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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 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 | ||
ef571cad | 30 | #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) |
1da177e4 | 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 | 49 | |
8ecaf67a JL |
50 | #define RFC1001_NAME_LEN 15 |
51 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
52 | ||
53 | /* currently length of NIP6_FMT */ | |
54 | #define SERVER_NAME_LENGTH 40 | |
1da177e4 LT |
55 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
56 | ||
57 | /* used to define string lengths for reversing unicode strings */ | |
58 | /* (256+1)*2 = 514 */ | |
59 | /* (max path length + 1 for null) * 2 for unicode */ | |
60 | #define MAX_NAME 514 | |
61 | ||
62 | #include "cifspdu.h" | |
63 | ||
1da177e4 LT |
64 | #ifndef XATTR_DOS_ATTRIB |
65 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
66 | #endif | |
67 | ||
1da177e4 LT |
68 | /* |
69 | * CIFS vfs client Status information (based on what we know.) | |
70 | */ | |
71 | ||
72 | /* associated with each tcp and smb session */ | |
73 | enum statusEnum { | |
74 | CifsNew = 0, | |
75 | CifsGood, | |
76 | CifsExiting, | |
77 | CifsNeedReconnect | |
78 | }; | |
79 | ||
80 | enum securityEnum { | |
a013689d SF |
81 | PLAINTXT = 0, /* Legacy with Plaintext passwords */ |
82 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 83 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 LT |
84 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
85 | RawNTLMSSP, /* NTLMSSP without SPNEGO */ | |
86 | NTLMSSP, /* NTLMSSP via SPNEGO */ | |
c16fefa5 SF |
87 | Kerberos, /* Kerberos via SPNEGO */ |
88 | MSKerberos, /* MS Kerberos via SPNEGO */ | |
1da177e4 LT |
89 | }; |
90 | ||
91 | enum protocolEnum { | |
3ec332ef | 92 | TCP = 0, |
1da177e4 LT |
93 | SCTP |
94 | /* Netbios frames protocol not supported at this time */ | |
95 | }; | |
96 | ||
b609f06a SF |
97 | struct mac_key { |
98 | unsigned int len; | |
99 | union { | |
100 | char ntlm[CIFS_SESS_KEY_SIZE + 16]; | |
2442421b | 101 | char krb5[CIFS_SESS_KEY_SIZE + 16]; /* BB: length correct? */ |
b609f06a SF |
102 | struct { |
103 | char key[16]; | |
104 | struct ntlmv2_resp resp; | |
105 | } ntlmv2; | |
106 | } data; | |
107 | }; | |
108 | ||
442aa310 SF |
109 | struct cifs_cred { |
110 | int uid; | |
111 | int gid; | |
112 | int mode; | |
113 | int cecount; | |
114 | struct cifs_sid osid; | |
115 | struct cifs_sid gsid; | |
116 | struct cifs_ntace *ntaces; | |
117 | struct cifs_ace *aces; | |
118 | }; | |
119 | ||
1da177e4 LT |
120 | /* |
121 | ***************************************************************** | |
122 | * Except the CIFS PDUs themselves all the | |
123 | * globally interesting structs should go here | |
124 | ***************************************************************** | |
125 | */ | |
126 | ||
127 | struct TCP_Server_Info { | |
3b795210 SF |
128 | struct list_head tcp_ses_list; |
129 | struct list_head smb_ses_list; | |
e7ddee90 | 130 | int srv_count; /* reference counter */ |
a10faeb2 | 131 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 132 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
c359cf3c | 133 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 LT |
134 | struct socket *ssocket; |
135 | union { | |
136 | struct sockaddr_in sockAddr; | |
137 | struct sockaddr_in6 sockAddr6; | |
138 | } addr; | |
d38d8c74 | 139 | wait_queue_head_t response_q; |
1da177e4 LT |
140 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
141 | struct list_head pending_mid_q; | |
142 | void *Server_NlsInfo; /* BB - placeholder for future NLS info */ | |
143 | unsigned short server_codepage; /* codepage for the server */ | |
131afd0b | 144 | unsigned long ip_address; /* IP addr for the server if known */ |
d38d8c74 | 145 | enum protocolEnum protocolType; |
1da177e4 LT |
146 | char versionMajor; |
147 | char versionMinor; | |
4b18f2a9 | 148 | bool svlocal:1; /* local server or remote */ |
edf1ae40 SF |
149 | bool noblocksnd; /* use blocking sendmsg */ |
150 | bool noautotune; /* do not autotune send buf sizes */ | |
1da177e4 | 151 | atomic_t inFlight; /* number of requests on the wire to server */ |
131afd0b SF |
152 | #ifdef CONFIG_CIFS_STATS2 |
153 | atomic_t inSend; /* requests trying to send */ | |
154 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
155 | #endif | |
1da177e4 | 156 | enum statusEnum tcpStatus; /* what we think the status is */ |
72ca545b | 157 | struct mutex srv_mutex; |
1da177e4 LT |
158 | struct task_struct *tsk; |
159 | char server_GUID[16]; | |
160 | char secMode; | |
161 | enum securityEnum secType; | |
162 | unsigned int maxReq; /* Clients should submit no more */ | |
163 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
164 | /* multiplexed reads or writes */ | |
165 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
166 | /* message size the server can send or receive for non-raw SMBs */ | |
167 | unsigned int maxRw; /* maxRw specifies the maximum */ | |
168 | /* message size the server can send or receive for */ | |
169 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
170 | char sessid[4]; /* unique token id for this session */ | |
171 | /* (returned on Negotiate */ | |
172 | int capabilities; /* allow selective disabling of caps by smb sess */ | |
de7ed55d | 173 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
1982c344 | 174 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
1da177e4 | 175 | char cryptKey[CIFS_CRYPTO_KEY_SIZE]; |
a10faeb2 | 176 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 177 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
ad009ac9 | 178 | __u32 sequence_number; /* needed for CIFS PDU signature */ |
b609f06a SF |
179 | struct mac_key mac_signing_key; |
180 | char ntlmv2_hash[16]; | |
3a5ff61c | 181 | unsigned long lstrp; /* when we got last response from this server */ |
1da177e4 LT |
182 | }; |
183 | ||
184 | /* | |
185 | * The following is our shortcut to user information. We surface the uid, | |
186 | * and name. We always get the password on the fly in case it | |
d38d8c74 | 187 | * has changed. We also hang a list of sessions owned by this user off here. |
1da177e4 LT |
188 | */ |
189 | struct cifsUidInfo { | |
190 | struct list_head userList; | |
191 | struct list_head sessionList; /* SMB sessions for this user */ | |
192 | uid_t linux_uid; | |
193 | char user[MAX_USERNAME_SIZE + 1]; /* ascii name of user */ | |
194 | /* BB may need ptr or callback for PAM or WinBind info */ | |
195 | }; | |
196 | ||
197 | /* | |
198 | * Session structure. One of these for each uid session with a particular host | |
199 | */ | |
200 | struct cifsSesInfo { | |
14fbf50d | 201 | struct list_head smb_ses_list; |
3b795210 | 202 | struct list_head tcon_list; |
1da177e4 | 203 | struct semaphore sesSem; |
3979877e | 204 | #if 0 |
1da177e4 | 205 | struct cifsUidInfo *uidInfo; /* pointer to user info */ |
3979877e | 206 | #endif |
1da177e4 | 207 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 208 | int ses_count; /* reference counter */ |
1da177e4 | 209 | enum statusEnum status; |
750d1151 | 210 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
211 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
212 | __u16 flags; | |
ad009ac9 SF |
213 | char *serverOS; /* name of operating system underlying server */ |
214 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
215 | char *serverDomain; /* security realm of server */ |
216 | int Suid; /* remote smb uid */ | |
217 | uid_t linux_uid; /* local Linux uid */ | |
218 | int capabilities; | |
d38d8c74 | 219 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 220 | TCP names - will ipv6 and sctp addresses fit? */ |
1da177e4 | 221 | char userName[MAX_USERNAME_SIZE + 1]; |
d38d8c74 SF |
222 | char *domainName; |
223 | char *password; | |
3b795210 | 224 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
1da177e4 | 225 | }; |
9ac00b7d | 226 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 227 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
228 | #define CIFS_SES_OS2 2 |
229 | #define CIFS_SES_W9X 4 | |
230 | /* following flag is set for old servers such as OS2 (and Win95?) | |
231 | which do not negotiate NTLM or POSIX dialects, but instead | |
232 | negotiate one of the older LANMAN dialects */ | |
233 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
234 | /* |
235 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 236 | * session |
1da177e4 LT |
237 | */ |
238 | struct cifsTconInfo { | |
f1987b44 JL |
239 | struct list_head tcon_list; |
240 | int tc_count; | |
1da177e4 | 241 | struct list_head openFileList; |
1da177e4 | 242 | struct cifsSesInfo *ses; /* pointer to session associated with */ |
254e55ed | 243 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 LT |
244 | char *nativeFileSystem; |
245 | __u16 tid; /* The 2 byte tree id */ | |
246 | __u16 Flags; /* optional support bits */ | |
247 | enum statusEnum tidStatus; | |
1da177e4 LT |
248 | #ifdef CONFIG_CIFS_STATS |
249 | atomic_t num_smbs_sent; | |
250 | atomic_t num_writes; | |
251 | atomic_t num_reads; | |
252 | atomic_t num_oplock_brks; | |
253 | atomic_t num_opens; | |
a5a2b489 | 254 | atomic_t num_closes; |
1da177e4 LT |
255 | atomic_t num_deletes; |
256 | atomic_t num_mkdirs; | |
257 | atomic_t num_rmdirs; | |
258 | atomic_t num_renames; | |
259 | atomic_t num_t2renames; | |
dfb7533b SF |
260 | atomic_t num_ffirst; |
261 | atomic_t num_fnext; | |
262 | atomic_t num_fclose; | |
a5a2b489 SF |
263 | atomic_t num_hardlinks; |
264 | atomic_t num_symlinks; | |
265 | atomic_t num_locks; | |
0a4b92c0 SF |
266 | atomic_t num_acl_get; |
267 | atomic_t num_acl_set; | |
a5a2b489 SF |
268 | #ifdef CONFIG_CIFS_STATS2 |
269 | unsigned long long time_writes; | |
270 | unsigned long long time_reads; | |
271 | unsigned long long time_opens; | |
272 | unsigned long long time_deletes; | |
273 | unsigned long long time_closes; | |
274 | unsigned long long time_mkdirs; | |
275 | unsigned long long time_rmdirs; | |
276 | unsigned long long time_renames; | |
277 | unsigned long long time_t2renames; | |
278 | unsigned long long time_ffirst; | |
279 | unsigned long long time_fnext; | |
280 | unsigned long long time_fclose; | |
281 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
282 | __u64 bytes_read; |
283 | __u64 bytes_written; | |
284 | spinlock_t stat_lock; | |
a5a2b489 | 285 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 286 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 287 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 288 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
289 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
290 | bool retry:1; | |
291 | bool nocase:1; | |
95b1cb90 | 292 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 293 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 294 | for this mount even if server would support */ |
84210e91 | 295 | bool local_lease:1; /* check leases (only) on local system not remote */ |
3b795210 | 296 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
c18c842b | 297 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
298 | }; |
299 | ||
300 | /* | |
7ee1af76 JA |
301 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
302 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
303 | */ |
304 | struct cifsLockInfo { | |
7ee1af76 JA |
305 | struct list_head llist; /* pointer to next cifsLockInfo */ |
306 | __u64 offset; | |
307 | __u64 length; | |
308 | __u8 type; | |
1da177e4 LT |
309 | }; |
310 | ||
311 | /* | |
312 | * One of these for each open instance of a file | |
313 | */ | |
314 | struct cifs_search_info { | |
315 | loff_t index_of_last_entry; | |
316 | __u16 entries_in_buffer; | |
317 | __u16 info_level; | |
318 | __u32 resume_key; | |
d38d8c74 SF |
319 | char *ntwrk_buf_start; |
320 | char *srch_entries_start; | |
0752f152 | 321 | char *last_entry; |
d38d8c74 | 322 | char *presume_name; |
1da177e4 | 323 | unsigned int resume_name_len; |
4b18f2a9 SF |
324 | bool endOfSearch:1; |
325 | bool emptyDir:1; | |
326 | bool unicode:1; | |
327 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
328 | }; |
329 | ||
330 | struct cifsFileInfo { | |
331 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
332 | struct list_head flist; /* next fid (file instance) for this inode */ | |
333 | unsigned int uid; /* allows finding which FileInfo structure */ | |
334 | __u32 pid; /* process id who opened file */ | |
335 | __u16 netfid; /* file id from remote */ | |
336 | /* BB add lock scope info here if needed */ ; | |
337 | /* lock scope id (0 if none) */ | |
d38d8c74 SF |
338 | struct file *pfile; /* needed for writepage */ |
339 | struct inode *pInode; /* needed for oplock break */ | |
796e5661 | 340 | struct mutex lock_mutex; |
7ee1af76 | 341 | struct list_head llist; /* list of byte range locks we have. */ |
4b18f2a9 SF |
342 | bool closePend:1; /* file is marked to close */ |
343 | bool invalidHandle:1; /* file closed via session abend */ | |
344 | bool messageMode:1; /* for pipes: message vs byte mode */ | |
23e7dd7d | 345 | atomic_t wrtPending; /* handle in use - defer close */ |
1da177e4 | 346 | struct semaphore fh_sem; /* prevents reopen race after dead ses*/ |
1da177e4 LT |
347 | struct cifs_search_info srch_inf; |
348 | }; | |
349 | ||
350 | /* | |
351 | * One of these for each file inode | |
352 | */ | |
353 | ||
354 | struct cifsInodeInfo { | |
355 | struct list_head lockList; | |
d38d8c74 | 356 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 LT |
357 | struct list_head openFileList; |
358 | int write_behind_rc; | |
359 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ | |
360 | atomic_t inUse; /* num concurrent users (local openers cifs) of file*/ | |
361 | unsigned long time; /* jiffies of last update/check of inode */ | |
4b18f2a9 SF |
362 | bool clientCanCacheRead:1; /* read oplock */ |
363 | bool clientCanCacheAll:1; /* read and writebehind oplock */ | |
364 | bool oplockPending:1; | |
9a8165fc | 365 | bool delete_pending:1; /* DELETE_ON_CLOSE is set */ |
1da177e4 LT |
366 | struct inode vfs_inode; |
367 | }; | |
368 | ||
369 | static inline struct cifsInodeInfo * | |
370 | CIFS_I(struct inode *inode) | |
371 | { | |
372 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
373 | } | |
374 | ||
375 | static inline struct cifs_sb_info * | |
376 | CIFS_SB(struct super_block *sb) | |
377 | { | |
378 | return sb->s_fs_info; | |
379 | } | |
380 | ||
ab2f218f | 381 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
382 | { |
383 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
384 | return '/'; | |
385 | else | |
386 | return '\\'; | |
387 | } | |
1da177e4 | 388 | |
a4544347 SF |
389 | #ifdef CONFIG_CIFS_STATS |
390 | #define cifs_stats_inc atomic_inc | |
391 | ||
392 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, | |
393 | unsigned int bytes) | |
394 | { | |
395 | if (bytes) { | |
396 | spin_lock(&tcon->stat_lock); | |
397 | tcon->bytes_written += bytes; | |
398 | spin_unlock(&tcon->stat_lock); | |
399 | } | |
400 | } | |
401 | ||
402 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, | |
403 | unsigned int bytes) | |
404 | { | |
405 | spin_lock(&tcon->stat_lock); | |
406 | tcon->bytes_read += bytes; | |
407 | spin_unlock(&tcon->stat_lock); | |
408 | } | |
409 | #else | |
410 | ||
d38d8c74 SF |
411 | #define cifs_stats_inc(field) do {} while (0) |
412 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
413 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
414 | |
415 | #endif | |
416 | ||
1da177e4 LT |
417 | /* one of these for every pending CIFS request to the server */ |
418 | struct mid_q_entry { | |
419 | struct list_head qhead; /* mids waiting on reply from this server */ | |
420 | __u16 mid; /* multiplex id */ | |
421 | __u16 pid; /* process id */ | |
422 | __u32 sequence_number; /* for CIFS signing */ | |
1047abc1 SF |
423 | unsigned long when_alloc; /* when mid was created */ |
424 | #ifdef CONFIG_CIFS_STATS2 | |
425 | unsigned long when_sent; /* time when smb send finished */ | |
426 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
427 | #endif | |
1da177e4 LT |
428 | struct task_struct *tsk; /* task waiting for response */ |
429 | struct smb_hdr *resp_buf; /* response buffer */ | |
430 | int midState; /* wish this were enum but can not pass to wait_event */ | |
c81156dd | 431 | __u8 command; /* smb command code */ |
4b18f2a9 SF |
432 | bool largeBuf:1; /* if valid response, is pointer to large buf */ |
433 | bool multiRsp:1; /* multiple trans2 responses for one request */ | |
434 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
435 | }; |
436 | ||
437 | struct oplock_q_entry { | |
438 | struct list_head qhead; | |
d38d8c74 SF |
439 | struct inode *pinode; |
440 | struct cifsTconInfo *tcon; | |
1da177e4 LT |
441 | __u16 netfid; |
442 | }; | |
443 | ||
ff5dbd9e SF |
444 | /* for pending dnotify requests */ |
445 | struct dir_notify_req { | |
446 | struct list_head lhead; | |
447 | __le16 Pid; | |
448 | __le16 PidHigh; | |
449 | __u16 Mid; | |
450 | __u16 Tid; | |
451 | __u16 Uid; | |
452 | __u16 netfid; | |
453 | __u32 filter; /* CompletionFilter (for multishot) */ | |
454 | int multishot; | |
d38d8c74 | 455 | struct file *pfile; |
ff5dbd9e SF |
456 | }; |
457 | ||
366781c1 SF |
458 | struct dfs_info3_param { |
459 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 460 | int path_consumed; |
366781c1 SF |
461 | int server_type; |
462 | int ref_flag; | |
463 | char *path_name; | |
464 | char *node_name; | |
465 | }; | |
466 | ||
467 | static inline void free_dfs_info_param(struct dfs_info3_param *param) | |
468 | { | |
469 | if (param) { | |
470 | kfree(param->path_name); | |
471 | kfree(param->node_name); | |
472 | kfree(param); | |
473 | } | |
474 | } | |
475 | ||
476 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
477 | int number_of_items) | |
478 | { | |
479 | int i; | |
480 | if ((number_of_items == 0) || (param == NULL)) | |
481 | return; | |
482 | for (i = 0; i < number_of_items; i++) { | |
483 | kfree(param[i].path_name); | |
484 | kfree(param[i].node_name); | |
485 | } | |
486 | kfree(param); | |
487 | } | |
488 | ||
1da177e4 LT |
489 | #define MID_FREE 0 |
490 | #define MID_REQUEST_ALLOCATED 1 | |
491 | #define MID_REQUEST_SUBMITTED 2 | |
492 | #define MID_RESPONSE_RECEIVED 4 | |
493 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
494 | #define MID_NO_RESP_NEEDED 0x10 | |
ec637e3f SF |
495 | |
496 | /* Types of response buffer returned from SendReceive2 */ | |
497 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
498 | #define CIFS_SMALL_BUFFER 1 | |
499 | #define CIFS_LARGE_BUFFER 2 | |
500 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 501 | |
133672ef SF |
502 | /* Type of Request to SendReceive2 */ |
503 | #define CIFS_STD_OP 0 /* normal request timeout */ | |
504 | #define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */ | |
505 | #define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */ | |
506 | #define CIFS_BLOCKING_OP 4 /* operation can block */ | |
507 | #define CIFS_ASYNC_OP 8 /* do not wait for response */ | |
508 | #define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */ | |
509 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ | |
510 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
511 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
512 | ||
3979877e SF |
513 | /* Security Flags: indicate type of session setup needed */ |
514 | #define CIFSSEC_MAY_SIGN 0x00001 | |
515 | #define CIFSSEC_MAY_NTLM 0x00002 | |
516 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
517 | #define CIFSSEC_MAY_KRB5 0x00008 | |
518 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
519 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
520 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
521 | #else |
522 | #define CIFSSEC_MAY_LANMAN 0 | |
523 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
524 | #endif /* weak passwords */ |
525 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
526 | ||
527 | #define CIFSSEC_MUST_SIGN 0x01001 | |
528 | /* note that only one of the following can be set so the | |
529 | result of setting MUST flags more than once will be to | |
530 | require use of the stronger protocol */ | |
531 | #define CIFSSEC_MUST_NTLM 0x02002 | |
532 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
533 | #define CIFSSEC_MUST_KRB5 0x08008 | |
534 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
535 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
536 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa JL |
537 | #ifdef CONFIG_CIFS_UPCALL |
538 | #define CIFSSEC_MASK 0x3F03F /* allows weak security but also krb5 */ | |
539 | #else | |
3979877e | 540 | #define CIFSSEC_MASK 0x37037 /* current flags supported if weak */ |
016ec75f | 541 | #endif /* UPCALL */ |
0d3a01fa JL |
542 | #else /* do not allow weak pw hash */ |
543 | #ifdef CONFIG_CIFS_UPCALL | |
544 | #define CIFSSEC_MASK 0x0F00F /* flags supported if no weak allowed */ | |
d38d8c74 | 545 | #else |
0d3a01fa | 546 | #define CIFSSEC_MASK 0x07007 /* flags supported if no weak allowed */ |
016ec75f | 547 | #endif /* UPCALL */ |
3979877e SF |
548 | #endif /* WEAK_PW_HASH */ |
549 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
550 | ||
ef571cad SP |
551 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
552 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
a013689d | 553 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5) |
1da177e4 LT |
554 | /* |
555 | ***************************************************************** | |
556 | * All constants go here | |
557 | ***************************************************************** | |
558 | */ | |
559 | ||
560 | #define UID_HASH (16) | |
561 | ||
562 | /* | |
563 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
564 | * following to be declared. | |
565 | */ | |
566 | ||
567 | /**************************************************************************** | |
568 | * Locking notes. All updates to global variables and lists should be | |
569 | * protected by spinlocks or semaphores. | |
570 | * | |
571 | * Spinlocks | |
572 | * --------- | |
573 | * GlobalMid_Lock protects: | |
574 | * list operations on pending_mid_q and oplockQ | |
575 | * updates to XID counters, multiplex id and SMB sequence numbers | |
576 | * GlobalSMBSesLock protects: | |
577 | * list operations on tcp and SMB session lists and tCon lists | |
578 | * f_owner.lock protects certain per file struct operations | |
579 | * mapping->page_lock protects certain per page operations | |
580 | * | |
581 | * Semaphores | |
582 | * ---------- | |
583 | * sesSem operations on smb session | |
584 | * tconSem operations on tree connection | |
d38d8c74 | 585 | * fh_sem file handle reconnection operations |
1da177e4 LT |
586 | * |
587 | ****************************************************************************/ | |
588 | ||
589 | #ifdef DECLARE_GLOBALS_HERE | |
590 | #define GLOBAL_EXTERN | |
591 | #else | |
592 | #define GLOBAL_EXTERN extern | |
593 | #endif | |
594 | ||
e7ddee90 JL |
595 | /* |
596 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 597 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 598 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 599 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
600 | * by iterating over cifs_tcp_ses_list |
601 | */ | |
602 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
603 | ||
f1987b44 JL |
604 | /* |
605 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
606 | * tcp session, and the list of tcon's per smb session. It also protects | |
607 | * the reference counters for the server, smb session, and tcon. Finally, | |
608 | * changes to the tcon->tidStatus should be done while holding this lock. | |
609 | */ | |
e7ddee90 | 610 | GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
611 | |
612 | /* | |
613 | * This lock protects the cifs_file->llist and cifs_file->flist | |
614 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
615 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
616 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
617 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
618 | */ | |
619 | GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; | |
1da177e4 LT |
620 | |
621 | GLOBAL_EXTERN struct list_head GlobalOplock_Q; | |
622 | ||
99ee4dbd SF |
623 | /* Outstanding dir notify requests */ |
624 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
625 | /* DirNotify response queue */ | |
626 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
ff5dbd9e | 627 | |
1da177e4 LT |
628 | /* |
629 | * Global transaction id (XID) information | |
630 | */ | |
631 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 632 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 633 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
634 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
635 | /* on midQ entries */ | |
1da177e4 LT |
636 | GLOBAL_EXTERN char Local_System_Name[15]; |
637 | ||
638 | /* | |
639 | * Global counters, updated atomically | |
640 | */ | |
641 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
642 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
643 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
644 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
645 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
646 | ||
aaa9bbe0 | 647 | /* Various Debug counters */ |
4498eed5 SF |
648 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
649 | #ifdef CONFIG_CIFS_STATS2 | |
650 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
651 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
652 | #endif | |
653 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
654 | GLOBAL_EXTERN atomic_t midCount; |
655 | ||
656 | /* Misc globals */ | |
254e55ed | 657 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions |
1da177e4 | 658 | to be established on existing mount if we |
d38d8c74 | 659 | have the uid/password or Kerberos credential |
1da177e4 LT |
660 | or equivalent for current user */ |
661 | GLOBAL_EXTERN unsigned int oplockEnabled; | |
662 | GLOBAL_EXTERN unsigned int experimEnabled; | |
663 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; | |
d38d8c74 | 664 | GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent |
1da177e4 | 665 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
666 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
667 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
668 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
669 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
670 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
671 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
672 |