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> |
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 | |
af901ca1 | 58 | * on one socket concurrently. It also matches the most common |
d38d8c74 | 59 | * value of max multiplex returned by servers. We may |
1da177e4 LT |
60 | * eventually want to use the negotiated value (in case |
61 | * future servers can handle more) when we are more confident that | |
62 | * we will not have problems oveloading the socket with pending | |
63 | * write data. | |
64 | */ | |
d38d8c74 | 65 | #define CIFS_MAX_REQ 50 |
1da177e4 | 66 | |
8ecaf67a JL |
67 | #define RFC1001_NAME_LEN 15 |
68 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
69 | ||
70 | /* currently length of NIP6_FMT */ | |
71 | #define SERVER_NAME_LENGTH 40 | |
1da177e4 LT |
72 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
73 | ||
74 | /* used to define string lengths for reversing unicode strings */ | |
75 | /* (256+1)*2 = 514 */ | |
76 | /* (max path length + 1 for null) * 2 for unicode */ | |
77 | #define MAX_NAME 514 | |
78 | ||
79 | #include "cifspdu.h" | |
80 | ||
1da177e4 LT |
81 | #ifndef XATTR_DOS_ATTRIB |
82 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
83 | #endif | |
84 | ||
1da177e4 LT |
85 | /* |
86 | * CIFS vfs client Status information (based on what we know.) | |
87 | */ | |
88 | ||
6c0f6218 | 89 | /* associated with each tcp and smb session */ |
1da177e4 LT |
90 | enum statusEnum { |
91 | CifsNew = 0, | |
92 | CifsGood, | |
93 | CifsExiting, | |
fd88ce93 SF |
94 | CifsNeedReconnect, |
95 | CifsNeedNegotiate | |
1da177e4 LT |
96 | }; |
97 | ||
98 | enum securityEnum { | |
daf5b0b6 | 99 | LANMAN = 0, /* Legacy LANMAN auth */ |
3979877e | 100 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 101 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 102 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
f46c7234 | 103 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ |
c16fefa5 | 104 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
105 | }; |
106 | ||
107 | enum protocolEnum { | |
3ec332ef | 108 | TCP = 0, |
1da177e4 LT |
109 | SCTP |
110 | /* Netbios frames protocol not supported at this time */ | |
111 | }; | |
112 | ||
5f98ca9a | 113 | struct session_key { |
b609f06a | 114 | unsigned int len; |
21e73393 | 115 | char *response; |
b609f06a SF |
116 | }; |
117 | ||
d2b91521 SP |
118 | /* crypto security descriptor definition */ |
119 | struct sdesc { | |
120 | struct shash_desc shash; | |
121 | char ctx[]; | |
122 | }; | |
123 | ||
f7c5445a | 124 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
125 | struct cifs_secmech { |
126 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
127 | struct crypto_shash *md5; /* md5 hash function */ | |
128 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ | |
129 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
130 | }; | |
131 | ||
d3686d54 | 132 | /* per smb session structure/fields */ |
d2b91521 SP |
133 | struct ntlmssp_auth { |
134 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ | |
135 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
136 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 137 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
138 | }; |
139 | ||
442aa310 SF |
140 | struct cifs_cred { |
141 | int uid; | |
142 | int gid; | |
143 | int mode; | |
144 | int cecount; | |
145 | struct cifs_sid osid; | |
146 | struct cifs_sid gsid; | |
147 | struct cifs_ntace *ntaces; | |
148 | struct cifs_ace *aces; | |
149 | }; | |
150 | ||
1da177e4 LT |
151 | /* |
152 | ***************************************************************** | |
153 | * Except the CIFS PDUs themselves all the | |
154 | * globally interesting structs should go here | |
155 | ***************************************************************** | |
156 | */ | |
157 | ||
f87d39d9 SF |
158 | struct smb_vol { |
159 | char *username; | |
160 | char *password; | |
161 | char *domainname; | |
162 | char *UNC; | |
163 | char *UNCip; | |
164 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
165 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
166 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
167 | uid_t cred_uid; | |
168 | uid_t linux_uid; | |
169 | gid_t linux_gid; | |
3d3ea8e6 SP |
170 | uid_t backupuid; |
171 | gid_t backupgid; | |
f87d39d9 SF |
172 | mode_t file_mode; |
173 | mode_t dir_mode; | |
174 | unsigned secFlg; | |
175 | bool retry:1; | |
176 | bool intr:1; | |
177 | bool setuids:1; | |
178 | bool override_uid:1; | |
179 | bool override_gid:1; | |
180 | bool dynperm:1; | |
181 | bool noperm:1; | |
182 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
183 | bool cifs_acl:1; | |
3d3ea8e6 SP |
184 | bool backupuid_specified; /* mount option backupuid is specified */ |
185 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
186 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
187 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
188 | bool direct_io:1; | |
189 | bool strict_io:1; /* strict cache behavior */ | |
190 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
191 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
192 | bool no_linux_ext:1; | |
193 | bool sfu_emul:1; | |
194 | bool nullauth:1; /* attempt to authenticate with null user */ | |
195 | bool nocase:1; /* request case insensitive filenames */ | |
196 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
197 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
198 | bool seal:1; /* request transport encryption on share */ | |
199 | bool nodfs:1; /* Do not request DFS, even if available */ | |
200 | bool local_lease:1; /* check leases only on local system, not remote */ | |
201 | bool noblocksnd:1; | |
202 | bool noautotune:1; | |
203 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
204 | bool fsc:1; /* enable fscache */ | |
205 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
206 | bool multiuser:1; | |
d4ffff1f | 207 | bool rwpidforward:1; /* pid forward for read/write operations */ |
f87d39d9 SF |
208 | unsigned int rsize; |
209 | unsigned int wsize; | |
210 | bool sockopt_tcp_nodelay:1; | |
211 | unsigned short int port; | |
212 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ | |
213 | char *prepath; | |
214 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ | |
215 | struct nls_table *local_nls; | |
216 | }; | |
217 | ||
25c7f41e PS |
218 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
219 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
220 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
221 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ | |
222 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
223 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
224 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
225 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
226 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
227 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
228 | |
229 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
230 | MS_NODEV | MS_SYNCHRONOUS) | |
231 | ||
232 | struct cifs_mnt_data { | |
233 | struct cifs_sb_info *cifs_sb; | |
234 | struct smb_vol *vol; | |
235 | int flags; | |
236 | }; | |
237 | ||
1da177e4 | 238 | struct TCP_Server_Info { |
3b795210 SF |
239 | struct list_head tcp_ses_list; |
240 | struct list_head smb_ses_list; | |
e7ddee90 | 241 | int srv_count; /* reference counter */ |
a10faeb2 | 242 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 243 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
c3dccf48 | 244 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 245 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 246 | struct socket *ssocket; |
a9f1b85e | 247 | struct sockaddr_storage dstaddr; |
3eb9a889 | 248 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
249 | #ifdef CONFIG_NET_NS |
250 | struct net *net; | |
251 | #endif | |
d38d8c74 | 252 | wait_queue_head_t response_q; |
1da177e4 LT |
253 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
254 | struct list_head pending_mid_q; | |
edf1ae40 SF |
255 | bool noblocksnd; /* use blocking sendmsg */ |
256 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 257 | bool tcp_nodelay; |
1da177e4 | 258 | atomic_t inFlight; /* number of requests on the wire to server */ |
72ca545b | 259 | struct mutex srv_mutex; |
1da177e4 LT |
260 | struct task_struct *tsk; |
261 | char server_GUID[16]; | |
96daf2b0 | 262 | char sec_mode; |
c3dccf48 JL |
263 | bool session_estab; /* mark when very first sess is established */ |
264 | u16 dialect; /* dialect index that server chose */ | |
1da177e4 LT |
265 | enum securityEnum secType; |
266 | unsigned int maxReq; /* Clients should submit no more */ | |
267 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
268 | /* multiplexed reads or writes */ | |
269 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
270 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
271 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
272 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 273 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
274 | /* message size the server can send or receive for */ |
275 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
276 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
277 | those that can be specified uniquely with | |
278 | vcnumbers */ | |
1da177e4 | 279 | int capabilities; /* allow selective disabling of caps by smb sess */ |
de7ed55d | 280 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
1982c344 | 281 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 282 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 283 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 284 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 285 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 286 | struct session_key session_key; |
3a5ff61c | 287 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 288 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
26efa0ba | 289 | /* extended security flavors that server supports */ |
c3dccf48 JL |
290 | bool sec_ntlmssp; /* supports NTLMSSP */ |
291 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
292 | bool sec_kerberos; /* supports plain Kerberos */ |
293 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
c74093b6 | 294 | struct delayed_work echo; /* echo ping workqueue job */ |
488f1d2d SJ |
295 | #ifdef CONFIG_CIFS_FSCACHE |
296 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
297 | #endif | |
c3dccf48 | 298 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 299 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
300 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
301 | #endif | |
1da177e4 LT |
302 | }; |
303 | ||
f1d0c998 RL |
304 | /* |
305 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
306 | * when CONFIG_NET_NS isn't set. | |
307 | */ | |
308 | ||
309 | #ifdef CONFIG_NET_NS | |
310 | ||
311 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
312 | { | |
313 | return srv->net; | |
314 | } | |
315 | ||
316 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
317 | { | |
318 | srv->net = net; | |
319 | } | |
320 | ||
321 | #else | |
322 | ||
323 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
324 | { | |
325 | return &init_net; | |
326 | } | |
327 | ||
328 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
329 | { | |
330 | } | |
331 | ||
332 | #endif | |
333 | ||
1da177e4 LT |
334 | /* |
335 | * Session structure. One of these for each uid session with a particular host | |
336 | */ | |
96daf2b0 | 337 | struct cifs_ses { |
14fbf50d | 338 | struct list_head smb_ses_list; |
3b795210 | 339 | struct list_head tcon_list; |
d7b619cf | 340 | struct mutex session_mutex; |
1da177e4 | 341 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 342 | int ses_count; /* reference counter */ |
1da177e4 | 343 | enum statusEnum status; |
750d1151 | 344 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
345 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
346 | __u16 flags; | |
eca6acf9 | 347 | __u16 vcnum; |
ad009ac9 SF |
348 | char *serverOS; /* name of operating system underlying server */ |
349 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
350 | char *serverDomain; /* security realm of server */ |
351 | int Suid; /* remote smb uid */ | |
3e4b3e1f JL |
352 | uid_t linux_uid; /* overriding owner of files on the mount */ |
353 | uid_t cred_uid; /* owner of credentials */ | |
1da177e4 | 354 | int capabilities; |
d38d8c74 | 355 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 356 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
357 | char *user_name; /* must not be null except during init of sess |
358 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
359 | char *domainName; |
360 | char *password; | |
5d0d2882 | 361 | struct session_key auth_key; |
d3686d54 | 362 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
3b795210 | 363 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
1da177e4 | 364 | }; |
9ac00b7d | 365 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 366 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
367 | #define CIFS_SES_OS2 2 |
368 | #define CIFS_SES_W9X 4 | |
369 | /* following flag is set for old servers such as OS2 (and Win95?) | |
370 | which do not negotiate NTLM or POSIX dialects, but instead | |
371 | negotiate one of the older LANMAN dialects */ | |
372 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
373 | /* |
374 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 375 | * session |
1da177e4 | 376 | */ |
96daf2b0 | 377 | struct cifs_tcon { |
f1987b44 JL |
378 | struct list_head tcon_list; |
379 | int tc_count; | |
1da177e4 | 380 | struct list_head openFileList; |
96daf2b0 | 381 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 382 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 383 | char *nativeFileSystem; |
00e485b0 | 384 | char *password; /* for share-level security */ |
1da177e4 LT |
385 | __u16 tid; /* The 2 byte tree id */ |
386 | __u16 Flags; /* optional support bits */ | |
387 | enum statusEnum tidStatus; | |
1da177e4 LT |
388 | #ifdef CONFIG_CIFS_STATS |
389 | atomic_t num_smbs_sent; | |
390 | atomic_t num_writes; | |
391 | atomic_t num_reads; | |
b298f223 | 392 | atomic_t num_flushes; |
1da177e4 LT |
393 | atomic_t num_oplock_brks; |
394 | atomic_t num_opens; | |
a5a2b489 | 395 | atomic_t num_closes; |
1da177e4 LT |
396 | atomic_t num_deletes; |
397 | atomic_t num_mkdirs; | |
65bc98b0 SF |
398 | atomic_t num_posixopens; |
399 | atomic_t num_posixmkdirs; | |
1da177e4 LT |
400 | atomic_t num_rmdirs; |
401 | atomic_t num_renames; | |
402 | atomic_t num_t2renames; | |
dfb7533b SF |
403 | atomic_t num_ffirst; |
404 | atomic_t num_fnext; | |
405 | atomic_t num_fclose; | |
a5a2b489 SF |
406 | atomic_t num_hardlinks; |
407 | atomic_t num_symlinks; | |
408 | atomic_t num_locks; | |
0a4b92c0 SF |
409 | atomic_t num_acl_get; |
410 | atomic_t num_acl_set; | |
a5a2b489 SF |
411 | #ifdef CONFIG_CIFS_STATS2 |
412 | unsigned long long time_writes; | |
413 | unsigned long long time_reads; | |
414 | unsigned long long time_opens; | |
415 | unsigned long long time_deletes; | |
416 | unsigned long long time_closes; | |
417 | unsigned long long time_mkdirs; | |
418 | unsigned long long time_rmdirs; | |
419 | unsigned long long time_renames; | |
420 | unsigned long long time_t2renames; | |
421 | unsigned long long time_ffirst; | |
422 | unsigned long long time_fnext; | |
423 | unsigned long long time_fclose; | |
424 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
425 | __u64 bytes_read; |
426 | __u64 bytes_written; | |
427 | spinlock_t stat_lock; | |
a5a2b489 | 428 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 429 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 430 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 431 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
432 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
433 | bool retry:1; | |
434 | bool nocase:1; | |
95b1cb90 | 435 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 436 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 437 | for this mount even if server would support */ |
84210e91 | 438 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 439 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 440 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
d03382ce SJ |
441 | #ifdef CONFIG_CIFS_FSCACHE |
442 | u64 resource_id; /* server resource id */ | |
443 | struct fscache_cookie *fscache; /* cookie for share */ | |
444 | #endif | |
c18c842b | 445 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
446 | }; |
447 | ||
7ffec372 JL |
448 | /* |
449 | * This is a refcounted and timestamped container for a tcon pointer. The | |
450 | * container holds a tcon reference. It is considered safe to free one of | |
451 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
452 | * "get" on the container. | |
453 | */ | |
454 | struct tcon_link { | |
b647c35f JL |
455 | struct rb_node tl_rbnode; |
456 | uid_t tl_uid; | |
9d002df4 JL |
457 | unsigned long tl_flags; |
458 | #define TCON_LINK_MASTER 0 | |
459 | #define TCON_LINK_PENDING 1 | |
460 | #define TCON_LINK_IN_TREE 2 | |
461 | unsigned long tl_time; | |
462 | atomic_t tl_count; | |
96daf2b0 | 463 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
464 | }; |
465 | ||
9d002df4 | 466 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 467 | |
96daf2b0 | 468 | static inline struct cifs_tcon * |
7ffec372 JL |
469 | tlink_tcon(struct tcon_link *tlink) |
470 | { | |
9d002df4 | 471 | return tlink->tl_tcon; |
7ffec372 JL |
472 | } |
473 | ||
9d002df4 | 474 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 475 | |
13cfb733 JL |
476 | static inline struct tcon_link * |
477 | cifs_get_tlink(struct tcon_link *tlink) | |
478 | { | |
9d002df4 JL |
479 | if (tlink && !IS_ERR(tlink)) |
480 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
481 | return tlink; |
482 | } | |
483 | ||
7ffec372 | 484 | /* This function is always expected to succeed */ |
96daf2b0 | 485 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 486 | |
1da177e4 | 487 | /* |
7ee1af76 JA |
488 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
489 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
490 | */ |
491 | struct cifsLockInfo { | |
7ee1af76 JA |
492 | struct list_head llist; /* pointer to next cifsLockInfo */ |
493 | __u64 offset; | |
494 | __u64 length; | |
03776f45 | 495 | __u32 pid; |
7ee1af76 | 496 | __u8 type; |
1da177e4 LT |
497 | }; |
498 | ||
499 | /* | |
500 | * One of these for each open instance of a file | |
501 | */ | |
502 | struct cifs_search_info { | |
503 | loff_t index_of_last_entry; | |
504 | __u16 entries_in_buffer; | |
505 | __u16 info_level; | |
506 | __u32 resume_key; | |
d38d8c74 SF |
507 | char *ntwrk_buf_start; |
508 | char *srch_entries_start; | |
0752f152 | 509 | char *last_entry; |
eaf35b1e | 510 | const char *presume_name; |
1da177e4 | 511 | unsigned int resume_name_len; |
4b18f2a9 SF |
512 | bool endOfSearch:1; |
513 | bool emptyDir:1; | |
514 | bool unicode:1; | |
515 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
516 | }; |
517 | ||
518 | struct cifsFileInfo { | |
519 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
520 | struct list_head flist; /* next fid (file instance) for this inode */ | |
521 | unsigned int uid; /* allows finding which FileInfo structure */ | |
522 | __u32 pid; /* process id who opened file */ | |
523 | __u16 netfid; /* file id from remote */ | |
524 | /* BB add lock scope info here if needed */ ; | |
525 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 526 | struct dentry *dentry; |
15886177 | 527 | unsigned int f_flags; |
13cfb733 | 528 | struct tcon_link *tlink; |
796e5661 | 529 | struct mutex lock_mutex; |
7ee1af76 | 530 | struct list_head llist; /* list of byte range locks we have. */ |
4b18f2a9 | 531 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 532 | bool oplock_break_cancelled:1; |
6c0f6218 | 533 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 534 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 535 | struct cifs_search_info srch_inf; |
9b646972 | 536 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
537 | }; |
538 | ||
fa2989f4 PS |
539 | struct cifs_io_parms { |
540 | __u16 netfid; | |
541 | __u32 pid; | |
542 | __u64 offset; | |
543 | unsigned int length; | |
96daf2b0 | 544 | struct cifs_tcon *tcon; |
fa2989f4 PS |
545 | }; |
546 | ||
5f6dbc9e JL |
547 | /* |
548 | * Take a reference on the file private data. Must be called with | |
549 | * cifs_file_list_lock held. | |
550 | */ | |
6ab409b5 DK |
551 | static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file) |
552 | { | |
5f6dbc9e | 553 | ++cifs_file->count; |
6ab409b5 DK |
554 | } |
555 | ||
b33879aa | 556 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 557 | |
1da177e4 LT |
558 | /* |
559 | * One of these for each file inode | |
560 | */ | |
561 | ||
562 | struct cifsInodeInfo { | |
563 | struct list_head lockList; | |
d38d8c74 | 564 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 565 | struct list_head openFileList; |
1da177e4 | 566 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
aae62fdb JL |
567 | bool clientCanCacheRead; /* read oplock */ |
568 | bool clientCanCacheAll; /* read and writebehind oplock */ | |
569 | bool delete_pending; /* DELETE_ON_CLOSE is set */ | |
570 | bool invalid_mapping; /* pagecache is invalid */ | |
571 | unsigned long time; /* jiffies of last update of inode */ | |
fbec9ab9 | 572 | u64 server_eof; /* current file size on server */ |
cc0bad75 | 573 | u64 uniqueid; /* server inode number */ |
20054bd6 | 574 | u64 createtime; /* creation time on server */ |
9451a9a5 SJ |
575 | #ifdef CONFIG_CIFS_FSCACHE |
576 | struct fscache_cookie *fscache; | |
577 | #endif | |
1da177e4 LT |
578 | struct inode vfs_inode; |
579 | }; | |
580 | ||
581 | static inline struct cifsInodeInfo * | |
582 | CIFS_I(struct inode *inode) | |
583 | { | |
584 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
585 | } | |
586 | ||
587 | static inline struct cifs_sb_info * | |
588 | CIFS_SB(struct super_block *sb) | |
589 | { | |
590 | return sb->s_fs_info; | |
591 | } | |
592 | ||
ab2f218f | 593 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
594 | { |
595 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
596 | return '/'; | |
597 | else | |
598 | return '\\'; | |
599 | } | |
1da177e4 | 600 | |
f87d39d9 SF |
601 | static inline void |
602 | convert_delimiter(char *path, char delim) | |
603 | { | |
604 | int i; | |
605 | char old_delim; | |
606 | ||
607 | if (path == NULL) | |
608 | return; | |
609 | ||
610 | if (delim == '/') | |
611 | old_delim = '\\'; | |
612 | else | |
613 | old_delim = '/'; | |
614 | ||
615 | for (i = 0; path[i] != '\0'; i++) { | |
616 | if (path[i] == old_delim) | |
617 | path[i] = delim; | |
618 | } | |
619 | } | |
620 | ||
a4544347 SF |
621 | #ifdef CONFIG_CIFS_STATS |
622 | #define cifs_stats_inc atomic_inc | |
623 | ||
96daf2b0 | 624 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
625 | unsigned int bytes) |
626 | { | |
627 | if (bytes) { | |
628 | spin_lock(&tcon->stat_lock); | |
629 | tcon->bytes_written += bytes; | |
630 | spin_unlock(&tcon->stat_lock); | |
631 | } | |
632 | } | |
633 | ||
96daf2b0 | 634 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
635 | unsigned int bytes) |
636 | { | |
637 | spin_lock(&tcon->stat_lock); | |
638 | tcon->bytes_read += bytes; | |
639 | spin_unlock(&tcon->stat_lock); | |
640 | } | |
641 | #else | |
642 | ||
d38d8c74 SF |
643 | #define cifs_stats_inc(field) do {} while (0) |
644 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
645 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
646 | |
647 | #endif | |
648 | ||
2b84a36c JL |
649 | struct mid_q_entry; |
650 | ||
651 | /* | |
652 | * This is the prototype for the mid callback function. When creating one, | |
653 | * take special care to avoid deadlocks. Things to bear in mind: | |
654 | * | |
3c1105df JL |
655 | * - it will be called by cifsd, with no locks held |
656 | * - the mid will be removed from any lists | |
2b84a36c JL |
657 | */ |
658 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
659 | ||
1da177e4 LT |
660 | /* one of these for every pending CIFS request to the server */ |
661 | struct mid_q_entry { | |
662 | struct list_head qhead; /* mids waiting on reply from this server */ | |
663 | __u16 mid; /* multiplex id */ | |
664 | __u16 pid; /* process id */ | |
665 | __u32 sequence_number; /* for CIFS signing */ | |
1047abc1 SF |
666 | unsigned long when_alloc; /* when mid was created */ |
667 | #ifdef CONFIG_CIFS_STATS2 | |
668 | unsigned long when_sent; /* time when smb send finished */ | |
669 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
670 | #endif | |
2b84a36c JL |
671 | mid_callback_t *callback; /* call completion callback */ |
672 | void *callback_data; /* general purpose pointer for callback */ | |
1da177e4 LT |
673 | struct smb_hdr *resp_buf; /* response buffer */ |
674 | int midState; /* wish this were enum but can not pass to wait_event */ | |
c81156dd | 675 | __u8 command; /* smb command code */ |
4b18f2a9 SF |
676 | bool largeBuf:1; /* if valid response, is pointer to large buf */ |
677 | bool multiRsp:1; /* multiple trans2 responses for one request */ | |
678 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
679 | }; |
680 | ||
789e6661 SF |
681 | /* Make code in transport.c a little cleaner by moving |
682 | update of optional stats into function below */ | |
683 | #ifdef CONFIG_CIFS_STATS2 | |
684 | ||
685 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
686 | { | |
687 | atomic_inc(&server->in_send); | |
688 | } | |
689 | ||
690 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
691 | { | |
692 | atomic_dec(&server->in_send); | |
693 | } | |
694 | ||
695 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
696 | { | |
697 | atomic_inc(&server->num_waiters); | |
698 | } | |
699 | ||
700 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
701 | { | |
702 | atomic_dec(&server->num_waiters); | |
703 | } | |
704 | ||
705 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
706 | { | |
707 | mid->when_sent = jiffies; | |
708 | } | |
709 | #else | |
710 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
711 | { | |
712 | } | |
713 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
714 | { | |
715 | } | |
716 | ||
717 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
718 | { | |
719 | } | |
720 | ||
721 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
722 | { | |
723 | } | |
724 | ||
725 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
726 | { | |
727 | } | |
728 | #endif | |
1da177e4 | 729 | |
ff5dbd9e SF |
730 | /* for pending dnotify requests */ |
731 | struct dir_notify_req { | |
13cd4b7f SF |
732 | struct list_head lhead; |
733 | __le16 Pid; | |
734 | __le16 PidHigh; | |
735 | __u16 Mid; | |
736 | __u16 Tid; | |
737 | __u16 Uid; | |
738 | __u16 netfid; | |
739 | __u32 filter; /* CompletionFilter (for multishot) */ | |
740 | int multishot; | |
741 | struct file *pfile; | |
ff5dbd9e SF |
742 | }; |
743 | ||
366781c1 SF |
744 | struct dfs_info3_param { |
745 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 746 | int path_consumed; |
366781c1 SF |
747 | int server_type; |
748 | int ref_flag; | |
749 | char *path_name; | |
750 | char *node_name; | |
751 | }; | |
752 | ||
cc0bad75 JL |
753 | /* |
754 | * common struct for holding inode info when searching for or updating an | |
755 | * inode with new info | |
756 | */ | |
757 | ||
758 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
759 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
760 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 761 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
762 | |
763 | struct cifs_fattr { | |
764 | u32 cf_flags; | |
765 | u32 cf_cifsattrs; | |
766 | u64 cf_uniqueid; | |
767 | u64 cf_eof; | |
768 | u64 cf_bytes; | |
20054bd6 | 769 | u64 cf_createtime; |
cc0bad75 JL |
770 | uid_t cf_uid; |
771 | gid_t cf_gid; | |
772 | umode_t cf_mode; | |
773 | dev_t cf_rdev; | |
774 | unsigned int cf_nlink; | |
775 | unsigned int cf_dtype; | |
776 | struct timespec cf_atime; | |
777 | struct timespec cf_mtime; | |
778 | struct timespec cf_ctime; | |
779 | }; | |
780 | ||
366781c1 SF |
781 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
782 | { | |
783 | if (param) { | |
784 | kfree(param->path_name); | |
785 | kfree(param->node_name); | |
786 | kfree(param); | |
787 | } | |
788 | } | |
789 | ||
790 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
791 | int number_of_items) | |
792 | { | |
793 | int i; | |
794 | if ((number_of_items == 0) || (param == NULL)) | |
795 | return; | |
796 | for (i = 0; i < number_of_items; i++) { | |
797 | kfree(param[i].path_name); | |
798 | kfree(param[i].node_name); | |
799 | } | |
800 | kfree(param); | |
801 | } | |
802 | ||
1da177e4 LT |
803 | #define MID_FREE 0 |
804 | #define MID_REQUEST_ALLOCATED 1 | |
805 | #define MID_REQUEST_SUBMITTED 2 | |
806 | #define MID_RESPONSE_RECEIVED 4 | |
807 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 808 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 809 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
810 | |
811 | /* Types of response buffer returned from SendReceive2 */ | |
812 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
813 | #define CIFS_SMALL_BUFFER 1 | |
814 | #define CIFS_LARGE_BUFFER 2 | |
815 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 816 | |
133672ef | 817 | /* Type of Request to SendReceive2 */ |
7749981e JL |
818 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
819 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
820 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
821 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
822 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
823 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
824 | ||
3979877e SF |
825 | /* Security Flags: indicate type of session setup needed */ |
826 | #define CIFSSEC_MAY_SIGN 0x00001 | |
827 | #define CIFSSEC_MAY_NTLM 0x00002 | |
828 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
829 | #define CIFSSEC_MAY_KRB5 0x00008 | |
830 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
831 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
832 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
833 | #else |
834 | #define CIFSSEC_MAY_LANMAN 0 | |
835 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
836 | #endif /* weak passwords */ |
837 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 838 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
839 | |
840 | #define CIFSSEC_MUST_SIGN 0x01001 | |
841 | /* note that only one of the following can be set so the | |
842 | result of setting MUST flags more than once will be to | |
843 | require use of the stronger protocol */ | |
844 | #define CIFSSEC_MUST_NTLM 0x02002 | |
845 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
846 | #define CIFSSEC_MUST_KRB5 0x08008 | |
847 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
848 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
849 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 850 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 851 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 852 | #else |
20d1752f | 853 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 854 | #endif /* UPCALL */ |
0d3a01fa JL |
855 | #else /* do not allow weak pw hash */ |
856 | #ifdef CONFIG_CIFS_UPCALL | |
ac683924 | 857 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 858 | #else |
ac683924 | 859 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 860 | #endif /* UPCALL */ |
3979877e SF |
861 | #endif /* WEAK_PW_HASH */ |
862 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 863 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 864 | |
ef571cad SP |
865 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
866 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 867 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
868 | /* |
869 | ***************************************************************** | |
870 | * All constants go here | |
871 | ***************************************************************** | |
872 | */ | |
873 | ||
874 | #define UID_HASH (16) | |
875 | ||
876 | /* | |
877 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
878 | * following to be declared. | |
879 | */ | |
880 | ||
881 | /**************************************************************************** | |
882 | * Locking notes. All updates to global variables and lists should be | |
883 | * protected by spinlocks or semaphores. | |
884 | * | |
885 | * Spinlocks | |
886 | * --------- | |
887 | * GlobalMid_Lock protects: | |
888 | * list operations on pending_mid_q and oplockQ | |
889 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 890 | * cifs_file_list_lock protects: |
1da177e4 LT |
891 | * list operations on tcp and SMB session lists and tCon lists |
892 | * f_owner.lock protects certain per file struct operations | |
893 | * mapping->page_lock protects certain per page operations | |
894 | * | |
895 | * Semaphores | |
896 | * ---------- | |
897 | * sesSem operations on smb session | |
898 | * tconSem operations on tree connection | |
d38d8c74 | 899 | * fh_sem file handle reconnection operations |
1da177e4 LT |
900 | * |
901 | ****************************************************************************/ | |
902 | ||
903 | #ifdef DECLARE_GLOBALS_HERE | |
904 | #define GLOBAL_EXTERN | |
905 | #else | |
906 | #define GLOBAL_EXTERN extern | |
907 | #endif | |
908 | ||
e7ddee90 JL |
909 | /* |
910 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 911 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 912 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 913 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
914 | * by iterating over cifs_tcp_ses_list |
915 | */ | |
916 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
917 | ||
f1987b44 JL |
918 | /* |
919 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
920 | * tcp session, and the list of tcon's per smb session. It also protects | |
921 | * the reference counters for the server, smb session, and tcon. Finally, | |
922 | * changes to the tcon->tidStatus should be done while holding this lock. | |
923 | */ | |
3f9bcca7 | 924 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
925 | |
926 | /* | |
927 | * This lock protects the cifs_file->llist and cifs_file->flist | |
928 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
929 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
930 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
931 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
932 | */ | |
4477288a | 933 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 934 | |
0eff0e26 | 935 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
936 | /* Outstanding dir notify requests */ |
937 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
938 | /* DirNotify response queue */ | |
939 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 940 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 941 | |
1da177e4 LT |
942 | /* |
943 | * Global transaction id (XID) information | |
944 | */ | |
945 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 946 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 947 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
948 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
949 | /* on midQ entries */ | |
1da177e4 LT |
950 | /* |
951 | * Global counters, updated atomically | |
952 | */ | |
953 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
954 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
955 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
956 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
957 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
958 | ||
aaa9bbe0 | 959 | /* Various Debug counters */ |
4498eed5 SF |
960 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
961 | #ifdef CONFIG_CIFS_STATS2 | |
962 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
963 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
964 | #endif | |
965 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
966 | GLOBAL_EXTERN atomic_t midCount; |
967 | ||
968 | /* Misc globals */ | |
254e55ed | 969 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions |
1da177e4 | 970 | to be established on existing mount if we |
d38d8c74 | 971 | have the uid/password or Kerberos credential |
1da177e4 | 972 | or equivalent for current user */ |
e7504734 SF |
973 | /* enable or disable oplocks */ |
974 | GLOBAL_EXTERN bool enable_oplocks; | |
1da177e4 | 975 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 976 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 977 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
978 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
979 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
980 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
981 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
982 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
983 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
984 | ||
fda35943 SF |
985 | /* reconnect after this many failed echo attempts */ |
986 | GLOBAL_EXTERN unsigned short echo_retries; | |
987 | ||
21fed0d5 | 988 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
989 | GLOBAL_EXTERN struct rb_root uidtree; |
990 | GLOBAL_EXTERN struct rb_root gidtree; | |
991 | GLOBAL_EXTERN spinlock_t siduidlock; | |
992 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
993 | GLOBAL_EXTERN struct rb_root siduidtree; |
994 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
995 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
996 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
997 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 998 | |
9b646972 | 999 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1000 | |
3bc303c2 | 1001 | extern const struct slow_work_ops cifs_oplock_break_ops; |
abd2e44d SJ |
1002 | |
1003 | #endif /* _CIFS_GLOB_H */ |