Commit | Line | Data |
---|---|---|
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> | |
d60622eb PS |
31 | #ifdef CONFIG_CIFS_SMB2 |
32 | #include "smb2pdu.h" | |
33 | #endif | |
d2b91521 | 34 | |
1da177e4 LT |
35 | /* |
36 | * The sizes of various internal tables and strings | |
37 | */ | |
38 | #define MAX_UID_INFO 16 | |
39 | #define MAX_SES_INFO 2 | |
40 | #define MAX_TCON_INFO 4 | |
41 | ||
ef571cad | 42 | #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) |
1da177e4 | 43 | #define MAX_SERVER_SIZE 15 |
2e325d59 | 44 | #define MAX_SHARE_SIZE 80 |
8727c8a8 SF |
45 | #define MAX_USERNAME_SIZE 256 /* reasonable maximum for current servers */ |
46 | #define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ | |
1da177e4 LT |
47 | |
48 | #define CIFS_MIN_RCV_POOL 4 | |
49 | ||
2c0c2a08 | 50 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
51 | /* |
52 | * default attribute cache timeout (jiffies) | |
53 | */ | |
54 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
55 | ||
56 | /* | |
57 | * max attribute cache timeout (jiffies) - 2^30 | |
58 | */ | |
59 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
60 | ||
1da177e4 LT |
61 | /* |
62 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 63 | * on one socket concurrently. |
1da177e4 | 64 | */ |
10b9b98e | 65 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 66 | |
8ecaf67a JL |
67 | #define RFC1001_NAME_LEN 15 |
68 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
69 | ||
70 | /* currently length of NIP6_FMT */ | |
71 | #define SERVER_NAME_LENGTH 40 | |
1da177e4 LT |
72 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
73 | ||
74 | /* used to define string lengths for reversing unicode strings */ | |
75 | /* (256+1)*2 = 514 */ | |
76 | /* (max path length + 1 for null) * 2 for unicode */ | |
77 | #define MAX_NAME 514 | |
78 | ||
9094fad1 PS |
79 | /* SMB echo "timeout" -- FIXME: tunable? */ |
80 | #define SMB_ECHO_INTERVAL (60 * HZ) | |
81 | ||
1da177e4 LT |
82 | #include "cifspdu.h" |
83 | ||
1da177e4 LT |
84 | #ifndef XATTR_DOS_ATTRIB |
85 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
86 | #endif | |
87 | ||
1da177e4 LT |
88 | /* |
89 | * CIFS vfs client Status information (based on what we know.) | |
90 | */ | |
91 | ||
6c0f6218 | 92 | /* associated with each tcp and smb session */ |
1da177e4 LT |
93 | enum statusEnum { |
94 | CifsNew = 0, | |
95 | CifsGood, | |
96 | CifsExiting, | |
fd88ce93 SF |
97 | CifsNeedReconnect, |
98 | CifsNeedNegotiate | |
1da177e4 LT |
99 | }; |
100 | ||
101 | enum securityEnum { | |
daf5b0b6 | 102 | LANMAN = 0, /* Legacy LANMAN auth */ |
3979877e | 103 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 104 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 105 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
f46c7234 | 106 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ |
c16fefa5 | 107 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
108 | }; |
109 | ||
110 | enum protocolEnum { | |
3ec332ef | 111 | TCP = 0, |
1da177e4 LT |
112 | SCTP |
113 | /* Netbios frames protocol not supported at this time */ | |
114 | }; | |
115 | ||
5f98ca9a | 116 | struct session_key { |
b609f06a | 117 | unsigned int len; |
21e73393 | 118 | char *response; |
b609f06a SF |
119 | }; |
120 | ||
d2b91521 SP |
121 | /* crypto security descriptor definition */ |
122 | struct sdesc { | |
123 | struct shash_desc shash; | |
124 | char ctx[]; | |
125 | }; | |
126 | ||
f7c5445a | 127 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
128 | struct cifs_secmech { |
129 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
130 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 131 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
d2b91521 SP |
132 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
133 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 134 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
d2b91521 SP |
135 | }; |
136 | ||
d3686d54 | 137 | /* per smb session structure/fields */ |
d2b91521 SP |
138 | struct ntlmssp_auth { |
139 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ | |
140 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
141 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 142 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
143 | }; |
144 | ||
442aa310 SF |
145 | struct cifs_cred { |
146 | int uid; | |
147 | int gid; | |
148 | int mode; | |
149 | int cecount; | |
150 | struct cifs_sid osid; | |
151 | struct cifs_sid gsid; | |
152 | struct cifs_ntace *ntaces; | |
153 | struct cifs_ace *aces; | |
154 | }; | |
155 | ||
1da177e4 LT |
156 | /* |
157 | ***************************************************************** | |
158 | * Except the CIFS PDUs themselves all the | |
159 | * globally interesting structs should go here | |
160 | ***************************************************************** | |
161 | */ | |
162 | ||
23db65f5 JL |
163 | enum smb_version { |
164 | Smb_1 = 1, | |
1080ef75 | 165 | Smb_21, |
23db65f5 JL |
166 | }; |
167 | ||
121b046a JL |
168 | struct mid_q_entry; |
169 | struct TCP_Server_Info; | |
55157dfb | 170 | struct cifsFileInfo; |
082d0642 | 171 | struct cifs_ses; |
2e6e02ab | 172 | struct cifs_tcon; |
b669f33c | 173 | struct dfs_info3_param; |
1208ef1f | 174 | struct cifs_fattr; |
9224dfc2 | 175 | struct smb_vol; |
fb1214e4 | 176 | struct cifs_fid; |
fc9c5966 | 177 | struct cifs_readdata; |
c9de5c80 | 178 | struct cifs_writedata; |
f9c6e234 | 179 | struct cifs_io_parms; |
92fc65a7 | 180 | struct cifs_search_info; |
95a3f2f3 | 181 | struct cifsInodeInfo; |
121b046a | 182 | |
23db65f5 | 183 | struct smb_version_operations { |
121b046a JL |
184 | int (*send_cancel)(struct TCP_Server_Info *, void *, |
185 | struct mid_q_entry *); | |
55157dfb | 186 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 PS |
187 | /* setup request: allocate mid, sign message */ |
188 | int (*setup_request)(struct cifs_ses *, struct kvec *, unsigned int, | |
189 | struct mid_q_entry **); | |
45740847 PS |
190 | /* setup async request: allocate mid, sign message */ |
191 | int (*setup_async_request)(struct TCP_Server_Info *, struct kvec *, | |
192 | unsigned int, struct mid_q_entry **); | |
082d0642 PS |
193 | /* check response: verify signature, map error */ |
194 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
195 | bool); | |
a891f0f8 PS |
196 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
197 | const int); | |
45275789 | 198 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
199 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
200 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 201 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
eb378711 PS |
202 | /* data offset from read response message */ |
203 | unsigned int (*read_data_offset)(char *); | |
204 | /* data length from read response message */ | |
205 | unsigned int (*read_data_length)(char *); | |
206 | /* map smb to linux error */ | |
207 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
208 | /* find mid corresponding to the response message */ |
209 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
210 | void (*dump_detail)(void *); | |
44c58186 PS |
211 | void (*clear_stats)(struct cifs_tcon *); |
212 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
8aa26f3e PS |
213 | /* verify the message */ |
214 | int (*check_message)(char *, unsigned int); | |
215 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); | |
316cf94a PS |
216 | /* process transaction2 response */ |
217 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
218 | char *, int); | |
286170aa PS |
219 | /* check if we need to negotiate */ |
220 | bool (*need_neg)(struct TCP_Server_Info *); | |
221 | /* negotiate to the server */ | |
222 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
223 | /* set negotiated write size */ |
224 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
225 | /* set negotiated read size */ | |
226 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
227 | /* setup smb sessionn */ |
228 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
229 | const struct nls_table *); | |
230 | /* close smb session */ | |
231 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
232 | /* connect to a server share */ |
233 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
234 | struct cifs_tcon *, const struct nls_table *); | |
235 | /* close tree connecion */ | |
236 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
237 | /* get DFS referrals */ |
238 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
239 | const char *, struct dfs_info3_param **, | |
240 | unsigned int *, const struct nls_table *, int); | |
af4281dc PS |
241 | /* informational QFS call */ |
242 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); | |
68889f26 PS |
243 | /* check if a path is accessible or not */ |
244 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
245 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
246 | /* query path data from the server */ |
247 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
248 | struct cifs_sb_info *, const char *, | |
249 | FILE_ALL_INFO *, bool *); | |
4ad65044 PS |
250 | /* query file data from the server */ |
251 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
252 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
253 | /* get server index number */ |
254 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
255 | struct cifs_sb_info *, const char *, | |
256 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
257 | /* set size by path */ |
258 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
259 | const char *, __u64, struct cifs_sb_info *, bool); | |
260 | /* set size by file handle */ | |
261 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
262 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
263 | /* set attributes */ |
264 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
265 | const unsigned int); | |
9224dfc2 PS |
266 | /* build a full path to the root of the mount */ |
267 | char * (*build_path_to_root)(struct smb_vol *, struct cifs_sb_info *, | |
268 | struct cifs_tcon *); | |
f6d76178 PS |
269 | /* check if we can send an echo or nor */ |
270 | bool (*can_echo)(struct TCP_Server_Info *); | |
271 | /* send echo request */ | |
272 | int (*echo)(struct TCP_Server_Info *); | |
f436720e PS |
273 | /* create directory */ |
274 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, | |
275 | struct cifs_sb_info *); | |
276 | /* set info on created directory */ | |
277 | void (*mkdir_setinfo)(struct inode *, const char *, | |
278 | struct cifs_sb_info *, struct cifs_tcon *, | |
279 | const unsigned int); | |
f958ca5d PS |
280 | /* remove directory */ |
281 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
282 | struct cifs_sb_info *); | |
ed6875e0 PS |
283 | /* unlink file */ |
284 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
285 | struct cifs_sb_info *); | |
286 | /* open, rename and delete file */ | |
287 | int (*rename_pending_delete)(const char *, struct dentry *, | |
288 | const unsigned int); | |
8ceb9843 PS |
289 | /* send rename request */ |
290 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
291 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
292 | /* send create hardlink request */ |
293 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
294 | const char *, const char *, | |
295 | struct cifs_sb_info *); | |
fb1214e4 PS |
296 | /* open a file for non-posix mounts */ |
297 | int (*open)(const unsigned int, struct cifs_tcon *, const char *, int, | |
298 | int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *, | |
299 | struct cifs_sb_info *); | |
300 | /* set fid protocol-specific info */ | |
301 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 PS |
302 | /* close a file */ |
303 | int (*close)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
1d8c4c00 PS |
304 | /* send a flush request to the server */ |
305 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
306 | /* async read from the server */ |
307 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 PS |
308 | /* async write to the server */ |
309 | int (*async_writev)(struct cifs_writedata *); | |
f9c6e234 PS |
310 | /* sync read from the server */ |
311 | int (*sync_read)(const unsigned int, struct cifsFileInfo *, | |
312 | struct cifs_io_parms *, unsigned int *, char **, | |
313 | int *); | |
ba9ad725 PS |
314 | /* sync write to the server */ |
315 | int (*sync_write)(const unsigned int, struct cifsFileInfo *, | |
316 | struct cifs_io_parms *, unsigned int *, struct kvec *, | |
317 | unsigned long); | |
92fc65a7 PS |
318 | /* open dir, start readdir */ |
319 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
320 | const char *, struct cifs_sb_info *, | |
321 | struct cifs_fid *, __u16, | |
322 | struct cifs_search_info *); | |
323 | /* continue readdir */ | |
324 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
325 | struct cifs_fid *, | |
326 | __u16, struct cifs_search_info *srch_inf); | |
327 | /* close dir */ | |
328 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
329 | struct cifs_fid *); | |
330 | /* calculate a size of SMB message */ | |
331 | unsigned int (*calc_smb_size)(void *); | |
2e44b288 PS |
332 | /* check for STATUS_PENDING and process it in a positive case */ |
333 | bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); | |
95a3f2f3 PS |
334 | /* send oplock break response */ |
335 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
336 | struct cifsInodeInfo *); | |
23db65f5 JL |
337 | }; |
338 | ||
339 | struct smb_version_values { | |
340 | char *version_string; | |
106dc538 PS |
341 | __u32 large_lock_type; |
342 | __u32 exclusive_lock_type; | |
343 | __u32 shared_lock_type; | |
344 | __u32 unlock_lock_type; | |
1887f601 PS |
345 | size_t header_size; |
346 | size_t max_header_size; | |
eb378711 | 347 | size_t read_rsp_size; |
2dc7e1c0 | 348 | __le16 lock_cmd; |
29e20f9c PS |
349 | unsigned int cap_unix; |
350 | unsigned int cap_nt_find; | |
351 | unsigned int cap_large_files; | |
23db65f5 JL |
352 | }; |
353 | ||
1887f601 PS |
354 | #define HEADER_SIZE(server) (server->vals->header_size) |
355 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
356 | ||
f87d39d9 SF |
357 | struct smb_vol { |
358 | char *username; | |
359 | char *password; | |
360 | char *domainname; | |
361 | char *UNC; | |
362 | char *UNCip; | |
363 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
364 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
365 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
366 | uid_t cred_uid; | |
367 | uid_t linux_uid; | |
368 | gid_t linux_gid; | |
3d3ea8e6 SP |
369 | uid_t backupuid; |
370 | gid_t backupgid; | |
5206efd6 AV |
371 | umode_t file_mode; |
372 | umode_t dir_mode; | |
f87d39d9 SF |
373 | unsigned secFlg; |
374 | bool retry:1; | |
375 | bool intr:1; | |
376 | bool setuids:1; | |
377 | bool override_uid:1; | |
378 | bool override_gid:1; | |
379 | bool dynperm:1; | |
380 | bool noperm:1; | |
381 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
382 | bool cifs_acl:1; | |
3d3ea8e6 SP |
383 | bool backupuid_specified; /* mount option backupuid is specified */ |
384 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
385 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
386 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
387 | bool direct_io:1; | |
388 | bool strict_io:1; /* strict cache behavior */ | |
389 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
390 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
391 | bool no_linux_ext:1; | |
392 | bool sfu_emul:1; | |
393 | bool nullauth:1; /* attempt to authenticate with null user */ | |
394 | bool nocase:1; /* request case insensitive filenames */ | |
395 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
396 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
397 | bool seal:1; /* request transport encryption on share */ | |
398 | bool nodfs:1; /* Do not request DFS, even if available */ | |
399 | bool local_lease:1; /* check leases only on local system, not remote */ | |
400 | bool noblocksnd:1; | |
401 | bool noautotune:1; | |
402 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
403 | bool fsc:1; /* enable fscache */ | |
404 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
405 | bool multiuser:1; | |
d4ffff1f | 406 | bool rwpidforward:1; /* pid forward for read/write operations */ |
f87d39d9 SF |
407 | unsigned int rsize; |
408 | unsigned int wsize; | |
409 | bool sockopt_tcp_nodelay:1; | |
410 | unsigned short int port; | |
411 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ | |
23db65f5 JL |
412 | struct smb_version_operations *ops; |
413 | struct smb_version_values *vals; | |
f87d39d9 SF |
414 | char *prepath; |
415 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ | |
416 | struct nls_table *local_nls; | |
417 | }; | |
418 | ||
25c7f41e PS |
419 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
420 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
421 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
422 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ | |
423 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
424 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
425 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
426 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
427 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
428 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
429 | |
430 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
431 | MS_NODEV | MS_SYNCHRONOUS) | |
432 | ||
433 | struct cifs_mnt_data { | |
434 | struct cifs_sb_info *cifs_sb; | |
435 | struct smb_vol *vol; | |
436 | int flags; | |
437 | }; | |
438 | ||
792af7b0 PS |
439 | static inline unsigned int |
440 | get_rfc1002_length(void *buf) | |
441 | { | |
442 | return be32_to_cpu(*((__be32 *)buf)); | |
443 | } | |
444 | ||
ec2e4523 PS |
445 | static inline void |
446 | inc_rfc1001_len(void *buf, int count) | |
447 | { | |
448 | be32_add_cpu((__be32 *)buf, count); | |
449 | } | |
450 | ||
1da177e4 | 451 | struct TCP_Server_Info { |
3b795210 SF |
452 | struct list_head tcp_ses_list; |
453 | struct list_head smb_ses_list; | |
e7ddee90 | 454 | int srv_count; /* reference counter */ |
a10faeb2 | 455 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 456 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
457 | struct smb_version_operations *ops; |
458 | struct smb_version_values *vals; | |
c3dccf48 | 459 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 460 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 461 | struct socket *ssocket; |
a9f1b85e | 462 | struct sockaddr_storage dstaddr; |
3eb9a889 | 463 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
464 | #ifdef CONFIG_NET_NS |
465 | struct net *net; | |
466 | #endif | |
d38d8c74 | 467 | wait_queue_head_t response_q; |
1da177e4 LT |
468 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
469 | struct list_head pending_mid_q; | |
edf1ae40 SF |
470 | bool noblocksnd; /* use blocking sendmsg */ |
471 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 472 | bool tcp_nodelay; |
2d86dbc9 | 473 | int credits; /* send no more requests at once */ |
fc40f9cf | 474 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 475 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 476 | struct mutex srv_mutex; |
1da177e4 LT |
477 | struct task_struct *tsk; |
478 | char server_GUID[16]; | |
286170aa | 479 | __u16 sec_mode; |
c3dccf48 | 480 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
481 | #ifdef CONFIG_CIFS_SMB2 |
482 | int echo_credits; /* echo reserved slots */ | |
483 | int oplock_credits; /* oplock break reserved slots */ | |
484 | bool echoes:1; /* enable echoes */ | |
485 | #endif | |
c3dccf48 | 486 | u16 dialect; /* dialect index that server chose */ |
1da177e4 | 487 | enum securityEnum secType; |
10b9b98e | 488 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
489 | unsigned int maxReq; /* Clients should submit no more */ |
490 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
491 | /* multiplexed reads or writes */ | |
492 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
493 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
494 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
495 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 496 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
497 | /* message size the server can send or receive for */ |
498 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
499 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
500 | those that can be specified uniquely with | |
501 | vcnumbers */ | |
29e20f9c | 502 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 503 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 504 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 505 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 506 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 507 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 508 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 509 | struct session_key session_key; |
3a5ff61c | 510 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 511 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
26efa0ba | 512 | /* extended security flavors that server supports */ |
c3dccf48 JL |
513 | bool sec_ntlmssp; /* supports NTLMSSP */ |
514 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
515 | bool sec_kerberos; /* supports plain Kerberos */ |
516 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 517 | bool large_buf; /* is current buffer large? */ |
c74093b6 | 518 | struct delayed_work echo; /* echo ping workqueue job */ |
1041e3f9 JL |
519 | struct kvec *iov; /* reusable kvec array for receives */ |
520 | unsigned int nr_iov; /* number of kvecs in array */ | |
2a37ef94 JL |
521 | char *smallbuf; /* pointer to current "small" buffer */ |
522 | char *bigbuf; /* pointer to current "big" buffer */ | |
523 | unsigned int total_read; /* total amount of data read in this pass */ | |
488f1d2d SJ |
524 | #ifdef CONFIG_CIFS_FSCACHE |
525 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
526 | #endif | |
c3dccf48 | 527 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 528 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
529 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
530 | #endif | |
ec2e4523 PS |
531 | #ifdef CONFIG_CIFS_SMB2 |
532 | unsigned int max_read; | |
533 | unsigned int max_write; | |
534 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 LT |
535 | }; |
536 | ||
fc40f9cf PS |
537 | static inline unsigned int |
538 | in_flight(struct TCP_Server_Info *server) | |
539 | { | |
540 | unsigned int num; | |
541 | spin_lock(&server->req_lock); | |
542 | num = server->in_flight; | |
543 | spin_unlock(&server->req_lock); | |
544 | return num; | |
545 | } | |
546 | ||
2d86dbc9 | 547 | static inline bool |
bc205ed1 | 548 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 549 | { |
2d86dbc9 | 550 | int num; |
fc40f9cf | 551 | spin_lock(&server->req_lock); |
bc205ed1 | 552 | num = *credits; |
fc40f9cf | 553 | spin_unlock(&server->req_lock); |
2d86dbc9 | 554 | return num > 0; |
fc40f9cf PS |
555 | } |
556 | ||
45275789 | 557 | static inline void |
a891f0f8 PS |
558 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
559 | const int optype) | |
45275789 | 560 | { |
a891f0f8 | 561 | server->ops->add_credits(server, add, optype); |
45275789 PS |
562 | } |
563 | ||
564 | static inline void | |
565 | set_credits(struct TCP_Server_Info *server, const int val) | |
566 | { | |
567 | server->ops->set_credits(server, val); | |
568 | } | |
569 | ||
88257360 PS |
570 | static inline __u64 |
571 | get_next_mid(struct TCP_Server_Info *server) | |
572 | { | |
573 | return server->ops->get_next_mid(server); | |
574 | } | |
575 | ||
24985c53 PS |
576 | /* |
577 | * When the server supports very large reads and writes via POSIX extensions, | |
578 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
579 | * including the RFC1001 length. | |
580 | * | |
581 | * Note that this might make for "interesting" allocation problems during | |
582 | * writeback however as we have to allocate an array of pointers for the | |
583 | * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. | |
584 | * | |
585 | * For reads, there is a similar problem as we need to allocate an array | |
586 | * of kvecs to handle the receive, though that should only need to be done | |
587 | * once. | |
588 | */ | |
589 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
590 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
591 | ||
592 | /* | |
593 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
594 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
595 | * write up to the maximum size described by RFC1002. | |
596 | */ | |
597 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
598 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
599 | ||
600 | /* | |
601 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
602 | * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill | |
603 | * a single wsize request with a single call. | |
604 | */ | |
605 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
606 | ||
607 | /* | |
608 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
609 | * those values when posix extensions aren't in force. In actuality here, we | |
610 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
611 | * to be ok with the extra byte even though Windows doesn't send writes that | |
612 | * are that large. | |
613 | * | |
614 | * Citation: | |
615 | * | |
616 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
617 | */ | |
618 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
619 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
620 | ||
621 | /* | |
622 | * On hosts with high memory, we can't currently support wsize/rsize that are | |
623 | * larger than we can kmap at once. Cap the rsize/wsize at | |
624 | * LAST_PKMAP * PAGE_SIZE. We'll never be able to fill a read or write request | |
625 | * larger than that anyway. | |
626 | */ | |
627 | #ifdef CONFIG_HIGHMEM | |
628 | #define CIFS_KMAP_SIZE_LIMIT (LAST_PKMAP * PAGE_CACHE_SIZE) | |
629 | #else /* CONFIG_HIGHMEM */ | |
630 | #define CIFS_KMAP_SIZE_LIMIT (1<<24) | |
631 | #endif /* CONFIG_HIGHMEM */ | |
632 | ||
33319141 PS |
633 | #ifdef CONFIG_HIGHMEM |
634 | /* | |
635 | * On arches that have high memory, kmap address space is limited. By | |
636 | * serializing the kmap operations on those arches, we ensure that we don't | |
637 | * end up with a bunch of threads in writeback with partially mapped page | |
638 | * arrays, stuck waiting for kmap to come back. That situation prevents | |
639 | * progress and can deadlock. | |
640 | */ | |
641 | ||
642 | extern struct mutex cifs_kmap_mutex; | |
643 | ||
644 | static inline void | |
645 | cifs_kmap_lock(void) | |
646 | { | |
647 | mutex_lock(&cifs_kmap_mutex); | |
648 | } | |
649 | ||
650 | static inline void | |
651 | cifs_kmap_unlock(void) | |
652 | { | |
653 | mutex_unlock(&cifs_kmap_mutex); | |
654 | } | |
655 | #else /* !CONFIG_HIGHMEM */ | |
656 | #define cifs_kmap_lock() do { ; } while (0) | |
657 | #define cifs_kmap_unlock() do { ; } while (0) | |
658 | #endif /* CONFIG_HIGHMEM */ | |
659 | ||
f1d0c998 RL |
660 | /* |
661 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
662 | * when CONFIG_NET_NS isn't set. | |
663 | */ | |
664 | ||
665 | #ifdef CONFIG_NET_NS | |
666 | ||
667 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
668 | { | |
669 | return srv->net; | |
670 | } | |
671 | ||
672 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
673 | { | |
674 | srv->net = net; | |
675 | } | |
676 | ||
677 | #else | |
678 | ||
679 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
680 | { | |
681 | return &init_net; | |
682 | } | |
683 | ||
684 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
685 | { | |
686 | } | |
687 | ||
688 | #endif | |
689 | ||
1da177e4 LT |
690 | /* |
691 | * Session structure. One of these for each uid session with a particular host | |
692 | */ | |
96daf2b0 | 693 | struct cifs_ses { |
14fbf50d | 694 | struct list_head smb_ses_list; |
3b795210 | 695 | struct list_head tcon_list; |
d7b619cf | 696 | struct mutex session_mutex; |
1da177e4 | 697 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 698 | int ses_count; /* reference counter */ |
1da177e4 | 699 | enum statusEnum status; |
750d1151 | 700 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
701 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
702 | __u16 flags; | |
eca6acf9 | 703 | __u16 vcnum; |
ad009ac9 SF |
704 | char *serverOS; /* name of operating system underlying server */ |
705 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 706 | char *serverDomain; /* security realm of server */ |
286170aa | 707 | __u64 Suid; /* remote smb uid */ |
3e4b3e1f JL |
708 | uid_t linux_uid; /* overriding owner of files on the mount */ |
709 | uid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 710 | unsigned int capabilities; |
d38d8c74 | 711 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 712 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
713 | char *user_name; /* must not be null except during init of sess |
714 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
715 | char *domainName; |
716 | char *password; | |
5d0d2882 | 717 | struct session_key auth_key; |
d3686d54 | 718 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
3b795210 | 719 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
5478f9ba PS |
720 | #ifdef CONFIG_CIFS_SMB2 |
721 | __u16 session_flags; | |
722 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 | 723 | }; |
9ac00b7d | 724 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 725 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
726 | #define CIFS_SES_OS2 2 |
727 | #define CIFS_SES_W9X 4 | |
728 | /* following flag is set for old servers such as OS2 (and Win95?) | |
729 | which do not negotiate NTLM or POSIX dialects, but instead | |
730 | negotiate one of the older LANMAN dialects */ | |
731 | #define CIFS_SES_LANMAN 8 | |
29e20f9c PS |
732 | |
733 | static inline bool | |
734 | cap_unix(struct cifs_ses *ses) | |
735 | { | |
736 | return ses->server->vals->cap_unix & ses->capabilities; | |
737 | } | |
738 | ||
1da177e4 LT |
739 | /* |
740 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 741 | * session |
1da177e4 | 742 | */ |
96daf2b0 | 743 | struct cifs_tcon { |
f1987b44 JL |
744 | struct list_head tcon_list; |
745 | int tc_count; | |
1da177e4 | 746 | struct list_head openFileList; |
96daf2b0 | 747 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 748 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 749 | char *nativeFileSystem; |
00e485b0 | 750 | char *password; /* for share-level security */ |
faaf946a | 751 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
752 | __u16 Flags; /* optional support bits */ |
753 | enum statusEnum tidStatus; | |
1da177e4 LT |
754 | #ifdef CONFIG_CIFS_STATS |
755 | atomic_t num_smbs_sent; | |
44c58186 PS |
756 | union { |
757 | struct { | |
758 | atomic_t num_writes; | |
759 | atomic_t num_reads; | |
760 | atomic_t num_flushes; | |
761 | atomic_t num_oplock_brks; | |
762 | atomic_t num_opens; | |
763 | atomic_t num_closes; | |
764 | atomic_t num_deletes; | |
765 | atomic_t num_mkdirs; | |
766 | atomic_t num_posixopens; | |
767 | atomic_t num_posixmkdirs; | |
768 | atomic_t num_rmdirs; | |
769 | atomic_t num_renames; | |
770 | atomic_t num_t2renames; | |
771 | atomic_t num_ffirst; | |
772 | atomic_t num_fnext; | |
773 | atomic_t num_fclose; | |
774 | atomic_t num_hardlinks; | |
775 | atomic_t num_symlinks; | |
776 | atomic_t num_locks; | |
777 | atomic_t num_acl_get; | |
778 | atomic_t num_acl_set; | |
779 | } cifs_stats; | |
d60622eb PS |
780 | #ifdef CONFIG_CIFS_SMB2 |
781 | struct { | |
782 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
783 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
784 | } smb2_stats; | |
785 | #endif /* CONFIG_CIFS_SMB2 */ | |
44c58186 | 786 | } stats; |
a5a2b489 SF |
787 | #ifdef CONFIG_CIFS_STATS2 |
788 | unsigned long long time_writes; | |
789 | unsigned long long time_reads; | |
790 | unsigned long long time_opens; | |
791 | unsigned long long time_deletes; | |
792 | unsigned long long time_closes; | |
793 | unsigned long long time_mkdirs; | |
794 | unsigned long long time_rmdirs; | |
795 | unsigned long long time_renames; | |
796 | unsigned long long time_t2renames; | |
797 | unsigned long long time_ffirst; | |
798 | unsigned long long time_fnext; | |
799 | unsigned long long time_fclose; | |
800 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
801 | __u64 bytes_read; |
802 | __u64 bytes_written; | |
803 | spinlock_t stat_lock; | |
a5a2b489 | 804 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 805 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 806 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 807 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
808 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
809 | bool retry:1; | |
810 | bool nocase:1; | |
95b1cb90 | 811 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 812 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 813 | for this mount even if server would support */ |
84210e91 | 814 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 815 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 816 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
faaf946a PS |
817 | #ifdef CONFIG_CIFS_SMB2 |
818 | bool print:1; /* set if connection to printer share */ | |
819 | bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ | |
820 | __u32 capabilities; | |
821 | __u32 share_flags; | |
822 | __u32 maximal_access; | |
823 | __u32 vol_serial_number; | |
824 | __le64 vol_create_time; | |
825 | #endif /* CONFIG_CIFS_SMB2 */ | |
d03382ce SJ |
826 | #ifdef CONFIG_CIFS_FSCACHE |
827 | u64 resource_id; /* server resource id */ | |
828 | struct fscache_cookie *fscache; /* cookie for share */ | |
829 | #endif | |
c18c842b | 830 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
831 | }; |
832 | ||
7ffec372 JL |
833 | /* |
834 | * This is a refcounted and timestamped container for a tcon pointer. The | |
835 | * container holds a tcon reference. It is considered safe to free one of | |
836 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
837 | * "get" on the container. | |
838 | */ | |
839 | struct tcon_link { | |
b647c35f JL |
840 | struct rb_node tl_rbnode; |
841 | uid_t tl_uid; | |
9d002df4 JL |
842 | unsigned long tl_flags; |
843 | #define TCON_LINK_MASTER 0 | |
844 | #define TCON_LINK_PENDING 1 | |
845 | #define TCON_LINK_IN_TREE 2 | |
846 | unsigned long tl_time; | |
847 | atomic_t tl_count; | |
96daf2b0 | 848 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
849 | }; |
850 | ||
9d002df4 | 851 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 852 | |
96daf2b0 | 853 | static inline struct cifs_tcon * |
7ffec372 JL |
854 | tlink_tcon(struct tcon_link *tlink) |
855 | { | |
9d002df4 | 856 | return tlink->tl_tcon; |
7ffec372 JL |
857 | } |
858 | ||
9d002df4 | 859 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 860 | |
13cfb733 JL |
861 | static inline struct tcon_link * |
862 | cifs_get_tlink(struct tcon_link *tlink) | |
863 | { | |
9d002df4 JL |
864 | if (tlink && !IS_ERR(tlink)) |
865 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
866 | return tlink; |
867 | } | |
868 | ||
7ffec372 | 869 | /* This function is always expected to succeed */ |
96daf2b0 | 870 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 871 | |
1da177e4 | 872 | /* |
7ee1af76 JA |
873 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
874 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
875 | */ |
876 | struct cifsLockInfo { | |
7ee1af76 | 877 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
878 | struct list_head blist; /* pointer to locks blocked on this */ |
879 | wait_queue_head_t block_q; | |
7ee1af76 JA |
880 | __u64 offset; |
881 | __u64 length; | |
03776f45 | 882 | __u32 pid; |
04a6aa8a | 883 | __u32 type; |
1da177e4 LT |
884 | }; |
885 | ||
886 | /* | |
887 | * One of these for each open instance of a file | |
888 | */ | |
889 | struct cifs_search_info { | |
890 | loff_t index_of_last_entry; | |
891 | __u16 entries_in_buffer; | |
892 | __u16 info_level; | |
893 | __u32 resume_key; | |
d38d8c74 SF |
894 | char *ntwrk_buf_start; |
895 | char *srch_entries_start; | |
0752f152 | 896 | char *last_entry; |
eaf35b1e | 897 | const char *presume_name; |
1da177e4 | 898 | unsigned int resume_name_len; |
4b18f2a9 SF |
899 | bool endOfSearch:1; |
900 | bool emptyDir:1; | |
901 | bool unicode:1; | |
902 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
903 | }; |
904 | ||
4b4de76e PS |
905 | struct cifs_fid { |
906 | __u16 netfid; | |
f0df737e PS |
907 | #ifdef CONFIG_CIFS_SMB2 |
908 | __u64 persistent_fid; /* persist file id for smb2 */ | |
909 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
910 | #endif | |
4b4de76e PS |
911 | }; |
912 | ||
1da177e4 LT |
913 | struct cifsFileInfo { |
914 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
915 | struct list_head flist; /* next fid (file instance) for this inode */ | |
fbd35aca PS |
916 | struct list_head llist; /* |
917 | * brlocks held by this fid, protected by | |
918 | * lock_mutex from cifsInodeInfo structure | |
919 | */ | |
1da177e4 LT |
920 | unsigned int uid; /* allows finding which FileInfo structure */ |
921 | __u32 pid; /* process id who opened file */ | |
4b4de76e | 922 | struct cifs_fid fid; /* file id from remote */ |
1da177e4 LT |
923 | /* BB add lock scope info here if needed */ ; |
924 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 925 | struct dentry *dentry; |
15886177 | 926 | unsigned int f_flags; |
13cfb733 | 927 | struct tcon_link *tlink; |
4b18f2a9 | 928 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 929 | bool oplock_break_cancelled:1; |
6c0f6218 | 930 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 931 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 932 | struct cifs_search_info srch_inf; |
9b646972 | 933 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
934 | }; |
935 | ||
fa2989f4 PS |
936 | struct cifs_io_parms { |
937 | __u16 netfid; | |
09a4707e PS |
938 | #ifdef CONFIG_CIFS_SMB2 |
939 | __u64 persistent_fid; /* persist file id for smb2 */ | |
940 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
941 | #endif | |
fa2989f4 PS |
942 | __u32 pid; |
943 | __u64 offset; | |
944 | unsigned int length; | |
96daf2b0 | 945 | struct cifs_tcon *tcon; |
fa2989f4 PS |
946 | }; |
947 | ||
09a4707e PS |
948 | struct cifs_readdata; |
949 | ||
950 | /* asynchronous read support */ | |
951 | struct cifs_readdata { | |
952 | struct kref refcount; | |
953 | struct list_head list; | |
954 | struct completion done; | |
955 | struct cifsFileInfo *cfile; | |
956 | struct address_space *mapping; | |
957 | __u64 offset; | |
958 | unsigned int bytes; | |
959 | pid_t pid; | |
960 | int result; | |
961 | struct list_head pages; | |
962 | struct work_struct work; | |
963 | int (*marshal_iov) (struct cifs_readdata *rdata, | |
964 | unsigned int remaining); | |
965 | unsigned int nr_iov; | |
966 | struct kvec iov[1]; | |
967 | }; | |
968 | ||
33319141 PS |
969 | struct cifs_writedata; |
970 | ||
971 | /* asynchronous write support */ | |
972 | struct cifs_writedata { | |
973 | struct kref refcount; | |
974 | struct list_head list; | |
975 | struct completion done; | |
976 | enum writeback_sync_modes sync_mode; | |
977 | struct work_struct work; | |
978 | struct cifsFileInfo *cfile; | |
979 | __u64 offset; | |
980 | pid_t pid; | |
981 | unsigned int bytes; | |
982 | int result; | |
983 | void (*marshal_iov) (struct kvec *iov, | |
984 | struct cifs_writedata *wdata); | |
985 | unsigned int nr_pages; | |
986 | struct page *pages[1]; | |
987 | }; | |
988 | ||
5f6dbc9e JL |
989 | /* |
990 | * Take a reference on the file private data. Must be called with | |
991 | * cifs_file_list_lock held. | |
992 | */ | |
764a1b1a JL |
993 | static inline void |
994 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 995 | { |
5f6dbc9e | 996 | ++cifs_file->count; |
6ab409b5 DK |
997 | } |
998 | ||
764a1b1a | 999 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
b33879aa | 1000 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1001 | |
1da177e4 LT |
1002 | /* |
1003 | * One of these for each file inode | |
1004 | */ | |
1005 | ||
1006 | struct cifsInodeInfo { | |
d59dad2b | 1007 | bool can_cache_brlcks; |
fbd35aca PS |
1008 | struct mutex lock_mutex; /* |
1009 | * protect the field above and llist | |
1010 | * from every cifsFileInfo structure | |
1011 | * from openFileList | |
1012 | */ | |
d38d8c74 | 1013 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1014 | struct list_head openFileList; |
1da177e4 | 1015 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
aae62fdb JL |
1016 | bool clientCanCacheRead; /* read oplock */ |
1017 | bool clientCanCacheAll; /* read and writebehind oplock */ | |
1018 | bool delete_pending; /* DELETE_ON_CLOSE is set */ | |
1019 | bool invalid_mapping; /* pagecache is invalid */ | |
1020 | unsigned long time; /* jiffies of last update of inode */ | |
597b027f | 1021 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1022 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1023 | u64 createtime; /* creation time on server */ |
9451a9a5 SJ |
1024 | #ifdef CONFIG_CIFS_FSCACHE |
1025 | struct fscache_cookie *fscache; | |
1026 | #endif | |
1da177e4 LT |
1027 | struct inode vfs_inode; |
1028 | }; | |
1029 | ||
1030 | static inline struct cifsInodeInfo * | |
1031 | CIFS_I(struct inode *inode) | |
1032 | { | |
1033 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1034 | } | |
1035 | ||
1036 | static inline struct cifs_sb_info * | |
1037 | CIFS_SB(struct super_block *sb) | |
1038 | { | |
1039 | return sb->s_fs_info; | |
1040 | } | |
1041 | ||
ab2f218f | 1042 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1043 | { |
1044 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1045 | return '/'; | |
1046 | else | |
1047 | return '\\'; | |
1048 | } | |
1da177e4 | 1049 | |
f87d39d9 SF |
1050 | static inline void |
1051 | convert_delimiter(char *path, char delim) | |
1052 | { | |
1053 | int i; | |
1054 | char old_delim; | |
1055 | ||
1056 | if (path == NULL) | |
1057 | return; | |
1058 | ||
1059 | if (delim == '/') | |
1060 | old_delim = '\\'; | |
1061 | else | |
1062 | old_delim = '/'; | |
1063 | ||
1064 | for (i = 0; path[i] != '\0'; i++) { | |
1065 | if (path[i] == old_delim) | |
1066 | path[i] = delim; | |
1067 | } | |
1068 | } | |
1069 | ||
9224dfc2 PS |
1070 | static inline char * |
1071 | build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, | |
1072 | struct cifs_tcon *tcon) | |
1073 | { | |
1074 | if (!vol->ops->build_path_to_root) | |
1075 | return NULL; | |
1076 | return vol->ops->build_path_to_root(vol, cifs_sb, tcon); | |
1077 | } | |
1078 | ||
a4544347 SF |
1079 | #ifdef CONFIG_CIFS_STATS |
1080 | #define cifs_stats_inc atomic_inc | |
1081 | ||
96daf2b0 | 1082 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1083 | unsigned int bytes) |
1084 | { | |
1085 | if (bytes) { | |
1086 | spin_lock(&tcon->stat_lock); | |
1087 | tcon->bytes_written += bytes; | |
1088 | spin_unlock(&tcon->stat_lock); | |
1089 | } | |
1090 | } | |
1091 | ||
96daf2b0 | 1092 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1093 | unsigned int bytes) |
1094 | { | |
1095 | spin_lock(&tcon->stat_lock); | |
1096 | tcon->bytes_read += bytes; | |
1097 | spin_unlock(&tcon->stat_lock); | |
1098 | } | |
1099 | #else | |
1100 | ||
d38d8c74 SF |
1101 | #define cifs_stats_inc(field) do {} while (0) |
1102 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
1103 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
1104 | |
1105 | #endif | |
1106 | ||
2b84a36c JL |
1107 | |
1108 | /* | |
44d22d84 JL |
1109 | * This is the prototype for the mid receive function. This function is for |
1110 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1111 | * just after the MID in struct smb_hdr). Note: | |
1112 | * | |
1113 | * - This will be called by cifsd, with no locks held. | |
1114 | * - The mid will still be on the pending_mid_q. | |
1115 | * - mid->resp_buf will point to the current buffer. | |
1116 | * | |
1117 | * Returns zero on a successful receive, or an error. The receive state in | |
1118 | * the TCP_Server_Info will also be updated. | |
1119 | */ | |
1120 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1121 | struct mid_q_entry *mid); | |
1122 | ||
1123 | /* | |
1124 | * This is the prototype for the mid callback function. This is called once the | |
1125 | * mid has been received off of the socket. When creating one, take special | |
1126 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1127 | * |
3c1105df JL |
1128 | * - it will be called by cifsd, with no locks held |
1129 | * - the mid will be removed from any lists | |
2b84a36c JL |
1130 | */ |
1131 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1132 | ||
1da177e4 LT |
1133 | /* one of these for every pending CIFS request to the server */ |
1134 | struct mid_q_entry { | |
1135 | struct list_head qhead; /* mids waiting on reply from this server */ | |
2dc7e1c0 | 1136 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
1137 | __u64 mid; /* multiplex id */ |
1138 | __u32 pid; /* process id */ | |
1da177e4 | 1139 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1140 | unsigned long when_alloc; /* when mid was created */ |
1141 | #ifdef CONFIG_CIFS_STATS2 | |
1142 | unsigned long when_sent; /* time when smb send finished */ | |
1143 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1144 | #endif | |
44d22d84 | 1145 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c JL |
1146 | mid_callback_t *callback; /* call completion callback */ |
1147 | void *callback_data; /* general purpose pointer for callback */ | |
d4e4854f | 1148 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 PS |
1149 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
1150 | __le16 command; /* smb command code */ | |
1151 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
1152 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1153 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
1154 | }; |
1155 | ||
789e6661 SF |
1156 | /* Make code in transport.c a little cleaner by moving |
1157 | update of optional stats into function below */ | |
1158 | #ifdef CONFIG_CIFS_STATS2 | |
1159 | ||
1160 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1161 | { | |
1162 | atomic_inc(&server->in_send); | |
1163 | } | |
1164 | ||
1165 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1166 | { | |
1167 | atomic_dec(&server->in_send); | |
1168 | } | |
1169 | ||
1170 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1171 | { | |
1172 | atomic_inc(&server->num_waiters); | |
1173 | } | |
1174 | ||
1175 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1176 | { | |
1177 | atomic_dec(&server->num_waiters); | |
1178 | } | |
1179 | ||
1180 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1181 | { | |
1182 | mid->when_sent = jiffies; | |
1183 | } | |
1184 | #else | |
1185 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1186 | { | |
1187 | } | |
1188 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1189 | { | |
1190 | } | |
1191 | ||
1192 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1193 | { | |
1194 | } | |
1195 | ||
1196 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1197 | { | |
1198 | } | |
1199 | ||
1200 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1201 | { | |
1202 | } | |
1203 | #endif | |
1da177e4 | 1204 | |
ff5dbd9e SF |
1205 | /* for pending dnotify requests */ |
1206 | struct dir_notify_req { | |
13cd4b7f SF |
1207 | struct list_head lhead; |
1208 | __le16 Pid; | |
1209 | __le16 PidHigh; | |
1210 | __u16 Mid; | |
1211 | __u16 Tid; | |
1212 | __u16 Uid; | |
1213 | __u16 netfid; | |
1214 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1215 | int multishot; | |
1216 | struct file *pfile; | |
ff5dbd9e SF |
1217 | }; |
1218 | ||
366781c1 SF |
1219 | struct dfs_info3_param { |
1220 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1221 | int path_consumed; |
366781c1 SF |
1222 | int server_type; |
1223 | int ref_flag; | |
1224 | char *path_name; | |
1225 | char *node_name; | |
1226 | }; | |
1227 | ||
cc0bad75 JL |
1228 | /* |
1229 | * common struct for holding inode info when searching for or updating an | |
1230 | * inode with new info | |
1231 | */ | |
1232 | ||
1233 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1234 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1235 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1236 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
1237 | |
1238 | struct cifs_fattr { | |
1239 | u32 cf_flags; | |
1240 | u32 cf_cifsattrs; | |
1241 | u64 cf_uniqueid; | |
1242 | u64 cf_eof; | |
1243 | u64 cf_bytes; | |
20054bd6 | 1244 | u64 cf_createtime; |
cc0bad75 JL |
1245 | uid_t cf_uid; |
1246 | gid_t cf_gid; | |
1247 | umode_t cf_mode; | |
1248 | dev_t cf_rdev; | |
1249 | unsigned int cf_nlink; | |
1250 | unsigned int cf_dtype; | |
1251 | struct timespec cf_atime; | |
1252 | struct timespec cf_mtime; | |
1253 | struct timespec cf_ctime; | |
1254 | }; | |
1255 | ||
366781c1 SF |
1256 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1257 | { | |
1258 | if (param) { | |
1259 | kfree(param->path_name); | |
1260 | kfree(param->node_name); | |
1261 | kfree(param); | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1266 | int number_of_items) | |
1267 | { | |
1268 | int i; | |
1269 | if ((number_of_items == 0) || (param == NULL)) | |
1270 | return; | |
1271 | for (i = 0; i < number_of_items; i++) { | |
1272 | kfree(param[i].path_name); | |
1273 | kfree(param[i].node_name); | |
1274 | } | |
1275 | kfree(param); | |
1276 | } | |
1277 | ||
1da177e4 LT |
1278 | #define MID_FREE 0 |
1279 | #define MID_REQUEST_ALLOCATED 1 | |
1280 | #define MID_REQUEST_SUBMITTED 2 | |
1281 | #define MID_RESPONSE_RECEIVED 4 | |
1282 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1283 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1284 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
1285 | |
1286 | /* Types of response buffer returned from SendReceive2 */ | |
1287 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1288 | #define CIFS_SMALL_BUFFER 1 | |
1289 | #define CIFS_LARGE_BUFFER 2 | |
1290 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1291 | |
133672ef | 1292 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1293 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1294 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1295 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1296 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1297 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1298 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1299 | ||
a891f0f8 PS |
1300 | /* Type of request operation */ |
1301 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1302 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1303 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1304 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
a891f0f8 | 1305 | |
3979877e SF |
1306 | /* Security Flags: indicate type of session setup needed */ |
1307 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1308 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1309 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1310 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1311 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1312 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1313 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1314 | #else |
1315 | #define CIFSSEC_MAY_LANMAN 0 | |
1316 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1317 | #endif /* weak passwords */ |
1318 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1319 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1320 | |
1321 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1322 | /* note that only one of the following can be set so the | |
1323 | result of setting MUST flags more than once will be to | |
1324 | require use of the stronger protocol */ | |
1325 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1326 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1327 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1328 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1329 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1330 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1331 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1332 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1333 | #else |
20d1752f | 1334 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1335 | #endif /* UPCALL */ |
0d3a01fa | 1336 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1337 | #define CIFSSEC_MUST_LANMAN 0 |
1338 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1339 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1340 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1341 | #else |
ac683924 | 1342 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1343 | #endif /* UPCALL */ |
3979877e SF |
1344 | #endif /* WEAK_PW_HASH */ |
1345 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1346 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1347 | |
ef571cad SP |
1348 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
1349 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 1350 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1351 | /* |
1352 | ***************************************************************** | |
1353 | * All constants go here | |
1354 | ***************************************************************** | |
1355 | */ | |
1356 | ||
1357 | #define UID_HASH (16) | |
1358 | ||
1359 | /* | |
1360 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1361 | * following to be declared. | |
1362 | */ | |
1363 | ||
1364 | /**************************************************************************** | |
1365 | * Locking notes. All updates to global variables and lists should be | |
1366 | * protected by spinlocks or semaphores. | |
1367 | * | |
1368 | * Spinlocks | |
1369 | * --------- | |
1370 | * GlobalMid_Lock protects: | |
1371 | * list operations on pending_mid_q and oplockQ | |
1372 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 1373 | * cifs_file_list_lock protects: |
1da177e4 LT |
1374 | * list operations on tcp and SMB session lists and tCon lists |
1375 | * f_owner.lock protects certain per file struct operations | |
1376 | * mapping->page_lock protects certain per page operations | |
1377 | * | |
1378 | * Semaphores | |
1379 | * ---------- | |
1380 | * sesSem operations on smb session | |
1381 | * tconSem operations on tree connection | |
d38d8c74 | 1382 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1383 | * |
1384 | ****************************************************************************/ | |
1385 | ||
1386 | #ifdef DECLARE_GLOBALS_HERE | |
1387 | #define GLOBAL_EXTERN | |
1388 | #else | |
1389 | #define GLOBAL_EXTERN extern | |
1390 | #endif | |
1391 | ||
e7ddee90 JL |
1392 | /* |
1393 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1394 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1395 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1396 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1397 | * by iterating over cifs_tcp_ses_list |
1398 | */ | |
1399 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1400 | ||
f1987b44 JL |
1401 | /* |
1402 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1403 | * tcp session, and the list of tcon's per smb session. It also protects | |
1404 | * the reference counters for the server, smb session, and tcon. Finally, | |
1405 | * changes to the tcon->tidStatus should be done while holding this lock. | |
1406 | */ | |
3f9bcca7 | 1407 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
1408 | |
1409 | /* | |
1410 | * This lock protects the cifs_file->llist and cifs_file->flist | |
1411 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
1412 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
1413 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
1414 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
1415 | */ | |
4477288a | 1416 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 1417 | |
0eff0e26 | 1418 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1419 | /* Outstanding dir notify requests */ |
1420 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1421 | /* DirNotify response queue */ | |
1422 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1423 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1424 | |
1da177e4 LT |
1425 | /* |
1426 | * Global transaction id (XID) information | |
1427 | */ | |
1428 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1429 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1430 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1431 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1432 | /* on midQ entries */ | |
1da177e4 LT |
1433 | /* |
1434 | * Global counters, updated atomically | |
1435 | */ | |
1436 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1437 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1438 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1439 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1440 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1441 | ||
aaa9bbe0 | 1442 | /* Various Debug counters */ |
4498eed5 SF |
1443 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1444 | #ifdef CONFIG_CIFS_STATS2 | |
1445 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1446 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1447 | #endif | |
1448 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1449 | GLOBAL_EXTERN atomic_t midCount; |
1450 | ||
1451 | /* Misc globals */ | |
5e500ed1 | 1452 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1da177e4 | 1453 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 1454 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1455 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
1456 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1457 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1458 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1459 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1460 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1461 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1462 | ||
21fed0d5 | 1463 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1464 | GLOBAL_EXTERN struct rb_root uidtree; |
1465 | GLOBAL_EXTERN struct rb_root gidtree; | |
1466 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1467 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1468 | GLOBAL_EXTERN struct rb_root siduidtree; |
1469 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1470 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1471 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1472 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1473 | |
9b646972 | 1474 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1475 | |
3bc303c2 | 1476 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1477 | extern struct workqueue_struct *cifsiod_wq; |
abd2e44d | 1478 | |
2dc7e1c0 PS |
1479 | extern mempool_t *cifs_mid_poolp; |
1480 | ||
23db65f5 JL |
1481 | /* Operations for different SMB versions */ |
1482 | #define SMB1_VERSION_STRING "1.0" | |
1483 | extern struct smb_version_operations smb1_operations; | |
1484 | extern struct smb_version_values smb1_values; | |
1080ef75 SF |
1485 | #define SMB21_VERSION_STRING "2.1" |
1486 | extern struct smb_version_operations smb21_operations; | |
1487 | extern struct smb_version_values smb21_values; | |
abd2e44d | 1488 | #endif /* _CIFS_GLOB_H */ |