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                             char *in_buf, int flags);
  81 extern int cifs_setup_request(struct cifs_ses *, struct kvec *, unsigned int,
  82                               struct mid_q_entry **);
  83 extern int cifs_check_receive(struct mid_q_entry *mid,
  84                         struct TCP_Server_Info *server, bool log_error);
  85 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
  86                         struct kvec *, int /* nvec to send */,
  87                         int * /* type of buf returned */ , const int flags);
  88 extern int SendReceiveBlockingLock(const unsigned int xid,
  89                         struct cifs_tcon *ptcon,
  90                         struct smb_hdr *in_buf ,
  91                         struct smb_hdr *out_buf,
  92                         int *bytes_returned);
  93 extern int checkSMB(char *buf, unsigned int length);
  94 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
  95 extern bool backup_cred(struct cifs_sb_info *);
  96 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
  97 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
  98                             unsigned int bytes_written);
  99 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
 100 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
 101 extern unsigned int smbCalcSize(struct smb_hdr *ptr);
 102 extern int decode_negTokenInit(unsigned char *security_blob, int length,
 103                         struct TCP_Server_Info *server);
 104 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
 105 extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 106 extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
 107                                 const unsigned short int port);
 108 extern int map_smb_to_linux_error(char *buf, bool logErr);
 109 extern void header_assemble(struct smb_hdr *, char /* command */ ,
 110                             const struct cifs_tcon *, int /* length of
 111                             fixed section (word count) in two byte units */);
 112 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 113                                 struct cifs_ses *ses,
 114                                 void **request_buf);
 115 extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
 116                              const struct nls_table *nls_cp);
 117 extern __u64 GetNextMid(struct TCP_Server_Info *server);
 118 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 119 extern u64 cifs_UnixTimeToNT(struct timespec);
 120 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 121                                       int offset);
 122 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 123
 124 extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
 125                                 struct file *file, struct tcon_link *tlink,
 126                                 __u32 oplock);
 127 extern int cifs_posix_open(char *full_path, struct inode **pinode,
 128                                 struct super_block *sb,
 129                                 int mode, unsigned int f_flags,
 130                                 __u32 *poplock, __u16 *pnetfid, int xid);
 131 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 132 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 133                                      FILE_UNIX_BASIC_INFO *info,
 134                                      struct cifs_sb_info *cifs_sb);
 135 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 136 extern struct inode *cifs_iget(struct super_block *sb,
 137                                struct cifs_fattr *fattr);
 138
 139 extern int cifs_get_file_info(struct file *filp);
 140 extern int cifs_get_inode_info(struct inode **pinode,
 141                         const unsigned char *search_path,
 142                         FILE_ALL_INFO *pfile_info,
 143                         struct super_block *sb, int xid, const __u16 *pfid);
 144 extern int cifs_get_file_info_unix(struct file *filp);
 145 extern int cifs_get_inode_info_unix(struct inode **pinode,
 146                         const unsigned char *search_path,
 147                         struct super_block *sb, int xid);
 148 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 149                               struct cifs_fattr *fattr, struct inode *inode,
 150                               const char *path, const __u16 *pfid);
 151 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
 152                                         uid_t, gid_t);
 153 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 154                                         const char *, u32 *);
 155 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 156                                 const char *, int);
 157
 158 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
 159 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
 160                      unsigned int to_read);
 161 extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
 162                 struct kvec *iov_orig, unsigned int nr_segs,
 163                 unsigned int to_read);
 164 extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 165                                struct cifs_sb_info *cifs_sb);
 166 extern int cifs_match_super(struct super_block *, void *);
 167 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
 168 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
 169                                             const char *devname);
 170 extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *);
 171 extern void cifs_umount(struct cifs_sb_info *);
 172
 173 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
 174 extern void cifs_dfs_release_automount_timer(void);
 175 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 176 #define cifs_dfs_release_automount_timer()      do { } while (0)
 177 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 178
 179 void cifs_proc_init(void);
 180 void cifs_proc_clean(void);
 181
 182 extern int cifs_negotiate_protocol(unsigned int xid,
 183                                   struct cifs_ses *ses);
 184 extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
 185                         struct nls_table *nls_info);
 186 extern int CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses);
 187
 188 extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses,
 189                         const char *tree, struct cifs_tcon *tcon,
 190                         const struct nls_table *);
 191
 192 extern int CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
 193                 const char *searchName, const struct nls_table *nls_codepage,
 194                 __u16 *searchHandle, __u16 search_flags,
 195                 struct cifs_search_info *psrch_inf,
 196                 int map, const char dirsep);
 197
 198 extern int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
 199                 __u16 searchHandle, __u16 search_flags,
 200                 struct cifs_search_info *psrch_inf);
 201
 202 extern int CIFSFindClose(const int, struct cifs_tcon *tcon,
 203                         const __u16 search_handle);
 204
 205 extern int CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,
 206                         u16 netfid, FILE_ALL_INFO *pFindData);
 207 extern int CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,
 208                         const unsigned char *searchName,
 209                         FILE_ALL_INFO *findData,
 210                         int legacy /* whether to use old info level */,
 211                         const struct nls_table *nls_codepage, int remap);
 212 extern int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,
 213                         const unsigned char *searchName,
 214                         FILE_ALL_INFO *findData,
 215                         const struct nls_table *nls_codepage, int remap);
 216
 217 extern int CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,
 218                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 219 extern int CIFSSMBUnixQPathInfo(const int xid,
 220                         struct cifs_tcon *tcon,
 221                         const unsigned char *searchName,
 222                         FILE_UNIX_BASIC_INFO *pFindData,
 223                         const struct nls_table *nls_codepage, int remap);
 224
 225 extern int CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,
 226                         const unsigned char *searchName,
 227                         struct dfs_info3_param **target_nodes,
 228                         unsigned int *number_of_nodes_in_array,
 229                         const struct nls_table *nls_codepage, int remap);
 230
 231 extern int get_dfs_path(int xid, struct cifs_ses *pSesInfo,
 232                         const char *old_path,
 233                         const struct nls_table *nls_codepage,
 234                         unsigned int *pnum_referrals,
 235                         struct dfs_info3_param **preferrals,
 236                         int remap);
 237 extern void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
 238                                  struct cifs_sb_info *cifs_sb,
 239                                  struct smb_vol *vol);
 240 extern int CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon,
 241                         struct kstatfs *FSData);
 242 extern int SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon,
 243                         struct kstatfs *FSData);
 244 extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon,
 245                         __u64 cap);
 246
 247 extern int CIFSSMBQFSAttributeInfo(const int xid,
 248                         struct cifs_tcon *tcon);
 249 extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon);
 250 extern int CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon);
 251 extern int CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,
 252                         struct kstatfs *FSData);
 253
 254 extern int CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,
 255                         const char *fileName, const FILE_BASIC_INFO *data,
 256                         const struct nls_table *nls_codepage,
 257                         int remap_special_chars);
 258 extern int CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,
 259                         const FILE_BASIC_INFO *data, __u16 fid,
 260                         __u32 pid_of_opener);
 261 extern int CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,
 262                         bool delete_file, __u16 fid, __u32 pid_of_opener);
 263 #if 0
 264 extern int CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon,
 265                         char *fileName, __u16 dos_attributes,
 266                         const struct nls_table *nls_codepage);
 267 #endif /* possibly unneeded function */
 268 extern int CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon,
 269                         const char *fileName, __u64 size,
 270                         bool setAllocationSizeFlag,
 271                         const struct nls_table *nls_codepage,
 272                         int remap_special_chars);
 273 extern int CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon,
 274                          __u64 size, __u16 fileHandle, __u32 opener_pid,
 275                         bool AllocSizeFlag);
 276
 277 struct cifs_unix_set_info_args {
 278         __u64   ctime;
 279         __u64   atime;
 280         __u64   mtime;
 281         __u64   mode;
 282         __u64   uid;
 283         __u64   gid;
 284         dev_t   device;
 285 };
 286
 287 extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,
 288                                   const struct cifs_unix_set_info_args *args,
 289                                   u16 fid, u32 pid_of_opener);
 290
 291 extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *pTcon,
 292                         char *fileName,
 293                         const struct cifs_unix_set_info_args *args,
 294                         const struct nls_table *nls_codepage,
 295                         int remap_special_chars);
 296
 297 extern int CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,
 298                         const char *newName,
 299                         const struct nls_table *nls_codepage,
 300                         int remap_special_chars);
 301 extern int CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon,
 302                         const char *name, const struct nls_table *nls_codepage,
 303                         int remap_special_chars);
 304 extern int CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon,
 305                         const char *name, __u16 type,
 306                         const struct nls_table *nls_codepage,
 307                         int remap_special_chars);
 308 extern int CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon,
 309                         const char *name,
 310                         const struct nls_table *nls_codepage,
 311                         int remap_special_chars);
 312 extern int CIFSSMBRename(const int xid, 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 CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,
 317                         int netfid, const char *target_name,
 318                         const struct nls_table *nls_codepage,
 319                         int remap_special_chars);
 320 extern int CIFSCreateHardLink(const int xid,
 321                         struct cifs_tcon *tcon,
 322                         const char *fromName, const char *toName,
 323                         const struct nls_table *nls_codepage,
 324                         int remap_special_chars);
 325 extern int CIFSUnixCreateHardLink(const int xid,
 326                         struct cifs_tcon *tcon,
 327                         const char *fromName, const char *toName,
 328                         const struct nls_table *nls_codepage,
 329                         int remap_special_chars);
 330 extern int CIFSUnixCreateSymLink(const int xid,
 331                         struct cifs_tcon *tcon,
 332                         const char *fromName, const char *toName,
 333                         const struct nls_table *nls_codepage);
 334 extern int CIFSSMBUnixQuerySymLink(const int xid,
 335                         struct cifs_tcon *tcon,
 336                         const unsigned char *searchName, char **syminfo,
 337                         const struct nls_table *nls_codepage);
 338 #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
 339 extern int CIFSSMBQueryReparseLinkInfo(const int xid,
 340                         struct cifs_tcon *tcon,
 341                         const unsigned char *searchName,
 342                         char *symlinkinfo, const int buflen, __u16 fid,
 343                         const struct nls_table *nls_codepage);
 344 #endif /* temporarily unused until cifs_symlink fixed */
 345 extern int CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,
 346                         const char *fileName, const int disposition,
 347                         const int access_flags, const int omode,
 348                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 349                         const struct nls_table *nls_codepage, int remap);
 350 extern int SMBLegacyOpen(const int xid, struct cifs_tcon *tcon,
 351                         const char *fileName, const int disposition,
 352                         const int access_flags, const int omode,
 353                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 354                         const struct nls_table *nls_codepage, int remap);
 355 extern int CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon,
 356                         u32 posix_flags, __u64 mode, __u16 *netfid,
 357                         FILE_UNIX_BASIC_INFO *pRetData,
 358                         __u32 *pOplock, const char *name,
 359                         const struct nls_table *nls_codepage, int remap);
 360 extern int CIFSSMBClose(const int xid, struct cifs_tcon *tcon,
 361                         const int smb_file_id);
 362
 363 extern int CIFSSMBFlush(const int xid, struct cifs_tcon *tcon,
 364                         const int smb_file_id);
 365
 366 extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms,
 367                         unsigned int *nbytes, char **buf,
 368                         int *return_buf_type);
 369 extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
 370                         unsigned int *nbytes, const char *buf,
 371                         const char __user *ubuf, const int long_op);
 372 extern int CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
 373                         unsigned int *nbytes, struct kvec *iov, const int nvec,
 374                         const int long_op);
 375 extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
 376                         const unsigned char *searchName, __u64 *inode_number,
 377                         const struct nls_table *nls_codepage,
 378                         int remap_special_chars);
 379
 380 extern int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid,
 381                       const __u8 lock_type, const __u32 num_unlock,
 382                       const __u32 num_lock, LOCKING_ANDX_RANGE *buf);
 383 extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
 384                         const __u16 netfid, const __u32 netpid, const __u64 len,
 385                         const __u64 offset, const __u32 numUnlock,
 386                         const __u32 numLock, const __u8 lockType,
 387                         const bool waitFlag, const __u8 oplock_level);
 388 extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
 389                         const __u16 smb_file_id, const __u32 netpid,
 390                         const int get_flag, const __u64 len, struct file_lock *,
 391                         const __u16 lock_type, const bool waitFlag);
 392 extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);
 393 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 394 extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses);
 395
 396 extern struct cifs_ses *sesInfoAlloc(void);
 397 extern void sesInfoFree(struct cifs_ses *);
 398 extern struct cifs_tcon *tconInfoAlloc(void);
 399 extern void tconInfoFree(struct cifs_tcon *);
 400
 401 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 402 extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 403                           __u32 *);
 404 extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
 405                                  struct TCP_Server_Info *server,
 406                                 __u32 expected_sequence_number);
 407 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
 408                         const struct nls_table *);
 409 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
 410 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 411 extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
 412 extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
 413 extern int calc_seckey(struct cifs_ses *);
 414
 415 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 416 extern int calc_lanman_hash(const char *password, const char *cryptkey,
 417                                 bool encrypt, char *lnm_session_key);
 418 #endif /* CIFS_WEAK_PW_HASH */
 419 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
 420 extern int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon,
 421                         const int notify_subdirs, const __u16 netfid,
 422                         __u32 filter, struct file *file, int multishot,
 423                         const struct nls_table *nls_codepage);
 424 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
 425 extern int CIFSSMBCopy(int xid,
 426                         struct cifs_tcon *source_tcon,
 427                         const char *fromName,
 428                         const __u16 target_tid,
 429                         const char *toName, const int flags,
 430                         const struct nls_table *nls_codepage,
 431                         int remap_special_chars);
 432 extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,
 433                         const unsigned char *searchName,
 434                         const unsigned char *ea_name, char *EAData,
 435                         size_t bufsize, const struct nls_table *nls_codepage,
 436                         int remap_special_chars);
 437 extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon,
 438                 const char *fileName, const char *ea_name,
 439                 const void *ea_value, const __u16 ea_value_len,
 440                 const struct nls_table *nls_codepage, int remap_special_chars);
 441 extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon,
 442                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 443 extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16,
 444                         struct cifs_ntsd *, __u32, int);
 445 extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
 446                 const unsigned char *searchName,
 447                 char *acl_inf, const int buflen, const int acl_type,
 448                 const struct nls_table *nls_codepage, int remap_special_chars);
 449 extern int CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,
 450                 const unsigned char *fileName,
 451                 const char *local_acl, const int buflen, const int acl_type,
 452                 const struct nls_table *nls_codepage, int remap_special_chars);
 453 extern int CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,
 454                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 455 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 456 extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
 457 extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
 458                 const unsigned char *path,
 459                 struct cifs_sb_info *cifs_sb, int xid);
 460 extern int mdfour(unsigned char *, unsigned char *, int);
 461 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
 462                         const struct nls_table *codepage);
 463 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 464                         unsigned char *p24);
 465
 466 /* asynchronous read support */
 467 struct cifs_readdata {
 468         struct kref                     refcount;
 469         struct list_head                list;
 470         struct completion               done;
 471         struct cifsFileInfo             *cfile;
 472         struct address_space            *mapping;
 473         __u64                           offset;
 474         unsigned int                    bytes;
 475         pid_t                           pid;
 476         int                             result;
 477         struct list_head                pages;
 478         struct work_struct              work;
 479         int (*marshal_iov) (struct cifs_readdata *rdata,
 480                             unsigned int remaining);
 481         unsigned int                    nr_iov;
 482         struct kvec                     iov[1];
 483 };
 484
 485 void cifs_readdata_release(struct kref *refcount);
 486 int cifs_async_readv(struct cifs_readdata *rdata);
 487
 488 /* asynchronous write support */
 489 struct cifs_writedata {
 490         struct kref                     refcount;
 491         struct list_head                list;
 492         struct completion               done;
 493         enum writeback_sync_modes       sync_mode;
 494         struct work_struct              work;
 495         struct cifsFileInfo             *cfile;
 496         __u64                           offset;
 497         pid_t                           pid;
 498         unsigned int                    bytes;
 499         int                             result;
 500         void (*marshal_iov) (struct kvec *iov,
 501                              struct cifs_writedata *wdata);
 502         unsigned int                    nr_pages;
 503         struct page                     *pages[1];
 504 };
 505
 506 int cifs_async_writev(struct cifs_writedata *wdata);
 507 void cifs_writev_complete(struct work_struct *work);
 508 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
 509                                                 work_func_t complete);
 510 void cifs_writedata_release(struct kref *refcount);
 511
 512 #endif                  /* _CIFSPROTO_H */