]>
Commit | Line | Data |
---|---|---|
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 | 18 | */ |
abd2e44d SJ |
19 | #ifndef _CIFS_GLOB_H |
20 | #define _CIFS_GLOB_H | |
21 | ||
1da177e4 LT |
22 | #include <linux/in.h> |
23 | #include <linux/in6.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
9b646972 | 25 | #include <linux/workqueue.h> |
1da177e4 | 26 | #include "cifs_fs_sb.h" |
442aa310 | 27 | #include "cifsacl.h" |
d2b91521 SP |
28 | #include <crypto/internal/hash.h> |
29 | #include <linux/scatterlist.h> | |
30 | ||
1da177e4 LT |
31 | /* |
32 | * The sizes of various internal tables and strings | |
33 | */ | |
34 | #define MAX_UID_INFO 16 | |
35 | #define MAX_SES_INFO 2 | |
36 | #define MAX_TCON_INFO 4 | |
37 | ||
ef571cad | 38 | #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) |
1da177e4 | 39 | #define MAX_SERVER_SIZE 15 |
d38d8c74 | 40 | #define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */ |
1da177e4 LT |
41 | #define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null |
42 | termination then *2 for unicode versions */ | |
4ff67b72 | 43 | #define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ |
1da177e4 LT |
44 | |
45 | #define CIFS_MIN_RCV_POOL 4 | |
46 | ||
6d20e840 SJ |
47 | /* |
48 | * default attribute cache timeout (jiffies) | |
49 | */ | |
50 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
51 | ||
52 | /* | |
53 | * max attribute cache timeout (jiffies) - 2^30 | |
54 | */ | |
55 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
56 | ||
1da177e4 LT |
57 | /* |
58 | * MAX_REQ is the maximum number of requests that WE will send | |
af901ca1 | 59 | * on one socket concurrently. It also matches the most common |
d38d8c74 | 60 | * value of max multiplex returned by servers. We may |
1da177e4 LT |
61 | * eventually want to use the negotiated value (in case |
62 | * future servers can handle more) when we are more confident that | |
63 | * we will not have problems oveloading the socket with pending | |
64 | * write data. | |
65 | */ | |
d38d8c74 | 66 | #define CIFS_MAX_REQ 50 |
1da177e4 | 67 | |
8ecaf67a JL |
68 | #define RFC1001_NAME_LEN 15 |
69 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
70 | ||
71 | /* currently length of NIP6_FMT */ | |
72 | #define SERVER_NAME_LENGTH 40 | |
1da177e4 LT |
73 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
74 | ||
75 | /* used to define string lengths for reversing unicode strings */ | |
76 | /* (256+1)*2 = 514 */ | |
77 | /* (max path length + 1 for null) * 2 for unicode */ | |
78 | #define MAX_NAME 514 | |
79 | ||
80 | #include "cifspdu.h" | |
81 | ||
1da177e4 LT |
82 | #ifndef XATTR_DOS_ATTRIB |
83 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
84 | #endif | |
85 | ||
1da177e4 LT |
86 | /* |
87 | * CIFS vfs client Status information (based on what we know.) | |
88 | */ | |
89 | ||
6c0f6218 | 90 | /* associated with each tcp and smb session */ |
1da177e4 LT |
91 | enum statusEnum { |
92 | CifsNew = 0, | |
93 | CifsGood, | |
94 | CifsExiting, | |
95 | CifsNeedReconnect | |
96 | }; | |
97 | ||
98 | enum securityEnum { | |
daf5b0b6 | 99 | LANMAN = 0, /* Legacy LANMAN auth */ |
3979877e | 100 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 101 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 102 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
f46c7234 | 103 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ |
c16fefa5 | 104 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
105 | }; |
106 | ||
107 | enum protocolEnum { | |
3ec332ef | 108 | TCP = 0, |
1da177e4 LT |
109 | SCTP |
110 | /* Netbios frames protocol not supported at this time */ | |
111 | }; | |
112 | ||
5f98ca9a | 113 | struct session_key { |
b609f06a | 114 | unsigned int len; |
21e73393 | 115 | char *response; |
b609f06a SF |
116 | }; |
117 | ||
d2b91521 SP |
118 | /* crypto security descriptor definition */ |
119 | struct sdesc { | |
120 | struct shash_desc shash; | |
121 | char ctx[]; | |
122 | }; | |
123 | ||
f7c5445a | 124 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
125 | struct cifs_secmech { |
126 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
127 | struct crypto_shash *md5; /* md5 hash function */ | |
128 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ | |
129 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
130 | }; | |
131 | ||
d3686d54 | 132 | /* per smb session structure/fields */ |
d2b91521 SP |
133 | struct ntlmssp_auth { |
134 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ | |
135 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
136 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 137 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
138 | }; |
139 | ||
442aa310 SF |
140 | struct cifs_cred { |
141 | int uid; | |
142 | int gid; | |
143 | int mode; | |
144 | int cecount; | |
145 | struct cifs_sid osid; | |
146 | struct cifs_sid gsid; | |
147 | struct cifs_ntace *ntaces; | |
148 | struct cifs_ace *aces; | |
149 | }; | |
150 | ||
1da177e4 LT |
151 | /* |
152 | ***************************************************************** | |
153 | * Except the CIFS PDUs themselves all the | |
154 | * globally interesting structs should go here | |
155 | ***************************************************************** | |
156 | */ | |
157 | ||
158 | struct TCP_Server_Info { | |
3b795210 SF |
159 | struct list_head tcp_ses_list; |
160 | struct list_head smb_ses_list; | |
e7ddee90 | 161 | int srv_count; /* reference counter */ |
a10faeb2 | 162 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 163 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
c359cf3c | 164 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 165 | struct socket *ssocket; |
a9f1b85e | 166 | struct sockaddr_storage dstaddr; |
3eb9a889 | 167 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
d38d8c74 | 168 | wait_queue_head_t response_q; |
1da177e4 LT |
169 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
170 | struct list_head pending_mid_q; | |
171 | void *Server_NlsInfo; /* BB - placeholder for future NLS info */ | |
172 | unsigned short server_codepage; /* codepage for the server */ | |
d38d8c74 | 173 | enum protocolEnum protocolType; |
1da177e4 LT |
174 | char versionMajor; |
175 | char versionMinor; | |
4b18f2a9 | 176 | bool svlocal:1; /* local server or remote */ |
edf1ae40 SF |
177 | bool noblocksnd; /* use blocking sendmsg */ |
178 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 179 | bool tcp_nodelay; |
1da177e4 | 180 | atomic_t inFlight; /* number of requests on the wire to server */ |
131afd0b SF |
181 | #ifdef CONFIG_CIFS_STATS2 |
182 | atomic_t inSend; /* requests trying to send */ | |
183 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
184 | #endif | |
1da177e4 | 185 | enum statusEnum tcpStatus; /* what we think the status is */ |
72ca545b | 186 | struct mutex srv_mutex; |
1da177e4 LT |
187 | struct task_struct *tsk; |
188 | char server_GUID[16]; | |
189 | char secMode; | |
190 | enum securityEnum secType; | |
191 | unsigned int maxReq; /* Clients should submit no more */ | |
192 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
193 | /* multiplexed reads or writes */ | |
194 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
195 | /* message size the server can send or receive for non-raw SMBs */ | |
eca6acf9 | 196 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
197 | /* message size the server can send or receive for */ |
198 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
199 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
200 | those that can be specified uniquely with | |
201 | vcnumbers */ | |
1da177e4 LT |
202 | char sessid[4]; /* unique token id for this session */ |
203 | /* (returned on Negotiate */ | |
204 | int capabilities; /* allow selective disabling of caps by smb sess */ | |
de7ed55d | 205 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
1982c344 | 206 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 207 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 208 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 209 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 210 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 211 | struct session_key session_key; |
3a5ff61c | 212 | unsigned long lstrp; /* when we got last response from this server */ |
9bf67e51 | 213 | u16 dialect; /* dialect index that server chose */ |
d2b91521 | 214 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
26efa0ba JL |
215 | /* extended security flavors that server supports */ |
216 | bool sec_kerberos; /* supports plain Kerberos */ | |
217 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
218 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
219 | bool sec_ntlmssp; /* supports NTLMSSP */ | |
5d0d2882 | 220 | bool session_estab; /* mark when very first sess is established */ |
c74093b6 | 221 | struct delayed_work echo; /* echo ping workqueue job */ |
488f1d2d SJ |
222 | #ifdef CONFIG_CIFS_FSCACHE |
223 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
224 | #endif | |
1da177e4 LT |
225 | }; |
226 | ||
1da177e4 LT |
227 | /* |
228 | * Session structure. One of these for each uid session with a particular host | |
229 | */ | |
230 | struct cifsSesInfo { | |
14fbf50d | 231 | struct list_head smb_ses_list; |
3b795210 | 232 | struct list_head tcon_list; |
d7b619cf | 233 | struct mutex session_mutex; |
1da177e4 | 234 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 235 | int ses_count; /* reference counter */ |
1da177e4 | 236 | enum statusEnum status; |
750d1151 | 237 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
238 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
239 | __u16 flags; | |
eca6acf9 | 240 | __u16 vcnum; |
ad009ac9 SF |
241 | char *serverOS; /* name of operating system underlying server */ |
242 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
243 | char *serverDomain; /* security realm of server */ |
244 | int Suid; /* remote smb uid */ | |
3e4b3e1f JL |
245 | uid_t linux_uid; /* overriding owner of files on the mount */ |
246 | uid_t cred_uid; /* owner of credentials */ | |
1da177e4 | 247 | int capabilities; |
d38d8c74 | 248 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 249 | TCP names - will ipv6 and sctp addresses fit? */ |
1da177e4 | 250 | char userName[MAX_USERNAME_SIZE + 1]; |
d38d8c74 SF |
251 | char *domainName; |
252 | char *password; | |
5d0d2882 | 253 | struct session_key auth_key; |
d3686d54 | 254 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
3b795210 | 255 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
1da177e4 | 256 | }; |
9ac00b7d | 257 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 258 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
259 | #define CIFS_SES_OS2 2 |
260 | #define CIFS_SES_W9X 4 | |
261 | /* following flag is set for old servers such as OS2 (and Win95?) | |
262 | which do not negotiate NTLM or POSIX dialects, but instead | |
263 | negotiate one of the older LANMAN dialects */ | |
264 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
265 | /* |
266 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 267 | * session |
1da177e4 LT |
268 | */ |
269 | struct cifsTconInfo { | |
f1987b44 JL |
270 | struct list_head tcon_list; |
271 | int tc_count; | |
1da177e4 | 272 | struct list_head openFileList; |
1da177e4 | 273 | struct cifsSesInfo *ses; /* pointer to session associated with */ |
254e55ed | 274 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 275 | char *nativeFileSystem; |
00e485b0 | 276 | char *password; /* for share-level security */ |
1da177e4 LT |
277 | __u16 tid; /* The 2 byte tree id */ |
278 | __u16 Flags; /* optional support bits */ | |
279 | enum statusEnum tidStatus; | |
1da177e4 LT |
280 | #ifdef CONFIG_CIFS_STATS |
281 | atomic_t num_smbs_sent; | |
282 | atomic_t num_writes; | |
283 | atomic_t num_reads; | |
b298f223 | 284 | atomic_t num_flushes; |
1da177e4 LT |
285 | atomic_t num_oplock_brks; |
286 | atomic_t num_opens; | |
a5a2b489 | 287 | atomic_t num_closes; |
1da177e4 LT |
288 | atomic_t num_deletes; |
289 | atomic_t num_mkdirs; | |
65bc98b0 SF |
290 | atomic_t num_posixopens; |
291 | atomic_t num_posixmkdirs; | |
1da177e4 LT |
292 | atomic_t num_rmdirs; |
293 | atomic_t num_renames; | |
294 | atomic_t num_t2renames; | |
dfb7533b SF |
295 | atomic_t num_ffirst; |
296 | atomic_t num_fnext; | |
297 | atomic_t num_fclose; | |
a5a2b489 SF |
298 | atomic_t num_hardlinks; |
299 | atomic_t num_symlinks; | |
300 | atomic_t num_locks; | |
0a4b92c0 SF |
301 | atomic_t num_acl_get; |
302 | atomic_t num_acl_set; | |
a5a2b489 SF |
303 | #ifdef CONFIG_CIFS_STATS2 |
304 | unsigned long long time_writes; | |
305 | unsigned long long time_reads; | |
306 | unsigned long long time_opens; | |
307 | unsigned long long time_deletes; | |
308 | unsigned long long time_closes; | |
309 | unsigned long long time_mkdirs; | |
310 | unsigned long long time_rmdirs; | |
311 | unsigned long long time_renames; | |
312 | unsigned long long time_t2renames; | |
313 | unsigned long long time_ffirst; | |
314 | unsigned long long time_fnext; | |
315 | unsigned long long time_fclose; | |
316 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
317 | __u64 bytes_read; |
318 | __u64 bytes_written; | |
319 | spinlock_t stat_lock; | |
a5a2b489 | 320 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 321 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 322 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 323 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
324 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
325 | bool retry:1; | |
326 | bool nocase:1; | |
95b1cb90 | 327 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 328 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 329 | for this mount even if server would support */ |
84210e91 | 330 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 331 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 332 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
d03382ce SJ |
333 | #ifdef CONFIG_CIFS_FSCACHE |
334 | u64 resource_id; /* server resource id */ | |
335 | struct fscache_cookie *fscache; /* cookie for share */ | |
336 | #endif | |
c18c842b | 337 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
338 | }; |
339 | ||
7ffec372 JL |
340 | /* |
341 | * This is a refcounted and timestamped container for a tcon pointer. The | |
342 | * container holds a tcon reference. It is considered safe to free one of | |
343 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
344 | * "get" on the container. | |
345 | */ | |
346 | struct tcon_link { | |
b647c35f JL |
347 | struct rb_node tl_rbnode; |
348 | uid_t tl_uid; | |
9d002df4 JL |
349 | unsigned long tl_flags; |
350 | #define TCON_LINK_MASTER 0 | |
351 | #define TCON_LINK_PENDING 1 | |
352 | #define TCON_LINK_IN_TREE 2 | |
353 | unsigned long tl_time; | |
354 | atomic_t tl_count; | |
7ffec372 JL |
355 | struct cifsTconInfo *tl_tcon; |
356 | }; | |
357 | ||
9d002df4 | 358 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 JL |
359 | |
360 | static inline struct cifsTconInfo * | |
361 | tlink_tcon(struct tcon_link *tlink) | |
362 | { | |
9d002df4 | 363 | return tlink->tl_tcon; |
7ffec372 JL |
364 | } |
365 | ||
9d002df4 | 366 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 367 | |
13cfb733 JL |
368 | static inline struct tcon_link * |
369 | cifs_get_tlink(struct tcon_link *tlink) | |
370 | { | |
9d002df4 JL |
371 | if (tlink && !IS_ERR(tlink)) |
372 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
373 | return tlink; |
374 | } | |
375 | ||
7ffec372 | 376 | /* This function is always expected to succeed */ |
9d002df4 | 377 | extern struct cifsTconInfo *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 378 | |
1da177e4 | 379 | /* |
7ee1af76 JA |
380 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
381 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
382 | */ |
383 | struct cifsLockInfo { | |
7ee1af76 JA |
384 | struct list_head llist; /* pointer to next cifsLockInfo */ |
385 | __u64 offset; | |
386 | __u64 length; | |
387 | __u8 type; | |
1da177e4 LT |
388 | }; |
389 | ||
390 | /* | |
391 | * One of these for each open instance of a file | |
392 | */ | |
393 | struct cifs_search_info { | |
394 | loff_t index_of_last_entry; | |
395 | __u16 entries_in_buffer; | |
396 | __u16 info_level; | |
397 | __u32 resume_key; | |
d38d8c74 SF |
398 | char *ntwrk_buf_start; |
399 | char *srch_entries_start; | |
0752f152 | 400 | char *last_entry; |
d38d8c74 | 401 | char *presume_name; |
1da177e4 | 402 | unsigned int resume_name_len; |
4b18f2a9 SF |
403 | bool endOfSearch:1; |
404 | bool emptyDir:1; | |
405 | bool unicode:1; | |
406 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
407 | }; |
408 | ||
409 | struct cifsFileInfo { | |
410 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
411 | struct list_head flist; /* next fid (file instance) for this inode */ | |
412 | unsigned int uid; /* allows finding which FileInfo structure */ | |
413 | __u32 pid; /* process id who opened file */ | |
414 | __u16 netfid; /* file id from remote */ | |
415 | /* BB add lock scope info here if needed */ ; | |
416 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 417 | struct dentry *dentry; |
15886177 | 418 | unsigned int f_flags; |
13cfb733 | 419 | struct tcon_link *tlink; |
796e5661 | 420 | struct mutex lock_mutex; |
7ee1af76 | 421 | struct list_head llist; /* list of byte range locks we have. */ |
4b18f2a9 | 422 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 423 | bool oplock_break_cancelled:1; |
6c0f6218 | 424 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 425 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 426 | struct cifs_search_info srch_inf; |
9b646972 | 427 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
428 | }; |
429 | ||
5f6dbc9e JL |
430 | /* |
431 | * Take a reference on the file private data. Must be called with | |
432 | * cifs_file_list_lock held. | |
433 | */ | |
6ab409b5 DK |
434 | static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file) |
435 | { | |
5f6dbc9e | 436 | ++cifs_file->count; |
6ab409b5 DK |
437 | } |
438 | ||
b33879aa | 439 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 440 | |
1da177e4 LT |
441 | /* |
442 | * One of these for each file inode | |
443 | */ | |
444 | ||
445 | struct cifsInodeInfo { | |
446 | struct list_head lockList; | |
d38d8c74 | 447 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 448 | struct list_head openFileList; |
1da177e4 | 449 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
1da177e4 | 450 | unsigned long time; /* jiffies of last update/check of inode */ |
4b18f2a9 SF |
451 | bool clientCanCacheRead:1; /* read oplock */ |
452 | bool clientCanCacheAll:1; /* read and writebehind oplock */ | |
9a8165fc | 453 | bool delete_pending:1; /* DELETE_ON_CLOSE is set */ |
df2cf170 | 454 | bool invalid_mapping:1; /* pagecache is invalid */ |
fbec9ab9 | 455 | u64 server_eof; /* current file size on server */ |
cc0bad75 | 456 | u64 uniqueid; /* server inode number */ |
20054bd6 | 457 | u64 createtime; /* creation time on server */ |
9451a9a5 SJ |
458 | #ifdef CONFIG_CIFS_FSCACHE |
459 | struct fscache_cookie *fscache; | |
460 | #endif | |
1da177e4 LT |
461 | struct inode vfs_inode; |
462 | }; | |
463 | ||
464 | static inline struct cifsInodeInfo * | |
465 | CIFS_I(struct inode *inode) | |
466 | { | |
467 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
468 | } | |
469 | ||
470 | static inline struct cifs_sb_info * | |
471 | CIFS_SB(struct super_block *sb) | |
472 | { | |
473 | return sb->s_fs_info; | |
474 | } | |
475 | ||
ab2f218f | 476 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
477 | { |
478 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
479 | return '/'; | |
480 | else | |
481 | return '\\'; | |
482 | } | |
1da177e4 | 483 | |
a4544347 SF |
484 | #ifdef CONFIG_CIFS_STATS |
485 | #define cifs_stats_inc atomic_inc | |
486 | ||
487 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, | |
488 | unsigned int bytes) | |
489 | { | |
490 | if (bytes) { | |
491 | spin_lock(&tcon->stat_lock); | |
492 | tcon->bytes_written += bytes; | |
493 | spin_unlock(&tcon->stat_lock); | |
494 | } | |
495 | } | |
496 | ||
497 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, | |
498 | unsigned int bytes) | |
499 | { | |
500 | spin_lock(&tcon->stat_lock); | |
501 | tcon->bytes_read += bytes; | |
502 | spin_unlock(&tcon->stat_lock); | |
503 | } | |
504 | #else | |
505 | ||
d38d8c74 SF |
506 | #define cifs_stats_inc(field) do {} while (0) |
507 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
508 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
509 | |
510 | #endif | |
511 | ||
2b84a36c JL |
512 | struct mid_q_entry; |
513 | ||
514 | /* | |
515 | * This is the prototype for the mid callback function. When creating one, | |
516 | * take special care to avoid deadlocks. Things to bear in mind: | |
517 | * | |
518 | * - it will be called by cifsd | |
519 | * - the GlobalMid_Lock will be held | |
520 | * - the mid will be removed from the pending_mid_q list | |
521 | */ | |
522 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
523 | ||
1da177e4 LT |
524 | /* one of these for every pending CIFS request to the server */ |
525 | struct mid_q_entry { | |
526 | struct list_head qhead; /* mids waiting on reply from this server */ | |
527 | __u16 mid; /* multiplex id */ | |
528 | __u16 pid; /* process id */ | |
529 | __u32 sequence_number; /* for CIFS signing */ | |
1047abc1 SF |
530 | unsigned long when_alloc; /* when mid was created */ |
531 | #ifdef CONFIG_CIFS_STATS2 | |
532 | unsigned long when_sent; /* time when smb send finished */ | |
533 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
534 | #endif | |
2b84a36c JL |
535 | mid_callback_t *callback; /* call completion callback */ |
536 | void *callback_data; /* general purpose pointer for callback */ | |
1da177e4 LT |
537 | struct smb_hdr *resp_buf; /* response buffer */ |
538 | int midState; /* wish this were enum but can not pass to wait_event */ | |
c81156dd | 539 | __u8 command; /* smb command code */ |
4b18f2a9 SF |
540 | bool largeBuf:1; /* if valid response, is pointer to large buf */ |
541 | bool multiRsp:1; /* multiple trans2 responses for one request */ | |
542 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
543 | }; |
544 | ||
545 | struct oplock_q_entry { | |
546 | struct list_head qhead; | |
d38d8c74 SF |
547 | struct inode *pinode; |
548 | struct cifsTconInfo *tcon; | |
1da177e4 LT |
549 | __u16 netfid; |
550 | }; | |
551 | ||
ff5dbd9e SF |
552 | /* for pending dnotify requests */ |
553 | struct dir_notify_req { | |
13cd4b7f SF |
554 | struct list_head lhead; |
555 | __le16 Pid; | |
556 | __le16 PidHigh; | |
557 | __u16 Mid; | |
558 | __u16 Tid; | |
559 | __u16 Uid; | |
560 | __u16 netfid; | |
561 | __u32 filter; /* CompletionFilter (for multishot) */ | |
562 | int multishot; | |
563 | struct file *pfile; | |
ff5dbd9e SF |
564 | }; |
565 | ||
366781c1 SF |
566 | struct dfs_info3_param { |
567 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 568 | int path_consumed; |
366781c1 SF |
569 | int server_type; |
570 | int ref_flag; | |
571 | char *path_name; | |
572 | char *node_name; | |
573 | }; | |
574 | ||
cc0bad75 JL |
575 | /* |
576 | * common struct for holding inode info when searching for or updating an | |
577 | * inode with new info | |
578 | */ | |
579 | ||
580 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
581 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
582 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 583 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
584 | |
585 | struct cifs_fattr { | |
586 | u32 cf_flags; | |
587 | u32 cf_cifsattrs; | |
588 | u64 cf_uniqueid; | |
589 | u64 cf_eof; | |
590 | u64 cf_bytes; | |
20054bd6 | 591 | u64 cf_createtime; |
cc0bad75 JL |
592 | uid_t cf_uid; |
593 | gid_t cf_gid; | |
594 | umode_t cf_mode; | |
595 | dev_t cf_rdev; | |
596 | unsigned int cf_nlink; | |
597 | unsigned int cf_dtype; | |
598 | struct timespec cf_atime; | |
599 | struct timespec cf_mtime; | |
600 | struct timespec cf_ctime; | |
601 | }; | |
602 | ||
366781c1 SF |
603 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
604 | { | |
605 | if (param) { | |
606 | kfree(param->path_name); | |
607 | kfree(param->node_name); | |
608 | kfree(param); | |
609 | } | |
610 | } | |
611 | ||
612 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
613 | int number_of_items) | |
614 | { | |
615 | int i; | |
616 | if ((number_of_items == 0) || (param == NULL)) | |
617 | return; | |
618 | for (i = 0; i < number_of_items; i++) { | |
619 | kfree(param[i].path_name); | |
620 | kfree(param[i].node_name); | |
621 | } | |
622 | kfree(param); | |
623 | } | |
624 | ||
1da177e4 LT |
625 | #define MID_FREE 0 |
626 | #define MID_REQUEST_ALLOCATED 1 | |
627 | #define MID_REQUEST_SUBMITTED 2 | |
628 | #define MID_RESPONSE_RECEIVED 4 | |
629 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
630 | #define MID_NO_RESP_NEEDED 0x10 | |
ec637e3f SF |
631 | |
632 | /* Types of response buffer returned from SendReceive2 */ | |
633 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
634 | #define CIFS_SMALL_BUFFER 1 | |
635 | #define CIFS_LARGE_BUFFER 2 | |
636 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 637 | |
133672ef SF |
638 | /* Type of Request to SendReceive2 */ |
639 | #define CIFS_STD_OP 0 /* normal request timeout */ | |
640 | #define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */ | |
641 | #define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */ | |
642 | #define CIFS_BLOCKING_OP 4 /* operation can block */ | |
643 | #define CIFS_ASYNC_OP 8 /* do not wait for response */ | |
644 | #define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */ | |
645 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ | |
646 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
647 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
648 | ||
3979877e SF |
649 | /* Security Flags: indicate type of session setup needed */ |
650 | #define CIFSSEC_MAY_SIGN 0x00001 | |
651 | #define CIFSSEC_MAY_NTLM 0x00002 | |
652 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
653 | #define CIFSSEC_MAY_KRB5 0x00008 | |
654 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
655 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
656 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
657 | #else |
658 | #define CIFSSEC_MAY_LANMAN 0 | |
659 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
660 | #endif /* weak passwords */ |
661 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 662 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
663 | |
664 | #define CIFSSEC_MUST_SIGN 0x01001 | |
665 | /* note that only one of the following can be set so the | |
666 | result of setting MUST flags more than once will be to | |
667 | require use of the stronger protocol */ | |
668 | #define CIFSSEC_MUST_NTLM 0x02002 | |
669 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
670 | #define CIFSSEC_MUST_KRB5 0x08008 | |
671 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
672 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
673 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 674 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 675 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 676 | #else |
20d1752f | 677 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 678 | #endif /* UPCALL */ |
0d3a01fa JL |
679 | #else /* do not allow weak pw hash */ |
680 | #ifdef CONFIG_CIFS_UPCALL | |
ac683924 | 681 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 682 | #else |
ac683924 | 683 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 684 | #endif /* UPCALL */ |
3979877e SF |
685 | #endif /* WEAK_PW_HASH */ |
686 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 687 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 688 | |
ef571cad SP |
689 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
690 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 691 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
692 | /* |
693 | ***************************************************************** | |
694 | * All constants go here | |
695 | ***************************************************************** | |
696 | */ | |
697 | ||
698 | #define UID_HASH (16) | |
699 | ||
700 | /* | |
701 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
702 | * following to be declared. | |
703 | */ | |
704 | ||
705 | /**************************************************************************** | |
706 | * Locking notes. All updates to global variables and lists should be | |
707 | * protected by spinlocks or semaphores. | |
708 | * | |
709 | * Spinlocks | |
710 | * --------- | |
711 | * GlobalMid_Lock protects: | |
712 | * list operations on pending_mid_q and oplockQ | |
713 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 714 | * cifs_file_list_lock protects: |
1da177e4 LT |
715 | * list operations on tcp and SMB session lists and tCon lists |
716 | * f_owner.lock protects certain per file struct operations | |
717 | * mapping->page_lock protects certain per page operations | |
718 | * | |
719 | * Semaphores | |
720 | * ---------- | |
721 | * sesSem operations on smb session | |
722 | * tconSem operations on tree connection | |
d38d8c74 | 723 | * fh_sem file handle reconnection operations |
1da177e4 LT |
724 | * |
725 | ****************************************************************************/ | |
726 | ||
727 | #ifdef DECLARE_GLOBALS_HERE | |
728 | #define GLOBAL_EXTERN | |
729 | #else | |
730 | #define GLOBAL_EXTERN extern | |
731 | #endif | |
732 | ||
e7ddee90 JL |
733 | /* |
734 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 735 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 736 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 737 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
738 | * by iterating over cifs_tcp_ses_list |
739 | */ | |
740 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
741 | ||
f1987b44 JL |
742 | /* |
743 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
744 | * tcp session, and the list of tcon's per smb session. It also protects | |
745 | * the reference counters for the server, smb session, and tcon. Finally, | |
746 | * changes to the tcon->tidStatus should be done while holding this lock. | |
747 | */ | |
3f9bcca7 | 748 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
749 | |
750 | /* | |
751 | * This lock protects the cifs_file->llist and cifs_file->flist | |
752 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
753 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
754 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
755 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
756 | */ | |
4477288a | 757 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 758 | |
99ee4dbd SF |
759 | /* Outstanding dir notify requests */ |
760 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
761 | /* DirNotify response queue */ | |
762 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
ff5dbd9e | 763 | |
1da177e4 LT |
764 | /* |
765 | * Global transaction id (XID) information | |
766 | */ | |
767 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 768 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 769 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
770 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
771 | /* on midQ entries */ | |
1da177e4 LT |
772 | /* |
773 | * Global counters, updated atomically | |
774 | */ | |
775 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
776 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
777 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
778 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
779 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
780 | ||
aaa9bbe0 | 781 | /* Various Debug counters */ |
4498eed5 SF |
782 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
783 | #ifdef CONFIG_CIFS_STATS2 | |
784 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
785 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
786 | #endif | |
787 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
788 | GLOBAL_EXTERN atomic_t midCount; |
789 | ||
790 | /* Misc globals */ | |
254e55ed | 791 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions |
1da177e4 | 792 | to be established on existing mount if we |
d38d8c74 | 793 | have the uid/password or Kerberos credential |
1da177e4 LT |
794 | or equivalent for current user */ |
795 | GLOBAL_EXTERN unsigned int oplockEnabled; | |
796 | GLOBAL_EXTERN unsigned int experimEnabled; | |
797 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; | |
04912d6a | 798 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 799 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
800 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
801 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
802 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
803 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
804 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
805 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
806 | ||
fda35943 SF |
807 | /* reconnect after this many failed echo attempts */ |
808 | GLOBAL_EXTERN unsigned short echo_retries; | |
809 | ||
9b646972 TH |
810 | void cifs_oplock_break(struct work_struct *work); |
811 | void cifs_oplock_break_get(struct cifsFileInfo *cfile); | |
812 | void cifs_oplock_break_put(struct cifsFileInfo *cfile); | |
3b7433b8 | 813 | |
3bc303c2 | 814 | extern const struct slow_work_ops cifs_oplock_break_ops; |
abd2e44d SJ |
815 | |
816 | #endif /* _CIFS_GLOB_H */ |