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