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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> |
2dc7e1c0 | 16 | #include <linux/mempool.h> |
9b646972 | 17 | #include <linux/workqueue.h> |
49bd49f9 | 18 | #include <linux/utsname.h> |
bc899ee1 | 19 | #include <linux/netfs.h> |
1da177e4 | 20 | #include "cifs_fs_sb.h" |
442aa310 | 21 | #include "cifsacl.h" |
d2b91521 SP |
22 | #include <crypto/internal/hash.h> |
23 | #include <linux/scatterlist.h> | |
8c3a2b4c | 24 | #include <uapi/linux/cifs/cifs_mount.h> |
0d35e382 | 25 | #include "../smbfs_common/smb2pdu.h" |
d60622eb | 26 | #include "smb2pdu.h" |
d2b91521 | 27 | |
8d8b26e5 | 28 | #define SMB_PATH_MAX 260 |
e2292430 AA |
29 | #define CIFS_PORT 445 |
30 | #define RFC1001_PORT 139 | |
31 | ||
1da177e4 LT |
32 | /* |
33 | * The sizes of various internal tables and strings | |
34 | */ | |
35 | #define MAX_UID_INFO 16 | |
36 | #define MAX_SES_INFO 2 | |
37 | #define MAX_TCON_INFO 4 | |
38 | ||
cdf1246f | 39 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
40 | |
41 | #define CIFS_MIN_RCV_POOL 4 | |
42 | ||
2c0c2a08 | 43 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
44 | /* |
45 | * default attribute cache timeout (jiffies) | |
46 | */ | |
47 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
48 | ||
49 | /* | |
50 | * max attribute cache timeout (jiffies) - 2^30 | |
51 | */ | |
52 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
53 | ||
ca567eb2 SF |
54 | /* |
55 | * Max persistent and resilient handle timeout (milliseconds). | |
56 | * Windows durable max was 960000 (16 minutes) | |
57 | */ | |
58 | #define SMB3_MAX_HANDLE_TIMEOUT 960000 | |
59 | ||
1da177e4 LT |
60 | /* |
61 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 62 | * on one socket concurrently. |
1da177e4 | 63 | */ |
10b9b98e | 64 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 65 | |
8ecaf67a JL |
66 | #define RFC1001_NAME_LEN 15 |
67 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
68 | ||
b327a717 AA |
69 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
70 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
71 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
72 | ||
adfeb3e0 SF |
73 | /* echo interval in seconds */ |
74 | #define SMB_ECHO_INTERVAL_MIN 1 | |
75 | #define SMB_ECHO_INTERVAL_MAX 600 | |
76 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 77 | |
4ac0536f PA |
78 | /* dns resolution intervals in seconds */ |
79 | #define SMB_DNS_RESOLVE_INTERVAL_MIN 120 | |
506c1da4 SP |
80 | #define SMB_DNS_RESOLVE_INTERVAL_DEFAULT 600 |
81 | ||
b24df3e3 RS |
82 | /* maximum number of PDUs in one compound */ |
83 | #define MAX_COMPOUND 5 | |
84 | ||
141891f4 SF |
85 | /* |
86 | * Default number of credits to keep available for SMB3. | |
87 | * This value is chosen somewhat arbitrarily. The Windows client | |
88 | * defaults to 128 credits, the Windows server allows clients up to | |
89 | * 512 credits (or 8K for later versions), and the NetApp server | |
90 | * does not limit clients at all. Choose a high enough default value | |
91 | * such that the client shouldn't limit performance, but allow mount | |
92 | * to override (until you approach 64K, where we limit credits to 65000 | |
93 | * to reduce possibility of seeing more server credit overflow bugs. | |
94 | */ | |
95 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
96 | ||
1da177e4 LT |
97 | #include "cifspdu.h" |
98 | ||
1da177e4 LT |
99 | #ifndef XATTR_DOS_ATTRIB |
100 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
101 | #endif | |
102 | ||
49bd49f9 SP |
103 | #define CIFS_MAX_WORKSTATION_LEN (__NEW_UTS_LEN + 1) /* reasonable max for client */ |
104 | ||
1da177e4 LT |
105 | /* |
106 | * CIFS vfs client Status information (based on what we know.) | |
107 | */ | |
108 | ||
dd3cd870 | 109 | /* associated with each connection */ |
1da177e4 LT |
110 | enum statusEnum { |
111 | CifsNew = 0, | |
112 | CifsGood, | |
113 | CifsExiting, | |
fd88ce93 | 114 | CifsNeedReconnect, |
73f9bfbe SP |
115 | CifsNeedNegotiate, |
116 | CifsInNegotiate, | |
dd3cd870 SP |
117 | }; |
118 | ||
119 | /* associated with each smb session */ | |
120 | enum ses_status_enum { | |
121 | SES_NEW = 0, | |
122 | SES_GOOD, | |
123 | SES_EXITING, | |
124 | SES_NEED_RECON, | |
125 | SES_IN_SETUP | |
fdf59eb5 SF |
126 | }; |
127 | ||
128 | /* associated with each tree connection to the server */ | |
129 | enum tid_status_enum { | |
130 | TID_NEW = 0, | |
131 | TID_GOOD, | |
132 | TID_EXITING, | |
133 | TID_NEED_RECON, | |
134 | TID_NEED_TCON, | |
135 | TID_IN_TCON, | |
136 | TID_NEED_FILES_INVALIDATE, /* currently unused */ | |
137 | TID_IN_FILES_INVALIDATE | |
1da177e4 LT |
138 | }; |
139 | ||
140 | enum securityEnum { | |
515d82ff | 141 | Unspecified = 0, /* not specified */ |
1da177e4 | 142 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 143 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 144 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
145 | }; |
146 | ||
5f98ca9a | 147 | struct session_key { |
b609f06a | 148 | unsigned int len; |
21e73393 | 149 | char *response; |
b609f06a SF |
150 | }; |
151 | ||
d2b91521 SP |
152 | /* crypto security descriptor definition */ |
153 | struct sdesc { | |
154 | struct shash_desc shash; | |
155 | char ctx[]; | |
156 | }; | |
157 | ||
f7c5445a | 158 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
159 | struct cifs_secmech { |
160 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
161 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 162 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 163 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
5fcd7f3f | 164 | struct crypto_shash *sha512; /* sha512 hash function */ |
d2b91521 SP |
165 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
166 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 167 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 168 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
5fcd7f3f | 169 | struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ |
026e93dc PS |
170 | struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ |
171 | struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ | |
d2b91521 SP |
172 | }; |
173 | ||
d3686d54 | 174 | /* per smb session structure/fields */ |
d2b91521 | 175 | struct ntlmssp_auth { |
5c234aa5 | 176 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
177 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
178 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
179 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 180 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
181 | }; |
182 | ||
442aa310 SF |
183 | struct cifs_cred { |
184 | int uid; | |
185 | int gid; | |
186 | int mode; | |
187 | int cecount; | |
188 | struct cifs_sid osid; | |
189 | struct cifs_sid gsid; | |
190 | struct cifs_ntace *ntaces; | |
191 | struct cifs_ace *aces; | |
192 | }; | |
193 | ||
1da177e4 LT |
194 | /* |
195 | ***************************************************************** | |
196 | * Except the CIFS PDUs themselves all the | |
197 | * globally interesting structs should go here | |
198 | ***************************************************************** | |
199 | */ | |
200 | ||
bf5ea0e2 JL |
201 | /* |
202 | * A smb_rqst represents a complete request to be issued to a server. It's | |
203 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
204 | * to start at the beginning of the first page. | |
205 | */ | |
206 | struct smb_rqst { | |
207 | struct kvec *rq_iov; /* array of kvecs */ | |
208 | unsigned int rq_nvec; /* number of kvecs in array */ | |
209 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
57a929a6 | 210 | unsigned int rq_offset; /* the offset to the 1st page */ |
bf5ea0e2 JL |
211 | unsigned int rq_npages; /* number pages in array */ |
212 | unsigned int rq_pagesz; /* page size to use */ | |
213 | unsigned int rq_tailsz; /* length of last page */ | |
214 | }; | |
215 | ||
121b046a JL |
216 | struct mid_q_entry; |
217 | struct TCP_Server_Info; | |
55157dfb | 218 | struct cifsFileInfo; |
082d0642 | 219 | struct cifs_ses; |
2e6e02ab | 220 | struct cifs_tcon; |
b669f33c | 221 | struct dfs_info3_param; |
1208ef1f | 222 | struct cifs_fattr; |
3fa1c6d1 | 223 | struct smb3_fs_context; |
fb1214e4 | 224 | struct cifs_fid; |
fc9c5966 | 225 | struct cifs_readdata; |
c9de5c80 | 226 | struct cifs_writedata; |
f9c6e234 | 227 | struct cifs_io_parms; |
92fc65a7 | 228 | struct cifs_search_info; |
95a3f2f3 | 229 | struct cifsInodeInfo; |
226730b4 | 230 | struct cifs_open_parms; |
335b7b62 | 231 | struct cifs_credits; |
121b046a | 232 | |
23db65f5 | 233 | struct smb_version_operations { |
fb2036d8 | 234 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 235 | struct mid_q_entry *); |
55157dfb | 236 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 237 | /* setup request: allocate mid, sign message */ |
fec344e3 | 238 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
f780bd3f AA |
239 | struct TCP_Server_Info *, |
240 | struct smb_rqst *); | |
45740847 | 241 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
242 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
243 | struct smb_rqst *); | |
082d0642 PS |
244 | /* check response: verify signature, map error */ |
245 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
246 | bool); | |
335b7b62 PS |
247 | void (*add_credits)(struct TCP_Server_Info *server, |
248 | const struct cifs_credits *credits, | |
249 | const int optype); | |
45275789 | 250 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
251 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
252 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 253 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
c781af7e PS |
254 | void (*revert_current_mid)(struct TCP_Server_Info *server, |
255 | const unsigned int val); | |
eb378711 PS |
256 | /* data offset from read response message */ |
257 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
258 | /* |
259 | * Data length from read response message | |
260 | * When in_remaining is true, the returned data length is in | |
261 | * message field DataRemaining for out-of-band data read (e.g through | |
262 | * Memory Registration RDMA write in SMBD). | |
263 | * Otherwise, the returned data length is in message field DataLength. | |
264 | */ | |
265 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
266 | /* map smb to linux error */ |
267 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
268 | /* find mid corresponding to the response message */ |
269 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 270 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
271 | void (*clear_stats)(struct cifs_tcon *); |
272 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 273 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 274 | /* verify the message */ |
373512ec | 275 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 276 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
04ad69c3 | 277 | int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *); |
9bd45408 PS |
278 | void (*downgrade_oplock)(struct TCP_Server_Info *server, |
279 | struct cifsInodeInfo *cinode, __u32 oplock, | |
280 | unsigned int epoch, bool *purge_cache); | |
316cf94a PS |
281 | /* process transaction2 response */ |
282 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
283 | char *, int); | |
286170aa PS |
284 | /* check if we need to negotiate */ |
285 | bool (*need_neg)(struct TCP_Server_Info *); | |
286 | /* negotiate to the server */ | |
f486ef8e SP |
287 | int (*negotiate)(const unsigned int xid, |
288 | struct cifs_ses *ses, | |
289 | struct TCP_Server_Info *server); | |
24985c53 | 290 | /* set negotiated write size */ |
3fa1c6d1 | 291 | unsigned int (*negotiate_wsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
24985c53 | 292 | /* set negotiated read size */ |
3fa1c6d1 | 293 | unsigned int (*negotiate_rsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
58c45c58 PS |
294 | /* setup smb sessionn */ |
295 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
f486ef8e | 296 | struct TCP_Server_Info *server, |
58c45c58 PS |
297 | const struct nls_table *); |
298 | /* close smb session */ | |
299 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
300 | /* connect to a server share */ |
301 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
302 | struct cifs_tcon *, const struct nls_table *); | |
303 | /* close tree connecion */ | |
304 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
305 | /* get DFS referrals */ |
306 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
307 | const char *, struct dfs_info3_param **, | |
308 | unsigned int *, const struct nls_table *, int); | |
af4281dc | 309 | /* informational QFS call */ |
0f060936 AG |
310 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *, |
311 | struct cifs_sb_info *); | |
68889f26 PS |
312 | /* check if a path is accessible or not */ |
313 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
314 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
315 | /* query path data from the server */ |
316 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
317 | struct cifs_sb_info *, const char *, | |
eb85d94b | 318 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
319 | /* query file data from the server */ |
320 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
321 | struct cifs_fid *, FILE_ALL_INFO *); | |
2e4564b3 SF |
322 | /* query reparse tag from srv to determine which type of special file */ |
323 | int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon, | |
324 | struct cifs_sb_info *cifs_sb, const char *path, | |
325 | __u32 *reparse_tag); | |
1208ef1f PS |
326 | /* get server index number */ |
327 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
328 | struct cifs_sb_info *, const char *, | |
329 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
330 | /* set size by path */ |
331 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
332 | const char *, __u64, struct cifs_sb_info *, bool); | |
333 | /* set size by file handle */ | |
334 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
335 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
336 | /* set attributes */ |
337 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
338 | const unsigned int); | |
64a5cfa6 SF |
339 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
340 | struct cifsFileInfo *); | |
f6d76178 PS |
341 | /* check if we can send an echo or nor */ |
342 | bool (*can_echo)(struct TCP_Server_Info *); | |
343 | /* send echo request */ | |
344 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 345 | /* create directory */ |
bea851b8 SF |
346 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
347 | umode_t mode, struct cifs_tcon *tcon, | |
348 | const char *full_path, | |
349 | struct cifs_sb_info *cifs_sb); | |
c3ca78e2 SF |
350 | int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode, |
351 | struct cifs_tcon *tcon, const char *name, | |
352 | struct cifs_sb_info *sb); | |
f436720e PS |
353 | /* set info on created directory */ |
354 | void (*mkdir_setinfo)(struct inode *, const char *, | |
355 | struct cifs_sb_info *, struct cifs_tcon *, | |
356 | const unsigned int); | |
f958ca5d PS |
357 | /* remove directory */ |
358 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
359 | struct cifs_sb_info *); | |
ed6875e0 PS |
360 | /* unlink file */ |
361 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
362 | struct cifs_sb_info *); | |
363 | /* open, rename and delete file */ | |
364 | int (*rename_pending_delete)(const char *, struct dentry *, | |
365 | const unsigned int); | |
8ceb9843 PS |
366 | /* send rename request */ |
367 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
368 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
369 | /* send create hardlink request */ |
370 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
371 | const char *, const char *, | |
372 | struct cifs_sb_info *); | |
b42bf888 PS |
373 | /* query symlink target */ |
374 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
ebaf546a RS |
375 | struct cifs_sb_info *, const char *, |
376 | char **, bool); | |
fb1214e4 | 377 | /* open a file for non-posix mounts */ |
226730b4 PS |
378 | int (*open)(const unsigned int, struct cifs_open_parms *, |
379 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
380 | /* set fid protocol-specific info */ |
381 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 382 | /* close a file */ |
760ad0ca PS |
383 | void (*close)(const unsigned int, struct cifs_tcon *, |
384 | struct cifs_fid *); | |
43f8a6a7 SF |
385 | /* close a file, returning file attributes and timestamps */ |
386 | void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon, | |
387 | struct cifsFileInfo *pfile_info); | |
1d8c4c00 PS |
388 | /* send a flush request to the server */ |
389 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
390 | /* async read from the server */ |
391 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 392 | /* async write to the server */ |
4a5c80d7 SF |
393 | int (*async_writev)(struct cifs_writedata *, |
394 | void (*release)(struct kref *)); | |
f9c6e234 | 395 | /* sync read from the server */ |
db8b631d | 396 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
397 | struct cifs_io_parms *, unsigned int *, char **, |
398 | int *); | |
ba9ad725 | 399 | /* sync write to the server */ |
db8b631d | 400 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
401 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
402 | unsigned long); | |
92fc65a7 PS |
403 | /* open dir, start readdir */ |
404 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
405 | const char *, struct cifs_sb_info *, | |
406 | struct cifs_fid *, __u16, | |
407 | struct cifs_search_info *); | |
408 | /* continue readdir */ | |
409 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
410 | struct cifs_fid *, | |
411 | __u16, struct cifs_search_info *srch_inf); | |
412 | /* close dir */ | |
413 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
414 | struct cifs_fid *); | |
415 | /* calculate a size of SMB message */ | |
9ec672bd | 416 | unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi); |
66265f13 PS |
417 | /* check for STATUS_PENDING and process the response if yes */ |
418 | bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); | |
511c54a2 PS |
419 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
420 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
421 | /* send oplock break response */ |
422 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
423 | struct cifsInodeInfo *); | |
76ec5e33 PS |
424 | /* query remote filesystem */ |
425 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
0f060936 | 426 | struct cifs_sb_info *, struct kstatfs *); |
d39a4f71 PS |
427 | /* send mandatory brlock to the server */ |
428 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
429 | __u64, __u32, int, int, bool); | |
430 | /* unlock range of mandatory locks */ | |
431 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
432 | const unsigned int); | |
433 | /* push brlocks from the cache to the server */ | |
434 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 435 | /* get lease key of the inode */ |
a41a28bd | 436 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 437 | /* set lease key of the inode */ |
a41a28bd | 438 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 439 | /* generate new lease key */ |
a41a28bd | 440 | void (*new_lease_key)(struct cifs_fid *); |
f486ef8e SP |
441 | int (*generate_signingkey)(struct cifs_ses *ses, |
442 | struct TCP_Server_Info *server); | |
eda1c54f LL |
443 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *, |
444 | bool allocate_crypto); | |
b3152e2c SF |
445 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
446 | struct cifsFileInfo *src_file); | |
834170c8 SF |
447 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
448 | struct cifsFileInfo *src_file, void __user *); | |
d26c2ddd SF |
449 | int (*notify)(const unsigned int xid, struct file *pfile, |
450 | void __user *pbuf); | |
b5be1a1c SP |
451 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
452 | struct cifs_sb_info *, const unsigned char *, | |
453 | char *, unsigned int *); | |
cbb0aba6 SP |
454 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
455 | struct cifs_sb_info *, const unsigned char *, | |
456 | char *, unsigned int *); | |
53ef1016 PS |
457 | /* if we can do cache read operations */ |
458 | bool (*is_read_op)(__u32); | |
459 | /* set oplock level for the inode */ | |
42873b0a PS |
460 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
461 | bool *); | |
a41a28bd | 462 | /* create lease context buffer for CREATE request */ |
729c0c9d | 463 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 464 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 465 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 466 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 467 | struct cifsFileInfo *src_file, |
620d8745 SP |
468 | struct cifsFileInfo *target_file, |
469 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
470 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
471 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
472 | u64 dest_off); | |
ff1c038a | 473 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
474 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
475 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 476 | size_t, struct cifs_sb_info *); |
666753c3 SF |
477 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
478 | const char *, const void *, const __u16, | |
5517554e | 479 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 | 480 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
3970acf7 | 481 | const char *, u32 *, u32); |
42eacf9e | 482 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
3970acf7 | 483 | const struct cifs_fid *, u32 *, u32); |
83e3bc23 SF |
484 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
485 | int); | |
7f6c5008 PS |
486 | /* writepages retry size */ |
487 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
488 | /* get mtu credits */ |
489 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
335b7b62 | 490 | unsigned int *, struct cifs_credits *); |
9a1c67e8 PS |
491 | /* adjust previously taken mtu credits to request size */ |
492 | int (*adjust_credits)(struct TCP_Server_Info *server, | |
493 | struct cifs_credits *credits, | |
494 | const unsigned int payload_size); | |
52755808 PS |
495 | /* check if we need to issue closedir */ |
496 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
497 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
498 | loff_t); | |
7fb8986e | 499 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
500 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
501 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
502 | int (*is_transform_hdr)(void *buf); |
503 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 504 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
505 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
506 | enum securityEnum); | |
8ce79ec3 | 507 | int (*next_header)(char *); |
f5b05d62 RS |
508 | /* ioctl passthrough for query_info */ |
509 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 | 510 | struct cifs_tcon *tcon, |
0f060936 | 511 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 512 | __le16 *path, int is_dir, |
f5b05d62 | 513 | unsigned long p); |
c847dccf AA |
514 | /* make unix special files (block, char, fifo, socket) */ |
515 | int (*make_node)(unsigned int xid, | |
516 | struct inode *inode, | |
517 | struct dentry *dentry, | |
518 | struct cifs_tcon *tcon, | |
55869139 | 519 | const char *full_path, |
c847dccf AA |
520 | umode_t mode, |
521 | dev_t device_number); | |
2f3ebaba RS |
522 | /* version specific fiemap implementation */ |
523 | int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *, | |
524 | struct fiemap_extent_info *, u64, u64); | |
dece44e3 RS |
525 | /* version specific llseek implementation */ |
526 | loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int); | |
8e670f77 RS |
527 | /* Check for STATUS_IO_TIMEOUT */ |
528 | bool (*is_status_io_timeout)(char *buf); | |
9e550b08 RS |
529 | /* Check for STATUS_NETWORK_NAME_DELETED */ |
530 | void (*is_network_name_deleted)(char *buf, struct TCP_Server_Info *srv); | |
23db65f5 JL |
531 | }; |
532 | ||
533 | struct smb_version_values { | |
534 | char *version_string; | |
e4aa25e7 SF |
535 | __u16 protocol_id; |
536 | __u32 req_capabilities; | |
106dc538 PS |
537 | __u32 large_lock_type; |
538 | __u32 exclusive_lock_type; | |
539 | __u32 shared_lock_type; | |
540 | __u32 unlock_lock_type; | |
93012bf9 | 541 | size_t header_preamble_size; |
1887f601 PS |
542 | size_t header_size; |
543 | size_t max_header_size; | |
eb378711 | 544 | size_t read_rsp_size; |
2dc7e1c0 | 545 | __le16 lock_cmd; |
29e20f9c PS |
546 | unsigned int cap_unix; |
547 | unsigned int cap_nt_find; | |
548 | unsigned int cap_large_files; | |
50285882 JL |
549 | __u16 signing_enabled; |
550 | __u16 signing_required; | |
a41a28bd | 551 | size_t create_lease_size; |
23db65f5 JL |
552 | }; |
553 | ||
1887f601 PS |
554 | #define HEADER_SIZE(server) (server->vals->header_size) |
555 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
556 | ||
d070f9dd AA |
557 | /** |
558 | * CIFS superblock mount flags (mnt_cifs_flags) to consider when | |
559 | * trying to reuse existing superblock for a new mount | |
560 | */ | |
25c7f41e PS |
561 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
562 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
563 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 564 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
565 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
566 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
567 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
568 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
569 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 | 570 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
d070f9dd | 571 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ |
6552d6a0 | 572 | CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ |
83bbfa70 | 573 | CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ |
41e033fe | 574 | CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) |
25c7f41e | 575 | |
d070f9dd AA |
576 | /** |
577 | * Generic VFS superblock mount flags (s_flags) to consider when | |
578 | * trying to reuse existing superblock for a new mount | |
579 | */ | |
1751e8a6 LT |
580 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
581 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
582 | |
583 | struct cifs_mnt_data { | |
584 | struct cifs_sb_info *cifs_sb; | |
3fa1c6d1 | 585 | struct smb3_fs_context *ctx; |
25c7f41e PS |
586 | int flags; |
587 | }; | |
588 | ||
792af7b0 PS |
589 | static inline unsigned int |
590 | get_rfc1002_length(void *buf) | |
591 | { | |
dca1c8d1 | 592 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
593 | } |
594 | ||
ec2e4523 PS |
595 | static inline void |
596 | inc_rfc1001_len(void *buf, int count) | |
597 | { | |
598 | be32_add_cpu((__be32 *)buf, count); | |
599 | } | |
600 | ||
1da177e4 | 601 | struct TCP_Server_Info { |
3b795210 SF |
602 | struct list_head tcp_ses_list; |
603 | struct list_head smb_ses_list; | |
6d82c27a | 604 | __u64 conn_id; /* connection identifier (useful for debugging) */ |
e7ddee90 | 605 | int srv_count; /* reference counter */ |
a10faeb2 | 606 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 607 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
608 | struct smb_version_operations *ops; |
609 | struct smb_version_values *vals; | |
080dc5e5 | 610 | /* updates to tcpStatus protected by cifs_tcp_ses_lock */ |
c3dccf48 | 611 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 612 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 613 | struct socket *ssocket; |
a9f1b85e | 614 | struct sockaddr_storage dstaddr; |
3eb9a889 | 615 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
616 | #ifdef CONFIG_NET_NS |
617 | struct net *net; | |
618 | #endif | |
d38d8c74 | 619 | wait_queue_head_t response_q; |
1da177e4 LT |
620 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
621 | struct list_head pending_mid_q; | |
edf1ae40 SF |
622 | bool noblocksnd; /* use blocking sendmsg */ |
623 | bool noautotune; /* do not autotune send buf sizes */ | |
c9f1c19c | 624 | bool nosharesock; |
6a5fa236 | 625 | bool tcp_nodelay; |
141891f4 SF |
626 | unsigned int credits; /* send no more requests at once */ |
627 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 628 | unsigned int in_flight; /* number of requests on the wire to server */ |
1b63f184 | 629 | unsigned int max_in_flight; /* max number of requests that were on wire */ |
2d86dbc9 | 630 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 631 | struct mutex srv_mutex; |
1da177e4 LT |
632 | struct task_struct *tsk; |
633 | char server_GUID[16]; | |
286170aa | 634 | __u16 sec_mode; |
38d77c50 | 635 | bool sign; /* is signing enabled on this connection? */ |
4f5c10f1 | 636 | bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */ |
c3dccf48 | 637 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
638 | int echo_credits; /* echo reserved slots */ |
639 | int oplock_credits; /* oplock break reserved slots */ | |
640 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 641 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 642 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 643 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
644 | unsigned int maxReq; /* Clients should submit no more */ |
645 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 646 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
647 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
648 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
649 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
650 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 651 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
652 | /* message size the server can send or receive for */ |
653 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 654 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 655 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
0fa757b5 | 656 | __u64 CurrentMid; /* multiplex id - rotating counter, protected by GlobalMid_Lock */ |
d3ba50b1 | 657 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 658 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 659 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 660 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 661 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 662 | struct session_key session_key; |
3a5ff61c | 663 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 664 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
665 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ |
666 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
667 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 668 | /* extended security flavors that server supports */ |
c3dccf48 JL |
669 | bool sec_ntlmssp; /* supports NTLMSSP */ |
670 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
671 | bool sec_kerberos; /* supports plain Kerberos */ |
672 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 673 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
674 | /* use SMBD connection instead of socket */ |
675 | bool rdma; | |
676 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
677 | struct smbd_connection *smbd_conn; | |
c74093b6 | 678 | struct delayed_work echo; /* echo ping workqueue job */ |
506c1da4 | 679 | struct delayed_work resolve; /* dns resolution workqueue job */ |
2a37ef94 JL |
680 | char *smallbuf; /* pointer to current "small" buffer */ |
681 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
682 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
683 | unsigned int pdu_size; | |
2a37ef94 | 684 | unsigned int total_read; /* total amount of data read in this pass */ |
1ae9a5a5 SF |
685 | atomic_t in_send; /* requests trying to send */ |
686 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
c3dccf48 | 687 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 | 688 | atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */ |
468d6779 | 689 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
433b8dd7 SF |
690 | __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */ |
691 | __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
692 | __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
468d6779 | 693 | #endif /* STATS2 */ |
ec2e4523 PS |
694 | unsigned int max_read; |
695 | unsigned int max_write; | |
563317ec | 696 | unsigned int min_offload; |
26ea888f | 697 | __le16 compress_algorithm; |
53d31a3f | 698 | __u16 signing_algorithm; |
5100d8a3 | 699 | __le16 cipher_type; |
8bd68c6e AA |
700 | /* save initital negprot hash */ |
701 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
53d31a3f | 702 | bool signing_negotiated; /* true if valid signing context rcvd from server */ |
fcef0db6 | 703 | bool posix_ext_supported; |
53e0e11e PS |
704 | struct delayed_work reconnect; /* reconnect workqueue job */ |
705 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 706 | unsigned long echo_interval; |
93d5cb51 PA |
707 | |
708 | /* | |
709 | * Number of targets available for reconnect. The more targets | |
710 | * the more tasks have to wait to let the demultiplex thread | |
711 | * reconnect. | |
712 | */ | |
713 | int nr_targets; | |
8eecd1c2 | 714 | bool noblockcnt; /* use non-blocking connect() */ |
0f2b305a SP |
715 | |
716 | /* | |
717 | * If this is a session channel, | |
718 | * primary_server holds the ref-counted | |
719 | * pointer to primary channel connection for the session. | |
720 | */ | |
721 | #define CIFS_SERVER_IS_CHAN(server) (!!(server)->primary_server) | |
722 | struct TCP_Server_Info *primary_server; | |
723 | ||
121d947d SC |
724 | #ifdef CONFIG_CIFS_SWN_UPCALL |
725 | bool use_swn_dstaddr; | |
726 | struct sockaddr_storage swn_dstaddr; | |
727 | #endif | |
cdc33630 PA |
728 | #ifdef CONFIG_CIFS_DFS_UPCALL |
729 | bool is_dfs_conn; /* if a dfs connection */ | |
c88f7dcd PA |
730 | struct mutex refpath_lock; /* protects leaf_fullpath */ |
731 | /* | |
732 | * Canonical DFS full paths that were used to chase referrals in mount and reconnect. | |
733 | * | |
734 | * origin_fullpath: first or original referral path | |
735 | * leaf_fullpath: last referral path (might be changed due to nested links in reconnect) | |
736 | * | |
737 | * current_fullpath: pointer to either origin_fullpath or leaf_fullpath | |
738 | * NOTE: cannot be accessed outside cifs_reconnect() and smb2_reconnect() | |
739 | * | |
740 | * format: \\HOST\SHARE\[OPTIONAL PATH] | |
741 | */ | |
742 | char *origin_fullpath, *leaf_fullpath, *current_fullpath; | |
cdc33630 | 743 | #endif |
1da177e4 LT |
744 | }; |
745 | ||
335b7b62 PS |
746 | struct cifs_credits { |
747 | unsigned int value; | |
748 | unsigned int instance; | |
749 | }; | |
750 | ||
fc40f9cf PS |
751 | static inline unsigned int |
752 | in_flight(struct TCP_Server_Info *server) | |
753 | { | |
754 | unsigned int num; | |
755 | spin_lock(&server->req_lock); | |
756 | num = server->in_flight; | |
757 | spin_unlock(&server->req_lock); | |
758 | return num; | |
759 | } | |
760 | ||
2d86dbc9 | 761 | static inline bool |
b227d215 | 762 | has_credits(struct TCP_Server_Info *server, int *credits, int num_credits) |
fc40f9cf | 763 | { |
2d86dbc9 | 764 | int num; |
fc40f9cf | 765 | spin_lock(&server->req_lock); |
bc205ed1 | 766 | num = *credits; |
fc40f9cf | 767 | spin_unlock(&server->req_lock); |
b227d215 | 768 | return num >= num_credits; |
fc40f9cf PS |
769 | } |
770 | ||
45275789 | 771 | static inline void |
34f4deb7 | 772 | add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, |
a891f0f8 | 773 | const int optype) |
45275789 | 774 | { |
34f4deb7 | 775 | server->ops->add_credits(server, credits, optype); |
45275789 PS |
776 | } |
777 | ||
cb7e9eab | 778 | static inline void |
335b7b62 PS |
779 | add_credits_and_wake_if(struct TCP_Server_Info *server, |
780 | const struct cifs_credits *credits, const int optype) | |
cb7e9eab | 781 | { |
335b7b62 PS |
782 | if (credits->value) { |
783 | server->ops->add_credits(server, credits, optype); | |
cb7e9eab PS |
784 | wake_up(&server->request_q); |
785 | } | |
786 | } | |
787 | ||
45275789 PS |
788 | static inline void |
789 | set_credits(struct TCP_Server_Info *server, const int val) | |
790 | { | |
791 | server->ops->set_credits(server, val); | |
792 | } | |
793 | ||
9a1c67e8 PS |
794 | static inline int |
795 | adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, | |
796 | const unsigned int payload_size) | |
797 | { | |
798 | return server->ops->adjust_credits ? | |
799 | server->ops->adjust_credits(server, credits, payload_size) : 0; | |
800 | } | |
801 | ||
9235d098 | 802 | static inline __le64 |
3d378d3f | 803 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 804 | { |
9235d098 | 805 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
806 | } |
807 | ||
3d378d3f TG |
808 | static inline __le16 |
809 | get_next_mid(struct TCP_Server_Info *server) | |
810 | { | |
9235d098 | 811 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
812 | /* |
813 | * The value in the SMB header should be little endian for easy | |
814 | * on-the-wire decoding. | |
815 | */ | |
816 | return cpu_to_le16(mid); | |
817 | } | |
818 | ||
c781af7e PS |
819 | static inline void |
820 | revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
821 | { | |
822 | if (server->ops->revert_current_mid) | |
823 | server->ops->revert_current_mid(server, val); | |
824 | } | |
825 | ||
826 | static inline void | |
827 | revert_current_mid_from_hdr(struct TCP_Server_Info *server, | |
0d35e382 | 828 | const struct smb2_hdr *shdr) |
c781af7e PS |
829 | { |
830 | unsigned int num = le16_to_cpu(shdr->CreditCharge); | |
831 | ||
832 | return revert_current_mid(server, num > 0 ? num : 1); | |
833 | } | |
834 | ||
3d378d3f TG |
835 | static inline __u16 |
836 | get_mid(const struct smb_hdr *smb) | |
837 | { | |
838 | return le16_to_cpu(smb->Mid); | |
839 | } | |
840 | ||
841 | static inline bool | |
842 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
843 | { | |
844 | return mid == le16_to_cpu(smb->Mid); | |
845 | } | |
846 | ||
24985c53 PS |
847 | /* |
848 | * When the server supports very large reads and writes via POSIX extensions, | |
849 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
850 | * including the RFC1001 length. | |
851 | * | |
852 | * Note that this might make for "interesting" allocation problems during | |
853 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 854 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
855 | * |
856 | * For reads, there is a similar problem as we need to allocate an array | |
857 | * of kvecs to handle the receive, though that should only need to be done | |
858 | * once. | |
859 | */ | |
860 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
861 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
862 | ||
863 | /* | |
864 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
865 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
866 | * write up to the maximum size described by RFC1002. | |
867 | */ | |
868 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
869 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
870 | ||
24985c53 PS |
871 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) |
872 | ||
873 | /* | |
874 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
875 | * those values when posix extensions aren't in force. In actuality here, we | |
876 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
877 | * to be ok with the extra byte even though Windows doesn't send writes that | |
878 | * are that large. | |
879 | * | |
880 | * Citation: | |
881 | * | |
cba22b1c | 882 | * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx |
24985c53 PS |
883 | */ |
884 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
885 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
886 | ||
f1d0c998 RL |
887 | /* |
888 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
889 | * when CONFIG_NET_NS isn't set. | |
890 | */ | |
891 | ||
892 | #ifdef CONFIG_NET_NS | |
893 | ||
894 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
895 | { | |
896 | return srv->net; | |
897 | } | |
898 | ||
899 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
900 | { | |
901 | srv->net = net; | |
902 | } | |
903 | ||
904 | #else | |
905 | ||
906 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
907 | { | |
908 | return &init_net; | |
909 | } | |
910 | ||
911 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
912 | { | |
913 | } | |
914 | ||
915 | #endif | |
916 | ||
b6f0dd5d AA |
917 | struct cifs_server_iface { |
918 | size_t speed; | |
919 | unsigned int rdma_capable : 1; | |
920 | unsigned int rss_capable : 1; | |
921 | struct sockaddr_storage sockaddr; | |
922 | }; | |
923 | ||
bcc88801 | 924 | struct cifs_chan { |
5752bf64 | 925 | unsigned int in_reconnect : 1; /* if session setup in progress for this channel */ |
bcc88801 AA |
926 | struct TCP_Server_Info *server; |
927 | __u8 signkey[SMB3_SIGN_KEY_SIZE]; | |
928 | }; | |
929 | ||
1da177e4 LT |
930 | /* |
931 | * Session structure. One of these for each uid session with a particular host | |
932 | */ | |
96daf2b0 | 933 | struct cifs_ses { |
14fbf50d | 934 | struct list_head smb_ses_list; |
3663c904 | 935 | struct list_head rlist; /* reconnect list */ |
3b795210 | 936 | struct list_head tcon_list; |
b327a717 | 937 | struct cifs_tcon *tcon_ipc; |
d7b619cf | 938 | struct mutex session_mutex; |
1da177e4 | 939 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 940 | int ses_count; /* reference counter */ |
dd3cd870 | 941 | enum ses_status_enum ses_status; /* updates protected by cifs_tcp_ses_lock */ |
750d1151 | 942 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
943 | char *serverOS; /* name of operating system underlying server */ |
944 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 945 | char *serverDomain; /* security realm of server */ |
286170aa | 946 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
947 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
948 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 949 | unsigned int capabilities; |
b438fcf1 | 950 | char ip_addr[INET6_ADDRSTRLEN + 1]; /* Max ipv6 (or v4) addr string len */ |
34c87901 SF |
951 | char *user_name; /* must not be null except during init of sess |
952 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
953 | char *domainName; |
954 | char *password; | |
49bd49f9 | 955 | char *workstation_name; |
5d0d2882 | 956 | struct session_key auth_key; |
d3686d54 | 957 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
958 | enum securityEnum sectype; /* what security flavor was specified? */ |
959 | bool sign; /* is signing required? */ | |
39566443 | 960 | bool domainAuto:1; |
5478f9ba | 961 | __u16 session_flags; |
373512ec | 962 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
45a4546c SP |
963 | __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE]; |
964 | __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE]; | |
8bd68c6e | 965 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d AA |
966 | |
967 | /* | |
968 | * Network interfaces available on the server this session is | |
969 | * connected to. | |
970 | * | |
971 | * Other channels can be opened by connecting and binding this | |
972 | * session to interfaces from this list. | |
973 | * | |
974 | * iface_lock should be taken when accessing any of these fields | |
975 | */ | |
976 | spinlock_t iface_lock; | |
724244cd | 977 | /* ========= begin: protected by iface_lock ======== */ |
b6f0dd5d AA |
978 | struct cifs_server_iface *iface_list; |
979 | size_t iface_count; | |
980 | unsigned long iface_last_update; /* jiffies */ | |
724244cd | 981 | /* ========= end: protected by iface_lock ======== */ |
bcc88801 | 982 | |
724244cd SP |
983 | spinlock_t chan_lock; |
984 | /* ========= begin: protected by chan_lock ======== */ | |
bcc88801 | 985 | #define CIFS_MAX_CHANNELS 16 |
d1a931ce SP |
986 | #define CIFS_ALL_CHANNELS_SET(ses) \ |
987 | ((1UL << (ses)->chan_count) - 1) | |
5752bf64 SP |
988 | #define CIFS_ALL_CHANS_GOOD(ses) \ |
989 | (!(ses)->chans_need_reconnect) | |
d1a931ce SP |
990 | #define CIFS_ALL_CHANS_NEED_RECONNECT(ses) \ |
991 | ((ses)->chans_need_reconnect == CIFS_ALL_CHANNELS_SET(ses)) | |
183eea2e SP |
992 | #define CIFS_SET_ALL_CHANS_NEED_RECONNECT(ses) \ |
993 | ((ses)->chans_need_reconnect = CIFS_ALL_CHANNELS_SET(ses)) | |
d1a931ce SP |
994 | #define CIFS_CHAN_NEEDS_RECONNECT(ses, index) \ |
995 | test_bit((index), &(ses)->chans_need_reconnect) | |
5752bf64 SP |
996 | #define CIFS_CHAN_IN_RECONNECT(ses, index) \ |
997 | ((ses)->chans[(index)].in_reconnect) | |
d1a931ce | 998 | |
bcc88801 AA |
999 | struct cifs_chan chans[CIFS_MAX_CHANNELS]; |
1000 | size_t chan_count; | |
1001 | size_t chan_max; | |
1002 | atomic_t chan_seq; /* round robin state */ | |
d1a931ce SP |
1003 | |
1004 | /* | |
1005 | * chans_need_reconnect is a bitmap indicating which of the channels | |
1006 | * under this smb session needs to be reconnected. | |
1007 | * If not multichannel session, only one bit will be used. | |
f486ef8e SP |
1008 | * |
1009 | * We will ask for sess and tcon reconnection only if all the | |
1010 | * channels are marked for needing reconnection. This will | |
1011 | * enable the sessions on top to continue to live till any | |
1012 | * of the channels below are active. | |
d1a931ce SP |
1013 | */ |
1014 | unsigned long chans_need_reconnect; | |
724244cd | 1015 | /* ========= end: protected by chan_lock ======== */ |
1da177e4 | 1016 | }; |
233839b1 | 1017 | |
29e20f9c PS |
1018 | static inline bool |
1019 | cap_unix(struct cifs_ses *ses) | |
1020 | { | |
1021 | return ses->server->vals->cap_unix & ses->capabilities; | |
1022 | } | |
1023 | ||
f695b289 RS |
1024 | /* |
1025 | * common struct for holding inode info when searching for or updating an | |
1026 | * inode with new info | |
1027 | */ | |
1028 | ||
1029 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
1030 | #define CIFS_FATTR_DELETE_PENDING 0x2 | |
1031 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
1032 | #define CIFS_FATTR_INO_COLLISION 0x8 | |
1033 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 | |
1034 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 | |
1035 | ||
1036 | struct cifs_fattr { | |
1037 | u32 cf_flags; | |
1038 | u32 cf_cifsattrs; | |
1039 | u64 cf_uniqueid; | |
1040 | u64 cf_eof; | |
1041 | u64 cf_bytes; | |
1042 | u64 cf_createtime; | |
1043 | kuid_t cf_uid; | |
1044 | kgid_t cf_gid; | |
1045 | umode_t cf_mode; | |
1046 | dev_t cf_rdev; | |
1047 | unsigned int cf_nlink; | |
1048 | unsigned int cf_dtype; | |
1049 | struct timespec64 cf_atime; | |
1050 | struct timespec64 cf_mtime; | |
1051 | struct timespec64 cf_ctime; | |
1052 | u32 cf_cifstag; | |
1053 | }; | |
1054 | ||
d87c48ce RS |
1055 | struct cached_dirent { |
1056 | struct list_head entry; | |
1057 | char *name; | |
1058 | int namelen; | |
1059 | loff_t pos; | |
1060 | ||
1061 | struct cifs_fattr fattr; | |
1062 | }; | |
1063 | ||
1064 | struct cached_dirents { | |
1065 | bool is_valid:1; | |
1066 | bool is_failed:1; | |
1067 | struct dir_context *ctx; /* | |
1068 | * Only used to make sure we only take entries | |
1069 | * from a single context. Never dereferenced. | |
1070 | */ | |
1071 | struct mutex de_mutex; | |
1072 | int pos; /* Expected ctx->pos */ | |
1073 | struct list_head entries; | |
1074 | }; | |
1075 | ||
a93864d9 RS |
1076 | struct cached_fid { |
1077 | bool is_valid:1; /* Do we have a useable root fid */ | |
b0f6df73 | 1078 | bool file_all_info_is_valid:1; |
d9191319 | 1079 | bool has_lease:1; |
ed20f54a | 1080 | unsigned long time; /* jiffies of when lease was taken */ |
9da6ec77 | 1081 | struct kref refcount; |
a93864d9 RS |
1082 | struct cifs_fid *fid; |
1083 | struct mutex fid_mutex; | |
1084 | struct cifs_tcon *tcon; | |
5e9c89d4 | 1085 | struct dentry *dentry; |
a93864d9 | 1086 | struct work_struct lease_break; |
b0f6df73 | 1087 | struct smb2_file_all_info file_all_info; |
d87c48ce | 1088 | struct cached_dirents dirents; |
a93864d9 RS |
1089 | }; |
1090 | ||
1da177e4 LT |
1091 | /* |
1092 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 1093 | * session |
1da177e4 | 1094 | */ |
96daf2b0 | 1095 | struct cifs_tcon { |
f1987b44 JL |
1096 | struct list_head tcon_list; |
1097 | int tc_count; | |
53e0e11e | 1098 | struct list_head rlist; /* reconnect list */ |
fae8044c SF |
1099 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
1100 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 1101 | struct list_head openFileList; |
3afca265 | 1102 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 1103 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 1104 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 1105 | char *nativeFileSystem; |
00e485b0 | 1106 | char *password; /* for share-level security */ |
faaf946a | 1107 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 | 1108 | __u16 Flags; /* optional support bits */ |
fdf59eb5 | 1109 | enum tid_status_enum status; |
1da177e4 | 1110 | atomic_t num_smbs_sent; |
44c58186 PS |
1111 | union { |
1112 | struct { | |
1113 | atomic_t num_writes; | |
1114 | atomic_t num_reads; | |
1115 | atomic_t num_flushes; | |
1116 | atomic_t num_oplock_brks; | |
1117 | atomic_t num_opens; | |
1118 | atomic_t num_closes; | |
1119 | atomic_t num_deletes; | |
1120 | atomic_t num_mkdirs; | |
1121 | atomic_t num_posixopens; | |
1122 | atomic_t num_posixmkdirs; | |
1123 | atomic_t num_rmdirs; | |
1124 | atomic_t num_renames; | |
1125 | atomic_t num_t2renames; | |
1126 | atomic_t num_ffirst; | |
1127 | atomic_t num_fnext; | |
1128 | atomic_t num_fclose; | |
1129 | atomic_t num_hardlinks; | |
1130 | atomic_t num_symlinks; | |
1131 | atomic_t num_locks; | |
1132 | atomic_t num_acl_get; | |
1133 | atomic_t num_acl_set; | |
1134 | } cifs_stats; | |
d60622eb PS |
1135 | struct { |
1136 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
1137 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
1138 | } smb2_stats; | |
44c58186 | 1139 | } stats; |
1da177e4 LT |
1140 | __u64 bytes_read; |
1141 | __u64 bytes_written; | |
3afca265 | 1142 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 1143 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 1144 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 1145 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
1146 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
1147 | bool pipe:1; /* set if connection to pipe share */ | |
1148 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
1149 | bool retry:1; |
1150 | bool nocase:1; | |
3d4ef9a1 | 1151 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
82e9367c | 1152 | bool nodelete:1; |
95b1cb90 | 1153 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 1154 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 1155 | for this mount even if server would support */ |
b326614e | 1156 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 1157 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1158 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1159 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1160 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1161 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1162 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1163 | bool use_persistent:1; /* use persistent instead of durable handles */ |
3e7a02d4 | 1164 | bool no_lease:1; /* Do not request leases on files or directories */ |
b7fd0fa0 | 1165 | bool use_witness:1; /* use witness protocol */ |
769ee6a4 | 1166 | __le32 capabilities; |
faaf946a PS |
1167 | __u32 share_flags; |
1168 | __u32 maximal_access; | |
1169 | __u32 vol_serial_number; | |
1170 | __le64 vol_create_time; | |
8b217fe7 | 1171 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
ca567eb2 | 1172 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
af6a12ea SF |
1173 | __u32 ss_flags; /* sector size flags */ |
1174 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1175 | __u32 max_chunks; |
1176 | __u32 max_bytes_chunk; | |
1177 | __u32 max_bytes_copy; | |
d03382ce SJ |
1178 | #ifdef CONFIG_CIFS_FSCACHE |
1179 | u64 resource_id; /* server resource id */ | |
70431bfd | 1180 | struct fscache_volume *fscache; /* cookie for share */ |
d03382ce | 1181 | #endif |
233839b1 | 1182 | struct list_head pending_opens; /* list of incomplete opens */ |
a93864d9 | 1183 | struct cached_fid crfid; /* Cached root fid */ |
c18c842b | 1184 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c | 1185 | #ifdef CONFIG_CIFS_DFS_UPCALL |
54be1f6c PA |
1186 | struct list_head ulist; /* cache update list */ |
1187 | #endif | |
1da177e4 LT |
1188 | }; |
1189 | ||
7ffec372 JL |
1190 | /* |
1191 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1192 | * container holds a tcon reference. It is considered safe to free one of | |
1193 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1194 | * "get" on the container. | |
1195 | */ | |
1196 | struct tcon_link { | |
b647c35f | 1197 | struct rb_node tl_rbnode; |
6d4a0832 | 1198 | kuid_t tl_uid; |
9d002df4 JL |
1199 | unsigned long tl_flags; |
1200 | #define TCON_LINK_MASTER 0 | |
1201 | #define TCON_LINK_PENDING 1 | |
1202 | #define TCON_LINK_IN_TREE 2 | |
1203 | unsigned long tl_time; | |
1204 | atomic_t tl_count; | |
96daf2b0 | 1205 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1206 | }; |
1207 | ||
9d002df4 | 1208 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1209 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1210 | |
96daf2b0 | 1211 | static inline struct cifs_tcon * |
7ffec372 JL |
1212 | tlink_tcon(struct tcon_link *tlink) |
1213 | { | |
9d002df4 | 1214 | return tlink->tl_tcon; |
7ffec372 JL |
1215 | } |
1216 | ||
8ddecf5f AA |
1217 | static inline struct tcon_link * |
1218 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1219 | { | |
1220 | return cifs_sb->master_tlink; | |
1221 | } | |
1222 | ||
9d002df4 | 1223 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1224 | |
13cfb733 JL |
1225 | static inline struct tcon_link * |
1226 | cifs_get_tlink(struct tcon_link *tlink) | |
1227 | { | |
9d002df4 JL |
1228 | if (tlink && !IS_ERR(tlink)) |
1229 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1230 | return tlink; |
1231 | } | |
1232 | ||
7ffec372 | 1233 | /* This function is always expected to succeed */ |
96daf2b0 | 1234 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1235 | |
233839b1 PS |
1236 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1237 | ||
1238 | struct cifs_pending_open { | |
1239 | struct list_head olist; | |
1240 | struct tcon_link *tlink; | |
1241 | __u8 lease_key[16]; | |
1242 | __u32 oplock; | |
1243 | }; | |
1244 | ||
c3f207ab RS |
1245 | struct cifs_deferred_close { |
1246 | struct list_head dlist; | |
1247 | struct tcon_link *tlink; | |
1248 | __u16 netfid; | |
1249 | __u64 persistent_fid; | |
1250 | __u64 volatile_fid; | |
1251 | }; | |
1252 | ||
1da177e4 | 1253 | /* |
7ee1af76 JA |
1254 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1255 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1256 | */ |
1257 | struct cifsLockInfo { | |
7ee1af76 | 1258 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1259 | struct list_head blist; /* pointer to locks blocked on this */ |
1260 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1261 | __u64 offset; |
1262 | __u64 length; | |
03776f45 | 1263 | __u32 pid; |
9645759c RS |
1264 | __u16 type; |
1265 | __u16 flags; | |
1da177e4 LT |
1266 | }; |
1267 | ||
1268 | /* | |
1269 | * One of these for each open instance of a file | |
1270 | */ | |
1271 | struct cifs_search_info { | |
1272 | loff_t index_of_last_entry; | |
1273 | __u16 entries_in_buffer; | |
1274 | __u16 info_level; | |
1275 | __u32 resume_key; | |
d38d8c74 SF |
1276 | char *ntwrk_buf_start; |
1277 | char *srch_entries_start; | |
0752f152 | 1278 | char *last_entry; |
eaf35b1e | 1279 | const char *presume_name; |
1da177e4 | 1280 | unsigned int resume_name_len; |
4b18f2a9 SF |
1281 | bool endOfSearch:1; |
1282 | bool emptyDir:1; | |
1283 | bool unicode:1; | |
1284 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1285 | }; |
1286 | ||
d0959b08 | 1287 | #define ACL_NO_MODE ((umode_t)(-1)) |
226730b4 PS |
1288 | struct cifs_open_parms { |
1289 | struct cifs_tcon *tcon; | |
1290 | struct cifs_sb_info *cifs_sb; | |
1291 | int disposition; | |
1292 | int desired_access; | |
1293 | int create_options; | |
1294 | const char *path; | |
1295 | struct cifs_fid *fid; | |
ce558b0e | 1296 | umode_t mode; |
9cbc0b73 | 1297 | bool reconnect:1; |
226730b4 PS |
1298 | }; |
1299 | ||
4b4de76e PS |
1300 | struct cifs_fid { |
1301 | __u16 netfid; | |
f0df737e PS |
1302 | __u64 persistent_fid; /* persist file id for smb2 */ |
1303 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1304 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1305 | __u8 create_guid[16]; |
86f740f2 | 1306 | __u32 access; |
233839b1 | 1307 | struct cifs_pending_open *pending_open; |
42873b0a | 1308 | unsigned int epoch; |
dfe33f9a SF |
1309 | #ifdef CONFIG_CIFS_DEBUG2 |
1310 | __u64 mid; | |
1311 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1312 | bool purge_cache; |
4b4de76e PS |
1313 | }; |
1314 | ||
f45d3416 PS |
1315 | struct cifs_fid_locks { |
1316 | struct list_head llist; | |
1317 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1318 | struct list_head locks; /* locks held by fid above */ | |
1319 | }; | |
1320 | ||
1da177e4 | 1321 | struct cifsFileInfo { |
3afca265 | 1322 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1323 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1324 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1325 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1326 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1327 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1328 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1329 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1330 | struct list_head rlist; /* reconnect list */ |
1da177e4 LT |
1331 | /* BB add lock scope info here if needed */ ; |
1332 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1333 | struct dentry *dentry; |
13cfb733 | 1334 | struct tcon_link *tlink; |
3afca265 | 1335 | unsigned int f_flags; |
4b18f2a9 | 1336 | bool invalidHandle:1; /* file closed via session abend */ |
4e8aea30 | 1337 | bool swapfile:1; |
3bc303c2 | 1338 | bool oplock_break_cancelled:1; |
9bd45408 PS |
1339 | unsigned int oplock_epoch; /* epoch from the lease break */ |
1340 | __u32 oplock_level; /* oplock/lease level from the lease break */ | |
3afca265 SF |
1341 | int count; |
1342 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1343 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1344 | struct cifs_search_info srch_inf; |
9b646972 | 1345 | struct work_struct oplock_break; /* work for oplock breaks */ |
32546a95 | 1346 | struct work_struct put; /* work for the final part of _put */ |
c3f207ab | 1347 | struct delayed_work deferred; |
860b69a9 | 1348 | bool deferred_close_scheduled; /* Flag to indicate close is scheduled */ |
1da177e4 LT |
1349 | }; |
1350 | ||
fa2989f4 PS |
1351 | struct cifs_io_parms { |
1352 | __u16 netfid; | |
09a4707e PS |
1353 | __u64 persistent_fid; /* persist file id for smb2 */ |
1354 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1355 | __u32 pid; |
1356 | __u64 offset; | |
1357 | unsigned int length; | |
96daf2b0 | 1358 | struct cifs_tcon *tcon; |
352d96f3 | 1359 | struct TCP_Server_Info *server; |
fa2989f4 PS |
1360 | }; |
1361 | ||
ccf7f408 PS |
1362 | struct cifs_aio_ctx { |
1363 | struct kref refcount; | |
1364 | struct list_head list; | |
1365 | struct mutex aio_mutex; | |
1366 | struct completion done; | |
1367 | struct iov_iter iter; | |
1368 | struct kiocb *iocb; | |
1369 | struct cifsFileInfo *cfile; | |
1370 | struct bio_vec *bv; | |
c610c4b6 | 1371 | loff_t pos; |
ccf7f408 PS |
1372 | unsigned int npages; |
1373 | ssize_t rc; | |
1374 | unsigned int len; | |
1375 | unsigned int total_len; | |
1376 | bool should_dirty; | |
6e6e2b86 LL |
1377 | /* |
1378 | * Indicates if this aio_ctx is for direct_io, | |
1379 | * If yes, iter is a copy of the user passed iov_iter | |
1380 | */ | |
1381 | bool direct_io; | |
ccf7f408 PS |
1382 | }; |
1383 | ||
09a4707e PS |
1384 | /* asynchronous read support */ |
1385 | struct cifs_readdata { | |
1386 | struct kref refcount; | |
1387 | struct list_head list; | |
1388 | struct completion done; | |
1389 | struct cifsFileInfo *cfile; | |
1390 | struct address_space *mapping; | |
6685c5e2 | 1391 | struct cifs_aio_ctx *ctx; |
09a4707e PS |
1392 | __u64 offset; |
1393 | unsigned int bytes; | |
34a54d61 | 1394 | unsigned int got_bytes; |
09a4707e PS |
1395 | pid_t pid; |
1396 | int result; | |
09a4707e | 1397 | struct work_struct work; |
8321fec4 JL |
1398 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1399 | struct cifs_readdata *rdata, | |
1400 | unsigned int len); | |
d70b9104 PS |
1401 | int (*copy_into_pages)(struct TCP_Server_Info *server, |
1402 | struct cifs_readdata *rdata, | |
1403 | struct iov_iter *iter); | |
738f9de5 | 1404 | struct kvec iov[2]; |
352d96f3 | 1405 | struct TCP_Server_Info *server; |
74dcf418 LL |
1406 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1407 | struct smbd_mr *mr; | |
1408 | #endif | |
8321fec4 | 1409 | unsigned int pagesz; |
57a929a6 | 1410 | unsigned int page_offset; |
8321fec4 | 1411 | unsigned int tailsz; |
335b7b62 | 1412 | struct cifs_credits credits; |
c5fab6f4 | 1413 | unsigned int nr_pages; |
f9f5aca1 | 1414 | struct page **pages; |
09a4707e PS |
1415 | }; |
1416 | ||
33319141 PS |
1417 | /* asynchronous write support */ |
1418 | struct cifs_writedata { | |
1419 | struct kref refcount; | |
1420 | struct list_head list; | |
1421 | struct completion done; | |
1422 | enum writeback_sync_modes sync_mode; | |
1423 | struct work_struct work; | |
1424 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1425 | struct cifs_aio_ctx *ctx; |
33319141 PS |
1426 | __u64 offset; |
1427 | pid_t pid; | |
1428 | unsigned int bytes; | |
1429 | int result; | |
352d96f3 | 1430 | struct TCP_Server_Info *server; |
db223a59 LL |
1431 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1432 | struct smbd_mr *mr; | |
1433 | #endif | |
eddb079d | 1434 | unsigned int pagesz; |
57a929a6 | 1435 | unsigned int page_offset; |
eddb079d | 1436 | unsigned int tailsz; |
335b7b62 | 1437 | struct cifs_credits credits; |
33319141 | 1438 | unsigned int nr_pages; |
8e7360f6 | 1439 | struct page **pages; |
33319141 PS |
1440 | }; |
1441 | ||
5f6dbc9e JL |
1442 | /* |
1443 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1444 | * cfile->file_info_lock held. |
5f6dbc9e | 1445 | */ |
764a1b1a JL |
1446 | static inline void |
1447 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1448 | { |
5f6dbc9e | 1449 | ++cifs_file->count; |
6ab409b5 DK |
1450 | } |
1451 | ||
764a1b1a | 1452 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
32546a95 RS |
1453 | void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr, |
1454 | bool offload); | |
b33879aa | 1455 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1456 | |
18cceb6a PS |
1457 | #define CIFS_CACHE_READ_FLG 1 |
1458 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1459 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1460 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1461 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1462 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a | 1463 | |
83bbfa70 | 1464 | #define CIFS_CACHE_READ(cinode) ((cinode->oplock & CIFS_CACHE_READ_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)) |
53ef1016 | 1465 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
41e033fe | 1466 | #define CIFS_CACHE_WRITE(cinode) ((cinode->oplock & CIFS_CACHE_WRITE_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)) |
18cceb6a | 1467 | |
1da177e4 LT |
1468 | /* |
1469 | * One of these for each file inode | |
1470 | */ | |
1471 | ||
1472 | struct cifsInodeInfo { | |
bc899ee1 DH |
1473 | struct { |
1474 | /* These must be contiguous */ | |
1475 | struct inode vfs_inode; /* the VFS's inode record */ | |
1476 | struct netfs_i_context netfs_ctx; /* Netfslib context */ | |
1477 | }; | |
d59dad2b | 1478 | bool can_cache_brlcks; |
f45d3416 | 1479 | struct list_head llist; /* locks helb by this inode */ |
d46b0da7 DW |
1480 | /* |
1481 | * NOTE: Some code paths call down_read(lock_sem) twice, so | |
a03f507d | 1482 | * we must always use cifs_down_write() instead of down_write() |
d46b0da7 DW |
1483 | * for this semaphore to avoid deadlocks. |
1484 | */ | |
1b4b55a1 | 1485 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1486 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1487 | struct list_head openFileList; |
487317c9 | 1488 | spinlock_t open_file_lock; /* protects openFileList */ |
1da177e4 | 1489 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1490 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1491 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1492 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1493 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
9bd45408 | 1494 | #define CIFS_INODE_FLAG_UNUSED (2) /* Unused flag */ |
aff8d5ca JL |
1495 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1496 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1497 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
c3f207ab | 1498 | #define CIFS_INO_MODIFIED_ATTR (6) /* Indicate change in mtime/ctime */ |
35866f3f | 1499 | #define CIFS_INO_CLOSE_ON_LOCK (7) /* Not to defer the close when lock is set */ |
aff8d5ca | 1500 | unsigned long flags; |
c11f1df5 SP |
1501 | spinlock_t writers_lock; |
1502 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1503 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1504 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1505 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1506 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1507 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
c3f207ab RS |
1508 | struct list_head deferred_closes; /* list of deferred closes */ |
1509 | spinlock_t deferred_lock; /* protection on deferred list */ | |
0ab95c25 | 1510 | bool lease_granted; /* Flag to indicate whether lease or oplock is granted. */ |
1da177e4 LT |
1511 | }; |
1512 | ||
1513 | static inline struct cifsInodeInfo * | |
1514 | CIFS_I(struct inode *inode) | |
1515 | { | |
1516 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1517 | } | |
1518 | ||
1519 | static inline struct cifs_sb_info * | |
1520 | CIFS_SB(struct super_block *sb) | |
1521 | { | |
1522 | return sb->s_fs_info; | |
1523 | } | |
1524 | ||
7119e220 AV |
1525 | static inline struct cifs_sb_info * |
1526 | CIFS_FILE_SB(struct file *file) | |
1527 | { | |
1528 | return CIFS_SB(file_inode(file)->i_sb); | |
1529 | } | |
1530 | ||
ab2f218f | 1531 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1532 | { |
1533 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1534 | return '/'; | |
1535 | else | |
1536 | return '\\'; | |
1537 | } | |
1da177e4 | 1538 | |
f87d39d9 SF |
1539 | static inline void |
1540 | convert_delimiter(char *path, char delim) | |
1541 | { | |
1cc9bd68 | 1542 | char old_delim, *pos; |
f87d39d9 SF |
1543 | |
1544 | if (delim == '/') | |
1545 | old_delim = '\\'; | |
1546 | else | |
1547 | old_delim = '/'; | |
1548 | ||
1cc9bd68 SF |
1549 | pos = path; |
1550 | while ((pos = strchr(pos, old_delim))) | |
1551 | *pos = delim; | |
f87d39d9 SF |
1552 | } |
1553 | ||
a4544347 SF |
1554 | #define cifs_stats_inc atomic_inc |
1555 | ||
96daf2b0 | 1556 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1557 | unsigned int bytes) |
1558 | { | |
1559 | if (bytes) { | |
1560 | spin_lock(&tcon->stat_lock); | |
1561 | tcon->bytes_written += bytes; | |
1562 | spin_unlock(&tcon->stat_lock); | |
1563 | } | |
1564 | } | |
1565 | ||
96daf2b0 | 1566 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1567 | unsigned int bytes) |
1568 | { | |
1569 | spin_lock(&tcon->stat_lock); | |
1570 | tcon->bytes_read += bytes; | |
1571 | spin_unlock(&tcon->stat_lock); | |
1572 | } | |
a4544347 | 1573 | |
2b84a36c JL |
1574 | |
1575 | /* | |
44d22d84 JL |
1576 | * This is the prototype for the mid receive function. This function is for |
1577 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1578 | * just after the MID in struct smb_hdr). Note: | |
1579 | * | |
1580 | * - This will be called by cifsd, with no locks held. | |
1581 | * - The mid will still be on the pending_mid_q. | |
1582 | * - mid->resp_buf will point to the current buffer. | |
1583 | * | |
1584 | * Returns zero on a successful receive, or an error. The receive state in | |
1585 | * the TCP_Server_Info will also be updated. | |
1586 | */ | |
1587 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1588 | struct mid_q_entry *mid); | |
1589 | ||
1590 | /* | |
1591 | * This is the prototype for the mid callback function. This is called once the | |
1592 | * mid has been received off of the socket. When creating one, take special | |
1593 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1594 | * |
3c1105df JL |
1595 | * - it will be called by cifsd, with no locks held |
1596 | * - the mid will be removed from any lists | |
2b84a36c JL |
1597 | */ |
1598 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1599 | ||
9b7c18a2 PS |
1600 | /* |
1601 | * This is the protopyte for mid handle function. This is called once the mid | |
1602 | * has been recognized after decryption of the message. | |
1603 | */ | |
1604 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1605 | struct mid_q_entry *mid); | |
1606 | ||
1da177e4 LT |
1607 | /* one of these for every pending CIFS request to the server */ |
1608 | struct mid_q_entry { | |
1609 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1610 | struct kref refcount; |
2dc7e1c0 | 1611 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 | 1612 | __u64 mid; /* multiplex id */ |
c781af7e | 1613 | __u16 credits; /* number of credits consumed by this mid */ |
86a7964b | 1614 | __u16 credits_received; /* number of credits from the response */ |
7c9421e1 | 1615 | __u32 pid; /* process id */ |
1da177e4 | 1616 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1617 | unsigned long when_alloc; /* when mid was created */ |
1618 | #ifdef CONFIG_CIFS_STATS2 | |
1619 | unsigned long when_sent; /* time when smb send finished */ | |
1620 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1621 | #endif | |
44d22d84 | 1622 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1623 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1624 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1625 | void *callback_data; /* general purpose pointer for callback */ |
f1f27ad7 | 1626 | struct task_struct *creator; |
d4e4854f | 1627 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1628 | unsigned int resp_buf_size; |
7c9421e1 | 1629 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1630 | unsigned int mid_flags; |
7c9421e1 | 1631 | __le16 command; /* smb command code */ |
8a26f0f7 | 1632 | unsigned int optype; /* operation type */ |
7c9421e1 | 1633 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1634 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1635 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1636 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1637 | }; |
1638 | ||
38bd4906 SP |
1639 | struct close_cancelled_open { |
1640 | struct cifs_fid fid; | |
1641 | struct cifs_tcon *tcon; | |
1642 | struct work_struct work; | |
87bc2376 RS |
1643 | __u64 mid; |
1644 | __u16 cmd; | |
38bd4906 SP |
1645 | }; |
1646 | ||
789e6661 SF |
1647 | /* Make code in transport.c a little cleaner by moving |
1648 | update of optional stats into function below */ | |
789e6661 SF |
1649 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
1650 | { | |
1651 | atomic_inc(&server->in_send); | |
1652 | } | |
1653 | ||
1654 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1655 | { | |
1656 | atomic_dec(&server->in_send); | |
1657 | } | |
1658 | ||
1659 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1660 | { | |
1661 | atomic_inc(&server->num_waiters); | |
1662 | } | |
1663 | ||
1664 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1665 | { | |
1666 | atomic_dec(&server->num_waiters); | |
1667 | } | |
1668 | ||
1ae9a5a5 | 1669 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 SF |
1670 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1671 | { | |
1672 | mid->when_sent = jiffies; | |
1673 | } | |
1674 | #else | |
789e6661 SF |
1675 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1676 | { | |
1677 | } | |
1678 | #endif | |
1da177e4 | 1679 | |
ff5dbd9e SF |
1680 | /* for pending dnotify requests */ |
1681 | struct dir_notify_req { | |
13cd4b7f SF |
1682 | struct list_head lhead; |
1683 | __le16 Pid; | |
1684 | __le16 PidHigh; | |
1685 | __u16 Mid; | |
1686 | __u16 Tid; | |
1687 | __u16 Uid; | |
1688 | __u16 netfid; | |
1689 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1690 | int multishot; | |
1691 | struct file *pfile; | |
ff5dbd9e SF |
1692 | }; |
1693 | ||
366781c1 SF |
1694 | struct dfs_info3_param { |
1695 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1696 | int path_consumed; |
366781c1 SF |
1697 | int server_type; |
1698 | int ref_flag; | |
1699 | char *path_name; | |
1700 | char *node_name; | |
e7b602f4 | 1701 | int ttl; |
366781c1 SF |
1702 | }; |
1703 | ||
9e992755 RS |
1704 | struct file_list { |
1705 | struct list_head list; | |
1706 | struct cifsFileInfo *cfile; | |
1707 | }; | |
1708 | ||
366781c1 SF |
1709 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1710 | { | |
1711 | if (param) { | |
1712 | kfree(param->path_name); | |
1713 | kfree(param->node_name); | |
366781c1 SF |
1714 | } |
1715 | } | |
1716 | ||
1717 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1718 | int number_of_items) | |
1719 | { | |
1720 | int i; | |
1721 | if ((number_of_items == 0) || (param == NULL)) | |
1722 | return; | |
1723 | for (i = 0; i < number_of_items; i++) { | |
1724 | kfree(param[i].path_name); | |
1725 | kfree(param[i].node_name); | |
1726 | } | |
1727 | kfree(param); | |
1728 | } | |
1729 | ||
9a66396f PS |
1730 | static inline bool is_interrupt_error(int error) |
1731 | { | |
1732 | switch (error) { | |
1733 | case -EINTR: | |
1734 | case -ERESTARTSYS: | |
1735 | case -ERESTARTNOHAND: | |
1736 | case -ERESTARTNOINTR: | |
1737 | return true; | |
1738 | } | |
1739 | return false; | |
1740 | } | |
1741 | ||
1742 | static inline bool is_retryable_error(int error) | |
1743 | { | |
1744 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1745 | return true; | |
1746 | return false; | |
1747 | } | |
1748 | ||
86f740f2 AA |
1749 | |
1750 | /* cifs_get_writable_file() flags */ | |
1751 | #define FIND_WR_ANY 0 | |
1752 | #define FIND_WR_FSUID_ONLY 1 | |
1753 | #define FIND_WR_WITH_DELETE 2 | |
1754 | ||
1da177e4 LT |
1755 | #define MID_FREE 0 |
1756 | #define MID_REQUEST_ALLOCATED 1 | |
1757 | #define MID_REQUEST_SUBMITTED 2 | |
1758 | #define MID_RESPONSE_RECEIVED 4 | |
1759 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1760 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1761 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1762 | |
38bd4906 SP |
1763 | /* Flags */ |
1764 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1765 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1766 | |
ec637e3f SF |
1767 | /* Types of response buffer returned from SendReceive2 */ |
1768 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1769 | #define CIFS_SMALL_BUFFER 1 | |
1770 | #define CIFS_LARGE_BUFFER 2 | |
1771 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1772 | |
133672ef | 1773 | /* Type of Request to SendReceive2 */ |
7749981e | 1774 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
392e1c5d | 1775 | #define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */ |
7749981e | 1776 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
133672ef SF |
1777 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1778 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
392e1c5d | 1779 | #define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */ |
133672ef | 1780 | |
a891f0f8 | 1781 | /* Type of request operation */ |
04ad69c3 PA |
1782 | #define CIFS_ECHO_OP 0x080 /* echo request */ |
1783 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
1784 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ | |
1785 | #define CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */ | |
0f56db83 | 1786 | /* Lower bitmask values are reserved by others below. */ |
04ad69c3 PA |
1787 | #define CIFS_SESS_OP 0x2000 /* session setup request */ |
1788 | #define CIFS_OP_MASK 0x2780 /* mask request type */ | |
7fb8986e | 1789 | |
04ad69c3 PA |
1790 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
1791 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ | |
1792 | #define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */ | |
a891f0f8 | 1793 | |
3979877e SF |
1794 | /* Security Flags: indicate type of session setup needed */ |
1795 | #define CIFSSEC_MAY_SIGN 0x00001 | |
3979877e SF |
1796 | #define CIFSSEC_MAY_NTLMV2 0x00004 |
1797 | #define CIFSSEC_MAY_KRB5 0x00008 | |
3979877e | 1798 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ |
ac683924 | 1799 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1800 | |
1801 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1802 | /* note that only one of the following can be set so the | |
1803 | result of setting MUST flags more than once will be to | |
1804 | require use of the stronger protocol */ | |
3979877e SF |
1805 | #define CIFSSEC_MUST_NTLMV2 0x04004 |
1806 | #define CIFSSEC_MUST_KRB5 0x08008 | |
0d3a01fa | 1807 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1808 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1809 | #else |
ac683924 | 1810 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1811 | #endif /* UPCALL */ |
3979877e | 1812 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ |
ac683924 | 1813 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1814 | |
896a8fc2 | 1815 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
76a3c92e RS |
1816 | #define CIFSSEC_MAX (CIFSSEC_MUST_NTLMV2) |
1817 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) | |
1da177e4 LT |
1818 | /* |
1819 | ***************************************************************** | |
1820 | * All constants go here | |
1821 | ***************************************************************** | |
1822 | */ | |
1823 | ||
1824 | #define UID_HASH (16) | |
1825 | ||
1826 | /* | |
1827 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1828 | * following to be declared. | |
1829 | */ | |
1830 | ||
1831 | /**************************************************************************** | |
1832 | * Locking notes. All updates to global variables and lists should be | |
1833 | * protected by spinlocks or semaphores. | |
1834 | * | |
1835 | * Spinlocks | |
1836 | * --------- | |
1837 | * GlobalMid_Lock protects: | |
1838 | * list operations on pending_mid_q and oplockQ | |
1839 | * updates to XID counters, multiplex id and SMB sequence numbers | |
65525802 | 1840 | * list operations on global DnotifyReqList |
01cf3082 | 1841 | * updates to ses->status and TCP_Server_Info->tcpStatus |
0fa757b5 | 1842 | * updates to server->CurrentMid |
3afca265 SF |
1843 | * tcp_ses_lock protects: |
1844 | * list operations on tcp and SMB session lists | |
1845 | * tcon->open_file_lock protects the list of open files hanging off the tcon | |
487317c9 | 1846 | * inode->open_file_lock protects the openFileList hanging off the inode |
3afca265 | 1847 | * cfile->file_info_lock protects counters and fields in cifs file struct |
1da177e4 LT |
1848 | * f_owner.lock protects certain per file struct operations |
1849 | * mapping->page_lock protects certain per page operations | |
1850 | * | |
487317c9 RS |
1851 | * Note that the cifs_tcon.open_file_lock should be taken before |
1852 | * not after the cifsInodeInfo.open_file_lock | |
1853 | * | |
1da177e4 LT |
1854 | * Semaphores |
1855 | * ---------- | |
edc9dd1e SF |
1856 | * cifsInodeInfo->lock_sem protects: |
1857 | * the list of locks held by the inode | |
1da177e4 LT |
1858 | * |
1859 | ****************************************************************************/ | |
1860 | ||
1861 | #ifdef DECLARE_GLOBALS_HERE | |
1862 | #define GLOBAL_EXTERN | |
1863 | #else | |
1864 | #define GLOBAL_EXTERN extern | |
1865 | #endif | |
1866 | ||
e7ddee90 JL |
1867 | /* |
1868 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1869 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1870 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1871 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1872 | * by iterating over cifs_tcp_ses_list |
1873 | */ | |
1874 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1875 | ||
f1987b44 JL |
1876 | /* |
1877 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1878 | * tcp session, and the list of tcon's per smb session. It also protects | |
d92c7ce4 SF |
1879 | * the reference counters for the server, smb session, and tcon. It also |
1880 | * protects some fields in the TCP_Server_Info struct such as dstaddr. Finally, | |
f1987b44 | 1881 | * changes to the tcon->tidStatus should be done while holding this lock. |
3afca265 SF |
1882 | * generally the locks should be taken in order tcp_ses_lock before |
1883 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1884 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1885 | */ |
3f9bcca7 | 1886 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1887 | |
1da177e4 LT |
1888 | /* |
1889 | * Global transaction id (XID) information | |
1890 | */ | |
1891 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1892 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1893 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1894 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1895 | /* on midQ entries */ | |
1da177e4 LT |
1896 | /* |
1897 | * Global counters, updated atomically | |
1898 | */ | |
1899 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1900 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
6d82c27a | 1901 | GLOBAL_EXTERN atomic_t tcpSesNextId; |
1da177e4 LT |
1902 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; |
1903 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1904 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1905 | ||
aaa9bbe0 | 1906 | /* Various Debug counters */ |
4498eed5 SF |
1907 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1908 | #ifdef CONFIG_CIFS_STATS2 | |
1909 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1910 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
00778e22 | 1911 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 SF |
1912 | #endif |
1913 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1914 | GLOBAL_EXTERN atomic_t midCount; |
1915 | ||
1916 | /* Misc globals */ | |
f92a720e SF |
1917 | extern bool enable_oplocks; /* enable or disable oplocks */ |
1918 | extern bool lookupCacheEnabled; | |
1919 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 1920 | with more secure ntlmssp2 challenge/resp */ |
f92a720e | 1921 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
29e27923 | 1922 | extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */ |
fbfd0b46 | 1923 | extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */ |
53d31a3f | 1924 | extern bool enable_negotiate_signing; /* request use of faster (GMAC) signing if available */ |
f92a720e SF |
1925 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
1926 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1927 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1928 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
1929 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1930 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ | |
1da177e4 | 1931 | |
9b646972 | 1932 | void cifs_oplock_break(struct work_struct *work); |
b98749ca | 1933 | void cifs_queue_oplock_break(struct cifsFileInfo *cfile); |
c3f207ab | 1934 | void smb2_deferred_work_close(struct work_struct *work); |
3b7433b8 | 1935 | |
c3f207ab | 1936 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1937 | extern struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 1938 | extern struct workqueue_struct *decrypt_wq; |
32546a95 | 1939 | extern struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 1940 | extern struct workqueue_struct *cifsoplockd_wq; |
c3f207ab | 1941 | extern struct workqueue_struct *deferredclose_wq; |
3d22462a | 1942 | extern __u32 cifs_lock_secret; |
abd2e44d | 1943 | |
2dc7e1c0 PS |
1944 | extern mempool_t *cifs_mid_poolp; |
1945 | ||
23db65f5 JL |
1946 | /* Operations for different SMB versions */ |
1947 | #define SMB1_VERSION_STRING "1.0" | |
1948 | extern struct smb_version_operations smb1_operations; | |
1949 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1950 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1951 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1952 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1953 | #define SMB21_VERSION_STRING "2.1" |
1954 | extern struct smb_version_operations smb21_operations; | |
1955 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
1956 | #define SMBDEFAULT_VERSION_STRING "default" |
1957 | extern struct smb_version_values smbdefault_values; | |
1958 | #define SMB3ANY_VERSION_STRING "3" | |
1959 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 1960 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1961 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1962 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 1963 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 1964 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
1965 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
1966 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1967 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1968 | #define ALT_SMB311_VERSION_STRING "3.11" |
1969 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1970 | extern struct smb_version_values smb311_values; |
b8f7442b | 1971 | |
0b0430c6 K |
1972 | static inline char *get_security_type_str(enum securityEnum sectype) |
1973 | { | |
1974 | switch (sectype) { | |
1975 | case RawNTLMSSP: | |
1976 | return "RawNTLMSSP"; | |
1977 | case Kerberos: | |
1978 | return "Kerberos"; | |
1979 | case NTLMv2: | |
1980 | return "NTLMv2"; | |
0b0430c6 K |
1981 | default: |
1982 | return "Unknown"; | |
1983 | } | |
1984 | } | |
1985 | ||
b8f7442b AA |
1986 | static inline bool is_smb1_server(struct TCP_Server_Info *server) |
1987 | { | |
1988 | return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0; | |
1989 | } | |
1990 | ||
e183785f PA |
1991 | static inline bool is_tcon_dfs(struct cifs_tcon *tcon) |
1992 | { | |
1993 | /* | |
1994 | * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS | |
1995 | * Subsystem Notifies That a Share Is a DFS Share. | |
1996 | * | |
1997 | * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server | |
1998 | * Application Updates a Share. | |
1999 | */ | |
2000 | if (!tcon || !tcon->ses || !tcon->ses->server) | |
2001 | return false; | |
2002 | return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS : | |
2003 | tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT); | |
2004 | } | |
2005 | ||
c88f7dcd PA |
2006 | static inline bool cifs_is_referral_server(struct cifs_tcon *tcon, |
2007 | const struct dfs_info3_param *ref) | |
2008 | { | |
2009 | /* | |
2010 | * Check if all targets are capable of handling DFS referrals as per | |
2011 | * MS-DFSC 2.2.4 RESP_GET_DFS_REFERRAL. | |
2012 | */ | |
2013 | return is_tcon_dfs(tcon) || (ref && (ref->flags & DFSREF_REFERRAL_SERVER)); | |
2014 | } | |
2015 | ||
d80c6984 PA |
2016 | static inline u64 cifs_flock_len(struct file_lock *fl) |
2017 | { | |
2018 | return fl->fl_end == OFFSET_MAX ? 0 : fl->fl_end - fl->fl_start + 1; | |
2019 | } | |
2020 | ||
abd2e44d | 2021 | #endif /* _CIFS_GLOB_H */ |