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 delete_mid(struct mid_q_entry *mid);
  82 extern void release_mid(struct mid_q_entry *mid);
  83 extern void cifs_wake_up_task(struct mid_q_entry *mid);
  84 extern int cifs_handle_standard(struct TCP_Server_Info *server,
  85                                 struct mid_q_entry *mid);
  86 extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
  87 extern int smb3_parse_opt(const char *options, const char *key, char **val);
  88 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
  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                         const struct cifs_credits *exist_credits);
  95 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
  96 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
  97                           struct TCP_Server_Info *server,
  98                           struct smb_rqst *rqst, int *resp_buf_type,
  99                           const int flags, struct kvec *resp_iov);
 100 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
 101                               struct TCP_Server_Info *server,
 102                               const int flags, const int num_rqst,
 103                               struct smb_rqst *rqst, int *resp_buf_type,
 104                               struct kvec *resp_iov);
 105 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
 106                         struct smb_hdr * /* input */ ,
 107                         struct smb_hdr * /* out */ ,
 108                         int * /* bytes returned */ , const int);
 109 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
 110                             char *in_buf, int flags);
 111 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
 112                                 struct TCP_Server_Info *,
 113                                 struct smb_rqst *);
 114 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
 115                                                 struct smb_rqst *);
 116 extern int cifs_check_receive(struct mid_q_entry *mid,
 117                         struct TCP_Server_Info *server, bool log_error);
 118 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
 119                                  unsigned int size, unsigned int *num,
 120                                  struct cifs_credits *credits);
 121 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
 122                         struct kvec *, int /* nvec to send */,
 123                         int * /* type of buf returned */, const int flags,
 124                         struct kvec * /* resp vec */);
 125 extern int SendReceiveBlockingLock(const unsigned int xid,
 126                         struct cifs_tcon *ptcon,
 127                         struct smb_hdr *in_buf ,
 128                         struct smb_hdr *out_buf,
 129                         int *bytes_returned);
 130 void
 131 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
 132                                       bool all_channels);
 133 void
 134 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
 135                                       bool mark_smb_session);
 136 extern int cifs_reconnect(struct TCP_Server_Info *server,
 137                           bool mark_smb_session);
 138 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
 139 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
 140 extern bool backup_cred(struct cifs_sb_info *);
 141 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
 142 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
 143                             unsigned int bytes_written);
 144 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
 145 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
 146                                   int flags,
 147                                   struct cifsFileInfo **ret_file);
 148 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
 149                                   int flags,
 150                                   struct cifsFileInfo **ret_file);
 151 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
 152 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
 153                                   struct cifsFileInfo **ret_file);
 154 extern unsigned int smbCalcSize(void *buf);
 155 extern int decode_negTokenInit(unsigned char *security_blob, int length,
 156                         struct TCP_Server_Info *server);
 157 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
 158 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 159 extern int map_smb_to_linux_error(char *buf, bool logErr);
 160 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
 161 extern void header_assemble(struct smb_hdr *, char /* command */ ,
 162                             const struct cifs_tcon *, int /* length of
 163                             fixed section (word count) in two byte units */);
 164 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 165                                 struct cifs_ses *ses,
 166                                 void **request_buf);
 167 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
 168                                 enum securityEnum requested);
 169 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
 170                           struct TCP_Server_Info *server,
 171                           const struct nls_table *nls_cp);
 172 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 173 extern u64 cifs_UnixTimeToNT(struct timespec64);
 174 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 175                                       int offset);
 176 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 177 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
 178 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
 179 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
 180 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
 181                              struct file_lock *flock, const unsigned int xid);
 182 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
 183
 184 extern void cifs_down_write(struct rw_semaphore *sem);
 185 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
 186                                        struct tcon_link *tlink, __u32 oplock,
 187                                        const char *symlink_target);
 188 extern int cifs_posix_open(const char *full_path, struct inode **inode,
 189                            struct super_block *sb, int mode,
 190                            unsigned int f_flags, __u32 *oplock, __u16 *netfid,
 191                            unsigned int xid);
 192 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 193 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 194                                      FILE_UNIX_BASIC_INFO *info,
 195                                      struct cifs_sb_info *cifs_sb);
 196 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
 197                                         struct cifs_sb_info *);
 198 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 199 extern struct inode *cifs_iget(struct super_block *sb,
 200                                struct cifs_fattr *fattr);
 201
 202 int cifs_get_inode_info(struct inode **inode, const char *full_path,
 203                         struct cifs_open_info_data *data, struct super_block *sb, int xid,
 204                         const struct cifs_fid *fid);
 205 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
 206                         struct super_block *sb, unsigned int xid);
 207 extern int cifs_get_inode_info_unix(struct inode **pinode,
 208                         const unsigned char *search_path,
 209                         struct super_block *sb, unsigned int xid);
 210 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
 211                               unsigned int xid, const char *full_path, __u32 dosattr);
 212 extern int cifs_rename_pending_delete(const char *full_path,
 213                                       struct dentry *dentry,
 214                                       const unsigned int xid);
 215 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
 216                                 struct cifs_fattr *fattr, uint sidtype);
 217 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 218                               struct cifs_fattr *fattr, struct inode *inode,
 219                               bool get_mode_from_special_sid,
 220                               const char *path, const struct cifs_fid *pfid);
 221 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
 222                                         kuid_t uid, kgid_t gid);
 223 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 224                                       const char *, u32 *, u32);
 225 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
 226                                 const struct cifs_fid *, u32 *, u32);
 227 extern struct posix_acl *cifs_get_acl(struct user_namespace *mnt_userns,
 228                                       struct dentry *dentry, int type);
 229 extern int cifs_set_acl(struct user_namespace *mnt_userns,
 230                         struct dentry *dentry, struct posix_acl *acl, int type);
 231 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 232                                 const char *, int);
 233 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
 234 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
 235 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
 236
 237 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
 238 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
 239                                  unsigned int to_read);
 240 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
 241                                         size_t to_read);
 242 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
 243                                         struct page *page,
 244                                         unsigned int page_offset,
 245                                         unsigned int to_read);
 246 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
 247 extern int cifs_match_super(struct super_block *, void *);
 248 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
 249 extern void cifs_umount(struct cifs_sb_info *);
 250 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
 251 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
 252
 253 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
 254                                     __u64 length, __u8 type, __u16 flags,
 255                                     struct cifsLockInfo **conf_lock,
 256                                     int rw_check);
 257 extern void cifs_add_pending_open(struct cifs_fid *fid,
 258                                   struct tcon_link *tlink,
 259                                   struct cifs_pending_open *open);
 260 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
 261                                          struct tcon_link *tlink,
 262                                          struct cifs_pending_open *open);
 263 extern void cifs_del_pending_open(struct cifs_pending_open *open);
 264
 265 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
 266                                 struct cifs_deferred_close **dclose);
 267
 268 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
 269                                 struct cifs_deferred_close *dclose);
 270
 271 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
 272
 273 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
 274
 275 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
 276
 277 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
 278                                 const char *path);
 279 extern struct TCP_Server_Info *
 280 cifs_get_tcp_session(struct smb3_fs_context *ctx,
 281                      struct TCP_Server_Info *primary_server);
 282 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
 283                                  int from_reconnect);
 284 extern void cifs_put_tcon(struct cifs_tcon *tcon);
 285
 286 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
 287 extern void cifs_dfs_release_automount_timer(void);
 288 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 289 #define cifs_dfs_release_automount_timer()      do { } while (0)
 290 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 291
 292 void cifs_proc_init(void);
 293 void cifs_proc_clean(void);
 294
 295 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
 296 extern void cifs_free_llist(struct list_head *llist);
 297 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
 298
 299 extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
 300                              const struct nls_table *nlsc);
 301
 302 extern int cifs_negotiate_protocol(const unsigned int xid,
 303                                    struct cifs_ses *ses,
 304                                    struct TCP_Server_Info *server);
 305 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 306                               struct TCP_Server_Info *server,
 307                               struct nls_table *nls_info);
 308 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
 309 extern int CIFSSMBNegotiate(const unsigned int xid,
 310                             struct cifs_ses *ses,
 311                             struct TCP_Server_Info *server);
 312
 313 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
 314                     const char *tree, struct cifs_tcon *tcon,
 315                     const struct nls_table *);
 316
 317 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
 318                 const char *searchName, struct cifs_sb_info *cifs_sb,
 319                 __u16 *searchHandle, __u16 search_flags,
 320                 struct cifs_search_info *psrch_inf,
 321                 bool msearch);
 322
 323 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
 324                 __u16 searchHandle, __u16 search_flags,
 325                 struct cifs_search_info *psrch_inf);
 326
 327 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
 328                         const __u16 search_handle);
 329
 330 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 331                         u16 netfid, FILE_ALL_INFO *pFindData);
 332 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 333                             const char *search_Name, FILE_ALL_INFO *data,
 334                             int legacy /* whether to use old info level */,
 335                             const struct nls_table *nls_codepage, int remap);
 336 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
 337                                const char *search_name, FILE_ALL_INFO *data,
 338                                const struct nls_table *nls_codepage, int remap);
 339
 340 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 341                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 342 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
 343                         struct cifs_tcon *tcon,
 344                         const unsigned char *searchName,
 345                         FILE_UNIX_BASIC_INFO *pFindData,
 346                         const struct nls_table *nls_codepage, int remap);
 347
 348 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
 349                            const char *search_name,
 350                            struct dfs_info3_param **target_nodes,
 351                            unsigned int *num_of_nodes,
 352                            const struct nls_table *nls_codepage, int remap);
 353
 354 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
 355                                unsigned int *num_of_nodes,
 356                                struct dfs_info3_param **target_nodes,
 357                                const struct nls_table *nls_codepage, int remap,
 358                                const char *searchName, bool is_unicode);
 359 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
 360                                  struct cifs_sb_info *cifs_sb,
 361                                  struct smb3_fs_context *ctx);
 362 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 363                         struct kstatfs *FSData);
 364 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 365                         struct kstatfs *FSData);
 366 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 367                         __u64 cap);
 368
 369 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
 370                         struct cifs_tcon *tcon);
 371 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
 372 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
 373 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 374                         struct kstatfs *FSData);
 375
 376 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 377                         const char *fileName, const FILE_BASIC_INFO *data,
 378                         const struct nls_table *nls_codepage,
 379                         struct cifs_sb_info *cifs_sb);
 380 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 381                         const FILE_BASIC_INFO *data, __u16 fid,
 382                         __u32 pid_of_opener);
 383 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
 384                                      struct cifs_tcon *tcon,
 385                                      bool delete_file, __u16 fid,
 386                                      __u32 pid_of_opener);
 387 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
 388                          const char *file_name, __u64 size,
 389                          struct cifs_sb_info *cifs_sb, bool set_allocation);
 390 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 391                               struct cifsFileInfo *cfile, __u64 size,
 392                               bool set_allocation);
 393
 394 struct cifs_unix_set_info_args {
 395         __u64   ctime;
 396         __u64   atime;
 397         __u64   mtime;
 398         __u64   mode;
 399         kuid_t  uid;
 400         kgid_t  gid;
 401         dev_t   device;
 402 };
 403
 404 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 405                                   struct cifs_tcon *tcon,
 406                                   const struct cifs_unix_set_info_args *args,
 407                                   u16 fid, u32 pid_of_opener);
 408
 409 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
 410                                   struct cifs_tcon *tcon, const char *file_name,
 411                                   const struct cifs_unix_set_info_args *args,
 412                                   const struct nls_table *nls_codepage,
 413                                   int remap);
 414
 415 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
 416                         umode_t mode, struct cifs_tcon *tcon,
 417                         const char *name, struct cifs_sb_info *cifs_sb);
 418 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
 419                         const char *name, struct cifs_sb_info *cifs_sb);
 420 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 421                         const char *name, __u16 type,
 422                         const struct nls_table *nls_codepage,
 423                         int remap_special_chars);
 424 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 425                           const char *name, struct cifs_sb_info *cifs_sb);
 426 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
 427                          const char *from_name, const char *to_name,
 428                          struct cifs_sb_info *cifs_sb);
 429 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
 430                                  int netfid, const char *target_name,
 431                                  const struct nls_table *nls_codepage,
 432                                  int remap_special_chars);
 433 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
 434                               const char *from_name, const char *to_name,
 435                               struct cifs_sb_info *cifs_sb);
 436 extern int CIFSUnixCreateHardLink(const unsigned int xid,
 437                         struct cifs_tcon *tcon,
 438                         const char *fromName, const char *toName,
 439                         const struct nls_table *nls_codepage,
 440                         int remap_special_chars);
 441 extern int CIFSUnixCreateSymLink(const unsigned int xid,
 442                         struct cifs_tcon *tcon,
 443                         const char *fromName, const char *toName,
 444                         const struct nls_table *nls_codepage, int remap);
 445 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
 446                         struct cifs_tcon *tcon,
 447                         const unsigned char *searchName, char **syminfo,
 448                         const struct nls_table *nls_codepage, int remap);
 449 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 450                                __u16 fid, char **symlinkinfo,
 451                                const struct nls_table *nls_codepage);
 452 extern int CIFSSMB_set_compression(const unsigned int xid,
 453                                    struct cifs_tcon *tcon, __u16 fid);
 454 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
 455                      int *oplock, FILE_ALL_INFO *buf);
 456 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
 457                         const char *fileName, const int disposition,
 458                         const int access_flags, const int omode,
 459                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 460                         const struct nls_table *nls_codepage, int remap);
 461 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
 462                         u32 posix_flags, __u64 mode, __u16 *netfid,
 463                         FILE_UNIX_BASIC_INFO *pRetData,
 464                         __u32 *pOplock, const char *name,
 465                         const struct nls_table *nls_codepage, int remap);
 466 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
 467                         const int smb_file_id);
 468
 469 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
 470                         const int smb_file_id);
 471
 472 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
 473                         unsigned int *nbytes, char **buf,
 474                         int *return_buf_type);
 475 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
 476                         unsigned int *nbytes, const char *buf);
 477 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
 478                         unsigned int *nbytes, struct kvec *iov, const int nvec);
 479 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
 480                                  const char *search_name, __u64 *inode_number,
 481                                  const struct nls_table *nls_codepage,
 482                                  int remap);
 483
 484 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
 485                       const __u16 netfid, const __u8 lock_type,
 486                       const __u32 num_unlock, const __u32 num_lock,
 487                       LOCKING_ANDX_RANGE *buf);
 488 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
 489                         const __u16 netfid, const __u32 netpid, const __u64 len,
 490                         const __u64 offset, const __u32 numUnlock,
 491                         const __u32 numLock, const __u8 lockType,
 492                         const bool waitFlag, const __u8 oplock_level);
 493 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
 494                         const __u16 smb_file_id, const __u32 netpid,
 495                         const loff_t start_offset, const __u64 len,
 496                         struct file_lock *, const __u16 lock_type,
 497                         const bool waitFlag);
 498 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
 499 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 500 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
 501
 502 extern struct cifs_ses *sesInfoAlloc(void);
 503 extern void sesInfoFree(struct cifs_ses *);
 504 extern struct cifs_tcon *tconInfoAlloc(void);
 505 extern void tconInfoFree(struct cifs_tcon *);
 506
 507 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
 508                    __u32 *pexpected_response_sequence_number);
 509 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 510                           __u32 *);
 511 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 512 extern int cifs_verify_signature(struct smb_rqst *rqst,
 513                                  struct TCP_Server_Info *server,
 514                                 __u32 expected_sequence_number);
 515 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 516 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
 517 extern int calc_seckey(struct cifs_ses *);
 518 extern int generate_smb30signingkey(struct cifs_ses *ses,
 519                                     struct TCP_Server_Info *server);
 520 extern int generate_smb311signingkey(struct cifs_ses *ses,
 521                                      struct TCP_Server_Info *server);
 522
 523 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
 524 extern int CIFSSMBCopy(unsigned int xid,
 525                         struct cifs_tcon *source_tcon,
 526                         const char *fromName,
 527                         const __u16 target_tid,
 528                         const char *toName, const int flags,
 529                         const struct nls_table *nls_codepage,
 530                         int remap_special_chars);
 531 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
 532                         const unsigned char *searchName,
 533                         const unsigned char *ea_name, char *EAData,
 534                         size_t bufsize, struct cifs_sb_info *cifs_sb);
 535 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
 536                 const char *fileName, const char *ea_name,
 537                 const void *ea_value, const __u16 ea_value_len,
 538                 const struct nls_table *nls_codepage,
 539                 struct cifs_sb_info *cifs_sb);
 540 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
 541                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 542 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
 543                         struct cifs_ntsd *, __u32, int);
 544 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
 545                            const unsigned char *searchName,
 546                            struct posix_acl **acl, const int acl_type,
 547                            const struct nls_table *nls_codepage, int remap);
 548 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
 549                            const unsigned char *fileName,
 550                            const struct posix_acl *acl, const int acl_type,
 551                            const struct nls_table *nls_codepage, int remap);
 552 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
 553                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 554 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
 555 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 556 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
 557 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 558                               struct cifs_sb_info *cifs_sb,
 559                               struct cifs_fattr *fattr,
 560                               const unsigned char *path);
 561 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
 562                         const struct nls_table *codepage);
 563
 564 extern int
 565 cifs_setup_volume_info(struct smb3_fs_context *ctx, const char *mntopts, const char *devname);
 566
 567 extern struct TCP_Server_Info *
 568 cifs_find_tcp_session(struct smb3_fs_context *ctx);
 569
 570 extern void cifs_put_smb_ses(struct cifs_ses *ses);
 571
 572 extern struct cifs_ses *
 573 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
 574
 575 void cifs_readdata_release(struct kref *refcount);
 576 int cifs_async_readv(struct cifs_readdata *rdata);
 577 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
 578
 579 int cifs_async_writev(struct cifs_writedata *wdata,
 580                       void (*release)(struct kref *kref));
 581 void cifs_writev_complete(struct work_struct *work);
 582 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
 583                                                 work_func_t complete);
 584 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
 585                                                 work_func_t complete);
 586 void cifs_writedata_release(struct kref *refcount);
 587 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 588                           struct cifs_sb_info *cifs_sb,
 589                           const unsigned char *path, char *pbuf,
 590                           unsigned int *pbytes_read);
 591 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 592                            struct cifs_sb_info *cifs_sb,
 593                            const unsigned char *path, char *pbuf,
 594                            unsigned int *pbytes_written);
 595 int __cifs_calc_signature(struct smb_rqst *rqst,
 596                         struct TCP_Server_Info *server, char *signature,
 597                         struct shash_desc *shash);
 598 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
 599                                         enum securityEnum);
 600 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
 601 void cifs_aio_ctx_release(struct kref *refcount);
 602 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
 603
 604 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
 605 void cifs_free_hash(struct shash_desc **sdesc);
 606
 607 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
 608                                 unsigned int *len, unsigned int *offset);
 609 struct cifs_chan *
 610 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
 611 int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
 612 bool is_server_using_iface(struct TCP_Server_Info *server,
 613                            struct cifs_server_iface *iface);
 614 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
 615 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
 616
 617 unsigned int
 618 cifs_ses_get_chan_index(struct cifs_ses *ses,
 619                         struct TCP_Server_Info *server);
 620 void
 621 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
 622                              struct TCP_Server_Info *server);
 623 void
 624 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
 625                                struct TCP_Server_Info *server);
 626 bool
 627 cifs_chan_in_reconnect(struct cifs_ses *ses,
 628                           struct TCP_Server_Info *server);
 629 void
 630 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
 631                              struct TCP_Server_Info *server);
 632 void
 633 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
 634                                struct TCP_Server_Info *server);
 635 bool
 636 cifs_chan_needs_reconnect(struct cifs_ses *ses,
 637                           struct TCP_Server_Info *server);
 638 bool
 639 cifs_chan_is_iface_active(struct cifs_ses *ses,
 640                           struct TCP_Server_Info *server);
 641 int
 642 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
 643 int
 644 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
 645
 646 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
 647 int copy_path_name(char *dst, const char *src);
 648 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
 649                                int resp_buftype,
 650                                struct cifs_search_info *srch_inf);
 651
 652 struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
 653 void cifs_put_tcp_super(struct super_block *sb);
 654 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
 655 char *extract_hostname(const char *unc);
 656 char *extract_sharename(const char *unc);
 657
 658 #ifdef CONFIG_CIFS_DFS_UPCALL
 659 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
 660                                const char *old_path,
 661                                const struct nls_table *nls_codepage,
 662                                struct dfs_info3_param *referral, int remap)
 663 {
 664         return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
 665                               referral, NULL);
 666 }
 667
 668 int match_target_ip(struct TCP_Server_Info *server,
 669                     const char *share, size_t share_len,
 670                     bool *result);
 671
 672 int cifs_dfs_query_info_nonascii_quirk(const unsigned int xid,
 673                                        struct cifs_tcon *tcon,
 674                                        struct cifs_sb_info *cifs_sb,
 675                                        const char *dfs_link_path);
 676 #endif
 677
 678 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
 679 {
 680         if (cifs_sb && (backup_cred(cifs_sb)))
 681                 return options | CREATE_OPEN_BACKUP_INTENT;
 682         else
 683                 return options;
 684 }
 685
 686 struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon);
 687 void cifs_put_tcon_super(struct super_block *sb);
 688
 689 #endif                  /* _CIFSPROTO_H */