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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
7ee1af76 | 6 | * Jeremy Allison (jra@samba.org) |
1da177e4 LT |
7 | * |
8 | * This library is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as published | |
10 | * by the Free Software Foundation; either version 2.1 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | * the GNU Lesser General Public License for more details. | |
d38d8c74 | 17 | * |
1da177e4 | 18 | */ |
abd2e44d SJ |
19 | #ifndef _CIFS_GLOB_H |
20 | #define _CIFS_GLOB_H | |
21 | ||
1da177e4 LT |
22 | #include <linux/in.h> |
23 | #include <linux/in6.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
2dc7e1c0 | 25 | #include <linux/mempool.h> |
9b646972 | 26 | #include <linux/workqueue.h> |
1da177e4 | 27 | #include "cifs_fs_sb.h" |
442aa310 | 28 | #include "cifsacl.h" |
d2b91521 SP |
29 | #include <crypto/internal/hash.h> |
30 | #include <linux/scatterlist.h> | |
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 | ||
9094fad1 PS |
73 | /* SMB echo "timeout" -- FIXME: tunable? */ |
74 | #define SMB_ECHO_INTERVAL (60 * HZ) | |
75 | ||
1da177e4 LT |
76 | #include "cifspdu.h" |
77 | ||
1da177e4 LT |
78 | #ifndef XATTR_DOS_ATTRIB |
79 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
80 | #endif | |
81 | ||
1da177e4 LT |
82 | /* |
83 | * CIFS vfs client Status information (based on what we know.) | |
84 | */ | |
85 | ||
6c0f6218 | 86 | /* associated with each tcp and smb session */ |
1da177e4 LT |
87 | enum statusEnum { |
88 | CifsNew = 0, | |
89 | CifsGood, | |
90 | CifsExiting, | |
fd88ce93 SF |
91 | CifsNeedReconnect, |
92 | CifsNeedNegotiate | |
1da177e4 LT |
93 | }; |
94 | ||
95 | enum securityEnum { | |
515d82ff JL |
96 | Unspecified = 0, /* not specified */ |
97 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 98 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 99 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 100 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 101 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
102 | }; |
103 | ||
5f98ca9a | 104 | struct session_key { |
b609f06a | 105 | unsigned int len; |
21e73393 | 106 | char *response; |
b609f06a SF |
107 | }; |
108 | ||
d2b91521 SP |
109 | /* crypto security descriptor definition */ |
110 | struct sdesc { | |
111 | struct shash_desc shash; | |
112 | char ctx[]; | |
113 | }; | |
114 | ||
f7c5445a | 115 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
116 | struct cifs_secmech { |
117 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
118 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 119 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 120 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
d2b91521 SP |
121 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
122 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 123 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 124 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
d2b91521 SP |
125 | }; |
126 | ||
d3686d54 | 127 | /* per smb session structure/fields */ |
d2b91521 | 128 | struct ntlmssp_auth { |
5c234aa5 | 129 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
130 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
131 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
132 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 133 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
134 | }; |
135 | ||
442aa310 SF |
136 | struct cifs_cred { |
137 | int uid; | |
138 | int gid; | |
139 | int mode; | |
140 | int cecount; | |
141 | struct cifs_sid osid; | |
142 | struct cifs_sid gsid; | |
143 | struct cifs_ntace *ntaces; | |
144 | struct cifs_ace *aces; | |
145 | }; | |
146 | ||
1da177e4 LT |
147 | /* |
148 | ***************************************************************** | |
149 | * Except the CIFS PDUs themselves all the | |
150 | * globally interesting structs should go here | |
151 | ***************************************************************** | |
152 | */ | |
153 | ||
bf5ea0e2 JL |
154 | /* |
155 | * A smb_rqst represents a complete request to be issued to a server. It's | |
156 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
157 | * to start at the beginning of the first page. | |
158 | */ | |
159 | struct smb_rqst { | |
160 | struct kvec *rq_iov; /* array of kvecs */ | |
161 | unsigned int rq_nvec; /* number of kvecs in array */ | |
162 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
163 | unsigned int rq_npages; /* number pages in array */ | |
164 | unsigned int rq_pagesz; /* page size to use */ | |
165 | unsigned int rq_tailsz; /* length of last page */ | |
166 | }; | |
167 | ||
23db65f5 JL |
168 | enum smb_version { |
169 | Smb_1 = 1, | |
dd446b16 | 170 | Smb_20, |
1080ef75 | 171 | Smb_21, |
e4aa25e7 | 172 | Smb_30, |
20b6d8b4 | 173 | Smb_302, |
5f7fbf73 SF |
174 | #ifdef CONFIG_CIFS_SMB311 |
175 | Smb_311, | |
176 | #endif /* SMB311 */ | |
177 | Smb_version_err | |
23db65f5 JL |
178 | }; |
179 | ||
121b046a JL |
180 | struct mid_q_entry; |
181 | struct TCP_Server_Info; | |
55157dfb | 182 | struct cifsFileInfo; |
082d0642 | 183 | struct cifs_ses; |
2e6e02ab | 184 | struct cifs_tcon; |
b669f33c | 185 | struct dfs_info3_param; |
1208ef1f | 186 | struct cifs_fattr; |
9224dfc2 | 187 | struct smb_vol; |
fb1214e4 | 188 | struct cifs_fid; |
fc9c5966 | 189 | struct cifs_readdata; |
c9de5c80 | 190 | struct cifs_writedata; |
f9c6e234 | 191 | struct cifs_io_parms; |
92fc65a7 | 192 | struct cifs_search_info; |
95a3f2f3 | 193 | struct cifsInodeInfo; |
226730b4 | 194 | struct cifs_open_parms; |
121b046a | 195 | |
23db65f5 | 196 | struct smb_version_operations { |
121b046a JL |
197 | int (*send_cancel)(struct TCP_Server_Info *, void *, |
198 | struct mid_q_entry *); | |
55157dfb | 199 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 200 | /* setup request: allocate mid, sign message */ |
fec344e3 JL |
201 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
202 | struct smb_rqst *); | |
45740847 | 203 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
204 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
205 | struct smb_rqst *); | |
082d0642 PS |
206 | /* check response: verify signature, map error */ |
207 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
208 | bool); | |
a891f0f8 PS |
209 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
210 | const int); | |
45275789 | 211 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
212 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
213 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 214 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
eb378711 PS |
215 | /* data offset from read response message */ |
216 | unsigned int (*read_data_offset)(char *); | |
217 | /* data length from read response message */ | |
218 | unsigned int (*read_data_length)(char *); | |
219 | /* map smb to linux error */ | |
220 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
221 | /* find mid corresponding to the response message */ |
222 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
223 | void (*dump_detail)(void *); | |
44c58186 PS |
224 | void (*clear_stats)(struct cifs_tcon *); |
225 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 226 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e PS |
227 | /* verify the message */ |
228 | int (*check_message)(char *, unsigned int); | |
229 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); | |
c11f1df5 SP |
230 | void (*downgrade_oplock)(struct TCP_Server_Info *, |
231 | struct cifsInodeInfo *, bool); | |
316cf94a PS |
232 | /* process transaction2 response */ |
233 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
234 | char *, int); | |
286170aa PS |
235 | /* check if we need to negotiate */ |
236 | bool (*need_neg)(struct TCP_Server_Info *); | |
237 | /* negotiate to the server */ | |
238 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
239 | /* set negotiated write size */ |
240 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
241 | /* set negotiated read size */ | |
242 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
243 | /* setup smb sessionn */ |
244 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
245 | const struct nls_table *); | |
246 | /* close smb session */ | |
247 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
248 | /* connect to a server share */ |
249 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
250 | struct cifs_tcon *, const struct nls_table *); | |
251 | /* close tree connecion */ | |
252 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
253 | /* get DFS referrals */ |
254 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
255 | const char *, struct dfs_info3_param **, | |
256 | unsigned int *, const struct nls_table *, int); | |
af4281dc PS |
257 | /* informational QFS call */ |
258 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); | |
68889f26 PS |
259 | /* check if a path is accessible or not */ |
260 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
261 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
262 | /* query path data from the server */ |
263 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
264 | struct cifs_sb_info *, const char *, | |
eb85d94b | 265 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
266 | /* query file data from the server */ |
267 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
268 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
269 | /* get server index number */ |
270 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
271 | struct cifs_sb_info *, const char *, | |
272 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
273 | /* set size by path */ |
274 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
275 | const char *, __u64, struct cifs_sb_info *, bool); | |
276 | /* set size by file handle */ | |
277 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
278 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
279 | /* set attributes */ |
280 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
281 | const unsigned int); | |
64a5cfa6 SF |
282 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
283 | struct cifsFileInfo *); | |
f6d76178 PS |
284 | /* check if we can send an echo or nor */ |
285 | bool (*can_echo)(struct TCP_Server_Info *); | |
286 | /* send echo request */ | |
287 | int (*echo)(struct TCP_Server_Info *); | |
f436720e PS |
288 | /* create directory */ |
289 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, | |
290 | struct cifs_sb_info *); | |
291 | /* set info on created directory */ | |
292 | void (*mkdir_setinfo)(struct inode *, const char *, | |
293 | struct cifs_sb_info *, struct cifs_tcon *, | |
294 | const unsigned int); | |
f958ca5d PS |
295 | /* remove directory */ |
296 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
297 | struct cifs_sb_info *); | |
ed6875e0 PS |
298 | /* unlink file */ |
299 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
300 | struct cifs_sb_info *); | |
301 | /* open, rename and delete file */ | |
302 | int (*rename_pending_delete)(const char *, struct dentry *, | |
303 | const unsigned int); | |
8ceb9843 PS |
304 | /* send rename request */ |
305 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
306 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
307 | /* send create hardlink request */ |
308 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
309 | const char *, const char *, | |
310 | struct cifs_sb_info *); | |
b42bf888 PS |
311 | /* query symlink target */ |
312 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
313 | const char *, char **, struct cifs_sb_info *); | |
fb1214e4 | 314 | /* open a file for non-posix mounts */ |
226730b4 PS |
315 | int (*open)(const unsigned int, struct cifs_open_parms *, |
316 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
317 | /* set fid protocol-specific info */ |
318 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 319 | /* close a file */ |
760ad0ca PS |
320 | void (*close)(const unsigned int, struct cifs_tcon *, |
321 | struct cifs_fid *); | |
1d8c4c00 PS |
322 | /* send a flush request to the server */ |
323 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
324 | /* async read from the server */ |
325 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 326 | /* async write to the server */ |
4a5c80d7 SF |
327 | int (*async_writev)(struct cifs_writedata *, |
328 | void (*release)(struct kref *)); | |
f9c6e234 | 329 | /* sync read from the server */ |
db8b631d | 330 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
331 | struct cifs_io_parms *, unsigned int *, char **, |
332 | int *); | |
ba9ad725 | 333 | /* sync write to the server */ |
db8b631d | 334 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
335 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
336 | unsigned long); | |
92fc65a7 PS |
337 | /* open dir, start readdir */ |
338 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
339 | const char *, struct cifs_sb_info *, | |
340 | struct cifs_fid *, __u16, | |
341 | struct cifs_search_info *); | |
342 | /* continue readdir */ | |
343 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
344 | struct cifs_fid *, | |
345 | __u16, struct cifs_search_info *srch_inf); | |
346 | /* close dir */ | |
347 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
348 | struct cifs_fid *); | |
349 | /* calculate a size of SMB message */ | |
350 | unsigned int (*calc_smb_size)(void *); | |
2e44b288 PS |
351 | /* check for STATUS_PENDING and process it in a positive case */ |
352 | bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); | |
95a3f2f3 PS |
353 | /* send oplock break response */ |
354 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
355 | struct cifsInodeInfo *); | |
76ec5e33 PS |
356 | /* query remote filesystem */ |
357 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
358 | struct kstatfs *); | |
d39a4f71 PS |
359 | /* send mandatory brlock to the server */ |
360 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
361 | __u64, __u32, int, int, bool); | |
362 | /* unlock range of mandatory locks */ | |
363 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
364 | const unsigned int); | |
365 | /* push brlocks from the cache to the server */ | |
366 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 367 | /* get lease key of the inode */ |
a41a28bd | 368 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 369 | /* set lease key of the inode */ |
a41a28bd | 370 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 371 | /* generate new lease key */ |
a41a28bd | 372 | void (*new_lease_key)(struct cifs_fid *); |
32811d24 | 373 | int (*generate_signingkey)(struct cifs_ses *); |
53ef1016 | 374 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *); |
b3152e2c SF |
375 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
376 | struct cifsFileInfo *src_file); | |
b5be1a1c SP |
377 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
378 | struct cifs_sb_info *, const unsigned char *, | |
379 | char *, unsigned int *); | |
cbb0aba6 SP |
380 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
381 | struct cifs_sb_info *, const unsigned char *, | |
382 | char *, unsigned int *); | |
53ef1016 PS |
383 | /* if we can do cache read operations */ |
384 | bool (*is_read_op)(__u32); | |
385 | /* set oplock level for the inode */ | |
42873b0a PS |
386 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
387 | bool *); | |
a41a28bd PS |
388 | /* create lease context buffer for CREATE request */ |
389 | char * (*create_lease_buf)(u8 *, u8); | |
42873b0a PS |
390 | /* parse lease context buffer and return oplock/epoch info */ |
391 | __u8 (*parse_lease_buf)(void *, unsigned int *); | |
41c1358e SF |
392 | int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file, |
393 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
394 | u64 dest_off); | |
02b16665 SF |
395 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
396 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
397 | u64 dest_off); | |
ff1c038a | 398 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
399 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
400 | const unsigned char *, const unsigned char *, char *, | |
401 | size_t, const struct nls_table *, int); | |
402 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, | |
403 | const char *, const void *, const __u16, | |
404 | const struct nls_table *, int); | |
83e3bc23 SF |
405 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
406 | const char *, u32 *); | |
42eacf9e SF |
407 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
408 | const struct cifs_fid *, u32 *); | |
83e3bc23 SF |
409 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
410 | int); | |
7f6c5008 PS |
411 | /* writepages retry size */ |
412 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
413 | /* get mtu credits */ |
414 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
415 | unsigned int *, unsigned int *); | |
52755808 PS |
416 | /* check if we need to issue closedir */ |
417 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
418 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
419 | loff_t); | |
23db65f5 JL |
420 | }; |
421 | ||
422 | struct smb_version_values { | |
423 | char *version_string; | |
e4aa25e7 SF |
424 | __u16 protocol_id; |
425 | __u32 req_capabilities; | |
106dc538 PS |
426 | __u32 large_lock_type; |
427 | __u32 exclusive_lock_type; | |
428 | __u32 shared_lock_type; | |
429 | __u32 unlock_lock_type; | |
1887f601 PS |
430 | size_t header_size; |
431 | size_t max_header_size; | |
eb378711 | 432 | size_t read_rsp_size; |
2dc7e1c0 | 433 | __le16 lock_cmd; |
29e20f9c PS |
434 | unsigned int cap_unix; |
435 | unsigned int cap_nt_find; | |
436 | unsigned int cap_large_files; | |
50285882 JL |
437 | __u16 signing_enabled; |
438 | __u16 signing_required; | |
a41a28bd | 439 | size_t create_lease_size; |
23db65f5 JL |
440 | }; |
441 | ||
1887f601 PS |
442 | #define HEADER_SIZE(server) (server->vals->header_size) |
443 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
444 | ||
f87d39d9 SF |
445 | struct smb_vol { |
446 | char *username; | |
447 | char *password; | |
448 | char *domainname; | |
449 | char *UNC; | |
f87d39d9 SF |
450 | char *iocharset; /* local code page for mapping to and from Unicode */ |
451 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
452 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
3da46565 EB |
453 | kuid_t cred_uid; |
454 | kuid_t linux_uid; | |
455 | kgid_t linux_gid; | |
456 | kuid_t backupuid; | |
457 | kgid_t backupgid; | |
5206efd6 AV |
458 | umode_t file_mode; |
459 | umode_t dir_mode; | |
1e3cc57e JL |
460 | enum securityEnum sectype; /* sectype requested via mnt opts */ |
461 | bool sign; /* was signing requested via mnt opts? */ | |
f87d39d9 SF |
462 | bool retry:1; |
463 | bool intr:1; | |
464 | bool setuids:1; | |
465 | bool override_uid:1; | |
466 | bool override_gid:1; | |
467 | bool dynperm:1; | |
468 | bool noperm:1; | |
469 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
470 | bool cifs_acl:1; | |
3d3ea8e6 SP |
471 | bool backupuid_specified; /* mount option backupuid is specified */ |
472 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
473 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
474 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
475 | bool direct_io:1; | |
476 | bool strict_io:1; /* strict cache behavior */ | |
477 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
2baa2682 | 478 | bool sfu_remap:1; /* remap seven reserved chars ala SFU */ |
f87d39d9 SF |
479 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
480 | bool no_linux_ext:1; | |
481 | bool sfu_emul:1; | |
482 | bool nullauth:1; /* attempt to authenticate with null user */ | |
483 | bool nocase:1; /* request case insensitive filenames */ | |
484 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
485 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
486 | bool seal:1; /* request transport encryption on share */ | |
487 | bool nodfs:1; /* Do not request DFS, even if available */ | |
488 | bool local_lease:1; /* check leases only on local system, not remote */ | |
489 | bool noblocksnd:1; | |
490 | bool noautotune:1; | |
491 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
492 | bool fsc:1; /* enable fscache */ | |
493 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
494 | bool multiuser:1; | |
d4ffff1f | 495 | bool rwpidforward:1; /* pid forward for read/write operations */ |
b2a30774 SF |
496 | bool nosharesock:1; |
497 | bool persistent:1; | |
498 | bool nopersistent:1; | |
592fafe6 | 499 | bool resilient:1; /* noresilient not required since not fored for CA */ |
f87d39d9 SF |
500 | unsigned int rsize; |
501 | unsigned int wsize; | |
502 | bool sockopt_tcp_nodelay:1; | |
f87d39d9 | 503 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
23db65f5 JL |
504 | struct smb_version_operations *ops; |
505 | struct smb_version_values *vals; | |
f87d39d9 | 506 | char *prepath; |
b979aaa1 | 507 | struct sockaddr_storage dstaddr; /* destination address */ |
f87d39d9 SF |
508 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
509 | struct nls_table *local_nls; | |
510 | }; | |
511 | ||
25c7f41e PS |
512 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
513 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
514 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 515 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
516 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
517 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
518 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
519 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
520 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
521 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
522 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
523 | |
524 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
525 | MS_NODEV | MS_SYNCHRONOUS) | |
526 | ||
527 | struct cifs_mnt_data { | |
528 | struct cifs_sb_info *cifs_sb; | |
529 | struct smb_vol *vol; | |
530 | int flags; | |
531 | }; | |
532 | ||
792af7b0 PS |
533 | static inline unsigned int |
534 | get_rfc1002_length(void *buf) | |
535 | { | |
dca1c8d1 | 536 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
537 | } |
538 | ||
ec2e4523 PS |
539 | static inline void |
540 | inc_rfc1001_len(void *buf, int count) | |
541 | { | |
542 | be32_add_cpu((__be32 *)buf, count); | |
543 | } | |
544 | ||
1da177e4 | 545 | struct TCP_Server_Info { |
3b795210 SF |
546 | struct list_head tcp_ses_list; |
547 | struct list_head smb_ses_list; | |
e7ddee90 | 548 | int srv_count; /* reference counter */ |
a10faeb2 | 549 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 550 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
551 | struct smb_version_operations *ops; |
552 | struct smb_version_values *vals; | |
c3dccf48 | 553 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 554 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 555 | struct socket *ssocket; |
a9f1b85e | 556 | struct sockaddr_storage dstaddr; |
3eb9a889 | 557 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
558 | #ifdef CONFIG_NET_NS |
559 | struct net *net; | |
560 | #endif | |
d38d8c74 | 561 | wait_queue_head_t response_q; |
1da177e4 LT |
562 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
563 | struct list_head pending_mid_q; | |
edf1ae40 SF |
564 | bool noblocksnd; /* use blocking sendmsg */ |
565 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 566 | bool tcp_nodelay; |
2d86dbc9 | 567 | int credits; /* send no more requests at once */ |
fc40f9cf | 568 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 569 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 570 | struct mutex srv_mutex; |
1da177e4 LT |
571 | struct task_struct *tsk; |
572 | char server_GUID[16]; | |
286170aa | 573 | __u16 sec_mode; |
38d77c50 | 574 | bool sign; /* is signing enabled on this connection? */ |
c3dccf48 | 575 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
576 | #ifdef CONFIG_CIFS_SMB2 |
577 | int echo_credits; /* echo reserved slots */ | |
578 | int oplock_credits; /* oplock break reserved slots */ | |
579 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 580 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
28ea5290 | 581 | #endif |
c3dccf48 | 582 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 583 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
584 | unsigned int maxReq; /* Clients should submit no more */ |
585 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
586 | /* multiplexed reads or writes */ | |
587 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
588 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
589 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
590 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 591 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
592 | /* message size the server can send or receive for */ |
593 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 594 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 595 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 596 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 597 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 598 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 599 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 600 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 601 | struct session_key session_key; |
3a5ff61c | 602 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 603 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
604 | #define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ |
605 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ | |
606 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
607 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 608 | /* extended security flavors that server supports */ |
c3dccf48 JL |
609 | bool sec_ntlmssp; /* supports NTLMSSP */ |
610 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
611 | bool sec_kerberos; /* supports plain Kerberos */ |
612 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 613 | bool large_buf; /* is current buffer large? */ |
c74093b6 | 614 | struct delayed_work echo; /* echo ping workqueue job */ |
1041e3f9 JL |
615 | struct kvec *iov; /* reusable kvec array for receives */ |
616 | unsigned int nr_iov; /* number of kvecs in array */ | |
2a37ef94 JL |
617 | char *smallbuf; /* pointer to current "small" buffer */ |
618 | char *bigbuf; /* pointer to current "big" buffer */ | |
619 | unsigned int total_read; /* total amount of data read in this pass */ | |
488f1d2d SJ |
620 | #ifdef CONFIG_CIFS_FSCACHE |
621 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
622 | #endif | |
c3dccf48 | 623 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 624 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
625 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
626 | #endif | |
ec2e4523 PS |
627 | #ifdef CONFIG_CIFS_SMB2 |
628 | unsigned int max_read; | |
629 | unsigned int max_write; | |
630 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 LT |
631 | }; |
632 | ||
fc40f9cf PS |
633 | static inline unsigned int |
634 | in_flight(struct TCP_Server_Info *server) | |
635 | { | |
636 | unsigned int num; | |
637 | spin_lock(&server->req_lock); | |
638 | num = server->in_flight; | |
639 | spin_unlock(&server->req_lock); | |
640 | return num; | |
641 | } | |
642 | ||
2d86dbc9 | 643 | static inline bool |
bc205ed1 | 644 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 645 | { |
2d86dbc9 | 646 | int num; |
fc40f9cf | 647 | spin_lock(&server->req_lock); |
bc205ed1 | 648 | num = *credits; |
fc40f9cf | 649 | spin_unlock(&server->req_lock); |
2d86dbc9 | 650 | return num > 0; |
fc40f9cf PS |
651 | } |
652 | ||
45275789 | 653 | static inline void |
a891f0f8 PS |
654 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
655 | const int optype) | |
45275789 | 656 | { |
a891f0f8 | 657 | server->ops->add_credits(server, add, optype); |
45275789 PS |
658 | } |
659 | ||
cb7e9eab PS |
660 | static inline void |
661 | add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add, | |
662 | const int optype) | |
663 | { | |
664 | if (add) { | |
665 | server->ops->add_credits(server, add, optype); | |
666 | wake_up(&server->request_q); | |
667 | } | |
668 | } | |
669 | ||
45275789 PS |
670 | static inline void |
671 | set_credits(struct TCP_Server_Info *server, const int val) | |
672 | { | |
673 | server->ops->set_credits(server, val); | |
674 | } | |
675 | ||
9235d098 | 676 | static inline __le64 |
3d378d3f | 677 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 678 | { |
9235d098 | 679 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
680 | } |
681 | ||
3d378d3f TG |
682 | static inline __le16 |
683 | get_next_mid(struct TCP_Server_Info *server) | |
684 | { | |
9235d098 | 685 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
686 | /* |
687 | * The value in the SMB header should be little endian for easy | |
688 | * on-the-wire decoding. | |
689 | */ | |
690 | return cpu_to_le16(mid); | |
691 | } | |
692 | ||
693 | static inline __u16 | |
694 | get_mid(const struct smb_hdr *smb) | |
695 | { | |
696 | return le16_to_cpu(smb->Mid); | |
697 | } | |
698 | ||
699 | static inline bool | |
700 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
701 | { | |
702 | return mid == le16_to_cpu(smb->Mid); | |
703 | } | |
704 | ||
24985c53 PS |
705 | /* |
706 | * When the server supports very large reads and writes via POSIX extensions, | |
707 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
708 | * including the RFC1001 length. | |
709 | * | |
710 | * Note that this might make for "interesting" allocation problems during | |
711 | * writeback however as we have to allocate an array of pointers for the | |
712 | * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. | |
713 | * | |
714 | * For reads, there is a similar problem as we need to allocate an array | |
715 | * of kvecs to handle the receive, though that should only need to be done | |
716 | * once. | |
717 | */ | |
718 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
719 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
720 | ||
721 | /* | |
722 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
723 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
724 | * write up to the maximum size described by RFC1002. | |
725 | */ | |
726 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
727 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
728 | ||
729 | /* | |
730 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
731 | * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill | |
732 | * a single wsize request with a single call. | |
733 | */ | |
734 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
735 | ||
736 | /* | |
737 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
738 | * those values when posix extensions aren't in force. In actuality here, we | |
739 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
740 | * to be ok with the extra byte even though Windows doesn't send writes that | |
741 | * are that large. | |
742 | * | |
743 | * Citation: | |
744 | * | |
745 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
746 | */ | |
747 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
748 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
749 | ||
f1d0c998 RL |
750 | /* |
751 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
752 | * when CONFIG_NET_NS isn't set. | |
753 | */ | |
754 | ||
755 | #ifdef CONFIG_NET_NS | |
756 | ||
757 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
758 | { | |
759 | return srv->net; | |
760 | } | |
761 | ||
762 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
763 | { | |
764 | srv->net = net; | |
765 | } | |
766 | ||
767 | #else | |
768 | ||
769 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
770 | { | |
771 | return &init_net; | |
772 | } | |
773 | ||
774 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
775 | { | |
776 | } | |
777 | ||
778 | #endif | |
779 | ||
1da177e4 LT |
780 | /* |
781 | * Session structure. One of these for each uid session with a particular host | |
782 | */ | |
96daf2b0 | 783 | struct cifs_ses { |
14fbf50d | 784 | struct list_head smb_ses_list; |
3b795210 | 785 | struct list_head tcon_list; |
d7b619cf | 786 | struct mutex session_mutex; |
1da177e4 | 787 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 788 | int ses_count; /* reference counter */ |
1da177e4 | 789 | enum statusEnum status; |
750d1151 | 790 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 | 791 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
ad009ac9 SF |
792 | char *serverOS; /* name of operating system underlying server */ |
793 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 794 | char *serverDomain; /* security realm of server */ |
286170aa | 795 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
796 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
797 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 798 | unsigned int capabilities; |
d38d8c74 | 799 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 800 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
801 | char *user_name; /* must not be null except during init of sess |
802 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
803 | char *domainName; |
804 | char *password; | |
5d0d2882 | 805 | struct session_key auth_key; |
d3686d54 | 806 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
807 | enum securityEnum sectype; /* what security flavor was specified? */ |
808 | bool sign; /* is signing required? */ | |
3b795210 | 809 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
5478f9ba PS |
810 | #ifdef CONFIG_CIFS_SMB2 |
811 | __u16 session_flags; | |
32811d24 | 812 | char smb3signingkey[SMB3_SIGN_KEY_SIZE]; /* for signing smb3 packets */ |
5478f9ba | 813 | #endif /* CONFIG_CIFS_SMB2 */ |
1da177e4 | 814 | }; |
233839b1 | 815 | |
29e20f9c PS |
816 | static inline bool |
817 | cap_unix(struct cifs_ses *ses) | |
818 | { | |
819 | return ses->server->vals->cap_unix & ses->capabilities; | |
820 | } | |
821 | ||
1da177e4 LT |
822 | /* |
823 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 824 | * session |
1da177e4 | 825 | */ |
96daf2b0 | 826 | struct cifs_tcon { |
f1987b44 JL |
827 | struct list_head tcon_list; |
828 | int tc_count; | |
1da177e4 | 829 | struct list_head openFileList; |
96daf2b0 | 830 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 831 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 832 | char *nativeFileSystem; |
00e485b0 | 833 | char *password; /* for share-level security */ |
faaf946a | 834 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
835 | __u16 Flags; /* optional support bits */ |
836 | enum statusEnum tidStatus; | |
1da177e4 LT |
837 | #ifdef CONFIG_CIFS_STATS |
838 | atomic_t num_smbs_sent; | |
44c58186 PS |
839 | union { |
840 | struct { | |
841 | atomic_t num_writes; | |
842 | atomic_t num_reads; | |
843 | atomic_t num_flushes; | |
844 | atomic_t num_oplock_brks; | |
845 | atomic_t num_opens; | |
846 | atomic_t num_closes; | |
847 | atomic_t num_deletes; | |
848 | atomic_t num_mkdirs; | |
849 | atomic_t num_posixopens; | |
850 | atomic_t num_posixmkdirs; | |
851 | atomic_t num_rmdirs; | |
852 | atomic_t num_renames; | |
853 | atomic_t num_t2renames; | |
854 | atomic_t num_ffirst; | |
855 | atomic_t num_fnext; | |
856 | atomic_t num_fclose; | |
857 | atomic_t num_hardlinks; | |
858 | atomic_t num_symlinks; | |
859 | atomic_t num_locks; | |
860 | atomic_t num_acl_get; | |
861 | atomic_t num_acl_set; | |
862 | } cifs_stats; | |
d60622eb PS |
863 | #ifdef CONFIG_CIFS_SMB2 |
864 | struct { | |
865 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
866 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
867 | } smb2_stats; | |
868 | #endif /* CONFIG_CIFS_SMB2 */ | |
44c58186 | 869 | } stats; |
a5a2b489 SF |
870 | #ifdef CONFIG_CIFS_STATS2 |
871 | unsigned long long time_writes; | |
872 | unsigned long long time_reads; | |
873 | unsigned long long time_opens; | |
874 | unsigned long long time_deletes; | |
875 | unsigned long long time_closes; | |
876 | unsigned long long time_mkdirs; | |
877 | unsigned long long time_rmdirs; | |
878 | unsigned long long time_renames; | |
879 | unsigned long long time_t2renames; | |
880 | unsigned long long time_ffirst; | |
881 | unsigned long long time_fnext; | |
882 | unsigned long long time_fclose; | |
883 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
884 | __u64 bytes_read; |
885 | __u64 bytes_written; | |
886 | spinlock_t stat_lock; | |
a5a2b489 | 887 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 888 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 889 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 890 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
891 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
892 | bool retry:1; | |
893 | bool nocase:1; | |
95b1cb90 | 894 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 895 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 896 | for this mount even if server would support */ |
84210e91 | 897 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 898 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 899 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 900 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
592fafe6 | 901 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 902 | bool use_persistent:1; /* use persistent instead of durable handles */ |
faaf946a PS |
903 | #ifdef CONFIG_CIFS_SMB2 |
904 | bool print:1; /* set if connection to printer share */ | |
905 | bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ | |
769ee6a4 | 906 | __le32 capabilities; |
faaf946a PS |
907 | __u32 share_flags; |
908 | __u32 maximal_access; | |
909 | __u32 vol_serial_number; | |
910 | __le64 vol_create_time; | |
af6a12ea SF |
911 | __u32 ss_flags; /* sector size flags */ |
912 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
913 | __u32 max_chunks; |
914 | __u32 max_bytes_chunk; | |
915 | __u32 max_bytes_copy; | |
faaf946a | 916 | #endif /* CONFIG_CIFS_SMB2 */ |
d03382ce SJ |
917 | #ifdef CONFIG_CIFS_FSCACHE |
918 | u64 resource_id; /* server resource id */ | |
919 | struct fscache_cookie *fscache; /* cookie for share */ | |
920 | #endif | |
233839b1 | 921 | struct list_head pending_opens; /* list of incomplete opens */ |
c18c842b | 922 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
923 | }; |
924 | ||
7ffec372 JL |
925 | /* |
926 | * This is a refcounted and timestamped container for a tcon pointer. The | |
927 | * container holds a tcon reference. It is considered safe to free one of | |
928 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
929 | * "get" on the container. | |
930 | */ | |
931 | struct tcon_link { | |
b647c35f | 932 | struct rb_node tl_rbnode; |
6d4a0832 | 933 | kuid_t tl_uid; |
9d002df4 JL |
934 | unsigned long tl_flags; |
935 | #define TCON_LINK_MASTER 0 | |
936 | #define TCON_LINK_PENDING 1 | |
937 | #define TCON_LINK_IN_TREE 2 | |
938 | unsigned long tl_time; | |
939 | atomic_t tl_count; | |
96daf2b0 | 940 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
941 | }; |
942 | ||
9d002df4 | 943 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 944 | |
96daf2b0 | 945 | static inline struct cifs_tcon * |
7ffec372 JL |
946 | tlink_tcon(struct tcon_link *tlink) |
947 | { | |
9d002df4 | 948 | return tlink->tl_tcon; |
7ffec372 JL |
949 | } |
950 | ||
9d002df4 | 951 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 952 | |
13cfb733 JL |
953 | static inline struct tcon_link * |
954 | cifs_get_tlink(struct tcon_link *tlink) | |
955 | { | |
9d002df4 JL |
956 | if (tlink && !IS_ERR(tlink)) |
957 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
958 | return tlink; |
959 | } | |
960 | ||
7ffec372 | 961 | /* This function is always expected to succeed */ |
96daf2b0 | 962 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 963 | |
233839b1 PS |
964 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
965 | ||
966 | struct cifs_pending_open { | |
967 | struct list_head olist; | |
968 | struct tcon_link *tlink; | |
969 | __u8 lease_key[16]; | |
970 | __u32 oplock; | |
971 | }; | |
972 | ||
1da177e4 | 973 | /* |
7ee1af76 JA |
974 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
975 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
976 | */ |
977 | struct cifsLockInfo { | |
7ee1af76 | 978 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
979 | struct list_head blist; /* pointer to locks blocked on this */ |
980 | wait_queue_head_t block_q; | |
7ee1af76 JA |
981 | __u64 offset; |
982 | __u64 length; | |
03776f45 | 983 | __u32 pid; |
04a6aa8a | 984 | __u32 type; |
1da177e4 LT |
985 | }; |
986 | ||
987 | /* | |
988 | * One of these for each open instance of a file | |
989 | */ | |
990 | struct cifs_search_info { | |
991 | loff_t index_of_last_entry; | |
992 | __u16 entries_in_buffer; | |
993 | __u16 info_level; | |
994 | __u32 resume_key; | |
d38d8c74 SF |
995 | char *ntwrk_buf_start; |
996 | char *srch_entries_start; | |
0752f152 | 997 | char *last_entry; |
eaf35b1e | 998 | const char *presume_name; |
1da177e4 | 999 | unsigned int resume_name_len; |
4b18f2a9 SF |
1000 | bool endOfSearch:1; |
1001 | bool emptyDir:1; | |
1002 | bool unicode:1; | |
1003 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1004 | }; |
1005 | ||
226730b4 PS |
1006 | struct cifs_open_parms { |
1007 | struct cifs_tcon *tcon; | |
1008 | struct cifs_sb_info *cifs_sb; | |
1009 | int disposition; | |
1010 | int desired_access; | |
1011 | int create_options; | |
1012 | const char *path; | |
1013 | struct cifs_fid *fid; | |
9cbc0b73 | 1014 | bool reconnect:1; |
226730b4 PS |
1015 | }; |
1016 | ||
4b4de76e PS |
1017 | struct cifs_fid { |
1018 | __u16 netfid; | |
f0df737e PS |
1019 | #ifdef CONFIG_CIFS_SMB2 |
1020 | __u64 persistent_fid; /* persist file id for smb2 */ | |
1021 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1022 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1023 | __u8 create_guid[16]; |
f0df737e | 1024 | #endif |
233839b1 | 1025 | struct cifs_pending_open *pending_open; |
42873b0a PS |
1026 | unsigned int epoch; |
1027 | bool purge_cache; | |
4b4de76e PS |
1028 | }; |
1029 | ||
f45d3416 PS |
1030 | struct cifs_fid_locks { |
1031 | struct list_head llist; | |
1032 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1033 | struct list_head locks; /* locks held by fid above */ | |
1034 | }; | |
1035 | ||
1da177e4 LT |
1036 | struct cifsFileInfo { |
1037 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
1038 | struct list_head flist; /* next fid (file instance) for this inode */ | |
f45d3416 | 1039 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1040 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1041 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1042 | struct cifs_fid fid; /* file id from remote */ |
1da177e4 LT |
1043 | /* BB add lock scope info here if needed */ ; |
1044 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1045 | struct dentry *dentry; |
15886177 | 1046 | unsigned int f_flags; |
13cfb733 | 1047 | struct tcon_link *tlink; |
4b18f2a9 | 1048 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 1049 | bool oplock_break_cancelled:1; |
6c0f6218 | 1050 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 1051 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1052 | struct cifs_search_info srch_inf; |
9b646972 | 1053 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
1054 | }; |
1055 | ||
fa2989f4 PS |
1056 | struct cifs_io_parms { |
1057 | __u16 netfid; | |
09a4707e PS |
1058 | #ifdef CONFIG_CIFS_SMB2 |
1059 | __u64 persistent_fid; /* persist file id for smb2 */ | |
1060 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
1061 | #endif | |
fa2989f4 PS |
1062 | __u32 pid; |
1063 | __u64 offset; | |
1064 | unsigned int length; | |
96daf2b0 | 1065 | struct cifs_tcon *tcon; |
fa2989f4 PS |
1066 | }; |
1067 | ||
09a4707e PS |
1068 | struct cifs_readdata; |
1069 | ||
1070 | /* asynchronous read support */ | |
1071 | struct cifs_readdata { | |
1072 | struct kref refcount; | |
1073 | struct list_head list; | |
1074 | struct completion done; | |
1075 | struct cifsFileInfo *cfile; | |
1076 | struct address_space *mapping; | |
1077 | __u64 offset; | |
1078 | unsigned int bytes; | |
34a54d61 | 1079 | unsigned int got_bytes; |
09a4707e PS |
1080 | pid_t pid; |
1081 | int result; | |
09a4707e | 1082 | struct work_struct work; |
8321fec4 JL |
1083 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1084 | struct cifs_readdata *rdata, | |
1085 | unsigned int len); | |
5819575e | 1086 | struct kvec iov; |
8321fec4 JL |
1087 | unsigned int pagesz; |
1088 | unsigned int tailsz; | |
bed9da02 | 1089 | unsigned int credits; |
c5fab6f4 JL |
1090 | unsigned int nr_pages; |
1091 | struct page *pages[]; | |
09a4707e PS |
1092 | }; |
1093 | ||
33319141 PS |
1094 | struct cifs_writedata; |
1095 | ||
1096 | /* asynchronous write support */ | |
1097 | struct cifs_writedata { | |
1098 | struct kref refcount; | |
1099 | struct list_head list; | |
1100 | struct completion done; | |
1101 | enum writeback_sync_modes sync_mode; | |
1102 | struct work_struct work; | |
1103 | struct cifsFileInfo *cfile; | |
1104 | __u64 offset; | |
1105 | pid_t pid; | |
1106 | unsigned int bytes; | |
1107 | int result; | |
eddb079d JL |
1108 | unsigned int pagesz; |
1109 | unsigned int tailsz; | |
cb7e9eab | 1110 | unsigned int credits; |
33319141 | 1111 | unsigned int nr_pages; |
26c8f0d6 | 1112 | struct page *pages[]; |
33319141 PS |
1113 | }; |
1114 | ||
5f6dbc9e JL |
1115 | /* |
1116 | * Take a reference on the file private data. Must be called with | |
1117 | * cifs_file_list_lock held. | |
1118 | */ | |
764a1b1a JL |
1119 | static inline void |
1120 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1121 | { |
5f6dbc9e | 1122 | ++cifs_file->count; |
6ab409b5 DK |
1123 | } |
1124 | ||
764a1b1a | 1125 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
b33879aa | 1126 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1127 | |
18cceb6a PS |
1128 | #define CIFS_CACHE_READ_FLG 1 |
1129 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1130 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1131 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1132 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1133 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a PS |
1134 | |
1135 | #define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG) | |
53ef1016 | 1136 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
18cceb6a PS |
1137 | #define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG) |
1138 | ||
1da177e4 LT |
1139 | /* |
1140 | * One of these for each file inode | |
1141 | */ | |
1142 | ||
1143 | struct cifsInodeInfo { | |
d59dad2b | 1144 | bool can_cache_brlcks; |
f45d3416 | 1145 | struct list_head llist; /* locks helb by this inode */ |
1b4b55a1 | 1146 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1147 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1148 | struct list_head openFileList; |
1da177e4 | 1149 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1150 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1151 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1152 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1153 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
1154 | #define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */ | |
aff8d5ca JL |
1155 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1156 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1157 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
aff8d5ca | 1158 | unsigned long flags; |
c11f1df5 SP |
1159 | spinlock_t writers_lock; |
1160 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1161 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1162 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1163 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1164 | u64 createtime; /* creation time on server */ |
b8c32dbb PS |
1165 | #ifdef CONFIG_CIFS_SMB2 |
1166 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ | |
1167 | #endif | |
9451a9a5 SJ |
1168 | #ifdef CONFIG_CIFS_FSCACHE |
1169 | struct fscache_cookie *fscache; | |
1170 | #endif | |
1da177e4 LT |
1171 | struct inode vfs_inode; |
1172 | }; | |
1173 | ||
1174 | static inline struct cifsInodeInfo * | |
1175 | CIFS_I(struct inode *inode) | |
1176 | { | |
1177 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1178 | } | |
1179 | ||
1180 | static inline struct cifs_sb_info * | |
1181 | CIFS_SB(struct super_block *sb) | |
1182 | { | |
1183 | return sb->s_fs_info; | |
1184 | } | |
1185 | ||
7119e220 AV |
1186 | static inline struct cifs_sb_info * |
1187 | CIFS_FILE_SB(struct file *file) | |
1188 | { | |
1189 | return CIFS_SB(file_inode(file)->i_sb); | |
1190 | } | |
1191 | ||
ab2f218f | 1192 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1193 | { |
1194 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1195 | return '/'; | |
1196 | else | |
1197 | return '\\'; | |
1198 | } | |
1da177e4 | 1199 | |
f87d39d9 SF |
1200 | static inline void |
1201 | convert_delimiter(char *path, char delim) | |
1202 | { | |
1cc9bd68 | 1203 | char old_delim, *pos; |
f87d39d9 SF |
1204 | |
1205 | if (delim == '/') | |
1206 | old_delim = '\\'; | |
1207 | else | |
1208 | old_delim = '/'; | |
1209 | ||
1cc9bd68 SF |
1210 | pos = path; |
1211 | while ((pos = strchr(pos, old_delim))) | |
1212 | *pos = delim; | |
f87d39d9 SF |
1213 | } |
1214 | ||
a4544347 SF |
1215 | #ifdef CONFIG_CIFS_STATS |
1216 | #define cifs_stats_inc atomic_inc | |
1217 | ||
96daf2b0 | 1218 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1219 | unsigned int bytes) |
1220 | { | |
1221 | if (bytes) { | |
1222 | spin_lock(&tcon->stat_lock); | |
1223 | tcon->bytes_written += bytes; | |
1224 | spin_unlock(&tcon->stat_lock); | |
1225 | } | |
1226 | } | |
1227 | ||
96daf2b0 | 1228 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1229 | unsigned int bytes) |
1230 | { | |
1231 | spin_lock(&tcon->stat_lock); | |
1232 | tcon->bytes_read += bytes; | |
1233 | spin_unlock(&tcon->stat_lock); | |
1234 | } | |
1235 | #else | |
1236 | ||
d38d8c74 SF |
1237 | #define cifs_stats_inc(field) do {} while (0) |
1238 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
1239 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
1240 | |
1241 | #endif | |
1242 | ||
2b84a36c JL |
1243 | |
1244 | /* | |
44d22d84 JL |
1245 | * This is the prototype for the mid receive function. This function is for |
1246 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1247 | * just after the MID in struct smb_hdr). Note: | |
1248 | * | |
1249 | * - This will be called by cifsd, with no locks held. | |
1250 | * - The mid will still be on the pending_mid_q. | |
1251 | * - mid->resp_buf will point to the current buffer. | |
1252 | * | |
1253 | * Returns zero on a successful receive, or an error. The receive state in | |
1254 | * the TCP_Server_Info will also be updated. | |
1255 | */ | |
1256 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1257 | struct mid_q_entry *mid); | |
1258 | ||
1259 | /* | |
1260 | * This is the prototype for the mid callback function. This is called once the | |
1261 | * mid has been received off of the socket. When creating one, take special | |
1262 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1263 | * |
3c1105df JL |
1264 | * - it will be called by cifsd, with no locks held |
1265 | * - the mid will be removed from any lists | |
2b84a36c JL |
1266 | */ |
1267 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1268 | ||
1da177e4 LT |
1269 | /* one of these for every pending CIFS request to the server */ |
1270 | struct mid_q_entry { | |
1271 | struct list_head qhead; /* mids waiting on reply from this server */ | |
2dc7e1c0 | 1272 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
1273 | __u64 mid; /* multiplex id */ |
1274 | __u32 pid; /* process id */ | |
1da177e4 | 1275 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1276 | unsigned long when_alloc; /* when mid was created */ |
1277 | #ifdef CONFIG_CIFS_STATS2 | |
1278 | unsigned long when_sent; /* time when smb send finished */ | |
1279 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1280 | #endif | |
44d22d84 | 1281 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c JL |
1282 | mid_callback_t *callback; /* call completion callback */ |
1283 | void *callback_data; /* general purpose pointer for callback */ | |
d4e4854f | 1284 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 PS |
1285 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
1286 | __le16 command; /* smb command code */ | |
1287 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
1288 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1289 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
1290 | }; |
1291 | ||
789e6661 SF |
1292 | /* Make code in transport.c a little cleaner by moving |
1293 | update of optional stats into function below */ | |
1294 | #ifdef CONFIG_CIFS_STATS2 | |
1295 | ||
1296 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1297 | { | |
1298 | atomic_inc(&server->in_send); | |
1299 | } | |
1300 | ||
1301 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1302 | { | |
1303 | atomic_dec(&server->in_send); | |
1304 | } | |
1305 | ||
1306 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1307 | { | |
1308 | atomic_inc(&server->num_waiters); | |
1309 | } | |
1310 | ||
1311 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1312 | { | |
1313 | atomic_dec(&server->num_waiters); | |
1314 | } | |
1315 | ||
1316 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1317 | { | |
1318 | mid->when_sent = jiffies; | |
1319 | } | |
1320 | #else | |
1321 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1322 | { | |
1323 | } | |
1324 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1325 | { | |
1326 | } | |
1327 | ||
1328 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1329 | { | |
1330 | } | |
1331 | ||
1332 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1333 | { | |
1334 | } | |
1335 | ||
1336 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1337 | { | |
1338 | } | |
1339 | #endif | |
1da177e4 | 1340 | |
ff5dbd9e SF |
1341 | /* for pending dnotify requests */ |
1342 | struct dir_notify_req { | |
13cd4b7f SF |
1343 | struct list_head lhead; |
1344 | __le16 Pid; | |
1345 | __le16 PidHigh; | |
1346 | __u16 Mid; | |
1347 | __u16 Tid; | |
1348 | __u16 Uid; | |
1349 | __u16 netfid; | |
1350 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1351 | int multishot; | |
1352 | struct file *pfile; | |
ff5dbd9e SF |
1353 | }; |
1354 | ||
366781c1 SF |
1355 | struct dfs_info3_param { |
1356 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1357 | int path_consumed; |
366781c1 SF |
1358 | int server_type; |
1359 | int ref_flag; | |
1360 | char *path_name; | |
1361 | char *node_name; | |
1362 | }; | |
1363 | ||
cc0bad75 JL |
1364 | /* |
1365 | * common struct for holding inode info when searching for or updating an | |
1366 | * inode with new info | |
1367 | */ | |
1368 | ||
1369 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1370 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1371 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1372 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1373 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
cc0bad75 JL |
1374 | |
1375 | struct cifs_fattr { | |
1376 | u32 cf_flags; | |
1377 | u32 cf_cifsattrs; | |
1378 | u64 cf_uniqueid; | |
1379 | u64 cf_eof; | |
1380 | u64 cf_bytes; | |
20054bd6 | 1381 | u64 cf_createtime; |
4a2c8cf5 EB |
1382 | kuid_t cf_uid; |
1383 | kgid_t cf_gid; | |
cc0bad75 JL |
1384 | umode_t cf_mode; |
1385 | dev_t cf_rdev; | |
1386 | unsigned int cf_nlink; | |
1387 | unsigned int cf_dtype; | |
1388 | struct timespec cf_atime; | |
1389 | struct timespec cf_mtime; | |
1390 | struct timespec cf_ctime; | |
1391 | }; | |
1392 | ||
366781c1 SF |
1393 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1394 | { | |
1395 | if (param) { | |
1396 | kfree(param->path_name); | |
1397 | kfree(param->node_name); | |
1398 | kfree(param); | |
1399 | } | |
1400 | } | |
1401 | ||
1402 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1403 | int number_of_items) | |
1404 | { | |
1405 | int i; | |
1406 | if ((number_of_items == 0) || (param == NULL)) | |
1407 | return; | |
1408 | for (i = 0; i < number_of_items; i++) { | |
1409 | kfree(param[i].path_name); | |
1410 | kfree(param[i].node_name); | |
1411 | } | |
1412 | kfree(param); | |
1413 | } | |
1414 | ||
1da177e4 LT |
1415 | #define MID_FREE 0 |
1416 | #define MID_REQUEST_ALLOCATED 1 | |
1417 | #define MID_REQUEST_SUBMITTED 2 | |
1418 | #define MID_RESPONSE_RECEIVED 4 | |
1419 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1420 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1421 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
1422 | |
1423 | /* Types of response buffer returned from SendReceive2 */ | |
1424 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1425 | #define CIFS_SMALL_BUFFER 1 | |
1426 | #define CIFS_LARGE_BUFFER 2 | |
1427 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1428 | |
133672ef | 1429 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1430 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1431 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1432 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1433 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1434 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1435 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1436 | ||
a891f0f8 PS |
1437 | /* Type of request operation */ |
1438 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1439 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1440 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1441 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
cb7e9eab | 1442 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
a891f0f8 | 1443 | |
3979877e SF |
1444 | /* Security Flags: indicate type of session setup needed */ |
1445 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1446 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1447 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1448 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1449 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1450 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1451 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1452 | #else |
1453 | #define CIFSSEC_MAY_LANMAN 0 | |
1454 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1455 | #endif /* weak passwords */ |
1456 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1457 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1458 | |
1459 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1460 | /* note that only one of the following can be set so the | |
1461 | result of setting MUST flags more than once will be to | |
1462 | require use of the stronger protocol */ | |
1463 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1464 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1465 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1466 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1467 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1468 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1469 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1470 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1471 | #else |
20d1752f | 1472 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1473 | #endif /* UPCALL */ |
0d3a01fa | 1474 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1475 | #define CIFSSEC_MUST_LANMAN 0 |
1476 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1477 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1478 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1479 | #else |
ac683924 | 1480 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1481 | #endif /* UPCALL */ |
3979877e SF |
1482 | #endif /* WEAK_PW_HASH */ |
1483 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1484 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1485 | |
896a8fc2 | 1486 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
ef571cad | 1487 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
ac683924 | 1488 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1489 | /* |
1490 | ***************************************************************** | |
1491 | * All constants go here | |
1492 | ***************************************************************** | |
1493 | */ | |
1494 | ||
1495 | #define UID_HASH (16) | |
1496 | ||
1497 | /* | |
1498 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1499 | * following to be declared. | |
1500 | */ | |
1501 | ||
1502 | /**************************************************************************** | |
1503 | * Locking notes. All updates to global variables and lists should be | |
1504 | * protected by spinlocks or semaphores. | |
1505 | * | |
1506 | * Spinlocks | |
1507 | * --------- | |
1508 | * GlobalMid_Lock protects: | |
1509 | * list operations on pending_mid_q and oplockQ | |
1510 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 1511 | * cifs_file_list_lock protects: |
1da177e4 LT |
1512 | * list operations on tcp and SMB session lists and tCon lists |
1513 | * f_owner.lock protects certain per file struct operations | |
1514 | * mapping->page_lock protects certain per page operations | |
1515 | * | |
1516 | * Semaphores | |
1517 | * ---------- | |
1518 | * sesSem operations on smb session | |
1519 | * tconSem operations on tree connection | |
d38d8c74 | 1520 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1521 | * |
1522 | ****************************************************************************/ | |
1523 | ||
1524 | #ifdef DECLARE_GLOBALS_HERE | |
1525 | #define GLOBAL_EXTERN | |
1526 | #else | |
1527 | #define GLOBAL_EXTERN extern | |
1528 | #endif | |
1529 | ||
e7ddee90 JL |
1530 | /* |
1531 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1532 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1533 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1534 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1535 | * by iterating over cifs_tcp_ses_list |
1536 | */ | |
1537 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1538 | ||
f1987b44 JL |
1539 | /* |
1540 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1541 | * tcp session, and the list of tcon's per smb session. It also protects | |
1542 | * the reference counters for the server, smb session, and tcon. Finally, | |
1543 | * changes to the tcon->tidStatus should be done while holding this lock. | |
1544 | */ | |
3f9bcca7 | 1545 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
1546 | |
1547 | /* | |
1548 | * This lock protects the cifs_file->llist and cifs_file->flist | |
1549 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
1550 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
1551 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
1552 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
1553 | */ | |
4477288a | 1554 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 1555 | |
0eff0e26 | 1556 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1557 | /* Outstanding dir notify requests */ |
1558 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1559 | /* DirNotify response queue */ | |
1560 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1561 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1562 | |
1da177e4 LT |
1563 | /* |
1564 | * Global transaction id (XID) information | |
1565 | */ | |
1566 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1567 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1568 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1569 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1570 | /* on midQ entries */ | |
1da177e4 LT |
1571 | /* |
1572 | * Global counters, updated atomically | |
1573 | */ | |
1574 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1575 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1576 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1577 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1578 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1579 | ||
aaa9bbe0 | 1580 | /* Various Debug counters */ |
4498eed5 SF |
1581 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1582 | #ifdef CONFIG_CIFS_STATS2 | |
1583 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1584 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1585 | #endif | |
1586 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1587 | GLOBAL_EXTERN atomic_t midCount; |
1588 | ||
1589 | /* Misc globals */ | |
5e500ed1 | 1590 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1da177e4 | 1591 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 1592 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1593 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
1594 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1595 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1596 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1597 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1598 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1599 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1600 | ||
21fed0d5 | 1601 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1602 | GLOBAL_EXTERN struct rb_root uidtree; |
1603 | GLOBAL_EXTERN struct rb_root gidtree; | |
1604 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1605 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1606 | GLOBAL_EXTERN struct rb_root siduidtree; |
1607 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1608 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1609 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1610 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1611 | |
9b646972 | 1612 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1613 | |
3bc303c2 | 1614 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1615 | extern struct workqueue_struct *cifsiod_wq; |
abd2e44d | 1616 | |
2dc7e1c0 PS |
1617 | extern mempool_t *cifs_mid_poolp; |
1618 | ||
23db65f5 JL |
1619 | /* Operations for different SMB versions */ |
1620 | #define SMB1_VERSION_STRING "1.0" | |
1621 | extern struct smb_version_operations smb1_operations; | |
1622 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1623 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1624 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1625 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1626 | #define SMB21_VERSION_STRING "2.1" |
1627 | extern struct smb_version_operations smb21_operations; | |
1628 | extern struct smb_version_values smb21_values; | |
e4aa25e7 | 1629 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1630 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1631 | extern struct smb_version_values smb30_values; |
20b6d8b4 SF |
1632 | #define SMB302_VERSION_STRING "3.02" |
1633 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ | |
1634 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1635 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1636 | #define ALT_SMB311_VERSION_STRING "3.11" |
1637 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1638 | extern struct smb_version_values smb311_values; |
abd2e44d | 1639 | #endif /* _CIFS_GLOB_H */ |