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