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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/cifs/cifsglob.h
3 *
Steve French366781c2008-01-25 10:12:41 +00004 * Copyright (C) International Business Machines Corp., 2002,2008
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * Author(s): Steve French (sfrench@us.ibm.com)
Jeremy Allison7ee1af72006-08-02 21:56:33 +00006 * Jeremy Allison (jra@samba.org)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
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.
Steve Frenchd38d8c72007-06-28 19:44:13 +000017 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 */
Suresh Jayaramanabd2e442010-06-22 20:52:50 +053019#ifndef _CIFS_GLOB_H
20#define _CIFS_GLOB_H
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/in.h>
23#include <linux/in6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090024#include <linux/slab.h>
Tejun Heo9b646972010-07-20 22:09:02 +020025#include <linux/workqueue.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include "cifs_fs_sb.h"
Steve French442aa312007-09-24 20:25:46 +000027#include "cifsacl.h"
Shirish Pargaonkard2b91522010-10-21 14:25:08 -050028#include <crypto/internal/hash.h>
29#include <linux/scatterlist.h>
30
Linus Torvalds1da177e2005-04-16 15:20:36 -070031/*
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
Shirish Pargaonkaref571ca2008-07-24 15:56:05 +000038#define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#define MAX_SERVER_SIZE 15
Steve French2e325d52011-03-08 05:51:19 +000040#define MAX_SHARE_SIZE 80
Steve French8727c8a2011-02-25 01:11:56 -060041#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44#define CIFS_MIN_RCV_POOL 4
45
46/*
Suresh Jayaraman6d20e842010-12-01 14:42:28 +053047 * 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
56/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 * MAX_REQ is the maximum number of requests that WE will send
André Goddard Rosaaf901ca2009-11-14 13:09:05 -020058 * on one socket concurrently. It also matches the most common
Steve Frenchd38d8c72007-06-28 19:44:13 +000059 * value of max multiplex returned by servers. We may
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 * eventually want to use the negotiated value (in case
61 * future servers can handle more) when we are more confident that
62 * we will not have problems oveloading the socket with pending
63 * write data.
64 */
Steve Frenchd38d8c72007-06-28 19:44:13 +000065#define CIFS_MAX_REQ 50
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Jeff Layton8ecaf672008-12-01 15:23:50 -050067#define RFC1001_NAME_LEN 15
68#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
69
70/* currently length of NIP6_FMT */
71#define SERVER_NAME_LENGTH 40
Linus Torvalds1da177e2005-04-16 15:20:36 -070072#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
73
74/* used to define string lengths for reversing unicode strings */
75/* (256+1)*2 = 514 */
76/* (max path length + 1 for null) * 2 for unicode */
77#define MAX_NAME 514
78
79#include "cifspdu.h"
80
Linus Torvalds1da177e2005-04-16 15:20:36 -070081#ifndef XATTR_DOS_ATTRIB
82#define XATTR_DOS_ATTRIB "user.DOSATTRIB"
83#endif
84
85/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 * CIFS vfs client Status information (based on what we know.)
87 */
88
Steve French6c0f6212010-10-23 16:51:40 +000089/* associated with each tcp and smb session */
Linus Torvalds1da177e2005-04-16 15:20:36 -070090enum statusEnum {
91 CifsNew = 0,
92 CifsGood,
93 CifsExiting,
Steve Frenchfd88ce92011-04-12 01:01:14 +000094 CifsNeedReconnect,
95 CifsNeedNegotiate
Linus Torvalds1da177e2005-04-16 15:20:36 -070096};
97
98enum securityEnum {
Jeff Laytondaf5b0b2010-07-06 20:43:02 -040099 LANMAN = 0, /* Legacy LANMAN auth */
Steve French39798772006-05-31 22:40:51 +0000100 NTLM, /* Legacy NTLM012 auth with NTLM hash */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */
Steve Frenchac683922009-05-06 04:16:04 +0000102 RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */
Steve Frenchf46c7232009-06-25 03:04:20 +0000103/* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */
Steve Frenchc16fefa2008-08-19 19:35:33 +0000104 Kerberos, /* Kerberos via SPNEGO */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105};
106
107enum protocolEnum {
Steve French3ec332e2008-11-14 03:35:10 +0000108 TCP = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 SCTP
110 /* Netbios frames protocol not supported at this time */
111};
112
Shirish Pargaonkar5f98ca92010-09-18 22:01:58 -0500113struct session_key {
Steve Frenchb609f062007-07-09 07:55:14 +0000114 unsigned int len;
Shirish Pargaonkar21e73392010-10-21 06:42:55 -0500115 char *response;
Steve Frenchb609f062007-07-09 07:55:14 +0000116};
117
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500118/* crypto security descriptor definition */
119struct sdesc {
120 struct shash_desc shash;
121 char ctx[];
122};
123
Shirish Pargaonkarf7c5445a2010-10-26 18:10:24 -0500124/* crypto hashing related structure/fields, not specific to a sec mech */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500125struct 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
Shirish Pargaonkard3686d52010-10-28 09:53:07 -0500132/* per smb session structure/fields */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500133struct 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 */
Shirish Pargaonkard3686d52010-10-28 09:53:07 -0500137 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlmssp */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500138};
139
Steve French442aa312007-09-24 20:25:46 +0000140struct 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151/*
152 *****************************************************************
153 * Except the CIFS PDUs themselves all the
154 * globally interesting structs should go here
155 *****************************************************************
156 */
157
Steve Frenchf87d39d2011-05-27 03:50:55 +0000158struct smb_vol {
159 char *username;
160 char *password;
161 char *domainname;
162 char *UNC;
163 char *UNCip;
164 char *iocharset; /* local code page for mapping to and from Unicode */
165 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
166 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
167 uid_t cred_uid;
168 uid_t linux_uid;
169 gid_t linux_gid;
170 mode_t file_mode;
171 mode_t dir_mode;
172 unsigned secFlg;
173 bool retry:1;
174 bool intr:1;
175 bool setuids:1;
176 bool override_uid:1;
177 bool override_gid:1;
178 bool dynperm:1;
179 bool noperm:1;
180 bool no_psx_acl:1; /* set if posix acl support should be disabled */
181 bool cifs_acl:1;
182 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
183 bool server_ino:1; /* use inode numbers from server ie UniqueId */
184 bool direct_io:1;
185 bool strict_io:1; /* strict cache behavior */
186 bool remap:1; /* set to remap seven reserved chars in filenames */
187 bool posix_paths:1; /* unset to not ask for posix pathnames. */
188 bool no_linux_ext:1;
189 bool sfu_emul:1;
190 bool nullauth:1; /* attempt to authenticate with null user */
191 bool nocase:1; /* request case insensitive filenames */
192 bool nobrl:1; /* disable sending byte range locks to srv */
193 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */
194 bool seal:1; /* request transport encryption on share */
195 bool nodfs:1; /* Do not request DFS, even if available */
196 bool local_lease:1; /* check leases only on local system, not remote */
197 bool noblocksnd:1;
198 bool noautotune:1;
199 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
200 bool fsc:1; /* enable fscache */
201 bool mfsymlinks:1; /* use Minshall+French Symlinks */
202 bool multiuser:1;
203 unsigned int rsize;
204 unsigned int wsize;
205 bool sockopt_tcp_nodelay:1;
206 unsigned short int port;
207 unsigned long actimeo; /* attribute cache timeout (jiffies) */
208 char *prepath;
209 struct sockaddr_storage srcaddr; /* allow binding to a local IP */
210 struct nls_table *local_nls;
211};
212
Pavel Shilovsky25c7f412011-05-26 23:35:47 +0400213#define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
214 CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
215 CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
216 CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \
217 CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \
218 CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \
219 CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
220 CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
221 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO)
222
223#define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \
224 MS_NODEV | MS_SYNCHRONOUS)
225
226struct cifs_mnt_data {
227 struct cifs_sb_info *cifs_sb;
228 struct smb_vol *vol;
229 int flags;
230};
231
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232struct TCP_Server_Info {
Steve French3b795212008-11-13 19:45:32 +0000233 struct list_head tcp_ses_list;
234 struct list_head smb_ses_list;
Jeff Laytone7ddee92008-11-14 13:44:38 -0500235 int srv_count; /* reference counter */
Steve Frencha10faeb22005-08-22 21:38:31 -0700236 /* 15 character server name + 0x20 16th byte indicating type = srv */
Jeff Layton8ecaf672008-12-01 15:23:50 -0500237 char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500238 enum statusEnum tcpStatus; /* what we think the status is */
Jeff Laytonc359cf32007-11-16 22:22:06 +0000239 char *hostname; /* hostname portion of UNC string */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 struct socket *ssocket;
Pavel Shilovskya9f1b852010-12-13 19:08:35 +0300241 struct sockaddr_storage dstaddr;
Ben Greear3eb9a882010-09-01 17:06:02 -0700242 struct sockaddr_storage srcaddr; /* locally bind to this IP */
Rob Landleyf1d0c992011-01-22 15:44:05 -0600243#ifdef CONFIG_NET_NS
244 struct net *net;
245#endif
Steve Frenchd38d8c72007-06-28 19:44:13 +0000246 wait_queue_head_t response_q;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
248 struct list_head pending_mid_q;
Steve Frenchedf1ae42008-10-29 00:47:57 +0000249 bool noblocksnd; /* use blocking sendmsg */
250 bool noautotune; /* do not autotune send buf sizes */
Steve French6a5fa2362010-01-01 01:28:43 +0000251 bool tcp_nodelay;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 atomic_t inFlight; /* number of requests on the wire to server */
Jeff Layton72ca5452008-12-01 07:09:36 -0500253 struct mutex srv_mutex;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 struct task_struct *tsk;
255 char server_GUID[16];
256 char secMode;
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500257 bool session_estab; /* mark when very first sess is established */
258 u16 dialect; /* dialect index that server chose */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 enum securityEnum secType;
260 unsigned int maxReq; /* Clients should submit no more */
261 /* than maxReq distinct unanswered SMBs to the server when using */
262 /* multiplexed reads or writes */
263 unsigned int maxBuf; /* maxBuf specifies the maximum */
264 /* message size the server can send or receive for non-raw SMBs */
Steve French7e90d702011-02-08 23:52:32 +0000265 /* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */
266 /* when socket is setup (and during reconnect) before NegProt sent */
Steve Frencheca6acf2009-02-20 05:43:09 +0000267 unsigned int max_rw; /* maxRw specifies the maximum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 /* message size the server can send or receive for */
269 /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
Steve Frencheca6acf2009-02-20 05:43:09 +0000270 unsigned int max_vcs; /* maximum number of smb sessions, at least
271 those that can be specified uniquely with
272 vcnumbers */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 int capabilities; /* allow selective disabling of caps by smb sess */
Steve Frenchde7ed552006-09-30 13:25:52 +0000274 int timeAdj; /* Adjust for difference in server time zone in sec */
Steve French1982c342005-08-17 12:38:22 -0700275 __u16 CurrentMid; /* multiplex id - rotating counter */
Shirish Pargaonkard3ba50b2010-10-27 15:20:36 -0500276 char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
Steve Frencha10faeb22005-08-22 21:38:31 -0700277 /* 16th byte of RFC1001 workstation name is always null */
Jeff Layton8ecaf672008-12-01 15:23:50 -0500278 char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
Jeff Laytona0f8b4f2011-01-07 11:30:28 -0500279 __u32 sequence_number; /* for signing, protected by srv_mutex */
Shirish Pargaonkar5f98ca92010-09-18 22:01:58 -0500280 struct session_key session_key;
Steve French3a5ff612006-07-14 22:37:11 +0000281 unsigned long lstrp; /* when we got last response from this server */
Shirish Pargaonkard2b91522010-10-21 14:25:08 -0500282 struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */
Jeff Layton26efa0b2010-04-24 07:57:49 -0400283 /* extended security flavors that server supports */
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500284 bool sec_ntlmssp; /* supports NTLMSSP */
285 bool sec_kerberosu2u; /* supports U2U Kerberos */
Jeff Layton26efa0b2010-04-24 07:57:49 -0400286 bool sec_kerberos; /* supports plain Kerberos */
287 bool sec_mskerberos; /* supports legacy MS Kerberos */
Jeff Laytonc74093b2011-01-11 07:24:23 -0500288 struct delayed_work echo; /* echo ping workqueue job */
Suresh Jayaraman488f1d2d2010-07-05 18:12:15 +0530289#ifdef CONFIG_CIFS_FSCACHE
290 struct fscache_cookie *fscache; /* client index cache cookie */
291#endif
Jeff Laytonc3dccf42011-01-20 13:36:50 -0500292#ifdef CONFIG_CIFS_STATS2
293 atomic_t inSend; /* requests trying to send */
294 atomic_t num_waiters; /* blocked waiting to get in sendrecv */
295#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296};
297
298/*
Rob Landleyf1d0c992011-01-22 15:44:05 -0600299 * Macros to allow the TCP_Server_Info->net field and related code to drop out
300 * when CONFIG_NET_NS isn't set.
301 */
302
303#ifdef CONFIG_NET_NS
304
305static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
306{
307 return srv->net;
308}
309
310static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
311{
312 srv->net = net;
313}
314
315#else
316
317static inline struct net *cifs_net_ns(struct TCP_Server_Info *srv)
318{
319 return &init_net;
320}
321
322static inline void cifs_set_net_ns(struct TCP_Server_Info *srv, struct net *net)
323{
324}
325
326#endif
327
328/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 * Session structure. One of these for each uid session with a particular host
330 */
331struct cifsSesInfo {
Jeff Layton14fbf502008-11-14 13:53:46 -0500332 struct list_head smb_ses_list;
Steve French3b795212008-11-13 19:45:32 +0000333 struct list_head tcon_list;
Steve Frenchd7b619c2010-02-25 05:36:46 +0000334 struct mutex session_mutex;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 struct TCP_Server_Info *server; /* pointer to server info */
Jeff Layton14fbf502008-11-14 13:53:46 -0500336 int ses_count; /* reference counter */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 enum statusEnum status;
Steve French750d1152006-06-27 06:28:30 +0000338 unsigned overrideSecFlg; /* if non-zero override global sec flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 __u16 ipc_tid; /* special tid for connection to IPC share */
340 __u16 flags;
Steve Frencheca6acf2009-02-20 05:43:09 +0000341 __u16 vcnum;
Steve Frenchad009ac2005-04-28 22:41:05 -0700342 char *serverOS; /* name of operating system underlying server */
343 char *serverNOS; /* name of network operating system of server */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 char *serverDomain; /* security realm of server */
345 int Suid; /* remote smb uid */
Jeff Layton3e4b3e12010-07-19 18:00:17 -0400346 uid_t linux_uid; /* overriding owner of files on the mount */
347 uid_t cred_uid; /* owner of credentials */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 int capabilities;
Steve Frenchd38d8c72007-06-28 19:44:13 +0000349 char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
Steve Frenchad009ac2005-04-28 22:41:05 -0700350 TCP names - will ipv6 and sctp addresses fit? */
Steve French34c87902011-03-01 05:02:57 +0000351 char *user_name; /* must not be null except during init of sess
352 and after mount option parsing we fill it */
Steve Frenchd38d8c72007-06-28 19:44:13 +0000353 char *domainName;
354 char *password;
Shirish Pargaonkar5d0d2882010-10-13 18:15:00 -0500355 struct session_key auth_key;
Shirish Pargaonkard3686d52010-10-28 09:53:07 -0500356 struct ntlmssp_auth *ntlmssp; /* ciphertext, flags, server challenge */
Steve French3b795212008-11-13 19:45:32 +0000357 bool need_reconnect:1; /* connection reset, uid now invalid */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358};
Steve French9ac00b72006-09-30 04:13:17 +0000359/* no more than one of the following three session flags may be set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360#define CIFS_SES_NT4 1
Steve French9ac00b72006-09-30 04:13:17 +0000361#define CIFS_SES_OS2 2
362#define CIFS_SES_W9X 4
363/* following flag is set for old servers such as OS2 (and Win95?)
364 which do not negotiate NTLM or POSIX dialects, but instead
365 negotiate one of the older LANMAN dialects */
366#define CIFS_SES_LANMAN 8
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367/*
368 * there is one of these for each connection to a resource on a particular
Steve Frenchd38d8c72007-06-28 19:44:13 +0000369 * session
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 */
371struct cifsTconInfo {
Jeff Laytonf1987b42008-11-15 11:12:47 -0500372 struct list_head tcon_list;
373 int tc_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 struct list_head openFileList;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 struct cifsSesInfo *ses; /* pointer to session associated with */
Steve French254e55e2006-06-04 05:53:15 +0000376 char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 char *nativeFileSystem;
Jeff Layton00e485b2008-12-05 20:41:21 -0500378 char *password; /* for share-level security */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 __u16 tid; /* The 2 byte tree id */
380 __u16 Flags; /* optional support bits */
381 enum statusEnum tidStatus;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382#ifdef CONFIG_CIFS_STATS
383 atomic_t num_smbs_sent;
384 atomic_t num_writes;
385 atomic_t num_reads;
Steve Frenchb298f222009-02-21 21:17:43 +0000386 atomic_t num_flushes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 atomic_t num_oplock_brks;
388 atomic_t num_opens;
Steve Frencha5a2b482005-08-20 21:42:53 -0700389 atomic_t num_closes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 atomic_t num_deletes;
391 atomic_t num_mkdirs;
Steve French65bc98b2009-07-10 15:27:25 +0000392 atomic_t num_posixopens;
393 atomic_t num_posixmkdirs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 atomic_t num_rmdirs;
395 atomic_t num_renames;
396 atomic_t num_t2renames;
Steve Frenchdfb75332005-06-22 17:13:47 -0700397 atomic_t num_ffirst;
398 atomic_t num_fnext;
399 atomic_t num_fclose;
Steve Frencha5a2b482005-08-20 21:42:53 -0700400 atomic_t num_hardlinks;
401 atomic_t num_symlinks;
402 atomic_t num_locks;
Steve French0a4b92c2006-01-12 15:44:21 -0800403 atomic_t num_acl_get;
404 atomic_t num_acl_set;
Steve Frencha5a2b482005-08-20 21:42:53 -0700405#ifdef CONFIG_CIFS_STATS2
406 unsigned long long time_writes;
407 unsigned long long time_reads;
408 unsigned long long time_opens;
409 unsigned long long time_deletes;
410 unsigned long long time_closes;
411 unsigned long long time_mkdirs;
412 unsigned long long time_rmdirs;
413 unsigned long long time_renames;
414 unsigned long long time_t2renames;
415 unsigned long long time_ffirst;
416 unsigned long long time_fnext;
417 unsigned long long time_fclose;
418#endif /* CONFIG_CIFS_STATS2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 __u64 bytes_read;
420 __u64 bytes_written;
421 spinlock_t stat_lock;
Steve Frencha5a2b482005-08-20 21:42:53 -0700422#endif /* CONFIG_CIFS_STATS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 FILE_SYSTEM_DEVICE_INFO fsDevInfo;
Steve French254e55e2006-06-04 05:53:15 +0000424 FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 FILE_SYSTEM_UNIX_INFO fsUnixInfo;
Steve French4b18f2a2008-04-29 00:06:05 +0000426 bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */
427 bool retry:1;
428 bool nocase:1;
Steve French95b1cb92008-05-15 16:44:38 +0000429 bool seal:1; /* transport encryption for this mounted share */
Steve French4b18f2a2008-04-29 00:06:05 +0000430 bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
Steve Frenchc18c8422007-07-18 23:21:09 +0000431 for this mount even if server would support */
Steve French84210e92008-10-23 04:42:37 +0000432 bool local_lease:1; /* check leases (only) on local system not remote */
Steve French64cc2c62009-03-04 19:54:08 +0000433 bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */
Steve French3b795212008-11-13 19:45:32 +0000434 bool need_reconnect:1; /* connection reset, tid now invalid */
Suresh Jayaramand03382c2010-07-05 18:12:27 +0530435#ifdef CONFIG_CIFS_FSCACHE
436 u64 resource_id; /* server resource id */
437 struct fscache_cookie *fscache; /* cookie for share */
438#endif
Steve Frenchc18c8422007-07-18 23:21:09 +0000439 /* BB add field for back pointer to sb struct(s)? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440};
441
442/*
Jeff Layton7ffec372010-09-29 19:51:11 -0400443 * This is a refcounted and timestamped container for a tcon pointer. The
444 * container holds a tcon reference. It is considered safe to free one of
445 * these when the tl_count goes to 0. The tl_time is the time of the last
446 * "get" on the container.
447 */
448struct tcon_link {
Jeff Laytonb647c352010-10-28 11:16:44 -0400449 struct rb_node tl_rbnode;
450 uid_t tl_uid;
Jeff Layton9d002df2010-10-06 19:51:11 -0400451 unsigned long tl_flags;
452#define TCON_LINK_MASTER 0
453#define TCON_LINK_PENDING 1
454#define TCON_LINK_IN_TREE 2
455 unsigned long tl_time;
456 atomic_t tl_count;
Jeff Layton7ffec372010-09-29 19:51:11 -0400457 struct cifsTconInfo *tl_tcon;
458};
459
Jeff Layton9d002df2010-10-06 19:51:11 -0400460extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb);
Jeff Layton7ffec372010-09-29 19:51:11 -0400461
462static inline struct cifsTconInfo *
463tlink_tcon(struct tcon_link *tlink)
464{
Jeff Layton9d002df2010-10-06 19:51:11 -0400465 return tlink->tl_tcon;
Jeff Layton7ffec372010-09-29 19:51:11 -0400466}
467
Jeff Layton9d002df2010-10-06 19:51:11 -0400468extern void cifs_put_tlink(struct tcon_link *tlink);
Jeff Layton7ffec372010-09-29 19:51:11 -0400469
Jeff Layton13cfb732010-09-29 19:51:11 -0400470static inline struct tcon_link *
471cifs_get_tlink(struct tcon_link *tlink)
472{
Jeff Layton9d002df2010-10-06 19:51:11 -0400473 if (tlink && !IS_ERR(tlink))
474 atomic_inc(&tlink->tl_count);
Jeff Layton13cfb732010-09-29 19:51:11 -0400475 return tlink;
476}
477
Jeff Layton7ffec372010-09-29 19:51:11 -0400478/* This function is always expected to succeed */
Jeff Layton9d002df2010-10-06 19:51:11 -0400479extern struct cifsTconInfo *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
Jeff Layton7ffec372010-09-29 19:51:11 -0400480
481/*
Jeremy Allison7ee1af72006-08-02 21:56:33 +0000482 * This info hangs off the cifsFileInfo structure, pointed to by llist.
483 * This is used to track byte stream locks on the file
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 */
485struct cifsLockInfo {
Jeremy Allison7ee1af72006-08-02 21:56:33 +0000486 struct list_head llist; /* pointer to next cifsLockInfo */
487 __u64 offset;
488 __u64 length;
489 __u8 type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490};
491
492/*
493 * One of these for each open instance of a file
494 */
495struct cifs_search_info {
496 loff_t index_of_last_entry;
497 __u16 entries_in_buffer;
498 __u16 info_level;
499 __u32 resume_key;
Steve Frenchd38d8c72007-06-28 19:44:13 +0000500 char *ntwrk_buf_start;
501 char *srch_entries_start;
Steve French0752f152008-10-07 20:03:33 +0000502 char *last_entry;
Steve Frenchd38d8c72007-06-28 19:44:13 +0000503 char *presume_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 unsigned int resume_name_len;
Steve French4b18f2a2008-04-29 00:06:05 +0000505 bool endOfSearch:1;
506 bool emptyDir:1;
507 bool unicode:1;
508 bool smallBuf:1; /* so we know which buf_release function to call */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509};
510
511struct cifsFileInfo {
512 struct list_head tlist; /* pointer to next fid owned by tcon */
513 struct list_head flist; /* next fid (file instance) for this inode */
514 unsigned int uid; /* allows finding which FileInfo structure */
515 __u32 pid; /* process id who opened file */
516 __u16 netfid; /* file id from remote */
517 /* BB add lock scope info here if needed */ ;
518 /* lock scope id (0 if none) */
Jeff Laytona5e18bc2010-10-11 15:07:18 -0400519 struct dentry *dentry;
Jeff Layton15886172010-10-15 15:33:59 -0400520 unsigned int f_flags;
Jeff Layton13cfb732010-09-29 19:51:11 -0400521 struct tcon_link *tlink;
Roland Dreier796e5662007-05-03 04:33:45 +0000522 struct mutex lock_mutex;
Jeremy Allison7ee1af72006-08-02 21:56:33 +0000523 struct list_head llist; /* list of byte range locks we have. */
Steve French4b18f2a2008-04-29 00:06:05 +0000524 bool invalidHandle:1; /* file closed via session abend */
Jeff Layton3bc303c2009-09-21 06:47:50 -0400525 bool oplock_break_cancelled:1;
Steve French6c0f6212010-10-23 16:51:40 +0000526 int count; /* refcount protected by cifs_file_list_lock */
Steve Frencha6ce4932009-04-09 01:14:32 +0000527 struct mutex fh_mutex; /* prevents reopen race after dead ses*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 struct cifs_search_info srch_inf;
Tejun Heo9b646972010-07-20 22:09:02 +0200529 struct work_struct oplock_break; /* work for oplock breaks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530};
531
Pavel Shilovskyfa2989f2011-05-26 10:01:59 +0400532struct cifs_io_parms {
533 __u16 netfid;
534 __u32 pid;
535 __u64 offset;
536 unsigned int length;
537 struct cifsTconInfo *tcon;
538};
539
Jeff Layton5f6dbc92010-10-15 15:34:06 -0400540/*
541 * Take a reference on the file private data. Must be called with
542 * cifs_file_list_lock held.
543 */
Dave Kleikamp6ab409b2009-08-31 11:07:12 -0400544static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file)
545{
Jeff Layton5f6dbc92010-10-15 15:34:06 -0400546 ++cifs_file->count;
Dave Kleikamp6ab409b2009-08-31 11:07:12 -0400547}
548
Jeff Laytonb33879a2010-10-15 15:34:04 -0400549void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
Dave Kleikamp6ab409b2009-08-31 11:07:12 -0400550
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551/*
552 * One of these for each file inode
553 */
554
555struct cifsInodeInfo {
556 struct list_head lockList;
Steve Frenchd38d8c72007-06-28 19:44:13 +0000557 /* BB add in lists for dirty pages i.e. write caching info for oplock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 struct list_head openFileList;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
Jeff Laytonaae62fd2011-01-20 13:36:50 -0500560 bool clientCanCacheRead; /* read oplock */
561 bool clientCanCacheAll; /* read and writebehind oplock */
562 bool delete_pending; /* DELETE_ON_CLOSE is set */
563 bool invalid_mapping; /* pagecache is invalid */
564 unsigned long time; /* jiffies of last update of inode */
Jeff Laytonfbec9ab2009-04-03 13:44:00 -0400565 u64 server_eof; /* current file size on server */
Jeff Laytoncc0bad72009-06-25 00:56:52 -0400566 u64 uniqueid; /* server inode number */
Jeff Layton20054bd2011-01-07 11:30:27 -0500567 u64 createtime; /* creation time on server */
Suresh Jayaraman9451a9a2010-07-05 18:12:45 +0530568#ifdef CONFIG_CIFS_FSCACHE
569 struct fscache_cookie *fscache;
570#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 struct inode vfs_inode;
572};
573
574static inline struct cifsInodeInfo *
575CIFS_I(struct inode *inode)
576{
577 return container_of(inode, struct cifsInodeInfo, vfs_inode);
578}
579
580static inline struct cifs_sb_info *
581CIFS_SB(struct super_block *sb)
582{
583 return sb->s_fs_info;
584}
585
Steve Frenchab2f2182005-09-15 20:44:50 -0700586static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
Jeremy Allisonac670552005-06-22 17:26:35 -0700587{
588 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
589 return '/';
590 else
591 return '\\';
592}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
Steve Frenchf87d39d2011-05-27 03:50:55 +0000594static inline void
595convert_delimiter(char *path, char delim)
596{
597 int i;
598 char old_delim;
599
600 if (path == NULL)
601 return;
602
603 if (delim == '/')
604 old_delim = '\\';
605 else
606 old_delim = '/';
607
608 for (i = 0; path[i] != '\0'; i++) {
609 if (path[i] == old_delim)
610 path[i] = delim;
611 }
612}
613
Steve Frencha4544342005-08-24 13:59:35 -0700614#ifdef CONFIG_CIFS_STATS
615#define cifs_stats_inc atomic_inc
616
617static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon,
618 unsigned int bytes)
619{
620 if (bytes) {
621 spin_lock(&tcon->stat_lock);
622 tcon->bytes_written += bytes;
623 spin_unlock(&tcon->stat_lock);
624 }
625}
626
627static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon,
628 unsigned int bytes)
629{
630 spin_lock(&tcon->stat_lock);
631 tcon->bytes_read += bytes;
632 spin_unlock(&tcon->stat_lock);
633}
634#else
635
Steve Frenchd38d8c72007-06-28 19:44:13 +0000636#define cifs_stats_inc(field) do {} while (0)
637#define cifs_stats_bytes_written(tcon, bytes) do {} while (0)
638#define cifs_stats_bytes_read(tcon, bytes) do {} while (0)
Steve Frencha4544342005-08-24 13:59:35 -0700639
640#endif
641
Jeff Layton2b84a36c2011-01-11 07:24:21 -0500642struct mid_q_entry;
643
644/*
645 * This is the prototype for the mid callback function. When creating one,
646 * take special care to avoid deadlocks. Things to bear in mind:
647 *
Jeff Layton3c1105d2011-05-22 07:09:13 -0400648 * - it will be called by cifsd, with no locks held
649 * - the mid will be removed from any lists
Jeff Layton2b84a36c2011-01-11 07:24:21 -0500650 */
651typedef void (mid_callback_t)(struct mid_q_entry *mid);
652
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653/* one of these for every pending CIFS request to the server */
654struct mid_q_entry {
655 struct list_head qhead; /* mids waiting on reply from this server */
656 __u16 mid; /* multiplex id */
657 __u16 pid; /* process id */
658 __u32 sequence_number; /* for CIFS signing */
Steve French1047abc2005-10-11 19:58:06 -0700659 unsigned long when_alloc; /* when mid was created */
660#ifdef CONFIG_CIFS_STATS2
661 unsigned long when_sent; /* time when smb send finished */
662 unsigned long when_received; /* when demux complete (taken off wire) */
663#endif
Jeff Layton2b84a36c2011-01-11 07:24:21 -0500664 mid_callback_t *callback; /* call completion callback */
665 void *callback_data; /* general purpose pointer for callback */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 struct smb_hdr *resp_buf; /* response buffer */
667 int midState; /* wish this were enum but can not pass to wait_event */
Steve Frenchc81156d2005-04-28 22:41:07 -0700668 __u8 command; /* smb command code */
Steve French4b18f2a2008-04-29 00:06:05 +0000669 bool largeBuf:1; /* if valid response, is pointer to large buf */
670 bool multiRsp:1; /* multiple trans2 responses for one request */
671 bool multiEnd:1; /* both received */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672};
673
674struct oplock_q_entry {
675 struct list_head qhead;
Steve Frenchd38d8c72007-06-28 19:44:13 +0000676 struct inode *pinode;
677 struct cifsTconInfo *tcon;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 __u16 netfid;
679};
680
Steve Frenchff5dbd92005-08-24 17:10:36 -0700681/* for pending dnotify requests */
682struct dir_notify_req {
Steve French13cd4b72010-10-07 18:46:32 +0000683 struct list_head lhead;
684 __le16 Pid;
685 __le16 PidHigh;
686 __u16 Mid;
687 __u16 Tid;
688 __u16 Uid;
689 __u16 netfid;
690 __u32 filter; /* CompletionFilter (for multishot) */
691 int multishot;
692 struct file *pfile;
Steve Frenchff5dbd92005-08-24 17:10:36 -0700693};
694
Steve French366781c2008-01-25 10:12:41 +0000695struct dfs_info3_param {
696 int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/
Igor Mammedov8aad0182008-02-15 18:21:49 +0000697 int path_consumed;
Steve French366781c2008-01-25 10:12:41 +0000698 int server_type;
699 int ref_flag;
700 char *path_name;
701 char *node_name;
702};
703
Jeff Laytoncc0bad72009-06-25 00:56:52 -0400704/*
705 * common struct for holding inode info when searching for or updating an
706 * inode with new info
707 */
708
709#define CIFS_FATTR_DFS_REFERRAL 0x1
Jeff Layton0b8f18e2009-07-09 01:46:37 -0400710#define CIFS_FATTR_DELETE_PENDING 0x2
711#define CIFS_FATTR_NEED_REVAL 0x4
Jeff Layton3d694382010-05-11 14:59:55 -0400712#define CIFS_FATTR_INO_COLLISION 0x8
Jeff Laytoncc0bad72009-06-25 00:56:52 -0400713
714struct cifs_fattr {
715 u32 cf_flags;
716 u32 cf_cifsattrs;
717 u64 cf_uniqueid;
718 u64 cf_eof;
719 u64 cf_bytes;
Jeff Layton20054bd2011-01-07 11:30:27 -0500720 u64 cf_createtime;
Jeff Laytoncc0bad72009-06-25 00:56:52 -0400721 uid_t cf_uid;
722 gid_t cf_gid;
723 umode_t cf_mode;
724 dev_t cf_rdev;
725 unsigned int cf_nlink;
726 unsigned int cf_dtype;
727 struct timespec cf_atime;
728 struct timespec cf_mtime;
729 struct timespec cf_ctime;
730};
731
Steve French366781c2008-01-25 10:12:41 +0000732static inline void free_dfs_info_param(struct dfs_info3_param *param)
733{
734 if (param) {
735 kfree(param->path_name);
736 kfree(param->node_name);
737 kfree(param);
738 }
739}
740
741static inline void free_dfs_info_array(struct dfs_info3_param *param,
742 int number_of_items)
743{
744 int i;
745 if ((number_of_items == 0) || (param == NULL))
746 return;
747 for (i = 0; i < number_of_items; i++) {
748 kfree(param[i].path_name);
749 kfree(param[i].node_name);
750 }
751 kfree(param);
752}
753
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754#define MID_FREE 0
755#define MID_REQUEST_ALLOCATED 1
756#define MID_REQUEST_SUBMITTED 2
757#define MID_RESPONSE_RECEIVED 4
758#define MID_RETRY_NEEDED 8 /* session closed while this request out */
Jeff Layton71823ba2011-02-10 08:03:50 -0500759#define MID_RESPONSE_MALFORMED 0x10
Jeff Layton3c1105d2011-05-22 07:09:13 -0400760#define MID_SHUTDOWN 0x20
Steve Frenchec637e32005-12-12 20:53:18 -0800761
762/* Types of response buffer returned from SendReceive2 */
763#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
764#define CIFS_SMALL_BUFFER 1
765#define CIFS_LARGE_BUFFER 2
766#define CIFS_IOVEC 4 /* array of response buffers */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767
Steve French133672e2007-11-13 22:41:37 +0000768/* Type of Request to SendReceive2 */
Jeff Layton77499812011-01-11 07:24:23 -0500769#define CIFS_BLOCKING_OP 1 /* operation can block */
770#define CIFS_ASYNC_OP 2 /* do not wait for response */
771#define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */
Steve French133672e2007-11-13 22:41:37 +0000772#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */
773#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */
774#define CIFS_NO_RESP 0x040 /* no response buffer required */
775
Steve French39798772006-05-31 22:40:51 +0000776/* Security Flags: indicate type of session setup needed */
777#define CIFSSEC_MAY_SIGN 0x00001
778#define CIFSSEC_MAY_NTLM 0x00002
779#define CIFSSEC_MAY_NTLMV2 0x00004
780#define CIFSSEC_MAY_KRB5 0x00008
781#ifdef CONFIG_CIFS_WEAK_PW_HASH
782#define CIFSSEC_MAY_LANMAN 0x00010
783#define CIFSSEC_MAY_PLNTXT 0x00020
Steve French516897a2007-10-12 19:24:06 +0000784#else
785#define CIFSSEC_MAY_LANMAN 0
786#define CIFSSEC_MAY_PLNTXT 0
Steve French39798772006-05-31 22:40:51 +0000787#endif /* weak passwords */
788#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */
Steve Frenchac683922009-05-06 04:16:04 +0000789#define CIFSSEC_MAY_NTLMSSP 0x00080 /* raw ntlmssp with ntlmv2 */
Steve French5815449d2006-02-14 01:36:20 +0000790
Steve French39798772006-05-31 22:40:51 +0000791#define CIFSSEC_MUST_SIGN 0x01001
792/* note that only one of the following can be set so the
793result of setting MUST flags more than once will be to
794require use of the stronger protocol */
795#define CIFSSEC_MUST_NTLM 0x02002
796#define CIFSSEC_MUST_NTLMV2 0x04004
797#define CIFSSEC_MUST_KRB5 0x08008
798#ifdef CONFIG_CIFS_WEAK_PW_HASH
799#define CIFSSEC_MUST_LANMAN 0x10010
800#define CIFSSEC_MUST_PLNTXT 0x20020
Jeff Layton0d3a01f2007-10-16 17:32:19 +0000801#ifdef CONFIG_CIFS_UPCALL
Chuck Ebbert20d17522009-09-15 01:53:21 -0400802#define CIFSSEC_MASK 0xBF0BF /* allows weak security but also krb5 */
Steve Frenchd38d8c72007-06-28 19:44:13 +0000803#else
Chuck Ebbert20d17522009-09-15 01:53:21 -0400804#define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */
Steve French016ec752007-10-16 18:10:10 +0000805#endif /* UPCALL */
Jeff Layton0d3a01f2007-10-16 17:32:19 +0000806#else /* do not allow weak pw hash */
807#ifdef CONFIG_CIFS_UPCALL
Steve Frenchac683922009-05-06 04:16:04 +0000808#define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */
Jeff Layton0d3a01f2007-10-16 17:32:19 +0000809#else
Steve Frenchac683922009-05-06 04:16:04 +0000810#define CIFSSEC_MASK 0x87087 /* flags supported if no weak allowed */
Steve French016ec752007-10-16 18:10:10 +0000811#endif /* UPCALL */
Steve French39798772006-05-31 22:40:51 +0000812#endif /* WEAK_PW_HASH */
813#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */
Steve Frenchac683922009-05-06 04:16:04 +0000814#define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */
Steve French39798772006-05-31 22:40:51 +0000815
Shirish Pargaonkaref571ca2008-07-24 15:56:05 +0000816#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2)
817#define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
Steve Frenchac683922009-05-06 04:16:04 +0000818#define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819/*
820 *****************************************************************
821 * All constants go here
822 *****************************************************************
823 */
824
825#define UID_HASH (16)
826
827/*
828 * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the
829 * following to be declared.
830 */
831
832/****************************************************************************
833 * Locking notes. All updates to global variables and lists should be
834 * protected by spinlocks or semaphores.
835 *
836 * Spinlocks
837 * ---------
838 * GlobalMid_Lock protects:
839 * list operations on pending_mid_q and oplockQ
840 * updates to XID counters, multiplex id and SMB sequence numbers
Suresh Jayaraman6573e9b2010-10-18 23:52:18 +0530841 * cifs_file_list_lock protects:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842 * list operations on tcp and SMB session lists and tCon lists
843 * f_owner.lock protects certain per file struct operations
844 * mapping->page_lock protects certain per page operations
845 *
846 * Semaphores
847 * ----------
848 * sesSem operations on smb session
849 * tconSem operations on tree connection
Steve Frenchd38d8c72007-06-28 19:44:13 +0000850 * fh_sem file handle reconnection operations
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 *
852 ****************************************************************************/
853
854#ifdef DECLARE_GLOBALS_HERE
855#define GLOBAL_EXTERN
856#else
857#define GLOBAL_EXTERN extern
858#endif
859
Jeff Laytone7ddee92008-11-14 13:44:38 -0500860/*
861 * the list of TCP_Server_Info structures, ie each of the sockets
Steve Frenchfb396012008-11-13 20:04:07 +0000862 * connecting our client to a distinct server (ip address), is
Jeff Laytone7ddee92008-11-14 13:44:38 -0500863 * chained together by cifs_tcp_ses_list. The list of all our SMB
Steve Frenchfb396012008-11-13 20:04:07 +0000864 * sessions (and from that the tree connections) can be found
Jeff Laytone7ddee92008-11-14 13:44:38 -0500865 * by iterating over cifs_tcp_ses_list
866 */
867GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
868
Jeff Laytonf1987b42008-11-15 11:12:47 -0500869/*
870 * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
871 * tcp session, and the list of tcon's per smb session. It also protects
872 * the reference counters for the server, smb session, and tcon. Finally,
873 * changes to the tcon->tidStatus should be done while holding this lock.
874 */
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530875GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock;
Steve Frenchddb4cbf2008-11-20 20:00:44 +0000876
877/*
878 * This lock protects the cifs_file->llist and cifs_file->flist
879 * list operations, and updates to some flags (cifs_file->invalidHandle)
880 * It will be moved to either use the tcon->stat_lock or equivalent later.
881 * If cifs_tcp_ses_lock and the lock below are both needed to be held, then
882 * the cifs_tcp_ses_lock must be grabbed first and released last.
883 */
Jeff Layton44772882010-10-15 15:34:03 -0400884GLOBAL_EXTERN spinlock_t cifs_file_list_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885
Steve French0eff0e22011-02-24 05:39:23 +0000886#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
Steve French99ee4db2007-02-27 05:35:17 +0000887/* Outstanding dir notify requests */
888GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
889/* DirNotify response queue */
890GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
Steve French0eff0e22011-02-24 05:39:23 +0000891#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
Steve Frenchff5dbd92005-08-24 17:10:36 -0700892
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893/*
894 * Global transaction id (XID) information
895 */
896GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */
Steve French254e55e2006-06-04 05:53:15 +0000897GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */
Steve French254e55e2006-06-04 05:53:15 +0000899GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */
900 /* on midQ entries */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901/*
902 * Global counters, updated atomically
903 */
904GLOBAL_EXTERN atomic_t sesInfoAllocCount;
905GLOBAL_EXTERN atomic_t tconInfoAllocCount;
906GLOBAL_EXTERN atomic_t tcpSesAllocCount;
907GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
908GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
909
Steve Frenchaaa9bbe2008-05-23 17:38:32 +0000910/* Various Debug counters */
Steve French4498eed52005-12-03 13:58:57 -0800911GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
912#ifdef CONFIG_CIFS_STATS2
913GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
914GLOBAL_EXTERN atomic_t totSmBufAllocCount;
915#endif
916GLOBAL_EXTERN atomic_t smBufAllocCount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917GLOBAL_EXTERN atomic_t midCount;
918
919/* Misc globals */
Steve French254e55e2006-06-04 05:53:15 +0000920GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 to be established on existing mount if we
Steve Frenchd38d8c72007-06-28 19:44:13 +0000922 have the uid/password or Kerberos credential
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 or equivalent for current user */
924GLOBAL_EXTERN unsigned int oplockEnabled;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925GLOBAL_EXTERN unsigned int lookupCacheEnabled;
Jeff Layton04912d62010-04-24 07:57:45 -0400926GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 with more secure ntlmssp2 challenge/resp */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
930GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */
931GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
932GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */
933GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
934
Steve Frenchfda35942011-01-20 18:06:34 +0000935/* reconnect after this many failed echo attempts */
936GLOBAL_EXTERN unsigned short echo_retries;
937
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -0500938GLOBAL_EXTERN struct rb_root uidtree;
939GLOBAL_EXTERN struct rb_root gidtree;
940GLOBAL_EXTERN spinlock_t siduidlock;
941GLOBAL_EXTERN spinlock_t sidgidlock;
942
Tejun Heo9b646972010-07-20 22:09:02 +0200943void cifs_oplock_break(struct work_struct *work);
944void cifs_oplock_break_get(struct cifsFileInfo *cfile);
945void cifs_oplock_break_put(struct cifsFileInfo *cfile);
Linus Torvalds3b7433b2010-08-07 12:42:58 -0700946
Jeff Layton3bc303c2009-09-21 06:47:50 -0400947extern const struct slow_work_ops cifs_oplock_break_ops;
Suresh Jayaramanabd2e442010-06-22 20:52:50 +0530948
949#endif /* _CIFS_GLOB_H */