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 #include "trace.h"
  25 #ifdef CONFIG_CIFS_DFS_UPCALL
  26 #include "dfs_cache.h"
  27 #endif
  28
  29 struct statfs;
  30 struct smb_vol;
  31 struct smb_rqst;
  32
  33 /*
  34  *****************************************************************
  35  * All Prototypes
  36  *****************************************************************
  37  */
  38
  39 extern struct smb_hdr *cifs_buf_get(void);
  40 extern void cifs_buf_release(void *);
  41 extern struct smb_hdr *cifs_small_buf_get(void);
  42 extern void cifs_small_buf_release(void *);
  43 extern void free_rsp_buf(int, void *);
  44 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
  45                         unsigned int /* length */);
  46 extern unsigned int _get_xid(void);
  47 extern void _free_xid(unsigned int);
  48 #define get_xid()                                               \
  49 ({                                                              \
  50         unsigned int __xid = _get_xid();                                \
  51         cifs_dbg(FYI, "CIFS VFS: in %s as Xid: %u with uid: %d\n",      \
  52                  __func__, __xid,                                       \
  53                  from_kuid(&init_user_ns, current_fsuid()));            \
  54         trace_smb3_enter(__xid, __func__);                      \
  55         __xid;                                                  \
  56 })
  57
  58 #define free_xid(curr_xid)                                      \
  59 do {                                                            \
  60         _free_xid(curr_xid);                                    \
  61         cifs_dbg(FYI, "CIFS VFS: leaving %s (xid = %u) rc = %d\n",      \
  62                  __func__, curr_xid, (int)rc);                  \
  63         if (rc)                                                 \
  64                 trace_smb3_exit_err(curr_xid, __func__, (int)rc);       \
  65         else                                                    \
  66                 trace_smb3_exit_done(curr_xid, __func__);       \
  67 } while (0)
  68 extern int init_cifs_idmap(void);
  69 extern void exit_cifs_idmap(void);
  70 extern int init_cifs_spnego(void);
  71 extern void exit_cifs_spnego(void);
  72 extern char *build_path_from_dentry(struct dentry *);
  73 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
  74                                                     bool prefix);
  75 extern char *cifs_build_path_to_root(struct smb_vol *vol,
  76                                      struct cifs_sb_info *cifs_sb,
  77                                      struct cifs_tcon *tcon,
  78                                      int add_treename);
  79 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
  80 extern char *cifs_compose_mount_options(const char *sb_mountdata,
  81                 const char *fullpath, const struct dfs_info3_param *ref,
  82                 char **devname);
  83 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
  84 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
  85                                         struct TCP_Server_Info *server);
  86 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
  87 extern void cifs_delete_mid(struct mid_q_entry *mid);
  88 extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
  89 extern void cifs_wake_up_task(struct mid_q_entry *mid);
  90 extern int cifs_handle_standard(struct TCP_Server_Info *server,
  91                                 struct mid_q_entry *mid);
  92 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
  93 extern int cifs_call_async(struct TCP_Server_Info *server,
  94                         struct smb_rqst *rqst,
  95                         mid_receive_t *receive, mid_callback_t *callback,
  96                         mid_handle_t *handle, void *cbdata, const int flags);
  97 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
  98                           struct smb_rqst *rqst, int *resp_buf_type,
  99                           const int flags, struct kvec *resp_iov);
 100 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
 101                               const int flags, const int num_rqst,
 102                               struct smb_rqst *rqst, int *resp_buf_type,
 103                               struct kvec *resp_iov);
 104 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
 105                         struct smb_hdr * /* input */ ,
 106                         struct smb_hdr * /* out */ ,
 107                         int * /* bytes returned */ , const int);
 108 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
 109                             char *in_buf, int flags);
 110 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
 111                                 struct smb_rqst *);
 112 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
 113                                                 struct smb_rqst *);
 114 extern int cifs_check_receive(struct mid_q_entry *mid,
 115                         struct TCP_Server_Info *server, bool log_error);
 116 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
 117                                  unsigned int size, unsigned int *num,
 118                                  unsigned int *credits);
 119 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
 120                         struct kvec *, int /* nvec to send */,
 121                         int * /* type of buf returned */, const int flags,
 122                         struct kvec * /* resp vec */);
 123 extern int SendReceiveBlockingLock(const unsigned int xid,
 124                         struct cifs_tcon *ptcon,
 125                         struct smb_hdr *in_buf ,
 126                         struct smb_hdr *out_buf,
 127                         int *bytes_returned);
 128 extern int cifs_reconnect(struct TCP_Server_Info *server);
 129 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
 130 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
 131 extern bool backup_cred(struct cifs_sb_info *);
 132 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
 133 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
 134                             unsigned int bytes_written);
 135 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
 136 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
 137 extern unsigned int smbCalcSize(void *buf, struct TCP_Server_Info *server);
 138 extern int decode_negTokenInit(unsigned char *security_blob, int length,
 139                         struct TCP_Server_Info *server);
 140 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
 141 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 142 extern int map_smb_to_linux_error(char *buf, bool logErr);
 143 extern void header_assemble(struct smb_hdr *, char /* command */ ,
 144                             const struct cifs_tcon *, int /* length of
 145                             fixed section (word count) in two byte units */);
 146 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 147                                 struct cifs_ses *ses,
 148                                 void **request_buf);
 149 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
 150                                 enum securityEnum requested);
 151 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
 152                           const struct nls_table *nls_cp);
 153 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 154 extern u64 cifs_UnixTimeToNT(struct timespec64);
 155 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 156                                       int offset);
 157 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 158 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
 159 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
 160 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
 161 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
 162                              struct file_lock *flock, const unsigned int xid);
 163 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
 164
 165 extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
 166                                               struct file *file,
 167                                               struct tcon_link *tlink,
 168                                               __u32 oplock);
 169 extern int cifs_posix_open(char *full_path, struct inode **inode,
 170                            struct super_block *sb, int mode,
 171                            unsigned int f_flags, __u32 *oplock, __u16 *netfid,
 172                            unsigned int xid);
 173 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 174 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 175                                      FILE_UNIX_BASIC_INFO *info,
 176                                      struct cifs_sb_info *cifs_sb);
 177 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
 178                                         struct cifs_sb_info *);
 179 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 180 extern struct inode *cifs_iget(struct super_block *sb,
 181                                struct cifs_fattr *fattr);
 182
 183 extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
 184                                FILE_ALL_INFO *data, struct super_block *sb,
 185                                int xid, const struct cifs_fid *fid);
 186 extern int cifs_get_inode_info_unix(struct inode **pinode,
 187                         const unsigned char *search_path,
 188                         struct super_block *sb, unsigned int xid);
 189 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
 190                               unsigned int xid, char *full_path, __u32 dosattr);
 191 extern int cifs_rename_pending_delete(const char *full_path,
 192                                       struct dentry *dentry,
 193                                       const unsigned int xid);
 194 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 195                               struct cifs_fattr *fattr, struct inode *inode,
 196                               const char *path, const struct cifs_fid *pfid);
 197 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
 198                                         kuid_t, kgid_t);
 199 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 200                                         const char *, u32 *);
 201 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
 202                                                 const struct cifs_fid *, u32 *);
 203 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 204                                 const char *, int);
 205
 206 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
 207 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
 208                                  unsigned int to_read);
 209 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
 210                                         struct page *page,
 211                                         unsigned int page_offset,
 212                                         unsigned int to_read);
 213 extern int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 214                                struct cifs_sb_info *cifs_sb);
 215 extern int cifs_match_super(struct super_block *, void *);
 216 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
 217 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
 218                                             const char *devname, bool is_smb3);
 219 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol);
 220 extern void cifs_umount(struct cifs_sb_info *);
 221 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
 222 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
 223
 224 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
 225                                     __u64 length, __u8 type, __u16 flags,
 226                                     struct cifsLockInfo **conf_lock,
 227                                     int rw_check);
 228 extern void cifs_add_pending_open(struct cifs_fid *fid,
 229                                   struct tcon_link *tlink,
 230                                   struct cifs_pending_open *open);
 231 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
 232                                          struct tcon_link *tlink,
 233                                          struct cifs_pending_open *open);
 234 extern void cifs_del_pending_open(struct cifs_pending_open *open);
 235 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
 236                                  int from_reconnect);
 237 extern void cifs_put_tcon(struct cifs_tcon *tcon);
 238
 239 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
 240 extern void cifs_dfs_release_automount_timer(void);
 241 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 242 #define cifs_dfs_release_automount_timer()      do { } while (0)
 243 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 244
 245 void cifs_proc_init(void);
 246 void cifs_proc_clean(void);
 247
 248 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
 249 extern void cifs_free_llist(struct list_head *llist);
 250 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
 251
 252 extern int cifs_negotiate_protocol(const unsigned int xid,
 253                                    struct cifs_ses *ses);
 254 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 255                               struct nls_table *nls_info);
 256 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
 257 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
 258
 259 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
 260                     const char *tree, struct cifs_tcon *tcon,
 261                     const struct nls_table *);
 262
 263 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
 264                 const char *searchName, struct cifs_sb_info *cifs_sb,
 265                 __u16 *searchHandle, __u16 search_flags,
 266                 struct cifs_search_info *psrch_inf,
 267                 bool msearch);
 268
 269 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
 270                 __u16 searchHandle, __u16 search_flags,
 271                 struct cifs_search_info *psrch_inf);
 272
 273 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
 274                         const __u16 search_handle);
 275
 276 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 277                         u16 netfid, FILE_ALL_INFO *pFindData);
 278 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 279                             const char *search_Name, FILE_ALL_INFO *data,
 280                             int legacy /* whether to use old info level */,
 281                             const struct nls_table *nls_codepage, int remap);
 282 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
 283                                const char *search_name, FILE_ALL_INFO *data,
 284                                const struct nls_table *nls_codepage, int remap);
 285
 286 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 287                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 288 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
 289                         struct cifs_tcon *tcon,
 290                         const unsigned char *searchName,
 291                         FILE_UNIX_BASIC_INFO *pFindData,
 292                         const struct nls_table *nls_codepage, int remap);
 293
 294 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
 295                            const char *search_name,
 296                            struct dfs_info3_param **target_nodes,
 297                            unsigned int *num_of_nodes,
 298                            const struct nls_table *nls_codepage, int remap);
 299
 300 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
 301                                unsigned int *num_of_nodes,
 302                                struct dfs_info3_param **target_nodes,
 303                                const struct nls_table *nls_codepage, int remap,
 304                                const char *searchName, bool is_unicode);
 305 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
 306                                  struct cifs_sb_info *cifs_sb,
 307                                  struct smb_vol *vol);
 308 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 309                         struct kstatfs *FSData);
 310 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 311                         struct kstatfs *FSData);
 312 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 313                         __u64 cap);
 314
 315 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
 316                         struct cifs_tcon *tcon);
 317 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
 318 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
 319 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 320                         struct kstatfs *FSData);
 321
 322 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 323                         const char *fileName, const FILE_BASIC_INFO *data,
 324                         const struct nls_table *nls_codepage,
 325                         int remap_special_chars);
 326 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 327                         const FILE_BASIC_INFO *data, __u16 fid,
 328                         __u32 pid_of_opener);
 329 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
 330                                      struct cifs_tcon *tcon,
 331                                      bool delete_file, __u16 fid,
 332                                      __u32 pid_of_opener);
 333 #if 0
 334 extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,
 335                         char *fileName, __u16 dos_attributes,
 336                         const struct nls_table *nls_codepage);
 337 #endif /* possibly unneeded function */
 338 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
 339                          const char *file_name, __u64 size,
 340                          struct cifs_sb_info *cifs_sb, bool set_allocation);
 341 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 342                               struct cifsFileInfo *cfile, __u64 size,
 343                               bool set_allocation);
 344
 345 struct cifs_unix_set_info_args {
 346         __u64   ctime;
 347         __u64   atime;
 348         __u64   mtime;
 349         __u64   mode;
 350         kuid_t  uid;
 351         kgid_t  gid;
 352         dev_t   device;
 353 };
 354
 355 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 356                                   struct cifs_tcon *tcon,
 357                                   const struct cifs_unix_set_info_args *args,
 358                                   u16 fid, u32 pid_of_opener);
 359
 360 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
 361                                   struct cifs_tcon *tcon, const char *file_name,
 362                                   const struct cifs_unix_set_info_args *args,
 363                                   const struct nls_table *nls_codepage,
 364                                   int remap);
 365
 366 extern int CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon,
 367                         const char *name, struct cifs_sb_info *cifs_sb);
 368 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
 369                         const char *name, struct cifs_sb_info *cifs_sb);
 370 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 371                         const char *name, __u16 type,
 372                         const struct nls_table *nls_codepage,
 373                         int remap_special_chars);
 374 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 375                           const char *name, struct cifs_sb_info *cifs_sb);
 376 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
 377                          const char *from_name, const char *to_name,
 378                          struct cifs_sb_info *cifs_sb);
 379 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
 380                                  int netfid, const char *target_name,
 381                                  const struct nls_table *nls_codepage,
 382                                  int remap_special_chars);
 383 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
 384                               const char *from_name, const char *to_name,
 385                               struct cifs_sb_info *cifs_sb);
 386 extern int CIFSUnixCreateHardLink(const unsigned int xid,
 387                         struct cifs_tcon *tcon,
 388                         const char *fromName, const char *toName,
 389                         const struct nls_table *nls_codepage,
 390                         int remap_special_chars);
 391 extern int CIFSUnixCreateSymLink(const unsigned int xid,
 392                         struct cifs_tcon *tcon,
 393                         const char *fromName, const char *toName,
 394                         const struct nls_table *nls_codepage, int remap);
 395 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
 396                         struct cifs_tcon *tcon,
 397                         const unsigned char *searchName, char **syminfo,
 398                         const struct nls_table *nls_codepage, int remap);
 399 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 400                                __u16 fid, char **symlinkinfo,
 401                                const struct nls_table *nls_codepage);
 402 extern int CIFSSMB_set_compression(const unsigned int xid,
 403                                    struct cifs_tcon *tcon, __u16 fid);
 404 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
 405                      int *oplock, FILE_ALL_INFO *buf);
 406 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
 407                         const char *fileName, const int disposition,
 408                         const int access_flags, const int omode,
 409                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 410                         const struct nls_table *nls_codepage, int remap);
 411 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
 412                         u32 posix_flags, __u64 mode, __u16 *netfid,
 413                         FILE_UNIX_BASIC_INFO *pRetData,
 414                         __u32 *pOplock, const char *name,
 415                         const struct nls_table *nls_codepage, int remap);
 416 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
 417                         const int smb_file_id);
 418
 419 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
 420                         const int smb_file_id);
 421
 422 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
 423                         unsigned int *nbytes, char **buf,
 424                         int *return_buf_type);
 425 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
 426                         unsigned int *nbytes, const char *buf);
 427 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
 428                         unsigned int *nbytes, struct kvec *iov, const int nvec);
 429 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
 430                                  const char *search_name, __u64 *inode_number,
 431                                  const struct nls_table *nls_codepage,
 432                                  int remap);
 433
 434 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
 435                       const __u16 netfid, const __u8 lock_type,
 436                       const __u32 num_unlock, const __u32 num_lock,
 437                       LOCKING_ANDX_RANGE *buf);
 438 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
 439                         const __u16 netfid, const __u32 netpid, const __u64 len,
 440                         const __u64 offset, const __u32 numUnlock,
 441                         const __u32 numLock, const __u8 lockType,
 442                         const bool waitFlag, const __u8 oplock_level);
 443 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
 444                         const __u16 smb_file_id, const __u32 netpid,
 445                         const loff_t start_offset, const __u64 len,
 446                         struct file_lock *, const __u16 lock_type,
 447                         const bool waitFlag);
 448 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
 449 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 450 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
 451
 452 extern struct cifs_ses *sesInfoAlloc(void);
 453 extern void sesInfoFree(struct cifs_ses *);
 454 extern struct cifs_tcon *tconInfoAlloc(void);
 455 extern void tconInfoFree(struct cifs_tcon *);
 456
 457 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
 458                    __u32 *pexpected_response_sequence_number);
 459 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 460                           __u32 *);
 461 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 462 extern int cifs_verify_signature(struct smb_rqst *rqst,
 463                                  struct TCP_Server_Info *server,
 464                                 __u32 expected_sequence_number);
 465 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
 466                         const struct nls_table *);
 467 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
 468 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 469 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
 470 extern int calc_seckey(struct cifs_ses *);
 471 extern int generate_smb30signingkey(struct cifs_ses *);
 472 extern int generate_smb311signingkey(struct cifs_ses *);
 473
 474 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 475 extern int calc_lanman_hash(const char *password, const char *cryptkey,
 476                                 bool encrypt, char *lnm_session_key);
 477 #endif /* CIFS_WEAK_PW_HASH */
 478 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
 479 extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
 480                         const int notify_subdirs, const __u16 netfid,
 481                         __u32 filter, struct file *file, int multishot,
 482                         const struct nls_table *nls_codepage);
 483 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
 484 extern int CIFSSMBCopy(unsigned int xid,
 485                         struct cifs_tcon *source_tcon,
 486                         const char *fromName,
 487                         const __u16 target_tid,
 488                         const char *toName, const int flags,
 489                         const struct nls_table *nls_codepage,
 490                         int remap_special_chars);
 491 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
 492                         const unsigned char *searchName,
 493                         const unsigned char *ea_name, char *EAData,
 494                         size_t bufsize, struct cifs_sb_info *cifs_sb);
 495 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
 496                 const char *fileName, const char *ea_name,
 497                 const void *ea_value, const __u16 ea_value_len,
 498                 const struct nls_table *nls_codepage,
 499                 struct cifs_sb_info *cifs_sb);
 500 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
 501                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 502 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
 503                         struct cifs_ntsd *, __u32, int);
 504 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
 505                 const unsigned char *searchName,
 506                 char *acl_inf, const int buflen, const int acl_type,
 507                 const struct nls_table *nls_codepage, int remap_special_chars);
 508 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
 509                 const unsigned char *fileName,
 510                 const char *local_acl, const int buflen, const int acl_type,
 511                 const struct nls_table *nls_codepage, int remap_special_chars);
 512 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
 513                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 514 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 515 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
 516 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 517                               struct cifs_sb_info *cifs_sb,
 518                               struct cifs_fattr *fattr,
 519                               const unsigned char *path);
 520 extern int mdfour(unsigned char *, unsigned char *, int);
 521 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
 522                         const struct nls_table *codepage);
 523 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 524                         unsigned char *p24);
 525 extern void
 526 cifs_cleanup_volume_info_contents(struct smb_vol *volume_info);
 527
 528 extern struct TCP_Server_Info *
 529 cifs_find_tcp_session(struct smb_vol *vol);
 530
 531 void cifs_readdata_release(struct kref *refcount);
 532 int cifs_async_readv(struct cifs_readdata *rdata);
 533 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
 534
 535 int cifs_async_writev(struct cifs_writedata *wdata,
 536                       void (*release)(struct kref *kref));
 537 void cifs_writev_complete(struct work_struct *work);
 538 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
 539                                                 work_func_t complete);
 540 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
 541                                                 work_func_t complete);
 542 void cifs_writedata_release(struct kref *refcount);
 543 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 544                           struct cifs_sb_info *cifs_sb,
 545                           const unsigned char *path, char *pbuf,
 546                           unsigned int *pbytes_read);
 547 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 548                            struct cifs_sb_info *cifs_sb,
 549                            const unsigned char *path, char *pbuf,
 550                            unsigned int *pbytes_written);
 551 int __cifs_calc_signature(struct smb_rqst *rqst,
 552                         struct TCP_Server_Info *server, char *signature,
 553                         struct shash_desc *shash);
 554 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
 555                                         enum securityEnum);
 556 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
 557 void cifs_aio_ctx_release(struct kref *refcount);
 558 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
 559 void smb2_cached_lease_break(struct work_struct *work);
 560
 561 int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
 562                     struct sdesc **sdesc);
 563 void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
 564
 565 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
 566                                 unsigned int *len, unsigned int *offset);
 567
 568 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
 569
 570 #ifdef CONFIG_CIFS_DFS_UPCALL
 571 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
 572                                const char *old_path,
 573                                const struct nls_table *nls_codepage,
 574                                struct dfs_info3_param *referral, int remap)
 575 {
 576         return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
 577                               referral, NULL);
 578 }
 579 #endif
 580
 581 #endif                  /* _CIFSPROTO_H */