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929be906 | 1 | /* SPDX-License-Identifier: LGPL-2.1 */ |
1da177e4 | 2 | /* |
1da177e4 | 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 | 7 | * |
1da177e4 | 8 | */ |
abd2e44d SJ |
9 | #ifndef _CIFS_GLOB_H |
10 | #define _CIFS_GLOB_H | |
11 | ||
1da177e4 LT |
12 | #include <linux/in.h> |
13 | #include <linux/in6.h> | |
b438fcf1 | 14 | #include <linux/inet.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
f7f291e1 PA |
16 | #include <linux/scatterlist.h> |
17 | #include <linux/mm.h> | |
2dc7e1c0 | 18 | #include <linux/mempool.h> |
9b646972 | 19 | #include <linux/workqueue.h> |
49bd49f9 | 20 | #include <linux/utsname.h> |
cc391b69 | 21 | #include <linux/sched/mm.h> |
bc899ee1 | 22 | #include <linux/netfs.h> |
1da177e4 | 23 | #include "cifs_fs_sb.h" |
442aa310 | 24 | #include "cifsacl.h" |
d2b91521 | 25 | #include <crypto/internal/hash.h> |
8c3a2b4c | 26 | #include <uapi/linux/cifs/cifs_mount.h> |
0d35e382 | 27 | #include "../smbfs_common/smb2pdu.h" |
d60622eb | 28 | #include "smb2pdu.h" |
5970e15d | 29 | #include <linux/filelock.h> |
d2b91521 | 30 | |
8d8b26e5 | 31 | #define SMB_PATH_MAX 260 |
e2292430 AA |
32 | #define CIFS_PORT 445 |
33 | #define RFC1001_PORT 139 | |
34 | ||
1da177e4 LT |
35 | /* |
36 | * The sizes of various internal tables and strings | |
37 | */ | |
38 | #define MAX_UID_INFO 16 | |
39 | #define MAX_SES_INFO 2 | |
40 | #define MAX_TCON_INFO 4 | |
41 | ||
cdf1246f | 42 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
43 | |
44 | #define CIFS_MIN_RCV_POOL 4 | |
45 | ||
2c0c2a08 | 46 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
47 | /* |
48 | * default attribute cache timeout (jiffies) | |
49 | */ | |
50 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
51 | ||
52 | /* | |
53 | * max attribute cache timeout (jiffies) - 2^30 | |
54 | */ | |
55 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
56 | ||
ca567eb2 SF |
57 | /* |
58 | * Max persistent and resilient handle timeout (milliseconds). | |
59 | * Windows durable max was 960000 (16 minutes) | |
60 | */ | |
61 | #define SMB3_MAX_HANDLE_TIMEOUT 960000 | |
62 | ||
1da177e4 LT |
63 | /* |
64 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 65 | * on one socket concurrently. |
1da177e4 | 66 | */ |
10b9b98e | 67 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 68 | |
8ecaf67a JL |
69 | #define RFC1001_NAME_LEN 15 |
70 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
71 | ||
b327a717 AA |
72 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
73 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
74 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
75 | ||
adfeb3e0 SF |
76 | /* echo interval in seconds */ |
77 | #define SMB_ECHO_INTERVAL_MIN 1 | |
78 | #define SMB_ECHO_INTERVAL_MAX 600 | |
79 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 80 | |
6e1c1c08 SP |
81 | /* smb multichannel query server interfaces interval in seconds */ |
82 | #define SMB_INTERFACE_POLL_INTERVAL 600 | |
83 | ||
b24df3e3 RS |
84 | /* maximum number of PDUs in one compound */ |
85 | #define MAX_COMPOUND 5 | |
86 | ||
141891f4 SF |
87 | /* |
88 | * Default number of credits to keep available for SMB3. | |
89 | * This value is chosen somewhat arbitrarily. The Windows client | |
90 | * defaults to 128 credits, the Windows server allows clients up to | |
91 | * 512 credits (or 8K for later versions), and the NetApp server | |
92 | * does not limit clients at all. Choose a high enough default value | |
93 | * such that the client shouldn't limit performance, but allow mount | |
94 | * to override (until you approach 64K, where we limit credits to 65000 | |
95 | * to reduce possibility of seeing more server credit overflow bugs. | |
96 | */ | |
97 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
98 | ||
1da177e4 LT |
99 | #include "cifspdu.h" |
100 | ||
1da177e4 LT |
101 | #ifndef XATTR_DOS_ATTRIB |
102 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
103 | #endif | |
104 | ||
49bd49f9 SP |
105 | #define CIFS_MAX_WORKSTATION_LEN (__NEW_UTS_LEN + 1) /* reasonable max for client */ |
106 | ||
6916881f PA |
107 | #define CIFS_DFS_ROOT_SES(ses) ((ses)->dfs_root_ses ?: (ses)) |
108 | ||
1da177e4 LT |
109 | /* |
110 | * CIFS vfs client Status information (based on what we know.) | |
111 | */ | |
112 | ||
dd3cd870 | 113 | /* associated with each connection */ |
1da177e4 LT |
114 | enum statusEnum { |
115 | CifsNew = 0, | |
116 | CifsGood, | |
117 | CifsExiting, | |
fd88ce93 | 118 | CifsNeedReconnect, |
73f9bfbe SP |
119 | CifsNeedNegotiate, |
120 | CifsInNegotiate, | |
dd3cd870 SP |
121 | }; |
122 | ||
123 | /* associated with each smb session */ | |
124 | enum ses_status_enum { | |
125 | SES_NEW = 0, | |
126 | SES_GOOD, | |
127 | SES_EXITING, | |
128 | SES_NEED_RECON, | |
129 | SES_IN_SETUP | |
fdf59eb5 SF |
130 | }; |
131 | ||
132 | /* associated with each tree connection to the server */ | |
133 | enum tid_status_enum { | |
134 | TID_NEW = 0, | |
135 | TID_GOOD, | |
136 | TID_EXITING, | |
137 | TID_NEED_RECON, | |
138 | TID_NEED_TCON, | |
139 | TID_IN_TCON, | |
140 | TID_NEED_FILES_INVALIDATE, /* currently unused */ | |
141 | TID_IN_FILES_INVALIDATE | |
1da177e4 LT |
142 | }; |
143 | ||
144 | enum securityEnum { | |
515d82ff | 145 | Unspecified = 0, /* not specified */ |
1da177e4 | 146 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 147 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 148 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
149 | }; |
150 | ||
5f98ca9a | 151 | struct session_key { |
b609f06a | 152 | unsigned int len; |
21e73393 | 153 | char *response; |
b609f06a SF |
154 | }; |
155 | ||
f7c5445a | 156 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 | 157 | struct cifs_secmech { |
1f3d5477 EM |
158 | struct shash_desc *hmacmd5; /* hmacmd5 hash function, for NTLMv2/CR1 hashes */ |
159 | struct shash_desc *md5; /* md5 hash function, for CIFS/SMB1 signatures */ | |
160 | struct shash_desc *hmacsha256; /* hmac-sha256 hash function, for SMB2 signatures */ | |
161 | struct shash_desc *sha512; /* sha512 hash function, for SMB3.1.1 preauth hash */ | |
162 | struct shash_desc *aes_cmac; /* block-cipher based MAC function, for SMB3 signatures */ | |
163 | ||
164 | struct crypto_aead *enc; /* smb3 encryption AEAD TFM (AES-CCM and AES-GCM) */ | |
165 | struct crypto_aead *dec; /* smb3 decryption AEAD TFM (AES-CCM and AES-GCM) */ | |
d2b91521 SP |
166 | }; |
167 | ||
d3686d54 | 168 | /* per smb session structure/fields */ |
d2b91521 | 169 | struct ntlmssp_auth { |
5c234aa5 | 170 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
171 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
172 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
173 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 174 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
175 | }; |
176 | ||
442aa310 SF |
177 | struct cifs_cred { |
178 | int uid; | |
179 | int gid; | |
180 | int mode; | |
181 | int cecount; | |
182 | struct cifs_sid osid; | |
183 | struct cifs_sid gsid; | |
184 | struct cifs_ntace *ntaces; | |
185 | struct cifs_ace *aces; | |
186 | }; | |
187 | ||
76894f3e PA |
188 | struct cifs_open_info_data { |
189 | char *symlink_target; | |
190 | union { | |
191 | struct smb2_file_all_info fi; | |
192 | struct smb311_posix_qinfo posix_fi; | |
193 | }; | |
194 | }; | |
195 | ||
196 | static inline void cifs_free_open_info(struct cifs_open_info_data *data) | |
197 | { | |
198 | kfree(data->symlink_target); | |
199 | } | |
200 | ||
1da177e4 LT |
201 | /* |
202 | ***************************************************************** | |
203 | * Except the CIFS PDUs themselves all the | |
204 | * globally interesting structs should go here | |
205 | ***************************************************************** | |
206 | */ | |
207 | ||
bf5ea0e2 JL |
208 | /* |
209 | * A smb_rqst represents a complete request to be issued to a server. It's | |
210 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
211 | * to start at the beginning of the first page. | |
212 | */ | |
213 | struct smb_rqst { | |
214 | struct kvec *rq_iov; /* array of kvecs */ | |
215 | unsigned int rq_nvec; /* number of kvecs in array */ | |
d08089f6 DH |
216 | size_t rq_iter_size; /* Amount of data in ->rq_iter */ |
217 | struct iov_iter rq_iter; /* Data iterator */ | |
218 | struct xarray rq_buffer; /* Page buffer for encryption */ | |
bf5ea0e2 JL |
219 | }; |
220 | ||
121b046a JL |
221 | struct mid_q_entry; |
222 | struct TCP_Server_Info; | |
55157dfb | 223 | struct cifsFileInfo; |
082d0642 | 224 | struct cifs_ses; |
2e6e02ab | 225 | struct cifs_tcon; |
b669f33c | 226 | struct dfs_info3_param; |
1208ef1f | 227 | struct cifs_fattr; |
3fa1c6d1 | 228 | struct smb3_fs_context; |
fb1214e4 | 229 | struct cifs_fid; |
fc9c5966 | 230 | struct cifs_readdata; |
c9de5c80 | 231 | struct cifs_writedata; |
f9c6e234 | 232 | struct cifs_io_parms; |
92fc65a7 | 233 | struct cifs_search_info; |
95a3f2f3 | 234 | struct cifsInodeInfo; |
226730b4 | 235 | struct cifs_open_parms; |
335b7b62 | 236 | struct cifs_credits; |
121b046a | 237 | |
23db65f5 | 238 | struct smb_version_operations { |
fb2036d8 | 239 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 240 | struct mid_q_entry *); |
55157dfb | 241 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 242 | /* setup request: allocate mid, sign message */ |
fec344e3 | 243 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
f780bd3f AA |
244 | struct TCP_Server_Info *, |
245 | struct smb_rqst *); | |
45740847 | 246 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
247 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
248 | struct smb_rqst *); | |
082d0642 PS |
249 | /* check response: verify signature, map error */ |
250 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
251 | bool); | |
335b7b62 PS |
252 | void (*add_credits)(struct TCP_Server_Info *server, |
253 | const struct cifs_credits *credits, | |
254 | const int optype); | |
45275789 | 255 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
256 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
257 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 258 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
c781af7e PS |
259 | void (*revert_current_mid)(struct TCP_Server_Info *server, |
260 | const unsigned int val); | |
eb378711 PS |
261 | /* data offset from read response message */ |
262 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
263 | /* |
264 | * Data length from read response message | |
265 | * When in_remaining is true, the returned data length is in | |
266 | * message field DataRemaining for out-of-band data read (e.g through | |
267 | * Memory Registration RDMA write in SMBD). | |
268 | * Otherwise, the returned data length is in message field DataLength. | |
269 | */ | |
270 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
271 | /* map smb to linux error */ |
272 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
273 | /* find mid corresponding to the response message */ |
274 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 275 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
276 | void (*clear_stats)(struct cifs_tcon *); |
277 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 278 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 279 | /* verify the message */ |
373512ec | 280 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 281 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
04ad69c3 | 282 | int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *); |
9bd45408 PS |
283 | void (*downgrade_oplock)(struct TCP_Server_Info *server, |
284 | struct cifsInodeInfo *cinode, __u32 oplock, | |
285 | unsigned int epoch, bool *purge_cache); | |
316cf94a PS |
286 | /* process transaction2 response */ |
287 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
288 | char *, int); | |
286170aa PS |
289 | /* check if we need to negotiate */ |
290 | bool (*need_neg)(struct TCP_Server_Info *); | |
291 | /* negotiate to the server */ | |
f486ef8e SP |
292 | int (*negotiate)(const unsigned int xid, |
293 | struct cifs_ses *ses, | |
294 | struct TCP_Server_Info *server); | |
24985c53 | 295 | /* set negotiated write size */ |
3fa1c6d1 | 296 | unsigned int (*negotiate_wsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
24985c53 | 297 | /* set negotiated read size */ |
3fa1c6d1 | 298 | unsigned int (*negotiate_rsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
58c45c58 PS |
299 | /* setup smb sessionn */ |
300 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
f486ef8e | 301 | struct TCP_Server_Info *server, |
58c45c58 PS |
302 | const struct nls_table *); |
303 | /* close smb session */ | |
304 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
305 | /* connect to a server share */ |
306 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
307 | struct cifs_tcon *, const struct nls_table *); | |
308 | /* close tree connecion */ | |
309 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
310 | /* get DFS referrals */ |
311 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
312 | const char *, struct dfs_info3_param **, | |
313 | unsigned int *, const struct nls_table *, int); | |
af4281dc | 314 | /* informational QFS call */ |
0f060936 AG |
315 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *, |
316 | struct cifs_sb_info *); | |
68889f26 PS |
317 | /* check if a path is accessible or not */ |
318 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
319 | struct cifs_sb_info *, const char *); | |
1208ef1f | 320 | /* query path data from the server */ |
76894f3e PA |
321 | int (*query_path_info)(const unsigned int xid, struct cifs_tcon *tcon, |
322 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
323 | struct cifs_open_info_data *data, bool *adjust_tz, bool *reparse); | |
4ad65044 | 324 | /* query file data from the server */ |
76894f3e PA |
325 | int (*query_file_info)(const unsigned int xid, struct cifs_tcon *tcon, |
326 | struct cifsFileInfo *cfile, struct cifs_open_info_data *data); | |
2e4564b3 SF |
327 | /* query reparse tag from srv to determine which type of special file */ |
328 | int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon, | |
329 | struct cifs_sb_info *cifs_sb, const char *path, | |
330 | __u32 *reparse_tag); | |
1208ef1f | 331 | /* get server index number */ |
76894f3e PA |
332 | int (*get_srv_inum)(const unsigned int xid, struct cifs_tcon *tcon, |
333 | struct cifs_sb_info *cifs_sb, const char *full_path, u64 *uniqueid, | |
334 | struct cifs_open_info_data *data); | |
d1433418 PS |
335 | /* set size by path */ |
336 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
337 | const char *, __u64, struct cifs_sb_info *, bool); | |
338 | /* set size by file handle */ | |
339 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
340 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
341 | /* set attributes */ |
342 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
343 | const unsigned int); | |
64a5cfa6 SF |
344 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
345 | struct cifsFileInfo *); | |
f6d76178 PS |
346 | /* check if we can send an echo or nor */ |
347 | bool (*can_echo)(struct TCP_Server_Info *); | |
348 | /* send echo request */ | |
349 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 350 | /* create directory */ |
bea851b8 SF |
351 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
352 | umode_t mode, struct cifs_tcon *tcon, | |
353 | const char *full_path, | |
354 | struct cifs_sb_info *cifs_sb); | |
c3ca78e2 SF |
355 | int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode, |
356 | struct cifs_tcon *tcon, const char *name, | |
357 | struct cifs_sb_info *sb); | |
f436720e PS |
358 | /* set info on created directory */ |
359 | void (*mkdir_setinfo)(struct inode *, const char *, | |
360 | struct cifs_sb_info *, struct cifs_tcon *, | |
361 | const unsigned int); | |
f958ca5d PS |
362 | /* remove directory */ |
363 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
364 | struct cifs_sb_info *); | |
ed6875e0 PS |
365 | /* unlink file */ |
366 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
367 | struct cifs_sb_info *); | |
368 | /* open, rename and delete file */ | |
369 | int (*rename_pending_delete)(const char *, struct dentry *, | |
370 | const unsigned int); | |
8ceb9843 PS |
371 | /* send rename request */ |
372 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
373 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
374 | /* send create hardlink request */ |
375 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
376 | const char *, const char *, | |
377 | struct cifs_sb_info *); | |
b42bf888 PS |
378 | /* query symlink target */ |
379 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
ebaf546a RS |
380 | struct cifs_sb_info *, const char *, |
381 | char **, bool); | |
fb1214e4 | 382 | /* open a file for non-posix mounts */ |
76894f3e PA |
383 | int (*open)(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, |
384 | void *buf); | |
fb1214e4 PS |
385 | /* set fid protocol-specific info */ |
386 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 387 | /* close a file */ |
760ad0ca PS |
388 | void (*close)(const unsigned int, struct cifs_tcon *, |
389 | struct cifs_fid *); | |
43f8a6a7 SF |
390 | /* close a file, returning file attributes and timestamps */ |
391 | void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon, | |
392 | struct cifsFileInfo *pfile_info); | |
1d8c4c00 PS |
393 | /* send a flush request to the server */ |
394 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
395 | /* async read from the server */ |
396 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 397 | /* async write to the server */ |
4a5c80d7 SF |
398 | int (*async_writev)(struct cifs_writedata *, |
399 | void (*release)(struct kref *)); | |
f9c6e234 | 400 | /* sync read from the server */ |
db8b631d | 401 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
402 | struct cifs_io_parms *, unsigned int *, char **, |
403 | int *); | |
ba9ad725 | 404 | /* sync write to the server */ |
db8b631d | 405 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
406 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
407 | unsigned long); | |
92fc65a7 PS |
408 | /* open dir, start readdir */ |
409 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
410 | const char *, struct cifs_sb_info *, | |
411 | struct cifs_fid *, __u16, | |
412 | struct cifs_search_info *); | |
413 | /* continue readdir */ | |
414 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
415 | struct cifs_fid *, | |
416 | __u16, struct cifs_search_info *srch_inf); | |
417 | /* close dir */ | |
418 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
419 | struct cifs_fid *); | |
420 | /* calculate a size of SMB message */ | |
68ed1449 | 421 | unsigned int (*calc_smb_size)(void *buf); |
66265f13 PS |
422 | /* check for STATUS_PENDING and process the response if yes */ |
423 | bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); | |
511c54a2 PS |
424 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
425 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
426 | /* send oplock break response */ |
427 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
428 | struct cifsInodeInfo *); | |
76ec5e33 PS |
429 | /* query remote filesystem */ |
430 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
0f060936 | 431 | struct cifs_sb_info *, struct kstatfs *); |
d39a4f71 PS |
432 | /* send mandatory brlock to the server */ |
433 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
434 | __u64, __u32, int, int, bool); | |
435 | /* unlock range of mandatory locks */ | |
436 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
437 | const unsigned int); | |
438 | /* push brlocks from the cache to the server */ | |
439 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 440 | /* get lease key of the inode */ |
a41a28bd | 441 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 442 | /* set lease key of the inode */ |
a41a28bd | 443 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 444 | /* generate new lease key */ |
a41a28bd | 445 | void (*new_lease_key)(struct cifs_fid *); |
f486ef8e SP |
446 | int (*generate_signingkey)(struct cifs_ses *ses, |
447 | struct TCP_Server_Info *server); | |
eda1c54f LL |
448 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *, |
449 | bool allocate_crypto); | |
b3152e2c SF |
450 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
451 | struct cifsFileInfo *src_file); | |
834170c8 SF |
452 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
453 | struct cifsFileInfo *src_file, void __user *); | |
d26c2ddd | 454 | int (*notify)(const unsigned int xid, struct file *pfile, |
e3e94634 | 455 | void __user *pbuf, bool return_changes); |
b5be1a1c SP |
456 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
457 | struct cifs_sb_info *, const unsigned char *, | |
458 | char *, unsigned int *); | |
cbb0aba6 SP |
459 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
460 | struct cifs_sb_info *, const unsigned char *, | |
461 | char *, unsigned int *); | |
53ef1016 PS |
462 | /* if we can do cache read operations */ |
463 | bool (*is_read_op)(__u32); | |
464 | /* set oplock level for the inode */ | |
42873b0a PS |
465 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
466 | bool *); | |
a41a28bd | 467 | /* create lease context buffer for CREATE request */ |
729c0c9d | 468 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 469 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 470 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 471 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 472 | struct cifsFileInfo *src_file, |
620d8745 SP |
473 | struct cifsFileInfo *target_file, |
474 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
475 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
476 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
477 | u64 dest_off); | |
ff1c038a | 478 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
479 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
480 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 481 | size_t, struct cifs_sb_info *); |
666753c3 SF |
482 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
483 | const char *, const void *, const __u16, | |
5517554e | 484 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 | 485 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
3970acf7 | 486 | const char *, u32 *, u32); |
42eacf9e | 487 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
3970acf7 | 488 | const struct cifs_fid *, u32 *, u32); |
83e3bc23 SF |
489 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
490 | int); | |
7f6c5008 PS |
491 | /* writepages retry size */ |
492 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
493 | /* get mtu credits */ |
494 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
335b7b62 | 495 | unsigned int *, struct cifs_credits *); |
9a1c67e8 PS |
496 | /* adjust previously taken mtu credits to request size */ |
497 | int (*adjust_credits)(struct TCP_Server_Info *server, | |
498 | struct cifs_credits *credits, | |
499 | const unsigned int payload_size); | |
52755808 PS |
500 | /* check if we need to issue closedir */ |
501 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
502 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
503 | loff_t); | |
7fb8986e | 504 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
505 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
506 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
507 | int (*is_transform_hdr)(void *buf); |
508 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 509 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
510 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
511 | enum securityEnum); | |
8ce79ec3 | 512 | int (*next_header)(char *); |
f5b05d62 RS |
513 | /* ioctl passthrough for query_info */ |
514 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 | 515 | struct cifs_tcon *tcon, |
0f060936 | 516 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 517 | __le16 *path, int is_dir, |
f5b05d62 | 518 | unsigned long p); |
c847dccf AA |
519 | /* make unix special files (block, char, fifo, socket) */ |
520 | int (*make_node)(unsigned int xid, | |
521 | struct inode *inode, | |
522 | struct dentry *dentry, | |
523 | struct cifs_tcon *tcon, | |
55869139 | 524 | const char *full_path, |
c847dccf AA |
525 | umode_t mode, |
526 | dev_t device_number); | |
2f3ebaba RS |
527 | /* version specific fiemap implementation */ |
528 | int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *, | |
529 | struct fiemap_extent_info *, u64, u64); | |
dece44e3 RS |
530 | /* version specific llseek implementation */ |
531 | loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int); | |
8e670f77 RS |
532 | /* Check for STATUS_IO_TIMEOUT */ |
533 | bool (*is_status_io_timeout)(char *buf); | |
9e550b08 RS |
534 | /* Check for STATUS_NETWORK_NAME_DELETED */ |
535 | void (*is_network_name_deleted)(char *buf, struct TCP_Server_Info *srv); | |
23db65f5 JL |
536 | }; |
537 | ||
538 | struct smb_version_values { | |
539 | char *version_string; | |
e4aa25e7 SF |
540 | __u16 protocol_id; |
541 | __u32 req_capabilities; | |
106dc538 PS |
542 | __u32 large_lock_type; |
543 | __u32 exclusive_lock_type; | |
544 | __u32 shared_lock_type; | |
545 | __u32 unlock_lock_type; | |
93012bf9 | 546 | size_t header_preamble_size; |
1887f601 PS |
547 | size_t header_size; |
548 | size_t max_header_size; | |
eb378711 | 549 | size_t read_rsp_size; |
2dc7e1c0 | 550 | __le16 lock_cmd; |
29e20f9c PS |
551 | unsigned int cap_unix; |
552 | unsigned int cap_nt_find; | |
553 | unsigned int cap_large_files; | |
50285882 JL |
554 | __u16 signing_enabled; |
555 | __u16 signing_required; | |
a41a28bd | 556 | size_t create_lease_size; |
23db65f5 JL |
557 | }; |
558 | ||
1887f601 PS |
559 | #define HEADER_SIZE(server) (server->vals->header_size) |
560 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
9789de8b | 561 | #define HEADER_PREAMBLE_SIZE(server) (server->vals->header_preamble_size) |
b6b3624d | 562 | #define MID_HEADER_SIZE(server) (HEADER_SIZE(server) - 1 - HEADER_PREAMBLE_SIZE(server)) |
1887f601 | 563 | |
d070f9dd AA |
564 | /** |
565 | * CIFS superblock mount flags (mnt_cifs_flags) to consider when | |
566 | * trying to reuse existing superblock for a new mount | |
567 | */ | |
25c7f41e PS |
568 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
569 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
570 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 571 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
572 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
573 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
574 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
575 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
576 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 | 577 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
d070f9dd | 578 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ |
6552d6a0 | 579 | CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ |
83bbfa70 | 580 | CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ |
41e033fe | 581 | CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) |
25c7f41e | 582 | |
d070f9dd AA |
583 | /** |
584 | * Generic VFS superblock mount flags (s_flags) to consider when | |
585 | * trying to reuse existing superblock for a new mount | |
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; | |
3fa1c6d1 | 592 | struct smb3_fs_context *ctx; |
25c7f41e PS |
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; | |
d7d7a66a | 611 | spinlock_t srv_lock; /* protect anything here that is not protected */ |
6d82c27a | 612 | __u64 conn_id; /* connection identifier (useful for debugging) */ |
e7ddee90 | 613 | int srv_count; /* reference counter */ |
a10faeb2 | 614 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 615 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
616 | struct smb_version_operations *ops; |
617 | struct smb_version_values *vals; | |
080dc5e5 | 618 | /* updates to tcpStatus protected by cifs_tcp_ses_lock */ |
c3dccf48 | 619 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 620 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 621 | struct socket *ssocket; |
a9f1b85e | 622 | struct sockaddr_storage dstaddr; |
3eb9a889 | 623 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
624 | #ifdef CONFIG_NET_NS |
625 | struct net *net; | |
626 | #endif | |
d38d8c74 | 627 | wait_queue_head_t response_q; |
1da177e4 | 628 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
d7d7a66a | 629 | spinlock_t mid_lock; /* protect mid queue and it's entries */ |
1da177e4 | 630 | struct list_head pending_mid_q; |
edf1ae40 SF |
631 | bool noblocksnd; /* use blocking sendmsg */ |
632 | bool noautotune; /* do not autotune send buf sizes */ | |
c9f1c19c | 633 | bool nosharesock; |
6a5fa236 | 634 | bool tcp_nodelay; |
141891f4 SF |
635 | unsigned int credits; /* send no more requests at once */ |
636 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 637 | unsigned int in_flight; /* number of requests on the wire to server */ |
1b63f184 | 638 | unsigned int max_in_flight; /* max number of requests that were on wire */ |
2d86dbc9 | 639 | spinlock_t req_lock; /* protect the two values above */ |
cc391b69 VW |
640 | struct mutex _srv_mutex; |
641 | unsigned int nofs_flag; | |
1da177e4 LT |
642 | struct task_struct *tsk; |
643 | char server_GUID[16]; | |
286170aa | 644 | __u16 sec_mode; |
38d77c50 | 645 | bool sign; /* is signing enabled on this connection? */ |
4f5c10f1 | 646 | bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */ |
c3dccf48 | 647 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
648 | int echo_credits; /* echo reserved slots */ |
649 | int oplock_credits; /* oplock break reserved slots */ | |
650 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 651 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 652 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 653 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
654 | unsigned int maxReq; /* Clients should submit no more */ |
655 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 656 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
657 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
658 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
659 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
660 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 661 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
662 | /* message size the server can send or receive for */ |
663 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 664 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 665 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
0fa757b5 | 666 | __u64 CurrentMid; /* multiplex id - rotating counter, protected by GlobalMid_Lock */ |
d3ba50b1 | 667 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 668 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 669 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 670 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 671 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 672 | struct session_key session_key; |
3a5ff61c | 673 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 674 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
675 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ |
676 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
677 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 678 | /* extended security flavors that server supports */ |
c3dccf48 JL |
679 | bool sec_ntlmssp; /* supports NTLMSSP */ |
680 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
681 | bool sec_kerberos; /* supports plain Kerberos */ |
682 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 683 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
684 | /* use SMBD connection instead of socket */ |
685 | bool rdma; | |
686 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
687 | struct smbd_connection *smbd_conn; | |
c74093b6 | 688 | struct delayed_work echo; /* echo ping workqueue job */ |
2a37ef94 JL |
689 | char *smallbuf; /* pointer to current "small" buffer */ |
690 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
691 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
692 | unsigned int pdu_size; | |
2a37ef94 | 693 | unsigned int total_read; /* total amount of data read in this pass */ |
1ae9a5a5 SF |
694 | atomic_t in_send; /* requests trying to send */ |
695 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
c3dccf48 | 696 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 | 697 | atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */ |
468d6779 | 698 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
433b8dd7 SF |
699 | __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */ |
700 | __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
701 | __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
468d6779 | 702 | #endif /* STATS2 */ |
ec2e4523 PS |
703 | unsigned int max_read; |
704 | unsigned int max_write; | |
563317ec | 705 | unsigned int min_offload; |
26ea888f | 706 | __le16 compress_algorithm; |
53d31a3f | 707 | __u16 signing_algorithm; |
5100d8a3 | 708 | __le16 cipher_type; |
8bd68c6e AA |
709 | /* save initital negprot hash */ |
710 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
53d31a3f | 711 | bool signing_negotiated; /* true if valid signing context rcvd from server */ |
fcef0db6 | 712 | bool posix_ext_supported; |
53e0e11e PS |
713 | struct delayed_work reconnect; /* reconnect workqueue job */ |
714 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 715 | unsigned long echo_interval; |
93d5cb51 PA |
716 | |
717 | /* | |
718 | * Number of targets available for reconnect. The more targets | |
719 | * the more tasks have to wait to let the demultiplex thread | |
720 | * reconnect. | |
721 | */ | |
722 | int nr_targets; | |
8eecd1c2 | 723 | bool noblockcnt; /* use non-blocking connect() */ |
0f2b305a SP |
724 | |
725 | /* | |
726 | * If this is a session channel, | |
727 | * primary_server holds the ref-counted | |
728 | * pointer to primary channel connection for the session. | |
729 | */ | |
730 | #define CIFS_SERVER_IS_CHAN(server) (!!(server)->primary_server) | |
731 | struct TCP_Server_Info *primary_server; | |
732 | ||
121d947d SC |
733 | #ifdef CONFIG_CIFS_SWN_UPCALL |
734 | bool use_swn_dstaddr; | |
735 | struct sockaddr_storage swn_dstaddr; | |
736 | #endif | |
c88f7dcd PA |
737 | struct mutex refpath_lock; /* protects leaf_fullpath */ |
738 | /* | |
739 | * Canonical DFS full paths that were used to chase referrals in mount and reconnect. | |
740 | * | |
741 | * origin_fullpath: first or original referral path | |
742 | * leaf_fullpath: last referral path (might be changed due to nested links in reconnect) | |
743 | * | |
744 | * current_fullpath: pointer to either origin_fullpath or leaf_fullpath | |
745 | * NOTE: cannot be accessed outside cifs_reconnect() and smb2_reconnect() | |
746 | * | |
747 | * format: \\HOST\SHARE\[OPTIONAL PATH] | |
748 | */ | |
749 | char *origin_fullpath, *leaf_fullpath, *current_fullpath; | |
1da177e4 LT |
750 | }; |
751 | ||
d291e703 ZX |
752 | static inline bool is_smb1(struct TCP_Server_Info *server) |
753 | { | |
754 | return HEADER_PREAMBLE_SIZE(server) != 0; | |
755 | } | |
756 | ||
cc391b69 VW |
757 | static inline void cifs_server_lock(struct TCP_Server_Info *server) |
758 | { | |
759 | unsigned int nofs_flag = memalloc_nofs_save(); | |
760 | ||
761 | mutex_lock(&server->_srv_mutex); | |
762 | server->nofs_flag = nofs_flag; | |
763 | } | |
764 | ||
765 | static inline void cifs_server_unlock(struct TCP_Server_Info *server) | |
766 | { | |
767 | unsigned int nofs_flag = server->nofs_flag; | |
768 | ||
769 | mutex_unlock(&server->_srv_mutex); | |
770 | memalloc_nofs_restore(nofs_flag); | |
771 | } | |
772 | ||
335b7b62 PS |
773 | struct cifs_credits { |
774 | unsigned int value; | |
775 | unsigned int instance; | |
776 | }; | |
777 | ||
fc40f9cf PS |
778 | static inline unsigned int |
779 | in_flight(struct TCP_Server_Info *server) | |
780 | { | |
781 | unsigned int num; | |
c19204cb | 782 | |
fc40f9cf PS |
783 | spin_lock(&server->req_lock); |
784 | num = server->in_flight; | |
785 | spin_unlock(&server->req_lock); | |
786 | return num; | |
787 | } | |
788 | ||
2d86dbc9 | 789 | static inline bool |
b227d215 | 790 | has_credits(struct TCP_Server_Info *server, int *credits, int num_credits) |
fc40f9cf | 791 | { |
2d86dbc9 | 792 | int num; |
c19204cb | 793 | |
fc40f9cf | 794 | spin_lock(&server->req_lock); |
bc205ed1 | 795 | num = *credits; |
fc40f9cf | 796 | spin_unlock(&server->req_lock); |
b227d215 | 797 | return num >= num_credits; |
fc40f9cf PS |
798 | } |
799 | ||
45275789 | 800 | static inline void |
34f4deb7 | 801 | add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, |
a891f0f8 | 802 | const int optype) |
45275789 | 803 | { |
34f4deb7 | 804 | server->ops->add_credits(server, credits, optype); |
45275789 PS |
805 | } |
806 | ||
cb7e9eab | 807 | static inline void |
335b7b62 PS |
808 | add_credits_and_wake_if(struct TCP_Server_Info *server, |
809 | const struct cifs_credits *credits, const int optype) | |
cb7e9eab | 810 | { |
335b7b62 PS |
811 | if (credits->value) { |
812 | server->ops->add_credits(server, credits, optype); | |
cb7e9eab PS |
813 | wake_up(&server->request_q); |
814 | } | |
815 | } | |
816 | ||
45275789 PS |
817 | static inline void |
818 | set_credits(struct TCP_Server_Info *server, const int val) | |
819 | { | |
820 | server->ops->set_credits(server, val); | |
821 | } | |
822 | ||
9a1c67e8 PS |
823 | static inline int |
824 | adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, | |
825 | const unsigned int payload_size) | |
826 | { | |
827 | return server->ops->adjust_credits ? | |
828 | server->ops->adjust_credits(server, credits, payload_size) : 0; | |
829 | } | |
830 | ||
9235d098 | 831 | static inline __le64 |
3d378d3f | 832 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 833 | { |
9235d098 | 834 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
835 | } |
836 | ||
3d378d3f TG |
837 | static inline __le16 |
838 | get_next_mid(struct TCP_Server_Info *server) | |
839 | { | |
9235d098 | 840 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
841 | /* |
842 | * The value in the SMB header should be little endian for easy | |
843 | * on-the-wire decoding. | |
844 | */ | |
845 | return cpu_to_le16(mid); | |
846 | } | |
847 | ||
c781af7e PS |
848 | static inline void |
849 | revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
850 | { | |
851 | if (server->ops->revert_current_mid) | |
852 | server->ops->revert_current_mid(server, val); | |
853 | } | |
854 | ||
855 | static inline void | |
856 | revert_current_mid_from_hdr(struct TCP_Server_Info *server, | |
0d35e382 | 857 | const struct smb2_hdr *shdr) |
c781af7e PS |
858 | { |
859 | unsigned int num = le16_to_cpu(shdr->CreditCharge); | |
860 | ||
861 | return revert_current_mid(server, num > 0 ? num : 1); | |
862 | } | |
863 | ||
3d378d3f TG |
864 | static inline __u16 |
865 | get_mid(const struct smb_hdr *smb) | |
866 | { | |
867 | return le16_to_cpu(smb->Mid); | |
868 | } | |
869 | ||
870 | static inline bool | |
871 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
872 | { | |
873 | return mid == le16_to_cpu(smb->Mid); | |
874 | } | |
875 | ||
24985c53 PS |
876 | /* |
877 | * When the server supports very large reads and writes via POSIX extensions, | |
878 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
879 | * including the RFC1001 length. | |
880 | * | |
881 | * Note that this might make for "interesting" allocation problems during | |
882 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 883 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
884 | * |
885 | * For reads, there is a similar problem as we need to allocate an array | |
886 | * of kvecs to handle the receive, though that should only need to be done | |
887 | * once. | |
888 | */ | |
889 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
890 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
891 | ||
892 | /* | |
893 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
894 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
895 | * write up to the maximum size described by RFC1002. | |
896 | */ | |
897 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
898 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
899 | ||
24985c53 PS |
900 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) |
901 | ||
902 | /* | |
903 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
904 | * those values when posix extensions aren't in force. In actuality here, we | |
905 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
906 | * to be ok with the extra byte even though Windows doesn't send writes that | |
907 | * are that large. | |
908 | * | |
909 | * Citation: | |
910 | * | |
cba22b1c | 911 | * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx |
24985c53 PS |
912 | */ |
913 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
914 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
915 | ||
f1d0c998 RL |
916 | /* |
917 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
918 | * when CONFIG_NET_NS isn't set. | |
919 | */ | |
920 | ||
921 | #ifdef CONFIG_NET_NS | |
922 | ||
923 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
924 | { | |
925 | return srv->net; | |
926 | } | |
927 | ||
928 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
929 | { | |
930 | srv->net = net; | |
931 | } | |
932 | ||
933 | #else | |
934 | ||
935 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
936 | { | |
937 | return &init_net; | |
938 | } | |
939 | ||
940 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
941 | { | |
942 | } | |
943 | ||
944 | #endif | |
945 | ||
b6f0dd5d | 946 | struct cifs_server_iface { |
aa45dadd SP |
947 | struct list_head iface_head; |
948 | struct kref refcount; | |
b6f0dd5d AA |
949 | size_t speed; |
950 | unsigned int rdma_capable : 1; | |
951 | unsigned int rss_capable : 1; | |
aa45dadd | 952 | unsigned int is_active : 1; /* unset if non existent */ |
b6f0dd5d AA |
953 | struct sockaddr_storage sockaddr; |
954 | }; | |
955 | ||
aa45dadd SP |
956 | /* release iface when last ref is dropped */ |
957 | static inline void | |
958 | release_iface(struct kref *ref) | |
959 | { | |
960 | struct cifs_server_iface *iface = container_of(ref, | |
961 | struct cifs_server_iface, | |
962 | refcount); | |
963 | list_del_init(&iface->iface_head); | |
964 | kfree(iface); | |
965 | } | |
966 | ||
967 | /* | |
968 | * compare two interfaces a and b | |
969 | * return 0 if everything matches. | |
970 | * return 1 if a has higher link speed, or rdma capable, or rss capable | |
971 | * return -1 otherwise. | |
972 | */ | |
973 | static inline int | |
974 | iface_cmp(struct cifs_server_iface *a, struct cifs_server_iface *b) | |
975 | { | |
976 | int cmp_ret = 0; | |
977 | ||
978 | WARN_ON(!a || !b); | |
979 | if (a->speed == b->speed) { | |
980 | if (a->rdma_capable == b->rdma_capable) { | |
981 | if (a->rss_capable == b->rss_capable) { | |
982 | cmp_ret = memcmp(&a->sockaddr, &b->sockaddr, | |
983 | sizeof(a->sockaddr)); | |
984 | if (!cmp_ret) | |
985 | return 0; | |
986 | else if (cmp_ret > 0) | |
987 | return 1; | |
988 | else | |
989 | return -1; | |
990 | } else if (a->rss_capable > b->rss_capable) | |
991 | return 1; | |
992 | else | |
993 | return -1; | |
994 | } else if (a->rdma_capable > b->rdma_capable) | |
995 | return 1; | |
996 | else | |
997 | return -1; | |
998 | } else if (a->speed > b->speed) | |
999 | return 1; | |
1000 | else | |
1001 | return -1; | |
1002 | } | |
1003 | ||
bcc88801 | 1004 | struct cifs_chan { |
5752bf64 | 1005 | unsigned int in_reconnect : 1; /* if session setup in progress for this channel */ |
bcc88801 | 1006 | struct TCP_Server_Info *server; |
aa45dadd | 1007 | struct cifs_server_iface *iface; /* interface in use */ |
bcc88801 AA |
1008 | __u8 signkey[SMB3_SIGN_KEY_SIZE]; |
1009 | }; | |
1010 | ||
1da177e4 LT |
1011 | /* |
1012 | * Session structure. One of these for each uid session with a particular host | |
1013 | */ | |
96daf2b0 | 1014 | struct cifs_ses { |
14fbf50d | 1015 | struct list_head smb_ses_list; |
3663c904 | 1016 | struct list_head rlist; /* reconnect list */ |
3b795210 | 1017 | struct list_head tcon_list; |
b327a717 | 1018 | struct cifs_tcon *tcon_ipc; |
d7d7a66a | 1019 | spinlock_t ses_lock; /* protect anything here that is not protected */ |
d7b619cf | 1020 | struct mutex session_mutex; |
1da177e4 | 1021 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 1022 | int ses_count; /* reference counter */ |
dd3cd870 | 1023 | enum ses_status_enum ses_status; /* updates protected by cifs_tcp_ses_lock */ |
c19204cb | 1024 | unsigned int overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
1025 | char *serverOS; /* name of operating system underlying server */ |
1026 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 1027 | char *serverDomain; /* security realm of server */ |
286170aa | 1028 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
1029 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
1030 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 1031 | unsigned int capabilities; |
b438fcf1 | 1032 | char ip_addr[INET6_ADDRSTRLEN + 1]; /* Max ipv6 (or v4) addr string len */ |
34c87901 SF |
1033 | char *user_name; /* must not be null except during init of sess |
1034 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
1035 | char *domainName; |
1036 | char *password; | |
de3a9e94 | 1037 | char workstation_name[CIFS_MAX_WORKSTATION_LEN]; |
5d0d2882 | 1038 | struct session_key auth_key; |
d3686d54 | 1039 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
1040 | enum securityEnum sectype; /* what security flavor was specified? */ |
1041 | bool sign; /* is signing required? */ | |
39566443 | 1042 | bool domainAuto:1; |
5478f9ba | 1043 | __u16 session_flags; |
373512ec | 1044 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
45a4546c SP |
1045 | __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE]; |
1046 | __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE]; | |
8bd68c6e | 1047 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d AA |
1048 | |
1049 | /* | |
1050 | * Network interfaces available on the server this session is | |
1051 | * connected to. | |
1052 | * | |
1053 | * Other channels can be opened by connecting and binding this | |
1054 | * session to interfaces from this list. | |
1055 | * | |
1056 | * iface_lock should be taken when accessing any of these fields | |
1057 | */ | |
1058 | spinlock_t iface_lock; | |
724244cd | 1059 | /* ========= begin: protected by iface_lock ======== */ |
aa45dadd | 1060 | struct list_head iface_list; |
b6f0dd5d AA |
1061 | size_t iface_count; |
1062 | unsigned long iface_last_update; /* jiffies */ | |
724244cd | 1063 | /* ========= end: protected by iface_lock ======== */ |
bcc88801 | 1064 | |
724244cd SP |
1065 | spinlock_t chan_lock; |
1066 | /* ========= begin: protected by chan_lock ======== */ | |
bcc88801 | 1067 | #define CIFS_MAX_CHANNELS 16 |
d1a931ce SP |
1068 | #define CIFS_ALL_CHANNELS_SET(ses) \ |
1069 | ((1UL << (ses)->chan_count) - 1) | |
5752bf64 SP |
1070 | #define CIFS_ALL_CHANS_GOOD(ses) \ |
1071 | (!(ses)->chans_need_reconnect) | |
d1a931ce SP |
1072 | #define CIFS_ALL_CHANS_NEED_RECONNECT(ses) \ |
1073 | ((ses)->chans_need_reconnect == CIFS_ALL_CHANNELS_SET(ses)) | |
183eea2e SP |
1074 | #define CIFS_SET_ALL_CHANS_NEED_RECONNECT(ses) \ |
1075 | ((ses)->chans_need_reconnect = CIFS_ALL_CHANNELS_SET(ses)) | |
d1a931ce SP |
1076 | #define CIFS_CHAN_NEEDS_RECONNECT(ses, index) \ |
1077 | test_bit((index), &(ses)->chans_need_reconnect) | |
5752bf64 SP |
1078 | #define CIFS_CHAN_IN_RECONNECT(ses, index) \ |
1079 | ((ses)->chans[(index)].in_reconnect) | |
d1a931ce | 1080 | |
bcc88801 AA |
1081 | struct cifs_chan chans[CIFS_MAX_CHANNELS]; |
1082 | size_t chan_count; | |
1083 | size_t chan_max; | |
1084 | atomic_t chan_seq; /* round robin state */ | |
d1a931ce SP |
1085 | |
1086 | /* | |
1087 | * chans_need_reconnect is a bitmap indicating which of the channels | |
1088 | * under this smb session needs to be reconnected. | |
1089 | * If not multichannel session, only one bit will be used. | |
f486ef8e SP |
1090 | * |
1091 | * We will ask for sess and tcon reconnection only if all the | |
1092 | * channels are marked for needing reconnection. This will | |
1093 | * enable the sessions on top to continue to live till any | |
1094 | * of the channels below are active. | |
d1a931ce SP |
1095 | */ |
1096 | unsigned long chans_need_reconnect; | |
724244cd | 1097 | /* ========= end: protected by chan_lock ======== */ |
6916881f | 1098 | struct cifs_ses *dfs_root_ses; |
1da177e4 | 1099 | }; |
233839b1 | 1100 | |
29e20f9c PS |
1101 | static inline bool |
1102 | cap_unix(struct cifs_ses *ses) | |
1103 | { | |
1104 | return ses->server->vals->cap_unix & ses->capabilities; | |
1105 | } | |
1106 | ||
f695b289 RS |
1107 | /* |
1108 | * common struct for holding inode info when searching for or updating an | |
1109 | * inode with new info | |
1110 | */ | |
1111 | ||
1112 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
1113 | #define CIFS_FATTR_DELETE_PENDING 0x2 | |
1114 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
1115 | #define CIFS_FATTR_INO_COLLISION 0x8 | |
1116 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 | |
1117 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 | |
1118 | ||
1119 | struct cifs_fattr { | |
1120 | u32 cf_flags; | |
1121 | u32 cf_cifsattrs; | |
1122 | u64 cf_uniqueid; | |
1123 | u64 cf_eof; | |
1124 | u64 cf_bytes; | |
1125 | u64 cf_createtime; | |
1126 | kuid_t cf_uid; | |
1127 | kgid_t cf_gid; | |
1128 | umode_t cf_mode; | |
1129 | dev_t cf_rdev; | |
1130 | unsigned int cf_nlink; | |
1131 | unsigned int cf_dtype; | |
1132 | struct timespec64 cf_atime; | |
1133 | struct timespec64 cf_mtime; | |
1134 | struct timespec64 cf_ctime; | |
1135 | u32 cf_cifstag; | |
76894f3e | 1136 | char *cf_symlink_target; |
f695b289 RS |
1137 | }; |
1138 | ||
1da177e4 LT |
1139 | /* |
1140 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 1141 | * session |
1da177e4 | 1142 | */ |
96daf2b0 | 1143 | struct cifs_tcon { |
f1987b44 JL |
1144 | struct list_head tcon_list; |
1145 | int tc_count; | |
53e0e11e | 1146 | struct list_head rlist; /* reconnect list */ |
d7d7a66a | 1147 | spinlock_t tc_lock; /* protect anything here that is not protected */ |
fae8044c SF |
1148 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
1149 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 1150 | struct list_head openFileList; |
3afca265 | 1151 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 1152 | struct cifs_ses *ses; /* pointer to session associated with */ |
68e14569 | 1153 | char tree_name[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 1154 | char *nativeFileSystem; |
00e485b0 | 1155 | char *password; /* for share-level security */ |
faaf946a | 1156 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 | 1157 | __u16 Flags; /* optional support bits */ |
fdf59eb5 | 1158 | enum tid_status_enum status; |
1da177e4 | 1159 | atomic_t num_smbs_sent; |
44c58186 PS |
1160 | union { |
1161 | struct { | |
1162 | atomic_t num_writes; | |
1163 | atomic_t num_reads; | |
1164 | atomic_t num_flushes; | |
1165 | atomic_t num_oplock_brks; | |
1166 | atomic_t num_opens; | |
1167 | atomic_t num_closes; | |
1168 | atomic_t num_deletes; | |
1169 | atomic_t num_mkdirs; | |
1170 | atomic_t num_posixopens; | |
1171 | atomic_t num_posixmkdirs; | |
1172 | atomic_t num_rmdirs; | |
1173 | atomic_t num_renames; | |
1174 | atomic_t num_t2renames; | |
1175 | atomic_t num_ffirst; | |
1176 | atomic_t num_fnext; | |
1177 | atomic_t num_fclose; | |
1178 | atomic_t num_hardlinks; | |
1179 | atomic_t num_symlinks; | |
1180 | atomic_t num_locks; | |
1181 | atomic_t num_acl_get; | |
1182 | atomic_t num_acl_set; | |
1183 | } cifs_stats; | |
d60622eb PS |
1184 | struct { |
1185 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
1186 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
1187 | } smb2_stats; | |
44c58186 | 1188 | } stats; |
1da177e4 LT |
1189 | __u64 bytes_read; |
1190 | __u64 bytes_written; | |
3afca265 | 1191 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 1192 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 1193 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 1194 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
1195 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
1196 | bool pipe:1; /* set if connection to pipe share */ | |
1197 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
1198 | bool retry:1; |
1199 | bool nocase:1; | |
3d4ef9a1 | 1200 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
82e9367c | 1201 | bool nodelete:1; |
95b1cb90 | 1202 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 1203 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 1204 | for this mount even if server would support */ |
b326614e | 1205 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 1206 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1207 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1208 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1209 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1210 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1211 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1212 | bool use_persistent:1; /* use persistent instead of durable handles */ |
3e7a02d4 | 1213 | bool no_lease:1; /* Do not request leases on files or directories */ |
b7fd0fa0 | 1214 | bool use_witness:1; /* use witness protocol */ |
769ee6a4 | 1215 | __le32 capabilities; |
faaf946a PS |
1216 | __u32 share_flags; |
1217 | __u32 maximal_access; | |
1218 | __u32 vol_serial_number; | |
1219 | __le64 vol_create_time; | |
8b217fe7 | 1220 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
ca567eb2 | 1221 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
af6a12ea SF |
1222 | __u32 ss_flags; /* sector size flags */ |
1223 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1224 | __u32 max_chunks; |
1225 | __u32 max_bytes_chunk; | |
1226 | __u32 max_bytes_copy; | |
d03382ce SJ |
1227 | #ifdef CONFIG_CIFS_FSCACHE |
1228 | u64 resource_id; /* server resource id */ | |
70431bfd | 1229 | struct fscache_volume *fscache; /* cookie for share */ |
d03382ce | 1230 | #endif |
233839b1 | 1231 | struct list_head pending_opens; /* list of incomplete opens */ |
aea6794e | 1232 | struct cached_fids *cfids; |
c18c842b | 1233 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c | 1234 | #ifdef CONFIG_CIFS_DFS_UPCALL |
54be1f6c | 1235 | struct list_head ulist; /* cache update list */ |
396935de | 1236 | struct list_head dfs_ses_list; |
54be1f6c | 1237 | #endif |
6e1c1c08 | 1238 | struct delayed_work query_interfaces; /* query interfaces workqueue job */ |
1da177e4 LT |
1239 | }; |
1240 | ||
7ffec372 JL |
1241 | /* |
1242 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1243 | * container holds a tcon reference. It is considered safe to free one of | |
1244 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1245 | * "get" on the container. | |
1246 | */ | |
1247 | struct tcon_link { | |
b647c35f | 1248 | struct rb_node tl_rbnode; |
6d4a0832 | 1249 | kuid_t tl_uid; |
9d002df4 JL |
1250 | unsigned long tl_flags; |
1251 | #define TCON_LINK_MASTER 0 | |
1252 | #define TCON_LINK_PENDING 1 | |
1253 | #define TCON_LINK_IN_TREE 2 | |
1254 | unsigned long tl_time; | |
1255 | atomic_t tl_count; | |
96daf2b0 | 1256 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1257 | }; |
1258 | ||
9d002df4 | 1259 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1260 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1261 | |
96daf2b0 | 1262 | static inline struct cifs_tcon * |
7ffec372 JL |
1263 | tlink_tcon(struct tcon_link *tlink) |
1264 | { | |
9d002df4 | 1265 | return tlink->tl_tcon; |
7ffec372 JL |
1266 | } |
1267 | ||
8ddecf5f AA |
1268 | static inline struct tcon_link * |
1269 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1270 | { | |
1271 | return cifs_sb->master_tlink; | |
1272 | } | |
1273 | ||
9d002df4 | 1274 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1275 | |
13cfb733 JL |
1276 | static inline struct tcon_link * |
1277 | cifs_get_tlink(struct tcon_link *tlink) | |
1278 | { | |
9d002df4 JL |
1279 | if (tlink && !IS_ERR(tlink)) |
1280 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1281 | return tlink; |
1282 | } | |
1283 | ||
7ffec372 | 1284 | /* This function is always expected to succeed */ |
96daf2b0 | 1285 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1286 | |
233839b1 PS |
1287 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1288 | ||
1289 | struct cifs_pending_open { | |
1290 | struct list_head olist; | |
1291 | struct tcon_link *tlink; | |
1292 | __u8 lease_key[16]; | |
1293 | __u32 oplock; | |
1294 | }; | |
1295 | ||
c3f207ab RS |
1296 | struct cifs_deferred_close { |
1297 | struct list_head dlist; | |
1298 | struct tcon_link *tlink; | |
1299 | __u16 netfid; | |
1300 | __u64 persistent_fid; | |
1301 | __u64 volatile_fid; | |
1302 | }; | |
1303 | ||
1da177e4 | 1304 | /* |
7ee1af76 JA |
1305 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1306 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1307 | */ |
1308 | struct cifsLockInfo { | |
7ee1af76 | 1309 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1310 | struct list_head blist; /* pointer to locks blocked on this */ |
1311 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1312 | __u64 offset; |
1313 | __u64 length; | |
03776f45 | 1314 | __u32 pid; |
9645759c RS |
1315 | __u16 type; |
1316 | __u16 flags; | |
1da177e4 LT |
1317 | }; |
1318 | ||
1319 | /* | |
1320 | * One of these for each open instance of a file | |
1321 | */ | |
1322 | struct cifs_search_info { | |
1323 | loff_t index_of_last_entry; | |
1324 | __u16 entries_in_buffer; | |
1325 | __u16 info_level; | |
1326 | __u32 resume_key; | |
d38d8c74 SF |
1327 | char *ntwrk_buf_start; |
1328 | char *srch_entries_start; | |
0752f152 | 1329 | char *last_entry; |
eaf35b1e | 1330 | const char *presume_name; |
1da177e4 | 1331 | unsigned int resume_name_len; |
4b18f2a9 SF |
1332 | bool endOfSearch:1; |
1333 | bool emptyDir:1; | |
1334 | bool unicode:1; | |
1335 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1336 | }; |
1337 | ||
d0959b08 | 1338 | #define ACL_NO_MODE ((umode_t)(-1)) |
226730b4 PS |
1339 | struct cifs_open_parms { |
1340 | struct cifs_tcon *tcon; | |
1341 | struct cifs_sb_info *cifs_sb; | |
1342 | int disposition; | |
1343 | int desired_access; | |
1344 | int create_options; | |
1345 | const char *path; | |
1346 | struct cifs_fid *fid; | |
ce558b0e | 1347 | umode_t mode; |
9cbc0b73 | 1348 | bool reconnect:1; |
226730b4 PS |
1349 | }; |
1350 | ||
4b4de76e PS |
1351 | struct cifs_fid { |
1352 | __u16 netfid; | |
f0df737e PS |
1353 | __u64 persistent_fid; /* persist file id for smb2 */ |
1354 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1355 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1356 | __u8 create_guid[16]; |
86f740f2 | 1357 | __u32 access; |
233839b1 | 1358 | struct cifs_pending_open *pending_open; |
42873b0a | 1359 | unsigned int epoch; |
dfe33f9a SF |
1360 | #ifdef CONFIG_CIFS_DEBUG2 |
1361 | __u64 mid; | |
1362 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1363 | bool purge_cache; |
4b4de76e PS |
1364 | }; |
1365 | ||
f45d3416 PS |
1366 | struct cifs_fid_locks { |
1367 | struct list_head llist; | |
1368 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1369 | struct list_head locks; /* locks held by fid above */ | |
1370 | }; | |
1371 | ||
1da177e4 | 1372 | struct cifsFileInfo { |
3afca265 | 1373 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1374 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1375 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1376 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1377 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1378 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1379 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1380 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1381 | struct list_head rlist; /* reconnect list */ |
c19204cb | 1382 | /* BB add lock scope info here if needed */ |
1da177e4 | 1383 | /* lock scope id (0 if none) */ |
a5e18bc3 | 1384 | struct dentry *dentry; |
13cfb733 | 1385 | struct tcon_link *tlink; |
3afca265 | 1386 | unsigned int f_flags; |
4b18f2a9 | 1387 | bool invalidHandle:1; /* file closed via session abend */ |
4e8aea30 | 1388 | bool swapfile:1; |
3bc303c2 | 1389 | bool oplock_break_cancelled:1; |
9bd45408 PS |
1390 | unsigned int oplock_epoch; /* epoch from the lease break */ |
1391 | __u32 oplock_level; /* oplock/lease level from the lease break */ | |
3afca265 SF |
1392 | int count; |
1393 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1394 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1395 | struct cifs_search_info srch_inf; |
9b646972 | 1396 | struct work_struct oplock_break; /* work for oplock breaks */ |
32546a95 | 1397 | struct work_struct put; /* work for the final part of _put */ |
c3f207ab | 1398 | struct delayed_work deferred; |
860b69a9 | 1399 | bool deferred_close_scheduled; /* Flag to indicate close is scheduled */ |
76894f3e | 1400 | char *symlink_target; |
1da177e4 LT |
1401 | }; |
1402 | ||
fa2989f4 PS |
1403 | struct cifs_io_parms { |
1404 | __u16 netfid; | |
09a4707e PS |
1405 | __u64 persistent_fid; /* persist file id for smb2 */ |
1406 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1407 | __u32 pid; |
1408 | __u64 offset; | |
1409 | unsigned int length; | |
96daf2b0 | 1410 | struct cifs_tcon *tcon; |
352d96f3 | 1411 | struct TCP_Server_Info *server; |
fa2989f4 PS |
1412 | }; |
1413 | ||
ccf7f408 PS |
1414 | struct cifs_aio_ctx { |
1415 | struct kref refcount; | |
1416 | struct list_head list; | |
1417 | struct mutex aio_mutex; | |
1418 | struct completion done; | |
1419 | struct iov_iter iter; | |
1420 | struct kiocb *iocb; | |
1421 | struct cifsFileInfo *cfile; | |
1422 | struct bio_vec *bv; | |
c610c4b6 | 1423 | loff_t pos; |
d08089f6 | 1424 | unsigned int nr_pinned_pages; |
ccf7f408 PS |
1425 | ssize_t rc; |
1426 | unsigned int len; | |
1427 | unsigned int total_len; | |
d08089f6 | 1428 | unsigned int bv_need_unpin; /* If ->bv[] needs unpinning */ |
ccf7f408 | 1429 | bool should_dirty; |
6e6e2b86 LL |
1430 | /* |
1431 | * Indicates if this aio_ctx is for direct_io, | |
1432 | * If yes, iter is a copy of the user passed iov_iter | |
1433 | */ | |
1434 | bool direct_io; | |
ccf7f408 PS |
1435 | }; |
1436 | ||
09a4707e PS |
1437 | /* asynchronous read support */ |
1438 | struct cifs_readdata { | |
1439 | struct kref refcount; | |
1440 | struct list_head list; | |
1441 | struct completion done; | |
1442 | struct cifsFileInfo *cfile; | |
1443 | struct address_space *mapping; | |
6685c5e2 | 1444 | struct cifs_aio_ctx *ctx; |
09a4707e | 1445 | __u64 offset; |
d08089f6 | 1446 | ssize_t got_bytes; |
09a4707e PS |
1447 | unsigned int bytes; |
1448 | pid_t pid; | |
1449 | int result; | |
09a4707e | 1450 | struct work_struct work; |
d08089f6 | 1451 | struct iov_iter iter; |
738f9de5 | 1452 | struct kvec iov[2]; |
352d96f3 | 1453 | struct TCP_Server_Info *server; |
74dcf418 LL |
1454 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1455 | struct smbd_mr *mr; | |
1456 | #endif | |
335b7b62 | 1457 | struct cifs_credits credits; |
09a4707e PS |
1458 | }; |
1459 | ||
33319141 PS |
1460 | /* asynchronous write support */ |
1461 | struct cifs_writedata { | |
1462 | struct kref refcount; | |
1463 | struct list_head list; | |
1464 | struct completion done; | |
1465 | enum writeback_sync_modes sync_mode; | |
1466 | struct work_struct work; | |
1467 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1468 | struct cifs_aio_ctx *ctx; |
d08089f6 DH |
1469 | struct iov_iter iter; |
1470 | struct bio_vec *bv; | |
33319141 PS |
1471 | __u64 offset; |
1472 | pid_t pid; | |
1473 | unsigned int bytes; | |
1474 | int result; | |
352d96f3 | 1475 | struct TCP_Server_Info *server; |
db223a59 LL |
1476 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1477 | struct smbd_mr *mr; | |
1478 | #endif | |
335b7b62 | 1479 | struct cifs_credits credits; |
33319141 PS |
1480 | }; |
1481 | ||
5f6dbc9e JL |
1482 | /* |
1483 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1484 | * cfile->file_info_lock held. |
5f6dbc9e | 1485 | */ |
764a1b1a JL |
1486 | static inline void |
1487 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1488 | { |
5f6dbc9e | 1489 | ++cifs_file->count; |
6ab409b5 DK |
1490 | } |
1491 | ||
764a1b1a | 1492 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
32546a95 RS |
1493 | void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr, |
1494 | bool offload); | |
b33879aa | 1495 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1496 | |
18cceb6a PS |
1497 | #define CIFS_CACHE_READ_FLG 1 |
1498 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1499 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1500 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1501 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1502 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a | 1503 | |
874c8ca1 | 1504 | #define CIFS_CACHE_READ(cinode) ((cinode->oplock & CIFS_CACHE_READ_FLG) || (CIFS_SB(cinode->netfs.inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)) |
53ef1016 | 1505 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
874c8ca1 | 1506 | #define CIFS_CACHE_WRITE(cinode) ((cinode->oplock & CIFS_CACHE_WRITE_FLG) || (CIFS_SB(cinode->netfs.inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)) |
18cceb6a | 1507 | |
1da177e4 LT |
1508 | /* |
1509 | * One of these for each file inode | |
1510 | */ | |
1511 | ||
1512 | struct cifsInodeInfo { | |
874c8ca1 | 1513 | struct netfs_inode netfs; /* Netfslib context and vfs inode */ |
d59dad2b | 1514 | bool can_cache_brlcks; |
f45d3416 | 1515 | struct list_head llist; /* locks helb by this inode */ |
d46b0da7 DW |
1516 | /* |
1517 | * NOTE: Some code paths call down_read(lock_sem) twice, so | |
a03f507d | 1518 | * we must always use cifs_down_write() instead of down_write() |
d46b0da7 DW |
1519 | * for this semaphore to avoid deadlocks. |
1520 | */ | |
1b4b55a1 | 1521 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1522 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1523 | struct list_head openFileList; |
487317c9 | 1524 | spinlock_t open_file_lock; /* protects openFileList */ |
1da177e4 | 1525 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1526 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1527 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1528 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1529 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
9bd45408 | 1530 | #define CIFS_INODE_FLAG_UNUSED (2) /* Unused flag */ |
aff8d5ca JL |
1531 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1532 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1533 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
c3f207ab | 1534 | #define CIFS_INO_MODIFIED_ATTR (6) /* Indicate change in mtime/ctime */ |
35866f3f | 1535 | #define CIFS_INO_CLOSE_ON_LOCK (7) /* Not to defer the close when lock is set */ |
aff8d5ca | 1536 | unsigned long flags; |
c11f1df5 SP |
1537 | spinlock_t writers_lock; |
1538 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1539 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1540 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1541 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1542 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1543 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
c3f207ab RS |
1544 | struct list_head deferred_closes; /* list of deferred closes */ |
1545 | spinlock_t deferred_lock; /* protection on deferred list */ | |
0ab95c25 | 1546 | bool lease_granted; /* Flag to indicate whether lease or oplock is granted. */ |
76894f3e | 1547 | char *symlink_target; |
1da177e4 LT |
1548 | }; |
1549 | ||
1550 | static inline struct cifsInodeInfo * | |
1551 | CIFS_I(struct inode *inode) | |
1552 | { | |
874c8ca1 | 1553 | return container_of(inode, struct cifsInodeInfo, netfs.inode); |
1da177e4 LT |
1554 | } |
1555 | ||
1556 | static inline struct cifs_sb_info * | |
1557 | CIFS_SB(struct super_block *sb) | |
1558 | { | |
1559 | return sb->s_fs_info; | |
1560 | } | |
1561 | ||
7119e220 AV |
1562 | static inline struct cifs_sb_info * |
1563 | CIFS_FILE_SB(struct file *file) | |
1564 | { | |
1565 | return CIFS_SB(file_inode(file)->i_sb); | |
1566 | } | |
1567 | ||
ab2f218f | 1568 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1569 | { |
1570 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1571 | return '/'; | |
1572 | else | |
1573 | return '\\'; | |
1574 | } | |
1da177e4 | 1575 | |
f87d39d9 SF |
1576 | static inline void |
1577 | convert_delimiter(char *path, char delim) | |
1578 | { | |
1cc9bd68 | 1579 | char old_delim, *pos; |
f87d39d9 SF |
1580 | |
1581 | if (delim == '/') | |
1582 | old_delim = '\\'; | |
1583 | else | |
1584 | old_delim = '/'; | |
1585 | ||
1cc9bd68 SF |
1586 | pos = path; |
1587 | while ((pos = strchr(pos, old_delim))) | |
1588 | *pos = delim; | |
f87d39d9 SF |
1589 | } |
1590 | ||
a4544347 SF |
1591 | #define cifs_stats_inc atomic_inc |
1592 | ||
96daf2b0 | 1593 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1594 | unsigned int bytes) |
1595 | { | |
1596 | if (bytes) { | |
1597 | spin_lock(&tcon->stat_lock); | |
1598 | tcon->bytes_written += bytes; | |
1599 | spin_unlock(&tcon->stat_lock); | |
1600 | } | |
1601 | } | |
1602 | ||
96daf2b0 | 1603 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1604 | unsigned int bytes) |
1605 | { | |
1606 | spin_lock(&tcon->stat_lock); | |
1607 | tcon->bytes_read += bytes; | |
1608 | spin_unlock(&tcon->stat_lock); | |
1609 | } | |
a4544347 | 1610 | |
2b84a36c JL |
1611 | |
1612 | /* | |
44d22d84 JL |
1613 | * This is the prototype for the mid receive function. This function is for |
1614 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1615 | * just after the MID in struct smb_hdr). Note: | |
1616 | * | |
1617 | * - This will be called by cifsd, with no locks held. | |
1618 | * - The mid will still be on the pending_mid_q. | |
1619 | * - mid->resp_buf will point to the current buffer. | |
1620 | * | |
1621 | * Returns zero on a successful receive, or an error. The receive state in | |
1622 | * the TCP_Server_Info will also be updated. | |
1623 | */ | |
1624 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1625 | struct mid_q_entry *mid); | |
1626 | ||
1627 | /* | |
1628 | * This is the prototype for the mid callback function. This is called once the | |
1629 | * mid has been received off of the socket. When creating one, take special | |
1630 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1631 | * |
3c1105df JL |
1632 | * - it will be called by cifsd, with no locks held |
1633 | * - the mid will be removed from any lists | |
2b84a36c JL |
1634 | */ |
1635 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1636 | ||
9b7c18a2 PS |
1637 | /* |
1638 | * This is the protopyte for mid handle function. This is called once the mid | |
1639 | * has been recognized after decryption of the message. | |
1640 | */ | |
1641 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1642 | struct mid_q_entry *mid); | |
1643 | ||
1da177e4 LT |
1644 | /* one of these for every pending CIFS request to the server */ |
1645 | struct mid_q_entry { | |
1646 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1647 | struct kref refcount; |
2dc7e1c0 | 1648 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 | 1649 | __u64 mid; /* multiplex id */ |
c781af7e | 1650 | __u16 credits; /* number of credits consumed by this mid */ |
86a7964b | 1651 | __u16 credits_received; /* number of credits from the response */ |
7c9421e1 | 1652 | __u32 pid; /* process id */ |
1da177e4 | 1653 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1654 | unsigned long when_alloc; /* when mid was created */ |
1655 | #ifdef CONFIG_CIFS_STATS2 | |
1656 | unsigned long when_sent; /* time when smb send finished */ | |
1657 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1658 | #endif | |
44d22d84 | 1659 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1660 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1661 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1662 | void *callback_data; /* general purpose pointer for callback */ |
f1f27ad7 | 1663 | struct task_struct *creator; |
d4e4854f | 1664 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1665 | unsigned int resp_buf_size; |
7c9421e1 | 1666 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1667 | unsigned int mid_flags; |
7c9421e1 | 1668 | __le16 command; /* smb command code */ |
8a26f0f7 | 1669 | unsigned int optype; /* operation type */ |
7c9421e1 | 1670 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1671 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1672 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1673 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1674 | }; |
1675 | ||
38bd4906 SP |
1676 | struct close_cancelled_open { |
1677 | struct cifs_fid fid; | |
1678 | struct cifs_tcon *tcon; | |
1679 | struct work_struct work; | |
87bc2376 RS |
1680 | __u64 mid; |
1681 | __u16 cmd; | |
38bd4906 SP |
1682 | }; |
1683 | ||
789e6661 SF |
1684 | /* Make code in transport.c a little cleaner by moving |
1685 | update of optional stats into function below */ | |
789e6661 SF |
1686 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
1687 | { | |
1688 | atomic_inc(&server->in_send); | |
1689 | } | |
1690 | ||
1691 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1692 | { | |
1693 | atomic_dec(&server->in_send); | |
1694 | } | |
1695 | ||
1696 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1697 | { | |
1698 | atomic_inc(&server->num_waiters); | |
1699 | } | |
1700 | ||
1701 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1702 | { | |
1703 | atomic_dec(&server->num_waiters); | |
1704 | } | |
1705 | ||
1ae9a5a5 | 1706 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 SF |
1707 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1708 | { | |
1709 | mid->when_sent = jiffies; | |
1710 | } | |
1711 | #else | |
789e6661 SF |
1712 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1713 | { | |
1714 | } | |
1715 | #endif | |
1da177e4 | 1716 | |
ff5dbd9e SF |
1717 | /* for pending dnotify requests */ |
1718 | struct dir_notify_req { | |
13cd4b7f SF |
1719 | struct list_head lhead; |
1720 | __le16 Pid; | |
1721 | __le16 PidHigh; | |
1722 | __u16 Mid; | |
1723 | __u16 Tid; | |
1724 | __u16 Uid; | |
1725 | __u16 netfid; | |
1726 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1727 | int multishot; | |
1728 | struct file *pfile; | |
ff5dbd9e SF |
1729 | }; |
1730 | ||
366781c1 SF |
1731 | struct dfs_info3_param { |
1732 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1733 | int path_consumed; |
366781c1 SF |
1734 | int server_type; |
1735 | int ref_flag; | |
1736 | char *path_name; | |
1737 | char *node_name; | |
e7b602f4 | 1738 | int ttl; |
366781c1 SF |
1739 | }; |
1740 | ||
9e992755 RS |
1741 | struct file_list { |
1742 | struct list_head list; | |
1743 | struct cifsFileInfo *cfile; | |
1744 | }; | |
1745 | ||
a73a26d9 PA |
1746 | struct cifs_mount_ctx { |
1747 | struct cifs_sb_info *cifs_sb; | |
1748 | struct smb3_fs_context *fs_ctx; | |
1749 | unsigned int xid; | |
1750 | struct TCP_Server_Info *server; | |
1751 | struct cifs_ses *ses; | |
1752 | struct cifs_tcon *tcon; | |
a73a26d9 | 1753 | char *origin_fullpath, *leaf_fullpath; |
396935de | 1754 | struct list_head dfs_ses_list; |
a73a26d9 PA |
1755 | }; |
1756 | ||
366781c1 SF |
1757 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1758 | { | |
1759 | if (param) { | |
1760 | kfree(param->path_name); | |
1761 | kfree(param->node_name); | |
366781c1 SF |
1762 | } |
1763 | } | |
1764 | ||
1765 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1766 | int number_of_items) | |
1767 | { | |
1768 | int i; | |
c19204cb | 1769 | |
366781c1 SF |
1770 | if ((number_of_items == 0) || (param == NULL)) |
1771 | return; | |
1772 | for (i = 0; i < number_of_items; i++) { | |
1773 | kfree(param[i].path_name); | |
1774 | kfree(param[i].node_name); | |
1775 | } | |
1776 | kfree(param); | |
1777 | } | |
1778 | ||
9a66396f PS |
1779 | static inline bool is_interrupt_error(int error) |
1780 | { | |
1781 | switch (error) { | |
1782 | case -EINTR: | |
1783 | case -ERESTARTSYS: | |
1784 | case -ERESTARTNOHAND: | |
1785 | case -ERESTARTNOINTR: | |
1786 | return true; | |
1787 | } | |
1788 | return false; | |
1789 | } | |
1790 | ||
1791 | static inline bool is_retryable_error(int error) | |
1792 | { | |
1793 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1794 | return true; | |
1795 | return false; | |
1796 | } | |
1797 | ||
86f740f2 AA |
1798 | |
1799 | /* cifs_get_writable_file() flags */ | |
1800 | #define FIND_WR_ANY 0 | |
1801 | #define FIND_WR_FSUID_ONLY 1 | |
1802 | #define FIND_WR_WITH_DELETE 2 | |
1803 | ||
1da177e4 LT |
1804 | #define MID_FREE 0 |
1805 | #define MID_REQUEST_ALLOCATED 1 | |
1806 | #define MID_REQUEST_SUBMITTED 2 | |
1807 | #define MID_RESPONSE_RECEIVED 4 | |
1808 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1809 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1810 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1811 | |
38bd4906 SP |
1812 | /* Flags */ |
1813 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1814 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1815 | |
ec637e3f SF |
1816 | /* Types of response buffer returned from SendReceive2 */ |
1817 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1818 | #define CIFS_SMALL_BUFFER 1 | |
1819 | #define CIFS_LARGE_BUFFER 2 | |
1820 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1821 | |
133672ef | 1822 | /* Type of Request to SendReceive2 */ |
7749981e | 1823 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
392e1c5d | 1824 | #define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */ |
7749981e | 1825 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
133672ef SF |
1826 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1827 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
392e1c5d | 1828 | #define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */ |
133672ef | 1829 | |
a891f0f8 | 1830 | /* Type of request operation */ |
04ad69c3 PA |
1831 | #define CIFS_ECHO_OP 0x080 /* echo request */ |
1832 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
1833 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ | |
1834 | #define CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */ | |
0f56db83 | 1835 | /* Lower bitmask values are reserved by others below. */ |
04ad69c3 PA |
1836 | #define CIFS_SESS_OP 0x2000 /* session setup request */ |
1837 | #define CIFS_OP_MASK 0x2780 /* mask request type */ | |
7fb8986e | 1838 | |
04ad69c3 PA |
1839 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
1840 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ | |
1841 | #define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */ | |
a891f0f8 | 1842 | |
3979877e SF |
1843 | /* Security Flags: indicate type of session setup needed */ |
1844 | #define CIFSSEC_MAY_SIGN 0x00001 | |
3979877e SF |
1845 | #define CIFSSEC_MAY_NTLMV2 0x00004 |
1846 | #define CIFSSEC_MAY_KRB5 0x00008 | |
3979877e | 1847 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ |
ac683924 | 1848 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1849 | |
1850 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1851 | /* note that only one of the following can be set so the | |
1852 | result of setting MUST flags more than once will be to | |
1853 | require use of the stronger protocol */ | |
3979877e SF |
1854 | #define CIFSSEC_MUST_NTLMV2 0x04004 |
1855 | #define CIFSSEC_MUST_KRB5 0x08008 | |
0d3a01fa | 1856 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1857 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1858 | #else |
ac683924 | 1859 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1860 | #endif /* UPCALL */ |
3979877e | 1861 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ |
ac683924 | 1862 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1863 | |
896a8fc2 | 1864 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
76a3c92e RS |
1865 | #define CIFSSEC_MAX (CIFSSEC_MUST_NTLMV2) |
1866 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) | |
1da177e4 LT |
1867 | /* |
1868 | ***************************************************************** | |
1869 | * All constants go here | |
1870 | ***************************************************************** | |
1871 | */ | |
1872 | ||
1873 | #define UID_HASH (16) | |
1874 | ||
1875 | /* | |
1876 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1877 | * following to be declared. | |
1878 | */ | |
1879 | ||
1880 | /**************************************************************************** | |
d7d7a66a SP |
1881 | * Here are all the locks (spinlock, mutex, semaphore) in cifs.ko, arranged according |
1882 | * to the locking order. i.e. if two locks are to be held together, the lock that | |
1883 | * appears higher in this list needs to be taken before the other. | |
1da177e4 | 1884 | * |
d7d7a66a SP |
1885 | * If you hold a lock that is lower in this list, and you need to take a higher lock |
1886 | * (or if you think that one of the functions that you're calling may need to), first | |
1887 | * drop the lock you hold, pick up the higher lock, then the lower one. This will | |
1888 | * ensure that locks are picked up only in one direction in the below table | |
1889 | * (top to bottom). | |
1da177e4 | 1890 | * |
d7d7a66a SP |
1891 | * Also, if you expect a function to be called with a lock held, explicitly document |
1892 | * this in the comments on top of your function definition. | |
487317c9 | 1893 | * |
d7d7a66a SP |
1894 | * And also, try to keep the critical sections (lock hold time) to be as minimal as |
1895 | * possible. Blocking / calling other functions with a lock held always increase | |
1896 | * the risk of a possible deadlock. | |
1da177e4 | 1897 | * |
d7d7a66a SP |
1898 | * Following this rule will avoid unnecessary deadlocks, which can get really hard to |
1899 | * debug. Also, any new lock that you introduce, please add to this list in the correct | |
1900 | * order. | |
1901 | * | |
1902 | * Please populate this list whenever you introduce new locks in your changes. Or in | |
1903 | * case I've missed some existing locks. Please ensure that it's added in the list | |
1904 | * based on the locking order expected. | |
1905 | * | |
1906 | * ===================================================================================== | |
1907 | * Lock Protects Initialization fn | |
1908 | * ===================================================================================== | |
1909 | * vol_list_lock | |
1910 | * vol_info->ctx_lock vol_info->ctx | |
1911 | * cifs_sb_info->tlink_tree_lock cifs_sb_info->tlink_tree cifs_setup_cifs_sb | |
1912 | * TCP_Server_Info-> TCP_Server_Info cifs_get_tcp_session | |
1913 | * reconnect_mutex | |
1914 | * TCP_Server_Info->srv_mutex TCP_Server_Info cifs_get_tcp_session | |
1915 | * cifs_ses->session_mutex cifs_ses sesInfoAlloc | |
1916 | * cifs_tcon | |
1917 | * cifs_tcon->open_file_lock cifs_tcon->openFileList tconInfoAlloc | |
1918 | * cifs_tcon->pending_opens | |
1919 | * cifs_tcon->stat_lock cifs_tcon->bytes_read tconInfoAlloc | |
1920 | * cifs_tcon->bytes_written | |
1921 | * cifs_tcp_ses_lock cifs_tcp_ses_list sesInfoAlloc | |
1922 | * GlobalMid_Lock GlobalMaxActiveXid init_cifs | |
1923 | * GlobalCurrentXid | |
1924 | * GlobalTotalActiveXid | |
1925 | * TCP_Server_Info->srv_lock (anything in struct not protected by another lock and can change) | |
1926 | * TCP_Server_Info->mid_lock TCP_Server_Info->pending_mid_q cifs_get_tcp_session | |
1927 | * ->CurrentMid | |
1928 | * (any changes in mid_q_entry fields) | |
1929 | * TCP_Server_Info->req_lock TCP_Server_Info->in_flight cifs_get_tcp_session | |
1930 | * ->credits | |
1931 | * ->echo_credits | |
1932 | * ->oplock_credits | |
1933 | * ->reconnect_instance | |
1934 | * cifs_ses->ses_lock (anything that is not protected by another lock and can change) | |
1935 | * cifs_ses->iface_lock cifs_ses->iface_list sesInfoAlloc | |
1936 | * ->iface_count | |
1937 | * ->iface_last_update | |
1938 | * cifs_ses->chan_lock cifs_ses->chans | |
1939 | * ->chans_need_reconnect | |
1940 | * ->chans_in_reconnect | |
1941 | * cifs_tcon->tc_lock (anything that is not protected by another lock and can change) | |
1942 | * cifsInodeInfo->open_file_lock cifsInodeInfo->openFileList cifs_alloc_inode | |
1943 | * cifsInodeInfo->writers_lock cifsInodeInfo->writers cifsInodeInfo_alloc | |
1944 | * cifsInodeInfo->lock_sem cifsInodeInfo->llist cifs_init_once | |
1945 | * ->can_cache_brlcks | |
1946 | * cifsInodeInfo->deferred_lock cifsInodeInfo->deferred_closes cifsInodeInfo_alloc | |
1947 | * cached_fid->fid_mutex cifs_tcon->crfid tconInfoAlloc | |
1948 | * cifsFileInfo->fh_mutex cifsFileInfo cifs_new_fileinfo | |
1949 | * cifsFileInfo->file_info_lock cifsFileInfo->count cifs_new_fileinfo | |
1950 | * ->invalidHandle initiate_cifs_search | |
1951 | * ->oplock_break_cancelled | |
1952 | * cifs_aio_ctx->aio_mutex cifs_aio_ctx cifs_aio_ctx_alloc | |
1da177e4 LT |
1953 | ****************************************************************************/ |
1954 | ||
1955 | #ifdef DECLARE_GLOBALS_HERE | |
1956 | #define GLOBAL_EXTERN | |
1957 | #else | |
1958 | #define GLOBAL_EXTERN extern | |
1959 | #endif | |
1960 | ||
e7ddee90 JL |
1961 | /* |
1962 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1963 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1964 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1965 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1966 | * by iterating over cifs_tcp_ses_list |
1967 | */ | |
89e42f49 | 1968 | extern struct list_head cifs_tcp_ses_list; |
e7ddee90 | 1969 | |
f1987b44 JL |
1970 | /* |
1971 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1972 | * tcp session, and the list of tcon's per smb session. It also protects | |
d7d7a66a | 1973 | * the reference counters for the server, smb session, and tcon. |
3afca265 SF |
1974 | * generally the locks should be taken in order tcp_ses_lock before |
1975 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1976 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1977 | */ |
89e42f49 | 1978 | extern spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1979 | |
1da177e4 LT |
1980 | /* |
1981 | * Global transaction id (XID) information | |
1982 | */ | |
1bfa25ee SF |
1983 | extern unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ |
1984 | extern unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ | |
1985 | extern unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ | |
1986 | extern spinlock_t GlobalMid_Lock; /* protects above & list operations on midQ entries */ | |
1987 | ||
1da177e4 LT |
1988 | /* |
1989 | * Global counters, updated atomically | |
1990 | */ | |
1bfa25ee SF |
1991 | extern atomic_t sesInfoAllocCount; |
1992 | extern atomic_t tconInfoAllocCount; | |
1993 | extern atomic_t tcpSesNextId; | |
1994 | extern atomic_t tcpSesAllocCount; | |
1995 | extern atomic_t tcpSesReconnectCount; | |
1996 | extern atomic_t tconInfoReconnectCount; | |
1da177e4 | 1997 | |
aaa9bbe0 | 1998 | /* Various Debug counters */ |
c2c17ddb SF |
1999 | extern atomic_t buf_alloc_count; /* current number allocated */ |
2000 | extern atomic_t small_buf_alloc_count; | |
4498eed5 | 2001 | #ifdef CONFIG_CIFS_STATS2 |
c2c17ddb SF |
2002 | extern atomic_t total_buf_alloc_count; /* total allocated over all time */ |
2003 | extern atomic_t total_small_buf_alloc_count; | |
00778e22 | 2004 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 | 2005 | #endif |
1da177e4 LT |
2006 | |
2007 | /* Misc globals */ | |
f92a720e SF |
2008 | extern bool enable_oplocks; /* enable or disable oplocks */ |
2009 | extern bool lookupCacheEnabled; | |
2010 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 2011 | with more secure ntlmssp2 challenge/resp */ |
f92a720e | 2012 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
29e27923 | 2013 | extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */ |
fbfd0b46 | 2014 | extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */ |
53d31a3f | 2015 | extern bool enable_negotiate_signing; /* request use of faster (GMAC) signing if available */ |
f92a720e SF |
2016 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
2017 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
2018 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
2019 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
2020 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
2021 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ | |
c2c17ddb | 2022 | extern atomic_t mid_count; |
1da177e4 | 2023 | |
9b646972 | 2024 | void cifs_oplock_break(struct work_struct *work); |
b98749ca | 2025 | void cifs_queue_oplock_break(struct cifsFileInfo *cfile); |
c3f207ab | 2026 | void smb2_deferred_work_close(struct work_struct *work); |
3b7433b8 | 2027 | |
c3f207ab | 2028 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 2029 | extern struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 2030 | extern struct workqueue_struct *decrypt_wq; |
32546a95 | 2031 | extern struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 2032 | extern struct workqueue_struct *cifsoplockd_wq; |
c3f207ab | 2033 | extern struct workqueue_struct *deferredclose_wq; |
3d22462a | 2034 | extern __u32 cifs_lock_secret; |
abd2e44d | 2035 | |
2dc7e1c0 PS |
2036 | extern mempool_t *cifs_mid_poolp; |
2037 | ||
23db65f5 JL |
2038 | /* Operations for different SMB versions */ |
2039 | #define SMB1_VERSION_STRING "1.0" | |
7ef93ffc SF |
2040 | #define SMB20_VERSION_STRING "2.0" |
2041 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY | |
23db65f5 JL |
2042 | extern struct smb_version_operations smb1_operations; |
2043 | extern struct smb_version_values smb1_values; | |
53ef1016 | 2044 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 2045 | extern struct smb_version_values smb20_values; |
7ef93ffc | 2046 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
1080ef75 SF |
2047 | #define SMB21_VERSION_STRING "2.1" |
2048 | extern struct smb_version_operations smb21_operations; | |
2049 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
2050 | #define SMBDEFAULT_VERSION_STRING "default" |
2051 | extern struct smb_version_values smbdefault_values; | |
2052 | #define SMB3ANY_VERSION_STRING "3" | |
2053 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 2054 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 2055 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 2056 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 2057 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 2058 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
2059 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
2060 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 2061 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
2062 | #define ALT_SMB311_VERSION_STRING "3.11" |
2063 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 2064 | extern struct smb_version_values smb311_values; |
b8f7442b | 2065 | |
0b0430c6 K |
2066 | static inline char *get_security_type_str(enum securityEnum sectype) |
2067 | { | |
2068 | switch (sectype) { | |
2069 | case RawNTLMSSP: | |
2070 | return "RawNTLMSSP"; | |
2071 | case Kerberos: | |
2072 | return "Kerberos"; | |
2073 | case NTLMv2: | |
2074 | return "NTLMv2"; | |
0b0430c6 K |
2075 | default: |
2076 | return "Unknown"; | |
2077 | } | |
2078 | } | |
2079 | ||
b8f7442b AA |
2080 | static inline bool is_smb1_server(struct TCP_Server_Info *server) |
2081 | { | |
2082 | return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0; | |
2083 | } | |
2084 | ||
e183785f PA |
2085 | static inline bool is_tcon_dfs(struct cifs_tcon *tcon) |
2086 | { | |
2087 | /* | |
2088 | * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS | |
2089 | * Subsystem Notifies That a Share Is a DFS Share. | |
2090 | * | |
2091 | * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server | |
2092 | * Application Updates a Share. | |
2093 | */ | |
2094 | if (!tcon || !tcon->ses || !tcon->ses->server) | |
2095 | return false; | |
2096 | return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS : | |
2097 | tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT); | |
2098 | } | |
2099 | ||
c88f7dcd PA |
2100 | static inline bool cifs_is_referral_server(struct cifs_tcon *tcon, |
2101 | const struct dfs_info3_param *ref) | |
2102 | { | |
2103 | /* | |
2104 | * Check if all targets are capable of handling DFS referrals as per | |
2105 | * MS-DFSC 2.2.4 RESP_GET_DFS_REFERRAL. | |
2106 | */ | |
2107 | return is_tcon_dfs(tcon) || (ref && (ref->flags & DFSREF_REFERRAL_SERVER)); | |
2108 | } | |
2109 | ||
773891ff | 2110 | static inline u64 cifs_flock_len(const struct file_lock *fl) |
d80c6984 | 2111 | { |
773891ff | 2112 | return (u64)fl->fl_end - fl->fl_start + 1; |
d80c6984 PA |
2113 | } |
2114 | ||
de3a9e94 PA |
2115 | static inline size_t ntlmssp_workstation_name_size(const struct cifs_ses *ses) |
2116 | { | |
2117 | if (WARN_ON_ONCE(!ses || !ses->server)) | |
2118 | return 0; | |
2119 | /* | |
2120 | * Make workstation name no more than 15 chars when using insecure dialects as some legacy | |
2121 | * servers do require it during NTLMSSP. | |
2122 | */ | |
2123 | if (ses->server->dialect <= SMB20_PROT_ID) | |
2124 | return min_t(size_t, sizeof(ses->workstation_name), RFC1001_NAME_LEN_WITH_NULL); | |
2125 | return sizeof(ses->workstation_name); | |
2126 | } | |
2127 | ||
76894f3e PA |
2128 | static inline void move_cifs_info_to_smb2(struct smb2_file_all_info *dst, const FILE_ALL_INFO *src) |
2129 | { | |
2130 | memcpy(dst, src, (size_t)((u8 *)&src->AccessFlags - (u8 *)src)); | |
2131 | dst->AccessFlags = src->AccessFlags; | |
2132 | dst->CurrentByteOffset = src->CurrentByteOffset; | |
2133 | dst->Mode = src->Mode; | |
2134 | dst->AlignmentRequirement = src->AlignmentRequirement; | |
2135 | dst->FileNameLength = src->FileNameLength; | |
2136 | } | |
2137 | ||
d08089f6 DH |
2138 | static inline int cifs_get_num_sgs(const struct smb_rqst *rqst, |
2139 | int num_rqst, | |
2140 | const u8 *sig) | |
f7f291e1 PA |
2141 | { |
2142 | unsigned int len, skip; | |
2143 | unsigned int nents = 0; | |
2144 | unsigned long addr; | |
2145 | int i, j; | |
2146 | ||
89542781 PA |
2147 | /* |
2148 | * The first rqst has a transform header where the first 20 bytes are | |
2149 | * not part of the encrypted blob. | |
2150 | */ | |
2151 | skip = 20; | |
2152 | ||
f7f291e1 PA |
2153 | /* Assumes the first rqst has a transform header as the first iov. |
2154 | * I.e. | |
2155 | * rqst[0].rq_iov[0] is transform header | |
2156 | * rqst[0].rq_iov[1+] data to be encrypted/decrypted | |
2157 | * rqst[1+].rq_iov[0+] data to be encrypted/decrypted | |
2158 | */ | |
2159 | for (i = 0; i < num_rqst; i++) { | |
d08089f6 DH |
2160 | /* We really don't want a mixture of pinned and unpinned pages |
2161 | * in the sglist. It's hard to keep track of which is what. | |
2162 | * Instead, we convert to a BVEC-type iterator higher up. | |
f7f291e1 | 2163 | */ |
d08089f6 DH |
2164 | if (WARN_ON_ONCE(user_backed_iter(&rqst[i].rq_iter))) |
2165 | return -EIO; | |
2166 | ||
2167 | /* We also don't want to have any extra refs or pins to clean | |
2168 | * up in the sglist. | |
2169 | */ | |
2170 | if (WARN_ON_ONCE(iov_iter_extract_will_pin(&rqst[i].rq_iter))) | |
2171 | return -EIO; | |
2172 | ||
f7f291e1 PA |
2173 | for (j = 0; j < rqst[i].rq_nvec; j++) { |
2174 | struct kvec *iov = &rqst[i].rq_iov[j]; | |
2175 | ||
f7f291e1 PA |
2176 | addr = (unsigned long)iov->iov_base + skip; |
2177 | if (unlikely(is_vmalloc_addr((void *)addr))) { | |
2178 | len = iov->iov_len - skip; | |
2179 | nents += DIV_ROUND_UP(offset_in_page(addr) + len, | |
2180 | PAGE_SIZE); | |
2181 | } else { | |
2182 | nents++; | |
2183 | } | |
89542781 | 2184 | skip = 0; |
f7f291e1 | 2185 | } |
d08089f6 | 2186 | nents += iov_iter_npages(&rqst[i].rq_iter, INT_MAX); |
f7f291e1 PA |
2187 | } |
2188 | nents += DIV_ROUND_UP(offset_in_page(sig) + SMB2_SIGNATURE_SIZE, PAGE_SIZE); | |
2189 | return nents; | |
2190 | } | |
2191 | ||
2192 | /* We can not use the normal sg_set_buf() as we will sometimes pass a | |
2193 | * stack object as buf. | |
2194 | */ | |
d08089f6 DH |
2195 | static inline void cifs_sg_set_buf(struct sg_table *sgtable, |
2196 | const void *buf, | |
2197 | unsigned int buflen) | |
f7f291e1 PA |
2198 | { |
2199 | unsigned long addr = (unsigned long)buf; | |
2200 | unsigned int off = offset_in_page(addr); | |
2201 | ||
2202 | addr &= PAGE_MASK; | |
2203 | if (unlikely(is_vmalloc_addr((void *)addr))) { | |
2204 | do { | |
2205 | unsigned int len = min_t(unsigned int, buflen, PAGE_SIZE - off); | |
2206 | ||
d08089f6 DH |
2207 | sg_set_page(&sgtable->sgl[sgtable->nents++], |
2208 | vmalloc_to_page((void *)addr), len, off); | |
f7f291e1 PA |
2209 | |
2210 | off = 0; | |
2211 | addr += PAGE_SIZE; | |
2212 | buflen -= len; | |
2213 | } while (buflen); | |
2214 | } else { | |
d08089f6 DH |
2215 | sg_set_page(&sgtable->sgl[sgtable->nents++], |
2216 | virt_to_page(addr), buflen, off); | |
f7f291e1 | 2217 | } |
f7f291e1 PA |
2218 | } |
2219 | ||
abd2e44d | 2220 | #endif /* _CIFS_GLOB_H */ |