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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 | ||
8d8b26e5 | 36 | #define SMB_PATH_MAX 260 |
e2292430 AA |
37 | #define CIFS_PORT 445 |
38 | #define RFC1001_PORT 139 | |
39 | ||
1da177e4 LT |
40 | /* |
41 | * The sizes of various internal tables and strings | |
42 | */ | |
43 | #define MAX_UID_INFO 16 | |
44 | #define MAX_SES_INFO 2 | |
45 | #define MAX_TCON_INFO 4 | |
46 | ||
cdf1246f | 47 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
48 | |
49 | #define CIFS_MIN_RCV_POOL 4 | |
50 | ||
2c0c2a08 | 51 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
52 | /* |
53 | * default attribute cache timeout (jiffies) | |
54 | */ | |
55 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
56 | ||
57 | /* | |
58 | * max attribute cache timeout (jiffies) - 2^30 | |
59 | */ | |
60 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
61 | ||
1da177e4 LT |
62 | /* |
63 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 64 | * on one socket concurrently. |
1da177e4 | 65 | */ |
10b9b98e | 66 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 67 | |
8ecaf67a JL |
68 | #define RFC1001_NAME_LEN 15 |
69 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
70 | ||
b327a717 AA |
71 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
72 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
73 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
74 | ||
adfeb3e0 SF |
75 | /* echo interval in seconds */ |
76 | #define SMB_ECHO_INTERVAL_MIN 1 | |
77 | #define SMB_ECHO_INTERVAL_MAX 600 | |
78 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 79 | |
b24df3e3 RS |
80 | /* maximum number of PDUs in one compound */ |
81 | #define MAX_COMPOUND 5 | |
82 | ||
141891f4 SF |
83 | /* |
84 | * Default number of credits to keep available for SMB3. | |
85 | * This value is chosen somewhat arbitrarily. The Windows client | |
86 | * defaults to 128 credits, the Windows server allows clients up to | |
87 | * 512 credits (or 8K for later versions), and the NetApp server | |
88 | * does not limit clients at all. Choose a high enough default value | |
89 | * such that the client shouldn't limit performance, but allow mount | |
90 | * to override (until you approach 64K, where we limit credits to 65000 | |
91 | * to reduce possibility of seeing more server credit overflow bugs. | |
92 | */ | |
93 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
94 | ||
1da177e4 LT |
95 | #include "cifspdu.h" |
96 | ||
1da177e4 LT |
97 | #ifndef XATTR_DOS_ATTRIB |
98 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
99 | #endif | |
100 | ||
1da177e4 LT |
101 | /* |
102 | * CIFS vfs client Status information (based on what we know.) | |
103 | */ | |
104 | ||
6c0f6218 | 105 | /* associated with each tcp and smb session */ |
1da177e4 LT |
106 | enum statusEnum { |
107 | CifsNew = 0, | |
108 | CifsGood, | |
109 | CifsExiting, | |
fd88ce93 SF |
110 | CifsNeedReconnect, |
111 | CifsNeedNegotiate | |
1da177e4 LT |
112 | }; |
113 | ||
114 | enum securityEnum { | |
515d82ff JL |
115 | Unspecified = 0, /* not specified */ |
116 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 117 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 118 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 119 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 120 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
121 | }; |
122 | ||
5f98ca9a | 123 | struct session_key { |
b609f06a | 124 | unsigned int len; |
21e73393 | 125 | char *response; |
b609f06a SF |
126 | }; |
127 | ||
d2b91521 SP |
128 | /* crypto security descriptor definition */ |
129 | struct sdesc { | |
130 | struct shash_desc shash; | |
131 | char ctx[]; | |
132 | }; | |
133 | ||
f7c5445a | 134 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
135 | struct cifs_secmech { |
136 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
137 | struct crypto_shash *md5; /* md5 hash function */ | |
3c1bf7e4 | 138 | struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ |
429b46f4 | 139 | struct crypto_shash *cmacaes; /* block-cipher based MAC function */ |
5fcd7f3f | 140 | struct crypto_shash *sha512; /* sha512 hash function */ |
d2b91521 SP |
141 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ |
142 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
3c1bf7e4 | 143 | struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ |
429b46f4 | 144 | struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ |
5fcd7f3f | 145 | struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */ |
026e93dc PS |
146 | struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ |
147 | struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ | |
d2b91521 SP |
148 | }; |
149 | ||
d3686d54 | 150 | /* per smb session structure/fields */ |
d2b91521 | 151 | struct ntlmssp_auth { |
5c234aa5 | 152 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
153 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
154 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
155 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 156 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
157 | }; |
158 | ||
442aa310 SF |
159 | struct cifs_cred { |
160 | int uid; | |
161 | int gid; | |
162 | int mode; | |
163 | int cecount; | |
164 | struct cifs_sid osid; | |
165 | struct cifs_sid gsid; | |
166 | struct cifs_ntace *ntaces; | |
167 | struct cifs_ace *aces; | |
168 | }; | |
169 | ||
1da177e4 LT |
170 | /* |
171 | ***************************************************************** | |
172 | * Except the CIFS PDUs themselves all the | |
173 | * globally interesting structs should go here | |
174 | ***************************************************************** | |
175 | */ | |
176 | ||
bf5ea0e2 JL |
177 | /* |
178 | * A smb_rqst represents a complete request to be issued to a server. It's | |
179 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
180 | * to start at the beginning of the first page. | |
181 | */ | |
182 | struct smb_rqst { | |
183 | struct kvec *rq_iov; /* array of kvecs */ | |
184 | unsigned int rq_nvec; /* number of kvecs in array */ | |
185 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
57a929a6 | 186 | unsigned int rq_offset; /* the offset to the 1st page */ |
bf5ea0e2 JL |
187 | unsigned int rq_npages; /* number pages in array */ |
188 | unsigned int rq_pagesz; /* page size to use */ | |
189 | unsigned int rq_tailsz; /* length of last page */ | |
190 | }; | |
191 | ||
23db65f5 JL |
192 | enum smb_version { |
193 | Smb_1 = 1, | |
dd446b16 | 194 | Smb_20, |
1080ef75 | 195 | Smb_21, |
e4aa25e7 | 196 | Smb_30, |
20b6d8b4 | 197 | Smb_302, |
5f7fbf73 | 198 | Smb_311, |
9764c02f SF |
199 | Smb_3any, |
200 | Smb_default, | |
5f7fbf73 | 201 | Smb_version_err |
23db65f5 JL |
202 | }; |
203 | ||
121b046a JL |
204 | struct mid_q_entry; |
205 | struct TCP_Server_Info; | |
55157dfb | 206 | struct cifsFileInfo; |
082d0642 | 207 | struct cifs_ses; |
2e6e02ab | 208 | struct cifs_tcon; |
b669f33c | 209 | struct dfs_info3_param; |
1208ef1f | 210 | struct cifs_fattr; |
9224dfc2 | 211 | struct smb_vol; |
fb1214e4 | 212 | struct cifs_fid; |
fc9c5966 | 213 | struct cifs_readdata; |
c9de5c80 | 214 | struct cifs_writedata; |
f9c6e234 | 215 | struct cifs_io_parms; |
92fc65a7 | 216 | struct cifs_search_info; |
95a3f2f3 | 217 | struct cifsInodeInfo; |
226730b4 | 218 | struct cifs_open_parms; |
121b046a | 219 | |
23db65f5 | 220 | struct smb_version_operations { |
fb2036d8 | 221 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 222 | struct mid_q_entry *); |
55157dfb | 223 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 224 | /* setup request: allocate mid, sign message */ |
fec344e3 JL |
225 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
226 | struct smb_rqst *); | |
45740847 | 227 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
228 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
229 | struct smb_rqst *); | |
082d0642 PS |
230 | /* check response: verify signature, map error */ |
231 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
232 | bool); | |
a891f0f8 PS |
233 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
234 | const int); | |
45275789 | 235 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
236 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
237 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 238 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
eb378711 PS |
239 | /* data offset from read response message */ |
240 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
241 | /* |
242 | * Data length from read response message | |
243 | * When in_remaining is true, the returned data length is in | |
244 | * message field DataRemaining for out-of-band data read (e.g through | |
245 | * Memory Registration RDMA write in SMBD). | |
246 | * Otherwise, the returned data length is in message field DataLength. | |
247 | */ | |
248 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
249 | /* map smb to linux error */ |
250 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
251 | /* find mid corresponding to the response message */ |
252 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 253 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
254 | void (*clear_stats)(struct cifs_tcon *); |
255 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 256 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 257 | /* verify the message */ |
373512ec | 258 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 259 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
38bd4906 | 260 | int (*handle_cancelled_mid)(char *, struct TCP_Server_Info *); |
c11f1df5 SP |
261 | void (*downgrade_oplock)(struct TCP_Server_Info *, |
262 | struct cifsInodeInfo *, bool); | |
316cf94a PS |
263 | /* process transaction2 response */ |
264 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
265 | char *, int); | |
286170aa PS |
266 | /* check if we need to negotiate */ |
267 | bool (*need_neg)(struct TCP_Server_Info *); | |
268 | /* negotiate to the server */ | |
269 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
24985c53 PS |
270 | /* set negotiated write size */ |
271 | unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); | |
272 | /* set negotiated read size */ | |
273 | unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); | |
58c45c58 PS |
274 | /* setup smb sessionn */ |
275 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
276 | const struct nls_table *); | |
277 | /* close smb session */ | |
278 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
279 | /* connect to a server share */ |
280 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
281 | struct cifs_tcon *, const struct nls_table *); | |
282 | /* close tree connecion */ | |
283 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
284 | /* get DFS referrals */ |
285 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
286 | const char *, struct dfs_info3_param **, | |
287 | unsigned int *, const struct nls_table *, int); | |
af4281dc PS |
288 | /* informational QFS call */ |
289 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *); | |
68889f26 PS |
290 | /* check if a path is accessible or not */ |
291 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
292 | struct cifs_sb_info *, const char *); | |
1208ef1f PS |
293 | /* query path data from the server */ |
294 | int (*query_path_info)(const unsigned int, struct cifs_tcon *, | |
295 | struct cifs_sb_info *, const char *, | |
eb85d94b | 296 | FILE_ALL_INFO *, bool *, bool *); |
4ad65044 PS |
297 | /* query file data from the server */ |
298 | int (*query_file_info)(const unsigned int, struct cifs_tcon *, | |
299 | struct cifs_fid *, FILE_ALL_INFO *); | |
1208ef1f PS |
300 | /* get server index number */ |
301 | int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, | |
302 | struct cifs_sb_info *, const char *, | |
303 | u64 *uniqueid, FILE_ALL_INFO *); | |
d1433418 PS |
304 | /* set size by path */ |
305 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
306 | const char *, __u64, struct cifs_sb_info *, bool); | |
307 | /* set size by file handle */ | |
308 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
309 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
310 | /* set attributes */ |
311 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
312 | const unsigned int); | |
64a5cfa6 SF |
313 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
314 | struct cifsFileInfo *); | |
f6d76178 PS |
315 | /* check if we can send an echo or nor */ |
316 | bool (*can_echo)(struct TCP_Server_Info *); | |
317 | /* send echo request */ | |
318 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 319 | /* create directory */ |
bea851b8 SF |
320 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
321 | umode_t mode, struct cifs_tcon *tcon, | |
322 | const char *full_path, | |
323 | struct cifs_sb_info *cifs_sb); | |
f436720e PS |
324 | int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, |
325 | struct cifs_sb_info *); | |
326 | /* set info on created directory */ | |
327 | void (*mkdir_setinfo)(struct inode *, const char *, | |
328 | struct cifs_sb_info *, struct cifs_tcon *, | |
329 | const unsigned int); | |
f958ca5d PS |
330 | /* remove directory */ |
331 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
332 | struct cifs_sb_info *); | |
ed6875e0 PS |
333 | /* unlink file */ |
334 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
335 | struct cifs_sb_info *); | |
336 | /* open, rename and delete file */ | |
337 | int (*rename_pending_delete)(const char *, struct dentry *, | |
338 | const unsigned int); | |
8ceb9843 PS |
339 | /* send rename request */ |
340 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
341 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
342 | /* send create hardlink request */ |
343 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
344 | const char *, const char *, | |
345 | struct cifs_sb_info *); | |
b42bf888 PS |
346 | /* query symlink target */ |
347 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
348 | const char *, char **, struct cifs_sb_info *); | |
fb1214e4 | 349 | /* open a file for non-posix mounts */ |
226730b4 PS |
350 | int (*open)(const unsigned int, struct cifs_open_parms *, |
351 | __u32 *, FILE_ALL_INFO *); | |
fb1214e4 PS |
352 | /* set fid protocol-specific info */ |
353 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 354 | /* close a file */ |
760ad0ca PS |
355 | void (*close)(const unsigned int, struct cifs_tcon *, |
356 | struct cifs_fid *); | |
1d8c4c00 PS |
357 | /* send a flush request to the server */ |
358 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
359 | /* async read from the server */ |
360 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 361 | /* async write to the server */ |
4a5c80d7 SF |
362 | int (*async_writev)(struct cifs_writedata *, |
363 | void (*release)(struct kref *)); | |
f9c6e234 | 364 | /* sync read from the server */ |
db8b631d | 365 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
366 | struct cifs_io_parms *, unsigned int *, char **, |
367 | int *); | |
ba9ad725 | 368 | /* sync write to the server */ |
db8b631d | 369 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
370 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
371 | unsigned long); | |
92fc65a7 PS |
372 | /* open dir, start readdir */ |
373 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
374 | const char *, struct cifs_sb_info *, | |
375 | struct cifs_fid *, __u16, | |
376 | struct cifs_search_info *); | |
377 | /* continue readdir */ | |
378 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
379 | struct cifs_fid *, | |
380 | __u16, struct cifs_search_info *srch_inf); | |
381 | /* close dir */ | |
382 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
383 | struct cifs_fid *); | |
384 | /* calculate a size of SMB message */ | |
9ec672bd | 385 | unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi); |
2e44b288 PS |
386 | /* check for STATUS_PENDING and process it in a positive case */ |
387 | bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); | |
511c54a2 PS |
388 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
389 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
390 | /* send oplock break response */ |
391 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
392 | struct cifsInodeInfo *); | |
76ec5e33 PS |
393 | /* query remote filesystem */ |
394 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
395 | struct kstatfs *); | |
d39a4f71 PS |
396 | /* send mandatory brlock to the server */ |
397 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
398 | __u64, __u32, int, int, bool); | |
399 | /* unlock range of mandatory locks */ | |
400 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
401 | const unsigned int); | |
402 | /* push brlocks from the cache to the server */ | |
403 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 404 | /* get lease key of the inode */ |
a41a28bd | 405 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 406 | /* set lease key of the inode */ |
a41a28bd | 407 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 408 | /* generate new lease key */ |
a41a28bd | 409 | void (*new_lease_key)(struct cifs_fid *); |
32811d24 | 410 | int (*generate_signingkey)(struct cifs_ses *); |
53ef1016 | 411 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *); |
b3152e2c SF |
412 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
413 | struct cifsFileInfo *src_file); | |
834170c8 SF |
414 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
415 | struct cifsFileInfo *src_file, void __user *); | |
b5be1a1c SP |
416 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
417 | struct cifs_sb_info *, const unsigned char *, | |
418 | char *, unsigned int *); | |
cbb0aba6 SP |
419 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
420 | struct cifs_sb_info *, const unsigned char *, | |
421 | char *, unsigned int *); | |
53ef1016 PS |
422 | /* if we can do cache read operations */ |
423 | bool (*is_read_op)(__u32); | |
424 | /* set oplock level for the inode */ | |
42873b0a PS |
425 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
426 | bool *); | |
a41a28bd | 427 | /* create lease context buffer for CREATE request */ |
729c0c9d | 428 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 429 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 430 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 431 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 432 | struct cifsFileInfo *src_file, |
620d8745 SP |
433 | struct cifsFileInfo *target_file, |
434 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
435 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
436 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
437 | u64 dest_off); | |
ff1c038a | 438 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
439 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
440 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 441 | size_t, struct cifs_sb_info *); |
666753c3 SF |
442 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
443 | const char *, const void *, const __u16, | |
5517554e | 444 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 SF |
445 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
446 | const char *, u32 *); | |
42eacf9e SF |
447 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
448 | const struct cifs_fid *, u32 *); | |
83e3bc23 SF |
449 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
450 | int); | |
7f6c5008 PS |
451 | /* writepages retry size */ |
452 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
453 | /* get mtu credits */ |
454 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
455 | unsigned int *, unsigned int *); | |
52755808 PS |
456 | /* check if we need to issue closedir */ |
457 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
458 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
459 | loff_t); | |
7fb8986e | 460 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
461 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
462 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
463 | int (*is_transform_hdr)(void *buf); |
464 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 465 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
466 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
467 | enum securityEnum); | |
8ce79ec3 | 468 | int (*next_header)(char *); |
f5b05d62 RS |
469 | /* ioctl passthrough for query_info */ |
470 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 RS |
471 | struct cifs_tcon *tcon, |
472 | __le16 *path, int is_dir, | |
f5b05d62 | 473 | unsigned long p); |
23db65f5 JL |
474 | }; |
475 | ||
476 | struct smb_version_values { | |
477 | char *version_string; | |
e4aa25e7 SF |
478 | __u16 protocol_id; |
479 | __u32 req_capabilities; | |
106dc538 PS |
480 | __u32 large_lock_type; |
481 | __u32 exclusive_lock_type; | |
482 | __u32 shared_lock_type; | |
483 | __u32 unlock_lock_type; | |
93012bf9 | 484 | size_t header_preamble_size; |
1887f601 PS |
485 | size_t header_size; |
486 | size_t max_header_size; | |
eb378711 | 487 | size_t read_rsp_size; |
2dc7e1c0 | 488 | __le16 lock_cmd; |
29e20f9c PS |
489 | unsigned int cap_unix; |
490 | unsigned int cap_nt_find; | |
491 | unsigned int cap_large_files; | |
50285882 JL |
492 | __u16 signing_enabled; |
493 | __u16 signing_required; | |
a41a28bd | 494 | size_t create_lease_size; |
23db65f5 JL |
495 | }; |
496 | ||
1887f601 PS |
497 | #define HEADER_SIZE(server) (server->vals->header_size) |
498 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
499 | ||
f87d39d9 SF |
500 | struct smb_vol { |
501 | char *username; | |
502 | char *password; | |
503 | char *domainname; | |
504 | char *UNC; | |
f87d39d9 SF |
505 | char *iocharset; /* local code page for mapping to and from Unicode */ |
506 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
507 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
3da46565 EB |
508 | kuid_t cred_uid; |
509 | kuid_t linux_uid; | |
510 | kgid_t linux_gid; | |
511 | kuid_t backupuid; | |
512 | kgid_t backupgid; | |
5206efd6 AV |
513 | umode_t file_mode; |
514 | umode_t dir_mode; | |
1e3cc57e JL |
515 | enum securityEnum sectype; /* sectype requested via mnt opts */ |
516 | bool sign; /* was signing requested via mnt opts? */ | |
f87d39d9 SF |
517 | bool retry:1; |
518 | bool intr:1; | |
519 | bool setuids:1; | |
95932655 | 520 | bool setuidfromacl:1; |
f87d39d9 SF |
521 | bool override_uid:1; |
522 | bool override_gid:1; | |
523 | bool dynperm:1; | |
524 | bool noperm:1; | |
525 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
526 | bool cifs_acl:1; | |
3d3ea8e6 SP |
527 | bool backupuid_specified; /* mount option backupuid is specified */ |
528 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
529 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
530 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
531 | bool direct_io:1; | |
532 | bool strict_io:1; /* strict cache behavior */ | |
533 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
2baa2682 | 534 | bool sfu_remap:1; /* remap seven reserved chars ala SFU */ |
f87d39d9 SF |
535 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
536 | bool no_linux_ext:1; | |
b326614e | 537 | bool linux_ext:1; |
f87d39d9 SF |
538 | bool sfu_emul:1; |
539 | bool nullauth:1; /* attempt to authenticate with null user */ | |
540 | bool nocase:1; /* request case insensitive filenames */ | |
541 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
3d4ef9a1 | 542 | bool nohandlecache:1; /* disable caching dir handles if srvr probs */ |
f87d39d9 SF |
543 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
544 | bool seal:1; /* request transport encryption on share */ | |
545 | bool nodfs:1; /* Do not request DFS, even if available */ | |
546 | bool local_lease:1; /* check leases only on local system, not remote */ | |
547 | bool noblocksnd:1; | |
548 | bool noautotune:1; | |
549 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
550 | bool fsc:1; /* enable fscache */ | |
551 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
552 | bool multiuser:1; | |
d4ffff1f | 553 | bool rwpidforward:1; /* pid forward for read/write operations */ |
b2a30774 SF |
554 | bool nosharesock:1; |
555 | bool persistent:1; | |
556 | bool nopersistent:1; | |
592fafe6 | 557 | bool resilient:1; /* noresilient not required since not fored for CA */ |
39566443 | 558 | bool domainauto:1; |
8339dd32 | 559 | bool rdma:1; |
f87d39d9 SF |
560 | unsigned int rsize; |
561 | unsigned int wsize; | |
562 | bool sockopt_tcp_nodelay:1; | |
f87d39d9 | 563 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
23db65f5 JL |
564 | struct smb_version_operations *ops; |
565 | struct smb_version_values *vals; | |
f87d39d9 | 566 | char *prepath; |
b979aaa1 | 567 | struct sockaddr_storage dstaddr; /* destination address */ |
f87d39d9 SF |
568 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
569 | struct nls_table *local_nls; | |
adfeb3e0 | 570 | unsigned int echo_interval; /* echo interval in secs */ |
8b217fe7 | 571 | __u64 snapshot_time; /* needed for timewarp tokens */ |
141891f4 | 572 | unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ |
f87d39d9 SF |
573 | }; |
574 | ||
25c7f41e PS |
575 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
576 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
577 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 578 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
579 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
580 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
581 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
582 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
583 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
584 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
585 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e | 586 | |
1751e8a6 LT |
587 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
588 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
589 | |
590 | struct cifs_mnt_data { | |
591 | struct cifs_sb_info *cifs_sb; | |
592 | struct smb_vol *vol; | |
593 | int flags; | |
594 | }; | |
595 | ||
792af7b0 PS |
596 | static inline unsigned int |
597 | get_rfc1002_length(void *buf) | |
598 | { | |
dca1c8d1 | 599 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
600 | } |
601 | ||
ec2e4523 PS |
602 | static inline void |
603 | inc_rfc1001_len(void *buf, int count) | |
604 | { | |
605 | be32_add_cpu((__be32 *)buf, count); | |
606 | } | |
607 | ||
1da177e4 | 608 | struct TCP_Server_Info { |
3b795210 SF |
609 | struct list_head tcp_ses_list; |
610 | struct list_head smb_ses_list; | |
e7ddee90 | 611 | int srv_count; /* reference counter */ |
a10faeb2 | 612 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 613 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
614 | struct smb_version_operations *ops; |
615 | struct smb_version_values *vals; | |
c3dccf48 | 616 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 617 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 618 | struct socket *ssocket; |
a9f1b85e | 619 | struct sockaddr_storage dstaddr; |
3eb9a889 | 620 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
621 | #ifdef CONFIG_NET_NS |
622 | struct net *net; | |
623 | #endif | |
d38d8c74 | 624 | wait_queue_head_t response_q; |
1da177e4 LT |
625 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
626 | struct list_head pending_mid_q; | |
edf1ae40 SF |
627 | bool noblocksnd; /* use blocking sendmsg */ |
628 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 629 | bool tcp_nodelay; |
141891f4 SF |
630 | unsigned int credits; /* send no more requests at once */ |
631 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 632 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 633 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 634 | struct mutex srv_mutex; |
1da177e4 LT |
635 | struct task_struct *tsk; |
636 | char server_GUID[16]; | |
286170aa | 637 | __u16 sec_mode; |
38d77c50 | 638 | bool sign; /* is signing enabled on this connection? */ |
c3dccf48 | 639 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
640 | int echo_credits; /* echo reserved slots */ |
641 | int oplock_credits; /* oplock break reserved slots */ | |
642 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 643 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 644 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 645 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
646 | unsigned int maxReq; /* Clients should submit no more */ |
647 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 648 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
649 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
650 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
651 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
652 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 653 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
654 | /* message size the server can send or receive for */ |
655 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 656 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 657 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 658 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 659 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 660 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 661 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 662 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 663 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 664 | struct session_key session_key; |
3a5ff61c | 665 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 666 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
667 | #define CIFS_NEGFLAVOR_LANMAN 0 /* wct == 13, LANMAN */ |
668 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ | |
669 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
670 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 671 | /* extended security flavors that server supports */ |
c3dccf48 JL |
672 | bool sec_ntlmssp; /* supports NTLMSSP */ |
673 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
674 | bool sec_kerberos; /* supports plain Kerberos */ |
675 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 676 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
677 | /* use SMBD connection instead of socket */ |
678 | bool rdma; | |
679 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
680 | struct smbd_connection *smbd_conn; | |
c74093b6 | 681 | struct delayed_work echo; /* echo ping workqueue job */ |
2a37ef94 JL |
682 | char *smallbuf; /* pointer to current "small" buffer */ |
683 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
684 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
685 | unsigned int pdu_size; | |
2a37ef94 | 686 | unsigned int total_read; /* total amount of data read in this pass */ |
488f1d2d SJ |
687 | #ifdef CONFIG_CIFS_FSCACHE |
688 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
689 | #endif | |
c3dccf48 | 690 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 691 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 | 692 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
468d6779 SF |
693 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
694 | #endif /* STATS2 */ | |
ec2e4523 PS |
695 | unsigned int max_read; |
696 | unsigned int max_write; | |
5100d8a3 | 697 | __le16 cipher_type; |
8bd68c6e AA |
698 | /* save initital negprot hash */ |
699 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
fcef0db6 | 700 | bool posix_ext_supported; |
53e0e11e PS |
701 | struct delayed_work reconnect; /* reconnect workqueue job */ |
702 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 703 | unsigned long echo_interval; |
93d5cb51 PA |
704 | |
705 | /* | |
706 | * Number of targets available for reconnect. The more targets | |
707 | * the more tasks have to wait to let the demultiplex thread | |
708 | * reconnect. | |
709 | */ | |
710 | int nr_targets; | |
1da177e4 LT |
711 | }; |
712 | ||
fc40f9cf PS |
713 | static inline unsigned int |
714 | in_flight(struct TCP_Server_Info *server) | |
715 | { | |
716 | unsigned int num; | |
717 | spin_lock(&server->req_lock); | |
718 | num = server->in_flight; | |
719 | spin_unlock(&server->req_lock); | |
720 | return num; | |
721 | } | |
722 | ||
2d86dbc9 | 723 | static inline bool |
bc205ed1 | 724 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 725 | { |
2d86dbc9 | 726 | int num; |
fc40f9cf | 727 | spin_lock(&server->req_lock); |
bc205ed1 | 728 | num = *credits; |
fc40f9cf | 729 | spin_unlock(&server->req_lock); |
2d86dbc9 | 730 | return num > 0; |
fc40f9cf PS |
731 | } |
732 | ||
45275789 | 733 | static inline void |
a891f0f8 PS |
734 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
735 | const int optype) | |
45275789 | 736 | { |
a891f0f8 | 737 | server->ops->add_credits(server, add, optype); |
45275789 PS |
738 | } |
739 | ||
cb7e9eab PS |
740 | static inline void |
741 | add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add, | |
742 | const int optype) | |
743 | { | |
744 | if (add) { | |
745 | server->ops->add_credits(server, add, optype); | |
746 | wake_up(&server->request_q); | |
747 | } | |
748 | } | |
749 | ||
45275789 PS |
750 | static inline void |
751 | set_credits(struct TCP_Server_Info *server, const int val) | |
752 | { | |
753 | server->ops->set_credits(server, val); | |
754 | } | |
755 | ||
9235d098 | 756 | static inline __le64 |
3d378d3f | 757 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 758 | { |
9235d098 | 759 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
760 | } |
761 | ||
3d378d3f TG |
762 | static inline __le16 |
763 | get_next_mid(struct TCP_Server_Info *server) | |
764 | { | |
9235d098 | 765 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
766 | /* |
767 | * The value in the SMB header should be little endian for easy | |
768 | * on-the-wire decoding. | |
769 | */ | |
770 | return cpu_to_le16(mid); | |
771 | } | |
772 | ||
773 | static inline __u16 | |
774 | get_mid(const struct smb_hdr *smb) | |
775 | { | |
776 | return le16_to_cpu(smb->Mid); | |
777 | } | |
778 | ||
779 | static inline bool | |
780 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
781 | { | |
782 | return mid == le16_to_cpu(smb->Mid); | |
783 | } | |
784 | ||
24985c53 PS |
785 | /* |
786 | * When the server supports very large reads and writes via POSIX extensions, | |
787 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
788 | * including the RFC1001 length. | |
789 | * | |
790 | * Note that this might make for "interesting" allocation problems during | |
791 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 792 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
793 | * |
794 | * For reads, there is a similar problem as we need to allocate an array | |
795 | * of kvecs to handle the receive, though that should only need to be done | |
796 | * once. | |
797 | */ | |
798 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
799 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
800 | ||
801 | /* | |
802 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
803 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
804 | * write up to the maximum size described by RFC1002. | |
805 | */ | |
806 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
807 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
808 | ||
809 | /* | |
810 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 | |
ea1754a0 | 811 | * pages in a single call. With PAGE_SIZE == 4k, this means we can fill |
24985c53 PS |
812 | * a single wsize request with a single call. |
813 | */ | |
814 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) | |
3d621230 | 815 | #define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024) |
24985c53 PS |
816 | |
817 | /* | |
818 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
819 | * those values when posix extensions aren't in force. In actuality here, we | |
820 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
821 | * to be ok with the extra byte even though Windows doesn't send writes that | |
822 | * are that large. | |
823 | * | |
824 | * Citation: | |
825 | * | |
826 | * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx | |
827 | */ | |
828 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
829 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
830 | ||
f1d0c998 RL |
831 | /* |
832 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
833 | * when CONFIG_NET_NS isn't set. | |
834 | */ | |
835 | ||
836 | #ifdef CONFIG_NET_NS | |
837 | ||
838 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
839 | { | |
840 | return srv->net; | |
841 | } | |
842 | ||
843 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
844 | { | |
845 | srv->net = net; | |
846 | } | |
847 | ||
848 | #else | |
849 | ||
850 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
851 | { | |
852 | return &init_net; | |
853 | } | |
854 | ||
855 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
856 | { | |
857 | } | |
858 | ||
859 | #endif | |
860 | ||
b6f0dd5d AA |
861 | struct cifs_server_iface { |
862 | size_t speed; | |
863 | unsigned int rdma_capable : 1; | |
864 | unsigned int rss_capable : 1; | |
865 | struct sockaddr_storage sockaddr; | |
866 | }; | |
867 | ||
1da177e4 LT |
868 | /* |
869 | * Session structure. One of these for each uid session with a particular host | |
870 | */ | |
96daf2b0 | 871 | struct cifs_ses { |
14fbf50d | 872 | struct list_head smb_ses_list; |
3b795210 | 873 | struct list_head tcon_list; |
b327a717 | 874 | struct cifs_tcon *tcon_ipc; |
d7b619cf | 875 | struct mutex session_mutex; |
1da177e4 | 876 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 877 | int ses_count; /* reference counter */ |
1da177e4 | 878 | enum statusEnum status; |
750d1151 | 879 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
880 | char *serverOS; /* name of operating system underlying server */ |
881 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 882 | char *serverDomain; /* security realm of server */ |
286170aa | 883 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
884 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
885 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 886 | unsigned int capabilities; |
b327a717 | 887 | char serverName[SERVER_NAME_LEN_WITH_NULL]; |
34c87901 SF |
888 | char *user_name; /* must not be null except during init of sess |
889 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
890 | char *domainName; |
891 | char *password; | |
5d0d2882 | 892 | struct session_key auth_key; |
d3686d54 | 893 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
894 | enum securityEnum sectype; /* what security flavor was specified? */ |
895 | bool sign; /* is signing required? */ | |
3b795210 | 896 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
39566443 | 897 | bool domainAuto:1; |
5478f9ba | 898 | __u16 session_flags; |
373512ec SF |
899 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
900 | __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE]; | |
901 | __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE]; | |
8bd68c6e | 902 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d AA |
903 | |
904 | /* | |
905 | * Network interfaces available on the server this session is | |
906 | * connected to. | |
907 | * | |
908 | * Other channels can be opened by connecting and binding this | |
909 | * session to interfaces from this list. | |
910 | * | |
911 | * iface_lock should be taken when accessing any of these fields | |
912 | */ | |
913 | spinlock_t iface_lock; | |
914 | struct cifs_server_iface *iface_list; | |
915 | size_t iface_count; | |
916 | unsigned long iface_last_update; /* jiffies */ | |
1da177e4 | 917 | }; |
233839b1 | 918 | |
29e20f9c PS |
919 | static inline bool |
920 | cap_unix(struct cifs_ses *ses) | |
921 | { | |
922 | return ses->server->vals->cap_unix & ses->capabilities; | |
923 | } | |
924 | ||
a93864d9 RS |
925 | struct cached_fid { |
926 | bool is_valid:1; /* Do we have a useable root fid */ | |
9da6ec77 | 927 | struct kref refcount; |
a93864d9 RS |
928 | struct cifs_fid *fid; |
929 | struct mutex fid_mutex; | |
930 | struct cifs_tcon *tcon; | |
931 | struct work_struct lease_break; | |
932 | }; | |
933 | ||
1da177e4 LT |
934 | /* |
935 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 936 | * session |
1da177e4 | 937 | */ |
96daf2b0 | 938 | struct cifs_tcon { |
f1987b44 JL |
939 | struct list_head tcon_list; |
940 | int tc_count; | |
53e0e11e | 941 | struct list_head rlist; /* reconnect list */ |
fae8044c SF |
942 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
943 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 944 | struct list_head openFileList; |
3afca265 | 945 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 946 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 947 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 948 | char *nativeFileSystem; |
00e485b0 | 949 | char *password; /* for share-level security */ |
faaf946a | 950 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
951 | __u16 Flags; /* optional support bits */ |
952 | enum statusEnum tidStatus; | |
1da177e4 | 953 | atomic_t num_smbs_sent; |
44c58186 PS |
954 | union { |
955 | struct { | |
956 | atomic_t num_writes; | |
957 | atomic_t num_reads; | |
958 | atomic_t num_flushes; | |
959 | atomic_t num_oplock_brks; | |
960 | atomic_t num_opens; | |
961 | atomic_t num_closes; | |
962 | atomic_t num_deletes; | |
963 | atomic_t num_mkdirs; | |
964 | atomic_t num_posixopens; | |
965 | atomic_t num_posixmkdirs; | |
966 | atomic_t num_rmdirs; | |
967 | atomic_t num_renames; | |
968 | atomic_t num_t2renames; | |
969 | atomic_t num_ffirst; | |
970 | atomic_t num_fnext; | |
971 | atomic_t num_fclose; | |
972 | atomic_t num_hardlinks; | |
973 | atomic_t num_symlinks; | |
974 | atomic_t num_locks; | |
975 | atomic_t num_acl_get; | |
976 | atomic_t num_acl_set; | |
977 | } cifs_stats; | |
d60622eb PS |
978 | struct { |
979 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
980 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
981 | } smb2_stats; | |
44c58186 | 982 | } stats; |
1da177e4 LT |
983 | __u64 bytes_read; |
984 | __u64 bytes_written; | |
3afca265 | 985 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 986 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 987 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 988 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
989 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
990 | bool pipe:1; /* set if connection to pipe share */ | |
991 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
992 | bool retry:1; |
993 | bool nocase:1; | |
3d4ef9a1 | 994 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
95b1cb90 | 995 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 996 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 997 | for this mount even if server would support */ |
b326614e | 998 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 999 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1000 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1001 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1002 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1003 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1004 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1005 | bool use_persistent:1; /* use persistent instead of durable handles */ |
769ee6a4 | 1006 | __le32 capabilities; |
faaf946a PS |
1007 | __u32 share_flags; |
1008 | __u32 maximal_access; | |
1009 | __u32 vol_serial_number; | |
1010 | __le64 vol_create_time; | |
8b217fe7 | 1011 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
af6a12ea SF |
1012 | __u32 ss_flags; /* sector size flags */ |
1013 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1014 | __u32 max_chunks; |
1015 | __u32 max_bytes_chunk; | |
1016 | __u32 max_bytes_copy; | |
d03382ce SJ |
1017 | #ifdef CONFIG_CIFS_FSCACHE |
1018 | u64 resource_id; /* server resource id */ | |
1019 | struct fscache_cookie *fscache; /* cookie for share */ | |
1020 | #endif | |
233839b1 | 1021 | struct list_head pending_opens; /* list of incomplete opens */ |
a93864d9 | 1022 | struct cached_fid crfid; /* Cached root fid */ |
c18c842b | 1023 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c PA |
1024 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1025 | char *dfs_path; | |
1026 | int remap:2; | |
1027 | struct list_head ulist; /* cache update list */ | |
1028 | #endif | |
1da177e4 LT |
1029 | }; |
1030 | ||
7ffec372 JL |
1031 | /* |
1032 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1033 | * container holds a tcon reference. It is considered safe to free one of | |
1034 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1035 | * "get" on the container. | |
1036 | */ | |
1037 | struct tcon_link { | |
b647c35f | 1038 | struct rb_node tl_rbnode; |
6d4a0832 | 1039 | kuid_t tl_uid; |
9d002df4 JL |
1040 | unsigned long tl_flags; |
1041 | #define TCON_LINK_MASTER 0 | |
1042 | #define TCON_LINK_PENDING 1 | |
1043 | #define TCON_LINK_IN_TREE 2 | |
1044 | unsigned long tl_time; | |
1045 | atomic_t tl_count; | |
96daf2b0 | 1046 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1047 | }; |
1048 | ||
9d002df4 | 1049 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1050 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1051 | |
96daf2b0 | 1052 | static inline struct cifs_tcon * |
7ffec372 JL |
1053 | tlink_tcon(struct tcon_link *tlink) |
1054 | { | |
9d002df4 | 1055 | return tlink->tl_tcon; |
7ffec372 JL |
1056 | } |
1057 | ||
8ddecf5f AA |
1058 | static inline struct tcon_link * |
1059 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1060 | { | |
1061 | return cifs_sb->master_tlink; | |
1062 | } | |
1063 | ||
9d002df4 | 1064 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1065 | |
13cfb733 JL |
1066 | static inline struct tcon_link * |
1067 | cifs_get_tlink(struct tcon_link *tlink) | |
1068 | { | |
9d002df4 JL |
1069 | if (tlink && !IS_ERR(tlink)) |
1070 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1071 | return tlink; |
1072 | } | |
1073 | ||
7ffec372 | 1074 | /* This function is always expected to succeed */ |
96daf2b0 | 1075 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1076 | |
233839b1 PS |
1077 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1078 | ||
1079 | struct cifs_pending_open { | |
1080 | struct list_head olist; | |
1081 | struct tcon_link *tlink; | |
1082 | __u8 lease_key[16]; | |
1083 | __u32 oplock; | |
1084 | }; | |
1085 | ||
1da177e4 | 1086 | /* |
7ee1af76 JA |
1087 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1088 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1089 | */ |
1090 | struct cifsLockInfo { | |
7ee1af76 | 1091 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1092 | struct list_head blist; /* pointer to locks blocked on this */ |
1093 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1094 | __u64 offset; |
1095 | __u64 length; | |
03776f45 | 1096 | __u32 pid; |
9645759c RS |
1097 | __u16 type; |
1098 | __u16 flags; | |
1da177e4 LT |
1099 | }; |
1100 | ||
1101 | /* | |
1102 | * One of these for each open instance of a file | |
1103 | */ | |
1104 | struct cifs_search_info { | |
1105 | loff_t index_of_last_entry; | |
1106 | __u16 entries_in_buffer; | |
1107 | __u16 info_level; | |
1108 | __u32 resume_key; | |
d38d8c74 SF |
1109 | char *ntwrk_buf_start; |
1110 | char *srch_entries_start; | |
0752f152 | 1111 | char *last_entry; |
eaf35b1e | 1112 | const char *presume_name; |
1da177e4 | 1113 | unsigned int resume_name_len; |
4b18f2a9 SF |
1114 | bool endOfSearch:1; |
1115 | bool emptyDir:1; | |
1116 | bool unicode:1; | |
1117 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1118 | }; |
1119 | ||
226730b4 PS |
1120 | struct cifs_open_parms { |
1121 | struct cifs_tcon *tcon; | |
1122 | struct cifs_sb_info *cifs_sb; | |
1123 | int disposition; | |
1124 | int desired_access; | |
1125 | int create_options; | |
1126 | const char *path; | |
1127 | struct cifs_fid *fid; | |
ce558b0e | 1128 | umode_t mode; |
9cbc0b73 | 1129 | bool reconnect:1; |
226730b4 PS |
1130 | }; |
1131 | ||
4b4de76e PS |
1132 | struct cifs_fid { |
1133 | __u16 netfid; | |
f0df737e PS |
1134 | __u64 persistent_fid; /* persist file id for smb2 */ |
1135 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1136 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1137 | __u8 create_guid[16]; |
233839b1 | 1138 | struct cifs_pending_open *pending_open; |
42873b0a | 1139 | unsigned int epoch; |
dfe33f9a SF |
1140 | #ifdef CONFIG_CIFS_DEBUG2 |
1141 | __u64 mid; | |
1142 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1143 | bool purge_cache; |
4b4de76e PS |
1144 | }; |
1145 | ||
f45d3416 PS |
1146 | struct cifs_fid_locks { |
1147 | struct list_head llist; | |
1148 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1149 | struct list_head locks; /* locks held by fid above */ | |
1150 | }; | |
1151 | ||
1da177e4 | 1152 | struct cifsFileInfo { |
3afca265 | 1153 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1154 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1155 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1156 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1157 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1158 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1159 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1160 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1161 | struct list_head rlist; /* reconnect list */ |
1da177e4 LT |
1162 | /* BB add lock scope info here if needed */ ; |
1163 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 1164 | struct dentry *dentry; |
13cfb733 | 1165 | struct tcon_link *tlink; |
3afca265 | 1166 | unsigned int f_flags; |
4b18f2a9 | 1167 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 1168 | bool oplock_break_cancelled:1; |
3afca265 SF |
1169 | int count; |
1170 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1171 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1172 | struct cifs_search_info srch_inf; |
9b646972 | 1173 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
1174 | }; |
1175 | ||
fa2989f4 PS |
1176 | struct cifs_io_parms { |
1177 | __u16 netfid; | |
09a4707e PS |
1178 | __u64 persistent_fid; /* persist file id for smb2 */ |
1179 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1180 | __u32 pid; |
1181 | __u64 offset; | |
1182 | unsigned int length; | |
96daf2b0 | 1183 | struct cifs_tcon *tcon; |
fa2989f4 PS |
1184 | }; |
1185 | ||
ccf7f408 PS |
1186 | struct cifs_aio_ctx { |
1187 | struct kref refcount; | |
1188 | struct list_head list; | |
1189 | struct mutex aio_mutex; | |
1190 | struct completion done; | |
1191 | struct iov_iter iter; | |
1192 | struct kiocb *iocb; | |
1193 | struct cifsFileInfo *cfile; | |
1194 | struct bio_vec *bv; | |
c610c4b6 | 1195 | loff_t pos; |
ccf7f408 PS |
1196 | unsigned int npages; |
1197 | ssize_t rc; | |
1198 | unsigned int len; | |
1199 | unsigned int total_len; | |
1200 | bool should_dirty; | |
6e6e2b86 LL |
1201 | /* |
1202 | * Indicates if this aio_ctx is for direct_io, | |
1203 | * If yes, iter is a copy of the user passed iov_iter | |
1204 | */ | |
1205 | bool direct_io; | |
ccf7f408 PS |
1206 | }; |
1207 | ||
09a4707e PS |
1208 | struct cifs_readdata; |
1209 | ||
1210 | /* asynchronous read support */ | |
1211 | struct cifs_readdata { | |
1212 | struct kref refcount; | |
1213 | struct list_head list; | |
1214 | struct completion done; | |
1215 | struct cifsFileInfo *cfile; | |
1216 | struct address_space *mapping; | |
6685c5e2 | 1217 | struct cifs_aio_ctx *ctx; |
09a4707e PS |
1218 | __u64 offset; |
1219 | unsigned int bytes; | |
34a54d61 | 1220 | unsigned int got_bytes; |
09a4707e PS |
1221 | pid_t pid; |
1222 | int result; | |
09a4707e | 1223 | struct work_struct work; |
8321fec4 JL |
1224 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1225 | struct cifs_readdata *rdata, | |
1226 | unsigned int len); | |
d70b9104 PS |
1227 | int (*copy_into_pages)(struct TCP_Server_Info *server, |
1228 | struct cifs_readdata *rdata, | |
1229 | struct iov_iter *iter); | |
738f9de5 | 1230 | struct kvec iov[2]; |
74dcf418 LL |
1231 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1232 | struct smbd_mr *mr; | |
1233 | #endif | |
8321fec4 | 1234 | unsigned int pagesz; |
57a929a6 | 1235 | unsigned int page_offset; |
8321fec4 | 1236 | unsigned int tailsz; |
bed9da02 | 1237 | unsigned int credits; |
c5fab6f4 | 1238 | unsigned int nr_pages; |
f9f5aca1 | 1239 | struct page **pages; |
09a4707e PS |
1240 | }; |
1241 | ||
33319141 PS |
1242 | struct cifs_writedata; |
1243 | ||
1244 | /* asynchronous write support */ | |
1245 | struct cifs_writedata { | |
1246 | struct kref refcount; | |
1247 | struct list_head list; | |
1248 | struct completion done; | |
1249 | enum writeback_sync_modes sync_mode; | |
1250 | struct work_struct work; | |
1251 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1252 | struct cifs_aio_ctx *ctx; |
33319141 PS |
1253 | __u64 offset; |
1254 | pid_t pid; | |
1255 | unsigned int bytes; | |
1256 | int result; | |
db223a59 LL |
1257 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1258 | struct smbd_mr *mr; | |
1259 | #endif | |
eddb079d | 1260 | unsigned int pagesz; |
57a929a6 | 1261 | unsigned int page_offset; |
eddb079d | 1262 | unsigned int tailsz; |
cb7e9eab | 1263 | unsigned int credits; |
33319141 | 1264 | unsigned int nr_pages; |
8e7360f6 | 1265 | struct page **pages; |
33319141 PS |
1266 | }; |
1267 | ||
5f6dbc9e JL |
1268 | /* |
1269 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1270 | * cfile->file_info_lock held. |
5f6dbc9e | 1271 | */ |
764a1b1a JL |
1272 | static inline void |
1273 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1274 | { |
5f6dbc9e | 1275 | ++cifs_file->count; |
6ab409b5 DK |
1276 | } |
1277 | ||
764a1b1a | 1278 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
b33879aa | 1279 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1280 | |
18cceb6a PS |
1281 | #define CIFS_CACHE_READ_FLG 1 |
1282 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1283 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1284 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1285 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1286 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a PS |
1287 | |
1288 | #define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG) | |
53ef1016 | 1289 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
18cceb6a PS |
1290 | #define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG) |
1291 | ||
1da177e4 LT |
1292 | /* |
1293 | * One of these for each file inode | |
1294 | */ | |
1295 | ||
1296 | struct cifsInodeInfo { | |
d59dad2b | 1297 | bool can_cache_brlcks; |
f45d3416 | 1298 | struct list_head llist; /* locks helb by this inode */ |
1b4b55a1 | 1299 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1300 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1301 | struct list_head openFileList; |
1da177e4 | 1302 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1303 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1304 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1305 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1306 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
1307 | #define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */ | |
aff8d5ca JL |
1308 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1309 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1310 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
aff8d5ca | 1311 | unsigned long flags; |
c11f1df5 SP |
1312 | spinlock_t writers_lock; |
1313 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1314 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1315 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1316 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1317 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1318 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
9451a9a5 SJ |
1319 | #ifdef CONFIG_CIFS_FSCACHE |
1320 | struct fscache_cookie *fscache; | |
1321 | #endif | |
1da177e4 LT |
1322 | struct inode vfs_inode; |
1323 | }; | |
1324 | ||
1325 | static inline struct cifsInodeInfo * | |
1326 | CIFS_I(struct inode *inode) | |
1327 | { | |
1328 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
1329 | } | |
1330 | ||
1331 | static inline struct cifs_sb_info * | |
1332 | CIFS_SB(struct super_block *sb) | |
1333 | { | |
1334 | return sb->s_fs_info; | |
1335 | } | |
1336 | ||
7119e220 AV |
1337 | static inline struct cifs_sb_info * |
1338 | CIFS_FILE_SB(struct file *file) | |
1339 | { | |
1340 | return CIFS_SB(file_inode(file)->i_sb); | |
1341 | } | |
1342 | ||
ab2f218f | 1343 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1344 | { |
1345 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1346 | return '/'; | |
1347 | else | |
1348 | return '\\'; | |
1349 | } | |
1da177e4 | 1350 | |
f87d39d9 SF |
1351 | static inline void |
1352 | convert_delimiter(char *path, char delim) | |
1353 | { | |
1cc9bd68 | 1354 | char old_delim, *pos; |
f87d39d9 SF |
1355 | |
1356 | if (delim == '/') | |
1357 | old_delim = '\\'; | |
1358 | else | |
1359 | old_delim = '/'; | |
1360 | ||
1cc9bd68 SF |
1361 | pos = path; |
1362 | while ((pos = strchr(pos, old_delim))) | |
1363 | *pos = delim; | |
f87d39d9 SF |
1364 | } |
1365 | ||
a4544347 SF |
1366 | #define cifs_stats_inc atomic_inc |
1367 | ||
96daf2b0 | 1368 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1369 | unsigned int bytes) |
1370 | { | |
1371 | if (bytes) { | |
1372 | spin_lock(&tcon->stat_lock); | |
1373 | tcon->bytes_written += bytes; | |
1374 | spin_unlock(&tcon->stat_lock); | |
1375 | } | |
1376 | } | |
1377 | ||
96daf2b0 | 1378 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1379 | unsigned int bytes) |
1380 | { | |
1381 | spin_lock(&tcon->stat_lock); | |
1382 | tcon->bytes_read += bytes; | |
1383 | spin_unlock(&tcon->stat_lock); | |
1384 | } | |
a4544347 | 1385 | |
2b84a36c JL |
1386 | |
1387 | /* | |
44d22d84 JL |
1388 | * This is the prototype for the mid receive function. This function is for |
1389 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1390 | * just after the MID in struct smb_hdr). Note: | |
1391 | * | |
1392 | * - This will be called by cifsd, with no locks held. | |
1393 | * - The mid will still be on the pending_mid_q. | |
1394 | * - mid->resp_buf will point to the current buffer. | |
1395 | * | |
1396 | * Returns zero on a successful receive, or an error. The receive state in | |
1397 | * the TCP_Server_Info will also be updated. | |
1398 | */ | |
1399 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1400 | struct mid_q_entry *mid); | |
1401 | ||
1402 | /* | |
1403 | * This is the prototype for the mid callback function. This is called once the | |
1404 | * mid has been received off of the socket. When creating one, take special | |
1405 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1406 | * |
3c1105df JL |
1407 | * - it will be called by cifsd, with no locks held |
1408 | * - the mid will be removed from any lists | |
2b84a36c JL |
1409 | */ |
1410 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1411 | ||
9b7c18a2 PS |
1412 | /* |
1413 | * This is the protopyte for mid handle function. This is called once the mid | |
1414 | * has been recognized after decryption of the message. | |
1415 | */ | |
1416 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1417 | struct mid_q_entry *mid); | |
1418 | ||
1da177e4 LT |
1419 | /* one of these for every pending CIFS request to the server */ |
1420 | struct mid_q_entry { | |
1421 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1422 | struct kref refcount; |
2dc7e1c0 | 1423 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
1424 | __u64 mid; /* multiplex id */ |
1425 | __u32 pid; /* process id */ | |
1da177e4 | 1426 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1427 | unsigned long when_alloc; /* when mid was created */ |
1428 | #ifdef CONFIG_CIFS_STATS2 | |
1429 | unsigned long when_sent; /* time when smb send finished */ | |
1430 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1431 | #endif | |
44d22d84 | 1432 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1433 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1434 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1435 | void *callback_data; /* general purpose pointer for callback */ |
d4e4854f | 1436 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1437 | unsigned int resp_buf_size; |
7c9421e1 | 1438 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1439 | unsigned int mid_flags; |
7c9421e1 | 1440 | __le16 command; /* smb command code */ |
8a26f0f7 | 1441 | unsigned int optype; /* operation type */ |
7c9421e1 | 1442 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1443 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1444 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1445 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1446 | }; |
1447 | ||
38bd4906 SP |
1448 | struct close_cancelled_open { |
1449 | struct cifs_fid fid; | |
1450 | struct cifs_tcon *tcon; | |
1451 | struct work_struct work; | |
1452 | }; | |
1453 | ||
789e6661 SF |
1454 | /* Make code in transport.c a little cleaner by moving |
1455 | update of optional stats into function below */ | |
1456 | #ifdef CONFIG_CIFS_STATS2 | |
1457 | ||
1458 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1459 | { | |
1460 | atomic_inc(&server->in_send); | |
1461 | } | |
1462 | ||
1463 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1464 | { | |
1465 | atomic_dec(&server->in_send); | |
1466 | } | |
1467 | ||
1468 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1469 | { | |
1470 | atomic_inc(&server->num_waiters); | |
1471 | } | |
1472 | ||
1473 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1474 | { | |
1475 | atomic_dec(&server->num_waiters); | |
1476 | } | |
1477 | ||
1478 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1479 | { | |
1480 | mid->when_sent = jiffies; | |
1481 | } | |
1482 | #else | |
1483 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
1484 | { | |
1485 | } | |
1486 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1487 | { | |
1488 | } | |
1489 | ||
1490 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1491 | { | |
1492 | } | |
1493 | ||
1494 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1495 | { | |
1496 | } | |
1497 | ||
1498 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
1499 | { | |
1500 | } | |
1501 | #endif | |
1da177e4 | 1502 | |
ff5dbd9e SF |
1503 | /* for pending dnotify requests */ |
1504 | struct dir_notify_req { | |
13cd4b7f SF |
1505 | struct list_head lhead; |
1506 | __le16 Pid; | |
1507 | __le16 PidHigh; | |
1508 | __u16 Mid; | |
1509 | __u16 Tid; | |
1510 | __u16 Uid; | |
1511 | __u16 netfid; | |
1512 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1513 | int multishot; | |
1514 | struct file *pfile; | |
ff5dbd9e SF |
1515 | }; |
1516 | ||
366781c1 SF |
1517 | struct dfs_info3_param { |
1518 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1519 | int path_consumed; |
366781c1 SF |
1520 | int server_type; |
1521 | int ref_flag; | |
1522 | char *path_name; | |
1523 | char *node_name; | |
e7b602f4 | 1524 | int ttl; |
366781c1 SF |
1525 | }; |
1526 | ||
cc0bad75 JL |
1527 | /* |
1528 | * common struct for holding inode info when searching for or updating an | |
1529 | * inode with new info | |
1530 | */ | |
1531 | ||
1532 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
1533 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
1534 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 1535 | #define CIFS_FATTR_INO_COLLISION 0x8 |
74d290da | 1536 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 |
7ea884c7 | 1537 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 |
cc0bad75 JL |
1538 | |
1539 | struct cifs_fattr { | |
1540 | u32 cf_flags; | |
1541 | u32 cf_cifsattrs; | |
1542 | u64 cf_uniqueid; | |
1543 | u64 cf_eof; | |
1544 | u64 cf_bytes; | |
20054bd6 | 1545 | u64 cf_createtime; |
4a2c8cf5 EB |
1546 | kuid_t cf_uid; |
1547 | kgid_t cf_gid; | |
cc0bad75 JL |
1548 | umode_t cf_mode; |
1549 | dev_t cf_rdev; | |
1550 | unsigned int cf_nlink; | |
1551 | unsigned int cf_dtype; | |
95390201 AB |
1552 | struct timespec64 cf_atime; |
1553 | struct timespec64 cf_mtime; | |
1554 | struct timespec64 cf_ctime; | |
cc0bad75 JL |
1555 | }; |
1556 | ||
366781c1 SF |
1557 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1558 | { | |
1559 | if (param) { | |
1560 | kfree(param->path_name); | |
1561 | kfree(param->node_name); | |
366781c1 SF |
1562 | } |
1563 | } | |
1564 | ||
1565 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1566 | int number_of_items) | |
1567 | { | |
1568 | int i; | |
1569 | if ((number_of_items == 0) || (param == NULL)) | |
1570 | return; | |
1571 | for (i = 0; i < number_of_items; i++) { | |
1572 | kfree(param[i].path_name); | |
1573 | kfree(param[i].node_name); | |
1574 | } | |
1575 | kfree(param); | |
1576 | } | |
1577 | ||
9a66396f PS |
1578 | static inline bool is_interrupt_error(int error) |
1579 | { | |
1580 | switch (error) { | |
1581 | case -EINTR: | |
1582 | case -ERESTARTSYS: | |
1583 | case -ERESTARTNOHAND: | |
1584 | case -ERESTARTNOINTR: | |
1585 | return true; | |
1586 | } | |
1587 | return false; | |
1588 | } | |
1589 | ||
1590 | static inline bool is_retryable_error(int error) | |
1591 | { | |
1592 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1593 | return true; | |
1594 | return false; | |
1595 | } | |
1596 | ||
1da177e4 LT |
1597 | #define MID_FREE 0 |
1598 | #define MID_REQUEST_ALLOCATED 1 | |
1599 | #define MID_REQUEST_SUBMITTED 2 | |
1600 | #define MID_RESPONSE_RECEIVED 4 | |
1601 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1602 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1603 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1604 | |
38bd4906 SP |
1605 | /* Flags */ |
1606 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1607 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1608 | |
ec637e3f SF |
1609 | /* Types of response buffer returned from SendReceive2 */ |
1610 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1611 | #define CIFS_SMALL_BUFFER 1 | |
1612 | #define CIFS_LARGE_BUFFER 2 | |
1613 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1614 | |
133672ef | 1615 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1616 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1617 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1618 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1619 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1620 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1621 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1622 | ||
a891f0f8 PS |
1623 | /* Type of request operation */ |
1624 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1625 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1626 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1627 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
7fb8986e | 1628 | |
cb7e9eab | 1629 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
7fb8986e | 1630 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ |
a891f0f8 | 1631 | |
3979877e SF |
1632 | /* Security Flags: indicate type of session setup needed */ |
1633 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1634 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1635 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1636 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1637 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1638 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1639 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1640 | #else |
1641 | #define CIFSSEC_MAY_LANMAN 0 | |
1642 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1643 | #endif /* weak passwords */ |
1644 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1645 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1646 | |
1647 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1648 | /* note that only one of the following can be set so the | |
1649 | result of setting MUST flags more than once will be to | |
1650 | require use of the stronger protocol */ | |
1651 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1652 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1653 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1654 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1655 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1656 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1657 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1658 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1659 | #else |
20d1752f | 1660 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1661 | #endif /* UPCALL */ |
0d3a01fa | 1662 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1663 | #define CIFSSEC_MUST_LANMAN 0 |
1664 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1665 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1666 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1667 | #else |
ac683924 | 1668 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1669 | #endif /* UPCALL */ |
3979877e SF |
1670 | #endif /* WEAK_PW_HASH */ |
1671 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1672 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1673 | |
896a8fc2 | 1674 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
ef571cad | 1675 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) |
ac683924 | 1676 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1677 | /* |
1678 | ***************************************************************** | |
1679 | * All constants go here | |
1680 | ***************************************************************** | |
1681 | */ | |
1682 | ||
1683 | #define UID_HASH (16) | |
1684 | ||
1685 | /* | |
1686 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1687 | * following to be declared. | |
1688 | */ | |
1689 | ||
1690 | /**************************************************************************** | |
1691 | * Locking notes. All updates to global variables and lists should be | |
1692 | * protected by spinlocks or semaphores. | |
1693 | * | |
1694 | * Spinlocks | |
1695 | * --------- | |
1696 | * GlobalMid_Lock protects: | |
1697 | * list operations on pending_mid_q and oplockQ | |
1698 | * updates to XID counters, multiplex id and SMB sequence numbers | |
3afca265 SF |
1699 | * tcp_ses_lock protects: |
1700 | * list operations on tcp and SMB session lists | |
1701 | * tcon->open_file_lock protects the list of open files hanging off the tcon | |
1702 | * cfile->file_info_lock protects counters and fields in cifs file struct | |
1da177e4 LT |
1703 | * f_owner.lock protects certain per file struct operations |
1704 | * mapping->page_lock protects certain per page operations | |
1705 | * | |
1706 | * Semaphores | |
1707 | * ---------- | |
1708 | * sesSem operations on smb session | |
1709 | * tconSem operations on tree connection | |
d38d8c74 | 1710 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1711 | * |
1712 | ****************************************************************************/ | |
1713 | ||
1714 | #ifdef DECLARE_GLOBALS_HERE | |
1715 | #define GLOBAL_EXTERN | |
1716 | #else | |
1717 | #define GLOBAL_EXTERN extern | |
1718 | #endif | |
1719 | ||
e7ddee90 JL |
1720 | /* |
1721 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1722 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1723 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1724 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1725 | * by iterating over cifs_tcp_ses_list |
1726 | */ | |
1727 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1728 | ||
f1987b44 JL |
1729 | /* |
1730 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1731 | * tcp session, and the list of tcon's per smb session. It also protects | |
1732 | * the reference counters for the server, smb session, and tcon. Finally, | |
1733 | * changes to the tcon->tidStatus should be done while holding this lock. | |
3afca265 SF |
1734 | * generally the locks should be taken in order tcp_ses_lock before |
1735 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1736 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1737 | */ |
3f9bcca7 | 1738 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1739 | |
0eff0e26 | 1740 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1741 | /* Outstanding dir notify requests */ |
1742 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1743 | /* DirNotify response queue */ | |
1744 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1745 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1746 | |
1da177e4 LT |
1747 | /* |
1748 | * Global transaction id (XID) information | |
1749 | */ | |
1750 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1751 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1752 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1753 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1754 | /* on midQ entries */ | |
1da177e4 LT |
1755 | /* |
1756 | * Global counters, updated atomically | |
1757 | */ | |
1758 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1759 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1760 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1761 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1762 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1763 | ||
aaa9bbe0 | 1764 | /* Various Debug counters */ |
4498eed5 SF |
1765 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1766 | #ifdef CONFIG_CIFS_STATS2 | |
1767 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1768 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
00778e22 | 1769 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 SF |
1770 | #endif |
1771 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1772 | GLOBAL_EXTERN atomic_t midCount; |
1773 | ||
1774 | /* Misc globals */ | |
f92a720e SF |
1775 | extern bool enable_oplocks; /* enable or disable oplocks */ |
1776 | extern bool lookupCacheEnabled; | |
1777 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 1778 | with more secure ntlmssp2 challenge/resp */ |
f92a720e SF |
1779 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1780 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1781 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1782 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1783 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
1784 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1785 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ | |
1da177e4 | 1786 | |
21fed0d5 | 1787 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1788 | GLOBAL_EXTERN struct rb_root uidtree; |
1789 | GLOBAL_EXTERN struct rb_root gidtree; | |
1790 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1791 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1792 | GLOBAL_EXTERN struct rb_root siduidtree; |
1793 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1794 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1795 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1796 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1797 | |
9b646972 | 1798 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1799 | |
3bc303c2 | 1800 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1801 | extern struct workqueue_struct *cifsiod_wq; |
3998e6b8 | 1802 | extern struct workqueue_struct *cifsoplockd_wq; |
3d22462a | 1803 | extern __u32 cifs_lock_secret; |
abd2e44d | 1804 | |
2dc7e1c0 PS |
1805 | extern mempool_t *cifs_mid_poolp; |
1806 | ||
23db65f5 JL |
1807 | /* Operations for different SMB versions */ |
1808 | #define SMB1_VERSION_STRING "1.0" | |
1809 | extern struct smb_version_operations smb1_operations; | |
1810 | extern struct smb_version_values smb1_values; | |
e4aa25e7 | 1811 | #define SMB20_VERSION_STRING "2.0" |
53ef1016 | 1812 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 1813 | extern struct smb_version_values smb20_values; |
1080ef75 SF |
1814 | #define SMB21_VERSION_STRING "2.1" |
1815 | extern struct smb_version_operations smb21_operations; | |
1816 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
1817 | #define SMBDEFAULT_VERSION_STRING "default" |
1818 | extern struct smb_version_values smbdefault_values; | |
1819 | #define SMB3ANY_VERSION_STRING "3" | |
1820 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 1821 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 1822 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 1823 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 1824 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 1825 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
1826 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
1827 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 1828 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
1829 | #define ALT_SMB311_VERSION_STRING "3.11" |
1830 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 1831 | extern struct smb_version_values smb311_values; |
abd2e44d | 1832 | #endif /* _CIFS_GLOB_H */ |