Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/cifsglob.h |
| 3 | * |
Steve French | 5815449d | 2006-02-14 01:36:20 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2006 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Lesser General Public License as published |
| 9 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | * the GNU Lesser General Public License for more details. |
| 16 | * |
| 17 | */ |
| 18 | #include <linux/in.h> |
| 19 | #include <linux/in6.h> |
| 20 | #include "cifs_fs_sb.h" |
| 21 | /* |
| 22 | * The sizes of various internal tables and strings |
| 23 | */ |
| 24 | #define MAX_UID_INFO 16 |
| 25 | #define MAX_SES_INFO 2 |
| 26 | #define MAX_TCON_INFO 4 |
| 27 | |
| 28 | #define MAX_TREE_SIZE 2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1 |
| 29 | #define MAX_SERVER_SIZE 15 |
| 30 | #define MAX_SHARE_SIZE 64 /* used to be 20 - this should still be enough */ |
| 31 | #define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null |
| 32 | termination then *2 for unicode versions */ |
| 33 | #define MAX_PASSWORD_SIZE 16 |
| 34 | |
| 35 | #define CIFS_MIN_RCV_POOL 4 |
| 36 | |
| 37 | /* |
| 38 | * MAX_REQ is the maximum number of requests that WE will send |
| 39 | * on one socket concurently. It also matches the most common |
| 40 | * value of max multiplex returned by servers. We may |
| 41 | * eventually want to use the negotiated value (in case |
| 42 | * future servers can handle more) when we are more confident that |
| 43 | * we will not have problems oveloading the socket with pending |
| 44 | * write data. |
| 45 | */ |
| 46 | #define CIFS_MAX_REQ 50 |
| 47 | |
| 48 | #define SERVER_NAME_LENGTH 15 |
| 49 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
| 50 | |
| 51 | /* used to define string lengths for reversing unicode strings */ |
| 52 | /* (256+1)*2 = 514 */ |
| 53 | /* (max path length + 1 for null) * 2 for unicode */ |
| 54 | #define MAX_NAME 514 |
| 55 | |
| 56 | #include "cifspdu.h" |
| 57 | |
| 58 | #ifndef FALSE |
| 59 | #define FALSE 0 |
| 60 | #endif |
| 61 | |
| 62 | #ifndef TRUE |
| 63 | #define TRUE 1 |
| 64 | #endif |
| 65 | |
| 66 | #ifndef XATTR_DOS_ATTRIB |
| 67 | #define XATTR_DOS_ATTRIB "user.DOSATTRIB" |
| 68 | #endif |
| 69 | |
| 70 | /* |
| 71 | * This information is kept on every Server we know about. |
| 72 | * |
| 73 | * Some things to note: |
| 74 | * |
| 75 | */ |
| 76 | #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) |
| 77 | |
| 78 | /* |
| 79 | * CIFS vfs client Status information (based on what we know.) |
| 80 | */ |
| 81 | |
| 82 | /* associated with each tcp and smb session */ |
| 83 | enum statusEnum { |
| 84 | CifsNew = 0, |
| 85 | CifsGood, |
| 86 | CifsExiting, |
| 87 | CifsNeedReconnect |
| 88 | }; |
| 89 | |
| 90 | enum securityEnum { |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 91 | LANMAN = 0, /* Legacy LANMAN auth */ |
| 92 | NTLM, /* Legacy NTLM012 auth with NTLM hash */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ |
| 94 | RawNTLMSSP, /* NTLMSSP without SPNEGO */ |
| 95 | NTLMSSP, /* NTLMSSP via SPNEGO */ |
| 96 | Kerberos /* Kerberos via SPNEGO */ |
| 97 | }; |
| 98 | |
| 99 | enum protocolEnum { |
| 100 | IPV4 = 0, |
| 101 | IPV6, |
| 102 | SCTP |
| 103 | /* Netbios frames protocol not supported at this time */ |
| 104 | }; |
| 105 | |
| 106 | /* |
| 107 | ***************************************************************** |
| 108 | * Except the CIFS PDUs themselves all the |
| 109 | * globally interesting structs should go here |
| 110 | ***************************************************************** |
| 111 | */ |
| 112 | |
| 113 | struct TCP_Server_Info { |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 114 | /* 15 character server name + 0x20 16th byte indicating type = srv */ |
| 115 | char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL]; |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 116 | char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | struct socket *ssocket; |
| 118 | union { |
| 119 | struct sockaddr_in sockAddr; |
| 120 | struct sockaddr_in6 sockAddr6; |
| 121 | } addr; |
| 122 | wait_queue_head_t response_q; |
| 123 | wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ |
| 124 | struct list_head pending_mid_q; |
| 125 | void *Server_NlsInfo; /* BB - placeholder for future NLS info */ |
| 126 | unsigned short server_codepage; /* codepage for the server */ |
Steve French | 131afd0 | 2005-10-07 09:51:05 -0700 | [diff] [blame] | 127 | unsigned long ip_address; /* IP addr for the server if known */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | enum protocolEnum protocolType; |
| 129 | char versionMajor; |
| 130 | char versionMinor; |
| 131 | unsigned svlocal:1; /* local server or remote */ |
| 132 | atomic_t socketUseCount; /* number of open cifs sessions on socket */ |
| 133 | atomic_t inFlight; /* number of requests on the wire to server */ |
Steve French | 131afd0 | 2005-10-07 09:51:05 -0700 | [diff] [blame] | 134 | #ifdef CONFIG_CIFS_STATS2 |
| 135 | atomic_t inSend; /* requests trying to send */ |
| 136 | atomic_t num_waiters; /* blocked waiting to get in sendrecv */ |
| 137 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | enum statusEnum tcpStatus; /* what we think the status is */ |
| 139 | struct semaphore tcpSem; |
| 140 | struct task_struct *tsk; |
| 141 | char server_GUID[16]; |
| 142 | char secMode; |
| 143 | enum securityEnum secType; |
| 144 | unsigned int maxReq; /* Clients should submit no more */ |
| 145 | /* than maxReq distinct unanswered SMBs to the server when using */ |
| 146 | /* multiplexed reads or writes */ |
| 147 | unsigned int maxBuf; /* maxBuf specifies the maximum */ |
| 148 | /* message size the server can send or receive for non-raw SMBs */ |
| 149 | unsigned int maxRw; /* maxRw specifies the maximum */ |
| 150 | /* message size the server can send or receive for */ |
| 151 | /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ |
| 152 | char sessid[4]; /* unique token id for this session */ |
| 153 | /* (returned on Negotiate */ |
| 154 | int capabilities; /* allow selective disabling of caps by smb sess */ |
| 155 | __u16 timeZone; |
Steve French | 1982c34 | 2005-08-17 12:38:22 -0700 | [diff] [blame] | 156 | __u16 CurrentMid; /* multiplex id - rotating counter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | char cryptKey[CIFS_CRYPTO_KEY_SIZE]; |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 158 | /* 16th byte of RFC1001 workstation name is always null */ |
| 159 | char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL]; |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 160 | __u32 sequence_number; /* needed for CIFS PDU signature */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 161 | char mac_signing_key[CIFS_SESS_KEY_SIZE + 16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | }; |
| 163 | |
| 164 | /* |
| 165 | * The following is our shortcut to user information. We surface the uid, |
| 166 | * and name. We always get the password on the fly in case it |
| 167 | * has changed. We also hang a list of sessions owned by this user off here. |
| 168 | */ |
| 169 | struct cifsUidInfo { |
| 170 | struct list_head userList; |
| 171 | struct list_head sessionList; /* SMB sessions for this user */ |
| 172 | uid_t linux_uid; |
| 173 | char user[MAX_USERNAME_SIZE + 1]; /* ascii name of user */ |
| 174 | /* BB may need ptr or callback for PAM or WinBind info */ |
| 175 | }; |
| 176 | |
| 177 | /* |
| 178 | * Session structure. One of these for each uid session with a particular host |
| 179 | */ |
| 180 | struct cifsSesInfo { |
| 181 | struct list_head cifsSessionList; |
| 182 | struct semaphore sesSem; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 183 | #if 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | struct cifsUidInfo *uidInfo; /* pointer to user info */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 185 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | struct TCP_Server_Info *server; /* pointer to server info */ |
| 187 | atomic_t inUse; /* # of mounts (tree connections) on this ses */ |
| 188 | enum statusEnum status; |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 189 | unsigned overrideSecFlg; /* if non-zero override global sec flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | __u16 ipc_tid; /* special tid for connection to IPC share */ |
| 191 | __u16 flags; |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 192 | char *serverOS; /* name of operating system underlying server */ |
| 193 | char *serverNOS; /* name of network operating system of server */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | char *serverDomain; /* security realm of server */ |
| 195 | int Suid; /* remote smb uid */ |
| 196 | uid_t linux_uid; /* local Linux uid */ |
| 197 | int capabilities; |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 198 | char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for |
| 199 | TCP names - will ipv6 and sctp addresses fit? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | char userName[MAX_USERNAME_SIZE + 1]; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 201 | char * domainName; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | char * password; |
| 203 | }; |
| 204 | /* session flags */ |
| 205 | #define CIFS_SES_NT4 1 |
| 206 | |
| 207 | /* |
| 208 | * there is one of these for each connection to a resource on a particular |
| 209 | * session |
| 210 | */ |
| 211 | struct cifsTconInfo { |
| 212 | struct list_head cifsConnectionList; |
| 213 | struct list_head openFileList; |
| 214 | struct semaphore tconSem; |
| 215 | struct cifsSesInfo *ses; /* pointer to session associated with */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 216 | char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | char *nativeFileSystem; |
| 218 | __u16 tid; /* The 2 byte tree id */ |
| 219 | __u16 Flags; /* optional support bits */ |
| 220 | enum statusEnum tidStatus; |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 221 | atomic_t useCount; /* how many explicit/implicit mounts to share */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | #ifdef CONFIG_CIFS_STATS |
| 223 | atomic_t num_smbs_sent; |
| 224 | atomic_t num_writes; |
| 225 | atomic_t num_reads; |
| 226 | atomic_t num_oplock_brks; |
| 227 | atomic_t num_opens; |
Steve French | a5a2b48 | 2005-08-20 21:42:53 -0700 | [diff] [blame] | 228 | atomic_t num_closes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | atomic_t num_deletes; |
| 230 | atomic_t num_mkdirs; |
| 231 | atomic_t num_rmdirs; |
| 232 | atomic_t num_renames; |
| 233 | atomic_t num_t2renames; |
Steve French | dfb7533 | 2005-06-22 17:13:47 -0700 | [diff] [blame] | 234 | atomic_t num_ffirst; |
| 235 | atomic_t num_fnext; |
| 236 | atomic_t num_fclose; |
Steve French | a5a2b48 | 2005-08-20 21:42:53 -0700 | [diff] [blame] | 237 | atomic_t num_hardlinks; |
| 238 | atomic_t num_symlinks; |
| 239 | atomic_t num_locks; |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 240 | atomic_t num_acl_get; |
| 241 | atomic_t num_acl_set; |
Steve French | a5a2b48 | 2005-08-20 21:42:53 -0700 | [diff] [blame] | 242 | #ifdef CONFIG_CIFS_STATS2 |
| 243 | unsigned long long time_writes; |
| 244 | unsigned long long time_reads; |
| 245 | unsigned long long time_opens; |
| 246 | unsigned long long time_deletes; |
| 247 | unsigned long long time_closes; |
| 248 | unsigned long long time_mkdirs; |
| 249 | unsigned long long time_rmdirs; |
| 250 | unsigned long long time_renames; |
| 251 | unsigned long long time_t2renames; |
| 252 | unsigned long long time_ffirst; |
| 253 | unsigned long long time_fnext; |
| 254 | unsigned long long time_fclose; |
| 255 | #endif /* CONFIG_CIFS_STATS2 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | __u64 bytes_read; |
| 257 | __u64 bytes_written; |
| 258 | spinlock_t stat_lock; |
Steve French | a5a2b48 | 2005-08-20 21:42:53 -0700 | [diff] [blame] | 259 | #endif /* CONFIG_CIFS_STATS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | FILE_SYSTEM_DEVICE_INFO fsDevInfo; |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 261 | FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | FILE_SYSTEM_UNIX_INFO fsUnixInfo; |
| 263 | unsigned retry:1; |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 264 | unsigned nocase:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | /* BB add field for back pointer to sb struct? */ |
| 266 | }; |
| 267 | |
| 268 | /* |
| 269 | * This info hangs off the cifsFileInfo structure. This is used to track |
| 270 | * byte stream locks on the file |
| 271 | */ |
| 272 | struct cifsLockInfo { |
| 273 | struct cifsLockInfo *next; |
| 274 | int start; |
| 275 | int length; |
| 276 | int type; |
| 277 | }; |
| 278 | |
| 279 | /* |
| 280 | * One of these for each open instance of a file |
| 281 | */ |
| 282 | struct cifs_search_info { |
| 283 | loff_t index_of_last_entry; |
| 284 | __u16 entries_in_buffer; |
| 285 | __u16 info_level; |
| 286 | __u32 resume_key; |
| 287 | char * ntwrk_buf_start; |
| 288 | char * srch_entries_start; |
| 289 | char * presume_name; |
| 290 | unsigned int resume_name_len; |
| 291 | unsigned endOfSearch:1; |
| 292 | unsigned emptyDir:1; |
| 293 | unsigned unicode:1; |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 294 | unsigned smallBuf:1; /* so we know which buf_release function to call */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | }; |
| 296 | |
| 297 | struct cifsFileInfo { |
| 298 | struct list_head tlist; /* pointer to next fid owned by tcon */ |
| 299 | struct list_head flist; /* next fid (file instance) for this inode */ |
| 300 | unsigned int uid; /* allows finding which FileInfo structure */ |
| 301 | __u32 pid; /* process id who opened file */ |
| 302 | __u16 netfid; /* file id from remote */ |
| 303 | /* BB add lock scope info here if needed */ ; |
| 304 | /* lock scope id (0 if none) */ |
| 305 | struct file * pfile; /* needed for writepage */ |
| 306 | struct inode * pInode; /* needed for oplock break */ |
| 307 | unsigned closePend:1; /* file is marked to close */ |
| 308 | unsigned invalidHandle:1; /* file closed via session abend */ |
Steve French | 23e7dd7 | 2005-10-20 13:44:56 -0700 | [diff] [blame] | 309 | atomic_t wrtPending; /* handle in use - defer close */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | struct semaphore fh_sem; /* prevents reopen race after dead ses*/ |
| 311 | char * search_resume_name; /* BB removeme BB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | struct cifs_search_info srch_inf; |
| 313 | }; |
| 314 | |
| 315 | /* |
| 316 | * One of these for each file inode |
| 317 | */ |
| 318 | |
| 319 | struct cifsInodeInfo { |
| 320 | struct list_head lockList; |
| 321 | /* BB add in lists for dirty pages - i.e. write caching info for oplock */ |
| 322 | struct list_head openFileList; |
| 323 | int write_behind_rc; |
| 324 | __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ |
| 325 | atomic_t inUse; /* num concurrent users (local openers cifs) of file*/ |
| 326 | unsigned long time; /* jiffies of last update/check of inode */ |
| 327 | unsigned clientCanCacheRead:1; /* read oplock */ |
| 328 | unsigned clientCanCacheAll:1; /* read and writebehind oplock */ |
| 329 | unsigned oplockPending:1; |
| 330 | struct inode vfs_inode; |
| 331 | }; |
| 332 | |
| 333 | static inline struct cifsInodeInfo * |
| 334 | CIFS_I(struct inode *inode) |
| 335 | { |
| 336 | return container_of(inode, struct cifsInodeInfo, vfs_inode); |
| 337 | } |
| 338 | |
| 339 | static inline struct cifs_sb_info * |
| 340 | CIFS_SB(struct super_block *sb) |
| 341 | { |
| 342 | return sb->s_fs_info; |
| 343 | } |
| 344 | |
Steve French | ab2f218 | 2005-09-15 20:44:50 -0700 | [diff] [blame] | 345 | static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 346 | { |
| 347 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
| 348 | return '/'; |
| 349 | else |
| 350 | return '\\'; |
| 351 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | |
Steve French | a454434 | 2005-08-24 13:59:35 -0700 | [diff] [blame] | 353 | #ifdef CONFIG_CIFS_STATS |
| 354 | #define cifs_stats_inc atomic_inc |
| 355 | |
| 356 | static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon, |
| 357 | unsigned int bytes) |
| 358 | { |
| 359 | if (bytes) { |
| 360 | spin_lock(&tcon->stat_lock); |
| 361 | tcon->bytes_written += bytes; |
| 362 | spin_unlock(&tcon->stat_lock); |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, |
| 367 | unsigned int bytes) |
| 368 | { |
| 369 | spin_lock(&tcon->stat_lock); |
| 370 | tcon->bytes_read += bytes; |
| 371 | spin_unlock(&tcon->stat_lock); |
| 372 | } |
| 373 | #else |
| 374 | |
| 375 | #define cifs_stats_inc(field) do {} while(0) |
| 376 | #define cifs_stats_bytes_written(tcon, bytes) do {} while(0) |
| 377 | #define cifs_stats_bytes_read(tcon, bytes) do {} while(0) |
| 378 | |
| 379 | #endif |
| 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | /* one of these for every pending CIFS request to the server */ |
| 382 | struct mid_q_entry { |
| 383 | struct list_head qhead; /* mids waiting on reply from this server */ |
| 384 | __u16 mid; /* multiplex id */ |
| 385 | __u16 pid; /* process id */ |
| 386 | __u32 sequence_number; /* for CIFS signing */ |
Steve French | 1047abc | 2005-10-11 19:58:06 -0700 | [diff] [blame] | 387 | unsigned long when_alloc; /* when mid was created */ |
| 388 | #ifdef CONFIG_CIFS_STATS2 |
| 389 | unsigned long when_sent; /* time when smb send finished */ |
| 390 | unsigned long when_received; /* when demux complete (taken off wire) */ |
| 391 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | struct cifsSesInfo *ses; /* smb was sent to this server */ |
| 393 | struct task_struct *tsk; /* task waiting for response */ |
| 394 | struct smb_hdr *resp_buf; /* response buffer */ |
| 395 | int midState; /* wish this were enum but can not pass to wait_event */ |
Steve French | c81156d | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 396 | __u8 command; /* smb command code */ |
Steve French | c81156d | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 397 | unsigned largeBuf:1; /* if valid response, is pointer to large buf */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 398 | unsigned multiRsp:1; /* multiple trans2 responses for one request */ |
| 399 | unsigned multiEnd:1; /* both received */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | }; |
| 401 | |
| 402 | struct oplock_q_entry { |
| 403 | struct list_head qhead; |
| 404 | struct inode * pinode; |
| 405 | struct cifsTconInfo * tcon; |
| 406 | __u16 netfid; |
| 407 | }; |
| 408 | |
Steve French | ff5dbd9 | 2005-08-24 17:10:36 -0700 | [diff] [blame] | 409 | /* for pending dnotify requests */ |
| 410 | struct dir_notify_req { |
| 411 | struct list_head lhead; |
| 412 | __le16 Pid; |
| 413 | __le16 PidHigh; |
| 414 | __u16 Mid; |
| 415 | __u16 Tid; |
| 416 | __u16 Uid; |
| 417 | __u16 netfid; |
| 418 | __u32 filter; /* CompletionFilter (for multishot) */ |
| 419 | int multishot; |
Steve French | e22cb8b | 2005-08-24 20:25:21 -0700 | [diff] [blame] | 420 | struct file * pfile; |
Steve French | ff5dbd9 | 2005-08-24 17:10:36 -0700 | [diff] [blame] | 421 | }; |
| 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | #define MID_FREE 0 |
| 424 | #define MID_REQUEST_ALLOCATED 1 |
| 425 | #define MID_REQUEST_SUBMITTED 2 |
| 426 | #define MID_RESPONSE_RECEIVED 4 |
| 427 | #define MID_RETRY_NEEDED 8 /* session closed while this request out */ |
| 428 | #define MID_NO_RESP_NEEDED 0x10 |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 429 | |
| 430 | /* Types of response buffer returned from SendReceive2 */ |
| 431 | #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ |
| 432 | #define CIFS_SMALL_BUFFER 1 |
| 433 | #define CIFS_LARGE_BUFFER 2 |
| 434 | #define CIFS_IOVEC 4 /* array of response buffers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 436 | /* Security Flags: indicate type of session setup needed */ |
| 437 | #define CIFSSEC_MAY_SIGN 0x00001 |
| 438 | #define CIFSSEC_MAY_NTLM 0x00002 |
| 439 | #define CIFSSEC_MAY_NTLMV2 0x00004 |
| 440 | #define CIFSSEC_MAY_KRB5 0x00008 |
| 441 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
| 442 | #define CIFSSEC_MAY_LANMAN 0x00010 |
| 443 | #define CIFSSEC_MAY_PLNTXT 0x00020 |
| 444 | #endif /* weak passwords */ |
| 445 | #define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */ |
Steve French | 5815449d | 2006-02-14 01:36:20 +0000 | [diff] [blame] | 446 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 447 | #define CIFSSEC_MUST_SIGN 0x01001 |
| 448 | /* note that only one of the following can be set so the |
| 449 | result of setting MUST flags more than once will be to |
| 450 | require use of the stronger protocol */ |
| 451 | #define CIFSSEC_MUST_NTLM 0x02002 |
| 452 | #define CIFSSEC_MUST_NTLMV2 0x04004 |
| 453 | #define CIFSSEC_MUST_KRB5 0x08008 |
| 454 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
| 455 | #define CIFSSEC_MUST_LANMAN 0x10010 |
| 456 | #define CIFSSEC_MUST_PLNTXT 0x20020 |
| 457 | #define CIFSSEC_MASK 0x37037 /* current flags supported if weak */ |
| 458 | #else |
| 459 | #define CIFSSEC_MASK 0x07007 /* flags supported if no weak config */ |
| 460 | #endif /* WEAK_PW_HASH */ |
| 461 | #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ |
| 462 | |
| 463 | #define CIFSSEC_DEF CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 |
| 464 | #define CIFSSEC_MAX CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | /* |
| 466 | ***************************************************************** |
| 467 | * All constants go here |
| 468 | ***************************************************************** |
| 469 | */ |
| 470 | |
| 471 | #define UID_HASH (16) |
| 472 | |
| 473 | /* |
| 474 | * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the |
| 475 | * following to be declared. |
| 476 | */ |
| 477 | |
| 478 | /**************************************************************************** |
| 479 | * Locking notes. All updates to global variables and lists should be |
| 480 | * protected by spinlocks or semaphores. |
| 481 | * |
| 482 | * Spinlocks |
| 483 | * --------- |
| 484 | * GlobalMid_Lock protects: |
| 485 | * list operations on pending_mid_q and oplockQ |
| 486 | * updates to XID counters, multiplex id and SMB sequence numbers |
| 487 | * GlobalSMBSesLock protects: |
| 488 | * list operations on tcp and SMB session lists and tCon lists |
| 489 | * f_owner.lock protects certain per file struct operations |
| 490 | * mapping->page_lock protects certain per page operations |
| 491 | * |
| 492 | * Semaphores |
| 493 | * ---------- |
| 494 | * sesSem operations on smb session |
| 495 | * tconSem operations on tree connection |
| 496 | * fh_sem file handle reconnection operations |
| 497 | * |
| 498 | ****************************************************************************/ |
| 499 | |
| 500 | #ifdef DECLARE_GLOBALS_HERE |
| 501 | #define GLOBAL_EXTERN |
| 502 | #else |
| 503 | #define GLOBAL_EXTERN extern |
| 504 | #endif |
| 505 | |
| 506 | /* |
| 507 | * The list of servers that did not respond with NT LM 0.12. |
| 508 | * This list helps improve performance and eliminate the messages indicating |
| 509 | * that we had a communications error talking to the server in this list. |
| 510 | */ |
| 511 | GLOBAL_EXTERN struct servers_not_supported *NotSuppList; /*@z4a */ |
| 512 | |
| 513 | /* |
| 514 | * The following is a hash table of all the users we know about. |
| 515 | */ |
| 516 | GLOBAL_EXTERN struct smbUidInfo *GlobalUidList[UID_HASH]; |
| 517 | |
| 518 | GLOBAL_EXTERN struct list_head GlobalServerList; /* BB not implemented yet */ |
| 519 | GLOBAL_EXTERN struct list_head GlobalSMBSessionList; |
| 520 | GLOBAL_EXTERN struct list_head GlobalTreeConnectionList; |
| 521 | GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */ |
| 522 | |
| 523 | GLOBAL_EXTERN struct list_head GlobalOplock_Q; |
| 524 | |
Steve French | ff5dbd9 | 2005-08-24 17:10:36 -0700 | [diff] [blame] | 525 | GLOBAL_EXTERN struct list_head GlobalDnotifyReqList; /* Outstanding dir notify requests */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 526 | GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;/* DirNotify response queue */ |
Steve French | ff5dbd9 | 2005-08-24 17:10:36 -0700 | [diff] [blame] | 527 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | /* |
| 529 | * Global transaction id (XID) information |
| 530 | */ |
| 531 | GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 532 | GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 534 | GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above & list operations */ |
| 535 | /* on midQ entries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | GLOBAL_EXTERN char Local_System_Name[15]; |
| 537 | |
| 538 | /* |
| 539 | * Global counters, updated atomically |
| 540 | */ |
| 541 | GLOBAL_EXTERN atomic_t sesInfoAllocCount; |
| 542 | GLOBAL_EXTERN atomic_t tconInfoAllocCount; |
| 543 | GLOBAL_EXTERN atomic_t tcpSesAllocCount; |
| 544 | GLOBAL_EXTERN atomic_t tcpSesReconnectCount; |
| 545 | GLOBAL_EXTERN atomic_t tconInfoReconnectCount; |
| 546 | |
| 547 | /* Various Debug counters to remove someday (BB) */ |
Steve French | 4498eed | 2005-12-03 13:58:57 -0800 | [diff] [blame] | 548 | GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ |
| 549 | #ifdef CONFIG_CIFS_STATS2 |
| 550 | GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ |
| 551 | GLOBAL_EXTERN atomic_t totSmBufAllocCount; |
| 552 | #endif |
| 553 | GLOBAL_EXTERN atomic_t smBufAllocCount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | GLOBAL_EXTERN atomic_t midCount; |
| 555 | |
| 556 | /* Misc globals */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 557 | GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | to be established on existing mount if we |
| 559 | have the uid/password or Kerberos credential |
| 560 | or equivalent for current user */ |
| 561 | GLOBAL_EXTERN unsigned int oplockEnabled; |
| 562 | GLOBAL_EXTERN unsigned int experimEnabled; |
| 563 | GLOBAL_EXTERN unsigned int lookupCacheEnabled; |
| 564 | GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent |
| 565 | with more secure ntlmssp2 challenge/resp */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 567 | GLOBAL_EXTERN unsigned int secFlags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/ |
| 569 | GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */ |
| 570 | GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ |
| 571 | GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ |
| 572 | GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ |
| 573 | |