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CommitLineData
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
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19#ifndef _CIFS_GLOB_H
20#define _CIFS_GLOB_H
21
1da177e4
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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
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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
adfeb3e0
SF
73/* echo interval in seconds */
74#define SMB_ECHO_INTERVAL_MIN 1
75#define SMB_ECHO_INTERVAL_MAX 600
76#define SMB_ECHO_INTERVAL_DEFAULT 60
9094fad1 77
141891f4
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78/*
79 * Default number of credits to keep available for SMB3.
80 * This value is chosen somewhat arbitrarily. The Windows client
81 * defaults to 128 credits, the Windows server allows clients up to
82 * 512 credits (or 8K for later versions), and the NetApp server
83 * does not limit clients at all. Choose a high enough default value
84 * such that the client shouldn't limit performance, but allow mount
85 * to override (until you approach 64K, where we limit credits to 65000
86 * to reduce possibility of seeing more server credit overflow bugs.
87 */
88#define SMB2_MAX_CREDITS_AVAILABLE 32000
89
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90#include "cifspdu.h"
91
1da177e4
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92#ifndef XATTR_DOS_ATTRIB
93#define XATTR_DOS_ATTRIB "user.DOSATTRIB"
94#endif
95
1da177e4
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96/*
97 * CIFS vfs client Status information (based on what we know.)
98 */
99
6c0f6218 100/* associated with each tcp and smb session */
1da177e4
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101enum statusEnum {
102 CifsNew = 0,
103 CifsGood,
104 CifsExiting,
fd88ce93
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105 CifsNeedReconnect,
106 CifsNeedNegotiate
1da177e4
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107};
108
109enum securityEnum {
515d82ff
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110 Unspecified = 0, /* not specified */
111 LANMAN, /* Legacy LANMAN auth */
3979877e 112 NTLM, /* Legacy NTLM012 auth with NTLM hash */
1da177e4 113 NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */
ac683924 114 RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */
c16fefa5 115 Kerberos, /* Kerberos via SPNEGO */
1da177e4
LT
116};
117
5f98ca9a 118struct session_key {
b609f06a 119 unsigned int len;
21e73393 120 char *response;
b609f06a
SF
121};
122
d2b91521
SP
123/* crypto security descriptor definition */
124struct sdesc {
125 struct shash_desc shash;
126 char ctx[];
127};
128
f7c5445a 129/* crypto hashing related structure/fields, not specific to a sec mech */
d2b91521
SP
130struct cifs_secmech {
131 struct crypto_shash *hmacmd5; /* hmac-md5 hash function */
132 struct crypto_shash *md5; /* md5 hash function */
3c1bf7e4 133 struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */
429b46f4 134 struct crypto_shash *cmacaes; /* block-cipher based MAC function */
d2b91521
SP
135 struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */
136 struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */
3c1bf7e4 137 struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */
429b46f4 138 struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */
d2b91521
SP
139};
140
d3686d54 141/* per smb session structure/fields */
d2b91521 142struct ntlmssp_auth {
5c234aa5 143 bool sesskey_per_smbsess; /* whether session key is per smb session */
d2b91521
SP
144 __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */
145 __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */
146 unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */
d3686d54 147 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */
d2b91521
SP
148};
149
442aa310
SF
150struct cifs_cred {
151 int uid;
152 int gid;
153 int mode;
154 int cecount;
155 struct cifs_sid osid;
156 struct cifs_sid gsid;
157 struct cifs_ntace *ntaces;
158 struct cifs_ace *aces;
159};
160
1da177e4
LT
161/*
162 *****************************************************************
163 * Except the CIFS PDUs themselves all the
164 * globally interesting structs should go here
165 *****************************************************************
166 */
167
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168/*
169 * A smb_rqst represents a complete request to be issued to a server. It's
170 * formed by a kvec array, followed by an array of pages. Page data is assumed
171 * to start at the beginning of the first page.
172 */
173struct smb_rqst {
174 struct kvec *rq_iov; /* array of kvecs */
175 unsigned int rq_nvec; /* number of kvecs in array */
176 struct page **rq_pages; /* pointer to array of page ptrs */
177 unsigned int rq_npages; /* number pages in array */
178 unsigned int rq_pagesz; /* page size to use */
179 unsigned int rq_tailsz; /* length of last page */
180};
181
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182enum smb_version {
183 Smb_1 = 1,
dd446b16 184 Smb_20,
1080ef75 185 Smb_21,
e4aa25e7 186 Smb_30,
20b6d8b4 187 Smb_302,
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188#ifdef CONFIG_CIFS_SMB311
189 Smb_311,
190#endif /* SMB311 */
191 Smb_version_err
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192};
193
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JL
194struct mid_q_entry;
195struct TCP_Server_Info;
55157dfb 196struct cifsFileInfo;
082d0642 197struct cifs_ses;
2e6e02ab 198struct cifs_tcon;
b669f33c 199struct dfs_info3_param;
1208ef1f 200struct cifs_fattr;
9224dfc2 201struct smb_vol;
fb1214e4 202struct cifs_fid;
fc9c5966 203struct cifs_readdata;
c9de5c80 204struct cifs_writedata;
f9c6e234 205struct cifs_io_parms;
92fc65a7 206struct cifs_search_info;
95a3f2f3 207struct cifsInodeInfo;
226730b4 208struct cifs_open_parms;
121b046a 209
23db65f5 210struct smb_version_operations {
121b046a
JL
211 int (*send_cancel)(struct TCP_Server_Info *, void *,
212 struct mid_q_entry *);
55157dfb 213 bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
082d0642 214 /* setup request: allocate mid, sign message */
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215 struct mid_q_entry *(*setup_request)(struct cifs_ses *,
216 struct smb_rqst *);
45740847 217 /* setup async request: allocate mid, sign message */
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218 struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *,
219 struct smb_rqst *);
082d0642
PS
220 /* check response: verify signature, map error */
221 int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *,
222 bool);
a891f0f8
PS
223 void (*add_credits)(struct TCP_Server_Info *, const unsigned int,
224 const int);
45275789 225 void (*set_credits)(struct TCP_Server_Info *, const int);
a891f0f8
PS
226 int * (*get_credits_field)(struct TCP_Server_Info *, const int);
227 unsigned int (*get_credits)(struct mid_q_entry *);
88257360 228 __u64 (*get_next_mid)(struct TCP_Server_Info *);
eb378711
PS
229 /* data offset from read response message */
230 unsigned int (*read_data_offset)(char *);
231 /* data length from read response message */
232 unsigned int (*read_data_length)(char *);
233 /* map smb to linux error */
234 int (*map_error)(char *, bool);
8aa26f3e
PS
235 /* find mid corresponding to the response message */
236 struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *);
237 void (*dump_detail)(void *);
44c58186
PS
238 void (*clear_stats)(struct cifs_tcon *);
239 void (*print_stats)(struct seq_file *m, struct cifs_tcon *);
769ee6a4 240 void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *);
8aa26f3e 241 /* verify the message */
373512ec 242 int (*check_message)(char *, unsigned int, struct TCP_Server_Info *);
8aa26f3e 243 bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
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SP
244 void (*downgrade_oplock)(struct TCP_Server_Info *,
245 struct cifsInodeInfo *, bool);
316cf94a
PS
246 /* process transaction2 response */
247 bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *,
248 char *, int);
286170aa
PS
249 /* check if we need to negotiate */
250 bool (*need_neg)(struct TCP_Server_Info *);
251 /* negotiate to the server */
252 int (*negotiate)(const unsigned int, struct cifs_ses *);
24985c53
PS
253 /* set negotiated write size */
254 unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *);
255 /* set negotiated read size */
256 unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *);
58c45c58
PS
257 /* setup smb sessionn */
258 int (*sess_setup)(const unsigned int, struct cifs_ses *,
259 const struct nls_table *);
260 /* close smb session */
261 int (*logoff)(const unsigned int, struct cifs_ses *);
2e6e02ab
PS
262 /* connect to a server share */
263 int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *,
264 struct cifs_tcon *, const struct nls_table *);
265 /* close tree connecion */
266 int (*tree_disconnect)(const unsigned int, struct cifs_tcon *);
b669f33c
PS
267 /* get DFS referrals */
268 int (*get_dfs_refer)(const unsigned int, struct cifs_ses *,
269 const char *, struct dfs_info3_param **,
270 unsigned int *, const struct nls_table *, int);
af4281dc
PS
271 /* informational QFS call */
272 void (*qfs_tcon)(const unsigned int, struct cifs_tcon *);
68889f26
PS
273 /* check if a path is accessible or not */
274 int (*is_path_accessible)(const unsigned int, struct cifs_tcon *,
275 struct cifs_sb_info *, const char *);
1208ef1f
PS
276 /* query path data from the server */
277 int (*query_path_info)(const unsigned int, struct cifs_tcon *,
278 struct cifs_sb_info *, const char *,
eb85d94b 279 FILE_ALL_INFO *, bool *, bool *);
4ad65044
PS
280 /* query file data from the server */
281 int (*query_file_info)(const unsigned int, struct cifs_tcon *,
282 struct cifs_fid *, FILE_ALL_INFO *);
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PS
283 /* get server index number */
284 int (*get_srv_inum)(const unsigned int, struct cifs_tcon *,
285 struct cifs_sb_info *, const char *,
286 u64 *uniqueid, FILE_ALL_INFO *);
d1433418
PS
287 /* set size by path */
288 int (*set_path_size)(const unsigned int, struct cifs_tcon *,
289 const char *, __u64, struct cifs_sb_info *, bool);
290 /* set size by file handle */
291 int (*set_file_size)(const unsigned int, struct cifs_tcon *,
292 struct cifsFileInfo *, __u64, bool);
6bdf6dbd
PS
293 /* set attributes */
294 int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *,
295 const unsigned int);
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SF
296 int (*set_compression)(const unsigned int, struct cifs_tcon *,
297 struct cifsFileInfo *);
f6d76178
PS
298 /* check if we can send an echo or nor */
299 bool (*can_echo)(struct TCP_Server_Info *);
300 /* send echo request */
301 int (*echo)(struct TCP_Server_Info *);
f436720e
PS
302 /* create directory */
303 int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *,
304 struct cifs_sb_info *);
305 /* set info on created directory */
306 void (*mkdir_setinfo)(struct inode *, const char *,
307 struct cifs_sb_info *, struct cifs_tcon *,
308 const unsigned int);
f958ca5d
PS
309 /* remove directory */
310 int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *,
311 struct cifs_sb_info *);
ed6875e0
PS
312 /* unlink file */
313 int (*unlink)(const unsigned int, struct cifs_tcon *, const char *,
314 struct cifs_sb_info *);
315 /* open, rename and delete file */
316 int (*rename_pending_delete)(const char *, struct dentry *,
317 const unsigned int);
8ceb9843
PS
318 /* send rename request */
319 int (*rename)(const unsigned int, struct cifs_tcon *, const char *,
320 const char *, struct cifs_sb_info *);
d6e906f1
SF
321 /* send create hardlink request */
322 int (*create_hardlink)(const unsigned int, struct cifs_tcon *,
323 const char *, const char *,
324 struct cifs_sb_info *);
b42bf888
PS
325 /* query symlink target */
326 int (*query_symlink)(const unsigned int, struct cifs_tcon *,
327 const char *, char **, struct cifs_sb_info *);
fb1214e4 328 /* open a file for non-posix mounts */
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PS
329 int (*open)(const unsigned int, struct cifs_open_parms *,
330 __u32 *, FILE_ALL_INFO *);
fb1214e4
PS
331 /* set fid protocol-specific info */
332 void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32);
0ff78a22 333 /* close a file */
760ad0ca
PS
334 void (*close)(const unsigned int, struct cifs_tcon *,
335 struct cifs_fid *);
1d8c4c00
PS
336 /* send a flush request to the server */
337 int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *);
fc9c5966
PS
338 /* async read from the server */
339 int (*async_readv)(struct cifs_readdata *);
c9de5c80 340 /* async write to the server */
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SF
341 int (*async_writev)(struct cifs_writedata *,
342 void (*release)(struct kref *));
f9c6e234 343 /* sync read from the server */
db8b631d 344 int (*sync_read)(const unsigned int, struct cifs_fid *,
f9c6e234
PS
345 struct cifs_io_parms *, unsigned int *, char **,
346 int *);
ba9ad725 347 /* sync write to the server */
db8b631d 348 int (*sync_write)(const unsigned int, struct cifs_fid *,
ba9ad725
PS
349 struct cifs_io_parms *, unsigned int *, struct kvec *,
350 unsigned long);
92fc65a7
PS
351 /* open dir, start readdir */
352 int (*query_dir_first)(const unsigned int, struct cifs_tcon *,
353 const char *, struct cifs_sb_info *,
354 struct cifs_fid *, __u16,
355 struct cifs_search_info *);
356 /* continue readdir */
357 int (*query_dir_next)(const unsigned int, struct cifs_tcon *,
358 struct cifs_fid *,
359 __u16, struct cifs_search_info *srch_inf);
360 /* close dir */
361 int (*close_dir)(const unsigned int, struct cifs_tcon *,
362 struct cifs_fid *);
363 /* calculate a size of SMB message */
364 unsigned int (*calc_smb_size)(void *);
2e44b288
PS
365 /* check for STATUS_PENDING and process it in a positive case */
366 bool (*is_status_pending)(char *, struct TCP_Server_Info *, int);
95a3f2f3
PS
367 /* send oplock break response */
368 int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *,
369 struct cifsInodeInfo *);
76ec5e33
PS
370 /* query remote filesystem */
371 int (*queryfs)(const unsigned int, struct cifs_tcon *,
372 struct kstatfs *);
d39a4f71
PS
373 /* send mandatory brlock to the server */
374 int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64,
375 __u64, __u32, int, int, bool);
376 /* unlock range of mandatory locks */
377 int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *,
378 const unsigned int);
379 /* push brlocks from the cache to the server */
380 int (*push_mand_locks)(struct cifsFileInfo *);
b8c32dbb 381 /* get lease key of the inode */
a41a28bd 382 void (*get_lease_key)(struct inode *, struct cifs_fid *);
b8c32dbb 383 /* set lease key of the inode */
a41a28bd 384 void (*set_lease_key)(struct inode *, struct cifs_fid *);
b8c32dbb 385 /* generate new lease key */
a41a28bd 386 void (*new_lease_key)(struct cifs_fid *);
32811d24 387 int (*generate_signingkey)(struct cifs_ses *);
53ef1016 388 int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
b3152e2c
SF
389 int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon,
390 struct cifsFileInfo *src_file);
834170c8
SF
391 int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon,
392 struct cifsFileInfo *src_file, void __user *);
b5be1a1c
SP
393 int (*query_mf_symlink)(unsigned int, struct cifs_tcon *,
394 struct cifs_sb_info *, const unsigned char *,
395 char *, unsigned int *);
cbb0aba6
SP
396 int (*create_mf_symlink)(unsigned int, struct cifs_tcon *,
397 struct cifs_sb_info *, const unsigned char *,
398 char *, unsigned int *);
53ef1016
PS
399 /* if we can do cache read operations */
400 bool (*is_read_op)(__u32);
401 /* set oplock level for the inode */
42873b0a
PS
402 void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int,
403 bool *);
a41a28bd
PS
404 /* create lease context buffer for CREATE request */
405 char * (*create_lease_buf)(u8 *, u8);
42873b0a
PS
406 /* parse lease context buffer and return oplock/epoch info */
407 __u8 (*parse_lease_buf)(void *, unsigned int *);
41c1358e
SF
408 int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file,
409 struct cifsFileInfo *target_file, u64 src_off, u64 len,
410 u64 dest_off);
02b16665
SF
411 int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src,
412 struct cifsFileInfo *target_file, u64 src_off, u64 len,
413 u64 dest_off);
ff1c038a 414 int (*validate_negotiate)(const unsigned int, struct cifs_tcon *);
666753c3
SF
415 ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *,
416 const unsigned char *, const unsigned char *, char *,
417 size_t, const struct nls_table *, int);
418 int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *,
419 const char *, const void *, const __u16,
420 const struct nls_table *, int);
83e3bc23
SF
421 struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *,
422 const char *, u32 *);
42eacf9e
SF
423 struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *,
424 const struct cifs_fid *, u32 *);
83e3bc23
SF
425 int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *,
426 int);
7f6c5008
PS
427 /* writepages retry size */
428 unsigned int (*wp_retry_size)(struct inode *);
cb7e9eab
PS
429 /* get mtu credits */
430 int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int,
431 unsigned int *, unsigned int *);
52755808
PS
432 /* check if we need to issue closedir */
433 bool (*dir_needs_close)(struct cifsFileInfo *);
31742c5a
SF
434 long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t,
435 loff_t);
23db65f5
JL
436};
437
438struct smb_version_values {
439 char *version_string;
e4aa25e7
SF
440 __u16 protocol_id;
441 __u32 req_capabilities;
106dc538
PS
442 __u32 large_lock_type;
443 __u32 exclusive_lock_type;
444 __u32 shared_lock_type;
445 __u32 unlock_lock_type;
1887f601
PS
446 size_t header_size;
447 size_t max_header_size;
eb378711 448 size_t read_rsp_size;
2dc7e1c0 449 __le16 lock_cmd;
29e20f9c
PS
450 unsigned int cap_unix;
451 unsigned int cap_nt_find;
452 unsigned int cap_large_files;
50285882
JL
453 __u16 signing_enabled;
454 __u16 signing_required;
a41a28bd 455 size_t create_lease_size;
23db65f5
JL
456};
457
1887f601
PS
458#define HEADER_SIZE(server) (server->vals->header_size)
459#define MAX_HEADER_SIZE(server) (server->vals->max_header_size)
460
f87d39d9
SF
461struct smb_vol {
462 char *username;
463 char *password;
464 char *domainname;
465 char *UNC;
f87d39d9
SF
466 char *iocharset; /* local code page for mapping to and from Unicode */
467 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
468 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
3da46565
EB
469 kuid_t cred_uid;
470 kuid_t linux_uid;
471 kgid_t linux_gid;
472 kuid_t backupuid;
473 kgid_t backupgid;
5206efd6
AV
474 umode_t file_mode;
475 umode_t dir_mode;
1e3cc57e
JL
476 enum securityEnum sectype; /* sectype requested via mnt opts */
477 bool sign; /* was signing requested via mnt opts? */
f87d39d9
SF
478 bool retry:1;
479 bool intr:1;
480 bool setuids:1;
95932655 481 bool setuidfromacl:1;
f87d39d9
SF
482 bool override_uid:1;
483 bool override_gid:1;
484 bool dynperm:1;
485 bool noperm:1;
486 bool no_psx_acl:1; /* set if posix acl support should be disabled */
487 bool cifs_acl:1;
3d3ea8e6
SP
488 bool backupuid_specified; /* mount option backupuid is specified */
489 bool backupgid_specified; /* mount option backupgid is specified */
f87d39d9
SF
490 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
491 bool server_ino:1; /* use inode numbers from server ie UniqueId */
492 bool direct_io:1;
493 bool strict_io:1; /* strict cache behavior */
494 bool remap:1; /* set to remap seven reserved chars in filenames */
2baa2682 495 bool sfu_remap:1; /* remap seven reserved chars ala SFU */
f87d39d9
SF
496 bool posix_paths:1; /* unset to not ask for posix pathnames. */
497 bool no_linux_ext:1;
498 bool sfu_emul:1;
499 bool nullauth:1; /* attempt to authenticate with null user */
500 bool nocase:1; /* request case insensitive filenames */
501 bool nobrl:1; /* disable sending byte range locks to srv */
502 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */
503 bool seal:1; /* request transport encryption on share */
504 bool nodfs:1; /* Do not request DFS, even if available */
505 bool local_lease:1; /* check leases only on local system, not remote */
506 bool noblocksnd:1;
507 bool noautotune:1;
508 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
509 bool fsc:1; /* enable fscache */
510 bool mfsymlinks:1; /* use Minshall+French Symlinks */
511 bool multiuser:1;
d4ffff1f 512 bool rwpidforward:1; /* pid forward for read/write operations */
b2a30774
SF
513 bool nosharesock:1;
514 bool persistent:1;
515 bool nopersistent:1;
592fafe6 516 bool resilient:1; /* noresilient not required since not fored for CA */
f87d39d9
SF
517 unsigned int rsize;
518 unsigned int wsize;
519 bool sockopt_tcp_nodelay:1;
f87d39d9 520 unsigned long actimeo; /* attribute cache timeout (jiffies) */
23db65f5
JL
521 struct smb_version_operations *ops;
522 struct smb_version_values *vals;
f87d39d9 523 char *prepath;
b979aaa1 524 struct sockaddr_storage dstaddr; /* destination address */
f87d39d9
SF
525 struct sockaddr_storage srcaddr; /* allow binding to a local IP */
526 struct nls_table *local_nls;
adfeb3e0 527 unsigned int echo_interval; /* echo interval in secs */
141891f4 528 unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */
f87d39d9
SF
529};
530
25c7f41e
PS
531#define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
532 CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
533 CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
2baa2682 534 CIFS_MOUNT_MAP_SFM_CHR | \
25c7f41e
PS
535 CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \
536 CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \
537 CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \
538 CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
539 CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
3d3ea8e6
SP
540 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \
541 CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID)
25c7f41e
PS
542
543#define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \
544 MS_NODEV | MS_SYNCHRONOUS)
545
546struct cifs_mnt_data {
547 struct cifs_sb_info *cifs_sb;
548 struct smb_vol *vol;
549 int flags;
550};
551
792af7b0
PS
552static inline unsigned int
553get_rfc1002_length(void *buf)
554{
dca1c8d1 555 return be32_to_cpu(*((__be32 *)buf)) & 0xffffff;
792af7b0
PS
556}
557
ec2e4523
PS
558static inline void
559inc_rfc1001_len(void *buf, int count)
560{
561 be32_add_cpu((__be32 *)buf, count);
562}
563
1da177e4 564struct TCP_Server_Info {
3b795210
SF
565 struct list_head tcp_ses_list;
566 struct list_head smb_ses_list;
e7ddee90 567 int srv_count; /* reference counter */
a10faeb2 568 /* 15 character server name + 0x20 16th byte indicating type = srv */
8ecaf67a 569 char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
23db65f5
JL
570 struct smb_version_operations *ops;
571 struct smb_version_values *vals;
c3dccf48 572 enum statusEnum tcpStatus; /* what we think the status is */
c359cf3c 573 char *hostname; /* hostname portion of UNC string */
1da177e4 574 struct socket *ssocket;
a9f1b85e 575 struct sockaddr_storage dstaddr;
3eb9a889 576 struct sockaddr_storage srcaddr; /* locally bind to this IP */
f1d0c998
RL
577#ifdef CONFIG_NET_NS
578 struct net *net;
579#endif
d38d8c74 580 wait_queue_head_t response_q;
1da177e4
LT
581 wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
582 struct list_head pending_mid_q;
edf1ae40
SF
583 bool noblocksnd; /* use blocking sendmsg */
584 bool noautotune; /* do not autotune send buf sizes */
6a5fa236 585 bool tcp_nodelay;
141891f4
SF
586 unsigned int credits; /* send no more requests at once */
587 unsigned int max_credits; /* can override large 32000 default at mnt */
fc40f9cf 588 unsigned int in_flight; /* number of requests on the wire to server */
2d86dbc9 589 spinlock_t req_lock; /* protect the two values above */
72ca545b 590 struct mutex srv_mutex;
1da177e4
LT
591 struct task_struct *tsk;
592 char server_GUID[16];
286170aa 593 __u16 sec_mode;
38d77c50 594 bool sign; /* is signing enabled on this connection? */
c3dccf48 595 bool session_estab; /* mark when very first sess is established */
28ea5290
PS
596#ifdef CONFIG_CIFS_SMB2
597 int echo_credits; /* echo reserved slots */
598 int oplock_credits; /* oplock break reserved slots */
599 bool echoes:1; /* enable echoes */
39552ea8 600 __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */
28ea5290 601#endif
c3dccf48 602 u16 dialect; /* dialect index that server chose */
10b9b98e 603 bool oplocks:1; /* enable oplocks */
1da177e4
LT
604 unsigned int maxReq; /* Clients should submit no more */
605 /* than maxReq distinct unanswered SMBs to the server when using */
606 /* multiplexed reads or writes */
607 unsigned int maxBuf; /* maxBuf specifies the maximum */
608 /* message size the server can send or receive for non-raw SMBs */
7e90d705
SF
609 /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */
610 /* when socket is setup (and during reconnect) before NegProt sent */
eca6acf9 611 unsigned int max_rw; /* maxRw specifies the maximum */
1da177e4
LT
612 /* message size the server can send or receive for */
613 /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
29e20f9c 614 unsigned int capabilities; /* selective disabling of caps by smb sess */
de7ed55d 615 int timeAdj; /* Adjust for difference in server time zone in sec */
243d04b6 616 __u64 CurrentMid; /* multiplex id - rotating counter */
d3ba50b1 617 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
a10faeb2 618 /* 16th byte of RFC1001 workstation name is always null */
8ecaf67a 619 char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
a0f8b4fb 620 __u32 sequence_number; /* for signing, protected by srv_mutex */
5f98ca9a 621 struct session_key session_key;
3a5ff61c 622 unsigned long lstrp; /* when we got last response from this server */
d2b91521 623 struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */
e598d1d8
JL
624#define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */
625#define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */
626#define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */
627 char negflavor; /* NEGOTIATE response flavor */
26efa0ba 628 /* extended security flavors that server supports */
c3dccf48
JL
629 bool sec_ntlmssp; /* supports NTLMSSP */
630 bool sec_kerberosu2u; /* supports U2U Kerberos */
26efa0ba
JL
631 bool sec_kerberos; /* supports plain Kerberos */
632 bool sec_mskerberos; /* supports legacy MS Kerberos */
2a37ef94 633 bool large_buf; /* is current buffer large? */
c74093b6 634 struct delayed_work echo; /* echo ping workqueue job */
2a37ef94
JL
635 char *smallbuf; /* pointer to current "small" buffer */
636 char *bigbuf; /* pointer to current "big" buffer */
637 unsigned int total_read; /* total amount of data read in this pass */
488f1d2d
SJ
638#ifdef CONFIG_CIFS_FSCACHE
639 struct fscache_cookie *fscache; /* client index cache cookie */
640#endif
c3dccf48 641#ifdef CONFIG_CIFS_STATS2
789e6661 642 atomic_t in_send; /* requests trying to send */
c3dccf48
JL
643 atomic_t num_waiters; /* blocked waiting to get in sendrecv */
644#endif
ec2e4523
PS
645#ifdef CONFIG_CIFS_SMB2
646 unsigned int max_read;
647 unsigned int max_write;
373512ec 648 __u8 preauth_hash[512];
ec2e4523 649#endif /* CONFIG_CIFS_SMB2 */
adfeb3e0 650 unsigned long echo_interval;
1da177e4
LT
651};
652
fc40f9cf
PS
653static inline unsigned int
654in_flight(struct TCP_Server_Info *server)
655{
656 unsigned int num;
657 spin_lock(&server->req_lock);
658 num = server->in_flight;
659 spin_unlock(&server->req_lock);
660 return num;
661}
662
2d86dbc9 663static inline bool
bc205ed1 664has_credits(struct TCP_Server_Info *server, int *credits)
fc40f9cf 665{
2d86dbc9 666 int num;
fc40f9cf 667 spin_lock(&server->req_lock);
bc205ed1 668 num = *credits;
fc40f9cf 669 spin_unlock(&server->req_lock);
2d86dbc9 670 return num > 0;
fc40f9cf
PS
671}
672
45275789 673static inline void
a891f0f8
PS
674add_credits(struct TCP_Server_Info *server, const unsigned int add,
675 const int optype)
45275789 676{
a891f0f8 677 server->ops->add_credits(server, add, optype);
45275789
PS
678}
679
cb7e9eab
PS
680static inline void
681add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add,
682 const int optype)
683{
684 if (add) {
685 server->ops->add_credits(server, add, optype);
686 wake_up(&server->request_q);
687 }
688}
689
45275789
PS
690static inline void
691set_credits(struct TCP_Server_Info *server, const int val)
692{
693 server->ops->set_credits(server, val);
694}
695
9235d098 696static inline __le64
3d378d3f 697get_next_mid64(struct TCP_Server_Info *server)
88257360 698{
9235d098 699 return cpu_to_le64(server->ops->get_next_mid(server));
88257360
PS
700}
701
3d378d3f
TG
702static inline __le16
703get_next_mid(struct TCP_Server_Info *server)
704{
9235d098 705 __u16 mid = server->ops->get_next_mid(server);
3d378d3f
TG
706 /*
707 * The value in the SMB header should be little endian for easy
708 * on-the-wire decoding.
709 */
710 return cpu_to_le16(mid);
711}
712
713static inline __u16
714get_mid(const struct smb_hdr *smb)
715{
716 return le16_to_cpu(smb->Mid);
717}
718
719static inline bool
720compare_mid(__u16 mid, const struct smb_hdr *smb)
721{
722 return mid == le16_to_cpu(smb->Mid);
723}
724
24985c53
PS
725/*
726 * When the server supports very large reads and writes via POSIX extensions,
727 * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not
728 * including the RFC1001 length.
729 *
730 * Note that this might make for "interesting" allocation problems during
731 * writeback however as we have to allocate an array of pointers for the
ea1754a0 732 * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096.
24985c53
PS
733 *
734 * For reads, there is a similar problem as we need to allocate an array
735 * of kvecs to handle the receive, though that should only need to be done
736 * once.
737 */
738#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4)
739#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4)
740
741/*
742 * When the server doesn't allow large posix writes, only allow a rsize/wsize
743 * of 2^17-1 minus the size of the call header. That allows for a read or
744 * write up to the maximum size described by RFC1002.
745 */
746#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)
747#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4)
748
749/*
750 * The default wsize is 1M. find_get_pages seems to return a maximum of 256
ea1754a0 751 * pages in a single call. With PAGE_SIZE == 4k, this means we can fill
24985c53
PS
752 * a single wsize request with a single call.
753 */
754#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
755
756/*
757 * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
758 * those values when posix extensions aren't in force. In actuality here, we
759 * use 65536 to allow for a write that is a multiple of 4k. Most servers seem
760 * to be ok with the extra byte even though Windows doesn't send writes that
761 * are that large.
762 *
763 * Citation:
764 *
765 * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
766 */
767#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
768#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
769
f1d0c998
RL
770/*
771 * Macros to allow the TCP_Server_Info->net field and related code to drop out
772 * when CONFIG_NET_NS isn't set.
773 */
774
775#ifdef CONFIG_NET_NS
776
777static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
778{
779 return srv->net;
780}
781
782static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
783{
784 srv->net = net;
785}
786
787#else
788
789static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
790{
791 return &init_net;
792}
793
794static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
795{
796}
797
798#endif
799
1da177e4
LT
800/*
801 * Session structure. One of these for each uid session with a particular host
802 */
96daf2b0 803struct cifs_ses {
14fbf50d 804 struct list_head smb_ses_list;
3b795210 805 struct list_head tcon_list;
d7b619cf 806 struct mutex session_mutex;
1da177e4 807 struct TCP_Server_Info *server; /* pointer to server info */
14fbf50d 808 int ses_count; /* reference counter */
1da177e4 809 enum statusEnum status;
750d1151 810 unsigned overrideSecFlg; /* if non-zero override global sec flags */
1da177e4 811 __u16 ipc_tid; /* special tid for connection to IPC share */
ad009ac9
SF
812 char *serverOS; /* name of operating system underlying server */
813 char *serverNOS; /* name of network operating system of server */
1da177e4 814 char *serverDomain; /* security realm of server */
286170aa 815 __u64 Suid; /* remote smb uid */
64ed39dd
EB
816 kuid_t linux_uid; /* overriding owner of files on the mount */
817 kuid_t cred_uid; /* owner of credentials */
29e20f9c 818 unsigned int capabilities;
d38d8c74 819 char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
ad009ac9 820 TCP names - will ipv6 and sctp addresses fit? */
34c87901
SF
821 char *user_name; /* must not be null except during init of sess
822 and after mount option parsing we fill it */
d38d8c74
SF
823 char *domainName;
824 char *password;
5d0d2882 825 struct session_key auth_key;
d3686d54 826 struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */
28e11bd8
JL
827 enum securityEnum sectype; /* what security flavor was specified? */
828 bool sign; /* is signing required? */
3b795210 829 bool need_reconnect:1; /* connection reset, uid now invalid */
5478f9ba
PS
830#ifdef CONFIG_CIFS_SMB2
831 __u16 session_flags;
373512ec
SF
832 __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
833 __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE];
834 __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE];
835 __u8 preauth_hash[512];
5478f9ba 836#endif /* CONFIG_CIFS_SMB2 */
1da177e4 837};
233839b1 838
29e20f9c
PS
839static inline bool
840cap_unix(struct cifs_ses *ses)
841{
842 return ses->server->vals->cap_unix & ses->capabilities;
843}
844
1da177e4
LT
845/*
846 * there is one of these for each connection to a resource on a particular
d38d8c74 847 * session
1da177e4 848 */
96daf2b0 849struct cifs_tcon {
f1987b44
JL
850 struct list_head tcon_list;
851 int tc_count;
1da177e4 852 struct list_head openFileList;
3afca265 853 spinlock_t open_file_lock; /* protects list above */
96daf2b0 854 struct cifs_ses *ses; /* pointer to session associated with */
254e55ed 855 char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
1da177e4 856 char *nativeFileSystem;
00e485b0 857 char *password; /* for share-level security */
faaf946a 858 __u32 tid; /* The 4 byte tree id */
1da177e4
LT
859 __u16 Flags; /* optional support bits */
860 enum statusEnum tidStatus;
1da177e4
LT
861#ifdef CONFIG_CIFS_STATS
862 atomic_t num_smbs_sent;
44c58186
PS
863 union {
864 struct {
865 atomic_t num_writes;
866 atomic_t num_reads;
867 atomic_t num_flushes;
868 atomic_t num_oplock_brks;
869 atomic_t num_opens;
870 atomic_t num_closes;
871 atomic_t num_deletes;
872 atomic_t num_mkdirs;
873 atomic_t num_posixopens;
874 atomic_t num_posixmkdirs;
875 atomic_t num_rmdirs;
876 atomic_t num_renames;
877 atomic_t num_t2renames;
878 atomic_t num_ffirst;
879 atomic_t num_fnext;
880 atomic_t num_fclose;
881 atomic_t num_hardlinks;
882 atomic_t num_symlinks;
883 atomic_t num_locks;
884 atomic_t num_acl_get;
885 atomic_t num_acl_set;
886 } cifs_stats;
d60622eb
PS
887#ifdef CONFIG_CIFS_SMB2
888 struct {
889 atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS];
890 atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS];
891 } smb2_stats;
892#endif /* CONFIG_CIFS_SMB2 */
44c58186 893 } stats;
a5a2b489
SF
894#ifdef CONFIG_CIFS_STATS2
895 unsigned long long time_writes;
896 unsigned long long time_reads;
897 unsigned long long time_opens;
898 unsigned long long time_deletes;
899 unsigned long long time_closes;
900 unsigned long long time_mkdirs;
901 unsigned long long time_rmdirs;
902 unsigned long long time_renames;
903 unsigned long long time_t2renames;
904 unsigned long long time_ffirst;
905 unsigned long long time_fnext;
906 unsigned long long time_fclose;
907#endif /* CONFIG_CIFS_STATS2 */
1da177e4
LT
908 __u64 bytes_read;
909 __u64 bytes_written;
3afca265 910 spinlock_t stat_lock; /* protects the two fields above */
a5a2b489 911#endif /* CONFIG_CIFS_STATS */
1da177e4 912 FILE_SYSTEM_DEVICE_INFO fsDevInfo;
254e55ed 913 FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
1da177e4 914 FILE_SYSTEM_UNIX_INFO fsUnixInfo;
4b18f2a9
SF
915 bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */
916 bool retry:1;
917 bool nocase:1;
95b1cb90 918 bool seal:1; /* transport encryption for this mounted share */
4b18f2a9 919 bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
c18c842b 920 for this mount even if server would support */
84210e91 921 bool local_lease:1; /* check leases (only) on local system not remote */
64cc2c63 922 bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */
3d1a3745 923 bool broken_sparse_sup; /* if server or share does not support sparse */
3b795210 924 bool need_reconnect:1; /* connection reset, tid now invalid */
592fafe6 925 bool use_resilient:1; /* use resilient instead of durable handles */
b618f001 926 bool use_persistent:1; /* use persistent instead of durable handles */
faaf946a
PS
927#ifdef CONFIG_CIFS_SMB2
928 bool print:1; /* set if connection to printer share */
929 bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */
769ee6a4 930 __le32 capabilities;
faaf946a
PS
931 __u32 share_flags;
932 __u32 maximal_access;
933 __u32 vol_serial_number;
934 __le64 vol_create_time;
af6a12ea
SF
935 __u32 ss_flags; /* sector size flags */
936 __u32 perf_sector_size; /* best sector size for perf */
de9f68df
SF
937 __u32 max_chunks;
938 __u32 max_bytes_chunk;
939 __u32 max_bytes_copy;
faaf946a 940#endif /* CONFIG_CIFS_SMB2 */
d03382ce
SJ
941#ifdef CONFIG_CIFS_FSCACHE
942 u64 resource_id; /* server resource id */
943 struct fscache_cookie *fscache; /* cookie for share */
944#endif
233839b1 945 struct list_head pending_opens; /* list of incomplete opens */
c18c842b 946 /* BB add field for back pointer to sb struct(s)? */
1da177e4
LT
947};
948
7ffec372
JL
949/*
950 * This is a refcounted and timestamped container for a tcon pointer. The
951 * container holds a tcon reference. It is considered safe to free one of
952 * these when the tl_count goes to 0. The tl_time is the time of the last
953 * "get" on the container.
954 */
955struct tcon_link {
b647c35f 956 struct rb_node tl_rbnode;
6d4a0832 957 kuid_t tl_uid;
9d002df4
JL
958 unsigned long tl_flags;
959#define TCON_LINK_MASTER 0
960#define TCON_LINK_PENDING 1
961#define TCON_LINK_IN_TREE 2
962 unsigned long tl_time;
963 atomic_t tl_count;
96daf2b0 964 struct cifs_tcon *tl_tcon;
7ffec372
JL
965};
966
9d002df4 967extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb);
7ffec372 968
96daf2b0 969static inline struct cifs_tcon *
7ffec372
JL
970tlink_tcon(struct tcon_link *tlink)
971{
9d002df4 972 return tlink->tl_tcon;
7ffec372
JL
973}
974
9d002df4 975extern void cifs_put_tlink(struct tcon_link *tlink);
7ffec372 976
13cfb733
JL
977static inline struct tcon_link *
978cifs_get_tlink(struct tcon_link *tlink)
979{
9d002df4
JL
980 if (tlink && !IS_ERR(tlink))
981 atomic_inc(&tlink->tl_count);
13cfb733
JL
982 return tlink;
983}
984
7ffec372 985/* This function is always expected to succeed */
96daf2b0 986extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
7ffec372 987
233839b1
PS
988#define CIFS_OPLOCK_NO_CHANGE 0xfe
989
990struct cifs_pending_open {
991 struct list_head olist;
992 struct tcon_link *tlink;
993 __u8 lease_key[16];
994 __u32 oplock;
995};
996
1da177e4 997/*
7ee1af76
JA
998 * This info hangs off the cifsFileInfo structure, pointed to by llist.
999 * This is used to track byte stream locks on the file
1da177e4
LT
1000 */
1001struct cifsLockInfo {
7ee1af76 1002 struct list_head llist; /* pointer to next cifsLockInfo */
85160e03
PS
1003 struct list_head blist; /* pointer to locks blocked on this */
1004 wait_queue_head_t block_q;
7ee1af76
JA
1005 __u64 offset;
1006 __u64 length;
03776f45 1007 __u32 pid;
04a6aa8a 1008 __u32 type;
1da177e4
LT
1009};
1010
1011/*
1012 * One of these for each open instance of a file
1013 */
1014struct cifs_search_info {
1015 loff_t index_of_last_entry;
1016 __u16 entries_in_buffer;
1017 __u16 info_level;
1018 __u32 resume_key;
d38d8c74
SF
1019 char *ntwrk_buf_start;
1020 char *srch_entries_start;
0752f152 1021 char *last_entry;
eaf35b1e 1022 const char *presume_name;
1da177e4 1023 unsigned int resume_name_len;
4b18f2a9
SF
1024 bool endOfSearch:1;
1025 bool emptyDir:1;
1026 bool unicode:1;
1027 bool smallBuf:1; /* so we know which buf_release function to call */
1da177e4
LT
1028};
1029
226730b4
PS
1030struct cifs_open_parms {
1031 struct cifs_tcon *tcon;
1032 struct cifs_sb_info *cifs_sb;
1033 int disposition;
1034 int desired_access;
1035 int create_options;
1036 const char *path;
1037 struct cifs_fid *fid;
9cbc0b73 1038 bool reconnect:1;
226730b4
PS
1039};
1040
4b4de76e
PS
1041struct cifs_fid {
1042 __u16 netfid;
f0df737e
PS
1043#ifdef CONFIG_CIFS_SMB2
1044 __u64 persistent_fid; /* persist file id for smb2 */
1045 __u64 volatile_fid; /* volatile file id for smb2 */
b8c32dbb 1046 __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */
b56eae4d 1047 __u8 create_guid[16];
f0df737e 1048#endif
233839b1 1049 struct cifs_pending_open *pending_open;
42873b0a
PS
1050 unsigned int epoch;
1051 bool purge_cache;
4b4de76e
PS
1052};
1053
f45d3416
PS
1054struct cifs_fid_locks {
1055 struct list_head llist;
1056 struct cifsFileInfo *cfile; /* fid that owns locks */
1057 struct list_head locks; /* locks held by fid above */
1058};
1059
1da177e4 1060struct cifsFileInfo {
3afca265 1061 /* following two lists are protected by tcon->open_file_lock */
1da177e4
LT
1062 struct list_head tlist; /* pointer to next fid owned by tcon */
1063 struct list_head flist; /* next fid (file instance) for this inode */
3afca265 1064 /* lock list below protected by cifsi->lock_sem */
f45d3416 1065 struct cifs_fid_locks *llist; /* brlocks held by this fid */
fef59fd7 1066 kuid_t uid; /* allows finding which FileInfo structure */
1da177e4 1067 __u32 pid; /* process id who opened file */
4b4de76e 1068 struct cifs_fid fid; /* file id from remote */
f2cca6a7 1069 struct list_head rlist; /* reconnect list */
1da177e4
LT
1070 /* BB add lock scope info here if needed */ ;
1071 /* lock scope id (0 if none) */
a5e18bc3 1072 struct dentry *dentry;
13cfb733 1073 struct tcon_link *tlink;
3afca265 1074 unsigned int f_flags;
4b18f2a9 1075 bool invalidHandle:1; /* file closed via session abend */
3bc303c2 1076 bool oplock_break_cancelled:1;
3afca265
SF
1077 int count;
1078 spinlock_t file_info_lock; /* protects four flag/count fields above */
a6ce4932 1079 struct mutex fh_mutex; /* prevents reopen race after dead ses*/
1da177e4 1080 struct cifs_search_info srch_inf;
9b646972 1081 struct work_struct oplock_break; /* work for oplock breaks */
1da177e4
LT
1082};
1083
fa2989f4
PS
1084struct cifs_io_parms {
1085 __u16 netfid;
09a4707e
PS
1086#ifdef CONFIG_CIFS_SMB2
1087 __u64 persistent_fid; /* persist file id for smb2 */
1088 __u64 volatile_fid; /* volatile file id for smb2 */
1089#endif
fa2989f4
PS
1090 __u32 pid;
1091 __u64 offset;
1092 unsigned int length;
96daf2b0 1093 struct cifs_tcon *tcon;
fa2989f4
PS
1094};
1095
09a4707e
PS
1096struct cifs_readdata;
1097
1098/* asynchronous read support */
1099struct cifs_readdata {
1100 struct kref refcount;
1101 struct list_head list;
1102 struct completion done;
1103 struct cifsFileInfo *cfile;
1104 struct address_space *mapping;
1105 __u64 offset;
1106 unsigned int bytes;
34a54d61 1107 unsigned int got_bytes;
09a4707e
PS
1108 pid_t pid;
1109 int result;
09a4707e 1110 struct work_struct work;
8321fec4
JL
1111 int (*read_into_pages)(struct TCP_Server_Info *server,
1112 struct cifs_readdata *rdata,
1113 unsigned int len);
5819575e 1114 struct kvec iov;
8321fec4
JL
1115 unsigned int pagesz;
1116 unsigned int tailsz;
bed9da02 1117 unsigned int credits;
c5fab6f4
JL
1118 unsigned int nr_pages;
1119 struct page *pages[];
09a4707e
PS
1120};
1121
33319141
PS
1122struct cifs_writedata;
1123
1124/* asynchronous write support */
1125struct cifs_writedata {
1126 struct kref refcount;
1127 struct list_head list;
1128 struct completion done;
1129 enum writeback_sync_modes sync_mode;
1130 struct work_struct work;
1131 struct cifsFileInfo *cfile;
1132 __u64 offset;
1133 pid_t pid;
1134 unsigned int bytes;
1135 int result;
eddb079d
JL
1136 unsigned int pagesz;
1137 unsigned int tailsz;
cb7e9eab 1138 unsigned int credits;
33319141 1139 unsigned int nr_pages;
26c8f0d6 1140 struct page *pages[];
33319141
PS
1141};
1142
5f6dbc9e
JL
1143/*
1144 * Take a reference on the file private data. Must be called with
3afca265 1145 * cfile->file_info_lock held.
5f6dbc9e 1146 */
764a1b1a
JL
1147static inline void
1148cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file)
6ab409b5 1149{
5f6dbc9e 1150 ++cifs_file->count;
6ab409b5
DK
1151}
1152
764a1b1a 1153struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file);
b33879aa 1154void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
6ab409b5 1155
18cceb6a
PS
1156#define CIFS_CACHE_READ_FLG 1
1157#define CIFS_CACHE_HANDLE_FLG 2
42873b0a 1158#define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG)
18cceb6a 1159#define CIFS_CACHE_WRITE_FLG 4
42873b0a
PS
1160#define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG)
1161#define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG)
18cceb6a
PS
1162
1163#define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG)
53ef1016 1164#define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG)
18cceb6a
PS
1165#define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG)
1166
1da177e4
LT
1167/*
1168 * One of these for each file inode
1169 */
1170
1171struct cifsInodeInfo {
d59dad2b 1172 bool can_cache_brlcks;
f45d3416 1173 struct list_head llist; /* locks helb by this inode */
1b4b55a1 1174 struct rw_semaphore lock_sem; /* protect the fields above */
d38d8c74 1175 /* BB add in lists for dirty pages i.e. write caching info for oplock */
1da177e4 1176 struct list_head openFileList;
1da177e4 1177 __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
18cceb6a 1178 unsigned int oplock; /* oplock/lease level we have */
42873b0a 1179 unsigned int epoch; /* used to track lease state changes */
c11f1df5
SP
1180#define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */
1181#define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */
1182#define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */
aff8d5ca
JL
1183#define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */
1184#define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */
4f73c7d3 1185#define CIFS_INO_LOCK (5) /* lock bit for synchronization */
aff8d5ca 1186 unsigned long flags;
c11f1df5
SP
1187 spinlock_t writers_lock;
1188 unsigned int writers; /* Number of writers on this inode */
aae62fdb 1189 unsigned long time; /* jiffies of last update of inode */
597b027f 1190 u64 server_eof; /* current file size on server -- protected by i_lock */
cc0bad75 1191 u64 uniqueid; /* server inode number */
20054bd6 1192 u64 createtime; /* creation time on server */
b8c32dbb
PS
1193#ifdef CONFIG_CIFS_SMB2
1194 __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */
1195#endif
9451a9a5
SJ
1196#ifdef CONFIG_CIFS_FSCACHE
1197 struct fscache_cookie *fscache;
1198#endif
1da177e4
LT
1199 struct inode vfs_inode;
1200};
1201
1202static inline struct cifsInodeInfo *
1203CIFS_I(struct inode *inode)
1204{
1205 return container_of(inode, struct cifsInodeInfo, vfs_inode);
1206}
1207
1208static inline struct cifs_sb_info *
1209CIFS_SB(struct super_block *sb)
1210{
1211 return sb->s_fs_info;
1212}
1213
7119e220
AV
1214static inline struct cifs_sb_info *
1215CIFS_FILE_SB(struct file *file)
1216{
1217 return CIFS_SB(file_inode(file)->i_sb);
1218}
1219
ab2f218f 1220static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
ac67055e
JA
1221{
1222 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
1223 return '/';
1224 else
1225 return '\\';
1226}
1da177e4 1227
f87d39d9
SF
1228static inline void
1229convert_delimiter(char *path, char delim)
1230{
1cc9bd68 1231 char old_delim, *pos;
f87d39d9
SF
1232
1233 if (delim == '/')
1234 old_delim = '\\';
1235 else
1236 old_delim = '/';
1237
1cc9bd68
SF
1238 pos = path;
1239 while ((pos = strchr(pos, old_delim)))
1240 *pos = delim;
f87d39d9
SF
1241}
1242
a4544347
SF
1243#ifdef CONFIG_CIFS_STATS
1244#define cifs_stats_inc atomic_inc
1245
96daf2b0 1246static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
a4544347
SF
1247 unsigned int bytes)
1248{
1249 if (bytes) {
1250 spin_lock(&tcon->stat_lock);
1251 tcon->bytes_written += bytes;
1252 spin_unlock(&tcon->stat_lock);
1253 }
1254}
1255
96daf2b0 1256static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
a4544347
SF
1257 unsigned int bytes)
1258{
1259 spin_lock(&tcon->stat_lock);
1260 tcon->bytes_read += bytes;
1261 spin_unlock(&tcon->stat_lock);
1262}
1263#else
1264
d38d8c74
SF
1265#define cifs_stats_inc(field) do {} while (0)
1266#define cifs_stats_bytes_written(tcon, bytes) do {} while (0)
1267#define cifs_stats_bytes_read(tcon, bytes) do {} while (0)
a4544347
SF
1268
1269#endif
1270
2b84a36c
JL
1271
1272/*
44d22d84
JL
1273 * This is the prototype for the mid receive function. This function is for
1274 * receiving the rest of the SMB frame, starting with the WordCount (which is
1275 * just after the MID in struct smb_hdr). Note:
1276 *
1277 * - This will be called by cifsd, with no locks held.
1278 * - The mid will still be on the pending_mid_q.
1279 * - mid->resp_buf will point to the current buffer.
1280 *
1281 * Returns zero on a successful receive, or an error. The receive state in
1282 * the TCP_Server_Info will also be updated.
1283 */
1284typedef int (mid_receive_t)(struct TCP_Server_Info *server,
1285 struct mid_q_entry *mid);
1286
1287/*
1288 * This is the prototype for the mid callback function. This is called once the
1289 * mid has been received off of the socket. When creating one, take special
1290 * care to avoid deadlocks. Things to bear in mind:
2b84a36c 1291 *
3c1105df
JL
1292 * - it will be called by cifsd, with no locks held
1293 * - the mid will be removed from any lists
2b84a36c
JL
1294 */
1295typedef void (mid_callback_t)(struct mid_q_entry *mid);
1296
1da177e4
LT
1297/* one of these for every pending CIFS request to the server */
1298struct mid_q_entry {
1299 struct list_head qhead; /* mids waiting on reply from this server */
2dc7e1c0 1300 struct TCP_Server_Info *server; /* server corresponding to this mid */
7c9421e1
PS
1301 __u64 mid; /* multiplex id */
1302 __u32 pid; /* process id */
1da177e4 1303 __u32 sequence_number; /* for CIFS signing */
1047abc1
SF
1304 unsigned long when_alloc; /* when mid was created */
1305#ifdef CONFIG_CIFS_STATS2
1306 unsigned long when_sent; /* time when smb send finished */
1307 unsigned long when_received; /* when demux complete (taken off wire) */
1308#endif
44d22d84 1309 mid_receive_t *receive; /* call receive callback */
2b84a36c
JL
1310 mid_callback_t *callback; /* call completion callback */
1311 void *callback_data; /* general purpose pointer for callback */
d4e4854f 1312 void *resp_buf; /* pointer to received SMB header */
7c9421e1
PS
1313 int mid_state; /* wish this were enum but can not pass to wait_event */
1314 __le16 command; /* smb command code */
1315 bool large_buf:1; /* if valid response, is pointer to large buf */
4b18f2a9
SF
1316 bool multiRsp:1; /* multiple trans2 responses for one request */
1317 bool multiEnd:1; /* both received */
1da177e4
LT
1318};
1319
789e6661
SF
1320/* Make code in transport.c a little cleaner by moving
1321 update of optional stats into function below */
1322#ifdef CONFIG_CIFS_STATS2
1323
1324static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
1325{
1326 atomic_inc(&server->in_send);
1327}
1328
1329static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
1330{
1331 atomic_dec(&server->in_send);
1332}
1333
1334static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
1335{
1336 atomic_inc(&server->num_waiters);
1337}
1338
1339static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
1340{
1341 atomic_dec(&server->num_waiters);
1342}
1343
1344static inline void cifs_save_when_sent(struct mid_q_entry *mid)
1345{
1346 mid->when_sent = jiffies;
1347}
1348#else
1349static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
1350{
1351}
1352static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
1353{
1354}
1355
1356static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
1357{
1358}
1359
1360static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
1361{
1362}
1363
1364static inline void cifs_save_when_sent(struct mid_q_entry *mid)
1365{
1366}
1367#endif
1da177e4 1368
ff5dbd9e
SF
1369/* for pending dnotify requests */
1370struct dir_notify_req {
13cd4b7f
SF
1371 struct list_head lhead;
1372 __le16 Pid;
1373 __le16 PidHigh;
1374 __u16 Mid;
1375 __u16 Tid;
1376 __u16 Uid;
1377 __u16 netfid;
1378 __u32 filter; /* CompletionFilter (for multishot) */
1379 int multishot;
1380 struct file *pfile;
ff5dbd9e
SF
1381};
1382
366781c1
SF
1383struct dfs_info3_param {
1384 int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/
8aad018b 1385 int path_consumed;
366781c1
SF
1386 int server_type;
1387 int ref_flag;
1388 char *path_name;
1389 char *node_name;
1390};
1391
cc0bad75
JL
1392/*
1393 * common struct for holding inode info when searching for or updating an
1394 * inode with new info
1395 */
1396
1397#define CIFS_FATTR_DFS_REFERRAL 0x1
0b8f18e3
JL
1398#define CIFS_FATTR_DELETE_PENDING 0x2
1399#define CIFS_FATTR_NEED_REVAL 0x4
3d694380 1400#define CIFS_FATTR_INO_COLLISION 0x8
74d290da 1401#define CIFS_FATTR_UNKNOWN_NLINK 0x10
cc0bad75
JL
1402
1403struct cifs_fattr {
1404 u32 cf_flags;
1405 u32 cf_cifsattrs;
1406 u64 cf_uniqueid;
1407 u64 cf_eof;
1408 u64 cf_bytes;
20054bd6 1409 u64 cf_createtime;
4a2c8cf5
EB
1410 kuid_t cf_uid;
1411 kgid_t cf_gid;
cc0bad75
JL
1412 umode_t cf_mode;
1413 dev_t cf_rdev;
1414 unsigned int cf_nlink;
1415 unsigned int cf_dtype;
1416 struct timespec cf_atime;
1417 struct timespec cf_mtime;
1418 struct timespec cf_ctime;
1419};
1420
366781c1
SF
1421static inline void free_dfs_info_param(struct dfs_info3_param *param)
1422{
1423 if (param) {
1424 kfree(param->path_name);
1425 kfree(param->node_name);
1426 kfree(param);
1427 }
1428}
1429
1430static inline void free_dfs_info_array(struct dfs_info3_param *param,
1431 int number_of_items)
1432{
1433 int i;
1434 if ((number_of_items == 0) || (param == NULL))
1435 return;
1436 for (i = 0; i < number_of_items; i++) {
1437 kfree(param[i].path_name);
1438 kfree(param[i].node_name);
1439 }
1440 kfree(param);
1441}
1442
1da177e4
LT
1443#define MID_FREE 0
1444#define MID_REQUEST_ALLOCATED 1
1445#define MID_REQUEST_SUBMITTED 2
1446#define MID_RESPONSE_RECEIVED 4
1447#define MID_RETRY_NEEDED 8 /* session closed while this request out */
71823baf 1448#define MID_RESPONSE_MALFORMED 0x10
3c1105df 1449#define MID_SHUTDOWN 0x20
ec637e3f
SF
1450
1451/* Types of response buffer returned from SendReceive2 */
1452#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
1453#define CIFS_SMALL_BUFFER 1
1454#define CIFS_LARGE_BUFFER 2
1455#define CIFS_IOVEC 4 /* array of response buffers */
1da177e4 1456
133672ef 1457/* Type of Request to SendReceive2 */
7749981e
JL
1458#define CIFS_BLOCKING_OP 1 /* operation can block */
1459#define CIFS_ASYNC_OP 2 /* do not wait for response */
1460#define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */
133672ef
SF
1461#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */
1462#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */
1463#define CIFS_NO_RESP 0x040 /* no response buffer required */
1464
a891f0f8
PS
1465/* Type of request operation */
1466#define CIFS_ECHO_OP 0x080 /* echo request */
1467#define CIFS_OBREAK_OP 0x0100 /* oplock break request */
ec2e4523
PS
1468#define CIFS_NEG_OP 0x0200 /* negotiate request */
1469#define CIFS_OP_MASK 0x0380 /* mask request type */
cb7e9eab 1470#define CIFS_HAS_CREDITS 0x0400 /* already has credits */
a891f0f8 1471
3979877e
SF
1472/* Security Flags: indicate type of session setup needed */
1473#define CIFSSEC_MAY_SIGN 0x00001
1474#define CIFSSEC_MAY_NTLM 0x00002
1475#define CIFSSEC_MAY_NTLMV2 0x00004
1476#define CIFSSEC_MAY_KRB5 0x00008
1477#ifdef CONFIG_CIFS_WEAK_PW_HASH
1478#define CIFSSEC_MAY_LANMAN 0x00010
1479#define CIFSSEC_MAY_PLNTXT 0x00020
516897a2
SF
1480#else
1481#define CIFSSEC_MAY_LANMAN 0
1482#define CIFSSEC_MAY_PLNTXT 0
3979877e
SF
1483#endif /* weak passwords */
1484#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */
ac683924 1485#define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */
3979877e
SF
1486
1487#define CIFSSEC_MUST_SIGN 0x01001
1488/* note that only one of the following can be set so the
1489result of setting MUST flags more than once will be to
1490require use of the stronger protocol */
1491#define CIFSSEC_MUST_NTLM 0x02002
1492#define CIFSSEC_MUST_NTLMV2 0x04004
1493#define CIFSSEC_MUST_KRB5 0x08008
1494#ifdef CONFIG_CIFS_WEAK_PW_HASH
1495#define CIFSSEC_MUST_LANMAN 0x10010
1496#define CIFSSEC_MUST_PLNTXT 0x20020
0d3a01fa 1497#ifdef CONFIG_CIFS_UPCALL
20d1752f 1498#define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */
0d3a01fa 1499#else
20d1752f 1500#define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */
016ec75f 1501#endif /* UPCALL */
0d3a01fa 1502#else /* do not allow weak pw hash */
88a4412b
SF
1503#define CIFSSEC_MUST_LANMAN 0
1504#define CIFSSEC_MUST_PLNTXT 0
0d3a01fa 1505#ifdef CONFIG_CIFS_UPCALL
ac683924 1506#define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */
d38d8c74 1507#else
ac683924 1508#define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */
016ec75f 1509#endif /* UPCALL */
3979877e
SF
1510#endif /* WEAK_PW_HASH */
1511#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */
ac683924 1512#define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */
3979877e 1513
896a8fc2 1514#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP)
ef571cad 1515#define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
ac683924 1516#define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)
1da177e4
LT
1517/*
1518 *****************************************************************
1519 * All constants go here
1520 *****************************************************************
1521 */
1522
1523#define UID_HASH (16)
1524
1525/*
1526 * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the
1527 * following to be declared.
1528 */
1529
1530/****************************************************************************
1531 * Locking notes. All updates to global variables and lists should be
1532 * protected by spinlocks or semaphores.
1533 *
1534 * Spinlocks
1535 * ---------
1536 * GlobalMid_Lock protects:
1537 * list operations on pending_mid_q and oplockQ
1538 * updates to XID counters, multiplex id and SMB sequence numbers
3afca265
SF
1539 * tcp_ses_lock protects:
1540 * list operations on tcp and SMB session lists
1541 * tcon->open_file_lock protects the list of open files hanging off the tcon
1542 * cfile->file_info_lock protects counters and fields in cifs file struct
1da177e4
LT
1543 * f_owner.lock protects certain per file struct operations
1544 * mapping->page_lock protects certain per page operations
1545 *
1546 * Semaphores
1547 * ----------
1548 * sesSem operations on smb session
1549 * tconSem operations on tree connection
d38d8c74 1550 * fh_sem file handle reconnection operations
1da177e4
LT
1551 *
1552 ****************************************************************************/
1553
1554#ifdef DECLARE_GLOBALS_HERE
1555#define GLOBAL_EXTERN
1556#else
1557#define GLOBAL_EXTERN extern
1558#endif
1559
e7ddee90
JL
1560/*
1561 * the list of TCP_Server_Info structures, ie each of the sockets
fb396016 1562 * connecting our client to a distinct server (ip address), is
e7ddee90 1563 * chained together by cifs_tcp_ses_list. The list of all our SMB
fb396016 1564 * sessions (and from that the tree connections) can be found
e7ddee90
JL
1565 * by iterating over cifs_tcp_ses_list
1566 */
1567GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
1568
f1987b44
JL
1569/*
1570 * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
1571 * tcp session, and the list of tcon's per smb session. It also protects
1572 * the reference counters for the server, smb session, and tcon. Finally,
1573 * changes to the tcon->tidStatus should be done while holding this lock.
3afca265
SF
1574 * generally the locks should be taken in order tcp_ses_lock before
1575 * tcon->open_file_lock and that before file->file_info_lock since the
1576 * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file
f1987b44 1577 */
3f9bcca7 1578GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock;
ddb4cbfc 1579
0eff0e26 1580#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
99ee4dbd
SF
1581/* Outstanding dir notify requests */
1582GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
1583/* DirNotify response queue */
1584GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
0eff0e26 1585#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
ff5dbd9e 1586
1da177e4
LT
1587/*
1588 * Global transaction id (XID) information
1589 */
1590GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */
254e55ed 1591GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
1da177e4 1592GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */
254e55ed
SF
1593GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */
1594 /* on midQ entries */
1da177e4
LT
1595/*
1596 * Global counters, updated atomically
1597 */
1598GLOBAL_EXTERN atomic_t sesInfoAllocCount;
1599GLOBAL_EXTERN atomic_t tconInfoAllocCount;
1600GLOBAL_EXTERN atomic_t tcpSesAllocCount;
1601GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
1602GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
1603
aaa9bbe0 1604/* Various Debug counters */
4498eed5
SF
1605GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
1606#ifdef CONFIG_CIFS_STATS2
1607GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
1608GLOBAL_EXTERN atomic_t totSmBufAllocCount;
1609#endif
1610GLOBAL_EXTERN atomic_t smBufAllocCount;
1da177e4
LT
1611GLOBAL_EXTERN atomic_t midCount;
1612
1613/* Misc globals */
5e500ed1 1614GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */
1404297e 1615GLOBAL_EXTERN bool lookupCacheEnabled;
04912d6a 1616GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent
1da177e4 1617 with more secure ntlmssp2 challenge/resp */
1da177e4 1618GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
1404297e 1619GLOBAL_EXTERN bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
1da177e4
LT
1620GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */
1621GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
1622GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */
1623GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
1624
21fed0d5 1625#ifdef CONFIG_CIFS_ACL
4d79dba0
SP
1626GLOBAL_EXTERN struct rb_root uidtree;
1627GLOBAL_EXTERN struct rb_root gidtree;
1628GLOBAL_EXTERN spinlock_t siduidlock;
1629GLOBAL_EXTERN spinlock_t sidgidlock;
21fed0d5
SP
1630GLOBAL_EXTERN struct rb_root siduidtree;
1631GLOBAL_EXTERN struct rb_root sidgidtree;
1632GLOBAL_EXTERN spinlock_t uidsidlock;
1633GLOBAL_EXTERN spinlock_t gidsidlock;
1634#endif /* CONFIG_CIFS_ACL */
4d79dba0 1635
9b646972 1636void cifs_oplock_break(struct work_struct *work);
3b7433b8 1637
3bc303c2 1638extern const struct slow_work_ops cifs_oplock_break_ops;
da472fc8 1639extern struct workqueue_struct *cifsiod_wq;
3d22462a 1640extern __u32 cifs_lock_secret;
abd2e44d 1641
2dc7e1c0
PS
1642extern mempool_t *cifs_mid_poolp;
1643
23db65f5
JL
1644/* Operations for different SMB versions */
1645#define SMB1_VERSION_STRING "1.0"
1646extern struct smb_version_operations smb1_operations;
1647extern struct smb_version_values smb1_values;
e4aa25e7 1648#define SMB20_VERSION_STRING "2.0"
53ef1016 1649extern struct smb_version_operations smb20_operations;
e4aa25e7 1650extern struct smb_version_values smb20_values;
1080ef75
SF
1651#define SMB21_VERSION_STRING "2.1"
1652extern struct smb_version_operations smb21_operations;
1653extern struct smb_version_values smb21_values;
e4aa25e7 1654#define SMB30_VERSION_STRING "3.0"
38107d45 1655extern struct smb_version_operations smb30_operations;
e4aa25e7 1656extern struct smb_version_values smb30_values;
20b6d8b4
SF
1657#define SMB302_VERSION_STRING "3.02"
1658/*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */
1659extern struct smb_version_values smb302_values;
5f7fbf73 1660#define SMB311_VERSION_STRING "3.1.1"
aab1893d
SF
1661#define ALT_SMB311_VERSION_STRING "3.11"
1662extern struct smb_version_operations smb311_operations;
5f7fbf73 1663extern struct smb_version_values smb311_values;
abd2e44d 1664#endif /* _CIFS_GLOB_H */