Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
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 LT |
7 | * |
8 | * This library is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as published | |
10 | * by the Free Software Foundation; either version 2.1 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | * the GNU Lesser General Public License for more details. | |
d38d8c74 | 17 | * |
1da177e4 | 18 | */ |
abd2e44d SJ |
19 | #ifndef _CIFS_GLOB_H |
20 | #define _CIFS_GLOB_H | |
21 | ||
1da177e4 LT |
22 | #include <linux/in.h> |
23 | #include <linux/in6.h> | |
b438fcf1 | 24 | #include <linux/inet.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
2dc7e1c0 | 26 | #include <linux/mempool.h> |
9b646972 | 27 | #include <linux/workqueue.h> |
1da177e4 | 28 | #include "cifs_fs_sb.h" |
442aa310 | 29 | #include "cifsacl.h" |
d2b91521 SP |
30 | #include <crypto/internal/hash.h> |
31 | #include <linux/scatterlist.h> | |
8c3a2b4c | 32 | #include <uapi/linux/cifs/cifs_mount.h> |
d60622eb | 33 | #include "smb2pdu.h" |
d2b91521 | 34 | |
76ec5e33 PS |
35 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ |
36 | ||
8d8b26e5 | 37 | #define SMB_PATH_MAX 260 |
e2292430 AA |
38 | #define CIFS_PORT 445 |
39 | #define RFC1001_PORT 139 | |
40 | ||
1da177e4 LT |
41 | /* |
42 | * The sizes of various internal tables and strings | |
43 | */ | |
44 | #define MAX_UID_INFO 16 | |
45 | #define MAX_SES_INFO 2 | |
46 | #define MAX_TCON_INFO 4 | |
47 | ||
cdf1246f | 48 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
49 | |
50 | #define CIFS_MIN_RCV_POOL 4 | |
51 | ||
2c0c2a08 | 52 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
53 | /* |
54 | * default attribute cache timeout (jiffies) | |
55 | */ | |
56 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
57 | ||
58 | /* | |
59 | * max attribute cache timeout (jiffies) - 2^30 | |
60 | */ | |
61 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
62 | ||
ca567eb2 SF |
63 | /* |
64 | * Max persistent and resilient handle timeout (milliseconds). | |
65 | * Windows durable max was 960000 (16 minutes) | |
66 | */ | |
67 | #define SMB3_MAX_HANDLE_TIMEOUT 960000 | |
68 | ||
1da177e4 LT |
69 | /* |
70 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 71 | * on one socket concurrently. |
1da177e4 | 72 | */ |
10b9b98e | 73 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 74 | |
8ecaf67a JL |
75 | #define RFC1001_NAME_LEN 15 |
76 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
77 | ||
b327a717 AA |
78 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
79 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
80 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
81 | ||
adfeb3e0 SF |
82 | /* echo interval in seconds */ |
83 | #define SMB_ECHO_INTERVAL_MIN 1 | |
84 | #define SMB_ECHO_INTERVAL_MAX 600 | |
85 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 86 | |
b24df3e3 RS |
87 | /* maximum number of PDUs in one compound */ |
88 | #define MAX_COMPOUND 5 | |
89 | ||
141891f4 SF |
90 | /* |
91 | * Default number of credits to keep available for SMB3. | |
92 | * This value is chosen somewhat arbitrarily. The Windows client | |
93 | * defaults to 128 credits, the Windows server allows clients up to | |
94 | * 512 credits (or 8K for later versions), and the NetApp server | |
95 | * does not limit clients at all. Choose a high enough default value | |
96 | * such that the client shouldn't limit performance, but allow mount | |
97 | * to override (until you approach 64K, where we limit credits to 65000 | |
98 | * to reduce possibility of seeing more server credit overflow bugs. | |
99 | */ | |
100 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
101 | ||
1da177e4 LT |
102 | #include "cifspdu.h" |
103 | ||
1da177e4 LT |
104 | #ifndef XATTR_DOS_ATTRIB |
105 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
106 | #endif | |
107 | ||
1da177e4 LT |
108 | /* |
109 | * CIFS vfs client Status information (based on what we know.) | |
110 | */ | |
111 | ||
6c0f6218 | 112 | /* associated with each tcp and smb session */ |
1da177e4 LT |
113 | enum statusEnum { |
114 | CifsNew = 0, | |
115 | CifsGood, | |
116 | CifsExiting, | |
fd88ce93 SF |
117 | CifsNeedReconnect, |
118 | CifsNeedNegotiate | |
1da177e4 LT |
119 | }; |
120 | ||
121 | enum securityEnum { | |
515d82ff JL |
122 | Unspecified = 0, /* not specified */ |
123 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 124 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 125 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 126 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 127 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
128 | }; |
129 | ||
5f98ca9a | 130 | struct session_key { |
b609f06a | 131 | unsigned int len; |
21e73393 | 132 | char *response; |
b609f06a SF |
133 | }; |
134 | ||
d2b91521 SP |
135 | /* crypto security descriptor definition */ |
136 | struct sdesc { | |
137 | struct shash_desc shash; | |
138 | char ctx[]; | |
139 | }; | |
140 | ||
f7c5445a | 141 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
142 | struct cifs_secmech { |
143 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
144 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 145 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 146 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
5fcd7f3f | 147 | struct crypto_shash *sha512; /* sha512 hash function */ |
d2b91521 SP |
148 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
149 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 150 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 151 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
5fcd7f3f | 152 | struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ |
026e93dc PS |
153 | struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ |
154 | struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ | |
d2b91521 SP |
155 | }; |
156 | ||
d3686d54 | 157 | /* per smb session structure/fields */ |
d2b91521 | 158 | struct ntlmssp_auth { |
5c234aa5 | 159 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
160 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
161 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
162 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 163 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
164 | }; |
165 | ||
442aa310 SF |
166 | struct cifs_cred { |
167 | int uid; | |
168 | int gid; | |
169 | int mode; | |
170 | int cecount; | |
171 | struct cifs_sid osid; | |
172 | struct cifs_sid gsid; | |
173 | struct cifs_ntace *ntaces; | |
174 | struct cifs_ace *aces; | |
175 | }; | |
176 | ||
1da177e4 LT |
177 | /* |
178 | ***************************************************************** | |
179 | * Except the CIFS PDUs themselves all the | |
180 | * globally interesting structs should go here | |
181 | ***************************************************************** | |
182 | */ | |
183 | ||
bf5ea0e2 JL |
184 | /* |
185 | * A smb_rqst represents a complete request to be issued to a server. It's | |
186 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
187 | * to start at the beginning of the first page. | |
188 | */ | |
189 | struct smb_rqst { | |
190 | struct kvec *rq_iov; /* array of kvecs */ | |
191 | unsigned int rq_nvec; /* number of kvecs in array */ | |
192 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
57a929a6 | 193 | unsigned int rq_offset; /* the offset to the 1st page */ |
bf5ea0e2 JL |
194 | unsigned int rq_npages; /* number pages in array */ |
195 | unsigned int rq_pagesz; /* page size to use */ | |
196 | unsigned int rq_tailsz; /* length of last page */ | |
197 | }; | |
198 | ||
121b046a JL |
199 | struct mid_q_entry; |
200 | struct TCP_Server_Info; | |
55157dfb | 201 | struct cifsFileInfo; |
082d0642 | 202 | struct cifs_ses; |
2e6e02ab | 203 | struct cifs_tcon; |
b669f33c | 204 | struct dfs_info3_param; |
1208ef1f | 205 | struct cifs_fattr; |
3fa1c6d1 | 206 | struct smb3_fs_context; |
fb1214e4 | 207 | struct cifs_fid; |
fc9c5966 | 208 | struct cifs_readdata; |
c9de5c80 | 209 | struct cifs_writedata; |
f9c6e234 | 210 | struct cifs_io_parms; |
92fc65a7 | 211 | struct cifs_search_info; |
95a3f2f3 | 212 | struct cifsInodeInfo; |
226730b4 | 213 | struct cifs_open_parms; |
335b7b62 | 214 | struct cifs_credits; |
121b046a | 215 | |
23db65f5 | 216 | struct smb_version_operations { |
fb2036d8 | 217 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 218 | struct mid_q_entry *); |
55157dfb | 219 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 220 | /* setup request: allocate mid, sign message */ |
fec344e3 | 221 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
f780bd3f AA |
222 | struct TCP_Server_Info *, |
223 | struct smb_rqst *); | |
45740847 | 224 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
225 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
226 | struct smb_rqst *); | |
082d0642 PS |
227 | /* check response: verify signature, map error */ |
228 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
229 | bool); | |
335b7b62 PS |
230 | void (*add_credits)(struct TCP_Server_Info *server, |
231 | const struct cifs_credits *credits, | |
232 | const int optype); | |
45275789 | 233 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
234 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
235 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 236 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
c781af7e PS |
237 | void (*revert_current_mid)(struct TCP_Server_Info *server, |
238 | const unsigned int val); | |
eb378711 PS |
239 | /* data offset from read response message */ |
240 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
241 | /* |
242 | * Data length from read response message | |
243 | * When in_remaining is true, the returned data length is in | |
244 | * message field DataRemaining for out-of-band data read (e.g through | |
245 | * Memory Registration RDMA write in SMBD). | |
246 | * Otherwise, the returned data length is in message field DataLength. | |
247 | */ | |
248 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
249 | /* map smb to linux error */ |
250 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
251 | /* find mid corresponding to the response message */ |
252 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 253 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
254 | void (*clear_stats)(struct cifs_tcon *); |
255 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 256 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 257 | /* verify the message */ |
373512ec | 258 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 259 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
04ad69c3 | 260 | int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *); |
9bd45408 PS |
261 | void (*downgrade_oplock)(struct TCP_Server_Info *server, |
262 | struct cifsInodeInfo *cinode, __u32 oplock, | |
263 | unsigned int epoch, bool *purge_cache); | |
316cf94a PS |
264 | /* process transaction2 response */ |
265 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
266 | char *, int); | |
286170aa PS |
267 | /* check if we need to negotiate */ |
268 | bool (*need_neg)(struct TCP_Server_Info *); | |
269 | /* negotiate to the server */ | |
270 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 | 271 | /* set negotiated write size */ |
3fa1c6d1 | 272 | unsigned int (*negotiate_wsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
24985c53 | 273 | /* set negotiated read size */ |
3fa1c6d1 | 274 | unsigned int (*negotiate_rsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
58c45c58 PS |
275 | /* setup smb sessionn */ |
276 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
277 | const struct nls_table *); | |
278 | /* close smb session */ | |
279 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
280 | /* connect to a server share */ |
281 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
282 | struct cifs_tcon *, const struct nls_table *); | |
283 | /* close tree connecion */ | |
284 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
285 | /* get DFS referrals */ |
286 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
287 | const char *, struct dfs_info3_param **, | |
288 | unsigned int *, const struct nls_table *, int); | |
af4281dc | 289 | /* informational QFS call */ |
0f060936 AG |
290 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *, |
291 | struct cifs_sb_info *); | |
68889f26 PS |
292 | /* check if a path is accessible or not */ |
293 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
294 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
295 | /* query path data from the server */ |
296 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
297 | struct cifs_sb_info *, const char *, | |
eb85d94b | 298 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
299 | /* query file data from the server */ |
300 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
301 | struct cifs_fid *, FILE_ALL_INFO *); | |
2e4564b3 SF |
302 | /* query reparse tag from srv to determine which type of special file */ |
303 | int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon, | |
304 | struct cifs_sb_info *cifs_sb, const char *path, | |
305 | __u32 *reparse_tag); | |
1208ef1f PS |
306 | /* get server index number */ |
307 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
308 | struct cifs_sb_info *, const char *, | |
309 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
310 | /* set size by path */ |
311 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
312 | const char *, __u64, struct cifs_sb_info *, bool); | |
313 | /* set size by file handle */ | |
314 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
315 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
316 | /* set attributes */ |
317 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
318 | const unsigned int); | |
64a5cfa6 SF |
319 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
320 | struct cifsFileInfo *); | |
f6d76178 PS |
321 | /* check if we can send an echo or nor */ |
322 | bool (*can_echo)(struct TCP_Server_Info *); | |
323 | /* send echo request */ | |
324 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 325 | /* create directory */ |
bea851b8 SF |
326 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
327 | umode_t mode, struct cifs_tcon *tcon, | |
328 | const char *full_path, | |
329 | struct cifs_sb_info *cifs_sb); | |
c3ca78e2 SF |
330 | int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode, |
331 | struct cifs_tcon *tcon, const char *name, | |
332 | struct cifs_sb_info *sb); | |
f436720e PS |
333 | /* set info on created directory */ |
334 | void (*mkdir_setinfo)(struct inode *, const char *, | |
335 | struct cifs_sb_info *, struct cifs_tcon *, | |
336 | const unsigned int); | |
f958ca5d PS |
337 | /* remove directory */ |
338 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
339 | struct cifs_sb_info *); | |
ed6875e0 PS |
340 | /* unlink file */ |
341 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
342 | struct cifs_sb_info *); | |
343 | /* open, rename and delete file */ | |
344 | int (*rename_pending_delete)(const char *, struct dentry *, | |
345 | const unsigned int); | |
8ceb9843 PS |
346 | /* send rename request */ |
347 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
348 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
349 | /* send create hardlink request */ |
350 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
351 | const char *, const char *, | |
352 | struct cifs_sb_info *); | |
b42bf888 PS |
353 | /* query symlink target */ |
354 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
ebaf546a RS |
355 | struct cifs_sb_info *, const char *, |
356 | char **, bool); | |
fb1214e4 | 357 | /* open a file for non-posix mounts */ |
226730b4 PS |
358 | int (*open)(const unsigned int, struct cifs_open_parms *, |
359 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
360 | /* set fid protocol-specific info */ |
361 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 362 | /* close a file */ |
760ad0ca PS |
363 | void (*close)(const unsigned int, struct cifs_tcon *, |
364 | struct cifs_fid *); | |
43f8a6a7 SF |
365 | /* close a file, returning file attributes and timestamps */ |
366 | void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon, | |
367 | struct cifsFileInfo *pfile_info); | |
1d8c4c00 PS |
368 | /* send a flush request to the server */ |
369 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
370 | /* async read from the server */ |
371 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 372 | /* async write to the server */ |
4a5c80d7 SF |
373 | int (*async_writev)(struct cifs_writedata *, |
374 | void (*release)(struct kref *)); | |
f9c6e234 | 375 | /* sync read from the server */ |
db8b631d | 376 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
377 | struct cifs_io_parms *, unsigned int *, char **, |
378 | int *); | |
ba9ad725 | 379 | /* sync write to the server */ |
db8b631d | 380 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
381 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
382 | unsigned long); | |
92fc65a7 PS |
383 | /* open dir, start readdir */ |
384 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
385 | const char *, struct cifs_sb_info *, | |
386 | struct cifs_fid *, __u16, | |
387 | struct cifs_search_info *); | |
388 | /* continue readdir */ | |
389 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
390 | struct cifs_fid *, | |
391 | __u16, struct cifs_search_info *srch_inf); | |
392 | /* close dir */ | |
393 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
394 | struct cifs_fid *); | |
395 | /* calculate a size of SMB message */ | |
9ec672bd | 396 | unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi); |
66265f13 PS |
397 | /* check for STATUS_PENDING and process the response if yes */ |
398 | bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); | |
511c54a2 PS |
399 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
400 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
401 | /* send oplock break response */ |
402 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
403 | struct cifsInodeInfo *); | |
76ec5e33 PS |
404 | /* query remote filesystem */ |
405 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
0f060936 | 406 | struct cifs_sb_info *, struct kstatfs *); |
d39a4f71 PS |
407 | /* send mandatory brlock to the server */ |
408 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
409 | __u64, __u32, int, int, bool); | |
410 | /* unlock range of mandatory locks */ | |
411 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
412 | const unsigned int); | |
413 | /* push brlocks from the cache to the server */ | |
414 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 415 | /* get lease key of the inode */ |
a41a28bd | 416 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 417 | /* set lease key of the inode */ |
a41a28bd | 418 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 419 | /* generate new lease key */ |
a41a28bd | 420 | void (*new_lease_key)(struct cifs_fid *); |
32811d24 | 421 | int (*generate_signingkey)(struct cifs_ses *); |
eda1c54f LL |
422 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *, |
423 | bool allocate_crypto); | |
b3152e2c SF |
424 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
425 | struct cifsFileInfo *src_file); | |
834170c8 SF |
426 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
427 | struct cifsFileInfo *src_file, void __user *); | |
d26c2ddd SF |
428 | int (*notify)(const unsigned int xid, struct file *pfile, |
429 | void __user *pbuf); | |
b5be1a1c SP |
430 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
431 | struct cifs_sb_info *, const unsigned char *, | |
432 | char *, unsigned int *); | |
cbb0aba6 SP |
433 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
434 | struct cifs_sb_info *, const unsigned char *, | |
435 | char *, unsigned int *); | |
53ef1016 PS |
436 | /* if we can do cache read operations */ |
437 | bool (*is_read_op)(__u32); | |
438 | /* set oplock level for the inode */ | |
42873b0a PS |
439 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
440 | bool *); | |
a41a28bd | 441 | /* create lease context buffer for CREATE request */ |
729c0c9d | 442 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 443 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 444 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 445 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 446 | struct cifsFileInfo *src_file, |
620d8745 SP |
447 | struct cifsFileInfo *target_file, |
448 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
449 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
450 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
451 | u64 dest_off); | |
ff1c038a | 452 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
453 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
454 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 455 | size_t, struct cifs_sb_info *); |
666753c3 SF |
456 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
457 | const char *, const void *, const __u16, | |
5517554e | 458 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 | 459 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
3970acf7 | 460 | const char *, u32 *, u32); |
42eacf9e | 461 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
3970acf7 | 462 | const struct cifs_fid *, u32 *, u32); |
83e3bc23 SF |
463 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
464 | int); | |
7f6c5008 PS |
465 | /* writepages retry size */ |
466 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
467 | /* get mtu credits */ |
468 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
335b7b62 | 469 | unsigned int *, struct cifs_credits *); |
9a1c67e8 PS |
470 | /* adjust previously taken mtu credits to request size */ |
471 | int (*adjust_credits)(struct TCP_Server_Info *server, | |
472 | struct cifs_credits *credits, | |
473 | const unsigned int payload_size); | |
52755808 PS |
474 | /* check if we need to issue closedir */ |
475 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
476 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
477 | loff_t); | |
7fb8986e | 478 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
479 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
480 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
481 | int (*is_transform_hdr)(void *buf); |
482 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 483 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
484 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
485 | enum securityEnum); | |
8ce79ec3 | 486 | int (*next_header)(char *); |
f5b05d62 RS |
487 | /* ioctl passthrough for query_info */ |
488 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 | 489 | struct cifs_tcon *tcon, |
0f060936 | 490 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 491 | __le16 *path, int is_dir, |
f5b05d62 | 492 | unsigned long p); |
c847dccf AA |
493 | /* make unix special files (block, char, fifo, socket) */ |
494 | int (*make_node)(unsigned int xid, | |
495 | struct inode *inode, | |
496 | struct dentry *dentry, | |
497 | struct cifs_tcon *tcon, | |
498 | char *full_path, | |
499 | umode_t mode, | |
500 | dev_t device_number); | |
2f3ebaba RS |
501 | /* version specific fiemap implementation */ |
502 | int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *, | |
503 | struct fiemap_extent_info *, u64, u64); | |
dece44e3 RS |
504 | /* version specific llseek implementation */ |
505 | loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int); | |
8e670f77 RS |
506 | /* Check for STATUS_IO_TIMEOUT */ |
507 | bool (*is_status_io_timeout)(char *buf); | |
9e550b08 RS |
508 | /* Check for STATUS_NETWORK_NAME_DELETED */ |
509 | void (*is_network_name_deleted)(char *buf, struct TCP_Server_Info *srv); | |
23db65f5 JL |
510 | }; |
511 | ||
512 | struct smb_version_values { | |
513 | char *version_string; | |
e4aa25e7 SF |
514 | __u16 protocol_id; |
515 | __u32 req_capabilities; | |
106dc538 PS |
516 | __u32 large_lock_type; |
517 | __u32 exclusive_lock_type; | |
518 | __u32 shared_lock_type; | |
519 | __u32 unlock_lock_type; | |
93012bf9 | 520 | size_t header_preamble_size; |
1887f601 PS |
521 | size_t header_size; |
522 | size_t max_header_size; | |
eb378711 | 523 | size_t read_rsp_size; |
2dc7e1c0 | 524 | __le16 lock_cmd; |
29e20f9c PS |
525 | unsigned int cap_unix; |
526 | unsigned int cap_nt_find; | |
527 | unsigned int cap_large_files; | |
50285882 JL |
528 | __u16 signing_enabled; |
529 | __u16 signing_required; | |
a41a28bd | 530 | size_t create_lease_size; |
23db65f5 JL |
531 | }; |
532 | ||
1887f601 PS |
533 | #define HEADER_SIZE(server) (server->vals->header_size) |
534 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
535 | ||
d070f9dd AA |
536 | /** |
537 | * CIFS superblock mount flags (mnt_cifs_flags) to consider when | |
538 | * trying to reuse existing superblock for a new mount | |
539 | */ | |
25c7f41e PS |
540 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
541 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
542 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 543 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
544 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
545 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
546 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
547 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
548 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 | 549 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
d070f9dd | 550 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ |
6552d6a0 | 551 | CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ |
83bbfa70 | 552 | CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ |
41e033fe | 553 | CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) |
25c7f41e | 554 | |
d070f9dd AA |
555 | /** |
556 | * Generic VFS superblock mount flags (s_flags) to consider when | |
557 | * trying to reuse existing superblock for a new mount | |
558 | */ | |
1751e8a6 LT |
559 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
560 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
561 | |
562 | struct cifs_mnt_data { | |
563 | struct cifs_sb_info *cifs_sb; | |
3fa1c6d1 | 564 | struct smb3_fs_context *ctx; |
25c7f41e PS |
565 | int flags; |
566 | }; | |
567 | ||
792af7b0 PS |
568 | static inline unsigned int |
569 | get_rfc1002_length(void *buf) | |
570 | { | |
dca1c8d1 | 571 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
572 | } |
573 | ||
ec2e4523 PS |
574 | static inline void |
575 | inc_rfc1001_len(void *buf, int count) | |
576 | { | |
577 | be32_add_cpu((__be32 *)buf, count); | |
578 | } | |
579 | ||
1da177e4 | 580 | struct TCP_Server_Info { |
3b795210 SF |
581 | struct list_head tcp_ses_list; |
582 | struct list_head smb_ses_list; | |
6d82c27a | 583 | __u64 conn_id; /* connection identifier (useful for debugging) */ |
e7ddee90 | 584 | int srv_count; /* reference counter */ |
a10faeb2 | 585 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 586 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
587 | struct smb_version_operations *ops; |
588 | struct smb_version_values *vals; | |
c3dccf48 | 589 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 590 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 591 | struct socket *ssocket; |
a9f1b85e | 592 | struct sockaddr_storage dstaddr; |
3eb9a889 | 593 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
594 | #ifdef CONFIG_NET_NS |
595 | struct net *net; | |
596 | #endif | |
d38d8c74 | 597 | wait_queue_head_t response_q; |
1da177e4 LT |
598 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
599 | struct list_head pending_mid_q; | |
edf1ae40 SF |
600 | bool noblocksnd; /* use blocking sendmsg */ |
601 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 602 | bool tcp_nodelay; |
141891f4 SF |
603 | unsigned int credits; /* send no more requests at once */ |
604 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 605 | unsigned int in_flight; /* number of requests on the wire to server */ |
1b63f184 | 606 | unsigned int max_in_flight; /* max number of requests that were on wire */ |
2d86dbc9 | 607 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 608 | struct mutex srv_mutex; |
1da177e4 LT |
609 | struct task_struct *tsk; |
610 | char server_GUID[16]; | |
286170aa | 611 | __u16 sec_mode; |
38d77c50 | 612 | bool sign; /* is signing enabled on this connection? */ |
4f5c10f1 | 613 | bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */ |
c3dccf48 | 614 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
615 | int echo_credits; /* echo reserved slots */ |
616 | int oplock_credits; /* oplock break reserved slots */ | |
617 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 618 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 619 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 620 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
621 | unsigned int maxReq; /* Clients should submit no more */ |
622 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 623 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
624 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
625 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
626 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
627 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 628 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
629 | /* message size the server can send or receive for */ |
630 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 631 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 632 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 633 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 634 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 635 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 636 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 637 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 638 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 639 | struct session_key session_key; |
3a5ff61c | 640 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 641 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
642 | #define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ |
643 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ | |
644 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
645 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 646 | /* extended security flavors that server supports */ |
c3dccf48 JL |
647 | bool sec_ntlmssp; /* supports NTLMSSP */ |
648 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
649 | bool sec_kerberos; /* supports plain Kerberos */ |
650 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 651 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
652 | /* use SMBD connection instead of socket */ |
653 | bool rdma; | |
654 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
655 | struct smbd_connection *smbd_conn; | |
c74093b6 | 656 | struct delayed_work echo; /* echo ping workqueue job */ |
2a37ef94 JL |
657 | char *smallbuf; /* pointer to current "small" buffer */ |
658 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
659 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
660 | unsigned int pdu_size; | |
2a37ef94 | 661 | unsigned int total_read; /* total amount of data read in this pass */ |
1ae9a5a5 SF |
662 | atomic_t in_send; /* requests trying to send */ |
663 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
488f1d2d SJ |
664 | #ifdef CONFIG_CIFS_FSCACHE |
665 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
666 | #endif | |
c3dccf48 | 667 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 | 668 | atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */ |
468d6779 | 669 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
433b8dd7 SF |
670 | __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */ |
671 | __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
672 | __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
468d6779 | 673 | #endif /* STATS2 */ |
ec2e4523 PS |
674 | unsigned int max_read; |
675 | unsigned int max_write; | |
563317ec | 676 | unsigned int min_offload; |
26ea888f | 677 | __le16 compress_algorithm; |
5100d8a3 | 678 | __le16 cipher_type; |
8bd68c6e AA |
679 | /* save initital negprot hash */ |
680 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
fcef0db6 | 681 | bool posix_ext_supported; |
53e0e11e PS |
682 | struct delayed_work reconnect; /* reconnect workqueue job */ |
683 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 684 | unsigned long echo_interval; |
93d5cb51 PA |
685 | |
686 | /* | |
687 | * Number of targets available for reconnect. The more targets | |
688 | * the more tasks have to wait to let the demultiplex thread | |
689 | * reconnect. | |
690 | */ | |
691 | int nr_targets; | |
8eecd1c2 | 692 | bool noblockcnt; /* use non-blocking connect() */ |
3345bb44 | 693 | bool is_channel; /* if a session channel */ |
121d947d SC |
694 | #ifdef CONFIG_CIFS_SWN_UPCALL |
695 | bool use_swn_dstaddr; | |
696 | struct sockaddr_storage swn_dstaddr; | |
697 | #endif | |
1da177e4 LT |
698 | }; |
699 | ||
335b7b62 PS |
700 | struct cifs_credits { |
701 | unsigned int value; | |
702 | unsigned int instance; | |
703 | }; | |
704 | ||
fc40f9cf PS |
705 | static inline unsigned int |
706 | in_flight(struct TCP_Server_Info *server) | |
707 | { | |
708 | unsigned int num; | |
709 | spin_lock(&server->req_lock); | |
710 | num = server->in_flight; | |
711 | spin_unlock(&server->req_lock); | |
712 | return num; | |
713 | } | |
714 | ||
2d86dbc9 | 715 | static inline bool |
b227d215 | 716 | has_credits(struct TCP_Server_Info *server, int *credits, int num_credits) |
fc40f9cf | 717 | { |
2d86dbc9 | 718 | int num; |
fc40f9cf | 719 | spin_lock(&server->req_lock); |
bc205ed1 | 720 | num = *credits; |
fc40f9cf | 721 | spin_unlock(&server->req_lock); |
b227d215 | 722 | return num >= num_credits; |
fc40f9cf PS |
723 | } |
724 | ||
45275789 | 725 | static inline void |
34f4deb7 | 726 | add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, |
a891f0f8 | 727 | const int optype) |
45275789 | 728 | { |
34f4deb7 | 729 | server->ops->add_credits(server, credits, optype); |
45275789 PS |
730 | } |
731 | ||
cb7e9eab | 732 | static inline void |
335b7b62 PS |
733 | add_credits_and_wake_if(struct TCP_Server_Info *server, |
734 | const struct cifs_credits *credits, const int optype) | |
cb7e9eab | 735 | { |
335b7b62 PS |
736 | if (credits->value) { |
737 | server->ops->add_credits(server, credits, optype); | |
cb7e9eab PS |
738 | wake_up(&server->request_q); |
739 | } | |
740 | } | |
741 | ||
45275789 PS |
742 | static inline void |
743 | set_credits(struct TCP_Server_Info *server, const int val) | |
744 | { | |
745 | server->ops->set_credits(server, val); | |
746 | } | |
747 | ||
9a1c67e8 PS |
748 | static inline int |
749 | adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, | |
750 | const unsigned int payload_size) | |
751 | { | |
752 | return server->ops->adjust_credits ? | |
753 | server->ops->adjust_credits(server, credits, payload_size) : 0; | |
754 | } | |
755 | ||
9235d098 | 756 | static inline __le64 |
3d378d3f | 757 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 758 | { |
9235d098 | 759 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
760 | } |
761 | ||
3d378d3f TG |
762 | static inline __le16 |
763 | get_next_mid(struct TCP_Server_Info *server) | |
764 | { | |
9235d098 | 765 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
766 | /* |
767 | * The value in the SMB header should be little endian for easy | |
768 | * on-the-wire decoding. | |
769 | */ | |
770 | return cpu_to_le16(mid); | |
771 | } | |
772 | ||
c781af7e PS |
773 | static inline void |
774 | revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
775 | { | |
776 | if (server->ops->revert_current_mid) | |
777 | server->ops->revert_current_mid(server, val); | |
778 | } | |
779 | ||
780 | static inline void | |
781 | revert_current_mid_from_hdr(struct TCP_Server_Info *server, | |
782 | const struct smb2_sync_hdr *shdr) | |
783 | { | |
784 | unsigned int num = le16_to_cpu(shdr->CreditCharge); | |
785 | ||
786 | return revert_current_mid(server, num > 0 ? num : 1); | |
787 | } | |
788 | ||
3d378d3f TG |
789 | static inline __u16 |
790 | get_mid(const struct smb_hdr *smb) | |
791 | { | |
792 | return le16_to_cpu(smb->Mid); | |
793 | } | |
794 | ||
795 | static inline bool | |
796 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
797 | { | |
798 | return mid == le16_to_cpu(smb->Mid); | |
799 | } | |
800 | ||
24985c53 PS |
801 | /* |
802 | * When the server supports very large reads and writes via POSIX extensions, | |
803 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
804 | * including the RFC1001 length. | |
805 | * | |
806 | * Note that this might make for "interesting" allocation problems during | |
807 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 808 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
809 | * |
810 | * For reads, there is a similar problem as we need to allocate an array | |
811 | * of kvecs to handle the receive, though that should only need to be done | |
812 | * once. | |
813 | */ | |
814 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
815 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
816 | ||
817 | /* | |
818 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
819 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
820 | * write up to the maximum size described by RFC1002. | |
821 | */ | |
822 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
823 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
824 | ||
825 | /* | |
826 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
ea1754a0 | 827 | * pages in a single call. With PAGE_SIZE == 4k, this means we can fill |
24985c53 PS |
828 | * a single wsize request with a single call. |
829 | */ | |
830 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
3d621230 | 831 | #define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024) |
24985c53 PS |
832 | |
833 | /* | |
834 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
835 | * those values when posix extensions aren't in force. In actuality here, we | |
836 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
837 | * to be ok with the extra byte even though Windows doesn't send writes that | |
838 | * are that large. | |
839 | * | |
840 | * Citation: | |
841 | * | |
cba22b1c | 842 | * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx |
24985c53 PS |
843 | */ |
844 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
845 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
846 | ||
f1d0c998 RL |
847 | /* |
848 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
849 | * when CONFIG_NET_NS isn't set. | |
850 | */ | |
851 | ||
852 | #ifdef CONFIG_NET_NS | |
853 | ||
854 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
855 | { | |
856 | return srv->net; | |
857 | } | |
858 | ||
859 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
860 | { | |
861 | srv->net = net; | |
862 | } | |
863 | ||
864 | #else | |
865 | ||
866 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
867 | { | |
868 | return &init_net; | |
869 | } | |
870 | ||
871 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
872 | { | |
873 | } | |
874 | ||
875 | #endif | |
876 | ||
b6f0dd5d AA |
877 | struct cifs_server_iface { |
878 | size_t speed; | |
879 | unsigned int rdma_capable : 1; | |
880 | unsigned int rss_capable : 1; | |
881 | struct sockaddr_storage sockaddr; | |
882 | }; | |
883 | ||
bcc88801 AA |
884 | struct cifs_chan { |
885 | struct TCP_Server_Info *server; | |
886 | __u8 signkey[SMB3_SIGN_KEY_SIZE]; | |
887 | }; | |
888 | ||
1da177e4 LT |
889 | /* |
890 | * Session structure. One of these for each uid session with a particular host | |
891 | */ | |
96daf2b0 | 892 | struct cifs_ses { |
14fbf50d | 893 | struct list_head smb_ses_list; |
3b795210 | 894 | struct list_head tcon_list; |
b327a717 | 895 | struct cifs_tcon *tcon_ipc; |
d7b619cf | 896 | struct mutex session_mutex; |
1da177e4 | 897 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 898 | int ses_count; /* reference counter */ |
1da177e4 | 899 | enum statusEnum status; |
750d1151 | 900 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
901 | char *serverOS; /* name of operating system underlying server */ |
902 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 903 | char *serverDomain; /* security realm of server */ |
286170aa | 904 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
905 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
906 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 907 | unsigned int capabilities; |
b438fcf1 | 908 | char ip_addr[INET6_ADDRSTRLEN + 1]; /* Max ipv6 (or v4) addr string len */ |
34c87901 SF |
909 | char *user_name; /* must not be null except during init of sess |
910 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
911 | char *domainName; |
912 | char *password; | |
5d0d2882 | 913 | struct session_key auth_key; |
d3686d54 | 914 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
915 | enum securityEnum sectype; /* what security flavor was specified? */ |
916 | bool sign; /* is signing required? */ | |
3b795210 | 917 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
39566443 | 918 | bool domainAuto:1; |
f6a6bf7c | 919 | bool binding:1; /* are we binding the session? */ |
5478f9ba | 920 | __u16 session_flags; |
373512ec SF |
921 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
922 | __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE]; | |
923 | __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE]; | |
8bd68c6e | 924 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d | 925 | |
d70e9fa5 AA |
926 | __u8 binding_preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
927 | ||
b6f0dd5d AA |
928 | /* |
929 | * Network interfaces available on the server this session is | |
930 | * connected to. | |
931 | * | |
932 | * Other channels can be opened by connecting and binding this | |
933 | * session to interfaces from this list. | |
934 | * | |
935 | * iface_lock should be taken when accessing any of these fields | |
936 | */ | |
937 | spinlock_t iface_lock; | |
938 | struct cifs_server_iface *iface_list; | |
939 | size_t iface_count; | |
940 | unsigned long iface_last_update; /* jiffies */ | |
bcc88801 AA |
941 | |
942 | #define CIFS_MAX_CHANNELS 16 | |
943 | struct cifs_chan chans[CIFS_MAX_CHANNELS]; | |
8eec7954 | 944 | struct cifs_chan *binding_chan; |
bcc88801 AA |
945 | size_t chan_count; |
946 | size_t chan_max; | |
947 | atomic_t chan_seq; /* round robin state */ | |
1da177e4 | 948 | }; |
233839b1 | 949 | |
d70e9fa5 AA |
950 | /* |
951 | * When binding a new channel, we need to access the channel which isn't fully | |
8eec7954 | 952 | * established yet. |
d70e9fa5 AA |
953 | */ |
954 | ||
955 | static inline | |
956 | struct cifs_chan *cifs_ses_binding_channel(struct cifs_ses *ses) | |
957 | { | |
958 | if (ses->binding) | |
8eec7954 | 959 | return ses->binding_chan; |
d70e9fa5 AA |
960 | else |
961 | return NULL; | |
962 | } | |
963 | ||
8eec7954 AA |
964 | /* |
965 | * Returns the server pointer of the session. When binding a new | |
966 | * channel this returns the last channel which isn't fully established | |
967 | * yet. | |
968 | * | |
969 | * This function should be use for negprot/sess.setup codepaths. For | |
970 | * the other requests see cifs_pick_channel(). | |
971 | */ | |
f6a6bf7c AA |
972 | static inline |
973 | struct TCP_Server_Info *cifs_ses_server(struct cifs_ses *ses) | |
974 | { | |
975 | if (ses->binding) | |
8eec7954 | 976 | return ses->binding_chan->server; |
f6a6bf7c AA |
977 | else |
978 | return ses->server; | |
979 | } | |
980 | ||
29e20f9c PS |
981 | static inline bool |
982 | cap_unix(struct cifs_ses *ses) | |
983 | { | |
984 | return ses->server->vals->cap_unix & ses->capabilities; | |
985 | } | |
986 | ||
a93864d9 RS |
987 | struct cached_fid { |
988 | bool is_valid:1; /* Do we have a useable root fid */ | |
b0f6df73 | 989 | bool file_all_info_is_valid:1; |
d9191319 | 990 | bool has_lease:1; |
9da6ec77 | 991 | struct kref refcount; |
a93864d9 RS |
992 | struct cifs_fid *fid; |
993 | struct mutex fid_mutex; | |
994 | struct cifs_tcon *tcon; | |
995 | struct work_struct lease_break; | |
b0f6df73 | 996 | struct smb2_file_all_info file_all_info; |
a93864d9 RS |
997 | }; |
998 | ||
1da177e4 LT |
999 | /* |
1000 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 1001 | * session |
1da177e4 | 1002 | */ |
96daf2b0 | 1003 | struct cifs_tcon { |
f1987b44 JL |
1004 | struct list_head tcon_list; |
1005 | int tc_count; | |
53e0e11e | 1006 | struct list_head rlist; /* reconnect list */ |
fae8044c SF |
1007 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
1008 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 1009 | struct list_head openFileList; |
3afca265 | 1010 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 1011 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 1012 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 1013 | char *nativeFileSystem; |
00e485b0 | 1014 | char *password; /* for share-level security */ |
faaf946a | 1015 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
1016 | __u16 Flags; /* optional support bits */ |
1017 | enum statusEnum tidStatus; | |
1da177e4 | 1018 | atomic_t num_smbs_sent; |
44c58186 PS |
1019 | union { |
1020 | struct { | |
1021 | atomic_t num_writes; | |
1022 | atomic_t num_reads; | |
1023 | atomic_t num_flushes; | |
1024 | atomic_t num_oplock_brks; | |
1025 | atomic_t num_opens; | |
1026 | atomic_t num_closes; | |
1027 | atomic_t num_deletes; | |
1028 | atomic_t num_mkdirs; | |
1029 | atomic_t num_posixopens; | |
1030 | atomic_t num_posixmkdirs; | |
1031 | atomic_t num_rmdirs; | |
1032 | atomic_t num_renames; | |
1033 | atomic_t num_t2renames; | |
1034 | atomic_t num_ffirst; | |
1035 | atomic_t num_fnext; | |
1036 | atomic_t num_fclose; | |
1037 | atomic_t num_hardlinks; | |
1038 | atomic_t num_symlinks; | |
1039 | atomic_t num_locks; | |
1040 | atomic_t num_acl_get; | |
1041 | atomic_t num_acl_set; | |
1042 | } cifs_stats; | |
d60622eb PS |
1043 | struct { |
1044 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
1045 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
1046 | } smb2_stats; | |
44c58186 | 1047 | } stats; |
1da177e4 LT |
1048 | __u64 bytes_read; |
1049 | __u64 bytes_written; | |
3afca265 | 1050 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 1051 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 1052 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 1053 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
1054 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
1055 | bool pipe:1; /* set if connection to pipe share */ | |
1056 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
1057 | bool retry:1; |
1058 | bool nocase:1; | |
3d4ef9a1 | 1059 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
82e9367c | 1060 | bool nodelete:1; |
95b1cb90 | 1061 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 1062 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 1063 | for this mount even if server would support */ |
b326614e | 1064 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 1065 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1066 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1067 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1068 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1069 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1070 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1071 | bool use_persistent:1; /* use persistent instead of durable handles */ |
3e7a02d4 | 1072 | bool no_lease:1; /* Do not request leases on files or directories */ |
769ee6a4 | 1073 | __le32 capabilities; |
faaf946a PS |
1074 | __u32 share_flags; |
1075 | __u32 maximal_access; | |
1076 | __u32 vol_serial_number; | |
1077 | __le64 vol_create_time; | |
8b217fe7 | 1078 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
ca567eb2 | 1079 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
af6a12ea SF |
1080 | __u32 ss_flags; /* sector size flags */ |
1081 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1082 | __u32 max_chunks; |
1083 | __u32 max_bytes_chunk; | |
1084 | __u32 max_bytes_copy; | |
d03382ce SJ |
1085 | #ifdef CONFIG_CIFS_FSCACHE |
1086 | u64 resource_id; /* server resource id */ | |
1087 | struct fscache_cookie *fscache; /* cookie for share */ | |
1088 | #endif | |
233839b1 | 1089 | struct list_head pending_opens; /* list of incomplete opens */ |
a93864d9 | 1090 | struct cached_fid crfid; /* Cached root fid */ |
c18c842b | 1091 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c PA |
1092 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1093 | char *dfs_path; | |
1094 | int remap:2; | |
1095 | struct list_head ulist; /* cache update list */ | |
1096 | #endif | |
0ac4e291 SC |
1097 | #ifdef CONFIG_CIFS_SWN_UPCALL |
1098 | bool use_witness:1; /* use witness protocol */ | |
1099 | #endif | |
1da177e4 LT |
1100 | }; |
1101 | ||
7ffec372 JL |
1102 | /* |
1103 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1104 | * container holds a tcon reference. It is considered safe to free one of | |
1105 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1106 | * "get" on the container. | |
1107 | */ | |
1108 | struct tcon_link { | |
b647c35f | 1109 | struct rb_node tl_rbnode; |
6d4a0832 | 1110 | kuid_t tl_uid; |
9d002df4 JL |
1111 | unsigned long tl_flags; |
1112 | #define TCON_LINK_MASTER 0 | |
1113 | #define TCON_LINK_PENDING 1 | |
1114 | #define TCON_LINK_IN_TREE 2 | |
1115 | unsigned long tl_time; | |
1116 | atomic_t tl_count; | |
96daf2b0 | 1117 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1118 | }; |
1119 | ||
9d002df4 | 1120 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1121 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1122 | |
96daf2b0 | 1123 | static inline struct cifs_tcon * |
7ffec372 JL |
1124 | tlink_tcon(struct tcon_link *tlink) |
1125 | { | |
9d002df4 | 1126 | return tlink->tl_tcon; |
7ffec372 JL |
1127 | } |
1128 | ||
8ddecf5f AA |
1129 | static inline struct tcon_link * |
1130 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1131 | { | |
1132 | return cifs_sb->master_tlink; | |
1133 | } | |
1134 | ||
9d002df4 | 1135 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1136 | |
13cfb733 JL |
1137 | static inline struct tcon_link * |
1138 | cifs_get_tlink(struct tcon_link *tlink) | |
1139 | { | |
9d002df4 JL |
1140 | if (tlink && !IS_ERR(tlink)) |
1141 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1142 | return tlink; |
1143 | } | |
1144 | ||
7ffec372 | 1145 | /* This function is always expected to succeed */ |
96daf2b0 | 1146 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1147 | |
233839b1 PS |
1148 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1149 | ||
1150 | struct cifs_pending_open { | |
1151 | struct list_head olist; | |
1152 | struct tcon_link *tlink; | |
1153 | __u8 lease_key[16]; | |
1154 | __u32 oplock; | |
1155 | }; | |
1156 | ||
1da177e4 | 1157 | /* |
7ee1af76 JA |
1158 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1159 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1160 | */ |
1161 | struct cifsLockInfo { | |
7ee1af76 | 1162 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1163 | struct list_head blist; /* pointer to locks blocked on this */ |
1164 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1165 | __u64 offset; |
1166 | __u64 length; | |
03776f45 | 1167 | __u32 pid; |
9645759c RS |
1168 | __u16 type; |
1169 | __u16 flags; | |
1da177e4 LT |
1170 | }; |
1171 | ||
1172 | /* | |
1173 | * One of these for each open instance of a file | |
1174 | */ | |
1175 | struct cifs_search_info { | |
1176 | loff_t index_of_last_entry; | |
1177 | __u16 entries_in_buffer; | |
1178 | __u16 info_level; | |
1179 | __u32 resume_key; | |
d38d8c74 SF |
1180 | char *ntwrk_buf_start; |
1181 | char *srch_entries_start; | |
0752f152 | 1182 | char *last_entry; |
eaf35b1e | 1183 | const char *presume_name; |
1da177e4 | 1184 | unsigned int resume_name_len; |
4b18f2a9 SF |
1185 | bool endOfSearch:1; |
1186 | bool emptyDir:1; | |
1187 | bool unicode:1; | |
1188 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1189 | }; |
1190 | ||
d0959b08 | 1191 | #define ACL_NO_MODE ((umode_t)(-1)) |
226730b4 PS |
1192 | struct cifs_open_parms { |
1193 | struct cifs_tcon *tcon; | |
1194 | struct cifs_sb_info *cifs_sb; | |
1195 | int disposition; | |
1196 | int desired_access; | |
1197 | int create_options; | |
1198 | const char *path; | |
1199 | struct cifs_fid *fid; | |
ce558b0e | 1200 | umode_t mode; |
9cbc0b73 | 1201 | bool reconnect:1; |
226730b4 PS |
1202 | }; |
1203 | ||
4b4de76e PS |
1204 | struct cifs_fid { |
1205 | __u16 netfid; | |
f0df737e PS |
1206 | __u64 persistent_fid; /* persist file id for smb2 */ |
1207 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1208 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1209 | __u8 create_guid[16]; |
86f740f2 | 1210 | __u32 access; |
233839b1 | 1211 | struct cifs_pending_open *pending_open; |
42873b0a | 1212 | unsigned int epoch; |
dfe33f9a SF |
1213 | #ifdef CONFIG_CIFS_DEBUG2 |
1214 | __u64 mid; | |
1215 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1216 | bool purge_cache; |
4b4de76e PS |
1217 | }; |
1218 | ||
f45d3416 PS |
1219 | struct cifs_fid_locks { |
1220 | struct list_head llist; | |
1221 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1222 | struct list_head locks; /* locks held by fid above */ | |
1223 | }; | |
1224 | ||
1da177e4 | 1225 | struct cifsFileInfo { |
3afca265 | 1226 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1227 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1228 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1229 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1230 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1231 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1232 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1233 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1234 | struct list_head rlist; /* reconnect list */ |
1da177e4 LT |
1235 | /* BB add lock scope info here if needed */ ; |
1236 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1237 | struct dentry *dentry; |
13cfb733 | 1238 | struct tcon_link *tlink; |
3afca265 | 1239 | unsigned int f_flags; |
4b18f2a9 | 1240 | bool invalidHandle:1; /* file closed via session abend */ |
4e8aea30 | 1241 | bool swapfile:1; |
3bc303c2 | 1242 | bool oplock_break_cancelled:1; |
9bd45408 PS |
1243 | unsigned int oplock_epoch; /* epoch from the lease break */ |
1244 | __u32 oplock_level; /* oplock/lease level from the lease break */ | |
3afca265 SF |
1245 | int count; |
1246 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1247 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1248 | struct cifs_search_info srch_inf; |
9b646972 | 1249 | struct work_struct oplock_break; /* work for oplock breaks */ |
32546a95 | 1250 | struct work_struct put; /* work for the final part of _put */ |
1da177e4 LT |
1251 | }; |
1252 | ||
fa2989f4 PS |
1253 | struct cifs_io_parms { |
1254 | __u16 netfid; | |
09a4707e PS |
1255 | __u64 persistent_fid; /* persist file id for smb2 */ |
1256 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1257 | __u32 pid; |
1258 | __u64 offset; | |
1259 | unsigned int length; | |
96daf2b0 | 1260 | struct cifs_tcon *tcon; |
352d96f3 | 1261 | struct TCP_Server_Info *server; |
fa2989f4 PS |
1262 | }; |
1263 | ||
ccf7f408 PS |
1264 | struct cifs_aio_ctx { |
1265 | struct kref refcount; | |
1266 | struct list_head list; | |
1267 | struct mutex aio_mutex; | |
1268 | struct completion done; | |
1269 | struct iov_iter iter; | |
1270 | struct kiocb *iocb; | |
1271 | struct cifsFileInfo *cfile; | |
1272 | struct bio_vec *bv; | |
c610c4b6 | 1273 | loff_t pos; |
ccf7f408 PS |
1274 | unsigned int npages; |
1275 | ssize_t rc; | |
1276 | unsigned int len; | |
1277 | unsigned int total_len; | |
1278 | bool should_dirty; | |
6e6e2b86 LL |
1279 | /* |
1280 | * Indicates if this aio_ctx is for direct_io, | |
1281 | * If yes, iter is a copy of the user passed iov_iter | |
1282 | */ | |
1283 | bool direct_io; | |
ccf7f408 PS |
1284 | }; |
1285 | ||
09a4707e PS |
1286 | struct cifs_readdata; |
1287 | ||
1288 | /* asynchronous read support */ | |
1289 | struct cifs_readdata { | |
1290 | struct kref refcount; | |
1291 | struct list_head list; | |
1292 | struct completion done; | |
1293 | struct cifsFileInfo *cfile; | |
1294 | struct address_space *mapping; | |
6685c5e2 | 1295 | struct cifs_aio_ctx *ctx; |
09a4707e PS |
1296 | __u64 offset; |
1297 | unsigned int bytes; | |
34a54d61 | 1298 | unsigned int got_bytes; |
09a4707e PS |
1299 | pid_t pid; |
1300 | int result; | |
09a4707e | 1301 | struct work_struct work; |
8321fec4 JL |
1302 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1303 | struct cifs_readdata *rdata, | |
1304 | unsigned int len); | |
d70b9104 PS |
1305 | int (*copy_into_pages)(struct TCP_Server_Info *server, |
1306 | struct cifs_readdata *rdata, | |
1307 | struct iov_iter *iter); | |
738f9de5 | 1308 | struct kvec iov[2]; |
352d96f3 | 1309 | struct TCP_Server_Info *server; |
74dcf418 LL |
1310 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1311 | struct smbd_mr *mr; | |
1312 | #endif | |
8321fec4 | 1313 | unsigned int pagesz; |
57a929a6 | 1314 | unsigned int page_offset; |
8321fec4 | 1315 | unsigned int tailsz; |
335b7b62 | 1316 | struct cifs_credits credits; |
c5fab6f4 | 1317 | unsigned int nr_pages; |
f9f5aca1 | 1318 | struct page **pages; |
09a4707e PS |
1319 | }; |
1320 | ||
33319141 PS |
1321 | struct cifs_writedata; |
1322 | ||
1323 | /* asynchronous write support */ | |
1324 | struct cifs_writedata { | |
1325 | struct kref refcount; | |
1326 | struct list_head list; | |
1327 | struct completion done; | |
1328 | enum writeback_sync_modes sync_mode; | |
1329 | struct work_struct work; | |
1330 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1331 | struct cifs_aio_ctx *ctx; |
33319141 PS |
1332 | __u64 offset; |
1333 | pid_t pid; | |
1334 | unsigned int bytes; | |
1335 | int result; | |
352d96f3 | 1336 | struct TCP_Server_Info *server; |
db223a59 LL |
1337 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1338 | struct smbd_mr *mr; | |
1339 | #endif | |
eddb079d | 1340 | unsigned int pagesz; |
57a929a6 | 1341 | unsigned int page_offset; |
eddb079d | 1342 | unsigned int tailsz; |
335b7b62 | 1343 | struct cifs_credits credits; |
33319141 | 1344 | unsigned int nr_pages; |
8e7360f6 | 1345 | struct page **pages; |
33319141 PS |
1346 | }; |
1347 | ||
5f6dbc9e JL |
1348 | /* |
1349 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1350 | * cfile->file_info_lock held. |
5f6dbc9e | 1351 | */ |
764a1b1a JL |
1352 | static inline void |
1353 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1354 | { |
5f6dbc9e | 1355 | ++cifs_file->count; |
6ab409b5 DK |
1356 | } |
1357 | ||
764a1b1a | 1358 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
32546a95 RS |
1359 | void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr, |
1360 | bool offload); | |
b33879aa | 1361 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1362 | |
18cceb6a PS |
1363 | #define CIFS_CACHE_READ_FLG 1 |
1364 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1365 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1366 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1367 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1368 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a | 1369 | |
83bbfa70 | 1370 | #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 | 1371 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
41e033fe | 1372 | #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 | 1373 | |
1da177e4 LT |
1374 | /* |
1375 | * One of these for each file inode | |
1376 | */ | |
1377 | ||
1378 | struct cifsInodeInfo { | |
d59dad2b | 1379 | bool can_cache_brlcks; |
f45d3416 | 1380 | struct list_head llist; /* locks helb by this inode */ |
d46b0da7 DW |
1381 | /* |
1382 | * NOTE: Some code paths call down_read(lock_sem) twice, so | |
a03f507d | 1383 | * we must always use cifs_down_write() instead of down_write() |
d46b0da7 DW |
1384 | * for this semaphore to avoid deadlocks. |
1385 | */ | |
1b4b55a1 | 1386 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1387 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1388 | struct list_head openFileList; |
487317c9 | 1389 | spinlock_t open_file_lock; /* protects openFileList */ |
1da177e4 | 1390 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1391 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1392 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1393 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1394 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
9bd45408 | 1395 | #define CIFS_INODE_FLAG_UNUSED (2) /* Unused flag */ |
aff8d5ca JL |
1396 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1397 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1398 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
aff8d5ca | 1399 | unsigned long flags; |
c11f1df5 SP |
1400 | spinlock_t writers_lock; |
1401 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1402 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1403 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1404 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1405 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1406 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
9451a9a5 SJ |
1407 | #ifdef CONFIG_CIFS_FSCACHE |
1408 | struct fscache_cookie *fscache; | |
1409 | #endif | |
1da177e4 LT |
1410 | struct inode vfs_inode; |
1411 | }; | |
1412 | ||
1413 | static inline struct cifsInodeInfo * | |
1414 | CIFS_I(struct inode *inode) | |
1415 | { | |
1416 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1417 | } | |
1418 | ||
1419 | static inline struct cifs_sb_info * | |
1420 | CIFS_SB(struct super_block *sb) | |
1421 | { | |
1422 | return sb->s_fs_info; | |
1423 | } | |
1424 | ||
7119e220 AV |
1425 | static inline struct cifs_sb_info * |
1426 | CIFS_FILE_SB(struct file *file) | |
1427 | { | |
1428 | return CIFS_SB(file_inode(file)->i_sb); | |
1429 | } | |
1430 | ||
ab2f218f | 1431 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1432 | { |
1433 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1434 | return '/'; | |
1435 | else | |
1436 | return '\\'; | |
1437 | } | |
1da177e4 | 1438 | |
f87d39d9 SF |
1439 | static inline void |
1440 | convert_delimiter(char *path, char delim) | |
1441 | { | |
1cc9bd68 | 1442 | char old_delim, *pos; |
f87d39d9 SF |
1443 | |
1444 | if (delim == '/') | |
1445 | old_delim = '\\'; | |
1446 | else | |
1447 | old_delim = '/'; | |
1448 | ||
1cc9bd68 SF |
1449 | pos = path; |
1450 | while ((pos = strchr(pos, old_delim))) | |
1451 | *pos = delim; | |
f87d39d9 SF |
1452 | } |
1453 | ||
a4544347 SF |
1454 | #define cifs_stats_inc atomic_inc |
1455 | ||
96daf2b0 | 1456 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1457 | unsigned int bytes) |
1458 | { | |
1459 | if (bytes) { | |
1460 | spin_lock(&tcon->stat_lock); | |
1461 | tcon->bytes_written += bytes; | |
1462 | spin_unlock(&tcon->stat_lock); | |
1463 | } | |
1464 | } | |
1465 | ||
96daf2b0 | 1466 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1467 | unsigned int bytes) |
1468 | { | |
1469 | spin_lock(&tcon->stat_lock); | |
1470 | tcon->bytes_read += bytes; | |
1471 | spin_unlock(&tcon->stat_lock); | |
1472 | } | |
a4544347 | 1473 | |
2b84a36c JL |
1474 | |
1475 | /* | |
44d22d84 JL |
1476 | * This is the prototype for the mid receive function. This function is for |
1477 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1478 | * just after the MID in struct smb_hdr). Note: | |
1479 | * | |
1480 | * - This will be called by cifsd, with no locks held. | |
1481 | * - The mid will still be on the pending_mid_q. | |
1482 | * - mid->resp_buf will point to the current buffer. | |
1483 | * | |
1484 | * Returns zero on a successful receive, or an error. The receive state in | |
1485 | * the TCP_Server_Info will also be updated. | |
1486 | */ | |
1487 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1488 | struct mid_q_entry *mid); | |
1489 | ||
1490 | /* | |
1491 | * This is the prototype for the mid callback function. This is called once the | |
1492 | * mid has been received off of the socket. When creating one, take special | |
1493 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1494 | * |
3c1105df JL |
1495 | * - it will be called by cifsd, with no locks held |
1496 | * - the mid will be removed from any lists | |
2b84a36c JL |
1497 | */ |
1498 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1499 | ||
9b7c18a2 PS |
1500 | /* |
1501 | * This is the protopyte for mid handle function. This is called once the mid | |
1502 | * has been recognized after decryption of the message. | |
1503 | */ | |
1504 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1505 | struct mid_q_entry *mid); | |
1506 | ||
1da177e4 LT |
1507 | /* one of these for every pending CIFS request to the server */ |
1508 | struct mid_q_entry { | |
1509 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1510 | struct kref refcount; |
2dc7e1c0 | 1511 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 | 1512 | __u64 mid; /* multiplex id */ |
c781af7e | 1513 | __u16 credits; /* number of credits consumed by this mid */ |
86a7964b | 1514 | __u16 credits_received; /* number of credits from the response */ |
7c9421e1 | 1515 | __u32 pid; /* process id */ |
1da177e4 | 1516 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1517 | unsigned long when_alloc; /* when mid was created */ |
1518 | #ifdef CONFIG_CIFS_STATS2 | |
1519 | unsigned long when_sent; /* time when smb send finished */ | |
1520 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1521 | #endif | |
44d22d84 | 1522 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1523 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1524 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1525 | void *callback_data; /* general purpose pointer for callback */ |
f1f27ad7 | 1526 | struct task_struct *creator; |
d4e4854f | 1527 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1528 | unsigned int resp_buf_size; |
7c9421e1 | 1529 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1530 | unsigned int mid_flags; |
7c9421e1 | 1531 | __le16 command; /* smb command code */ |
8a26f0f7 | 1532 | unsigned int optype; /* operation type */ |
7c9421e1 | 1533 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1534 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1535 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1536 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1537 | }; |
1538 | ||
38bd4906 SP |
1539 | struct close_cancelled_open { |
1540 | struct cifs_fid fid; | |
1541 | struct cifs_tcon *tcon; | |
1542 | struct work_struct work; | |
87bc2376 RS |
1543 | __u64 mid; |
1544 | __u16 cmd; | |
38bd4906 SP |
1545 | }; |
1546 | ||
789e6661 SF |
1547 | /* Make code in transport.c a little cleaner by moving |
1548 | update of optional stats into function below */ | |
789e6661 SF |
1549 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
1550 | { | |
1551 | atomic_inc(&server->in_send); | |
1552 | } | |
1553 | ||
1554 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1555 | { | |
1556 | atomic_dec(&server->in_send); | |
1557 | } | |
1558 | ||
1559 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1560 | { | |
1561 | atomic_inc(&server->num_waiters); | |
1562 | } | |
1563 | ||
1564 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1565 | { | |
1566 | atomic_dec(&server->num_waiters); | |
1567 | } | |
1568 | ||
1ae9a5a5 | 1569 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 SF |
1570 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1571 | { | |
1572 | mid->when_sent = jiffies; | |
1573 | } | |
1574 | #else | |
789e6661 SF |
1575 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1576 | { | |
1577 | } | |
1578 | #endif | |
1da177e4 | 1579 | |
ff5dbd9e SF |
1580 | /* for pending dnotify requests */ |
1581 | struct dir_notify_req { | |
13cd4b7f SF |
1582 | struct list_head lhead; |
1583 | __le16 Pid; | |
1584 | __le16 PidHigh; | |
1585 | __u16 Mid; | |
1586 | __u16 Tid; | |
1587 | __u16 Uid; | |
1588 | __u16 netfid; | |
1589 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1590 | int multishot; | |
1591 | struct file *pfile; | |
ff5dbd9e SF |
1592 | }; |
1593 | ||
366781c1 SF |
1594 | struct dfs_info3_param { |
1595 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1596 | int path_consumed; |
366781c1 SF |
1597 | int server_type; |
1598 | int ref_flag; | |
1599 | char *path_name; | |
1600 | char *node_name; | |
e7b602f4 | 1601 | int ttl; |
366781c1 SF |
1602 | }; |
1603 | ||
cc0bad75 JL |
1604 | /* |
1605 | * common struct for holding inode info when searching for or updating an | |
1606 | * inode with new info | |
1607 | */ | |
1608 | ||
1609 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1610 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1611 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1612 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1613 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
7ea884c7 | 1614 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 |
cc0bad75 JL |
1615 | |
1616 | struct cifs_fattr { | |
1617 | u32 cf_flags; | |
1618 | u32 cf_cifsattrs; | |
1619 | u64 cf_uniqueid; | |
1620 | u64 cf_eof; | |
1621 | u64 cf_bytes; | |
20054bd6 | 1622 | u64 cf_createtime; |
4a2c8cf5 EB |
1623 | kuid_t cf_uid; |
1624 | kgid_t cf_gid; | |
cc0bad75 JL |
1625 | umode_t cf_mode; |
1626 | dev_t cf_rdev; | |
1627 | unsigned int cf_nlink; | |
1628 | unsigned int cf_dtype; | |
95390201 AB |
1629 | struct timespec64 cf_atime; |
1630 | struct timespec64 cf_mtime; | |
1631 | struct timespec64 cf_ctime; | |
046aca3c | 1632 | u32 cf_cifstag; |
cc0bad75 JL |
1633 | }; |
1634 | ||
366781c1 SF |
1635 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1636 | { | |
1637 | if (param) { | |
1638 | kfree(param->path_name); | |
1639 | kfree(param->node_name); | |
366781c1 SF |
1640 | } |
1641 | } | |
1642 | ||
1643 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1644 | int number_of_items) | |
1645 | { | |
1646 | int i; | |
1647 | if ((number_of_items == 0) || (param == NULL)) | |
1648 | return; | |
1649 | for (i = 0; i < number_of_items; i++) { | |
1650 | kfree(param[i].path_name); | |
1651 | kfree(param[i].node_name); | |
1652 | } | |
1653 | kfree(param); | |
1654 | } | |
1655 | ||
9a66396f PS |
1656 | static inline bool is_interrupt_error(int error) |
1657 | { | |
1658 | switch (error) { | |
1659 | case -EINTR: | |
1660 | case -ERESTARTSYS: | |
1661 | case -ERESTARTNOHAND: | |
1662 | case -ERESTARTNOINTR: | |
1663 | return true; | |
1664 | } | |
1665 | return false; | |
1666 | } | |
1667 | ||
1668 | static inline bool is_retryable_error(int error) | |
1669 | { | |
1670 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1671 | return true; | |
1672 | return false; | |
1673 | } | |
1674 | ||
86f740f2 AA |
1675 | |
1676 | /* cifs_get_writable_file() flags */ | |
1677 | #define FIND_WR_ANY 0 | |
1678 | #define FIND_WR_FSUID_ONLY 1 | |
1679 | #define FIND_WR_WITH_DELETE 2 | |
1680 | ||
1da177e4 LT |
1681 | #define MID_FREE 0 |
1682 | #define MID_REQUEST_ALLOCATED 1 | |
1683 | #define MID_REQUEST_SUBMITTED 2 | |
1684 | #define MID_RESPONSE_RECEIVED 4 | |
1685 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1686 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1687 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1688 | |
38bd4906 SP |
1689 | /* Flags */ |
1690 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1691 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1692 | |
ec637e3f SF |
1693 | /* Types of response buffer returned from SendReceive2 */ |
1694 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1695 | #define CIFS_SMALL_BUFFER 1 | |
1696 | #define CIFS_LARGE_BUFFER 2 | |
1697 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1698 | |
133672ef | 1699 | /* Type of Request to SendReceive2 */ |
7749981e | 1700 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
392e1c5d | 1701 | #define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */ |
7749981e | 1702 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
133672ef SF |
1703 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1704 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
392e1c5d | 1705 | #define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */ |
133672ef | 1706 | |
a891f0f8 | 1707 | /* Type of request operation */ |
04ad69c3 PA |
1708 | #define CIFS_ECHO_OP 0x080 /* echo request */ |
1709 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
1710 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ | |
1711 | #define CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */ | |
0f56db83 | 1712 | /* Lower bitmask values are reserved by others below. */ |
04ad69c3 PA |
1713 | #define CIFS_SESS_OP 0x2000 /* session setup request */ |
1714 | #define CIFS_OP_MASK 0x2780 /* mask request type */ | |
7fb8986e | 1715 | |
04ad69c3 PA |
1716 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
1717 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ | |
1718 | #define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */ | |
a891f0f8 | 1719 | |
3979877e SF |
1720 | /* Security Flags: indicate type of session setup needed */ |
1721 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1722 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1723 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1724 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1725 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1726 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1727 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1728 | #else |
1729 | #define CIFSSEC_MAY_LANMAN 0 | |
1730 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1731 | #endif /* weak passwords */ |
1732 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1733 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1734 | |
1735 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1736 | /* note that only one of the following can be set so the | |
1737 | result of setting MUST flags more than once will be to | |
1738 | require use of the stronger protocol */ | |
1739 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1740 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1741 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1742 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1743 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1744 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1745 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1746 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1747 | #else |
20d1752f | 1748 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1749 | #endif /* UPCALL */ |
0d3a01fa | 1750 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1751 | #define CIFSSEC_MUST_LANMAN 0 |
1752 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1753 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1754 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1755 | #else |
ac683924 | 1756 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1757 | #endif /* UPCALL */ |
3979877e SF |
1758 | #endif /* WEAK_PW_HASH */ |
1759 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1760 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1761 | |
896a8fc2 | 1762 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
ef571cad | 1763 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
ac683924 | 1764 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1765 | /* |
1766 | ***************************************************************** | |
1767 | * All constants go here | |
1768 | ***************************************************************** | |
1769 | */ | |
1770 | ||
1771 | #define UID_HASH (16) | |
1772 | ||
1773 | /* | |
1774 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1775 | * following to be declared. | |
1776 | */ | |
1777 | ||
1778 | /**************************************************************************** | |
1779 | * Locking notes. All updates to global variables and lists should be | |
1780 | * protected by spinlocks or semaphores. | |
1781 | * | |
1782 | * Spinlocks | |
1783 | * --------- | |
1784 | * GlobalMid_Lock protects: | |
1785 | * list operations on pending_mid_q and oplockQ | |
1786 | * updates to XID counters, multiplex id and SMB sequence numbers | |
65525802 | 1787 | * list operations on global DnotifyReqList |
3afca265 SF |
1788 | * tcp_ses_lock protects: |
1789 | * list operations on tcp and SMB session lists | |
1790 | * tcon->open_file_lock protects the list of open files hanging off the tcon | |
487317c9 | 1791 | * inode->open_file_lock protects the openFileList hanging off the inode |
3afca265 | 1792 | * cfile->file_info_lock protects counters and fields in cifs file struct |
1da177e4 LT |
1793 | * f_owner.lock protects certain per file struct operations |
1794 | * mapping->page_lock protects certain per page operations | |
1795 | * | |
487317c9 RS |
1796 | * Note that the cifs_tcon.open_file_lock should be taken before |
1797 | * not after the cifsInodeInfo.open_file_lock | |
1798 | * | |
1da177e4 LT |
1799 | * Semaphores |
1800 | * ---------- | |
1801 | * sesSem operations on smb session | |
1802 | * tconSem operations on tree connection | |
d38d8c74 | 1803 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1804 | * |
1805 | ****************************************************************************/ | |
1806 | ||
1807 | #ifdef DECLARE_GLOBALS_HERE | |
1808 | #define GLOBAL_EXTERN | |
1809 | #else | |
1810 | #define GLOBAL_EXTERN extern | |
1811 | #endif | |
1812 | ||
e7ddee90 JL |
1813 | /* |
1814 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1815 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1816 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1817 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1818 | * by iterating over cifs_tcp_ses_list |
1819 | */ | |
1820 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1821 | ||
f1987b44 JL |
1822 | /* |
1823 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1824 | * tcp session, and the list of tcon's per smb session. It also protects | |
d92c7ce4 SF |
1825 | * the reference counters for the server, smb session, and tcon. It also |
1826 | * protects some fields in the TCP_Server_Info struct such as dstaddr. Finally, | |
f1987b44 | 1827 | * changes to the tcon->tidStatus should be done while holding this lock. |
3afca265 SF |
1828 | * generally the locks should be taken in order tcp_ses_lock before |
1829 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1830 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1831 | */ |
3f9bcca7 | 1832 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1833 | |
0eff0e26 | 1834 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1835 | /* Outstanding dir notify requests */ |
1836 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1837 | /* DirNotify response queue */ | |
1838 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1839 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1840 | |
1da177e4 LT |
1841 | /* |
1842 | * Global transaction id (XID) information | |
1843 | */ | |
1844 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1845 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1846 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1847 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1848 | /* on midQ entries */ | |
1da177e4 LT |
1849 | /* |
1850 | * Global counters, updated atomically | |
1851 | */ | |
1852 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1853 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
6d82c27a | 1854 | GLOBAL_EXTERN atomic_t tcpSesNextId; |
1da177e4 LT |
1855 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; |
1856 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1857 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1858 | ||
aaa9bbe0 | 1859 | /* Various Debug counters */ |
4498eed5 SF |
1860 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1861 | #ifdef CONFIG_CIFS_STATS2 | |
1862 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1863 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
00778e22 | 1864 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 SF |
1865 | #endif |
1866 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1867 | GLOBAL_EXTERN atomic_t midCount; |
1868 | ||
1869 | /* Misc globals */ | |
f92a720e SF |
1870 | extern bool enable_oplocks; /* enable or disable oplocks */ |
1871 | extern bool lookupCacheEnabled; | |
1872 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 1873 | with more secure ntlmssp2 challenge/resp */ |
f92a720e | 1874 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
29e27923 | 1875 | extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */ |
fbfd0b46 | 1876 | extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */ |
f92a720e SF |
1877 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
1878 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1879 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1880 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
1881 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1882 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ | |
1da177e4 | 1883 | |
4d79dba0 SP |
1884 | GLOBAL_EXTERN struct rb_root uidtree; |
1885 | GLOBAL_EXTERN struct rb_root gidtree; | |
1886 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1887 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1888 | GLOBAL_EXTERN struct rb_root siduidtree; |
1889 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1890 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1891 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
4d79dba0 | 1892 | |
9b646972 | 1893 | void cifs_oplock_break(struct work_struct *work); |
b98749ca | 1894 | void cifs_queue_oplock_break(struct cifsFileInfo *cfile); |
3b7433b8 | 1895 | |
3bc303c2 | 1896 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1897 | extern struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 1898 | extern struct workqueue_struct *decrypt_wq; |
32546a95 | 1899 | extern struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 1900 | extern struct workqueue_struct *cifsoplockd_wq; |
3d22462a | 1901 | extern __u32 cifs_lock_secret; |
abd2e44d | 1902 | |
2dc7e1c0 PS |
1903 | extern mempool_t *cifs_mid_poolp; |
1904 | ||
23db65f5 JL |
1905 | /* Operations for different SMB versions */ |
1906 | #define SMB1_VERSION_STRING "1.0" | |
1907 | extern struct smb_version_operations smb1_operations; | |
1908 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1909 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1910 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1911 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1912 | #define SMB21_VERSION_STRING "2.1" |
1913 | extern struct smb_version_operations smb21_operations; | |
1914 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
1915 | #define SMBDEFAULT_VERSION_STRING "default" |
1916 | extern struct smb_version_values smbdefault_values; | |
1917 | #define SMB3ANY_VERSION_STRING "3" | |
1918 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 1919 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1920 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1921 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 1922 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 1923 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
1924 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
1925 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1926 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1927 | #define ALT_SMB311_VERSION_STRING "3.11" |
1928 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1929 | extern struct smb_version_values smb311_values; |
b8f7442b | 1930 | |
0b0430c6 K |
1931 | static inline char *get_security_type_str(enum securityEnum sectype) |
1932 | { | |
1933 | switch (sectype) { | |
1934 | case RawNTLMSSP: | |
1935 | return "RawNTLMSSP"; | |
1936 | case Kerberos: | |
1937 | return "Kerberos"; | |
1938 | case NTLMv2: | |
1939 | return "NTLMv2"; | |
1940 | case NTLM: | |
1941 | return "NTLM"; | |
1942 | case LANMAN: | |
1943 | return "LANMAN"; | |
1944 | default: | |
1945 | return "Unknown"; | |
1946 | } | |
1947 | } | |
1948 | ||
b8f7442b AA |
1949 | static inline bool is_smb1_server(struct TCP_Server_Info *server) |
1950 | { | |
1951 | return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0; | |
1952 | } | |
1953 | ||
e183785f PA |
1954 | static inline bool is_tcon_dfs(struct cifs_tcon *tcon) |
1955 | { | |
1956 | /* | |
1957 | * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS | |
1958 | * Subsystem Notifies That a Share Is a DFS Share. | |
1959 | * | |
1960 | * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server | |
1961 | * Application Updates a Share. | |
1962 | */ | |
1963 | if (!tcon || !tcon->ses || !tcon->ses->server) | |
1964 | return false; | |
1965 | return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS : | |
1966 | tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT); | |
1967 | } | |
1968 | ||
abd2e44d | 1969 | #endif /* _CIFS_GLOB_H */ |