Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
7ee1af76 | 6 | * Jeremy Allison (jra@samba.org) |
1da177e4 LT |
7 | * |
8 | * This library is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as published | |
10 | * by the Free Software Foundation; either version 2.1 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | * the GNU Lesser General Public License for more details. | |
d38d8c74 | 17 | * |
1da177e4 | 18 | */ |
abd2e44d SJ |
19 | #ifndef _CIFS_GLOB_H |
20 | #define _CIFS_GLOB_H | |
21 | ||
1da177e4 LT |
22 | #include <linux/in.h> |
23 | #include <linux/in6.h> | |
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 */ | |
131 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ | |
132 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
133 | }; | |
134 | ||
d3686d54 | 135 | /* per smb session structure/fields */ |
d2b91521 SP |
136 | struct ntlmssp_auth { |
137 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ | |
138 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
139 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 140 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
141 | }; |
142 | ||
442aa310 SF |
143 | struct cifs_cred { |
144 | int uid; | |
145 | int gid; | |
146 | int mode; | |
147 | int cecount; | |
148 | struct cifs_sid osid; | |
149 | struct cifs_sid gsid; | |
150 | struct cifs_ntace *ntaces; | |
151 | struct cifs_ace *aces; | |
152 | }; | |
153 | ||
1da177e4 LT |
154 | /* |
155 | ***************************************************************** | |
156 | * Except the CIFS PDUs themselves all the | |
157 | * globally interesting structs should go here | |
158 | ***************************************************************** | |
159 | */ | |
160 | ||
23db65f5 JL |
161 | enum smb_version { |
162 | Smb_1 = 1, | |
1080ef75 | 163 | Smb_21, |
23db65f5 JL |
164 | }; |
165 | ||
121b046a JL |
166 | struct mid_q_entry; |
167 | struct TCP_Server_Info; | |
55157dfb | 168 | struct cifsFileInfo; |
082d0642 | 169 | struct cifs_ses; |
2e6e02ab | 170 | struct cifs_tcon; |
b669f33c | 171 | struct dfs_info3_param; |
1208ef1f | 172 | struct cifs_fattr; |
9224dfc2 | 173 | struct smb_vol; |
fb1214e4 | 174 | struct cifs_fid; |
fc9c5966 | 175 | struct cifs_readdata; |
c9de5c80 | 176 | struct cifs_writedata; |
121b046a | 177 | |
23db65f5 | 178 | struct smb_version_operations { |
121b046a JL |
179 | int (*send_cancel)(struct TCP_Server_Info *, void *, |
180 | struct mid_q_entry *); | |
55157dfb | 181 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 PS |
182 | /* setup request: allocate mid, sign message */ |
183 | int (*setup_request)(struct cifs_ses *, struct kvec *, unsigned int, | |
184 | struct mid_q_entry **); | |
45740847 PS |
185 | /* setup async request: allocate mid, sign message */ |
186 | int (*setup_async_request)(struct TCP_Server_Info *, struct kvec *, | |
187 | unsigned int, struct mid_q_entry **); | |
082d0642 PS |
188 | /* check response: verify signature, map error */ |
189 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
190 | bool); | |
a891f0f8 PS |
191 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
192 | const int); | |
45275789 | 193 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
194 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
195 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 196 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
eb378711 PS |
197 | /* data offset from read response message */ |
198 | unsigned int (*read_data_offset)(char *); | |
199 | /* data length from read response message */ | |
200 | unsigned int (*read_data_length)(char *); | |
201 | /* map smb to linux error */ | |
202 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
203 | /* find mid corresponding to the response message */ |
204 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
205 | void (*dump_detail)(void *); | |
44c58186 PS |
206 | void (*clear_stats)(struct cifs_tcon *); |
207 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
8aa26f3e PS |
208 | /* verify the message */ |
209 | int (*check_message)(char *, unsigned int); | |
210 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); | |
316cf94a PS |
211 | /* process transaction2 response */ |
212 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
213 | char *, int); | |
286170aa PS |
214 | /* check if we need to negotiate */ |
215 | bool (*need_neg)(struct TCP_Server_Info *); | |
216 | /* negotiate to the server */ | |
217 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
218 | /* set negotiated write size */ |
219 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
220 | /* set negotiated read size */ | |
221 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
222 | /* setup smb sessionn */ |
223 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
224 | const struct nls_table *); | |
225 | /* close smb session */ | |
226 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
227 | /* connect to a server share */ |
228 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
229 | struct cifs_tcon *, const struct nls_table *); | |
230 | /* close tree connecion */ | |
231 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
232 | /* get DFS referrals */ |
233 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
234 | const char *, struct dfs_info3_param **, | |
235 | unsigned int *, const struct nls_table *, int); | |
af4281dc PS |
236 | /* informational QFS call */ |
237 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); | |
68889f26 PS |
238 | /* check if a path is accessible or not */ |
239 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
240 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
241 | /* query path data from the server */ |
242 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
243 | struct cifs_sb_info *, const char *, | |
244 | FILE_ALL_INFO *, bool *); | |
4ad65044 PS |
245 | /* query file data from the server */ |
246 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
247 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
248 | /* get server index number */ |
249 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
250 | struct cifs_sb_info *, const char *, | |
251 | u64 *uniqueid, FILE_ALL_INFO *); | |
9224dfc2 PS |
252 | /* build a full path to the root of the mount */ |
253 | char * (*build_path_to_root)(struct smb_vol *, struct cifs_sb_info *, | |
254 | struct cifs_tcon *); | |
f6d76178 PS |
255 | /* check if we can send an echo or nor */ |
256 | bool (*can_echo)(struct TCP_Server_Info *); | |
257 | /* send echo request */ | |
258 | int (*echo)(struct TCP_Server_Info *); | |
f436720e PS |
259 | /* create directory */ |
260 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, | |
261 | struct cifs_sb_info *); | |
262 | /* set info on created directory */ | |
263 | void (*mkdir_setinfo)(struct inode *, const char *, | |
264 | struct cifs_sb_info *, struct cifs_tcon *, | |
265 | const unsigned int); | |
f958ca5d PS |
266 | /* remove directory */ |
267 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
268 | struct cifs_sb_info *); | |
ed6875e0 PS |
269 | /* unlink file */ |
270 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
271 | struct cifs_sb_info *); | |
272 | /* open, rename and delete file */ | |
273 | int (*rename_pending_delete)(const char *, struct dentry *, | |
274 | const unsigned int); | |
fb1214e4 PS |
275 | /* open a file for non-posix mounts */ |
276 | int (*open)(const unsigned int, struct cifs_tcon *, const char *, int, | |
277 | int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *, | |
278 | struct cifs_sb_info *); | |
279 | /* set fid protocol-specific info */ | |
280 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 PS |
281 | /* close a file */ |
282 | int (*close)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
1d8c4c00 PS |
283 | /* send a flush request to the server */ |
284 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
285 | /* async read from the server */ |
286 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 PS |
287 | /* async write to the server */ |
288 | int (*async_writev)(struct cifs_writedata *); | |
23db65f5 JL |
289 | }; |
290 | ||
291 | struct smb_version_values { | |
292 | char *version_string; | |
106dc538 PS |
293 | __u32 large_lock_type; |
294 | __u32 exclusive_lock_type; | |
295 | __u32 shared_lock_type; | |
296 | __u32 unlock_lock_type; | |
1887f601 PS |
297 | size_t header_size; |
298 | size_t max_header_size; | |
eb378711 | 299 | size_t read_rsp_size; |
2dc7e1c0 | 300 | __le16 lock_cmd; |
29e20f9c PS |
301 | unsigned int cap_unix; |
302 | unsigned int cap_nt_find; | |
303 | unsigned int cap_large_files; | |
23db65f5 JL |
304 | }; |
305 | ||
1887f601 PS |
306 | #define HEADER_SIZE(server) (server->vals->header_size) |
307 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
308 | ||
f87d39d9 SF |
309 | struct smb_vol { |
310 | char *username; | |
311 | char *password; | |
312 | char *domainname; | |
313 | char *UNC; | |
314 | char *UNCip; | |
315 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
316 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
317 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
318 | uid_t cred_uid; | |
319 | uid_t linux_uid; | |
320 | gid_t linux_gid; | |
3d3ea8e6 SP |
321 | uid_t backupuid; |
322 | gid_t backupgid; | |
5206efd6 AV |
323 | umode_t file_mode; |
324 | umode_t dir_mode; | |
f87d39d9 SF |
325 | unsigned secFlg; |
326 | bool retry:1; | |
327 | bool intr:1; | |
328 | bool setuids:1; | |
329 | bool override_uid:1; | |
330 | bool override_gid:1; | |
331 | bool dynperm:1; | |
332 | bool noperm:1; | |
333 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
334 | bool cifs_acl:1; | |
3d3ea8e6 SP |
335 | bool backupuid_specified; /* mount option backupuid is specified */ |
336 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
337 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
338 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
339 | bool direct_io:1; | |
340 | bool strict_io:1; /* strict cache behavior */ | |
341 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
342 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
343 | bool no_linux_ext:1; | |
344 | bool sfu_emul:1; | |
345 | bool nullauth:1; /* attempt to authenticate with null user */ | |
346 | bool nocase:1; /* request case insensitive filenames */ | |
347 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
348 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
349 | bool seal:1; /* request transport encryption on share */ | |
350 | bool nodfs:1; /* Do not request DFS, even if available */ | |
351 | bool local_lease:1; /* check leases only on local system, not remote */ | |
352 | bool noblocksnd:1; | |
353 | bool noautotune:1; | |
354 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
355 | bool fsc:1; /* enable fscache */ | |
356 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
357 | bool multiuser:1; | |
d4ffff1f | 358 | bool rwpidforward:1; /* pid forward for read/write operations */ |
f87d39d9 SF |
359 | unsigned int rsize; |
360 | unsigned int wsize; | |
361 | bool sockopt_tcp_nodelay:1; | |
362 | unsigned short int port; | |
363 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ | |
23db65f5 JL |
364 | struct smb_version_operations *ops; |
365 | struct smb_version_values *vals; | |
f87d39d9 SF |
366 | char *prepath; |
367 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ | |
368 | struct nls_table *local_nls; | |
369 | }; | |
370 | ||
25c7f41e PS |
371 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
372 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
373 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
374 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ | |
375 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
376 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
377 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
378 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
379 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
380 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
381 | |
382 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
383 | MS_NODEV | MS_SYNCHRONOUS) | |
384 | ||
385 | struct cifs_mnt_data { | |
386 | struct cifs_sb_info *cifs_sb; | |
387 | struct smb_vol *vol; | |
388 | int flags; | |
389 | }; | |
390 | ||
792af7b0 PS |
391 | static inline unsigned int |
392 | get_rfc1002_length(void *buf) | |
393 | { | |
394 | return be32_to_cpu(*((__be32 *)buf)); | |
395 | } | |
396 | ||
ec2e4523 PS |
397 | static inline void |
398 | inc_rfc1001_len(void *buf, int count) | |
399 | { | |
400 | be32_add_cpu((__be32 *)buf, count); | |
401 | } | |
402 | ||
1da177e4 | 403 | struct TCP_Server_Info { |
3b795210 SF |
404 | struct list_head tcp_ses_list; |
405 | struct list_head smb_ses_list; | |
e7ddee90 | 406 | int srv_count; /* reference counter */ |
a10faeb2 | 407 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 408 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
409 | struct smb_version_operations *ops; |
410 | struct smb_version_values *vals; | |
c3dccf48 | 411 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 412 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 413 | struct socket *ssocket; |
a9f1b85e | 414 | struct sockaddr_storage dstaddr; |
3eb9a889 | 415 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
416 | #ifdef CONFIG_NET_NS |
417 | struct net *net; | |
418 | #endif | |
d38d8c74 | 419 | wait_queue_head_t response_q; |
1da177e4 LT |
420 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
421 | struct list_head pending_mid_q; | |
edf1ae40 SF |
422 | bool noblocksnd; /* use blocking sendmsg */ |
423 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 424 | bool tcp_nodelay; |
2d86dbc9 | 425 | int credits; /* send no more requests at once */ |
fc40f9cf | 426 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 427 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 428 | struct mutex srv_mutex; |
1da177e4 LT |
429 | struct task_struct *tsk; |
430 | char server_GUID[16]; | |
286170aa | 431 | __u16 sec_mode; |
c3dccf48 | 432 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
433 | #ifdef CONFIG_CIFS_SMB2 |
434 | int echo_credits; /* echo reserved slots */ | |
435 | int oplock_credits; /* oplock break reserved slots */ | |
436 | bool echoes:1; /* enable echoes */ | |
437 | #endif | |
c3dccf48 | 438 | u16 dialect; /* dialect index that server chose */ |
1da177e4 | 439 | enum securityEnum secType; |
10b9b98e | 440 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
441 | unsigned int maxReq; /* Clients should submit no more */ |
442 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
443 | /* multiplexed reads or writes */ | |
444 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
445 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
446 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
447 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 448 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
449 | /* message size the server can send or receive for */ |
450 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
451 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
452 | those that can be specified uniquely with | |
453 | vcnumbers */ | |
29e20f9c | 454 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 455 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 456 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 457 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 458 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 459 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 460 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 461 | struct session_key session_key; |
3a5ff61c | 462 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 463 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
26efa0ba | 464 | /* extended security flavors that server supports */ |
c3dccf48 JL |
465 | bool sec_ntlmssp; /* supports NTLMSSP */ |
466 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
467 | bool sec_kerberos; /* supports plain Kerberos */ |
468 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 469 | bool large_buf; /* is current buffer large? */ |
c74093b6 | 470 | struct delayed_work echo; /* echo ping workqueue job */ |
1041e3f9 JL |
471 | struct kvec *iov; /* reusable kvec array for receives */ |
472 | unsigned int nr_iov; /* number of kvecs in array */ | |
2a37ef94 JL |
473 | char *smallbuf; /* pointer to current "small" buffer */ |
474 | char *bigbuf; /* pointer to current "big" buffer */ | |
475 | unsigned int total_read; /* total amount of data read in this pass */ | |
488f1d2d SJ |
476 | #ifdef CONFIG_CIFS_FSCACHE |
477 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
478 | #endif | |
c3dccf48 | 479 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 480 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
481 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
482 | #endif | |
ec2e4523 PS |
483 | #ifdef CONFIG_CIFS_SMB2 |
484 | unsigned int max_read; | |
485 | unsigned int max_write; | |
486 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 LT |
487 | }; |
488 | ||
fc40f9cf PS |
489 | static inline unsigned int |
490 | in_flight(struct TCP_Server_Info *server) | |
491 | { | |
492 | unsigned int num; | |
493 | spin_lock(&server->req_lock); | |
494 | num = server->in_flight; | |
495 | spin_unlock(&server->req_lock); | |
496 | return num; | |
497 | } | |
498 | ||
2d86dbc9 | 499 | static inline bool |
bc205ed1 | 500 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 501 | { |
2d86dbc9 | 502 | int num; |
fc40f9cf | 503 | spin_lock(&server->req_lock); |
bc205ed1 | 504 | num = *credits; |
fc40f9cf | 505 | spin_unlock(&server->req_lock); |
2d86dbc9 | 506 | return num > 0; |
fc40f9cf PS |
507 | } |
508 | ||
45275789 | 509 | static inline void |
a891f0f8 PS |
510 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
511 | const int optype) | |
45275789 | 512 | { |
a891f0f8 | 513 | server->ops->add_credits(server, add, optype); |
45275789 PS |
514 | } |
515 | ||
516 | static inline void | |
517 | set_credits(struct TCP_Server_Info *server, const int val) | |
518 | { | |
519 | server->ops->set_credits(server, val); | |
520 | } | |
521 | ||
88257360 PS |
522 | static inline __u64 |
523 | get_next_mid(struct TCP_Server_Info *server) | |
524 | { | |
525 | return server->ops->get_next_mid(server); | |
526 | } | |
527 | ||
24985c53 PS |
528 | /* |
529 | * When the server supports very large reads and writes via POSIX extensions, | |
530 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
531 | * including the RFC1001 length. | |
532 | * | |
533 | * Note that this might make for "interesting" allocation problems during | |
534 | * writeback however as we have to allocate an array of pointers for the | |
535 | * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. | |
536 | * | |
537 | * For reads, there is a similar problem as we need to allocate an array | |
538 | * of kvecs to handle the receive, though that should only need to be done | |
539 | * once. | |
540 | */ | |
541 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
542 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
543 | ||
544 | /* | |
545 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
546 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
547 | * write up to the maximum size described by RFC1002. | |
548 | */ | |
549 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
550 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
551 | ||
552 | /* | |
553 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
554 | * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill | |
555 | * a single wsize request with a single call. | |
556 | */ | |
557 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
558 | ||
559 | /* | |
560 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
561 | * those values when posix extensions aren't in force. In actuality here, we | |
562 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
563 | * to be ok with the extra byte even though Windows doesn't send writes that | |
564 | * are that large. | |
565 | * | |
566 | * Citation: | |
567 | * | |
568 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
569 | */ | |
570 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
571 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
572 | ||
573 | /* | |
574 | * On hosts with high memory, we can't currently support wsize/rsize that are | |
575 | * larger than we can kmap at once. Cap the rsize/wsize at | |
576 | * LAST_PKMAP * PAGE_SIZE. We'll never be able to fill a read or write request | |
577 | * larger than that anyway. | |
578 | */ | |
579 | #ifdef CONFIG_HIGHMEM | |
580 | #define CIFS_KMAP_SIZE_LIMIT (LAST_PKMAP * PAGE_CACHE_SIZE) | |
581 | #else /* CONFIG_HIGHMEM */ | |
582 | #define CIFS_KMAP_SIZE_LIMIT (1<<24) | |
583 | #endif /* CONFIG_HIGHMEM */ | |
584 | ||
33319141 PS |
585 | #ifdef CONFIG_HIGHMEM |
586 | /* | |
587 | * On arches that have high memory, kmap address space is limited. By | |
588 | * serializing the kmap operations on those arches, we ensure that we don't | |
589 | * end up with a bunch of threads in writeback with partially mapped page | |
590 | * arrays, stuck waiting for kmap to come back. That situation prevents | |
591 | * progress and can deadlock. | |
592 | */ | |
593 | ||
594 | extern struct mutex cifs_kmap_mutex; | |
595 | ||
596 | static inline void | |
597 | cifs_kmap_lock(void) | |
598 | { | |
599 | mutex_lock(&cifs_kmap_mutex); | |
600 | } | |
601 | ||
602 | static inline void | |
603 | cifs_kmap_unlock(void) | |
604 | { | |
605 | mutex_unlock(&cifs_kmap_mutex); | |
606 | } | |
607 | #else /* !CONFIG_HIGHMEM */ | |
608 | #define cifs_kmap_lock() do { ; } while (0) | |
609 | #define cifs_kmap_unlock() do { ; } while (0) | |
610 | #endif /* CONFIG_HIGHMEM */ | |
611 | ||
f1d0c998 RL |
612 | /* |
613 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
614 | * when CONFIG_NET_NS isn't set. | |
615 | */ | |
616 | ||
617 | #ifdef CONFIG_NET_NS | |
618 | ||
619 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
620 | { | |
621 | return srv->net; | |
622 | } | |
623 | ||
624 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
625 | { | |
626 | srv->net = net; | |
627 | } | |
628 | ||
629 | #else | |
630 | ||
631 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
632 | { | |
633 | return &init_net; | |
634 | } | |
635 | ||
636 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
637 | { | |
638 | } | |
639 | ||
640 | #endif | |
641 | ||
1da177e4 LT |
642 | /* |
643 | * Session structure. One of these for each uid session with a particular host | |
644 | */ | |
96daf2b0 | 645 | struct cifs_ses { |
14fbf50d | 646 | struct list_head smb_ses_list; |
3b795210 | 647 | struct list_head tcon_list; |
d7b619cf | 648 | struct mutex session_mutex; |
1da177e4 | 649 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 650 | int ses_count; /* reference counter */ |
1da177e4 | 651 | enum statusEnum status; |
750d1151 | 652 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
653 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
654 | __u16 flags; | |
eca6acf9 | 655 | __u16 vcnum; |
ad009ac9 SF |
656 | char *serverOS; /* name of operating system underlying server */ |
657 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 658 | char *serverDomain; /* security realm of server */ |
286170aa | 659 | __u64 Suid; /* remote smb uid */ |
3e4b3e1f JL |
660 | uid_t linux_uid; /* overriding owner of files on the mount */ |
661 | uid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 662 | unsigned int capabilities; |
d38d8c74 | 663 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 664 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
665 | char *user_name; /* must not be null except during init of sess |
666 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
667 | char *domainName; |
668 | char *password; | |
5d0d2882 | 669 | struct session_key auth_key; |
d3686d54 | 670 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
3b795210 | 671 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
5478f9ba PS |
672 | #ifdef CONFIG_CIFS_SMB2 |
673 | __u16 session_flags; | |
674 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 | 675 | }; |
9ac00b7d | 676 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 677 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
678 | #define CIFS_SES_OS2 2 |
679 | #define CIFS_SES_W9X 4 | |
680 | /* following flag is set for old servers such as OS2 (and Win95?) | |
681 | which do not negotiate NTLM or POSIX dialects, but instead | |
682 | negotiate one of the older LANMAN dialects */ | |
683 | #define CIFS_SES_LANMAN 8 | |
29e20f9c PS |
684 | |
685 | static inline bool | |
686 | cap_unix(struct cifs_ses *ses) | |
687 | { | |
688 | return ses->server->vals->cap_unix & ses->capabilities; | |
689 | } | |
690 | ||
1da177e4 LT |
691 | /* |
692 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 693 | * session |
1da177e4 | 694 | */ |
96daf2b0 | 695 | struct cifs_tcon { |
f1987b44 JL |
696 | struct list_head tcon_list; |
697 | int tc_count; | |
1da177e4 | 698 | struct list_head openFileList; |
96daf2b0 | 699 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 700 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 701 | char *nativeFileSystem; |
00e485b0 | 702 | char *password; /* for share-level security */ |
faaf946a | 703 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
704 | __u16 Flags; /* optional support bits */ |
705 | enum statusEnum tidStatus; | |
1da177e4 LT |
706 | #ifdef CONFIG_CIFS_STATS |
707 | atomic_t num_smbs_sent; | |
44c58186 PS |
708 | union { |
709 | struct { | |
710 | atomic_t num_writes; | |
711 | atomic_t num_reads; | |
712 | atomic_t num_flushes; | |
713 | atomic_t num_oplock_brks; | |
714 | atomic_t num_opens; | |
715 | atomic_t num_closes; | |
716 | atomic_t num_deletes; | |
717 | atomic_t num_mkdirs; | |
718 | atomic_t num_posixopens; | |
719 | atomic_t num_posixmkdirs; | |
720 | atomic_t num_rmdirs; | |
721 | atomic_t num_renames; | |
722 | atomic_t num_t2renames; | |
723 | atomic_t num_ffirst; | |
724 | atomic_t num_fnext; | |
725 | atomic_t num_fclose; | |
726 | atomic_t num_hardlinks; | |
727 | atomic_t num_symlinks; | |
728 | atomic_t num_locks; | |
729 | atomic_t num_acl_get; | |
730 | atomic_t num_acl_set; | |
731 | } cifs_stats; | |
d60622eb PS |
732 | #ifdef CONFIG_CIFS_SMB2 |
733 | struct { | |
734 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
735 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
736 | } smb2_stats; | |
737 | #endif /* CONFIG_CIFS_SMB2 */ | |
44c58186 | 738 | } stats; |
a5a2b489 SF |
739 | #ifdef CONFIG_CIFS_STATS2 |
740 | unsigned long long time_writes; | |
741 | unsigned long long time_reads; | |
742 | unsigned long long time_opens; | |
743 | unsigned long long time_deletes; | |
744 | unsigned long long time_closes; | |
745 | unsigned long long time_mkdirs; | |
746 | unsigned long long time_rmdirs; | |
747 | unsigned long long time_renames; | |
748 | unsigned long long time_t2renames; | |
749 | unsigned long long time_ffirst; | |
750 | unsigned long long time_fnext; | |
751 | unsigned long long time_fclose; | |
752 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
753 | __u64 bytes_read; |
754 | __u64 bytes_written; | |
755 | spinlock_t stat_lock; | |
a5a2b489 | 756 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 757 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 758 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 759 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
760 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
761 | bool retry:1; | |
762 | bool nocase:1; | |
95b1cb90 | 763 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 764 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 765 | for this mount even if server would support */ |
84210e91 | 766 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 767 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 768 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
faaf946a PS |
769 | #ifdef CONFIG_CIFS_SMB2 |
770 | bool print:1; /* set if connection to printer share */ | |
771 | bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ | |
772 | __u32 capabilities; | |
773 | __u32 share_flags; | |
774 | __u32 maximal_access; | |
775 | __u32 vol_serial_number; | |
776 | __le64 vol_create_time; | |
777 | #endif /* CONFIG_CIFS_SMB2 */ | |
d03382ce SJ |
778 | #ifdef CONFIG_CIFS_FSCACHE |
779 | u64 resource_id; /* server resource id */ | |
780 | struct fscache_cookie *fscache; /* cookie for share */ | |
781 | #endif | |
c18c842b | 782 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
783 | }; |
784 | ||
7ffec372 JL |
785 | /* |
786 | * This is a refcounted and timestamped container for a tcon pointer. The | |
787 | * container holds a tcon reference. It is considered safe to free one of | |
788 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
789 | * "get" on the container. | |
790 | */ | |
791 | struct tcon_link { | |
b647c35f JL |
792 | struct rb_node tl_rbnode; |
793 | uid_t tl_uid; | |
9d002df4 JL |
794 | unsigned long tl_flags; |
795 | #define TCON_LINK_MASTER 0 | |
796 | #define TCON_LINK_PENDING 1 | |
797 | #define TCON_LINK_IN_TREE 2 | |
798 | unsigned long tl_time; | |
799 | atomic_t tl_count; | |
96daf2b0 | 800 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
801 | }; |
802 | ||
9d002df4 | 803 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 804 | |
96daf2b0 | 805 | static inline struct cifs_tcon * |
7ffec372 JL |
806 | tlink_tcon(struct tcon_link *tlink) |
807 | { | |
9d002df4 | 808 | return tlink->tl_tcon; |
7ffec372 JL |
809 | } |
810 | ||
9d002df4 | 811 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 812 | |
13cfb733 JL |
813 | static inline struct tcon_link * |
814 | cifs_get_tlink(struct tcon_link *tlink) | |
815 | { | |
9d002df4 JL |
816 | if (tlink && !IS_ERR(tlink)) |
817 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
818 | return tlink; |
819 | } | |
820 | ||
7ffec372 | 821 | /* This function is always expected to succeed */ |
96daf2b0 | 822 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 823 | |
1da177e4 | 824 | /* |
7ee1af76 JA |
825 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
826 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
827 | */ |
828 | struct cifsLockInfo { | |
7ee1af76 | 829 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
830 | struct list_head blist; /* pointer to locks blocked on this */ |
831 | wait_queue_head_t block_q; | |
7ee1af76 JA |
832 | __u64 offset; |
833 | __u64 length; | |
03776f45 | 834 | __u32 pid; |
04a6aa8a | 835 | __u32 type; |
1da177e4 LT |
836 | }; |
837 | ||
838 | /* | |
839 | * One of these for each open instance of a file | |
840 | */ | |
841 | struct cifs_search_info { | |
842 | loff_t index_of_last_entry; | |
843 | __u16 entries_in_buffer; | |
844 | __u16 info_level; | |
845 | __u32 resume_key; | |
d38d8c74 SF |
846 | char *ntwrk_buf_start; |
847 | char *srch_entries_start; | |
0752f152 | 848 | char *last_entry; |
eaf35b1e | 849 | const char *presume_name; |
1da177e4 | 850 | unsigned int resume_name_len; |
4b18f2a9 SF |
851 | bool endOfSearch:1; |
852 | bool emptyDir:1; | |
853 | bool unicode:1; | |
854 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
855 | }; |
856 | ||
4b4de76e PS |
857 | struct cifs_fid { |
858 | __u16 netfid; | |
f0df737e PS |
859 | #ifdef CONFIG_CIFS_SMB2 |
860 | __u64 persistent_fid; /* persist file id for smb2 */ | |
861 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
862 | #endif | |
4b4de76e PS |
863 | }; |
864 | ||
1da177e4 LT |
865 | struct cifsFileInfo { |
866 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
867 | struct list_head flist; /* next fid (file instance) for this inode */ | |
fbd35aca PS |
868 | struct list_head llist; /* |
869 | * brlocks held by this fid, protected by | |
870 | * lock_mutex from cifsInodeInfo structure | |
871 | */ | |
1da177e4 LT |
872 | unsigned int uid; /* allows finding which FileInfo structure */ |
873 | __u32 pid; /* process id who opened file */ | |
4b4de76e | 874 | struct cifs_fid fid; /* file id from remote */ |
1da177e4 LT |
875 | /* BB add lock scope info here if needed */ ; |
876 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 877 | struct dentry *dentry; |
15886177 | 878 | unsigned int f_flags; |
13cfb733 | 879 | struct tcon_link *tlink; |
4b18f2a9 | 880 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 881 | bool oplock_break_cancelled:1; |
6c0f6218 | 882 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 883 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 884 | struct cifs_search_info srch_inf; |
9b646972 | 885 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
886 | }; |
887 | ||
fa2989f4 PS |
888 | struct cifs_io_parms { |
889 | __u16 netfid; | |
09a4707e PS |
890 | #ifdef CONFIG_CIFS_SMB2 |
891 | __u64 persistent_fid; /* persist file id for smb2 */ | |
892 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
893 | #endif | |
fa2989f4 PS |
894 | __u32 pid; |
895 | __u64 offset; | |
896 | unsigned int length; | |
96daf2b0 | 897 | struct cifs_tcon *tcon; |
fa2989f4 PS |
898 | }; |
899 | ||
09a4707e PS |
900 | struct cifs_readdata; |
901 | ||
902 | /* asynchronous read support */ | |
903 | struct cifs_readdata { | |
904 | struct kref refcount; | |
905 | struct list_head list; | |
906 | struct completion done; | |
907 | struct cifsFileInfo *cfile; | |
908 | struct address_space *mapping; | |
909 | __u64 offset; | |
910 | unsigned int bytes; | |
911 | pid_t pid; | |
912 | int result; | |
913 | struct list_head pages; | |
914 | struct work_struct work; | |
915 | int (*marshal_iov) (struct cifs_readdata *rdata, | |
916 | unsigned int remaining); | |
917 | unsigned int nr_iov; | |
918 | struct kvec iov[1]; | |
919 | }; | |
920 | ||
33319141 PS |
921 | struct cifs_writedata; |
922 | ||
923 | /* asynchronous write support */ | |
924 | struct cifs_writedata { | |
925 | struct kref refcount; | |
926 | struct list_head list; | |
927 | struct completion done; | |
928 | enum writeback_sync_modes sync_mode; | |
929 | struct work_struct work; | |
930 | struct cifsFileInfo *cfile; | |
931 | __u64 offset; | |
932 | pid_t pid; | |
933 | unsigned int bytes; | |
934 | int result; | |
935 | void (*marshal_iov) (struct kvec *iov, | |
936 | struct cifs_writedata *wdata); | |
937 | unsigned int nr_pages; | |
938 | struct page *pages[1]; | |
939 | }; | |
940 | ||
5f6dbc9e JL |
941 | /* |
942 | * Take a reference on the file private data. Must be called with | |
943 | * cifs_file_list_lock held. | |
944 | */ | |
764a1b1a JL |
945 | static inline void |
946 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 947 | { |
5f6dbc9e | 948 | ++cifs_file->count; |
6ab409b5 DK |
949 | } |
950 | ||
764a1b1a | 951 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
b33879aa | 952 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 953 | |
1da177e4 LT |
954 | /* |
955 | * One of these for each file inode | |
956 | */ | |
957 | ||
958 | struct cifsInodeInfo { | |
d59dad2b | 959 | bool can_cache_brlcks; |
fbd35aca PS |
960 | struct mutex lock_mutex; /* |
961 | * protect the field above and llist | |
962 | * from every cifsFileInfo structure | |
963 | * from openFileList | |
964 | */ | |
d38d8c74 | 965 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 966 | struct list_head openFileList; |
1da177e4 | 967 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
aae62fdb JL |
968 | bool clientCanCacheRead; /* read oplock */ |
969 | bool clientCanCacheAll; /* read and writebehind oplock */ | |
970 | bool delete_pending; /* DELETE_ON_CLOSE is set */ | |
971 | bool invalid_mapping; /* pagecache is invalid */ | |
972 | unsigned long time; /* jiffies of last update of inode */ | |
597b027f | 973 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 974 | u64 uniqueid; /* server inode number */ |
20054bd6 | 975 | u64 createtime; /* creation time on server */ |
9451a9a5 SJ |
976 | #ifdef CONFIG_CIFS_FSCACHE |
977 | struct fscache_cookie *fscache; | |
978 | #endif | |
1da177e4 LT |
979 | struct inode vfs_inode; |
980 | }; | |
981 | ||
982 | static inline struct cifsInodeInfo * | |
983 | CIFS_I(struct inode *inode) | |
984 | { | |
985 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
986 | } | |
987 | ||
988 | static inline struct cifs_sb_info * | |
989 | CIFS_SB(struct super_block *sb) | |
990 | { | |
991 | return sb->s_fs_info; | |
992 | } | |
993 | ||
ab2f218f | 994 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
995 | { |
996 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
997 | return '/'; | |
998 | else | |
999 | return '\\'; | |
1000 | } | |
1da177e4 | 1001 | |
f87d39d9 SF |
1002 | static inline void |
1003 | convert_delimiter(char *path, char delim) | |
1004 | { | |
1005 | int i; | |
1006 | char old_delim; | |
1007 | ||
1008 | if (path == NULL) | |
1009 | return; | |
1010 | ||
1011 | if (delim == '/') | |
1012 | old_delim = '\\'; | |
1013 | else | |
1014 | old_delim = '/'; | |
1015 | ||
1016 | for (i = 0; path[i] != '\0'; i++) { | |
1017 | if (path[i] == old_delim) | |
1018 | path[i] = delim; | |
1019 | } | |
1020 | } | |
1021 | ||
9224dfc2 PS |
1022 | static inline char * |
1023 | build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, | |
1024 | struct cifs_tcon *tcon) | |
1025 | { | |
1026 | if (!vol->ops->build_path_to_root) | |
1027 | return NULL; | |
1028 | return vol->ops->build_path_to_root(vol, cifs_sb, tcon); | |
1029 | } | |
1030 | ||
a4544347 SF |
1031 | #ifdef CONFIG_CIFS_STATS |
1032 | #define cifs_stats_inc atomic_inc | |
1033 | ||
96daf2b0 | 1034 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1035 | unsigned int bytes) |
1036 | { | |
1037 | if (bytes) { | |
1038 | spin_lock(&tcon->stat_lock); | |
1039 | tcon->bytes_written += bytes; | |
1040 | spin_unlock(&tcon->stat_lock); | |
1041 | } | |
1042 | } | |
1043 | ||
96daf2b0 | 1044 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1045 | unsigned int bytes) |
1046 | { | |
1047 | spin_lock(&tcon->stat_lock); | |
1048 | tcon->bytes_read += bytes; | |
1049 | spin_unlock(&tcon->stat_lock); | |
1050 | } | |
1051 | #else | |
1052 | ||
d38d8c74 SF |
1053 | #define cifs_stats_inc(field) do {} while (0) |
1054 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
1055 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
1056 | |
1057 | #endif | |
1058 | ||
2b84a36c JL |
1059 | |
1060 | /* | |
44d22d84 JL |
1061 | * This is the prototype for the mid receive function. This function is for |
1062 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1063 | * just after the MID in struct smb_hdr). Note: | |
1064 | * | |
1065 | * - This will be called by cifsd, with no locks held. | |
1066 | * - The mid will still be on the pending_mid_q. | |
1067 | * - mid->resp_buf will point to the current buffer. | |
1068 | * | |
1069 | * Returns zero on a successful receive, or an error. The receive state in | |
1070 | * the TCP_Server_Info will also be updated. | |
1071 | */ | |
1072 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1073 | struct mid_q_entry *mid); | |
1074 | ||
1075 | /* | |
1076 | * This is the prototype for the mid callback function. This is called once the | |
1077 | * mid has been received off of the socket. When creating one, take special | |
1078 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1079 | * |
3c1105df JL |
1080 | * - it will be called by cifsd, with no locks held |
1081 | * - the mid will be removed from any lists | |
2b84a36c JL |
1082 | */ |
1083 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1084 | ||
1da177e4 LT |
1085 | /* one of these for every pending CIFS request to the server */ |
1086 | struct mid_q_entry { | |
1087 | struct list_head qhead; /* mids waiting on reply from this server */ | |
2dc7e1c0 | 1088 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
1089 | __u64 mid; /* multiplex id */ |
1090 | __u32 pid; /* process id */ | |
1da177e4 | 1091 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1092 | unsigned long when_alloc; /* when mid was created */ |
1093 | #ifdef CONFIG_CIFS_STATS2 | |
1094 | unsigned long when_sent; /* time when smb send finished */ | |
1095 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1096 | #endif | |
44d22d84 | 1097 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c JL |
1098 | mid_callback_t *callback; /* call completion callback */ |
1099 | void *callback_data; /* general purpose pointer for callback */ | |
d4e4854f | 1100 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 PS |
1101 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
1102 | __le16 command; /* smb command code */ | |
1103 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
1104 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1105 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
1106 | }; |
1107 | ||
789e6661 SF |
1108 | /* Make code in transport.c a little cleaner by moving |
1109 | update of optional stats into function below */ | |
1110 | #ifdef CONFIG_CIFS_STATS2 | |
1111 | ||
1112 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1113 | { | |
1114 | atomic_inc(&server->in_send); | |
1115 | } | |
1116 | ||
1117 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1118 | { | |
1119 | atomic_dec(&server->in_send); | |
1120 | } | |
1121 | ||
1122 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1123 | { | |
1124 | atomic_inc(&server->num_waiters); | |
1125 | } | |
1126 | ||
1127 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1128 | { | |
1129 | atomic_dec(&server->num_waiters); | |
1130 | } | |
1131 | ||
1132 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1133 | { | |
1134 | mid->when_sent = jiffies; | |
1135 | } | |
1136 | #else | |
1137 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1138 | { | |
1139 | } | |
1140 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1141 | { | |
1142 | } | |
1143 | ||
1144 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1145 | { | |
1146 | } | |
1147 | ||
1148 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1149 | { | |
1150 | } | |
1151 | ||
1152 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1153 | { | |
1154 | } | |
1155 | #endif | |
1da177e4 | 1156 | |
ff5dbd9e SF |
1157 | /* for pending dnotify requests */ |
1158 | struct dir_notify_req { | |
13cd4b7f SF |
1159 | struct list_head lhead; |
1160 | __le16 Pid; | |
1161 | __le16 PidHigh; | |
1162 | __u16 Mid; | |
1163 | __u16 Tid; | |
1164 | __u16 Uid; | |
1165 | __u16 netfid; | |
1166 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1167 | int multishot; | |
1168 | struct file *pfile; | |
ff5dbd9e SF |
1169 | }; |
1170 | ||
366781c1 SF |
1171 | struct dfs_info3_param { |
1172 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1173 | int path_consumed; |
366781c1 SF |
1174 | int server_type; |
1175 | int ref_flag; | |
1176 | char *path_name; | |
1177 | char *node_name; | |
1178 | }; | |
1179 | ||
cc0bad75 JL |
1180 | /* |
1181 | * common struct for holding inode info when searching for or updating an | |
1182 | * inode with new info | |
1183 | */ | |
1184 | ||
1185 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1186 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1187 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1188 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
1189 | |
1190 | struct cifs_fattr { | |
1191 | u32 cf_flags; | |
1192 | u32 cf_cifsattrs; | |
1193 | u64 cf_uniqueid; | |
1194 | u64 cf_eof; | |
1195 | u64 cf_bytes; | |
20054bd6 | 1196 | u64 cf_createtime; |
cc0bad75 JL |
1197 | uid_t cf_uid; |
1198 | gid_t cf_gid; | |
1199 | umode_t cf_mode; | |
1200 | dev_t cf_rdev; | |
1201 | unsigned int cf_nlink; | |
1202 | unsigned int cf_dtype; | |
1203 | struct timespec cf_atime; | |
1204 | struct timespec cf_mtime; | |
1205 | struct timespec cf_ctime; | |
1206 | }; | |
1207 | ||
366781c1 SF |
1208 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1209 | { | |
1210 | if (param) { | |
1211 | kfree(param->path_name); | |
1212 | kfree(param->node_name); | |
1213 | kfree(param); | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1218 | int number_of_items) | |
1219 | { | |
1220 | int i; | |
1221 | if ((number_of_items == 0) || (param == NULL)) | |
1222 | return; | |
1223 | for (i = 0; i < number_of_items; i++) { | |
1224 | kfree(param[i].path_name); | |
1225 | kfree(param[i].node_name); | |
1226 | } | |
1227 | kfree(param); | |
1228 | } | |
1229 | ||
1da177e4 LT |
1230 | #define MID_FREE 0 |
1231 | #define MID_REQUEST_ALLOCATED 1 | |
1232 | #define MID_REQUEST_SUBMITTED 2 | |
1233 | #define MID_RESPONSE_RECEIVED 4 | |
1234 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1235 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1236 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
1237 | |
1238 | /* Types of response buffer returned from SendReceive2 */ | |
1239 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1240 | #define CIFS_SMALL_BUFFER 1 | |
1241 | #define CIFS_LARGE_BUFFER 2 | |
1242 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1243 | |
133672ef | 1244 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1245 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1246 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1247 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1248 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1249 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1250 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1251 | ||
a891f0f8 PS |
1252 | /* Type of request operation */ |
1253 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1254 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1255 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1256 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
a891f0f8 | 1257 | |
3979877e SF |
1258 | /* Security Flags: indicate type of session setup needed */ |
1259 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1260 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1261 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1262 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1263 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1264 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1265 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1266 | #else |
1267 | #define CIFSSEC_MAY_LANMAN 0 | |
1268 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1269 | #endif /* weak passwords */ |
1270 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1271 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1272 | |
1273 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1274 | /* note that only one of the following can be set so the | |
1275 | result of setting MUST flags more than once will be to | |
1276 | require use of the stronger protocol */ | |
1277 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1278 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1279 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1280 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1281 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1282 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1283 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1284 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1285 | #else |
20d1752f | 1286 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1287 | #endif /* UPCALL */ |
0d3a01fa | 1288 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1289 | #define CIFSSEC_MUST_LANMAN 0 |
1290 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1291 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1292 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1293 | #else |
ac683924 | 1294 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1295 | #endif /* UPCALL */ |
3979877e SF |
1296 | #endif /* WEAK_PW_HASH */ |
1297 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1298 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1299 | |
ef571cad SP |
1300 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
1301 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 1302 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1303 | /* |
1304 | ***************************************************************** | |
1305 | * All constants go here | |
1306 | ***************************************************************** | |
1307 | */ | |
1308 | ||
1309 | #define UID_HASH (16) | |
1310 | ||
1311 | /* | |
1312 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1313 | * following to be declared. | |
1314 | */ | |
1315 | ||
1316 | /**************************************************************************** | |
1317 | * Locking notes. All updates to global variables and lists should be | |
1318 | * protected by spinlocks or semaphores. | |
1319 | * | |
1320 | * Spinlocks | |
1321 | * --------- | |
1322 | * GlobalMid_Lock protects: | |
1323 | * list operations on pending_mid_q and oplockQ | |
1324 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 1325 | * cifs_file_list_lock protects: |
1da177e4 LT |
1326 | * list operations on tcp and SMB session lists and tCon lists |
1327 | * f_owner.lock protects certain per file struct operations | |
1328 | * mapping->page_lock protects certain per page operations | |
1329 | * | |
1330 | * Semaphores | |
1331 | * ---------- | |
1332 | * sesSem operations on smb session | |
1333 | * tconSem operations on tree connection | |
d38d8c74 | 1334 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1335 | * |
1336 | ****************************************************************************/ | |
1337 | ||
1338 | #ifdef DECLARE_GLOBALS_HERE | |
1339 | #define GLOBAL_EXTERN | |
1340 | #else | |
1341 | #define GLOBAL_EXTERN extern | |
1342 | #endif | |
1343 | ||
e7ddee90 JL |
1344 | /* |
1345 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1346 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1347 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1348 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1349 | * by iterating over cifs_tcp_ses_list |
1350 | */ | |
1351 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1352 | ||
f1987b44 JL |
1353 | /* |
1354 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1355 | * tcp session, and the list of tcon's per smb session. It also protects | |
1356 | * the reference counters for the server, smb session, and tcon. Finally, | |
1357 | * changes to the tcon->tidStatus should be done while holding this lock. | |
1358 | */ | |
3f9bcca7 | 1359 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
1360 | |
1361 | /* | |
1362 | * This lock protects the cifs_file->llist and cifs_file->flist | |
1363 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
1364 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
1365 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
1366 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
1367 | */ | |
4477288a | 1368 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 1369 | |
0eff0e26 | 1370 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1371 | /* Outstanding dir notify requests */ |
1372 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1373 | /* DirNotify response queue */ | |
1374 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1375 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1376 | |
1da177e4 LT |
1377 | /* |
1378 | * Global transaction id (XID) information | |
1379 | */ | |
1380 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1381 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1382 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1383 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1384 | /* on midQ entries */ | |
1da177e4 LT |
1385 | /* |
1386 | * Global counters, updated atomically | |
1387 | */ | |
1388 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1389 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1390 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1391 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1392 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1393 | ||
aaa9bbe0 | 1394 | /* Various Debug counters */ |
4498eed5 SF |
1395 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1396 | #ifdef CONFIG_CIFS_STATS2 | |
1397 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1398 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1399 | #endif | |
1400 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1401 | GLOBAL_EXTERN atomic_t midCount; |
1402 | ||
1403 | /* Misc globals */ | |
5e500ed1 | 1404 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1da177e4 | 1405 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 1406 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1407 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
1408 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1409 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1410 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1411 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1412 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1413 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1414 | ||
21fed0d5 | 1415 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1416 | GLOBAL_EXTERN struct rb_root uidtree; |
1417 | GLOBAL_EXTERN struct rb_root gidtree; | |
1418 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1419 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1420 | GLOBAL_EXTERN struct rb_root siduidtree; |
1421 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1422 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1423 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1424 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1425 | |
9b646972 | 1426 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1427 | |
3bc303c2 | 1428 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1429 | extern struct workqueue_struct *cifsiod_wq; |
abd2e44d | 1430 | |
2dc7e1c0 PS |
1431 | extern mempool_t *cifs_mid_poolp; |
1432 | ||
23db65f5 JL |
1433 | /* Operations for different SMB versions */ |
1434 | #define SMB1_VERSION_STRING "1.0" | |
1435 | extern struct smb_version_operations smb1_operations; | |
1436 | extern struct smb_version_values smb1_values; | |
1080ef75 SF |
1437 | #define SMB21_VERSION_STRING "2.1" |
1438 | extern struct smb_version_operations smb21_operations; | |
1439 | extern struct smb_version_values smb21_values; | |
abd2e44d | 1440 | #endif /* _CIFS_GLOB_H */ |