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Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / cifs / cifsglob.h
CommitLineData
1da177e4
LT		 1/*
2 * fs/cifs/cifsglob.h
3 *
366781c1 4 * Copyright (C) International Business Machines Corp., 2002,2008
1da177e4 5 * Author(s): Steve French (sfrench@us.ibm.com)
7ee1af76 6 * Jeremy Allison (jra@samba.org)
1da177e4
LT		 7 *
8 * This library is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License as published
10 * by the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU Lesser General Public License for more details.
d38d8c74 17 *
1da177e4
LT		 18 */
19#include <linux/in.h>
20#include <linux/in6.h>
21#include "cifs_fs_sb.h"
442aa310 22#include "cifsacl.h"
1da177e4
LT		 23/*
24 * The sizes of various internal tables and strings
25 */
26#define MAX_UID_INFO 16
27#define MAX_SES_INFO 2
28#define MAX_TCON_INFO 4
29
ef571cad 30#define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1)
1da177e4 31#define MAX_SERVER_SIZE 15
d38d8c74 32#define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */
1da177e4
LT		 33#define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null
34 termination then *2 for unicode versions */
35#define MAX_PASSWORD_SIZE 16
36
37#define CIFS_MIN_RCV_POOL 4
38
39/*
40 * MAX_REQ is the maximum number of requests that WE will send
41 * on one socket concurently. It also matches the most common
d38d8c74 42 * value of max multiplex returned by servers. We may
1da177e4
LT		 43 * eventually want to use the negotiated value (in case
44 * future servers can handle more) when we are more confident that
45 * we will not have problems oveloading the socket with pending
46 * write data.
47 */
d38d8c74 48#define CIFS_MAX_REQ 50
1da177e4 49
8ecaf67a
JL		 50#define RFC1001_NAME_LEN 15
51#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
52
53/* currently length of NIP6_FMT */
54#define SERVER_NAME_LENGTH 40
1da177e4
LT		 55#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
56
57/* used to define string lengths for reversing unicode strings */
58/* (256+1)*2 = 514 */
59/* (max path length + 1 for null) * 2 for unicode */
60#define MAX_NAME 514
61
62#include "cifspdu.h"
63
1da177e4
LT		 64#ifndef XATTR_DOS_ATTRIB
65#define XATTR_DOS_ATTRIB "user.DOSATTRIB"
66#endif
67
1da177e4
LT		 68/*
69 * CIFS vfs client Status information (based on what we know.)
70 */
71
72 /* associated with each tcp and smb session */
73enum statusEnum {
74 CifsNew = 0,
75 CifsGood,
76 CifsExiting,
77 CifsNeedReconnect
78};
79
80enum securityEnum {
a013689d
SF		 81 PLAINTXT = 0, /* Legacy with Plaintext passwords */
82 LANMAN, /* Legacy LANMAN auth */
3979877e 83 NTLM, /* Legacy NTLM012 auth with NTLM hash */
1da177e4
LT		 84 NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */
85 RawNTLMSSP, /* NTLMSSP without SPNEGO */
86 NTLMSSP, /* NTLMSSP via SPNEGO */
c16fefa5
SF		 87 Kerberos, /* Kerberos via SPNEGO */
88 MSKerberos, /* MS Kerberos via SPNEGO */
1da177e4
LT		 89};
90
91enum protocolEnum {
3ec332ef 92 TCP = 0,
1da177e4
LT		 93 SCTP
94 /* Netbios frames protocol not supported at this time */
95};
96
b609f06a
SF		 97struct mac_key {
98 unsigned int len;
99 union {
100 char ntlm[CIFS_SESS_KEY_SIZE + 16];
2442421b 101 char krb5[CIFS_SESS_KEY_SIZE + 16]; /* BB: length correct? */
b609f06a
SF		 102 struct {
103 char key[16];
104 struct ntlmv2_resp resp;
105 } ntlmv2;
106 } data;
107};
108
442aa310
SF		 109struct cifs_cred {
110 int uid;
111 int gid;
112 int mode;
113 int cecount;
114 struct cifs_sid osid;
115 struct cifs_sid gsid;
116 struct cifs_ntace *ntaces;
117 struct cifs_ace *aces;
118};
119
1da177e4
LT		 120/*
121 *****************************************************************
122 * Except the CIFS PDUs themselves all the
123 * globally interesting structs should go here
124 *****************************************************************
125 */
126
127struct TCP_Server_Info {
3b795210
SF		 128 struct list_head tcp_ses_list;
129 struct list_head smb_ses_list;
e7ddee90 130 int srv_count; /* reference counter */
a10faeb2 131 /* 15 character server name + 0x20 16th byte indicating type = srv */
8ecaf67a 132 char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
c359cf3c 133 char *hostname; /* hostname portion of UNC string */
1da177e4
LT		 134 struct socket *ssocket;
135 union {
136 struct sockaddr_in sockAddr;
137 struct sockaddr_in6 sockAddr6;
138 } addr;
d38d8c74 139 wait_queue_head_t response_q;
1da177e4
LT		 140 wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
141 struct list_head pending_mid_q;
142 void *Server_NlsInfo; /* BB - placeholder for future NLS info */
143 unsigned short server_codepage; /* codepage for the server */
131afd0b 144 unsigned long ip_address; /* IP addr for the server if known */
d38d8c74 145 enum protocolEnum protocolType;
1da177e4
LT		 146 char versionMajor;
147 char versionMinor;
4b18f2a9 148 bool svlocal:1; /* local server or remote */
edf1ae40
SF		 149 bool noblocksnd; /* use blocking sendmsg */
150 bool noautotune; /* do not autotune send buf sizes */
1da177e4 151 atomic_t inFlight; /* number of requests on the wire to server */
131afd0b
SF		 152#ifdef CONFIG_CIFS_STATS2
153 atomic_t inSend; /* requests trying to send */
154 atomic_t num_waiters; /* blocked waiting to get in sendrecv */
155#endif
1da177e4 156 enum statusEnum tcpStatus; /* what we think the status is */
72ca545b 157 struct mutex srv_mutex;
1da177e4
LT		 158 struct task_struct *tsk;
159 char server_GUID[16];
160 char secMode;
161 enum securityEnum secType;
162 unsigned int maxReq; /* Clients should submit no more */
163 /* than maxReq distinct unanswered SMBs to the server when using */
164 /* multiplexed reads or writes */
165 unsigned int maxBuf; /* maxBuf specifies the maximum */
166 /* message size the server can send or receive for non-raw SMBs */
eca6acf9 167 unsigned int max_rw; /* maxRw specifies the maximum */
1da177e4
LT		 168 /* message size the server can send or receive for */
169 /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
eca6acf9
SF		 170 unsigned int max_vcs; /* maximum number of smb sessions, at least
171 those that can be specified uniquely with
172 vcnumbers */
1da177e4
LT		 173 char sessid[4]; /* unique token id for this session */
174 /* (returned on Negotiate */
175 int capabilities; /* allow selective disabling of caps by smb sess */
de7ed55d 176 int timeAdj; /* Adjust for difference in server time zone in sec */
1982c344 177 __u16 CurrentMid; /* multiplex id - rotating counter */
1da177e4 178 char cryptKey[CIFS_CRYPTO_KEY_SIZE];
a10faeb2 179 /* 16th byte of RFC1001 workstation name is always null */
8ecaf67a 180 char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
ad009ac9 181 __u32 sequence_number; /* needed for CIFS PDU signature */
b609f06a
SF		 182 struct mac_key mac_signing_key;
183 char ntlmv2_hash[16];
3a5ff61c 184 unsigned long lstrp; /* when we got last response from this server */
1da177e4
LT		 185};
186
187/*
188 * The following is our shortcut to user information. We surface the uid,
189 * and name. We always get the password on the fly in case it
d38d8c74 190 * has changed. We also hang a list of sessions owned by this user off here.
1da177e4
LT		 191 */
192struct cifsUidInfo {
193 struct list_head userList;
194 struct list_head sessionList; /* SMB sessions for this user */
195 uid_t linux_uid;
196 char user[MAX_USERNAME_SIZE + 1]; /* ascii name of user */
197 /* BB may need ptr or callback for PAM or WinBind info */
198};
199
200/*
201 * Session structure. One of these for each uid session with a particular host
202 */
203struct cifsSesInfo {
14fbf50d 204 struct list_head smb_ses_list;
3b795210 205 struct list_head tcon_list;
1da177e4 206 struct semaphore sesSem;
3979877e 207#if 0
1da177e4 208 struct cifsUidInfo *uidInfo; /* pointer to user info */
3979877e 209#endif
1da177e4 210 struct TCP_Server_Info *server; /* pointer to server info */
14fbf50d 211 int ses_count; /* reference counter */
1da177e4 212 enum statusEnum status;
750d1151 213 unsigned overrideSecFlg; /* if non-zero override global sec flags */
1da177e4
LT		 214 __u16 ipc_tid; /* special tid for connection to IPC share */
215 __u16 flags;
eca6acf9 216 __u16 vcnum;
ad009ac9
SF		 217 char *serverOS; /* name of operating system underlying server */
218 char *serverNOS; /* name of network operating system of server */
1da177e4
LT		 219 char *serverDomain; /* security realm of server */
220 int Suid; /* remote smb uid */
221 uid_t linux_uid; /* local Linux uid */
222 int capabilities;
d38d8c74 223 char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
ad009ac9 224 TCP names - will ipv6 and sctp addresses fit? */
1da177e4 225 char userName[MAX_USERNAME_SIZE + 1];
d38d8c74
SF		 226 char *domainName;
227 char *password;
3b795210 228 bool need_reconnect:1; /* connection reset, uid now invalid */
1da177e4 229};
9ac00b7d 230/* no more than one of the following three session flags may be set */
1da177e4 231#define CIFS_SES_NT4 1
9ac00b7d
SF		 232#define CIFS_SES_OS2 2
233#define CIFS_SES_W9X 4
234/* following flag is set for old servers such as OS2 (and Win95?)
235 which do not negotiate NTLM or POSIX dialects, but instead
236 negotiate one of the older LANMAN dialects */
237#define CIFS_SES_LANMAN 8
1da177e4
LT		 238/*
239 * there is one of these for each connection to a resource on a particular
d38d8c74 240 * session
1da177e4
LT		 241 */
242struct cifsTconInfo {
f1987b44
JL		 243 struct list_head tcon_list;
244 int tc_count;
1da177e4 245 struct list_head openFileList;
1da177e4 246 struct cifsSesInfo *ses; /* pointer to session associated with */
254e55ed 247 char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
1da177e4 248 char *nativeFileSystem;
00e485b0 249 char *password; /* for share-level security */
1da177e4
LT		 250 __u16 tid; /* The 2 byte tree id */
251 __u16 Flags; /* optional support bits */
252 enum statusEnum tidStatus;
1da177e4
LT		 253#ifdef CONFIG_CIFS_STATS
254 atomic_t num_smbs_sent;
255 atomic_t num_writes;
256 atomic_t num_reads;
257 atomic_t num_oplock_brks;
258 atomic_t num_opens;
a5a2b489 259 atomic_t num_closes;
1da177e4
LT		 260 atomic_t num_deletes;
261 atomic_t num_mkdirs;
262 atomic_t num_rmdirs;
263 atomic_t num_renames;
264 atomic_t num_t2renames;
dfb7533b
SF		 265 atomic_t num_ffirst;
266 atomic_t num_fnext;
267 atomic_t num_fclose;
a5a2b489
SF		 268 atomic_t num_hardlinks;
269 atomic_t num_symlinks;
270 atomic_t num_locks;
0a4b92c0
SF		 271 atomic_t num_acl_get;
272 atomic_t num_acl_set;
a5a2b489
SF		 273#ifdef CONFIG_CIFS_STATS2
274 unsigned long long time_writes;
275 unsigned long long time_reads;
276 unsigned long long time_opens;
277 unsigned long long time_deletes;
278 unsigned long long time_closes;
279 unsigned long long time_mkdirs;
280 unsigned long long time_rmdirs;
281 unsigned long long time_renames;
282 unsigned long long time_t2renames;
283 unsigned long long time_ffirst;
284 unsigned long long time_fnext;
285 unsigned long long time_fclose;
286#endif /* CONFIG_CIFS_STATS2 */
1da177e4
LT		 287 __u64 bytes_read;
288 __u64 bytes_written;
289 spinlock_t stat_lock;
a5a2b489 290#endif /* CONFIG_CIFS_STATS */
1da177e4 291 FILE_SYSTEM_DEVICE_INFO fsDevInfo;
254e55ed 292 FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
1da177e4 293 FILE_SYSTEM_UNIX_INFO fsUnixInfo;
4b18f2a9
SF		 294 bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */
295 bool retry:1;
296 bool nocase:1;
95b1cb90 297 bool seal:1; /* transport encryption for this mounted share */
4b18f2a9 298 bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
c18c842b 299 for this mount even if server would support */
84210e91 300 bool local_lease:1; /* check leases (only) on local system not remote */
3b795210 301 bool need_reconnect:1; /* connection reset, tid now invalid */
c18c842b 302 /* BB add field for back pointer to sb struct(s)? */
1da177e4
LT		 303};
304
305/*
7ee1af76
JA		 306 * This info hangs off the cifsFileInfo structure, pointed to by llist.
307 * This is used to track byte stream locks on the file
1da177e4
LT		 308 */
309struct cifsLockInfo {
7ee1af76
JA		 310 struct list_head llist; /* pointer to next cifsLockInfo */
311 __u64 offset;
312 __u64 length;
313 __u8 type;
1da177e4
LT		 314};
315
316/*
317 * One of these for each open instance of a file
318 */
319struct cifs_search_info {
320 loff_t index_of_last_entry;
321 __u16 entries_in_buffer;
322 __u16 info_level;
323 __u32 resume_key;
d38d8c74
SF		 324 char *ntwrk_buf_start;
325 char *srch_entries_start;
0752f152 326 char *last_entry;
d38d8c74 327 char *presume_name;
1da177e4 328 unsigned int resume_name_len;
4b18f2a9
SF		 329 bool endOfSearch:1;
330 bool emptyDir:1;
331 bool unicode:1;
332 bool smallBuf:1; /* so we know which buf_release function to call */
1da177e4
LT		 333};
334
335struct cifsFileInfo {
336 struct list_head tlist; /* pointer to next fid owned by tcon */
337 struct list_head flist; /* next fid (file instance) for this inode */
338 unsigned int uid; /* allows finding which FileInfo structure */
339 __u32 pid; /* process id who opened file */
340 __u16 netfid; /* file id from remote */
341 /* BB add lock scope info here if needed */ ;
342 /* lock scope id (0 if none) */
d38d8c74
SF		 343 struct file *pfile; /* needed for writepage */
344 struct inode *pInode; /* needed for oplock break */
796e5661 345 struct mutex lock_mutex;
7ee1af76 346 struct list_head llist; /* list of byte range locks we have. */
4b18f2a9
SF		 347 bool closePend:1; /* file is marked to close */
348 bool invalidHandle:1; /* file closed via session abend */
349 bool messageMode:1; /* for pipes: message vs byte mode */
23e7dd7d 350 atomic_t wrtPending; /* handle in use - defer close */
1da177e4 351 struct semaphore fh_sem; /* prevents reopen race after dead ses*/
1da177e4
LT		 352 struct cifs_search_info srch_inf;
353};
354
355/*
356 * One of these for each file inode
357 */
358
359struct cifsInodeInfo {
360 struct list_head lockList;
d38d8c74 361 /* BB add in lists for dirty pages i.e. write caching info for oplock */
1da177e4
LT		 362 struct list_head openFileList;
363 int write_behind_rc;
364 __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
365 atomic_t inUse; /* num concurrent users (local openers cifs) of file*/
366 unsigned long time; /* jiffies of last update/check of inode */
4b18f2a9
SF		 367 bool clientCanCacheRead:1; /* read oplock */
368 bool clientCanCacheAll:1; /* read and writebehind oplock */
369 bool oplockPending:1;
9a8165fc 370 bool delete_pending:1; /* DELETE_ON_CLOSE is set */
1da177e4
LT		 371 struct inode vfs_inode;
372};
373
374static inline struct cifsInodeInfo *
375CIFS_I(struct inode *inode)
376{
377 return container_of(inode, struct cifsInodeInfo, vfs_inode);
378}
379
380static inline struct cifs_sb_info *
381CIFS_SB(struct super_block *sb)
382{
383 return sb->s_fs_info;
384}
385
ab2f218f 386static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
ac67055e
JA		 387{
388 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
389 return '/';
390 else
391 return '\\';
392}
1da177e4 393
a4544347
SF		 394#ifdef CONFIG_CIFS_STATS
395#define cifs_stats_inc atomic_inc
396
397static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon,
398 unsigned int bytes)
399{
400 if (bytes) {
401 spin_lock(&tcon->stat_lock);
402 tcon->bytes_written += bytes;
403 spin_unlock(&tcon->stat_lock);
404 }
405}
406
407static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon,
408 unsigned int bytes)
409{
410 spin_lock(&tcon->stat_lock);
411 tcon->bytes_read += bytes;
412 spin_unlock(&tcon->stat_lock);
413}
414#else
415
d38d8c74
SF		 416#define cifs_stats_inc(field) do {} while (0)
417#define cifs_stats_bytes_written(tcon, bytes) do {} while (0)
418#define cifs_stats_bytes_read(tcon, bytes) do {} while (0)
a4544347
SF		 419
420#endif
421
1da177e4
LT		 422/* one of these for every pending CIFS request to the server */
423struct mid_q_entry {
424 struct list_head qhead; /* mids waiting on reply from this server */
425 __u16 mid; /* multiplex id */
426 __u16 pid; /* process id */
427 __u32 sequence_number; /* for CIFS signing */
1047abc1
SF		 428 unsigned long when_alloc; /* when mid was created */
429#ifdef CONFIG_CIFS_STATS2
430 unsigned long when_sent; /* time when smb send finished */
431 unsigned long when_received; /* when demux complete (taken off wire) */
432#endif
1da177e4
LT		 433 struct task_struct *tsk; /* task waiting for response */
434 struct smb_hdr *resp_buf; /* response buffer */
435 int midState; /* wish this were enum but can not pass to wait_event */
c81156dd 436 __u8 command; /* smb command code */
4b18f2a9
SF		 437 bool largeBuf:1; /* if valid response, is pointer to large buf */
438 bool multiRsp:1; /* multiple trans2 responses for one request */
439 bool multiEnd:1; /* both received */
1da177e4
LT		 440};
441
442struct oplock_q_entry {
443 struct list_head qhead;
d38d8c74
SF		 444 struct inode *pinode;
445 struct cifsTconInfo *tcon;
1da177e4
LT		 446 __u16 netfid;
447};
448
ff5dbd9e
SF		 449/* for pending dnotify requests */
450struct dir_notify_req {
451 struct list_head lhead;
452 __le16 Pid;
453 __le16 PidHigh;
454 __u16 Mid;
455 __u16 Tid;
456 __u16 Uid;
457 __u16 netfid;
458 __u32 filter; /* CompletionFilter (for multishot) */
459 int multishot;
d38d8c74 460 struct file *pfile;
ff5dbd9e
SF		 461};
462
366781c1
SF		 463struct dfs_info3_param {
464 int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/
8aad018b 465 int path_consumed;
366781c1
SF		 466 int server_type;
467 int ref_flag;
468 char *path_name;
469 char *node_name;
470};
471
472static inline void free_dfs_info_param(struct dfs_info3_param *param)
473{
474 if (param) {
475 kfree(param->path_name);
476 kfree(param->node_name);
477 kfree(param);
478 }
479}
480
481static inline void free_dfs_info_array(struct dfs_info3_param *param,
482 int number_of_items)
483{
484 int i;
485 if ((number_of_items == 0) || (param == NULL))
486 return;
487 for (i = 0; i < number_of_items; i++) {
488 kfree(param[i].path_name);
489 kfree(param[i].node_name);
490 }
491 kfree(param);
492}
493
1da177e4
LT		 494#define MID_FREE 0
495#define MID_REQUEST_ALLOCATED 1
496#define MID_REQUEST_SUBMITTED 2
497#define MID_RESPONSE_RECEIVED 4
498#define MID_RETRY_NEEDED 8 /* session closed while this request out */
499#define MID_NO_RESP_NEEDED 0x10
ec637e3f
SF		 500
501/* Types of response buffer returned from SendReceive2 */
502#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
503#define CIFS_SMALL_BUFFER 1
504#define CIFS_LARGE_BUFFER 2
505#define CIFS_IOVEC 4 /* array of response buffers */
1da177e4 506
133672ef
SF		 507/* Type of Request to SendReceive2 */
508#define CIFS_STD_OP 0 /* normal request timeout */
509#define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */
510#define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */
511#define CIFS_BLOCKING_OP 4 /* operation can block */
512#define CIFS_ASYNC_OP 8 /* do not wait for response */
513#define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */
514#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */
515#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */
516#define CIFS_NO_RESP 0x040 /* no response buffer required */
517
3979877e
SF		 518/* Security Flags: indicate type of session setup needed */
519#define CIFSSEC_MAY_SIGN 0x00001
520#define CIFSSEC_MAY_NTLM 0x00002
521#define CIFSSEC_MAY_NTLMV2 0x00004
522#define CIFSSEC_MAY_KRB5 0x00008
523#ifdef CONFIG_CIFS_WEAK_PW_HASH
524#define CIFSSEC_MAY_LANMAN 0x00010
525#define CIFSSEC_MAY_PLNTXT 0x00020
516897a2
SF		 526#else
527#define CIFSSEC_MAY_LANMAN 0
528#define CIFSSEC_MAY_PLNTXT 0
3979877e
SF		 529#endif /* weak passwords */
530#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */
531
532#define CIFSSEC_MUST_SIGN 0x01001
533/* note that only one of the following can be set so the
534result of setting MUST flags more than once will be to
535require use of the stronger protocol */
536#define CIFSSEC_MUST_NTLM 0x02002
537#define CIFSSEC_MUST_NTLMV2 0x04004
538#define CIFSSEC_MUST_KRB5 0x08008
539#ifdef CONFIG_CIFS_WEAK_PW_HASH
540#define CIFSSEC_MUST_LANMAN 0x10010
541#define CIFSSEC_MUST_PLNTXT 0x20020
0d3a01fa
JL		 542#ifdef CONFIG_CIFS_UPCALL
543#define CIFSSEC_MASK 0x3F03F /* allows weak security but also krb5 */
544#else
3979877e 545#define CIFSSEC_MASK 0x37037 /* current flags supported if weak */
016ec75f 546#endif /* UPCALL */
0d3a01fa
JL		 547#else /* do not allow weak pw hash */
548#ifdef CONFIG_CIFS_UPCALL
549#define CIFSSEC_MASK 0x0F00F /* flags supported if no weak allowed */
d38d8c74 550#else
0d3a01fa 551#define CIFSSEC_MASK 0x07007 /* flags supported if no weak allowed */
016ec75f 552#endif /* UPCALL */
3979877e
SF		 553#endif /* WEAK_PW_HASH */
554#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */
555
ef571cad
SP		 556#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2)
557#define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
a013689d 558#define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5)
1da177e4
LT		 559/*
560 *****************************************************************
561 * All constants go here
562 *****************************************************************
563 */
564
565#define UID_HASH (16)
566
567/*
568 * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the
569 * following to be declared.
570 */
571
572/****************************************************************************
573 * Locking notes. All updates to global variables and lists should be
574 * protected by spinlocks or semaphores.
575 *
576 * Spinlocks
577 * ---------
578 * GlobalMid_Lock protects:
579 * list operations on pending_mid_q and oplockQ
580 * updates to XID counters, multiplex id and SMB sequence numbers
581 * GlobalSMBSesLock protects:
582 * list operations on tcp and SMB session lists and tCon lists
583 * f_owner.lock protects certain per file struct operations
584 * mapping->page_lock protects certain per page operations
585 *
586 * Semaphores
587 * ----------
588 * sesSem operations on smb session
589 * tconSem operations on tree connection
d38d8c74 590 * fh_sem file handle reconnection operations
1da177e4
LT		 591 *
592 ****************************************************************************/
593
594#ifdef DECLARE_GLOBALS_HERE
595#define GLOBAL_EXTERN
596#else
597#define GLOBAL_EXTERN extern
598#endif
599
e7ddee90
JL		 600/*
601 * the list of TCP_Server_Info structures, ie each of the sockets
fb396016 602 * connecting our client to a distinct server (ip address), is
e7ddee90 603 * chained together by cifs_tcp_ses_list. The list of all our SMB
fb396016 604 * sessions (and from that the tree connections) can be found
e7ddee90
JL		 605 * by iterating over cifs_tcp_ses_list
606 */
607GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
608
f1987b44
JL		 609/*
610 * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
611 * tcp session, and the list of tcon's per smb session. It also protects
612 * the reference counters for the server, smb session, and tcon. Finally,
613 * changes to the tcon->tidStatus should be done while holding this lock.
614 */
e7ddee90 615GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock;
ddb4cbfc
SF		 616
617/*
618 * This lock protects the cifs_file->llist and cifs_file->flist
619 * list operations, and updates to some flags (cifs_file->invalidHandle)
620 * It will be moved to either use the tcon->stat_lock or equivalent later.
621 * If cifs_tcp_ses_lock and the lock below are both needed to be held, then
622 * the cifs_tcp_ses_lock must be grabbed first and released last.
623 */
624GLOBAL_EXTERN rwlock_t GlobalSMBSeslock;
1da177e4
LT		 625
626GLOBAL_EXTERN struct list_head GlobalOplock_Q;
627
99ee4dbd
SF		 628/* Outstanding dir notify requests */
629GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
630/* DirNotify response queue */
631GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
ff5dbd9e 632
1da177e4
LT		 633/*
634 * Global transaction id (XID) information
635 */
636GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */
254e55ed 637GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
1da177e4 638GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */
254e55ed
SF		 639GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */
640 /* on midQ entries */
1da177e4
LT		 641GLOBAL_EXTERN char Local_System_Name[15];
642
643/*
644 * Global counters, updated atomically
645 */
646GLOBAL_EXTERN atomic_t sesInfoAllocCount;
647GLOBAL_EXTERN atomic_t tconInfoAllocCount;
648GLOBAL_EXTERN atomic_t tcpSesAllocCount;
649GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
650GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
651
aaa9bbe0 652/* Various Debug counters */
4498eed5
SF		 653GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
654#ifdef CONFIG_CIFS_STATS2
655GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
656GLOBAL_EXTERN atomic_t totSmBufAllocCount;
657#endif
658GLOBAL_EXTERN atomic_t smBufAllocCount;
1da177e4
LT		 659GLOBAL_EXTERN atomic_t midCount;
660
661/* Misc globals */
254e55ed 662GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions
1da177e4 663 to be established on existing mount if we
d38d8c74 664 have the uid/password or Kerberos credential
1da177e4
LT		 665 or equivalent for current user */
666GLOBAL_EXTERN unsigned int oplockEnabled;
667GLOBAL_EXTERN unsigned int experimEnabled;
668GLOBAL_EXTERN unsigned int lookupCacheEnabled;
d38d8c74 669GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent
1da177e4 670 with more secure ntlmssp2 challenge/resp */
1da177e4
LT		 671GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
672GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
673GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */
674GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
675GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */
676GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
677
kernel source for telekom puls (alcatel/mediatek)