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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 |
2e325d59 | 40 | #define MAX_SHARE_SIZE 80 |
8727c8a8 SF |
41 | #define MAX_USERNAME_SIZE 256 /* reasonable maximum for current servers */ |
42 | #define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ | |
1da177e4 LT |
43 | |
44 | #define CIFS_MIN_RCV_POOL 4 | |
45 | ||
6d20e840 SJ |
46 | /* |
47 | * default attribute cache timeout (jiffies) | |
48 | */ | |
49 | #define CIFS_DEF_ACTIMEO (1 * HZ) | |
50 | ||
51 | /* | |
52 | * max attribute cache timeout (jiffies) - 2^30 | |
53 | */ | |
54 | #define CIFS_MAX_ACTIMEO (1 << 30) | |
55 | ||
1da177e4 LT |
56 | /* |
57 | * MAX_REQ is the maximum number of requests that WE will send | |
10b9b98e | 58 | * on one socket concurrently. |
1da177e4 | 59 | */ |
10b9b98e | 60 | #define CIFS_MAX_REQ 32767 |
1da177e4 | 61 | |
8ecaf67a JL |
62 | #define RFC1001_NAME_LEN 15 |
63 | #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) | |
64 | ||
65 | /* currently length of NIP6_FMT */ | |
66 | #define SERVER_NAME_LENGTH 40 | |
1da177e4 LT |
67 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
68 | ||
69 | /* used to define string lengths for reversing unicode strings */ | |
70 | /* (256+1)*2 = 514 */ | |
71 | /* (max path length + 1 for null) * 2 for unicode */ | |
72 | #define MAX_NAME 514 | |
73 | ||
74 | #include "cifspdu.h" | |
75 | ||
1da177e4 LT |
76 | #ifndef XATTR_DOS_ATTRIB |
77 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" | |
78 | #endif | |
79 | ||
1da177e4 LT |
80 | /* |
81 | * CIFS vfs client Status information (based on what we know.) | |
82 | */ | |
83 | ||
6c0f6218 | 84 | /* associated with each tcp and smb session */ |
1da177e4 LT |
85 | enum statusEnum { |
86 | CifsNew = 0, | |
87 | CifsGood, | |
88 | CifsExiting, | |
fd88ce93 SF |
89 | CifsNeedReconnect, |
90 | CifsNeedNegotiate | |
1da177e4 LT |
91 | }; |
92 | ||
93 | enum securityEnum { | |
daf5b0b6 | 94 | LANMAN = 0, /* Legacy LANMAN auth */ |
3979877e | 95 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
1da177e4 | 96 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
ac683924 | 97 | RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ |
f46c7234 | 98 | /* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */ |
c16fefa5 | 99 | Kerberos, /* Kerberos via SPNEGO */ |
1da177e4 LT |
100 | }; |
101 | ||
102 | enum protocolEnum { | |
3ec332ef | 103 | TCP = 0, |
1da177e4 LT |
104 | SCTP |
105 | /* Netbios frames protocol not supported at this time */ | |
106 | }; | |
107 | ||
5f98ca9a | 108 | struct session_key { |
b609f06a | 109 | unsigned int len; |
21e73393 | 110 | char *response; |
b609f06a SF |
111 | }; |
112 | ||
d2b91521 SP |
113 | /* crypto security descriptor definition */ |
114 | struct sdesc { | |
115 | struct shash_desc shash; | |
116 | char ctx[]; | |
117 | }; | |
118 | ||
f7c5445a | 119 | /* crypto hashing related structure/fields, not specific to a sec mech */ |
d2b91521 SP |
120 | struct cifs_secmech { |
121 | struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ | |
122 | struct crypto_shash *md5; /* md5 hash function */ | |
123 | struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ | |
124 | struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ | |
125 | }; | |
126 | ||
d3686d54 | 127 | /* per smb session structure/fields */ |
d2b91521 SP |
128 | struct ntlmssp_auth { |
129 | __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */ | |
130 | __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */ | |
131 | unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */ | |
d3686d54 | 132 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */ |
d2b91521 SP |
133 | }; |
134 | ||
442aa310 SF |
135 | struct cifs_cred { |
136 | int uid; | |
137 | int gid; | |
138 | int mode; | |
139 | int cecount; | |
140 | struct cifs_sid osid; | |
141 | struct cifs_sid gsid; | |
142 | struct cifs_ntace *ntaces; | |
143 | struct cifs_ace *aces; | |
144 | }; | |
145 | ||
1da177e4 LT |
146 | /* |
147 | ***************************************************************** | |
148 | * Except the CIFS PDUs themselves all the | |
149 | * globally interesting structs should go here | |
150 | ***************************************************************** | |
151 | */ | |
152 | ||
23db65f5 JL |
153 | enum smb_version { |
154 | Smb_1 = 1, | |
155 | }; | |
156 | ||
121b046a JL |
157 | struct mid_q_entry; |
158 | struct TCP_Server_Info; | |
159 | ||
23db65f5 | 160 | struct smb_version_operations { |
121b046a JL |
161 | int (*send_cancel)(struct TCP_Server_Info *, void *, |
162 | struct mid_q_entry *); | |
23db65f5 JL |
163 | }; |
164 | ||
165 | struct smb_version_values { | |
166 | char *version_string; | |
167 | }; | |
168 | ||
f87d39d9 SF |
169 | struct smb_vol { |
170 | char *username; | |
171 | char *password; | |
172 | char *domainname; | |
173 | char *UNC; | |
174 | char *UNCip; | |
175 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
176 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ | |
177 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ | |
178 | uid_t cred_uid; | |
179 | uid_t linux_uid; | |
180 | gid_t linux_gid; | |
3d3ea8e6 SP |
181 | uid_t backupuid; |
182 | gid_t backupgid; | |
5206efd6 AV |
183 | umode_t file_mode; |
184 | umode_t dir_mode; | |
f87d39d9 SF |
185 | unsigned secFlg; |
186 | bool retry:1; | |
187 | bool intr:1; | |
188 | bool setuids:1; | |
189 | bool override_uid:1; | |
190 | bool override_gid:1; | |
191 | bool dynperm:1; | |
192 | bool noperm:1; | |
193 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
194 | bool cifs_acl:1; | |
3d3ea8e6 SP |
195 | bool backupuid_specified; /* mount option backupuid is specified */ |
196 | bool backupgid_specified; /* mount option backupgid is specified */ | |
f87d39d9 SF |
197 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
198 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
199 | bool direct_io:1; | |
200 | bool strict_io:1; /* strict cache behavior */ | |
201 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
202 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
203 | bool no_linux_ext:1; | |
204 | bool sfu_emul:1; | |
205 | bool nullauth:1; /* attempt to authenticate with null user */ | |
206 | bool nocase:1; /* request case insensitive filenames */ | |
207 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
208 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ | |
209 | bool seal:1; /* request transport encryption on share */ | |
210 | bool nodfs:1; /* Do not request DFS, even if available */ | |
211 | bool local_lease:1; /* check leases only on local system, not remote */ | |
212 | bool noblocksnd:1; | |
213 | bool noautotune:1; | |
214 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ | |
215 | bool fsc:1; /* enable fscache */ | |
216 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ | |
217 | bool multiuser:1; | |
d4ffff1f | 218 | bool rwpidforward:1; /* pid forward for read/write operations */ |
f87d39d9 SF |
219 | unsigned int rsize; |
220 | unsigned int wsize; | |
221 | bool sockopt_tcp_nodelay:1; | |
222 | unsigned short int port; | |
223 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ | |
23db65f5 JL |
224 | struct smb_version_operations *ops; |
225 | struct smb_version_values *vals; | |
f87d39d9 SF |
226 | char *prepath; |
227 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ | |
228 | struct nls_table *local_nls; | |
229 | }; | |
230 | ||
25c7f41e PS |
231 | #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \ |
232 | CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \ | |
233 | CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \ | |
234 | CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \ | |
235 | CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \ | |
236 | CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \ | |
237 | CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \ | |
238 | CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \ | |
3d3ea8e6 SP |
239 | CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ |
240 | CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID) | |
25c7f41e PS |
241 | |
242 | #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \ | |
243 | MS_NODEV | MS_SYNCHRONOUS) | |
244 | ||
245 | struct cifs_mnt_data { | |
246 | struct cifs_sb_info *cifs_sb; | |
247 | struct smb_vol *vol; | |
248 | int flags; | |
249 | }; | |
250 | ||
792af7b0 PS |
251 | static inline unsigned int |
252 | get_rfc1002_length(void *buf) | |
253 | { | |
254 | return be32_to_cpu(*((__be32 *)buf)); | |
255 | } | |
256 | ||
1da177e4 | 257 | struct TCP_Server_Info { |
3b795210 SF |
258 | struct list_head tcp_ses_list; |
259 | struct list_head smb_ses_list; | |
e7ddee90 | 260 | int srv_count; /* reference counter */ |
a10faeb2 | 261 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
8ecaf67a | 262 | char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
23db65f5 JL |
263 | struct smb_version_operations *ops; |
264 | struct smb_version_values *vals; | |
c3dccf48 | 265 | enum statusEnum tcpStatus; /* what we think the status is */ |
c359cf3c | 266 | char *hostname; /* hostname portion of UNC string */ |
1da177e4 | 267 | struct socket *ssocket; |
a9f1b85e | 268 | struct sockaddr_storage dstaddr; |
3eb9a889 | 269 | struct sockaddr_storage srcaddr; /* locally bind to this IP */ |
f1d0c998 RL |
270 | #ifdef CONFIG_NET_NS |
271 | struct net *net; | |
272 | #endif | |
d38d8c74 | 273 | wait_queue_head_t response_q; |
1da177e4 LT |
274 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
275 | struct list_head pending_mid_q; | |
edf1ae40 SF |
276 | bool noblocksnd; /* use blocking sendmsg */ |
277 | bool noautotune; /* do not autotune send buf sizes */ | |
6a5fa236 | 278 | bool tcp_nodelay; |
2d86dbc9 | 279 | int credits; /* send no more requests at once */ |
fc40f9cf | 280 | unsigned int in_flight; /* number of requests on the wire to server */ |
2d86dbc9 | 281 | spinlock_t req_lock; /* protect the two values above */ |
72ca545b | 282 | struct mutex srv_mutex; |
1da177e4 LT |
283 | struct task_struct *tsk; |
284 | char server_GUID[16]; | |
96daf2b0 | 285 | char sec_mode; |
c3dccf48 JL |
286 | bool session_estab; /* mark when very first sess is established */ |
287 | u16 dialect; /* dialect index that server chose */ | |
1da177e4 | 288 | enum securityEnum secType; |
10b9b98e | 289 | bool oplocks:1; /* enable oplocks */ |
1da177e4 LT |
290 | unsigned int maxReq; /* Clients should submit no more */ |
291 | /* than maxReq distinct unanswered SMBs to the server when using */ | |
292 | /* multiplexed reads or writes */ | |
293 | unsigned int maxBuf; /* maxBuf specifies the maximum */ | |
294 | /* message size the server can send or receive for non-raw SMBs */ | |
7e90d705 SF |
295 | /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */ |
296 | /* when socket is setup (and during reconnect) before NegProt sent */ | |
eca6acf9 | 297 | unsigned int max_rw; /* maxRw specifies the maximum */ |
1da177e4 LT |
298 | /* message size the server can send or receive for */ |
299 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ | |
eca6acf9 SF |
300 | unsigned int max_vcs; /* maximum number of smb sessions, at least |
301 | those that can be specified uniquely with | |
302 | vcnumbers */ | |
1da177e4 | 303 | int capabilities; /* allow selective disabling of caps by smb sess */ |
de7ed55d | 304 | int timeAdj; /* Adjust for difference in server time zone in sec */ |
243d04b6 | 305 | __u64 CurrentMid; /* multiplex id - rotating counter */ |
d3ba50b1 | 306 | char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ |
a10faeb2 | 307 | /* 16th byte of RFC1001 workstation name is always null */ |
8ecaf67a | 308 | char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; |
a0f8b4fb | 309 | __u32 sequence_number; /* for signing, protected by srv_mutex */ |
5f98ca9a | 310 | struct session_key session_key; |
3a5ff61c | 311 | unsigned long lstrp; /* when we got last response from this server */ |
d2b91521 | 312 | struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */ |
26efa0ba | 313 | /* extended security flavors that server supports */ |
c3dccf48 JL |
314 | bool sec_ntlmssp; /* supports NTLMSSP */ |
315 | bool sec_kerberosu2u; /* supports U2U Kerberos */ | |
26efa0ba JL |
316 | bool sec_kerberos; /* supports plain Kerberos */ |
317 | bool sec_mskerberos; /* supports legacy MS Kerberos */ | |
2a37ef94 | 318 | bool large_buf; /* is current buffer large? */ |
c74093b6 | 319 | struct delayed_work echo; /* echo ping workqueue job */ |
1041e3f9 JL |
320 | struct kvec *iov; /* reusable kvec array for receives */ |
321 | unsigned int nr_iov; /* number of kvecs in array */ | |
2a37ef94 JL |
322 | char *smallbuf; /* pointer to current "small" buffer */ |
323 | char *bigbuf; /* pointer to current "big" buffer */ | |
324 | unsigned int total_read; /* total amount of data read in this pass */ | |
488f1d2d SJ |
325 | #ifdef CONFIG_CIFS_FSCACHE |
326 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
327 | #endif | |
c3dccf48 | 328 | #ifdef CONFIG_CIFS_STATS2 |
789e6661 | 329 | atomic_t in_send; /* requests trying to send */ |
c3dccf48 JL |
330 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
331 | #endif | |
1da177e4 LT |
332 | }; |
333 | ||
fc40f9cf PS |
334 | static inline unsigned int |
335 | in_flight(struct TCP_Server_Info *server) | |
336 | { | |
337 | unsigned int num; | |
338 | spin_lock(&server->req_lock); | |
339 | num = server->in_flight; | |
340 | spin_unlock(&server->req_lock); | |
341 | return num; | |
342 | } | |
343 | ||
bc205ed1 PS |
344 | static inline int* |
345 | get_credits_field(struct TCP_Server_Info *server) | |
346 | { | |
347 | /* | |
348 | * This will change to switch statement when we reserve slots for echos | |
349 | * and oplock breaks. | |
350 | */ | |
351 | return &server->credits; | |
352 | } | |
353 | ||
2d86dbc9 | 354 | static inline bool |
bc205ed1 | 355 | has_credits(struct TCP_Server_Info *server, int *credits) |
fc40f9cf | 356 | { |
2d86dbc9 | 357 | int num; |
fc40f9cf | 358 | spin_lock(&server->req_lock); |
bc205ed1 | 359 | num = *credits; |
fc40f9cf | 360 | spin_unlock(&server->req_lock); |
2d86dbc9 | 361 | return num > 0; |
fc40f9cf PS |
362 | } |
363 | ||
5ffef7bf PS |
364 | static inline size_t |
365 | header_size(void) | |
366 | { | |
367 | return sizeof(struct smb_hdr); | |
368 | } | |
369 | ||
370 | static inline size_t | |
371 | max_header_size(void) | |
372 | { | |
373 | return MAX_CIFS_HDR_SIZE; | |
374 | } | |
375 | ||
f1d0c998 RL |
376 | /* |
377 | * Macros to allow the TCP_Server_Info->net field and related code to drop out | |
378 | * when CONFIG_NET_NS isn't set. | |
379 | */ | |
380 | ||
381 | #ifdef CONFIG_NET_NS | |
382 | ||
383 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
384 | { | |
385 | return srv->net; | |
386 | } | |
387 | ||
388 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
389 | { | |
390 | srv->net = net; | |
391 | } | |
392 | ||
393 | #else | |
394 | ||
395 | static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv) | |
396 | { | |
397 | return &init_net; | |
398 | } | |
399 | ||
400 | static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net) | |
401 | { | |
402 | } | |
403 | ||
404 | #endif | |
405 | ||
1da177e4 LT |
406 | /* |
407 | * Session structure. One of these for each uid session with a particular host | |
408 | */ | |
96daf2b0 | 409 | struct cifs_ses { |
14fbf50d | 410 | struct list_head smb_ses_list; |
3b795210 | 411 | struct list_head tcon_list; |
d7b619cf | 412 | struct mutex session_mutex; |
1da177e4 | 413 | struct TCP_Server_Info *server; /* pointer to server info */ |
14fbf50d | 414 | int ses_count; /* reference counter */ |
1da177e4 | 415 | enum statusEnum status; |
750d1151 | 416 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
1da177e4 LT |
417 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
418 | __u16 flags; | |
eca6acf9 | 419 | __u16 vcnum; |
ad009ac9 SF |
420 | char *serverOS; /* name of operating system underlying server */ |
421 | char *serverNOS; /* name of network operating system of server */ | |
1da177e4 LT |
422 | char *serverDomain; /* security realm of server */ |
423 | int Suid; /* remote smb uid */ | |
3e4b3e1f JL |
424 | uid_t linux_uid; /* overriding owner of files on the mount */ |
425 | uid_t cred_uid; /* owner of credentials */ | |
1da177e4 | 426 | int capabilities; |
d38d8c74 | 427 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
ad009ac9 | 428 | TCP names - will ipv6 and sctp addresses fit? */ |
34c87901 SF |
429 | char *user_name; /* must not be null except during init of sess |
430 | and after mount option parsing we fill it */ | |
d38d8c74 SF |
431 | char *domainName; |
432 | char *password; | |
5d0d2882 | 433 | struct session_key auth_key; |
d3686d54 | 434 | struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */ |
3b795210 | 435 | bool need_reconnect:1; /* connection reset, uid now invalid */ |
1da177e4 | 436 | }; |
9ac00b7d | 437 | /* no more than one of the following three session flags may be set */ |
1da177e4 | 438 | #define CIFS_SES_NT4 1 |
9ac00b7d SF |
439 | #define CIFS_SES_OS2 2 |
440 | #define CIFS_SES_W9X 4 | |
441 | /* following flag is set for old servers such as OS2 (and Win95?) | |
442 | which do not negotiate NTLM or POSIX dialects, but instead | |
443 | negotiate one of the older LANMAN dialects */ | |
444 | #define CIFS_SES_LANMAN 8 | |
1da177e4 LT |
445 | /* |
446 | * there is one of these for each connection to a resource on a particular | |
d38d8c74 | 447 | * session |
1da177e4 | 448 | */ |
96daf2b0 | 449 | struct cifs_tcon { |
f1987b44 JL |
450 | struct list_head tcon_list; |
451 | int tc_count; | |
1da177e4 | 452 | struct list_head openFileList; |
96daf2b0 | 453 | struct cifs_ses *ses; /* pointer to session associated with */ |
254e55ed | 454 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
1da177e4 | 455 | char *nativeFileSystem; |
00e485b0 | 456 | char *password; /* for share-level security */ |
1da177e4 LT |
457 | __u16 tid; /* The 2 byte tree id */ |
458 | __u16 Flags; /* optional support bits */ | |
459 | enum statusEnum tidStatus; | |
1da177e4 LT |
460 | #ifdef CONFIG_CIFS_STATS |
461 | atomic_t num_smbs_sent; | |
462 | atomic_t num_writes; | |
463 | atomic_t num_reads; | |
b298f223 | 464 | atomic_t num_flushes; |
1da177e4 LT |
465 | atomic_t num_oplock_brks; |
466 | atomic_t num_opens; | |
a5a2b489 | 467 | atomic_t num_closes; |
1da177e4 LT |
468 | atomic_t num_deletes; |
469 | atomic_t num_mkdirs; | |
65bc98b0 SF |
470 | atomic_t num_posixopens; |
471 | atomic_t num_posixmkdirs; | |
1da177e4 LT |
472 | atomic_t num_rmdirs; |
473 | atomic_t num_renames; | |
474 | atomic_t num_t2renames; | |
dfb7533b SF |
475 | atomic_t num_ffirst; |
476 | atomic_t num_fnext; | |
477 | atomic_t num_fclose; | |
a5a2b489 SF |
478 | atomic_t num_hardlinks; |
479 | atomic_t num_symlinks; | |
480 | atomic_t num_locks; | |
0a4b92c0 SF |
481 | atomic_t num_acl_get; |
482 | atomic_t num_acl_set; | |
a5a2b489 SF |
483 | #ifdef CONFIG_CIFS_STATS2 |
484 | unsigned long long time_writes; | |
485 | unsigned long long time_reads; | |
486 | unsigned long long time_opens; | |
487 | unsigned long long time_deletes; | |
488 | unsigned long long time_closes; | |
489 | unsigned long long time_mkdirs; | |
490 | unsigned long long time_rmdirs; | |
491 | unsigned long long time_renames; | |
492 | unsigned long long time_t2renames; | |
493 | unsigned long long time_ffirst; | |
494 | unsigned long long time_fnext; | |
495 | unsigned long long time_fclose; | |
496 | #endif /* CONFIG_CIFS_STATS2 */ | |
1da177e4 LT |
497 | __u64 bytes_read; |
498 | __u64 bytes_written; | |
499 | spinlock_t stat_lock; | |
a5a2b489 | 500 | #endif /* CONFIG_CIFS_STATS */ |
1da177e4 | 501 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
254e55ed | 502 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
1da177e4 | 503 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
4b18f2a9 SF |
504 | bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ |
505 | bool retry:1; | |
506 | bool nocase:1; | |
95b1cb90 | 507 | bool seal:1; /* transport encryption for this mounted share */ |
4b18f2a9 | 508 | bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol |
c18c842b | 509 | for this mount even if server would support */ |
84210e91 | 510 | bool local_lease:1; /* check leases (only) on local system not remote */ |
64cc2c63 | 511 | bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ |
3b795210 | 512 | bool need_reconnect:1; /* connection reset, tid now invalid */ |
d03382ce SJ |
513 | #ifdef CONFIG_CIFS_FSCACHE |
514 | u64 resource_id; /* server resource id */ | |
515 | struct fscache_cookie *fscache; /* cookie for share */ | |
516 | #endif | |
c18c842b | 517 | /* BB add field for back pointer to sb struct(s)? */ |
1da177e4 LT |
518 | }; |
519 | ||
7ffec372 JL |
520 | /* |
521 | * This is a refcounted and timestamped container for a tcon pointer. The | |
522 | * container holds a tcon reference. It is considered safe to free one of | |
523 | * these when the tl_count goes to 0. The tl_time is the time of the last | |
524 | * "get" on the container. | |
525 | */ | |
526 | struct tcon_link { | |
b647c35f JL |
527 | struct rb_node tl_rbnode; |
528 | uid_t tl_uid; | |
9d002df4 JL |
529 | unsigned long tl_flags; |
530 | #define TCON_LINK_MASTER 0 | |
531 | #define TCON_LINK_PENDING 1 | |
532 | #define TCON_LINK_IN_TREE 2 | |
533 | unsigned long tl_time; | |
534 | atomic_t tl_count; | |
96daf2b0 | 535 | struct cifs_tcon *tl_tcon; |
7ffec372 JL |
536 | }; |
537 | ||
9d002df4 | 538 | extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb); |
7ffec372 | 539 | |
96daf2b0 | 540 | static inline struct cifs_tcon * |
7ffec372 JL |
541 | tlink_tcon(struct tcon_link *tlink) |
542 | { | |
9d002df4 | 543 | return tlink->tl_tcon; |
7ffec372 JL |
544 | } |
545 | ||
9d002df4 | 546 | extern void cifs_put_tlink(struct tcon_link *tlink); |
7ffec372 | 547 | |
13cfb733 JL |
548 | static inline struct tcon_link * |
549 | cifs_get_tlink(struct tcon_link *tlink) | |
550 | { | |
9d002df4 JL |
551 | if (tlink && !IS_ERR(tlink)) |
552 | atomic_inc(&tlink->tl_count); | |
13cfb733 JL |
553 | return tlink; |
554 | } | |
555 | ||
7ffec372 | 556 | /* This function is always expected to succeed */ |
96daf2b0 | 557 | extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); |
7ffec372 | 558 | |
1da177e4 | 559 | /* |
7ee1af76 JA |
560 | * This info hangs off the cifsFileInfo structure, pointed to by llist. |
561 | * This is used to track byte stream locks on the file | |
1da177e4 LT |
562 | */ |
563 | struct cifsLockInfo { | |
7ee1af76 | 564 | struct list_head llist; /* pointer to next cifsLockInfo */ |
85160e03 PS |
565 | struct list_head blist; /* pointer to locks blocked on this */ |
566 | wait_queue_head_t block_q; | |
7ee1af76 JA |
567 | __u64 offset; |
568 | __u64 length; | |
03776f45 | 569 | __u32 pid; |
7ee1af76 | 570 | __u8 type; |
1da177e4 LT |
571 | }; |
572 | ||
573 | /* | |
574 | * One of these for each open instance of a file | |
575 | */ | |
576 | struct cifs_search_info { | |
577 | loff_t index_of_last_entry; | |
578 | __u16 entries_in_buffer; | |
579 | __u16 info_level; | |
580 | __u32 resume_key; | |
d38d8c74 SF |
581 | char *ntwrk_buf_start; |
582 | char *srch_entries_start; | |
0752f152 | 583 | char *last_entry; |
eaf35b1e | 584 | const char *presume_name; |
1da177e4 | 585 | unsigned int resume_name_len; |
4b18f2a9 SF |
586 | bool endOfSearch:1; |
587 | bool emptyDir:1; | |
588 | bool unicode:1; | |
589 | bool smallBuf:1; /* so we know which buf_release function to call */ | |
1da177e4 LT |
590 | }; |
591 | ||
592 | struct cifsFileInfo { | |
593 | struct list_head tlist; /* pointer to next fid owned by tcon */ | |
594 | struct list_head flist; /* next fid (file instance) for this inode */ | |
fbd35aca PS |
595 | struct list_head llist; /* |
596 | * brlocks held by this fid, protected by | |
597 | * lock_mutex from cifsInodeInfo structure | |
598 | */ | |
1da177e4 LT |
599 | unsigned int uid; /* allows finding which FileInfo structure */ |
600 | __u32 pid; /* process id who opened file */ | |
601 | __u16 netfid; /* file id from remote */ | |
602 | /* BB add lock scope info here if needed */ ; | |
603 | /* lock scope id (0 if none) */ | |
a5e18bc3 | 604 | struct dentry *dentry; |
15886177 | 605 | unsigned int f_flags; |
13cfb733 | 606 | struct tcon_link *tlink; |
4b18f2a9 | 607 | bool invalidHandle:1; /* file closed via session abend */ |
3bc303c2 | 608 | bool oplock_break_cancelled:1; |
6c0f6218 | 609 | int count; /* refcount protected by cifs_file_list_lock */ |
a6ce4932 | 610 | struct mutex fh_mutex; /* prevents reopen race after dead ses*/ |
1da177e4 | 611 | struct cifs_search_info srch_inf; |
9b646972 | 612 | struct work_struct oplock_break; /* work for oplock breaks */ |
1da177e4 LT |
613 | }; |
614 | ||
fa2989f4 PS |
615 | struct cifs_io_parms { |
616 | __u16 netfid; | |
617 | __u32 pid; | |
618 | __u64 offset; | |
619 | unsigned int length; | |
96daf2b0 | 620 | struct cifs_tcon *tcon; |
fa2989f4 PS |
621 | }; |
622 | ||
5f6dbc9e JL |
623 | /* |
624 | * Take a reference on the file private data. Must be called with | |
625 | * cifs_file_list_lock held. | |
626 | */ | |
35ebb415 JL |
627 | static inline |
628 | struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file) | |
6ab409b5 | 629 | { |
5f6dbc9e | 630 | ++cifs_file->count; |
35ebb415 | 631 | return cifs_file; |
6ab409b5 DK |
632 | } |
633 | ||
b33879aa | 634 | void cifsFileInfo_put(struct cifsFileInfo *cifs_file); |
6ab409b5 | 635 | |
1da177e4 LT |
636 | /* |
637 | * One of these for each file inode | |
638 | */ | |
639 | ||
640 | struct cifsInodeInfo { | |
d59dad2b | 641 | bool can_cache_brlcks; |
fbd35aca PS |
642 | struct mutex lock_mutex; /* |
643 | * protect the field above and llist | |
644 | * from every cifsFileInfo structure | |
645 | * from openFileList | |
646 | */ | |
d38d8c74 | 647 | /* BB add in lists for dirty pages i.e. write caching info for oplock */ |
1da177e4 | 648 | struct list_head openFileList; |
1da177e4 | 649 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
aae62fdb JL |
650 | bool clientCanCacheRead; /* read oplock */ |
651 | bool clientCanCacheAll; /* read and writebehind oplock */ | |
652 | bool delete_pending; /* DELETE_ON_CLOSE is set */ | |
653 | bool invalid_mapping; /* pagecache is invalid */ | |
654 | unsigned long time; /* jiffies of last update of inode */ | |
597b027f | 655 | u64 server_eof; /* current file size on server -- protected by i_lock */ |
cc0bad75 | 656 | u64 uniqueid; /* server inode number */ |
20054bd6 | 657 | u64 createtime; /* creation time on server */ |
9451a9a5 SJ |
658 | #ifdef CONFIG_CIFS_FSCACHE |
659 | struct fscache_cookie *fscache; | |
660 | #endif | |
1da177e4 LT |
661 | struct inode vfs_inode; |
662 | }; | |
663 | ||
664 | static inline struct cifsInodeInfo * | |
665 | CIFS_I(struct inode *inode) | |
666 | { | |
667 | return container_of(inode, struct cifsInodeInfo, vfs_inode); | |
668 | } | |
669 | ||
670 | static inline struct cifs_sb_info * | |
671 | CIFS_SB(struct super_block *sb) | |
672 | { | |
673 | return sb->s_fs_info; | |
674 | } | |
675 | ||
ab2f218f | 676 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
ac67055e JA |
677 | { |
678 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
679 | return '/'; | |
680 | else | |
681 | return '\\'; | |
682 | } | |
1da177e4 | 683 | |
f87d39d9 SF |
684 | static inline void |
685 | convert_delimiter(char *path, char delim) | |
686 | { | |
687 | int i; | |
688 | char old_delim; | |
689 | ||
690 | if (path == NULL) | |
691 | return; | |
692 | ||
693 | if (delim == '/') | |
694 | old_delim = '\\'; | |
695 | else | |
696 | old_delim = '/'; | |
697 | ||
698 | for (i = 0; path[i] != '\0'; i++) { | |
699 | if (path[i] == old_delim) | |
700 | path[i] = delim; | |
701 | } | |
702 | } | |
703 | ||
a4544347 SF |
704 | #ifdef CONFIG_CIFS_STATS |
705 | #define cifs_stats_inc atomic_inc | |
706 | ||
96daf2b0 | 707 | static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, |
a4544347 SF |
708 | unsigned int bytes) |
709 | { | |
710 | if (bytes) { | |
711 | spin_lock(&tcon->stat_lock); | |
712 | tcon->bytes_written += bytes; | |
713 | spin_unlock(&tcon->stat_lock); | |
714 | } | |
715 | } | |
716 | ||
96daf2b0 | 717 | static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon, |
a4544347 SF |
718 | unsigned int bytes) |
719 | { | |
720 | spin_lock(&tcon->stat_lock); | |
721 | tcon->bytes_read += bytes; | |
722 | spin_unlock(&tcon->stat_lock); | |
723 | } | |
724 | #else | |
725 | ||
d38d8c74 SF |
726 | #define cifs_stats_inc(field) do {} while (0) |
727 | #define cifs_stats_bytes_written(tcon, bytes) do {} while (0) | |
728 | #define cifs_stats_bytes_read(tcon, bytes) do {} while (0) | |
a4544347 SF |
729 | |
730 | #endif | |
731 | ||
2b84a36c JL |
732 | |
733 | /* | |
44d22d84 JL |
734 | * This is the prototype for the mid receive function. This function is for |
735 | * receiving the rest of the SMB frame, starting with the WordCount (which is | |
736 | * just after the MID in struct smb_hdr). Note: | |
737 | * | |
738 | * - This will be called by cifsd, with no locks held. | |
739 | * - The mid will still be on the pending_mid_q. | |
740 | * - mid->resp_buf will point to the current buffer. | |
741 | * | |
742 | * Returns zero on a successful receive, or an error. The receive state in | |
743 | * the TCP_Server_Info will also be updated. | |
744 | */ | |
745 | typedef int (mid_receive_t)(struct TCP_Server_Info *server, | |
746 | struct mid_q_entry *mid); | |
747 | ||
748 | /* | |
749 | * This is the prototype for the mid callback function. This is called once the | |
750 | * mid has been received off of the socket. When creating one, take special | |
751 | * care to avoid deadlocks. Things to bear in mind: | |
2b84a36c | 752 | * |
3c1105df JL |
753 | * - it will be called by cifsd, with no locks held |
754 | * - the mid will be removed from any lists | |
2b84a36c JL |
755 | */ |
756 | typedef void (mid_callback_t)(struct mid_q_entry *mid); | |
757 | ||
1da177e4 LT |
758 | /* one of these for every pending CIFS request to the server */ |
759 | struct mid_q_entry { | |
760 | struct list_head qhead; /* mids waiting on reply from this server */ | |
7c9421e1 PS |
761 | __u64 mid; /* multiplex id */ |
762 | __u32 pid; /* process id */ | |
1da177e4 | 763 | __u32 sequence_number; /* for CIFS signing */ |
1047abc1 SF |
764 | unsigned long when_alloc; /* when mid was created */ |
765 | #ifdef CONFIG_CIFS_STATS2 | |
766 | unsigned long when_sent; /* time when smb send finished */ | |
767 | unsigned long when_received; /* when demux complete (taken off wire) */ | |
768 | #endif | |
44d22d84 | 769 | mid_receive_t *receive; /* call receive callback */ |
2b84a36c JL |
770 | mid_callback_t *callback; /* call completion callback */ |
771 | void *callback_data; /* general purpose pointer for callback */ | |
d4e4854f | 772 | void *resp_buf; /* pointer to received SMB header */ |
7c9421e1 PS |
773 | int mid_state; /* wish this were enum but can not pass to wait_event */ |
774 | __le16 command; /* smb command code */ | |
775 | bool large_buf:1; /* if valid response, is pointer to large buf */ | |
4b18f2a9 SF |
776 | bool multiRsp:1; /* multiple trans2 responses for one request */ |
777 | bool multiEnd:1; /* both received */ | |
1da177e4 LT |
778 | }; |
779 | ||
789e6661 SF |
780 | /* Make code in transport.c a little cleaner by moving |
781 | update of optional stats into function below */ | |
782 | #ifdef CONFIG_CIFS_STATS2 | |
783 | ||
784 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
785 | { | |
786 | atomic_inc(&server->in_send); | |
787 | } | |
788 | ||
789 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
790 | { | |
791 | atomic_dec(&server->in_send); | |
792 | } | |
793 | ||
794 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
795 | { | |
796 | atomic_inc(&server->num_waiters); | |
797 | } | |
798 | ||
799 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
800 | { | |
801 | atomic_dec(&server->num_waiters); | |
802 | } | |
803 | ||
804 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
805 | { | |
806 | mid->when_sent = jiffies; | |
807 | } | |
808 | #else | |
809 | static inline void cifs_in_send_inc(struct TCP_Server_Info *server) | |
810 | { | |
811 | } | |
812 | static inline void cifs_in_send_dec(struct TCP_Server_Info *server) | |
813 | { | |
814 | } | |
815 | ||
816 | static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server) | |
817 | { | |
818 | } | |
819 | ||
820 | static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server) | |
821 | { | |
822 | } | |
823 | ||
824 | static inline void cifs_save_when_sent(struct mid_q_entry *mid) | |
825 | { | |
826 | } | |
827 | #endif | |
1da177e4 | 828 | |
ff5dbd9e SF |
829 | /* for pending dnotify requests */ |
830 | struct dir_notify_req { | |
13cd4b7f SF |
831 | struct list_head lhead; |
832 | __le16 Pid; | |
833 | __le16 PidHigh; | |
834 | __u16 Mid; | |
835 | __u16 Tid; | |
836 | __u16 Uid; | |
837 | __u16 netfid; | |
838 | __u32 filter; /* CompletionFilter (for multishot) */ | |
839 | int multishot; | |
840 | struct file *pfile; | |
ff5dbd9e SF |
841 | }; |
842 | ||
366781c1 SF |
843 | struct dfs_info3_param { |
844 | int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/ | |
8aad018b | 845 | int path_consumed; |
366781c1 SF |
846 | int server_type; |
847 | int ref_flag; | |
848 | char *path_name; | |
849 | char *node_name; | |
850 | }; | |
851 | ||
cc0bad75 JL |
852 | /* |
853 | * common struct for holding inode info when searching for or updating an | |
854 | * inode with new info | |
855 | */ | |
856 | ||
857 | #define CIFS_FATTR_DFS_REFERRAL 0x1 | |
0b8f18e3 JL |
858 | #define CIFS_FATTR_DELETE_PENDING 0x2 |
859 | #define CIFS_FATTR_NEED_REVAL 0x4 | |
3d694380 | 860 | #define CIFS_FATTR_INO_COLLISION 0x8 |
cc0bad75 JL |
861 | |
862 | struct cifs_fattr { | |
863 | u32 cf_flags; | |
864 | u32 cf_cifsattrs; | |
865 | u64 cf_uniqueid; | |
866 | u64 cf_eof; | |
867 | u64 cf_bytes; | |
20054bd6 | 868 | u64 cf_createtime; |
cc0bad75 JL |
869 | uid_t cf_uid; |
870 | gid_t cf_gid; | |
871 | umode_t cf_mode; | |
872 | dev_t cf_rdev; | |
873 | unsigned int cf_nlink; | |
874 | unsigned int cf_dtype; | |
875 | struct timespec cf_atime; | |
876 | struct timespec cf_mtime; | |
877 | struct timespec cf_ctime; | |
878 | }; | |
879 | ||
366781c1 SF |
880 | static inline void free_dfs_info_param(struct dfs_info3_param *param) |
881 | { | |
882 | if (param) { | |
883 | kfree(param->path_name); | |
884 | kfree(param->node_name); | |
885 | kfree(param); | |
886 | } | |
887 | } | |
888 | ||
889 | static inline void free_dfs_info_array(struct dfs_info3_param *param, | |
890 | int number_of_items) | |
891 | { | |
892 | int i; | |
893 | if ((number_of_items == 0) || (param == NULL)) | |
894 | return; | |
895 | for (i = 0; i < number_of_items; i++) { | |
896 | kfree(param[i].path_name); | |
897 | kfree(param[i].node_name); | |
898 | } | |
899 | kfree(param); | |
900 | } | |
901 | ||
1da177e4 LT |
902 | #define MID_FREE 0 |
903 | #define MID_REQUEST_ALLOCATED 1 | |
904 | #define MID_REQUEST_SUBMITTED 2 | |
905 | #define MID_RESPONSE_RECEIVED 4 | |
906 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ | |
71823baf | 907 | #define MID_RESPONSE_MALFORMED 0x10 |
3c1105df | 908 | #define MID_SHUTDOWN 0x20 |
ec637e3f SF |
909 | |
910 | /* Types of response buffer returned from SendReceive2 */ | |
911 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ | |
912 | #define CIFS_SMALL_BUFFER 1 | |
913 | #define CIFS_LARGE_BUFFER 2 | |
914 | #define CIFS_IOVEC 4 /* array of response buffers */ | |
1da177e4 | 915 | |
133672ef | 916 | /* Type of Request to SendReceive2 */ |
7749981e JL |
917 | #define CIFS_BLOCKING_OP 1 /* operation can block */ |
918 | #define CIFS_ASYNC_OP 2 /* do not wait for response */ | |
919 | #define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */ | |
133672ef SF |
920 | #define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */ |
921 | #define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */ | |
922 | #define CIFS_NO_RESP 0x040 /* no response buffer required */ | |
923 | ||
3979877e SF |
924 | /* Security Flags: indicate type of session setup needed */ |
925 | #define CIFSSEC_MAY_SIGN 0x00001 | |
926 | #define CIFSSEC_MAY_NTLM 0x00002 | |
927 | #define CIFSSEC_MAY_NTLMV2 0x00004 | |
928 | #define CIFSSEC_MAY_KRB5 0x00008 | |
929 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
930 | #define CIFSSEC_MAY_LANMAN 0x00010 | |
931 | #define CIFSSEC_MAY_PLNTXT 0x00020 | |
516897a2 SF |
932 | #else |
933 | #define CIFSSEC_MAY_LANMAN 0 | |
934 | #define CIFSSEC_MAY_PLNTXT 0 | |
3979877e SF |
935 | #endif /* weak passwords */ |
936 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ | |
ac683924 | 937 | #define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */ |
3979877e SF |
938 | |
939 | #define CIFSSEC_MUST_SIGN 0x01001 | |
940 | /* note that only one of the following can be set so the | |
941 | result of setting MUST flags more than once will be to | |
942 | require use of the stronger protocol */ | |
943 | #define CIFSSEC_MUST_NTLM 0x02002 | |
944 | #define CIFSSEC_MUST_NTLMV2 0x04004 | |
945 | #define CIFSSEC_MUST_KRB5 0x08008 | |
946 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
947 | #define CIFSSEC_MUST_LANMAN 0x10010 | |
948 | #define CIFSSEC_MUST_PLNTXT 0x20020 | |
0d3a01fa | 949 | #ifdef CONFIG_CIFS_UPCALL |
20d1752f | 950 | #define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */ |
0d3a01fa | 951 | #else |
20d1752f | 952 | #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ |
016ec75f | 953 | #endif /* UPCALL */ |
0d3a01fa | 954 | #else /* do not allow weak pw hash */ |
88a4412b SF |
955 | #define CIFSSEC_MUST_LANMAN 0 |
956 | #define CIFSSEC_MUST_PLNTXT 0 | |
0d3a01fa | 957 | #ifdef CONFIG_CIFS_UPCALL |
ac683924 | 958 | #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ |
d38d8c74 | 959 | #else |
ac683924 | 960 | #define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */ |
016ec75f | 961 | #endif /* UPCALL */ |
3979877e SF |
962 | #endif /* WEAK_PW_HASH */ |
963 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ | |
ac683924 | 964 | #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ |
3979877e | 965 | |
ef571cad SP |
966 | #define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) |
967 | #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) | |
ac683924 | 968 | #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) |
1da177e4 LT |
969 | /* |
970 | ***************************************************************** | |
971 | * All constants go here | |
972 | ***************************************************************** | |
973 | */ | |
974 | ||
975 | #define UID_HASH (16) | |
976 | ||
977 | /* | |
978 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the | |
979 | * following to be declared. | |
980 | */ | |
981 | ||
982 | /**************************************************************************** | |
983 | * Locking notes. All updates to global variables and lists should be | |
984 | * protected by spinlocks or semaphores. | |
985 | * | |
986 | * Spinlocks | |
987 | * --------- | |
988 | * GlobalMid_Lock protects: | |
989 | * list operations on pending_mid_q and oplockQ | |
990 | * updates to XID counters, multiplex id and SMB sequence numbers | |
6573e9b7 | 991 | * cifs_file_list_lock protects: |
1da177e4 LT |
992 | * list operations on tcp and SMB session lists and tCon lists |
993 | * f_owner.lock protects certain per file struct operations | |
994 | * mapping->page_lock protects certain per page operations | |
995 | * | |
996 | * Semaphores | |
997 | * ---------- | |
998 | * sesSem operations on smb session | |
999 | * tconSem operations on tree connection | |
d38d8c74 | 1000 | * fh_sem file handle reconnection operations |
1da177e4 LT |
1001 | * |
1002 | ****************************************************************************/ | |
1003 | ||
1004 | #ifdef DECLARE_GLOBALS_HERE | |
1005 | #define GLOBAL_EXTERN | |
1006 | #else | |
1007 | #define GLOBAL_EXTERN extern | |
1008 | #endif | |
1009 | ||
e7ddee90 JL |
1010 | /* |
1011 | * the list of TCP_Server_Info structures, ie each of the sockets | |
fb396016 | 1012 | * connecting our client to a distinct server (ip address), is |
e7ddee90 | 1013 | * chained together by cifs_tcp_ses_list. The list of all our SMB |
fb396016 | 1014 | * sessions (and from that the tree connections) can be found |
e7ddee90 JL |
1015 | * by iterating over cifs_tcp_ses_list |
1016 | */ | |
1017 | GLOBAL_EXTERN struct list_head cifs_tcp_ses_list; | |
1018 | ||
f1987b44 JL |
1019 | /* |
1020 | * This lock protects the cifs_tcp_ses_list, the list of smb sessions per | |
1021 | * tcp session, and the list of tcon's per smb session. It also protects | |
1022 | * the reference counters for the server, smb session, and tcon. Finally, | |
1023 | * changes to the tcon->tidStatus should be done while holding this lock. | |
1024 | */ | |
3f9bcca7 | 1025 | GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock; |
ddb4cbfc SF |
1026 | |
1027 | /* | |
1028 | * This lock protects the cifs_file->llist and cifs_file->flist | |
1029 | * list operations, and updates to some flags (cifs_file->invalidHandle) | |
1030 | * It will be moved to either use the tcon->stat_lock or equivalent later. | |
1031 | * If cifs_tcp_ses_lock and the lock below are both needed to be held, then | |
1032 | * the cifs_tcp_ses_lock must be grabbed first and released last. | |
1033 | */ | |
4477288a | 1034 | GLOBAL_EXTERN spinlock_t cifs_file_list_lock; |
1da177e4 | 1035 | |
0eff0e26 | 1036 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
99ee4dbd SF |
1037 | /* Outstanding dir notify requests */ |
1038 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; | |
1039 | /* DirNotify response queue */ | |
1040 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q; | |
0eff0e26 | 1041 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
ff5dbd9e | 1042 | |
1da177e4 LT |
1043 | /* |
1044 | * Global transaction id (XID) information | |
1045 | */ | |
1046 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ | |
254e55ed | 1047 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
1da177e4 | 1048 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
254e55ed SF |
1049 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
1050 | /* on midQ entries */ | |
1da177e4 LT |
1051 | /* |
1052 | * Global counters, updated atomically | |
1053 | */ | |
1054 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; | |
1055 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; | |
1056 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; | |
1057 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; | |
1058 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; | |
1059 | ||
aaa9bbe0 | 1060 | /* Various Debug counters */ |
4498eed5 SF |
1061 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
1062 | #ifdef CONFIG_CIFS_STATS2 | |
1063 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ | |
1064 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; | |
1065 | #endif | |
1066 | GLOBAL_EXTERN atomic_t smBufAllocCount; | |
1da177e4 LT |
1067 | GLOBAL_EXTERN atomic_t midCount; |
1068 | ||
1069 | /* Misc globals */ | |
5e500ed1 | 1070 | GLOBAL_EXTERN bool enable_oplocks; /* enable or disable oplocks */ |
1da177e4 | 1071 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
04912d6a | 1072 | GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent |
1da177e4 | 1073 | with more secure ntlmssp2 challenge/resp */ |
1da177e4 LT |
1074 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
1075 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ | |
1076 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ | |
1077 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ | |
1078 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ | |
1079 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ | |
1080 | ||
21fed0d5 | 1081 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1082 | GLOBAL_EXTERN struct rb_root uidtree; |
1083 | GLOBAL_EXTERN struct rb_root gidtree; | |
1084 | GLOBAL_EXTERN spinlock_t siduidlock; | |
1085 | GLOBAL_EXTERN spinlock_t sidgidlock; | |
21fed0d5 SP |
1086 | GLOBAL_EXTERN struct rb_root siduidtree; |
1087 | GLOBAL_EXTERN struct rb_root sidgidtree; | |
1088 | GLOBAL_EXTERN spinlock_t uidsidlock; | |
1089 | GLOBAL_EXTERN spinlock_t gidsidlock; | |
1090 | #endif /* CONFIG_CIFS_ACL */ | |
4d79dba0 | 1091 | |
9b646972 | 1092 | void cifs_oplock_break(struct work_struct *work); |
3b7433b8 | 1093 | |
3bc303c2 | 1094 | extern const struct slow_work_ops cifs_oplock_break_ops; |
da472fc8 | 1095 | extern struct workqueue_struct *cifsiod_wq; |
abd2e44d | 1096 | |
23db65f5 JL |
1097 | /* Operations for different SMB versions */ |
1098 | #define SMB1_VERSION_STRING "1.0" | |
1099 | extern struct smb_version_operations smb1_operations; | |
1100 | extern struct smb_version_values smb1_values; | |
abd2e44d | 1101 | #endif /* _CIFS_GLOB_H */ |