fs/cifs/cifsproto.h

   1 /* SPDX-License-Identifier: LGPL-2.1 */
   2 /*
   3  *
   4  *   Copyright (c) International Business Machines  Corp., 2002,2008
   5  *   Author(s): Steve French (sfrench@us.ibm.com)
   6  *
   7  */
   8 #ifndef _CIFSPROTO_H
   9 #define _CIFSPROTO_H
  10 #include <linux/nls.h>
  11 #include "trace.h"
  12 #ifdef CONFIG_CIFS_DFS_UPCALL
  13 #include "dfs_cache.h"
  14 #endif
  15
  16 struct statfs;
  17 struct smb_rqst;
  18 struct smb3_fs_context;
  19
  20 /*
  21  *****************************************************************
  22  * All Prototypes
  23  *****************************************************************
  24  */
  25
  26 extern struct smb_hdr *cifs_buf_get(void);
  27 extern void cifs_buf_release(void *);
  28 extern struct smb_hdr *cifs_small_buf_get(void);
  29 extern void cifs_small_buf_release(void *);
  30 extern void free_rsp_buf(int, void *);
  31 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
  32                         unsigned int /* length */);
  33 extern unsigned int _get_xid(void);
  34 extern void _free_xid(unsigned int);
  35 #define get_xid()                                                       \
  36 ({                                                                      \
  37         unsigned int __xid = _get_xid();                                \
  38         cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n",           \
  39                  __func__, __xid,                                       \
  40                  from_kuid(&init_user_ns, current_fsuid()));            \
  41         trace_smb3_enter(__xid, __func__);                              \
  42         __xid;                                                          \
  43 })
  44
  45 #define free_xid(curr_xid)                                              \
  46 do {                                                                    \
  47         _free_xid(curr_xid);                                            \
  48         cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n",           \
  49                  __func__, curr_xid, (int)rc);                          \
  50         if (rc)                                                         \
  51                 trace_smb3_exit_err(curr_xid, __func__, (int)rc);       \
  52         else                                                            \
  53                 trace_smb3_exit_done(curr_xid, __func__);               \
  54 } while (0)
  55 extern int init_cifs_idmap(void);
  56 extern void exit_cifs_idmap(void);
  57 extern int init_cifs_spnego(void);
  58 extern void exit_cifs_spnego(void);
  59 extern const char *build_path_from_dentry(struct dentry *, void *);
  60 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
  61                                                     void *page, bool prefix);
  62 static inline void *alloc_dentry_path(void)
  63 {
  64         return __getname();
  65 }
  66
  67 static inline void free_dentry_path(void *page)
  68 {
  69         if (page)
  70                 __putname(page);
  71 }
  72
  73 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
  74                                      struct cifs_sb_info *cifs_sb,
  75                                      struct cifs_tcon *tcon,
  76                                      int add_treename);
  77 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
  78 extern char *cifs_compose_mount_options(const char *sb_mountdata,
  79                 const char *fullpath, const struct dfs_info3_param *ref,
  80                 char **devname);
  81 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
  82 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
  83                                         struct TCP_Server_Info *server);
  84 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
  85 extern void cifs_delete_mid(struct mid_q_entry *mid);
  86 extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
  87 extern void cifs_wake_up_task(struct mid_q_entry *mid);
  88 extern int cifs_handle_standard(struct TCP_Server_Info *server,
  89                                 struct mid_q_entry *mid);
  90 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
  91 extern int smb3_parse_opt(const char *options, const char *key, char **val);
  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(const 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 int 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, const 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 ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
 234                                         size_t to_read);
 235 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
 236                                         struct page *page,
 237                                         unsigned int page_offset,
 238                                         unsigned int to_read);
 239 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
 240 extern int cifs_match_super(struct super_block *, void *);
 241 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
 242 extern void cifs_umount(struct cifs_sb_info *);
 243 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
 244 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
 245
 246 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
 247                                     __u64 length, __u8 type, __u16 flags,
 248                                     struct cifsLockInfo **conf_lock,
 249                                     int rw_check);
 250 extern void cifs_add_pending_open(struct cifs_fid *fid,
 251                                   struct tcon_link *tlink,
 252                                   struct cifs_pending_open *open);
 253 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
 254                                          struct tcon_link *tlink,
 255                                          struct cifs_pending_open *open);
 256 extern void cifs_del_pending_open(struct cifs_pending_open *open);
 257
 258 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
 259                                 struct cifs_deferred_close **dclose);
 260
 261 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
 262                                 struct cifs_deferred_close *dclose);
 263
 264 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
 265
 266 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
 267
 268 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
 269
 270 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
 271                                 const char *path);
 272
 273 extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb3_fs_context *ctx);
 274 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
 275                                  int from_reconnect);
 276 extern void cifs_put_tcon(struct cifs_tcon *tcon);
 277
 278 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
 279 extern void cifs_dfs_release_automount_timer(void);
 280 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 281 #define cifs_dfs_release_automount_timer()      do { } while (0)
 282 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 283
 284 void cifs_proc_init(void);
 285 void cifs_proc_clean(void);
 286
 287 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
 288 extern void cifs_free_llist(struct list_head *llist);
 289 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
 290
 291 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
 292                              const struct nls_table *nlsc);
 293
 294 extern int cifs_negotiate_protocol(const unsigned int xid,
 295                                    struct cifs_ses *ses);
 296 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 297                               struct nls_table *nls_info);
 298 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
 299 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
 300
 301 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
 302                     const char *tree, struct cifs_tcon *tcon,
 303                     const struct nls_table *);
 304
 305 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
 306                 const char *searchName, struct cifs_sb_info *cifs_sb,
 307                 __u16 *searchHandle, __u16 search_flags,
 308                 struct cifs_search_info *psrch_inf,
 309                 bool msearch);
 310
 311 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
 312                 __u16 searchHandle, __u16 search_flags,
 313                 struct cifs_search_info *psrch_inf);
 314
 315 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
 316                         const __u16 search_handle);
 317
 318 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 319                         u16 netfid, FILE_ALL_INFO *pFindData);
 320 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 321                             const char *search_Name, FILE_ALL_INFO *data,
 322                             int legacy /* whether to use old info level */,
 323                             const struct nls_table *nls_codepage, int remap);
 324 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
 325                                const char *search_name, FILE_ALL_INFO *data,
 326                                const struct nls_table *nls_codepage, int remap);
 327
 328 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 329                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 330 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
 331                         struct cifs_tcon *tcon,
 332                         const unsigned char *searchName,
 333                         FILE_UNIX_BASIC_INFO *pFindData,
 334                         const struct nls_table *nls_codepage, int remap);
 335
 336 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
 337                            const char *search_name,
 338                            struct dfs_info3_param **target_nodes,
 339                            unsigned int *num_of_nodes,
 340                            const struct nls_table *nls_codepage, int remap);
 341
 342 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
 343                                unsigned int *num_of_nodes,
 344                                struct dfs_info3_param **target_nodes,
 345                                const struct nls_table *nls_codepage, int remap,
 346                                const char *searchName, bool is_unicode);
 347 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
 348                                  struct cifs_sb_info *cifs_sb,
 349                                  struct smb3_fs_context *ctx);
 350 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 351                         struct kstatfs *FSData);
 352 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 353                         struct kstatfs *FSData);
 354 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 355                         __u64 cap);
 356
 357 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
 358                         struct cifs_tcon *tcon);
 359 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
 360 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
 361 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 362                         struct kstatfs *FSData);
 363
 364 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 365                         const char *fileName, const FILE_BASIC_INFO *data,
 366                         const struct nls_table *nls_codepage,
 367                         struct cifs_sb_info *cifs_sb);
 368 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 369                         const FILE_BASIC_INFO *data, __u16 fid,
 370                         __u32 pid_of_opener);
 371 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
 372                                      struct cifs_tcon *tcon,
 373                                      bool delete_file, __u16 fid,
 374                                      __u32 pid_of_opener);
 375 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
 376                          const char *file_name, __u64 size,
 377                          struct cifs_sb_info *cifs_sb, bool set_allocation);
 378 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 379                               struct cifsFileInfo *cfile, __u64 size,
 380                               bool set_allocation);
 381
 382 struct cifs_unix_set_info_args {
 383         __u64   ctime;
 384         __u64   atime;
 385         __u64   mtime;
 386         __u64   mode;
 387         kuid_t  uid;
 388         kgid_t  gid;
 389         dev_t   device;
 390 };
 391
 392 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 393                                   struct cifs_tcon *tcon,
 394                                   const struct cifs_unix_set_info_args *args,
 395                                   u16 fid, u32 pid_of_opener);
 396
 397 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
 398                                   struct cifs_tcon *tcon, const char *file_name,
 399                                   const struct cifs_unix_set_info_args *args,
 400                                   const struct nls_table *nls_codepage,
 401                                   int remap);
 402
 403 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
 404                         umode_t mode, struct cifs_tcon *tcon,
 405                         const char *name, struct cifs_sb_info *cifs_sb);
 406 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
 407                         const char *name, struct cifs_sb_info *cifs_sb);
 408 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 409                         const char *name, __u16 type,
 410                         const struct nls_table *nls_codepage,
 411                         int remap_special_chars);
 412 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 413                           const char *name, struct cifs_sb_info *cifs_sb);
 414 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
 415                          const char *from_name, const char *to_name,
 416                          struct cifs_sb_info *cifs_sb);
 417 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
 418                                  int netfid, const char *target_name,
 419                                  const struct nls_table *nls_codepage,
 420                                  int remap_special_chars);
 421 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
 422                               const char *from_name, const char *to_name,
 423                               struct cifs_sb_info *cifs_sb);
 424 extern int CIFSUnixCreateHardLink(const unsigned int xid,
 425                         struct cifs_tcon *tcon,
 426                         const char *fromName, const char *toName,
 427                         const struct nls_table *nls_codepage,
 428                         int remap_special_chars);
 429 extern int CIFSUnixCreateSymLink(const unsigned int xid,
 430                         struct cifs_tcon *tcon,
 431                         const char *fromName, const char *toName,
 432                         const struct nls_table *nls_codepage, int remap);
 433 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
 434                         struct cifs_tcon *tcon,
 435                         const unsigned char *searchName, char **syminfo,
 436                         const struct nls_table *nls_codepage, int remap);
 437 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 438                                __u16 fid, char **symlinkinfo,
 439                                const struct nls_table *nls_codepage);
 440 extern int CIFSSMB_set_compression(const unsigned int xid,
 441                                    struct cifs_tcon *tcon, __u16 fid);
 442 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
 443                      int *oplock, FILE_ALL_INFO *buf);
 444 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
 445                         const char *fileName, const int disposition,
 446                         const int access_flags, const int omode,
 447                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 448                         const struct nls_table *nls_codepage, int remap);
 449 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
 450                         u32 posix_flags, __u64 mode, __u16 *netfid,
 451                         FILE_UNIX_BASIC_INFO *pRetData,
 452                         __u32 *pOplock, const char *name,
 453                         const struct nls_table *nls_codepage, int remap);
 454 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
 455                         const int smb_file_id);
 456
 457 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
 458                         const int smb_file_id);
 459
 460 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
 461                         unsigned int *nbytes, char **buf,
 462                         int *return_buf_type);
 463 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
 464                         unsigned int *nbytes, const char *buf);
 465 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
 466                         unsigned int *nbytes, struct kvec *iov, const int nvec);
 467 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
 468                                  const char *search_name, __u64 *inode_number,
 469                                  const struct nls_table *nls_codepage,
 470                                  int remap);
 471
 472 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
 473                       const __u16 netfid, const __u8 lock_type,
 474                       const __u32 num_unlock, const __u32 num_lock,
 475                       LOCKING_ANDX_RANGE *buf);
 476 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
 477                         const __u16 netfid, const __u32 netpid, const __u64 len,
 478                         const __u64 offset, const __u32 numUnlock,
 479                         const __u32 numLock, const __u8 lockType,
 480                         const bool waitFlag, const __u8 oplock_level);
 481 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
 482                         const __u16 smb_file_id, const __u32 netpid,
 483                         const loff_t start_offset, const __u64 len,
 484                         struct file_lock *, const __u16 lock_type,
 485                         const bool waitFlag);
 486 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
 487 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 488 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
 489
 490 extern struct cifs_ses *sesInfoAlloc(void);
 491 extern void sesInfoFree(struct cifs_ses *);
 492 extern struct cifs_tcon *tconInfoAlloc(void);
 493 extern void tconInfoFree(struct cifs_tcon *);
 494
 495 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
 496                    __u32 *pexpected_response_sequence_number);
 497 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 498                           __u32 *);
 499 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 500 extern int cifs_verify_signature(struct smb_rqst *rqst,
 501                                  struct TCP_Server_Info *server,
 502                                 __u32 expected_sequence_number);
 503 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 504 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
 505 extern int calc_seckey(struct cifs_ses *);
 506 extern int generate_smb30signingkey(struct cifs_ses *);
 507 extern int generate_smb311signingkey(struct cifs_ses *);
 508
 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 E_md4hash(const unsigned char *passwd, unsigned char *p16,
 546                         const struct nls_table *codepage);
 547
 548 extern int
 549 cifs_setup_volume_info(struct smb3_fs_context *ctx, const char *mntopts, const char *devname);
 550
 551 extern struct TCP_Server_Info *
 552 cifs_find_tcp_session(struct smb3_fs_context *ctx);
 553
 554 extern void cifs_put_smb_ses(struct cifs_ses *ses);
 555
 556 extern struct cifs_ses *
 557 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
 558
 559 void cifs_readdata_release(struct kref *refcount);
 560 int cifs_async_readv(struct cifs_readdata *rdata);
 561 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
 562
 563 int cifs_async_writev(struct cifs_writedata *wdata,
 564                       void (*release)(struct kref *kref));
 565 void cifs_writev_complete(struct work_struct *work);
 566 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
 567                                                 work_func_t complete);
 568 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
 569                                                 work_func_t complete);
 570 void cifs_writedata_release(struct kref *refcount);
 571 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 572                           struct cifs_sb_info *cifs_sb,
 573                           const unsigned char *path, char *pbuf,
 574                           unsigned int *pbytes_read);
 575 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 576                            struct cifs_sb_info *cifs_sb,
 577                            const unsigned char *path, char *pbuf,
 578                            unsigned int *pbytes_written);
 579 int __cifs_calc_signature(struct smb_rqst *rqst,
 580                         struct TCP_Server_Info *server, char *signature,
 581                         struct shash_desc *shash);
 582 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
 583                                         enum securityEnum);
 584 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
 585 void cifs_aio_ctx_release(struct kref *refcount);
 586 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
 587 void smb2_cached_lease_break(struct work_struct *work);
 588
 589 int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
 590                     struct sdesc **sdesc);
 591 void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
 592
 593 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
 594                                 unsigned int *len, unsigned int *offset);
 595 struct cifs_chan *
 596 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
 597 int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
 598 bool is_server_using_iface(struct TCP_Server_Info *server,
 599                            struct cifs_server_iface *iface);
 600 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
 601
 602 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
 603 int copy_path_name(char *dst, const char *src);
 604 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
 605                                int resp_buftype,
 606                                struct cifs_search_info *srch_inf);
 607
 608 struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
 609 void cifs_put_tcp_super(struct super_block *sb);
 610 int update_super_prepath(struct cifs_tcon *tcon, char *prefix);
 611 char *extract_hostname(const char *unc);
 612 char *extract_sharename(const char *unc);
 613
 614 #ifdef CONFIG_CIFS_DFS_UPCALL
 615 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
 616                                const char *old_path,
 617                                const struct nls_table *nls_codepage,
 618                                struct dfs_info3_param *referral, int remap)
 619 {
 620         return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
 621                               referral, NULL);
 622 }
 623
 624 int match_target_ip(struct TCP_Server_Info *server,
 625                     const char *share, size_t share_len,
 626                     bool *result);
 627 #endif
 628
 629 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
 630 {
 631         if (cifs_sb && (backup_cred(cifs_sb)))
 632                 return options | CREATE_OPEN_BACKUP_INTENT;
 633         else
 634                 return options;
 635 }
 636
 637 #endif                  /* _CIFSPROTO_H */