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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> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
2dc7e1c0 | 25 | #include <linux/mempool.h> |
9b646972 | 26 | #include <linux/workqueue.h> |
1da177e4 | 27 | #include "cifs_fs_sb.h" |
442aa310 | 28 | #include "cifsacl.h" |
d2b91521 SP |
29 | #include <crypto/internal/hash.h> |
30 | #include <linux/scatterlist.h> | |
8c3a2b4c | 31 | #include <uapi/linux/cifs/cifs_mount.h> |
d60622eb | 32 | #include "smb2pdu.h" |
d2b91521 | 33 | |
76ec5e33 PS |
34 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ |
35 | ||
8d8b26e5 | 36 | #define SMB_PATH_MAX 260 |
e2292430 AA |
37 | #define CIFS_PORT 445 |
38 | #define RFC1001_PORT 139 | |
39 | ||
1da177e4 LT |
40 | /* |
41 | * The sizes of various internal tables and strings | |
42 | */ | |
43 | #define MAX_UID_INFO 16 | |
44 | #define MAX_SES_INFO 2 | |
45 | #define MAX_TCON_INFO 4 | |
46 | ||
cdf1246f | 47 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
48 | |
49 | #define CIFS_MIN_RCV_POOL 4 | |
50 | ||
2c0c2a08 | 51 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
52 | /* |
53 | * default attribute cache timeout (jiffies) | |
54 | */ | |
55 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
56 | ||
57 | /* | |
58 | * max attribute cache timeout (jiffies) - 2^30 | |
59 | */ | |
60 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
61 | ||
ca567eb2 SF |
62 | /* |
63 | * Max persistent and resilient handle timeout (milliseconds). | |
64 | * Windows durable max was 960000 (16 minutes) | |
65 | */ | |
66 | #define SMB3_MAX_HANDLE_TIMEOUT 960000 | |
67 | ||
1da177e4 LT |
68 | /* |
69 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 70 | * on one socket concurrently. |
1da177e4 | 71 | */ |
10b9b98e | 72 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 73 | |
8ecaf67a JL |
74 | #define RFC1001_NAME_LEN 15 |
75 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
76 | ||
b327a717 AA |
77 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
78 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
79 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
80 | ||
adfeb3e0 SF |
81 | /* echo interval in seconds */ |
82 | #define SMB_ECHO_INTERVAL_MIN 1 | |
83 | #define SMB_ECHO_INTERVAL_MAX 600 | |
84 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 85 | |
b24df3e3 RS |
86 | /* maximum number of PDUs in one compound */ |
87 | #define MAX_COMPOUND 5 | |
88 | ||
141891f4 SF |
89 | /* |
90 | * Default number of credits to keep available for SMB3. | |
91 | * This value is chosen somewhat arbitrarily. The Windows client | |
92 | * defaults to 128 credits, the Windows server allows clients up to | |
93 | * 512 credits (or 8K for later versions), and the NetApp server | |
94 | * does not limit clients at all. Choose a high enough default value | |
95 | * such that the client shouldn't limit performance, but allow mount | |
96 | * to override (until you approach 64K, where we limit credits to 65000 | |
97 | * to reduce possibility of seeing more server credit overflow bugs. | |
98 | */ | |
99 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
100 | ||
1da177e4 LT |
101 | #include "cifspdu.h" |
102 | ||
1da177e4 LT |
103 | #ifndef XATTR_DOS_ATTRIB |
104 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
105 | #endif | |
106 | ||
1da177e4 LT |
107 | /* |
108 | * CIFS vfs client Status information (based on what we know.) | |
109 | */ | |
110 | ||
6c0f6218 | 111 | /* associated with each tcp and smb session */ |
1da177e4 LT |
112 | enum statusEnum { |
113 | CifsNew = 0, | |
114 | CifsGood, | |
115 | CifsExiting, | |
fd88ce93 SF |
116 | CifsNeedReconnect, |
117 | CifsNeedNegotiate | |
1da177e4 LT |
118 | }; |
119 | ||
120 | enum securityEnum { | |
515d82ff JL |
121 | Unspecified = 0, /* not specified */ |
122 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 123 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 124 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 125 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 126 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
127 | }; |
128 | ||
5f98ca9a | 129 | struct session_key { |
b609f06a | 130 | unsigned int len; |
21e73393 | 131 | char *response; |
b609f06a SF |
132 | }; |
133 | ||
d2b91521 SP |
134 | /* crypto security descriptor definition */ |
135 | struct sdesc { | |
136 | struct shash_desc shash; | |
137 | char ctx[]; | |
138 | }; | |
139 | ||
f7c5445a | 140 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
141 | struct cifs_secmech { |
142 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
143 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 144 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 145 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
5fcd7f3f | 146 | struct crypto_shash *sha512; /* sha512 hash function */ |
d2b91521 SP |
147 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
148 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 149 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 150 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
5fcd7f3f | 151 | struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ |
026e93dc PS |
152 | struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ |
153 | struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ | |
d2b91521 SP |
154 | }; |
155 | ||
d3686d54 | 156 | /* per smb session structure/fields */ |
d2b91521 | 157 | struct ntlmssp_auth { |
5c234aa5 | 158 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
159 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
160 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
161 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 162 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
163 | }; |
164 | ||
442aa310 SF |
165 | struct cifs_cred { |
166 | int uid; | |
167 | int gid; | |
168 | int mode; | |
169 | int cecount; | |
170 | struct cifs_sid osid; | |
171 | struct cifs_sid gsid; | |
172 | struct cifs_ntace *ntaces; | |
173 | struct cifs_ace *aces; | |
174 | }; | |
175 | ||
1da177e4 LT |
176 | /* |
177 | ***************************************************************** | |
178 | * Except the CIFS PDUs themselves all the | |
179 | * globally interesting structs should go here | |
180 | ***************************************************************** | |
181 | */ | |
182 | ||
bf5ea0e2 JL |
183 | /* |
184 | * A smb_rqst represents a complete request to be issued to a server. It's | |
185 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
186 | * to start at the beginning of the first page. | |
187 | */ | |
188 | struct smb_rqst { | |
189 | struct kvec *rq_iov; /* array of kvecs */ | |
190 | unsigned int rq_nvec; /* number of kvecs in array */ | |
191 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
57a929a6 | 192 | unsigned int rq_offset; /* the offset to the 1st page */ |
bf5ea0e2 JL |
193 | unsigned int rq_npages; /* number pages in array */ |
194 | unsigned int rq_pagesz; /* page size to use */ | |
195 | unsigned int rq_tailsz; /* length of last page */ | |
196 | }; | |
197 | ||
23db65f5 JL |
198 | enum smb_version { |
199 | Smb_1 = 1, | |
dd446b16 | 200 | Smb_20, |
1080ef75 | 201 | Smb_21, |
e4aa25e7 | 202 | Smb_30, |
20b6d8b4 | 203 | Smb_302, |
5f7fbf73 | 204 | Smb_311, |
9764c02f SF |
205 | Smb_3any, |
206 | Smb_default, | |
5f7fbf73 | 207 | Smb_version_err |
23db65f5 JL |
208 | }; |
209 | ||
121b046a JL |
210 | struct mid_q_entry; |
211 | struct TCP_Server_Info; | |
55157dfb | 212 | struct cifsFileInfo; |
082d0642 | 213 | struct cifs_ses; |
2e6e02ab | 214 | struct cifs_tcon; |
b669f33c | 215 | struct dfs_info3_param; |
1208ef1f | 216 | struct cifs_fattr; |
9224dfc2 | 217 | struct smb_vol; |
fb1214e4 | 218 | struct cifs_fid; |
fc9c5966 | 219 | struct cifs_readdata; |
c9de5c80 | 220 | struct cifs_writedata; |
f9c6e234 | 221 | struct cifs_io_parms; |
92fc65a7 | 222 | struct cifs_search_info; |
95a3f2f3 | 223 | struct cifsInodeInfo; |
226730b4 | 224 | struct cifs_open_parms; |
335b7b62 | 225 | struct cifs_credits; |
121b046a | 226 | |
23db65f5 | 227 | struct smb_version_operations { |
fb2036d8 | 228 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 229 | struct mid_q_entry *); |
55157dfb | 230 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 231 | /* setup request: allocate mid, sign message */ |
fec344e3 | 232 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
f780bd3f AA |
233 | struct TCP_Server_Info *, |
234 | struct smb_rqst *); | |
45740847 | 235 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
236 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
237 | struct smb_rqst *); | |
082d0642 PS |
238 | /* check response: verify signature, map error */ |
239 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
240 | bool); | |
335b7b62 PS |
241 | void (*add_credits)(struct TCP_Server_Info *server, |
242 | const struct cifs_credits *credits, | |
243 | const int optype); | |
45275789 | 244 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
245 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
246 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 247 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
c781af7e PS |
248 | void (*revert_current_mid)(struct TCP_Server_Info *server, |
249 | const unsigned int val); | |
eb378711 PS |
250 | /* data offset from read response message */ |
251 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
252 | /* |
253 | * Data length from read response message | |
254 | * When in_remaining is true, the returned data length is in | |
255 | * message field DataRemaining for out-of-band data read (e.g through | |
256 | * Memory Registration RDMA write in SMBD). | |
257 | * Otherwise, the returned data length is in message field DataLength. | |
258 | */ | |
259 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
260 | /* map smb to linux error */ |
261 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
262 | /* find mid corresponding to the response message */ |
263 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 264 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
265 | void (*clear_stats)(struct cifs_tcon *); |
266 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 267 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 268 | /* verify the message */ |
373512ec | 269 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 270 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
38bd4906 | 271 | int (*handle_cancelled_mid)(char *, struct TCP_Server_Info *); |
9bd45408 PS |
272 | void (*downgrade_oplock)(struct TCP_Server_Info *server, |
273 | struct cifsInodeInfo *cinode, __u32 oplock, | |
274 | unsigned int epoch, bool *purge_cache); | |
316cf94a PS |
275 | /* process transaction2 response */ |
276 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
277 | char *, int); | |
286170aa PS |
278 | /* check if we need to negotiate */ |
279 | bool (*need_neg)(struct TCP_Server_Info *); | |
280 | /* negotiate to the server */ | |
281 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
282 | /* set negotiated write size */ |
283 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
284 | /* set negotiated read size */ | |
285 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
286 | /* setup smb sessionn */ |
287 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
288 | const struct nls_table *); | |
289 | /* close smb session */ | |
290 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
291 | /* connect to a server share */ |
292 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
293 | struct cifs_tcon *, const struct nls_table *); | |
294 | /* close tree connecion */ | |
295 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
296 | /* get DFS referrals */ |
297 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
298 | const char *, struct dfs_info3_param **, | |
299 | unsigned int *, const struct nls_table *, int); | |
af4281dc | 300 | /* informational QFS call */ |
0f060936 AG |
301 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *, |
302 | struct cifs_sb_info *); | |
68889f26 PS |
303 | /* check if a path is accessible or not */ |
304 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
305 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
306 | /* query path data from the server */ |
307 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
308 | struct cifs_sb_info *, const char *, | |
eb85d94b | 309 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
310 | /* query file data from the server */ |
311 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
312 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
313 | /* get server index number */ |
314 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
315 | struct cifs_sb_info *, const char *, | |
316 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
317 | /* set size by path */ |
318 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
319 | const char *, __u64, struct cifs_sb_info *, bool); | |
320 | /* set size by file handle */ | |
321 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
322 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
323 | /* set attributes */ |
324 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
325 | const unsigned int); | |
64a5cfa6 SF |
326 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
327 | struct cifsFileInfo *); | |
f6d76178 PS |
328 | /* check if we can send an echo or nor */ |
329 | bool (*can_echo)(struct TCP_Server_Info *); | |
330 | /* send echo request */ | |
331 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 332 | /* create directory */ |
bea851b8 SF |
333 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
334 | umode_t mode, struct cifs_tcon *tcon, | |
335 | const char *full_path, | |
336 | struct cifs_sb_info *cifs_sb); | |
c3ca78e2 SF |
337 | int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode, |
338 | struct cifs_tcon *tcon, const char *name, | |
339 | struct cifs_sb_info *sb); | |
f436720e PS |
340 | /* set info on created directory */ |
341 | void (*mkdir_setinfo)(struct inode *, const char *, | |
342 | struct cifs_sb_info *, struct cifs_tcon *, | |
343 | const unsigned int); | |
f958ca5d PS |
344 | /* remove directory */ |
345 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
346 | struct cifs_sb_info *); | |
ed6875e0 PS |
347 | /* unlink file */ |
348 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
349 | struct cifs_sb_info *); | |
350 | /* open, rename and delete file */ | |
351 | int (*rename_pending_delete)(const char *, struct dentry *, | |
352 | const unsigned int); | |
8ceb9843 PS |
353 | /* send rename request */ |
354 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
355 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
356 | /* send create hardlink request */ |
357 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
358 | const char *, const char *, | |
359 | struct cifs_sb_info *); | |
b42bf888 PS |
360 | /* query symlink target */ |
361 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
ebaf546a RS |
362 | struct cifs_sb_info *, const char *, |
363 | char **, bool); | |
fb1214e4 | 364 | /* open a file for non-posix mounts */ |
226730b4 PS |
365 | int (*open)(const unsigned int, struct cifs_open_parms *, |
366 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
367 | /* set fid protocol-specific info */ |
368 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 369 | /* close a file */ |
760ad0ca PS |
370 | void (*close)(const unsigned int, struct cifs_tcon *, |
371 | struct cifs_fid *); | |
43f8a6a7 SF |
372 | /* close a file, returning file attributes and timestamps */ |
373 | void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon, | |
374 | struct cifsFileInfo *pfile_info); | |
1d8c4c00 PS |
375 | /* send a flush request to the server */ |
376 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
377 | /* async read from the server */ |
378 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 379 | /* async write to the server */ |
4a5c80d7 SF |
380 | int (*async_writev)(struct cifs_writedata *, |
381 | void (*release)(struct kref *)); | |
f9c6e234 | 382 | /* sync read from the server */ |
db8b631d | 383 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
384 | struct cifs_io_parms *, unsigned int *, char **, |
385 | int *); | |
ba9ad725 | 386 | /* sync write to the server */ |
db8b631d | 387 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
388 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
389 | unsigned long); | |
92fc65a7 PS |
390 | /* open dir, start readdir */ |
391 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
392 | const char *, struct cifs_sb_info *, | |
393 | struct cifs_fid *, __u16, | |
394 | struct cifs_search_info *); | |
395 | /* continue readdir */ | |
396 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
397 | struct cifs_fid *, | |
398 | __u16, struct cifs_search_info *srch_inf); | |
399 | /* close dir */ | |
400 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
401 | struct cifs_fid *); | |
402 | /* calculate a size of SMB message */ | |
9ec672bd | 403 | unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi); |
66265f13 PS |
404 | /* check for STATUS_PENDING and process the response if yes */ |
405 | bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); | |
511c54a2 PS |
406 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
407 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
408 | /* send oplock break response */ |
409 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
410 | struct cifsInodeInfo *); | |
76ec5e33 PS |
411 | /* query remote filesystem */ |
412 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
0f060936 | 413 | struct cifs_sb_info *, struct kstatfs *); |
d39a4f71 PS |
414 | /* send mandatory brlock to the server */ |
415 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
416 | __u64, __u32, int, int, bool); | |
417 | /* unlock range of mandatory locks */ | |
418 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
419 | const unsigned int); | |
420 | /* push brlocks from the cache to the server */ | |
421 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 422 | /* get lease key of the inode */ |
a41a28bd | 423 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 424 | /* set lease key of the inode */ |
a41a28bd | 425 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 426 | /* generate new lease key */ |
a41a28bd | 427 | void (*new_lease_key)(struct cifs_fid *); |
32811d24 | 428 | int (*generate_signingkey)(struct cifs_ses *); |
eda1c54f LL |
429 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *, |
430 | bool allocate_crypto); | |
b3152e2c SF |
431 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
432 | struct cifsFileInfo *src_file); | |
834170c8 SF |
433 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
434 | struct cifsFileInfo *src_file, void __user *); | |
d26c2ddd SF |
435 | int (*notify)(const unsigned int xid, struct file *pfile, |
436 | void __user *pbuf); | |
b5be1a1c SP |
437 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
438 | struct cifs_sb_info *, const unsigned char *, | |
439 | char *, unsigned int *); | |
cbb0aba6 SP |
440 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
441 | struct cifs_sb_info *, const unsigned char *, | |
442 | char *, unsigned int *); | |
53ef1016 PS |
443 | /* if we can do cache read operations */ |
444 | bool (*is_read_op)(__u32); | |
445 | /* set oplock level for the inode */ | |
42873b0a PS |
446 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
447 | bool *); | |
a41a28bd | 448 | /* create lease context buffer for CREATE request */ |
729c0c9d | 449 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 450 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 451 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 452 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 453 | struct cifsFileInfo *src_file, |
620d8745 SP |
454 | struct cifsFileInfo *target_file, |
455 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
456 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
457 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
458 | u64 dest_off); | |
ff1c038a | 459 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
460 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
461 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 462 | size_t, struct cifs_sb_info *); |
666753c3 SF |
463 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
464 | const char *, const void *, const __u16, | |
5517554e | 465 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 SF |
466 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
467 | const char *, u32 *); | |
42eacf9e SF |
468 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
469 | const struct cifs_fid *, u32 *); | |
83e3bc23 SF |
470 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
471 | int); | |
7f6c5008 PS |
472 | /* writepages retry size */ |
473 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
474 | /* get mtu credits */ |
475 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
335b7b62 | 476 | unsigned int *, struct cifs_credits *); |
9a1c67e8 PS |
477 | /* adjust previously taken mtu credits to request size */ |
478 | int (*adjust_credits)(struct TCP_Server_Info *server, | |
479 | struct cifs_credits *credits, | |
480 | const unsigned int payload_size); | |
52755808 PS |
481 | /* check if we need to issue closedir */ |
482 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
483 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
484 | loff_t); | |
7fb8986e | 485 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
486 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
487 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
488 | int (*is_transform_hdr)(void *buf); |
489 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 490 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
491 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
492 | enum securityEnum); | |
8ce79ec3 | 493 | int (*next_header)(char *); |
f5b05d62 RS |
494 | /* ioctl passthrough for query_info */ |
495 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 | 496 | struct cifs_tcon *tcon, |
0f060936 | 497 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 498 | __le16 *path, int is_dir, |
f5b05d62 | 499 | unsigned long p); |
c847dccf AA |
500 | /* make unix special files (block, char, fifo, socket) */ |
501 | int (*make_node)(unsigned int xid, | |
502 | struct inode *inode, | |
503 | struct dentry *dentry, | |
504 | struct cifs_tcon *tcon, | |
505 | char *full_path, | |
506 | umode_t mode, | |
507 | dev_t device_number); | |
2f3ebaba RS |
508 | /* version specific fiemap implementation */ |
509 | int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *, | |
510 | struct fiemap_extent_info *, u64, u64); | |
dece44e3 RS |
511 | /* version specific llseek implementation */ |
512 | loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int); | |
23db65f5 JL |
513 | }; |
514 | ||
515 | struct smb_version_values { | |
516 | char *version_string; | |
e4aa25e7 SF |
517 | __u16 protocol_id; |
518 | __u32 req_capabilities; | |
106dc538 PS |
519 | __u32 large_lock_type; |
520 | __u32 exclusive_lock_type; | |
521 | __u32 shared_lock_type; | |
522 | __u32 unlock_lock_type; | |
93012bf9 | 523 | size_t header_preamble_size; |
1887f601 PS |
524 | size_t header_size; |
525 | size_t max_header_size; | |
eb378711 | 526 | size_t read_rsp_size; |
2dc7e1c0 | 527 | __le16 lock_cmd; |
29e20f9c PS |
528 | unsigned int cap_unix; |
529 | unsigned int cap_nt_find; | |
530 | unsigned int cap_large_files; | |
50285882 JL |
531 | __u16 signing_enabled; |
532 | __u16 signing_required; | |
a41a28bd | 533 | size_t create_lease_size; |
23db65f5 JL |
534 | }; |
535 | ||
1887f601 PS |
536 | #define HEADER_SIZE(server) (server->vals->header_size) |
537 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
538 | ||
f87d39d9 SF |
539 | struct smb_vol { |
540 | char *username; | |
541 | char *password; | |
542 | char *domainname; | |
543 | char *UNC; | |
f87d39d9 SF |
544 | char *iocharset; /* local code page for mapping to and from Unicode */ |
545 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
546 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
3da46565 EB |
547 | kuid_t cred_uid; |
548 | kuid_t linux_uid; | |
549 | kgid_t linux_gid; | |
550 | kuid_t backupuid; | |
551 | kgid_t backupgid; | |
5206efd6 AV |
552 | umode_t file_mode; |
553 | umode_t dir_mode; | |
1e3cc57e JL |
554 | enum securityEnum sectype; /* sectype requested via mnt opts */ |
555 | bool sign; /* was signing requested via mnt opts? */ | |
4f5c10f1 | 556 | bool ignore_signature:1; |
f87d39d9 SF |
557 | bool retry:1; |
558 | bool intr:1; | |
559 | bool setuids:1; | |
95932655 | 560 | bool setuidfromacl:1; |
f87d39d9 SF |
561 | bool override_uid:1; |
562 | bool override_gid:1; | |
563 | bool dynperm:1; | |
564 | bool noperm:1; | |
412094a8 | 565 | bool mode_ace:1; |
f87d39d9 SF |
566 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ |
567 | bool cifs_acl:1; | |
3d3ea8e6 SP |
568 | bool backupuid_specified; /* mount option backupuid is specified */ |
569 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
570 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
571 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
572 | bool direct_io:1; | |
573 | bool strict_io:1; /* strict cache behavior */ | |
83bbfa70 | 574 | bool cache_ro:1; |
41e033fe | 575 | bool cache_rw:1; |
f87d39d9 | 576 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
2baa2682 | 577 | bool sfu_remap:1; /* remap seven reserved chars ala SFU */ |
f87d39d9 SF |
578 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
579 | bool no_linux_ext:1; | |
b326614e | 580 | bool linux_ext:1; |
f87d39d9 SF |
581 | bool sfu_emul:1; |
582 | bool nullauth:1; /* attempt to authenticate with null user */ | |
583 | bool nocase:1; /* request case insensitive filenames */ | |
584 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
3d4ef9a1 | 585 | bool nohandlecache:1; /* disable caching dir handles if srvr probs */ |
f87d39d9 SF |
586 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
587 | bool seal:1; /* request transport encryption on share */ | |
588 | bool nodfs:1; /* Do not request DFS, even if available */ | |
589 | bool local_lease:1; /* check leases only on local system, not remote */ | |
590 | bool noblocksnd:1; | |
591 | bool noautotune:1; | |
592 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
3e7a02d4 | 593 | bool no_lease:1; /* disable requesting leases */ |
f87d39d9 SF |
594 | bool fsc:1; /* enable fscache */ |
595 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
596 | bool multiuser:1; | |
d4ffff1f | 597 | bool rwpidforward:1; /* pid forward for read/write operations */ |
b2a30774 SF |
598 | bool nosharesock:1; |
599 | bool persistent:1; | |
600 | bool nopersistent:1; | |
592fafe6 | 601 | bool resilient:1; /* noresilient not required since not fored for CA */ |
39566443 | 602 | bool domainauto:1; |
8339dd32 | 603 | bool rdma:1; |
bcc88801 AA |
604 | bool multichannel:1; |
605 | bool use_client_guid:1; | |
606 | /* reuse existing guid for multichannel */ | |
607 | u8 client_guid[SMB2_CLIENT_GUID_SIZE]; | |
e8506d25 | 608 | unsigned int bsize; |
f87d39d9 SF |
609 | unsigned int rsize; |
610 | unsigned int wsize; | |
563317ec | 611 | unsigned int min_offload; |
f87d39d9 | 612 | bool sockopt_tcp_nodelay:1; |
f87d39d9 | 613 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
23db65f5 JL |
614 | struct smb_version_operations *ops; |
615 | struct smb_version_values *vals; | |
f87d39d9 | 616 | char *prepath; |
b979aaa1 | 617 | struct sockaddr_storage dstaddr; /* destination address */ |
f87d39d9 SF |
618 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
619 | struct nls_table *local_nls; | |
adfeb3e0 | 620 | unsigned int echo_interval; /* echo interval in secs */ |
8b217fe7 | 621 | __u64 snapshot_time; /* needed for timewarp tokens */ |
ca567eb2 | 622 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
141891f4 | 623 | unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ |
bcc88801 | 624 | unsigned int max_channels; |
9fe5ff1c | 625 | __u16 compression; /* compression algorithm 0xFFFF default 0=disabled */ |
8eecd1c2 | 626 | bool rootfs:1; /* if it's a SMB root file system */ |
f87d39d9 SF |
627 | }; |
628 | ||
d070f9dd AA |
629 | /** |
630 | * CIFS superblock mount flags (mnt_cifs_flags) to consider when | |
631 | * trying to reuse existing superblock for a new mount | |
632 | */ | |
25c7f41e PS |
633 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
634 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
635 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 636 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
637 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
638 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
639 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
640 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
641 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 | 642 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
d070f9dd | 643 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ |
6552d6a0 | 644 | CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ |
83bbfa70 | 645 | CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ |
41e033fe | 646 | CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) |
25c7f41e | 647 | |
d070f9dd AA |
648 | /** |
649 | * Generic VFS superblock mount flags (s_flags) to consider when | |
650 | * trying to reuse existing superblock for a new mount | |
651 | */ | |
1751e8a6 LT |
652 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
653 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
654 | |
655 | struct cifs_mnt_data { | |
656 | struct cifs_sb_info *cifs_sb; | |
657 | struct smb_vol *vol; | |
658 | int flags; | |
659 | }; | |
660 | ||
792af7b0 PS |
661 | static inline unsigned int |
662 | get_rfc1002_length(void *buf) | |
663 | { | |
dca1c8d1 | 664 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
665 | } |
666 | ||
ec2e4523 PS |
667 | static inline void |
668 | inc_rfc1001_len(void *buf, int count) | |
669 | { | |
670 | be32_add_cpu((__be32 *)buf, count); | |
671 | } | |
672 | ||
1da177e4 | 673 | struct TCP_Server_Info { |
3b795210 SF |
674 | struct list_head tcp_ses_list; |
675 | struct list_head smb_ses_list; | |
e7ddee90 | 676 | int srv_count; /* reference counter */ |
a10faeb2 | 677 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 678 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
679 | struct smb_version_operations *ops; |
680 | struct smb_version_values *vals; | |
c3dccf48 | 681 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 682 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 683 | struct socket *ssocket; |
a9f1b85e | 684 | struct sockaddr_storage dstaddr; |
3eb9a889 | 685 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
686 | #ifdef CONFIG_NET_NS |
687 | struct net *net; | |
688 | #endif | |
d38d8c74 | 689 | wait_queue_head_t response_q; |
1da177e4 LT |
690 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
691 | struct list_head pending_mid_q; | |
edf1ae40 SF |
692 | bool noblocksnd; /* use blocking sendmsg */ |
693 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 694 | bool tcp_nodelay; |
141891f4 SF |
695 | unsigned int credits; /* send no more requests at once */ |
696 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 697 | unsigned int in_flight; /* number of requests on the wire to server */ |
1b63f184 | 698 | unsigned int max_in_flight; /* max number of requests that were on wire */ |
2d86dbc9 | 699 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 700 | struct mutex srv_mutex; |
1da177e4 LT |
701 | struct task_struct *tsk; |
702 | char server_GUID[16]; | |
286170aa | 703 | __u16 sec_mode; |
38d77c50 | 704 | bool sign; /* is signing enabled on this connection? */ |
4f5c10f1 | 705 | bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */ |
c3dccf48 | 706 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
707 | int echo_credits; /* echo reserved slots */ |
708 | int oplock_credits; /* oplock break reserved slots */ | |
709 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 710 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 711 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 712 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
713 | unsigned int maxReq; /* Clients should submit no more */ |
714 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 715 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
716 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
717 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
718 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
719 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 720 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
721 | /* message size the server can send or receive for */ |
722 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 723 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 724 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 725 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 726 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 727 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 728 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 729 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 730 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 731 | struct session_key session_key; |
3a5ff61c | 732 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 733 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
734 | #define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ |
735 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ | |
736 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
737 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 738 | /* extended security flavors that server supports */ |
c3dccf48 JL |
739 | bool sec_ntlmssp; /* supports NTLMSSP */ |
740 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
741 | bool sec_kerberos; /* supports plain Kerberos */ |
742 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 743 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
744 | /* use SMBD connection instead of socket */ |
745 | bool rdma; | |
746 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
747 | struct smbd_connection *smbd_conn; | |
c74093b6 | 748 | struct delayed_work echo; /* echo ping workqueue job */ |
2a37ef94 JL |
749 | char *smallbuf; /* pointer to current "small" buffer */ |
750 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
751 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
752 | unsigned int pdu_size; | |
2a37ef94 | 753 | unsigned int total_read; /* total amount of data read in this pass */ |
1ae9a5a5 SF |
754 | atomic_t in_send; /* requests trying to send */ |
755 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
488f1d2d SJ |
756 | #ifdef CONFIG_CIFS_FSCACHE |
757 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
758 | #endif | |
c3dccf48 | 759 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 | 760 | atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */ |
468d6779 | 761 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
433b8dd7 SF |
762 | __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */ |
763 | __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
764 | __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
468d6779 | 765 | #endif /* STATS2 */ |
ec2e4523 PS |
766 | unsigned int max_read; |
767 | unsigned int max_write; | |
563317ec | 768 | unsigned int min_offload; |
26ea888f | 769 | __le16 compress_algorithm; |
5100d8a3 | 770 | __le16 cipher_type; |
8bd68c6e AA |
771 | /* save initital negprot hash */ |
772 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
fcef0db6 | 773 | bool posix_ext_supported; |
53e0e11e PS |
774 | struct delayed_work reconnect; /* reconnect workqueue job */ |
775 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 776 | unsigned long echo_interval; |
93d5cb51 PA |
777 | |
778 | /* | |
779 | * Number of targets available for reconnect. The more targets | |
780 | * the more tasks have to wait to let the demultiplex thread | |
781 | * reconnect. | |
782 | */ | |
783 | int nr_targets; | |
8eecd1c2 | 784 | bool noblockcnt; /* use non-blocking connect() */ |
3345bb44 | 785 | bool is_channel; /* if a session channel */ |
1da177e4 LT |
786 | }; |
787 | ||
335b7b62 PS |
788 | struct cifs_credits { |
789 | unsigned int value; | |
790 | unsigned int instance; | |
791 | }; | |
792 | ||
fc40f9cf PS |
793 | static inline unsigned int |
794 | in_flight(struct TCP_Server_Info *server) | |
795 | { | |
796 | unsigned int num; | |
797 | spin_lock(&server->req_lock); | |
798 | num = server->in_flight; | |
799 | spin_unlock(&server->req_lock); | |
800 | return num; | |
801 | } | |
802 | ||
2d86dbc9 | 803 | static inline bool |
b227d215 | 804 | has_credits(struct TCP_Server_Info *server, int *credits, int num_credits) |
fc40f9cf | 805 | { |
2d86dbc9 | 806 | int num; |
fc40f9cf | 807 | spin_lock(&server->req_lock); |
bc205ed1 | 808 | num = *credits; |
fc40f9cf | 809 | spin_unlock(&server->req_lock); |
b227d215 | 810 | return num >= num_credits; |
fc40f9cf PS |
811 | } |
812 | ||
45275789 | 813 | static inline void |
34f4deb7 | 814 | add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, |
a891f0f8 | 815 | const int optype) |
45275789 | 816 | { |
34f4deb7 | 817 | server->ops->add_credits(server, credits, optype); |
45275789 PS |
818 | } |
819 | ||
cb7e9eab | 820 | static inline void |
335b7b62 PS |
821 | add_credits_and_wake_if(struct TCP_Server_Info *server, |
822 | const struct cifs_credits *credits, const int optype) | |
cb7e9eab | 823 | { |
335b7b62 PS |
824 | if (credits->value) { |
825 | server->ops->add_credits(server, credits, optype); | |
cb7e9eab PS |
826 | wake_up(&server->request_q); |
827 | } | |
828 | } | |
829 | ||
45275789 PS |
830 | static inline void |
831 | set_credits(struct TCP_Server_Info *server, const int val) | |
832 | { | |
833 | server->ops->set_credits(server, val); | |
834 | } | |
835 | ||
9a1c67e8 PS |
836 | static inline int |
837 | adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, | |
838 | const unsigned int payload_size) | |
839 | { | |
840 | return server->ops->adjust_credits ? | |
841 | server->ops->adjust_credits(server, credits, payload_size) : 0; | |
842 | } | |
843 | ||
9235d098 | 844 | static inline __le64 |
3d378d3f | 845 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 846 | { |
9235d098 | 847 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
848 | } |
849 | ||
3d378d3f TG |
850 | static inline __le16 |
851 | get_next_mid(struct TCP_Server_Info *server) | |
852 | { | |
9235d098 | 853 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
854 | /* |
855 | * The value in the SMB header should be little endian for easy | |
856 | * on-the-wire decoding. | |
857 | */ | |
858 | return cpu_to_le16(mid); | |
859 | } | |
860 | ||
c781af7e PS |
861 | static inline void |
862 | revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
863 | { | |
864 | if (server->ops->revert_current_mid) | |
865 | server->ops->revert_current_mid(server, val); | |
866 | } | |
867 | ||
868 | static inline void | |
869 | revert_current_mid_from_hdr(struct TCP_Server_Info *server, | |
870 | const struct smb2_sync_hdr *shdr) | |
871 | { | |
872 | unsigned int num = le16_to_cpu(shdr->CreditCharge); | |
873 | ||
874 | return revert_current_mid(server, num > 0 ? num : 1); | |
875 | } | |
876 | ||
3d378d3f TG |
877 | static inline __u16 |
878 | get_mid(const struct smb_hdr *smb) | |
879 | { | |
880 | return le16_to_cpu(smb->Mid); | |
881 | } | |
882 | ||
883 | static inline bool | |
884 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
885 | { | |
886 | return mid == le16_to_cpu(smb->Mid); | |
887 | } | |
888 | ||
24985c53 PS |
889 | /* |
890 | * When the server supports very large reads and writes via POSIX extensions, | |
891 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
892 | * including the RFC1001 length. | |
893 | * | |
894 | * Note that this might make for "interesting" allocation problems during | |
895 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 896 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
897 | * |
898 | * For reads, there is a similar problem as we need to allocate an array | |
899 | * of kvecs to handle the receive, though that should only need to be done | |
900 | * once. | |
901 | */ | |
902 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
903 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
904 | ||
905 | /* | |
906 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
907 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
908 | * write up to the maximum size described by RFC1002. | |
909 | */ | |
910 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
911 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
912 | ||
913 | /* | |
914 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
ea1754a0 | 915 | * pages in a single call. With PAGE_SIZE == 4k, this means we can fill |
24985c53 PS |
916 | * a single wsize request with a single call. |
917 | */ | |
918 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
3d621230 | 919 | #define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024) |
24985c53 PS |
920 | |
921 | /* | |
922 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
923 | * those values when posix extensions aren't in force. In actuality here, we | |
924 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
925 | * to be ok with the extra byte even though Windows doesn't send writes that | |
926 | * are that large. | |
927 | * | |
928 | * Citation: | |
929 | * | |
930 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
931 | */ | |
932 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
933 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
934 | ||
f1d0c998 RL |
935 | /* |
936 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
937 | * when CONFIG_NET_NS isn't set. | |
938 | */ | |
939 | ||
940 | #ifdef CONFIG_NET_NS | |
941 | ||
942 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
943 | { | |
944 | return srv->net; | |
945 | } | |
946 | ||
947 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
948 | { | |
949 | srv->net = net; | |
950 | } | |
951 | ||
952 | #else | |
953 | ||
954 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
955 | { | |
956 | return &init_net; | |
957 | } | |
958 | ||
959 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
960 | { | |
961 | } | |
962 | ||
963 | #endif | |
964 | ||
b6f0dd5d AA |
965 | struct cifs_server_iface { |
966 | size_t speed; | |
967 | unsigned int rdma_capable : 1; | |
968 | unsigned int rss_capable : 1; | |
969 | struct sockaddr_storage sockaddr; | |
970 | }; | |
971 | ||
bcc88801 AA |
972 | struct cifs_chan { |
973 | struct TCP_Server_Info *server; | |
974 | __u8 signkey[SMB3_SIGN_KEY_SIZE]; | |
975 | }; | |
976 | ||
1da177e4 LT |
977 | /* |
978 | * Session structure. One of these for each uid session with a particular host | |
979 | */ | |
96daf2b0 | 980 | struct cifs_ses { |
14fbf50d | 981 | struct list_head smb_ses_list; |
3b795210 | 982 | struct list_head tcon_list; |
b327a717 | 983 | struct cifs_tcon *tcon_ipc; |
d7b619cf | 984 | struct mutex session_mutex; |
1da177e4 | 985 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 986 | int ses_count; /* reference counter */ |
1da177e4 | 987 | enum statusEnum status; |
750d1151 | 988 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
989 | char *serverOS; /* name of operating system underlying server */ |
990 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 991 | char *serverDomain; /* security realm of server */ |
286170aa | 992 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
993 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
994 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 995 | unsigned int capabilities; |
b327a717 | 996 | char serverName[SERVER_NAME_LEN_WITH_NULL]; |
34c87901 SF |
997 | char *user_name; /* must not be null except during init of sess |
998 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
999 | char *domainName; |
1000 | char *password; | |
5d0d2882 | 1001 | struct session_key auth_key; |
d3686d54 | 1002 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
1003 | enum securityEnum sectype; /* what security flavor was specified? */ |
1004 | bool sign; /* is signing required? */ | |
3b795210 | 1005 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
39566443 | 1006 | bool domainAuto:1; |
f6a6bf7c | 1007 | bool binding:1; /* are we binding the session? */ |
5478f9ba | 1008 | __u16 session_flags; |
373512ec SF |
1009 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
1010 | __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE]; | |
1011 | __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE]; | |
8bd68c6e | 1012 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d | 1013 | |
d70e9fa5 AA |
1014 | __u8 binding_preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
1015 | ||
b6f0dd5d AA |
1016 | /* |
1017 | * Network interfaces available on the server this session is | |
1018 | * connected to. | |
1019 | * | |
1020 | * Other channels can be opened by connecting and binding this | |
1021 | * session to interfaces from this list. | |
1022 | * | |
1023 | * iface_lock should be taken when accessing any of these fields | |
1024 | */ | |
1025 | spinlock_t iface_lock; | |
1026 | struct cifs_server_iface *iface_list; | |
1027 | size_t iface_count; | |
1028 | unsigned long iface_last_update; /* jiffies */ | |
bcc88801 AA |
1029 | |
1030 | #define CIFS_MAX_CHANNELS 16 | |
1031 | struct cifs_chan chans[CIFS_MAX_CHANNELS]; | |
1032 | size_t chan_count; | |
1033 | size_t chan_max; | |
1034 | atomic_t chan_seq; /* round robin state */ | |
1da177e4 | 1035 | }; |
233839b1 | 1036 | |
d70e9fa5 AA |
1037 | /* |
1038 | * When binding a new channel, we need to access the channel which isn't fully | |
1039 | * established yet (one past the established count) | |
1040 | */ | |
1041 | ||
1042 | static inline | |
1043 | struct cifs_chan *cifs_ses_binding_channel(struct cifs_ses *ses) | |
1044 | { | |
1045 | if (ses->binding) | |
1046 | return &ses->chans[ses->chan_count]; | |
1047 | else | |
1048 | return NULL; | |
1049 | } | |
1050 | ||
f6a6bf7c AA |
1051 | static inline |
1052 | struct TCP_Server_Info *cifs_ses_server(struct cifs_ses *ses) | |
1053 | { | |
1054 | if (ses->binding) | |
1055 | return ses->chans[ses->chan_count].server; | |
1056 | else | |
1057 | return ses->server; | |
1058 | } | |
1059 | ||
29e20f9c PS |
1060 | static inline bool |
1061 | cap_unix(struct cifs_ses *ses) | |
1062 | { | |
1063 | return ses->server->vals->cap_unix & ses->capabilities; | |
1064 | } | |
1065 | ||
a93864d9 RS |
1066 | struct cached_fid { |
1067 | bool is_valid:1; /* Do we have a useable root fid */ | |
b0f6df73 | 1068 | bool file_all_info_is_valid:1; |
d9191319 | 1069 | bool has_lease:1; |
9da6ec77 | 1070 | struct kref refcount; |
a93864d9 RS |
1071 | struct cifs_fid *fid; |
1072 | struct mutex fid_mutex; | |
1073 | struct cifs_tcon *tcon; | |
1074 | struct work_struct lease_break; | |
b0f6df73 | 1075 | struct smb2_file_all_info file_all_info; |
a93864d9 RS |
1076 | }; |
1077 | ||
1da177e4 LT |
1078 | /* |
1079 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 1080 | * session |
1da177e4 | 1081 | */ |
96daf2b0 | 1082 | struct cifs_tcon { |
f1987b44 JL |
1083 | struct list_head tcon_list; |
1084 | int tc_count; | |
53e0e11e | 1085 | struct list_head rlist; /* reconnect list */ |
fae8044c SF |
1086 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
1087 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 1088 | struct list_head openFileList; |
3afca265 | 1089 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 1090 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 1091 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 1092 | char *nativeFileSystem; |
00e485b0 | 1093 | char *password; /* for share-level security */ |
faaf946a | 1094 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
1095 | __u16 Flags; /* optional support bits */ |
1096 | enum statusEnum tidStatus; | |
1da177e4 | 1097 | atomic_t num_smbs_sent; |
44c58186 PS |
1098 | union { |
1099 | struct { | |
1100 | atomic_t num_writes; | |
1101 | atomic_t num_reads; | |
1102 | atomic_t num_flushes; | |
1103 | atomic_t num_oplock_brks; | |
1104 | atomic_t num_opens; | |
1105 | atomic_t num_closes; | |
1106 | atomic_t num_deletes; | |
1107 | atomic_t num_mkdirs; | |
1108 | atomic_t num_posixopens; | |
1109 | atomic_t num_posixmkdirs; | |
1110 | atomic_t num_rmdirs; | |
1111 | atomic_t num_renames; | |
1112 | atomic_t num_t2renames; | |
1113 | atomic_t num_ffirst; | |
1114 | atomic_t num_fnext; | |
1115 | atomic_t num_fclose; | |
1116 | atomic_t num_hardlinks; | |
1117 | atomic_t num_symlinks; | |
1118 | atomic_t num_locks; | |
1119 | atomic_t num_acl_get; | |
1120 | atomic_t num_acl_set; | |
1121 | } cifs_stats; | |
d60622eb PS |
1122 | struct { |
1123 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
1124 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
1125 | } smb2_stats; | |
44c58186 | 1126 | } stats; |
1da177e4 LT |
1127 | __u64 bytes_read; |
1128 | __u64 bytes_written; | |
3afca265 | 1129 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 1130 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 1131 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 1132 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
1133 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
1134 | bool pipe:1; /* set if connection to pipe share */ | |
1135 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
1136 | bool retry:1; |
1137 | bool nocase:1; | |
3d4ef9a1 | 1138 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
95b1cb90 | 1139 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 1140 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 1141 | for this mount even if server would support */ |
b326614e | 1142 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 1143 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1144 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1145 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1146 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1147 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1148 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1149 | bool use_persistent:1; /* use persistent instead of durable handles */ |
3e7a02d4 | 1150 | bool no_lease:1; /* Do not request leases on files or directories */ |
769ee6a4 | 1151 | __le32 capabilities; |
faaf946a PS |
1152 | __u32 share_flags; |
1153 | __u32 maximal_access; | |
1154 | __u32 vol_serial_number; | |
1155 | __le64 vol_create_time; | |
8b217fe7 | 1156 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
ca567eb2 | 1157 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
af6a12ea SF |
1158 | __u32 ss_flags; /* sector size flags */ |
1159 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1160 | __u32 max_chunks; |
1161 | __u32 max_bytes_chunk; | |
1162 | __u32 max_bytes_copy; | |
d03382ce SJ |
1163 | #ifdef CONFIG_CIFS_FSCACHE |
1164 | u64 resource_id; /* server resource id */ | |
1165 | struct fscache_cookie *fscache; /* cookie for share */ | |
1166 | #endif | |
233839b1 | 1167 | struct list_head pending_opens; /* list of incomplete opens */ |
a93864d9 | 1168 | struct cached_fid crfid; /* Cached root fid */ |
c18c842b | 1169 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c PA |
1170 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1171 | char *dfs_path; | |
1172 | int remap:2; | |
1173 | struct list_head ulist; /* cache update list */ | |
1174 | #endif | |
1da177e4 LT |
1175 | }; |
1176 | ||
7ffec372 JL |
1177 | /* |
1178 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1179 | * container holds a tcon reference. It is considered safe to free one of | |
1180 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1181 | * "get" on the container. | |
1182 | */ | |
1183 | struct tcon_link { | |
b647c35f | 1184 | struct rb_node tl_rbnode; |
6d4a0832 | 1185 | kuid_t tl_uid; |
9d002df4 JL |
1186 | unsigned long tl_flags; |
1187 | #define TCON_LINK_MASTER 0 | |
1188 | #define TCON_LINK_PENDING 1 | |
1189 | #define TCON_LINK_IN_TREE 2 | |
1190 | unsigned long tl_time; | |
1191 | atomic_t tl_count; | |
96daf2b0 | 1192 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1193 | }; |
1194 | ||
9d002df4 | 1195 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1196 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1197 | |
96daf2b0 | 1198 | static inline struct cifs_tcon * |
7ffec372 JL |
1199 | tlink_tcon(struct tcon_link *tlink) |
1200 | { | |
9d002df4 | 1201 | return tlink->tl_tcon; |
7ffec372 JL |
1202 | } |
1203 | ||
8ddecf5f AA |
1204 | static inline struct tcon_link * |
1205 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1206 | { | |
1207 | return cifs_sb->master_tlink; | |
1208 | } | |
1209 | ||
9d002df4 | 1210 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1211 | |
13cfb733 JL |
1212 | static inline struct tcon_link * |
1213 | cifs_get_tlink(struct tcon_link *tlink) | |
1214 | { | |
9d002df4 JL |
1215 | if (tlink && !IS_ERR(tlink)) |
1216 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1217 | return tlink; |
1218 | } | |
1219 | ||
7ffec372 | 1220 | /* This function is always expected to succeed */ |
96daf2b0 | 1221 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1222 | |
233839b1 PS |
1223 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1224 | ||
1225 | struct cifs_pending_open { | |
1226 | struct list_head olist; | |
1227 | struct tcon_link *tlink; | |
1228 | __u8 lease_key[16]; | |
1229 | __u32 oplock; | |
1230 | }; | |
1231 | ||
1da177e4 | 1232 | /* |
7ee1af76 JA |
1233 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1234 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1235 | */ |
1236 | struct cifsLockInfo { | |
7ee1af76 | 1237 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1238 | struct list_head blist; /* pointer to locks blocked on this */ |
1239 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1240 | __u64 offset; |
1241 | __u64 length; | |
03776f45 | 1242 | __u32 pid; |
9645759c RS |
1243 | __u16 type; |
1244 | __u16 flags; | |
1da177e4 LT |
1245 | }; |
1246 | ||
1247 | /* | |
1248 | * One of these for each open instance of a file | |
1249 | */ | |
1250 | struct cifs_search_info { | |
1251 | loff_t index_of_last_entry; | |
1252 | __u16 entries_in_buffer; | |
1253 | __u16 info_level; | |
1254 | __u32 resume_key; | |
d38d8c74 SF |
1255 | char *ntwrk_buf_start; |
1256 | char *srch_entries_start; | |
0752f152 | 1257 | char *last_entry; |
eaf35b1e | 1258 | const char *presume_name; |
1da177e4 | 1259 | unsigned int resume_name_len; |
4b18f2a9 SF |
1260 | bool endOfSearch:1; |
1261 | bool emptyDir:1; | |
1262 | bool unicode:1; | |
1263 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1264 | }; |
1265 | ||
d0959b08 | 1266 | #define ACL_NO_MODE ((umode_t)(-1)) |
226730b4 PS |
1267 | struct cifs_open_parms { |
1268 | struct cifs_tcon *tcon; | |
1269 | struct cifs_sb_info *cifs_sb; | |
1270 | int disposition; | |
1271 | int desired_access; | |
1272 | int create_options; | |
1273 | const char *path; | |
1274 | struct cifs_fid *fid; | |
ce558b0e | 1275 | umode_t mode; |
9cbc0b73 | 1276 | bool reconnect:1; |
226730b4 PS |
1277 | }; |
1278 | ||
4b4de76e PS |
1279 | struct cifs_fid { |
1280 | __u16 netfid; | |
f0df737e PS |
1281 | __u64 persistent_fid; /* persist file id for smb2 */ |
1282 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1283 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1284 | __u8 create_guid[16]; |
86f740f2 | 1285 | __u32 access; |
233839b1 | 1286 | struct cifs_pending_open *pending_open; |
42873b0a | 1287 | unsigned int epoch; |
dfe33f9a SF |
1288 | #ifdef CONFIG_CIFS_DEBUG2 |
1289 | __u64 mid; | |
1290 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1291 | bool purge_cache; |
4b4de76e PS |
1292 | }; |
1293 | ||
f45d3416 PS |
1294 | struct cifs_fid_locks { |
1295 | struct list_head llist; | |
1296 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1297 | struct list_head locks; /* locks held by fid above */ | |
1298 | }; | |
1299 | ||
1da177e4 | 1300 | struct cifsFileInfo { |
3afca265 | 1301 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1302 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1303 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1304 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1305 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1306 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1307 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1308 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1309 | struct list_head rlist; /* reconnect list */ |
1da177e4 LT |
1310 | /* BB add lock scope info here if needed */ ; |
1311 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1312 | struct dentry *dentry; |
13cfb733 | 1313 | struct tcon_link *tlink; |
3afca265 | 1314 | unsigned int f_flags; |
4b18f2a9 | 1315 | bool invalidHandle:1; /* file closed via session abend */ |
4e8aea30 | 1316 | bool swapfile:1; |
3bc303c2 | 1317 | bool oplock_break_cancelled:1; |
9bd45408 PS |
1318 | unsigned int oplock_epoch; /* epoch from the lease break */ |
1319 | __u32 oplock_level; /* oplock/lease level from the lease break */ | |
3afca265 SF |
1320 | int count; |
1321 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1322 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1323 | struct cifs_search_info srch_inf; |
9b646972 | 1324 | struct work_struct oplock_break; /* work for oplock breaks */ |
32546a95 | 1325 | struct work_struct put; /* work for the final part of _put */ |
1da177e4 LT |
1326 | }; |
1327 | ||
fa2989f4 PS |
1328 | struct cifs_io_parms { |
1329 | __u16 netfid; | |
09a4707e PS |
1330 | __u64 persistent_fid; /* persist file id for smb2 */ |
1331 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1332 | __u32 pid; |
1333 | __u64 offset; | |
1334 | unsigned int length; | |
96daf2b0 | 1335 | struct cifs_tcon *tcon; |
fa2989f4 PS |
1336 | }; |
1337 | ||
ccf7f408 PS |
1338 | struct cifs_aio_ctx { |
1339 | struct kref refcount; | |
1340 | struct list_head list; | |
1341 | struct mutex aio_mutex; | |
1342 | struct completion done; | |
1343 | struct iov_iter iter; | |
1344 | struct kiocb *iocb; | |
1345 | struct cifsFileInfo *cfile; | |
1346 | struct bio_vec *bv; | |
c610c4b6 | 1347 | loff_t pos; |
ccf7f408 PS |
1348 | unsigned int npages; |
1349 | ssize_t rc; | |
1350 | unsigned int len; | |
1351 | unsigned int total_len; | |
1352 | bool should_dirty; | |
6e6e2b86 LL |
1353 | /* |
1354 | * Indicates if this aio_ctx is for direct_io, | |
1355 | * If yes, iter is a copy of the user passed iov_iter | |
1356 | */ | |
1357 | bool direct_io; | |
ccf7f408 PS |
1358 | }; |
1359 | ||
09a4707e PS |
1360 | struct cifs_readdata; |
1361 | ||
1362 | /* asynchronous read support */ | |
1363 | struct cifs_readdata { | |
1364 | struct kref refcount; | |
1365 | struct list_head list; | |
1366 | struct completion done; | |
1367 | struct cifsFileInfo *cfile; | |
1368 | struct address_space *mapping; | |
6685c5e2 | 1369 | struct cifs_aio_ctx *ctx; |
09a4707e PS |
1370 | __u64 offset; |
1371 | unsigned int bytes; | |
34a54d61 | 1372 | unsigned int got_bytes; |
09a4707e PS |
1373 | pid_t pid; |
1374 | int result; | |
09a4707e | 1375 | struct work_struct work; |
8321fec4 JL |
1376 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1377 | struct cifs_readdata *rdata, | |
1378 | unsigned int len); | |
d70b9104 PS |
1379 | int (*copy_into_pages)(struct TCP_Server_Info *server, |
1380 | struct cifs_readdata *rdata, | |
1381 | struct iov_iter *iter); | |
738f9de5 | 1382 | struct kvec iov[2]; |
74dcf418 LL |
1383 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1384 | struct smbd_mr *mr; | |
1385 | #endif | |
8321fec4 | 1386 | unsigned int pagesz; |
57a929a6 | 1387 | unsigned int page_offset; |
8321fec4 | 1388 | unsigned int tailsz; |
335b7b62 | 1389 | struct cifs_credits credits; |
c5fab6f4 | 1390 | unsigned int nr_pages; |
f9f5aca1 | 1391 | struct page **pages; |
09a4707e PS |
1392 | }; |
1393 | ||
33319141 PS |
1394 | struct cifs_writedata; |
1395 | ||
1396 | /* asynchronous write support */ | |
1397 | struct cifs_writedata { | |
1398 | struct kref refcount; | |
1399 | struct list_head list; | |
1400 | struct completion done; | |
1401 | enum writeback_sync_modes sync_mode; | |
1402 | struct work_struct work; | |
1403 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1404 | struct cifs_aio_ctx *ctx; |
33319141 PS |
1405 | __u64 offset; |
1406 | pid_t pid; | |
1407 | unsigned int bytes; | |
1408 | int result; | |
db223a59 LL |
1409 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1410 | struct smbd_mr *mr; | |
1411 | #endif | |
eddb079d | 1412 | unsigned int pagesz; |
57a929a6 | 1413 | unsigned int page_offset; |
eddb079d | 1414 | unsigned int tailsz; |
335b7b62 | 1415 | struct cifs_credits credits; |
33319141 | 1416 | unsigned int nr_pages; |
8e7360f6 | 1417 | struct page **pages; |
33319141 PS |
1418 | }; |
1419 | ||
5f6dbc9e JL |
1420 | /* |
1421 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1422 | * cfile->file_info_lock held. |
5f6dbc9e | 1423 | */ |
764a1b1a JL |
1424 | static inline void |
1425 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1426 | { |
5f6dbc9e | 1427 | ++cifs_file->count; |
6ab409b5 DK |
1428 | } |
1429 | ||
764a1b1a | 1430 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
32546a95 RS |
1431 | void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr, |
1432 | bool offload); | |
b33879aa | 1433 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1434 | |
18cceb6a PS |
1435 | #define CIFS_CACHE_READ_FLG 1 |
1436 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1437 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1438 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1439 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1440 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a | 1441 | |
83bbfa70 | 1442 | #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 | 1443 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
41e033fe | 1444 | #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 | 1445 | |
1da177e4 LT |
1446 | /* |
1447 | * One of these for each file inode | |
1448 | */ | |
1449 | ||
1450 | struct cifsInodeInfo { | |
d59dad2b | 1451 | bool can_cache_brlcks; |
f45d3416 | 1452 | struct list_head llist; /* locks helb by this inode */ |
d46b0da7 DW |
1453 | /* |
1454 | * NOTE: Some code paths call down_read(lock_sem) twice, so | |
1455 | * we must always use use cifs_down_write() instead of down_write() | |
1456 | * for this semaphore to avoid deadlocks. | |
1457 | */ | |
1b4b55a1 | 1458 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1459 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1460 | struct list_head openFileList; |
487317c9 | 1461 | spinlock_t open_file_lock; /* protects openFileList */ |
1da177e4 | 1462 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1463 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1464 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1465 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1466 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
9bd45408 | 1467 | #define CIFS_INODE_FLAG_UNUSED (2) /* Unused flag */ |
aff8d5ca JL |
1468 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1469 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1470 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
aff8d5ca | 1471 | unsigned long flags; |
c11f1df5 SP |
1472 | spinlock_t writers_lock; |
1473 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1474 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1475 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1476 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1477 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1478 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
9451a9a5 SJ |
1479 | #ifdef CONFIG_CIFS_FSCACHE |
1480 | struct fscache_cookie *fscache; | |
1481 | #endif | |
1da177e4 LT |
1482 | struct inode vfs_inode; |
1483 | }; | |
1484 | ||
1485 | static inline struct cifsInodeInfo * | |
1486 | CIFS_I(struct inode *inode) | |
1487 | { | |
1488 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1489 | } | |
1490 | ||
1491 | static inline struct cifs_sb_info * | |
1492 | CIFS_SB(struct super_block *sb) | |
1493 | { | |
1494 | return sb->s_fs_info; | |
1495 | } | |
1496 | ||
7119e220 AV |
1497 | static inline struct cifs_sb_info * |
1498 | CIFS_FILE_SB(struct file *file) | |
1499 | { | |
1500 | return CIFS_SB(file_inode(file)->i_sb); | |
1501 | } | |
1502 | ||
ab2f218f | 1503 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1504 | { |
1505 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1506 | return '/'; | |
1507 | else | |
1508 | return '\\'; | |
1509 | } | |
1da177e4 | 1510 | |
f87d39d9 SF |
1511 | static inline void |
1512 | convert_delimiter(char *path, char delim) | |
1513 | { | |
1cc9bd68 | 1514 | char old_delim, *pos; |
f87d39d9 SF |
1515 | |
1516 | if (delim == '/') | |
1517 | old_delim = '\\'; | |
1518 | else | |
1519 | old_delim = '/'; | |
1520 | ||
1cc9bd68 SF |
1521 | pos = path; |
1522 | while ((pos = strchr(pos, old_delim))) | |
1523 | *pos = delim; | |
f87d39d9 SF |
1524 | } |
1525 | ||
a4544347 SF |
1526 | #define cifs_stats_inc atomic_inc |
1527 | ||
96daf2b0 | 1528 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1529 | unsigned int bytes) |
1530 | { | |
1531 | if (bytes) { | |
1532 | spin_lock(&tcon->stat_lock); | |
1533 | tcon->bytes_written += bytes; | |
1534 | spin_unlock(&tcon->stat_lock); | |
1535 | } | |
1536 | } | |
1537 | ||
96daf2b0 | 1538 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1539 | unsigned int bytes) |
1540 | { | |
1541 | spin_lock(&tcon->stat_lock); | |
1542 | tcon->bytes_read += bytes; | |
1543 | spin_unlock(&tcon->stat_lock); | |
1544 | } | |
a4544347 | 1545 | |
2b84a36c JL |
1546 | |
1547 | /* | |
44d22d84 JL |
1548 | * This is the prototype for the mid receive function. This function is for |
1549 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1550 | * just after the MID in struct smb_hdr). Note: | |
1551 | * | |
1552 | * - This will be called by cifsd, with no locks held. | |
1553 | * - The mid will still be on the pending_mid_q. | |
1554 | * - mid->resp_buf will point to the current buffer. | |
1555 | * | |
1556 | * Returns zero on a successful receive, or an error. The receive state in | |
1557 | * the TCP_Server_Info will also be updated. | |
1558 | */ | |
1559 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1560 | struct mid_q_entry *mid); | |
1561 | ||
1562 | /* | |
1563 | * This is the prototype for the mid callback function. This is called once the | |
1564 | * mid has been received off of the socket. When creating one, take special | |
1565 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1566 | * |
3c1105df JL |
1567 | * - it will be called by cifsd, with no locks held |
1568 | * - the mid will be removed from any lists | |
2b84a36c JL |
1569 | */ |
1570 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1571 | ||
9b7c18a2 PS |
1572 | /* |
1573 | * This is the protopyte for mid handle function. This is called once the mid | |
1574 | * has been recognized after decryption of the message. | |
1575 | */ | |
1576 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1577 | struct mid_q_entry *mid); | |
1578 | ||
1da177e4 LT |
1579 | /* one of these for every pending CIFS request to the server */ |
1580 | struct mid_q_entry { | |
1581 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1582 | struct kref refcount; |
2dc7e1c0 | 1583 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 | 1584 | __u64 mid; /* multiplex id */ |
c781af7e | 1585 | __u16 credits; /* number of credits consumed by this mid */ |
86a7964b | 1586 | __u16 credits_received; /* number of credits from the response */ |
7c9421e1 | 1587 | __u32 pid; /* process id */ |
1da177e4 | 1588 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1589 | unsigned long when_alloc; /* when mid was created */ |
1590 | #ifdef CONFIG_CIFS_STATS2 | |
1591 | unsigned long when_sent; /* time when smb send finished */ | |
1592 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1593 | #endif | |
44d22d84 | 1594 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1595 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1596 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1597 | void *callback_data; /* general purpose pointer for callback */ |
f1f27ad7 | 1598 | struct task_struct *creator; |
d4e4854f | 1599 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1600 | unsigned int resp_buf_size; |
7c9421e1 | 1601 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1602 | unsigned int mid_flags; |
7c9421e1 | 1603 | __le16 command; /* smb command code */ |
8a26f0f7 | 1604 | unsigned int optype; /* operation type */ |
7c9421e1 | 1605 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1606 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1607 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1608 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1609 | }; |
1610 | ||
38bd4906 SP |
1611 | struct close_cancelled_open { |
1612 | struct cifs_fid fid; | |
1613 | struct cifs_tcon *tcon; | |
1614 | struct work_struct work; | |
87bc2376 RS |
1615 | __u64 mid; |
1616 | __u16 cmd; | |
38bd4906 SP |
1617 | }; |
1618 | ||
789e6661 SF |
1619 | /* Make code in transport.c a little cleaner by moving |
1620 | update of optional stats into function below */ | |
789e6661 SF |
1621 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
1622 | { | |
1623 | atomic_inc(&server->in_send); | |
1624 | } | |
1625 | ||
1626 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1627 | { | |
1628 | atomic_dec(&server->in_send); | |
1629 | } | |
1630 | ||
1631 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1632 | { | |
1633 | atomic_inc(&server->num_waiters); | |
1634 | } | |
1635 | ||
1636 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1637 | { | |
1638 | atomic_dec(&server->num_waiters); | |
1639 | } | |
1640 | ||
1ae9a5a5 | 1641 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 SF |
1642 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1643 | { | |
1644 | mid->when_sent = jiffies; | |
1645 | } | |
1646 | #else | |
789e6661 SF |
1647 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1648 | { | |
1649 | } | |
1650 | #endif | |
1da177e4 | 1651 | |
ff5dbd9e SF |
1652 | /* for pending dnotify requests */ |
1653 | struct dir_notify_req { | |
13cd4b7f SF |
1654 | struct list_head lhead; |
1655 | __le16 Pid; | |
1656 | __le16 PidHigh; | |
1657 | __u16 Mid; | |
1658 | __u16 Tid; | |
1659 | __u16 Uid; | |
1660 | __u16 netfid; | |
1661 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1662 | int multishot; | |
1663 | struct file *pfile; | |
ff5dbd9e SF |
1664 | }; |
1665 | ||
366781c1 SF |
1666 | struct dfs_info3_param { |
1667 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1668 | int path_consumed; |
366781c1 SF |
1669 | int server_type; |
1670 | int ref_flag; | |
1671 | char *path_name; | |
1672 | char *node_name; | |
e7b602f4 | 1673 | int ttl; |
366781c1 SF |
1674 | }; |
1675 | ||
cc0bad75 JL |
1676 | /* |
1677 | * common struct for holding inode info when searching for or updating an | |
1678 | * inode with new info | |
1679 | */ | |
1680 | ||
1681 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1682 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1683 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1684 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1685 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
7ea884c7 | 1686 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 |
cc0bad75 JL |
1687 | |
1688 | struct cifs_fattr { | |
1689 | u32 cf_flags; | |
1690 | u32 cf_cifsattrs; | |
1691 | u64 cf_uniqueid; | |
1692 | u64 cf_eof; | |
1693 | u64 cf_bytes; | |
20054bd6 | 1694 | u64 cf_createtime; |
4a2c8cf5 EB |
1695 | kuid_t cf_uid; |
1696 | kgid_t cf_gid; | |
cc0bad75 JL |
1697 | umode_t cf_mode; |
1698 | dev_t cf_rdev; | |
1699 | unsigned int cf_nlink; | |
1700 | unsigned int cf_dtype; | |
95390201 AB |
1701 | struct timespec64 cf_atime; |
1702 | struct timespec64 cf_mtime; | |
1703 | struct timespec64 cf_ctime; | |
046aca3c | 1704 | u32 cf_cifstag; |
cc0bad75 JL |
1705 | }; |
1706 | ||
366781c1 SF |
1707 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1708 | { | |
1709 | if (param) { | |
1710 | kfree(param->path_name); | |
1711 | kfree(param->node_name); | |
366781c1 SF |
1712 | } |
1713 | } | |
1714 | ||
1715 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1716 | int number_of_items) | |
1717 | { | |
1718 | int i; | |
1719 | if ((number_of_items == 0) || (param == NULL)) | |
1720 | return; | |
1721 | for (i = 0; i < number_of_items; i++) { | |
1722 | kfree(param[i].path_name); | |
1723 | kfree(param[i].node_name); | |
1724 | } | |
1725 | kfree(param); | |
1726 | } | |
1727 | ||
9a66396f PS |
1728 | static inline bool is_interrupt_error(int error) |
1729 | { | |
1730 | switch (error) { | |
1731 | case -EINTR: | |
1732 | case -ERESTARTSYS: | |
1733 | case -ERESTARTNOHAND: | |
1734 | case -ERESTARTNOINTR: | |
1735 | return true; | |
1736 | } | |
1737 | return false; | |
1738 | } | |
1739 | ||
1740 | static inline bool is_retryable_error(int error) | |
1741 | { | |
1742 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1743 | return true; | |
1744 | return false; | |
1745 | } | |
1746 | ||
86f740f2 AA |
1747 | |
1748 | /* cifs_get_writable_file() flags */ | |
1749 | #define FIND_WR_ANY 0 | |
1750 | #define FIND_WR_FSUID_ONLY 1 | |
1751 | #define FIND_WR_WITH_DELETE 2 | |
1752 | ||
1da177e4 LT |
1753 | #define MID_FREE 0 |
1754 | #define MID_REQUEST_ALLOCATED 1 | |
1755 | #define MID_REQUEST_SUBMITTED 2 | |
1756 | #define MID_RESPONSE_RECEIVED 4 | |
1757 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1758 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1759 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1760 | |
38bd4906 SP |
1761 | /* Flags */ |
1762 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1763 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1764 | |
ec637e3f SF |
1765 | /* Types of response buffer returned from SendReceive2 */ |
1766 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1767 | #define CIFS_SMALL_BUFFER 1 | |
1768 | #define CIFS_LARGE_BUFFER 2 | |
1769 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1770 | |
133672ef | 1771 | /* Type of Request to SendReceive2 */ |
7749981e | 1772 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
392e1c5d | 1773 | #define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */ |
7749981e | 1774 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
133672ef SF |
1775 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1776 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
392e1c5d | 1777 | #define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */ |
133672ef | 1778 | |
a891f0f8 PS |
1779 | /* Type of request operation */ |
1780 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1781 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1782 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1783 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
7fb8986e | 1784 | |
cb7e9eab | 1785 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
7fb8986e | 1786 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ |
d69cb728 | 1787 | #define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */ |
a891f0f8 | 1788 | |
3979877e SF |
1789 | /* Security Flags: indicate type of session setup needed */ |
1790 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1791 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1792 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1793 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1794 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1795 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1796 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1797 | #else |
1798 | #define CIFSSEC_MAY_LANMAN 0 | |
1799 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1800 | #endif /* weak passwords */ |
1801 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1802 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1803 | |
1804 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1805 | /* note that only one of the following can be set so the | |
1806 | result of setting MUST flags more than once will be to | |
1807 | require use of the stronger protocol */ | |
1808 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1809 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1810 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1811 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1812 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1813 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1814 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1815 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1816 | #else |
20d1752f | 1817 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1818 | #endif /* UPCALL */ |
0d3a01fa | 1819 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1820 | #define CIFSSEC_MUST_LANMAN 0 |
1821 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1822 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1823 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1824 | #else |
ac683924 | 1825 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1826 | #endif /* UPCALL */ |
3979877e SF |
1827 | #endif /* WEAK_PW_HASH */ |
1828 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1829 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1830 | |
896a8fc2 | 1831 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
ef571cad | 1832 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
ac683924 | 1833 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1834 | /* |
1835 | ***************************************************************** | |
1836 | * All constants go here | |
1837 | ***************************************************************** | |
1838 | */ | |
1839 | ||
1840 | #define UID_HASH (16) | |
1841 | ||
1842 | /* | |
1843 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1844 | * following to be declared. | |
1845 | */ | |
1846 | ||
1847 | /**************************************************************************** | |
1848 | * Locking notes. All updates to global variables and lists should be | |
1849 | * protected by spinlocks or semaphores. | |
1850 | * | |
1851 | * Spinlocks | |
1852 | * --------- | |
1853 | * GlobalMid_Lock protects: | |
1854 | * list operations on pending_mid_q and oplockQ | |
1855 | * updates to XID counters, multiplex id and SMB sequence numbers | |
65525802 | 1856 | * list operations on global DnotifyReqList |
3afca265 SF |
1857 | * tcp_ses_lock protects: |
1858 | * list operations on tcp and SMB session lists | |
1859 | * tcon->open_file_lock protects the list of open files hanging off the tcon | |
487317c9 | 1860 | * inode->open_file_lock protects the openFileList hanging off the inode |
3afca265 | 1861 | * cfile->file_info_lock protects counters and fields in cifs file struct |
1da177e4 LT |
1862 | * f_owner.lock protects certain per file struct operations |
1863 | * mapping->page_lock protects certain per page operations | |
1864 | * | |
487317c9 RS |
1865 | * Note that the cifs_tcon.open_file_lock should be taken before |
1866 | * not after the cifsInodeInfo.open_file_lock | |
1867 | * | |
1da177e4 LT |
1868 | * Semaphores |
1869 | * ---------- | |
1870 | * sesSem operations on smb session | |
1871 | * tconSem operations on tree connection | |
d38d8c74 | 1872 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1873 | * |
1874 | ****************************************************************************/ | |
1875 | ||
1876 | #ifdef DECLARE_GLOBALS_HERE | |
1877 | #define GLOBAL_EXTERN | |
1878 | #else | |
1879 | #define GLOBAL_EXTERN extern | |
1880 | #endif | |
1881 | ||
e7ddee90 JL |
1882 | /* |
1883 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1884 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1885 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1886 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1887 | * by iterating over cifs_tcp_ses_list |
1888 | */ | |
1889 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1890 | ||
f1987b44 JL |
1891 | /* |
1892 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1893 | * tcp session, and the list of tcon's per smb session. It also protects | |
d92c7ce4 SF |
1894 | * the reference counters for the server, smb session, and tcon. It also |
1895 | * protects some fields in the TCP_Server_Info struct such as dstaddr. Finally, | |
f1987b44 | 1896 | * changes to the tcon->tidStatus should be done while holding this lock. |
3afca265 SF |
1897 | * generally the locks should be taken in order tcp_ses_lock before |
1898 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1899 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1900 | */ |
3f9bcca7 | 1901 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1902 | |
0eff0e26 | 1903 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1904 | /* Outstanding dir notify requests */ |
1905 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1906 | /* DirNotify response queue */ | |
1907 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1908 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1909 | |
1da177e4 LT |
1910 | /* |
1911 | * Global transaction id (XID) information | |
1912 | */ | |
1913 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1914 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1915 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1916 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1917 | /* on midQ entries */ | |
1da177e4 LT |
1918 | /* |
1919 | * Global counters, updated atomically | |
1920 | */ | |
1921 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1922 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1923 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1924 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1925 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1926 | ||
aaa9bbe0 | 1927 | /* Various Debug counters */ |
4498eed5 SF |
1928 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1929 | #ifdef CONFIG_CIFS_STATS2 | |
1930 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1931 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
00778e22 | 1932 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 SF |
1933 | #endif |
1934 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1935 | GLOBAL_EXTERN atomic_t midCount; |
1936 | ||
1937 | /* Misc globals */ | |
f92a720e SF |
1938 | extern bool enable_oplocks; /* enable or disable oplocks */ |
1939 | extern bool lookupCacheEnabled; | |
1940 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 1941 | with more secure ntlmssp2 challenge/resp */ |
f92a720e SF |
1942 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1943 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1944 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1945 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1946 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
1947 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1948 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ | |
1da177e4 | 1949 | |
4d79dba0 SP |
1950 | GLOBAL_EXTERN struct rb_root uidtree; |
1951 | GLOBAL_EXTERN struct rb_root gidtree; | |
1952 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1953 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1954 | GLOBAL_EXTERN struct rb_root siduidtree; |
1955 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1956 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1957 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
4d79dba0 | 1958 | |
9b646972 | 1959 | void cifs_oplock_break(struct work_struct *work); |
b98749ca | 1960 | void cifs_queue_oplock_break(struct cifsFileInfo *cfile); |
3b7433b8 | 1961 | |
3bc303c2 | 1962 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1963 | extern struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 1964 | extern struct workqueue_struct *decrypt_wq; |
32546a95 | 1965 | extern struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 1966 | extern struct workqueue_struct *cifsoplockd_wq; |
3d22462a | 1967 | extern __u32 cifs_lock_secret; |
abd2e44d | 1968 | |
2dc7e1c0 PS |
1969 | extern mempool_t *cifs_mid_poolp; |
1970 | ||
23db65f5 JL |
1971 | /* Operations for different SMB versions */ |
1972 | #define SMB1_VERSION_STRING "1.0" | |
1973 | extern struct smb_version_operations smb1_operations; | |
1974 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1975 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1976 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1977 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1978 | #define SMB21_VERSION_STRING "2.1" |
1979 | extern struct smb_version_operations smb21_operations; | |
1980 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
1981 | #define SMBDEFAULT_VERSION_STRING "default" |
1982 | extern struct smb_version_values smbdefault_values; | |
1983 | #define SMB3ANY_VERSION_STRING "3" | |
1984 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 1985 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1986 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1987 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 1988 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 1989 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
1990 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
1991 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1992 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1993 | #define ALT_SMB311_VERSION_STRING "3.11" |
1994 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1995 | extern struct smb_version_values smb311_values; |
b8f7442b AA |
1996 | |
1997 | static inline bool is_smb1_server(struct TCP_Server_Info *server) | |
1998 | { | |
1999 | return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0; | |
2000 | } | |
2001 | ||
abd2e44d | 2002 | #endif /* _CIFS_GLOB_H */ |