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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 | 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]; |
c3dccf48 | 164 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 165 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 166 | struct socket *ssocket; |
a9f1b85e | 167 | struct sockaddr_storage dstaddr; |
3eb9a889 | 168 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
d38d8c74 | 169 | wait_queue_head_t response_q; |
1da177e4 LT |
170 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
171 | struct list_head pending_mid_q; | |
edf1ae40 SF |
172 | bool noblocksnd; /* use blocking sendmsg */ |
173 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 174 | bool tcp_nodelay; |
1da177e4 | 175 | atomic_t inFlight; /* number of requests on the wire to server */ |
72ca545b | 176 | struct mutex srv_mutex; |
1da177e4 LT |
177 | struct task_struct *tsk; |
178 | char server_GUID[16]; | |
179 | char secMode; | |
c3dccf48 JL |
180 | bool session_estab; /* mark when very first sess is established */ |
181 | u16 dialect; /* dialect index that server chose */ | |
1da177e4 LT |
182 | enum securityEnum secType; |
183 | unsigned int maxReq; /* Clients should submit no more */ | |
184 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
185 | /* multiplexed reads or writes */ | |
186 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
187 | /* message size the server can send or receive for non-raw SMBs */ | |
eca6acf9 | 188 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
189 | /* message size the server can send or receive for */ |
190 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
191 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
192 | those that can be specified uniquely with | |
193 | vcnumbers */ | |
1da177e4 | 194 | int capabilities; /* allow selective disabling of caps by smb sess */ |
de7ed55d | 195 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
1982c344 | 196 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 197 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 198 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 199 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 200 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 201 | struct session_key session_key; |
3a5ff61c | 202 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 203 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
26efa0ba | 204 | /* extended security flavors that server supports */ |
c3dccf48 JL |
205 | bool sec_ntlmssp; /* supports NTLMSSP */ |
206 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
207 | bool sec_kerberos; /* supports plain Kerberos */ |
208 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
c74093b6 | 209 | struct delayed_work echo; /* echo ping workqueue job */ |
488f1d2d SJ |
210 | #ifdef CONFIG_CIFS_FSCACHE |
211 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
212 | #endif | |
c3dccf48 JL |
213 | #ifdef CONFIG_CIFS_STATS2 |
214 | atomic_t inSend; /* requests trying to send */ | |
215 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ | |
216 | #endif | |
1da177e4 LT |
217 | }; |
218 | ||
1da177e4 LT |
219 | /* |
220 | * Session structure. One of these for each uid session with a particular host | |
221 | */ | |
222 | struct cifsSesInfo { | |
14fbf50d | 223 | struct list_head smb_ses_list; |
3b795210 | 224 | struct list_head tcon_list; |
d7b619cf | 225 | struct mutex session_mutex; |
1da177e4 | 226 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 227 | int ses_count; /* reference counter */ |
1da177e4 | 228 | enum statusEnum status; |
750d1151 | 229 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
230 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
231 | __u16 flags; | |
eca6acf9 | 232 | __u16 vcnum; |
ad009ac9 SF |
233 | char *serverOS; /* name of operating system underlying server */ |
234 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
235 | char *serverDomain; /* security realm of server */ |
236 | int Suid; /* remote smb uid */ | |
3e4b3e1f JL |
237 | uid_t linux_uid; /* overriding owner of files on the mount */ |
238 | uid_t cred_uid; /* owner of credentials */ | |
1da177e4 | 239 | int capabilities; |
d38d8c74 | 240 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 241 | TCP names - will ipv6 and sctp addresses fit? */ |
1da177e4 | 242 | char userName[MAX_USERNAME_SIZE + 1]; |
d38d8c74 SF |
243 | char *domainName; |
244 | char *password; | |
5d0d2882 | 245 | struct session_key auth_key; |
d3686d54 | 246 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
3b795210 | 247 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
1da177e4 | 248 | }; |
9ac00b7d | 249 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 250 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
251 | #define CIFS_SES_OS2 2 |
252 | #define CIFS_SES_W9X 4 | |
253 | /* following flag is set for old servers such as OS2 (and Win95?) | |
254 | which do not negotiate NTLM or POSIX dialects, but instead | |
255 | negotiate one of the older LANMAN dialects */ | |
256 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
257 | /* |
258 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 259 | * session |
1da177e4 LT |
260 | */ |
261 | struct cifsTconInfo { | |
f1987b44 JL |
262 | struct list_head tcon_list; |
263 | int tc_count; | |
1da177e4 | 264 | struct list_head openFileList; |
1da177e4 | 265 | struct cifsSesInfo *ses; /* pointer to session associated with */ |
254e55ed | 266 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 267 | char *nativeFileSystem; |
00e485b0 | 268 | char *password; /* for share-level security */ |
1da177e4 LT |
269 | __u16 tid; /* The 2 byte tree id */ |
270 | __u16 Flags; /* optional support bits */ | |
271 | enum statusEnum tidStatus; | |
1da177e4 LT |
272 | #ifdef CONFIG_CIFS_STATS |
273 | atomic_t num_smbs_sent; | |
274 | atomic_t num_writes; | |
275 | atomic_t num_reads; | |
b298f223 | 276 | atomic_t num_flushes; |
1da177e4 LT |
277 | atomic_t num_oplock_brks; |
278 | atomic_t num_opens; | |
a5a2b489 | 279 | atomic_t num_closes; |
1da177e4 LT |
280 | atomic_t num_deletes; |
281 | atomic_t num_mkdirs; | |
65bc98b0 SF |
282 | atomic_t num_posixopens; |
283 | atomic_t num_posixmkdirs; | |
1da177e4 LT |
284 | atomic_t num_rmdirs; |
285 | atomic_t num_renames; | |
286 | atomic_t num_t2renames; | |
dfb7533b SF |
287 | atomic_t num_ffirst; |
288 | atomic_t num_fnext; | |
289 | atomic_t num_fclose; | |
a5a2b489 SF |
290 | atomic_t num_hardlinks; |
291 | atomic_t num_symlinks; | |
292 | atomic_t num_locks; | |
0a4b92c0 SF |
293 | atomic_t num_acl_get; |
294 | atomic_t num_acl_set; | |
a5a2b489 SF |
295 | #ifdef CONFIG_CIFS_STATS2 |
296 | unsigned long long time_writes; | |
297 | unsigned long long time_reads; | |
298 | unsigned long long time_opens; | |
299 | unsigned long long time_deletes; | |
300 | unsigned long long time_closes; | |
301 | unsigned long long time_mkdirs; | |
302 | unsigned long long time_rmdirs; | |
303 | unsigned long long time_renames; | |
304 | unsigned long long time_t2renames; | |
305 | unsigned long long time_ffirst; | |
306 | unsigned long long time_fnext; | |
307 | unsigned long long time_fclose; | |
308 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
309 | __u64 bytes_read; |
310 | __u64 bytes_written; | |
311 | spinlock_t stat_lock; | |
a5a2b489 | 312 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 313 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 314 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 315 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
316 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
317 | bool retry:1; | |
318 | bool nocase:1; | |
95b1cb90 | 319 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 320 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 321 | for this mount even if server would support */ |
84210e91 | 322 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 323 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 324 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
d03382ce SJ |
325 | #ifdef CONFIG_CIFS_FSCACHE |
326 | u64 resource_id; /* server resource id */ | |
327 | struct fscache_cookie *fscache; /* cookie for share */ | |
328 | #endif | |
c18c842b | 329 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
330 | }; |
331 | ||
7ffec372 JL |
332 | /* |
333 | * This is a refcounted and timestamped container for a tcon pointer. The | |
334 | * container holds a tcon reference. It is considered safe to free one of | |
335 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
336 | * "get" on the container. | |
337 | */ | |
338 | struct tcon_link { | |
b647c35f JL |
339 | struct rb_node tl_rbnode; |
340 | uid_t tl_uid; | |
9d002df4 JL |
341 | unsigned long tl_flags; |
342 | #define TCON_LINK_MASTER 0 | |
343 | #define TCON_LINK_PENDING 1 | |
344 | #define TCON_LINK_IN_TREE 2 | |
345 | unsigned long tl_time; | |
346 | atomic_t tl_count; | |
7ffec372 JL |
347 | struct cifsTconInfo *tl_tcon; |
348 | }; | |
349 | ||
9d002df4 | 350 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 JL |
351 | |
352 | static inline struct cifsTconInfo * | |
353 | tlink_tcon(struct tcon_link *tlink) | |
354 | { | |
9d002df4 | 355 | return tlink->tl_tcon; |
7ffec372 JL |
356 | } |
357 | ||
9d002df4 | 358 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 359 | |
13cfb733 JL |
360 | static inline struct tcon_link * |
361 | cifs_get_tlink(struct tcon_link *tlink) | |
362 | { | |
9d002df4 JL |
363 | if (tlink && !IS_ERR(tlink)) |
364 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
365 | return tlink; |
366 | } | |
367 | ||
7ffec372 | 368 | /* This function is always expected to succeed */ |
9d002df4 | 369 | extern struct cifsTconInfo *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 370 | |
1da177e4 | 371 | /* |
7ee1af76 JA |
372 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
373 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
374 | */ |
375 | struct cifsLockInfo { | |
7ee1af76 JA |
376 | struct list_head llist; /* pointer to next cifsLockInfo */ |
377 | __u64 offset; | |
378 | __u64 length; | |
379 | __u8 type; | |
1da177e4 LT |
380 | }; |
381 | ||
382 | /* | |
383 | * One of these for each open instance of a file | |
384 | */ | |
385 | struct cifs_search_info { | |
386 | loff_t index_of_last_entry; | |
387 | __u16 entries_in_buffer; | |
388 | __u16 info_level; | |
389 | __u32 resume_key; | |
d38d8c74 SF |
390 | char *ntwrk_buf_start; |
391 | char *srch_entries_start; | |
0752f152 | 392 | char *last_entry; |
d38d8c74 | 393 | char *presume_name; |
1da177e4 | 394 | unsigned int resume_name_len; |
4b18f2a9 SF |
395 | bool endOfSearch:1; |
396 | bool emptyDir:1; | |
397 | bool unicode:1; | |
398 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
399 | }; |
400 | ||
401 | struct cifsFileInfo { | |
402 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
403 | struct list_head flist; /* next fid (file instance) for this inode */ | |
404 | unsigned int uid; /* allows finding which FileInfo structure */ | |
405 | __u32 pid; /* process id who opened file */ | |
406 | __u16 netfid; /* file id from remote */ | |
407 | /* BB add lock scope info here if needed */ ; | |
408 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 409 | struct dentry *dentry; |
15886177 | 410 | unsigned int f_flags; |
13cfb733 | 411 | struct tcon_link *tlink; |
796e5661 | 412 | struct mutex lock_mutex; |
7ee1af76 | 413 | struct list_head llist; /* list of byte range locks we have. */ |
4b18f2a9 | 414 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 415 | bool oplock_break_cancelled:1; |
6c0f6218 | 416 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 417 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 418 | struct cifs_search_info srch_inf; |
9b646972 | 419 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
420 | }; |
421 | ||
5f6dbc9e JL |
422 | /* |
423 | * Take a reference on the file private data. Must be called with | |
424 | * cifs_file_list_lock held. | |
425 | */ | |
6ab409b5 DK |
426 | static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file) |
427 | { | |
5f6dbc9e | 428 | ++cifs_file->count; |
6ab409b5 DK |
429 | } |
430 | ||
b33879aa | 431 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 432 | |
1da177e4 LT |
433 | /* |
434 | * One of these for each file inode | |
435 | */ | |
436 | ||
437 | struct cifsInodeInfo { | |
438 | struct list_head lockList; | |
d38d8c74 | 439 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 440 | struct list_head openFileList; |
1da177e4 | 441 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
aae62fdb JL |
442 | bool clientCanCacheRead; /* read oplock */ |
443 | bool clientCanCacheAll; /* read and writebehind oplock */ | |
444 | bool delete_pending; /* DELETE_ON_CLOSE is set */ | |
445 | bool invalid_mapping; /* pagecache is invalid */ | |
446 | unsigned long time; /* jiffies of last update of inode */ | |
fbec9ab9 | 447 | u64 server_eof; /* current file size on server */ |
cc0bad75 | 448 | u64 uniqueid; /* server inode number */ |
20054bd6 | 449 | u64 createtime; /* creation time on server */ |
9451a9a5 SJ |
450 | #ifdef CONFIG_CIFS_FSCACHE |
451 | struct fscache_cookie *fscache; | |
452 | #endif | |
1da177e4 LT |
453 | struct inode vfs_inode; |
454 | }; | |
455 | ||
456 | static inline struct cifsInodeInfo * | |
457 | CIFS_I(struct inode *inode) | |
458 | { | |
459 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
460 | } | |
461 | ||
462 | static inline struct cifs_sb_info * | |
463 | CIFS_SB(struct super_block *sb) | |
464 | { | |
465 | return sb->s_fs_info; | |
466 | } | |
467 | ||
ab2f218f | 468 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
469 | { |
470 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
471 | return '/'; | |
472 | else | |
473 | return '\\'; | |
474 | } | |
1da177e4 | 475 | |
a4544347 SF |
476 | #ifdef CONFIG_CIFS_STATS |
477 | #define cifs_stats_inc atomic_inc | |
478 | ||
479 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, | |
480 | unsigned int bytes) | |
481 | { | |
482 | if (bytes) { | |
483 | spin_lock(&tcon->stat_lock); | |
484 | tcon->bytes_written += bytes; | |
485 | spin_unlock(&tcon->stat_lock); | |
486 | } | |
487 | } | |
488 | ||
489 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, | |
490 | unsigned int bytes) | |
491 | { | |
492 | spin_lock(&tcon->stat_lock); | |
493 | tcon->bytes_read += bytes; | |
494 | spin_unlock(&tcon->stat_lock); | |
495 | } | |
496 | #else | |
497 | ||
d38d8c74 SF |
498 | #define cifs_stats_inc(field) do {} while (0) |
499 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
500 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
501 | |
502 | #endif | |
503 | ||
2b84a36c JL |
504 | struct mid_q_entry; |
505 | ||
506 | /* | |
507 | * This is the prototype for the mid callback function. When creating one, | |
508 | * take special care to avoid deadlocks. Things to bear in mind: | |
509 | * | |
510 | * - it will be called by cifsd | |
511 | * - the GlobalMid_Lock will be held | |
512 | * - the mid will be removed from the pending_mid_q list | |
513 | */ | |
514 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
515 | ||
1da177e4 LT |
516 | /* one of these for every pending CIFS request to the server */ |
517 | struct mid_q_entry { | |
518 | struct list_head qhead; /* mids waiting on reply from this server */ | |
519 | __u16 mid; /* multiplex id */ | |
520 | __u16 pid; /* process id */ | |
521 | __u32 sequence_number; /* for CIFS signing */ | |
1047abc1 SF |
522 | unsigned long when_alloc; /* when mid was created */ |
523 | #ifdef CONFIG_CIFS_STATS2 | |
524 | unsigned long when_sent; /* time when smb send finished */ | |
525 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
526 | #endif | |
2b84a36c JL |
527 | mid_callback_t *callback; /* call completion callback */ |
528 | void *callback_data; /* general purpose pointer for callback */ | |
1da177e4 LT |
529 | struct smb_hdr *resp_buf; /* response buffer */ |
530 | int midState; /* wish this were enum but can not pass to wait_event */ | |
c81156dd | 531 | __u8 command; /* smb command code */ |
4b18f2a9 SF |
532 | bool largeBuf:1; /* if valid response, is pointer to large buf */ |
533 | bool multiRsp:1; /* multiple trans2 responses for one request */ | |
534 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
535 | }; |
536 | ||
537 | struct oplock_q_entry { | |
538 | struct list_head qhead; | |
d38d8c74 SF |
539 | struct inode *pinode; |
540 | struct cifsTconInfo *tcon; | |
1da177e4 LT |
541 | __u16 netfid; |
542 | }; | |
543 | ||
ff5dbd9e SF |
544 | /* for pending dnotify requests */ |
545 | struct dir_notify_req { | |
13cd4b7f SF |
546 | struct list_head lhead; |
547 | __le16 Pid; | |
548 | __le16 PidHigh; | |
549 | __u16 Mid; | |
550 | __u16 Tid; | |
551 | __u16 Uid; | |
552 | __u16 netfid; | |
553 | __u32 filter; /* CompletionFilter (for multishot) */ | |
554 | int multishot; | |
555 | struct file *pfile; | |
ff5dbd9e SF |
556 | }; |
557 | ||
366781c1 SF |
558 | struct dfs_info3_param { |
559 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 560 | int path_consumed; |
366781c1 SF |
561 | int server_type; |
562 | int ref_flag; | |
563 | char *path_name; | |
564 | char *node_name; | |
565 | }; | |
566 | ||
cc0bad75 JL |
567 | /* |
568 | * common struct for holding inode info when searching for or updating an | |
569 | * inode with new info | |
570 | */ | |
571 | ||
572 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
573 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
574 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 575 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
576 | |
577 | struct cifs_fattr { | |
578 | u32 cf_flags; | |
579 | u32 cf_cifsattrs; | |
580 | u64 cf_uniqueid; | |
581 | u64 cf_eof; | |
582 | u64 cf_bytes; | |
20054bd6 | 583 | u64 cf_createtime; |
cc0bad75 JL |
584 | uid_t cf_uid; |
585 | gid_t cf_gid; | |
586 | umode_t cf_mode; | |
587 | dev_t cf_rdev; | |
588 | unsigned int cf_nlink; | |
589 | unsigned int cf_dtype; | |
590 | struct timespec cf_atime; | |
591 | struct timespec cf_mtime; | |
592 | struct timespec cf_ctime; | |
593 | }; | |
594 | ||
366781c1 SF |
595 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
596 | { | |
597 | if (param) { | |
598 | kfree(param->path_name); | |
599 | kfree(param->node_name); | |
600 | kfree(param); | |
601 | } | |
602 | } | |
603 | ||
604 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
605 | int number_of_items) | |
606 | { | |
607 | int i; | |
608 | if ((number_of_items == 0) || (param == NULL)) | |
609 | return; | |
610 | for (i = 0; i < number_of_items; i++) { | |
611 | kfree(param[i].path_name); | |
612 | kfree(param[i].node_name); | |
613 | } | |
614 | kfree(param); | |
615 | } | |
616 | ||
1da177e4 LT |
617 | #define MID_FREE 0 |
618 | #define MID_REQUEST_ALLOCATED 1 | |
619 | #define MID_REQUEST_SUBMITTED 2 | |
620 | #define MID_RESPONSE_RECEIVED 4 | |
621 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
622 | #define MID_NO_RESP_NEEDED 0x10 | |
ec637e3f SF |
623 | |
624 | /* Types of response buffer returned from SendReceive2 */ | |
625 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
626 | #define CIFS_SMALL_BUFFER 1 | |
627 | #define CIFS_LARGE_BUFFER 2 | |
628 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 629 | |
133672ef | 630 | /* Type of Request to SendReceive2 */ |
7749981e JL |
631 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
632 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
633 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
634 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
635 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
636 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
637 | ||
3979877e SF |
638 | /* Security Flags: indicate type of session setup needed */ |
639 | #define CIFSSEC_MAY_SIGN 0x00001 | |
640 | #define CIFSSEC_MAY_NTLM 0x00002 | |
641 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
642 | #define CIFSSEC_MAY_KRB5 0x00008 | |
643 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
644 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
645 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
646 | #else |
647 | #define CIFSSEC_MAY_LANMAN 0 | |
648 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
649 | #endif /* weak passwords */ |
650 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 651 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
652 | |
653 | #define CIFSSEC_MUST_SIGN 0x01001 | |
654 | /* note that only one of the following can be set so the | |
655 | result of setting MUST flags more than once will be to | |
656 | require use of the stronger protocol */ | |
657 | #define CIFSSEC_MUST_NTLM 0x02002 | |
658 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
659 | #define CIFSSEC_MUST_KRB5 0x08008 | |
660 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
661 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
662 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 663 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 664 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 665 | #else |
20d1752f | 666 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 667 | #endif /* UPCALL */ |
0d3a01fa JL |
668 | #else /* do not allow weak pw hash */ |
669 | #ifdef CONFIG_CIFS_UPCALL | |
ac683924 | 670 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 671 | #else |
ac683924 | 672 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 673 | #endif /* UPCALL */ |
3979877e SF |
674 | #endif /* WEAK_PW_HASH */ |
675 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 676 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 677 | |
ef571cad SP |
678 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
679 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 680 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
681 | /* |
682 | ***************************************************************** | |
683 | * All constants go here | |
684 | ***************************************************************** | |
685 | */ | |
686 | ||
687 | #define UID_HASH (16) | |
688 | ||
689 | /* | |
690 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
691 | * following to be declared. | |
692 | */ | |
693 | ||
694 | /**************************************************************************** | |
695 | * Locking notes. All updates to global variables and lists should be | |
696 | * protected by spinlocks or semaphores. | |
697 | * | |
698 | * Spinlocks | |
699 | * --------- | |
700 | * GlobalMid_Lock protects: | |
701 | * list operations on pending_mid_q and oplockQ | |
702 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 703 | * cifs_file_list_lock protects: |
1da177e4 LT |
704 | * list operations on tcp and SMB session lists and tCon lists |
705 | * f_owner.lock protects certain per file struct operations | |
706 | * mapping->page_lock protects certain per page operations | |
707 | * | |
708 | * Semaphores | |
709 | * ---------- | |
710 | * sesSem operations on smb session | |
711 | * tconSem operations on tree connection | |
d38d8c74 | 712 | * fh_sem file handle reconnection operations |
1da177e4 LT |
713 | * |
714 | ****************************************************************************/ | |
715 | ||
716 | #ifdef DECLARE_GLOBALS_HERE | |
717 | #define GLOBAL_EXTERN | |
718 | #else | |
719 | #define GLOBAL_EXTERN extern | |
720 | #endif | |
721 | ||
e7ddee90 JL |
722 | /* |
723 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 724 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 725 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 726 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
727 | * by iterating over cifs_tcp_ses_list |
728 | */ | |
729 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
730 | ||
f1987b44 JL |
731 | /* |
732 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
733 | * tcp session, and the list of tcon's per smb session. It also protects | |
734 | * the reference counters for the server, smb session, and tcon. Finally, | |
735 | * changes to the tcon->tidStatus should be done while holding this lock. | |
736 | */ | |
3f9bcca7 | 737 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
738 | |
739 | /* | |
740 | * This lock protects the cifs_file->llist and cifs_file->flist | |
741 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
742 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
743 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
744 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
745 | */ | |
4477288a | 746 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 747 | |
99ee4dbd SF |
748 | /* Outstanding dir notify requests */ |
749 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
750 | /* DirNotify response queue */ | |
751 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
ff5dbd9e | 752 | |
1da177e4 LT |
753 | /* |
754 | * Global transaction id (XID) information | |
755 | */ | |
756 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 757 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 758 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
759 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
760 | /* on midQ entries */ | |
1da177e4 LT |
761 | /* |
762 | * Global counters, updated atomically | |
763 | */ | |
764 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
765 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
766 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
767 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
768 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
769 | ||
aaa9bbe0 | 770 | /* Various Debug counters */ |
4498eed5 SF |
771 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
772 | #ifdef CONFIG_CIFS_STATS2 | |
773 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
774 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
775 | #endif | |
776 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
777 | GLOBAL_EXTERN atomic_t midCount; |
778 | ||
779 | /* Misc globals */ | |
254e55ed | 780 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions |
1da177e4 | 781 | to be established on existing mount if we |
d38d8c74 | 782 | have the uid/password or Kerberos credential |
1da177e4 LT |
783 | or equivalent for current user */ |
784 | GLOBAL_EXTERN unsigned int oplockEnabled; | |
785 | GLOBAL_EXTERN unsigned int experimEnabled; | |
786 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; | |
04912d6a | 787 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 788 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
789 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
790 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
791 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
792 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
793 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
794 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
795 | ||
fda35943 SF |
796 | /* reconnect after this many failed echo attempts */ |
797 | GLOBAL_EXTERN unsigned short echo_retries; | |
798 | ||
9b646972 TH |
799 | void cifs_oplock_break(struct work_struct *work); |
800 | void cifs_oplock_break_get(struct cifsFileInfo *cfile); | |
801 | void cifs_oplock_break_put(struct cifsFileInfo *cfile); | |
3b7433b8 | 802 | |
3bc303c2 | 803 | extern const struct slow_work_ops cifs_oplock_break_ops; |
abd2e44d SJ |
804 | |
805 | #endif /* _CIFS_GLOB_H */ |