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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
5815449d | 4 | * Copyright (C) International Business Machines Corp., 2002,2006 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | */ | |
18 | #include <linux/in.h> | |
19 | #include <linux/in6.h> | |
20 | #include "cifs_fs_sb.h" | |
21 | /* | |
22 | * The sizes of various internal tables and strings | |
23 | */ | |
24 | #define MAX_UID_INFO 16 | |
25 | #define MAX_SES_INFO 2 | |
26 | #define MAX_TCON_INFO 4 | |
27 | ||
28 | #define MAX_TREE_SIZE 2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1 | |
29 | #define MAX_SERVER_SIZE 15 | |
30 | #define MAX_SHARE_SIZE 64 /* used to be 20 - this should still be enough */ | |
31 | #define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null | |
32 | termination then *2 for unicode versions */ | |
33 | #define MAX_PASSWORD_SIZE 16 | |
34 | ||
35 | #define CIFS_MIN_RCV_POOL 4 | |
36 | ||
37 | /* | |
38 | * MAX_REQ is the maximum number of requests that WE will send | |
39 | * on one socket concurently. It also matches the most common | |
40 | * value of max multiplex returned by servers. We may | |
41 | * eventually want to use the negotiated value (in case | |
42 | * future servers can handle more) when we are more confident that | |
43 | * we will not have problems oveloading the socket with pending | |
44 | * write data. | |
45 | */ | |
46 | #define CIFS_MAX_REQ 50 | |
47 | ||
48 | #define SERVER_NAME_LENGTH 15 | |
49 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) | |
50 | ||
51 | /* used to define string lengths for reversing unicode strings */ | |
52 | /* (256+1)*2 = 514 */ | |
53 | /* (max path length + 1 for null) * 2 for unicode */ | |
54 | #define MAX_NAME 514 | |
55 | ||
56 | #include "cifspdu.h" | |
57 | ||
58 | #ifndef FALSE | |
59 | #define FALSE 0 | |
60 | #endif | |
61 | ||
62 | #ifndef TRUE | |
63 | #define TRUE 1 | |
64 | #endif | |
65 | ||
66 | #ifndef XATTR_DOS_ATTRIB | |
67 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
68 | #endif | |
69 | ||
70 | /* | |
71 | * This information is kept on every Server we know about. | |
72 | * | |
73 | * Some things to note: | |
74 | * | |
75 | */ | |
76 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) | |
77 | ||
78 | /* | |
79 | * CIFS vfs client Status information (based on what we know.) | |
80 | */ | |
81 | ||
82 | /* associated with each tcp and smb session */ | |
83 | enum statusEnum { | |
84 | CifsNew = 0, | |
85 | CifsGood, | |
86 | CifsExiting, | |
87 | CifsNeedReconnect | |
88 | }; | |
89 | ||
90 | enum securityEnum { | |
91 | NTLM = 0, /* Legacy NTLM012 auth with NTLM hash */ | |
92 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ | |
93 | RawNTLMSSP, /* NTLMSSP without SPNEGO */ | |
94 | NTLMSSP, /* NTLMSSP via SPNEGO */ | |
95 | Kerberos /* Kerberos via SPNEGO */ | |
96 | }; | |
97 | ||
98 | enum protocolEnum { | |
99 | IPV4 = 0, | |
100 | IPV6, | |
101 | SCTP | |
102 | /* Netbios frames protocol not supported at this time */ | |
103 | }; | |
104 | ||
105 | /* | |
106 | ***************************************************************** | |
107 | * Except the CIFS PDUs themselves all the | |
108 | * globally interesting structs should go here | |
109 | ***************************************************************** | |
110 | */ | |
111 | ||
112 | struct TCP_Server_Info { | |
a10faeb2 SF |
113 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
114 | char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL]; | |
d3485d37 | 115 | char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2]; |
1da177e4 LT |
116 | struct socket *ssocket; |
117 | union { | |
118 | struct sockaddr_in sockAddr; | |
119 | struct sockaddr_in6 sockAddr6; | |
120 | } addr; | |
121 | wait_queue_head_t response_q; | |
122 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ | |
123 | struct list_head pending_mid_q; | |
124 | void *Server_NlsInfo; /* BB - placeholder for future NLS info */ | |
125 | unsigned short server_codepage; /* codepage for the server */ | |
131afd0b | 126 | unsigned long ip_address; /* IP addr for the server if known */ |
1da177e4 LT |
127 | enum protocolEnum protocolType; |
128 | char versionMajor; | |
129 | char versionMinor; | |
130 | unsigned svlocal:1; /* local server or remote */ | |
131 | atomic_t socketUseCount; /* number of open cifs sessions on socket */ | |
132 | atomic_t inFlight; /* number of requests on the wire to server */ | |
131afd0b SF |
133 | #ifdef CONFIG_CIFS_STATS2 |
134 | atomic_t inSend; /* requests trying to send */ | |
135 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
136 | #endif | |
1da177e4 LT |
137 | enum statusEnum tcpStatus; /* what we think the status is */ |
138 | struct semaphore tcpSem; | |
139 | struct task_struct *tsk; | |
140 | char server_GUID[16]; | |
141 | char secMode; | |
142 | enum securityEnum secType; | |
143 | unsigned int maxReq; /* Clients should submit no more */ | |
144 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
145 | /* multiplexed reads or writes */ | |
146 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
147 | /* message size the server can send or receive for non-raw SMBs */ | |
148 | unsigned int maxRw; /* maxRw specifies the maximum */ | |
149 | /* message size the server can send or receive for */ | |
150 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
151 | char sessid[4]; /* unique token id for this session */ | |
152 | /* (returned on Negotiate */ | |
153 | int capabilities; /* allow selective disabling of caps by smb sess */ | |
154 | __u16 timeZone; | |
1982c344 | 155 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
1da177e4 | 156 | char cryptKey[CIFS_CRYPTO_KEY_SIZE]; |
a10faeb2 SF |
157 | /* 16th byte of RFC1001 workstation name is always null */ |
158 | char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL]; | |
ad009ac9 SF |
159 | __u32 sequence_number; /* needed for CIFS PDU signature */ |
160 | char mac_signing_key[CIFS_SESSION_KEY_SIZE + 16]; | |
1da177e4 LT |
161 | }; |
162 | ||
163 | /* | |
164 | * The following is our shortcut to user information. We surface the uid, | |
165 | * and name. We always get the password on the fly in case it | |
166 | * has changed. We also hang a list of sessions owned by this user off here. | |
167 | */ | |
168 | struct cifsUidInfo { | |
169 | struct list_head userList; | |
170 | struct list_head sessionList; /* SMB sessions for this user */ | |
171 | uid_t linux_uid; | |
172 | char user[MAX_USERNAME_SIZE + 1]; /* ascii name of user */ | |
173 | /* BB may need ptr or callback for PAM or WinBind info */ | |
174 | }; | |
175 | ||
176 | /* | |
177 | * Session structure. One of these for each uid session with a particular host | |
178 | */ | |
179 | struct cifsSesInfo { | |
180 | struct list_head cifsSessionList; | |
181 | struct semaphore sesSem; | |
182 | struct cifsUidInfo *uidInfo; /* pointer to user info */ | |
183 | struct TCP_Server_Info *server; /* pointer to server info */ | |
184 | atomic_t inUse; /* # of mounts (tree connections) on this ses */ | |
185 | enum statusEnum status; | |
1da177e4 LT |
186 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
187 | __u16 flags; | |
ad009ac9 SF |
188 | char *serverOS; /* name of operating system underlying server */ |
189 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
190 | char *serverDomain; /* security realm of server */ |
191 | int Suid; /* remote smb uid */ | |
192 | uid_t linux_uid; /* local Linux uid */ | |
193 | int capabilities; | |
ad009ac9 SF |
194 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
195 | TCP names - will ipv6 and sctp addresses fit? */ | |
1da177e4 LT |
196 | char userName[MAX_USERNAME_SIZE + 1]; |
197 | char domainName[MAX_USERNAME_SIZE + 1]; | |
198 | char * password; | |
199 | }; | |
200 | /* session flags */ | |
201 | #define CIFS_SES_NT4 1 | |
202 | ||
203 | /* | |
204 | * there is one of these for each connection to a resource on a particular | |
205 | * session | |
206 | */ | |
207 | struct cifsTconInfo { | |
208 | struct list_head cifsConnectionList; | |
209 | struct list_head openFileList; | |
210 | struct semaphore tconSem; | |
211 | struct cifsSesInfo *ses; /* pointer to session associated with */ | |
212 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource (in ASCII not UTF) */ | |
213 | char *nativeFileSystem; | |
214 | __u16 tid; /* The 2 byte tree id */ | |
215 | __u16 Flags; /* optional support bits */ | |
216 | enum statusEnum tidStatus; | |
217 | atomic_t useCount; /* how many mounts (explicit or implicit) to this share */ | |
218 | #ifdef CONFIG_CIFS_STATS | |
219 | atomic_t num_smbs_sent; | |
220 | atomic_t num_writes; | |
221 | atomic_t num_reads; | |
222 | atomic_t num_oplock_brks; | |
223 | atomic_t num_opens; | |
a5a2b489 | 224 | atomic_t num_closes; |
1da177e4 LT |
225 | atomic_t num_deletes; |
226 | atomic_t num_mkdirs; | |
227 | atomic_t num_rmdirs; | |
228 | atomic_t num_renames; | |
229 | atomic_t num_t2renames; | |
dfb7533b SF |
230 | atomic_t num_ffirst; |
231 | atomic_t num_fnext; | |
232 | atomic_t num_fclose; | |
a5a2b489 SF |
233 | atomic_t num_hardlinks; |
234 | atomic_t num_symlinks; | |
235 | atomic_t num_locks; | |
0a4b92c0 SF |
236 | atomic_t num_acl_get; |
237 | atomic_t num_acl_set; | |
a5a2b489 SF |
238 | #ifdef CONFIG_CIFS_STATS2 |
239 | unsigned long long time_writes; | |
240 | unsigned long long time_reads; | |
241 | unsigned long long time_opens; | |
242 | unsigned long long time_deletes; | |
243 | unsigned long long time_closes; | |
244 | unsigned long long time_mkdirs; | |
245 | unsigned long long time_rmdirs; | |
246 | unsigned long long time_renames; | |
247 | unsigned long long time_t2renames; | |
248 | unsigned long long time_ffirst; | |
249 | unsigned long long time_fnext; | |
250 | unsigned long long time_fclose; | |
251 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
252 | __u64 bytes_read; |
253 | __u64 bytes_written; | |
254 | spinlock_t stat_lock; | |
a5a2b489 | 255 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 LT |
256 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
257 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if file system name truncated */ | |
258 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; | |
259 | unsigned retry:1; | |
d3485d37 | 260 | unsigned nocase:1; |
1da177e4 LT |
261 | /* BB add field for back pointer to sb struct? */ |
262 | }; | |
263 | ||
264 | /* | |
265 | * This info hangs off the cifsFileInfo structure. This is used to track | |
266 | * byte stream locks on the file | |
267 | */ | |
268 | struct cifsLockInfo { | |
269 | struct cifsLockInfo *next; | |
270 | int start; | |
271 | int length; | |
272 | int type; | |
273 | }; | |
274 | ||
275 | /* | |
276 | * One of these for each open instance of a file | |
277 | */ | |
278 | struct cifs_search_info { | |
279 | loff_t index_of_last_entry; | |
280 | __u16 entries_in_buffer; | |
281 | __u16 info_level; | |
282 | __u32 resume_key; | |
283 | char * ntwrk_buf_start; | |
284 | char * srch_entries_start; | |
285 | char * presume_name; | |
286 | unsigned int resume_name_len; | |
287 | unsigned endOfSearch:1; | |
288 | unsigned emptyDir:1; | |
289 | unsigned unicode:1; | |
ec637e3f | 290 | unsigned smallBuf:1; /* so we know which buf_release function to call */ |
1da177e4 LT |
291 | }; |
292 | ||
293 | struct cifsFileInfo { | |
294 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
295 | struct list_head flist; /* next fid (file instance) for this inode */ | |
296 | unsigned int uid; /* allows finding which FileInfo structure */ | |
297 | __u32 pid; /* process id who opened file */ | |
298 | __u16 netfid; /* file id from remote */ | |
299 | /* BB add lock scope info here if needed */ ; | |
300 | /* lock scope id (0 if none) */ | |
301 | struct file * pfile; /* needed for writepage */ | |
302 | struct inode * pInode; /* needed for oplock break */ | |
303 | unsigned closePend:1; /* file is marked to close */ | |
304 | unsigned invalidHandle:1; /* file closed via session abend */ | |
23e7dd7d | 305 | atomic_t wrtPending; /* handle in use - defer close */ |
1da177e4 LT |
306 | struct semaphore fh_sem; /* prevents reopen race after dead ses*/ |
307 | char * search_resume_name; /* BB removeme BB */ | |
308 | unsigned int resume_name_length; /* BB removeme - field renamed and moved BB */ | |
309 | struct cifs_search_info srch_inf; | |
310 | }; | |
311 | ||
312 | /* | |
313 | * One of these for each file inode | |
314 | */ | |
315 | ||
316 | struct cifsInodeInfo { | |
317 | struct list_head lockList; | |
318 | /* BB add in lists for dirty pages - i.e. write caching info for oplock */ | |
319 | struct list_head openFileList; | |
320 | int write_behind_rc; | |
321 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ | |
322 | atomic_t inUse; /* num concurrent users (local openers cifs) of file*/ | |
323 | unsigned long time; /* jiffies of last update/check of inode */ | |
324 | unsigned clientCanCacheRead:1; /* read oplock */ | |
325 | unsigned clientCanCacheAll:1; /* read and writebehind oplock */ | |
326 | unsigned oplockPending:1; | |
327 | struct inode vfs_inode; | |
328 | }; | |
329 | ||
330 | static inline struct cifsInodeInfo * | |
331 | CIFS_I(struct inode *inode) | |
332 | { | |
333 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
334 | } | |
335 | ||
336 | static inline struct cifs_sb_info * | |
337 | CIFS_SB(struct super_block *sb) | |
338 | { | |
339 | return sb->s_fs_info; | |
340 | } | |
341 | ||
ab2f218f | 342 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
343 | { |
344 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
345 | return '/'; | |
346 | else | |
347 | return '\\'; | |
348 | } | |
1da177e4 | 349 | |
a4544347 SF |
350 | #ifdef CONFIG_CIFS_STATS |
351 | #define cifs_stats_inc atomic_inc | |
352 | ||
353 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, | |
354 | unsigned int bytes) | |
355 | { | |
356 | if (bytes) { | |
357 | spin_lock(&tcon->stat_lock); | |
358 | tcon->bytes_written += bytes; | |
359 | spin_unlock(&tcon->stat_lock); | |
360 | } | |
361 | } | |
362 | ||
363 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, | |
364 | unsigned int bytes) | |
365 | { | |
366 | spin_lock(&tcon->stat_lock); | |
367 | tcon->bytes_read += bytes; | |
368 | spin_unlock(&tcon->stat_lock); | |
369 | } | |
370 | #else | |
371 | ||
372 | #define cifs_stats_inc(field) do {} while(0) | |
373 | #define cifs_stats_bytes_written(tcon, bytes) do {} while(0) | |
374 | #define cifs_stats_bytes_read(tcon, bytes) do {} while(0) | |
375 | ||
376 | #endif | |
377 | ||
1da177e4 LT |
378 | /* one of these for every pending CIFS request to the server */ |
379 | struct mid_q_entry { | |
380 | struct list_head qhead; /* mids waiting on reply from this server */ | |
381 | __u16 mid; /* multiplex id */ | |
382 | __u16 pid; /* process id */ | |
383 | __u32 sequence_number; /* for CIFS signing */ | |
1047abc1 SF |
384 | unsigned long when_alloc; /* when mid was created */ |
385 | #ifdef CONFIG_CIFS_STATS2 | |
386 | unsigned long when_sent; /* time when smb send finished */ | |
387 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
388 | #endif | |
1da177e4 LT |
389 | struct cifsSesInfo *ses; /* smb was sent to this server */ |
390 | struct task_struct *tsk; /* task waiting for response */ | |
391 | struct smb_hdr *resp_buf; /* response buffer */ | |
392 | int midState; /* wish this were enum but can not pass to wait_event */ | |
c81156dd SF |
393 | __u8 command; /* smb command code */ |
394 | unsigned multiPart:1; /* multiple responses to one SMB request */ | |
395 | unsigned largeBuf:1; /* if valid response, is pointer to large buf */ | |
79944bf7 | 396 | unsigned multiResp:1; /* multiple trans2 responses for one request */ |
1da177e4 LT |
397 | }; |
398 | ||
399 | struct oplock_q_entry { | |
400 | struct list_head qhead; | |
401 | struct inode * pinode; | |
402 | struct cifsTconInfo * tcon; | |
403 | __u16 netfid; | |
404 | }; | |
405 | ||
ff5dbd9e SF |
406 | /* for pending dnotify requests */ |
407 | struct dir_notify_req { | |
408 | struct list_head lhead; | |
409 | __le16 Pid; | |
410 | __le16 PidHigh; | |
411 | __u16 Mid; | |
412 | __u16 Tid; | |
413 | __u16 Uid; | |
414 | __u16 netfid; | |
415 | __u32 filter; /* CompletionFilter (for multishot) */ | |
416 | int multishot; | |
e22cb8bc | 417 | struct file * pfile; |
ff5dbd9e SF |
418 | }; |
419 | ||
1da177e4 LT |
420 | #define MID_FREE 0 |
421 | #define MID_REQUEST_ALLOCATED 1 | |
422 | #define MID_REQUEST_SUBMITTED 2 | |
423 | #define MID_RESPONSE_RECEIVED 4 | |
424 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
425 | #define MID_NO_RESP_NEEDED 0x10 | |
ec637e3f SF |
426 | |
427 | /* Types of response buffer returned from SendReceive2 */ | |
428 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
429 | #define CIFS_SMALL_BUFFER 1 | |
430 | #define CIFS_LARGE_BUFFER 2 | |
431 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 432 | |
5815449d SF |
433 | /* Type of session setup needed */ |
434 | #define CIFS_PLAINTEXT 0 | |
435 | #define CIFS_LANMAN 1 | |
436 | #define CIFS_NTLM 2 | |
437 | #define CIFS_NTLMSSP_NEG 3 | |
438 | #define CIFS_NTLMSSP_AUTH 4 | |
439 | #define CIFS_SPNEGO_INIT 5 | |
440 | #define CIFS_SPNEGO_TARG 6 | |
441 | ||
1da177e4 LT |
442 | /* |
443 | ***************************************************************** | |
444 | * All constants go here | |
445 | ***************************************************************** | |
446 | */ | |
447 | ||
448 | #define UID_HASH (16) | |
449 | ||
450 | /* | |
451 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
452 | * following to be declared. | |
453 | */ | |
454 | ||
455 | /**************************************************************************** | |
456 | * Locking notes. All updates to global variables and lists should be | |
457 | * protected by spinlocks or semaphores. | |
458 | * | |
459 | * Spinlocks | |
460 | * --------- | |
461 | * GlobalMid_Lock protects: | |
462 | * list operations on pending_mid_q and oplockQ | |
463 | * updates to XID counters, multiplex id and SMB sequence numbers | |
464 | * GlobalSMBSesLock protects: | |
465 | * list operations on tcp and SMB session lists and tCon lists | |
466 | * f_owner.lock protects certain per file struct operations | |
467 | * mapping->page_lock protects certain per page operations | |
468 | * | |
469 | * Semaphores | |
470 | * ---------- | |
471 | * sesSem operations on smb session | |
472 | * tconSem operations on tree connection | |
473 | * fh_sem file handle reconnection operations | |
474 | * | |
475 | ****************************************************************************/ | |
476 | ||
477 | #ifdef DECLARE_GLOBALS_HERE | |
478 | #define GLOBAL_EXTERN | |
479 | #else | |
480 | #define GLOBAL_EXTERN extern | |
481 | #endif | |
482 | ||
483 | /* | |
484 | * The list of servers that did not respond with NT LM 0.12. | |
485 | * This list helps improve performance and eliminate the messages indicating | |
486 | * that we had a communications error talking to the server in this list. | |
487 | */ | |
488 | GLOBAL_EXTERN struct servers_not_supported *NotSuppList; /*@z4a */ | |
489 | ||
490 | /* | |
491 | * The following is a hash table of all the users we know about. | |
492 | */ | |
493 | GLOBAL_EXTERN struct smbUidInfo *GlobalUidList[UID_HASH]; | |
494 | ||
495 | GLOBAL_EXTERN struct list_head GlobalServerList; /* BB not implemented yet */ | |
496 | GLOBAL_EXTERN struct list_head GlobalSMBSessionList; | |
497 | GLOBAL_EXTERN struct list_head GlobalTreeConnectionList; | |
498 | GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */ | |
499 | ||
500 | GLOBAL_EXTERN struct list_head GlobalOplock_Q; | |
501 | ||
ff5dbd9e SF |
502 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; /* Outstanding dir notify requests */ |
503 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; /* Dir notify response queue */ | |
504 | ||
1da177e4 LT |
505 | /* |
506 | * Global transaction id (XID) information | |
507 | */ | |
508 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
509 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ | |
510 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ | |
511 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above and list operations */ | |
512 | /* on midQ entries */ | |
513 | GLOBAL_EXTERN char Local_System_Name[15]; | |
514 | ||
515 | /* | |
516 | * Global counters, updated atomically | |
517 | */ | |
518 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
519 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
520 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
521 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
522 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
523 | ||
524 | /* Various Debug counters to remove someday (BB) */ | |
4498eed5 SF |
525 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
526 | #ifdef CONFIG_CIFS_STATS2 | |
527 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
528 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
529 | #endif | |
530 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
531 | GLOBAL_EXTERN atomic_t midCount; |
532 | ||
533 | /* Misc globals */ | |
534 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions | |
535 | to be established on existing mount if we | |
536 | have the uid/password or Kerberos credential | |
537 | or equivalent for current user */ | |
538 | GLOBAL_EXTERN unsigned int oplockEnabled; | |
539 | GLOBAL_EXTERN unsigned int experimEnabled; | |
540 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; | |
541 | GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent | |
542 | with more secure ntlmssp2 challenge/resp */ | |
543 | GLOBAL_EXTERN unsigned int ntlmv2_support; /* better optional password hash */ | |
544 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ | |
545 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
546 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
547 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
548 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
549 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
550 |