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_receive_t *receive,
  73                            mid_callback_t *callback, void *cbdata,
  74                            bool ignore_pend);
  75 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
  76                         struct smb_hdr * /* input */ ,
  77                         struct smb_hdr * /* out */ ,
  78                         int * /* bytes returned */ , const int long_op);
  79 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
  80                         struct smb_hdr *in_buf, int flags);
  81 extern int cifs_check_receive(struct mid_q_entry *mid,
  82                         struct TCP_Server_Info *server, bool log_error);
  83 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
  84                         struct kvec *, int /* nvec to send */,
  85                         int * /* type of buf returned */ , const int flags);
  86 extern int SendReceiveBlockingLock(const unsigned int xid,
  87                         struct cifs_tcon *ptcon,
  88                         struct smb_hdr *in_buf ,
  89                         struct smb_hdr *out_buf,
  90                         int *bytes_returned);
  91 extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
  92 extern bool is_valid_oplock_break(struct smb_hdr *smb,
  93                                   struct TCP_Server_Info *);
  94 extern bool backup_cred(struct cifs_sb_info *);
  95 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
  96 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
  97                             unsigned int bytes_written);
  98 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
  99 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
 100 extern unsigned int smbCalcSize(struct smb_hdr *ptr);
 101 extern int decode_negTokenInit(unsigned char *security_blob, int length,
 102                         struct TCP_Server_Info *server);
 103 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
 104 extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 105 extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
 106                                 const unsigned short int port);
 107 extern int map_smb_to_linux_error(struct smb_hdr *smb, bool logErr);
 108 extern void header_assemble(struct smb_hdr *, char /* command */ ,
 109                             const struct cifs_tcon *, int /* length of
 110                             fixed section (word count) in two byte units */);
 111 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 112                                 struct cifs_ses *ses,
 113                                 void **request_buf);
 114 extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
 115                              const struct nls_table *nls_cp);
 116 extern __u16 GetNextMid(struct TCP_Server_Info *server);
 117 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 118 extern u64 cifs_UnixTimeToNT(struct timespec);
 119 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 120                                       int offset);
 121 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 122
 123 extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
 124                                 struct file *file, struct tcon_link *tlink,
 125                                 __u32 oplock);
 126 extern int cifs_posix_open(char *full_path, struct inode **pinode,
 127                                 struct super_block *sb,
 128                                 int mode, unsigned int f_flags,
 129                                 __u32 *poplock, __u16 *pnetfid, int xid);
 130 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 131 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 132                                      FILE_UNIX_BASIC_INFO *info,
 133                                      struct cifs_sb_info *cifs_sb);
 134 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 135 extern struct inode *cifs_iget(struct super_block *sb,
 136                                struct cifs_fattr *fattr);
 137
 138 extern int cifs_get_file_info(struct file *filp);
 139 extern int cifs_get_inode_info(struct inode **pinode,
 140                         const unsigned char *search_path,
 141                         FILE_ALL_INFO *pfile_info,
 142                         struct super_block *sb, int xid, const __u16 *pfid);
 143 extern int cifs_get_file_info_unix(struct file *filp);
 144 extern int cifs_get_inode_info_unix(struct inode **pinode,
 145                         const unsigned char *search_path,
 146                         struct super_block *sb, int xid);
 147 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 148                               struct cifs_fattr *fattr, struct inode *inode,
 149                               const char *path, const __u16 *pfid);
 150 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
 151                                         uid_t, gid_t);
 152 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 153                                         const char *, u32 *);
 154 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 155                                 const char *, int);
 156
 157 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
 158 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
 159                      unsigned int to_read);
 160 extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
 161                 struct kvec *iov_orig, unsigned int nr_segs,
 162                 unsigned int to_read);
 163 extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 164                                struct cifs_sb_info *cifs_sb);
 165 extern int cifs_match_super(struct super_block *, void *);
 166 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
 167 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
 168                                             const char *devname);
 169 extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *);
 170 extern void cifs_umount(struct cifs_sb_info *);
 171 extern void cifs_dfs_release_automount_timer(void);
 172 void cifs_proc_init(void);
 173 void cifs_proc_clean(void);
 174
 175 extern int cifs_negotiate_protocol(unsigned int xid,
 176                                   struct cifs_ses *ses);
 177 extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
 178                         struct nls_table *nls_info);
 179 extern int CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses);
 180
 181 extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses,
 182                         const char *tree, struct cifs_tcon *tcon,
 183                         const struct nls_table *);
 184
 185 extern int CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
 186                 const char *searchName, const struct nls_table *nls_codepage,
 187                 __u16 *searchHandle, struct cifs_search_info *psrch_inf,
 188                 int map, const char dirsep);
 189
 190 extern int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
 191                 __u16 searchHandle, struct cifs_search_info *psrch_inf);
 192
 193 extern int CIFSFindClose(const int, struct cifs_tcon *tcon,
 194                         const __u16 search_handle);
 195
 196 extern int CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,
 197                         u16 netfid, FILE_ALL_INFO *pFindData);
 198 extern int CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,
 199                         const unsigned char *searchName,
 200                         FILE_ALL_INFO *findData,
 201                         int legacy /* whether to use old info level */,
 202                         const struct nls_table *nls_codepage, int remap);
 203 extern int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,
 204                         const unsigned char *searchName,
 205                         FILE_ALL_INFO *findData,
 206                         const struct nls_table *nls_codepage, int remap);
 207
 208 extern int CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,
 209                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 210 extern int CIFSSMBUnixQPathInfo(const int xid,
 211                         struct cifs_tcon *tcon,
 212                         const unsigned char *searchName,
 213                         FILE_UNIX_BASIC_INFO *pFindData,
 214                         const struct nls_table *nls_codepage, int remap);
 215
 216 extern int CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,
 217                         const unsigned char *searchName,
 218                         struct dfs_info3_param **target_nodes,
 219                         unsigned int *number_of_nodes_in_array,
 220                         const struct nls_table *nls_codepage, int remap);
 221
 222 extern int get_dfs_path(int xid, struct cifs_ses *pSesInfo,
 223                         const char *old_path,
 224                         const struct nls_table *nls_codepage,
 225                         unsigned int *pnum_referrals,
 226                         struct dfs_info3_param **preferrals,
 227                         int remap);
 228 extern void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
 229                                  struct cifs_sb_info *cifs_sb,
 230                                  struct smb_vol *vol);
 231 extern int CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon,
 232                         struct kstatfs *FSData);
 233 extern int SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon,
 234                         struct kstatfs *FSData);
 235 extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon,
 236                         __u64 cap);
 237
 238 extern int CIFSSMBQFSAttributeInfo(const int xid,
 239                         struct cifs_tcon *tcon);
 240 extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon);
 241 extern int CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon);
 242 extern int CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,
 243                         struct kstatfs *FSData);
 244
 245 extern int CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,
 246                         const char *fileName, const FILE_BASIC_INFO *data,
 247                         const struct nls_table *nls_codepage,
 248                         int remap_special_chars);
 249 extern int CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,
 250                         const FILE_BASIC_INFO *data, __u16 fid,
 251                         __u32 pid_of_opener);
 252 extern int CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,
 253                         bool delete_file, __u16 fid, __u32 pid_of_opener);
 254 #if 0
 255 extern int CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon,
 256                         char *fileName, __u16 dos_attributes,
 257                         const struct nls_table *nls_codepage);
 258 #endif /* possibly unneeded function */
 259 extern int CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon,
 260                         const char *fileName, __u64 size,
 261                         bool setAllocationSizeFlag,
 262                         const struct nls_table *nls_codepage,
 263                         int remap_special_chars);
 264 extern int CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon,
 265                          __u64 size, __u16 fileHandle, __u32 opener_pid,
 266                         bool AllocSizeFlag);
 267
 268 struct cifs_unix_set_info_args {
 269         __u64   ctime;
 270         __u64   atime;
 271         __u64   mtime;
 272         __u64   mode;
 273         __u64   uid;
 274         __u64   gid;
 275         dev_t   device;
 276 };
 277
 278 extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,
 279                                   const struct cifs_unix_set_info_args *args,
 280                                   u16 fid, u32 pid_of_opener);
 281
 282 extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *pTcon,
 283                         char *fileName,
 284                         const struct cifs_unix_set_info_args *args,
 285                         const struct nls_table *nls_codepage,
 286                         int remap_special_chars);
 287
 288 extern int CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,
 289                         const char *newName,
 290                         const struct nls_table *nls_codepage,
 291                         int remap_special_chars);
 292 extern int CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon,
 293                         const char *name, const struct nls_table *nls_codepage,
 294                         int remap_special_chars);
 295 extern int CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon,
 296                         const char *name, __u16 type,
 297                         const struct nls_table *nls_codepage,
 298                         int remap_special_chars);
 299 extern int CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon,
 300                         const char *name,
 301                         const struct nls_table *nls_codepage,
 302                         int remap_special_chars);
 303 extern int CIFSSMBRename(const int xid, 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 CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,
 308                         int netfid, const char *target_name,
 309                         const struct nls_table *nls_codepage,
 310                         int remap_special_chars);
 311 extern int CIFSCreateHardLink(const int xid,
 312                         struct cifs_tcon *tcon,
 313                         const char *fromName, const char *toName,
 314                         const struct nls_table *nls_codepage,
 315                         int remap_special_chars);
 316 extern int CIFSUnixCreateHardLink(const int xid,
 317                         struct cifs_tcon *tcon,
 318                         const char *fromName, const char *toName,
 319                         const struct nls_table *nls_codepage,
 320                         int remap_special_chars);
 321 extern int CIFSUnixCreateSymLink(const int xid,
 322                         struct cifs_tcon *tcon,
 323                         const char *fromName, const char *toName,
 324                         const struct nls_table *nls_codepage);
 325 extern int CIFSSMBUnixQuerySymLink(const int xid,
 326                         struct cifs_tcon *tcon,
 327                         const unsigned char *searchName, char **syminfo,
 328                         const struct nls_table *nls_codepage);
 329 #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
 330 extern int CIFSSMBQueryReparseLinkInfo(const int xid,
 331                         struct cifs_tcon *tcon,
 332                         const unsigned char *searchName,
 333                         char *symlinkinfo, const int buflen, __u16 fid,
 334                         const struct nls_table *nls_codepage);
 335 #endif /* temporarily unused until cifs_symlink fixed */
 336 extern int CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,
 337                         const char *fileName, const int disposition,
 338                         const int access_flags, const int omode,
 339                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 340                         const struct nls_table *nls_codepage, int remap);
 341 extern int SMBLegacyOpen(const int xid, struct cifs_tcon *tcon,
 342                         const char *fileName, const int disposition,
 343                         const int access_flags, const int omode,
 344                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 345                         const struct nls_table *nls_codepage, int remap);
 346 extern int CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon,
 347                         u32 posix_flags, __u64 mode, __u16 *netfid,
 348                         FILE_UNIX_BASIC_INFO *pRetData,
 349                         __u32 *pOplock, const char *name,
 350                         const struct nls_table *nls_codepage, int remap);
 351 extern int CIFSSMBClose(const int xid, struct cifs_tcon *tcon,
 352                         const int smb_file_id);
 353
 354 extern int CIFSSMBFlush(const int xid, struct cifs_tcon *tcon,
 355                         const int smb_file_id);
 356
 357 extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms,
 358                         unsigned int *nbytes, char **buf,
 359                         int *return_buf_type);
 360 extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
 361                         unsigned int *nbytes, const char *buf,
 362                         const char __user *ubuf, const int long_op);
 363 extern int CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
 364                         unsigned int *nbytes, struct kvec *iov, const int nvec,
 365                         const int long_op);
 366 extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
 367                         const unsigned char *searchName, __u64 *inode_number,
 368                         const struct nls_table *nls_codepage,
 369                         int remap_special_chars);
 370
 371 extern int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid,
 372                       const __u8 lock_type, const __u32 num_unlock,
 373                       const __u32 num_lock, LOCKING_ANDX_RANGE *buf);
 374 extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
 375                         const __u16 netfid, const __u32 netpid, const __u64 len,
 376                         const __u64 offset, const __u32 numUnlock,
 377                         const __u32 numLock, const __u8 lockType,
 378                         const bool waitFlag, const __u8 oplock_level);
 379 extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
 380                         const __u16 smb_file_id, const __u32 netpid,
 381                         const int get_flag, const __u64 len, struct file_lock *,
 382                         const __u16 lock_type, const bool waitFlag);
 383 extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);
 384 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 385 extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses);
 386
 387 extern struct cifs_ses *sesInfoAlloc(void);
 388 extern void sesInfoFree(struct cifs_ses *);
 389 extern struct cifs_tcon *tconInfoAlloc(void);
 390 extern void tconInfoFree(struct cifs_tcon *);
 391
 392 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 393 extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 394                           __u32 *);
 395 extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
 396                                  struct TCP_Server_Info *server,
 397                                 __u32 expected_sequence_number);
 398 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
 399                         const struct nls_table *);
 400 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
 401 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 402 extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
 403 extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
 404 extern int calc_seckey(struct cifs_ses *);
 405
 406 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 407 extern int calc_lanman_hash(const char *password, const char *cryptkey,
 408                                 bool encrypt, char *lnm_session_key);
 409 #endif /* CIFS_WEAK_PW_HASH */
 410 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
 411 extern int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon,
 412                         const int notify_subdirs, const __u16 netfid,
 413                         __u32 filter, struct file *file, int multishot,
 414                         const struct nls_table *nls_codepage);
 415 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
 416 extern int CIFSSMBCopy(int xid,
 417                         struct cifs_tcon *source_tcon,
 418                         const char *fromName,
 419                         const __u16 target_tid,
 420                         const char *toName, const int flags,
 421                         const struct nls_table *nls_codepage,
 422                         int remap_special_chars);
 423 extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,
 424                         const unsigned char *searchName,
 425                         const unsigned char *ea_name, char *EAData,
 426                         size_t bufsize, const struct nls_table *nls_codepage,
 427                         int remap_special_chars);
 428 extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon,
 429                 const char *fileName, const char *ea_name,
 430                 const void *ea_value, const __u16 ea_value_len,
 431                 const struct nls_table *nls_codepage, int remap_special_chars);
 432 extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon,
 433                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 434 extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16,
 435                         struct cifs_ntsd *, __u32, int);
 436 extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
 437                 const unsigned char *searchName,
 438                 char *acl_inf, const int buflen, const int acl_type,
 439                 const struct nls_table *nls_codepage, int remap_special_chars);
 440 extern int CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,
 441                 const unsigned char *fileName,
 442                 const char *local_acl, const int buflen, const int acl_type,
 443                 const struct nls_table *nls_codepage, int remap_special_chars);
 444 extern int CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,
 445                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 446 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 447 extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
 448 extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
 449                 const unsigned char *path,
 450                 struct cifs_sb_info *cifs_sb, int xid);
 451 extern int mdfour(unsigned char *, unsigned char *, int);
 452 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
 453                         const struct nls_table *codepage);
 454 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 455                         unsigned char *p24);
 456
 457 /* asynchronous read support */
 458 struct cifs_readdata {
 459         struct cifsFileInfo             *cfile;
 460         struct address_space            *mapping;
 461         __u64                           offset;
 462         unsigned int                    bytes;
 463         pid_t                           pid;
 464         int                             result;
 465         struct list_head                pages;
 466         struct work_struct              work;
 467         unsigned int                    nr_iov;
 468         struct kvec                     iov[1];
 469 };
 470
 471 struct cifs_readdata *cifs_readdata_alloc(unsigned int nr_pages);
 472 void cifs_readdata_free(struct cifs_readdata *rdata);
 473 int cifs_async_readv(struct cifs_readdata *rdata);
 474
 475 /* asynchronous write support */
 476 struct cifs_writedata {
 477         struct kref                     refcount;
 478         enum writeback_sync_modes       sync_mode;
 479         struct work_struct              work;
 480         struct cifsFileInfo             *cfile;
 481         __u64                           offset;
 482         unsigned int                    bytes;
 483         int                             result;
 484         unsigned int                    nr_pages;
 485         struct page                     *pages[1];
 486 };
 487
 488 int cifs_async_writev(struct cifs_writedata *wdata);
 489 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages);
 490 void cifs_writedata_release(struct kref *refcount);
 491
 492 #endif                  /* _CIFSPROTO_H */