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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 | ||
6c0f6218 | 109 | /* associated with each tcp and smb session */ |
1da177e4 LT |
110 | enum statusEnum { |
111 | CifsNew = 0, | |
112 | CifsGood, | |
113 | CifsExiting, | |
fd88ce93 | 114 | CifsNeedReconnect, |
73f9bfbe SP |
115 | CifsNeedNegotiate, |
116 | CifsInNegotiate, | |
117 | CifsNeedSessSetup, | |
118 | CifsInSessSetup, | |
fdf59eb5 SF |
119 | }; |
120 | ||
121 | /* associated with each tree connection to the server */ | |
122 | enum tid_status_enum { | |
123 | TID_NEW = 0, | |
124 | TID_GOOD, | |
125 | TID_EXITING, | |
126 | TID_NEED_RECON, | |
127 | TID_NEED_TCON, | |
128 | TID_IN_TCON, | |
129 | TID_NEED_FILES_INVALIDATE, /* currently unused */ | |
130 | TID_IN_FILES_INVALIDATE | |
1da177e4 LT |
131 | }; |
132 | ||
133 | enum securityEnum { | |
515d82ff | 134 | Unspecified = 0, /* not specified */ |
1da177e4 | 135 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 136 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 137 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
138 | }; |
139 | ||
5f98ca9a | 140 | struct session_key { |
b609f06a | 141 | unsigned int len; |
21e73393 | 142 | char *response; |
b609f06a SF |
143 | }; |
144 | ||
d2b91521 SP |
145 | /* crypto security descriptor definition */ |
146 | struct sdesc { | |
147 | struct shash_desc shash; | |
148 | char ctx[]; | |
149 | }; | |
150 | ||
f7c5445a | 151 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
152 | struct cifs_secmech { |
153 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
154 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 155 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 156 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
5fcd7f3f | 157 | struct crypto_shash *sha512; /* sha512 hash function */ |
d2b91521 SP |
158 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
159 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 160 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 161 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
5fcd7f3f | 162 | struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ |
026e93dc PS |
163 | struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ |
164 | struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ | |
d2b91521 SP |
165 | }; |
166 | ||
d3686d54 | 167 | /* per smb session structure/fields */ |
d2b91521 | 168 | struct ntlmssp_auth { |
5c234aa5 | 169 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
170 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
171 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
172 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 173 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
174 | }; |
175 | ||
442aa310 SF |
176 | struct cifs_cred { |
177 | int uid; | |
178 | int gid; | |
179 | int mode; | |
180 | int cecount; | |
181 | struct cifs_sid osid; | |
182 | struct cifs_sid gsid; | |
183 | struct cifs_ntace *ntaces; | |
184 | struct cifs_ace *aces; | |
185 | }; | |
186 | ||
1da177e4 LT |
187 | /* |
188 | ***************************************************************** | |
189 | * Except the CIFS PDUs themselves all the | |
190 | * globally interesting structs should go here | |
191 | ***************************************************************** | |
192 | */ | |
193 | ||
bf5ea0e2 JL |
194 | /* |
195 | * A smb_rqst represents a complete request to be issued to a server. It's | |
196 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
197 | * to start at the beginning of the first page. | |
198 | */ | |
199 | struct smb_rqst { | |
200 | struct kvec *rq_iov; /* array of kvecs */ | |
201 | unsigned int rq_nvec; /* number of kvecs in array */ | |
202 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
57a929a6 | 203 | unsigned int rq_offset; /* the offset to the 1st page */ |
bf5ea0e2 JL |
204 | unsigned int rq_npages; /* number pages in array */ |
205 | unsigned int rq_pagesz; /* page size to use */ | |
206 | unsigned int rq_tailsz; /* length of last page */ | |
207 | }; | |
208 | ||
121b046a JL |
209 | struct mid_q_entry; |
210 | struct TCP_Server_Info; | |
55157dfb | 211 | struct cifsFileInfo; |
082d0642 | 212 | struct cifs_ses; |
2e6e02ab | 213 | struct cifs_tcon; |
b669f33c | 214 | struct dfs_info3_param; |
1208ef1f | 215 | struct cifs_fattr; |
3fa1c6d1 | 216 | struct smb3_fs_context; |
fb1214e4 | 217 | struct cifs_fid; |
fc9c5966 | 218 | struct cifs_readdata; |
c9de5c80 | 219 | struct cifs_writedata; |
f9c6e234 | 220 | struct cifs_io_parms; |
92fc65a7 | 221 | struct cifs_search_info; |
95a3f2f3 | 222 | struct cifsInodeInfo; |
226730b4 | 223 | struct cifs_open_parms; |
335b7b62 | 224 | struct cifs_credits; |
121b046a | 225 | |
23db65f5 | 226 | struct smb_version_operations { |
fb2036d8 | 227 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 228 | struct mid_q_entry *); |
55157dfb | 229 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 230 | /* setup request: allocate mid, sign message */ |
fec344e3 | 231 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
f780bd3f AA |
232 | struct TCP_Server_Info *, |
233 | struct smb_rqst *); | |
45740847 | 234 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
235 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
236 | struct smb_rqst *); | |
082d0642 PS |
237 | /* check response: verify signature, map error */ |
238 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
239 | bool); | |
335b7b62 PS |
240 | void (*add_credits)(struct TCP_Server_Info *server, |
241 | const struct cifs_credits *credits, | |
242 | const int optype); | |
45275789 | 243 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
244 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
245 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 246 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
c781af7e PS |
247 | void (*revert_current_mid)(struct TCP_Server_Info *server, |
248 | const unsigned int val); | |
eb378711 PS |
249 | /* data offset from read response message */ |
250 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
251 | /* |
252 | * Data length from read response message | |
253 | * When in_remaining is true, the returned data length is in | |
254 | * message field DataRemaining for out-of-band data read (e.g through | |
255 | * Memory Registration RDMA write in SMBD). | |
256 | * Otherwise, the returned data length is in message field DataLength. | |
257 | */ | |
258 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
259 | /* map smb to linux error */ |
260 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
261 | /* find mid corresponding to the response message */ |
262 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 263 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
264 | void (*clear_stats)(struct cifs_tcon *); |
265 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 266 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 267 | /* verify the message */ |
373512ec | 268 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 269 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
04ad69c3 | 270 | int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *); |
9bd45408 PS |
271 | void (*downgrade_oplock)(struct TCP_Server_Info *server, |
272 | struct cifsInodeInfo *cinode, __u32 oplock, | |
273 | unsigned int epoch, bool *purge_cache); | |
316cf94a PS |
274 | /* process transaction2 response */ |
275 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
276 | char *, int); | |
286170aa PS |
277 | /* check if we need to negotiate */ |
278 | bool (*need_neg)(struct TCP_Server_Info *); | |
279 | /* negotiate to the server */ | |
f486ef8e SP |
280 | int (*negotiate)(const unsigned int xid, |
281 | struct cifs_ses *ses, | |
282 | struct TCP_Server_Info *server); | |
24985c53 | 283 | /* set negotiated write size */ |
3fa1c6d1 | 284 | unsigned int (*negotiate_wsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
24985c53 | 285 | /* set negotiated read size */ |
3fa1c6d1 | 286 | unsigned int (*negotiate_rsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
58c45c58 PS |
287 | /* setup smb sessionn */ |
288 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
f486ef8e | 289 | struct TCP_Server_Info *server, |
58c45c58 PS |
290 | const struct nls_table *); |
291 | /* close smb session */ | |
292 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
293 | /* connect to a server share */ |
294 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
295 | struct cifs_tcon *, const struct nls_table *); | |
296 | /* close tree connecion */ | |
297 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
298 | /* get DFS referrals */ |
299 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
300 | const char *, struct dfs_info3_param **, | |
301 | unsigned int *, const struct nls_table *, int); | |
af4281dc | 302 | /* informational QFS call */ |
0f060936 AG |
303 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *, |
304 | struct cifs_sb_info *); | |
68889f26 PS |
305 | /* check if a path is accessible or not */ |
306 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
307 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
308 | /* query path data from the server */ |
309 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
310 | struct cifs_sb_info *, const char *, | |
eb85d94b | 311 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
312 | /* query file data from the server */ |
313 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
314 | struct cifs_fid *, FILE_ALL_INFO *); | |
2e4564b3 SF |
315 | /* query reparse tag from srv to determine which type of special file */ |
316 | int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon, | |
317 | struct cifs_sb_info *cifs_sb, const char *path, | |
318 | __u32 *reparse_tag); | |
1208ef1f PS |
319 | /* get server index number */ |
320 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
321 | struct cifs_sb_info *, const char *, | |
322 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
323 | /* set size by path */ |
324 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
325 | const char *, __u64, struct cifs_sb_info *, bool); | |
326 | /* set size by file handle */ | |
327 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
328 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
329 | /* set attributes */ |
330 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
331 | const unsigned int); | |
64a5cfa6 SF |
332 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
333 | struct cifsFileInfo *); | |
f6d76178 PS |
334 | /* check if we can send an echo or nor */ |
335 | bool (*can_echo)(struct TCP_Server_Info *); | |
336 | /* send echo request */ | |
337 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 338 | /* create directory */ |
bea851b8 SF |
339 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
340 | umode_t mode, struct cifs_tcon *tcon, | |
341 | const char *full_path, | |
342 | struct cifs_sb_info *cifs_sb); | |
c3ca78e2 SF |
343 | int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode, |
344 | struct cifs_tcon *tcon, const char *name, | |
345 | struct cifs_sb_info *sb); | |
f436720e PS |
346 | /* set info on created directory */ |
347 | void (*mkdir_setinfo)(struct inode *, const char *, | |
348 | struct cifs_sb_info *, struct cifs_tcon *, | |
349 | const unsigned int); | |
f958ca5d PS |
350 | /* remove directory */ |
351 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
352 | struct cifs_sb_info *); | |
ed6875e0 PS |
353 | /* unlink file */ |
354 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
355 | struct cifs_sb_info *); | |
356 | /* open, rename and delete file */ | |
357 | int (*rename_pending_delete)(const char *, struct dentry *, | |
358 | const unsigned int); | |
8ceb9843 PS |
359 | /* send rename request */ |
360 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
361 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
362 | /* send create hardlink request */ |
363 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
364 | const char *, const char *, | |
365 | struct cifs_sb_info *); | |
b42bf888 PS |
366 | /* query symlink target */ |
367 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
ebaf546a RS |
368 | struct cifs_sb_info *, const char *, |
369 | char **, bool); | |
fb1214e4 | 370 | /* open a file for non-posix mounts */ |
226730b4 PS |
371 | int (*open)(const unsigned int, struct cifs_open_parms *, |
372 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
373 | /* set fid protocol-specific info */ |
374 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 375 | /* close a file */ |
760ad0ca PS |
376 | void (*close)(const unsigned int, struct cifs_tcon *, |
377 | struct cifs_fid *); | |
43f8a6a7 SF |
378 | /* close a file, returning file attributes and timestamps */ |
379 | void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon, | |
380 | struct cifsFileInfo *pfile_info); | |
1d8c4c00 PS |
381 | /* send a flush request to the server */ |
382 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
383 | /* async read from the server */ |
384 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 385 | /* async write to the server */ |
4a5c80d7 SF |
386 | int (*async_writev)(struct cifs_writedata *, |
387 | void (*release)(struct kref *)); | |
f9c6e234 | 388 | /* sync read from the server */ |
db8b631d | 389 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
390 | struct cifs_io_parms *, unsigned int *, char **, |
391 | int *); | |
ba9ad725 | 392 | /* sync write to the server */ |
db8b631d | 393 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
394 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
395 | unsigned long); | |
92fc65a7 PS |
396 | /* open dir, start readdir */ |
397 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
398 | const char *, struct cifs_sb_info *, | |
399 | struct cifs_fid *, __u16, | |
400 | struct cifs_search_info *); | |
401 | /* continue readdir */ | |
402 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
403 | struct cifs_fid *, | |
404 | __u16, struct cifs_search_info *srch_inf); | |
405 | /* close dir */ | |
406 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
407 | struct cifs_fid *); | |
408 | /* calculate a size of SMB message */ | |
9ec672bd | 409 | unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi); |
66265f13 PS |
410 | /* check for STATUS_PENDING and process the response if yes */ |
411 | bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); | |
511c54a2 PS |
412 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
413 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
414 | /* send oplock break response */ |
415 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
416 | struct cifsInodeInfo *); | |
76ec5e33 PS |
417 | /* query remote filesystem */ |
418 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
0f060936 | 419 | struct cifs_sb_info *, struct kstatfs *); |
d39a4f71 PS |
420 | /* send mandatory brlock to the server */ |
421 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
422 | __u64, __u32, int, int, bool); | |
423 | /* unlock range of mandatory locks */ | |
424 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
425 | const unsigned int); | |
426 | /* push brlocks from the cache to the server */ | |
427 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 428 | /* get lease key of the inode */ |
a41a28bd | 429 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 430 | /* set lease key of the inode */ |
a41a28bd | 431 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 432 | /* generate new lease key */ |
a41a28bd | 433 | void (*new_lease_key)(struct cifs_fid *); |
f486ef8e SP |
434 | int (*generate_signingkey)(struct cifs_ses *ses, |
435 | struct TCP_Server_Info *server); | |
eda1c54f LL |
436 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *, |
437 | bool allocate_crypto); | |
b3152e2c SF |
438 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
439 | struct cifsFileInfo *src_file); | |
834170c8 SF |
440 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
441 | struct cifsFileInfo *src_file, void __user *); | |
d26c2ddd SF |
442 | int (*notify)(const unsigned int xid, struct file *pfile, |
443 | void __user *pbuf); | |
b5be1a1c SP |
444 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
445 | struct cifs_sb_info *, const unsigned char *, | |
446 | char *, unsigned int *); | |
cbb0aba6 SP |
447 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
448 | struct cifs_sb_info *, const unsigned char *, | |
449 | char *, unsigned int *); | |
53ef1016 PS |
450 | /* if we can do cache read operations */ |
451 | bool (*is_read_op)(__u32); | |
452 | /* set oplock level for the inode */ | |
42873b0a PS |
453 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
454 | bool *); | |
a41a28bd | 455 | /* create lease context buffer for CREATE request */ |
729c0c9d | 456 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 457 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 458 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 459 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 460 | struct cifsFileInfo *src_file, |
620d8745 SP |
461 | struct cifsFileInfo *target_file, |
462 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
463 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
464 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
465 | u64 dest_off); | |
ff1c038a | 466 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
467 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
468 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 469 | size_t, struct cifs_sb_info *); |
666753c3 SF |
470 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
471 | const char *, const void *, const __u16, | |
5517554e | 472 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 | 473 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
3970acf7 | 474 | const char *, u32 *, u32); |
42eacf9e | 475 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
3970acf7 | 476 | const struct cifs_fid *, u32 *, u32); |
83e3bc23 SF |
477 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
478 | int); | |
7f6c5008 PS |
479 | /* writepages retry size */ |
480 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
481 | /* get mtu credits */ |
482 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
335b7b62 | 483 | unsigned int *, struct cifs_credits *); |
9a1c67e8 PS |
484 | /* adjust previously taken mtu credits to request size */ |
485 | int (*adjust_credits)(struct TCP_Server_Info *server, | |
486 | struct cifs_credits *credits, | |
487 | const unsigned int payload_size); | |
52755808 PS |
488 | /* check if we need to issue closedir */ |
489 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
490 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
491 | loff_t); | |
7fb8986e | 492 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
493 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
494 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
495 | int (*is_transform_hdr)(void *buf); |
496 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 497 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
498 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
499 | enum securityEnum); | |
8ce79ec3 | 500 | int (*next_header)(char *); |
f5b05d62 RS |
501 | /* ioctl passthrough for query_info */ |
502 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 | 503 | struct cifs_tcon *tcon, |
0f060936 | 504 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 505 | __le16 *path, int is_dir, |
f5b05d62 | 506 | unsigned long p); |
c847dccf AA |
507 | /* make unix special files (block, char, fifo, socket) */ |
508 | int (*make_node)(unsigned int xid, | |
509 | struct inode *inode, | |
510 | struct dentry *dentry, | |
511 | struct cifs_tcon *tcon, | |
55869139 | 512 | const char *full_path, |
c847dccf AA |
513 | umode_t mode, |
514 | dev_t device_number); | |
2f3ebaba RS |
515 | /* version specific fiemap implementation */ |
516 | int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *, | |
517 | struct fiemap_extent_info *, u64, u64); | |
dece44e3 RS |
518 | /* version specific llseek implementation */ |
519 | loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int); | |
8e670f77 RS |
520 | /* Check for STATUS_IO_TIMEOUT */ |
521 | bool (*is_status_io_timeout)(char *buf); | |
9e550b08 RS |
522 | /* Check for STATUS_NETWORK_NAME_DELETED */ |
523 | void (*is_network_name_deleted)(char *buf, struct TCP_Server_Info *srv); | |
23db65f5 JL |
524 | }; |
525 | ||
526 | struct smb_version_values { | |
527 | char *version_string; | |
e4aa25e7 SF |
528 | __u16 protocol_id; |
529 | __u32 req_capabilities; | |
106dc538 PS |
530 | __u32 large_lock_type; |
531 | __u32 exclusive_lock_type; | |
532 | __u32 shared_lock_type; | |
533 | __u32 unlock_lock_type; | |
93012bf9 | 534 | size_t header_preamble_size; |
1887f601 PS |
535 | size_t header_size; |
536 | size_t max_header_size; | |
eb378711 | 537 | size_t read_rsp_size; |
2dc7e1c0 | 538 | __le16 lock_cmd; |
29e20f9c PS |
539 | unsigned int cap_unix; |
540 | unsigned int cap_nt_find; | |
541 | unsigned int cap_large_files; | |
50285882 JL |
542 | __u16 signing_enabled; |
543 | __u16 signing_required; | |
a41a28bd | 544 | size_t create_lease_size; |
23db65f5 JL |
545 | }; |
546 | ||
1887f601 PS |
547 | #define HEADER_SIZE(server) (server->vals->header_size) |
548 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
549 | ||
d070f9dd AA |
550 | /** |
551 | * CIFS superblock mount flags (mnt_cifs_flags) to consider when | |
552 | * trying to reuse existing superblock for a new mount | |
553 | */ | |
25c7f41e PS |
554 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
555 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
556 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 557 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
558 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
559 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
560 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
561 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
562 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 | 563 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
d070f9dd | 564 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ |
6552d6a0 | 565 | CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ |
83bbfa70 | 566 | CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ |
41e033fe | 567 | CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) |
25c7f41e | 568 | |
d070f9dd AA |
569 | /** |
570 | * Generic VFS superblock mount flags (s_flags) to consider when | |
571 | * trying to reuse existing superblock for a new mount | |
572 | */ | |
1751e8a6 LT |
573 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
574 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
575 | |
576 | struct cifs_mnt_data { | |
577 | struct cifs_sb_info *cifs_sb; | |
3fa1c6d1 | 578 | struct smb3_fs_context *ctx; |
25c7f41e PS |
579 | int flags; |
580 | }; | |
581 | ||
792af7b0 PS |
582 | static inline unsigned int |
583 | get_rfc1002_length(void *buf) | |
584 | { | |
dca1c8d1 | 585 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
586 | } |
587 | ||
ec2e4523 PS |
588 | static inline void |
589 | inc_rfc1001_len(void *buf, int count) | |
590 | { | |
591 | be32_add_cpu((__be32 *)buf, count); | |
592 | } | |
593 | ||
1da177e4 | 594 | struct TCP_Server_Info { |
3b795210 SF |
595 | struct list_head tcp_ses_list; |
596 | struct list_head smb_ses_list; | |
6d82c27a | 597 | __u64 conn_id; /* connection identifier (useful for debugging) */ |
e7ddee90 | 598 | int srv_count; /* reference counter */ |
a10faeb2 | 599 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 600 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
601 | struct smb_version_operations *ops; |
602 | struct smb_version_values *vals; | |
080dc5e5 | 603 | /* updates to tcpStatus protected by cifs_tcp_ses_lock */ |
c3dccf48 | 604 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 605 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 606 | struct socket *ssocket; |
a9f1b85e | 607 | struct sockaddr_storage dstaddr; |
3eb9a889 | 608 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
609 | #ifdef CONFIG_NET_NS |
610 | struct net *net; | |
611 | #endif | |
d38d8c74 | 612 | wait_queue_head_t response_q; |
1da177e4 LT |
613 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
614 | struct list_head pending_mid_q; | |
edf1ae40 SF |
615 | bool noblocksnd; /* use blocking sendmsg */ |
616 | bool noautotune; /* do not autotune send buf sizes */ | |
c9f1c19c | 617 | bool nosharesock; |
6a5fa236 | 618 | bool tcp_nodelay; |
141891f4 SF |
619 | unsigned int credits; /* send no more requests at once */ |
620 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 621 | unsigned int in_flight; /* number of requests on the wire to server */ |
1b63f184 | 622 | unsigned int max_in_flight; /* max number of requests that were on wire */ |
2d86dbc9 | 623 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 624 | struct mutex srv_mutex; |
1da177e4 LT |
625 | struct task_struct *tsk; |
626 | char server_GUID[16]; | |
286170aa | 627 | __u16 sec_mode; |
38d77c50 | 628 | bool sign; /* is signing enabled on this connection? */ |
4f5c10f1 | 629 | bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */ |
c3dccf48 | 630 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
631 | int echo_credits; /* echo reserved slots */ |
632 | int oplock_credits; /* oplock break reserved slots */ | |
633 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 634 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 635 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 636 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
637 | unsigned int maxReq; /* Clients should submit no more */ |
638 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 639 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
640 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
641 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
642 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
643 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 644 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
645 | /* message size the server can send or receive for */ |
646 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 647 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 648 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
0fa757b5 | 649 | __u64 CurrentMid; /* multiplex id - rotating counter, protected by GlobalMid_Lock */ |
d3ba50b1 | 650 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 651 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 652 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 653 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 654 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 655 | struct session_key session_key; |
3a5ff61c | 656 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 657 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
658 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ |
659 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
660 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 661 | /* extended security flavors that server supports */ |
c3dccf48 JL |
662 | bool sec_ntlmssp; /* supports NTLMSSP */ |
663 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
664 | bool sec_kerberos; /* supports plain Kerberos */ |
665 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 666 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
667 | /* use SMBD connection instead of socket */ |
668 | bool rdma; | |
669 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
670 | struct smbd_connection *smbd_conn; | |
c74093b6 | 671 | struct delayed_work echo; /* echo ping workqueue job */ |
506c1da4 | 672 | struct delayed_work resolve; /* dns resolution workqueue job */ |
2a37ef94 JL |
673 | char *smallbuf; /* pointer to current "small" buffer */ |
674 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
675 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
676 | unsigned int pdu_size; | |
2a37ef94 | 677 | unsigned int total_read; /* total amount of data read in this pass */ |
1ae9a5a5 SF |
678 | atomic_t in_send; /* requests trying to send */ |
679 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
c3dccf48 | 680 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 | 681 | atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */ |
468d6779 | 682 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
433b8dd7 SF |
683 | __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */ |
684 | __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
685 | __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
468d6779 | 686 | #endif /* STATS2 */ |
ec2e4523 PS |
687 | unsigned int max_read; |
688 | unsigned int max_write; | |
563317ec | 689 | unsigned int min_offload; |
26ea888f | 690 | __le16 compress_algorithm; |
53d31a3f | 691 | __u16 signing_algorithm; |
5100d8a3 | 692 | __le16 cipher_type; |
8bd68c6e AA |
693 | /* save initital negprot hash */ |
694 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
53d31a3f | 695 | bool signing_negotiated; /* true if valid signing context rcvd from server */ |
fcef0db6 | 696 | bool posix_ext_supported; |
53e0e11e PS |
697 | struct delayed_work reconnect; /* reconnect workqueue job */ |
698 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 699 | unsigned long echo_interval; |
93d5cb51 PA |
700 | |
701 | /* | |
702 | * Number of targets available for reconnect. The more targets | |
703 | * the more tasks have to wait to let the demultiplex thread | |
704 | * reconnect. | |
705 | */ | |
706 | int nr_targets; | |
8eecd1c2 | 707 | bool noblockcnt; /* use non-blocking connect() */ |
0f2b305a SP |
708 | |
709 | /* | |
710 | * If this is a session channel, | |
711 | * primary_server holds the ref-counted | |
712 | * pointer to primary channel connection for the session. | |
713 | */ | |
714 | #define CIFS_SERVER_IS_CHAN(server) (!!(server)->primary_server) | |
715 | struct TCP_Server_Info *primary_server; | |
716 | ||
121d947d SC |
717 | #ifdef CONFIG_CIFS_SWN_UPCALL |
718 | bool use_swn_dstaddr; | |
719 | struct sockaddr_storage swn_dstaddr; | |
720 | #endif | |
cdc33630 PA |
721 | #ifdef CONFIG_CIFS_DFS_UPCALL |
722 | bool is_dfs_conn; /* if a dfs connection */ | |
c88f7dcd PA |
723 | struct mutex refpath_lock; /* protects leaf_fullpath */ |
724 | /* | |
725 | * Canonical DFS full paths that were used to chase referrals in mount and reconnect. | |
726 | * | |
727 | * origin_fullpath: first or original referral path | |
728 | * leaf_fullpath: last referral path (might be changed due to nested links in reconnect) | |
729 | * | |
730 | * current_fullpath: pointer to either origin_fullpath or leaf_fullpath | |
731 | * NOTE: cannot be accessed outside cifs_reconnect() and smb2_reconnect() | |
732 | * | |
733 | * format: \\HOST\SHARE\[OPTIONAL PATH] | |
734 | */ | |
735 | char *origin_fullpath, *leaf_fullpath, *current_fullpath; | |
cdc33630 | 736 | #endif |
1da177e4 LT |
737 | }; |
738 | ||
335b7b62 PS |
739 | struct cifs_credits { |
740 | unsigned int value; | |
741 | unsigned int instance; | |
742 | }; | |
743 | ||
fc40f9cf PS |
744 | static inline unsigned int |
745 | in_flight(struct TCP_Server_Info *server) | |
746 | { | |
747 | unsigned int num; | |
748 | spin_lock(&server->req_lock); | |
749 | num = server->in_flight; | |
750 | spin_unlock(&server->req_lock); | |
751 | return num; | |
752 | } | |
753 | ||
2d86dbc9 | 754 | static inline bool |
b227d215 | 755 | has_credits(struct TCP_Server_Info *server, int *credits, int num_credits) |
fc40f9cf | 756 | { |
2d86dbc9 | 757 | int num; |
fc40f9cf | 758 | spin_lock(&server->req_lock); |
bc205ed1 | 759 | num = *credits; |
fc40f9cf | 760 | spin_unlock(&server->req_lock); |
b227d215 | 761 | return num >= num_credits; |
fc40f9cf PS |
762 | } |
763 | ||
45275789 | 764 | static inline void |
34f4deb7 | 765 | add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, |
a891f0f8 | 766 | const int optype) |
45275789 | 767 | { |
34f4deb7 | 768 | server->ops->add_credits(server, credits, optype); |
45275789 PS |
769 | } |
770 | ||
cb7e9eab | 771 | static inline void |
335b7b62 PS |
772 | add_credits_and_wake_if(struct TCP_Server_Info *server, |
773 | const struct cifs_credits *credits, const int optype) | |
cb7e9eab | 774 | { |
335b7b62 PS |
775 | if (credits->value) { |
776 | server->ops->add_credits(server, credits, optype); | |
cb7e9eab PS |
777 | wake_up(&server->request_q); |
778 | } | |
779 | } | |
780 | ||
45275789 PS |
781 | static inline void |
782 | set_credits(struct TCP_Server_Info *server, const int val) | |
783 | { | |
784 | server->ops->set_credits(server, val); | |
785 | } | |
786 | ||
9a1c67e8 PS |
787 | static inline int |
788 | adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, | |
789 | const unsigned int payload_size) | |
790 | { | |
791 | return server->ops->adjust_credits ? | |
792 | server->ops->adjust_credits(server, credits, payload_size) : 0; | |
793 | } | |
794 | ||
9235d098 | 795 | static inline __le64 |
3d378d3f | 796 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 797 | { |
9235d098 | 798 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
799 | } |
800 | ||
3d378d3f TG |
801 | static inline __le16 |
802 | get_next_mid(struct TCP_Server_Info *server) | |
803 | { | |
9235d098 | 804 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
805 | /* |
806 | * The value in the SMB header should be little endian for easy | |
807 | * on-the-wire decoding. | |
808 | */ | |
809 | return cpu_to_le16(mid); | |
810 | } | |
811 | ||
c781af7e PS |
812 | static inline void |
813 | revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
814 | { | |
815 | if (server->ops->revert_current_mid) | |
816 | server->ops->revert_current_mid(server, val); | |
817 | } | |
818 | ||
819 | static inline void | |
820 | revert_current_mid_from_hdr(struct TCP_Server_Info *server, | |
0d35e382 | 821 | const struct smb2_hdr *shdr) |
c781af7e PS |
822 | { |
823 | unsigned int num = le16_to_cpu(shdr->CreditCharge); | |
824 | ||
825 | return revert_current_mid(server, num > 0 ? num : 1); | |
826 | } | |
827 | ||
3d378d3f TG |
828 | static inline __u16 |
829 | get_mid(const struct smb_hdr *smb) | |
830 | { | |
831 | return le16_to_cpu(smb->Mid); | |
832 | } | |
833 | ||
834 | static inline bool | |
835 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
836 | { | |
837 | return mid == le16_to_cpu(smb->Mid); | |
838 | } | |
839 | ||
24985c53 PS |
840 | /* |
841 | * When the server supports very large reads and writes via POSIX extensions, | |
842 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
843 | * including the RFC1001 length. | |
844 | * | |
845 | * Note that this might make for "interesting" allocation problems during | |
846 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 847 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
848 | * |
849 | * For reads, there is a similar problem as we need to allocate an array | |
850 | * of kvecs to handle the receive, though that should only need to be done | |
851 | * once. | |
852 | */ | |
853 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
854 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
855 | ||
856 | /* | |
857 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
858 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
859 | * write up to the maximum size described by RFC1002. | |
860 | */ | |
861 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
862 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
863 | ||
24985c53 PS |
864 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) |
865 | ||
866 | /* | |
867 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
868 | * those values when posix extensions aren't in force. In actuality here, we | |
869 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
870 | * to be ok with the extra byte even though Windows doesn't send writes that | |
871 | * are that large. | |
872 | * | |
873 | * Citation: | |
874 | * | |
cba22b1c | 875 | * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx |
24985c53 PS |
876 | */ |
877 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
878 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
879 | ||
f1d0c998 RL |
880 | /* |
881 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
882 | * when CONFIG_NET_NS isn't set. | |
883 | */ | |
884 | ||
885 | #ifdef CONFIG_NET_NS | |
886 | ||
887 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
888 | { | |
889 | return srv->net; | |
890 | } | |
891 | ||
892 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
893 | { | |
894 | srv->net = net; | |
895 | } | |
896 | ||
897 | #else | |
898 | ||
899 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
900 | { | |
901 | return &init_net; | |
902 | } | |
903 | ||
904 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
905 | { | |
906 | } | |
907 | ||
908 | #endif | |
909 | ||
b6f0dd5d AA |
910 | struct cifs_server_iface { |
911 | size_t speed; | |
912 | unsigned int rdma_capable : 1; | |
913 | unsigned int rss_capable : 1; | |
914 | struct sockaddr_storage sockaddr; | |
915 | }; | |
916 | ||
bcc88801 AA |
917 | struct cifs_chan { |
918 | struct TCP_Server_Info *server; | |
919 | __u8 signkey[SMB3_SIGN_KEY_SIZE]; | |
920 | }; | |
921 | ||
1da177e4 LT |
922 | /* |
923 | * Session structure. One of these for each uid session with a particular host | |
924 | */ | |
96daf2b0 | 925 | struct cifs_ses { |
14fbf50d | 926 | struct list_head smb_ses_list; |
3663c904 | 927 | struct list_head rlist; /* reconnect list */ |
3b795210 | 928 | struct list_head tcon_list; |
b327a717 | 929 | struct cifs_tcon *tcon_ipc; |
d7b619cf | 930 | struct mutex session_mutex; |
1da177e4 | 931 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 932 | int ses_count; /* reference counter */ |
080dc5e5 | 933 | enum statusEnum status; /* updates protected by cifs_tcp_ses_lock */ |
750d1151 | 934 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
935 | char *serverOS; /* name of operating system underlying server */ |
936 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 937 | char *serverDomain; /* security realm of server */ |
286170aa | 938 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
939 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
940 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 941 | unsigned int capabilities; |
b438fcf1 | 942 | char ip_addr[INET6_ADDRSTRLEN + 1]; /* Max ipv6 (or v4) addr string len */ |
34c87901 SF |
943 | char *user_name; /* must not be null except during init of sess |
944 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
945 | char *domainName; |
946 | char *password; | |
49bd49f9 | 947 | char *workstation_name; |
5d0d2882 | 948 | struct session_key auth_key; |
d3686d54 | 949 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
950 | enum securityEnum sectype; /* what security flavor was specified? */ |
951 | bool sign; /* is signing required? */ | |
39566443 | 952 | bool domainAuto:1; |
5478f9ba | 953 | __u16 session_flags; |
373512ec | 954 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
45a4546c SP |
955 | __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE]; |
956 | __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE]; | |
8bd68c6e | 957 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d AA |
958 | |
959 | /* | |
960 | * Network interfaces available on the server this session is | |
961 | * connected to. | |
962 | * | |
963 | * Other channels can be opened by connecting and binding this | |
964 | * session to interfaces from this list. | |
965 | * | |
966 | * iface_lock should be taken when accessing any of these fields | |
967 | */ | |
968 | spinlock_t iface_lock; | |
724244cd | 969 | /* ========= begin: protected by iface_lock ======== */ |
b6f0dd5d AA |
970 | struct cifs_server_iface *iface_list; |
971 | size_t iface_count; | |
972 | unsigned long iface_last_update; /* jiffies */ | |
724244cd | 973 | /* ========= end: protected by iface_lock ======== */ |
bcc88801 | 974 | |
724244cd SP |
975 | spinlock_t chan_lock; |
976 | /* ========= begin: protected by chan_lock ======== */ | |
bcc88801 | 977 | #define CIFS_MAX_CHANNELS 16 |
d1a931ce SP |
978 | #define CIFS_ALL_CHANNELS_SET(ses) \ |
979 | ((1UL << (ses)->chan_count) - 1) | |
980 | #define CIFS_ALL_CHANS_NEED_RECONNECT(ses) \ | |
981 | ((ses)->chans_need_reconnect == CIFS_ALL_CHANNELS_SET(ses)) | |
183eea2e SP |
982 | #define CIFS_SET_ALL_CHANS_NEED_RECONNECT(ses) \ |
983 | ((ses)->chans_need_reconnect = CIFS_ALL_CHANNELS_SET(ses)) | |
d1a931ce SP |
984 | #define CIFS_CHAN_NEEDS_RECONNECT(ses, index) \ |
985 | test_bit((index), &(ses)->chans_need_reconnect) | |
986 | ||
bcc88801 AA |
987 | struct cifs_chan chans[CIFS_MAX_CHANNELS]; |
988 | size_t chan_count; | |
989 | size_t chan_max; | |
990 | atomic_t chan_seq; /* round robin state */ | |
d1a931ce SP |
991 | |
992 | /* | |
993 | * chans_need_reconnect is a bitmap indicating which of the channels | |
994 | * under this smb session needs to be reconnected. | |
995 | * If not multichannel session, only one bit will be used. | |
f486ef8e SP |
996 | * |
997 | * We will ask for sess and tcon reconnection only if all the | |
998 | * channels are marked for needing reconnection. This will | |
999 | * enable the sessions on top to continue to live till any | |
1000 | * of the channels below are active. | |
d1a931ce SP |
1001 | */ |
1002 | unsigned long chans_need_reconnect; | |
724244cd | 1003 | /* ========= end: protected by chan_lock ======== */ |
1da177e4 | 1004 | }; |
233839b1 | 1005 | |
29e20f9c PS |
1006 | static inline bool |
1007 | cap_unix(struct cifs_ses *ses) | |
1008 | { | |
1009 | return ses->server->vals->cap_unix & ses->capabilities; | |
1010 | } | |
1011 | ||
a93864d9 RS |
1012 | struct cached_fid { |
1013 | bool is_valid:1; /* Do we have a useable root fid */ | |
b0f6df73 | 1014 | bool file_all_info_is_valid:1; |
d9191319 | 1015 | bool has_lease:1; |
ed20f54a | 1016 | unsigned long time; /* jiffies of when lease was taken */ |
9da6ec77 | 1017 | struct kref refcount; |
a93864d9 RS |
1018 | struct cifs_fid *fid; |
1019 | struct mutex fid_mutex; | |
1020 | struct cifs_tcon *tcon; | |
5e9c89d4 | 1021 | struct dentry *dentry; |
a93864d9 | 1022 | struct work_struct lease_break; |
b0f6df73 | 1023 | struct smb2_file_all_info file_all_info; |
a93864d9 RS |
1024 | }; |
1025 | ||
1da177e4 LT |
1026 | /* |
1027 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 1028 | * session |
1da177e4 | 1029 | */ |
96daf2b0 | 1030 | struct cifs_tcon { |
f1987b44 JL |
1031 | struct list_head tcon_list; |
1032 | int tc_count; | |
53e0e11e | 1033 | struct list_head rlist; /* reconnect list */ |
fae8044c SF |
1034 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
1035 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 1036 | struct list_head openFileList; |
3afca265 | 1037 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 1038 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 1039 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 1040 | char *nativeFileSystem; |
00e485b0 | 1041 | char *password; /* for share-level security */ |
faaf946a | 1042 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 | 1043 | __u16 Flags; /* optional support bits */ |
fdf59eb5 | 1044 | enum tid_status_enum status; |
1da177e4 | 1045 | atomic_t num_smbs_sent; |
44c58186 PS |
1046 | union { |
1047 | struct { | |
1048 | atomic_t num_writes; | |
1049 | atomic_t num_reads; | |
1050 | atomic_t num_flushes; | |
1051 | atomic_t num_oplock_brks; | |
1052 | atomic_t num_opens; | |
1053 | atomic_t num_closes; | |
1054 | atomic_t num_deletes; | |
1055 | atomic_t num_mkdirs; | |
1056 | atomic_t num_posixopens; | |
1057 | atomic_t num_posixmkdirs; | |
1058 | atomic_t num_rmdirs; | |
1059 | atomic_t num_renames; | |
1060 | atomic_t num_t2renames; | |
1061 | atomic_t num_ffirst; | |
1062 | atomic_t num_fnext; | |
1063 | atomic_t num_fclose; | |
1064 | atomic_t num_hardlinks; | |
1065 | atomic_t num_symlinks; | |
1066 | atomic_t num_locks; | |
1067 | atomic_t num_acl_get; | |
1068 | atomic_t num_acl_set; | |
1069 | } cifs_stats; | |
d60622eb PS |
1070 | struct { |
1071 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
1072 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
1073 | } smb2_stats; | |
44c58186 | 1074 | } stats; |
1da177e4 LT |
1075 | __u64 bytes_read; |
1076 | __u64 bytes_written; | |
3afca265 | 1077 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 1078 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 1079 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 1080 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
1081 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
1082 | bool pipe:1; /* set if connection to pipe share */ | |
1083 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
1084 | bool retry:1; |
1085 | bool nocase:1; | |
3d4ef9a1 | 1086 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
82e9367c | 1087 | bool nodelete:1; |
95b1cb90 | 1088 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 1089 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 1090 | for this mount even if server would support */ |
b326614e | 1091 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 1092 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1093 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1094 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1095 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1096 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1097 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1098 | bool use_persistent:1; /* use persistent instead of durable handles */ |
3e7a02d4 | 1099 | bool no_lease:1; /* Do not request leases on files or directories */ |
b7fd0fa0 | 1100 | bool use_witness:1; /* use witness protocol */ |
769ee6a4 | 1101 | __le32 capabilities; |
faaf946a PS |
1102 | __u32 share_flags; |
1103 | __u32 maximal_access; | |
1104 | __u32 vol_serial_number; | |
1105 | __le64 vol_create_time; | |
8b217fe7 | 1106 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
ca567eb2 | 1107 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
af6a12ea SF |
1108 | __u32 ss_flags; /* sector size flags */ |
1109 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1110 | __u32 max_chunks; |
1111 | __u32 max_bytes_chunk; | |
1112 | __u32 max_bytes_copy; | |
d03382ce SJ |
1113 | #ifdef CONFIG_CIFS_FSCACHE |
1114 | u64 resource_id; /* server resource id */ | |
70431bfd | 1115 | struct fscache_volume *fscache; /* cookie for share */ |
d03382ce | 1116 | #endif |
233839b1 | 1117 | struct list_head pending_opens; /* list of incomplete opens */ |
a93864d9 | 1118 | struct cached_fid crfid; /* Cached root fid */ |
c18c842b | 1119 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c | 1120 | #ifdef CONFIG_CIFS_DFS_UPCALL |
54be1f6c PA |
1121 | struct list_head ulist; /* cache update list */ |
1122 | #endif | |
1da177e4 LT |
1123 | }; |
1124 | ||
7ffec372 JL |
1125 | /* |
1126 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1127 | * container holds a tcon reference. It is considered safe to free one of | |
1128 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1129 | * "get" on the container. | |
1130 | */ | |
1131 | struct tcon_link { | |
b647c35f | 1132 | struct rb_node tl_rbnode; |
6d4a0832 | 1133 | kuid_t tl_uid; |
9d002df4 JL |
1134 | unsigned long tl_flags; |
1135 | #define TCON_LINK_MASTER 0 | |
1136 | #define TCON_LINK_PENDING 1 | |
1137 | #define TCON_LINK_IN_TREE 2 | |
1138 | unsigned long tl_time; | |
1139 | atomic_t tl_count; | |
96daf2b0 | 1140 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1141 | }; |
1142 | ||
9d002df4 | 1143 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1144 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1145 | |
96daf2b0 | 1146 | static inline struct cifs_tcon * |
7ffec372 JL |
1147 | tlink_tcon(struct tcon_link *tlink) |
1148 | { | |
9d002df4 | 1149 | return tlink->tl_tcon; |
7ffec372 JL |
1150 | } |
1151 | ||
8ddecf5f AA |
1152 | static inline struct tcon_link * |
1153 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1154 | { | |
1155 | return cifs_sb->master_tlink; | |
1156 | } | |
1157 | ||
9d002df4 | 1158 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1159 | |
13cfb733 JL |
1160 | static inline struct tcon_link * |
1161 | cifs_get_tlink(struct tcon_link *tlink) | |
1162 | { | |
9d002df4 JL |
1163 | if (tlink && !IS_ERR(tlink)) |
1164 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1165 | return tlink; |
1166 | } | |
1167 | ||
7ffec372 | 1168 | /* This function is always expected to succeed */ |
96daf2b0 | 1169 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1170 | |
233839b1 PS |
1171 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1172 | ||
1173 | struct cifs_pending_open { | |
1174 | struct list_head olist; | |
1175 | struct tcon_link *tlink; | |
1176 | __u8 lease_key[16]; | |
1177 | __u32 oplock; | |
1178 | }; | |
1179 | ||
c3f207ab RS |
1180 | struct cifs_deferred_close { |
1181 | struct list_head dlist; | |
1182 | struct tcon_link *tlink; | |
1183 | __u16 netfid; | |
1184 | __u64 persistent_fid; | |
1185 | __u64 volatile_fid; | |
1186 | }; | |
1187 | ||
1da177e4 | 1188 | /* |
7ee1af76 JA |
1189 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1190 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1191 | */ |
1192 | struct cifsLockInfo { | |
7ee1af76 | 1193 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1194 | struct list_head blist; /* pointer to locks blocked on this */ |
1195 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1196 | __u64 offset; |
1197 | __u64 length; | |
03776f45 | 1198 | __u32 pid; |
9645759c RS |
1199 | __u16 type; |
1200 | __u16 flags; | |
1da177e4 LT |
1201 | }; |
1202 | ||
1203 | /* | |
1204 | * One of these for each open instance of a file | |
1205 | */ | |
1206 | struct cifs_search_info { | |
1207 | loff_t index_of_last_entry; | |
1208 | __u16 entries_in_buffer; | |
1209 | __u16 info_level; | |
1210 | __u32 resume_key; | |
d38d8c74 SF |
1211 | char *ntwrk_buf_start; |
1212 | char *srch_entries_start; | |
0752f152 | 1213 | char *last_entry; |
eaf35b1e | 1214 | const char *presume_name; |
1da177e4 | 1215 | unsigned int resume_name_len; |
4b18f2a9 SF |
1216 | bool endOfSearch:1; |
1217 | bool emptyDir:1; | |
1218 | bool unicode:1; | |
1219 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1220 | }; |
1221 | ||
d0959b08 | 1222 | #define ACL_NO_MODE ((umode_t)(-1)) |
226730b4 PS |
1223 | struct cifs_open_parms { |
1224 | struct cifs_tcon *tcon; | |
1225 | struct cifs_sb_info *cifs_sb; | |
1226 | int disposition; | |
1227 | int desired_access; | |
1228 | int create_options; | |
1229 | const char *path; | |
1230 | struct cifs_fid *fid; | |
ce558b0e | 1231 | umode_t mode; |
9cbc0b73 | 1232 | bool reconnect:1; |
226730b4 PS |
1233 | }; |
1234 | ||
4b4de76e PS |
1235 | struct cifs_fid { |
1236 | __u16 netfid; | |
f0df737e PS |
1237 | __u64 persistent_fid; /* persist file id for smb2 */ |
1238 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1239 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1240 | __u8 create_guid[16]; |
86f740f2 | 1241 | __u32 access; |
233839b1 | 1242 | struct cifs_pending_open *pending_open; |
42873b0a | 1243 | unsigned int epoch; |
dfe33f9a SF |
1244 | #ifdef CONFIG_CIFS_DEBUG2 |
1245 | __u64 mid; | |
1246 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1247 | bool purge_cache; |
4b4de76e PS |
1248 | }; |
1249 | ||
f45d3416 PS |
1250 | struct cifs_fid_locks { |
1251 | struct list_head llist; | |
1252 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1253 | struct list_head locks; /* locks held by fid above */ | |
1254 | }; | |
1255 | ||
1da177e4 | 1256 | struct cifsFileInfo { |
3afca265 | 1257 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1258 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1259 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1260 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1261 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1262 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1263 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1264 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1265 | struct list_head rlist; /* reconnect list */ |
1da177e4 LT |
1266 | /* BB add lock scope info here if needed */ ; |
1267 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1268 | struct dentry *dentry; |
13cfb733 | 1269 | struct tcon_link *tlink; |
3afca265 | 1270 | unsigned int f_flags; |
4b18f2a9 | 1271 | bool invalidHandle:1; /* file closed via session abend */ |
4e8aea30 | 1272 | bool swapfile:1; |
3bc303c2 | 1273 | bool oplock_break_cancelled:1; |
9bd45408 PS |
1274 | unsigned int oplock_epoch; /* epoch from the lease break */ |
1275 | __u32 oplock_level; /* oplock/lease level from the lease break */ | |
3afca265 SF |
1276 | int count; |
1277 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1278 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1279 | struct cifs_search_info srch_inf; |
9b646972 | 1280 | struct work_struct oplock_break; /* work for oplock breaks */ |
32546a95 | 1281 | struct work_struct put; /* work for the final part of _put */ |
c3f207ab | 1282 | struct delayed_work deferred; |
860b69a9 | 1283 | bool deferred_close_scheduled; /* Flag to indicate close is scheduled */ |
1da177e4 LT |
1284 | }; |
1285 | ||
fa2989f4 PS |
1286 | struct cifs_io_parms { |
1287 | __u16 netfid; | |
09a4707e PS |
1288 | __u64 persistent_fid; /* persist file id for smb2 */ |
1289 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1290 | __u32 pid; |
1291 | __u64 offset; | |
1292 | unsigned int length; | |
96daf2b0 | 1293 | struct cifs_tcon *tcon; |
352d96f3 | 1294 | struct TCP_Server_Info *server; |
fa2989f4 PS |
1295 | }; |
1296 | ||
ccf7f408 PS |
1297 | struct cifs_aio_ctx { |
1298 | struct kref refcount; | |
1299 | struct list_head list; | |
1300 | struct mutex aio_mutex; | |
1301 | struct completion done; | |
1302 | struct iov_iter iter; | |
1303 | struct kiocb *iocb; | |
1304 | struct cifsFileInfo *cfile; | |
1305 | struct bio_vec *bv; | |
c610c4b6 | 1306 | loff_t pos; |
ccf7f408 PS |
1307 | unsigned int npages; |
1308 | ssize_t rc; | |
1309 | unsigned int len; | |
1310 | unsigned int total_len; | |
1311 | bool should_dirty; | |
6e6e2b86 LL |
1312 | /* |
1313 | * Indicates if this aio_ctx is for direct_io, | |
1314 | * If yes, iter is a copy of the user passed iov_iter | |
1315 | */ | |
1316 | bool direct_io; | |
ccf7f408 PS |
1317 | }; |
1318 | ||
09a4707e PS |
1319 | /* asynchronous read support */ |
1320 | struct cifs_readdata { | |
1321 | struct kref refcount; | |
1322 | struct list_head list; | |
1323 | struct completion done; | |
1324 | struct cifsFileInfo *cfile; | |
1325 | struct address_space *mapping; | |
6685c5e2 | 1326 | struct cifs_aio_ctx *ctx; |
09a4707e PS |
1327 | __u64 offset; |
1328 | unsigned int bytes; | |
34a54d61 | 1329 | unsigned int got_bytes; |
09a4707e PS |
1330 | pid_t pid; |
1331 | int result; | |
09a4707e | 1332 | struct work_struct work; |
8321fec4 JL |
1333 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1334 | struct cifs_readdata *rdata, | |
1335 | unsigned int len); | |
d70b9104 PS |
1336 | int (*copy_into_pages)(struct TCP_Server_Info *server, |
1337 | struct cifs_readdata *rdata, | |
1338 | struct iov_iter *iter); | |
738f9de5 | 1339 | struct kvec iov[2]; |
352d96f3 | 1340 | struct TCP_Server_Info *server; |
74dcf418 LL |
1341 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1342 | struct smbd_mr *mr; | |
1343 | #endif | |
8321fec4 | 1344 | unsigned int pagesz; |
57a929a6 | 1345 | unsigned int page_offset; |
8321fec4 | 1346 | unsigned int tailsz; |
335b7b62 | 1347 | struct cifs_credits credits; |
c5fab6f4 | 1348 | unsigned int nr_pages; |
f9f5aca1 | 1349 | struct page **pages; |
09a4707e PS |
1350 | }; |
1351 | ||
33319141 PS |
1352 | /* asynchronous write support */ |
1353 | struct cifs_writedata { | |
1354 | struct kref refcount; | |
1355 | struct list_head list; | |
1356 | struct completion done; | |
1357 | enum writeback_sync_modes sync_mode; | |
1358 | struct work_struct work; | |
1359 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1360 | struct cifs_aio_ctx *ctx; |
33319141 PS |
1361 | __u64 offset; |
1362 | pid_t pid; | |
1363 | unsigned int bytes; | |
1364 | int result; | |
352d96f3 | 1365 | struct TCP_Server_Info *server; |
db223a59 LL |
1366 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1367 | struct smbd_mr *mr; | |
1368 | #endif | |
eddb079d | 1369 | unsigned int pagesz; |
57a929a6 | 1370 | unsigned int page_offset; |
eddb079d | 1371 | unsigned int tailsz; |
335b7b62 | 1372 | struct cifs_credits credits; |
33319141 | 1373 | unsigned int nr_pages; |
8e7360f6 | 1374 | struct page **pages; |
33319141 PS |
1375 | }; |
1376 | ||
5f6dbc9e JL |
1377 | /* |
1378 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1379 | * cfile->file_info_lock held. |
5f6dbc9e | 1380 | */ |
764a1b1a JL |
1381 | static inline void |
1382 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1383 | { |
5f6dbc9e | 1384 | ++cifs_file->count; |
6ab409b5 DK |
1385 | } |
1386 | ||
764a1b1a | 1387 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
32546a95 RS |
1388 | void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr, |
1389 | bool offload); | |
b33879aa | 1390 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1391 | |
18cceb6a PS |
1392 | #define CIFS_CACHE_READ_FLG 1 |
1393 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1394 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1395 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1396 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1397 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a | 1398 | |
83bbfa70 | 1399 | #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 | 1400 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
41e033fe | 1401 | #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 | 1402 | |
1da177e4 LT |
1403 | /* |
1404 | * One of these for each file inode | |
1405 | */ | |
1406 | ||
1407 | struct cifsInodeInfo { | |
bc899ee1 DH |
1408 | struct { |
1409 | /* These must be contiguous */ | |
1410 | struct inode vfs_inode; /* the VFS's inode record */ | |
1411 | struct netfs_i_context netfs_ctx; /* Netfslib context */ | |
1412 | }; | |
d59dad2b | 1413 | bool can_cache_brlcks; |
f45d3416 | 1414 | struct list_head llist; /* locks helb by this inode */ |
d46b0da7 DW |
1415 | /* |
1416 | * NOTE: Some code paths call down_read(lock_sem) twice, so | |
a03f507d | 1417 | * we must always use cifs_down_write() instead of down_write() |
d46b0da7 DW |
1418 | * for this semaphore to avoid deadlocks. |
1419 | */ | |
1b4b55a1 | 1420 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1421 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1422 | struct list_head openFileList; |
487317c9 | 1423 | spinlock_t open_file_lock; /* protects openFileList */ |
1da177e4 | 1424 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1425 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1426 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1427 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1428 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
9bd45408 | 1429 | #define CIFS_INODE_FLAG_UNUSED (2) /* Unused flag */ |
aff8d5ca JL |
1430 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1431 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1432 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
c3f207ab | 1433 | #define CIFS_INO_MODIFIED_ATTR (6) /* Indicate change in mtime/ctime */ |
35866f3f | 1434 | #define CIFS_INO_CLOSE_ON_LOCK (7) /* Not to defer the close when lock is set */ |
aff8d5ca | 1435 | unsigned long flags; |
c11f1df5 SP |
1436 | spinlock_t writers_lock; |
1437 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1438 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1439 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1440 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1441 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1442 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
c3f207ab RS |
1443 | struct list_head deferred_closes; /* list of deferred closes */ |
1444 | spinlock_t deferred_lock; /* protection on deferred list */ | |
0ab95c25 | 1445 | bool lease_granted; /* Flag to indicate whether lease or oplock is granted. */ |
1da177e4 LT |
1446 | }; |
1447 | ||
1448 | static inline struct cifsInodeInfo * | |
1449 | CIFS_I(struct inode *inode) | |
1450 | { | |
1451 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1452 | } | |
1453 | ||
1454 | static inline struct cifs_sb_info * | |
1455 | CIFS_SB(struct super_block *sb) | |
1456 | { | |
1457 | return sb->s_fs_info; | |
1458 | } | |
1459 | ||
7119e220 AV |
1460 | static inline struct cifs_sb_info * |
1461 | CIFS_FILE_SB(struct file *file) | |
1462 | { | |
1463 | return CIFS_SB(file_inode(file)->i_sb); | |
1464 | } | |
1465 | ||
ab2f218f | 1466 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1467 | { |
1468 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1469 | return '/'; | |
1470 | else | |
1471 | return '\\'; | |
1472 | } | |
1da177e4 | 1473 | |
f87d39d9 SF |
1474 | static inline void |
1475 | convert_delimiter(char *path, char delim) | |
1476 | { | |
1cc9bd68 | 1477 | char old_delim, *pos; |
f87d39d9 SF |
1478 | |
1479 | if (delim == '/') | |
1480 | old_delim = '\\'; | |
1481 | else | |
1482 | old_delim = '/'; | |
1483 | ||
1cc9bd68 SF |
1484 | pos = path; |
1485 | while ((pos = strchr(pos, old_delim))) | |
1486 | *pos = delim; | |
f87d39d9 SF |
1487 | } |
1488 | ||
a4544347 SF |
1489 | #define cifs_stats_inc atomic_inc |
1490 | ||
96daf2b0 | 1491 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1492 | unsigned int bytes) |
1493 | { | |
1494 | if (bytes) { | |
1495 | spin_lock(&tcon->stat_lock); | |
1496 | tcon->bytes_written += bytes; | |
1497 | spin_unlock(&tcon->stat_lock); | |
1498 | } | |
1499 | } | |
1500 | ||
96daf2b0 | 1501 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1502 | unsigned int bytes) |
1503 | { | |
1504 | spin_lock(&tcon->stat_lock); | |
1505 | tcon->bytes_read += bytes; | |
1506 | spin_unlock(&tcon->stat_lock); | |
1507 | } | |
a4544347 | 1508 | |
2b84a36c JL |
1509 | |
1510 | /* | |
44d22d84 JL |
1511 | * This is the prototype for the mid receive function. This function is for |
1512 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1513 | * just after the MID in struct smb_hdr). Note: | |
1514 | * | |
1515 | * - This will be called by cifsd, with no locks held. | |
1516 | * - The mid will still be on the pending_mid_q. | |
1517 | * - mid->resp_buf will point to the current buffer. | |
1518 | * | |
1519 | * Returns zero on a successful receive, or an error. The receive state in | |
1520 | * the TCP_Server_Info will also be updated. | |
1521 | */ | |
1522 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1523 | struct mid_q_entry *mid); | |
1524 | ||
1525 | /* | |
1526 | * This is the prototype for the mid callback function. This is called once the | |
1527 | * mid has been received off of the socket. When creating one, take special | |
1528 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1529 | * |
3c1105df JL |
1530 | * - it will be called by cifsd, with no locks held |
1531 | * - the mid will be removed from any lists | |
2b84a36c JL |
1532 | */ |
1533 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1534 | ||
9b7c18a2 PS |
1535 | /* |
1536 | * This is the protopyte for mid handle function. This is called once the mid | |
1537 | * has been recognized after decryption of the message. | |
1538 | */ | |
1539 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1540 | struct mid_q_entry *mid); | |
1541 | ||
1da177e4 LT |
1542 | /* one of these for every pending CIFS request to the server */ |
1543 | struct mid_q_entry { | |
1544 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1545 | struct kref refcount; |
2dc7e1c0 | 1546 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 | 1547 | __u64 mid; /* multiplex id */ |
c781af7e | 1548 | __u16 credits; /* number of credits consumed by this mid */ |
86a7964b | 1549 | __u16 credits_received; /* number of credits from the response */ |
7c9421e1 | 1550 | __u32 pid; /* process id */ |
1da177e4 | 1551 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1552 | unsigned long when_alloc; /* when mid was created */ |
1553 | #ifdef CONFIG_CIFS_STATS2 | |
1554 | unsigned long when_sent; /* time when smb send finished */ | |
1555 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1556 | #endif | |
44d22d84 | 1557 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1558 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1559 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1560 | void *callback_data; /* general purpose pointer for callback */ |
f1f27ad7 | 1561 | struct task_struct *creator; |
d4e4854f | 1562 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1563 | unsigned int resp_buf_size; |
7c9421e1 | 1564 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1565 | unsigned int mid_flags; |
7c9421e1 | 1566 | __le16 command; /* smb command code */ |
8a26f0f7 | 1567 | unsigned int optype; /* operation type */ |
7c9421e1 | 1568 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1569 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1570 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1571 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1572 | }; |
1573 | ||
38bd4906 SP |
1574 | struct close_cancelled_open { |
1575 | struct cifs_fid fid; | |
1576 | struct cifs_tcon *tcon; | |
1577 | struct work_struct work; | |
87bc2376 RS |
1578 | __u64 mid; |
1579 | __u16 cmd; | |
38bd4906 SP |
1580 | }; |
1581 | ||
789e6661 SF |
1582 | /* Make code in transport.c a little cleaner by moving |
1583 | update of optional stats into function below */ | |
789e6661 SF |
1584 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
1585 | { | |
1586 | atomic_inc(&server->in_send); | |
1587 | } | |
1588 | ||
1589 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1590 | { | |
1591 | atomic_dec(&server->in_send); | |
1592 | } | |
1593 | ||
1594 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1595 | { | |
1596 | atomic_inc(&server->num_waiters); | |
1597 | } | |
1598 | ||
1599 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1600 | { | |
1601 | atomic_dec(&server->num_waiters); | |
1602 | } | |
1603 | ||
1ae9a5a5 | 1604 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 SF |
1605 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1606 | { | |
1607 | mid->when_sent = jiffies; | |
1608 | } | |
1609 | #else | |
789e6661 SF |
1610 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1611 | { | |
1612 | } | |
1613 | #endif | |
1da177e4 | 1614 | |
ff5dbd9e SF |
1615 | /* for pending dnotify requests */ |
1616 | struct dir_notify_req { | |
13cd4b7f SF |
1617 | struct list_head lhead; |
1618 | __le16 Pid; | |
1619 | __le16 PidHigh; | |
1620 | __u16 Mid; | |
1621 | __u16 Tid; | |
1622 | __u16 Uid; | |
1623 | __u16 netfid; | |
1624 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1625 | int multishot; | |
1626 | struct file *pfile; | |
ff5dbd9e SF |
1627 | }; |
1628 | ||
366781c1 SF |
1629 | struct dfs_info3_param { |
1630 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1631 | int path_consumed; |
366781c1 SF |
1632 | int server_type; |
1633 | int ref_flag; | |
1634 | char *path_name; | |
1635 | char *node_name; | |
e7b602f4 | 1636 | int ttl; |
366781c1 SF |
1637 | }; |
1638 | ||
9e992755 RS |
1639 | struct file_list { |
1640 | struct list_head list; | |
1641 | struct cifsFileInfo *cfile; | |
1642 | }; | |
1643 | ||
cc0bad75 JL |
1644 | /* |
1645 | * common struct for holding inode info when searching for or updating an | |
1646 | * inode with new info | |
1647 | */ | |
1648 | ||
1649 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1650 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1651 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1652 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1653 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
7ea884c7 | 1654 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 |
cc0bad75 JL |
1655 | |
1656 | struct cifs_fattr { | |
1657 | u32 cf_flags; | |
1658 | u32 cf_cifsattrs; | |
1659 | u64 cf_uniqueid; | |
1660 | u64 cf_eof; | |
1661 | u64 cf_bytes; | |
20054bd6 | 1662 | u64 cf_createtime; |
4a2c8cf5 EB |
1663 | kuid_t cf_uid; |
1664 | kgid_t cf_gid; | |
cc0bad75 JL |
1665 | umode_t cf_mode; |
1666 | dev_t cf_rdev; | |
1667 | unsigned int cf_nlink; | |
1668 | unsigned int cf_dtype; | |
95390201 AB |
1669 | struct timespec64 cf_atime; |
1670 | struct timespec64 cf_mtime; | |
1671 | struct timespec64 cf_ctime; | |
046aca3c | 1672 | u32 cf_cifstag; |
cc0bad75 JL |
1673 | }; |
1674 | ||
366781c1 SF |
1675 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1676 | { | |
1677 | if (param) { | |
1678 | kfree(param->path_name); | |
1679 | kfree(param->node_name); | |
366781c1 SF |
1680 | } |
1681 | } | |
1682 | ||
1683 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1684 | int number_of_items) | |
1685 | { | |
1686 | int i; | |
1687 | if ((number_of_items == 0) || (param == NULL)) | |
1688 | return; | |
1689 | for (i = 0; i < number_of_items; i++) { | |
1690 | kfree(param[i].path_name); | |
1691 | kfree(param[i].node_name); | |
1692 | } | |
1693 | kfree(param); | |
1694 | } | |
1695 | ||
9a66396f PS |
1696 | static inline bool is_interrupt_error(int error) |
1697 | { | |
1698 | switch (error) { | |
1699 | case -EINTR: | |
1700 | case -ERESTARTSYS: | |
1701 | case -ERESTARTNOHAND: | |
1702 | case -ERESTARTNOINTR: | |
1703 | return true; | |
1704 | } | |
1705 | return false; | |
1706 | } | |
1707 | ||
1708 | static inline bool is_retryable_error(int error) | |
1709 | { | |
1710 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1711 | return true; | |
1712 | return false; | |
1713 | } | |
1714 | ||
86f740f2 AA |
1715 | |
1716 | /* cifs_get_writable_file() flags */ | |
1717 | #define FIND_WR_ANY 0 | |
1718 | #define FIND_WR_FSUID_ONLY 1 | |
1719 | #define FIND_WR_WITH_DELETE 2 | |
1720 | ||
1da177e4 LT |
1721 | #define MID_FREE 0 |
1722 | #define MID_REQUEST_ALLOCATED 1 | |
1723 | #define MID_REQUEST_SUBMITTED 2 | |
1724 | #define MID_RESPONSE_RECEIVED 4 | |
1725 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1726 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1727 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1728 | |
38bd4906 SP |
1729 | /* Flags */ |
1730 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1731 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1732 | |
ec637e3f SF |
1733 | /* Types of response buffer returned from SendReceive2 */ |
1734 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1735 | #define CIFS_SMALL_BUFFER 1 | |
1736 | #define CIFS_LARGE_BUFFER 2 | |
1737 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1738 | |
133672ef | 1739 | /* Type of Request to SendReceive2 */ |
7749981e | 1740 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
392e1c5d | 1741 | #define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */ |
7749981e | 1742 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
133672ef SF |
1743 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1744 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
392e1c5d | 1745 | #define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */ |
133672ef | 1746 | |
a891f0f8 | 1747 | /* Type of request operation */ |
04ad69c3 PA |
1748 | #define CIFS_ECHO_OP 0x080 /* echo request */ |
1749 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
1750 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ | |
1751 | #define CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */ | |
0f56db83 | 1752 | /* Lower bitmask values are reserved by others below. */ |
04ad69c3 PA |
1753 | #define CIFS_SESS_OP 0x2000 /* session setup request */ |
1754 | #define CIFS_OP_MASK 0x2780 /* mask request type */ | |
7fb8986e | 1755 | |
04ad69c3 PA |
1756 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
1757 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ | |
1758 | #define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */ | |
a891f0f8 | 1759 | |
3979877e SF |
1760 | /* Security Flags: indicate type of session setup needed */ |
1761 | #define CIFSSEC_MAY_SIGN 0x00001 | |
3979877e SF |
1762 | #define CIFSSEC_MAY_NTLMV2 0x00004 |
1763 | #define CIFSSEC_MAY_KRB5 0x00008 | |
3979877e | 1764 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ |
ac683924 | 1765 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1766 | |
1767 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1768 | /* note that only one of the following can be set so the | |
1769 | result of setting MUST flags more than once will be to | |
1770 | require use of the stronger protocol */ | |
3979877e SF |
1771 | #define CIFSSEC_MUST_NTLMV2 0x04004 |
1772 | #define CIFSSEC_MUST_KRB5 0x08008 | |
0d3a01fa | 1773 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1774 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1775 | #else |
ac683924 | 1776 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1777 | #endif /* UPCALL */ |
3979877e | 1778 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ |
ac683924 | 1779 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1780 | |
896a8fc2 | 1781 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
76a3c92e RS |
1782 | #define CIFSSEC_MAX (CIFSSEC_MUST_NTLMV2) |
1783 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) | |
1da177e4 LT |
1784 | /* |
1785 | ***************************************************************** | |
1786 | * All constants go here | |
1787 | ***************************************************************** | |
1788 | */ | |
1789 | ||
1790 | #define UID_HASH (16) | |
1791 | ||
1792 | /* | |
1793 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1794 | * following to be declared. | |
1795 | */ | |
1796 | ||
1797 | /**************************************************************************** | |
1798 | * Locking notes. All updates to global variables and lists should be | |
1799 | * protected by spinlocks or semaphores. | |
1800 | * | |
1801 | * Spinlocks | |
1802 | * --------- | |
1803 | * GlobalMid_Lock protects: | |
1804 | * list operations on pending_mid_q and oplockQ | |
1805 | * updates to XID counters, multiplex id and SMB sequence numbers | |
65525802 | 1806 | * list operations on global DnotifyReqList |
01cf3082 | 1807 | * updates to ses->status and TCP_Server_Info->tcpStatus |
0fa757b5 | 1808 | * updates to server->CurrentMid |
3afca265 SF |
1809 | * tcp_ses_lock protects: |
1810 | * list operations on tcp and SMB session lists | |
1811 | * tcon->open_file_lock protects the list of open files hanging off the tcon | |
487317c9 | 1812 | * inode->open_file_lock protects the openFileList hanging off the inode |
3afca265 | 1813 | * cfile->file_info_lock protects counters and fields in cifs file struct |
1da177e4 LT |
1814 | * f_owner.lock protects certain per file struct operations |
1815 | * mapping->page_lock protects certain per page operations | |
1816 | * | |
487317c9 RS |
1817 | * Note that the cifs_tcon.open_file_lock should be taken before |
1818 | * not after the cifsInodeInfo.open_file_lock | |
1819 | * | |
1da177e4 LT |
1820 | * Semaphores |
1821 | * ---------- | |
edc9dd1e SF |
1822 | * cifsInodeInfo->lock_sem protects: |
1823 | * the list of locks held by the inode | |
1da177e4 LT |
1824 | * |
1825 | ****************************************************************************/ | |
1826 | ||
1827 | #ifdef DECLARE_GLOBALS_HERE | |
1828 | #define GLOBAL_EXTERN | |
1829 | #else | |
1830 | #define GLOBAL_EXTERN extern | |
1831 | #endif | |
1832 | ||
e7ddee90 JL |
1833 | /* |
1834 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1835 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1836 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1837 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1838 | * by iterating over cifs_tcp_ses_list |
1839 | */ | |
1840 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1841 | ||
f1987b44 JL |
1842 | /* |
1843 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1844 | * tcp session, and the list of tcon's per smb session. It also protects | |
d92c7ce4 SF |
1845 | * the reference counters for the server, smb session, and tcon. It also |
1846 | * protects some fields in the TCP_Server_Info struct such as dstaddr. Finally, | |
f1987b44 | 1847 | * changes to the tcon->tidStatus should be done while holding this lock. |
3afca265 SF |
1848 | * generally the locks should be taken in order tcp_ses_lock before |
1849 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1850 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1851 | */ |
3f9bcca7 | 1852 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1853 | |
1da177e4 LT |
1854 | /* |
1855 | * Global transaction id (XID) information | |
1856 | */ | |
1857 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1858 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1859 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1860 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1861 | /* on midQ entries */ | |
1da177e4 LT |
1862 | /* |
1863 | * Global counters, updated atomically | |
1864 | */ | |
1865 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1866 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
6d82c27a | 1867 | GLOBAL_EXTERN atomic_t tcpSesNextId; |
1da177e4 LT |
1868 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; |
1869 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1870 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1871 | ||
aaa9bbe0 | 1872 | /* Various Debug counters */ |
4498eed5 SF |
1873 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1874 | #ifdef CONFIG_CIFS_STATS2 | |
1875 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1876 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
00778e22 | 1877 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 SF |
1878 | #endif |
1879 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1880 | GLOBAL_EXTERN atomic_t midCount; |
1881 | ||
1882 | /* Misc globals */ | |
f92a720e SF |
1883 | extern bool enable_oplocks; /* enable or disable oplocks */ |
1884 | extern bool lookupCacheEnabled; | |
1885 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 1886 | with more secure ntlmssp2 challenge/resp */ |
f92a720e | 1887 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
29e27923 | 1888 | extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */ |
fbfd0b46 | 1889 | extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */ |
53d31a3f | 1890 | extern bool enable_negotiate_signing; /* request use of faster (GMAC) signing if available */ |
f92a720e SF |
1891 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
1892 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1893 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1894 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
1895 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1896 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ | |
1da177e4 | 1897 | |
9b646972 | 1898 | void cifs_oplock_break(struct work_struct *work); |
b98749ca | 1899 | void cifs_queue_oplock_break(struct cifsFileInfo *cfile); |
c3f207ab | 1900 | void smb2_deferred_work_close(struct work_struct *work); |
3b7433b8 | 1901 | |
c3f207ab | 1902 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1903 | extern struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 1904 | extern struct workqueue_struct *decrypt_wq; |
32546a95 | 1905 | extern struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 1906 | extern struct workqueue_struct *cifsoplockd_wq; |
c3f207ab | 1907 | extern struct workqueue_struct *deferredclose_wq; |
3d22462a | 1908 | extern __u32 cifs_lock_secret; |
abd2e44d | 1909 | |
2dc7e1c0 PS |
1910 | extern mempool_t *cifs_mid_poolp; |
1911 | ||
23db65f5 JL |
1912 | /* Operations for different SMB versions */ |
1913 | #define SMB1_VERSION_STRING "1.0" | |
1914 | extern struct smb_version_operations smb1_operations; | |
1915 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1916 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1917 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1918 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1919 | #define SMB21_VERSION_STRING "2.1" |
1920 | extern struct smb_version_operations smb21_operations; | |
1921 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
1922 | #define SMBDEFAULT_VERSION_STRING "default" |
1923 | extern struct smb_version_values smbdefault_values; | |
1924 | #define SMB3ANY_VERSION_STRING "3" | |
1925 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 1926 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1927 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1928 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 1929 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 1930 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
1931 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
1932 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1933 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1934 | #define ALT_SMB311_VERSION_STRING "3.11" |
1935 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1936 | extern struct smb_version_values smb311_values; |
b8f7442b | 1937 | |
0b0430c6 K |
1938 | static inline char *get_security_type_str(enum securityEnum sectype) |
1939 | { | |
1940 | switch (sectype) { | |
1941 | case RawNTLMSSP: | |
1942 | return "RawNTLMSSP"; | |
1943 | case Kerberos: | |
1944 | return "Kerberos"; | |
1945 | case NTLMv2: | |
1946 | return "NTLMv2"; | |
0b0430c6 K |
1947 | default: |
1948 | return "Unknown"; | |
1949 | } | |
1950 | } | |
1951 | ||
b8f7442b AA |
1952 | static inline bool is_smb1_server(struct TCP_Server_Info *server) |
1953 | { | |
1954 | return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0; | |
1955 | } | |
1956 | ||
e183785f PA |
1957 | static inline bool is_tcon_dfs(struct cifs_tcon *tcon) |
1958 | { | |
1959 | /* | |
1960 | * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS | |
1961 | * Subsystem Notifies That a Share Is a DFS Share. | |
1962 | * | |
1963 | * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server | |
1964 | * Application Updates a Share. | |
1965 | */ | |
1966 | if (!tcon || !tcon->ses || !tcon->ses->server) | |
1967 | return false; | |
1968 | return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS : | |
1969 | tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT); | |
1970 | } | |
1971 | ||
c88f7dcd PA |
1972 | static inline bool cifs_is_referral_server(struct cifs_tcon *tcon, |
1973 | const struct dfs_info3_param *ref) | |
1974 | { | |
1975 | /* | |
1976 | * Check if all targets are capable of handling DFS referrals as per | |
1977 | * MS-DFSC 2.2.4 RESP_GET_DFS_REFERRAL. | |
1978 | */ | |
1979 | return is_tcon_dfs(tcon) || (ref && (ref->flags & DFSREF_REFERRAL_SERVER)); | |
1980 | } | |
1981 | ||
abd2e44d | 1982 | #endif /* _CIFS_GLOB_H */ |