Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
7ee1af76 | 6 | * Jeremy Allison (jra@samba.org) |
1da177e4 LT |
7 | * |
8 | * This library is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as published | |
10 | * by the Free Software Foundation; either version 2.1 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | * the GNU Lesser General Public License for more details. | |
d38d8c74 | 17 | * |
1da177e4 | 18 | */ |
abd2e44d SJ |
19 | #ifndef _CIFS_GLOB_H |
20 | #define _CIFS_GLOB_H | |
21 | ||
1da177e4 LT |
22 | #include <linux/in.h> |
23 | #include <linux/in6.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
2dc7e1c0 | 25 | #include <linux/mempool.h> |
9b646972 | 26 | #include <linux/workqueue.h> |
1da177e4 | 27 | #include "cifs_fs_sb.h" |
442aa310 | 28 | #include "cifsacl.h" |
d2b91521 SP |
29 | #include <crypto/internal/hash.h> |
30 | #include <linux/scatterlist.h> | |
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 PS |
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 |
92 | enum statusEnum { |
93 | CifsNew = 0, | |
94 | CifsGood, | |
95 | CifsExiting, | |
fd88ce93 SF |
96 | CifsNeedReconnect, |
97 | CifsNeedNegotiate | |
1da177e4 LT |
98 | }; |
99 | ||
100 | enum 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 | 109 | struct session_key { |
b609f06a | 110 | unsigned int len; |
21e73393 | 111 | char *response; |
b609f06a SF |
112 | }; |
113 | ||
d2b91521 SP |
114 | /* crypto security descriptor definition */ |
115 | struct 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 |
121 | struct 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 | 133 | struct 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 |
141 | struct 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 | */ | |
164 | struct 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 |
173 | enum 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 |
181 | struct mid_q_entry; |
182 | struct TCP_Server_Info; | |
55157dfb | 183 | struct cifsFileInfo; |
082d0642 | 184 | struct cifs_ses; |
2e6e02ab | 185 | struct cifs_tcon; |
b669f33c | 186 | struct dfs_info3_param; |
1208ef1f | 187 | struct cifs_fattr; |
9224dfc2 | 188 | struct smb_vol; |
fb1214e4 | 189 | struct cifs_fid; |
fc9c5966 | 190 | struct cifs_readdata; |
c9de5c80 | 191 | struct cifs_writedata; |
f9c6e234 | 192 | struct cifs_io_parms; |
92fc65a7 | 193 | struct cifs_search_info; |
95a3f2f3 | 194 | struct cifsInodeInfo; |
226730b4 | 195 | struct cifs_open_parms; |
121b046a | 196 | |
23db65f5 | 197 | struct 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 *); | |
c11f1df5 SP |
231 | void (*downgrade_oplock)(struct TCP_Server_Info *, |
232 | struct cifsInodeInfo *, bool); | |
316cf94a PS |
233 | /* process transaction2 response */ |
234 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
235 | char *, int); | |
286170aa PS |
236 | /* check if we need to negotiate */ |
237 | bool (*need_neg)(struct TCP_Server_Info *); | |
238 | /* negotiate to the server */ | |
239 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
240 | /* set negotiated write size */ |
241 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
242 | /* set negotiated read size */ | |
243 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
244 | /* setup smb sessionn */ |
245 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
246 | const struct nls_table *); | |
247 | /* close smb session */ | |
248 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
249 | /* connect to a server share */ |
250 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
251 | struct cifs_tcon *, const struct nls_table *); | |
252 | /* close tree connecion */ | |
253 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
254 | /* get DFS referrals */ |
255 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
256 | const char *, struct dfs_info3_param **, | |
257 | unsigned int *, const struct nls_table *, int); | |
af4281dc PS |
258 | /* informational QFS call */ |
259 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); | |
68889f26 PS |
260 | /* check if a path is accessible or not */ |
261 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
262 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
263 | /* query path data from the server */ |
264 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
265 | struct cifs_sb_info *, const char *, | |
eb85d94b | 266 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
267 | /* query file data from the server */ |
268 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
269 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
270 | /* get server index number */ |
271 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
272 | struct cifs_sb_info *, const char *, | |
273 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
274 | /* set size by path */ |
275 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
276 | const char *, __u64, struct cifs_sb_info *, bool); | |
277 | /* set size by file handle */ | |
278 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
279 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
280 | /* set attributes */ |
281 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
282 | const unsigned int); | |
64a5cfa6 SF |
283 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
284 | struct cifsFileInfo *); | |
f6d76178 PS |
285 | /* check if we can send an echo or nor */ |
286 | bool (*can_echo)(struct TCP_Server_Info *); | |
287 | /* send echo request */ | |
288 | int (*echo)(struct TCP_Server_Info *); | |
f436720e PS |
289 | /* create directory */ |
290 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, | |
291 | struct cifs_sb_info *); | |
292 | /* set info on created directory */ | |
293 | void (*mkdir_setinfo)(struct inode *, const char *, | |
294 | struct cifs_sb_info *, struct cifs_tcon *, | |
295 | const unsigned int); | |
f958ca5d PS |
296 | /* remove directory */ |
297 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
298 | struct cifs_sb_info *); | |
ed6875e0 PS |
299 | /* unlink file */ |
300 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
301 | struct cifs_sb_info *); | |
302 | /* open, rename and delete file */ | |
303 | int (*rename_pending_delete)(const char *, struct dentry *, | |
304 | const unsigned int); | |
8ceb9843 PS |
305 | /* send rename request */ |
306 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
307 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
308 | /* send create hardlink request */ |
309 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
310 | const char *, const char *, | |
311 | struct cifs_sb_info *); | |
b42bf888 PS |
312 | /* query symlink target */ |
313 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
314 | const char *, char **, struct cifs_sb_info *); | |
fb1214e4 | 315 | /* open a file for non-posix mounts */ |
226730b4 PS |
316 | int (*open)(const unsigned int, struct cifs_open_parms *, |
317 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
318 | /* set fid protocol-specific info */ |
319 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 320 | /* close a file */ |
760ad0ca PS |
321 | void (*close)(const unsigned int, struct cifs_tcon *, |
322 | struct cifs_fid *); | |
1d8c4c00 PS |
323 | /* send a flush request to the server */ |
324 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
325 | /* async read from the server */ |
326 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 327 | /* async write to the server */ |
4a5c80d7 SF |
328 | int (*async_writev)(struct cifs_writedata *, |
329 | void (*release)(struct kref *)); | |
f9c6e234 PS |
330 | /* sync read from the server */ |
331 | int (*sync_read)(const unsigned int, struct cifsFileInfo *, | |
332 | struct cifs_io_parms *, unsigned int *, char **, | |
333 | int *); | |
ba9ad725 PS |
334 | /* sync write to the server */ |
335 | int (*sync_write)(const unsigned int, struct cifsFileInfo *, | |
336 | struct cifs_io_parms *, unsigned int *, struct kvec *, | |
337 | unsigned long); | |
92fc65a7 PS |
338 | /* open dir, start readdir */ |
339 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
340 | const char *, struct cifs_sb_info *, | |
341 | struct cifs_fid *, __u16, | |
342 | struct cifs_search_info *); | |
343 | /* continue readdir */ | |
344 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
345 | struct cifs_fid *, | |
346 | __u16, struct cifs_search_info *srch_inf); | |
347 | /* close dir */ | |
348 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
349 | struct cifs_fid *); | |
350 | /* calculate a size of SMB message */ | |
351 | unsigned int (*calc_smb_size)(void *); | |
2e44b288 PS |
352 | /* check for STATUS_PENDING and process it in a positive case */ |
353 | bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); | |
95a3f2f3 PS |
354 | /* send oplock break response */ |
355 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
356 | struct cifsInodeInfo *); | |
76ec5e33 PS |
357 | /* query remote filesystem */ |
358 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
359 | struct kstatfs *); | |
d39a4f71 PS |
360 | /* send mandatory brlock to the server */ |
361 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
362 | __u64, __u32, int, int, bool); | |
363 | /* unlock range of mandatory locks */ | |
364 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
365 | const unsigned int); | |
366 | /* push brlocks from the cache to the server */ | |
367 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 368 | /* get lease key of the inode */ |
a41a28bd | 369 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 370 | /* set lease key of the inode */ |
a41a28bd | 371 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 372 | /* generate new lease key */ |
a41a28bd | 373 | void (*new_lease_key)(struct cifs_fid *); |
32811d24 | 374 | int (*generate_signingkey)(struct cifs_ses *); |
53ef1016 | 375 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *); |
b5be1a1c SP |
376 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
377 | struct cifs_sb_info *, const unsigned char *, | |
378 | char *, unsigned int *); | |
cbb0aba6 SP |
379 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
380 | struct cifs_sb_info *, const unsigned char *, | |
381 | char *, unsigned int *); | |
53ef1016 PS |
382 | /* if we can do cache read operations */ |
383 | bool (*is_read_op)(__u32); | |
384 | /* set oplock level for the inode */ | |
42873b0a PS |
385 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
386 | bool *); | |
a41a28bd PS |
387 | /* create lease context buffer for CREATE request */ |
388 | char * (*create_lease_buf)(u8 *, u8); | |
42873b0a PS |
389 | /* parse lease context buffer and return oplock/epoch info */ |
390 | __u8 (*parse_lease_buf)(void *, unsigned int *); | |
41c1358e SF |
391 | int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file, |
392 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
393 | u64 dest_off); | |
ff1c038a | 394 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
395 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
396 | const unsigned char *, const unsigned char *, char *, | |
397 | size_t, const struct nls_table *, int); | |
398 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, | |
399 | const char *, const void *, const __u16, | |
400 | const struct nls_table *, int); | |
83e3bc23 SF |
401 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
402 | const char *, u32 *); | |
42eacf9e SF |
403 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
404 | const struct cifs_fid *, u32 *); | |
83e3bc23 SF |
405 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
406 | int); | |
7f6c5008 PS |
407 | /* writepages retry size */ |
408 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
409 | /* get mtu credits */ |
410 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
411 | unsigned int *, unsigned int *); | |
23db65f5 JL |
412 | }; |
413 | ||
414 | struct smb_version_values { | |
415 | char *version_string; | |
e4aa25e7 SF |
416 | __u16 protocol_id; |
417 | __u32 req_capabilities; | |
106dc538 PS |
418 | __u32 large_lock_type; |
419 | __u32 exclusive_lock_type; | |
420 | __u32 shared_lock_type; | |
421 | __u32 unlock_lock_type; | |
1887f601 PS |
422 | size_t header_size; |
423 | size_t max_header_size; | |
eb378711 | 424 | size_t read_rsp_size; |
2dc7e1c0 | 425 | __le16 lock_cmd; |
29e20f9c PS |
426 | unsigned int cap_unix; |
427 | unsigned int cap_nt_find; | |
428 | unsigned int cap_large_files; | |
50285882 JL |
429 | __u16 signing_enabled; |
430 | __u16 signing_required; | |
a41a28bd | 431 | size_t create_lease_size; |
23db65f5 JL |
432 | }; |
433 | ||
1887f601 PS |
434 | #define HEADER_SIZE(server) (server->vals->header_size) |
435 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
436 | ||
f87d39d9 SF |
437 | struct smb_vol { |
438 | char *username; | |
439 | char *password; | |
440 | char *domainname; | |
441 | char *UNC; | |
f87d39d9 SF |
442 | char *iocharset; /* local code page for mapping to and from Unicode */ |
443 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
444 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
3da46565 EB |
445 | kuid_t cred_uid; |
446 | kuid_t linux_uid; | |
447 | kgid_t linux_gid; | |
448 | kuid_t backupuid; | |
449 | kgid_t backupgid; | |
5206efd6 AV |
450 | umode_t file_mode; |
451 | umode_t dir_mode; | |
1e3cc57e JL |
452 | enum securityEnum sectype; /* sectype requested via mnt opts */ |
453 | bool sign; /* was signing requested via mnt opts? */ | |
f87d39d9 SF |
454 | bool retry:1; |
455 | bool intr:1; | |
456 | bool setuids:1; | |
457 | bool override_uid:1; | |
458 | bool override_gid:1; | |
459 | bool dynperm:1; | |
460 | bool noperm:1; | |
461 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
462 | bool cifs_acl:1; | |
3d3ea8e6 SP |
463 | bool backupuid_specified; /* mount option backupuid is specified */ |
464 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
465 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
466 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
467 | bool direct_io:1; | |
468 | bool strict_io:1; /* strict cache behavior */ | |
469 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
470 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
471 | bool no_linux_ext:1; | |
472 | bool sfu_emul:1; | |
473 | bool nullauth:1; /* attempt to authenticate with null user */ | |
474 | bool nocase:1; /* request case insensitive filenames */ | |
475 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
476 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
477 | bool seal:1; /* request transport encryption on share */ | |
478 | bool nodfs:1; /* Do not request DFS, even if available */ | |
479 | bool local_lease:1; /* check leases only on local system, not remote */ | |
480 | bool noblocksnd:1; | |
481 | bool noautotune:1; | |
482 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
483 | bool fsc:1; /* enable fscache */ | |
484 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
485 | bool multiuser:1; | |
d4ffff1f | 486 | bool rwpidforward:1; /* pid forward for read/write operations */ |
a0b3df5c | 487 | bool nosharesock; |
f87d39d9 SF |
488 | unsigned int rsize; |
489 | unsigned int wsize; | |
490 | bool sockopt_tcp_nodelay:1; | |
f87d39d9 | 491 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
23db65f5 JL |
492 | struct smb_version_operations *ops; |
493 | struct smb_version_values *vals; | |
f87d39d9 | 494 | char *prepath; |
b979aaa1 | 495 | struct sockaddr_storage dstaddr; /* destination address */ |
f87d39d9 SF |
496 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
497 | struct nls_table *local_nls; | |
498 | }; | |
499 | ||
25c7f41e PS |
500 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
501 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
502 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
503 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ | |
504 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
505 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
506 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
507 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
508 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
509 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
510 | |
511 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
512 | MS_NODEV | MS_SYNCHRONOUS) | |
513 | ||
514 | struct cifs_mnt_data { | |
515 | struct cifs_sb_info *cifs_sb; | |
516 | struct smb_vol *vol; | |
517 | int flags; | |
518 | }; | |
519 | ||
792af7b0 PS |
520 | static inline unsigned int |
521 | get_rfc1002_length(void *buf) | |
522 | { | |
dca1c8d1 | 523 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
524 | } |
525 | ||
ec2e4523 PS |
526 | static inline void |
527 | inc_rfc1001_len(void *buf, int count) | |
528 | { | |
529 | be32_add_cpu((__be32 *)buf, count); | |
530 | } | |
531 | ||
1da177e4 | 532 | struct TCP_Server_Info { |
3b795210 SF |
533 | struct list_head tcp_ses_list; |
534 | struct list_head smb_ses_list; | |
e7ddee90 | 535 | int srv_count; /* reference counter */ |
a10faeb2 | 536 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 537 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
538 | struct smb_version_operations *ops; |
539 | struct smb_version_values *vals; | |
c3dccf48 | 540 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 541 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 542 | struct socket *ssocket; |
a9f1b85e | 543 | struct sockaddr_storage dstaddr; |
3eb9a889 | 544 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
545 | #ifdef CONFIG_NET_NS |
546 | struct net *net; | |
547 | #endif | |
d38d8c74 | 548 | wait_queue_head_t response_q; |
1da177e4 LT |
549 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
550 | struct list_head pending_mid_q; | |
edf1ae40 SF |
551 | bool noblocksnd; /* use blocking sendmsg */ |
552 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 553 | bool tcp_nodelay; |
2d86dbc9 | 554 | int credits; /* send no more requests at once */ |
fc40f9cf | 555 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 556 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 557 | struct mutex srv_mutex; |
1da177e4 LT |
558 | struct task_struct *tsk; |
559 | char server_GUID[16]; | |
286170aa | 560 | __u16 sec_mode; |
38d77c50 | 561 | bool sign; /* is signing enabled on this connection? */ |
c3dccf48 | 562 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
563 | #ifdef CONFIG_CIFS_SMB2 |
564 | int echo_credits; /* echo reserved slots */ | |
565 | int oplock_credits; /* oplock break reserved slots */ | |
566 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 567 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
28ea5290 | 568 | #endif |
c3dccf48 | 569 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 570 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
571 | unsigned int maxReq; /* Clients should submit no more */ |
572 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
573 | /* multiplexed reads or writes */ | |
574 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
575 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
576 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
577 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 578 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
579 | /* message size the server can send or receive for */ |
580 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 581 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 582 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 583 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 584 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 585 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 586 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 587 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 588 | struct session_key session_key; |
3a5ff61c | 589 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 590 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
591 | #define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ |
592 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ | |
593 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
594 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 595 | /* extended security flavors that server supports */ |
c3dccf48 JL |
596 | bool sec_ntlmssp; /* supports NTLMSSP */ |
597 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
598 | bool sec_kerberos; /* supports plain Kerberos */ |
599 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 600 | bool large_buf; /* is current buffer large? */ |
c74093b6 | 601 | struct delayed_work echo; /* echo ping workqueue job */ |
1041e3f9 JL |
602 | struct kvec *iov; /* reusable kvec array for receives */ |
603 | unsigned int nr_iov; /* number of kvecs in array */ | |
2a37ef94 JL |
604 | char *smallbuf; /* pointer to current "small" buffer */ |
605 | char *bigbuf; /* pointer to current "big" buffer */ | |
606 | unsigned int total_read; /* total amount of data read in this pass */ | |
488f1d2d SJ |
607 | #ifdef CONFIG_CIFS_FSCACHE |
608 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
609 | #endif | |
c3dccf48 | 610 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 611 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
612 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
613 | #endif | |
ec2e4523 PS |
614 | #ifdef CONFIG_CIFS_SMB2 |
615 | unsigned int max_read; | |
616 | unsigned int max_write; | |
617 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 LT |
618 | }; |
619 | ||
fc40f9cf PS |
620 | static inline unsigned int |
621 | in_flight(struct TCP_Server_Info *server) | |
622 | { | |
623 | unsigned int num; | |
624 | spin_lock(&server->req_lock); | |
625 | num = server->in_flight; | |
626 | spin_unlock(&server->req_lock); | |
627 | return num; | |
628 | } | |
629 | ||
2d86dbc9 | 630 | static inline bool |
bc205ed1 | 631 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 632 | { |
2d86dbc9 | 633 | int num; |
fc40f9cf | 634 | spin_lock(&server->req_lock); |
bc205ed1 | 635 | num = *credits; |
fc40f9cf | 636 | spin_unlock(&server->req_lock); |
2d86dbc9 | 637 | return num > 0; |
fc40f9cf PS |
638 | } |
639 | ||
45275789 | 640 | static inline void |
a891f0f8 PS |
641 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
642 | const int optype) | |
45275789 | 643 | { |
a891f0f8 | 644 | server->ops->add_credits(server, add, optype); |
45275789 PS |
645 | } |
646 | ||
cb7e9eab PS |
647 | static inline void |
648 | add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add, | |
649 | const int optype) | |
650 | { | |
651 | if (add) { | |
652 | server->ops->add_credits(server, add, optype); | |
653 | wake_up(&server->request_q); | |
654 | } | |
655 | } | |
656 | ||
45275789 PS |
657 | static inline void |
658 | set_credits(struct TCP_Server_Info *server, const int val) | |
659 | { | |
660 | server->ops->set_credits(server, val); | |
661 | } | |
662 | ||
88257360 | 663 | static inline __u64 |
3d378d3f | 664 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 PS |
665 | { |
666 | return server->ops->get_next_mid(server); | |
667 | } | |
668 | ||
3d378d3f TG |
669 | static inline __le16 |
670 | get_next_mid(struct TCP_Server_Info *server) | |
671 | { | |
672 | __u16 mid = get_next_mid64(server); | |
673 | /* | |
674 | * The value in the SMB header should be little endian for easy | |
675 | * on-the-wire decoding. | |
676 | */ | |
677 | return cpu_to_le16(mid); | |
678 | } | |
679 | ||
680 | static inline __u16 | |
681 | get_mid(const struct smb_hdr *smb) | |
682 | { | |
683 | return le16_to_cpu(smb->Mid); | |
684 | } | |
685 | ||
686 | static inline bool | |
687 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
688 | { | |
689 | return mid == le16_to_cpu(smb->Mid); | |
690 | } | |
691 | ||
24985c53 PS |
692 | /* |
693 | * When the server supports very large reads and writes via POSIX extensions, | |
694 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
695 | * including the RFC1001 length. | |
696 | * | |
697 | * Note that this might make for "interesting" allocation problems during | |
698 | * writeback however as we have to allocate an array of pointers for the | |
699 | * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. | |
700 | * | |
701 | * For reads, there is a similar problem as we need to allocate an array | |
702 | * of kvecs to handle the receive, though that should only need to be done | |
703 | * once. | |
704 | */ | |
705 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
706 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
707 | ||
708 | /* | |
709 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
710 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
711 | * write up to the maximum size described by RFC1002. | |
712 | */ | |
713 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
714 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
715 | ||
716 | /* | |
717 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
718 | * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill | |
719 | * a single wsize request with a single call. | |
720 | */ | |
721 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
722 | ||
723 | /* | |
724 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
725 | * those values when posix extensions aren't in force. In actuality here, we | |
726 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
727 | * to be ok with the extra byte even though Windows doesn't send writes that | |
728 | * are that large. | |
729 | * | |
730 | * Citation: | |
731 | * | |
732 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
733 | */ | |
734 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
735 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
736 | ||
f1d0c998 RL |
737 | /* |
738 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
739 | * when CONFIG_NET_NS isn't set. | |
740 | */ | |
741 | ||
742 | #ifdef CONFIG_NET_NS | |
743 | ||
744 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
745 | { | |
746 | return srv->net; | |
747 | } | |
748 | ||
749 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
750 | { | |
751 | srv->net = net; | |
752 | } | |
753 | ||
754 | #else | |
755 | ||
756 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
757 | { | |
758 | return &init_net; | |
759 | } | |
760 | ||
761 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
762 | { | |
763 | } | |
764 | ||
765 | #endif | |
766 | ||
1da177e4 LT |
767 | /* |
768 | * Session structure. One of these for each uid session with a particular host | |
769 | */ | |
96daf2b0 | 770 | struct cifs_ses { |
14fbf50d | 771 | struct list_head smb_ses_list; |
3b795210 | 772 | struct list_head tcon_list; |
d7b619cf | 773 | struct mutex session_mutex; |
1da177e4 | 774 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 775 | int ses_count; /* reference counter */ |
1da177e4 | 776 | enum statusEnum status; |
750d1151 | 777 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 | 778 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
ad009ac9 SF |
779 | char *serverOS; /* name of operating system underlying server */ |
780 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 781 | char *serverDomain; /* security realm of server */ |
286170aa | 782 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
783 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
784 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 785 | unsigned int capabilities; |
d38d8c74 | 786 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 787 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
788 | char *user_name; /* must not be null except during init of sess |
789 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
790 | char *domainName; |
791 | char *password; | |
5d0d2882 | 792 | struct session_key auth_key; |
d3686d54 | 793 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
794 | enum securityEnum sectype; /* what security flavor was specified? */ |
795 | bool sign; /* is signing required? */ | |
3b795210 | 796 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
5478f9ba PS |
797 | #ifdef CONFIG_CIFS_SMB2 |
798 | __u16 session_flags; | |
32811d24 | 799 | char smb3signingkey[SMB3_SIGN_KEY_SIZE]; /* for signing smb3 packets */ |
5478f9ba | 800 | #endif /* CONFIG_CIFS_SMB2 */ |
1da177e4 | 801 | }; |
233839b1 | 802 | |
29e20f9c PS |
803 | static inline bool |
804 | cap_unix(struct cifs_ses *ses) | |
805 | { | |
806 | return ses->server->vals->cap_unix & ses->capabilities; | |
807 | } | |
808 | ||
1da177e4 LT |
809 | /* |
810 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 811 | * session |
1da177e4 | 812 | */ |
96daf2b0 | 813 | struct cifs_tcon { |
f1987b44 JL |
814 | struct list_head tcon_list; |
815 | int tc_count; | |
1da177e4 | 816 | struct list_head openFileList; |
96daf2b0 | 817 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 818 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 819 | char *nativeFileSystem; |
00e485b0 | 820 | char *password; /* for share-level security */ |
faaf946a | 821 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
822 | __u16 Flags; /* optional support bits */ |
823 | enum statusEnum tidStatus; | |
1da177e4 LT |
824 | #ifdef CONFIG_CIFS_STATS |
825 | atomic_t num_smbs_sent; | |
44c58186 PS |
826 | union { |
827 | struct { | |
828 | atomic_t num_writes; | |
829 | atomic_t num_reads; | |
830 | atomic_t num_flushes; | |
831 | atomic_t num_oplock_brks; | |
832 | atomic_t num_opens; | |
833 | atomic_t num_closes; | |
834 | atomic_t num_deletes; | |
835 | atomic_t num_mkdirs; | |
836 | atomic_t num_posixopens; | |
837 | atomic_t num_posixmkdirs; | |
838 | atomic_t num_rmdirs; | |
839 | atomic_t num_renames; | |
840 | atomic_t num_t2renames; | |
841 | atomic_t num_ffirst; | |
842 | atomic_t num_fnext; | |
843 | atomic_t num_fclose; | |
844 | atomic_t num_hardlinks; | |
845 | atomic_t num_symlinks; | |
846 | atomic_t num_locks; | |
847 | atomic_t num_acl_get; | |
848 | atomic_t num_acl_set; | |
849 | } cifs_stats; | |
d60622eb PS |
850 | #ifdef CONFIG_CIFS_SMB2 |
851 | struct { | |
852 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
853 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
854 | } smb2_stats; | |
855 | #endif /* CONFIG_CIFS_SMB2 */ | |
44c58186 | 856 | } stats; |
a5a2b489 SF |
857 | #ifdef CONFIG_CIFS_STATS2 |
858 | unsigned long long time_writes; | |
859 | unsigned long long time_reads; | |
860 | unsigned long long time_opens; | |
861 | unsigned long long time_deletes; | |
862 | unsigned long long time_closes; | |
863 | unsigned long long time_mkdirs; | |
864 | unsigned long long time_rmdirs; | |
865 | unsigned long long time_renames; | |
866 | unsigned long long time_t2renames; | |
867 | unsigned long long time_ffirst; | |
868 | unsigned long long time_fnext; | |
869 | unsigned long long time_fclose; | |
870 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
871 | __u64 bytes_read; |
872 | __u64 bytes_written; | |
873 | spinlock_t stat_lock; | |
a5a2b489 | 874 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 875 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 876 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 877 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
878 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
879 | bool retry:1; | |
880 | bool nocase:1; | |
95b1cb90 | 881 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 882 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 883 | for this mount even if server would support */ |
84210e91 | 884 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 885 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 886 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
faaf946a PS |
887 | #ifdef CONFIG_CIFS_SMB2 |
888 | bool print:1; /* set if connection to printer share */ | |
889 | bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ | |
769ee6a4 | 890 | __le32 capabilities; |
faaf946a PS |
891 | __u32 share_flags; |
892 | __u32 maximal_access; | |
893 | __u32 vol_serial_number; | |
894 | __le64 vol_create_time; | |
af6a12ea SF |
895 | __u32 ss_flags; /* sector size flags */ |
896 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
897 | __u32 max_chunks; |
898 | __u32 max_bytes_chunk; | |
899 | __u32 max_bytes_copy; | |
faaf946a | 900 | #endif /* CONFIG_CIFS_SMB2 */ |
d03382ce SJ |
901 | #ifdef CONFIG_CIFS_FSCACHE |
902 | u64 resource_id; /* server resource id */ | |
903 | struct fscache_cookie *fscache; /* cookie for share */ | |
904 | #endif | |
233839b1 | 905 | struct list_head pending_opens; /* list of incomplete opens */ |
c18c842b | 906 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
907 | }; |
908 | ||
7ffec372 JL |
909 | /* |
910 | * This is a refcounted and timestamped container for a tcon pointer. The | |
911 | * container holds a tcon reference. It is considered safe to free one of | |
912 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
913 | * "get" on the container. | |
914 | */ | |
915 | struct tcon_link { | |
b647c35f | 916 | struct rb_node tl_rbnode; |
6d4a0832 | 917 | kuid_t tl_uid; |
9d002df4 JL |
918 | unsigned long tl_flags; |
919 | #define TCON_LINK_MASTER 0 | |
920 | #define TCON_LINK_PENDING 1 | |
921 | #define TCON_LINK_IN_TREE 2 | |
922 | unsigned long tl_time; | |
923 | atomic_t tl_count; | |
96daf2b0 | 924 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
925 | }; |
926 | ||
9d002df4 | 927 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 928 | |
96daf2b0 | 929 | static inline struct cifs_tcon * |
7ffec372 JL |
930 | tlink_tcon(struct tcon_link *tlink) |
931 | { | |
9d002df4 | 932 | return tlink->tl_tcon; |
7ffec372 JL |
933 | } |
934 | ||
9d002df4 | 935 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 936 | |
13cfb733 JL |
937 | static inline struct tcon_link * |
938 | cifs_get_tlink(struct tcon_link *tlink) | |
939 | { | |
9d002df4 JL |
940 | if (tlink && !IS_ERR(tlink)) |
941 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
942 | return tlink; |
943 | } | |
944 | ||
7ffec372 | 945 | /* This function is always expected to succeed */ |
96daf2b0 | 946 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 947 | |
233839b1 PS |
948 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
949 | ||
950 | struct cifs_pending_open { | |
951 | struct list_head olist; | |
952 | struct tcon_link *tlink; | |
953 | __u8 lease_key[16]; | |
954 | __u32 oplock; | |
955 | }; | |
956 | ||
1da177e4 | 957 | /* |
7ee1af76 JA |
958 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
959 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
960 | */ |
961 | struct cifsLockInfo { | |
7ee1af76 | 962 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
963 | struct list_head blist; /* pointer to locks blocked on this */ |
964 | wait_queue_head_t block_q; | |
7ee1af76 JA |
965 | __u64 offset; |
966 | __u64 length; | |
03776f45 | 967 | __u32 pid; |
04a6aa8a | 968 | __u32 type; |
1da177e4 LT |
969 | }; |
970 | ||
971 | /* | |
972 | * One of these for each open instance of a file | |
973 | */ | |
974 | struct cifs_search_info { | |
975 | loff_t index_of_last_entry; | |
976 | __u16 entries_in_buffer; | |
977 | __u16 info_level; | |
978 | __u32 resume_key; | |
d38d8c74 SF |
979 | char *ntwrk_buf_start; |
980 | char *srch_entries_start; | |
0752f152 | 981 | char *last_entry; |
eaf35b1e | 982 | const char *presume_name; |
1da177e4 | 983 | unsigned int resume_name_len; |
4b18f2a9 SF |
984 | bool endOfSearch:1; |
985 | bool emptyDir:1; | |
986 | bool unicode:1; | |
987 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
988 | }; |
989 | ||
226730b4 PS |
990 | struct cifs_open_parms { |
991 | struct cifs_tcon *tcon; | |
992 | struct cifs_sb_info *cifs_sb; | |
993 | int disposition; | |
994 | int desired_access; | |
995 | int create_options; | |
996 | const char *path; | |
997 | struct cifs_fid *fid; | |
9cbc0b73 | 998 | bool reconnect:1; |
226730b4 PS |
999 | }; |
1000 | ||
4b4de76e PS |
1001 | struct cifs_fid { |
1002 | __u16 netfid; | |
f0df737e PS |
1003 | #ifdef CONFIG_CIFS_SMB2 |
1004 | __u64 persistent_fid; /* persist file id for smb2 */ | |
1005 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1006 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
f0df737e | 1007 | #endif |
233839b1 | 1008 | struct cifs_pending_open *pending_open; |
42873b0a PS |
1009 | unsigned int epoch; |
1010 | bool purge_cache; | |
4b4de76e PS |
1011 | }; |
1012 | ||
f45d3416 PS |
1013 | struct cifs_fid_locks { |
1014 | struct list_head llist; | |
1015 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1016 | struct list_head locks; /* locks held by fid above */ | |
1017 | }; | |
1018 | ||
1da177e4 LT |
1019 | struct cifsFileInfo { |
1020 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
1021 | struct list_head flist; /* next fid (file instance) for this inode */ | |
f45d3416 | 1022 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1023 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1024 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1025 | struct cifs_fid fid; /* file id from remote */ |
1da177e4 LT |
1026 | /* BB add lock scope info here if needed */ ; |
1027 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1028 | struct dentry *dentry; |
15886177 | 1029 | unsigned int f_flags; |
13cfb733 | 1030 | struct tcon_link *tlink; |
4b18f2a9 | 1031 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 1032 | bool oplock_break_cancelled:1; |
6c0f6218 | 1033 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 1034 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1035 | struct cifs_search_info srch_inf; |
9b646972 | 1036 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
1037 | }; |
1038 | ||
fa2989f4 PS |
1039 | struct cifs_io_parms { |
1040 | __u16 netfid; | |
09a4707e PS |
1041 | #ifdef CONFIG_CIFS_SMB2 |
1042 | __u64 persistent_fid; /* persist file id for smb2 */ | |
1043 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
1044 | #endif | |
fa2989f4 PS |
1045 | __u32 pid; |
1046 | __u64 offset; | |
1047 | unsigned int length; | |
96daf2b0 | 1048 | struct cifs_tcon *tcon; |
fa2989f4 PS |
1049 | }; |
1050 | ||
09a4707e PS |
1051 | struct cifs_readdata; |
1052 | ||
1053 | /* asynchronous read support */ | |
1054 | struct cifs_readdata { | |
1055 | struct kref refcount; | |
1056 | struct list_head list; | |
1057 | struct completion done; | |
1058 | struct cifsFileInfo *cfile; | |
1059 | struct address_space *mapping; | |
1060 | __u64 offset; | |
1061 | unsigned int bytes; | |
1062 | pid_t pid; | |
1063 | int result; | |
09a4707e | 1064 | struct work_struct work; |
8321fec4 JL |
1065 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1066 | struct cifs_readdata *rdata, | |
1067 | unsigned int len); | |
5819575e | 1068 | struct kvec iov; |
8321fec4 JL |
1069 | unsigned int pagesz; |
1070 | unsigned int tailsz; | |
c5fab6f4 JL |
1071 | unsigned int nr_pages; |
1072 | struct page *pages[]; | |
09a4707e PS |
1073 | }; |
1074 | ||
33319141 PS |
1075 | struct cifs_writedata; |
1076 | ||
1077 | /* asynchronous write support */ | |
1078 | struct cifs_writedata { | |
1079 | struct kref refcount; | |
1080 | struct list_head list; | |
1081 | struct completion done; | |
1082 | enum writeback_sync_modes sync_mode; | |
1083 | struct work_struct work; | |
1084 | struct cifsFileInfo *cfile; | |
1085 | __u64 offset; | |
1086 | pid_t pid; | |
1087 | unsigned int bytes; | |
1088 | int result; | |
eddb079d JL |
1089 | unsigned int pagesz; |
1090 | unsigned int tailsz; | |
cb7e9eab | 1091 | unsigned int credits; |
33319141 | 1092 | unsigned int nr_pages; |
26c8f0d6 | 1093 | struct page *pages[]; |
33319141 PS |
1094 | }; |
1095 | ||
5f6dbc9e JL |
1096 | /* |
1097 | * Take a reference on the file private data. Must be called with | |
1098 | * cifs_file_list_lock held. | |
1099 | */ | |
764a1b1a JL |
1100 | static inline void |
1101 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1102 | { |
5f6dbc9e | 1103 | ++cifs_file->count; |
6ab409b5 DK |
1104 | } |
1105 | ||
764a1b1a | 1106 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
b33879aa | 1107 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1108 | |
18cceb6a PS |
1109 | #define CIFS_CACHE_READ_FLG 1 |
1110 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1111 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1112 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1113 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1114 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a PS |
1115 | |
1116 | #define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG) | |
53ef1016 | 1117 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
18cceb6a PS |
1118 | #define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG) |
1119 | ||
1da177e4 LT |
1120 | /* |
1121 | * One of these for each file inode | |
1122 | */ | |
1123 | ||
1124 | struct cifsInodeInfo { | |
d59dad2b | 1125 | bool can_cache_brlcks; |
f45d3416 | 1126 | struct list_head llist; /* locks helb by this inode */ |
1b4b55a1 | 1127 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1128 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1129 | struct list_head openFileList; |
1da177e4 | 1130 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1131 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1132 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1133 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1134 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
1135 | #define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */ | |
aff8d5ca JL |
1136 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1137 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1138 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
aff8d5ca | 1139 | unsigned long flags; |
c11f1df5 SP |
1140 | spinlock_t writers_lock; |
1141 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1142 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1143 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1144 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1145 | u64 createtime; /* creation time on server */ |
b8c32dbb PS |
1146 | #ifdef CONFIG_CIFS_SMB2 |
1147 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ | |
1148 | #endif | |
9451a9a5 SJ |
1149 | #ifdef CONFIG_CIFS_FSCACHE |
1150 | struct fscache_cookie *fscache; | |
1151 | #endif | |
1da177e4 LT |
1152 | struct inode vfs_inode; |
1153 | }; | |
1154 | ||
1155 | static inline struct cifsInodeInfo * | |
1156 | CIFS_I(struct inode *inode) | |
1157 | { | |
1158 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1159 | } | |
1160 | ||
1161 | static inline struct cifs_sb_info * | |
1162 | CIFS_SB(struct super_block *sb) | |
1163 | { | |
1164 | return sb->s_fs_info; | |
1165 | } | |
1166 | ||
ab2f218f | 1167 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1168 | { |
1169 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1170 | return '/'; | |
1171 | else | |
1172 | return '\\'; | |
1173 | } | |
1da177e4 | 1174 | |
f87d39d9 SF |
1175 | static inline void |
1176 | convert_delimiter(char *path, char delim) | |
1177 | { | |
1cc9bd68 | 1178 | char old_delim, *pos; |
f87d39d9 SF |
1179 | |
1180 | if (delim == '/') | |
1181 | old_delim = '\\'; | |
1182 | else | |
1183 | old_delim = '/'; | |
1184 | ||
1cc9bd68 SF |
1185 | pos = path; |
1186 | while ((pos = strchr(pos, old_delim))) | |
1187 | *pos = delim; | |
f87d39d9 SF |
1188 | } |
1189 | ||
a4544347 SF |
1190 | #ifdef CONFIG_CIFS_STATS |
1191 | #define cifs_stats_inc atomic_inc | |
1192 | ||
96daf2b0 | 1193 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1194 | unsigned int bytes) |
1195 | { | |
1196 | if (bytes) { | |
1197 | spin_lock(&tcon->stat_lock); | |
1198 | tcon->bytes_written += bytes; | |
1199 | spin_unlock(&tcon->stat_lock); | |
1200 | } | |
1201 | } | |
1202 | ||
96daf2b0 | 1203 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1204 | unsigned int bytes) |
1205 | { | |
1206 | spin_lock(&tcon->stat_lock); | |
1207 | tcon->bytes_read += bytes; | |
1208 | spin_unlock(&tcon->stat_lock); | |
1209 | } | |
1210 | #else | |
1211 | ||
d38d8c74 SF |
1212 | #define cifs_stats_inc(field) do {} while (0) |
1213 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
1214 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
1215 | |
1216 | #endif | |
1217 | ||
2b84a36c JL |
1218 | |
1219 | /* | |
44d22d84 JL |
1220 | * This is the prototype for the mid receive function. This function is for |
1221 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1222 | * just after the MID in struct smb_hdr). Note: | |
1223 | * | |
1224 | * - This will be called by cifsd, with no locks held. | |
1225 | * - The mid will still be on the pending_mid_q. | |
1226 | * - mid->resp_buf will point to the current buffer. | |
1227 | * | |
1228 | * Returns zero on a successful receive, or an error. The receive state in | |
1229 | * the TCP_Server_Info will also be updated. | |
1230 | */ | |
1231 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1232 | struct mid_q_entry *mid); | |
1233 | ||
1234 | /* | |
1235 | * This is the prototype for the mid callback function. This is called once the | |
1236 | * mid has been received off of the socket. When creating one, take special | |
1237 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1238 | * |
3c1105df JL |
1239 | * - it will be called by cifsd, with no locks held |
1240 | * - the mid will be removed from any lists | |
2b84a36c JL |
1241 | */ |
1242 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1243 | ||
1da177e4 LT |
1244 | /* one of these for every pending CIFS request to the server */ |
1245 | struct mid_q_entry { | |
1246 | struct list_head qhead; /* mids waiting on reply from this server */ | |
2dc7e1c0 | 1247 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
1248 | __u64 mid; /* multiplex id */ |
1249 | __u32 pid; /* process id */ | |
1da177e4 | 1250 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1251 | unsigned long when_alloc; /* when mid was created */ |
1252 | #ifdef CONFIG_CIFS_STATS2 | |
1253 | unsigned long when_sent; /* time when smb send finished */ | |
1254 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1255 | #endif | |
44d22d84 | 1256 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c JL |
1257 | mid_callback_t *callback; /* call completion callback */ |
1258 | void *callback_data; /* general purpose pointer for callback */ | |
d4e4854f | 1259 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 PS |
1260 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
1261 | __le16 command; /* smb command code */ | |
1262 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
1263 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1264 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
1265 | }; |
1266 | ||
789e6661 SF |
1267 | /* Make code in transport.c a little cleaner by moving |
1268 | update of optional stats into function below */ | |
1269 | #ifdef CONFIG_CIFS_STATS2 | |
1270 | ||
1271 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1272 | { | |
1273 | atomic_inc(&server->in_send); | |
1274 | } | |
1275 | ||
1276 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1277 | { | |
1278 | atomic_dec(&server->in_send); | |
1279 | } | |
1280 | ||
1281 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1282 | { | |
1283 | atomic_inc(&server->num_waiters); | |
1284 | } | |
1285 | ||
1286 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1287 | { | |
1288 | atomic_dec(&server->num_waiters); | |
1289 | } | |
1290 | ||
1291 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1292 | { | |
1293 | mid->when_sent = jiffies; | |
1294 | } | |
1295 | #else | |
1296 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1297 | { | |
1298 | } | |
1299 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1300 | { | |
1301 | } | |
1302 | ||
1303 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1304 | { | |
1305 | } | |
1306 | ||
1307 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1308 | { | |
1309 | } | |
1310 | ||
1311 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1312 | { | |
1313 | } | |
1314 | #endif | |
1da177e4 | 1315 | |
ff5dbd9e SF |
1316 | /* for pending dnotify requests */ |
1317 | struct dir_notify_req { | |
13cd4b7f SF |
1318 | struct list_head lhead; |
1319 | __le16 Pid; | |
1320 | __le16 PidHigh; | |
1321 | __u16 Mid; | |
1322 | __u16 Tid; | |
1323 | __u16 Uid; | |
1324 | __u16 netfid; | |
1325 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1326 | int multishot; | |
1327 | struct file *pfile; | |
ff5dbd9e SF |
1328 | }; |
1329 | ||
366781c1 SF |
1330 | struct dfs_info3_param { |
1331 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1332 | int path_consumed; |
366781c1 SF |
1333 | int server_type; |
1334 | int ref_flag; | |
1335 | char *path_name; | |
1336 | char *node_name; | |
1337 | }; | |
1338 | ||
cc0bad75 JL |
1339 | /* |
1340 | * common struct for holding inode info when searching for or updating an | |
1341 | * inode with new info | |
1342 | */ | |
1343 | ||
1344 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1345 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1346 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1347 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1348 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
cc0bad75 JL |
1349 | |
1350 | struct cifs_fattr { | |
1351 | u32 cf_flags; | |
1352 | u32 cf_cifsattrs; | |
1353 | u64 cf_uniqueid; | |
1354 | u64 cf_eof; | |
1355 | u64 cf_bytes; | |
20054bd6 | 1356 | u64 cf_createtime; |
4a2c8cf5 EB |
1357 | kuid_t cf_uid; |
1358 | kgid_t cf_gid; | |
cc0bad75 JL |
1359 | umode_t cf_mode; |
1360 | dev_t cf_rdev; | |
1361 | unsigned int cf_nlink; | |
1362 | unsigned int cf_dtype; | |
1363 | struct timespec cf_atime; | |
1364 | struct timespec cf_mtime; | |
1365 | struct timespec cf_ctime; | |
1366 | }; | |
1367 | ||
366781c1 SF |
1368 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1369 | { | |
1370 | if (param) { | |
1371 | kfree(param->path_name); | |
1372 | kfree(param->node_name); | |
1373 | kfree(param); | |
1374 | } | |
1375 | } | |
1376 | ||
1377 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1378 | int number_of_items) | |
1379 | { | |
1380 | int i; | |
1381 | if ((number_of_items == 0) || (param == NULL)) | |
1382 | return; | |
1383 | for (i = 0; i < number_of_items; i++) { | |
1384 | kfree(param[i].path_name); | |
1385 | kfree(param[i].node_name); | |
1386 | } | |
1387 | kfree(param); | |
1388 | } | |
1389 | ||
1da177e4 LT |
1390 | #define MID_FREE 0 |
1391 | #define MID_REQUEST_ALLOCATED 1 | |
1392 | #define MID_REQUEST_SUBMITTED 2 | |
1393 | #define MID_RESPONSE_RECEIVED 4 | |
1394 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1395 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1396 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
1397 | |
1398 | /* Types of response buffer returned from SendReceive2 */ | |
1399 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1400 | #define CIFS_SMALL_BUFFER 1 | |
1401 | #define CIFS_LARGE_BUFFER 2 | |
1402 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1403 | |
133672ef | 1404 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1405 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1406 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1407 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1408 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1409 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1410 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1411 | ||
a891f0f8 PS |
1412 | /* Type of request operation */ |
1413 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1414 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1415 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1416 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
cb7e9eab | 1417 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
a891f0f8 | 1418 | |
3979877e SF |
1419 | /* Security Flags: indicate type of session setup needed */ |
1420 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1421 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1422 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1423 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1424 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1425 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1426 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1427 | #else |
1428 | #define CIFSSEC_MAY_LANMAN 0 | |
1429 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1430 | #endif /* weak passwords */ |
1431 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1432 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1433 | |
1434 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1435 | /* note that only one of the following can be set so the | |
1436 | result of setting MUST flags more than once will be to | |
1437 | require use of the stronger protocol */ | |
1438 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1439 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1440 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1441 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1442 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1443 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1444 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1445 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1446 | #else |
20d1752f | 1447 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1448 | #endif /* UPCALL */ |
0d3a01fa | 1449 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1450 | #define CIFSSEC_MUST_LANMAN 0 |
1451 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1452 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1453 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1454 | #else |
ac683924 | 1455 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1456 | #endif /* UPCALL */ |
3979877e SF |
1457 | #endif /* WEAK_PW_HASH */ |
1458 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1459 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1460 | |
896a8fc2 | 1461 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
ef571cad | 1462 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
ac683924 | 1463 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1464 | /* |
1465 | ***************************************************************** | |
1466 | * All constants go here | |
1467 | ***************************************************************** | |
1468 | */ | |
1469 | ||
1470 | #define UID_HASH (16) | |
1471 | ||
1472 | /* | |
1473 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1474 | * following to be declared. | |
1475 | */ | |
1476 | ||
1477 | /**************************************************************************** | |
1478 | * Locking notes. All updates to global variables and lists should be | |
1479 | * protected by spinlocks or semaphores. | |
1480 | * | |
1481 | * Spinlocks | |
1482 | * --------- | |
1483 | * GlobalMid_Lock protects: | |
1484 | * list operations on pending_mid_q and oplockQ | |
1485 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 1486 | * cifs_file_list_lock protects: |
1da177e4 LT |
1487 | * list operations on tcp and SMB session lists and tCon lists |
1488 | * f_owner.lock protects certain per file struct operations | |
1489 | * mapping->page_lock protects certain per page operations | |
1490 | * | |
1491 | * Semaphores | |
1492 | * ---------- | |
1493 | * sesSem operations on smb session | |
1494 | * tconSem operations on tree connection | |
d38d8c74 | 1495 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1496 | * |
1497 | ****************************************************************************/ | |
1498 | ||
1499 | #ifdef DECLARE_GLOBALS_HERE | |
1500 | #define GLOBAL_EXTERN | |
1501 | #else | |
1502 | #define GLOBAL_EXTERN extern | |
1503 | #endif | |
1504 | ||
e7ddee90 JL |
1505 | /* |
1506 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1507 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1508 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1509 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1510 | * by iterating over cifs_tcp_ses_list |
1511 | */ | |
1512 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1513 | ||
f1987b44 JL |
1514 | /* |
1515 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1516 | * tcp session, and the list of tcon's per smb session. It also protects | |
1517 | * the reference counters for the server, smb session, and tcon. Finally, | |
1518 | * changes to the tcon->tidStatus should be done while holding this lock. | |
1519 | */ | |
3f9bcca7 | 1520 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
1521 | |
1522 | /* | |
1523 | * This lock protects the cifs_file->llist and cifs_file->flist | |
1524 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
1525 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
1526 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
1527 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
1528 | */ | |
4477288a | 1529 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 1530 | |
0eff0e26 | 1531 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1532 | /* Outstanding dir notify requests */ |
1533 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1534 | /* DirNotify response queue */ | |
1535 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1536 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1537 | |
1da177e4 LT |
1538 | /* |
1539 | * Global transaction id (XID) information | |
1540 | */ | |
1541 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1542 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1543 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1544 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1545 | /* on midQ entries */ | |
1da177e4 LT |
1546 | /* |
1547 | * Global counters, updated atomically | |
1548 | */ | |
1549 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1550 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1551 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1552 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1553 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1554 | ||
aaa9bbe0 | 1555 | /* Various Debug counters */ |
4498eed5 SF |
1556 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1557 | #ifdef CONFIG_CIFS_STATS2 | |
1558 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1559 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1560 | #endif | |
1561 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1562 | GLOBAL_EXTERN atomic_t midCount; |
1563 | ||
1564 | /* Misc globals */ | |
5e500ed1 | 1565 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1da177e4 | 1566 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 1567 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1568 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
1569 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1570 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1571 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1572 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1573 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1574 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1575 | ||
21fed0d5 | 1576 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1577 | GLOBAL_EXTERN struct rb_root uidtree; |
1578 | GLOBAL_EXTERN struct rb_root gidtree; | |
1579 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1580 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1581 | GLOBAL_EXTERN struct rb_root siduidtree; |
1582 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1583 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1584 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1585 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1586 | |
9b646972 | 1587 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1588 | |
3bc303c2 | 1589 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1590 | extern struct workqueue_struct *cifsiod_wq; |
abd2e44d | 1591 | |
2dc7e1c0 PS |
1592 | extern mempool_t *cifs_mid_poolp; |
1593 | ||
23db65f5 JL |
1594 | /* Operations for different SMB versions */ |
1595 | #define SMB1_VERSION_STRING "1.0" | |
1596 | extern struct smb_version_operations smb1_operations; | |
1597 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1598 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1599 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1600 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1601 | #define SMB21_VERSION_STRING "2.1" |
1602 | extern struct smb_version_operations smb21_operations; | |
1603 | extern struct smb_version_values smb21_values; | |
e4aa25e7 | 1604 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1605 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1606 | extern struct smb_version_values smb30_values; |
20b6d8b4 SF |
1607 | #define SMB302_VERSION_STRING "3.02" |
1608 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ | |
1609 | extern struct smb_version_values smb302_values; | |
abd2e44d | 1610 | #endif /* _CIFS_GLOB_H */ |