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