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() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current_fsuid()));
  43 #define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__func__,curr_xid,(int)rc));}
  44 extern char *build_path_from_dentry(struct dentry *);
  45 extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb);
  46 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
  47 extern char *cifs_compose_mount_options(const char *sb_mountdata,
  48                 const char *fullpath, const struct dfs_info3_param *ref,
  49                 char **devname);
  50 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
  51 extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
  52                         struct smb_hdr * /* input */ ,
  53                         struct smb_hdr * /* out */ ,
  54                         int * /* bytes returned */ , const int long_op);
  55 extern int SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses,
  56                         struct smb_hdr *in_buf, int flags);
  57 extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
  58                         struct kvec *, int /* nvec to send */,
  59                         int * /* type of buf returned */ , const int flags);
  60 extern int SendReceiveBlockingLock(const unsigned int xid,
  61                         struct cifsTconInfo *ptcon,
  62                         struct smb_hdr *in_buf ,
  63                         struct smb_hdr *out_buf,
  64                         int *bytes_returned);
  65 extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
  66 extern bool is_valid_oplock_break(struct smb_hdr *smb,
  67                                   struct TCP_Server_Info *);
  68 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
  69 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *);
  70 #ifdef CONFIG_CIFS_EXPERIMENTAL
  71 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *);
  72 #endif
  73 extern unsigned int smbCalcSize(struct smb_hdr *ptr);
  74 extern unsigned int smbCalcSize_LE(struct smb_hdr *ptr);
  75 extern int decode_negTokenInit(unsigned char *security_blob, int length,
  76                         enum securityEnum *secType);
  77 extern int cifs_convert_address(char *src, void *dst);
  78 extern int map_smb_to_linux_error(struct smb_hdr *smb, int logErr);
  79 extern void header_assemble(struct smb_hdr *, char /* command */ ,
  80                             const struct cifsTconInfo *, int /* length of
  81                             fixed section (word count) in two byte units */);
  82 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
  83                                 struct cifsSesInfo *ses,
  84                                 void **request_buf);
  85 extern int CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
  86                              const int stage,
  87                              const struct nls_table *nls_cp);
  88 extern __u16 GetNextMid(struct TCP_Server_Info *server);
  89 extern struct oplock_q_entry *AllocOplockQEntry(struct inode *, u16,
  90                                                  struct cifsTconInfo *);
  91 extern void DeleteOplockQEntry(struct oplock_q_entry *);
  92 extern void DeleteTconOplockQEntries(struct cifsTconInfo *);
  93 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
  94 extern u64 cifs_UnixTimeToNT(struct timespec);
  95 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
  96                                       int offset);
  97
  98 extern int cifs_posix_open(char *full_path, struct inode **pinode,
  99                            struct super_block *sb, int mode, int oflags,
 100                            int *poplock, __u16 *pnetfid, int xid);
 101 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 102                                      FILE_UNIX_BASIC_INFO *info,
 103                                      struct cifs_sb_info *cifs_sb);
 104 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 105 extern struct inode *cifs_iget(struct super_block *sb,
 106                                struct cifs_fattr *fattr);
 107
 108 extern int cifs_get_inode_info(struct inode **pinode,
 109                         const unsigned char *search_path,
 110                         FILE_ALL_INFO *pfile_info,
 111                         struct super_block *sb, int xid, const __u16 *pfid);
 112 extern int cifs_get_inode_info_unix(struct inode **pinode,
 113                         const unsigned char *search_path,
 114                         struct super_block *sb, int xid);
 115 extern void cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 116                               struct cifs_fattr *fattr, struct inode *inode,
 117                               const char *path, const __u16 *pfid);
 118 extern int mode_to_acl(struct inode *inode, const char *path, __u64);
 119
 120 extern int cifs_mount(struct super_block *, struct cifs_sb_info *, char *,
 121                         const char *);
 122 extern int cifs_umount(struct super_block *, struct cifs_sb_info *);
 123 extern void cifs_dfs_release_automount_timer(void);
 124 void cifs_proc_init(void);
 125 void cifs_proc_clean(void);
 126
 127 extern int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
 128                         struct nls_table *nls_info);
 129 extern int CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses);
 130
 131 extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
 132                         const char *tree, struct cifsTconInfo *tcon,
 133                         const struct nls_table *);
 134
 135 extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
 136                 const char *searchName, const struct nls_table *nls_codepage,
 137                 __u16 *searchHandle, struct cifs_search_info *psrch_inf,
 138                 int map, const char dirsep);
 139
 140 extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
 141                 __u16 searchHandle, struct cifs_search_info *psrch_inf);
 142
 143 extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
 144                         const __u16 search_handle);
 145
 146 extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
 147                         const unsigned char *searchName,
 148                         FILE_ALL_INFO *findData,
 149                         int legacy /* whether to use old info level */,
 150                         const struct nls_table *nls_codepage, int remap);
 151 extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
 152                         const unsigned char *searchName,
 153                         FILE_ALL_INFO *findData,
 154                         const struct nls_table *nls_codepage, int remap);
 155
 156 extern int CIFSSMBUnixQPathInfo(const int xid,
 157                         struct cifsTconInfo *tcon,
 158                         const unsigned char *searchName,
 159                         FILE_UNIX_BASIC_INFO *pFindData,
 160                         const struct nls_table *nls_codepage, int remap);
 161
 162 extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
 163                         const unsigned char *searchName,
 164                         struct dfs_info3_param **target_nodes,
 165                         unsigned int *number_of_nodes_in_array,
 166                         const struct nls_table *nls_codepage, int remap);
 167
 168 extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
 169                         const char *old_path,
 170                         const struct nls_table *nls_codepage,
 171                         unsigned int *pnum_referrals,
 172                         struct dfs_info3_param **preferrals,
 173                         int remap);
 174 extern void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
 175                                  struct super_block *sb, struct smb_vol *vol);
 176 extern int CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,
 177                         struct kstatfs *FSData);
 178 extern int SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon,
 179                         struct kstatfs *FSData);
 180 extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon,
 181                         __u64 cap);
 182
 183 extern int CIFSSMBQFSAttributeInfo(const int xid,
 184                         struct cifsTconInfo *tcon);
 185 extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon);
 186 extern int CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon);
 187 extern int CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
 188                         struct kstatfs *FSData);
 189
 190 extern int CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon,
 191                         const char *fileName, const FILE_BASIC_INFO *data,
 192                         const struct nls_table *nls_codepage,
 193                         int remap_special_chars);
 194 extern int CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon,
 195                         const FILE_BASIC_INFO *data, __u16 fid,
 196                         __u32 pid_of_opener);
 197 extern int CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon,
 198                         bool delete_file, __u16 fid, __u32 pid_of_opener);
 199 #if 0
 200 extern int CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon,
 201                         char *fileName, __u16 dos_attributes,
 202                         const struct nls_table *nls_codepage);
 203 #endif /* possibly unneeded function */
 204 extern int CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon,
 205                         const char *fileName, __u64 size,
 206                         bool setAllocationSizeFlag,
 207                         const struct nls_table *nls_codepage,
 208                         int remap_special_chars);
 209 extern int CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon,
 210                          __u64 size, __u16 fileHandle, __u32 opener_pid,
 211                         bool AllocSizeFlag);
 212
 213 struct cifs_unix_set_info_args {
 214         __u64   ctime;
 215         __u64   atime;
 216         __u64   mtime;
 217         __u64   mode;
 218         __u64   uid;
 219         __u64   gid;
 220         dev_t   device;
 221 };
 222
 223 extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon,
 224                                   const struct cifs_unix_set_info_args *args,
 225                                   u16 fid, u32 pid_of_opener);
 226
 227 extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *pTcon,
 228                         char *fileName,
 229                         const struct cifs_unix_set_info_args *args,
 230                         const struct nls_table *nls_codepage,
 231                         int remap_special_chars);
 232
 233 extern int CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
 234                         const char *newName,
 235                         const struct nls_table *nls_codepage,
 236                         int remap_special_chars);
 237 extern int CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon,
 238                         const char *name, const struct nls_table *nls_codepage,
 239                         int remap_special_chars);
 240 extern int CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon,
 241                         const char *name, __u16 type,
 242                         const struct nls_table *nls_codepage,
 243                         int remap_special_chars);
 244 extern int CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon,
 245                         const char *name,
 246                         const struct nls_table *nls_codepage,
 247                         int remap_special_chars);
 248 extern int CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
 249                         const char *fromName, const char *toName,
 250                         const struct nls_table *nls_codepage,
 251                         int remap_special_chars);
 252 extern int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
 253                         int netfid, const char *target_name,
 254                         const struct nls_table *nls_codepage,
 255                         int remap_special_chars);
 256 extern int CIFSCreateHardLink(const int xid,
 257                         struct cifsTconInfo *tcon,
 258                         const char *fromName, const char *toName,
 259                         const struct nls_table *nls_codepage,
 260                         int remap_special_chars);
 261 extern int CIFSUnixCreateHardLink(const int xid,
 262                         struct cifsTconInfo *tcon,
 263                         const char *fromName, const char *toName,
 264                         const struct nls_table *nls_codepage,
 265                         int remap_special_chars);
 266 extern int CIFSUnixCreateSymLink(const int xid,
 267                         struct cifsTconInfo *tcon,
 268                         const char *fromName, const char *toName,
 269                         const struct nls_table *nls_codepage);
 270 extern int CIFSSMBUnixQuerySymLink(const int xid,
 271                         struct cifsTconInfo *tcon,
 272                         const unsigned char *searchName, char **syminfo,
 273                         const struct nls_table *nls_codepage);
 274 extern int CIFSSMBQueryReparseLinkInfo(const int xid,
 275                         struct cifsTconInfo *tcon,
 276                         const unsigned char *searchName,
 277                         char *symlinkinfo, const int buflen, __u16 fid,
 278                         const struct nls_table *nls_codepage);
 279
 280 extern int CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
 281                         const char *fileName, const int disposition,
 282                         const int access_flags, const int omode,
 283                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 284                         const struct nls_table *nls_codepage, int remap);
 285 extern int SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
 286                         const char *fileName, const int disposition,
 287                         const int access_flags, const int omode,
 288                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 289                         const struct nls_table *nls_codepage, int remap);
 290 extern int CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon,
 291                         u32 posix_flags, __u64 mode, __u16 *netfid,
 292                         FILE_UNIX_BASIC_INFO *pRetData,
 293                         __u32 *pOplock, const char *name,
 294                         const struct nls_table *nls_codepage, int remap);
 295 extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon,
 296                         const int smb_file_id);
 297
 298 extern int CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon,
 299                         const int smb_file_id);
 300
 301 extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
 302                         const int netfid, unsigned int count,
 303                         const __u64 lseek, unsigned int *nbytes, char **buf,
 304                         int *return_buf_type);
 305 extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
 306                         const int netfid, const unsigned int count,
 307                         const __u64 lseek, unsigned int *nbytes,
 308                         const char *buf, const char __user *ubuf,
 309                         const int long_op);
 310 extern int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 311                         const int netfid, const unsigned int count,
 312                         const __u64 offset, unsigned int *nbytes,
 313                         struct kvec *iov, const int nvec, const int long_op);
 314 extern int CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
 315                         const unsigned char *searchName, __u64 *inode_number,
 316                         const struct nls_table *nls_codepage,
 317                         int remap_special_chars);
 318 extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
 319                         const struct nls_table *cp, int mapChars);
 320
 321 extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
 322                         const __u16 netfid, const __u64 len,
 323                         const __u64 offset, const __u32 numUnlock,
 324                         const __u32 numLock, const __u8 lockType,
 325                         const bool waitFlag);
 326 extern int CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
 327                         const __u16 smb_file_id, const int get_flag,
 328                         const __u64 len, struct file_lock *,
 329                         const __u16 lock_type, const bool waitFlag);
 330 extern int CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon);
 331 extern int CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses);
 332
 333 extern struct cifsSesInfo *sesInfoAlloc(void);
 334 extern void sesInfoFree(struct cifsSesInfo *);
 335 extern struct cifsTconInfo *tconInfoAlloc(void);
 336 extern void tconInfoFree(struct cifsTconInfo *);
 337
 338 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 339 extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 340                           __u32 *);
 341 extern int cifs_verify_signature(struct smb_hdr *,
 342                                  const struct mac_key *mac_key,
 343                                 __u32 expected_sequence_number);
 344 extern int cifs_calculate_mac_key(struct mac_key *key, const char *rn,
 345                                  const char *pass);
 346 extern int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *,
 347                         const struct nls_table *);
 348 extern void CalcNTLMv2_response(const struct cifsSesInfo *, char *);
 349 extern void setup_ntlmv2_rsp(struct cifsSesInfo *, char *,
 350                              const struct nls_table *);
 351 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 352 extern void calc_lanman_hash(const char *password, const char *cryptkey,
 353                                 bool encrypt, char *lnm_session_key);
 354 #endif /* CIFS_WEAK_PW_HASH */
 355 extern int CIFSSMBCopy(int xid,
 356                         struct cifsTconInfo *source_tcon,
 357                         const char *fromName,
 358                         const __u16 target_tid,
 359                         const char *toName, const int flags,
 360                         const struct nls_table *nls_codepage,
 361                         int remap_special_chars);
 362 extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
 363                         const int notify_subdirs, const __u16 netfid,
 364                         __u32 filter, struct file *file, int multishot,
 365                         const struct nls_table *nls_codepage);
 366 extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
 367                         const unsigned char *searchName, char *EAData,
 368                         size_t bufsize, const struct nls_table *nls_codepage,
 369                         int remap_special_chars);
 370 extern ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon,
 371                 const unsigned char *searchName, const unsigned char *ea_name,
 372                 unsigned char *ea_value, size_t buf_size,
 373                 const struct nls_table *nls_codepage, int remap_special_chars);
 374 extern int CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon,
 375                 const char *fileName, const char *ea_name,
 376                 const void *ea_value, const __u16 ea_value_len,
 377                 const struct nls_table *nls_codepage, int remap_special_chars);
 378 extern int CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon,
 379                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 380 extern int CIFSSMBSetCIFSACL(const int, struct cifsTconInfo *, __u16,
 381                         struct cifs_ntsd *, __u32);
 382 extern int CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
 383                 const unsigned char *searchName,
 384                 char *acl_inf, const int buflen, const int acl_type,
 385                 const struct nls_table *nls_codepage, int remap_special_chars);
 386 extern int CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
 387                 const unsigned char *fileName,
 388                 const char *local_acl, const int buflen, const int acl_type,
 389                 const struct nls_table *nls_codepage, int remap_special_chars);
 390 extern int CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
 391                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 392 #endif                  /* _CIFSPROTO_H */