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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
d38d8c74 | 4 | * Copyright (C) International Business Machines Corp., 2002,2007 |
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 LT |
18 | */ |
19 | #include <linux/in.h> | |
20 | #include <linux/in6.h> | |
21 | #include "cifs_fs_sb.h" | |
442aa310 | 22 | #include "cifsacl.h" |
1da177e4 LT |
23 | /* |
24 | * The sizes of various internal tables and strings | |
25 | */ | |
26 | #define MAX_UID_INFO 16 | |
27 | #define MAX_SES_INFO 2 | |
28 | #define MAX_TCON_INFO 4 | |
29 | ||
30 | #define MAX_TREE_SIZE 2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1 | |
31 | #define MAX_SERVER_SIZE 15 | |
d38d8c74 | 32 | #define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */ |
1da177e4 LT |
33 | #define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null |
34 | termination then *2 for unicode versions */ | |
35 | #define MAX_PASSWORD_SIZE 16 | |
36 | ||
37 | #define CIFS_MIN_RCV_POOL 4 | |
38 | ||
39 | /* | |
40 | * MAX_REQ is the maximum number of requests that WE will send | |
41 | * on one socket concurently. It also matches the most common | |
d38d8c74 | 42 | * value of max multiplex returned by servers. We may |
1da177e4 LT |
43 | * eventually want to use the negotiated value (in case |
44 | * future servers can handle more) when we are more confident that | |
45 | * we will not have problems oveloading the socket with pending | |
46 | * write data. | |
47 | */ | |
d38d8c74 | 48 | #define CIFS_MAX_REQ 50 |
1da177e4 LT |
49 | |
50 | #define SERVER_NAME_LENGTH 15 | |
51 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) | |
52 | ||
53 | /* used to define string lengths for reversing unicode strings */ | |
54 | /* (256+1)*2 = 514 */ | |
55 | /* (max path length + 1 for null) * 2 for unicode */ | |
56 | #define MAX_NAME 514 | |
57 | ||
58 | #include "cifspdu.h" | |
59 | ||
60 | #ifndef FALSE | |
61 | #define FALSE 0 | |
62 | #endif | |
63 | ||
64 | #ifndef TRUE | |
65 | #define TRUE 1 | |
66 | #endif | |
67 | ||
68 | #ifndef XATTR_DOS_ATTRIB | |
69 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
70 | #endif | |
71 | ||
72 | /* | |
73 | * This information is kept on every Server we know about. | |
74 | * | |
75 | * Some things to note: | |
76 | * | |
77 | */ | |
78 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) | |
79 | ||
80 | /* | |
81 | * CIFS vfs client Status information (based on what we know.) | |
82 | */ | |
83 | ||
84 | /* associated with each tcp and smb session */ | |
85 | enum statusEnum { | |
86 | CifsNew = 0, | |
87 | CifsGood, | |
88 | CifsExiting, | |
89 | CifsNeedReconnect | |
90 | }; | |
91 | ||
92 | enum securityEnum { | |
a013689d SF |
93 | PLAINTXT = 0, /* Legacy with Plaintext passwords */ |
94 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 95 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 LT |
96 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
97 | RawNTLMSSP, /* NTLMSSP without SPNEGO */ | |
98 | NTLMSSP, /* NTLMSSP via SPNEGO */ | |
99 | Kerberos /* Kerberos via SPNEGO */ | |
100 | }; | |
101 | ||
102 | enum protocolEnum { | |
103 | IPV4 = 0, | |
104 | IPV6, | |
105 | SCTP | |
106 | /* Netbios frames protocol not supported at this time */ | |
107 | }; | |
108 | ||
b609f06a SF |
109 | struct mac_key { |
110 | unsigned int len; | |
111 | union { | |
112 | char ntlm[CIFS_SESS_KEY_SIZE + 16]; | |
2442421b | 113 | char krb5[CIFS_SESS_KEY_SIZE + 16]; /* BB: length correct? */ |
b609f06a SF |
114 | struct { |
115 | char key[16]; | |
116 | struct ntlmv2_resp resp; | |
117 | } ntlmv2; | |
118 | } data; | |
119 | }; | |
120 | ||
442aa310 SF |
121 | struct cifs_cred { |
122 | int uid; | |
123 | int gid; | |
124 | int mode; | |
125 | int cecount; | |
126 | struct cifs_sid osid; | |
127 | struct cifs_sid gsid; | |
128 | struct cifs_ntace *ntaces; | |
129 | struct cifs_ace *aces; | |
130 | }; | |
131 | ||
1da177e4 LT |
132 | /* |
133 | ***************************************************************** | |
134 | * Except the CIFS PDUs themselves all the | |
135 | * globally interesting structs should go here | |
136 | ***************************************************************** | |
137 | */ | |
138 | ||
139 | struct TCP_Server_Info { | |
a10faeb2 SF |
140 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
141 | char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL]; | |
d3485d37 | 142 | char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2]; |
c359cf3c | 143 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 LT |
144 | struct socket *ssocket; |
145 | union { | |
146 | struct sockaddr_in sockAddr; | |
147 | struct sockaddr_in6 sockAddr6; | |
148 | } addr; | |
d38d8c74 | 149 | wait_queue_head_t response_q; |
1da177e4 LT |
150 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
151 | struct list_head pending_mid_q; | |
152 | void *Server_NlsInfo; /* BB - placeholder for future NLS info */ | |
153 | unsigned short server_codepage; /* codepage for the server */ | |
131afd0b | 154 | unsigned long ip_address; /* IP addr for the server if known */ |
d38d8c74 | 155 | enum protocolEnum protocolType; |
1da177e4 LT |
156 | char versionMajor; |
157 | char versionMinor; | |
158 | unsigned svlocal:1; /* local server or remote */ | |
159 | atomic_t socketUseCount; /* number of open cifs sessions on socket */ | |
160 | atomic_t inFlight; /* number of requests on the wire to server */ | |
131afd0b SF |
161 | #ifdef CONFIG_CIFS_STATS2 |
162 | atomic_t inSend; /* requests trying to send */ | |
163 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
164 | #endif | |
1da177e4 LT |
165 | enum statusEnum tcpStatus; /* what we think the status is */ |
166 | struct semaphore tcpSem; | |
167 | struct task_struct *tsk; | |
168 | char server_GUID[16]; | |
169 | char secMode; | |
170 | enum securityEnum secType; | |
171 | unsigned int maxReq; /* Clients should submit no more */ | |
172 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
173 | /* multiplexed reads or writes */ | |
174 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
175 | /* message size the server can send or receive for non-raw SMBs */ | |
176 | unsigned int maxRw; /* maxRw specifies the maximum */ | |
177 | /* message size the server can send or receive for */ | |
178 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
179 | char sessid[4]; /* unique token id for this session */ | |
180 | /* (returned on Negotiate */ | |
181 | int capabilities; /* allow selective disabling of caps by smb sess */ | |
de7ed55d | 182 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
1982c344 | 183 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
1da177e4 | 184 | char cryptKey[CIFS_CRYPTO_KEY_SIZE]; |
a10faeb2 SF |
185 | /* 16th byte of RFC1001 workstation name is always null */ |
186 | char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL]; | |
ad009ac9 | 187 | __u32 sequence_number; /* needed for CIFS PDU signature */ |
b609f06a SF |
188 | struct mac_key mac_signing_key; |
189 | char ntlmv2_hash[16]; | |
3a5ff61c | 190 | unsigned long lstrp; /* when we got last response from this server */ |
1da177e4 LT |
191 | }; |
192 | ||
193 | /* | |
194 | * The following is our shortcut to user information. We surface the uid, | |
195 | * and name. We always get the password on the fly in case it | |
d38d8c74 | 196 | * has changed. We also hang a list of sessions owned by this user off here. |
1da177e4 LT |
197 | */ |
198 | struct cifsUidInfo { | |
199 | struct list_head userList; | |
200 | struct list_head sessionList; /* SMB sessions for this user */ | |
201 | uid_t linux_uid; | |
202 | char user[MAX_USERNAME_SIZE + 1]; /* ascii name of user */ | |
203 | /* BB may need ptr or callback for PAM or WinBind info */ | |
204 | }; | |
205 | ||
206 | /* | |
207 | * Session structure. One of these for each uid session with a particular host | |
208 | */ | |
209 | struct cifsSesInfo { | |
210 | struct list_head cifsSessionList; | |
211 | struct semaphore sesSem; | |
3979877e | 212 | #if 0 |
1da177e4 | 213 | struct cifsUidInfo *uidInfo; /* pointer to user info */ |
3979877e | 214 | #endif |
1da177e4 LT |
215 | struct TCP_Server_Info *server; /* pointer to server info */ |
216 | atomic_t inUse; /* # of mounts (tree connections) on this ses */ | |
217 | enum statusEnum status; | |
750d1151 | 218 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
219 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
220 | __u16 flags; | |
ad009ac9 SF |
221 | char *serverOS; /* name of operating system underlying server */ |
222 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
223 | char *serverDomain; /* security realm of server */ |
224 | int Suid; /* remote smb uid */ | |
225 | uid_t linux_uid; /* local Linux uid */ | |
226 | int capabilities; | |
d38d8c74 | 227 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 228 | TCP names - will ipv6 and sctp addresses fit? */ |
1da177e4 | 229 | char userName[MAX_USERNAME_SIZE + 1]; |
d38d8c74 SF |
230 | char *domainName; |
231 | char *password; | |
1da177e4 | 232 | }; |
9ac00b7d | 233 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 234 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
235 | #define CIFS_SES_OS2 2 |
236 | #define CIFS_SES_W9X 4 | |
237 | /* following flag is set for old servers such as OS2 (and Win95?) | |
238 | which do not negotiate NTLM or POSIX dialects, but instead | |
239 | negotiate one of the older LANMAN dialects */ | |
240 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
241 | /* |
242 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 243 | * session |
1da177e4 LT |
244 | */ |
245 | struct cifsTconInfo { | |
246 | struct list_head cifsConnectionList; | |
247 | struct list_head openFileList; | |
248 | struct semaphore tconSem; | |
249 | struct cifsSesInfo *ses; /* pointer to session associated with */ | |
254e55ed | 250 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 LT |
251 | char *nativeFileSystem; |
252 | __u16 tid; /* The 2 byte tree id */ | |
253 | __u16 Flags; /* optional support bits */ | |
254 | enum statusEnum tidStatus; | |
254e55ed | 255 | atomic_t useCount; /* how many explicit/implicit mounts to share */ |
1da177e4 LT |
256 | #ifdef CONFIG_CIFS_STATS |
257 | atomic_t num_smbs_sent; | |
258 | atomic_t num_writes; | |
259 | atomic_t num_reads; | |
260 | atomic_t num_oplock_brks; | |
261 | atomic_t num_opens; | |
a5a2b489 | 262 | atomic_t num_closes; |
1da177e4 LT |
263 | atomic_t num_deletes; |
264 | atomic_t num_mkdirs; | |
265 | atomic_t num_rmdirs; | |
266 | atomic_t num_renames; | |
267 | atomic_t num_t2renames; | |
dfb7533b SF |
268 | atomic_t num_ffirst; |
269 | atomic_t num_fnext; | |
270 | atomic_t num_fclose; | |
a5a2b489 SF |
271 | atomic_t num_hardlinks; |
272 | atomic_t num_symlinks; | |
273 | atomic_t num_locks; | |
0a4b92c0 SF |
274 | atomic_t num_acl_get; |
275 | atomic_t num_acl_set; | |
a5a2b489 SF |
276 | #ifdef CONFIG_CIFS_STATS2 |
277 | unsigned long long time_writes; | |
278 | unsigned long long time_reads; | |
279 | unsigned long long time_opens; | |
280 | unsigned long long time_deletes; | |
281 | unsigned long long time_closes; | |
282 | unsigned long long time_mkdirs; | |
283 | unsigned long long time_rmdirs; | |
284 | unsigned long long time_renames; | |
285 | unsigned long long time_t2renames; | |
286 | unsigned long long time_ffirst; | |
287 | unsigned long long time_fnext; | |
288 | unsigned long long time_fclose; | |
289 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
290 | __u64 bytes_read; |
291 | __u64 bytes_written; | |
292 | spinlock_t stat_lock; | |
a5a2b489 | 293 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 294 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 295 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 296 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
7f8ed420 | 297 | unsigned ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
1da177e4 | 298 | unsigned retry:1; |
d3485d37 | 299 | unsigned nocase:1; |
c18c842b SF |
300 | unsigned unix_ext:1; /* if off disable Linux extensions to CIFS protocol |
301 | for this mount even if server would support */ | |
302 | /* BB add field for back pointer to sb struct(s)? */ | |
1da177e4 LT |
303 | }; |
304 | ||
305 | /* | |
7ee1af76 JA |
306 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
307 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
308 | */ |
309 | struct cifsLockInfo { | |
7ee1af76 JA |
310 | struct list_head llist; /* pointer to next cifsLockInfo */ |
311 | __u64 offset; | |
312 | __u64 length; | |
313 | __u8 type; | |
1da177e4 LT |
314 | }; |
315 | ||
316 | /* | |
317 | * One of these for each open instance of a file | |
318 | */ | |
319 | struct cifs_search_info { | |
320 | loff_t index_of_last_entry; | |
321 | __u16 entries_in_buffer; | |
322 | __u16 info_level; | |
323 | __u32 resume_key; | |
d38d8c74 SF |
324 | char *ntwrk_buf_start; |
325 | char *srch_entries_start; | |
326 | char *presume_name; | |
1da177e4 LT |
327 | unsigned int resume_name_len; |
328 | unsigned endOfSearch:1; | |
329 | unsigned emptyDir:1; | |
330 | unsigned unicode:1; | |
ec637e3f | 331 | unsigned smallBuf:1; /* so we know which buf_release function to call */ |
1da177e4 LT |
332 | }; |
333 | ||
334 | struct cifsFileInfo { | |
335 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
336 | struct list_head flist; /* next fid (file instance) for this inode */ | |
337 | unsigned int uid; /* allows finding which FileInfo structure */ | |
338 | __u32 pid; /* process id who opened file */ | |
339 | __u16 netfid; /* file id from remote */ | |
340 | /* BB add lock scope info here if needed */ ; | |
341 | /* lock scope id (0 if none) */ | |
d38d8c74 SF |
342 | struct file *pfile; /* needed for writepage */ |
343 | struct inode *pInode; /* needed for oplock break */ | |
796e5661 | 344 | struct mutex lock_mutex; |
7ee1af76 | 345 | struct list_head llist; /* list of byte range locks we have. */ |
1da177e4 LT |
346 | unsigned closePend:1; /* file is marked to close */ |
347 | unsigned invalidHandle:1; /* file closed via session abend */ | |
92ad9b93 | 348 | unsigned messageMode:1; /* for pipes: message vs byte mode */ |
23e7dd7d | 349 | atomic_t wrtPending; /* handle in use - defer close */ |
1da177e4 | 350 | struct semaphore fh_sem; /* prevents reopen race after dead ses*/ |
d38d8c74 | 351 | char *search_resume_name; /* BB removeme BB */ |
1da177e4 LT |
352 | struct cifs_search_info srch_inf; |
353 | }; | |
354 | ||
355 | /* | |
356 | * One of these for each file inode | |
357 | */ | |
358 | ||
359 | struct cifsInodeInfo { | |
360 | struct list_head lockList; | |
d38d8c74 | 361 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 LT |
362 | struct list_head openFileList; |
363 | int write_behind_rc; | |
364 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ | |
365 | atomic_t inUse; /* num concurrent users (local openers cifs) of file*/ | |
366 | unsigned long time; /* jiffies of last update/check of inode */ | |
367 | unsigned clientCanCacheRead:1; /* read oplock */ | |
368 | unsigned clientCanCacheAll:1; /* read and writebehind oplock */ | |
369 | unsigned oplockPending:1; | |
370 | struct inode vfs_inode; | |
371 | }; | |
372 | ||
373 | static inline struct cifsInodeInfo * | |
374 | CIFS_I(struct inode *inode) | |
375 | { | |
376 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
377 | } | |
378 | ||
379 | static inline struct cifs_sb_info * | |
380 | CIFS_SB(struct super_block *sb) | |
381 | { | |
382 | return sb->s_fs_info; | |
383 | } | |
384 | ||
ab2f218f | 385 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
386 | { |
387 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
388 | return '/'; | |
389 | else | |
390 | return '\\'; | |
391 | } | |
1da177e4 | 392 | |
a4544347 SF |
393 | #ifdef CONFIG_CIFS_STATS |
394 | #define cifs_stats_inc atomic_inc | |
395 | ||
396 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, | |
397 | unsigned int bytes) | |
398 | { | |
399 | if (bytes) { | |
400 | spin_lock(&tcon->stat_lock); | |
401 | tcon->bytes_written += bytes; | |
402 | spin_unlock(&tcon->stat_lock); | |
403 | } | |
404 | } | |
405 | ||
406 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, | |
407 | unsigned int bytes) | |
408 | { | |
409 | spin_lock(&tcon->stat_lock); | |
410 | tcon->bytes_read += bytes; | |
411 | spin_unlock(&tcon->stat_lock); | |
412 | } | |
413 | #else | |
414 | ||
d38d8c74 SF |
415 | #define cifs_stats_inc(field) do {} while (0) |
416 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
417 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
418 | |
419 | #endif | |
420 | ||
1da177e4 LT |
421 | /* one of these for every pending CIFS request to the server */ |
422 | struct mid_q_entry { | |
423 | struct list_head qhead; /* mids waiting on reply from this server */ | |
424 | __u16 mid; /* multiplex id */ | |
425 | __u16 pid; /* process id */ | |
426 | __u32 sequence_number; /* for CIFS signing */ | |
1047abc1 SF |
427 | unsigned long when_alloc; /* when mid was created */ |
428 | #ifdef CONFIG_CIFS_STATS2 | |
429 | unsigned long when_sent; /* time when smb send finished */ | |
430 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
431 | #endif | |
1da177e4 LT |
432 | struct cifsSesInfo *ses; /* smb was sent to this server */ |
433 | struct task_struct *tsk; /* task waiting for response */ | |
434 | struct smb_hdr *resp_buf; /* response buffer */ | |
435 | int midState; /* wish this were enum but can not pass to wait_event */ | |
c81156dd | 436 | __u8 command; /* smb command code */ |
c81156dd | 437 | unsigned largeBuf:1; /* if valid response, is pointer to large buf */ |
3979877e SF |
438 | unsigned multiRsp:1; /* multiple trans2 responses for one request */ |
439 | unsigned multiEnd:1; /* both received */ | |
1da177e4 LT |
440 | }; |
441 | ||
442 | struct oplock_q_entry { | |
443 | struct list_head qhead; | |
d38d8c74 SF |
444 | struct inode *pinode; |
445 | struct cifsTconInfo *tcon; | |
1da177e4 LT |
446 | __u16 netfid; |
447 | }; | |
448 | ||
ff5dbd9e SF |
449 | /* for pending dnotify requests */ |
450 | struct dir_notify_req { | |
451 | struct list_head lhead; | |
452 | __le16 Pid; | |
453 | __le16 PidHigh; | |
454 | __u16 Mid; | |
455 | __u16 Tid; | |
456 | __u16 Uid; | |
457 | __u16 netfid; | |
458 | __u32 filter; /* CompletionFilter (for multishot) */ | |
459 | int multishot; | |
d38d8c74 | 460 | struct file *pfile; |
ff5dbd9e SF |
461 | }; |
462 | ||
1da177e4 LT |
463 | #define MID_FREE 0 |
464 | #define MID_REQUEST_ALLOCATED 1 | |
465 | #define MID_REQUEST_SUBMITTED 2 | |
466 | #define MID_RESPONSE_RECEIVED 4 | |
467 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
468 | #define MID_NO_RESP_NEEDED 0x10 | |
ec637e3f SF |
469 | |
470 | /* Types of response buffer returned from SendReceive2 */ | |
471 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
472 | #define CIFS_SMALL_BUFFER 1 | |
473 | #define CIFS_LARGE_BUFFER 2 | |
474 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 475 | |
133672ef SF |
476 | /* Type of Request to SendReceive2 */ |
477 | #define CIFS_STD_OP 0 /* normal request timeout */ | |
478 | #define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */ | |
479 | #define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */ | |
480 | #define CIFS_BLOCKING_OP 4 /* operation can block */ | |
481 | #define CIFS_ASYNC_OP 8 /* do not wait for response */ | |
482 | #define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */ | |
483 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ | |
484 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
485 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
486 | ||
3979877e SF |
487 | /* Security Flags: indicate type of session setup needed */ |
488 | #define CIFSSEC_MAY_SIGN 0x00001 | |
489 | #define CIFSSEC_MAY_NTLM 0x00002 | |
490 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
491 | #define CIFSSEC_MAY_KRB5 0x00008 | |
492 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
493 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
494 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
495 | #else |
496 | #define CIFSSEC_MAY_LANMAN 0 | |
497 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
498 | #endif /* weak passwords */ |
499 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
500 | ||
501 | #define CIFSSEC_MUST_SIGN 0x01001 | |
502 | /* note that only one of the following can be set so the | |
503 | result of setting MUST flags more than once will be to | |
504 | require use of the stronger protocol */ | |
505 | #define CIFSSEC_MUST_NTLM 0x02002 | |
506 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
507 | #define CIFSSEC_MUST_KRB5 0x08008 | |
508 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
509 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
510 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa JL |
511 | #ifdef CONFIG_CIFS_UPCALL |
512 | #define CIFSSEC_MASK 0x3F03F /* allows weak security but also krb5 */ | |
513 | #else | |
3979877e | 514 | #define CIFSSEC_MASK 0x37037 /* current flags supported if weak */ |
016ec75f | 515 | #endif /* UPCALL */ |
0d3a01fa JL |
516 | #else /* do not allow weak pw hash */ |
517 | #ifdef CONFIG_CIFS_UPCALL | |
518 | #define CIFSSEC_MASK 0x0F00F /* flags supported if no weak allowed */ | |
d38d8c74 | 519 | #else |
0d3a01fa | 520 | #define CIFSSEC_MASK 0x07007 /* flags supported if no weak allowed */ |
016ec75f | 521 | #endif /* UPCALL */ |
3979877e SF |
522 | #endif /* WEAK_PW_HASH */ |
523 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
524 | ||
525 | #define CIFSSEC_DEF CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | |
526 | #define CIFSSEC_MAX CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2 | |
a013689d | 527 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5) |
1da177e4 LT |
528 | /* |
529 | ***************************************************************** | |
530 | * All constants go here | |
531 | ***************************************************************** | |
532 | */ | |
533 | ||
534 | #define UID_HASH (16) | |
535 | ||
536 | /* | |
537 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
538 | * following to be declared. | |
539 | */ | |
540 | ||
541 | /**************************************************************************** | |
542 | * Locking notes. All updates to global variables and lists should be | |
543 | * protected by spinlocks or semaphores. | |
544 | * | |
545 | * Spinlocks | |
546 | * --------- | |
547 | * GlobalMid_Lock protects: | |
548 | * list operations on pending_mid_q and oplockQ | |
549 | * updates to XID counters, multiplex id and SMB sequence numbers | |
550 | * GlobalSMBSesLock protects: | |
551 | * list operations on tcp and SMB session lists and tCon lists | |
552 | * f_owner.lock protects certain per file struct operations | |
553 | * mapping->page_lock protects certain per page operations | |
554 | * | |
555 | * Semaphores | |
556 | * ---------- | |
557 | * sesSem operations on smb session | |
558 | * tconSem operations on tree connection | |
d38d8c74 | 559 | * fh_sem file handle reconnection operations |
1da177e4 LT |
560 | * |
561 | ****************************************************************************/ | |
562 | ||
563 | #ifdef DECLARE_GLOBALS_HERE | |
564 | #define GLOBAL_EXTERN | |
565 | #else | |
566 | #define GLOBAL_EXTERN extern | |
567 | #endif | |
568 | ||
569 | /* | |
570 | * The list of servers that did not respond with NT LM 0.12. | |
571 | * This list helps improve performance and eliminate the messages indicating | |
d38d8c74 | 572 | * that we had a communications error talking to the server in this list. |
1da177e4 | 573 | */ |
2cd646a2 SF |
574 | /* Feature not supported */ |
575 | /* GLOBAL_EXTERN struct servers_not_supported *NotSuppList; */ | |
1da177e4 LT |
576 | |
577 | /* | |
578 | * The following is a hash table of all the users we know about. | |
579 | */ | |
580 | GLOBAL_EXTERN struct smbUidInfo *GlobalUidList[UID_HASH]; | |
581 | ||
99ee4dbd | 582 | /* GLOBAL_EXTERN struct list_head GlobalServerList; BB not implemented yet */ |
1da177e4 LT |
583 | GLOBAL_EXTERN struct list_head GlobalSMBSessionList; |
584 | GLOBAL_EXTERN struct list_head GlobalTreeConnectionList; | |
585 | GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */ | |
586 | ||
587 | GLOBAL_EXTERN struct list_head GlobalOplock_Q; | |
588 | ||
99ee4dbd SF |
589 | /* Outstanding dir notify requests */ |
590 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
591 | /* DirNotify response queue */ | |
592 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
ff5dbd9e | 593 | |
1da177e4 LT |
594 | /* |
595 | * Global transaction id (XID) information | |
596 | */ | |
597 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 598 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 599 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
600 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
601 | /* on midQ entries */ | |
1da177e4 LT |
602 | GLOBAL_EXTERN char Local_System_Name[15]; |
603 | ||
604 | /* | |
605 | * Global counters, updated atomically | |
606 | */ | |
607 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
608 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
609 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
610 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
611 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
612 | ||
613 | /* Various Debug counters to remove someday (BB) */ | |
4498eed5 SF |
614 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
615 | #ifdef CONFIG_CIFS_STATS2 | |
616 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
617 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
618 | #endif | |
619 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
620 | GLOBAL_EXTERN atomic_t midCount; |
621 | ||
622 | /* Misc globals */ | |
254e55ed | 623 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions |
1da177e4 | 624 | to be established on existing mount if we |
d38d8c74 | 625 | have the uid/password or Kerberos credential |
1da177e4 LT |
626 | or equivalent for current user */ |
627 | GLOBAL_EXTERN unsigned int oplockEnabled; | |
628 | GLOBAL_EXTERN unsigned int experimEnabled; | |
629 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; | |
d38d8c74 | 630 | GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent |
1da177e4 | 631 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
632 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
633 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
634 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
635 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
636 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
637 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
638 |