* Unused flag */ |
aff8d5ca JL |
1523 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1524 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1525 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
c3f207ab | 1526 | #define CIFS_INO_MODIFIED_ATTR (6) /* Indicate change in mtime/ctime */ |
35866f3f | 1527 | #define CIFS_INO_CLOSE_ON_LOCK (7) /* Not to defer the close when lock is set */ |
aff8d5ca | 1528 | unsigned long flags; |
c11f1df5 SP |
1529 | spinlock_t writers_lock; |
1530 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1531 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1532 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1533 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1534 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1535 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
c3f207ab RS |
1536 | struct list_head deferred_closes; /* list of deferred closes */ |
1537 | spinlock_t deferred_lock; /* protection on deferred list */ | |
0ab95c25 | 1538 | bool lease_granted; /* Flag to indicate whether lease or oplock is granted. */ |
76894f3e | 1539 | char *symlink_target; |
1da177e4 LT |
1540 | }; |
1541 | ||
1542 | static inline struct cifsInodeInfo * | |
1543 | CIFS_I(struct inode *inode) | |
1544 | { | |
874c8ca1 | 1545 | return container_of(inode, struct cifsInodeInfo, netfs.inode); |
1da177e4 LT |
1546 | } |
1547 | ||
1548 | static inline struct cifs_sb_info * | |
1549 | CIFS_SB(struct super_block *sb) | |
1550 | { | |
1551 | return sb->s_fs_info; | |
1552 | } | |
1553 | ||
7119e220 AV |
1554 | static inline struct cifs_sb_info * |
1555 | CIFS_FILE_SB(struct file *file) | |
1556 | { | |
1557 | return CIFS_SB(file_inode(file)->i_sb); | |
1558 | } | |
1559 | ||
ab2f218f | 1560 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1561 | { |
1562 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1563 | return '/'; | |
1564 | else | |
1565 | return '\\'; | |
1566 | } | |
1da177e4 | 1567 | |
f87d39d9 SF |
1568 | static inline void |
1569 | convert_delimiter(char *path, char delim) | |
1570 | { | |
1cc9bd68 | 1571 | char old_delim, *pos; |
f87d39d9 SF |
1572 | |
1573 | if (delim == '/') | |
1574 | old_delim = '\\'; | |
1575 | else | |
1576 | old_delim = '/'; | |
1577 | ||
1cc9bd68 SF |
1578 | pos = path; |
1579 | while ((pos = strchr(pos, old_delim))) | |
1580 | *pos = delim; | |
f87d39d9 SF |
1581 | } |
1582 | ||
a4544347 SF |
1583 | #define cifs_stats_inc atomic_inc |
1584 | ||
96daf2b0 | 1585 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1586 | unsigned int bytes) |
1587 | { | |
1588 | if (bytes) { | |
1589 | spin_lock(&tcon->stat_lock); | |
1590 | tcon->bytes_written += bytes; | |
1591 | spin_unlock(&tcon->stat_lock); | |
1592 | } | |
1593 | } | |
1594 | ||
96daf2b0 | 1595 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1596 | unsigned int bytes) |
1597 | { | |
1598 | spin_lock(&tcon->stat_lock); | |
1599 | tcon->bytes_read += bytes; | |
1600 | spin_unlock(&tcon->stat_lock); | |
1601 | } | |
a4544347 | 1602 | |
2b84a36c JL |
1603 | |
1604 | /* | |
44d22d84 JL |
1605 | * This is the prototype for the mid receive function. This function is for |
1606 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1607 | * just after the MID in struct smb_hdr). Note: | |
1608 | * | |
1609 | * - This will be called by cifsd, with no locks held. | |
1610 | * - The mid will still be on the pending_mid_q. | |
1611 | * - mid->resp_buf will point to the current buffer. | |
1612 | * | |
1613 | * Returns zero on a successful receive, or an error. The receive state in | |
1614 | * the TCP_Server_Info will also be updated. | |
1615 | */ | |
1616 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1617 | struct mid_q_entry *mid); | |
1618 | ||
1619 | /* | |
1620 | * This is the prototype for the mid callback function. This is called once the | |
1621 | * mid has been received off of the socket. When creating one, take special | |
1622 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1623 | * |
3c1105df JL |
1624 | * - it will be called by cifsd, with no locks held |
1625 | * - the mid will be removed from any lists | |
2b84a36c JL |
1626 | */ |
1627 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1628 | ||
9b7c18a2 PS |
1629 | /* |
1630 | * This is the protopyte for mid handle function. This is called once the mid | |
1631 | * has been recognized after decryption of the message. | |
1632 | */ | |
1633 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1634 | struct mid_q_entry *mid); | |
1635 | ||
1da177e4 LT |
1636 | /* one of these for every pending CIFS request to the server */ |
1637 | struct mid_q_entry { | |
1638 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1639 | struct kref refcount; |
2dc7e1c0 | 1640 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 | 1641 | __u64 mid; /* multiplex id */ |
c781af7e | 1642 | __u16 credits; /* number of credits consumed by this mid */ |
86a7964b | 1643 | __u16 credits_received; /* number of credits from the response */ |
7c9421e1 | 1644 | __u32 pid; /* process id */ |
1da177e4 | 1645 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1646 | unsigned long when_alloc; /* when mid was created */ |
1647 | #ifdef CONFIG_CIFS_STATS2 | |
1648 | unsigned long when_sent; /* time when smb send finished */ | |
1649 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1650 | #endif | |
44d22d84 | 1651 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1652 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1653 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1654 | void *callback_data; /* general purpose pointer for callback */ |
f1f27ad7 | 1655 | struct task_struct *creator; |
d4e4854f | 1656 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1657 | unsigned int resp_buf_size; |
7c9421e1 | 1658 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1659 | unsigned int mid_flags; |
7c9421e1 | 1660 | __le16 command; /* smb command code */ |
8a26f0f7 | 1661 | unsigned int optype; /* operation type */ |
7c9421e1 | 1662 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1663 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1664 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1665 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1666 | }; |
1667 | ||
38bd4906 SP |
1668 | struct close_cancelled_open { |
1669 | struct cifs_fid fid; | |
1670 | struct cifs_tcon *tcon; | |
1671 | struct work_struct work; | |
87bc2376 RS |
1672 | __u64 mid; |
1673 | __u16 cmd; | |
38bd4906 SP |
1674 | }; |
1675 | ||
789e6661 SF |
1676 | /* Make code in transport.c a little cleaner by moving |
1677 | update of optional stats into function below */ | |
789e6661 SF |
1678 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
1679 | { | |
1680 | atomic_inc(&server->in_send); | |
1681 | } | |
1682 | ||
1683 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1684 | { | |
1685 | atomic_dec(&server->in_send); | |
1686 | } | |
1687 | ||
1688 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1689 | { | |
1690 | atomic_inc(&server->num_waiters); | |
1691 | } | |
1692 | ||
1693 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1694 | { | |
1695 | atomic_dec(&server->num_waiters); | |
1696 | } | |
1697 | ||
1ae9a5a5 | 1698 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 SF |
1699 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1700 | { | |
1701 | mid->when_sent = jiffies; | |
1702 | } | |
1703 | #else | |
789e6661 SF |
1704 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1705 | { | |
1706 | } | |
1707 | #endif | |
1da177e4 | 1708 | |
ff5dbd9e SF |
1709 | /* for pending dnotify requests */ |
1710 | struct dir_notify_req { | |
13cd4b7f SF |
1711 | struct list_head lhead; |
1712 | __le16 Pid; | |
1713 | __le16 PidHigh; | |
1714 | __u16 Mid; | |
1715 | __u16 Tid; | |
1716 | __u16 Uid; | |
1717 | __u16 netfid; | |
1718 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1719 | int multishot; | |
1720 | struct file *pfile; | |
ff5dbd9e SF |
1721 | }; |
1722 | ||
366781c1 SF |
1723 | struct dfs_info3_param { |
1724 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1725 | int path_consumed; |
366781c1 SF |
1726 | int server_type; |
1727 | int ref_flag; | |
1728 | char *path_name; | |
1729 | char *node_name; | |
e7b602f4 | 1730 | int ttl; |
366781c1 SF |
1731 | }; |
1732 | ||
9e992755 RS |
1733 | struct file_list { |
1734 | struct list_head list; | |
1735 | struct cifsFileInfo *cfile; | |
1736 | }; | |
1737 | ||
a73a26d9 PA |
1738 | struct cifs_mount_ctx { |
1739 | struct cifs_sb_info *cifs_sb; | |
1740 | struct smb3_fs_context *fs_ctx; | |
1741 | unsigned int xid; | |
1742 | struct TCP_Server_Info *server; | |
1743 | struct cifs_ses *ses; | |
1744 | struct cifs_tcon *tcon; | |
396935de | 1745 | struct list_head dfs_ses_list; |
a73a26d9 PA |
1746 | }; |
1747 | ||
ce04127c PA |
1748 | static inline void __free_dfs_info_param(struct dfs_info3_param *param) |
1749 | { | |
1750 | kfree(param->path_name); | |
1751 | kfree(param->node_name); | |
1752 | } | |
1753 | ||
366781c1 | 1754 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
ce04127c PA |
1755 | { |
1756 | if (param) | |
1757 | __free_dfs_info_param(param); | |
1758 | } | |
1759 | ||
1760 | static inline void zfree_dfs_info_param(struct dfs_info3_param *param) | |
366781c1 SF |
1761 | { |
1762 | if (param) { | |
ce04127c PA |
1763 | __free_dfs_info_param(param); |
1764 | memset(param, 0, sizeof(*param)); | |
366781c1 SF |
1765 | } |
1766 | } | |
1767 | ||
1768 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1769 | int number_of_items) | |
1770 | { | |
1771 | int i; | |
c19204cb | 1772 | |
366781c1 SF |
1773 | if ((number_of_items == 0) || (param == NULL)) |
1774 | return; | |
1775 | for (i = 0; i < number_of_items; i++) { | |
1776 | kfree(param[i].path_name); | |
1777 | kfree(param[i].node_name); | |
1778 | } | |
1779 | kfree(param); | |
1780 | } | |
1781 | ||
9a66396f PS |
1782 | static inline bool is_interrupt_error(int error) |
1783 | { | |
1784 | switch (error) { | |
1785 | case -EINTR: | |
1786 | case -ERESTARTSYS: | |
1787 | case -ERESTARTNOHAND: | |
1788 | case -ERESTARTNOINTR: | |
1789 | return true; | |
1790 | } | |
1791 | return false; | |
1792 | } | |
1793 | ||
1794 | static inline bool is_retryable_error(int error) | |
1795 | { | |
1796 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1797 | return true; | |
1798 | return false; | |
1799 | } | |
1800 | ||
86f740f2 AA |
1801 | |
1802 | /* cifs_get_writable_file() flags */ | |
1803 | #define FIND_WR_ANY 0 | |
1804 | #define FIND_WR_FSUID_ONLY 1 | |
1805 | #define FIND_WR_WITH_DELETE 2 | |
1806 | ||
1da177e4 LT |
1807 | #define MID_FREE 0 |
1808 | #define MID_REQUEST_ALLOCATED 1 | |
1809 | #define MID_REQUEST_SUBMITTED 2 | |
1810 | #define MID_RESPONSE_RECEIVED 4 | |
1811 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1812 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1813 | #define MID_SHUTDOWN 0x20 |
d527f513 | 1814 | #define MID_RESPONSE_READY 0x40 /* ready for other process handle the rsp */ |
ec637e3f | 1815 | |
38bd4906 SP |
1816 | /* Flags */ |
1817 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1818 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1819 | |
ec637e3f SF |
1820 | /* Types of response buffer returned from SendReceive2 */ |
1821 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1822 | #define CIFS_SMALL_BUFFER 1 | |
1823 | #define CIFS_LARGE_BUFFER 2 | |
1824 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1825 | |
133672ef | 1826 | /* Type of Request to SendReceive2 */ |
7749981e | 1827 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
392e1c5d | 1828 | #define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */ |
7749981e | 1829 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
133672ef SF |
1830 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1831 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
392e1c5d | 1832 | #define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */ |
133672ef | 1833 | |
a891f0f8 | 1834 | /* Type of request operation */ |
04ad69c3 PA |
1835 | #define CIFS_ECHO_OP 0x080 /* echo request */ |
1836 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
1837 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ | |
1838 | #define CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */ | |
0f56db83 | 1839 | /* Lower bitmask values are reserved by others below. */ |
04ad69c3 PA |
1840 | #define CIFS_SESS_OP 0x2000 /* session setup request */ |
1841 | #define CIFS_OP_MASK 0x2780 /* mask request type */ | |
7fb8986e | 1842 | |
04ad69c3 PA |
1843 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
1844 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ | |
1845 | #define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */ | |
a891f0f8 | 1846 | |
3979877e SF |
1847 | /* Security Flags: indicate type of session setup needed */ |
1848 | #define CIFSSEC_MAY_SIGN 0x00001 | |
3979877e SF |
1849 | #define CIFSSEC_MAY_NTLMV2 0x00004 |
1850 | #define CIFSSEC_MAY_KRB5 0x00008 | |
3979877e | 1851 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ |
ac683924 | 1852 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1853 | |
1854 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1855 | /* note that only one of the following can be set so the | |
1856 | result of setting MUST flags more than once will be to | |
1857 | require use of the stronger protocol */ | |
3979877e SF |
1858 | #define CIFSSEC_MUST_NTLMV2 0x04004 |
1859 | #define CIFSSEC_MUST_KRB5 0x08008 | |
0d3a01fa | 1860 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1861 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1862 | #else |
ac683924 | 1863 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1864 | #endif /* UPCALL */ |
3979877e | 1865 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ |
ac683924 | 1866 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1867 | |
896a8fc2 | 1868 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
76a3c92e RS |
1869 | #define CIFSSEC_MAX (CIFSSEC_MUST_NTLMV2) |
1870 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) | |
1da177e4 LT |
1871 | /* |
1872 | ***************************************************************** | |
1873 | * All constants go here | |
1874 | ***************************************************************** | |
1875 | */ | |
1876 | ||
1877 | #define UID_HASH (16) | |
1878 | ||
1879 | /* | |
1880 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1881 | * following to be declared. | |
1882 | */ | |
1883 | ||
1884 | /**************************************************************************** | |
d7d7a66a SP |
1885 | * Here are all the locks (spinlock, mutex, semaphore) in cifs.ko, arranged according |
1886 | * to the locking order. i.e. if two locks are to be held together, the lock that | |
1887 | * appears higher in this list needs to be taken before the other. | |
1da177e4 | 1888 | * |
d7d7a66a SP |
1889 | * If you hold a lock that is lower in this list, and you need to take a higher lock |
1890 | * (or if you think that one of the functions that you're calling may need to), first | |
1891 | * drop the lock you hold, pick up the higher lock, then the lower one. This will | |
1892 | * ensure that locks are picked up only in one direction in the below table | |
1893 | * (top to bottom). | |
1da177e4 | 1894 | * |
d7d7a66a SP |
1895 | * Also, if you expect a function to be called with a lock held, explicitly document |
1896 | * this in the comments on top of your function definition. | |
487317c9 | 1897 | * |
d7d7a66a SP |
1898 | * And also, try to keep the critical sections (lock hold time) to be as minimal as |
1899 | * possible. Blocking / calling other functions with a lock held always increase | |
1900 | * the risk of a possible deadlock. | |
1da177e4 | 1901 | * |
d7d7a66a SP |
1902 | * Following this rule will avoid unnecessary deadlocks, which can get really hard to |
1903 | * debug. Also, any new lock that you introduce, please add to this list in the correct | |
1904 | * order. | |
1905 | * | |
1906 | * Please populate this list whenever you introduce new locks in your changes. Or in | |
1907 | * case I've missed some existing locks. Please ensure that it's added in the list | |
1908 | * based on the locking order expected. | |
1909 | * | |
1910 | * ===================================================================================== | |
1911 | * Lock Protects Initialization fn | |
1912 | * ===================================================================================== | |
1913 | * vol_list_lock | |
1914 | * vol_info->ctx_lock vol_info->ctx | |
1915 | * cifs_sb_info->tlink_tree_lock cifs_sb_info->tlink_tree cifs_setup_cifs_sb | |
1916 | * TCP_Server_Info-> TCP_Server_Info cifs_get_tcp_session | |
1917 | * reconnect_mutex | |
1918 | * TCP_Server_Info->srv_mutex TCP_Server_Info cifs_get_tcp_session | |
1919 | * cifs_ses->session_mutex cifs_ses sesInfoAlloc | |
1920 | * cifs_tcon | |
1921 | * cifs_tcon->open_file_lock cifs_tcon->openFileList tconInfoAlloc | |
1922 | * cifs_tcon->pending_opens | |
1923 | * cifs_tcon->stat_lock cifs_tcon->bytes_read tconInfoAlloc | |
1924 | * cifs_tcon->bytes_written | |
1925 | * cifs_tcp_ses_lock cifs_tcp_ses_list sesInfoAlloc | |
1926 | * GlobalMid_Lock GlobalMaxActiveXid init_cifs | |
1927 | * GlobalCurrentXid | |
1928 | * GlobalTotalActiveXid | |
1929 | * TCP_Server_Info->srv_lock (anything in struct not protected by another lock and can change) | |
1930 | * TCP_Server_Info->mid_lock TCP_Server_Info->pending_mid_q cifs_get_tcp_session | |
1931 | * ->CurrentMid | |
1932 | * (any changes in mid_q_entry fields) | |
1933 | * TCP_Server_Info->req_lock TCP_Server_Info->in_flight cifs_get_tcp_session | |
1934 | * ->credits | |
1935 | * ->echo_credits | |
1936 | * ->oplock_credits | |
1937 | * ->reconnect_instance | |
1938 | * cifs_ses->ses_lock (anything that is not protected by another lock and can change) | |
1939 | * cifs_ses->iface_lock cifs_ses->iface_list sesInfoAlloc | |
1940 | * ->iface_count | |
1941 | * ->iface_last_update | |
1942 | * cifs_ses->chan_lock cifs_ses->chans | |
1943 | * ->chans_need_reconnect | |
1944 | * ->chans_in_reconnect | |
1945 | * cifs_tcon->tc_lock (anything that is not protected by another lock and can change) | |
1946 | * cifsInodeInfo->open_file_lock cifsInodeInfo->openFileList cifs_alloc_inode | |
1947 | * cifsInodeInfo->writers_lock cifsInodeInfo->writers cifsInodeInfo_alloc | |
1948 | * cifsInodeInfo->lock_sem cifsInodeInfo->llist cifs_init_once | |
1949 | * ->can_cache_brlcks | |
1950 | * cifsInodeInfo->deferred_lock cifsInodeInfo->deferred_closes cifsInodeInfo_alloc | |
2da338ff | 1951 | * cached_fid->fid_mutex cifs_tcon->crfid tcon_info_alloc |
d7d7a66a SP |
1952 | * cifsFileInfo->fh_mutex cifsFileInfo cifs_new_fileinfo |
1953 | * cifsFileInfo->file_info_lock cifsFileInfo->count cifs_new_fileinfo | |
1954 | * ->invalidHandle initiate_cifs_search | |
1955 | * ->oplock_break_cancelled | |
1956 | * cifs_aio_ctx->aio_mutex cifs_aio_ctx cifs_aio_ctx_alloc | |
1da177e4 LT |
1957 | ****************************************************************************/ |
1958 | ||
1959 | #ifdef DECLARE_GLOBALS_HERE | |
1960 | #define GLOBAL_EXTERN | |
1961 | #else | |
1962 | #define GLOBAL_EXTERN extern | |
1963 | #endif | |
1964 | ||
e7ddee90 JL |
1965 | /* |
1966 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1967 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1968 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1969 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1970 | * by iterating over cifs_tcp_ses_list |
1971 | */ | |
89e42f49 | 1972 | extern struct list_head cifs_tcp_ses_list; |
e7ddee90 | 1973 | |
f1987b44 JL |
1974 | /* |
1975 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1976 | * tcp session, and the list of tcon's per smb session. It also protects | |
d7d7a66a | 1977 | * the reference counters for the server, smb session, and tcon. |
3afca265 SF |
1978 | * generally the locks should be taken in order tcp_ses_lock before |
1979 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1980 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1981 | */ |
89e42f49 | 1982 | extern spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1983 | |
1da177e4 LT |
1984 | /* |
1985 | * Global transaction id (XID) information | |
1986 | */ | |
1bfa25ee SF |
1987 | extern unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ |
1988 | extern unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ | |
1989 | extern unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ | |
1990 | extern spinlock_t GlobalMid_Lock; /* protects above & list operations on midQ entries */ | |
1991 | ||
1da177e4 LT |
1992 | /* |
1993 | * Global counters, updated atomically | |
1994 | */ | |
1bfa25ee SF |
1995 | extern atomic_t sesInfoAllocCount; |
1996 | extern atomic_t tconInfoAllocCount; | |
1997 | extern atomic_t tcpSesNextId; | |
1998 | extern atomic_t tcpSesAllocCount; | |
1999 | extern atomic_t tcpSesReconnectCount; | |
2000 | extern atomic_t tconInfoReconnectCount; | |
1da177e4 | 2001 | |
aaa9bbe0 | 2002 | /* Various Debug counters */ |
c2c17ddb SF |
2003 | extern atomic_t buf_alloc_count; /* current number allocated */ |
2004 | extern atomic_t small_buf_alloc_count; | |
4498eed5 | 2005 | #ifdef CONFIG_CIFS_STATS2 |
c2c17ddb SF |
2006 | extern atomic_t total_buf_alloc_count; /* total allocated over all time */ |
2007 | extern atomic_t total_small_buf_alloc_count; | |
00778e22 | 2008 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 | 2009 | #endif |
1da177e4 LT |
2010 | |
2011 | /* Misc globals */ | |
f92a720e SF |
2012 | extern bool enable_oplocks; /* enable or disable oplocks */ |
2013 | extern bool lookupCacheEnabled; | |
2014 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 2015 | with more secure ntlmssp2 challenge/resp */ |
f92a720e | 2016 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
29e27923 | 2017 | extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */ |
fbfd0b46 | 2018 | extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */ |
53d31a3f | 2019 | extern bool enable_negotiate_signing; /* request use of faster (GMAC) signing if available */ |
f92a720e SF |
2020 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
2021 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
2022 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
2023 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
2024 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
238b351d | 2025 | extern unsigned int dir_cache_timeout; /* max time for directory lease caching of dir */ |
f92a720e | 2026 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ |
c2c17ddb | 2027 | extern atomic_t mid_count; |
1da177e4 | 2028 | |
9b646972 | 2029 | void cifs_oplock_break(struct work_struct *work); |
b98749ca | 2030 | void cifs_queue_oplock_break(struct cifsFileInfo *cfile); |
c3f207ab | 2031 | void smb2_deferred_work_close(struct work_struct *work); |
3b7433b8 | 2032 | |
c3f207ab | 2033 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 2034 | extern struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 2035 | extern struct workqueue_struct *decrypt_wq; |
32546a95 | 2036 | extern struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 2037 | extern struct workqueue_struct *cifsoplockd_wq; |
c3f207ab | 2038 | extern struct workqueue_struct *deferredclose_wq; |
3d22462a | 2039 | extern __u32 cifs_lock_secret; |
abd2e44d | 2040 | |
2dc7e1c0 PS |
2041 | extern mempool_t *cifs_mid_poolp; |
2042 | ||
23db65f5 JL |
2043 | /* Operations for different SMB versions */ |
2044 | #define SMB1_VERSION_STRING "1.0" | |
7ef93ffc SF |
2045 | #define SMB20_VERSION_STRING "2.0" |
2046 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY | |
23db65f5 JL |
2047 | extern struct smb_version_operations smb1_operations; |
2048 | extern struct smb_version_values smb1_values; | |
53ef1016 | 2049 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 2050 | extern struct smb_version_values smb20_values; |
7ef93ffc | 2051 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
1080ef75 SF |
2052 | #define SMB21_VERSION_STRING "2.1" |
2053 | extern struct smb_version_operations smb21_operations; | |
2054 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
2055 | #define SMBDEFAULT_VERSION_STRING "default" |
2056 | extern struct smb_version_values smbdefault_values; | |
2057 | #define SMB3ANY_VERSION_STRING "3" | |
2058 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 2059 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 2060 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 2061 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 2062 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 2063 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
2064 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
2065 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 2066 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
2067 | #define ALT_SMB311_VERSION_STRING "3.11" |
2068 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 2069 | extern struct smb_version_values smb311_values; |
b8f7442b | 2070 | |
0b0430c6 K |
2071 | static inline char *get_security_type_str(enum securityEnum sectype) |
2072 | { | |
2073 | switch (sectype) { | |
2074 | case RawNTLMSSP: | |
2075 | return "RawNTLMSSP"; | |
2076 | case Kerberos: | |
2077 | return "Kerberos"; | |
2078 | case NTLMv2: | |
2079 | return "NTLMv2"; | |
0b0430c6 K |
2080 | default: |
2081 | return "Unknown"; | |
2082 | } | |
2083 | } | |
2084 | ||
b8f7442b AA |
2085 | static inline bool is_smb1_server(struct TCP_Server_Info *server) |
2086 | { | |
2087 | return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0; | |
2088 | } | |
2089 | ||
e183785f PA |
2090 | static inline bool is_tcon_dfs(struct cifs_tcon *tcon) |
2091 | { | |
2092 | /* | |
2093 | * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS | |
2094 | * Subsystem Notifies That a Share Is a DFS Share. | |
2095 | * | |
2096 | * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server | |
2097 | * Application Updates a Share. | |
2098 | */ | |
2099 | if (!tcon || !tcon->ses || !tcon->ses->server) | |
2100 | return false; | |
2101 | return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS : | |
2102 | tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT); | |
2103 | } | |
2104 | ||
c88f7dcd PA |
2105 | static inline bool cifs_is_referral_server(struct cifs_tcon *tcon, |
2106 | const struct dfs_info3_param *ref) | |
2107 | { | |
2108 | /* | |
2109 | * Check if all targets are capable of handling DFS referrals as per | |
2110 | * MS-DFSC 2.2.4 RESP_GET_DFS_REFERRAL. | |
2111 | */ | |
2112 | return is_tcon_dfs(tcon) || (ref && (ref->flags & DFSREF_REFERRAL_SERVER)); | |
2113 | } | |
2114 | ||
773891ff | 2115 | static inline u64 cifs_flock_len(const struct file_lock *fl) |
d80c6984 | 2116 | { |
773891ff | 2117 | return (u64)fl->fl_end - fl->fl_start + 1; |
d80c6984 PA |
2118 | } |
2119 | ||
de3a9e94 PA |
2120 | static inline size_t ntlmssp_workstation_name_size(const struct cifs_ses *ses) |
2121 | { | |
2122 | if (WARN_ON_ONCE(!ses || !ses->server)) | |
2123 | return 0; | |
2124 | /* | |
2125 | * Make workstation name no more than 15 chars when using insecure dialects as some legacy | |
2126 | * servers do require it during NTLMSSP. | |
2127 | */ | |
2128 | if (ses->server->dialect <= SMB20_PROT_ID) | |
2129 | return min_t(size_t, sizeof(ses->workstation_name), RFC1001_NAME_LEN_WITH_NULL); | |
2130 | return sizeof(ses->workstation_name); | |
2131 | } | |
2132 | ||
76894f3e PA |
2133 | static inline void move_cifs_info_to_smb2(struct smb2_file_all_info *dst, const FILE_ALL_INFO *src) |
2134 | { | |
2135 | memcpy(dst, src, (size_t)((u8 *)&src->AccessFlags - (u8 *)src)); | |
2136 | dst->AccessFlags = src->AccessFlags; | |
2137 | dst->CurrentByteOffset = src->CurrentByteOffset; | |
2138 | dst->Mode = src->Mode; | |
2139 | dst->AlignmentRequirement = src->AlignmentRequirement; | |
2140 | dst->FileNameLength = src->FileNameLength; | |
2141 | } | |
2142 | ||
d08089f6 DH |
2143 | static inline int cifs_get_num_sgs(const struct smb_rqst *rqst, |
2144 | int num_rqst, | |
2145 | const u8 *sig) | |
f7f291e1 PA |
2146 | { |
2147 | unsigned int len, skip; | |
2148 | unsigned int nents = 0; | |
2149 | unsigned long addr; | |
37de5a80 | 2150 | size_t data_size; |
f7f291e1 PA |
2151 | int i, j; |
2152 | ||
89542781 PA |
2153 | /* |
2154 | * The first rqst has a transform header where the first 20 bytes are | |
2155 | * not part of the encrypted blob. | |
2156 | */ | |
2157 | skip = 20; | |
2158 | ||
f7f291e1 PA |
2159 | /* Assumes the first rqst has a transform header as the first iov. |
2160 | * I.e. | |
2161 | * rqst[0].rq_iov[0] is transform header | |
2162 | * rqst[0].rq_iov[1+] data to be encrypted/decrypted | |
2163 | * rqst[1+].rq_iov[0+] data to be encrypted/decrypted | |
2164 | */ | |
2165 | for (i = 0; i < num_rqst; i++) { | |
37de5a80 DH |
2166 | data_size = iov_iter_count(&rqst[i].rq_iter); |
2167 | ||
d08089f6 DH |
2168 | /* We really don't want a mixture of pinned and unpinned pages |
2169 | * in the sglist. It's hard to keep track of which is what. | |
2170 | * Instead, we convert to a BVEC-type iterator higher up. | |
f7f291e1 | 2171 | */ |
37de5a80 DH |
2172 | if (data_size && |
2173 | WARN_ON_ONCE(user_backed_iter(&rqst[i].rq_iter))) | |
d08089f6 DH |
2174 | return -EIO; |
2175 | ||
2176 | /* We also don't want to have any extra refs or pins to clean | |
2177 | * up in the sglist. | |
2178 | */ | |
37de5a80 DH |
2179 | if (data_size && |
2180 | WARN_ON_ONCE(iov_iter_extract_will_pin(&rqst[i].rq_iter))) | |
d08089f6 DH |
2181 | return -EIO; |
2182 | ||
f7f291e1 PA |
2183 | for (j = 0; j < rqst[i].rq_nvec; j++) { |
2184 | struct kvec *iov = &rqst[i].rq_iov[j]; | |
2185 | ||
f7f291e1 PA |
2186 | addr = (unsigned long)iov->iov_base + skip; |
2187 | if (unlikely(is_vmalloc_addr((void *)addr))) { | |
2188 | len = iov->iov_len - skip; | |
2189 | nents += DIV_ROUND_UP(offset_in_page(addr) + len, | |
2190 | PAGE_SIZE); | |
2191 | } else { | |
2192 | nents++; | |
2193 | } | |
89542781 | 2194 | skip = 0; |
f7f291e1 | 2195 | } |
37de5a80 DH |
2196 | if (data_size) |
2197 | nents += iov_iter_npages(&rqst[i].rq_iter, INT_MAX); | |
f7f291e1 PA |
2198 | } |
2199 | nents += DIV_ROUND_UP(offset_in_page(sig) + SMB2_SIGNATURE_SIZE, PAGE_SIZE); | |
2200 | return nents; | |
2201 | } | |
2202 | ||
2203 | /* We can not use the normal sg_set_buf() as we will sometimes pass a | |
2204 | * stack object as buf. | |
2205 | */ | |
d08089f6 DH |
2206 | static inline void cifs_sg_set_buf(struct sg_table *sgtable, |
2207 | const void *buf, | |
2208 | unsigned int buflen) | |
f7f291e1 PA |
2209 | { |
2210 | unsigned long addr = (unsigned long)buf; | |
2211 | unsigned int off = offset_in_page(addr); | |
2212 | ||
2213 | addr &= PAGE_MASK; | |
2214 | if (unlikely(is_vmalloc_addr((void *)addr))) { | |
2215 | do { | |
2216 | unsigned int len = min_t(unsigned int, buflen, PAGE_SIZE - off); | |
2217 | ||
d08089f6 DH |
2218 | sg_set_page(&sgtable->sgl[sgtable->nents++], |
2219 | vmalloc_to_page((void *)addr), len, off); | |
f7f291e1 PA |
2220 | |
2221 | off = 0; | |
2222 | addr += PAGE_SIZE; | |
2223 | buflen -= len; | |
2224 | } while (buflen); | |
2225 | } else { | |
d08089f6 | 2226 | sg_set_page(&sgtable->sgl[sgtable->nents++], |
605a97e8 | 2227 | virt_to_page((void *)addr), buflen, off); |
f7f291e1 | 2228 | } |
f7f291e1 PA |
2229 | } |
2230 | ||
f4e5ceb6 PA |
2231 | struct smb2_compound_vars { |
2232 | struct cifs_open_parms oparms; | |
2233 | struct kvec rsp_iov[3]; | |
2234 | struct smb_rqst rqst[3]; | |
2235 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2236 | struct kvec qi_iov; | |
2237 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
2238 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
2239 | struct kvec close_iov; | |
2240 | struct smb2_file_rename_info rename_info; | |
2241 | struct smb2_file_link_info link_info; | |
2242 | }; | |
2243 | ||
abd2e44d | 2244 | #endif /* _CIFS_GLOB_H */ |