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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 | 32 | #include "smb2pdu.h" |
d2b91521 | 33 | |
76ec5e33 PS |
34 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ |
35 | ||
1da177e4 LT |
36 | /* |
37 | * The sizes of various internal tables and strings | |
38 | */ | |
39 | #define MAX_UID_INFO 16 | |
40 | #define MAX_SES_INFO 2 | |
41 | #define MAX_TCON_INFO 4 | |
42 | ||
cdf1246f | 43 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
44 | |
45 | #define CIFS_MIN_RCV_POOL 4 | |
46 | ||
2c0c2a08 | 47 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
48 | /* |
49 | * default attribute cache timeout (jiffies) | |
50 | */ | |
51 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
52 | ||
53 | /* | |
54 | * max attribute cache timeout (jiffies) - 2^30 | |
55 | */ | |
56 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
57 | ||
1da177e4 LT |
58 | /* |
59 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 60 | * on one socket concurrently. |
1da177e4 | 61 | */ |
10b9b98e | 62 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 63 | |
8ecaf67a JL |
64 | #define RFC1001_NAME_LEN 15 |
65 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
66 | ||
b327a717 AA |
67 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
68 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
69 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
70 | ||
adfeb3e0 SF |
71 | /* echo interval in seconds */ |
72 | #define SMB_ECHO_INTERVAL_MIN 1 | |
73 | #define SMB_ECHO_INTERVAL_MAX 600 | |
74 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 75 | |
141891f4 SF |
76 | /* |
77 | * Default number of credits to keep available for SMB3. | |
78 | * This value is chosen somewhat arbitrarily. The Windows client | |
79 | * defaults to 128 credits, the Windows server allows clients up to | |
80 | * 512 credits (or 8K for later versions), and the NetApp server | |
81 | * does not limit clients at all. Choose a high enough default value | |
82 | * such that the client shouldn't limit performance, but allow mount | |
83 | * to override (until you approach 64K, where we limit credits to 65000 | |
84 | * to reduce possibility of seeing more server credit overflow bugs. | |
85 | */ | |
86 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
87 | ||
1da177e4 LT |
88 | #include "cifspdu.h" |
89 | ||
1da177e4 LT |
90 | #ifndef XATTR_DOS_ATTRIB |
91 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
92 | #endif | |
93 | ||
1da177e4 LT |
94 | /* |
95 | * CIFS vfs client Status information (based on what we know.) | |
96 | */ | |
97 | ||
6c0f6218 | 98 | /* associated with each tcp and smb session */ |
1da177e4 LT |
99 | enum statusEnum { |
100 | CifsNew = 0, | |
101 | CifsGood, | |
102 | CifsExiting, | |
fd88ce93 SF |
103 | CifsNeedReconnect, |
104 | CifsNeedNegotiate | |
1da177e4 LT |
105 | }; |
106 | ||
107 | enum securityEnum { | |
515d82ff JL |
108 | Unspecified = 0, /* not specified */ |
109 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 110 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 111 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 112 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 113 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
114 | }; |
115 | ||
5f98ca9a | 116 | struct session_key { |
b609f06a | 117 | unsigned int len; |
21e73393 | 118 | char *response; |
b609f06a SF |
119 | }; |
120 | ||
d2b91521 SP |
121 | /* crypto security descriptor definition */ |
122 | struct sdesc { | |
123 | struct shash_desc shash; | |
124 | char ctx[]; | |
125 | }; | |
126 | ||
f7c5445a | 127 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
128 | struct cifs_secmech { |
129 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
130 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 131 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 132 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
5fcd7f3f | 133 | struct crypto_shash *sha512; /* sha512 hash function */ |
d2b91521 SP |
134 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
135 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 136 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 137 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
5fcd7f3f | 138 | struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ |
026e93dc PS |
139 | struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ |
140 | struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ | |
d2b91521 SP |
141 | }; |
142 | ||
d3686d54 | 143 | /* per smb session structure/fields */ |
d2b91521 | 144 | struct ntlmssp_auth { |
5c234aa5 | 145 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
146 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
147 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
148 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 149 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
150 | }; |
151 | ||
442aa310 SF |
152 | struct cifs_cred { |
153 | int uid; | |
154 | int gid; | |
155 | int mode; | |
156 | int cecount; | |
157 | struct cifs_sid osid; | |
158 | struct cifs_sid gsid; | |
159 | struct cifs_ntace *ntaces; | |
160 | struct cifs_ace *aces; | |
161 | }; | |
162 | ||
1da177e4 LT |
163 | /* |
164 | ***************************************************************** | |
165 | * Except the CIFS PDUs themselves all the | |
166 | * globally interesting structs should go here | |
167 | ***************************************************************** | |
168 | */ | |
169 | ||
bf5ea0e2 JL |
170 | /* |
171 | * A smb_rqst represents a complete request to be issued to a server. It's | |
172 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
173 | * to start at the beginning of the first page. | |
174 | */ | |
175 | struct smb_rqst { | |
176 | struct kvec *rq_iov; /* array of kvecs */ | |
177 | unsigned int rq_nvec; /* number of kvecs in array */ | |
178 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
179 | unsigned int rq_npages; /* number pages in array */ | |
180 | unsigned int rq_pagesz; /* page size to use */ | |
181 | unsigned int rq_tailsz; /* length of last page */ | |
182 | }; | |
183 | ||
23db65f5 JL |
184 | enum smb_version { |
185 | Smb_1 = 1, | |
dd446b16 | 186 | Smb_20, |
1080ef75 | 187 | Smb_21, |
e4aa25e7 | 188 | Smb_30, |
20b6d8b4 | 189 | Smb_302, |
5f7fbf73 SF |
190 | #ifdef CONFIG_CIFS_SMB311 |
191 | Smb_311, | |
192 | #endif /* SMB311 */ | |
9764c02f SF |
193 | Smb_3any, |
194 | Smb_default, | |
5f7fbf73 | 195 | Smb_version_err |
23db65f5 JL |
196 | }; |
197 | ||
121b046a JL |
198 | struct mid_q_entry; |
199 | struct TCP_Server_Info; | |
55157dfb | 200 | struct cifsFileInfo; |
082d0642 | 201 | struct cifs_ses; |
2e6e02ab | 202 | struct cifs_tcon; |
b669f33c | 203 | struct dfs_info3_param; |
1208ef1f | 204 | struct cifs_fattr; |
9224dfc2 | 205 | struct smb_vol; |
fb1214e4 | 206 | struct cifs_fid; |
fc9c5966 | 207 | struct cifs_readdata; |
c9de5c80 | 208 | struct cifs_writedata; |
f9c6e234 | 209 | struct cifs_io_parms; |
92fc65a7 | 210 | struct cifs_search_info; |
95a3f2f3 | 211 | struct cifsInodeInfo; |
226730b4 | 212 | struct cifs_open_parms; |
121b046a | 213 | |
23db65f5 | 214 | struct smb_version_operations { |
fb2036d8 | 215 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 216 | struct mid_q_entry *); |
55157dfb | 217 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 218 | /* setup request: allocate mid, sign message */ |
fec344e3 JL |
219 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
220 | struct smb_rqst *); | |
45740847 | 221 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
222 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
223 | struct smb_rqst *); | |
082d0642 PS |
224 | /* check response: verify signature, map error */ |
225 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
226 | bool); | |
a891f0f8 PS |
227 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
228 | const int); | |
45275789 | 229 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
230 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
231 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 232 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
eb378711 PS |
233 | /* data offset from read response message */ |
234 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
235 | /* |
236 | * Data length from read response message | |
237 | * When in_remaining is true, the returned data length is in | |
238 | * message field DataRemaining for out-of-band data read (e.g through | |
239 | * Memory Registration RDMA write in SMBD). | |
240 | * Otherwise, the returned data length is in message field DataLength. | |
241 | */ | |
242 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
243 | /* map smb to linux error */ |
244 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
245 | /* find mid corresponding to the response message */ |
246 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
247 | void (*dump_detail)(void *); | |
44c58186 PS |
248 | void (*clear_stats)(struct cifs_tcon *); |
249 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 250 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 251 | /* verify the message */ |
373512ec | 252 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 253 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
38bd4906 | 254 | int (*handle_cancelled_mid)(char *, struct TCP_Server_Info *); |
c11f1df5 SP |
255 | void (*downgrade_oplock)(struct TCP_Server_Info *, |
256 | struct cifsInodeInfo *, bool); | |
316cf94a PS |
257 | /* process transaction2 response */ |
258 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
259 | char *, int); | |
286170aa PS |
260 | /* check if we need to negotiate */ |
261 | bool (*need_neg)(struct TCP_Server_Info *); | |
262 | /* negotiate to the server */ | |
263 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
264 | /* set negotiated write size */ |
265 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
266 | /* set negotiated read size */ | |
267 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
268 | /* setup smb sessionn */ |
269 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
270 | const struct nls_table *); | |
271 | /* close smb session */ | |
272 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
273 | /* connect to a server share */ |
274 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
275 | struct cifs_tcon *, const struct nls_table *); | |
276 | /* close tree connecion */ | |
277 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
278 | /* get DFS referrals */ |
279 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
280 | const char *, struct dfs_info3_param **, | |
281 | unsigned int *, const struct nls_table *, int); | |
af4281dc PS |
282 | /* informational QFS call */ |
283 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); | |
68889f26 PS |
284 | /* check if a path is accessible or not */ |
285 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
286 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
287 | /* query path data from the server */ |
288 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
289 | struct cifs_sb_info *, const char *, | |
eb85d94b | 290 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
291 | /* query file data from the server */ |
292 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
293 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
294 | /* get server index number */ |
295 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
296 | struct cifs_sb_info *, const char *, | |
297 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
298 | /* set size by path */ |
299 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
300 | const char *, __u64, struct cifs_sb_info *, bool); | |
301 | /* set size by file handle */ | |
302 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
303 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
304 | /* set attributes */ |
305 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
306 | const unsigned int); | |
64a5cfa6 SF |
307 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
308 | struct cifsFileInfo *); | |
f6d76178 PS |
309 | /* check if we can send an echo or nor */ |
310 | bool (*can_echo)(struct TCP_Server_Info *); | |
311 | /* send echo request */ | |
312 | int (*echo)(struct TCP_Server_Info *); | |
f436720e PS |
313 | /* create directory */ |
314 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, | |
315 | struct cifs_sb_info *); | |
316 | /* set info on created directory */ | |
317 | void (*mkdir_setinfo)(struct inode *, const char *, | |
318 | struct cifs_sb_info *, struct cifs_tcon *, | |
319 | const unsigned int); | |
f958ca5d PS |
320 | /* remove directory */ |
321 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
322 | struct cifs_sb_info *); | |
ed6875e0 PS |
323 | /* unlink file */ |
324 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
325 | struct cifs_sb_info *); | |
326 | /* open, rename and delete file */ | |
327 | int (*rename_pending_delete)(const char *, struct dentry *, | |
328 | const unsigned int); | |
8ceb9843 PS |
329 | /* send rename request */ |
330 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
331 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
332 | /* send create hardlink request */ |
333 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
334 | const char *, const char *, | |
335 | struct cifs_sb_info *); | |
b42bf888 PS |
336 | /* query symlink target */ |
337 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
338 | const char *, char **, struct cifs_sb_info *); | |
fb1214e4 | 339 | /* open a file for non-posix mounts */ |
226730b4 PS |
340 | int (*open)(const unsigned int, struct cifs_open_parms *, |
341 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
342 | /* set fid protocol-specific info */ |
343 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 344 | /* close a file */ |
760ad0ca PS |
345 | void (*close)(const unsigned int, struct cifs_tcon *, |
346 | struct cifs_fid *); | |
1d8c4c00 PS |
347 | /* send a flush request to the server */ |
348 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
349 | /* async read from the server */ |
350 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 351 | /* async write to the server */ |
4a5c80d7 SF |
352 | int (*async_writev)(struct cifs_writedata *, |
353 | void (*release)(struct kref *)); | |
f9c6e234 | 354 | /* sync read from the server */ |
db8b631d | 355 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
356 | struct cifs_io_parms *, unsigned int *, char **, |
357 | int *); | |
ba9ad725 | 358 | /* sync write to the server */ |
db8b631d | 359 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
360 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
361 | unsigned long); | |
92fc65a7 PS |
362 | /* open dir, start readdir */ |
363 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
364 | const char *, struct cifs_sb_info *, | |
365 | struct cifs_fid *, __u16, | |
366 | struct cifs_search_info *); | |
367 | /* continue readdir */ | |
368 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
369 | struct cifs_fid *, | |
370 | __u16, struct cifs_search_info *srch_inf); | |
371 | /* close dir */ | |
372 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
373 | struct cifs_fid *); | |
374 | /* calculate a size of SMB message */ | |
375 | unsigned int (*calc_smb_size)(void *); | |
2e44b288 PS |
376 | /* check for STATUS_PENDING and process it in a positive case */ |
377 | bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); | |
511c54a2 PS |
378 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
379 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
380 | /* send oplock break response */ |
381 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
382 | struct cifsInodeInfo *); | |
76ec5e33 PS |
383 | /* query remote filesystem */ |
384 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
385 | struct kstatfs *); | |
d39a4f71 PS |
386 | /* send mandatory brlock to the server */ |
387 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
388 | __u64, __u32, int, int, bool); | |
389 | /* unlock range of mandatory locks */ | |
390 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
391 | const unsigned int); | |
392 | /* push brlocks from the cache to the server */ | |
393 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 394 | /* get lease key of the inode */ |
a41a28bd | 395 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 396 | /* set lease key of the inode */ |
a41a28bd | 397 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 398 | /* generate new lease key */ |
a41a28bd | 399 | void (*new_lease_key)(struct cifs_fid *); |
32811d24 | 400 | int (*generate_signingkey)(struct cifs_ses *); |
53ef1016 | 401 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *); |
b3152e2c SF |
402 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
403 | struct cifsFileInfo *src_file); | |
834170c8 SF |
404 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
405 | struct cifsFileInfo *src_file, void __user *); | |
b5be1a1c SP |
406 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
407 | struct cifs_sb_info *, const unsigned char *, | |
408 | char *, unsigned int *); | |
cbb0aba6 SP |
409 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
410 | struct cifs_sb_info *, const unsigned char *, | |
411 | char *, unsigned int *); | |
53ef1016 PS |
412 | /* if we can do cache read operations */ |
413 | bool (*is_read_op)(__u32); | |
414 | /* set oplock level for the inode */ | |
42873b0a PS |
415 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
416 | bool *); | |
a41a28bd PS |
417 | /* create lease context buffer for CREATE request */ |
418 | char * (*create_lease_buf)(u8 *, u8); | |
42873b0a PS |
419 | /* parse lease context buffer and return oplock/epoch info */ |
420 | __u8 (*parse_lease_buf)(void *, unsigned int *); | |
620d8745 | 421 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 422 | struct cifsFileInfo *src_file, |
620d8745 SP |
423 | struct cifsFileInfo *target_file, |
424 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
425 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
426 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
427 | u64 dest_off); | |
ff1c038a | 428 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
429 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
430 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 431 | size_t, struct cifs_sb_info *); |
666753c3 SF |
432 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
433 | const char *, const void *, const __u16, | |
5517554e | 434 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 SF |
435 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
436 | const char *, u32 *); | |
42eacf9e SF |
437 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
438 | const struct cifs_fid *, u32 *); | |
83e3bc23 SF |
439 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
440 | int); | |
7f6c5008 PS |
441 | /* writepages retry size */ |
442 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
443 | /* get mtu credits */ |
444 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
445 | unsigned int *, unsigned int *); | |
52755808 PS |
446 | /* check if we need to issue closedir */ |
447 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
448 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
449 | loff_t); | |
7fb8986e PS |
450 | /* init transform request - used for encryption for now */ |
451 | int (*init_transform_rq)(struct TCP_Server_Info *, struct smb_rqst *, | |
452 | struct smb_rqst *); | |
453 | /* free transform request */ | |
454 | void (*free_transform_rq)(struct smb_rqst *); | |
9bb17e09 PS |
455 | int (*is_transform_hdr)(void *buf); |
456 | int (*receive_transform)(struct TCP_Server_Info *, | |
457 | struct mid_q_entry **); | |
ef65aaed SP |
458 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
459 | enum securityEnum); | |
460 | ||
23db65f5 JL |
461 | }; |
462 | ||
463 | struct smb_version_values { | |
464 | char *version_string; | |
e4aa25e7 SF |
465 | __u16 protocol_id; |
466 | __u32 req_capabilities; | |
106dc538 PS |
467 | __u32 large_lock_type; |
468 | __u32 exclusive_lock_type; | |
469 | __u32 shared_lock_type; | |
470 | __u32 unlock_lock_type; | |
93012bf9 | 471 | size_t header_preamble_size; |
1887f601 PS |
472 | size_t header_size; |
473 | size_t max_header_size; | |
eb378711 | 474 | size_t read_rsp_size; |
2dc7e1c0 | 475 | __le16 lock_cmd; |
29e20f9c PS |
476 | unsigned int cap_unix; |
477 | unsigned int cap_nt_find; | |
478 | unsigned int cap_large_files; | |
50285882 JL |
479 | __u16 signing_enabled; |
480 | __u16 signing_required; | |
a41a28bd | 481 | size_t create_lease_size; |
23db65f5 JL |
482 | }; |
483 | ||
1887f601 PS |
484 | #define HEADER_SIZE(server) (server->vals->header_size) |
485 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
486 | ||
f87d39d9 SF |
487 | struct smb_vol { |
488 | char *username; | |
489 | char *password; | |
490 | char *domainname; | |
491 | char *UNC; | |
f87d39d9 SF |
492 | char *iocharset; /* local code page for mapping to and from Unicode */ |
493 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
494 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
3da46565 EB |
495 | kuid_t cred_uid; |
496 | kuid_t linux_uid; | |
497 | kgid_t linux_gid; | |
498 | kuid_t backupuid; | |
499 | kgid_t backupgid; | |
5206efd6 AV |
500 | umode_t file_mode; |
501 | umode_t dir_mode; | |
1e3cc57e JL |
502 | enum securityEnum sectype; /* sectype requested via mnt opts */ |
503 | bool sign; /* was signing requested via mnt opts? */ | |
f87d39d9 SF |
504 | bool retry:1; |
505 | bool intr:1; | |
506 | bool setuids:1; | |
95932655 | 507 | bool setuidfromacl:1; |
f87d39d9 SF |
508 | bool override_uid:1; |
509 | bool override_gid:1; | |
510 | bool dynperm:1; | |
511 | bool noperm:1; | |
512 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
513 | bool cifs_acl:1; | |
3d3ea8e6 SP |
514 | bool backupuid_specified; /* mount option backupuid is specified */ |
515 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
516 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
517 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
518 | bool direct_io:1; | |
519 | bool strict_io:1; /* strict cache behavior */ | |
520 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
2baa2682 | 521 | bool sfu_remap:1; /* remap seven reserved chars ala SFU */ |
f87d39d9 SF |
522 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
523 | bool no_linux_ext:1; | |
524 | bool sfu_emul:1; | |
525 | bool nullauth:1; /* attempt to authenticate with null user */ | |
526 | bool nocase:1; /* request case insensitive filenames */ | |
527 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
528 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
529 | bool seal:1; /* request transport encryption on share */ | |
530 | bool nodfs:1; /* Do not request DFS, even if available */ | |
531 | bool local_lease:1; /* check leases only on local system, not remote */ | |
532 | bool noblocksnd:1; | |
533 | bool noautotune:1; | |
534 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
535 | bool fsc:1; /* enable fscache */ | |
536 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
537 | bool multiuser:1; | |
d4ffff1f | 538 | bool rwpidforward:1; /* pid forward for read/write operations */ |
b2a30774 SF |
539 | bool nosharesock:1; |
540 | bool persistent:1; | |
541 | bool nopersistent:1; | |
592fafe6 | 542 | bool resilient:1; /* noresilient not required since not fored for CA */ |
39566443 | 543 | bool domainauto:1; |
8339dd32 | 544 | bool rdma:1; |
f87d39d9 SF |
545 | unsigned int rsize; |
546 | unsigned int wsize; | |
547 | bool sockopt_tcp_nodelay:1; | |
f87d39d9 | 548 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
23db65f5 JL |
549 | struct smb_version_operations *ops; |
550 | struct smb_version_values *vals; | |
f87d39d9 | 551 | char *prepath; |
b979aaa1 | 552 | struct sockaddr_storage dstaddr; /* destination address */ |
f87d39d9 SF |
553 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
554 | struct nls_table *local_nls; | |
adfeb3e0 | 555 | unsigned int echo_interval; /* echo interval in secs */ |
8b217fe7 | 556 | __u64 snapshot_time; /* needed for timewarp tokens */ |
141891f4 | 557 | unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ |
f87d39d9 SF |
558 | }; |
559 | ||
25c7f41e PS |
560 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
561 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
562 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 563 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
564 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
565 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
566 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
567 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
568 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
569 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
570 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e | 571 | |
1751e8a6 LT |
572 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
573 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
574 | |
575 | struct cifs_mnt_data { | |
576 | struct cifs_sb_info *cifs_sb; | |
577 | struct smb_vol *vol; | |
578 | int flags; | |
579 | }; | |
580 | ||
792af7b0 PS |
581 | static inline unsigned int |
582 | get_rfc1002_length(void *buf) | |
583 | { | |
dca1c8d1 | 584 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
585 | } |
586 | ||
ec2e4523 PS |
587 | static inline void |
588 | inc_rfc1001_len(void *buf, int count) | |
589 | { | |
590 | be32_add_cpu((__be32 *)buf, count); | |
591 | } | |
592 | ||
1da177e4 | 593 | struct TCP_Server_Info { |
3b795210 SF |
594 | struct list_head tcp_ses_list; |
595 | struct list_head smb_ses_list; | |
e7ddee90 | 596 | int srv_count; /* reference counter */ |
a10faeb2 | 597 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 598 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
599 | struct smb_version_operations *ops; |
600 | struct smb_version_values *vals; | |
c3dccf48 | 601 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 602 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 603 | struct socket *ssocket; |
a9f1b85e | 604 | struct sockaddr_storage dstaddr; |
3eb9a889 | 605 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
606 | #ifdef CONFIG_NET_NS |
607 | struct net *net; | |
608 | #endif | |
d38d8c74 | 609 | wait_queue_head_t response_q; |
1da177e4 LT |
610 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
611 | struct list_head pending_mid_q; | |
edf1ae40 SF |
612 | bool noblocksnd; /* use blocking sendmsg */ |
613 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 614 | bool tcp_nodelay; |
141891f4 SF |
615 | unsigned int credits; /* send no more requests at once */ |
616 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 617 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 618 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 619 | struct mutex srv_mutex; |
1da177e4 LT |
620 | struct task_struct *tsk; |
621 | char server_GUID[16]; | |
286170aa | 622 | __u16 sec_mode; |
38d77c50 | 623 | bool sign; /* is signing enabled on this connection? */ |
c3dccf48 | 624 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
625 | int echo_credits; /* echo reserved slots */ |
626 | int oplock_credits; /* oplock break reserved slots */ | |
627 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 628 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 629 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 630 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
631 | unsigned int maxReq; /* Clients should submit no more */ |
632 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
633 | /* multiplexed reads or writes */ | |
634 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
635 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
636 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
637 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 638 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
639 | /* message size the server can send or receive for */ |
640 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 641 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 642 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 643 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 644 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 645 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 646 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 647 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 648 | struct session_key session_key; |
3a5ff61c | 649 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 650 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
651 | #define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ |
652 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ | |
653 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
654 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 655 | /* extended security flavors that server supports */ |
c3dccf48 JL |
656 | bool sec_ntlmssp; /* supports NTLMSSP */ |
657 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
658 | bool sec_kerberos; /* supports plain Kerberos */ |
659 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 660 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
661 | /* use SMBD connection instead of socket */ |
662 | bool rdma; | |
663 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
664 | struct smbd_connection *smbd_conn; | |
c74093b6 | 665 | struct delayed_work echo; /* echo ping workqueue job */ |
2a37ef94 JL |
666 | char *smallbuf; /* pointer to current "small" buffer */ |
667 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
668 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
669 | unsigned int pdu_size; | |
2a37ef94 | 670 | unsigned int total_read; /* total amount of data read in this pass */ |
488f1d2d SJ |
671 | #ifdef CONFIG_CIFS_FSCACHE |
672 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
673 | #endif | |
c3dccf48 | 674 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 675 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
676 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
677 | #endif | |
ec2e4523 PS |
678 | unsigned int max_read; |
679 | unsigned int max_write; | |
06e22908 | 680 | #ifdef CONFIG_CIFS_SMB311 |
5100d8a3 | 681 | __le16 cipher_type; |
8bd68c6e AA |
682 | /* save initital negprot hash */ |
683 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
06e22908 | 684 | #endif /* 3.1.1 */ |
53e0e11e PS |
685 | struct delayed_work reconnect; /* reconnect workqueue job */ |
686 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 687 | unsigned long echo_interval; |
1da177e4 LT |
688 | }; |
689 | ||
fc40f9cf PS |
690 | static inline unsigned int |
691 | in_flight(struct TCP_Server_Info *server) | |
692 | { | |
693 | unsigned int num; | |
694 | spin_lock(&server->req_lock); | |
695 | num = server->in_flight; | |
696 | spin_unlock(&server->req_lock); | |
697 | return num; | |
698 | } | |
699 | ||
2d86dbc9 | 700 | static inline bool |
bc205ed1 | 701 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 702 | { |
2d86dbc9 | 703 | int num; |
fc40f9cf | 704 | spin_lock(&server->req_lock); |
bc205ed1 | 705 | num = *credits; |
fc40f9cf | 706 | spin_unlock(&server->req_lock); |
2d86dbc9 | 707 | return num > 0; |
fc40f9cf PS |
708 | } |
709 | ||
45275789 | 710 | static inline void |
a891f0f8 PS |
711 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
712 | const int optype) | |
45275789 | 713 | { |
a891f0f8 | 714 | server->ops->add_credits(server, add, optype); |
45275789 PS |
715 | } |
716 | ||
cb7e9eab PS |
717 | static inline void |
718 | add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add, | |
719 | const int optype) | |
720 | { | |
721 | if (add) { | |
722 | server->ops->add_credits(server, add, optype); | |
723 | wake_up(&server->request_q); | |
724 | } | |
725 | } | |
726 | ||
45275789 PS |
727 | static inline void |
728 | set_credits(struct TCP_Server_Info *server, const int val) | |
729 | { | |
730 | server->ops->set_credits(server, val); | |
731 | } | |
732 | ||
9235d098 | 733 | static inline __le64 |
3d378d3f | 734 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 735 | { |
9235d098 | 736 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
737 | } |
738 | ||
3d378d3f TG |
739 | static inline __le16 |
740 | get_next_mid(struct TCP_Server_Info *server) | |
741 | { | |
9235d098 | 742 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
743 | /* |
744 | * The value in the SMB header should be little endian for easy | |
745 | * on-the-wire decoding. | |
746 | */ | |
747 | return cpu_to_le16(mid); | |
748 | } | |
749 | ||
750 | static inline __u16 | |
751 | get_mid(const struct smb_hdr *smb) | |
752 | { | |
753 | return le16_to_cpu(smb->Mid); | |
754 | } | |
755 | ||
756 | static inline bool | |
757 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
758 | { | |
759 | return mid == le16_to_cpu(smb->Mid); | |
760 | } | |
761 | ||
24985c53 PS |
762 | /* |
763 | * When the server supports very large reads and writes via POSIX extensions, | |
764 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
765 | * including the RFC1001 length. | |
766 | * | |
767 | * Note that this might make for "interesting" allocation problems during | |
768 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 769 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
770 | * |
771 | * For reads, there is a similar problem as we need to allocate an array | |
772 | * of kvecs to handle the receive, though that should only need to be done | |
773 | * once. | |
774 | */ | |
775 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
776 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
777 | ||
778 | /* | |
779 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
780 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
781 | * write up to the maximum size described by RFC1002. | |
782 | */ | |
783 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
784 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
785 | ||
786 | /* | |
787 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
ea1754a0 | 788 | * pages in a single call. With PAGE_SIZE == 4k, this means we can fill |
24985c53 PS |
789 | * a single wsize request with a single call. |
790 | */ | |
791 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
792 | ||
793 | /* | |
794 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
795 | * those values when posix extensions aren't in force. In actuality here, we | |
796 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
797 | * to be ok with the extra byte even though Windows doesn't send writes that | |
798 | * are that large. | |
799 | * | |
800 | * Citation: | |
801 | * | |
802 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
803 | */ | |
804 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
805 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
806 | ||
f1d0c998 RL |
807 | /* |
808 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
809 | * when CONFIG_NET_NS isn't set. | |
810 | */ | |
811 | ||
812 | #ifdef CONFIG_NET_NS | |
813 | ||
814 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
815 | { | |
816 | return srv->net; | |
817 | } | |
818 | ||
819 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
820 | { | |
821 | srv->net = net; | |
822 | } | |
823 | ||
824 | #else | |
825 | ||
826 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
827 | { | |
828 | return &init_net; | |
829 | } | |
830 | ||
831 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
832 | { | |
833 | } | |
834 | ||
835 | #endif | |
836 | ||
1da177e4 LT |
837 | /* |
838 | * Session structure. One of these for each uid session with a particular host | |
839 | */ | |
96daf2b0 | 840 | struct cifs_ses { |
14fbf50d | 841 | struct list_head smb_ses_list; |
3b795210 | 842 | struct list_head tcon_list; |
b327a717 | 843 | struct cifs_tcon *tcon_ipc; |
d7b619cf | 844 | struct mutex session_mutex; |
1da177e4 | 845 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 846 | int ses_count; /* reference counter */ |
1da177e4 | 847 | enum statusEnum status; |
750d1151 | 848 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
849 | char *serverOS; /* name of operating system underlying server */ |
850 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 851 | char *serverDomain; /* security realm of server */ |
286170aa | 852 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
853 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
854 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 855 | unsigned int capabilities; |
b327a717 | 856 | char serverName[SERVER_NAME_LEN_WITH_NULL]; |
34c87901 SF |
857 | char *user_name; /* must not be null except during init of sess |
858 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
859 | char *domainName; |
860 | char *password; | |
5d0d2882 | 861 | struct session_key auth_key; |
d3686d54 | 862 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
863 | enum securityEnum sectype; /* what security flavor was specified? */ |
864 | bool sign; /* is signing required? */ | |
3b795210 | 865 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
39566443 | 866 | bool domainAuto:1; |
5478f9ba | 867 | __u16 session_flags; |
373512ec SF |
868 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
869 | __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE]; | |
870 | __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE]; | |
06e22908 | 871 | #ifdef CONFIG_CIFS_SMB311 |
8bd68c6e | 872 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
06e22908 | 873 | #endif /* 3.1.1 */ |
1da177e4 | 874 | }; |
233839b1 | 875 | |
29e20f9c PS |
876 | static inline bool |
877 | cap_unix(struct cifs_ses *ses) | |
878 | { | |
879 | return ses->server->vals->cap_unix & ses->capabilities; | |
880 | } | |
881 | ||
1da177e4 LT |
882 | /* |
883 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 884 | * session |
1da177e4 | 885 | */ |
96daf2b0 | 886 | struct cifs_tcon { |
f1987b44 JL |
887 | struct list_head tcon_list; |
888 | int tc_count; | |
53e0e11e | 889 | struct list_head rlist; /* reconnect list */ |
1da177e4 | 890 | struct list_head openFileList; |
3afca265 | 891 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 892 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 893 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 894 | char *nativeFileSystem; |
00e485b0 | 895 | char *password; /* for share-level security */ |
faaf946a | 896 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
897 | __u16 Flags; /* optional support bits */ |
898 | enum statusEnum tidStatus; | |
1da177e4 LT |
899 | #ifdef CONFIG_CIFS_STATS |
900 | atomic_t num_smbs_sent; | |
44c58186 PS |
901 | union { |
902 | struct { | |
903 | atomic_t num_writes; | |
904 | atomic_t num_reads; | |
905 | atomic_t num_flushes; | |
906 | atomic_t num_oplock_brks; | |
907 | atomic_t num_opens; | |
908 | atomic_t num_closes; | |
909 | atomic_t num_deletes; | |
910 | atomic_t num_mkdirs; | |
911 | atomic_t num_posixopens; | |
912 | atomic_t num_posixmkdirs; | |
913 | atomic_t num_rmdirs; | |
914 | atomic_t num_renames; | |
915 | atomic_t num_t2renames; | |
916 | atomic_t num_ffirst; | |
917 | atomic_t num_fnext; | |
918 | atomic_t num_fclose; | |
919 | atomic_t num_hardlinks; | |
920 | atomic_t num_symlinks; | |
921 | atomic_t num_locks; | |
922 | atomic_t num_acl_get; | |
923 | atomic_t num_acl_set; | |
924 | } cifs_stats; | |
d60622eb PS |
925 | struct { |
926 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
927 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
928 | } smb2_stats; | |
44c58186 | 929 | } stats; |
a5a2b489 SF |
930 | #ifdef CONFIG_CIFS_STATS2 |
931 | unsigned long long time_writes; | |
932 | unsigned long long time_reads; | |
933 | unsigned long long time_opens; | |
934 | unsigned long long time_deletes; | |
935 | unsigned long long time_closes; | |
936 | unsigned long long time_mkdirs; | |
937 | unsigned long long time_rmdirs; | |
938 | unsigned long long time_renames; | |
939 | unsigned long long time_t2renames; | |
940 | unsigned long long time_ffirst; | |
941 | unsigned long long time_fnext; | |
942 | unsigned long long time_fclose; | |
943 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
944 | __u64 bytes_read; |
945 | __u64 bytes_written; | |
3afca265 | 946 | spinlock_t stat_lock; /* protects the two fields above */ |
a5a2b489 | 947 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 948 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 949 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 950 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
951 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
952 | bool pipe:1; /* set if connection to pipe share */ | |
953 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
954 | bool retry:1; |
955 | bool nocase:1; | |
95b1cb90 | 956 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 957 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 958 | for this mount even if server would support */ |
84210e91 | 959 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 960 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 961 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 962 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 963 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 964 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 965 | bool use_persistent:1; /* use persistent instead of durable handles */ |
769ee6a4 | 966 | __le32 capabilities; |
faaf946a PS |
967 | __u32 share_flags; |
968 | __u32 maximal_access; | |
969 | __u32 vol_serial_number; | |
970 | __le64 vol_create_time; | |
8b217fe7 | 971 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
af6a12ea SF |
972 | __u32 ss_flags; /* sector size flags */ |
973 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
974 | __u32 max_chunks; |
975 | __u32 max_bytes_chunk; | |
976 | __u32 max_bytes_copy; | |
d03382ce SJ |
977 | #ifdef CONFIG_CIFS_FSCACHE |
978 | u64 resource_id; /* server resource id */ | |
979 | struct fscache_cookie *fscache; /* cookie for share */ | |
980 | #endif | |
233839b1 | 981 | struct list_head pending_opens; /* list of incomplete opens */ |
c18c842b | 982 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
983 | }; |
984 | ||
7ffec372 JL |
985 | /* |
986 | * This is a refcounted and timestamped container for a tcon pointer. The | |
987 | * container holds a tcon reference. It is considered safe to free one of | |
988 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
989 | * "get" on the container. | |
990 | */ | |
991 | struct tcon_link { | |
b647c35f | 992 | struct rb_node tl_rbnode; |
6d4a0832 | 993 | kuid_t tl_uid; |
9d002df4 JL |
994 | unsigned long tl_flags; |
995 | #define TCON_LINK_MASTER 0 | |
996 | #define TCON_LINK_PENDING 1 | |
997 | #define TCON_LINK_IN_TREE 2 | |
998 | unsigned long tl_time; | |
999 | atomic_t tl_count; | |
96daf2b0 | 1000 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1001 | }; |
1002 | ||
9d002df4 | 1003 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1004 | |
96daf2b0 | 1005 | static inline struct cifs_tcon * |
7ffec372 JL |
1006 | tlink_tcon(struct tcon_link *tlink) |
1007 | { | |
9d002df4 | 1008 | return tlink->tl_tcon; |
7ffec372 JL |
1009 | } |
1010 | ||
9d002df4 | 1011 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1012 | |
13cfb733 JL |
1013 | static inline struct tcon_link * |
1014 | cifs_get_tlink(struct tcon_link *tlink) | |
1015 | { | |
9d002df4 JL |
1016 | if (tlink && !IS_ERR(tlink)) |
1017 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1018 | return tlink; |
1019 | } | |
1020 | ||
7ffec372 | 1021 | /* This function is always expected to succeed */ |
96daf2b0 | 1022 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1023 | |
233839b1 PS |
1024 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1025 | ||
1026 | struct cifs_pending_open { | |
1027 | struct list_head olist; | |
1028 | struct tcon_link *tlink; | |
1029 | __u8 lease_key[16]; | |
1030 | __u32 oplock; | |
1031 | }; | |
1032 | ||
1da177e4 | 1033 | /* |
7ee1af76 JA |
1034 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1035 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1036 | */ |
1037 | struct cifsLockInfo { | |
7ee1af76 | 1038 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1039 | struct list_head blist; /* pointer to locks blocked on this */ |
1040 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1041 | __u64 offset; |
1042 | __u64 length; | |
03776f45 | 1043 | __u32 pid; |
04a6aa8a | 1044 | __u32 type; |
1da177e4 LT |
1045 | }; |
1046 | ||
1047 | /* | |
1048 | * One of these for each open instance of a file | |
1049 | */ | |
1050 | struct cifs_search_info { | |
1051 | loff_t index_of_last_entry; | |
1052 | __u16 entries_in_buffer; | |
1053 | __u16 info_level; | |
1054 | __u32 resume_key; | |
d38d8c74 SF |
1055 | char *ntwrk_buf_start; |
1056 | char *srch_entries_start; | |
0752f152 | 1057 | char *last_entry; |
eaf35b1e | 1058 | const char *presume_name; |
1da177e4 | 1059 | unsigned int resume_name_len; |
4b18f2a9 SF |
1060 | bool endOfSearch:1; |
1061 | bool emptyDir:1; | |
1062 | bool unicode:1; | |
1063 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1064 | }; |
1065 | ||
226730b4 PS |
1066 | struct cifs_open_parms { |
1067 | struct cifs_tcon *tcon; | |
1068 | struct cifs_sb_info *cifs_sb; | |
1069 | int disposition; | |
1070 | int desired_access; | |
1071 | int create_options; | |
1072 | const char *path; | |
1073 | struct cifs_fid *fid; | |
9cbc0b73 | 1074 | bool reconnect:1; |
226730b4 PS |
1075 | }; |
1076 | ||
4b4de76e PS |
1077 | struct cifs_fid { |
1078 | __u16 netfid; | |
f0df737e PS |
1079 | __u64 persistent_fid; /* persist file id for smb2 */ |
1080 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1081 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1082 | __u8 create_guid[16]; |
233839b1 | 1083 | struct cifs_pending_open *pending_open; |
42873b0a PS |
1084 | unsigned int epoch; |
1085 | bool purge_cache; | |
4b4de76e PS |
1086 | }; |
1087 | ||
f45d3416 PS |
1088 | struct cifs_fid_locks { |
1089 | struct list_head llist; | |
1090 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1091 | struct list_head locks; /* locks held by fid above */ | |
1092 | }; | |
1093 | ||
1da177e4 | 1094 | struct cifsFileInfo { |
3afca265 | 1095 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1096 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1097 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1098 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1099 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1100 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1101 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1102 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1103 | struct list_head rlist; /* reconnect list */ |
1da177e4 LT |
1104 | /* BB add lock scope info here if needed */ ; |
1105 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1106 | struct dentry *dentry; |
13cfb733 | 1107 | struct tcon_link *tlink; |
3afca265 | 1108 | unsigned int f_flags; |
4b18f2a9 | 1109 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 1110 | bool oplock_break_cancelled:1; |
3afca265 SF |
1111 | int count; |
1112 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1113 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1114 | struct cifs_search_info srch_inf; |
9b646972 | 1115 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
1116 | }; |
1117 | ||
fa2989f4 PS |
1118 | struct cifs_io_parms { |
1119 | __u16 netfid; | |
09a4707e PS |
1120 | __u64 persistent_fid; /* persist file id for smb2 */ |
1121 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1122 | __u32 pid; |
1123 | __u64 offset; | |
1124 | unsigned int length; | |
96daf2b0 | 1125 | struct cifs_tcon *tcon; |
fa2989f4 PS |
1126 | }; |
1127 | ||
ccf7f408 PS |
1128 | struct cifs_aio_ctx { |
1129 | struct kref refcount; | |
1130 | struct list_head list; | |
1131 | struct mutex aio_mutex; | |
1132 | struct completion done; | |
1133 | struct iov_iter iter; | |
1134 | struct kiocb *iocb; | |
1135 | struct cifsFileInfo *cfile; | |
1136 | struct bio_vec *bv; | |
c610c4b6 | 1137 | loff_t pos; |
ccf7f408 PS |
1138 | unsigned int npages; |
1139 | ssize_t rc; | |
1140 | unsigned int len; | |
1141 | unsigned int total_len; | |
1142 | bool should_dirty; | |
1143 | }; | |
1144 | ||
09a4707e PS |
1145 | struct cifs_readdata; |
1146 | ||
1147 | /* asynchronous read support */ | |
1148 | struct cifs_readdata { | |
1149 | struct kref refcount; | |
1150 | struct list_head list; | |
1151 | struct completion done; | |
1152 | struct cifsFileInfo *cfile; | |
1153 | struct address_space *mapping; | |
6685c5e2 | 1154 | struct cifs_aio_ctx *ctx; |
09a4707e PS |
1155 | __u64 offset; |
1156 | unsigned int bytes; | |
34a54d61 | 1157 | unsigned int got_bytes; |
09a4707e PS |
1158 | pid_t pid; |
1159 | int result; | |
09a4707e | 1160 | struct work_struct work; |
8321fec4 JL |
1161 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1162 | struct cifs_readdata *rdata, | |
1163 | unsigned int len); | |
d70b9104 PS |
1164 | int (*copy_into_pages)(struct TCP_Server_Info *server, |
1165 | struct cifs_readdata *rdata, | |
1166 | struct iov_iter *iter); | |
738f9de5 | 1167 | struct kvec iov[2]; |
74dcf418 LL |
1168 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1169 | struct smbd_mr *mr; | |
1170 | #endif | |
8321fec4 JL |
1171 | unsigned int pagesz; |
1172 | unsigned int tailsz; | |
bed9da02 | 1173 | unsigned int credits; |
c5fab6f4 JL |
1174 | unsigned int nr_pages; |
1175 | struct page *pages[]; | |
09a4707e PS |
1176 | }; |
1177 | ||
33319141 PS |
1178 | struct cifs_writedata; |
1179 | ||
1180 | /* asynchronous write support */ | |
1181 | struct cifs_writedata { | |
1182 | struct kref refcount; | |
1183 | struct list_head list; | |
1184 | struct completion done; | |
1185 | enum writeback_sync_modes sync_mode; | |
1186 | struct work_struct work; | |
1187 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1188 | struct cifs_aio_ctx *ctx; |
33319141 PS |
1189 | __u64 offset; |
1190 | pid_t pid; | |
1191 | unsigned int bytes; | |
1192 | int result; | |
db223a59 LL |
1193 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1194 | struct smbd_mr *mr; | |
1195 | #endif | |
eddb079d JL |
1196 | unsigned int pagesz; |
1197 | unsigned int tailsz; | |
cb7e9eab | 1198 | unsigned int credits; |
33319141 | 1199 | unsigned int nr_pages; |
26c8f0d6 | 1200 | struct page *pages[]; |
33319141 PS |
1201 | }; |
1202 | ||
5f6dbc9e JL |
1203 | /* |
1204 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1205 | * cfile->file_info_lock held. |
5f6dbc9e | 1206 | */ |
764a1b1a JL |
1207 | static inline void |
1208 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1209 | { |
5f6dbc9e | 1210 | ++cifs_file->count; |
6ab409b5 DK |
1211 | } |
1212 | ||
764a1b1a | 1213 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
b33879aa | 1214 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1215 | |
18cceb6a PS |
1216 | #define CIFS_CACHE_READ_FLG 1 |
1217 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1218 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1219 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1220 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1221 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a PS |
1222 | |
1223 | #define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG) | |
53ef1016 | 1224 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
18cceb6a PS |
1225 | #define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG) |
1226 | ||
1da177e4 LT |
1227 | /* |
1228 | * One of these for each file inode | |
1229 | */ | |
1230 | ||
1231 | struct cifsInodeInfo { | |
d59dad2b | 1232 | bool can_cache_brlcks; |
f45d3416 | 1233 | struct list_head llist; /* locks helb by this inode */ |
1b4b55a1 | 1234 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1235 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1236 | struct list_head openFileList; |
1da177e4 | 1237 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1238 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1239 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1240 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1241 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
1242 | #define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */ | |
aff8d5ca JL |
1243 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1244 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1245 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
aff8d5ca | 1246 | unsigned long flags; |
c11f1df5 SP |
1247 | spinlock_t writers_lock; |
1248 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1249 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1250 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1251 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1252 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1253 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
9451a9a5 SJ |
1254 | #ifdef CONFIG_CIFS_FSCACHE |
1255 | struct fscache_cookie *fscache; | |
1256 | #endif | |
1da177e4 LT |
1257 | struct inode vfs_inode; |
1258 | }; | |
1259 | ||
1260 | static inline struct cifsInodeInfo * | |
1261 | CIFS_I(struct inode *inode) | |
1262 | { | |
1263 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1264 | } | |
1265 | ||
1266 | static inline struct cifs_sb_info * | |
1267 | CIFS_SB(struct super_block *sb) | |
1268 | { | |
1269 | return sb->s_fs_info; | |
1270 | } | |
1271 | ||
7119e220 AV |
1272 | static inline struct cifs_sb_info * |
1273 | CIFS_FILE_SB(struct file *file) | |
1274 | { | |
1275 | return CIFS_SB(file_inode(file)->i_sb); | |
1276 | } | |
1277 | ||
ab2f218f | 1278 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1279 | { |
1280 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1281 | return '/'; | |
1282 | else | |
1283 | return '\\'; | |
1284 | } | |
1da177e4 | 1285 | |
f87d39d9 SF |
1286 | static inline void |
1287 | convert_delimiter(char *path, char delim) | |
1288 | { | |
1cc9bd68 | 1289 | char old_delim, *pos; |
f87d39d9 SF |
1290 | |
1291 | if (delim == '/') | |
1292 | old_delim = '\\'; | |
1293 | else | |
1294 | old_delim = '/'; | |
1295 | ||
1cc9bd68 SF |
1296 | pos = path; |
1297 | while ((pos = strchr(pos, old_delim))) | |
1298 | *pos = delim; | |
f87d39d9 SF |
1299 | } |
1300 | ||
a4544347 SF |
1301 | #ifdef CONFIG_CIFS_STATS |
1302 | #define cifs_stats_inc atomic_inc | |
1303 | ||
96daf2b0 | 1304 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1305 | unsigned int bytes) |
1306 | { | |
1307 | if (bytes) { | |
1308 | spin_lock(&tcon->stat_lock); | |
1309 | tcon->bytes_written += bytes; | |
1310 | spin_unlock(&tcon->stat_lock); | |
1311 | } | |
1312 | } | |
1313 | ||
96daf2b0 | 1314 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1315 | unsigned int bytes) |
1316 | { | |
1317 | spin_lock(&tcon->stat_lock); | |
1318 | tcon->bytes_read += bytes; | |
1319 | spin_unlock(&tcon->stat_lock); | |
1320 | } | |
1321 | #else | |
1322 | ||
d38d8c74 SF |
1323 | #define cifs_stats_inc(field) do {} while (0) |
1324 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
1325 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
1326 | |
1327 | #endif | |
1328 | ||
2b84a36c JL |
1329 | |
1330 | /* | |
44d22d84 JL |
1331 | * This is the prototype for the mid receive function. This function is for |
1332 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1333 | * just after the MID in struct smb_hdr). Note: | |
1334 | * | |
1335 | * - This will be called by cifsd, with no locks held. | |
1336 | * - The mid will still be on the pending_mid_q. | |
1337 | * - mid->resp_buf will point to the current buffer. | |
1338 | * | |
1339 | * Returns zero on a successful receive, or an error. The receive state in | |
1340 | * the TCP_Server_Info will also be updated. | |
1341 | */ | |
1342 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1343 | struct mid_q_entry *mid); | |
1344 | ||
1345 | /* | |
1346 | * This is the prototype for the mid callback function. This is called once the | |
1347 | * mid has been received off of the socket. When creating one, take special | |
1348 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1349 | * |
3c1105df JL |
1350 | * - it will be called by cifsd, with no locks held |
1351 | * - the mid will be removed from any lists | |
2b84a36c JL |
1352 | */ |
1353 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1354 | ||
9b7c18a2 PS |
1355 | /* |
1356 | * This is the protopyte for mid handle function. This is called once the mid | |
1357 | * has been recognized after decryption of the message. | |
1358 | */ | |
1359 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1360 | struct mid_q_entry *mid); | |
1361 | ||
1da177e4 LT |
1362 | /* one of these for every pending CIFS request to the server */ |
1363 | struct mid_q_entry { | |
1364 | struct list_head qhead; /* mids waiting on reply from this server */ | |
2dc7e1c0 | 1365 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
1366 | __u64 mid; /* multiplex id */ |
1367 | __u32 pid; /* process id */ | |
1da177e4 | 1368 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1369 | unsigned long when_alloc; /* when mid was created */ |
1370 | #ifdef CONFIG_CIFS_STATS2 | |
1371 | unsigned long when_sent; /* time when smb send finished */ | |
1372 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1373 | #endif | |
44d22d84 | 1374 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1375 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1376 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1377 | void *callback_data; /* general purpose pointer for callback */ |
d4e4854f | 1378 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 | 1379 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1380 | unsigned int mid_flags; |
7c9421e1 PS |
1381 | __le16 command; /* smb command code */ |
1382 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
1383 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1384 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1385 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1386 | }; |
1387 | ||
38bd4906 SP |
1388 | struct close_cancelled_open { |
1389 | struct cifs_fid fid; | |
1390 | struct cifs_tcon *tcon; | |
1391 | struct work_struct work; | |
1392 | }; | |
1393 | ||
789e6661 SF |
1394 | /* Make code in transport.c a little cleaner by moving |
1395 | update of optional stats into function below */ | |
1396 | #ifdef CONFIG_CIFS_STATS2 | |
1397 | ||
1398 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1399 | { | |
1400 | atomic_inc(&server->in_send); | |
1401 | } | |
1402 | ||
1403 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1404 | { | |
1405 | atomic_dec(&server->in_send); | |
1406 | } | |
1407 | ||
1408 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1409 | { | |
1410 | atomic_inc(&server->num_waiters); | |
1411 | } | |
1412 | ||
1413 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1414 | { | |
1415 | atomic_dec(&server->num_waiters); | |
1416 | } | |
1417 | ||
1418 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1419 | { | |
1420 | mid->when_sent = jiffies; | |
1421 | } | |
1422 | #else | |
1423 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1424 | { | |
1425 | } | |
1426 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1427 | { | |
1428 | } | |
1429 | ||
1430 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1431 | { | |
1432 | } | |
1433 | ||
1434 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1435 | { | |
1436 | } | |
1437 | ||
1438 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1439 | { | |
1440 | } | |
1441 | #endif | |
1da177e4 | 1442 | |
ff5dbd9e SF |
1443 | /* for pending dnotify requests */ |
1444 | struct dir_notify_req { | |
13cd4b7f SF |
1445 | struct list_head lhead; |
1446 | __le16 Pid; | |
1447 | __le16 PidHigh; | |
1448 | __u16 Mid; | |
1449 | __u16 Tid; | |
1450 | __u16 Uid; | |
1451 | __u16 netfid; | |
1452 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1453 | int multishot; | |
1454 | struct file *pfile; | |
ff5dbd9e SF |
1455 | }; |
1456 | ||
366781c1 SF |
1457 | struct dfs_info3_param { |
1458 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1459 | int path_consumed; |
366781c1 SF |
1460 | int server_type; |
1461 | int ref_flag; | |
1462 | char *path_name; | |
1463 | char *node_name; | |
1464 | }; | |
1465 | ||
cc0bad75 JL |
1466 | /* |
1467 | * common struct for holding inode info when searching for or updating an | |
1468 | * inode with new info | |
1469 | */ | |
1470 | ||
1471 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1472 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1473 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1474 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1475 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
7ea884c7 | 1476 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 |
cc0bad75 JL |
1477 | |
1478 | struct cifs_fattr { | |
1479 | u32 cf_flags; | |
1480 | u32 cf_cifsattrs; | |
1481 | u64 cf_uniqueid; | |
1482 | u64 cf_eof; | |
1483 | u64 cf_bytes; | |
20054bd6 | 1484 | u64 cf_createtime; |
4a2c8cf5 EB |
1485 | kuid_t cf_uid; |
1486 | kgid_t cf_gid; | |
cc0bad75 JL |
1487 | umode_t cf_mode; |
1488 | dev_t cf_rdev; | |
1489 | unsigned int cf_nlink; | |
1490 | unsigned int cf_dtype; | |
1491 | struct timespec cf_atime; | |
1492 | struct timespec cf_mtime; | |
1493 | struct timespec cf_ctime; | |
1494 | }; | |
1495 | ||
366781c1 SF |
1496 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1497 | { | |
1498 | if (param) { | |
1499 | kfree(param->path_name); | |
1500 | kfree(param->node_name); | |
1501 | kfree(param); | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1506 | int number_of_items) | |
1507 | { | |
1508 | int i; | |
1509 | if ((number_of_items == 0) || (param == NULL)) | |
1510 | return; | |
1511 | for (i = 0; i < number_of_items; i++) { | |
1512 | kfree(param[i].path_name); | |
1513 | kfree(param[i].node_name); | |
1514 | } | |
1515 | kfree(param); | |
1516 | } | |
1517 | ||
1da177e4 LT |
1518 | #define MID_FREE 0 |
1519 | #define MID_REQUEST_ALLOCATED 1 | |
1520 | #define MID_REQUEST_SUBMITTED 2 | |
1521 | #define MID_RESPONSE_RECEIVED 4 | |
1522 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1523 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1524 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1525 | |
38bd4906 SP |
1526 | /* Flags */ |
1527 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
1528 | ||
ec637e3f SF |
1529 | /* Types of response buffer returned from SendReceive2 */ |
1530 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1531 | #define CIFS_SMALL_BUFFER 1 | |
1532 | #define CIFS_LARGE_BUFFER 2 | |
1533 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1534 | |
133672ef | 1535 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1536 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1537 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1538 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1539 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1540 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1541 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1542 | ||
a891f0f8 PS |
1543 | /* Type of request operation */ |
1544 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1545 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1546 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1547 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
7fb8986e | 1548 | |
cb7e9eab | 1549 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
7fb8986e | 1550 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ |
a891f0f8 | 1551 | |
3979877e SF |
1552 | /* Security Flags: indicate type of session setup needed */ |
1553 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1554 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1555 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1556 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1557 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1558 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1559 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1560 | #else |
1561 | #define CIFSSEC_MAY_LANMAN 0 | |
1562 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1563 | #endif /* weak passwords */ |
1564 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1565 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1566 | |
1567 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1568 | /* note that only one of the following can be set so the | |
1569 | result of setting MUST flags more than once will be to | |
1570 | require use of the stronger protocol */ | |
1571 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1572 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1573 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1574 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1575 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1576 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1577 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1578 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1579 | #else |
20d1752f | 1580 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1581 | #endif /* UPCALL */ |
0d3a01fa | 1582 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1583 | #define CIFSSEC_MUST_LANMAN 0 |
1584 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1585 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1586 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1587 | #else |
ac683924 | 1588 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1589 | #endif /* UPCALL */ |
3979877e SF |
1590 | #endif /* WEAK_PW_HASH */ |
1591 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1592 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1593 | |
896a8fc2 | 1594 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
ef571cad | 1595 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
ac683924 | 1596 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1597 | /* |
1598 | ***************************************************************** | |
1599 | * All constants go here | |
1600 | ***************************************************************** | |
1601 | */ | |
1602 | ||
1603 | #define UID_HASH (16) | |
1604 | ||
1605 | /* | |
1606 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1607 | * following to be declared. | |
1608 | */ | |
1609 | ||
1610 | /**************************************************************************** | |
1611 | * Locking notes. All updates to global variables and lists should be | |
1612 | * protected by spinlocks or semaphores. | |
1613 | * | |
1614 | * Spinlocks | |
1615 | * --------- | |
1616 | * GlobalMid_Lock protects: | |
1617 | * list operations on pending_mid_q and oplockQ | |
1618 | * updates to XID counters, multiplex id and SMB sequence numbers | |
3afca265 SF |
1619 | * tcp_ses_lock protects: |
1620 | * list operations on tcp and SMB session lists | |
1621 | * tcon->open_file_lock protects the list of open files hanging off the tcon | |
1622 | * cfile->file_info_lock protects counters and fields in cifs file struct | |
1da177e4 LT |
1623 | * f_owner.lock protects certain per file struct operations |
1624 | * mapping->page_lock protects certain per page operations | |
1625 | * | |
1626 | * Semaphores | |
1627 | * ---------- | |
1628 | * sesSem operations on smb session | |
1629 | * tconSem operations on tree connection | |
d38d8c74 | 1630 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1631 | * |
1632 | ****************************************************************************/ | |
1633 | ||
1634 | #ifdef DECLARE_GLOBALS_HERE | |
1635 | #define GLOBAL_EXTERN | |
1636 | #else | |
1637 | #define GLOBAL_EXTERN extern | |
1638 | #endif | |
1639 | ||
e7ddee90 JL |
1640 | /* |
1641 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1642 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1643 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1644 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1645 | * by iterating over cifs_tcp_ses_list |
1646 | */ | |
1647 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1648 | ||
f1987b44 JL |
1649 | /* |
1650 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1651 | * tcp session, and the list of tcon's per smb session. It also protects | |
1652 | * the reference counters for the server, smb session, and tcon. Finally, | |
1653 | * changes to the tcon->tidStatus should be done while holding this lock. | |
3afca265 SF |
1654 | * generally the locks should be taken in order tcp_ses_lock before |
1655 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1656 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1657 | */ |
3f9bcca7 | 1658 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1659 | |
0eff0e26 | 1660 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1661 | /* Outstanding dir notify requests */ |
1662 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1663 | /* DirNotify response queue */ | |
1664 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1665 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1666 | |
1da177e4 LT |
1667 | /* |
1668 | * Global transaction id (XID) information | |
1669 | */ | |
1670 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1671 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1672 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1673 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1674 | /* on midQ entries */ | |
1da177e4 LT |
1675 | /* |
1676 | * Global counters, updated atomically | |
1677 | */ | |
1678 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1679 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1680 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1681 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1682 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1683 | ||
aaa9bbe0 | 1684 | /* Various Debug counters */ |
4498eed5 SF |
1685 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1686 | #ifdef CONFIG_CIFS_STATS2 | |
1687 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1688 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1689 | #endif | |
1690 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1691 | GLOBAL_EXTERN atomic_t midCount; |
1692 | ||
1693 | /* Misc globals */ | |
5e500ed1 | 1694 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1404297e | 1695 | GLOBAL_EXTERN bool lookupCacheEnabled; |
04912d6a | 1696 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1697 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 | 1698 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1404297e | 1699 | GLOBAL_EXTERN bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
1da177e4 LT |
1700 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ |
1701 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1702 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1703 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1704 | ||
21fed0d5 | 1705 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1706 | GLOBAL_EXTERN struct rb_root uidtree; |
1707 | GLOBAL_EXTERN struct rb_root gidtree; | |
1708 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1709 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1710 | GLOBAL_EXTERN struct rb_root siduidtree; |
1711 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1712 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1713 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1714 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1715 | |
9b646972 | 1716 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1717 | |
3bc303c2 | 1718 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1719 | extern struct workqueue_struct *cifsiod_wq; |
3998e6b8 | 1720 | extern struct workqueue_struct *cifsoplockd_wq; |
3d22462a | 1721 | extern __u32 cifs_lock_secret; |
abd2e44d | 1722 | |
2dc7e1c0 PS |
1723 | extern mempool_t *cifs_mid_poolp; |
1724 | ||
23db65f5 JL |
1725 | /* Operations for different SMB versions */ |
1726 | #define SMB1_VERSION_STRING "1.0" | |
1727 | extern struct smb_version_operations smb1_operations; | |
1728 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1729 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1730 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1731 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1732 | #define SMB21_VERSION_STRING "2.1" |
1733 | extern struct smb_version_operations smb21_operations; | |
1734 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
1735 | #define SMBDEFAULT_VERSION_STRING "default" |
1736 | extern struct smb_version_values smbdefault_values; | |
1737 | #define SMB3ANY_VERSION_STRING "3" | |
1738 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 1739 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1740 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1741 | extern struct smb_version_values smb30_values; |
20b6d8b4 SF |
1742 | #define SMB302_VERSION_STRING "3.02" |
1743 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ | |
1744 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1745 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1746 | #define ALT_SMB311_VERSION_STRING "3.11" |
1747 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1748 | extern struct smb_version_values smb311_values; |
abd2e44d | 1749 | #endif /* _CIFS_GLOB_H */ |