fs/cifs/cifsproto.h

   1 /*
   2  *   fs/cifs/cifsproto.h
   3  *
   4  *   Copyright (c) International Business Machines  Corp., 2002,2008
   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  *   You should have received a copy of the GNU Lesser General Public License
  18  *   along with this library; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21 #ifndef _CIFSPROTO_H
  22 #define _CIFSPROTO_H
  23 #include <linux/nls.h>
  24
  25 struct statfs;
  26 struct smb_vol;
  27
  28 /*
  29  *****************************************************************
  30  * All Prototypes
  31  *****************************************************************
  32  */
  33
  34 extern struct smb_hdr *cifs_buf_get(void);
  35 extern void cifs_buf_release(void *);
  36 extern struct smb_hdr *cifs_small_buf_get(void);
  37 extern void cifs_small_buf_release(void *);
  38 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
  39                         unsigned int /* length */);
  40 extern unsigned int _GetXid(void);
  41 extern void _FreeXid(unsigned int);
  42 #define GetXid()                                                \
  43 ({                                                              \
  44         int __xid = (int)_GetXid();                             \
  45         cFYI(1, "CIFS VFS: in %s as Xid: %d with uid: %d",      \
  46              __func__, __xid, current_fsuid());                 \
  47         __xid;                                                  \
  48 })
  49
  50 #define FreeXid(curr_xid)                                       \
  51 do {                                                            \
  52         _FreeXid(curr_xid);                                     \
  53         cFYI(1, "CIFS VFS: leaving %s (xid = %d) rc = %d",      \
  54              __func__, curr_xid, (int)rc);                      \
  55 } while (0)
  56 extern int init_cifs_idmap(void);
  57 extern void exit_cifs_idmap(void);
  58 extern void cifs_destroy_idmaptrees(void);
  59 extern char *build_path_from_dentry(struct dentry *);
  60 extern char *cifs_build_path_to_root(struct smb_vol *vol,
  61                                      struct cifs_sb_info *cifs_sb,
  62                                      struct cifs_tcon *tcon);
  63 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
  64 extern char *cifs_compose_mount_options(const char *sb_mountdata,
  65                 const char *fullpath, const struct dfs_info3_param *ref,
  66                 char **devname);
  67 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
  68 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
  69                                         struct TCP_Server_Info *server);
  70 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
  71 extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
  72                            unsigned int nvec, mid_callback_t *callback,
  73                            void *cbdata, bool ignore_pend);
  74 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
  75                         struct smb_hdr * /* input */ ,
  76                         struct smb_hdr * /* out */ ,
  77                         int * /* bytes returned */ , const int long_op);
  78 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
  79                         struct smb_hdr *in_buf, int flags);
  80 extern int cifs_check_receive(struct mid_q_entry *mid,
  81                         struct TCP_Server_Info *server, bool log_error);
  82 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
  83                         struct kvec *, int /* nvec to send */,
  84                         int * /* type of buf returned */ , const int flags);
  85 extern int SendReceiveBlockingLock(const unsigned int xid,
  86                         struct cifs_tcon *ptcon,
  87                         struct smb_hdr *in_buf ,
  88                         struct smb_hdr *out_buf,
  89                         int *bytes_returned);
  90 extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
  91 extern bool is_valid_oplock_break(struct smb_hdr *smb,
  92                                   struct TCP_Server_Info *);
  93 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
  94 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
  95                             unsigned int bytes_written);
  96 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
  97 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
  98 extern unsigned int smbCalcSize(struct smb_hdr *ptr);
  99 extern int decode_negTokenInit(unsigned char *security_blob, int length,
 100                         struct TCP_Server_Info *server);
 101 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
 102 extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 103 extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
 104                                 const unsigned short int port);
 105 extern int map_smb_to_linux_error(struct smb_hdr *smb, bool logErr);
 106 extern void header_assemble(struct smb_hdr *, char /* command */ ,
 107                             const struct cifs_tcon *, int /* length of
 108                             fixed section (word count) in two byte units */);
 109 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 110                                 struct cifs_ses *ses,
 111                                 void **request_buf);
 112 extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
 113                              const struct nls_table *nls_cp);
 114 extern __u16 GetNextMid(struct TCP_Server_Info *server);
 115 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 116 extern u64 cifs_UnixTimeToNT(struct timespec);
 117 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 118                                       int offset);
 119 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 120
 121 extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
 122                                 struct file *file, struct tcon_link *tlink,
 123                                 __u32 oplock);
 124 extern int cifs_posix_open(char *full_path, struct inode **pinode,
 125                                 struct super_block *sb,
 126                                 int mode, unsigned int f_flags,
 127                                 __u32 *poplock, __u16 *pnetfid, int xid);
 128 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 129 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 130                                      FILE_UNIX_BASIC_INFO *info,
 131                                      struct cifs_sb_info *cifs_sb);
 132 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 133 extern struct inode *cifs_iget(struct super_block *sb,
 134                                struct cifs_fattr *fattr);
 135
 136 extern int cifs_get_file_info(struct file *filp);
 137 extern int cifs_get_inode_info(struct inode **pinode,
 138                         const unsigned char *search_path,
 139                         FILE_ALL_INFO *pfile_info,
 140                         struct super_block *sb, int xid, const __u16 *pfid);
 141 extern int cifs_get_file_info_unix(struct file *filp);
 142 extern int cifs_get_inode_info_unix(struct inode **pinode,
 143                         const unsigned char *search_path,
 144                         struct super_block *sb, int xid);
 145 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 146                               struct cifs_fattr *fattr, struct inode *inode,
 147                               const char *path, const __u16 *pfid);
 148 extern int mode_to_cifs_acl(struct inode *inode, const char *path, __u64);
 149 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 150                                         const char *, u32 *);
 151 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 152                                 const char *);
 153
 154 extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 155                                struct cifs_sb_info *cifs_sb);
 156 extern int cifs_match_super(struct super_block *, void *);
 157 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
 158 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
 159                                             const char *devname);
 160 extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *);
 161 extern void cifs_umount(struct cifs_sb_info *);
 162 extern void cifs_dfs_release_automount_timer(void);
 163 void cifs_proc_init(void);
 164 void cifs_proc_clean(void);
 165
 166 extern int cifs_negotiate_protocol(unsigned int xid,
 167                                   struct cifs_ses *ses);
 168 extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
 169                         struct nls_table *nls_info);
 170 extern int CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses);
 171
 172 extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses,
 173                         const char *tree, struct cifs_tcon *tcon,
 174                         const struct nls_table *);
 175
 176 extern int CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
 177                 const char *searchName, const struct nls_table *nls_codepage,
 178                 __u16 *searchHandle, struct cifs_search_info *psrch_inf,
 179                 int map, const char dirsep);
 180
 181 extern int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
 182                 __u16 searchHandle, struct cifs_search_info *psrch_inf);
 183
 184 extern int CIFSFindClose(const int, struct cifs_tcon *tcon,
 185                         const __u16 search_handle);
 186
 187 extern int CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,
 188                         u16 netfid, FILE_ALL_INFO *pFindData);
 189 extern int CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,
 190                         const unsigned char *searchName,
 191                         FILE_ALL_INFO *findData,
 192                         int legacy /* whether to use old info level */,
 193                         const struct nls_table *nls_codepage, int remap);
 194 extern int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,
 195                         const unsigned char *searchName,
 196                         FILE_ALL_INFO *findData,
 197                         const struct nls_table *nls_codepage, int remap);
 198
 199 extern int CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,
 200                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 201 extern int CIFSSMBUnixQPathInfo(const int xid,
 202                         struct cifs_tcon *tcon,
 203                         const unsigned char *searchName,
 204                         FILE_UNIX_BASIC_INFO *pFindData,
 205                         const struct nls_table *nls_codepage, int remap);
 206
 207 extern int CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,
 208                         const unsigned char *searchName,
 209                         struct dfs_info3_param **target_nodes,
 210                         unsigned int *number_of_nodes_in_array,
 211                         const struct nls_table *nls_codepage, int remap);
 212
 213 extern int get_dfs_path(int xid, struct cifs_ses *pSesInfo,
 214                         const char *old_path,
 215                         const struct nls_table *nls_codepage,
 216                         unsigned int *pnum_referrals,
 217                         struct dfs_info3_param **preferrals,
 218                         int remap);
 219 extern void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
 220                                  struct cifs_sb_info *cifs_sb,
 221                                  struct smb_vol *vol);
 222 extern int CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon,
 223                         struct kstatfs *FSData);
 224 extern int SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon,
 225                         struct kstatfs *FSData);
 226 extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon,
 227                         __u64 cap);
 228
 229 extern int CIFSSMBQFSAttributeInfo(const int xid,
 230                         struct cifs_tcon *tcon);
 231 extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon);
 232 extern int CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon);
 233 extern int CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,
 234                         struct kstatfs *FSData);
 235
 236 extern int CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,
 237                         const char *fileName, const FILE_BASIC_INFO *data,
 238                         const struct nls_table *nls_codepage,
 239                         int remap_special_chars);
 240 extern int CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,
 241                         const FILE_BASIC_INFO *data, __u16 fid,
 242                         __u32 pid_of_opener);
 243 extern int CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,
 244                         bool delete_file, __u16 fid, __u32 pid_of_opener);
 245 #if 0
 246 extern int CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon,
 247                         char *fileName, __u16 dos_attributes,
 248                         const struct nls_table *nls_codepage);
 249 #endif /* possibly unneeded function */
 250 extern int CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon,
 251                         const char *fileName, __u64 size,
 252                         bool setAllocationSizeFlag,
 253                         const struct nls_table *nls_codepage,
 254                         int remap_special_chars);
 255 extern int CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon,
 256                          __u64 size, __u16 fileHandle, __u32 opener_pid,
 257                         bool AllocSizeFlag);
 258
 259 struct cifs_unix_set_info_args {
 260         __u64   ctime;
 261         __u64   atime;
 262         __u64   mtime;
 263         __u64   mode;
 264         __u64   uid;
 265         __u64   gid;
 266         dev_t   device;
 267 };
 268
 269 extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,
 270                                   const struct cifs_unix_set_info_args *args,
 271                                   u16 fid, u32 pid_of_opener);
 272
 273 extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *pTcon,
 274                         char *fileName,
 275                         const struct cifs_unix_set_info_args *args,
 276                         const struct nls_table *nls_codepage,
 277                         int remap_special_chars);
 278
 279 extern int CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,
 280                         const char *newName,
 281                         const struct nls_table *nls_codepage,
 282                         int remap_special_chars);
 283 extern int CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon,
 284                         const char *name, const struct nls_table *nls_codepage,
 285                         int remap_special_chars);
 286 extern int CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon,
 287                         const char *name, __u16 type,
 288                         const struct nls_table *nls_codepage,
 289                         int remap_special_chars);
 290 extern int CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon,
 291                         const char *name,
 292                         const struct nls_table *nls_codepage,
 293                         int remap_special_chars);
 294 extern int CIFSSMBRename(const int xid, struct cifs_tcon *tcon,
 295                         const char *fromName, const char *toName,
 296                         const struct nls_table *nls_codepage,
 297                         int remap_special_chars);
 298 extern int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,
 299                         int netfid, const char *target_name,
 300                         const struct nls_table *nls_codepage,
 301                         int remap_special_chars);
 302 extern int CIFSCreateHardLink(const int xid,
 303                         struct cifs_tcon *tcon,
 304                         const char *fromName, const char *toName,
 305                         const struct nls_table *nls_codepage,
 306                         int remap_special_chars);
 307 extern int CIFSUnixCreateHardLink(const int xid,
 308                         struct cifs_tcon *tcon,
 309                         const char *fromName, const char *toName,
 310                         const struct nls_table *nls_codepage,
 311                         int remap_special_chars);
 312 extern int CIFSUnixCreateSymLink(const int xid,
 313                         struct cifs_tcon *tcon,
 314                         const char *fromName, const char *toName,
 315                         const struct nls_table *nls_codepage);
 316 extern int CIFSSMBUnixQuerySymLink(const int xid,
 317                         struct cifs_tcon *tcon,
 318                         const unsigned char *searchName, char **syminfo,
 319                         const struct nls_table *nls_codepage);
 320 #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
 321 extern int CIFSSMBQueryReparseLinkInfo(const int xid,
 322                         struct cifs_tcon *tcon,
 323                         const unsigned char *searchName,
 324                         char *symlinkinfo, const int buflen, __u16 fid,
 325                         const struct nls_table *nls_codepage);
 326 #endif /* temporarily unused until cifs_symlink fixed */
 327 extern int CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,
 328                         const char *fileName, const int disposition,
 329                         const int access_flags, const int omode,
 330                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 331                         const struct nls_table *nls_codepage, int remap);
 332 extern int SMBLegacyOpen(const int xid, struct cifs_tcon *tcon,
 333                         const char *fileName, const int disposition,
 334                         const int access_flags, const int omode,
 335                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 336                         const struct nls_table *nls_codepage, int remap);
 337 extern int CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon,
 338                         u32 posix_flags, __u64 mode, __u16 *netfid,
 339                         FILE_UNIX_BASIC_INFO *pRetData,
 340                         __u32 *pOplock, const char *name,
 341                         const struct nls_table *nls_codepage, int remap);
 342 extern int CIFSSMBClose(const int xid, struct cifs_tcon *tcon,
 343                         const int smb_file_id);
 344
 345 extern int CIFSSMBFlush(const int xid, struct cifs_tcon *tcon,
 346                         const int smb_file_id);
 347
 348 extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms,
 349                         unsigned int *nbytes, char **buf,
 350                         int *return_buf_type);
 351 extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
 352                         unsigned int *nbytes, const char *buf,
 353                         const char __user *ubuf, const int long_op);
 354 extern int CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
 355                         unsigned int *nbytes, struct kvec *iov, const int nvec,
 356                         const int long_op);
 357 extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
 358                         const unsigned char *searchName, __u64 *inode_number,
 359                         const struct nls_table *nls_codepage,
 360                         int remap_special_chars);
 361
 362 extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
 363                         const __u16 netfid, const __u64 len,
 364                         const __u64 offset, const __u32 numUnlock,
 365                         const __u32 numLock, const __u8 lockType,
 366                         const bool waitFlag, const __u8 oplock_level);
 367 extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
 368                         const __u16 smb_file_id, const int get_flag,
 369                         const __u64 len, struct file_lock *,
 370                         const __u16 lock_type, const bool waitFlag);
 371 extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);
 372 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 373 extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses);
 374
 375 extern struct cifs_ses *sesInfoAlloc(void);
 376 extern void sesInfoFree(struct cifs_ses *);
 377 extern struct cifs_tcon *tconInfoAlloc(void);
 378 extern void tconInfoFree(struct cifs_tcon *);
 379
 380 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 381 extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 382                           __u32 *);
 383 extern int cifs_verify_signature(struct smb_hdr *,
 384                                  struct TCP_Server_Info *server,
 385                                 __u32 expected_sequence_number);
 386 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *);
 387 extern int setup_ntlm_response(struct cifs_ses *);
 388 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 389 extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
 390 extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
 391 extern int calc_seckey(struct cifs_ses *);
 392
 393 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 394 extern int calc_lanman_hash(const char *password, const char *cryptkey,
 395                                 bool encrypt, char *lnm_session_key);
 396 #endif /* CIFS_WEAK_PW_HASH */
 397 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
 398 extern int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon,
 399                         const int notify_subdirs, const __u16 netfid,
 400                         __u32 filter, struct file *file, int multishot,
 401                         const struct nls_table *nls_codepage);
 402 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
 403 extern int CIFSSMBCopy(int xid,
 404                         struct cifs_tcon *source_tcon,
 405                         const char *fromName,
 406                         const __u16 target_tid,
 407                         const char *toName, const int flags,
 408                         const struct nls_table *nls_codepage,
 409                         int remap_special_chars);
 410 extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,
 411                         const unsigned char *searchName,
 412                         const unsigned char *ea_name, char *EAData,
 413                         size_t bufsize, const struct nls_table *nls_codepage,
 414                         int remap_special_chars);
 415 extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon,
 416                 const char *fileName, const char *ea_name,
 417                 const void *ea_value, const __u16 ea_value_len,
 418                 const struct nls_table *nls_codepage, int remap_special_chars);
 419 extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon,
 420                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 421 extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16,
 422                         struct cifs_ntsd *, __u32);
 423 extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
 424                 const unsigned char *searchName,
 425                 char *acl_inf, const int buflen, const int acl_type,
 426                 const struct nls_table *nls_codepage, int remap_special_chars);
 427 extern int CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,
 428                 const unsigned char *fileName,
 429                 const char *local_acl, const int buflen, const int acl_type,
 430                 const struct nls_table *nls_codepage, int remap_special_chars);
 431 extern int CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,
 432                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 433 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 434 extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
 435 extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
 436                 const unsigned char *path,
 437                 struct cifs_sb_info *cifs_sb, int xid);
 438 extern int mdfour(unsigned char *, unsigned char *, int);
 439 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16);
 440 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 441                         unsigned char *p24);
 442
 443 /* asynchronous write support */
 444 struct cifs_writedata {
 445         struct kref                     refcount;
 446         enum writeback_sync_modes       sync_mode;
 447         struct work_struct              work;
 448         struct cifsFileInfo             *cfile;
 449         __u64                           offset;
 450         unsigned int                    bytes;
 451         int                             result;
 452         unsigned int                    nr_pages;
 453         struct page                     *pages[1];
 454 };
 455
 456 int cifs_async_writev(struct cifs_writedata *wdata);
 457 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages);
 458 void cifs_writedata_release(struct kref *refcount);
 459
 460 #endif                  /* _CIFSPROTO_H */