Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsglob.h | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
7ee1af76 | 6 | * Jeremy Allison (jra@samba.org) |
1da177e4 LT |
7 | * |
8 | * This library is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as published | |
10 | * by the Free Software Foundation; either version 2.1 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | * the GNU Lesser General Public License for more details. | |
d38d8c74 | 17 | * |
1da177e4 LT |
18 | */ |
19 | #include <linux/in.h> | |
20 | #include <linux/in6.h> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
3bc303c2 | 22 | #include <linux/slow-work.h> |
1da177e4 | 23 | #include "cifs_fs_sb.h" |
442aa310 | 24 | #include "cifsacl.h" |
1da177e4 LT |
25 | /* |
26 | * The sizes of various internal tables and strings | |
27 | */ | |
28 | #define MAX_UID_INFO 16 | |
29 | #define MAX_SES_INFO 2 | |
30 | #define MAX_TCON_INFO 4 | |
31 | ||
ef571cad | 32 | #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) |
1da177e4 | 33 | #define MAX_SERVER_SIZE 15 |
d38d8c74 | 34 | #define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */ |
1da177e4 LT |
35 | #define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null |
36 | termination then *2 for unicode versions */ | |
37 | #define MAX_PASSWORD_SIZE 16 | |
38 | ||
39 | #define CIFS_MIN_RCV_POOL 4 | |
40 | ||
41 | /* | |
42 | * MAX_REQ is the maximum number of requests that WE will send | |
af901ca1 | 43 | * on one socket concurrently. It also matches the most common |
d38d8c74 | 44 | * value of max multiplex returned by servers. We may |
1da177e4 LT |
45 | * eventually want to use the negotiated value (in case |
46 | * future servers can handle more) when we are more confident that | |
47 | * we will not have problems oveloading the socket with pending | |
48 | * write data. | |
49 | */ | |
d38d8c74 | 50 | #define CIFS_MAX_REQ 50 |
1da177e4 | 51 | |
8ecaf67a JL |
52 | #define RFC1001_NAME_LEN 15 |
53 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
54 | ||
55 | /* currently length of NIP6_FMT */ | |
56 | #define SERVER_NAME_LENGTH 40 | |
1da177e4 LT |
57 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
58 | ||
59 | /* used to define string lengths for reversing unicode strings */ | |
60 | /* (256+1)*2 = 514 */ | |
61 | /* (max path length + 1 for null) * 2 for unicode */ | |
62 | #define MAX_NAME 514 | |
63 | ||
64 | #include "cifspdu.h" | |
65 | ||
1da177e4 LT |
66 | #ifndef XATTR_DOS_ATTRIB |
67 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
68 | #endif | |
69 | ||
1da177e4 LT |
70 | /* |
71 | * CIFS vfs client Status information (based on what we know.) | |
72 | */ | |
73 | ||
74 | /* associated with each tcp and smb session */ | |
75 | enum statusEnum { | |
76 | CifsNew = 0, | |
77 | CifsGood, | |
78 | CifsExiting, | |
79 | CifsNeedReconnect | |
80 | }; | |
81 | ||
82 | enum securityEnum { | |
a013689d SF |
83 | PLAINTXT = 0, /* Legacy with Plaintext passwords */ |
84 | LANMAN, /* Legacy LANMAN auth */ | |
3979877e | 85 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 86 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 87 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
f46c7234 | 88 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ |
c16fefa5 | 89 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
90 | }; |
91 | ||
92 | enum protocolEnum { | |
3ec332ef | 93 | TCP = 0, |
1da177e4 LT |
94 | SCTP |
95 | /* Netbios frames protocol not supported at this time */ | |
96 | }; | |
97 | ||
b609f06a SF |
98 | struct mac_key { |
99 | unsigned int len; | |
100 | union { | |
101 | char ntlm[CIFS_SESS_KEY_SIZE + 16]; | |
2442421b | 102 | char krb5[CIFS_SESS_KEY_SIZE + 16]; /* BB: length correct? */ |
b609f06a SF |
103 | struct { |
104 | char key[16]; | |
105 | struct ntlmv2_resp resp; | |
106 | } ntlmv2; | |
107 | } data; | |
108 | }; | |
109 | ||
442aa310 SF |
110 | struct cifs_cred { |
111 | int uid; | |
112 | int gid; | |
113 | int mode; | |
114 | int cecount; | |
115 | struct cifs_sid osid; | |
116 | struct cifs_sid gsid; | |
117 | struct cifs_ntace *ntaces; | |
118 | struct cifs_ace *aces; | |
119 | }; | |
120 | ||
1da177e4 LT |
121 | /* |
122 | ***************************************************************** | |
123 | * Except the CIFS PDUs themselves all the | |
124 | * globally interesting structs should go here | |
125 | ***************************************************************** | |
126 | */ | |
127 | ||
128 | struct TCP_Server_Info { | |
3b795210 SF |
129 | struct list_head tcp_ses_list; |
130 | struct list_head smb_ses_list; | |
e7ddee90 | 131 | int srv_count; /* reference counter */ |
a10faeb2 | 132 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 133 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
c359cf3c | 134 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 LT |
135 | struct socket *ssocket; |
136 | union { | |
137 | struct sockaddr_in sockAddr; | |
138 | struct sockaddr_in6 sockAddr6; | |
139 | } addr; | |
d38d8c74 | 140 | wait_queue_head_t response_q; |
1da177e4 LT |
141 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
142 | struct list_head pending_mid_q; | |
143 | void *Server_NlsInfo; /* BB - placeholder for future NLS info */ | |
144 | unsigned short server_codepage; /* codepage for the server */ | |
131afd0b | 145 | unsigned long ip_address; /* IP addr for the server if known */ |
d38d8c74 | 146 | enum protocolEnum protocolType; |
1da177e4 LT |
147 | char versionMajor; |
148 | char versionMinor; | |
4b18f2a9 | 149 | bool svlocal:1; /* local server or remote */ |
edf1ae40 SF |
150 | bool noblocksnd; /* use blocking sendmsg */ |
151 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 152 | bool tcp_nodelay; |
1da177e4 | 153 | atomic_t inFlight; /* number of requests on the wire to server */ |
131afd0b SF |
154 | #ifdef CONFIG_CIFS_STATS2 |
155 | atomic_t inSend; /* requests trying to send */ | |
156 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
157 | #endif | |
1da177e4 | 158 | enum statusEnum tcpStatus; /* what we think the status is */ |
72ca545b | 159 | struct mutex srv_mutex; |
1da177e4 LT |
160 | struct task_struct *tsk; |
161 | char server_GUID[16]; | |
162 | char secMode; | |
163 | enum securityEnum secType; | |
164 | unsigned int maxReq; /* Clients should submit no more */ | |
165 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
166 | /* multiplexed reads or writes */ | |
167 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
168 | /* message size the server can send or receive for non-raw SMBs */ | |
eca6acf9 | 169 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
170 | /* message size the server can send or receive for */ |
171 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
172 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
173 | those that can be specified uniquely with | |
174 | vcnumbers */ | |
1da177e4 LT |
175 | char sessid[4]; /* unique token id for this session */ |
176 | /* (returned on Negotiate */ | |
177 | int capabilities; /* allow selective disabling of caps by smb sess */ | |
de7ed55d | 178 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
1982c344 | 179 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
1da177e4 | 180 | char cryptKey[CIFS_CRYPTO_KEY_SIZE]; |
a10faeb2 | 181 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 182 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
ad009ac9 | 183 | __u32 sequence_number; /* needed for CIFS PDU signature */ |
b609f06a SF |
184 | struct mac_key mac_signing_key; |
185 | char ntlmv2_hash[16]; | |
3a5ff61c | 186 | unsigned long lstrp; /* when we got last response from this server */ |
9bf67e51 | 187 | u16 dialect; /* dialect index that server chose */ |
26efa0ba JL |
188 | /* extended security flavors that server supports */ |
189 | bool sec_kerberos; /* supports plain Kerberos */ | |
190 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
191 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
192 | bool sec_ntlmssp; /* supports NTLMSSP */ | |
1da177e4 LT |
193 | }; |
194 | ||
195 | /* | |
196 | * The following is our shortcut to user information. We surface the uid, | |
197 | * and name. We always get the password on the fly in case it | |
d38d8c74 | 198 | * has changed. We also hang a list of sessions owned by this user off here. |
1da177e4 LT |
199 | */ |
200 | struct cifsUidInfo { | |
201 | struct list_head userList; | |
202 | struct list_head sessionList; /* SMB sessions for this user */ | |
203 | uid_t linux_uid; | |
204 | char user[MAX_USERNAME_SIZE + 1]; /* ascii name of user */ | |
205 | /* BB may need ptr or callback for PAM or WinBind info */ | |
206 | }; | |
207 | ||
208 | /* | |
209 | * Session structure. One of these for each uid session with a particular host | |
210 | */ | |
211 | struct cifsSesInfo { | |
14fbf50d | 212 | struct list_head smb_ses_list; |
3b795210 | 213 | struct list_head tcon_list; |
d7b619cf | 214 | struct mutex session_mutex; |
3979877e | 215 | #if 0 |
1da177e4 | 216 | struct cifsUidInfo *uidInfo; /* pointer to user info */ |
3979877e | 217 | #endif |
1da177e4 | 218 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 219 | int ses_count; /* reference counter */ |
1da177e4 | 220 | enum statusEnum status; |
750d1151 | 221 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
222 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
223 | __u16 flags; | |
eca6acf9 | 224 | __u16 vcnum; |
ad009ac9 SF |
225 | char *serverOS; /* name of operating system underlying server */ |
226 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
227 | char *serverDomain; /* security realm of server */ |
228 | int Suid; /* remote smb uid */ | |
229 | uid_t linux_uid; /* local Linux uid */ | |
230 | int capabilities; | |
d38d8c74 | 231 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 232 | TCP names - will ipv6 and sctp addresses fit? */ |
1da177e4 | 233 | char userName[MAX_USERNAME_SIZE + 1]; |
d38d8c74 SF |
234 | char *domainName; |
235 | char *password; | |
3b795210 | 236 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
1da177e4 | 237 | }; |
9ac00b7d | 238 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 239 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
240 | #define CIFS_SES_OS2 2 |
241 | #define CIFS_SES_W9X 4 | |
242 | /* following flag is set for old servers such as OS2 (and Win95?) | |
243 | which do not negotiate NTLM or POSIX dialects, but instead | |
244 | negotiate one of the older LANMAN dialects */ | |
245 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
246 | /* |
247 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 248 | * session |
1da177e4 LT |
249 | */ |
250 | struct cifsTconInfo { | |
f1987b44 JL |
251 | struct list_head tcon_list; |
252 | int tc_count; | |
1da177e4 | 253 | struct list_head openFileList; |
1da177e4 | 254 | struct cifsSesInfo *ses; /* pointer to session associated with */ |
254e55ed | 255 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 256 | char *nativeFileSystem; |
00e485b0 | 257 | char *password; /* for share-level security */ |
1da177e4 LT |
258 | __u16 tid; /* The 2 byte tree id */ |
259 | __u16 Flags; /* optional support bits */ | |
260 | enum statusEnum tidStatus; | |
1da177e4 LT |
261 | #ifdef CONFIG_CIFS_STATS |
262 | atomic_t num_smbs_sent; | |
263 | atomic_t num_writes; | |
264 | atomic_t num_reads; | |
b298f223 | 265 | atomic_t num_flushes; |
1da177e4 LT |
266 | atomic_t num_oplock_brks; |
267 | atomic_t num_opens; | |
a5a2b489 | 268 | atomic_t num_closes; |
1da177e4 LT |
269 | atomic_t num_deletes; |
270 | atomic_t num_mkdirs; | |
65bc98b0 SF |
271 | atomic_t num_posixopens; |
272 | atomic_t num_posixmkdirs; | |
1da177e4 LT |
273 | atomic_t num_rmdirs; |
274 | atomic_t num_renames; | |
275 | atomic_t num_t2renames; | |
dfb7533b SF |
276 | atomic_t num_ffirst; |
277 | atomic_t num_fnext; | |
278 | atomic_t num_fclose; | |
a5a2b489 SF |
279 | atomic_t num_hardlinks; |
280 | atomic_t num_symlinks; | |
281 | atomic_t num_locks; | |
0a4b92c0 SF |
282 | atomic_t num_acl_get; |
283 | atomic_t num_acl_set; | |
a5a2b489 SF |
284 | #ifdef CONFIG_CIFS_STATS2 |
285 | unsigned long long time_writes; | |
286 | unsigned long long time_reads; | |
287 | unsigned long long time_opens; | |
288 | unsigned long long time_deletes; | |
289 | unsigned long long time_closes; | |
290 | unsigned long long time_mkdirs; | |
291 | unsigned long long time_rmdirs; | |
292 | unsigned long long time_renames; | |
293 | unsigned long long time_t2renames; | |
294 | unsigned long long time_ffirst; | |
295 | unsigned long long time_fnext; | |
296 | unsigned long long time_fclose; | |
297 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
298 | __u64 bytes_read; |
299 | __u64 bytes_written; | |
300 | spinlock_t stat_lock; | |
a5a2b489 | 301 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 302 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 303 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 304 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
305 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
306 | bool retry:1; | |
307 | bool nocase:1; | |
95b1cb90 | 308 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 309 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 310 | for this mount even if server would support */ |
84210e91 | 311 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 312 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 313 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
c18c842b | 314 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
315 | }; |
316 | ||
317 | /* | |
7ee1af76 JA |
318 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
319 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
320 | */ |
321 | struct cifsLockInfo { | |
7ee1af76 JA |
322 | struct list_head llist; /* pointer to next cifsLockInfo */ |
323 | __u64 offset; | |
324 | __u64 length; | |
325 | __u8 type; | |
1da177e4 LT |
326 | }; |
327 | ||
328 | /* | |
329 | * One of these for each open instance of a file | |
330 | */ | |
331 | struct cifs_search_info { | |
332 | loff_t index_of_last_entry; | |
333 | __u16 entries_in_buffer; | |
334 | __u16 info_level; | |
335 | __u32 resume_key; | |
d38d8c74 SF |
336 | char *ntwrk_buf_start; |
337 | char *srch_entries_start; | |
0752f152 | 338 | char *last_entry; |
d38d8c74 | 339 | char *presume_name; |
1da177e4 | 340 | unsigned int resume_name_len; |
4b18f2a9 SF |
341 | bool endOfSearch:1; |
342 | bool emptyDir:1; | |
343 | bool unicode:1; | |
344 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
345 | }; |
346 | ||
347 | struct cifsFileInfo { | |
348 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
349 | struct list_head flist; /* next fid (file instance) for this inode */ | |
350 | unsigned int uid; /* allows finding which FileInfo structure */ | |
351 | __u32 pid; /* process id who opened file */ | |
352 | __u16 netfid; /* file id from remote */ | |
353 | /* BB add lock scope info here if needed */ ; | |
354 | /* lock scope id (0 if none) */ | |
d38d8c74 SF |
355 | struct file *pfile; /* needed for writepage */ |
356 | struct inode *pInode; /* needed for oplock break */ | |
3bc303c2 | 357 | struct vfsmount *mnt; |
796e5661 | 358 | struct mutex lock_mutex; |
7ee1af76 | 359 | struct list_head llist; /* list of byte range locks we have. */ |
4b18f2a9 SF |
360 | bool closePend:1; /* file is marked to close */ |
361 | bool invalidHandle:1; /* file closed via session abend */ | |
3bc303c2 | 362 | bool oplock_break_cancelled:1; |
6ab409b5 | 363 | atomic_t count; /* reference count */ |
a6ce4932 | 364 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 365 | struct cifs_search_info srch_inf; |
3bc303c2 | 366 | struct slow_work oplock_break; /* slow_work job for oplock breaks */ |
1da177e4 LT |
367 | }; |
368 | ||
6ab409b5 DK |
369 | /* Take a reference on the file private data */ |
370 | static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file) | |
371 | { | |
372 | atomic_inc(&cifs_file->count); | |
373 | } | |
374 | ||
375 | /* Release a reference on the file private data */ | |
376 | static inline void cifsFileInfo_put(struct cifsFileInfo *cifs_file) | |
377 | { | |
48541bd3 JL |
378 | if (atomic_dec_and_test(&cifs_file->count)) { |
379 | iput(cifs_file->pInode); | |
6ab409b5 | 380 | kfree(cifs_file); |
48541bd3 | 381 | } |
6ab409b5 DK |
382 | } |
383 | ||
1da177e4 LT |
384 | /* |
385 | * One of these for each file inode | |
386 | */ | |
387 | ||
388 | struct cifsInodeInfo { | |
389 | struct list_head lockList; | |
d38d8c74 | 390 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 LT |
391 | struct list_head openFileList; |
392 | int write_behind_rc; | |
393 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ | |
1da177e4 | 394 | unsigned long time; /* jiffies of last update/check of inode */ |
4b18f2a9 SF |
395 | bool clientCanCacheRead:1; /* read oplock */ |
396 | bool clientCanCacheAll:1; /* read and writebehind oplock */ | |
9a8165fc | 397 | bool delete_pending:1; /* DELETE_ON_CLOSE is set */ |
df2cf170 | 398 | bool invalid_mapping:1; /* pagecache is invalid */ |
fbec9ab9 | 399 | u64 server_eof; /* current file size on server */ |
cc0bad75 | 400 | u64 uniqueid; /* server inode number */ |
1da177e4 LT |
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 | ||
ab2f218f | 416 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
417 | { |
418 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
419 | return '/'; | |
420 | else | |
421 | return '\\'; | |
422 | } | |
1da177e4 | 423 | |
a4544347 SF |
424 | #ifdef CONFIG_CIFS_STATS |
425 | #define cifs_stats_inc atomic_inc | |
426 | ||
427 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, | |
428 | unsigned int bytes) | |
429 | { | |
430 | if (bytes) { | |
431 | spin_lock(&tcon->stat_lock); | |
432 | tcon->bytes_written += bytes; | |
433 | spin_unlock(&tcon->stat_lock); | |
434 | } | |
435 | } | |
436 | ||
437 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, | |
438 | unsigned int bytes) | |
439 | { | |
440 | spin_lock(&tcon->stat_lock); | |
441 | tcon->bytes_read += bytes; | |
442 | spin_unlock(&tcon->stat_lock); | |
443 | } | |
444 | #else | |
445 | ||
d38d8c74 SF |
446 | #define cifs_stats_inc(field) do {} while (0) |
447 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
448 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
449 | |
450 | #endif | |
451 | ||
1da177e4 LT |
452 | /* one of these for every pending CIFS request to the server */ |
453 | struct mid_q_entry { | |
454 | struct list_head qhead; /* mids waiting on reply from this server */ | |
455 | __u16 mid; /* multiplex id */ | |
456 | __u16 pid; /* process id */ | |
457 | __u32 sequence_number; /* for CIFS signing */ | |
1047abc1 SF |
458 | unsigned long when_alloc; /* when mid was created */ |
459 | #ifdef CONFIG_CIFS_STATS2 | |
460 | unsigned long when_sent; /* time when smb send finished */ | |
461 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
462 | #endif | |
1da177e4 LT |
463 | struct task_struct *tsk; /* task waiting for response */ |
464 | struct smb_hdr *resp_buf; /* response buffer */ | |
465 | int midState; /* wish this were enum but can not pass to wait_event */ | |
c81156dd | 466 | __u8 command; /* smb command code */ |
4b18f2a9 SF |
467 | bool largeBuf:1; /* if valid response, is pointer to large buf */ |
468 | bool multiRsp:1; /* multiple trans2 responses for one request */ | |
469 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
470 | }; |
471 | ||
472 | struct oplock_q_entry { | |
473 | struct list_head qhead; | |
d38d8c74 SF |
474 | struct inode *pinode; |
475 | struct cifsTconInfo *tcon; | |
1da177e4 LT |
476 | __u16 netfid; |
477 | }; | |
478 | ||
ff5dbd9e SF |
479 | /* for pending dnotify requests */ |
480 | struct dir_notify_req { | |
481 | struct list_head lhead; | |
482 | __le16 Pid; | |
483 | __le16 PidHigh; | |
484 | __u16 Mid; | |
485 | __u16 Tid; | |
486 | __u16 Uid; | |
487 | __u16 netfid; | |
488 | __u32 filter; /* CompletionFilter (for multishot) */ | |
489 | int multishot; | |
d38d8c74 | 490 | struct file *pfile; |
ff5dbd9e SF |
491 | }; |
492 | ||
366781c1 SF |
493 | struct dfs_info3_param { |
494 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 495 | int path_consumed; |
366781c1 SF |
496 | int server_type; |
497 | int ref_flag; | |
498 | char *path_name; | |
499 | char *node_name; | |
500 | }; | |
501 | ||
cc0bad75 JL |
502 | /* |
503 | * common struct for holding inode info when searching for or updating an | |
504 | * inode with new info | |
505 | */ | |
506 | ||
507 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
508 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
509 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 510 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
511 | |
512 | struct cifs_fattr { | |
513 | u32 cf_flags; | |
514 | u32 cf_cifsattrs; | |
515 | u64 cf_uniqueid; | |
516 | u64 cf_eof; | |
517 | u64 cf_bytes; | |
518 | uid_t cf_uid; | |
519 | gid_t cf_gid; | |
520 | umode_t cf_mode; | |
521 | dev_t cf_rdev; | |
522 | unsigned int cf_nlink; | |
523 | unsigned int cf_dtype; | |
524 | struct timespec cf_atime; | |
525 | struct timespec cf_mtime; | |
526 | struct timespec cf_ctime; | |
527 | }; | |
528 | ||
366781c1 SF |
529 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
530 | { | |
531 | if (param) { | |
532 | kfree(param->path_name); | |
533 | kfree(param->node_name); | |
534 | kfree(param); | |
535 | } | |
536 | } | |
537 | ||
538 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
539 | int number_of_items) | |
540 | { | |
541 | int i; | |
542 | if ((number_of_items == 0) || (param == NULL)) | |
543 | return; | |
544 | for (i = 0; i < number_of_items; i++) { | |
545 | kfree(param[i].path_name); | |
546 | kfree(param[i].node_name); | |
547 | } | |
548 | kfree(param); | |
549 | } | |
550 | ||
1da177e4 LT |
551 | #define MID_FREE 0 |
552 | #define MID_REQUEST_ALLOCATED 1 | |
553 | #define MID_REQUEST_SUBMITTED 2 | |
554 | #define MID_RESPONSE_RECEIVED 4 | |
555 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
556 | #define MID_NO_RESP_NEEDED 0x10 | |
ec637e3f SF |
557 | |
558 | /* Types of response buffer returned from SendReceive2 */ | |
559 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
560 | #define CIFS_SMALL_BUFFER 1 | |
561 | #define CIFS_LARGE_BUFFER 2 | |
562 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 563 | |
133672ef SF |
564 | /* Type of Request to SendReceive2 */ |
565 | #define CIFS_STD_OP 0 /* normal request timeout */ | |
566 | #define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */ | |
567 | #define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */ | |
568 | #define CIFS_BLOCKING_OP 4 /* operation can block */ | |
569 | #define CIFS_ASYNC_OP 8 /* do not wait for response */ | |
570 | #define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */ | |
571 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ | |
572 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
573 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
574 | ||
3979877e SF |
575 | /* Security Flags: indicate type of session setup needed */ |
576 | #define CIFSSEC_MAY_SIGN 0x00001 | |
577 | #define CIFSSEC_MAY_NTLM 0x00002 | |
578 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
579 | #define CIFSSEC_MAY_KRB5 0x00008 | |
580 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
581 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
582 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
583 | #else |
584 | #define CIFSSEC_MAY_LANMAN 0 | |
585 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
586 | #endif /* weak passwords */ |
587 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 588 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
589 | |
590 | #define CIFSSEC_MUST_SIGN 0x01001 | |
591 | /* note that only one of the following can be set so the | |
592 | result of setting MUST flags more than once will be to | |
593 | require use of the stronger protocol */ | |
594 | #define CIFSSEC_MUST_NTLM 0x02002 | |
595 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
596 | #define CIFSSEC_MUST_KRB5 0x08008 | |
597 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
598 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
599 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 600 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 601 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 602 | #else |
20d1752f | 603 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 604 | #endif /* UPCALL */ |
0d3a01fa JL |
605 | #else /* do not allow weak pw hash */ |
606 | #ifdef CONFIG_CIFS_UPCALL | |
ac683924 | 607 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 608 | #else |
ac683924 | 609 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 610 | #endif /* UPCALL */ |
3979877e SF |
611 | #endif /* WEAK_PW_HASH */ |
612 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 613 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 614 | |
ef571cad SP |
615 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
616 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 617 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
618 | /* |
619 | ***************************************************************** | |
620 | * All constants go here | |
621 | ***************************************************************** | |
622 | */ | |
623 | ||
624 | #define UID_HASH (16) | |
625 | ||
626 | /* | |
627 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
628 | * following to be declared. | |
629 | */ | |
630 | ||
631 | /**************************************************************************** | |
632 | * Locking notes. All updates to global variables and lists should be | |
633 | * protected by spinlocks or semaphores. | |
634 | * | |
635 | * Spinlocks | |
636 | * --------- | |
637 | * GlobalMid_Lock protects: | |
638 | * list operations on pending_mid_q and oplockQ | |
639 | * updates to XID counters, multiplex id and SMB sequence numbers | |
640 | * GlobalSMBSesLock protects: | |
641 | * list operations on tcp and SMB session lists and tCon lists | |
642 | * f_owner.lock protects certain per file struct operations | |
643 | * mapping->page_lock protects certain per page operations | |
644 | * | |
645 | * Semaphores | |
646 | * ---------- | |
647 | * sesSem operations on smb session | |
648 | * tconSem operations on tree connection | |
d38d8c74 | 649 | * fh_sem file handle reconnection operations |
1da177e4 LT |
650 | * |
651 | ****************************************************************************/ | |
652 | ||
653 | #ifdef DECLARE_GLOBALS_HERE | |
654 | #define GLOBAL_EXTERN | |
655 | #else | |
656 | #define GLOBAL_EXTERN extern | |
657 | #endif | |
658 | ||
e7ddee90 JL |
659 | /* |
660 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 661 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 662 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 663 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
664 | * by iterating over cifs_tcp_ses_list |
665 | */ | |
666 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
667 | ||
f1987b44 JL |
668 | /* |
669 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
670 | * tcp session, and the list of tcon's per smb session. It also protects | |
671 | * the reference counters for the server, smb session, and tcon. Finally, | |
672 | * changes to the tcon->tidStatus should be done while holding this lock. | |
673 | */ | |
e7ddee90 | 674 | GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
675 | |
676 | /* | |
677 | * This lock protects the cifs_file->llist and cifs_file->flist | |
678 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
679 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
680 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
681 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
682 | */ | |
683 | GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; | |
1da177e4 | 684 | |
99ee4dbd SF |
685 | /* Outstanding dir notify requests */ |
686 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
687 | /* DirNotify response queue */ | |
688 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
ff5dbd9e | 689 | |
1da177e4 LT |
690 | /* |
691 | * Global transaction id (XID) information | |
692 | */ | |
693 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 694 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 695 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
696 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
697 | /* on midQ entries */ | |
1da177e4 LT |
698 | GLOBAL_EXTERN char Local_System_Name[15]; |
699 | ||
700 | /* | |
701 | * Global counters, updated atomically | |
702 | */ | |
703 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
704 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
705 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
706 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
707 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
708 | ||
aaa9bbe0 | 709 | /* Various Debug counters */ |
4498eed5 SF |
710 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
711 | #ifdef CONFIG_CIFS_STATS2 | |
712 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
713 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
714 | #endif | |
715 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
716 | GLOBAL_EXTERN atomic_t midCount; |
717 | ||
718 | /* Misc globals */ | |
254e55ed | 719 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions |
1da177e4 | 720 | to be established on existing mount if we |
d38d8c74 | 721 | have the uid/password or Kerberos credential |
1da177e4 LT |
722 | or equivalent for current user */ |
723 | GLOBAL_EXTERN unsigned int oplockEnabled; | |
724 | GLOBAL_EXTERN unsigned int experimEnabled; | |
725 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; | |
04912d6a | 726 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 727 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
728 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
729 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
730 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
731 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
732 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
733 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
734 | ||
3bc303c2 | 735 | extern const struct slow_work_ops cifs_oplock_break_ops; |