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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" |
d2b91521 | 29 | |
8d8b26e5 | 30 | #define SMB_PATH_MAX 260 |
e2292430 AA |
31 | #define CIFS_PORT 445 |
32 | #define RFC1001_PORT 139 | |
33 | ||
1da177e4 LT |
34 | /* |
35 | * The sizes of various internal tables and strings | |
36 | */ | |
37 | #define MAX_UID_INFO 16 | |
38 | #define MAX_SES_INFO 2 | |
39 | #define MAX_TCON_INFO 4 | |
40 | ||
cdf1246f | 41 | #define MAX_TREE_SIZE (2 + CIFS_NI_MAXHOST + 1 + CIFS_MAX_SHARE_LEN + 1) |
1da177e4 LT |
42 | |
43 | #define CIFS_MIN_RCV_POOL 4 | |
44 | ||
2c0c2a08 | 45 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
46 | /* |
47 | * default attribute cache timeout (jiffies) | |
48 | */ | |
49 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
50 | ||
51 | /* | |
52 | * max attribute cache timeout (jiffies) - 2^30 | |
53 | */ | |
54 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
55 | ||
ca567eb2 SF |
56 | /* |
57 | * Max persistent and resilient handle timeout (milliseconds). | |
58 | * Windows durable max was 960000 (16 minutes) | |
59 | */ | |
60 | #define SMB3_MAX_HANDLE_TIMEOUT 960000 | |
61 | ||
1da177e4 LT |
62 | /* |
63 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 64 | * on one socket concurrently. |
1da177e4 | 65 | */ |
10b9b98e | 66 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 67 | |
8ecaf67a JL |
68 | #define RFC1001_NAME_LEN 15 |
69 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
70 | ||
b327a717 AA |
71 | /* maximum length of ip addr as a string (including ipv6 and sctp) */ |
72 | #define SERVER_NAME_LENGTH 80 | |
1da177e4 LT |
73 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
74 | ||
adfeb3e0 SF |
75 | /* echo interval in seconds */ |
76 | #define SMB_ECHO_INTERVAL_MIN 1 | |
77 | #define SMB_ECHO_INTERVAL_MAX 600 | |
78 | #define SMB_ECHO_INTERVAL_DEFAULT 60 | |
9094fad1 | 79 | |
4ac0536f PA |
80 | /* dns resolution intervals in seconds */ |
81 | #define SMB_DNS_RESOLVE_INTERVAL_MIN 120 | |
506c1da4 SP |
82 | #define SMB_DNS_RESOLVE_INTERVAL_DEFAULT 600 |
83 | ||
6e1c1c08 SP |
84 | /* smb multichannel query server interfaces interval in seconds */ |
85 | #define SMB_INTERFACE_POLL_INTERVAL 600 | |
86 | ||
b24df3e3 RS |
87 | /* maximum number of PDUs in one compound */ |
88 | #define MAX_COMPOUND 5 | |
89 | ||
141891f4 SF |
90 | /* |
91 | * Default number of credits to keep available for SMB3. | |
92 | * This value is chosen somewhat arbitrarily. The Windows client | |
93 | * defaults to 128 credits, the Windows server allows clients up to | |
94 | * 512 credits (or 8K for later versions), and the NetApp server | |
95 | * does not limit clients at all. Choose a high enough default value | |
96 | * such that the client shouldn't limit performance, but allow mount | |
97 | * to override (until you approach 64K, where we limit credits to 65000 | |
98 | * to reduce possibility of seeing more server credit overflow bugs. | |
99 | */ | |
100 | #define SMB2_MAX_CREDITS_AVAILABLE 32000 | |
101 | ||
1da177e4 LT |
102 | #include "cifspdu.h" |
103 | ||
1da177e4 LT |
104 | #ifndef XATTR_DOS_ATTRIB |
105 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
106 | #endif | |
107 | ||
49bd49f9 SP |
108 | #define CIFS_MAX_WORKSTATION_LEN (__NEW_UTS_LEN + 1) /* reasonable max for client */ |
109 | ||
6916881f PA |
110 | #define CIFS_DFS_ROOT_SES(ses) ((ses)->dfs_root_ses ?: (ses)) |
111 | ||
1da177e4 LT |
112 | /* |
113 | * CIFS vfs client Status information (based on what we know.) | |
114 | */ | |
115 | ||
dd3cd870 | 116 | /* associated with each connection */ |
1da177e4 LT |
117 | enum statusEnum { |
118 | CifsNew = 0, | |
119 | CifsGood, | |
120 | CifsExiting, | |
fd88ce93 | 121 | CifsNeedReconnect, |
73f9bfbe SP |
122 | CifsNeedNegotiate, |
123 | CifsInNegotiate, | |
dd3cd870 SP |
124 | }; |
125 | ||
126 | /* associated with each smb session */ | |
127 | enum ses_status_enum { | |
128 | SES_NEW = 0, | |
129 | SES_GOOD, | |
130 | SES_EXITING, | |
131 | SES_NEED_RECON, | |
132 | SES_IN_SETUP | |
fdf59eb5 SF |
133 | }; |
134 | ||
135 | /* associated with each tree connection to the server */ | |
136 | enum tid_status_enum { | |
137 | TID_NEW = 0, | |
138 | TID_GOOD, | |
139 | TID_EXITING, | |
140 | TID_NEED_RECON, | |
141 | TID_NEED_TCON, | |
142 | TID_IN_TCON, | |
143 | TID_NEED_FILES_INVALIDATE, /* currently unused */ | |
144 | TID_IN_FILES_INVALIDATE | |
1da177e4 LT |
145 | }; |
146 | ||
147 | enum securityEnum { | |
515d82ff | 148 | Unspecified = 0, /* not specified */ |
1da177e4 | 149 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 150 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
c16fefa5 | 151 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
152 | }; |
153 | ||
5f98ca9a | 154 | struct session_key { |
b609f06a | 155 | unsigned int len; |
21e73393 | 156 | char *response; |
b609f06a SF |
157 | }; |
158 | ||
f7c5445a | 159 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 | 160 | struct cifs_secmech { |
1f3d5477 EM |
161 | struct shash_desc *hmacmd5; /* hmacmd5 hash function, for NTLMv2/CR1 hashes */ |
162 | struct shash_desc *md5; /* md5 hash function, for CIFS/SMB1 signatures */ | |
163 | struct shash_desc *hmacsha256; /* hmac-sha256 hash function, for SMB2 signatures */ | |
164 | struct shash_desc *sha512; /* sha512 hash function, for SMB3.1.1 preauth hash */ | |
165 | struct shash_desc *aes_cmac; /* block-cipher based MAC function, for SMB3 signatures */ | |
166 | ||
167 | struct crypto_aead *enc; /* smb3 encryption AEAD TFM (AES-CCM and AES-GCM) */ | |
168 | struct crypto_aead *dec; /* smb3 decryption AEAD TFM (AES-CCM and AES-GCM) */ | |
d2b91521 SP |
169 | }; |
170 | ||
d3686d54 | 171 | /* per smb session structure/fields */ |
d2b91521 | 172 | struct ntlmssp_auth { |
5c234aa5 | 173 | bool sesskey_per_smbsess; /* whether session key is per smb session */ |
d2b91521 SP |
174 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ |
175 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
176 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 177 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
178 | }; |
179 | ||
442aa310 SF |
180 | struct cifs_cred { |
181 | int uid; | |
182 | int gid; | |
183 | int mode; | |
184 | int cecount; | |
185 | struct cifs_sid osid; | |
186 | struct cifs_sid gsid; | |
187 | struct cifs_ntace *ntaces; | |
188 | struct cifs_ace *aces; | |
189 | }; | |
190 | ||
76894f3e PA |
191 | struct cifs_open_info_data { |
192 | char *symlink_target; | |
193 | union { | |
194 | struct smb2_file_all_info fi; | |
195 | struct smb311_posix_qinfo posix_fi; | |
196 | }; | |
197 | }; | |
198 | ||
199 | static inline void cifs_free_open_info(struct cifs_open_info_data *data) | |
200 | { | |
201 | kfree(data->symlink_target); | |
202 | } | |
203 | ||
1da177e4 LT |
204 | /* |
205 | ***************************************************************** | |
206 | * Except the CIFS PDUs themselves all the | |
207 | * globally interesting structs should go here | |
208 | ***************************************************************** | |
209 | */ | |
210 | ||
bf5ea0e2 JL |
211 | /* |
212 | * A smb_rqst represents a complete request to be issued to a server. It's | |
213 | * formed by a kvec array, followed by an array of pages. Page data is assumed | |
214 | * to start at the beginning of the first page. | |
215 | */ | |
216 | struct smb_rqst { | |
217 | struct kvec *rq_iov; /* array of kvecs */ | |
218 | unsigned int rq_nvec; /* number of kvecs in array */ | |
219 | struct page **rq_pages; /* pointer to array of page ptrs */ | |
57a929a6 | 220 | unsigned int rq_offset; /* the offset to the 1st page */ |
bf5ea0e2 JL |
221 | unsigned int rq_npages; /* number pages in array */ |
222 | unsigned int rq_pagesz; /* page size to use */ | |
223 | unsigned int rq_tailsz; /* length of last page */ | |
224 | }; | |
225 | ||
121b046a JL |
226 | struct mid_q_entry; |
227 | struct TCP_Server_Info; | |
55157dfb | 228 | struct cifsFileInfo; |
082d0642 | 229 | struct cifs_ses; |
2e6e02ab | 230 | struct cifs_tcon; |
b669f33c | 231 | struct dfs_info3_param; |
1208ef1f | 232 | struct cifs_fattr; |
3fa1c6d1 | 233 | struct smb3_fs_context; |
fb1214e4 | 234 | struct cifs_fid; |
fc9c5966 | 235 | struct cifs_readdata; |
c9de5c80 | 236 | struct cifs_writedata; |
f9c6e234 | 237 | struct cifs_io_parms; |
92fc65a7 | 238 | struct cifs_search_info; |
95a3f2f3 | 239 | struct cifsInodeInfo; |
226730b4 | 240 | struct cifs_open_parms; |
335b7b62 | 241 | struct cifs_credits; |
121b046a | 242 | |
23db65f5 | 243 | struct smb_version_operations { |
fb2036d8 | 244 | int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, |
121b046a | 245 | struct mid_q_entry *); |
55157dfb | 246 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 | 247 | /* setup request: allocate mid, sign message */ |
fec344e3 | 248 | struct mid_q_entry *(*setup_request)(struct cifs_ses *, |
f780bd3f AA |
249 | struct TCP_Server_Info *, |
250 | struct smb_rqst *); | |
45740847 | 251 | /* setup async request: allocate mid, sign message */ |
fec344e3 JL |
252 | struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, |
253 | struct smb_rqst *); | |
082d0642 PS |
254 | /* check response: verify signature, map error */ |
255 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
256 | bool); | |
335b7b62 PS |
257 | void (*add_credits)(struct TCP_Server_Info *server, |
258 | const struct cifs_credits *credits, | |
259 | const int optype); | |
45275789 | 260 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
261 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
262 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 263 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
c781af7e PS |
264 | void (*revert_current_mid)(struct TCP_Server_Info *server, |
265 | const unsigned int val); | |
eb378711 PS |
266 | /* data offset from read response message */ |
267 | unsigned int (*read_data_offset)(char *); | |
74dcf418 LL |
268 | /* |
269 | * Data length from read response message | |
270 | * When in_remaining is true, the returned data length is in | |
271 | * message field DataRemaining for out-of-band data read (e.g through | |
272 | * Memory Registration RDMA write in SMBD). | |
273 | * Otherwise, the returned data length is in message field DataLength. | |
274 | */ | |
275 | unsigned int (*read_data_length)(char *, bool in_remaining); | |
eb378711 PS |
276 | /* map smb to linux error */ |
277 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
278 | /* find mid corresponding to the response message */ |
279 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
14547f7d | 280 | void (*dump_detail)(void *buf, struct TCP_Server_Info *ptcp_info); |
44c58186 PS |
281 | void (*clear_stats)(struct cifs_tcon *); |
282 | void (*print_stats)(struct seq_file *m, struct cifs_tcon *); | |
769ee6a4 | 283 | void (*dump_share_caps)(struct seq_file *, struct cifs_tcon *); |
8aa26f3e | 284 | /* verify the message */ |
373512ec | 285 | int (*check_message)(char *, unsigned int, struct TCP_Server_Info *); |
8aa26f3e | 286 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); |
04ad69c3 | 287 | int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *); |
9bd45408 PS |
288 | void (*downgrade_oplock)(struct TCP_Server_Info *server, |
289 | struct cifsInodeInfo *cinode, __u32 oplock, | |
290 | unsigned int epoch, bool *purge_cache); | |
316cf94a PS |
291 | /* process transaction2 response */ |
292 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
293 | char *, int); | |
286170aa PS |
294 | /* check if we need to negotiate */ |
295 | bool (*need_neg)(struct TCP_Server_Info *); | |
296 | /* negotiate to the server */ | |
f486ef8e SP |
297 | int (*negotiate)(const unsigned int xid, |
298 | struct cifs_ses *ses, | |
299 | struct TCP_Server_Info *server); | |
24985c53 | 300 | /* set negotiated write size */ |
3fa1c6d1 | 301 | unsigned int (*negotiate_wsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
24985c53 | 302 | /* set negotiated read size */ |
3fa1c6d1 | 303 | unsigned int (*negotiate_rsize)(struct cifs_tcon *tcon, struct smb3_fs_context *ctx); |
58c45c58 PS |
304 | /* setup smb sessionn */ |
305 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
f486ef8e | 306 | struct TCP_Server_Info *server, |
58c45c58 PS |
307 | const struct nls_table *); |
308 | /* close smb session */ | |
309 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
310 | /* connect to a server share */ |
311 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
312 | struct cifs_tcon *, const struct nls_table *); | |
313 | /* close tree connecion */ | |
314 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
b669f33c PS |
315 | /* get DFS referrals */ |
316 | int (*get_dfs_refer)(const unsigned int, struct cifs_ses *, | |
317 | const char *, struct dfs_info3_param **, | |
318 | unsigned int *, const struct nls_table *, int); | |
af4281dc | 319 | /* informational QFS call */ |
0f060936 AG |
320 | void (*qfs_tcon)(const unsigned int, struct cifs_tcon *, |
321 | struct cifs_sb_info *); | |
68889f26 PS |
322 | /* check if a path is accessible or not */ |
323 | int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, | |
324 | struct cifs_sb_info *, const char *); | |
1208ef1f | 325 | /* query path data from the server */ |
76894f3e PA |
326 | int (*query_path_info)(const unsigned int xid, struct cifs_tcon *tcon, |
327 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
328 | struct cifs_open_info_data *data, bool *adjust_tz, bool *reparse); | |
4ad65044 | 329 | /* query file data from the server */ |
76894f3e PA |
330 | int (*query_file_info)(const unsigned int xid, struct cifs_tcon *tcon, |
331 | struct cifsFileInfo *cfile, struct cifs_open_info_data *data); | |
2e4564b3 SF |
332 | /* query reparse tag from srv to determine which type of special file */ |
333 | int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon, | |
334 | struct cifs_sb_info *cifs_sb, const char *path, | |
335 | __u32 *reparse_tag); | |
1208ef1f | 336 | /* get server index number */ |
76894f3e PA |
337 | int (*get_srv_inum)(const unsigned int xid, struct cifs_tcon *tcon, |
338 | struct cifs_sb_info *cifs_sb, const char *full_path, u64 *uniqueid, | |
339 | struct cifs_open_info_data *data); | |
d1433418 PS |
340 | /* set size by path */ |
341 | int (*set_path_size)(const unsigned int, struct cifs_tcon *, | |
342 | const char *, __u64, struct cifs_sb_info *, bool); | |
343 | /* set size by file handle */ | |
344 | int (*set_file_size)(const unsigned int, struct cifs_tcon *, | |
345 | struct cifsFileInfo *, __u64, bool); | |
6bdf6dbd PS |
346 | /* set attributes */ |
347 | int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, | |
348 | const unsigned int); | |
64a5cfa6 SF |
349 | int (*set_compression)(const unsigned int, struct cifs_tcon *, |
350 | struct cifsFileInfo *); | |
f6d76178 PS |
351 | /* check if we can send an echo or nor */ |
352 | bool (*can_echo)(struct TCP_Server_Info *); | |
353 | /* send echo request */ | |
354 | int (*echo)(struct TCP_Server_Info *); | |
f436720e | 355 | /* create directory */ |
bea851b8 SF |
356 | int (*posix_mkdir)(const unsigned int xid, struct inode *inode, |
357 | umode_t mode, struct cifs_tcon *tcon, | |
358 | const char *full_path, | |
359 | struct cifs_sb_info *cifs_sb); | |
c3ca78e2 SF |
360 | int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode, |
361 | struct cifs_tcon *tcon, const char *name, | |
362 | struct cifs_sb_info *sb); | |
f436720e PS |
363 | /* set info on created directory */ |
364 | void (*mkdir_setinfo)(struct inode *, const char *, | |
365 | struct cifs_sb_info *, struct cifs_tcon *, | |
366 | const unsigned int); | |
f958ca5d PS |
367 | /* remove directory */ |
368 | int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, | |
369 | struct cifs_sb_info *); | |
ed6875e0 PS |
370 | /* unlink file */ |
371 | int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, | |
372 | struct cifs_sb_info *); | |
373 | /* open, rename and delete file */ | |
374 | int (*rename_pending_delete)(const char *, struct dentry *, | |
375 | const unsigned int); | |
8ceb9843 PS |
376 | /* send rename request */ |
377 | int (*rename)(const unsigned int, struct cifs_tcon *, const char *, | |
378 | const char *, struct cifs_sb_info *); | |
d6e906f1 SF |
379 | /* send create hardlink request */ |
380 | int (*create_hardlink)(const unsigned int, struct cifs_tcon *, | |
381 | const char *, const char *, | |
382 | struct cifs_sb_info *); | |
b42bf888 PS |
383 | /* query symlink target */ |
384 | int (*query_symlink)(const unsigned int, struct cifs_tcon *, | |
ebaf546a RS |
385 | struct cifs_sb_info *, const char *, |
386 | char **, bool); | |
fb1214e4 | 387 | /* open a file for non-posix mounts */ |
76894f3e PA |
388 | int (*open)(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, |
389 | void *buf); | |
fb1214e4 PS |
390 | /* set fid protocol-specific info */ |
391 | void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); | |
0ff78a22 | 392 | /* close a file */ |
760ad0ca PS |
393 | void (*close)(const unsigned int, struct cifs_tcon *, |
394 | struct cifs_fid *); | |
43f8a6a7 SF |
395 | /* close a file, returning file attributes and timestamps */ |
396 | void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon, | |
397 | struct cifsFileInfo *pfile_info); | |
1d8c4c00 PS |
398 | /* send a flush request to the server */ |
399 | int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); | |
fc9c5966 PS |
400 | /* async read from the server */ |
401 | int (*async_readv)(struct cifs_readdata *); | |
c9de5c80 | 402 | /* async write to the server */ |
4a5c80d7 SF |
403 | int (*async_writev)(struct cifs_writedata *, |
404 | void (*release)(struct kref *)); | |
f9c6e234 | 405 | /* sync read from the server */ |
db8b631d | 406 | int (*sync_read)(const unsigned int, struct cifs_fid *, |
f9c6e234 PS |
407 | struct cifs_io_parms *, unsigned int *, char **, |
408 | int *); | |
ba9ad725 | 409 | /* sync write to the server */ |
db8b631d | 410 | int (*sync_write)(const unsigned int, struct cifs_fid *, |
ba9ad725 PS |
411 | struct cifs_io_parms *, unsigned int *, struct kvec *, |
412 | unsigned long); | |
92fc65a7 PS |
413 | /* open dir, start readdir */ |
414 | int (*query_dir_first)(const unsigned int, struct cifs_tcon *, | |
415 | const char *, struct cifs_sb_info *, | |
416 | struct cifs_fid *, __u16, | |
417 | struct cifs_search_info *); | |
418 | /* continue readdir */ | |
419 | int (*query_dir_next)(const unsigned int, struct cifs_tcon *, | |
420 | struct cifs_fid *, | |
421 | __u16, struct cifs_search_info *srch_inf); | |
422 | /* close dir */ | |
423 | int (*close_dir)(const unsigned int, struct cifs_tcon *, | |
424 | struct cifs_fid *); | |
425 | /* calculate a size of SMB message */ | |
68ed1449 | 426 | unsigned int (*calc_smb_size)(void *buf); |
66265f13 PS |
427 | /* check for STATUS_PENDING and process the response if yes */ |
428 | bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server); | |
511c54a2 PS |
429 | /* check for STATUS_NETWORK_SESSION_EXPIRED */ |
430 | bool (*is_session_expired)(char *); | |
95a3f2f3 PS |
431 | /* send oplock break response */ |
432 | int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, | |
433 | struct cifsInodeInfo *); | |
76ec5e33 PS |
434 | /* query remote filesystem */ |
435 | int (*queryfs)(const unsigned int, struct cifs_tcon *, | |
0f060936 | 436 | struct cifs_sb_info *, struct kstatfs *); |
d39a4f71 PS |
437 | /* send mandatory brlock to the server */ |
438 | int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, | |
439 | __u64, __u32, int, int, bool); | |
440 | /* unlock range of mandatory locks */ | |
441 | int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, | |
442 | const unsigned int); | |
443 | /* push brlocks from the cache to the server */ | |
444 | int (*push_mand_locks)(struct cifsFileInfo *); | |
b8c32dbb | 445 | /* get lease key of the inode */ |
a41a28bd | 446 | void (*get_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 447 | /* set lease key of the inode */ |
a41a28bd | 448 | void (*set_lease_key)(struct inode *, struct cifs_fid *); |
b8c32dbb | 449 | /* generate new lease key */ |
a41a28bd | 450 | void (*new_lease_key)(struct cifs_fid *); |
f486ef8e SP |
451 | int (*generate_signingkey)(struct cifs_ses *ses, |
452 | struct TCP_Server_Info *server); | |
eda1c54f LL |
453 | int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *, |
454 | bool allocate_crypto); | |
b3152e2c SF |
455 | int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon, |
456 | struct cifsFileInfo *src_file); | |
834170c8 SF |
457 | int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon, |
458 | struct cifsFileInfo *src_file, void __user *); | |
d26c2ddd | 459 | int (*notify)(const unsigned int xid, struct file *pfile, |
e3e94634 | 460 | void __user *pbuf, bool return_changes); |
b5be1a1c SP |
461 | int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, |
462 | struct cifs_sb_info *, const unsigned char *, | |
463 | char *, unsigned int *); | |
cbb0aba6 SP |
464 | int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, |
465 | struct cifs_sb_info *, const unsigned char *, | |
466 | char *, unsigned int *); | |
53ef1016 PS |
467 | /* if we can do cache read operations */ |
468 | bool (*is_read_op)(__u32); | |
469 | /* set oplock level for the inode */ | |
42873b0a PS |
470 | void (*set_oplock_level)(struct cifsInodeInfo *, __u32, unsigned int, |
471 | bool *); | |
a41a28bd | 472 | /* create lease context buffer for CREATE request */ |
729c0c9d | 473 | char * (*create_lease_buf)(u8 *lease_key, u8 oplock); |
42873b0a | 474 | /* parse lease context buffer and return oplock/epoch info */ |
96164ab2 | 475 | __u8 (*parse_lease_buf)(void *buf, unsigned int *epoch, char *lkey); |
620d8745 | 476 | ssize_t (*copychunk_range)(const unsigned int, |
312bbc59 | 477 | struct cifsFileInfo *src_file, |
620d8745 SP |
478 | struct cifsFileInfo *target_file, |
479 | u64 src_off, u64 len, u64 dest_off); | |
02b16665 SF |
480 | int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src, |
481 | struct cifsFileInfo *target_file, u64 src_off, u64 len, | |
482 | u64 dest_off); | |
ff1c038a | 483 | int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); |
666753c3 SF |
484 | ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, |
485 | const unsigned char *, const unsigned char *, char *, | |
67b4c889 | 486 | size_t, struct cifs_sb_info *); |
666753c3 SF |
487 | int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, |
488 | const char *, const void *, const __u16, | |
5517554e | 489 | const struct nls_table *, struct cifs_sb_info *); |
83e3bc23 | 490 | struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, |
3970acf7 | 491 | const char *, u32 *, u32); |
42eacf9e | 492 | struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, |
3970acf7 | 493 | const struct cifs_fid *, u32 *, u32); |
83e3bc23 SF |
494 | int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, |
495 | int); | |
7f6c5008 PS |
496 | /* writepages retry size */ |
497 | unsigned int (*wp_retry_size)(struct inode *); | |
cb7e9eab PS |
498 | /* get mtu credits */ |
499 | int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int, | |
335b7b62 | 500 | unsigned int *, struct cifs_credits *); |
9a1c67e8 PS |
501 | /* adjust previously taken mtu credits to request size */ |
502 | int (*adjust_credits)(struct TCP_Server_Info *server, | |
503 | struct cifs_credits *credits, | |
504 | const unsigned int payload_size); | |
52755808 PS |
505 | /* check if we need to issue closedir */ |
506 | bool (*dir_needs_close)(struct cifsFileInfo *); | |
31742c5a SF |
507 | long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, |
508 | loff_t); | |
7fb8986e | 509 | /* init transform request - used for encryption for now */ |
b2c96de7 RS |
510 | int (*init_transform_rq)(struct TCP_Server_Info *, int num_rqst, |
511 | struct smb_rqst *, struct smb_rqst *); | |
9bb17e09 PS |
512 | int (*is_transform_hdr)(void *buf); |
513 | int (*receive_transform)(struct TCP_Server_Info *, | |
b24df3e3 | 514 | struct mid_q_entry **, char **, int *); |
ef65aaed SP |
515 | enum securityEnum (*select_sectype)(struct TCP_Server_Info *, |
516 | enum securityEnum); | |
8ce79ec3 | 517 | int (*next_header)(char *); |
f5b05d62 RS |
518 | /* ioctl passthrough for query_info */ |
519 | int (*ioctl_query_info)(const unsigned int xid, | |
8d8b26e5 | 520 | struct cifs_tcon *tcon, |
0f060936 | 521 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 522 | __le16 *path, int is_dir, |
f5b05d62 | 523 | unsigned long p); |
c847dccf AA |
524 | /* make unix special files (block, char, fifo, socket) */ |
525 | int (*make_node)(unsigned int xid, | |
526 | struct inode *inode, | |
527 | struct dentry *dentry, | |
528 | struct cifs_tcon *tcon, | |
55869139 | 529 | const char *full_path, |
c847dccf AA |
530 | umode_t mode, |
531 | dev_t device_number); | |
2f3ebaba RS |
532 | /* version specific fiemap implementation */ |
533 | int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *, | |
534 | struct fiemap_extent_info *, u64, u64); | |
dece44e3 RS |
535 | /* version specific llseek implementation */ |
536 | loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int); | |
8e670f77 RS |
537 | /* Check for STATUS_IO_TIMEOUT */ |
538 | bool (*is_status_io_timeout)(char *buf); | |
9e550b08 RS |
539 | /* Check for STATUS_NETWORK_NAME_DELETED */ |
540 | void (*is_network_name_deleted)(char *buf, struct TCP_Server_Info *srv); | |
23db65f5 JL |
541 | }; |
542 | ||
543 | struct smb_version_values { | |
544 | char *version_string; | |
e4aa25e7 SF |
545 | __u16 protocol_id; |
546 | __u32 req_capabilities; | |
106dc538 PS |
547 | __u32 large_lock_type; |
548 | __u32 exclusive_lock_type; | |
549 | __u32 shared_lock_type; | |
550 | __u32 unlock_lock_type; | |
93012bf9 | 551 | size_t header_preamble_size; |
1887f601 PS |
552 | size_t header_size; |
553 | size_t max_header_size; | |
eb378711 | 554 | size_t read_rsp_size; |
2dc7e1c0 | 555 | __le16 lock_cmd; |
29e20f9c PS |
556 | unsigned int cap_unix; |
557 | unsigned int cap_nt_find; | |
558 | unsigned int cap_large_files; | |
50285882 JL |
559 | __u16 signing_enabled; |
560 | __u16 signing_required; | |
a41a28bd | 561 | size_t create_lease_size; |
23db65f5 JL |
562 | }; |
563 | ||
1887f601 PS |
564 | #define HEADER_SIZE(server) (server->vals->header_size) |
565 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
9789de8b | 566 | #define HEADER_PREAMBLE_SIZE(server) (server->vals->header_preamble_size) |
b6b3624d | 567 | #define MID_HEADER_SIZE(server) (HEADER_SIZE(server) - 1 - HEADER_PREAMBLE_SIZE(server)) |
1887f601 | 568 | |
d070f9dd AA |
569 | /** |
570 | * CIFS superblock mount flags (mnt_cifs_flags) to consider when | |
571 | * trying to reuse existing superblock for a new mount | |
572 | */ | |
25c7f41e PS |
573 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
574 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
575 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
2baa2682 | 576 | CIFS_MOUNT_MAP_SFM_CHR | \ |
25c7f41e PS |
577 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ |
578 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
579 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
580 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
581 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 | 582 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
d070f9dd | 583 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ |
6552d6a0 | 584 | CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ |
83bbfa70 | 585 | CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ |
41e033fe | 586 | CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) |
25c7f41e | 587 | |
d070f9dd AA |
588 | /** |
589 | * Generic VFS superblock mount flags (s_flags) to consider when | |
590 | * trying to reuse existing superblock for a new mount | |
591 | */ | |
1751e8a6 LT |
592 | #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \ |
593 | SB_NODEV | SB_SYNCHRONOUS) | |
25c7f41e PS |
594 | |
595 | struct cifs_mnt_data { | |
596 | struct cifs_sb_info *cifs_sb; | |
3fa1c6d1 | 597 | struct smb3_fs_context *ctx; |
25c7f41e PS |
598 | int flags; |
599 | }; | |
600 | ||
792af7b0 PS |
601 | static inline unsigned int |
602 | get_rfc1002_length(void *buf) | |
603 | { | |
dca1c8d1 | 604 | return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
792af7b0 PS |
605 | } |
606 | ||
ec2e4523 PS |
607 | static inline void |
608 | inc_rfc1001_len(void *buf, int count) | |
609 | { | |
610 | be32_add_cpu((__be32 *)buf, count); | |
611 | } | |
612 | ||
1da177e4 | 613 | struct TCP_Server_Info { |
3b795210 SF |
614 | struct list_head tcp_ses_list; |
615 | struct list_head smb_ses_list; | |
d7d7a66a | 616 | spinlock_t srv_lock; /* protect anything here that is not protected */ |
6d82c27a | 617 | __u64 conn_id; /* connection identifier (useful for debugging) */ |
e7ddee90 | 618 | int srv_count; /* reference counter */ |
a10faeb2 | 619 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 620 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
621 | struct smb_version_operations *ops; |
622 | struct smb_version_values *vals; | |
080dc5e5 | 623 | /* updates to tcpStatus protected by cifs_tcp_ses_lock */ |
c3dccf48 | 624 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 625 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 626 | struct socket *ssocket; |
a9f1b85e | 627 | struct sockaddr_storage dstaddr; |
3eb9a889 | 628 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
629 | #ifdef CONFIG_NET_NS |
630 | struct net *net; | |
631 | #endif | |
d38d8c74 | 632 | wait_queue_head_t response_q; |
1da177e4 | 633 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
d7d7a66a | 634 | spinlock_t mid_lock; /* protect mid queue and it's entries */ |
1da177e4 | 635 | struct list_head pending_mid_q; |
edf1ae40 SF |
636 | bool noblocksnd; /* use blocking sendmsg */ |
637 | bool noautotune; /* do not autotune send buf sizes */ | |
c9f1c19c | 638 | bool nosharesock; |
6a5fa236 | 639 | bool tcp_nodelay; |
141891f4 SF |
640 | unsigned int credits; /* send no more requests at once */ |
641 | unsigned int max_credits; /* can override large 32000 default at mnt */ | |
fc40f9cf | 642 | unsigned int in_flight; /* number of requests on the wire to server */ |
1b63f184 | 643 | unsigned int max_in_flight; /* max number of requests that were on wire */ |
2d86dbc9 | 644 | spinlock_t req_lock; /* protect the two values above */ |
cc391b69 VW |
645 | struct mutex _srv_mutex; |
646 | unsigned int nofs_flag; | |
1da177e4 LT |
647 | struct task_struct *tsk; |
648 | char server_GUID[16]; | |
286170aa | 649 | __u16 sec_mode; |
38d77c50 | 650 | bool sign; /* is signing enabled on this connection? */ |
4f5c10f1 | 651 | bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */ |
c3dccf48 | 652 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
653 | int echo_credits; /* echo reserved slots */ |
654 | int oplock_credits; /* oplock break reserved slots */ | |
655 | bool echoes:1; /* enable echoes */ | |
39552ea8 | 656 | __u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */ |
c3dccf48 | 657 | u16 dialect; /* dialect index that server chose */ |
10b9b98e | 658 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
659 | unsigned int maxReq; /* Clients should submit no more */ |
660 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
11911b95 | 661 | /* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */ |
1da177e4 LT |
662 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
663 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
664 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
665 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 666 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
667 | /* message size the server can send or receive for */ |
668 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
29e20f9c | 669 | unsigned int capabilities; /* selective disabling of caps by smb sess */ |
de7ed55d | 670 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
0fa757b5 | 671 | __u64 CurrentMid; /* multiplex id - rotating counter, protected by GlobalMid_Lock */ |
d3ba50b1 | 672 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 673 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 674 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 675 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
9e1a37da | 676 | __u32 reconnect_instance; /* incremented on each reconnect */ |
5f98ca9a | 677 | struct session_key session_key; |
3a5ff61c | 678 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 679 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
e598d1d8 JL |
680 | #define CIFS_NEGFLAVOR_UNENCAP 1 /* wct == 17, but no ext_sec */ |
681 | #define CIFS_NEGFLAVOR_EXTENDED 2 /* wct == 17, ext_sec bit set */ | |
682 | char negflavor; /* NEGOTIATE response flavor */ | |
26efa0ba | 683 | /* extended security flavors that server supports */ |
c3dccf48 JL |
684 | bool sec_ntlmssp; /* supports NTLMSSP */ |
685 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
686 | bool sec_kerberos; /* supports plain Kerberos */ |
687 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 688 | bool large_buf; /* is current buffer large? */ |
8339dd32 LL |
689 | /* use SMBD connection instead of socket */ |
690 | bool rdma; | |
691 | /* point to the SMBD connection if RDMA is used instead of socket */ | |
692 | struct smbd_connection *smbd_conn; | |
c74093b6 | 693 | struct delayed_work echo; /* echo ping workqueue job */ |
506c1da4 | 694 | struct delayed_work resolve; /* dns resolution workqueue job */ |
2a37ef94 JL |
695 | char *smallbuf; /* pointer to current "small" buffer */ |
696 | char *bigbuf; /* pointer to current "big" buffer */ | |
2e96467d RS |
697 | /* Total size of this PDU. Only valid from cifs_demultiplex_thread */ |
698 | unsigned int pdu_size; | |
2a37ef94 | 699 | unsigned int total_read; /* total amount of data read in this pass */ |
1ae9a5a5 SF |
700 | atomic_t in_send; /* requests trying to send */ |
701 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
c3dccf48 | 702 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 | 703 | atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */ |
468d6779 | 704 | atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */ |
433b8dd7 SF |
705 | __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */ |
706 | __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
707 | __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS]; | |
468d6779 | 708 | #endif /* STATS2 */ |
ec2e4523 PS |
709 | unsigned int max_read; |
710 | unsigned int max_write; | |
563317ec | 711 | unsigned int min_offload; |
26ea888f | 712 | __le16 compress_algorithm; |
53d31a3f | 713 | __u16 signing_algorithm; |
5100d8a3 | 714 | __le16 cipher_type; |
8bd68c6e AA |
715 | /* save initital negprot hash */ |
716 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; | |
53d31a3f | 717 | bool signing_negotiated; /* true if valid signing context rcvd from server */ |
fcef0db6 | 718 | bool posix_ext_supported; |
53e0e11e PS |
719 | struct delayed_work reconnect; /* reconnect workqueue job */ |
720 | struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ | |
adfeb3e0 | 721 | unsigned long echo_interval; |
93d5cb51 PA |
722 | |
723 | /* | |
724 | * Number of targets available for reconnect. The more targets | |
725 | * the more tasks have to wait to let the demultiplex thread | |
726 | * reconnect. | |
727 | */ | |
728 | int nr_targets; | |
8eecd1c2 | 729 | bool noblockcnt; /* use non-blocking connect() */ |
0f2b305a SP |
730 | |
731 | /* | |
732 | * If this is a session channel, | |
733 | * primary_server holds the ref-counted | |
734 | * pointer to primary channel connection for the session. | |
735 | */ | |
736 | #define CIFS_SERVER_IS_CHAN(server) (!!(server)->primary_server) | |
737 | struct TCP_Server_Info *primary_server; | |
738 | ||
121d947d SC |
739 | #ifdef CONFIG_CIFS_SWN_UPCALL |
740 | bool use_swn_dstaddr; | |
741 | struct sockaddr_storage swn_dstaddr; | |
742 | #endif | |
c88f7dcd PA |
743 | struct mutex refpath_lock; /* protects leaf_fullpath */ |
744 | /* | |
745 | * Canonical DFS full paths that were used to chase referrals in mount and reconnect. | |
746 | * | |
747 | * origin_fullpath: first or original referral path | |
748 | * leaf_fullpath: last referral path (might be changed due to nested links in reconnect) | |
749 | * | |
750 | * current_fullpath: pointer to either origin_fullpath or leaf_fullpath | |
751 | * NOTE: cannot be accessed outside cifs_reconnect() and smb2_reconnect() | |
752 | * | |
753 | * format: \\HOST\SHARE\[OPTIONAL PATH] | |
754 | */ | |
755 | char *origin_fullpath, *leaf_fullpath, *current_fullpath; | |
1da177e4 LT |
756 | }; |
757 | ||
d291e703 ZX |
758 | static inline bool is_smb1(struct TCP_Server_Info *server) |
759 | { | |
760 | return HEADER_PREAMBLE_SIZE(server) != 0; | |
761 | } | |
762 | ||
cc391b69 VW |
763 | static inline void cifs_server_lock(struct TCP_Server_Info *server) |
764 | { | |
765 | unsigned int nofs_flag = memalloc_nofs_save(); | |
766 | ||
767 | mutex_lock(&server->_srv_mutex); | |
768 | server->nofs_flag = nofs_flag; | |
769 | } | |
770 | ||
771 | static inline void cifs_server_unlock(struct TCP_Server_Info *server) | |
772 | { | |
773 | unsigned int nofs_flag = server->nofs_flag; | |
774 | ||
775 | mutex_unlock(&server->_srv_mutex); | |
776 | memalloc_nofs_restore(nofs_flag); | |
777 | } | |
778 | ||
335b7b62 PS |
779 | struct cifs_credits { |
780 | unsigned int value; | |
781 | unsigned int instance; | |
782 | }; | |
783 | ||
fc40f9cf PS |
784 | static inline unsigned int |
785 | in_flight(struct TCP_Server_Info *server) | |
786 | { | |
787 | unsigned int num; | |
c19204cb | 788 | |
fc40f9cf PS |
789 | spin_lock(&server->req_lock); |
790 | num = server->in_flight; | |
791 | spin_unlock(&server->req_lock); | |
792 | return num; | |
793 | } | |
794 | ||
2d86dbc9 | 795 | static inline bool |
b227d215 | 796 | has_credits(struct TCP_Server_Info *server, int *credits, int num_credits) |
fc40f9cf | 797 | { |
2d86dbc9 | 798 | int num; |
c19204cb | 799 | |
fc40f9cf | 800 | spin_lock(&server->req_lock); |
bc205ed1 | 801 | num = *credits; |
fc40f9cf | 802 | spin_unlock(&server->req_lock); |
b227d215 | 803 | return num >= num_credits; |
fc40f9cf PS |
804 | } |
805 | ||
45275789 | 806 | static inline void |
34f4deb7 | 807 | add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits, |
a891f0f8 | 808 | const int optype) |
45275789 | 809 | { |
34f4deb7 | 810 | server->ops->add_credits(server, credits, optype); |
45275789 PS |
811 | } |
812 | ||
cb7e9eab | 813 | static inline void |
335b7b62 PS |
814 | add_credits_and_wake_if(struct TCP_Server_Info *server, |
815 | const struct cifs_credits *credits, const int optype) | |
cb7e9eab | 816 | { |
335b7b62 PS |
817 | if (credits->value) { |
818 | server->ops->add_credits(server, credits, optype); | |
cb7e9eab PS |
819 | wake_up(&server->request_q); |
820 | } | |
821 | } | |
822 | ||
45275789 PS |
823 | static inline void |
824 | set_credits(struct TCP_Server_Info *server, const int val) | |
825 | { | |
826 | server->ops->set_credits(server, val); | |
827 | } | |
828 | ||
9a1c67e8 PS |
829 | static inline int |
830 | adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits, | |
831 | const unsigned int payload_size) | |
832 | { | |
833 | return server->ops->adjust_credits ? | |
834 | server->ops->adjust_credits(server, credits, payload_size) : 0; | |
835 | } | |
836 | ||
9235d098 | 837 | static inline __le64 |
3d378d3f | 838 | get_next_mid64(struct TCP_Server_Info *server) |
88257360 | 839 | { |
9235d098 | 840 | return cpu_to_le64(server->ops->get_next_mid(server)); |
88257360 PS |
841 | } |
842 | ||
3d378d3f TG |
843 | static inline __le16 |
844 | get_next_mid(struct TCP_Server_Info *server) | |
845 | { | |
9235d098 | 846 | __u16 mid = server->ops->get_next_mid(server); |
3d378d3f TG |
847 | /* |
848 | * The value in the SMB header should be little endian for easy | |
849 | * on-the-wire decoding. | |
850 | */ | |
851 | return cpu_to_le16(mid); | |
852 | } | |
853 | ||
c781af7e PS |
854 | static inline void |
855 | revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
856 | { | |
857 | if (server->ops->revert_current_mid) | |
858 | server->ops->revert_current_mid(server, val); | |
859 | } | |
860 | ||
861 | static inline void | |
862 | revert_current_mid_from_hdr(struct TCP_Server_Info *server, | |
0d35e382 | 863 | const struct smb2_hdr *shdr) |
c781af7e PS |
864 | { |
865 | unsigned int num = le16_to_cpu(shdr->CreditCharge); | |
866 | ||
867 | return revert_current_mid(server, num > 0 ? num : 1); | |
868 | } | |
869 | ||
3d378d3f TG |
870 | static inline __u16 |
871 | get_mid(const struct smb_hdr *smb) | |
872 | { | |
873 | return le16_to_cpu(smb->Mid); | |
874 | } | |
875 | ||
876 | static inline bool | |
877 | compare_mid(__u16 mid, const struct smb_hdr *smb) | |
878 | { | |
879 | return mid == le16_to_cpu(smb->Mid); | |
880 | } | |
881 | ||
24985c53 PS |
882 | /* |
883 | * When the server supports very large reads and writes via POSIX extensions, | |
884 | * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not | |
885 | * including the RFC1001 length. | |
886 | * | |
887 | * Note that this might make for "interesting" allocation problems during | |
888 | * writeback however as we have to allocate an array of pointers for the | |
ea1754a0 | 889 | * pages. A 16M write means ~32kb page array with PAGE_SIZE == 4096. |
24985c53 PS |
890 | * |
891 | * For reads, there is a similar problem as we need to allocate an array | |
892 | * of kvecs to handle the receive, though that should only need to be done | |
893 | * once. | |
894 | */ | |
895 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) | |
896 | #define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) | |
897 | ||
898 | /* | |
899 | * When the server doesn't allow large posix writes, only allow a rsize/wsize | |
900 | * of 2^17-1 minus the size of the call header. That allows for a read or | |
901 | * write up to the maximum size described by RFC1002. | |
902 | */ | |
903 | #define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) | |
904 | #define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) | |
905 | ||
24985c53 PS |
906 | #define CIFS_DEFAULT_IOSIZE (1024 * 1024) |
907 | ||
908 | /* | |
909 | * Windows only supports a max of 60kb reads and 65535 byte writes. Default to | |
910 | * those values when posix extensions aren't in force. In actuality here, we | |
911 | * use 65536 to allow for a write that is a multiple of 4k. Most servers seem | |
912 | * to be ok with the extra byte even though Windows doesn't send writes that | |
913 | * are that large. | |
914 | * | |
915 | * Citation: | |
916 | * | |
cba22b1c | 917 | * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx |
24985c53 PS |
918 | */ |
919 | #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) | |
920 | #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) | |
921 | ||
f1d0c998 RL |
922 | /* |
923 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
924 | * when CONFIG_NET_NS isn't set. | |
925 | */ | |
926 | ||
927 | #ifdef CONFIG_NET_NS | |
928 | ||
929 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
930 | { | |
931 | return srv->net; | |
932 | } | |
933 | ||
934 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
935 | { | |
936 | srv->net = net; | |
937 | } | |
938 | ||
939 | #else | |
940 | ||
941 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
942 | { | |
943 | return &init_net; | |
944 | } | |
945 | ||
946 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
947 | { | |
948 | } | |
949 | ||
950 | #endif | |
951 | ||
b6f0dd5d | 952 | struct cifs_server_iface { |
aa45dadd SP |
953 | struct list_head iface_head; |
954 | struct kref refcount; | |
b6f0dd5d AA |
955 | size_t speed; |
956 | unsigned int rdma_capable : 1; | |
957 | unsigned int rss_capable : 1; | |
aa45dadd | 958 | unsigned int is_active : 1; /* unset if non existent */ |
b6f0dd5d AA |
959 | struct sockaddr_storage sockaddr; |
960 | }; | |
961 | ||
aa45dadd SP |
962 | /* release iface when last ref is dropped */ |
963 | static inline void | |
964 | release_iface(struct kref *ref) | |
965 | { | |
966 | struct cifs_server_iface *iface = container_of(ref, | |
967 | struct cifs_server_iface, | |
968 | refcount); | |
969 | list_del_init(&iface->iface_head); | |
970 | kfree(iface); | |
971 | } | |
972 | ||
973 | /* | |
974 | * compare two interfaces a and b | |
975 | * return 0 if everything matches. | |
976 | * return 1 if a has higher link speed, or rdma capable, or rss capable | |
977 | * return -1 otherwise. | |
978 | */ | |
979 | static inline int | |
980 | iface_cmp(struct cifs_server_iface *a, struct cifs_server_iface *b) | |
981 | { | |
982 | int cmp_ret = 0; | |
983 | ||
984 | WARN_ON(!a || !b); | |
985 | if (a->speed == b->speed) { | |
986 | if (a->rdma_capable == b->rdma_capable) { | |
987 | if (a->rss_capable == b->rss_capable) { | |
988 | cmp_ret = memcmp(&a->sockaddr, &b->sockaddr, | |
989 | sizeof(a->sockaddr)); | |
990 | if (!cmp_ret) | |
991 | return 0; | |
992 | else if (cmp_ret > 0) | |
993 | return 1; | |
994 | else | |
995 | return -1; | |
996 | } else if (a->rss_capable > b->rss_capable) | |
997 | return 1; | |
998 | else | |
999 | return -1; | |
1000 | } else if (a->rdma_capable > b->rdma_capable) | |
1001 | return 1; | |
1002 | else | |
1003 | return -1; | |
1004 | } else if (a->speed > b->speed) | |
1005 | return 1; | |
1006 | else | |
1007 | return -1; | |
1008 | } | |
1009 | ||
bcc88801 | 1010 | struct cifs_chan { |
5752bf64 | 1011 | unsigned int in_reconnect : 1; /* if session setup in progress for this channel */ |
bcc88801 | 1012 | struct TCP_Server_Info *server; |
aa45dadd | 1013 | struct cifs_server_iface *iface; /* interface in use */ |
bcc88801 AA |
1014 | __u8 signkey[SMB3_SIGN_KEY_SIZE]; |
1015 | }; | |
1016 | ||
1da177e4 LT |
1017 | /* |
1018 | * Session structure. One of these for each uid session with a particular host | |
1019 | */ | |
96daf2b0 | 1020 | struct cifs_ses { |
14fbf50d | 1021 | struct list_head smb_ses_list; |
3663c904 | 1022 | struct list_head rlist; /* reconnect list */ |
3b795210 | 1023 | struct list_head tcon_list; |
b327a717 | 1024 | struct cifs_tcon *tcon_ipc; |
d7d7a66a | 1025 | spinlock_t ses_lock; /* protect anything here that is not protected */ |
d7b619cf | 1026 | struct mutex session_mutex; |
1da177e4 | 1027 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 1028 | int ses_count; /* reference counter */ |
dd3cd870 | 1029 | enum ses_status_enum ses_status; /* updates protected by cifs_tcp_ses_lock */ |
c19204cb | 1030 | unsigned int overrideSecFlg; /* if non-zero override global sec flags */ |
ad009ac9 SF |
1031 | char *serverOS; /* name of operating system underlying server */ |
1032 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 1033 | char *serverDomain; /* security realm of server */ |
286170aa | 1034 | __u64 Suid; /* remote smb uid */ |
64ed39dd EB |
1035 | kuid_t linux_uid; /* overriding owner of files on the mount */ |
1036 | kuid_t cred_uid; /* owner of credentials */ | |
29e20f9c | 1037 | unsigned int capabilities; |
b438fcf1 | 1038 | char ip_addr[INET6_ADDRSTRLEN + 1]; /* Max ipv6 (or v4) addr string len */ |
34c87901 SF |
1039 | char *user_name; /* must not be null except during init of sess |
1040 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
1041 | char *domainName; |
1042 | char *password; | |
de3a9e94 | 1043 | char workstation_name[CIFS_MAX_WORKSTATION_LEN]; |
5d0d2882 | 1044 | struct session_key auth_key; |
d3686d54 | 1045 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
28e11bd8 JL |
1046 | enum securityEnum sectype; /* what security flavor was specified? */ |
1047 | bool sign; /* is signing required? */ | |
39566443 | 1048 | bool domainAuto:1; |
5478f9ba | 1049 | __u16 session_flags; |
373512ec | 1050 | __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; |
45a4546c SP |
1051 | __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE]; |
1052 | __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE]; | |
8bd68c6e | 1053 | __u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE]; |
b6f0dd5d AA |
1054 | |
1055 | /* | |
1056 | * Network interfaces available on the server this session is | |
1057 | * connected to. | |
1058 | * | |
1059 | * Other channels can be opened by connecting and binding this | |
1060 | * session to interfaces from this list. | |
1061 | * | |
1062 | * iface_lock should be taken when accessing any of these fields | |
1063 | */ | |
1064 | spinlock_t iface_lock; | |
724244cd | 1065 | /* ========= begin: protected by iface_lock ======== */ |
aa45dadd | 1066 | struct list_head iface_list; |
b6f0dd5d AA |
1067 | size_t iface_count; |
1068 | unsigned long iface_last_update; /* jiffies */ | |
724244cd | 1069 | /* ========= end: protected by iface_lock ======== */ |
bcc88801 | 1070 | |
724244cd SP |
1071 | spinlock_t chan_lock; |
1072 | /* ========= begin: protected by chan_lock ======== */ | |
bcc88801 | 1073 | #define CIFS_MAX_CHANNELS 16 |
d1a931ce SP |
1074 | #define CIFS_ALL_CHANNELS_SET(ses) \ |
1075 | ((1UL << (ses)->chan_count) - 1) | |
5752bf64 SP |
1076 | #define CIFS_ALL_CHANS_GOOD(ses) \ |
1077 | (!(ses)->chans_need_reconnect) | |
d1a931ce SP |
1078 | #define CIFS_ALL_CHANS_NEED_RECONNECT(ses) \ |
1079 | ((ses)->chans_need_reconnect == CIFS_ALL_CHANNELS_SET(ses)) | |
183eea2e SP |
1080 | #define CIFS_SET_ALL_CHANS_NEED_RECONNECT(ses) \ |
1081 | ((ses)->chans_need_reconnect = CIFS_ALL_CHANNELS_SET(ses)) | |
d1a931ce SP |
1082 | #define CIFS_CHAN_NEEDS_RECONNECT(ses, index) \ |
1083 | test_bit((index), &(ses)->chans_need_reconnect) | |
5752bf64 SP |
1084 | #define CIFS_CHAN_IN_RECONNECT(ses, index) \ |
1085 | ((ses)->chans[(index)].in_reconnect) | |
d1a931ce | 1086 | |
bcc88801 AA |
1087 | struct cifs_chan chans[CIFS_MAX_CHANNELS]; |
1088 | size_t chan_count; | |
1089 | size_t chan_max; | |
1090 | atomic_t chan_seq; /* round robin state */ | |
d1a931ce SP |
1091 | |
1092 | /* | |
1093 | * chans_need_reconnect is a bitmap indicating which of the channels | |
1094 | * under this smb session needs to be reconnected. | |
1095 | * If not multichannel session, only one bit will be used. | |
f486ef8e SP |
1096 | * |
1097 | * We will ask for sess and tcon reconnection only if all the | |
1098 | * channels are marked for needing reconnection. This will | |
1099 | * enable the sessions on top to continue to live till any | |
1100 | * of the channels below are active. | |
d1a931ce SP |
1101 | */ |
1102 | unsigned long chans_need_reconnect; | |
724244cd | 1103 | /* ========= end: protected by chan_lock ======== */ |
6916881f | 1104 | struct cifs_ses *dfs_root_ses; |
1da177e4 | 1105 | }; |
233839b1 | 1106 | |
29e20f9c PS |
1107 | static inline bool |
1108 | cap_unix(struct cifs_ses *ses) | |
1109 | { | |
1110 | return ses->server->vals->cap_unix & ses->capabilities; | |
1111 | } | |
1112 | ||
f695b289 RS |
1113 | /* |
1114 | * common struct for holding inode info when searching for or updating an | |
1115 | * inode with new info | |
1116 | */ | |
1117 | ||
1118 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
1119 | #define CIFS_FATTR_DELETE_PENDING 0x2 | |
1120 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
1121 | #define CIFS_FATTR_INO_COLLISION 0x8 | |
1122 | #define CIFS_FATTR_UNKNOWN_NLINK 0x10 | |
1123 | #define CIFS_FATTR_FAKE_ROOT_INO 0x20 | |
1124 | ||
1125 | struct cifs_fattr { | |
1126 | u32 cf_flags; | |
1127 | u32 cf_cifsattrs; | |
1128 | u64 cf_uniqueid; | |
1129 | u64 cf_eof; | |
1130 | u64 cf_bytes; | |
1131 | u64 cf_createtime; | |
1132 | kuid_t cf_uid; | |
1133 | kgid_t cf_gid; | |
1134 | umode_t cf_mode; | |
1135 | dev_t cf_rdev; | |
1136 | unsigned int cf_nlink; | |
1137 | unsigned int cf_dtype; | |
1138 | struct timespec64 cf_atime; | |
1139 | struct timespec64 cf_mtime; | |
1140 | struct timespec64 cf_ctime; | |
1141 | u32 cf_cifstag; | |
76894f3e | 1142 | char *cf_symlink_target; |
f695b289 RS |
1143 | }; |
1144 | ||
1da177e4 LT |
1145 | /* |
1146 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 1147 | * session |
1da177e4 | 1148 | */ |
96daf2b0 | 1149 | struct cifs_tcon { |
f1987b44 JL |
1150 | struct list_head tcon_list; |
1151 | int tc_count; | |
53e0e11e | 1152 | struct list_head rlist; /* reconnect list */ |
d7d7a66a | 1153 | spinlock_t tc_lock; /* protect anything here that is not protected */ |
fae8044c SF |
1154 | atomic_t num_local_opens; /* num of all opens including disconnected */ |
1155 | atomic_t num_remote_opens; /* num of all network opens on server */ | |
1da177e4 | 1156 | struct list_head openFileList; |
3afca265 | 1157 | spinlock_t open_file_lock; /* protects list above */ |
96daf2b0 | 1158 | struct cifs_ses *ses; /* pointer to session associated with */ |
68e14569 | 1159 | char tree_name[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 1160 | char *nativeFileSystem; |
00e485b0 | 1161 | char *password; /* for share-level security */ |
faaf946a | 1162 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 | 1163 | __u16 Flags; /* optional support bits */ |
fdf59eb5 | 1164 | enum tid_status_enum status; |
1da177e4 | 1165 | atomic_t num_smbs_sent; |
44c58186 PS |
1166 | union { |
1167 | struct { | |
1168 | atomic_t num_writes; | |
1169 | atomic_t num_reads; | |
1170 | atomic_t num_flushes; | |
1171 | atomic_t num_oplock_brks; | |
1172 | atomic_t num_opens; | |
1173 | atomic_t num_closes; | |
1174 | atomic_t num_deletes; | |
1175 | atomic_t num_mkdirs; | |
1176 | atomic_t num_posixopens; | |
1177 | atomic_t num_posixmkdirs; | |
1178 | atomic_t num_rmdirs; | |
1179 | atomic_t num_renames; | |
1180 | atomic_t num_t2renames; | |
1181 | atomic_t num_ffirst; | |
1182 | atomic_t num_fnext; | |
1183 | atomic_t num_fclose; | |
1184 | atomic_t num_hardlinks; | |
1185 | atomic_t num_symlinks; | |
1186 | atomic_t num_locks; | |
1187 | atomic_t num_acl_get; | |
1188 | atomic_t num_acl_set; | |
1189 | } cifs_stats; | |
d60622eb PS |
1190 | struct { |
1191 | atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS]; | |
1192 | atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS]; | |
1193 | } smb2_stats; | |
44c58186 | 1194 | } stats; |
1da177e4 LT |
1195 | __u64 bytes_read; |
1196 | __u64 bytes_written; | |
3afca265 | 1197 | spinlock_t stat_lock; /* protects the two fields above */ |
1da177e4 | 1198 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 1199 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 1200 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
b327a717 AA |
1201 | bool ipc:1; /* set if connection to IPC$ share (always also pipe) */ |
1202 | bool pipe:1; /* set if connection to pipe share */ | |
1203 | bool print:1; /* set if connection to printer share */ | |
4b18f2a9 SF |
1204 | bool retry:1; |
1205 | bool nocase:1; | |
3d4ef9a1 | 1206 | bool nohandlecache:1; /* if strange server resource prob can turn off */ |
82e9367c | 1207 | bool nodelete:1; |
95b1cb90 | 1208 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 1209 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 1210 | for this mount even if server would support */ |
b326614e | 1211 | bool posix_extensions; /* if true SMB3.11 posix extensions enabled */ |
84210e91 | 1212 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 1213 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3d1a3745 | 1214 | bool broken_sparse_sup; /* if server or share does not support sparse */ |
3b795210 | 1215 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
96a988ff | 1216 | bool need_reopen_files:1; /* need to reopen tcon file handles */ |
592fafe6 | 1217 | bool use_resilient:1; /* use resilient instead of durable handles */ |
b618f001 | 1218 | bool use_persistent:1; /* use persistent instead of durable handles */ |
3e7a02d4 | 1219 | bool no_lease:1; /* Do not request leases on files or directories */ |
b7fd0fa0 | 1220 | bool use_witness:1; /* use witness protocol */ |
769ee6a4 | 1221 | __le32 capabilities; |
faaf946a PS |
1222 | __u32 share_flags; |
1223 | __u32 maximal_access; | |
1224 | __u32 vol_serial_number; | |
1225 | __le64 vol_create_time; | |
8b217fe7 | 1226 | __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ |
ca567eb2 | 1227 | __u32 handle_timeout; /* persistent and durable handle timeout in ms */ |
af6a12ea SF |
1228 | __u32 ss_flags; /* sector size flags */ |
1229 | __u32 perf_sector_size; /* best sector size for perf */ | |
de9f68df SF |
1230 | __u32 max_chunks; |
1231 | __u32 max_bytes_chunk; | |
1232 | __u32 max_bytes_copy; | |
d03382ce SJ |
1233 | #ifdef CONFIG_CIFS_FSCACHE |
1234 | u64 resource_id; /* server resource id */ | |
70431bfd | 1235 | struct fscache_volume *fscache; /* cookie for share */ |
d03382ce | 1236 | #endif |
233839b1 | 1237 | struct list_head pending_opens; /* list of incomplete opens */ |
aea6794e | 1238 | struct cached_fids *cfids; |
c18c842b | 1239 | /* BB add field for back pointer to sb struct(s)? */ |
54be1f6c | 1240 | #ifdef CONFIG_CIFS_DFS_UPCALL |
54be1f6c PA |
1241 | struct list_head ulist; /* cache update list */ |
1242 | #endif | |
6e1c1c08 | 1243 | struct delayed_work query_interfaces; /* query interfaces workqueue job */ |
1da177e4 LT |
1244 | }; |
1245 | ||
7ffec372 JL |
1246 | /* |
1247 | * This is a refcounted and timestamped container for a tcon pointer. The | |
1248 | * container holds a tcon reference. It is considered safe to free one of | |
1249 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
1250 | * "get" on the container. | |
1251 | */ | |
1252 | struct tcon_link { | |
b647c35f | 1253 | struct rb_node tl_rbnode; |
6d4a0832 | 1254 | kuid_t tl_uid; |
9d002df4 JL |
1255 | unsigned long tl_flags; |
1256 | #define TCON_LINK_MASTER 0 | |
1257 | #define TCON_LINK_PENDING 1 | |
1258 | #define TCON_LINK_IN_TREE 2 | |
1259 | unsigned long tl_time; | |
1260 | atomic_t tl_count; | |
96daf2b0 | 1261 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
1262 | }; |
1263 | ||
9d002df4 | 1264 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
b2c96de7 | 1265 | extern void smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst); |
7ffec372 | 1266 | |
96daf2b0 | 1267 | static inline struct cifs_tcon * |
7ffec372 JL |
1268 | tlink_tcon(struct tcon_link *tlink) |
1269 | { | |
9d002df4 | 1270 | return tlink->tl_tcon; |
7ffec372 JL |
1271 | } |
1272 | ||
8ddecf5f AA |
1273 | static inline struct tcon_link * |
1274 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) | |
1275 | { | |
1276 | return cifs_sb->master_tlink; | |
1277 | } | |
1278 | ||
9d002df4 | 1279 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 1280 | |
13cfb733 JL |
1281 | static inline struct tcon_link * |
1282 | cifs_get_tlink(struct tcon_link *tlink) | |
1283 | { | |
9d002df4 JL |
1284 | if (tlink && !IS_ERR(tlink)) |
1285 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
1286 | return tlink; |
1287 | } | |
1288 | ||
7ffec372 | 1289 | /* This function is always expected to succeed */ |
96daf2b0 | 1290 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 1291 | |
233839b1 PS |
1292 | #define CIFS_OPLOCK_NO_CHANGE 0xfe |
1293 | ||
1294 | struct cifs_pending_open { | |
1295 | struct list_head olist; | |
1296 | struct tcon_link *tlink; | |
1297 | __u8 lease_key[16]; | |
1298 | __u32 oplock; | |
1299 | }; | |
1300 | ||
c3f207ab RS |
1301 | struct cifs_deferred_close { |
1302 | struct list_head dlist; | |
1303 | struct tcon_link *tlink; | |
1304 | __u16 netfid; | |
1305 | __u64 persistent_fid; | |
1306 | __u64 volatile_fid; | |
1307 | }; | |
1308 | ||
1da177e4 | 1309 | /* |
7ee1af76 JA |
1310 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
1311 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
1312 | */ |
1313 | struct cifsLockInfo { | |
7ee1af76 | 1314 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
1315 | struct list_head blist; /* pointer to locks blocked on this */ |
1316 | wait_queue_head_t block_q; | |
7ee1af76 JA |
1317 | __u64 offset; |
1318 | __u64 length; | |
03776f45 | 1319 | __u32 pid; |
9645759c RS |
1320 | __u16 type; |
1321 | __u16 flags; | |
1da177e4 LT |
1322 | }; |
1323 | ||
1324 | /* | |
1325 | * One of these for each open instance of a file | |
1326 | */ | |
1327 | struct cifs_search_info { | |
1328 | loff_t index_of_last_entry; | |
1329 | __u16 entries_in_buffer; | |
1330 | __u16 info_level; | |
1331 | __u32 resume_key; | |
d38d8c74 SF |
1332 | char *ntwrk_buf_start; |
1333 | char *srch_entries_start; | |
0752f152 | 1334 | char *last_entry; |
eaf35b1e | 1335 | const char *presume_name; |
1da177e4 | 1336 | unsigned int resume_name_len; |
4b18f2a9 SF |
1337 | bool endOfSearch:1; |
1338 | bool emptyDir:1; | |
1339 | bool unicode:1; | |
1340 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
1341 | }; |
1342 | ||
d0959b08 | 1343 | #define ACL_NO_MODE ((umode_t)(-1)) |
226730b4 PS |
1344 | struct cifs_open_parms { |
1345 | struct cifs_tcon *tcon; | |
1346 | struct cifs_sb_info *cifs_sb; | |
1347 | int disposition; | |
1348 | int desired_access; | |
1349 | int create_options; | |
1350 | const char *path; | |
1351 | struct cifs_fid *fid; | |
ce558b0e | 1352 | umode_t mode; |
9cbc0b73 | 1353 | bool reconnect:1; |
226730b4 PS |
1354 | }; |
1355 | ||
4b4de76e PS |
1356 | struct cifs_fid { |
1357 | __u16 netfid; | |
f0df737e PS |
1358 | __u64 persistent_fid; /* persist file id for smb2 */ |
1359 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
b8c32dbb | 1360 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ |
b56eae4d | 1361 | __u8 create_guid[16]; |
86f740f2 | 1362 | __u32 access; |
233839b1 | 1363 | struct cifs_pending_open *pending_open; |
42873b0a | 1364 | unsigned int epoch; |
dfe33f9a SF |
1365 | #ifdef CONFIG_CIFS_DEBUG2 |
1366 | __u64 mid; | |
1367 | #endif /* CIFS_DEBUG2 */ | |
42873b0a | 1368 | bool purge_cache; |
4b4de76e PS |
1369 | }; |
1370 | ||
f45d3416 PS |
1371 | struct cifs_fid_locks { |
1372 | struct list_head llist; | |
1373 | struct cifsFileInfo *cfile; /* fid that owns locks */ | |
1374 | struct list_head locks; /* locks held by fid above */ | |
1375 | }; | |
1376 | ||
1da177e4 | 1377 | struct cifsFileInfo { |
3afca265 | 1378 | /* following two lists are protected by tcon->open_file_lock */ |
1da177e4 LT |
1379 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
1380 | struct list_head flist; /* next fid (file instance) for this inode */ | |
3afca265 | 1381 | /* lock list below protected by cifsi->lock_sem */ |
f45d3416 | 1382 | struct cifs_fid_locks *llist; /* brlocks held by this fid */ |
fef59fd7 | 1383 | kuid_t uid; /* allows finding which FileInfo structure */ |
1da177e4 | 1384 | __u32 pid; /* process id who opened file */ |
4b4de76e | 1385 | struct cifs_fid fid; /* file id from remote */ |
f2cca6a7 | 1386 | struct list_head rlist; /* reconnect list */ |
c19204cb | 1387 | /* BB add lock scope info here if needed */ |
1da177e4 | 1388 | /* lock scope id (0 if none) */ |
a5e18bc3 | 1389 | struct dentry *dentry; |
13cfb733 | 1390 | struct tcon_link *tlink; |
3afca265 | 1391 | unsigned int f_flags; |
4b18f2a9 | 1392 | bool invalidHandle:1; /* file closed via session abend */ |
4e8aea30 | 1393 | bool swapfile:1; |
3bc303c2 | 1394 | bool oplock_break_cancelled:1; |
9bd45408 PS |
1395 | unsigned int oplock_epoch; /* epoch from the lease break */ |
1396 | __u32 oplock_level; /* oplock/lease level from the lease break */ | |
3afca265 SF |
1397 | int count; |
1398 | spinlock_t file_info_lock; /* protects four flag/count fields above */ | |
a6ce4932 | 1399 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 1400 | struct cifs_search_info srch_inf; |
9b646972 | 1401 | struct work_struct oplock_break; /* work for oplock breaks */ |
32546a95 | 1402 | struct work_struct put; /* work for the final part of _put */ |
c3f207ab | 1403 | struct delayed_work deferred; |
860b69a9 | 1404 | bool deferred_close_scheduled; /* Flag to indicate close is scheduled */ |
76894f3e | 1405 | char *symlink_target; |
1da177e4 LT |
1406 | }; |
1407 | ||
fa2989f4 PS |
1408 | struct cifs_io_parms { |
1409 | __u16 netfid; | |
09a4707e PS |
1410 | __u64 persistent_fid; /* persist file id for smb2 */ |
1411 | __u64 volatile_fid; /* volatile file id for smb2 */ | |
fa2989f4 PS |
1412 | __u32 pid; |
1413 | __u64 offset; | |
1414 | unsigned int length; | |
96daf2b0 | 1415 | struct cifs_tcon *tcon; |
352d96f3 | 1416 | struct TCP_Server_Info *server; |
fa2989f4 PS |
1417 | }; |
1418 | ||
ccf7f408 PS |
1419 | struct cifs_aio_ctx { |
1420 | struct kref refcount; | |
1421 | struct list_head list; | |
1422 | struct mutex aio_mutex; | |
1423 | struct completion done; | |
1424 | struct iov_iter iter; | |
1425 | struct kiocb *iocb; | |
1426 | struct cifsFileInfo *cfile; | |
1427 | struct bio_vec *bv; | |
c610c4b6 | 1428 | loff_t pos; |
ccf7f408 PS |
1429 | unsigned int npages; |
1430 | ssize_t rc; | |
1431 | unsigned int len; | |
1432 | unsigned int total_len; | |
1433 | bool should_dirty; | |
6e6e2b86 LL |
1434 | /* |
1435 | * Indicates if this aio_ctx is for direct_io, | |
1436 | * If yes, iter is a copy of the user passed iov_iter | |
1437 | */ | |
1438 | bool direct_io; | |
ccf7f408 PS |
1439 | }; |
1440 | ||
09a4707e PS |
1441 | /* asynchronous read support */ |
1442 | struct cifs_readdata { | |
1443 | struct kref refcount; | |
1444 | struct list_head list; | |
1445 | struct completion done; | |
1446 | struct cifsFileInfo *cfile; | |
1447 | struct address_space *mapping; | |
6685c5e2 | 1448 | struct cifs_aio_ctx *ctx; |
09a4707e PS |
1449 | __u64 offset; |
1450 | unsigned int bytes; | |
34a54d61 | 1451 | unsigned int got_bytes; |
09a4707e PS |
1452 | pid_t pid; |
1453 | int result; | |
09a4707e | 1454 | struct work_struct work; |
8321fec4 JL |
1455 | int (*read_into_pages)(struct TCP_Server_Info *server, |
1456 | struct cifs_readdata *rdata, | |
1457 | unsigned int len); | |
d70b9104 PS |
1458 | int (*copy_into_pages)(struct TCP_Server_Info *server, |
1459 | struct cifs_readdata *rdata, | |
1460 | struct iov_iter *iter); | |
738f9de5 | 1461 | struct kvec iov[2]; |
352d96f3 | 1462 | struct TCP_Server_Info *server; |
74dcf418 LL |
1463 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1464 | struct smbd_mr *mr; | |
1465 | #endif | |
8321fec4 | 1466 | unsigned int pagesz; |
57a929a6 | 1467 | unsigned int page_offset; |
8321fec4 | 1468 | unsigned int tailsz; |
335b7b62 | 1469 | struct cifs_credits credits; |
c5fab6f4 | 1470 | unsigned int nr_pages; |
f9f5aca1 | 1471 | struct page **pages; |
09a4707e PS |
1472 | }; |
1473 | ||
33319141 PS |
1474 | /* asynchronous write support */ |
1475 | struct cifs_writedata { | |
1476 | struct kref refcount; | |
1477 | struct list_head list; | |
1478 | struct completion done; | |
1479 | enum writeback_sync_modes sync_mode; | |
1480 | struct work_struct work; | |
1481 | struct cifsFileInfo *cfile; | |
c610c4b6 | 1482 | struct cifs_aio_ctx *ctx; |
33319141 PS |
1483 | __u64 offset; |
1484 | pid_t pid; | |
1485 | unsigned int bytes; | |
1486 | int result; | |
352d96f3 | 1487 | struct TCP_Server_Info *server; |
db223a59 LL |
1488 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1489 | struct smbd_mr *mr; | |
1490 | #endif | |
eddb079d | 1491 | unsigned int pagesz; |
57a929a6 | 1492 | unsigned int page_offset; |
eddb079d | 1493 | unsigned int tailsz; |
335b7b62 | 1494 | struct cifs_credits credits; |
33319141 | 1495 | unsigned int nr_pages; |
8e7360f6 | 1496 | struct page **pages; |
33319141 PS |
1497 | }; |
1498 | ||
5f6dbc9e JL |
1499 | /* |
1500 | * Take a reference on the file private data. Must be called with | |
3afca265 | 1501 | * cfile->file_info_lock held. |
5f6dbc9e | 1502 | */ |
764a1b1a JL |
1503 | static inline void |
1504 | cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 1505 | { |
5f6dbc9e | 1506 | ++cifs_file->count; |
6ab409b5 DK |
1507 | } |
1508 | ||
764a1b1a | 1509 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file); |
32546a95 RS |
1510 | void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr, |
1511 | bool offload); | |
b33879aa | 1512 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 1513 | |
18cceb6a PS |
1514 | #define CIFS_CACHE_READ_FLG 1 |
1515 | #define CIFS_CACHE_HANDLE_FLG 2 | |
42873b0a | 1516 | #define CIFS_CACHE_RH_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_HANDLE_FLG) |
18cceb6a | 1517 | #define CIFS_CACHE_WRITE_FLG 4 |
42873b0a PS |
1518 | #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) |
1519 | #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) | |
18cceb6a | 1520 | |
874c8ca1 | 1521 | #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 | 1522 | #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) |
874c8ca1 | 1523 | #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 | 1524 | |
1da177e4 LT |
1525 | /* |
1526 | * One of these for each file inode | |
1527 | */ | |
1528 | ||
1529 | struct cifsInodeInfo { | |
874c8ca1 | 1530 | struct netfs_inode netfs; /* Netfslib context and vfs inode */ |
d59dad2b | 1531 | bool can_cache_brlcks; |
f45d3416 | 1532 | struct list_head llist; /* locks helb by this inode */ |
d46b0da7 DW |
1533 | /* |
1534 | * NOTE: Some code paths call down_read(lock_sem) twice, so | |
a03f507d | 1535 | * we must always use cifs_down_write() instead of down_write() |
d46b0da7 DW |
1536 | * for this semaphore to avoid deadlocks. |
1537 | */ | |
1b4b55a1 | 1538 | struct rw_semaphore lock_sem; /* protect the fields above */ |
d38d8c74 | 1539 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 1540 | struct list_head openFileList; |
487317c9 | 1541 | spinlock_t open_file_lock; /* protects openFileList */ |
1da177e4 | 1542 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
18cceb6a | 1543 | unsigned int oplock; /* oplock/lease level we have */ |
42873b0a | 1544 | unsigned int epoch; /* used to track lease state changes */ |
c11f1df5 SP |
1545 | #define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */ |
1546 | #define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */ | |
9bd45408 | 1547 | #define CIFS_INODE_FLAG_UNUSED (2) /* Unused flag */ |
aff8d5ca JL |
1548 | #define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */ |
1549 | #define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */ | |
4f73c7d3 | 1550 | #define CIFS_INO_LOCK (5) /* lock bit for synchronization */ |
c3f207ab | 1551 | #define CIFS_INO_MODIFIED_ATTR (6) /* Indicate change in mtime/ctime */ |
35866f3f | 1552 | #define CIFS_INO_CLOSE_ON_LOCK (7) /* Not to defer the close when lock is set */ |
aff8d5ca | 1553 | unsigned long flags; |
c11f1df5 SP |
1554 | spinlock_t writers_lock; |
1555 | unsigned int writers; /* Number of writers on this inode */ | |
aae62fdb | 1556 | unsigned long time; /* jiffies of last update of inode */ |
597b027f | 1557 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 1558 | u64 uniqueid; /* server inode number */ |
20054bd6 | 1559 | u64 createtime; /* creation time on server */ |
b8c32dbb | 1560 | __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ |
c3f207ab RS |
1561 | struct list_head deferred_closes; /* list of deferred closes */ |
1562 | spinlock_t deferred_lock; /* protection on deferred list */ | |
0ab95c25 | 1563 | bool lease_granted; /* Flag to indicate whether lease or oplock is granted. */ |
76894f3e | 1564 | char *symlink_target; |
1da177e4 LT |
1565 | }; |
1566 | ||
1567 | static inline struct cifsInodeInfo * | |
1568 | CIFS_I(struct inode *inode) | |
1569 | { | |
874c8ca1 | 1570 | return container_of(inode, struct cifsInodeInfo, netfs.inode); |
1da177e4 LT |
1571 | } |
1572 | ||
1573 | static inline struct cifs_sb_info * | |
1574 | CIFS_SB(struct super_block *sb) | |
1575 | { | |
1576 | return sb->s_fs_info; | |
1577 | } | |
1578 | ||
7119e220 AV |
1579 | static inline struct cifs_sb_info * |
1580 | CIFS_FILE_SB(struct file *file) | |
1581 | { | |
1582 | return CIFS_SB(file_inode(file)->i_sb); | |
1583 | } | |
1584 | ||
ab2f218f | 1585 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
1586 | { |
1587 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
1588 | return '/'; | |
1589 | else | |
1590 | return '\\'; | |
1591 | } | |
1da177e4 | 1592 | |
f87d39d9 SF |
1593 | static inline void |
1594 | convert_delimiter(char *path, char delim) | |
1595 | { | |
1cc9bd68 | 1596 | char old_delim, *pos; |
f87d39d9 SF |
1597 | |
1598 | if (delim == '/') | |
1599 | old_delim = '\\'; | |
1600 | else | |
1601 | old_delim = '/'; | |
1602 | ||
1cc9bd68 SF |
1603 | pos = path; |
1604 | while ((pos = strchr(pos, old_delim))) | |
1605 | *pos = delim; | |
f87d39d9 SF |
1606 | } |
1607 | ||
a4544347 SF |
1608 | #define cifs_stats_inc atomic_inc |
1609 | ||
96daf2b0 | 1610 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
1611 | unsigned int bytes) |
1612 | { | |
1613 | if (bytes) { | |
1614 | spin_lock(&tcon->stat_lock); | |
1615 | tcon->bytes_written += bytes; | |
1616 | spin_unlock(&tcon->stat_lock); | |
1617 | } | |
1618 | } | |
1619 | ||
96daf2b0 | 1620 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
1621 | unsigned int bytes) |
1622 | { | |
1623 | spin_lock(&tcon->stat_lock); | |
1624 | tcon->bytes_read += bytes; | |
1625 | spin_unlock(&tcon->stat_lock); | |
1626 | } | |
a4544347 | 1627 | |
2b84a36c JL |
1628 | |
1629 | /* | |
44d22d84 JL |
1630 | * This is the prototype for the mid receive function. This function is for |
1631 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
1632 | * just after the MID in struct smb_hdr). Note: | |
1633 | * | |
1634 | * - This will be called by cifsd, with no locks held. | |
1635 | * - The mid will still be on the pending_mid_q. | |
1636 | * - mid->resp_buf will point to the current buffer. | |
1637 | * | |
1638 | * Returns zero on a successful receive, or an error. The receive state in | |
1639 | * the TCP_Server_Info will also be updated. | |
1640 | */ | |
1641 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
1642 | struct mid_q_entry *mid); | |
1643 | ||
1644 | /* | |
1645 | * This is the prototype for the mid callback function. This is called once the | |
1646 | * mid has been received off of the socket. When creating one, take special | |
1647 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 1648 | * |
3c1105df JL |
1649 | * - it will be called by cifsd, with no locks held |
1650 | * - the mid will be removed from any lists | |
2b84a36c JL |
1651 | */ |
1652 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
1653 | ||
9b7c18a2 PS |
1654 | /* |
1655 | * This is the protopyte for mid handle function. This is called once the mid | |
1656 | * has been recognized after decryption of the message. | |
1657 | */ | |
1658 | typedef int (mid_handle_t)(struct TCP_Server_Info *server, | |
1659 | struct mid_q_entry *mid); | |
1660 | ||
1da177e4 LT |
1661 | /* one of these for every pending CIFS request to the server */ |
1662 | struct mid_q_entry { | |
1663 | struct list_head qhead; /* mids waiting on reply from this server */ | |
696e420b | 1664 | struct kref refcount; |
2dc7e1c0 | 1665 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 | 1666 | __u64 mid; /* multiplex id */ |
c781af7e | 1667 | __u16 credits; /* number of credits consumed by this mid */ |
86a7964b | 1668 | __u16 credits_received; /* number of credits from the response */ |
7c9421e1 | 1669 | __u32 pid; /* process id */ |
1da177e4 | 1670 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
1671 | unsigned long when_alloc; /* when mid was created */ |
1672 | #ifdef CONFIG_CIFS_STATS2 | |
1673 | unsigned long when_sent; /* time when smb send finished */ | |
1674 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
1675 | #endif | |
44d22d84 | 1676 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c | 1677 | mid_callback_t *callback; /* call completion callback */ |
9b7c18a2 | 1678 | mid_handle_t *handle; /* call handle mid callback */ |
2b84a36c | 1679 | void *callback_data; /* general purpose pointer for callback */ |
f1f27ad7 | 1680 | struct task_struct *creator; |
d4e4854f | 1681 | void *resp_buf; /* pointer to received SMB header */ |
e19b2bc0 | 1682 | unsigned int resp_buf_size; |
7c9421e1 | 1683 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
38bd4906 | 1684 | unsigned int mid_flags; |
7c9421e1 | 1685 | __le16 command; /* smb command code */ |
8a26f0f7 | 1686 | unsigned int optype; /* operation type */ |
7c9421e1 | 1687 | bool large_buf:1; /* if valid response, is pointer to large buf */ |
4b18f2a9 SF |
1688 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
1689 | bool multiEnd:1; /* both received */ | |
4326ed2f | 1690 | bool decrypted:1; /* decrypted entry */ |
1da177e4 LT |
1691 | }; |
1692 | ||
38bd4906 SP |
1693 | struct close_cancelled_open { |
1694 | struct cifs_fid fid; | |
1695 | struct cifs_tcon *tcon; | |
1696 | struct work_struct work; | |
87bc2376 RS |
1697 | __u64 mid; |
1698 | __u16 cmd; | |
38bd4906 SP |
1699 | }; |
1700 | ||
789e6661 SF |
1701 | /* Make code in transport.c a little cleaner by moving |
1702 | update of optional stats into function below */ | |
789e6661 SF |
1703 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) |
1704 | { | |
1705 | atomic_inc(&server->in_send); | |
1706 | } | |
1707 | ||
1708 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
1709 | { | |
1710 | atomic_dec(&server->in_send); | |
1711 | } | |
1712 | ||
1713 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
1714 | { | |
1715 | atomic_inc(&server->num_waiters); | |
1716 | } | |
1717 | ||
1718 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
1719 | { | |
1720 | atomic_dec(&server->num_waiters); | |
1721 | } | |
1722 | ||
1ae9a5a5 | 1723 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 SF |
1724 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1725 | { | |
1726 | mid->when_sent = jiffies; | |
1727 | } | |
1728 | #else | |
789e6661 SF |
1729 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) |
1730 | { | |
1731 | } | |
1732 | #endif | |
1da177e4 | 1733 | |
ff5dbd9e SF |
1734 | /* for pending dnotify requests */ |
1735 | struct dir_notify_req { | |
13cd4b7f SF |
1736 | struct list_head lhead; |
1737 | __le16 Pid; | |
1738 | __le16 PidHigh; | |
1739 | __u16 Mid; | |
1740 | __u16 Tid; | |
1741 | __u16 Uid; | |
1742 | __u16 netfid; | |
1743 | __u32 filter; /* CompletionFilter (for multishot) */ | |
1744 | int multishot; | |
1745 | struct file *pfile; | |
ff5dbd9e SF |
1746 | }; |
1747 | ||
366781c1 SF |
1748 | struct dfs_info3_param { |
1749 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 1750 | int path_consumed; |
366781c1 SF |
1751 | int server_type; |
1752 | int ref_flag; | |
1753 | char *path_name; | |
1754 | char *node_name; | |
e7b602f4 | 1755 | int ttl; |
366781c1 SF |
1756 | }; |
1757 | ||
9e992755 RS |
1758 | struct file_list { |
1759 | struct list_head list; | |
1760 | struct cifsFileInfo *cfile; | |
1761 | }; | |
1762 | ||
a73a26d9 PA |
1763 | struct cifs_mount_ctx { |
1764 | struct cifs_sb_info *cifs_sb; | |
1765 | struct smb3_fs_context *fs_ctx; | |
1766 | unsigned int xid; | |
1767 | struct TCP_Server_Info *server; | |
1768 | struct cifs_ses *ses; | |
1769 | struct cifs_tcon *tcon; | |
a73a26d9 PA |
1770 | struct cifs_ses *root_ses; |
1771 | uuid_t mount_id; | |
1772 | char *origin_fullpath, *leaf_fullpath; | |
a73a26d9 PA |
1773 | }; |
1774 | ||
366781c1 SF |
1775 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
1776 | { | |
1777 | if (param) { | |
1778 | kfree(param->path_name); | |
1779 | kfree(param->node_name); | |
366781c1 SF |
1780 | } |
1781 | } | |
1782 | ||
1783 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
1784 | int number_of_items) | |
1785 | { | |
1786 | int i; | |
c19204cb | 1787 | |
366781c1 SF |
1788 | if ((number_of_items == 0) || (param == NULL)) |
1789 | return; | |
1790 | for (i = 0; i < number_of_items; i++) { | |
1791 | kfree(param[i].path_name); | |
1792 | kfree(param[i].node_name); | |
1793 | } | |
1794 | kfree(param); | |
1795 | } | |
1796 | ||
9a66396f PS |
1797 | static inline bool is_interrupt_error(int error) |
1798 | { | |
1799 | switch (error) { | |
1800 | case -EINTR: | |
1801 | case -ERESTARTSYS: | |
1802 | case -ERESTARTNOHAND: | |
1803 | case -ERESTARTNOINTR: | |
1804 | return true; | |
1805 | } | |
1806 | return false; | |
1807 | } | |
1808 | ||
1809 | static inline bool is_retryable_error(int error) | |
1810 | { | |
1811 | if (is_interrupt_error(error) || error == -EAGAIN) | |
1812 | return true; | |
1813 | return false; | |
1814 | } | |
1815 | ||
86f740f2 AA |
1816 | |
1817 | /* cifs_get_writable_file() flags */ | |
1818 | #define FIND_WR_ANY 0 | |
1819 | #define FIND_WR_FSUID_ONLY 1 | |
1820 | #define FIND_WR_WITH_DELETE 2 | |
1821 | ||
1da177e4 LT |
1822 | #define MID_FREE 0 |
1823 | #define MID_REQUEST_ALLOCATED 1 | |
1824 | #define MID_REQUEST_SUBMITTED 2 | |
1825 | #define MID_RESPONSE_RECEIVED 4 | |
1826 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 1827 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 1828 | #define MID_SHUTDOWN 0x20 |
ec637e3f | 1829 | |
38bd4906 SP |
1830 | /* Flags */ |
1831 | #define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ | |
ddf83afb | 1832 | #define MID_DELETED 2 /* Mid has been dequeued/deleted */ |
38bd4906 | 1833 | |
ec637e3f SF |
1834 | /* Types of response buffer returned from SendReceive2 */ |
1835 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
1836 | #define CIFS_SMALL_BUFFER 1 | |
1837 | #define CIFS_LARGE_BUFFER 2 | |
1838 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 1839 | |
133672ef | 1840 | /* Type of Request to SendReceive2 */ |
7749981e | 1841 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
392e1c5d | 1842 | #define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */ |
7749981e | 1843 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ |
133672ef SF |
1844 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1845 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
392e1c5d | 1846 | #define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */ |
133672ef | 1847 | |
a891f0f8 | 1848 | /* Type of request operation */ |
04ad69c3 PA |
1849 | #define CIFS_ECHO_OP 0x080 /* echo request */ |
1850 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
1851 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ | |
1852 | #define CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */ | |
0f56db83 | 1853 | /* Lower bitmask values are reserved by others below. */ |
04ad69c3 PA |
1854 | #define CIFS_SESS_OP 0x2000 /* session setup request */ |
1855 | #define CIFS_OP_MASK 0x2780 /* mask request type */ | |
7fb8986e | 1856 | |
04ad69c3 PA |
1857 | #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ |
1858 | #define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ | |
1859 | #define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */ | |
a891f0f8 | 1860 | |
3979877e SF |
1861 | /* Security Flags: indicate type of session setup needed */ |
1862 | #define CIFSSEC_MAY_SIGN 0x00001 | |
3979877e SF |
1863 | #define CIFSSEC_MAY_NTLMV2 0x00004 |
1864 | #define CIFSSEC_MAY_KRB5 0x00008 | |
3979877e | 1865 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ |
ac683924 | 1866 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1867 | |
1868 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1869 | /* note that only one of the following can be set so the | |
1870 | result of setting MUST flags more than once will be to | |
1871 | require use of the stronger protocol */ | |
3979877e SF |
1872 | #define CIFSSEC_MUST_NTLMV2 0x04004 |
1873 | #define CIFSSEC_MUST_KRB5 0x08008 | |
0d3a01fa | 1874 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1875 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1876 | #else |
ac683924 | 1877 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1878 | #endif /* UPCALL */ |
3979877e | 1879 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ |
ac683924 | 1880 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1881 | |
896a8fc2 | 1882 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) |
76a3c92e RS |
1883 | #define CIFSSEC_MAX (CIFSSEC_MUST_NTLMV2) |
1884 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) | |
1da177e4 LT |
1885 | /* |
1886 | ***************************************************************** | |
1887 | * All constants go here | |
1888 | ***************************************************************** | |
1889 | */ | |
1890 | ||
1891 | #define UID_HASH (16) | |
1892 | ||
1893 | /* | |
1894 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1895 | * following to be declared. | |
1896 | */ | |
1897 | ||
1898 | /**************************************************************************** | |
d7d7a66a SP |
1899 | * Here are all the locks (spinlock, mutex, semaphore) in cifs.ko, arranged according |
1900 | * to the locking order. i.e. if two locks are to be held together, the lock that | |
1901 | * appears higher in this list needs to be taken before the other. | |
1da177e4 | 1902 | * |
d7d7a66a SP |
1903 | * If you hold a lock that is lower in this list, and you need to take a higher lock |
1904 | * (or if you think that one of the functions that you're calling may need to), first | |
1905 | * drop the lock you hold, pick up the higher lock, then the lower one. This will | |
1906 | * ensure that locks are picked up only in one direction in the below table | |
1907 | * (top to bottom). | |
1da177e4 | 1908 | * |
d7d7a66a SP |
1909 | * Also, if you expect a function to be called with a lock held, explicitly document |
1910 | * this in the comments on top of your function definition. | |
487317c9 | 1911 | * |
d7d7a66a SP |
1912 | * And also, try to keep the critical sections (lock hold time) to be as minimal as |
1913 | * possible. Blocking / calling other functions with a lock held always increase | |
1914 | * the risk of a possible deadlock. | |
1da177e4 | 1915 | * |
d7d7a66a SP |
1916 | * Following this rule will avoid unnecessary deadlocks, which can get really hard to |
1917 | * debug. Also, any new lock that you introduce, please add to this list in the correct | |
1918 | * order. | |
1919 | * | |
1920 | * Please populate this list whenever you introduce new locks in your changes. Or in | |
1921 | * case I've missed some existing locks. Please ensure that it's added in the list | |
1922 | * based on the locking order expected. | |
1923 | * | |
1924 | * ===================================================================================== | |
1925 | * Lock Protects Initialization fn | |
1926 | * ===================================================================================== | |
1927 | * vol_list_lock | |
1928 | * vol_info->ctx_lock vol_info->ctx | |
1929 | * cifs_sb_info->tlink_tree_lock cifs_sb_info->tlink_tree cifs_setup_cifs_sb | |
1930 | * TCP_Server_Info-> TCP_Server_Info cifs_get_tcp_session | |
1931 | * reconnect_mutex | |
1932 | * TCP_Server_Info->srv_mutex TCP_Server_Info cifs_get_tcp_session | |
1933 | * cifs_ses->session_mutex cifs_ses sesInfoAlloc | |
1934 | * cifs_tcon | |
1935 | * cifs_tcon->open_file_lock cifs_tcon->openFileList tconInfoAlloc | |
1936 | * cifs_tcon->pending_opens | |
1937 | * cifs_tcon->stat_lock cifs_tcon->bytes_read tconInfoAlloc | |
1938 | * cifs_tcon->bytes_written | |
1939 | * cifs_tcp_ses_lock cifs_tcp_ses_list sesInfoAlloc | |
1940 | * GlobalMid_Lock GlobalMaxActiveXid init_cifs | |
1941 | * GlobalCurrentXid | |
1942 | * GlobalTotalActiveXid | |
1943 | * TCP_Server_Info->srv_lock (anything in struct not protected by another lock and can change) | |
1944 | * TCP_Server_Info->mid_lock TCP_Server_Info->pending_mid_q cifs_get_tcp_session | |
1945 | * ->CurrentMid | |
1946 | * (any changes in mid_q_entry fields) | |
1947 | * TCP_Server_Info->req_lock TCP_Server_Info->in_flight cifs_get_tcp_session | |
1948 | * ->credits | |
1949 | * ->echo_credits | |
1950 | * ->oplock_credits | |
1951 | * ->reconnect_instance | |
1952 | * cifs_ses->ses_lock (anything that is not protected by another lock and can change) | |
1953 | * cifs_ses->iface_lock cifs_ses->iface_list sesInfoAlloc | |
1954 | * ->iface_count | |
1955 | * ->iface_last_update | |
1956 | * cifs_ses->chan_lock cifs_ses->chans | |
1957 | * ->chans_need_reconnect | |
1958 | * ->chans_in_reconnect | |
1959 | * cifs_tcon->tc_lock (anything that is not protected by another lock and can change) | |
1960 | * cifsInodeInfo->open_file_lock cifsInodeInfo->openFileList cifs_alloc_inode | |
1961 | * cifsInodeInfo->writers_lock cifsInodeInfo->writers cifsInodeInfo_alloc | |
1962 | * cifsInodeInfo->lock_sem cifsInodeInfo->llist cifs_init_once | |
1963 | * ->can_cache_brlcks | |
1964 | * cifsInodeInfo->deferred_lock cifsInodeInfo->deferred_closes cifsInodeInfo_alloc | |
1965 | * cached_fid->fid_mutex cifs_tcon->crfid tconInfoAlloc | |
1966 | * cifsFileInfo->fh_mutex cifsFileInfo cifs_new_fileinfo | |
1967 | * cifsFileInfo->file_info_lock cifsFileInfo->count cifs_new_fileinfo | |
1968 | * ->invalidHandle initiate_cifs_search | |
1969 | * ->oplock_break_cancelled | |
1970 | * cifs_aio_ctx->aio_mutex cifs_aio_ctx cifs_aio_ctx_alloc | |
1da177e4 LT |
1971 | ****************************************************************************/ |
1972 | ||
1973 | #ifdef DECLARE_GLOBALS_HERE | |
1974 | #define GLOBAL_EXTERN | |
1975 | #else | |
1976 | #define GLOBAL_EXTERN extern | |
1977 | #endif | |
1978 | ||
e7ddee90 JL |
1979 | /* |
1980 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1981 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1982 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1983 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1984 | * by iterating over cifs_tcp_ses_list |
1985 | */ | |
89e42f49 | 1986 | extern struct list_head cifs_tcp_ses_list; |
e7ddee90 | 1987 | |
f1987b44 JL |
1988 | /* |
1989 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1990 | * tcp session, and the list of tcon's per smb session. It also protects | |
d7d7a66a | 1991 | * the reference counters for the server, smb session, and tcon. |
3afca265 SF |
1992 | * generally the locks should be taken in order tcp_ses_lock before |
1993 | * tcon->open_file_lock and that before file->file_info_lock since the | |
1994 | * structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file | |
f1987b44 | 1995 | */ |
89e42f49 | 1996 | extern spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc | 1997 | |
1da177e4 LT |
1998 | /* |
1999 | * Global transaction id (XID) information | |
2000 | */ | |
1bfa25ee SF |
2001 | extern unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ |
2002 | extern unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ | |
2003 | extern unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ | |
2004 | extern spinlock_t GlobalMid_Lock; /* protects above & list operations on midQ entries */ | |
2005 | ||
1da177e4 LT |
2006 | /* |
2007 | * Global counters, updated atomically | |
2008 | */ | |
1bfa25ee SF |
2009 | extern atomic_t sesInfoAllocCount; |
2010 | extern atomic_t tconInfoAllocCount; | |
2011 | extern atomic_t tcpSesNextId; | |
2012 | extern atomic_t tcpSesAllocCount; | |
2013 | extern atomic_t tcpSesReconnectCount; | |
2014 | extern atomic_t tconInfoReconnectCount; | |
1da177e4 | 2015 | |
aaa9bbe0 | 2016 | /* Various Debug counters */ |
c2c17ddb SF |
2017 | extern atomic_t buf_alloc_count; /* current number allocated */ |
2018 | extern atomic_t small_buf_alloc_count; | |
4498eed5 | 2019 | #ifdef CONFIG_CIFS_STATS2 |
c2c17ddb SF |
2020 | extern atomic_t total_buf_alloc_count; /* total allocated over all time */ |
2021 | extern atomic_t total_small_buf_alloc_count; | |
00778e22 | 2022 | extern unsigned int slow_rsp_threshold; /* number of secs before logging */ |
4498eed5 | 2023 | #endif |
1da177e4 LT |
2024 | |
2025 | /* Misc globals */ | |
f92a720e SF |
2026 | extern bool enable_oplocks; /* enable or disable oplocks */ |
2027 | extern bool lookupCacheEnabled; | |
2028 | extern unsigned int global_secflags; /* if on, session setup sent | |
1da177e4 | 2029 | with more secure ntlmssp2 challenge/resp */ |
f92a720e | 2030 | extern unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
29e27923 | 2031 | extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */ |
fbfd0b46 | 2032 | extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */ |
53d31a3f | 2033 | extern bool enable_negotiate_signing; /* request use of faster (GMAC) signing if available */ |
f92a720e SF |
2034 | extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
2035 | extern unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
2036 | extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
2037 | extern unsigned int cifs_min_small; /* min size of small buf pool */ | |
2038 | extern unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
2039 | extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */ | |
c2c17ddb | 2040 | extern atomic_t mid_count; |
1da177e4 | 2041 | |
9b646972 | 2042 | void cifs_oplock_break(struct work_struct *work); |
b98749ca | 2043 | void cifs_queue_oplock_break(struct cifsFileInfo *cfile); |
c3f207ab | 2044 | void smb2_deferred_work_close(struct work_struct *work); |
3b7433b8 | 2045 | |
c3f207ab | 2046 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 2047 | extern struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 2048 | extern struct workqueue_struct *decrypt_wq; |
32546a95 | 2049 | extern struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 2050 | extern struct workqueue_struct *cifsoplockd_wq; |
c3f207ab | 2051 | extern struct workqueue_struct *deferredclose_wq; |
3d22462a | 2052 | extern __u32 cifs_lock_secret; |
abd2e44d | 2053 | |
2dc7e1c0 PS |
2054 | extern mempool_t *cifs_mid_poolp; |
2055 | ||
23db65f5 JL |
2056 | /* Operations for different SMB versions */ |
2057 | #define SMB1_VERSION_STRING "1.0" | |
7ef93ffc SF |
2058 | #define SMB20_VERSION_STRING "2.0" |
2059 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY | |
23db65f5 JL |
2060 | extern struct smb_version_operations smb1_operations; |
2061 | extern struct smb_version_values smb1_values; | |
53ef1016 | 2062 | extern struct smb_version_operations smb20_operations; |
e4aa25e7 | 2063 | extern struct smb_version_values smb20_values; |
7ef93ffc | 2064 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
1080ef75 SF |
2065 | #define SMB21_VERSION_STRING "2.1" |
2066 | extern struct smb_version_operations smb21_operations; | |
2067 | extern struct smb_version_values smb21_values; | |
9764c02f SF |
2068 | #define SMBDEFAULT_VERSION_STRING "default" |
2069 | extern struct smb_version_values smbdefault_values; | |
2070 | #define SMB3ANY_VERSION_STRING "3" | |
2071 | extern struct smb_version_values smb3any_values; | |
e4aa25e7 | 2072 | #define SMB30_VERSION_STRING "3.0" |
38107d45 | 2073 | extern struct smb_version_operations smb30_operations; |
e4aa25e7 | 2074 | extern struct smb_version_values smb30_values; |
20b6d8b4 | 2075 | #define SMB302_VERSION_STRING "3.02" |
4a3b38ae | 2076 | #define ALT_SMB302_VERSION_STRING "3.0.2" |
20b6d8b4 SF |
2077 | /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */ |
2078 | extern struct smb_version_values smb302_values; | |
5f7fbf73 | 2079 | #define SMB311_VERSION_STRING "3.1.1" |
aab1893d SF |
2080 | #define ALT_SMB311_VERSION_STRING "3.11" |
2081 | extern struct smb_version_operations smb311_operations; | |
5f7fbf73 | 2082 | extern struct smb_version_values smb311_values; |
b8f7442b | 2083 | |
0b0430c6 K |
2084 | static inline char *get_security_type_str(enum securityEnum sectype) |
2085 | { | |
2086 | switch (sectype) { | |
2087 | case RawNTLMSSP: | |
2088 | return "RawNTLMSSP"; | |
2089 | case Kerberos: | |
2090 | return "Kerberos"; | |
2091 | case NTLMv2: | |
2092 | return "NTLMv2"; | |
0b0430c6 K |
2093 | default: |
2094 | return "Unknown"; | |
2095 | } | |
2096 | } | |
2097 | ||
b8f7442b AA |
2098 | static inline bool is_smb1_server(struct TCP_Server_Info *server) |
2099 | { | |
2100 | return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0; | |
2101 | } | |
2102 | ||
e183785f PA |
2103 | static inline bool is_tcon_dfs(struct cifs_tcon *tcon) |
2104 | { | |
2105 | /* | |
2106 | * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS | |
2107 | * Subsystem Notifies That a Share Is a DFS Share. | |
2108 | * | |
2109 | * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server | |
2110 | * Application Updates a Share. | |
2111 | */ | |
2112 | if (!tcon || !tcon->ses || !tcon->ses->server) | |
2113 | return false; | |
2114 | return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS : | |
2115 | tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT); | |
2116 | } | |
2117 | ||
c88f7dcd PA |
2118 | static inline bool cifs_is_referral_server(struct cifs_tcon *tcon, |
2119 | const struct dfs_info3_param *ref) | |
2120 | { | |
2121 | /* | |
2122 | * Check if all targets are capable of handling DFS referrals as per | |
2123 | * MS-DFSC 2.2.4 RESP_GET_DFS_REFERRAL. | |
2124 | */ | |
2125 | return is_tcon_dfs(tcon) || (ref && (ref->flags & DFSREF_REFERRAL_SERVER)); | |
2126 | } | |
2127 | ||
773891ff | 2128 | static inline u64 cifs_flock_len(const struct file_lock *fl) |
d80c6984 | 2129 | { |
773891ff | 2130 | return (u64)fl->fl_end - fl->fl_start + 1; |
d80c6984 PA |
2131 | } |
2132 | ||
de3a9e94 PA |
2133 | static inline size_t ntlmssp_workstation_name_size(const struct cifs_ses *ses) |
2134 | { | |
2135 | if (WARN_ON_ONCE(!ses || !ses->server)) | |
2136 | return 0; | |
2137 | /* | |
2138 | * Make workstation name no more than 15 chars when using insecure dialects as some legacy | |
2139 | * servers do require it during NTLMSSP. | |
2140 | */ | |
2141 | if (ses->server->dialect <= SMB20_PROT_ID) | |
2142 | return min_t(size_t, sizeof(ses->workstation_name), RFC1001_NAME_LEN_WITH_NULL); | |
2143 | return sizeof(ses->workstation_name); | |
2144 | } | |
2145 | ||
76894f3e PA |
2146 | static inline void move_cifs_info_to_smb2(struct smb2_file_all_info *dst, const FILE_ALL_INFO *src) |
2147 | { | |
2148 | memcpy(dst, src, (size_t)((u8 *)&src->AccessFlags - (u8 *)src)); | |
2149 | dst->AccessFlags = src->AccessFlags; | |
2150 | dst->CurrentByteOffset = src->CurrentByteOffset; | |
2151 | dst->Mode = src->Mode; | |
2152 | dst->AlignmentRequirement = src->AlignmentRequirement; | |
2153 | dst->FileNameLength = src->FileNameLength; | |
2154 | } | |
2155 | ||
f7f291e1 PA |
2156 | static inline unsigned int cifs_get_num_sgs(const struct smb_rqst *rqst, |
2157 | int num_rqst, | |
2158 | const u8 *sig) | |
2159 | { | |
2160 | unsigned int len, skip; | |
2161 | unsigned int nents = 0; | |
2162 | unsigned long addr; | |
2163 | int i, j; | |
2164 | ||
2165 | /* Assumes the first rqst has a transform header as the first iov. | |
2166 | * I.e. | |
2167 | * rqst[0].rq_iov[0] is transform header | |
2168 | * rqst[0].rq_iov[1+] data to be encrypted/decrypted | |
2169 | * rqst[1+].rq_iov[0+] data to be encrypted/decrypted | |
2170 | */ | |
2171 | for (i = 0; i < num_rqst; i++) { | |
2172 | /* | |
2173 | * The first rqst has a transform header where the | |
2174 | * first 20 bytes are not part of the encrypted blob. | |
2175 | */ | |
2176 | for (j = 0; j < rqst[i].rq_nvec; j++) { | |
2177 | struct kvec *iov = &rqst[i].rq_iov[j]; | |
2178 | ||
2179 | skip = (i == 0) && (j == 0) ? 20 : 0; | |
2180 | addr = (unsigned long)iov->iov_base + skip; | |
2181 | if (unlikely(is_vmalloc_addr((void *)addr))) { | |
2182 | len = iov->iov_len - skip; | |
2183 | nents += DIV_ROUND_UP(offset_in_page(addr) + len, | |
2184 | PAGE_SIZE); | |
2185 | } else { | |
2186 | nents++; | |
2187 | } | |
2188 | } | |
2189 | nents += rqst[i].rq_npages; | |
2190 | } | |
2191 | nents += DIV_ROUND_UP(offset_in_page(sig) + SMB2_SIGNATURE_SIZE, PAGE_SIZE); | |
2192 | return nents; | |
2193 | } | |
2194 | ||
2195 | /* We can not use the normal sg_set_buf() as we will sometimes pass a | |
2196 | * stack object as buf. | |
2197 | */ | |
2198 | static inline struct scatterlist *cifs_sg_set_buf(struct scatterlist *sg, | |
2199 | const void *buf, | |
2200 | unsigned int buflen) | |
2201 | { | |
2202 | unsigned long addr = (unsigned long)buf; | |
2203 | unsigned int off = offset_in_page(addr); | |
2204 | ||
2205 | addr &= PAGE_MASK; | |
2206 | if (unlikely(is_vmalloc_addr((void *)addr))) { | |
2207 | do { | |
2208 | unsigned int len = min_t(unsigned int, buflen, PAGE_SIZE - off); | |
2209 | ||
2210 | sg_set_page(sg++, vmalloc_to_page((void *)addr), len, off); | |
2211 | ||
2212 | off = 0; | |
2213 | addr += PAGE_SIZE; | |
2214 | buflen -= len; | |
2215 | } while (buflen); | |
2216 | } else { | |
2217 | sg_set_page(sg++, virt_to_page(addr), buflen, off); | |
2218 | } | |
2219 | return sg; | |
2220 | } | |
2221 | ||
abd2e44d | 2222 | #endif /* _CIFS_GLOB_H */ |