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