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1 | /* | |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
4 | * Copyright (C) International Business Machines Corp., 2002,2008 | |
5 | * Author(s): Steve French (sfrench@us.ibm.com) | |
6 | * Jeremy Allison (jra@samba.org) | |
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. | |
17 | * | |
18 | */ | |
19 | #ifndef _CIFS_GLOB_H | |
20 | #define _CIFS_GLOB_H | |
21 | ||
22 | #include <linux/in.h> | |
23 | #include <linux/in6.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/workqueue.h> | |
26 | #include "cifs_fs_sb.h" | |
27 | #include "cifsacl.h" | |
28 | /* | |
29 | * The sizes of various internal tables and strings | |
30 | */ | |
31 | #define MAX_UID_INFO 16 | |
32 | #define MAX_SES_INFO 2 | |
33 | #define MAX_TCON_INFO 4 | |
34 | ||
35 | #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) | |
36 | #define MAX_SERVER_SIZE 15 | |
37 | #define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */ | |
38 | #define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null | |
39 | termination then *2 for unicode versions */ | |
40 | #define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ | |
41 | ||
42 | #define CIFS_MIN_RCV_POOL 4 | |
43 | ||
44 | /* | |
45 | * MAX_REQ is the maximum number of requests that WE will send | |
46 | * on one socket concurrently. It also matches the most common | |
47 | * value of max multiplex returned by servers. We may | |
48 | * eventually want to use the negotiated value (in case | |
49 | * future servers can handle more) when we are more confident that | |
50 | * we will not have problems oveloading the socket with pending | |
51 | * write data. | |
52 | */ | |
53 | #define CIFS_MAX_REQ 50 | |
54 | ||
55 | #define RFC1001_NAME_LEN 15 | |
56 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
57 | ||
58 | /* currently length of NIP6_FMT */ | |
59 | #define SERVER_NAME_LENGTH 40 | |
60 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) | |
61 | ||
62 | /* used to define string lengths for reversing unicode strings */ | |
63 | /* (256+1)*2 = 514 */ | |
64 | /* (max path length + 1 for null) * 2 for unicode */ | |
65 | #define MAX_NAME 514 | |
66 | ||
67 | #include "cifspdu.h" | |
68 | ||
69 | #ifndef XATTR_DOS_ATTRIB | |
70 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
71 | #endif | |
72 | ||
73 | /* | |
74 | * CIFS vfs client Status information (based on what we know.) | |
75 | */ | |
76 | ||
77 | /* associated with each tcp and smb session */ | |
78 | enum statusEnum { | |
79 | CifsNew = 0, | |
80 | CifsGood, | |
81 | CifsExiting, | |
82 | CifsNeedReconnect | |
83 | }; | |
84 | ||
85 | enum securityEnum { | |
86 | LANMAN = 0, /* Legacy LANMAN auth */ | |
87 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ | |
88 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ | |
89 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ | |
90 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ | |
91 | Kerberos, /* Kerberos via SPNEGO */ | |
92 | }; | |
93 | ||
94 | enum protocolEnum { | |
95 | TCP = 0, | |
96 | SCTP | |
97 | /* Netbios frames protocol not supported at this time */ | |
98 | }; | |
99 | ||
100 | struct session_key { | |
101 | unsigned int len; | |
102 | union { | |
103 | char ntlm[CIFS_SESS_KEY_SIZE + 16]; | |
104 | char krb5[CIFS_SESS_KEY_SIZE + 16]; /* BB: length correct? */ | |
105 | struct { | |
106 | char key[16]; | |
107 | struct ntlmv2_resp resp; | |
108 | } ntlmv2; | |
109 | } data; | |
110 | }; | |
111 | ||
112 | struct cifs_cred { | |
113 | int uid; | |
114 | int gid; | |
115 | int mode; | |
116 | int cecount; | |
117 | struct cifs_sid osid; | |
118 | struct cifs_sid gsid; | |
119 | struct cifs_ntace *ntaces; | |
120 | struct cifs_ace *aces; | |
121 | }; | |
122 | ||
123 | /* | |
124 | ***************************************************************** | |
125 | * Except the CIFS PDUs themselves all the | |
126 | * globally interesting structs should go here | |
127 | ***************************************************************** | |
128 | */ | |
129 | ||
130 | struct TCP_Server_Info { | |
131 | struct list_head tcp_ses_list; | |
132 | struct list_head smb_ses_list; | |
133 | int srv_count; /* reference counter */ | |
134 | /* 15 character server name + 0x20 16th byte indicating type = srv */ | |
135 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; | |
136 | char *hostname; /* hostname portion of UNC string */ | |
137 | struct socket *ssocket; | |
138 | union { | |
139 | struct sockaddr_in sockAddr; | |
140 | struct sockaddr_in6 sockAddr6; | |
141 | } addr; | |
142 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ | |
143 | wait_queue_head_t response_q; | |
144 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ | |
145 | struct list_head pending_mid_q; | |
146 | void *Server_NlsInfo; /* BB - placeholder for future NLS info */ | |
147 | unsigned short server_codepage; /* codepage for the server */ | |
148 | enum protocolEnum protocolType; | |
149 | char versionMajor; | |
150 | char versionMinor; | |
151 | bool svlocal:1; /* local server or remote */ | |
152 | bool noblocksnd; /* use blocking sendmsg */ | |
153 | bool noautotune; /* do not autotune send buf sizes */ | |
154 | bool tcp_nodelay; | |
155 | atomic_t inFlight; /* number of requests on the wire to server */ | |
156 | #ifdef CONFIG_CIFS_STATS2 | |
157 | atomic_t inSend; /* requests trying to send */ | |
158 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
159 | #endif | |
160 | enum statusEnum tcpStatus; /* what we think the status is */ | |
161 | struct mutex srv_mutex; | |
162 | struct task_struct *tsk; | |
163 | char server_GUID[16]; | |
164 | char secMode; | |
165 | enum securityEnum secType; | |
166 | unsigned int maxReq; /* Clients should submit no more */ | |
167 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
168 | /* multiplexed reads or writes */ | |
169 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
170 | /* message size the server can send or receive for non-raw SMBs */ | |
171 | unsigned int max_rw; /* maxRw specifies the maximum */ | |
172 | /* message size the server can send or receive for */ | |
173 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
174 | unsigned int max_vcs; /* maximum number of smb sessions, at least | |
175 | those that can be specified uniquely with | |
176 | vcnumbers */ | |
177 | char sessid[4]; /* unique token id for this session */ | |
178 | /* (returned on Negotiate */ | |
179 | int capabilities; /* allow selective disabling of caps by smb sess */ | |
180 | int timeAdj; /* Adjust for difference in server time zone in sec */ | |
181 | __u16 CurrentMid; /* multiplex id - rotating counter */ | |
182 | char cryptKey[CIFS_CRYPTO_KEY_SIZE]; | |
183 | /* 16th byte of RFC1001 workstation name is always null */ | |
184 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; | |
185 | __u32 sequence_number; /* needed for CIFS PDU signature */ | |
186 | struct session_key session_key; | |
187 | char ntlmv2_hash[16]; | |
188 | unsigned long lstrp; /* when we got last response from this server */ | |
189 | u16 dialect; /* dialect index that server chose */ | |
190 | /* extended security flavors that server supports */ | |
191 | bool sec_kerberos; /* supports plain Kerberos */ | |
192 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
193 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
194 | bool sec_ntlmssp; /* supports NTLMSSP */ | |
195 | #ifdef CONFIG_CIFS_FSCACHE | |
196 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
197 | #endif | |
198 | }; | |
199 | ||
200 | /* | |
201 | * Session structure. One of these for each uid session with a particular host | |
202 | */ | |
203 | struct cifsSesInfo { | |
204 | struct list_head smb_ses_list; | |
205 | struct list_head tcon_list; | |
206 | struct mutex session_mutex; | |
207 | struct TCP_Server_Info *server; /* pointer to server info */ | |
208 | int ses_count; /* reference counter */ | |
209 | enum statusEnum status; | |
210 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ | |
211 | __u16 ipc_tid; /* special tid for connection to IPC share */ | |
212 | __u16 flags; | |
213 | __u16 vcnum; | |
214 | char *serverOS; /* name of operating system underlying server */ | |
215 | char *serverNOS; /* name of network operating system of server */ | |
216 | char *serverDomain; /* security realm of server */ | |
217 | int Suid; /* remote smb uid */ | |
218 | uid_t linux_uid; /* overriding owner of files on the mount */ | |
219 | uid_t cred_uid; /* owner of credentials */ | |
220 | int capabilities; | |
221 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for | |
222 | TCP names - will ipv6 and sctp addresses fit? */ | |
223 | char userName[MAX_USERNAME_SIZE + 1]; | |
224 | char *domainName; | |
225 | char *password; | |
226 | unsigned int tilen; /* length of the target info blob */ | |
227 | unsigned char *tiblob; /* target info blob in challenge response */ | |
228 | bool need_reconnect:1; /* connection reset, uid now invalid */ | |
229 | }; | |
230 | /* no more than one of the following three session flags may be set */ | |
231 | #define CIFS_SES_NT4 1 | |
232 | #define CIFS_SES_OS2 2 | |
233 | #define CIFS_SES_W9X 4 | |
234 | /* following flag is set for old servers such as OS2 (and Win95?) | |
235 | which do not negotiate NTLM or POSIX dialects, but instead | |
236 | negotiate one of the older LANMAN dialects */ | |
237 | #define CIFS_SES_LANMAN 8 | |
238 | /* | |
239 | * there is one of these for each connection to a resource on a particular | |
240 | * session | |
241 | */ | |
242 | struct cifsTconInfo { | |
243 | struct list_head tcon_list; | |
244 | int tc_count; | |
245 | struct list_head openFileList; | |
246 | struct cifsSesInfo *ses; /* pointer to session associated with */ | |
247 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ | |
248 | char *nativeFileSystem; | |
249 | char *password; /* for share-level security */ | |
250 | __u16 tid; /* The 2 byte tree id */ | |
251 | __u16 Flags; /* optional support bits */ | |
252 | enum statusEnum tidStatus; | |
253 | #ifdef CONFIG_CIFS_STATS | |
254 | atomic_t num_smbs_sent; | |
255 | atomic_t num_writes; | |
256 | atomic_t num_reads; | |
257 | atomic_t num_flushes; | |
258 | atomic_t num_oplock_brks; | |
259 | atomic_t num_opens; | |
260 | atomic_t num_closes; | |
261 | atomic_t num_deletes; | |
262 | atomic_t num_mkdirs; | |
263 | atomic_t num_posixopens; | |
264 | atomic_t num_posixmkdirs; | |
265 | atomic_t num_rmdirs; | |
266 | atomic_t num_renames; | |
267 | atomic_t num_t2renames; | |
268 | atomic_t num_ffirst; | |
269 | atomic_t num_fnext; | |
270 | atomic_t num_fclose; | |
271 | atomic_t num_hardlinks; | |
272 | atomic_t num_symlinks; | |
273 | atomic_t num_locks; | |
274 | atomic_t num_acl_get; | |
275 | atomic_t num_acl_set; | |
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 */ | |
290 | __u64 bytes_read; | |
291 | __u64 bytes_written; | |
292 | spinlock_t stat_lock; | |
293 | #endif /* CONFIG_CIFS_STATS */ | |
294 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; | |
295 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ | |
296 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; | |
297 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ | |
298 | bool retry:1; | |
299 | bool nocase:1; | |
300 | bool seal:1; /* transport encryption for this mounted share */ | |
301 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol | |
302 | for this mount even if server would support */ | |
303 | bool local_lease:1; /* check leases (only) on local system not remote */ | |
304 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ | |
305 | bool need_reconnect:1; /* connection reset, tid now invalid */ | |
306 | #ifdef CONFIG_CIFS_FSCACHE | |
307 | u64 resource_id; /* server resource id */ | |
308 | struct fscache_cookie *fscache; /* cookie for share */ | |
309 | #endif | |
310 | /* BB add field for back pointer to sb struct(s)? */ | |
311 | }; | |
312 | ||
313 | /* | |
314 | * This info hangs off the cifsFileInfo structure, pointed to by llist. | |
315 | * This is used to track byte stream locks on the file | |
316 | */ | |
317 | struct cifsLockInfo { | |
318 | struct list_head llist; /* pointer to next cifsLockInfo */ | |
319 | __u64 offset; | |
320 | __u64 length; | |
321 | __u8 type; | |
322 | }; | |
323 | ||
324 | /* | |
325 | * One of these for each open instance of a file | |
326 | */ | |
327 | struct cifs_search_info { | |
328 | loff_t index_of_last_entry; | |
329 | __u16 entries_in_buffer; | |
330 | __u16 info_level; | |
331 | __u32 resume_key; | |
332 | char *ntwrk_buf_start; | |
333 | char *srch_entries_start; | |
334 | char *last_entry; | |
335 | char *presume_name; | |
336 | unsigned int resume_name_len; | |
337 | bool endOfSearch:1; | |
338 | bool emptyDir:1; | |
339 | bool unicode:1; | |
340 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
341 | }; | |
342 | ||
343 | struct cifsFileInfo { | |
344 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
345 | struct list_head flist; /* next fid (file instance) for this inode */ | |
346 | unsigned int uid; /* allows finding which FileInfo structure */ | |
347 | __u32 pid; /* process id who opened file */ | |
348 | __u16 netfid; /* file id from remote */ | |
349 | /* BB add lock scope info here if needed */ ; | |
350 | /* lock scope id (0 if none) */ | |
351 | struct file *pfile; /* needed for writepage */ | |
352 | struct inode *pInode; /* needed for oplock break */ | |
353 | struct vfsmount *mnt; | |
354 | struct cifsTconInfo *tcon; | |
355 | struct mutex lock_mutex; | |
356 | struct list_head llist; /* list of byte range locks we have. */ | |
357 | bool closePend:1; /* file is marked to close */ | |
358 | bool invalidHandle:1; /* file closed via session abend */ | |
359 | bool oplock_break_cancelled:1; | |
360 | atomic_t count; /* reference count */ | |
361 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ | |
362 | struct cifs_search_info srch_inf; | |
363 | struct work_struct oplock_break; /* work for oplock breaks */ | |
364 | }; | |
365 | ||
366 | /* Take a reference on the file private data */ | |
367 | static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file) | |
368 | { | |
369 | atomic_inc(&cifs_file->count); | |
370 | } | |
371 | ||
372 | /* Release a reference on the file private data */ | |
373 | static inline void cifsFileInfo_put(struct cifsFileInfo *cifs_file) | |
374 | { | |
375 | if (atomic_dec_and_test(&cifs_file->count)) { | |
376 | iput(cifs_file->pInode); | |
377 | kfree(cifs_file); | |
378 | } | |
379 | } | |
380 | ||
381 | /* | |
382 | * One of these for each file inode | |
383 | */ | |
384 | ||
385 | struct cifsInodeInfo { | |
386 | struct list_head lockList; | |
387 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ | |
388 | struct list_head openFileList; | |
389 | int write_behind_rc; | |
390 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ | |
391 | unsigned long time; /* jiffies of last update/check of inode */ | |
392 | bool clientCanCacheRead:1; /* read oplock */ | |
393 | bool clientCanCacheAll:1; /* read and writebehind oplock */ | |
394 | bool delete_pending:1; /* DELETE_ON_CLOSE is set */ | |
395 | bool invalid_mapping:1; /* pagecache is invalid */ | |
396 | u64 server_eof; /* current file size on server */ | |
397 | u64 uniqueid; /* server inode number */ | |
398 | #ifdef CONFIG_CIFS_FSCACHE | |
399 | struct fscache_cookie *fscache; | |
400 | #endif | |
401 | struct inode vfs_inode; | |
402 | }; | |
403 | ||
404 | static inline struct cifsInodeInfo * | |
405 | CIFS_I(struct inode *inode) | |
406 | { | |
407 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
408 | } | |
409 | ||
410 | static inline struct cifs_sb_info * | |
411 | CIFS_SB(struct super_block *sb) | |
412 | { | |
413 | return sb->s_fs_info; | |
414 | } | |
415 | ||
416 | static inline struct cifsTconInfo * | |
417 | cifs_sb_tcon(struct cifs_sb_info *cifs_sb) | |
418 | { | |
419 | return cifs_sb->ptcon; | |
420 | } | |
421 | ||
422 | /* This function is always expected to succeed */ | |
423 | static inline struct cifsTconInfo * | |
424 | cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb) | |
425 | { | |
426 | return cifs_sb->ptcon; | |
427 | } | |
428 | ||
429 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) | |
430 | { | |
431 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
432 | return '/'; | |
433 | else | |
434 | return '\\'; | |
435 | } | |
436 | ||
437 | #ifdef CONFIG_CIFS_STATS | |
438 | #define cifs_stats_inc atomic_inc | |
439 | ||
440 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, | |
441 | unsigned int bytes) | |
442 | { | |
443 | if (bytes) { | |
444 | spin_lock(&tcon->stat_lock); | |
445 | tcon->bytes_written += bytes; | |
446 | spin_unlock(&tcon->stat_lock); | |
447 | } | |
448 | } | |
449 | ||
450 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, | |
451 | unsigned int bytes) | |
452 | { | |
453 | spin_lock(&tcon->stat_lock); | |
454 | tcon->bytes_read += bytes; | |
455 | spin_unlock(&tcon->stat_lock); | |
456 | } | |
457 | #else | |
458 | ||
459 | #define cifs_stats_inc(field) do {} while (0) | |
460 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
461 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
462 | ||
463 | #endif | |
464 | ||
465 | /* one of these for every pending CIFS request to the server */ | |
466 | struct mid_q_entry { | |
467 | struct list_head qhead; /* mids waiting on reply from this server */ | |
468 | __u16 mid; /* multiplex id */ | |
469 | __u16 pid; /* process id */ | |
470 | __u32 sequence_number; /* for CIFS signing */ | |
471 | unsigned long when_alloc; /* when mid was created */ | |
472 | #ifdef CONFIG_CIFS_STATS2 | |
473 | unsigned long when_sent; /* time when smb send finished */ | |
474 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
475 | #endif | |
476 | struct task_struct *tsk; /* task waiting for response */ | |
477 | struct smb_hdr *resp_buf; /* response buffer */ | |
478 | int midState; /* wish this were enum but can not pass to wait_event */ | |
479 | __u8 command; /* smb command code */ | |
480 | bool largeBuf:1; /* if valid response, is pointer to large buf */ | |
481 | bool multiRsp:1; /* multiple trans2 responses for one request */ | |
482 | bool multiEnd:1; /* both received */ | |
483 | }; | |
484 | ||
485 | struct oplock_q_entry { | |
486 | struct list_head qhead; | |
487 | struct inode *pinode; | |
488 | struct cifsTconInfo *tcon; | |
489 | __u16 netfid; | |
490 | }; | |
491 | ||
492 | /* for pending dnotify requests */ | |
493 | struct dir_notify_req { | |
494 | struct list_head lhead; | |
495 | __le16 Pid; | |
496 | __le16 PidHigh; | |
497 | __u16 Mid; | |
498 | __u16 Tid; | |
499 | __u16 Uid; | |
500 | __u16 netfid; | |
501 | __u32 filter; /* CompletionFilter (for multishot) */ | |
502 | int multishot; | |
503 | struct file *pfile; | |
504 | }; | |
505 | ||
506 | struct dfs_info3_param { | |
507 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
508 | int path_consumed; | |
509 | int server_type; | |
510 | int ref_flag; | |
511 | char *path_name; | |
512 | char *node_name; | |
513 | }; | |
514 | ||
515 | /* | |
516 | * common struct for holding inode info when searching for or updating an | |
517 | * inode with new info | |
518 | */ | |
519 | ||
520 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
521 | #define CIFS_FATTR_DELETE_PENDING 0x2 | |
522 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
523 | #define CIFS_FATTR_INO_COLLISION 0x8 | |
524 | ||
525 | struct cifs_fattr { | |
526 | u32 cf_flags; | |
527 | u32 cf_cifsattrs; | |
528 | u64 cf_uniqueid; | |
529 | u64 cf_eof; | |
530 | u64 cf_bytes; | |
531 | uid_t cf_uid; | |
532 | gid_t cf_gid; | |
533 | umode_t cf_mode; | |
534 | dev_t cf_rdev; | |
535 | unsigned int cf_nlink; | |
536 | unsigned int cf_dtype; | |
537 | struct timespec cf_atime; | |
538 | struct timespec cf_mtime; | |
539 | struct timespec cf_ctime; | |
540 | }; | |
541 | ||
542 | static inline void free_dfs_info_param(struct dfs_info3_param *param) | |
543 | { | |
544 | if (param) { | |
545 | kfree(param->path_name); | |
546 | kfree(param->node_name); | |
547 | kfree(param); | |
548 | } | |
549 | } | |
550 | ||
551 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
552 | int number_of_items) | |
553 | { | |
554 | int i; | |
555 | if ((number_of_items == 0) || (param == NULL)) | |
556 | return; | |
557 | for (i = 0; i < number_of_items; i++) { | |
558 | kfree(param[i].path_name); | |
559 | kfree(param[i].node_name); | |
560 | } | |
561 | kfree(param); | |
562 | } | |
563 | ||
564 | #define MID_FREE 0 | |
565 | #define MID_REQUEST_ALLOCATED 1 | |
566 | #define MID_REQUEST_SUBMITTED 2 | |
567 | #define MID_RESPONSE_RECEIVED 4 | |
568 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
569 | #define MID_NO_RESP_NEEDED 0x10 | |
570 | ||
571 | /* Types of response buffer returned from SendReceive2 */ | |
572 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
573 | #define CIFS_SMALL_BUFFER 1 | |
574 | #define CIFS_LARGE_BUFFER 2 | |
575 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
576 | ||
577 | /* Type of Request to SendReceive2 */ | |
578 | #define CIFS_STD_OP 0 /* normal request timeout */ | |
579 | #define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */ | |
580 | #define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */ | |
581 | #define CIFS_BLOCKING_OP 4 /* operation can block */ | |
582 | #define CIFS_ASYNC_OP 8 /* do not wait for response */ | |
583 | #define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */ | |
584 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ | |
585 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
586 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
587 | ||
588 | /* Security Flags: indicate type of session setup needed */ | |
589 | #define CIFSSEC_MAY_SIGN 0x00001 | |
590 | #define CIFSSEC_MAY_NTLM 0x00002 | |
591 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
592 | #define CIFSSEC_MAY_KRB5 0x00008 | |
593 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
594 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
595 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
596 | #else | |
597 | #define CIFSSEC_MAY_LANMAN 0 | |
598 | #define CIFSSEC_MAY_PLNTXT 0 | |
599 | #endif /* weak passwords */ | |
600 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
601 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ | |
602 | ||
603 | #define CIFSSEC_MUST_SIGN 0x01001 | |
604 | /* note that only one of the following can be set so the | |
605 | result of setting MUST flags more than once will be to | |
606 | require use of the stronger protocol */ | |
607 | #define CIFSSEC_MUST_NTLM 0x02002 | |
608 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
609 | #define CIFSSEC_MUST_KRB5 0x08008 | |
610 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
611 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
612 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
613 | #ifdef CONFIG_CIFS_UPCALL | |
614 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ | |
615 | #else | |
616 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ | |
617 | #endif /* UPCALL */ | |
618 | #else /* do not allow weak pw hash */ | |
619 | #ifdef CONFIG_CIFS_UPCALL | |
620 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ | |
621 | #else | |
622 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ | |
623 | #endif /* UPCALL */ | |
624 | #endif /* WEAK_PW_HASH */ | |
625 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
626 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ | |
627 | ||
628 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) | |
629 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
630 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) | |
631 | /* | |
632 | ***************************************************************** | |
633 | * All constants go here | |
634 | ***************************************************************** | |
635 | */ | |
636 | ||
637 | #define UID_HASH (16) | |
638 | ||
639 | /* | |
640 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
641 | * following to be declared. | |
642 | */ | |
643 | ||
644 | /**************************************************************************** | |
645 | * Locking notes. All updates to global variables and lists should be | |
646 | * protected by spinlocks or semaphores. | |
647 | * | |
648 | * Spinlocks | |
649 | * --------- | |
650 | * GlobalMid_Lock protects: | |
651 | * list operations on pending_mid_q and oplockQ | |
652 | * updates to XID counters, multiplex id and SMB sequence numbers | |
653 | * GlobalSMBSesLock protects: | |
654 | * list operations on tcp and SMB session lists and tCon lists | |
655 | * f_owner.lock protects certain per file struct operations | |
656 | * mapping->page_lock protects certain per page operations | |
657 | * | |
658 | * Semaphores | |
659 | * ---------- | |
660 | * sesSem operations on smb session | |
661 | * tconSem operations on tree connection | |
662 | * fh_sem file handle reconnection operations | |
663 | * | |
664 | ****************************************************************************/ | |
665 | ||
666 | #ifdef DECLARE_GLOBALS_HERE | |
667 | #define GLOBAL_EXTERN | |
668 | #else | |
669 | #define GLOBAL_EXTERN extern | |
670 | #endif | |
671 | ||
672 | /* | |
673 | * the list of TCP_Server_Info structures, ie each of the sockets | |
674 | * connecting our client to a distinct server (ip address), is | |
675 | * chained together by cifs_tcp_ses_list. The list of all our SMB | |
676 | * sessions (and from that the tree connections) can be found | |
677 | * by iterating over cifs_tcp_ses_list | |
678 | */ | |
679 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
680 | ||
681 | /* | |
682 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
683 | * tcp session, and the list of tcon's per smb session. It also protects | |
684 | * the reference counters for the server, smb session, and tcon. Finally, | |
685 | * changes to the tcon->tidStatus should be done while holding this lock. | |
686 | */ | |
687 | GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock; | |
688 | ||
689 | /* | |
690 | * This lock protects the cifs_file->llist and cifs_file->flist | |
691 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
692 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
693 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
694 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
695 | */ | |
696 | GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; | |
697 | ||
698 | /* Outstanding dir notify requests */ | |
699 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
700 | /* DirNotify response queue */ | |
701 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
702 | ||
703 | /* | |
704 | * Global transaction id (XID) information | |
705 | */ | |
706 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
707 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ | |
708 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ | |
709 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ | |
710 | /* on midQ entries */ | |
711 | GLOBAL_EXTERN char Local_System_Name[15]; | |
712 | ||
713 | /* | |
714 | * Global counters, updated atomically | |
715 | */ | |
716 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
717 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
718 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
719 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
720 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
721 | ||
722 | /* Various Debug counters */ | |
723 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ | |
724 | #ifdef CONFIG_CIFS_STATS2 | |
725 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
726 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
727 | #endif | |
728 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
729 | GLOBAL_EXTERN atomic_t midCount; | |
730 | ||
731 | /* Misc globals */ | |
732 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions | |
733 | to be established on existing mount if we | |
734 | have the uid/password or Kerberos credential | |
735 | or equivalent for current user */ | |
736 | GLOBAL_EXTERN unsigned int oplockEnabled; | |
737 | GLOBAL_EXTERN unsigned int experimEnabled; | |
738 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; | |
739 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent | |
740 | with more secure ntlmssp2 challenge/resp */ | |
741 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ | |
742 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
743 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
744 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
745 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
746 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
747 | ||
748 | void cifs_oplock_break(struct work_struct *work); | |
749 | void cifs_oplock_break_get(struct cifsFileInfo *cfile); | |
750 | void cifs_oplock_break_put(struct cifsFileInfo *cfile); | |
751 | ||
752 | extern const struct slow_work_ops cifs_oplock_break_ops; | |
753 | ||
754 | #endif /* _CIFS_GLOB_H */ |