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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 | ||
adfeb3e0 SF |
73 | /* echo interval in seconds */ |
74 | #define SMB_ECHO_INTERVAL_MIN 1 | |
75 | #define SMB_ECHO_INTERVAL_MAX 600 | |
76 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 77 | |
1da177e4 LT |
78 | #include "cifspdu.h" |
79 | ||
1da177e4 LT |
80 | #ifndef XATTR_DOS_ATTRIB |
81 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
82 | #endif | |
83 | ||
1da177e4 LT |
84 | /* |
85 | * CIFS vfs client Status information (based on what we know.) | |
86 | */ | |
87 | ||
6c0f6218 | 88 | /* associated with each tcp and smb session */ |
1da177e4 LT |
89 | enum statusEnum { |
90 | CifsNew = 0, | |
91 | CifsGood, | |
92 | CifsExiting, | |
fd88ce93 SF |
93 | CifsNeedReconnect, |
94 | CifsNeedNegotiate | |
1da177e4 LT |
95 | }; |
96 | ||
97 | enum securityEnum { | |
515d82ff JL |
98 | Unspecified = 0, /* not specified */ |
99 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 100 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 101 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 102 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 103 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
104 | }; |
105 | ||
5f98ca9a | 106 | struct session_key { |
b609f06a | 107 | unsigned int len; |
21e73393 | 108 | char *response; |
b609f06a SF |
109 | }; |
110 | ||
d2b91521 SP |
111 | /* crypto security descriptor definition */ |
112 | struct sdesc { | |
113 | struct shash_desc shash; | |
114 | char ctx[]; | |
115 | }; | |
116 | ||
f7c5445a | 117 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
118 | struct cifs_secmech { |
119 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
120 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 121 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 122 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
d2b91521 SP |
123 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
124 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 125 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 126 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
d2b91521 SP |
127 | }; |
128 | ||
d3686d54 | 129 | /* per smb session structure/fields */ |
d2b91521 | 130 | struct ntlmssp_auth { |
5c234aa5 | 131 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
132 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
133 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
134 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 135 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
136 | }; |
137 | ||
442aa310 SF |
138 | struct cifs_cred { |
139 | int uid; | |
140 | int gid; | |
141 | int mode; | |
142 | int cecount; | |
143 | struct cifs_sid osid; | |
144 | struct cifs_sid gsid; | |
145 | struct cifs_ntace *ntaces; | |
146 | struct cifs_ace *aces; | |
147 | }; | |
148 | ||
1da177e4 LT |
149 | /* |
150 | ***************************************************************** | |
151 | * Except the CIFS PDUs themselves all the | |
152 | * globally interesting structs should go here | |
153 | ***************************************************************** | |
154 | */ | |
155 | ||
bf5ea0e2 JL |
156 | /* |
157 | * A smb_rqst represents a complete request to be issued to a server. It's | |
158 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
159 | * to start at the beginning of the first page. | |
160 | */ | |
161 | struct smb_rqst { | |
162 | struct kvec *rq_iov; /* array of kvecs */ | |
163 | unsigned int rq_nvec; /* number of kvecs in array */ | |
164 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
165 | unsigned int rq_npages; /* number pages in array */ | |
166 | unsigned int rq_pagesz; /* page size to use */ | |
167 | unsigned int rq_tailsz; /* length of last page */ | |
168 | }; | |
169 | ||
23db65f5 JL |
170 | enum smb_version { |
171 | Smb_1 = 1, | |
dd446b16 | 172 | Smb_20, |
1080ef75 | 173 | Smb_21, |
e4aa25e7 | 174 | Smb_30, |
20b6d8b4 | 175 | Smb_302, |
5f7fbf73 SF |
176 | #ifdef CONFIG_CIFS_SMB311 |
177 | Smb_311, | |
178 | #endif /* SMB311 */ | |
179 | Smb_version_err | |
23db65f5 JL |
180 | }; |
181 | ||
121b046a JL |
182 | struct mid_q_entry; |
183 | struct TCP_Server_Info; | |
55157dfb | 184 | struct cifsFileInfo; |
082d0642 | 185 | struct cifs_ses; |
2e6e02ab | 186 | struct cifs_tcon; |
b669f33c | 187 | struct dfs_info3_param; |
1208ef1f | 188 | struct cifs_fattr; |
9224dfc2 | 189 | struct smb_vol; |
fb1214e4 | 190 | struct cifs_fid; |
fc9c5966 | 191 | struct cifs_readdata; |
c9de5c80 | 192 | struct cifs_writedata; |
f9c6e234 | 193 | struct cifs_io_parms; |
92fc65a7 | 194 | struct cifs_search_info; |
95a3f2f3 | 195 | struct cifsInodeInfo; |
226730b4 | 196 | struct cifs_open_parms; |
121b046a | 197 | |
23db65f5 | 198 | struct smb_version_operations { |
121b046a JL |
199 | int (*send_cancel)(struct TCP_Server_Info *, void *, |
200 | struct mid_q_entry *); | |
55157dfb | 201 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 202 | /* setup request: allocate mid, sign message */ |
fec344e3 JL |
203 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
204 | struct smb_rqst *); | |
45740847 | 205 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
206 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
207 | struct smb_rqst *); | |
082d0642 PS |
208 | /* check response: verify signature, map error */ |
209 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
210 | bool); | |
a891f0f8 PS |
211 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
212 | const int); | |
45275789 | 213 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
214 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
215 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 216 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
eb378711 PS |
217 | /* data offset from read response message */ |
218 | unsigned int (*read_data_offset)(char *); | |
219 | /* data length from read response message */ | |
220 | unsigned int (*read_data_length)(char *); | |
221 | /* map smb to linux error */ | |
222 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
223 | /* find mid corresponding to the response message */ |
224 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
225 | void (*dump_detail)(void *); | |
44c58186 PS |
226 | void (*clear_stats)(struct cifs_tcon *); |
227 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 228 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 229 | /* verify the message */ |
373512ec | 230 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 231 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
c11f1df5 SP |
232 | void (*downgrade_oplock)(struct TCP_Server_Info *, |
233 | struct cifsInodeInfo *, bool); | |
316cf94a PS |
234 | /* process transaction2 response */ |
235 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
236 | char *, int); | |
286170aa PS |
237 | /* check if we need to negotiate */ |
238 | bool (*need_neg)(struct TCP_Server_Info *); | |
239 | /* negotiate to the server */ | |
240 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
241 | /* set negotiated write size */ |
242 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
243 | /* set negotiated read size */ | |
244 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
245 | /* setup smb sessionn */ |
246 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
247 | const struct nls_table *); | |
248 | /* close smb session */ | |
249 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
250 | /* connect to a server share */ |
251 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
252 | struct cifs_tcon *, const struct nls_table *); | |
253 | /* close tree connecion */ | |
254 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
255 | /* get DFS referrals */ |
256 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
257 | const char *, struct dfs_info3_param **, | |
258 | unsigned int *, const struct nls_table *, int); | |
af4281dc PS |
259 | /* informational QFS call */ |
260 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); | |
68889f26 PS |
261 | /* check if a path is accessible or not */ |
262 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
263 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
264 | /* query path data from the server */ |
265 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
266 | struct cifs_sb_info *, const char *, | |
eb85d94b | 267 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
268 | /* query file data from the server */ |
269 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
270 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
271 | /* get server index number */ |
272 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
273 | struct cifs_sb_info *, const char *, | |
274 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
275 | /* set size by path */ |
276 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
277 | const char *, __u64, struct cifs_sb_info *, bool); | |
278 | /* set size by file handle */ | |
279 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
280 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
281 | /* set attributes */ |
282 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
283 | const unsigned int); | |
64a5cfa6 SF |
284 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
285 | struct cifsFileInfo *); | |
f6d76178 PS |
286 | /* check if we can send an echo or nor */ |
287 | bool (*can_echo)(struct TCP_Server_Info *); | |
288 | /* send echo request */ | |
289 | int (*echo)(struct TCP_Server_Info *); | |
f436720e PS |
290 | /* create directory */ |
291 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, | |
292 | struct cifs_sb_info *); | |
293 | /* set info on created directory */ | |
294 | void (*mkdir_setinfo)(struct inode *, const char *, | |
295 | struct cifs_sb_info *, struct cifs_tcon *, | |
296 | const unsigned int); | |
f958ca5d PS |
297 | /* remove directory */ |
298 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
299 | struct cifs_sb_info *); | |
ed6875e0 PS |
300 | /* unlink file */ |
301 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
302 | struct cifs_sb_info *); | |
303 | /* open, rename and delete file */ | |
304 | int (*rename_pending_delete)(const char *, struct dentry *, | |
305 | const unsigned int); | |
8ceb9843 PS |
306 | /* send rename request */ |
307 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
308 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
309 | /* send create hardlink request */ |
310 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
311 | const char *, const char *, | |
312 | struct cifs_sb_info *); | |
b42bf888 PS |
313 | /* query symlink target */ |
314 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
315 | const char *, char **, struct cifs_sb_info *); | |
fb1214e4 | 316 | /* open a file for non-posix mounts */ |
226730b4 PS |
317 | int (*open)(const unsigned int, struct cifs_open_parms *, |
318 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
319 | /* set fid protocol-specific info */ |
320 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 321 | /* close a file */ |
760ad0ca PS |
322 | void (*close)(const unsigned int, struct cifs_tcon *, |
323 | struct cifs_fid *); | |
1d8c4c00 PS |
324 | /* send a flush request to the server */ |
325 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
326 | /* async read from the server */ |
327 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 328 | /* async write to the server */ |
4a5c80d7 SF |
329 | int (*async_writev)(struct cifs_writedata *, |
330 | void (*release)(struct kref *)); | |
f9c6e234 | 331 | /* sync read from the server */ |
db8b631d | 332 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
333 | struct cifs_io_parms *, unsigned int *, char **, |
334 | int *); | |
ba9ad725 | 335 | /* sync write to the server */ |
db8b631d | 336 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
337 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
338 | unsigned long); | |
92fc65a7 PS |
339 | /* open dir, start readdir */ |
340 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
341 | const char *, struct cifs_sb_info *, | |
342 | struct cifs_fid *, __u16, | |
343 | struct cifs_search_info *); | |
344 | /* continue readdir */ | |
345 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
346 | struct cifs_fid *, | |
347 | __u16, struct cifs_search_info *srch_inf); | |
348 | /* close dir */ | |
349 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
350 | struct cifs_fid *); | |
351 | /* calculate a size of SMB message */ | |
352 | unsigned int (*calc_smb_size)(void *); | |
2e44b288 PS |
353 | /* check for STATUS_PENDING and process it in a positive case */ |
354 | bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); | |
95a3f2f3 PS |
355 | /* send oplock break response */ |
356 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
357 | struct cifsInodeInfo *); | |
76ec5e33 PS |
358 | /* query remote filesystem */ |
359 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
360 | struct kstatfs *); | |
d39a4f71 PS |
361 | /* send mandatory brlock to the server */ |
362 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
363 | __u64, __u32, int, int, bool); | |
364 | /* unlock range of mandatory locks */ | |
365 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
366 | const unsigned int); | |
367 | /* push brlocks from the cache to the server */ | |
368 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 369 | /* get lease key of the inode */ |
a41a28bd | 370 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 371 | /* set lease key of the inode */ |
a41a28bd | 372 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 373 | /* generate new lease key */ |
a41a28bd | 374 | void (*new_lease_key)(struct cifs_fid *); |
32811d24 | 375 | int (*generate_signingkey)(struct cifs_ses *); |
53ef1016 | 376 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *); |
b3152e2c SF |
377 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
378 | struct cifsFileInfo *src_file); | |
b5be1a1c SP |
379 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
380 | struct cifs_sb_info *, const unsigned char *, | |
381 | char *, unsigned int *); | |
cbb0aba6 SP |
382 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
383 | struct cifs_sb_info *, const unsigned char *, | |
384 | char *, unsigned int *); | |
53ef1016 PS |
385 | /* if we can do cache read operations */ |
386 | bool (*is_read_op)(__u32); | |
387 | /* set oplock level for the inode */ | |
42873b0a PS |
388 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
389 | bool *); | |
a41a28bd PS |
390 | /* create lease context buffer for CREATE request */ |
391 | char * (*create_lease_buf)(u8 *, u8); | |
42873b0a PS |
392 | /* parse lease context buffer and return oplock/epoch info */ |
393 | __u8 (*parse_lease_buf)(void *, unsigned int *); | |
41c1358e SF |
394 | int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file, |
395 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
396 | u64 dest_off); | |
02b16665 SF |
397 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
398 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
399 | u64 dest_off); | |
ff1c038a | 400 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
401 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
402 | const unsigned char *, const unsigned char *, char *, | |
403 | size_t, const struct nls_table *, int); | |
404 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, | |
405 | const char *, const void *, const __u16, | |
406 | const struct nls_table *, int); | |
83e3bc23 SF |
407 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
408 | const char *, u32 *); | |
42eacf9e SF |
409 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
410 | const struct cifs_fid *, u32 *); | |
83e3bc23 SF |
411 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
412 | int); | |
7f6c5008 PS |
413 | /* writepages retry size */ |
414 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
415 | /* get mtu credits */ |
416 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
417 | unsigned int *, unsigned int *); | |
52755808 PS |
418 | /* check if we need to issue closedir */ |
419 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
420 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
421 | loff_t); | |
23db65f5 JL |
422 | }; |
423 | ||
424 | struct smb_version_values { | |
425 | char *version_string; | |
e4aa25e7 SF |
426 | __u16 protocol_id; |
427 | __u32 req_capabilities; | |
106dc538 PS |
428 | __u32 large_lock_type; |
429 | __u32 exclusive_lock_type; | |
430 | __u32 shared_lock_type; | |
431 | __u32 unlock_lock_type; | |
1887f601 PS |
432 | size_t header_size; |
433 | size_t max_header_size; | |
eb378711 | 434 | size_t read_rsp_size; |
2dc7e1c0 | 435 | __le16 lock_cmd; |
29e20f9c PS |
436 | unsigned int cap_unix; |
437 | unsigned int cap_nt_find; | |
438 | unsigned int cap_large_files; | |
50285882 JL |
439 | __u16 signing_enabled; |
440 | __u16 signing_required; | |
a41a28bd | 441 | size_t create_lease_size; |
23db65f5 JL |
442 | }; |
443 | ||
1887f601 PS |
444 | #define HEADER_SIZE(server) (server->vals->header_size) |
445 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
446 | ||
f87d39d9 SF |
447 | struct smb_vol { |
448 | char *username; | |
449 | char *password; | |
450 | char *domainname; | |
451 | char *UNC; | |
f87d39d9 SF |
452 | char *iocharset; /* local code page for mapping to and from Unicode */ |
453 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
454 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
3da46565 EB |
455 | kuid_t cred_uid; |
456 | kuid_t linux_uid; | |
457 | kgid_t linux_gid; | |
458 | kuid_t backupuid; | |
459 | kgid_t backupgid; | |
5206efd6 AV |
460 | umode_t file_mode; |
461 | umode_t dir_mode; | |
1e3cc57e JL |
462 | enum securityEnum sectype; /* sectype requested via mnt opts */ |
463 | bool sign; /* was signing requested via mnt opts? */ | |
f87d39d9 SF |
464 | bool retry:1; |
465 | bool intr:1; | |
466 | bool setuids:1; | |
467 | bool override_uid:1; | |
468 | bool override_gid:1; | |
469 | bool dynperm:1; | |
470 | bool noperm:1; | |
471 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
472 | bool cifs_acl:1; | |
3d3ea8e6 SP |
473 | bool backupuid_specified; /* mount option backupuid is specified */ |
474 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
475 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
476 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
477 | bool direct_io:1; | |
478 | bool strict_io:1; /* strict cache behavior */ | |
479 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
2baa2682 | 480 | bool sfu_remap:1; /* remap seven reserved chars ala SFU */ |
f87d39d9 SF |
481 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
482 | bool no_linux_ext:1; | |
483 | bool sfu_emul:1; | |
484 | bool nullauth:1; /* attempt to authenticate with null user */ | |
485 | bool nocase:1; /* request case insensitive filenames */ | |
486 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
487 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
488 | bool seal:1; /* request transport encryption on share */ | |
489 | bool nodfs:1; /* Do not request DFS, even if available */ | |
490 | bool local_lease:1; /* check leases only on local system, not remote */ | |
491 | bool noblocksnd:1; | |
492 | bool noautotune:1; | |
493 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
494 | bool fsc:1; /* enable fscache */ | |
495 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
496 | bool multiuser:1; | |
d4ffff1f | 497 | bool rwpidforward:1; /* pid forward for read/write operations */ |
b2a30774 SF |
498 | bool nosharesock:1; |
499 | bool persistent:1; | |
500 | bool nopersistent:1; | |
592fafe6 | 501 | bool resilient:1; /* noresilient not required since not fored for CA */ |
f87d39d9 SF |
502 | unsigned int rsize; |
503 | unsigned int wsize; | |
504 | bool sockopt_tcp_nodelay:1; | |
f87d39d9 | 505 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
23db65f5 JL |
506 | struct smb_version_operations *ops; |
507 | struct smb_version_values *vals; | |
f87d39d9 | 508 | char *prepath; |
b979aaa1 | 509 | struct sockaddr_storage dstaddr; /* destination address */ |
f87d39d9 SF |
510 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
511 | struct nls_table *local_nls; | |
adfeb3e0 | 512 | unsigned int echo_interval; /* echo interval in secs */ |
f87d39d9 SF |
513 | }; |
514 | ||
25c7f41e PS |
515 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
516 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
517 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 518 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
519 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
520 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
521 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
522 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
523 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
524 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
525 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
526 | |
527 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
528 | MS_NODEV | MS_SYNCHRONOUS) | |
529 | ||
530 | struct cifs_mnt_data { | |
531 | struct cifs_sb_info *cifs_sb; | |
532 | struct smb_vol *vol; | |
533 | int flags; | |
534 | }; | |
535 | ||
792af7b0 PS |
536 | static inline unsigned int |
537 | get_rfc1002_length(void *buf) | |
538 | { | |
dca1c8d1 | 539 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
540 | } |
541 | ||
ec2e4523 PS |
542 | static inline void |
543 | inc_rfc1001_len(void *buf, int count) | |
544 | { | |
545 | be32_add_cpu((__be32 *)buf, count); | |
546 | } | |
547 | ||
1da177e4 | 548 | struct TCP_Server_Info { |
3b795210 SF |
549 | struct list_head tcp_ses_list; |
550 | struct list_head smb_ses_list; | |
e7ddee90 | 551 | int srv_count; /* reference counter */ |
a10faeb2 | 552 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 553 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
554 | struct smb_version_operations *ops; |
555 | struct smb_version_values *vals; | |
c3dccf48 | 556 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 557 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 558 | struct socket *ssocket; |
a9f1b85e | 559 | struct sockaddr_storage dstaddr; |
3eb9a889 | 560 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
561 | #ifdef CONFIG_NET_NS |
562 | struct net *net; | |
563 | #endif | |
d38d8c74 | 564 | wait_queue_head_t response_q; |
1da177e4 LT |
565 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
566 | struct list_head pending_mid_q; | |
edf1ae40 SF |
567 | bool noblocksnd; /* use blocking sendmsg */ |
568 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 569 | bool tcp_nodelay; |
2d86dbc9 | 570 | int credits; /* send no more requests at once */ |
fc40f9cf | 571 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 572 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 573 | struct mutex srv_mutex; |
1da177e4 LT |
574 | struct task_struct *tsk; |
575 | char server_GUID[16]; | |
286170aa | 576 | __u16 sec_mode; |
38d77c50 | 577 | bool sign; /* is signing enabled on this connection? */ |
c3dccf48 | 578 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
579 | #ifdef CONFIG_CIFS_SMB2 |
580 | int echo_credits; /* echo reserved slots */ | |
581 | int oplock_credits; /* oplock break reserved slots */ | |
582 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 583 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
28ea5290 | 584 | #endif |
c3dccf48 | 585 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 586 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
587 | unsigned int maxReq; /* Clients should submit no more */ |
588 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
589 | /* multiplexed reads or writes */ | |
590 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
591 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
592 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
593 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 594 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
595 | /* message size the server can send or receive for */ |
596 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 597 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 598 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 599 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 600 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 601 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 602 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 603 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 604 | struct session_key session_key; |
3a5ff61c | 605 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 606 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
607 | #define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ |
608 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ | |
609 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
610 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 611 | /* extended security flavors that server supports */ |
c3dccf48 JL |
612 | bool sec_ntlmssp; /* supports NTLMSSP */ |
613 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
614 | bool sec_kerberos; /* supports plain Kerberos */ |
615 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 616 | bool large_buf; /* is current buffer large? */ |
c74093b6 | 617 | struct delayed_work echo; /* echo ping workqueue job */ |
1041e3f9 JL |
618 | struct kvec *iov; /* reusable kvec array for receives */ |
619 | unsigned int nr_iov; /* number of kvecs in array */ | |
2a37ef94 JL |
620 | char *smallbuf; /* pointer to current "small" buffer */ |
621 | char *bigbuf; /* pointer to current "big" buffer */ | |
622 | unsigned int total_read; /* total amount of data read in this pass */ | |
488f1d2d SJ |
623 | #ifdef CONFIG_CIFS_FSCACHE |
624 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
625 | #endif | |
c3dccf48 | 626 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 627 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
628 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
629 | #endif | |
ec2e4523 PS |
630 | #ifdef CONFIG_CIFS_SMB2 |
631 | unsigned int max_read; | |
632 | unsigned int max_write; | |
373512ec | 633 | __u8 preauth_hash[512]; |
ec2e4523 | 634 | #endif /* CONFIG_CIFS_SMB2 */ |
adfeb3e0 | 635 | unsigned long echo_interval; |
1da177e4 LT |
636 | }; |
637 | ||
fc40f9cf PS |
638 | static inline unsigned int |
639 | in_flight(struct TCP_Server_Info *server) | |
640 | { | |
641 | unsigned int num; | |
642 | spin_lock(&server->req_lock); | |
643 | num = server->in_flight; | |
644 | spin_unlock(&server->req_lock); | |
645 | return num; | |
646 | } | |
647 | ||
2d86dbc9 | 648 | static inline bool |
bc205ed1 | 649 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 650 | { |
2d86dbc9 | 651 | int num; |
fc40f9cf | 652 | spin_lock(&server->req_lock); |
bc205ed1 | 653 | num = *credits; |
fc40f9cf | 654 | spin_unlock(&server->req_lock); |
2d86dbc9 | 655 | return num > 0; |
fc40f9cf PS |
656 | } |
657 | ||
45275789 | 658 | static inline void |
a891f0f8 PS |
659 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
660 | const int optype) | |
45275789 | 661 | { |
a891f0f8 | 662 | server->ops->add_credits(server, add, optype); |
45275789 PS |
663 | } |
664 | ||
cb7e9eab PS |
665 | static inline void |
666 | add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add, | |
667 | const int optype) | |
668 | { | |
669 | if (add) { | |
670 | server->ops->add_credits(server, add, optype); | |
671 | wake_up(&server->request_q); | |
672 | } | |
673 | } | |
674 | ||
45275789 PS |
675 | static inline void |
676 | set_credits(struct TCP_Server_Info *server, const int val) | |
677 | { | |
678 | server->ops->set_credits(server, val); | |
679 | } | |
680 | ||
9235d098 | 681 | static inline __le64 |
3d378d3f | 682 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 683 | { |
9235d098 | 684 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
685 | } |
686 | ||
3d378d3f TG |
687 | static inline __le16 |
688 | get_next_mid(struct TCP_Server_Info *server) | |
689 | { | |
9235d098 | 690 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
691 | /* |
692 | * The value in the SMB header should be little endian for easy | |
693 | * on-the-wire decoding. | |
694 | */ | |
695 | return cpu_to_le16(mid); | |
696 | } | |
697 | ||
698 | static inline __u16 | |
699 | get_mid(const struct smb_hdr *smb) | |
700 | { | |
701 | return le16_to_cpu(smb->Mid); | |
702 | } | |
703 | ||
704 | static inline bool | |
705 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
706 | { | |
707 | return mid == le16_to_cpu(smb->Mid); | |
708 | } | |
709 | ||
24985c53 PS |
710 | /* |
711 | * When the server supports very large reads and writes via POSIX extensions, | |
712 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
713 | * including the RFC1001 length. | |
714 | * | |
715 | * Note that this might make for "interesting" allocation problems during | |
716 | * writeback however as we have to allocate an array of pointers for the | |
717 | * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. | |
718 | * | |
719 | * For reads, there is a similar problem as we need to allocate an array | |
720 | * of kvecs to handle the receive, though that should only need to be done | |
721 | * once. | |
722 | */ | |
723 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
724 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
725 | ||
726 | /* | |
727 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
728 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
729 | * write up to the maximum size described by RFC1002. | |
730 | */ | |
731 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
732 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
733 | ||
734 | /* | |
735 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
736 | * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill | |
737 | * a single wsize request with a single call. | |
738 | */ | |
739 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
740 | ||
741 | /* | |
742 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
743 | * those values when posix extensions aren't in force. In actuality here, we | |
744 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
745 | * to be ok with the extra byte even though Windows doesn't send writes that | |
746 | * are that large. | |
747 | * | |
748 | * Citation: | |
749 | * | |
750 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
751 | */ | |
752 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
753 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
754 | ||
f1d0c998 RL |
755 | /* |
756 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
757 | * when CONFIG_NET_NS isn't set. | |
758 | */ | |
759 | ||
760 | #ifdef CONFIG_NET_NS | |
761 | ||
762 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
763 | { | |
764 | return srv->net; | |
765 | } | |
766 | ||
767 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
768 | { | |
769 | srv->net = net; | |
770 | } | |
771 | ||
772 | #else | |
773 | ||
774 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
775 | { | |
776 | return &init_net; | |
777 | } | |
778 | ||
779 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
780 | { | |
781 | } | |
782 | ||
783 | #endif | |
784 | ||
1da177e4 LT |
785 | /* |
786 | * Session structure. One of these for each uid session with a particular host | |
787 | */ | |
96daf2b0 | 788 | struct cifs_ses { |
14fbf50d | 789 | struct list_head smb_ses_list; |
3b795210 | 790 | struct list_head tcon_list; |
d7b619cf | 791 | struct mutex session_mutex; |
1da177e4 | 792 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 793 | int ses_count; /* reference counter */ |
1da177e4 | 794 | enum statusEnum status; |
750d1151 | 795 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 | 796 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
ad009ac9 SF |
797 | char *serverOS; /* name of operating system underlying server */ |
798 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 799 | char *serverDomain; /* security realm of server */ |
286170aa | 800 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
801 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
802 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 803 | unsigned int capabilities; |
d38d8c74 | 804 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 805 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
806 | char *user_name; /* must not be null except during init of sess |
807 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
808 | char *domainName; |
809 | char *password; | |
5d0d2882 | 810 | struct session_key auth_key; |
d3686d54 | 811 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
812 | enum securityEnum sectype; /* what security flavor was specified? */ |
813 | bool sign; /* is signing required? */ | |
3b795210 | 814 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
5478f9ba PS |
815 | #ifdef CONFIG_CIFS_SMB2 |
816 | __u16 session_flags; | |
373512ec SF |
817 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
818 | __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE]; | |
819 | __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE]; | |
820 | __u8 preauth_hash[512]; | |
5478f9ba | 821 | #endif /* CONFIG_CIFS_SMB2 */ |
1da177e4 | 822 | }; |
233839b1 | 823 | |
29e20f9c PS |
824 | static inline bool |
825 | cap_unix(struct cifs_ses *ses) | |
826 | { | |
827 | return ses->server->vals->cap_unix & ses->capabilities; | |
828 | } | |
829 | ||
1da177e4 LT |
830 | /* |
831 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 832 | * session |
1da177e4 | 833 | */ |
96daf2b0 | 834 | struct cifs_tcon { |
f1987b44 JL |
835 | struct list_head tcon_list; |
836 | int tc_count; | |
1da177e4 | 837 | struct list_head openFileList; |
96daf2b0 | 838 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 839 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 840 | char *nativeFileSystem; |
00e485b0 | 841 | char *password; /* for share-level security */ |
faaf946a | 842 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
843 | __u16 Flags; /* optional support bits */ |
844 | enum statusEnum tidStatus; | |
1da177e4 LT |
845 | #ifdef CONFIG_CIFS_STATS |
846 | atomic_t num_smbs_sent; | |
44c58186 PS |
847 | union { |
848 | struct { | |
849 | atomic_t num_writes; | |
850 | atomic_t num_reads; | |
851 | atomic_t num_flushes; | |
852 | atomic_t num_oplock_brks; | |
853 | atomic_t num_opens; | |
854 | atomic_t num_closes; | |
855 | atomic_t num_deletes; | |
856 | atomic_t num_mkdirs; | |
857 | atomic_t num_posixopens; | |
858 | atomic_t num_posixmkdirs; | |
859 | atomic_t num_rmdirs; | |
860 | atomic_t num_renames; | |
861 | atomic_t num_t2renames; | |
862 | atomic_t num_ffirst; | |
863 | atomic_t num_fnext; | |
864 | atomic_t num_fclose; | |
865 | atomic_t num_hardlinks; | |
866 | atomic_t num_symlinks; | |
867 | atomic_t num_locks; | |
868 | atomic_t num_acl_get; | |
869 | atomic_t num_acl_set; | |
870 | } cifs_stats; | |
d60622eb PS |
871 | #ifdef CONFIG_CIFS_SMB2 |
872 | struct { | |
873 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
874 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
875 | } smb2_stats; | |
876 | #endif /* CONFIG_CIFS_SMB2 */ | |
44c58186 | 877 | } stats; |
a5a2b489 SF |
878 | #ifdef CONFIG_CIFS_STATS2 |
879 | unsigned long long time_writes; | |
880 | unsigned long long time_reads; | |
881 | unsigned long long time_opens; | |
882 | unsigned long long time_deletes; | |
883 | unsigned long long time_closes; | |
884 | unsigned long long time_mkdirs; | |
885 | unsigned long long time_rmdirs; | |
886 | unsigned long long time_renames; | |
887 | unsigned long long time_t2renames; | |
888 | unsigned long long time_ffirst; | |
889 | unsigned long long time_fnext; | |
890 | unsigned long long time_fclose; | |
891 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
892 | __u64 bytes_read; |
893 | __u64 bytes_written; | |
894 | spinlock_t stat_lock; | |
a5a2b489 | 895 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 896 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 897 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 898 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
899 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
900 | bool retry:1; | |
901 | bool nocase:1; | |
95b1cb90 | 902 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 903 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 904 | for this mount even if server would support */ |
84210e91 | 905 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 906 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 907 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 908 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
592fafe6 | 909 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 910 | bool use_persistent:1; /* use persistent instead of durable handles */ |
faaf946a PS |
911 | #ifdef CONFIG_CIFS_SMB2 |
912 | bool print:1; /* set if connection to printer share */ | |
913 | bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ | |
769ee6a4 | 914 | __le32 capabilities; |
faaf946a PS |
915 | __u32 share_flags; |
916 | __u32 maximal_access; | |
917 | __u32 vol_serial_number; | |
918 | __le64 vol_create_time; | |
af6a12ea SF |
919 | __u32 ss_flags; /* sector size flags */ |
920 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
921 | __u32 max_chunks; |
922 | __u32 max_bytes_chunk; | |
923 | __u32 max_bytes_copy; | |
faaf946a | 924 | #endif /* CONFIG_CIFS_SMB2 */ |
d03382ce SJ |
925 | #ifdef CONFIG_CIFS_FSCACHE |
926 | u64 resource_id; /* server resource id */ | |
927 | struct fscache_cookie *fscache; /* cookie for share */ | |
928 | #endif | |
233839b1 | 929 | struct list_head pending_opens; /* list of incomplete opens */ |
c18c842b | 930 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
931 | }; |
932 | ||
7ffec372 JL |
933 | /* |
934 | * This is a refcounted and timestamped container for a tcon pointer. The | |
935 | * container holds a tcon reference. It is considered safe to free one of | |
936 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
937 | * "get" on the container. | |
938 | */ | |
939 | struct tcon_link { | |
b647c35f | 940 | struct rb_node tl_rbnode; |
6d4a0832 | 941 | kuid_t tl_uid; |
9d002df4 JL |
942 | unsigned long tl_flags; |
943 | #define TCON_LINK_MASTER 0 | |
944 | #define TCON_LINK_PENDING 1 | |
945 | #define TCON_LINK_IN_TREE 2 | |
946 | unsigned long tl_time; | |
947 | atomic_t tl_count; | |
96daf2b0 | 948 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
949 | }; |
950 | ||
9d002df4 | 951 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 952 | |
96daf2b0 | 953 | static inline struct cifs_tcon * |
7ffec372 JL |
954 | tlink_tcon(struct tcon_link *tlink) |
955 | { | |
9d002df4 | 956 | return tlink->tl_tcon; |
7ffec372 JL |
957 | } |
958 | ||
9d002df4 | 959 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 960 | |
13cfb733 JL |
961 | static inline struct tcon_link * |
962 | cifs_get_tlink(struct tcon_link *tlink) | |
963 | { | |
9d002df4 JL |
964 | if (tlink && !IS_ERR(tlink)) |
965 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
966 | return tlink; |
967 | } | |
968 | ||
7ffec372 | 969 | /* This function is always expected to succeed */ |
96daf2b0 | 970 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 971 | |
233839b1 PS |
972 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
973 | ||
974 | struct cifs_pending_open { | |
975 | struct list_head olist; | |
976 | struct tcon_link *tlink; | |
977 | __u8 lease_key[16]; | |
978 | __u32 oplock; | |
979 | }; | |
980 | ||
1da177e4 | 981 | /* |
7ee1af76 JA |
982 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
983 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
984 | */ |
985 | struct cifsLockInfo { | |
7ee1af76 | 986 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
987 | struct list_head blist; /* pointer to locks blocked on this */ |
988 | wait_queue_head_t block_q; | |
7ee1af76 JA |
989 | __u64 offset; |
990 | __u64 length; | |
03776f45 | 991 | __u32 pid; |
04a6aa8a | 992 | __u32 type; |
1da177e4 LT |
993 | }; |
994 | ||
995 | /* | |
996 | * One of these for each open instance of a file | |
997 | */ | |
998 | struct cifs_search_info { | |
999 | loff_t index_of_last_entry; | |
1000 | __u16 entries_in_buffer; | |
1001 | __u16 info_level; | |
1002 | __u32 resume_key; | |
d38d8c74 SF |
1003 | char *ntwrk_buf_start; |
1004 | char *srch_entries_start; | |
0752f152 | 1005 | char *last_entry; |
eaf35b1e | 1006 | const char *presume_name; |
1da177e4 | 1007 | unsigned int resume_name_len; |
4b18f2a9 SF |
1008 | bool endOfSearch:1; |
1009 | bool emptyDir:1; | |
1010 | bool unicode:1; | |
1011 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1012 | }; |
1013 | ||
226730b4 PS |
1014 | struct cifs_open_parms { |
1015 | struct cifs_tcon *tcon; | |
1016 | struct cifs_sb_info *cifs_sb; | |
1017 | int disposition; | |
1018 | int desired_access; | |
1019 | int create_options; | |
1020 | const char *path; | |
1021 | struct cifs_fid *fid; | |
9cbc0b73 | 1022 | bool reconnect:1; |
226730b4 PS |
1023 | }; |
1024 | ||
4b4de76e PS |
1025 | struct cifs_fid { |
1026 | __u16 netfid; | |
f0df737e PS |
1027 | #ifdef CONFIG_CIFS_SMB2 |
1028 | __u64 persistent_fid; /* persist file id for smb2 */ | |
1029 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1030 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1031 | __u8 create_guid[16]; |
f0df737e | 1032 | #endif |
233839b1 | 1033 | struct cifs_pending_open *pending_open; |
42873b0a PS |
1034 | unsigned int epoch; |
1035 | bool purge_cache; | |
4b4de76e PS |
1036 | }; |
1037 | ||
f45d3416 PS |
1038 | struct cifs_fid_locks { |
1039 | struct list_head llist; | |
1040 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1041 | struct list_head locks; /* locks held by fid above */ | |
1042 | }; | |
1043 | ||
1da177e4 LT |
1044 | struct cifsFileInfo { |
1045 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
1046 | struct list_head flist; /* next fid (file instance) for this inode */ | |
f45d3416 | 1047 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1048 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1049 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1050 | struct cifs_fid fid; /* file id from remote */ |
1da177e4 LT |
1051 | /* BB add lock scope info here if needed */ ; |
1052 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1053 | struct dentry *dentry; |
15886177 | 1054 | unsigned int f_flags; |
13cfb733 | 1055 | struct tcon_link *tlink; |
4b18f2a9 | 1056 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 1057 | bool oplock_break_cancelled:1; |
6c0f6218 | 1058 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 1059 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1060 | struct cifs_search_info srch_inf; |
9b646972 | 1061 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
1062 | }; |
1063 | ||
fa2989f4 PS |
1064 | struct cifs_io_parms { |
1065 | __u16 netfid; | |
09a4707e PS |
1066 | #ifdef CONFIG_CIFS_SMB2 |
1067 | __u64 persistent_fid; /* persist file id for smb2 */ | |
1068 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
1069 | #endif | |
fa2989f4 PS |
1070 | __u32 pid; |
1071 | __u64 offset; | |
1072 | unsigned int length; | |
96daf2b0 | 1073 | struct cifs_tcon *tcon; |
fa2989f4 PS |
1074 | }; |
1075 | ||
09a4707e PS |
1076 | struct cifs_readdata; |
1077 | ||
1078 | /* asynchronous read support */ | |
1079 | struct cifs_readdata { | |
1080 | struct kref refcount; | |
1081 | struct list_head list; | |
1082 | struct completion done; | |
1083 | struct cifsFileInfo *cfile; | |
1084 | struct address_space *mapping; | |
1085 | __u64 offset; | |
1086 | unsigned int bytes; | |
34a54d61 | 1087 | unsigned int got_bytes; |
09a4707e PS |
1088 | pid_t pid; |
1089 | int result; | |
09a4707e | 1090 | struct work_struct work; |
8321fec4 JL |
1091 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1092 | struct cifs_readdata *rdata, | |
1093 | unsigned int len); | |
5819575e | 1094 | struct kvec iov; |
8321fec4 JL |
1095 | unsigned int pagesz; |
1096 | unsigned int tailsz; | |
bed9da02 | 1097 | unsigned int credits; |
c5fab6f4 JL |
1098 | unsigned int nr_pages; |
1099 | struct page *pages[]; | |
09a4707e PS |
1100 | }; |
1101 | ||
33319141 PS |
1102 | struct cifs_writedata; |
1103 | ||
1104 | /* asynchronous write support */ | |
1105 | struct cifs_writedata { | |
1106 | struct kref refcount; | |
1107 | struct list_head list; | |
1108 | struct completion done; | |
1109 | enum writeback_sync_modes sync_mode; | |
1110 | struct work_struct work; | |
1111 | struct cifsFileInfo *cfile; | |
1112 | __u64 offset; | |
1113 | pid_t pid; | |
1114 | unsigned int bytes; | |
1115 | int result; | |
eddb079d JL |
1116 | unsigned int pagesz; |
1117 | unsigned int tailsz; | |
cb7e9eab | 1118 | unsigned int credits; |
33319141 | 1119 | unsigned int nr_pages; |
26c8f0d6 | 1120 | struct page *pages[]; |
33319141 PS |
1121 | }; |
1122 | ||
5f6dbc9e JL |
1123 | /* |
1124 | * Take a reference on the file private data. Must be called with | |
1125 | * cifs_file_list_lock held. | |
1126 | */ | |
764a1b1a JL |
1127 | static inline void |
1128 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1129 | { |
5f6dbc9e | 1130 | ++cifs_file->count; |
6ab409b5 DK |
1131 | } |
1132 | ||
764a1b1a | 1133 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
b33879aa | 1134 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1135 | |
18cceb6a PS |
1136 | #define CIFS_CACHE_READ_FLG 1 |
1137 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1138 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1139 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1140 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1141 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a PS |
1142 | |
1143 | #define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG) | |
53ef1016 | 1144 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
18cceb6a PS |
1145 | #define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG) |
1146 | ||
1da177e4 LT |
1147 | /* |
1148 | * One of these for each file inode | |
1149 | */ | |
1150 | ||
1151 | struct cifsInodeInfo { | |
d59dad2b | 1152 | bool can_cache_brlcks; |
f45d3416 | 1153 | struct list_head llist; /* locks helb by this inode */ |
1b4b55a1 | 1154 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1155 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1156 | struct list_head openFileList; |
1da177e4 | 1157 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1158 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1159 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1160 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1161 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
1162 | #define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */ | |
aff8d5ca JL |
1163 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1164 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1165 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
aff8d5ca | 1166 | unsigned long flags; |
c11f1df5 SP |
1167 | spinlock_t writers_lock; |
1168 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1169 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1170 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1171 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1172 | u64 createtime; /* creation time on server */ |
b8c32dbb PS |
1173 | #ifdef CONFIG_CIFS_SMB2 |
1174 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ | |
1175 | #endif | |
9451a9a5 SJ |
1176 | #ifdef CONFIG_CIFS_FSCACHE |
1177 | struct fscache_cookie *fscache; | |
1178 | #endif | |
1da177e4 LT |
1179 | struct inode vfs_inode; |
1180 | }; | |
1181 | ||
1182 | static inline struct cifsInodeInfo * | |
1183 | CIFS_I(struct inode *inode) | |
1184 | { | |
1185 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1186 | } | |
1187 | ||
1188 | static inline struct cifs_sb_info * | |
1189 | CIFS_SB(struct super_block *sb) | |
1190 | { | |
1191 | return sb->s_fs_info; | |
1192 | } | |
1193 | ||
7119e220 AV |
1194 | static inline struct cifs_sb_info * |
1195 | CIFS_FILE_SB(struct file *file) | |
1196 | { | |
1197 | return CIFS_SB(file_inode(file)->i_sb); | |
1198 | } | |
1199 | ||
ab2f218f | 1200 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1201 | { |
1202 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1203 | return '/'; | |
1204 | else | |
1205 | return '\\'; | |
1206 | } | |
1da177e4 | 1207 | |
f87d39d9 SF |
1208 | static inline void |
1209 | convert_delimiter(char *path, char delim) | |
1210 | { | |
1cc9bd68 | 1211 | char old_delim, *pos; |
f87d39d9 SF |
1212 | |
1213 | if (delim == '/') | |
1214 | old_delim = '\\'; | |
1215 | else | |
1216 | old_delim = '/'; | |
1217 | ||
1cc9bd68 SF |
1218 | pos = path; |
1219 | while ((pos = strchr(pos, old_delim))) | |
1220 | *pos = delim; | |
f87d39d9 SF |
1221 | } |
1222 | ||
a4544347 SF |
1223 | #ifdef CONFIG_CIFS_STATS |
1224 | #define cifs_stats_inc atomic_inc | |
1225 | ||
96daf2b0 | 1226 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1227 | unsigned int bytes) |
1228 | { | |
1229 | if (bytes) { | |
1230 | spin_lock(&tcon->stat_lock); | |
1231 | tcon->bytes_written += bytes; | |
1232 | spin_unlock(&tcon->stat_lock); | |
1233 | } | |
1234 | } | |
1235 | ||
96daf2b0 | 1236 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1237 | unsigned int bytes) |
1238 | { | |
1239 | spin_lock(&tcon->stat_lock); | |
1240 | tcon->bytes_read += bytes; | |
1241 | spin_unlock(&tcon->stat_lock); | |
1242 | } | |
1243 | #else | |
1244 | ||
d38d8c74 SF |
1245 | #define cifs_stats_inc(field) do {} while (0) |
1246 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
1247 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
1248 | |
1249 | #endif | |
1250 | ||
2b84a36c JL |
1251 | |
1252 | /* | |
44d22d84 JL |
1253 | * This is the prototype for the mid receive function. This function is for |
1254 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1255 | * just after the MID in struct smb_hdr). Note: | |
1256 | * | |
1257 | * - This will be called by cifsd, with no locks held. | |
1258 | * - The mid will still be on the pending_mid_q. | |
1259 | * - mid->resp_buf will point to the current buffer. | |
1260 | * | |
1261 | * Returns zero on a successful receive, or an error. The receive state in | |
1262 | * the TCP_Server_Info will also be updated. | |
1263 | */ | |
1264 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1265 | struct mid_q_entry *mid); | |
1266 | ||
1267 | /* | |
1268 | * This is the prototype for the mid callback function. This is called once the | |
1269 | * mid has been received off of the socket. When creating one, take special | |
1270 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1271 | * |
3c1105df JL |
1272 | * - it will be called by cifsd, with no locks held |
1273 | * - the mid will be removed from any lists | |
2b84a36c JL |
1274 | */ |
1275 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1276 | ||
1da177e4 LT |
1277 | /* one of these for every pending CIFS request to the server */ |
1278 | struct mid_q_entry { | |
1279 | struct list_head qhead; /* mids waiting on reply from this server */ | |
2dc7e1c0 | 1280 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
1281 | __u64 mid; /* multiplex id */ |
1282 | __u32 pid; /* process id */ | |
1da177e4 | 1283 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1284 | unsigned long when_alloc; /* when mid was created */ |
1285 | #ifdef CONFIG_CIFS_STATS2 | |
1286 | unsigned long when_sent; /* time when smb send finished */ | |
1287 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1288 | #endif | |
44d22d84 | 1289 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c JL |
1290 | mid_callback_t *callback; /* call completion callback */ |
1291 | void *callback_data; /* general purpose pointer for callback */ | |
d4e4854f | 1292 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 PS |
1293 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
1294 | __le16 command; /* smb command code */ | |
1295 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
1296 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1297 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
1298 | }; |
1299 | ||
789e6661 SF |
1300 | /* Make code in transport.c a little cleaner by moving |
1301 | update of optional stats into function below */ | |
1302 | #ifdef CONFIG_CIFS_STATS2 | |
1303 | ||
1304 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1305 | { | |
1306 | atomic_inc(&server->in_send); | |
1307 | } | |
1308 | ||
1309 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1310 | { | |
1311 | atomic_dec(&server->in_send); | |
1312 | } | |
1313 | ||
1314 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1315 | { | |
1316 | atomic_inc(&server->num_waiters); | |
1317 | } | |
1318 | ||
1319 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1320 | { | |
1321 | atomic_dec(&server->num_waiters); | |
1322 | } | |
1323 | ||
1324 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1325 | { | |
1326 | mid->when_sent = jiffies; | |
1327 | } | |
1328 | #else | |
1329 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1330 | { | |
1331 | } | |
1332 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1333 | { | |
1334 | } | |
1335 | ||
1336 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1337 | { | |
1338 | } | |
1339 | ||
1340 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1341 | { | |
1342 | } | |
1343 | ||
1344 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1345 | { | |
1346 | } | |
1347 | #endif | |
1da177e4 | 1348 | |
ff5dbd9e SF |
1349 | /* for pending dnotify requests */ |
1350 | struct dir_notify_req { | |
13cd4b7f SF |
1351 | struct list_head lhead; |
1352 | __le16 Pid; | |
1353 | __le16 PidHigh; | |
1354 | __u16 Mid; | |
1355 | __u16 Tid; | |
1356 | __u16 Uid; | |
1357 | __u16 netfid; | |
1358 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1359 | int multishot; | |
1360 | struct file *pfile; | |
ff5dbd9e SF |
1361 | }; |
1362 | ||
366781c1 SF |
1363 | struct dfs_info3_param { |
1364 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1365 | int path_consumed; |
366781c1 SF |
1366 | int server_type; |
1367 | int ref_flag; | |
1368 | char *path_name; | |
1369 | char *node_name; | |
1370 | }; | |
1371 | ||
cc0bad75 JL |
1372 | /* |
1373 | * common struct for holding inode info when searching for or updating an | |
1374 | * inode with new info | |
1375 | */ | |
1376 | ||
1377 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1378 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1379 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1380 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1381 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
cc0bad75 JL |
1382 | |
1383 | struct cifs_fattr { | |
1384 | u32 cf_flags; | |
1385 | u32 cf_cifsattrs; | |
1386 | u64 cf_uniqueid; | |
1387 | u64 cf_eof; | |
1388 | u64 cf_bytes; | |
20054bd6 | 1389 | u64 cf_createtime; |
4a2c8cf5 EB |
1390 | kuid_t cf_uid; |
1391 | kgid_t cf_gid; | |
cc0bad75 JL |
1392 | umode_t cf_mode; |
1393 | dev_t cf_rdev; | |
1394 | unsigned int cf_nlink; | |
1395 | unsigned int cf_dtype; | |
1396 | struct timespec cf_atime; | |
1397 | struct timespec cf_mtime; | |
1398 | struct timespec cf_ctime; | |
1399 | }; | |
1400 | ||
366781c1 SF |
1401 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1402 | { | |
1403 | if (param) { | |
1404 | kfree(param->path_name); | |
1405 | kfree(param->node_name); | |
1406 | kfree(param); | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1411 | int number_of_items) | |
1412 | { | |
1413 | int i; | |
1414 | if ((number_of_items == 0) || (param == NULL)) | |
1415 | return; | |
1416 | for (i = 0; i < number_of_items; i++) { | |
1417 | kfree(param[i].path_name); | |
1418 | kfree(param[i].node_name); | |
1419 | } | |
1420 | kfree(param); | |
1421 | } | |
1422 | ||
1da177e4 LT |
1423 | #define MID_FREE 0 |
1424 | #define MID_REQUEST_ALLOCATED 1 | |
1425 | #define MID_REQUEST_SUBMITTED 2 | |
1426 | #define MID_RESPONSE_RECEIVED 4 | |
1427 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1428 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1429 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
1430 | |
1431 | /* Types of response buffer returned from SendReceive2 */ | |
1432 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1433 | #define CIFS_SMALL_BUFFER 1 | |
1434 | #define CIFS_LARGE_BUFFER 2 | |
1435 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1436 | |
133672ef | 1437 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1438 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1439 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1440 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1441 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1442 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1443 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1444 | ||
a891f0f8 PS |
1445 | /* Type of request operation */ |
1446 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1447 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1448 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1449 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
cb7e9eab | 1450 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
a891f0f8 | 1451 | |
3979877e SF |
1452 | /* Security Flags: indicate type of session setup needed */ |
1453 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1454 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1455 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1456 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1457 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1458 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1459 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1460 | #else |
1461 | #define CIFSSEC_MAY_LANMAN 0 | |
1462 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1463 | #endif /* weak passwords */ |
1464 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1465 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1466 | |
1467 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1468 | /* note that only one of the following can be set so the | |
1469 | result of setting MUST flags more than once will be to | |
1470 | require use of the stronger protocol */ | |
1471 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1472 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1473 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1474 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1475 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1476 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1477 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1478 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1479 | #else |
20d1752f | 1480 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1481 | #endif /* UPCALL */ |
0d3a01fa | 1482 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1483 | #define CIFSSEC_MUST_LANMAN 0 |
1484 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1485 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1486 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1487 | #else |
ac683924 | 1488 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1489 | #endif /* UPCALL */ |
3979877e SF |
1490 | #endif /* WEAK_PW_HASH */ |
1491 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1492 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1493 | |
896a8fc2 | 1494 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
ef571cad | 1495 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
ac683924 | 1496 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1497 | /* |
1498 | ***************************************************************** | |
1499 | * All constants go here | |
1500 | ***************************************************************** | |
1501 | */ | |
1502 | ||
1503 | #define UID_HASH (16) | |
1504 | ||
1505 | /* | |
1506 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1507 | * following to be declared. | |
1508 | */ | |
1509 | ||
1510 | /**************************************************************************** | |
1511 | * Locking notes. All updates to global variables and lists should be | |
1512 | * protected by spinlocks or semaphores. | |
1513 | * | |
1514 | * Spinlocks | |
1515 | * --------- | |
1516 | * GlobalMid_Lock protects: | |
1517 | * list operations on pending_mid_q and oplockQ | |
1518 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 1519 | * cifs_file_list_lock protects: |
1da177e4 LT |
1520 | * list operations on tcp and SMB session lists and tCon lists |
1521 | * f_owner.lock protects certain per file struct operations | |
1522 | * mapping->page_lock protects certain per page operations | |
1523 | * | |
1524 | * Semaphores | |
1525 | * ---------- | |
1526 | * sesSem operations on smb session | |
1527 | * tconSem operations on tree connection | |
d38d8c74 | 1528 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1529 | * |
1530 | ****************************************************************************/ | |
1531 | ||
1532 | #ifdef DECLARE_GLOBALS_HERE | |
1533 | #define GLOBAL_EXTERN | |
1534 | #else | |
1535 | #define GLOBAL_EXTERN extern | |
1536 | #endif | |
1537 | ||
e7ddee90 JL |
1538 | /* |
1539 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1540 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1541 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1542 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1543 | * by iterating over cifs_tcp_ses_list |
1544 | */ | |
1545 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1546 | ||
f1987b44 JL |
1547 | /* |
1548 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1549 | * tcp session, and the list of tcon's per smb session. It also protects | |
1550 | * the reference counters for the server, smb session, and tcon. Finally, | |
1551 | * changes to the tcon->tidStatus should be done while holding this lock. | |
1552 | */ | |
3f9bcca7 | 1553 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
1554 | |
1555 | /* | |
1556 | * This lock protects the cifs_file->llist and cifs_file->flist | |
1557 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
1558 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
1559 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
1560 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
1561 | */ | |
4477288a | 1562 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 1563 | |
0eff0e26 | 1564 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1565 | /* Outstanding dir notify requests */ |
1566 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1567 | /* DirNotify response queue */ | |
1568 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1569 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1570 | |
1da177e4 LT |
1571 | /* |
1572 | * Global transaction id (XID) information | |
1573 | */ | |
1574 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1575 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1576 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1577 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1578 | /* on midQ entries */ | |
1da177e4 LT |
1579 | /* |
1580 | * Global counters, updated atomically | |
1581 | */ | |
1582 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1583 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1584 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1585 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1586 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1587 | ||
aaa9bbe0 | 1588 | /* Various Debug counters */ |
4498eed5 SF |
1589 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1590 | #ifdef CONFIG_CIFS_STATS2 | |
1591 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1592 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1593 | #endif | |
1594 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1595 | GLOBAL_EXTERN atomic_t midCount; |
1596 | ||
1597 | /* Misc globals */ | |
5e500ed1 | 1598 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1da177e4 | 1599 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 1600 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1601 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
1602 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1603 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1604 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1605 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1606 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1607 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1608 | ||
21fed0d5 | 1609 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1610 | GLOBAL_EXTERN struct rb_root uidtree; |
1611 | GLOBAL_EXTERN struct rb_root gidtree; | |
1612 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1613 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1614 | GLOBAL_EXTERN struct rb_root siduidtree; |
1615 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1616 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1617 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1618 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1619 | |
9b646972 | 1620 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1621 | |
3bc303c2 | 1622 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1623 | extern struct workqueue_struct *cifsiod_wq; |
abd2e44d | 1624 | |
2dc7e1c0 PS |
1625 | extern mempool_t *cifs_mid_poolp; |
1626 | ||
23db65f5 JL |
1627 | /* Operations for different SMB versions */ |
1628 | #define SMB1_VERSION_STRING "1.0" | |
1629 | extern struct smb_version_operations smb1_operations; | |
1630 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1631 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1632 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1633 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1634 | #define SMB21_VERSION_STRING "2.1" |
1635 | extern struct smb_version_operations smb21_operations; | |
1636 | extern struct smb_version_values smb21_values; | |
e4aa25e7 | 1637 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1638 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1639 | extern struct smb_version_values smb30_values; |
20b6d8b4 SF |
1640 | #define SMB302_VERSION_STRING "3.02" |
1641 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ | |
1642 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1643 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1644 | #define ALT_SMB311_VERSION_STRING "3.11" |
1645 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1646 | extern struct smb_version_values smb311_values; |
abd2e44d | 1647 | #endif /* _CIFS_GLOB_H */ |