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_rqst;
  31 struct smb3_fs_context;
  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, "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, "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 smb3_fs_context *ctx,
  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 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
  83 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
  84                                         struct TCP_Server_Info *server);
  85 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
  86 extern void cifs_delete_mid(struct mid_q_entry *mid);
  87 extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
  88 extern void cifs_wake_up_task(struct mid_q_entry *mid);
  89 extern int cifs_handle_standard(struct TCP_Server_Info *server,
  90                                 struct mid_q_entry *mid);
  91 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
  92 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
  93 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
  94 extern int cifs_call_async(struct TCP_Server_Info *server,
  95                         struct smb_rqst *rqst,
  96                         mid_receive_t *receive, mid_callback_t *callback,
  97                         mid_handle_t *handle, void *cbdata, const int flags,
  98                         const struct cifs_credits *exist_credits);
  99 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
 100 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
 101                           struct TCP_Server_Info *server,
 102                           struct smb_rqst *rqst, int *resp_buf_type,
 103                           const int flags, struct kvec *resp_iov);
 104 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
 105                               struct TCP_Server_Info *server,
 106                               const int flags, const int num_rqst,
 107                               struct smb_rqst *rqst, int *resp_buf_type,
 108                               struct kvec *resp_iov);
 109 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
 110                         struct smb_hdr * /* input */ ,
 111                         struct smb_hdr * /* out */ ,
 112                         int * /* bytes returned */ , const int);
 113 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
 114                             char *in_buf, int flags);
 115 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
 116                                 struct TCP_Server_Info *,
 117                                 struct smb_rqst *);
 118 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
 119                                                 struct smb_rqst *);
 120 extern int cifs_check_receive(struct mid_q_entry *mid,
 121                         struct TCP_Server_Info *server, bool log_error);
 122 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
 123                                  unsigned int size, unsigned int *num,
 124                                  struct cifs_credits *credits);
 125 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
 126                         struct kvec *, int /* nvec to send */,
 127                         int * /* type of buf returned */, const int flags,
 128                         struct kvec * /* resp vec */);
 129 extern int SendReceiveBlockingLock(const unsigned int xid,
 130                         struct cifs_tcon *ptcon,
 131                         struct smb_hdr *in_buf ,
 132                         struct smb_hdr *out_buf,
 133                         int *bytes_returned);
 134 extern int cifs_reconnect(struct TCP_Server_Info *server);
 135 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
 136 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
 137 extern bool backup_cred(struct cifs_sb_info *);
 138 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
 139 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
 140                             unsigned int bytes_written);
 141 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
 142 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
 143                                   int flags,
 144                                   struct cifsFileInfo **ret_file);
 145 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
 146                                   int flags,
 147                                   struct cifsFileInfo **ret_file);
 148 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
 149 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
 150                                   struct cifsFileInfo **ret_file);
 151 extern unsigned int smbCalcSize(void *buf, struct TCP_Server_Info *server);
 152 extern int decode_negTokenInit(unsigned char *security_blob, int length,
 153                         struct TCP_Server_Info *server);
 154 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
 155 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 156 extern int map_smb_to_linux_error(char *buf, bool logErr);
 157 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
 158 extern void header_assemble(struct smb_hdr *, char /* command */ ,
 159                             const struct cifs_tcon *, int /* length of
 160                             fixed section (word count) in two byte units */);
 161 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 162                                 struct cifs_ses *ses,
 163                                 void **request_buf);
 164 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
 165                                 enum securityEnum requested);
 166 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
 167                           const struct nls_table *nls_cp);
 168 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 169 extern u64 cifs_UnixTimeToNT(struct timespec64);
 170 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 171                                       int offset);
 172 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 173 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
 174 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
 175 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
 176 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
 177                              struct file_lock *flock, const unsigned int xid);
 178 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
 179
 180 extern void cifs_down_write(struct rw_semaphore *sem);
 181 extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
 182                                               struct file *file,
 183                                               struct tcon_link *tlink,
 184                                               __u32 oplock);
 185 extern int cifs_posix_open(char *full_path, struct inode **inode,
 186                            struct super_block *sb, int mode,
 187                            unsigned int f_flags, __u32 *oplock, __u16 *netfid,
 188                            unsigned int xid);
 189 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 190 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 191                                      FILE_UNIX_BASIC_INFO *info,
 192                                      struct cifs_sb_info *cifs_sb);
 193 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
 194                                         struct cifs_sb_info *);
 195 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 196 extern struct inode *cifs_iget(struct super_block *sb,
 197                                struct cifs_fattr *fattr);
 198
 199 extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
 200                                FILE_ALL_INFO *data, struct super_block *sb,
 201                                int xid, const struct cifs_fid *fid);
 202 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
 203                         struct super_block *sb, unsigned int xid);
 204 extern int cifs_get_inode_info_unix(struct inode **pinode,
 205                         const unsigned char *search_path,
 206                         struct super_block *sb, unsigned int xid);
 207 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
 208                               unsigned int xid, char *full_path, __u32 dosattr);
 209 extern int cifs_rename_pending_delete(const char *full_path,
 210                                       struct dentry *dentry,
 211                                       const unsigned int xid);
 212 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
 213                                 struct cifs_fattr *fattr, uint sidtype);
 214 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 215                               struct cifs_fattr *fattr, struct inode *inode,
 216                               bool get_mode_from_special_sid,
 217                               const char *path, const struct cifs_fid *pfid);
 218 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
 219                                         kuid_t uid, kgid_t gid);
 220 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 221                                       const char *, u32 *, u32);
 222 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
 223                                 const struct cifs_fid *, u32 *, u32);
 224 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 225                                 const char *, int);
 226 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
 227 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
 228 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
 229
 230 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
 231 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
 232                                  unsigned int to_read);
 233 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
 234                                         struct page *page,
 235                                         unsigned int page_offset,
 236                                         unsigned int to_read);
 237 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
 238 extern int cifs_match_super(struct super_block *, void *);
 239 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
 240 extern void cifs_umount(struct cifs_sb_info *);
 241 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
 242 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
 243
 244 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
 245                                     __u64 length, __u8 type, __u16 flags,
 246                                     struct cifsLockInfo **conf_lock,
 247                                     int rw_check);
 248 extern void cifs_add_pending_open(struct cifs_fid *fid,
 249                                   struct tcon_link *tlink,
 250                                   struct cifs_pending_open *open);
 251 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
 252                                          struct tcon_link *tlink,
 253                                          struct cifs_pending_open *open);
 254 extern void cifs_del_pending_open(struct cifs_pending_open *open);
 255 extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb3_fs_context *ctx);
 256 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
 257                                  int from_reconnect);
 258 extern void cifs_put_tcon(struct cifs_tcon *tcon);
 259
 260 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
 261 extern void cifs_dfs_release_automount_timer(void);
 262 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 263 #define cifs_dfs_release_automount_timer()      do { } while (0)
 264 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 265
 266 void cifs_proc_init(void);
 267 void cifs_proc_clean(void);
 268
 269 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
 270 extern void cifs_free_llist(struct list_head *llist);
 271 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
 272
 273 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
 274                              const struct nls_table *nlsc);
 275
 276 extern int cifs_negotiate_protocol(const unsigned int xid,
 277                                    struct cifs_ses *ses);
 278 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 279                               struct nls_table *nls_info);
 280 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
 281 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
 282
 283 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
 284                     const char *tree, struct cifs_tcon *tcon,
 285                     const struct nls_table *);
 286
 287 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
 288                 const char *searchName, struct cifs_sb_info *cifs_sb,
 289                 __u16 *searchHandle, __u16 search_flags,
 290                 struct cifs_search_info *psrch_inf,
 291                 bool msearch);
 292
 293 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
 294                 __u16 searchHandle, __u16 search_flags,
 295                 struct cifs_search_info *psrch_inf);
 296
 297 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
 298                         const __u16 search_handle);
 299
 300 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 301                         u16 netfid, FILE_ALL_INFO *pFindData);
 302 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 303                             const char *search_Name, FILE_ALL_INFO *data,
 304                             int legacy /* whether to use old info level */,
 305                             const struct nls_table *nls_codepage, int remap);
 306 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
 307                                const char *search_name, FILE_ALL_INFO *data,
 308                                const struct nls_table *nls_codepage, int remap);
 309
 310 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 311                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 312 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
 313                         struct cifs_tcon *tcon,
 314                         const unsigned char *searchName,
 315                         FILE_UNIX_BASIC_INFO *pFindData,
 316                         const struct nls_table *nls_codepage, int remap);
 317
 318 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
 319                            const char *search_name,
 320                            struct dfs_info3_param **target_nodes,
 321                            unsigned int *num_of_nodes,
 322                            const struct nls_table *nls_codepage, int remap);
 323
 324 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
 325                                unsigned int *num_of_nodes,
 326                                struct dfs_info3_param **target_nodes,
 327                                const struct nls_table *nls_codepage, int remap,
 328                                const char *searchName, bool is_unicode);
 329 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
 330                                  struct cifs_sb_info *cifs_sb,
 331                                  struct smb3_fs_context *ctx);
 332 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 333                         struct kstatfs *FSData);
 334 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 335                         struct kstatfs *FSData);
 336 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 337                         __u64 cap);
 338
 339 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
 340                         struct cifs_tcon *tcon);
 341 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
 342 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
 343 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 344                         struct kstatfs *FSData);
 345
 346 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 347                         const char *fileName, const FILE_BASIC_INFO *data,
 348                         const struct nls_table *nls_codepage,
 349                         struct cifs_sb_info *cifs_sb);
 350 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 351                         const FILE_BASIC_INFO *data, __u16 fid,
 352                         __u32 pid_of_opener);
 353 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
 354                                      struct cifs_tcon *tcon,
 355                                      bool delete_file, __u16 fid,
 356                                      __u32 pid_of_opener);
 357 #if 0
 358 extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,
 359                         char *fileName, __u16 dos_attributes,
 360                         const struct nls_table *nls_codepage);
 361 #endif /* possibly unneeded function */
 362 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
 363                          const char *file_name, __u64 size,
 364                          struct cifs_sb_info *cifs_sb, bool set_allocation);
 365 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 366                               struct cifsFileInfo *cfile, __u64 size,
 367                               bool set_allocation);
 368
 369 struct cifs_unix_set_info_args {
 370         __u64   ctime;
 371         __u64   atime;
 372         __u64   mtime;
 373         __u64   mode;
 374         kuid_t  uid;
 375         kgid_t  gid;
 376         dev_t   device;
 377 };
 378
 379 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 380                                   struct cifs_tcon *tcon,
 381                                   const struct cifs_unix_set_info_args *args,
 382                                   u16 fid, u32 pid_of_opener);
 383
 384 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
 385                                   struct cifs_tcon *tcon, const char *file_name,
 386                                   const struct cifs_unix_set_info_args *args,
 387                                   const struct nls_table *nls_codepage,
 388                                   int remap);
 389
 390 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
 391                         umode_t mode, struct cifs_tcon *tcon,
 392                         const char *name, struct cifs_sb_info *cifs_sb);
 393 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
 394                         const char *name, struct cifs_sb_info *cifs_sb);
 395 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 396                         const char *name, __u16 type,
 397                         const struct nls_table *nls_codepage,
 398                         int remap_special_chars);
 399 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 400                           const char *name, struct cifs_sb_info *cifs_sb);
 401 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
 402                          const char *from_name, const char *to_name,
 403                          struct cifs_sb_info *cifs_sb);
 404 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
 405                                  int netfid, const char *target_name,
 406                                  const struct nls_table *nls_codepage,
 407                                  int remap_special_chars);
 408 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
 409                               const char *from_name, const char *to_name,
 410                               struct cifs_sb_info *cifs_sb);
 411 extern int CIFSUnixCreateHardLink(const unsigned int xid,
 412                         struct cifs_tcon *tcon,
 413                         const char *fromName, const char *toName,
 414                         const struct nls_table *nls_codepage,
 415                         int remap_special_chars);
 416 extern int CIFSUnixCreateSymLink(const unsigned int xid,
 417                         struct cifs_tcon *tcon,
 418                         const char *fromName, const char *toName,
 419                         const struct nls_table *nls_codepage, int remap);
 420 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
 421                         struct cifs_tcon *tcon,
 422                         const unsigned char *searchName, char **syminfo,
 423                         const struct nls_table *nls_codepage, int remap);
 424 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 425                                __u16 fid, char **symlinkinfo,
 426                                const struct nls_table *nls_codepage);
 427 extern int CIFSSMB_set_compression(const unsigned int xid,
 428                                    struct cifs_tcon *tcon, __u16 fid);
 429 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
 430                      int *oplock, FILE_ALL_INFO *buf);
 431 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
 432                         const char *fileName, const int disposition,
 433                         const int access_flags, const int omode,
 434                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 435                         const struct nls_table *nls_codepage, int remap);
 436 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
 437                         u32 posix_flags, __u64 mode, __u16 *netfid,
 438                         FILE_UNIX_BASIC_INFO *pRetData,
 439                         __u32 *pOplock, const char *name,
 440                         const struct nls_table *nls_codepage, int remap);
 441 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
 442                         const int smb_file_id);
 443
 444 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
 445                         const int smb_file_id);
 446
 447 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
 448                         unsigned int *nbytes, char **buf,
 449                         int *return_buf_type);
 450 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
 451                         unsigned int *nbytes, const char *buf);
 452 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
 453                         unsigned int *nbytes, struct kvec *iov, const int nvec);
 454 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
 455                                  const char *search_name, __u64 *inode_number,
 456                                  const struct nls_table *nls_codepage,
 457                                  int remap);
 458
 459 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
 460                       const __u16 netfid, const __u8 lock_type,
 461                       const __u32 num_unlock, const __u32 num_lock,
 462                       LOCKING_ANDX_RANGE *buf);
 463 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
 464                         const __u16 netfid, const __u32 netpid, const __u64 len,
 465                         const __u64 offset, const __u32 numUnlock,
 466                         const __u32 numLock, const __u8 lockType,
 467                         const bool waitFlag, const __u8 oplock_level);
 468 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
 469                         const __u16 smb_file_id, const __u32 netpid,
 470                         const loff_t start_offset, const __u64 len,
 471                         struct file_lock *, const __u16 lock_type,
 472                         const bool waitFlag);
 473 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
 474 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 475 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
 476
 477 extern struct cifs_ses *sesInfoAlloc(void);
 478 extern void sesInfoFree(struct cifs_ses *);
 479 extern struct cifs_tcon *tconInfoAlloc(void);
 480 extern void tconInfoFree(struct cifs_tcon *);
 481
 482 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
 483                    __u32 *pexpected_response_sequence_number);
 484 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 485                           __u32 *);
 486 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 487 extern int cifs_verify_signature(struct smb_rqst *rqst,
 488                                  struct TCP_Server_Info *server,
 489                                 __u32 expected_sequence_number);
 490 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
 491                         const struct nls_table *);
 492 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
 493 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 494 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
 495 extern int calc_seckey(struct cifs_ses *);
 496 extern int generate_smb30signingkey(struct cifs_ses *);
 497 extern int generate_smb311signingkey(struct cifs_ses *);
 498
 499 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 500 extern int calc_lanman_hash(const char *password, const char *cryptkey,
 501                                 bool encrypt, char *lnm_session_key);
 502 #endif /* CIFS_WEAK_PW_HASH */
 503 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
 504 extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
 505                         const int notify_subdirs, const __u16 netfid,
 506                         __u32 filter, struct file *file, int multishot,
 507                         const struct nls_table *nls_codepage);
 508 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
 509 extern int CIFSSMBCopy(unsigned int xid,
 510                         struct cifs_tcon *source_tcon,
 511                         const char *fromName,
 512                         const __u16 target_tid,
 513                         const char *toName, const int flags,
 514                         const struct nls_table *nls_codepage,
 515                         int remap_special_chars);
 516 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
 517                         const unsigned char *searchName,
 518                         const unsigned char *ea_name, char *EAData,
 519                         size_t bufsize, struct cifs_sb_info *cifs_sb);
 520 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
 521                 const char *fileName, const char *ea_name,
 522                 const void *ea_value, const __u16 ea_value_len,
 523                 const struct nls_table *nls_codepage,
 524                 struct cifs_sb_info *cifs_sb);
 525 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
 526                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 527 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
 528                         struct cifs_ntsd *, __u32, int);
 529 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
 530                 const unsigned char *searchName,
 531                 char *acl_inf, const int buflen, const int acl_type,
 532                 const struct nls_table *nls_codepage, int remap_special_chars);
 533 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
 534                 const unsigned char *fileName,
 535                 const char *local_acl, const int buflen, const int acl_type,
 536                 const struct nls_table *nls_codepage, int remap_special_chars);
 537 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
 538                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 539 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 540 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
 541 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 542                               struct cifs_sb_info *cifs_sb,
 543                               struct cifs_fattr *fattr,
 544                               const unsigned char *path);
 545 extern int mdfour(unsigned char *, unsigned char *, int);
 546 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
 547                         const struct nls_table *codepage);
 548 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 549                         unsigned char *p24);
 550
 551 extern int
 552 cifs_setup_volume_info(struct smb3_fs_context *ctx);
 553
 554 extern struct TCP_Server_Info *
 555 cifs_find_tcp_session(struct smb3_fs_context *ctx);
 556
 557 extern void cifs_put_smb_ses(struct cifs_ses *ses);
 558
 559 extern struct cifs_ses *
 560 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
 561
 562 void cifs_readdata_release(struct kref *refcount);
 563 int cifs_async_readv(struct cifs_readdata *rdata);
 564 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
 565
 566 int cifs_async_writev(struct cifs_writedata *wdata,
 567                       void (*release)(struct kref *kref));
 568 void cifs_writev_complete(struct work_struct *work);
 569 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
 570                                                 work_func_t complete);
 571 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
 572                                                 work_func_t complete);
 573 void cifs_writedata_release(struct kref *refcount);
 574 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 575                           struct cifs_sb_info *cifs_sb,
 576                           const unsigned char *path, char *pbuf,
 577                           unsigned int *pbytes_read);
 578 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 579                            struct cifs_sb_info *cifs_sb,
 580                            const unsigned char *path, char *pbuf,
 581                            unsigned int *pbytes_written);
 582 int __cifs_calc_signature(struct smb_rqst *rqst,
 583                         struct TCP_Server_Info *server, char *signature,
 584                         struct shash_desc *shash);
 585 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
 586                                         enum securityEnum);
 587 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
 588 void cifs_aio_ctx_release(struct kref *refcount);
 589 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
 590 void smb2_cached_lease_break(struct work_struct *work);
 591
 592 int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
 593                     struct sdesc **sdesc);
 594 void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
 595
 596 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
 597                                 unsigned int *len, unsigned int *offset);
 598 struct cifs_chan *
 599 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
 600 int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
 601 bool is_server_using_iface(struct TCP_Server_Info *server,
 602                            struct cifs_server_iface *iface);
 603 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
 604
 605 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
 606 int copy_path_name(char *dst, const char *src);
 607 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
 608                                int resp_buftype,
 609                                struct cifs_search_info *srch_inf);
 610
 611 struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
 612 void cifs_put_tcp_super(struct super_block *sb);
 613 int update_super_prepath(struct cifs_tcon *tcon, char *prefix);
 614 char *extract_hostname(const char *unc);
 615 char *extract_sharename(const char *unc);
 616
 617 #ifdef CONFIG_CIFS_DFS_UPCALL
 618 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
 619                                const char *old_path,
 620                                const struct nls_table *nls_codepage,
 621                                struct dfs_info3_param *referral, int remap)
 622 {
 623         return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
 624                               referral, NULL);
 625 }
 626
 627 int match_target_ip(struct TCP_Server_Info *server,
 628                     const char *share, size_t share_len,
 629                     bool *result);
 630 #endif
 631
 632 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
 633 {
 634         if (cifs_sb && (backup_cred(cifs_sb)))
 635                 return options | CREATE_OPEN_BACKUP_INTENT;
 636         else
 637                 return options;
 638 }
 639
 640 #endif                  /* _CIFSPROTO_H */