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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
7ee1af76 | 6 | * Jeremy Allison (jra@samba.org) |
1da177e4 LT |
7 | * |
8 | * This library is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as published | |
10 | * by the Free Software Foundation; either version 2.1 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | * the GNU Lesser General Public License for more details. | |
d38d8c74 | 17 | * |
1da177e4 | 18 | */ |
abd2e44d SJ |
19 | #ifndef _CIFS_GLOB_H |
20 | #define _CIFS_GLOB_H | |
21 | ||
1da177e4 LT |
22 | #include <linux/in.h> |
23 | #include <linux/in6.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
2dc7e1c0 | 25 | #include <linux/mempool.h> |
9b646972 | 26 | #include <linux/workqueue.h> |
1da177e4 | 27 | #include "cifs_fs_sb.h" |
442aa310 | 28 | #include "cifsacl.h" |
d2b91521 SP |
29 | #include <crypto/internal/hash.h> |
30 | #include <linux/scatterlist.h> | |
31 | ||
1da177e4 LT |
32 | /* |
33 | * The sizes of various internal tables and strings | |
34 | */ | |
35 | #define MAX_UID_INFO 16 | |
36 | #define MAX_SES_INFO 2 | |
37 | #define MAX_TCON_INFO 4 | |
38 | ||
ef571cad | 39 | #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) |
1da177e4 | 40 | #define MAX_SERVER_SIZE 15 |
2e325d59 | 41 | #define MAX_SHARE_SIZE 80 |
8727c8a8 SF |
42 | #define MAX_USERNAME_SIZE 256 /* reasonable maximum for current servers */ |
43 | #define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ | |
1da177e4 LT |
44 | |
45 | #define CIFS_MIN_RCV_POOL 4 | |
46 | ||
2c0c2a08 | 47 | #define MAX_REOPEN_ATT 5 /* these many maximum attempts to reopen a file */ |
6d20e840 SJ |
48 | /* |
49 | * default attribute cache timeout (jiffies) | |
50 | */ | |
51 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
52 | ||
53 | /* | |
54 | * max attribute cache timeout (jiffies) - 2^30 | |
55 | */ | |
56 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
57 | ||
1da177e4 LT |
58 | /* |
59 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 60 | * on one socket concurrently. |
1da177e4 | 61 | */ |
10b9b98e | 62 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 63 | |
8ecaf67a JL |
64 | #define RFC1001_NAME_LEN 15 |
65 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
66 | ||
67 | /* currently length of NIP6_FMT */ | |
68 | #define SERVER_NAME_LENGTH 40 | |
1da177e4 LT |
69 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
70 | ||
71 | /* used to define string lengths for reversing unicode strings */ | |
72 | /* (256+1)*2 = 514 */ | |
73 | /* (max path length + 1 for null) * 2 for unicode */ | |
74 | #define MAX_NAME 514 | |
75 | ||
76 | #include "cifspdu.h" | |
77 | ||
1da177e4 LT |
78 | #ifndef XATTR_DOS_ATTRIB |
79 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
80 | #endif | |
81 | ||
1da177e4 LT |
82 | /* |
83 | * CIFS vfs client Status information (based on what we know.) | |
84 | */ | |
85 | ||
6c0f6218 | 86 | /* associated with each tcp and smb session */ |
1da177e4 LT |
87 | enum statusEnum { |
88 | CifsNew = 0, | |
89 | CifsGood, | |
90 | CifsExiting, | |
fd88ce93 SF |
91 | CifsNeedReconnect, |
92 | CifsNeedNegotiate | |
1da177e4 LT |
93 | }; |
94 | ||
95 | enum securityEnum { | |
daf5b0b6 | 96 | LANMAN = 0, /* Legacy LANMAN auth */ |
3979877e | 97 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 98 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 99 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
f46c7234 | 100 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ |
c16fefa5 | 101 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
102 | }; |
103 | ||
104 | enum protocolEnum { | |
3ec332ef | 105 | TCP = 0, |
1da177e4 LT |
106 | SCTP |
107 | /* Netbios frames protocol not supported at this time */ | |
108 | }; | |
109 | ||
5f98ca9a | 110 | struct session_key { |
b609f06a | 111 | unsigned int len; |
21e73393 | 112 | char *response; |
b609f06a SF |
113 | }; |
114 | ||
d2b91521 SP |
115 | /* crypto security descriptor definition */ |
116 | struct sdesc { | |
117 | struct shash_desc shash; | |
118 | char ctx[]; | |
119 | }; | |
120 | ||
f7c5445a | 121 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
122 | struct cifs_secmech { |
123 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
124 | struct crypto_shash *md5; /* md5 hash function */ | |
125 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ | |
126 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
127 | }; | |
128 | ||
d3686d54 | 129 | /* per smb session structure/fields */ |
d2b91521 SP |
130 | struct ntlmssp_auth { |
131 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ | |
132 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
133 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 134 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
135 | }; |
136 | ||
442aa310 SF |
137 | struct cifs_cred { |
138 | int uid; | |
139 | int gid; | |
140 | int mode; | |
141 | int cecount; | |
142 | struct cifs_sid osid; | |
143 | struct cifs_sid gsid; | |
144 | struct cifs_ntace *ntaces; | |
145 | struct cifs_ace *aces; | |
146 | }; | |
147 | ||
1da177e4 LT |
148 | /* |
149 | ***************************************************************** | |
150 | * Except the CIFS PDUs themselves all the | |
151 | * globally interesting structs should go here | |
152 | ***************************************************************** | |
153 | */ | |
154 | ||
23db65f5 JL |
155 | enum smb_version { |
156 | Smb_1 = 1, | |
1080ef75 | 157 | Smb_21, |
23db65f5 JL |
158 | }; |
159 | ||
121b046a JL |
160 | struct mid_q_entry; |
161 | struct TCP_Server_Info; | |
55157dfb | 162 | struct cifsFileInfo; |
082d0642 | 163 | struct cifs_ses; |
2e6e02ab | 164 | struct cifs_tcon; |
121b046a | 165 | |
23db65f5 | 166 | struct smb_version_operations { |
121b046a JL |
167 | int (*send_cancel)(struct TCP_Server_Info *, void *, |
168 | struct mid_q_entry *); | |
55157dfb | 169 | bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); |
082d0642 PS |
170 | /* setup request: allocate mid, sign message */ |
171 | int (*setup_request)(struct cifs_ses *, struct kvec *, unsigned int, | |
172 | struct mid_q_entry **); | |
173 | /* check response: verify signature, map error */ | |
174 | int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, | |
175 | bool); | |
a891f0f8 PS |
176 | void (*add_credits)(struct TCP_Server_Info *, const unsigned int, |
177 | const int); | |
45275789 | 178 | void (*set_credits)(struct TCP_Server_Info *, const int); |
a891f0f8 PS |
179 | int * (*get_credits_field)(struct TCP_Server_Info *, const int); |
180 | unsigned int (*get_credits)(struct mid_q_entry *); | |
88257360 | 181 | __u64 (*get_next_mid)(struct TCP_Server_Info *); |
eb378711 PS |
182 | /* data offset from read response message */ |
183 | unsigned int (*read_data_offset)(char *); | |
184 | /* data length from read response message */ | |
185 | unsigned int (*read_data_length)(char *); | |
186 | /* map smb to linux error */ | |
187 | int (*map_error)(char *, bool); | |
8aa26f3e PS |
188 | /* find mid corresponding to the response message */ |
189 | struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *); | |
190 | void (*dump_detail)(void *); | |
191 | /* verify the message */ | |
192 | int (*check_message)(char *, unsigned int); | |
193 | bool (*is_oplock_break)(char *, struct TCP_Server_Info *); | |
316cf94a PS |
194 | /* process transaction2 response */ |
195 | bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *, | |
196 | char *, int); | |
286170aa PS |
197 | /* check if we need to negotiate */ |
198 | bool (*need_neg)(struct TCP_Server_Info *); | |
199 | /* negotiate to the server */ | |
200 | int (*negotiate)(const unsigned int, struct cifs_ses *); | |
58c45c58 PS |
201 | /* setup smb sessionn */ |
202 | int (*sess_setup)(const unsigned int, struct cifs_ses *, | |
203 | const struct nls_table *); | |
204 | /* close smb session */ | |
205 | int (*logoff)(const unsigned int, struct cifs_ses *); | |
2e6e02ab PS |
206 | /* connect to a server share */ |
207 | int (*tree_connect)(const unsigned int, struct cifs_ses *, const char *, | |
208 | struct cifs_tcon *, const struct nls_table *); | |
209 | /* close tree connecion */ | |
210 | int (*tree_disconnect)(const unsigned int, struct cifs_tcon *); | |
23db65f5 JL |
211 | }; |
212 | ||
213 | struct smb_version_values { | |
214 | char *version_string; | |
106dc538 PS |
215 | __u32 large_lock_type; |
216 | __u32 exclusive_lock_type; | |
217 | __u32 shared_lock_type; | |
218 | __u32 unlock_lock_type; | |
1887f601 PS |
219 | size_t header_size; |
220 | size_t max_header_size; | |
eb378711 | 221 | size_t read_rsp_size; |
2dc7e1c0 | 222 | __le16 lock_cmd; |
23db65f5 JL |
223 | }; |
224 | ||
1887f601 PS |
225 | #define HEADER_SIZE(server) (server->vals->header_size) |
226 | #define MAX_HEADER_SIZE(server) (server->vals->max_header_size) | |
227 | ||
f87d39d9 SF |
228 | struct smb_vol { |
229 | char *username; | |
230 | char *password; | |
231 | char *domainname; | |
232 | char *UNC; | |
233 | char *UNCip; | |
234 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
235 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
236 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
237 | uid_t cred_uid; | |
238 | uid_t linux_uid; | |
239 | gid_t linux_gid; | |
3d3ea8e6 SP |
240 | uid_t backupuid; |
241 | gid_t backupgid; | |
5206efd6 AV |
242 | umode_t file_mode; |
243 | umode_t dir_mode; | |
f87d39d9 SF |
244 | unsigned secFlg; |
245 | bool retry:1; | |
246 | bool intr:1; | |
247 | bool setuids:1; | |
248 | bool override_uid:1; | |
249 | bool override_gid:1; | |
250 | bool dynperm:1; | |
251 | bool noperm:1; | |
252 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
253 | bool cifs_acl:1; | |
3d3ea8e6 SP |
254 | bool backupuid_specified; /* mount option backupuid is specified */ |
255 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
256 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
257 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
258 | bool direct_io:1; | |
259 | bool strict_io:1; /* strict cache behavior */ | |
260 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
261 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
262 | bool no_linux_ext:1; | |
263 | bool sfu_emul:1; | |
264 | bool nullauth:1; /* attempt to authenticate with null user */ | |
265 | bool nocase:1; /* request case insensitive filenames */ | |
266 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
267 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
268 | bool seal:1; /* request transport encryption on share */ | |
269 | bool nodfs:1; /* Do not request DFS, even if available */ | |
270 | bool local_lease:1; /* check leases only on local system, not remote */ | |
271 | bool noblocksnd:1; | |
272 | bool noautotune:1; | |
273 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
274 | bool fsc:1; /* enable fscache */ | |
275 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
276 | bool multiuser:1; | |
d4ffff1f | 277 | bool rwpidforward:1; /* pid forward for read/write operations */ |
f87d39d9 SF |
278 | unsigned int rsize; |
279 | unsigned int wsize; | |
280 | bool sockopt_tcp_nodelay:1; | |
281 | unsigned short int port; | |
282 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ | |
23db65f5 JL |
283 | struct smb_version_operations *ops; |
284 | struct smb_version_values *vals; | |
f87d39d9 SF |
285 | char *prepath; |
286 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ | |
287 | struct nls_table *local_nls; | |
288 | }; | |
289 | ||
25c7f41e PS |
290 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
291 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
292 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
293 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ | |
294 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
295 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
296 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
297 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
298 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
299 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
300 | |
301 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
302 | MS_NODEV | MS_SYNCHRONOUS) | |
303 | ||
304 | struct cifs_mnt_data { | |
305 | struct cifs_sb_info *cifs_sb; | |
306 | struct smb_vol *vol; | |
307 | int flags; | |
308 | }; | |
309 | ||
792af7b0 PS |
310 | static inline unsigned int |
311 | get_rfc1002_length(void *buf) | |
312 | { | |
313 | return be32_to_cpu(*((__be32 *)buf)); | |
314 | } | |
315 | ||
ec2e4523 PS |
316 | static inline void |
317 | inc_rfc1001_len(void *buf, int count) | |
318 | { | |
319 | be32_add_cpu((__be32 *)buf, count); | |
320 | } | |
321 | ||
1da177e4 | 322 | struct TCP_Server_Info { |
3b795210 SF |
323 | struct list_head tcp_ses_list; |
324 | struct list_head smb_ses_list; | |
e7ddee90 | 325 | int srv_count; /* reference counter */ |
a10faeb2 | 326 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 327 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
328 | struct smb_version_operations *ops; |
329 | struct smb_version_values *vals; | |
c3dccf48 | 330 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 331 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 332 | struct socket *ssocket; |
a9f1b85e | 333 | struct sockaddr_storage dstaddr; |
3eb9a889 | 334 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
335 | #ifdef CONFIG_NET_NS |
336 | struct net *net; | |
337 | #endif | |
d38d8c74 | 338 | wait_queue_head_t response_q; |
1da177e4 LT |
339 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
340 | struct list_head pending_mid_q; | |
edf1ae40 SF |
341 | bool noblocksnd; /* use blocking sendmsg */ |
342 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 343 | bool tcp_nodelay; |
2d86dbc9 | 344 | int credits; /* send no more requests at once */ |
fc40f9cf | 345 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 346 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 347 | struct mutex srv_mutex; |
1da177e4 LT |
348 | struct task_struct *tsk; |
349 | char server_GUID[16]; | |
286170aa | 350 | __u16 sec_mode; |
c3dccf48 | 351 | bool session_estab; /* mark when very first sess is established */ |
28ea5290 PS |
352 | #ifdef CONFIG_CIFS_SMB2 |
353 | int echo_credits; /* echo reserved slots */ | |
354 | int oplock_credits; /* oplock break reserved slots */ | |
355 | bool echoes:1; /* enable echoes */ | |
356 | #endif | |
c3dccf48 | 357 | u16 dialect; /* dialect index that server chose */ |
1da177e4 | 358 | enum securityEnum secType; |
10b9b98e | 359 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
360 | unsigned int maxReq; /* Clients should submit no more */ |
361 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
362 | /* multiplexed reads or writes */ | |
363 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
364 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
365 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
366 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 367 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
368 | /* message size the server can send or receive for */ |
369 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
370 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
371 | those that can be specified uniquely with | |
372 | vcnumbers */ | |
1da177e4 | 373 | int capabilities; /* allow selective disabling of caps by smb sess */ |
de7ed55d | 374 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 375 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 376 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 377 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 378 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 379 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 380 | struct session_key session_key; |
3a5ff61c | 381 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 382 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
26efa0ba | 383 | /* extended security flavors that server supports */ |
c3dccf48 JL |
384 | bool sec_ntlmssp; /* supports NTLMSSP */ |
385 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
386 | bool sec_kerberos; /* supports plain Kerberos */ |
387 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 388 | bool large_buf; /* is current buffer large? */ |
c74093b6 | 389 | struct delayed_work echo; /* echo ping workqueue job */ |
1041e3f9 JL |
390 | struct kvec *iov; /* reusable kvec array for receives */ |
391 | unsigned int nr_iov; /* number of kvecs in array */ | |
2a37ef94 JL |
392 | char *smallbuf; /* pointer to current "small" buffer */ |
393 | char *bigbuf; /* pointer to current "big" buffer */ | |
394 | unsigned int total_read; /* total amount of data read in this pass */ | |
488f1d2d SJ |
395 | #ifdef CONFIG_CIFS_FSCACHE |
396 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
397 | #endif | |
c3dccf48 | 398 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 399 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
400 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
401 | #endif | |
ec2e4523 PS |
402 | #ifdef CONFIG_CIFS_SMB2 |
403 | unsigned int max_read; | |
404 | unsigned int max_write; | |
405 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 LT |
406 | }; |
407 | ||
fc40f9cf PS |
408 | static inline unsigned int |
409 | in_flight(struct TCP_Server_Info *server) | |
410 | { | |
411 | unsigned int num; | |
412 | spin_lock(&server->req_lock); | |
413 | num = server->in_flight; | |
414 | spin_unlock(&server->req_lock); | |
415 | return num; | |
416 | } | |
417 | ||
2d86dbc9 | 418 | static inline bool |
bc205ed1 | 419 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 420 | { |
2d86dbc9 | 421 | int num; |
fc40f9cf | 422 | spin_lock(&server->req_lock); |
bc205ed1 | 423 | num = *credits; |
fc40f9cf | 424 | spin_unlock(&server->req_lock); |
2d86dbc9 | 425 | return num > 0; |
fc40f9cf PS |
426 | } |
427 | ||
45275789 | 428 | static inline void |
a891f0f8 PS |
429 | add_credits(struct TCP_Server_Info *server, const unsigned int add, |
430 | const int optype) | |
45275789 | 431 | { |
a891f0f8 | 432 | server->ops->add_credits(server, add, optype); |
45275789 PS |
433 | } |
434 | ||
435 | static inline void | |
436 | set_credits(struct TCP_Server_Info *server, const int val) | |
437 | { | |
438 | server->ops->set_credits(server, val); | |
439 | } | |
440 | ||
88257360 PS |
441 | static inline __u64 |
442 | get_next_mid(struct TCP_Server_Info *server) | |
443 | { | |
444 | return server->ops->get_next_mid(server); | |
445 | } | |
446 | ||
f1d0c998 RL |
447 | /* |
448 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
449 | * when CONFIG_NET_NS isn't set. | |
450 | */ | |
451 | ||
452 | #ifdef CONFIG_NET_NS | |
453 | ||
454 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
455 | { | |
456 | return srv->net; | |
457 | } | |
458 | ||
459 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
460 | { | |
461 | srv->net = net; | |
462 | } | |
463 | ||
464 | #else | |
465 | ||
466 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
467 | { | |
468 | return &init_net; | |
469 | } | |
470 | ||
471 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
472 | { | |
473 | } | |
474 | ||
475 | #endif | |
476 | ||
1da177e4 LT |
477 | /* |
478 | * Session structure. One of these for each uid session with a particular host | |
479 | */ | |
96daf2b0 | 480 | struct cifs_ses { |
14fbf50d | 481 | struct list_head smb_ses_list; |
3b795210 | 482 | struct list_head tcon_list; |
d7b619cf | 483 | struct mutex session_mutex; |
1da177e4 | 484 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 485 | int ses_count; /* reference counter */ |
1da177e4 | 486 | enum statusEnum status; |
750d1151 | 487 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
488 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
489 | __u16 flags; | |
eca6acf9 | 490 | __u16 vcnum; |
ad009ac9 SF |
491 | char *serverOS; /* name of operating system underlying server */ |
492 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 | 493 | char *serverDomain; /* security realm of server */ |
286170aa | 494 | __u64 Suid; /* remote smb uid */ |
3e4b3e1f JL |
495 | uid_t linux_uid; /* overriding owner of files on the mount */ |
496 | uid_t cred_uid; /* owner of credentials */ | |
1da177e4 | 497 | int capabilities; |
d38d8c74 | 498 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 499 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
500 | char *user_name; /* must not be null except during init of sess |
501 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
502 | char *domainName; |
503 | char *password; | |
5d0d2882 | 504 | struct session_key auth_key; |
d3686d54 | 505 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
3b795210 | 506 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
5478f9ba PS |
507 | #ifdef CONFIG_CIFS_SMB2 |
508 | __u16 session_flags; | |
509 | #endif /* CONFIG_CIFS_SMB2 */ | |
1da177e4 | 510 | }; |
9ac00b7d | 511 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 512 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
513 | #define CIFS_SES_OS2 2 |
514 | #define CIFS_SES_W9X 4 | |
515 | /* following flag is set for old servers such as OS2 (and Win95?) | |
516 | which do not negotiate NTLM or POSIX dialects, but instead | |
517 | negotiate one of the older LANMAN dialects */ | |
518 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
519 | /* |
520 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 521 | * session |
1da177e4 | 522 | */ |
96daf2b0 | 523 | struct cifs_tcon { |
f1987b44 JL |
524 | struct list_head tcon_list; |
525 | int tc_count; | |
1da177e4 | 526 | struct list_head openFileList; |
96daf2b0 | 527 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 528 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 529 | char *nativeFileSystem; |
00e485b0 | 530 | char *password; /* for share-level security */ |
faaf946a | 531 | __u32 tid; /* The 4 byte tree id */ |
1da177e4 LT |
532 | __u16 Flags; /* optional support bits */ |
533 | enum statusEnum tidStatus; | |
1da177e4 LT |
534 | #ifdef CONFIG_CIFS_STATS |
535 | atomic_t num_smbs_sent; | |
536 | atomic_t num_writes; | |
537 | atomic_t num_reads; | |
b298f223 | 538 | atomic_t num_flushes; |
1da177e4 LT |
539 | atomic_t num_oplock_brks; |
540 | atomic_t num_opens; | |
a5a2b489 | 541 | atomic_t num_closes; |
1da177e4 LT |
542 | atomic_t num_deletes; |
543 | atomic_t num_mkdirs; | |
65bc98b0 SF |
544 | atomic_t num_posixopens; |
545 | atomic_t num_posixmkdirs; | |
1da177e4 LT |
546 | atomic_t num_rmdirs; |
547 | atomic_t num_renames; | |
548 | atomic_t num_t2renames; | |
dfb7533b SF |
549 | atomic_t num_ffirst; |
550 | atomic_t num_fnext; | |
551 | atomic_t num_fclose; | |
a5a2b489 SF |
552 | atomic_t num_hardlinks; |
553 | atomic_t num_symlinks; | |
554 | atomic_t num_locks; | |
0a4b92c0 SF |
555 | atomic_t num_acl_get; |
556 | atomic_t num_acl_set; | |
a5a2b489 SF |
557 | #ifdef CONFIG_CIFS_STATS2 |
558 | unsigned long long time_writes; | |
559 | unsigned long long time_reads; | |
560 | unsigned long long time_opens; | |
561 | unsigned long long time_deletes; | |
562 | unsigned long long time_closes; | |
563 | unsigned long long time_mkdirs; | |
564 | unsigned long long time_rmdirs; | |
565 | unsigned long long time_renames; | |
566 | unsigned long long time_t2renames; | |
567 | unsigned long long time_ffirst; | |
568 | unsigned long long time_fnext; | |
569 | unsigned long long time_fclose; | |
570 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
571 | __u64 bytes_read; |
572 | __u64 bytes_written; | |
573 | spinlock_t stat_lock; | |
a5a2b489 | 574 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 575 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 576 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 577 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
578 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
579 | bool retry:1; | |
580 | bool nocase:1; | |
95b1cb90 | 581 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 582 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 583 | for this mount even if server would support */ |
84210e91 | 584 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 585 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 586 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
faaf946a PS |
587 | #ifdef CONFIG_CIFS_SMB2 |
588 | bool print:1; /* set if connection to printer share */ | |
589 | bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */ | |
590 | __u32 capabilities; | |
591 | __u32 share_flags; | |
592 | __u32 maximal_access; | |
593 | __u32 vol_serial_number; | |
594 | __le64 vol_create_time; | |
595 | #endif /* CONFIG_CIFS_SMB2 */ | |
d03382ce SJ |
596 | #ifdef CONFIG_CIFS_FSCACHE |
597 | u64 resource_id; /* server resource id */ | |
598 | struct fscache_cookie *fscache; /* cookie for share */ | |
599 | #endif | |
c18c842b | 600 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
601 | }; |
602 | ||
7ffec372 JL |
603 | /* |
604 | * This is a refcounted and timestamped container for a tcon pointer. The | |
605 | * container holds a tcon reference. It is considered safe to free one of | |
606 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
607 | * "get" on the container. | |
608 | */ | |
609 | struct tcon_link { | |
b647c35f JL |
610 | struct rb_node tl_rbnode; |
611 | uid_t tl_uid; | |
9d002df4 JL |
612 | unsigned long tl_flags; |
613 | #define TCON_LINK_MASTER 0 | |
614 | #define TCON_LINK_PENDING 1 | |
615 | #define TCON_LINK_IN_TREE 2 | |
616 | unsigned long tl_time; | |
617 | atomic_t tl_count; | |
96daf2b0 | 618 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
619 | }; |
620 | ||
9d002df4 | 621 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 622 | |
96daf2b0 | 623 | static inline struct cifs_tcon * |
7ffec372 JL |
624 | tlink_tcon(struct tcon_link *tlink) |
625 | { | |
9d002df4 | 626 | return tlink->tl_tcon; |
7ffec372 JL |
627 | } |
628 | ||
9d002df4 | 629 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 630 | |
13cfb733 JL |
631 | static inline struct tcon_link * |
632 | cifs_get_tlink(struct tcon_link *tlink) | |
633 | { | |
9d002df4 JL |
634 | if (tlink && !IS_ERR(tlink)) |
635 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
636 | return tlink; |
637 | } | |
638 | ||
7ffec372 | 639 | /* This function is always expected to succeed */ |
96daf2b0 | 640 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 641 | |
1da177e4 | 642 | /* |
7ee1af76 JA |
643 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
644 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
645 | */ |
646 | struct cifsLockInfo { | |
7ee1af76 | 647 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
648 | struct list_head blist; /* pointer to locks blocked on this */ |
649 | wait_queue_head_t block_q; | |
7ee1af76 JA |
650 | __u64 offset; |
651 | __u64 length; | |
03776f45 | 652 | __u32 pid; |
04a6aa8a | 653 | __u32 type; |
1da177e4 LT |
654 | }; |
655 | ||
656 | /* | |
657 | * One of these for each open instance of a file | |
658 | */ | |
659 | struct cifs_search_info { | |
660 | loff_t index_of_last_entry; | |
661 | __u16 entries_in_buffer; | |
662 | __u16 info_level; | |
663 | __u32 resume_key; | |
d38d8c74 SF |
664 | char *ntwrk_buf_start; |
665 | char *srch_entries_start; | |
0752f152 | 666 | char *last_entry; |
eaf35b1e | 667 | const char *presume_name; |
1da177e4 | 668 | unsigned int resume_name_len; |
4b18f2a9 SF |
669 | bool endOfSearch:1; |
670 | bool emptyDir:1; | |
671 | bool unicode:1; | |
672 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
673 | }; |
674 | ||
675 | struct cifsFileInfo { | |
676 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
677 | struct list_head flist; /* next fid (file instance) for this inode */ | |
fbd35aca PS |
678 | struct list_head llist; /* |
679 | * brlocks held by this fid, protected by | |
680 | * lock_mutex from cifsInodeInfo structure | |
681 | */ | |
1da177e4 LT |
682 | unsigned int uid; /* allows finding which FileInfo structure */ |
683 | __u32 pid; /* process id who opened file */ | |
684 | __u16 netfid; /* file id from remote */ | |
685 | /* BB add lock scope info here if needed */ ; | |
686 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 687 | struct dentry *dentry; |
15886177 | 688 | unsigned int f_flags; |
13cfb733 | 689 | struct tcon_link *tlink; |
4b18f2a9 | 690 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 691 | bool oplock_break_cancelled:1; |
6c0f6218 | 692 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 693 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 694 | struct cifs_search_info srch_inf; |
9b646972 | 695 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
696 | }; |
697 | ||
fa2989f4 PS |
698 | struct cifs_io_parms { |
699 | __u16 netfid; | |
700 | __u32 pid; | |
701 | __u64 offset; | |
702 | unsigned int length; | |
96daf2b0 | 703 | struct cifs_tcon *tcon; |
fa2989f4 PS |
704 | }; |
705 | ||
5f6dbc9e JL |
706 | /* |
707 | * Take a reference on the file private data. Must be called with | |
708 | * cifs_file_list_lock held. | |
709 | */ | |
35ebb415 JL |
710 | static inline |
711 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 712 | { |
5f6dbc9e | 713 | ++cifs_file->count; |
35ebb415 | 714 | return cifs_file; |
6ab409b5 DK |
715 | } |
716 | ||
b33879aa | 717 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 718 | |
1da177e4 LT |
719 | /* |
720 | * One of these for each file inode | |
721 | */ | |
722 | ||
723 | struct cifsInodeInfo { | |
d59dad2b | 724 | bool can_cache_brlcks; |
fbd35aca PS |
725 | struct mutex lock_mutex; /* |
726 | * protect the field above and llist | |
727 | * from every cifsFileInfo structure | |
728 | * from openFileList | |
729 | */ | |
d38d8c74 | 730 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 731 | struct list_head openFileList; |
1da177e4 | 732 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
aae62fdb JL |
733 | bool clientCanCacheRead; /* read oplock */ |
734 | bool clientCanCacheAll; /* read and writebehind oplock */ | |
735 | bool delete_pending; /* DELETE_ON_CLOSE is set */ | |
736 | bool invalid_mapping; /* pagecache is invalid */ | |
737 | unsigned long time; /* jiffies of last update of inode */ | |
597b027f | 738 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 739 | u64 uniqueid; /* server inode number */ |
20054bd6 | 740 | u64 createtime; /* creation time on server */ |
9451a9a5 SJ |
741 | #ifdef CONFIG_CIFS_FSCACHE |
742 | struct fscache_cookie *fscache; | |
743 | #endif | |
1da177e4 LT |
744 | struct inode vfs_inode; |
745 | }; | |
746 | ||
747 | static inline struct cifsInodeInfo * | |
748 | CIFS_I(struct inode *inode) | |
749 | { | |
750 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
751 | } | |
752 | ||
753 | static inline struct cifs_sb_info * | |
754 | CIFS_SB(struct super_block *sb) | |
755 | { | |
756 | return sb->s_fs_info; | |
757 | } | |
758 | ||
ab2f218f | 759 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
760 | { |
761 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
762 | return '/'; | |
763 | else | |
764 | return '\\'; | |
765 | } | |
1da177e4 | 766 | |
f87d39d9 SF |
767 | static inline void |
768 | convert_delimiter(char *path, char delim) | |
769 | { | |
770 | int i; | |
771 | char old_delim; | |
772 | ||
773 | if (path == NULL) | |
774 | return; | |
775 | ||
776 | if (delim == '/') | |
777 | old_delim = '\\'; | |
778 | else | |
779 | old_delim = '/'; | |
780 | ||
781 | for (i = 0; path[i] != '\0'; i++) { | |
782 | if (path[i] == old_delim) | |
783 | path[i] = delim; | |
784 | } | |
785 | } | |
786 | ||
a4544347 SF |
787 | #ifdef CONFIG_CIFS_STATS |
788 | #define cifs_stats_inc atomic_inc | |
789 | ||
96daf2b0 | 790 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
791 | unsigned int bytes) |
792 | { | |
793 | if (bytes) { | |
794 | spin_lock(&tcon->stat_lock); | |
795 | tcon->bytes_written += bytes; | |
796 | spin_unlock(&tcon->stat_lock); | |
797 | } | |
798 | } | |
799 | ||
96daf2b0 | 800 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
801 | unsigned int bytes) |
802 | { | |
803 | spin_lock(&tcon->stat_lock); | |
804 | tcon->bytes_read += bytes; | |
805 | spin_unlock(&tcon->stat_lock); | |
806 | } | |
807 | #else | |
808 | ||
d38d8c74 SF |
809 | #define cifs_stats_inc(field) do {} while (0) |
810 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
811 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
812 | |
813 | #endif | |
814 | ||
2b84a36c JL |
815 | |
816 | /* | |
44d22d84 JL |
817 | * This is the prototype for the mid receive function. This function is for |
818 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
819 | * just after the MID in struct smb_hdr). Note: | |
820 | * | |
821 | * - This will be called by cifsd, with no locks held. | |
822 | * - The mid will still be on the pending_mid_q. | |
823 | * - mid->resp_buf will point to the current buffer. | |
824 | * | |
825 | * Returns zero on a successful receive, or an error. The receive state in | |
826 | * the TCP_Server_Info will also be updated. | |
827 | */ | |
828 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
829 | struct mid_q_entry *mid); | |
830 | ||
831 | /* | |
832 | * This is the prototype for the mid callback function. This is called once the | |
833 | * mid has been received off of the socket. When creating one, take special | |
834 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 835 | * |
3c1105df JL |
836 | * - it will be called by cifsd, with no locks held |
837 | * - the mid will be removed from any lists | |
2b84a36c JL |
838 | */ |
839 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
840 | ||
1da177e4 LT |
841 | /* one of these for every pending CIFS request to the server */ |
842 | struct mid_q_entry { | |
843 | struct list_head qhead; /* mids waiting on reply from this server */ | |
2dc7e1c0 | 844 | struct TCP_Server_Info *server; /* server corresponding to this mid */ |
7c9421e1 PS |
845 | __u64 mid; /* multiplex id */ |
846 | __u32 pid; /* process id */ | |
1da177e4 | 847 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
848 | unsigned long when_alloc; /* when mid was created */ |
849 | #ifdef CONFIG_CIFS_STATS2 | |
850 | unsigned long when_sent; /* time when smb send finished */ | |
851 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
852 | #endif | |
44d22d84 | 853 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c JL |
854 | mid_callback_t *callback; /* call completion callback */ |
855 | void *callback_data; /* general purpose pointer for callback */ | |
d4e4854f | 856 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 PS |
857 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
858 | __le16 command; /* smb command code */ | |
859 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
860 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
861 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
862 | }; |
863 | ||
789e6661 SF |
864 | /* Make code in transport.c a little cleaner by moving |
865 | update of optional stats into function below */ | |
866 | #ifdef CONFIG_CIFS_STATS2 | |
867 | ||
868 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
869 | { | |
870 | atomic_inc(&server->in_send); | |
871 | } | |
872 | ||
873 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
874 | { | |
875 | atomic_dec(&server->in_send); | |
876 | } | |
877 | ||
878 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
879 | { | |
880 | atomic_inc(&server->num_waiters); | |
881 | } | |
882 | ||
883 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
884 | { | |
885 | atomic_dec(&server->num_waiters); | |
886 | } | |
887 | ||
888 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
889 | { | |
890 | mid->when_sent = jiffies; | |
891 | } | |
892 | #else | |
893 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
894 | { | |
895 | } | |
896 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
897 | { | |
898 | } | |
899 | ||
900 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
901 | { | |
902 | } | |
903 | ||
904 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
905 | { | |
906 | } | |
907 | ||
908 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
909 | { | |
910 | } | |
911 | #endif | |
1da177e4 | 912 | |
ff5dbd9e SF |
913 | /* for pending dnotify requests */ |
914 | struct dir_notify_req { | |
13cd4b7f SF |
915 | struct list_head lhead; |
916 | __le16 Pid; | |
917 | __le16 PidHigh; | |
918 | __u16 Mid; | |
919 | __u16 Tid; | |
920 | __u16 Uid; | |
921 | __u16 netfid; | |
922 | __u32 filter; /* CompletionFilter (for multishot) */ | |
923 | int multishot; | |
924 | struct file *pfile; | |
ff5dbd9e SF |
925 | }; |
926 | ||
366781c1 SF |
927 | struct dfs_info3_param { |
928 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 929 | int path_consumed; |
366781c1 SF |
930 | int server_type; |
931 | int ref_flag; | |
932 | char *path_name; | |
933 | char *node_name; | |
934 | }; | |
935 | ||
cc0bad75 JL |
936 | /* |
937 | * common struct for holding inode info when searching for or updating an | |
938 | * inode with new info | |
939 | */ | |
940 | ||
941 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
942 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
943 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 944 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
945 | |
946 | struct cifs_fattr { | |
947 | u32 cf_flags; | |
948 | u32 cf_cifsattrs; | |
949 | u64 cf_uniqueid; | |
950 | u64 cf_eof; | |
951 | u64 cf_bytes; | |
20054bd6 | 952 | u64 cf_createtime; |
cc0bad75 JL |
953 | uid_t cf_uid; |
954 | gid_t cf_gid; | |
955 | umode_t cf_mode; | |
956 | dev_t cf_rdev; | |
957 | unsigned int cf_nlink; | |
958 | unsigned int cf_dtype; | |
959 | struct timespec cf_atime; | |
960 | struct timespec cf_mtime; | |
961 | struct timespec cf_ctime; | |
962 | }; | |
963 | ||
366781c1 SF |
964 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
965 | { | |
966 | if (param) { | |
967 | kfree(param->path_name); | |
968 | kfree(param->node_name); | |
969 | kfree(param); | |
970 | } | |
971 | } | |
972 | ||
973 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
974 | int number_of_items) | |
975 | { | |
976 | int i; | |
977 | if ((number_of_items == 0) || (param == NULL)) | |
978 | return; | |
979 | for (i = 0; i < number_of_items; i++) { | |
980 | kfree(param[i].path_name); | |
981 | kfree(param[i].node_name); | |
982 | } | |
983 | kfree(param); | |
984 | } | |
985 | ||
1da177e4 LT |
986 | #define MID_FREE 0 |
987 | #define MID_REQUEST_ALLOCATED 1 | |
988 | #define MID_REQUEST_SUBMITTED 2 | |
989 | #define MID_RESPONSE_RECEIVED 4 | |
990 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 991 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 992 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
993 | |
994 | /* Types of response buffer returned from SendReceive2 */ | |
995 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
996 | #define CIFS_SMALL_BUFFER 1 | |
997 | #define CIFS_LARGE_BUFFER 2 | |
998 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 999 | |
133672ef | 1000 | /* Type of Request to SendReceive2 */ |
7749981e JL |
1001 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
1002 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
1003 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
1004 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
1005 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
1006 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
1007 | ||
a891f0f8 PS |
1008 | /* Type of request operation */ |
1009 | #define CIFS_ECHO_OP 0x080 /* echo request */ | |
1010 | #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ | |
ec2e4523 PS |
1011 | #define CIFS_NEG_OP 0x0200 /* negotiate request */ |
1012 | #define CIFS_OP_MASK 0x0380 /* mask request type */ | |
a891f0f8 | 1013 | |
3979877e SF |
1014 | /* Security Flags: indicate type of session setup needed */ |
1015 | #define CIFSSEC_MAY_SIGN 0x00001 | |
1016 | #define CIFSSEC_MAY_NTLM 0x00002 | |
1017 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
1018 | #define CIFSSEC_MAY_KRB5 0x00008 | |
1019 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1020 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
1021 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
1022 | #else |
1023 | #define CIFSSEC_MAY_LANMAN 0 | |
1024 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
1025 | #endif /* weak passwords */ |
1026 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 1027 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
1028 | |
1029 | #define CIFSSEC_MUST_SIGN 0x01001 | |
1030 | /* note that only one of the following can be set so the | |
1031 | result of setting MUST flags more than once will be to | |
1032 | require use of the stronger protocol */ | |
1033 | #define CIFSSEC_MUST_NTLM 0x02002 | |
1034 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
1035 | #define CIFSSEC_MUST_KRB5 0x08008 | |
1036 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
1037 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
1038 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 1039 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 1040 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 1041 | #else |
20d1752f | 1042 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 1043 | #endif /* UPCALL */ |
0d3a01fa | 1044 | #else /* do not allow weak pw hash */ |
88a4412b SF |
1045 | #define CIFSSEC_MUST_LANMAN 0 |
1046 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 1047 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 1048 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 1049 | #else |
ac683924 | 1050 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 1051 | #endif /* UPCALL */ |
3979877e SF |
1052 | #endif /* WEAK_PW_HASH */ |
1053 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 1054 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 1055 | |
ef571cad SP |
1056 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
1057 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 1058 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
1059 | /* |
1060 | ***************************************************************** | |
1061 | * All constants go here | |
1062 | ***************************************************************** | |
1063 | */ | |
1064 | ||
1065 | #define UID_HASH (16) | |
1066 | ||
1067 | /* | |
1068 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
1069 | * following to be declared. | |
1070 | */ | |
1071 | ||
1072 | /**************************************************************************** | |
1073 | * Locking notes. All updates to global variables and lists should be | |
1074 | * protected by spinlocks or semaphores. | |
1075 | * | |
1076 | * Spinlocks | |
1077 | * --------- | |
1078 | * GlobalMid_Lock protects: | |
1079 | * list operations on pending_mid_q and oplockQ | |
1080 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 1081 | * cifs_file_list_lock protects: |
1da177e4 LT |
1082 | * list operations on tcp and SMB session lists and tCon lists |
1083 | * f_owner.lock protects certain per file struct operations | |
1084 | * mapping->page_lock protects certain per page operations | |
1085 | * | |
1086 | * Semaphores | |
1087 | * ---------- | |
1088 | * sesSem operations on smb session | |
1089 | * tconSem operations on tree connection | |
d38d8c74 | 1090 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1091 | * |
1092 | ****************************************************************************/ | |
1093 | ||
1094 | #ifdef DECLARE_GLOBALS_HERE | |
1095 | #define GLOBAL_EXTERN | |
1096 | #else | |
1097 | #define GLOBAL_EXTERN extern | |
1098 | #endif | |
1099 | ||
e7ddee90 JL |
1100 | /* |
1101 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1102 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1103 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1104 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1105 | * by iterating over cifs_tcp_ses_list |
1106 | */ | |
1107 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1108 | ||
f1987b44 JL |
1109 | /* |
1110 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1111 | * tcp session, and the list of tcon's per smb session. It also protects | |
1112 | * the reference counters for the server, smb session, and tcon. Finally, | |
1113 | * changes to the tcon->tidStatus should be done while holding this lock. | |
1114 | */ | |
3f9bcca7 | 1115 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
1116 | |
1117 | /* | |
1118 | * This lock protects the cifs_file->llist and cifs_file->flist | |
1119 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
1120 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
1121 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
1122 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
1123 | */ | |
4477288a | 1124 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 1125 | |
0eff0e26 | 1126 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1127 | /* Outstanding dir notify requests */ |
1128 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1129 | /* DirNotify response queue */ | |
1130 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1131 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1132 | |
1da177e4 LT |
1133 | /* |
1134 | * Global transaction id (XID) information | |
1135 | */ | |
1136 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1137 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1138 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1139 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1140 | /* on midQ entries */ | |
1da177e4 LT |
1141 | /* |
1142 | * Global counters, updated atomically | |
1143 | */ | |
1144 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1145 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1146 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1147 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1148 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1149 | ||
aaa9bbe0 | 1150 | /* Various Debug counters */ |
4498eed5 SF |
1151 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1152 | #ifdef CONFIG_CIFS_STATS2 | |
1153 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1154 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1155 | #endif | |
1156 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1157 | GLOBAL_EXTERN atomic_t midCount; |
1158 | ||
1159 | /* Misc globals */ | |
5e500ed1 | 1160 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1da177e4 | 1161 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 1162 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1163 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
1164 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1165 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1166 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1167 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1168 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1169 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1170 | ||
21fed0d5 | 1171 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1172 | GLOBAL_EXTERN struct rb_root uidtree; |
1173 | GLOBAL_EXTERN struct rb_root gidtree; | |
1174 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1175 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1176 | GLOBAL_EXTERN struct rb_root siduidtree; |
1177 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1178 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1179 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1180 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1181 | |
9b646972 | 1182 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1183 | |
3bc303c2 | 1184 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1185 | extern struct workqueue_struct *cifsiod_wq; |
abd2e44d | 1186 | |
2dc7e1c0 PS |
1187 | extern mempool_t *cifs_mid_poolp; |
1188 | ||
23db65f5 JL |
1189 | /* Operations for different SMB versions */ |
1190 | #define SMB1_VERSION_STRING "1.0" | |
1191 | extern struct smb_version_operations smb1_operations; | |
1192 | extern struct smb_version_values smb1_values; | |
1080ef75 SF |
1193 | #define SMB21_VERSION_STRING "2.1" |
1194 | extern struct smb_version_operations smb21_operations; | |
1195 | extern struct smb_version_values smb21_values; | |
abd2e44d | 1196 | #endif /* _CIFS_GLOB_H */ |