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1da177e4
LT
1/*
2 * fs/cifs/cifsglob.h
3 *
366781c1 4 * Copyright (C) International Business Machines Corp., 2002,2008
1da177e4 5 * Author(s): Steve French (sfrench@us.ibm.com)
7ee1af76 6 * Jeremy Allison (jra@samba.org)
1da177e4
LT
7 *
8 * This library is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License as published
10 * by the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU Lesser General Public License for more details.
d38d8c74 17 *
1da177e4 18 */
abd2e44d
SJ
19#ifndef _CIFS_GLOB_H
20#define _CIFS_GLOB_H
21
1da177e4
LT
22#include <linux/in.h>
23#include <linux/in6.h>
5a0e3ad6 24#include <linux/slab.h>
2dc7e1c0 25#include <linux/mempool.h>
9b646972 26#include <linux/workqueue.h>
1da177e4 27#include "cifs_fs_sb.h"
442aa310 28#include "cifsacl.h"
d2b91521
SP
29#include <crypto/internal/hash.h>
30#include <linux/scatterlist.h>
8c3a2b4c 31#include <uapi/linux/cifs/cifs_mount.h>
d60622eb
PS
32#ifdef CONFIG_CIFS_SMB2
33#include "smb2pdu.h"
34#endif
d2b91521 35
76ec5e33
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36#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */
37
1da177e4
LT
38/*
39 * The sizes of various internal tables and strings
40 */
41#define MAX_UID_INFO 16
42#define MAX_SES_INFO 2
43#define MAX_TCON_INFO 4
44
cdf1246f 45#define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1)
1da177e4
LT
46
47#define CIFS_MIN_RCV_POOL 4
48
2c0c2a08 49#define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */
6d20e840
SJ
50/*
51 * default attribute cache timeout (jiffies)
52 */
53#define CIFS_DEF_ACTIMEO (1 * HZ)
54
55/*
56 * max attribute cache timeout (jiffies) - 2^30
57 */
58#define CIFS_MAX_ACTIMEO (1 << 30)
59
1da177e4
LT
60/*
61 * MAX_REQ is the maximum number of requests that WE will send
10b9b98e 62 * on one socket concurrently.
1da177e4 63 */
10b9b98e 64#define CIFS_MAX_REQ 32767
1da177e4 65
8ecaf67a
JL
66#define RFC1001_NAME_LEN 15
67#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
68
69/* currently length of NIP6_FMT */
70#define SERVER_NAME_LENGTH 40
1da177e4
LT
71#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
72
73/* used to define string lengths for reversing unicode strings */
74/* (256+1)*2 = 514 */
75/* (max path length + 1 for null) * 2 for unicode */
76#define MAX_NAME 514
77
9094fad1
PS
78/* SMB echo "timeout" -- FIXME: tunable? */
79#define SMB_ECHO_INTERVAL (60 * HZ)
80
1da177e4
LT
81#include "cifspdu.h"
82
1da177e4
LT
83#ifndef XATTR_DOS_ATTRIB
84#define XATTR_DOS_ATTRIB "user.DOSATTRIB"
85#endif
86
1da177e4
LT
87/*
88 * CIFS vfs client Status information (based on what we know.)
89 */
90
6c0f6218 91/* associated with each tcp and smb session */
1da177e4
LT
92enum statusEnum {
93 CifsNew = 0,
94 CifsGood,
95 CifsExiting,
fd88ce93
SF
96 CifsNeedReconnect,
97 CifsNeedNegotiate
1da177e4
LT
98};
99
100enum securityEnum {
515d82ff
JL
101 Unspecified = 0, /* not specified */
102 LANMAN, /* 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 */
c16fefa5 106 Kerberos, /* Kerberos via SPNEGO */
1da177e4
LT
107};
108
5f98ca9a 109struct session_key {
b609f06a 110 unsigned int len;
21e73393 111 char *response;
b609f06a
SF
112};
113
d2b91521
SP
114/* crypto security descriptor definition */
115struct sdesc {
116 struct shash_desc shash;
117 char ctx[];
118};
119
f7c5445a 120/* crypto hashing related structure/fields, not specific to a sec mech */
d2b91521
SP
121struct cifs_secmech {
122 struct crypto_shash *hmacmd5; /* hmac-md5 hash function */
123 struct crypto_shash *md5; /* md5 hash function */
3c1bf7e4 124 struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */
429b46f4 125 struct crypto_shash *cmacaes; /* block-cipher based MAC function */
d2b91521
SP
126 struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */
127 struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */
3c1bf7e4 128 struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */
429b46f4 129 struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */
d2b91521
SP
130};
131
d3686d54 132/* per smb session structure/fields */
d2b91521 133struct ntlmssp_auth {
5c234aa5 134 bool sesskey_per_smbsess; /* whether session key is per smb session */
d2b91521
SP
135 __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */
136 __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */
137 unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */
d3686d54 138 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */
d2b91521
SP
139};
140
442aa310
SF
141struct cifs_cred {
142 int uid;
143 int gid;
144 int mode;
145 int cecount;
146 struct cifs_sid osid;
147 struct cifs_sid gsid;
148 struct cifs_ntace *ntaces;
149 struct cifs_ace *aces;
150};
151
1da177e4
LT
152/*
153 *****************************************************************
154 * Except the CIFS PDUs themselves all the
155 * globally interesting structs should go here
156 *****************************************************************
157 */
158
bf5ea0e2
JL
159/*
160 * A smb_rqst represents a complete request to be issued to a server. It's
161 * formed by a kvec array, followed by an array of pages. Page data is assumed
162 * to start at the beginning of the first page.
163 */
164struct smb_rqst {
165 struct kvec *rq_iov; /* array of kvecs */
166 unsigned int rq_nvec; /* number of kvecs in array */
167 struct page **rq_pages; /* pointer to array of page ptrs */
168 unsigned int rq_npages; /* number pages in array */
169 unsigned int rq_pagesz; /* page size to use */
170 unsigned int rq_tailsz; /* length of last page */
171};
172
23db65f5
JL
173enum smb_version {
174 Smb_1 = 1,
dd446b16 175 Smb_20,
1080ef75 176 Smb_21,
e4aa25e7 177 Smb_30,
20b6d8b4 178 Smb_302,
23db65f5
JL
179};
180
121b046a
JL
181struct mid_q_entry;
182struct TCP_Server_Info;
55157dfb 183struct cifsFileInfo;
082d0642 184struct cifs_ses;
2e6e02ab 185struct cifs_tcon;
b669f33c 186struct dfs_info3_param;
1208ef1f 187struct cifs_fattr;
9224dfc2 188struct smb_vol;
fb1214e4 189struct cifs_fid;
fc9c5966 190struct cifs_readdata;
c9de5c80 191struct cifs_writedata;
f9c6e234 192struct cifs_io_parms;
92fc65a7 193struct cifs_search_info;
95a3f2f3 194struct cifsInodeInfo;
226730b4 195struct cifs_open_parms;
121b046a 196
23db65f5 197struct smb_version_operations {
121b046a
JL
198 int (*send_cancel)(struct TCP_Server_Info *, void *,
199 struct mid_q_entry *);
55157dfb 200 bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
082d0642 201 /* setup request: allocate mid, sign message */
fec344e3
JL
202 struct mid_q_entry *(*setup_request)(struct cifs_ses *,
203 struct smb_rqst *);
45740847 204 /* setup async request: allocate mid, sign message */
fec344e3
JL
205 struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *,
206 struct smb_rqst *);
082d0642
PS
207 /* check response: verify signature, map error */
208 int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *,
209 bool);
a891f0f8
PS
210 void (*add_credits)(struct TCP_Server_Info *, const unsigned int,
211 const int);
45275789 212 void (*set_credits)(struct TCP_Server_Info *, const int);
a891f0f8
PS
213 int * (*get_credits_field)(struct TCP_Server_Info *, const int);
214 unsigned int (*get_credits)(struct mid_q_entry *);
88257360 215 __u64 (*get_next_mid)(struct TCP_Server_Info *);
eb378711
PS
216 /* data offset from read response message */
217 unsigned int (*read_data_offset)(char *);
218 /* data length from read response message */
219 unsigned int (*read_data_length)(char *);
220 /* map smb to linux error */
221 int (*map_error)(char *, bool);
8aa26f3e
PS
222 /* find mid corresponding to the response message */
223 struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *);
224 void (*dump_detail)(void *);
44c58186
PS
225 void (*clear_stats)(struct cifs_tcon *);
226 void (*print_stats)(struct seq_file *m, struct cifs_tcon *);
769ee6a4 227 void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *);
8aa26f3e
PS
228 /* verify the message */
229 int (*check_message)(char *, unsigned int);
230 bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
316cf94a
PS
231 /* process transaction2 response */
232 bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *,
233 char *, int);
286170aa
PS
234 /* check if we need to negotiate */
235 bool (*need_neg)(struct TCP_Server_Info *);
236 /* negotiate to the server */
237 int (*negotiate)(const unsigned int, struct cifs_ses *);
24985c53
PS
238 /* set negotiated write size */
239 unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *);
240 /* set negotiated read size */
241 unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *);
58c45c58
PS
242 /* setup smb sessionn */
243 int (*sess_setup)(const unsigned int, struct cifs_ses *,
244 const struct nls_table *);
245 /* close smb session */
246 int (*logoff)(const unsigned int, struct cifs_ses *);
2e6e02ab
PS
247 /* connect to a server share */
248 int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *,
249 struct cifs_tcon *, const struct nls_table *);
250 /* close tree connecion */
251 int (*tree_disconnect)(const unsigned int, struct cifs_tcon *);
b669f33c
PS
252 /* get DFS referrals */
253 int (*get_dfs_refer)(const unsigned int, struct cifs_ses *,
254 const char *, struct dfs_info3_param **,
255 unsigned int *, const struct nls_table *, int);
af4281dc
PS
256 /* informational QFS call */
257 void (*qfs_tcon)(const unsigned int, struct cifs_tcon *);
68889f26
PS
258 /* check if a path is accessible or not */
259 int (*is_path_accessible)(const unsigned int, struct cifs_tcon *,
260 struct cifs_sb_info *, const char *);
1208ef1f
PS
261 /* query path data from the server */
262 int (*query_path_info)(const unsigned int, struct cifs_tcon *,
263 struct cifs_sb_info *, const char *,
264 FILE_ALL_INFO *, bool *);
4ad65044
PS
265 /* query file data from the server */
266 int (*query_file_info)(const unsigned int, struct cifs_tcon *,
267 struct cifs_fid *, FILE_ALL_INFO *);
1208ef1f
PS
268 /* get server index number */
269 int (*get_srv_inum)(const unsigned int, struct cifs_tcon *,
270 struct cifs_sb_info *, const char *,
271 u64 *uniqueid, FILE_ALL_INFO *);
d1433418
PS
272 /* set size by path */
273 int (*set_path_size)(const unsigned int, struct cifs_tcon *,
274 const char *, __u64, struct cifs_sb_info *, bool);
275 /* set size by file handle */
276 int (*set_file_size)(const unsigned int, struct cifs_tcon *,
277 struct cifsFileInfo *, __u64, bool);
6bdf6dbd
PS
278 /* set attributes */
279 int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *,
280 const unsigned int);
64a5cfa6
SF
281 int (*set_compression)(const unsigned int, struct cifs_tcon *,
282 struct cifsFileInfo *);
f6d76178
PS
283 /* check if we can send an echo or nor */
284 bool (*can_echo)(struct TCP_Server_Info *);
285 /* send echo request */
286 int (*echo)(struct TCP_Server_Info *);
f436720e
PS
287 /* create directory */
288 int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *,
289 struct cifs_sb_info *);
290 /* set info on created directory */
291 void (*mkdir_setinfo)(struct inode *, const char *,
292 struct cifs_sb_info *, struct cifs_tcon *,
293 const unsigned int);
f958ca5d
PS
294 /* remove directory */
295 int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *,
296 struct cifs_sb_info *);
ed6875e0
PS
297 /* unlink file */
298 int (*unlink)(const unsigned int, struct cifs_tcon *, const char *,
299 struct cifs_sb_info *);
300 /* open, rename and delete file */
301 int (*rename_pending_delete)(const char *, struct dentry *,
302 const unsigned int);
8ceb9843
PS
303 /* send rename request */
304 int (*rename)(const unsigned int, struct cifs_tcon *, const char *,
305 const char *, struct cifs_sb_info *);
d6e906f1
SF
306 /* send create hardlink request */
307 int (*create_hardlink)(const unsigned int, struct cifs_tcon *,
308 const char *, const char *,
309 struct cifs_sb_info *);
b42bf888
PS
310 /* query symlink target */
311 int (*query_symlink)(const unsigned int, struct cifs_tcon *,
312 const char *, char **, struct cifs_sb_info *);
fb1214e4 313 /* open a file for non-posix mounts */
226730b4
PS
314 int (*open)(const unsigned int, struct cifs_open_parms *,
315 __u32 *, FILE_ALL_INFO *);
fb1214e4
PS
316 /* set fid protocol-specific info */
317 void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32);
0ff78a22 318 /* close a file */
760ad0ca
PS
319 void (*close)(const unsigned int, struct cifs_tcon *,
320 struct cifs_fid *);
1d8c4c00
PS
321 /* send a flush request to the server */
322 int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *);
fc9c5966
PS
323 /* async read from the server */
324 int (*async_readv)(struct cifs_readdata *);
c9de5c80
PS
325 /* async write to the server */
326 int (*async_writev)(struct cifs_writedata *);
f9c6e234
PS
327 /* sync read from the server */
328 int (*sync_read)(const unsigned int, struct cifsFileInfo *,
329 struct cifs_io_parms *, unsigned int *, char **,
330 int *);
ba9ad725
PS
331 /* sync write to the server */
332 int (*sync_write)(const unsigned int, struct cifsFileInfo *,
333 struct cifs_io_parms *, unsigned int *, struct kvec *,
334 unsigned long);
92fc65a7
PS
335 /* open dir, start readdir */
336 int (*query_dir_first)(const unsigned int, struct cifs_tcon *,
337 const char *, struct cifs_sb_info *,
338 struct cifs_fid *, __u16,
339 struct cifs_search_info *);
340 /* continue readdir */
341 int (*query_dir_next)(const unsigned int, struct cifs_tcon *,
342 struct cifs_fid *,
343 __u16, struct cifs_search_info *srch_inf);
344 /* close dir */
345 int (*close_dir)(const unsigned int, struct cifs_tcon *,
346 struct cifs_fid *);
347 /* calculate a size of SMB message */
348 unsigned int (*calc_smb_size)(void *);
2e44b288
PS
349 /* check for STATUS_PENDING and process it in a positive case */
350 bool (*is_status_pending)(char *, struct TCP_Server_Info *, int);
95a3f2f3
PS
351 /* send oplock break response */
352 int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *,
353 struct cifsInodeInfo *);
76ec5e33
PS
354 /* query remote filesystem */
355 int (*queryfs)(const unsigned int, struct cifs_tcon *,
356 struct kstatfs *);
d39a4f71
PS
357 /* send mandatory brlock to the server */
358 int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64,
359 __u64, __u32, int, int, bool);
360 /* unlock range of mandatory locks */
361 int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *,
362 const unsigned int);
363 /* push brlocks from the cache to the server */
364 int (*push_mand_locks)(struct cifsFileInfo *);
b8c32dbb 365 /* get lease key of the inode */
a41a28bd 366 void (*get_lease_key)(struct inode *, struct cifs_fid *);
b8c32dbb 367 /* set lease key of the inode */
a41a28bd 368 void (*set_lease_key)(struct inode *, struct cifs_fid *);
b8c32dbb 369 /* generate new lease key */
a41a28bd 370 void (*new_lease_key)(struct cifs_fid *);
32811d24 371 int (*generate_signingkey)(struct cifs_ses *);
53ef1016
PS
372 int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
373 int (*query_mf_symlink)(const unsigned char *, char *, unsigned int *,
374 struct cifs_sb_info *, unsigned int);
375 /* if we can do cache read operations */
376 bool (*is_read_op)(__u32);
377 /* set oplock level for the inode */
42873b0a
PS
378 void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int,
379 bool *);
a41a28bd
PS
380 /* create lease context buffer for CREATE request */
381 char * (*create_lease_buf)(u8 *, u8);
42873b0a
PS
382 /* parse lease context buffer and return oplock/epoch info */
383 __u8 (*parse_lease_buf)(void *, unsigned int *);
23db65f5
JL
384};
385
386struct smb_version_values {
387 char *version_string;
e4aa25e7
SF
388 __u16 protocol_id;
389 __u32 req_capabilities;
106dc538
PS
390 __u32 large_lock_type;
391 __u32 exclusive_lock_type;
392 __u32 shared_lock_type;
393 __u32 unlock_lock_type;
1887f601
PS
394 size_t header_size;
395 size_t max_header_size;
eb378711 396 size_t read_rsp_size;
2dc7e1c0 397 __le16 lock_cmd;
29e20f9c
PS
398 unsigned int cap_unix;
399 unsigned int cap_nt_find;
400 unsigned int cap_large_files;
50285882
JL
401 __u16 signing_enabled;
402 __u16 signing_required;
a41a28bd 403 size_t create_lease_size;
23db65f5
JL
404};
405
1887f601
PS
406#define HEADER_SIZE(server) (server->vals->header_size)
407#define MAX_HEADER_SIZE(server) (server->vals->max_header_size)
408
f87d39d9
SF
409struct smb_vol {
410 char *username;
411 char *password;
412 char *domainname;
413 char *UNC;
f87d39d9
SF
414 char *iocharset; /* local code page for mapping to and from Unicode */
415 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
416 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
3da46565
EB
417 kuid_t cred_uid;
418 kuid_t linux_uid;
419 kgid_t linux_gid;
420 kuid_t backupuid;
421 kgid_t backupgid;
5206efd6
AV
422 umode_t file_mode;
423 umode_t dir_mode;
1e3cc57e
JL
424 enum securityEnum sectype; /* sectype requested via mnt opts */
425 bool sign; /* was signing requested via mnt opts? */
f87d39d9
SF
426 bool retry:1;
427 bool intr:1;
428 bool setuids:1;
429 bool override_uid:1;
430 bool override_gid:1;
431 bool dynperm:1;
432 bool noperm:1;
433 bool no_psx_acl:1; /* set if posix acl support should be disabled */
434 bool cifs_acl:1;
3d3ea8e6
SP
435 bool backupuid_specified; /* mount option backupuid is specified */
436 bool backupgid_specified; /* mount option backupgid is specified */
f87d39d9
SF
437 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
438 bool server_ino:1; /* use inode numbers from server ie UniqueId */
439 bool direct_io:1;
440 bool strict_io:1; /* strict cache behavior */
441 bool remap:1; /* set to remap seven reserved chars in filenames */
442 bool posix_paths:1; /* unset to not ask for posix pathnames. */
443 bool no_linux_ext:1;
444 bool sfu_emul:1;
445 bool nullauth:1; /* attempt to authenticate with null user */
446 bool nocase:1; /* request case insensitive filenames */
447 bool nobrl:1; /* disable sending byte range locks to srv */
448 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */
449 bool seal:1; /* request transport encryption on share */
450 bool nodfs:1; /* Do not request DFS, even if available */
451 bool local_lease:1; /* check leases only on local system, not remote */
452 bool noblocksnd:1;
453 bool noautotune:1;
454 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
455 bool fsc:1; /* enable fscache */
456 bool mfsymlinks:1; /* use Minshall+French Symlinks */
457 bool multiuser:1;
d4ffff1f 458 bool rwpidforward:1; /* pid forward for read/write operations */
a0b3df5c 459 bool nosharesock;
f87d39d9
SF
460 unsigned int rsize;
461 unsigned int wsize;
462 bool sockopt_tcp_nodelay:1;
f87d39d9 463 unsigned long actimeo; /* attribute cache timeout (jiffies) */
23db65f5
JL
464 struct smb_version_operations *ops;
465 struct smb_version_values *vals;
f87d39d9 466 char *prepath;
b979aaa1 467 struct sockaddr_storage dstaddr; /* destination address */
f87d39d9
SF
468 struct sockaddr_storage srcaddr; /* allow binding to a local IP */
469 struct nls_table *local_nls;
470};
471
25c7f41e
PS
472#define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
473 CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
474 CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
475 CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \
476 CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \
477 CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \
478 CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
479 CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
3d3ea8e6
SP
480 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \
481 CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID)
25c7f41e
PS
482
483#define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \
484 MS_NODEV | MS_SYNCHRONOUS)
485
486struct cifs_mnt_data {
487 struct cifs_sb_info *cifs_sb;
488 struct smb_vol *vol;
489 int flags;
490};
491
792af7b0
PS
492static inline unsigned int
493get_rfc1002_length(void *buf)
494{
495 return be32_to_cpu(*((__be32 *)buf));
496}
497
ec2e4523
PS
498static inline void
499inc_rfc1001_len(void *buf, int count)
500{
501 be32_add_cpu((__be32 *)buf, count);
502}
503
1da177e4 504struct TCP_Server_Info {
3b795210
SF
505 struct list_head tcp_ses_list;
506 struct list_head smb_ses_list;
e7ddee90 507 int srv_count; /* reference counter */
a10faeb2 508 /* 15 character server name + 0x20 16th byte indicating type = srv */
8ecaf67a 509 char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
23db65f5
JL
510 struct smb_version_operations *ops;
511 struct smb_version_values *vals;
c3dccf48 512 enum statusEnum tcpStatus; /* what we think the status is */
c359cf3c 513 char *hostname; /* hostname portion of UNC string */
1da177e4 514 struct socket *ssocket;
a9f1b85e 515 struct sockaddr_storage dstaddr;
3eb9a889 516 struct sockaddr_storage srcaddr; /* locally bind to this IP */
f1d0c998
RL
517#ifdef CONFIG_NET_NS
518 struct net *net;
519#endif
d38d8c74 520 wait_queue_head_t response_q;
1da177e4
LT
521 wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
522 struct list_head pending_mid_q;
edf1ae40
SF
523 bool noblocksnd; /* use blocking sendmsg */
524 bool noautotune; /* do not autotune send buf sizes */
6a5fa236 525 bool tcp_nodelay;
2d86dbc9 526 int credits; /* send no more requests at once */
fc40f9cf 527 unsigned int in_flight; /* number of requests on the wire to server */
2d86dbc9 528 spinlock_t req_lock; /* protect the two values above */
72ca545b 529 struct mutex srv_mutex;
1da177e4
LT
530 struct task_struct *tsk;
531 char server_GUID[16];
286170aa 532 __u16 sec_mode;
38d77c50 533 bool sign; /* is signing enabled on this connection? */
c3dccf48 534 bool session_estab; /* mark when very first sess is established */
28ea5290
PS
535#ifdef CONFIG_CIFS_SMB2
536 int echo_credits; /* echo reserved slots */
537 int oplock_credits; /* oplock break reserved slots */
538 bool echoes:1; /* enable echoes */
539#endif
c3dccf48 540 u16 dialect; /* dialect index that server chose */
10b9b98e 541 bool oplocks:1; /* enable oplocks */
1da177e4
LT
542 unsigned int maxReq; /* Clients should submit no more */
543 /* than maxReq distinct unanswered SMBs to the server when using */
544 /* multiplexed reads or writes */
545 unsigned int maxBuf; /* maxBuf specifies the maximum */
546 /* message size the server can send or receive for non-raw SMBs */
7e90d705
SF
547 /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */
548 /* when socket is setup (and during reconnect) before NegProt sent */
eca6acf9 549 unsigned int max_rw; /* maxRw specifies the maximum */
1da177e4
LT
550 /* message size the server can send or receive for */
551 /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
29e20f9c 552 unsigned int capabilities; /* selective disabling of caps by smb sess */
de7ed55d 553 int timeAdj; /* Adjust for difference in server time zone in sec */
243d04b6 554 __u64 CurrentMid; /* multiplex id - rotating counter */
d3ba50b1 555 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
a10faeb2 556 /* 16th byte of RFC1001 workstation name is always null */
8ecaf67a 557 char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
a0f8b4fb 558 __u32 sequence_number; /* for signing, protected by srv_mutex */
5f98ca9a 559 struct session_key session_key;
3a5ff61c 560 unsigned long lstrp; /* when we got last response from this server */
d2b91521 561 struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */
e598d1d8
JL
562#define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */
563#define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */
564#define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */
565 char negflavor; /* NEGOTIATE response flavor */
26efa0ba 566 /* extended security flavors that server supports */
c3dccf48
JL
567 bool sec_ntlmssp; /* supports NTLMSSP */
568 bool sec_kerberosu2u; /* supports U2U Kerberos */
26efa0ba
JL
569 bool sec_kerberos; /* supports plain Kerberos */
570 bool sec_mskerberos; /* supports legacy MS Kerberos */
2a37ef94 571 bool large_buf; /* is current buffer large? */
c74093b6 572 struct delayed_work echo; /* echo ping workqueue job */
1041e3f9
JL
573 struct kvec *iov; /* reusable kvec array for receives */
574 unsigned int nr_iov; /* number of kvecs in array */
2a37ef94
JL
575 char *smallbuf; /* pointer to current "small" buffer */
576 char *bigbuf; /* pointer to current "big" buffer */
577 unsigned int total_read; /* total amount of data read in this pass */
488f1d2d
SJ
578#ifdef CONFIG_CIFS_FSCACHE
579 struct fscache_cookie *fscache; /* client index cache cookie */
580#endif
c3dccf48 581#ifdef CONFIG_CIFS_STATS2
789e6661 582 atomic_t in_send; /* requests trying to send */
c3dccf48
JL
583 atomic_t num_waiters; /* blocked waiting to get in sendrecv */
584#endif
ec2e4523
PS
585#ifdef CONFIG_CIFS_SMB2
586 unsigned int max_read;
587 unsigned int max_write;
588#endif /* CONFIG_CIFS_SMB2 */
1da177e4
LT
589};
590
fc40f9cf
PS
591static inline unsigned int
592in_flight(struct TCP_Server_Info *server)
593{
594 unsigned int num;
595 spin_lock(&server->req_lock);
596 num = server->in_flight;
597 spin_unlock(&server->req_lock);
598 return num;
599}
600
2d86dbc9 601static inline bool
bc205ed1 602has_credits(struct TCP_Server_Info *server, int *credits)
fc40f9cf 603{
2d86dbc9 604 int num;
fc40f9cf 605 spin_lock(&server->req_lock);
bc205ed1 606 num = *credits;
fc40f9cf 607 spin_unlock(&server->req_lock);
2d86dbc9 608 return num > 0;
fc40f9cf
PS
609}
610
45275789 611static inline void
a891f0f8
PS
612add_credits(struct TCP_Server_Info *server, const unsigned int add,
613 const int optype)
45275789 614{
a891f0f8 615 server->ops->add_credits(server, add, optype);
45275789
PS
616}
617
618static inline void
619set_credits(struct TCP_Server_Info *server, const int val)
620{
621 server->ops->set_credits(server, val);
622}
623
88257360 624static inline __u64
3d378d3f 625get_next_mid64(struct TCP_Server_Info *server)
88257360
PS
626{
627 return server->ops->get_next_mid(server);
628}
629
3d378d3f
TG
630static inline __le16
631get_next_mid(struct TCP_Server_Info *server)
632{
633 __u16 mid = get_next_mid64(server);
634 /*
635 * The value in the SMB header should be little endian for easy
636 * on-the-wire decoding.
637 */
638 return cpu_to_le16(mid);
639}
640
641static inline __u16
642get_mid(const struct smb_hdr *smb)
643{
644 return le16_to_cpu(smb->Mid);
645}
646
647static inline bool
648compare_mid(__u16 mid, const struct smb_hdr *smb)
649{
650 return mid == le16_to_cpu(smb->Mid);
651}
652
24985c53
PS
653/*
654 * When the server supports very large reads and writes via POSIX extensions,
655 * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not
656 * including the RFC1001 length.
657 *
658 * Note that this might make for "interesting" allocation problems during
659 * writeback however as we have to allocate an array of pointers for the
660 * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096.
661 *
662 * For reads, there is a similar problem as we need to allocate an array
663 * of kvecs to handle the receive, though that should only need to be done
664 * once.
665 */
666#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4)
667#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4)
668
669/*
670 * When the server doesn't allow large posix writes, only allow a rsize/wsize
671 * of 2^17-1 minus the size of the call header. That allows for a read or
672 * write up to the maximum size described by RFC1002.
673 */
674#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)
675#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4)
676
677/*
678 * The default wsize is 1M. find_get_pages seems to return a maximum of 256
679 * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill
680 * a single wsize request with a single call.
681 */
682#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
683
684/*
685 * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
686 * those values when posix extensions aren't in force. In actuality here, we
687 * use 65536 to allow for a write that is a multiple of 4k. Most servers seem
688 * to be ok with the extra byte even though Windows doesn't send writes that
689 * are that large.
690 *
691 * Citation:
692 *
693 * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
694 */
695#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
696#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
697
f1d0c998
RL
698/*
699 * Macros to allow the TCP_Server_Info->net field and related code to drop out
700 * when CONFIG_NET_NS isn't set.
701 */
702
703#ifdef CONFIG_NET_NS
704
705static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
706{
707 return srv->net;
708}
709
710static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
711{
712 srv->net = net;
713}
714
715#else
716
717static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
718{
719 return &init_net;
720}
721
722static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
723{
724}
725
726#endif
727
1da177e4
LT
728/*
729 * Session structure. One of these for each uid session with a particular host
730 */
96daf2b0 731struct cifs_ses {
14fbf50d 732 struct list_head smb_ses_list;
3b795210 733 struct list_head tcon_list;
d7b619cf 734 struct mutex session_mutex;
1da177e4 735 struct TCP_Server_Info *server; /* pointer to server info */
14fbf50d 736 int ses_count; /* reference counter */
1da177e4 737 enum statusEnum status;
750d1151 738 unsigned overrideSecFlg; /* if non-zero override global sec flags */
1da177e4 739 __u16 ipc_tid; /* special tid for connection to IPC share */
ad009ac9
SF
740 char *serverOS; /* name of operating system underlying server */
741 char *serverNOS; /* name of network operating system of server */
1da177e4 742 char *serverDomain; /* security realm of server */
286170aa 743 __u64 Suid; /* remote smb uid */
64ed39dd
EB
744 kuid_t linux_uid; /* overriding owner of files on the mount */
745 kuid_t cred_uid; /* owner of credentials */
29e20f9c 746 unsigned int capabilities;
d38d8c74 747 char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
ad009ac9 748 TCP names - will ipv6 and sctp addresses fit? */
34c87901
SF
749 char *user_name; /* must not be null except during init of sess
750 and after mount option parsing we fill it */
d38d8c74
SF
751 char *domainName;
752 char *password;
5d0d2882 753 struct session_key auth_key;
d3686d54 754 struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */
28e11bd8
JL
755 enum securityEnum sectype; /* what security flavor was specified? */
756 bool sign; /* is signing required? */
3b795210 757 bool need_reconnect:1; /* connection reset, uid now invalid */
5478f9ba
PS
758#ifdef CONFIG_CIFS_SMB2
759 __u16 session_flags;
32811d24 760 char smb3signingkey[SMB3_SIGN_KEY_SIZE]; /* for signing smb3 packets */
5478f9ba 761#endif /* CONFIG_CIFS_SMB2 */
1da177e4 762};
233839b1 763
29e20f9c
PS
764static inline bool
765cap_unix(struct cifs_ses *ses)
766{
767 return ses->server->vals->cap_unix & ses->capabilities;
768}
769
1da177e4
LT
770/*
771 * there is one of these for each connection to a resource on a particular
d38d8c74 772 * session
1da177e4 773 */
96daf2b0 774struct cifs_tcon {
f1987b44
JL
775 struct list_head tcon_list;
776 int tc_count;
1da177e4 777 struct list_head openFileList;
96daf2b0 778 struct cifs_ses *ses; /* pointer to session associated with */
254e55ed 779 char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
1da177e4 780 char *nativeFileSystem;
00e485b0 781 char *password; /* for share-level security */
faaf946a 782 __u32 tid; /* The 4 byte tree id */
1da177e4
LT
783 __u16 Flags; /* optional support bits */
784 enum statusEnum tidStatus;
1da177e4
LT
785#ifdef CONFIG_CIFS_STATS
786 atomic_t num_smbs_sent;
44c58186
PS
787 union {
788 struct {
789 atomic_t num_writes;
790 atomic_t num_reads;
791 atomic_t num_flushes;
792 atomic_t num_oplock_brks;
793 atomic_t num_opens;
794 atomic_t num_closes;
795 atomic_t num_deletes;
796 atomic_t num_mkdirs;
797 atomic_t num_posixopens;
798 atomic_t num_posixmkdirs;
799 atomic_t num_rmdirs;
800 atomic_t num_renames;
801 atomic_t num_t2renames;
802 atomic_t num_ffirst;
803 atomic_t num_fnext;
804 atomic_t num_fclose;
805 atomic_t num_hardlinks;
806 atomic_t num_symlinks;
807 atomic_t num_locks;
808 atomic_t num_acl_get;
809 atomic_t num_acl_set;
810 } cifs_stats;
d60622eb
PS
811#ifdef CONFIG_CIFS_SMB2
812 struct {
813 atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS];
814 atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS];
815 } smb2_stats;
816#endif /* CONFIG_CIFS_SMB2 */
44c58186 817 } stats;
a5a2b489
SF
818#ifdef CONFIG_CIFS_STATS2
819 unsigned long long time_writes;
820 unsigned long long time_reads;
821 unsigned long long time_opens;
822 unsigned long long time_deletes;
823 unsigned long long time_closes;
824 unsigned long long time_mkdirs;
825 unsigned long long time_rmdirs;
826 unsigned long long time_renames;
827 unsigned long long time_t2renames;
828 unsigned long long time_ffirst;
829 unsigned long long time_fnext;
830 unsigned long long time_fclose;
831#endif /* CONFIG_CIFS_STATS2 */
1da177e4
LT
832 __u64 bytes_read;
833 __u64 bytes_written;
834 spinlock_t stat_lock;
a5a2b489 835#endif /* CONFIG_CIFS_STATS */
1da177e4 836 FILE_SYSTEM_DEVICE_INFO fsDevInfo;
254e55ed 837 FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
1da177e4 838 FILE_SYSTEM_UNIX_INFO fsUnixInfo;
4b18f2a9
SF
839 bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */
840 bool retry:1;
841 bool nocase:1;
95b1cb90 842 bool seal:1; /* transport encryption for this mounted share */
4b18f2a9 843 bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
c18c842b 844 for this mount even if server would support */
84210e91 845 bool local_lease:1; /* check leases (only) on local system not remote */
64cc2c63 846 bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */
3b795210 847 bool need_reconnect:1; /* connection reset, tid now invalid */
faaf946a
PS
848#ifdef CONFIG_CIFS_SMB2
849 bool print:1; /* set if connection to printer share */
850 bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */
769ee6a4 851 __le32 capabilities;
faaf946a
PS
852 __u32 share_flags;
853 __u32 maximal_access;
854 __u32 vol_serial_number;
855 __le64 vol_create_time;
856#endif /* CONFIG_CIFS_SMB2 */
d03382ce
SJ
857#ifdef CONFIG_CIFS_FSCACHE
858 u64 resource_id; /* server resource id */
859 struct fscache_cookie *fscache; /* cookie for share */
860#endif
233839b1 861 struct list_head pending_opens; /* list of incomplete opens */
c18c842b 862 /* BB add field for back pointer to sb struct(s)? */
1da177e4
LT
863};
864
7ffec372
JL
865/*
866 * This is a refcounted and timestamped container for a tcon pointer. The
867 * container holds a tcon reference. It is considered safe to free one of
868 * these when the tl_count goes to 0. The tl_time is the time of the last
869 * "get" on the container.
870 */
871struct tcon_link {
b647c35f 872 struct rb_node tl_rbnode;
6d4a0832 873 kuid_t tl_uid;
9d002df4
JL
874 unsigned long tl_flags;
875#define TCON_LINK_MASTER 0
876#define TCON_LINK_PENDING 1
877#define TCON_LINK_IN_TREE 2
878 unsigned long tl_time;
879 atomic_t tl_count;
96daf2b0 880 struct cifs_tcon *tl_tcon;
7ffec372
JL
881};
882
9d002df4 883extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb);
7ffec372 884
96daf2b0 885static inline struct cifs_tcon *
7ffec372
JL
886tlink_tcon(struct tcon_link *tlink)
887{
9d002df4 888 return tlink->tl_tcon;
7ffec372
JL
889}
890
9d002df4 891extern void cifs_put_tlink(struct tcon_link *tlink);
7ffec372 892
13cfb733
JL
893static inline struct tcon_link *
894cifs_get_tlink(struct tcon_link *tlink)
895{
9d002df4
JL
896 if (tlink && !IS_ERR(tlink))
897 atomic_inc(&tlink->tl_count);
13cfb733
JL
898 return tlink;
899}
900
7ffec372 901/* This function is always expected to succeed */
96daf2b0 902extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
7ffec372 903
233839b1
PS
904#define CIFS_OPLOCK_NO_CHANGE 0xfe
905
906struct cifs_pending_open {
907 struct list_head olist;
908 struct tcon_link *tlink;
909 __u8 lease_key[16];
910 __u32 oplock;
911};
912
1da177e4 913/*
7ee1af76
JA
914 * This info hangs off the cifsFileInfo structure, pointed to by llist.
915 * This is used to track byte stream locks on the file
1da177e4
LT
916 */
917struct cifsLockInfo {
7ee1af76 918 struct list_head llist; /* pointer to next cifsLockInfo */
85160e03
PS
919 struct list_head blist; /* pointer to locks blocked on this */
920 wait_queue_head_t block_q;
7ee1af76
JA
921 __u64 offset;
922 __u64 length;
03776f45 923 __u32 pid;
04a6aa8a 924 __u32 type;
1da177e4
LT
925};
926
927/*
928 * One of these for each open instance of a file
929 */
930struct cifs_search_info {
931 loff_t index_of_last_entry;
932 __u16 entries_in_buffer;
933 __u16 info_level;
934 __u32 resume_key;
d38d8c74
SF
935 char *ntwrk_buf_start;
936 char *srch_entries_start;
0752f152 937 char *last_entry;
eaf35b1e 938 const char *presume_name;
1da177e4 939 unsigned int resume_name_len;
4b18f2a9
SF
940 bool endOfSearch:1;
941 bool emptyDir:1;
942 bool unicode:1;
943 bool smallBuf:1; /* so we know which buf_release function to call */
1da177e4
LT
944};
945
226730b4
PS
946struct cifs_open_parms {
947 struct cifs_tcon *tcon;
948 struct cifs_sb_info *cifs_sb;
949 int disposition;
950 int desired_access;
951 int create_options;
952 const char *path;
953 struct cifs_fid *fid;
9cbc0b73 954 bool reconnect:1;
226730b4
PS
955};
956
4b4de76e
PS
957struct cifs_fid {
958 __u16 netfid;
f0df737e
PS
959#ifdef CONFIG_CIFS_SMB2
960 __u64 persistent_fid; /* persist file id for smb2 */
961 __u64 volatile_fid; /* volatile file id for smb2 */
b8c32dbb 962 __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */
f0df737e 963#endif
233839b1 964 struct cifs_pending_open *pending_open;
42873b0a
PS
965 unsigned int epoch;
966 bool purge_cache;
4b4de76e
PS
967};
968
f45d3416
PS
969struct cifs_fid_locks {
970 struct list_head llist;
971 struct cifsFileInfo *cfile; /* fid that owns locks */
972 struct list_head locks; /* locks held by fid above */
973};
974
1da177e4
LT
975struct cifsFileInfo {
976 struct list_head tlist; /* pointer to next fid owned by tcon */
977 struct list_head flist; /* next fid (file instance) for this inode */
f45d3416 978 struct cifs_fid_locks *llist; /* brlocks held by this fid */
fef59fd7 979 kuid_t uid; /* allows finding which FileInfo structure */
1da177e4 980 __u32 pid; /* process id who opened file */
4b4de76e 981 struct cifs_fid fid; /* file id from remote */
1da177e4
LT
982 /* BB add lock scope info here if needed */ ;
983 /* lock scope id (0 if none) */
a5e18bc3 984 struct dentry *dentry;
15886177 985 unsigned int f_flags;
13cfb733 986 struct tcon_link *tlink;
4b18f2a9 987 bool invalidHandle:1; /* file closed via session abend */
3bc303c2 988 bool oplock_break_cancelled:1;
6c0f6218 989 int count; /* refcount protected by cifs_file_list_lock */
a6ce4932 990 struct mutex fh_mutex; /* prevents reopen race after dead ses*/
1da177e4 991 struct cifs_search_info srch_inf;
9b646972 992 struct work_struct oplock_break; /* work for oplock breaks */
1da177e4
LT
993};
994
fa2989f4
PS
995struct cifs_io_parms {
996 __u16 netfid;
09a4707e
PS
997#ifdef CONFIG_CIFS_SMB2
998 __u64 persistent_fid; /* persist file id for smb2 */
999 __u64 volatile_fid; /* volatile file id for smb2 */
1000#endif
fa2989f4
PS
1001 __u32 pid;
1002 __u64 offset;
1003 unsigned int length;
96daf2b0 1004 struct cifs_tcon *tcon;
fa2989f4
PS
1005};
1006
09a4707e
PS
1007struct cifs_readdata;
1008
1009/* asynchronous read support */
1010struct cifs_readdata {
1011 struct kref refcount;
1012 struct list_head list;
1013 struct completion done;
1014 struct cifsFileInfo *cfile;
1015 struct address_space *mapping;
1016 __u64 offset;
1017 unsigned int bytes;
1018 pid_t pid;
1019 int result;
09a4707e 1020 struct work_struct work;
8321fec4
JL
1021 int (*read_into_pages)(struct TCP_Server_Info *server,
1022 struct cifs_readdata *rdata,
1023 unsigned int len);
5819575e 1024 struct kvec iov;
8321fec4
JL
1025 unsigned int pagesz;
1026 unsigned int tailsz;
c5fab6f4
JL
1027 unsigned int nr_pages;
1028 struct page *pages[];
09a4707e
PS
1029};
1030
33319141
PS
1031struct cifs_writedata;
1032
1033/* asynchronous write support */
1034struct cifs_writedata {
1035 struct kref refcount;
1036 struct list_head list;
1037 struct completion done;
1038 enum writeback_sync_modes sync_mode;
1039 struct work_struct work;
1040 struct cifsFileInfo *cfile;
1041 __u64 offset;
1042 pid_t pid;
1043 unsigned int bytes;
1044 int result;
eddb079d
JL
1045 unsigned int pagesz;
1046 unsigned int tailsz;
33319141
PS
1047 unsigned int nr_pages;
1048 struct page *pages[1];
1049};
1050
5f6dbc9e
JL
1051/*
1052 * Take a reference on the file private data. Must be called with
1053 * cifs_file_list_lock held.
1054 */
764a1b1a
JL
1055static inline void
1056cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file)
6ab409b5 1057{
5f6dbc9e 1058 ++cifs_file->count;
6ab409b5
DK
1059}
1060
764a1b1a 1061struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file);
b33879aa 1062void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
6ab409b5 1063
18cceb6a
PS
1064#define CIFS_CACHE_READ_FLG 1
1065#define CIFS_CACHE_HANDLE_FLG 2
42873b0a 1066#define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG)
18cceb6a 1067#define CIFS_CACHE_WRITE_FLG 4
42873b0a
PS
1068#define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG)
1069#define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG)
18cceb6a
PS
1070
1071#define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG)
53ef1016 1072#define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG)
18cceb6a
PS
1073#define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG)
1074
1da177e4
LT
1075/*
1076 * One of these for each file inode
1077 */
1078
1079struct cifsInodeInfo {
d59dad2b 1080 bool can_cache_brlcks;
f45d3416 1081 struct list_head llist; /* locks helb by this inode */
1b4b55a1 1082 struct rw_semaphore lock_sem; /* protect the fields above */
d38d8c74 1083 /* BB add in lists for dirty pages i.e. write caching info for oplock */
1da177e4 1084 struct list_head openFileList;
1da177e4 1085 __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
18cceb6a 1086 unsigned int oplock; /* oplock/lease level we have */
42873b0a 1087 unsigned int epoch; /* used to track lease state changes */
aae62fdb
JL
1088 bool delete_pending; /* DELETE_ON_CLOSE is set */
1089 bool invalid_mapping; /* pagecache is invalid */
1090 unsigned long time; /* jiffies of last update of inode */
597b027f 1091 u64 server_eof; /* current file size on server -- protected by i_lock */
cc0bad75 1092 u64 uniqueid; /* server inode number */
20054bd6 1093 u64 createtime; /* creation time on server */
b8c32dbb
PS
1094#ifdef CONFIG_CIFS_SMB2
1095 __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */
1096#endif
9451a9a5
SJ
1097#ifdef CONFIG_CIFS_FSCACHE
1098 struct fscache_cookie *fscache;
1099#endif
1da177e4
LT
1100 struct inode vfs_inode;
1101};
1102
1103static inline struct cifsInodeInfo *
1104CIFS_I(struct inode *inode)
1105{
1106 return container_of(inode, struct cifsInodeInfo, vfs_inode);
1107}
1108
1109static inline struct cifs_sb_info *
1110CIFS_SB(struct super_block *sb)
1111{
1112 return sb->s_fs_info;
1113}
1114
ab2f218f 1115static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
ac67055e
JA
1116{
1117 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
1118 return '/';
1119 else
1120 return '\\';
1121}
1da177e4 1122
f87d39d9
SF
1123static inline void
1124convert_delimiter(char *path, char delim)
1125{
1cc9bd68 1126 char old_delim, *pos;
f87d39d9
SF
1127
1128 if (delim == '/')
1129 old_delim = '\\';
1130 else
1131 old_delim = '/';
1132
1cc9bd68
SF
1133 pos = path;
1134 while ((pos = strchr(pos, old_delim)))
1135 *pos = delim;
f87d39d9
SF
1136}
1137
a4544347
SF
1138#ifdef CONFIG_CIFS_STATS
1139#define cifs_stats_inc atomic_inc
1140
96daf2b0 1141static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
a4544347
SF
1142 unsigned int bytes)
1143{
1144 if (bytes) {
1145 spin_lock(&tcon->stat_lock);
1146 tcon->bytes_written += bytes;
1147 spin_unlock(&tcon->stat_lock);
1148 }
1149}
1150
96daf2b0 1151static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
a4544347
SF
1152 unsigned int bytes)
1153{
1154 spin_lock(&tcon->stat_lock);
1155 tcon->bytes_read += bytes;
1156 spin_unlock(&tcon->stat_lock);
1157}
1158#else
1159
d38d8c74
SF
1160#define cifs_stats_inc(field) do {} while (0)
1161#define cifs_stats_bytes_written(tcon, bytes) do {} while (0)
1162#define cifs_stats_bytes_read(tcon, bytes) do {} while (0)
a4544347
SF
1163
1164#endif
1165
2b84a36c
JL
1166
1167/*
44d22d84
JL
1168 * This is the prototype for the mid receive function. This function is for
1169 * receiving the rest of the SMB frame, starting with the WordCount (which is
1170 * just after the MID in struct smb_hdr). Note:
1171 *
1172 * - This will be called by cifsd, with no locks held.
1173 * - The mid will still be on the pending_mid_q.
1174 * - mid->resp_buf will point to the current buffer.
1175 *
1176 * Returns zero on a successful receive, or an error. The receive state in
1177 * the TCP_Server_Info will also be updated.
1178 */
1179typedef int (mid_receive_t)(struct TCP_Server_Info *server,
1180 struct mid_q_entry *mid);
1181
1182/*
1183 * This is the prototype for the mid callback function. This is called once the
1184 * mid has been received off of the socket. When creating one, take special
1185 * care to avoid deadlocks. Things to bear in mind:
2b84a36c 1186 *
3c1105df
JL
1187 * - it will be called by cifsd, with no locks held
1188 * - the mid will be removed from any lists
2b84a36c
JL
1189 */
1190typedef void (mid_callback_t)(struct mid_q_entry *mid);
1191
1da177e4
LT
1192/* one of these for every pending CIFS request to the server */
1193struct mid_q_entry {
1194 struct list_head qhead; /* mids waiting on reply from this server */
2dc7e1c0 1195 struct TCP_Server_Info *server; /* server corresponding to this mid */
7c9421e1
PS
1196 __u64 mid; /* multiplex id */
1197 __u32 pid; /* process id */
1da177e4 1198 __u32 sequence_number; /* for CIFS signing */
1047abc1
SF
1199 unsigned long when_alloc; /* when mid was created */
1200#ifdef CONFIG_CIFS_STATS2
1201 unsigned long when_sent; /* time when smb send finished */
1202 unsigned long when_received; /* when demux complete (taken off wire) */
1203#endif
44d22d84 1204 mid_receive_t *receive; /* call receive callback */
2b84a36c
JL
1205 mid_callback_t *callback; /* call completion callback */
1206 void *callback_data; /* general purpose pointer for callback */
d4e4854f 1207 void *resp_buf; /* pointer to received SMB header */
7c9421e1
PS
1208 int mid_state; /* wish this were enum but can not pass to wait_event */
1209 __le16 command; /* smb command code */
1210 bool large_buf:1; /* if valid response, is pointer to large buf */
4b18f2a9
SF
1211 bool multiRsp:1; /* multiple trans2 responses for one request */
1212 bool multiEnd:1; /* both received */
1da177e4
LT
1213};
1214
789e6661
SF
1215/* Make code in transport.c a little cleaner by moving
1216 update of optional stats into function below */
1217#ifdef CONFIG_CIFS_STATS2
1218
1219static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
1220{
1221 atomic_inc(&server->in_send);
1222}
1223
1224static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
1225{
1226 atomic_dec(&server->in_send);
1227}
1228
1229static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
1230{
1231 atomic_inc(&server->num_waiters);
1232}
1233
1234static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
1235{
1236 atomic_dec(&server->num_waiters);
1237}
1238
1239static inline void cifs_save_when_sent(struct mid_q_entry *mid)
1240{
1241 mid->when_sent = jiffies;
1242}
1243#else
1244static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
1245{
1246}
1247static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
1248{
1249}
1250
1251static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
1252{
1253}
1254
1255static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
1256{
1257}
1258
1259static inline void cifs_save_when_sent(struct mid_q_entry *mid)
1260{
1261}
1262#endif
1da177e4 1263
ff5dbd9e
SF
1264/* for pending dnotify requests */
1265struct dir_notify_req {
13cd4b7f
SF
1266 struct list_head lhead;
1267 __le16 Pid;
1268 __le16 PidHigh;
1269 __u16 Mid;
1270 __u16 Tid;
1271 __u16 Uid;
1272 __u16 netfid;
1273 __u32 filter; /* CompletionFilter (for multishot) */
1274 int multishot;
1275 struct file *pfile;
ff5dbd9e
SF
1276};
1277
366781c1
SF
1278struct dfs_info3_param {
1279 int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/
8aad018b 1280 int path_consumed;
366781c1
SF
1281 int server_type;
1282 int ref_flag;
1283 char *path_name;
1284 char *node_name;
1285};
1286
cc0bad75
JL
1287/*
1288 * common struct for holding inode info when searching for or updating an
1289 * inode with new info
1290 */
1291
1292#define CIFS_FATTR_DFS_REFERRAL 0x1
0b8f18e3
JL
1293#define CIFS_FATTR_DELETE_PENDING 0x2
1294#define CIFS_FATTR_NEED_REVAL 0x4
3d694380 1295#define CIFS_FATTR_INO_COLLISION 0x8
74d290da 1296#define CIFS_FATTR_UNKNOWN_NLINK 0x10
cc0bad75
JL
1297
1298struct cifs_fattr {
1299 u32 cf_flags;
1300 u32 cf_cifsattrs;
1301 u64 cf_uniqueid;
1302 u64 cf_eof;
1303 u64 cf_bytes;
20054bd6 1304 u64 cf_createtime;
4a2c8cf5
EB
1305 kuid_t cf_uid;
1306 kgid_t cf_gid;
cc0bad75
JL
1307 umode_t cf_mode;
1308 dev_t cf_rdev;
1309 unsigned int cf_nlink;
1310 unsigned int cf_dtype;
1311 struct timespec cf_atime;
1312 struct timespec cf_mtime;
1313 struct timespec cf_ctime;
1314};
1315
366781c1
SF
1316static inline void free_dfs_info_param(struct dfs_info3_param *param)
1317{
1318 if (param) {
1319 kfree(param->path_name);
1320 kfree(param->node_name);
1321 kfree(param);
1322 }
1323}
1324
1325static inline void free_dfs_info_array(struct dfs_info3_param *param,
1326 int number_of_items)
1327{
1328 int i;
1329 if ((number_of_items == 0) || (param == NULL))
1330 return;
1331 for (i = 0; i < number_of_items; i++) {
1332 kfree(param[i].path_name);
1333 kfree(param[i].node_name);
1334 }
1335 kfree(param);
1336}
1337
1da177e4
LT
1338#define MID_FREE 0
1339#define MID_REQUEST_ALLOCATED 1
1340#define MID_REQUEST_SUBMITTED 2
1341#define MID_RESPONSE_RECEIVED 4
1342#define MID_RETRY_NEEDED 8 /* session closed while this request out */
71823baf 1343#define MID_RESPONSE_MALFORMED 0x10
3c1105df 1344#define MID_SHUTDOWN 0x20
ec637e3f
SF
1345
1346/* Types of response buffer returned from SendReceive2 */
1347#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
1348#define CIFS_SMALL_BUFFER 1
1349#define CIFS_LARGE_BUFFER 2
1350#define CIFS_IOVEC 4 /* array of response buffers */
1da177e4 1351
133672ef 1352/* Type of Request to SendReceive2 */
7749981e
JL
1353#define CIFS_BLOCKING_OP 1 /* operation can block */
1354#define CIFS_ASYNC_OP 2 /* do not wait for response */
1355#define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */
133672ef
SF
1356#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */
1357#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */
1358#define CIFS_NO_RESP 0x040 /* no response buffer required */
1359
a891f0f8
PS
1360/* Type of request operation */
1361#define CIFS_ECHO_OP 0x080 /* echo request */
1362#define CIFS_OBREAK_OP 0x0100 /* oplock break request */
ec2e4523
PS
1363#define CIFS_NEG_OP 0x0200 /* negotiate request */
1364#define CIFS_OP_MASK 0x0380 /* mask request type */
a891f0f8 1365
3979877e
SF
1366/* Security Flags: indicate type of session setup needed */
1367#define CIFSSEC_MAY_SIGN 0x00001
1368#define CIFSSEC_MAY_NTLM 0x00002
1369#define CIFSSEC_MAY_NTLMV2 0x00004
1370#define CIFSSEC_MAY_KRB5 0x00008
1371#ifdef CONFIG_CIFS_WEAK_PW_HASH
1372#define CIFSSEC_MAY_LANMAN 0x00010
1373#define CIFSSEC_MAY_PLNTXT 0x00020
516897a2
SF
1374#else
1375#define CIFSSEC_MAY_LANMAN 0
1376#define CIFSSEC_MAY_PLNTXT 0
3979877e
SF
1377#endif /* weak passwords */
1378#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */
ac683924 1379#define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */
3979877e
SF
1380
1381#define CIFSSEC_MUST_SIGN 0x01001
1382/* note that only one of the following can be set so the
1383result of setting MUST flags more than once will be to
1384require use of the stronger protocol */
1385#define CIFSSEC_MUST_NTLM 0x02002
1386#define CIFSSEC_MUST_NTLMV2 0x04004
1387#define CIFSSEC_MUST_KRB5 0x08008
1388#ifdef CONFIG_CIFS_WEAK_PW_HASH
1389#define CIFSSEC_MUST_LANMAN 0x10010
1390#define CIFSSEC_MUST_PLNTXT 0x20020
0d3a01fa 1391#ifdef CONFIG_CIFS_UPCALL
20d1752f 1392#define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */
0d3a01fa 1393#else
20d1752f 1394#define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */
016ec75f 1395#endif /* UPCALL */
0d3a01fa 1396#else /* do not allow weak pw hash */
88a4412b
SF
1397#define CIFSSEC_MUST_LANMAN 0
1398#define CIFSSEC_MUST_PLNTXT 0
0d3a01fa 1399#ifdef CONFIG_CIFS_UPCALL
ac683924 1400#define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */
d38d8c74 1401#else
ac683924 1402#define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */
016ec75f 1403#endif /* UPCALL */
3979877e
SF
1404#endif /* WEAK_PW_HASH */
1405#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */
ac683924 1406#define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */
3979877e 1407
896a8fc2 1408#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP)
ef571cad 1409#define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
ac683924 1410#define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)
1da177e4
LT
1411/*
1412 *****************************************************************
1413 * All constants go here
1414 *****************************************************************
1415 */
1416
1417#define UID_HASH (16)
1418
1419/*
1420 * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the
1421 * following to be declared.
1422 */
1423
1424/****************************************************************************
1425 * Locking notes. All updates to global variables and lists should be
1426 * protected by spinlocks or semaphores.
1427 *
1428 * Spinlocks
1429 * ---------
1430 * GlobalMid_Lock protects:
1431 * list operations on pending_mid_q and oplockQ
1432 * updates to XID counters, multiplex id and SMB sequence numbers
6573e9b7 1433 * cifs_file_list_lock protects:
1da177e4
LT
1434 * list operations on tcp and SMB session lists and tCon lists
1435 * f_owner.lock protects certain per file struct operations
1436 * mapping->page_lock protects certain per page operations
1437 *
1438 * Semaphores
1439 * ----------
1440 * sesSem operations on smb session
1441 * tconSem operations on tree connection
d38d8c74 1442 * fh_sem file handle reconnection operations
1da177e4
LT
1443 *
1444 ****************************************************************************/
1445
1446#ifdef DECLARE_GLOBALS_HERE
1447#define GLOBAL_EXTERN
1448#else
1449#define GLOBAL_EXTERN extern
1450#endif
1451
e7ddee90
JL
1452/*
1453 * the list of TCP_Server_Info structures, ie each of the sockets
fb396016 1454 * connecting our client to a distinct server (ip address), is
e7ddee90 1455 * chained together by cifs_tcp_ses_list. The list of all our SMB
fb396016 1456 * sessions (and from that the tree connections) can be found
e7ddee90
JL
1457 * by iterating over cifs_tcp_ses_list
1458 */
1459GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
1460
f1987b44
JL
1461/*
1462 * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
1463 * tcp session, and the list of tcon's per smb session. It also protects
1464 * the reference counters for the server, smb session, and tcon. Finally,
1465 * changes to the tcon->tidStatus should be done while holding this lock.
1466 */
3f9bcca7 1467GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock;
ddb4cbfc
SF
1468
1469/*
1470 * This lock protects the cifs_file->llist and cifs_file->flist
1471 * list operations, and updates to some flags (cifs_file->invalidHandle)
1472 * It will be moved to either use the tcon->stat_lock or equivalent later.
1473 * If cifs_tcp_ses_lock and the lock below are both needed to be held, then
1474 * the cifs_tcp_ses_lock must be grabbed first and released last.
1475 */
4477288a 1476GLOBAL_EXTERN spinlock_t cifs_file_list_lock;
1da177e4 1477
0eff0e26 1478#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
99ee4dbd
SF
1479/* Outstanding dir notify requests */
1480GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
1481/* DirNotify response queue */
1482GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
0eff0e26 1483#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
ff5dbd9e 1484
1da177e4
LT
1485/*
1486 * Global transaction id (XID) information
1487 */
1488GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */
254e55ed 1489GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
1da177e4 1490GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */
254e55ed
SF
1491GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */
1492 /* on midQ entries */
1da177e4
LT
1493/*
1494 * Global counters, updated atomically
1495 */
1496GLOBAL_EXTERN atomic_t sesInfoAllocCount;
1497GLOBAL_EXTERN atomic_t tconInfoAllocCount;
1498GLOBAL_EXTERN atomic_t tcpSesAllocCount;
1499GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
1500GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
1501
aaa9bbe0 1502/* Various Debug counters */
4498eed5
SF
1503GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
1504#ifdef CONFIG_CIFS_STATS2
1505GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
1506GLOBAL_EXTERN atomic_t totSmBufAllocCount;
1507#endif
1508GLOBAL_EXTERN atomic_t smBufAllocCount;
1da177e4
LT
1509GLOBAL_EXTERN atomic_t midCount;
1510
1511/* Misc globals */
5e500ed1 1512GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */
1da177e4 1513GLOBAL_EXTERN unsigned int lookupCacheEnabled;
04912d6a 1514GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent
1da177e4 1515 with more secure ntlmssp2 challenge/resp */
1da177e4
LT
1516GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
1517GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
1518GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */
1519GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
1520GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */
1521GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
1522
21fed0d5 1523#ifdef CONFIG_CIFS_ACL
4d79dba0
SP
1524GLOBAL_EXTERN struct rb_root uidtree;
1525GLOBAL_EXTERN struct rb_root gidtree;
1526GLOBAL_EXTERN spinlock_t siduidlock;
1527GLOBAL_EXTERN spinlock_t sidgidlock;
21fed0d5
SP
1528GLOBAL_EXTERN struct rb_root siduidtree;
1529GLOBAL_EXTERN struct rb_root sidgidtree;
1530GLOBAL_EXTERN spinlock_t uidsidlock;
1531GLOBAL_EXTERN spinlock_t gidsidlock;
1532#endif /* CONFIG_CIFS_ACL */
4d79dba0 1533
9b646972 1534void cifs_oplock_break(struct work_struct *work);
3b7433b8 1535
3bc303c2 1536extern const struct slow_work_ops cifs_oplock_break_ops;
da472fc8 1537extern struct workqueue_struct *cifsiod_wq;
abd2e44d 1538
2dc7e1c0
PS
1539extern mempool_t *cifs_mid_poolp;
1540
23db65f5
JL
1541/* Operations for different SMB versions */
1542#define SMB1_VERSION_STRING "1.0"
1543extern struct smb_version_operations smb1_operations;
1544extern struct smb_version_values smb1_values;
e4aa25e7 1545#define SMB20_VERSION_STRING "2.0"
53ef1016 1546extern struct smb_version_operations smb20_operations;
e4aa25e7 1547extern struct smb_version_values smb20_values;
1080ef75
SF
1548#define SMB21_VERSION_STRING "2.1"
1549extern struct smb_version_operations smb21_operations;
1550extern struct smb_version_values smb21_values;
e4aa25e7 1551#define SMB30_VERSION_STRING "3.0"
38107d45 1552extern struct smb_version_operations smb30_operations;
e4aa25e7 1553extern struct smb_version_values smb30_values;
20b6d8b4
SF
1554#define SMB302_VERSION_STRING "3.02"
1555/*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */
1556extern struct smb_version_values smb302_values;
abd2e44d 1557#endif /* _CIFS_GLOB_H */