fs/smb/client/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 <linux/ctype.h>
  12 #include "trace.h"
  13 #ifdef CONFIG_CIFS_DFS_UPCALL
  14 #include "dfs_cache.h"
  15 #endif
  16
  17 struct statfs;
  18 struct smb_rqst;
  19 struct smb3_fs_context;
  20
  21 /*
  22  *****************************************************************
  23  * All Prototypes
  24  *****************************************************************
  25  */
  26
  27 extern struct smb_hdr *cifs_buf_get(void);
  28 extern void cifs_buf_release(void *);
  29 extern struct smb_hdr *cifs_small_buf_get(void);
  30 extern void cifs_small_buf_release(void *);
  31 extern void free_rsp_buf(int, void *);
  32 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
  33                         unsigned int /* length */);
  34 extern unsigned int _get_xid(void);
  35 extern void _free_xid(unsigned int);
  36 #define get_xid()                                                       \
  37 ({                                                                      \
  38         unsigned int __xid = _get_xid();                                \
  39         cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n",           \
  40                  __func__, __xid,                                       \
  41                  from_kuid(&init_user_ns, current_fsuid()));            \
  42         trace_smb3_enter(__xid, __func__);                              \
  43         __xid;                                                          \
  44 })
  45
  46 #define free_xid(curr_xid)                                              \
  47 do {                                                                    \
  48         _free_xid(curr_xid);                                            \
  49         cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n",           \
  50                  __func__, curr_xid, (int)rc);                          \
  51         if (rc)                                                         \
  52                 trace_smb3_exit_err(curr_xid, __func__, (int)rc);       \
  53         else                                                            \
  54                 trace_smb3_exit_done(curr_xid, __func__);               \
  55 } while (0)
  56 extern int init_cifs_idmap(void);
  57 extern void exit_cifs_idmap(void);
  58 extern int init_cifs_spnego(void);
  59 extern void exit_cifs_spnego(void);
  60 extern const char *build_path_from_dentry(struct dentry *, void *);
  61 char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
  62                                                const char *tree, int tree_len,
  63                                                bool prefix);
  64 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
  65                                                     void *page, bool prefix);
  66 static inline void *alloc_dentry_path(void)
  67 {
  68         return __getname();
  69 }
  70
  71 static inline void free_dentry_path(void *page)
  72 {
  73         if (page)
  74                 __putname(page);
  75 }
  76
  77 extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx,
  78                                      struct cifs_sb_info *cifs_sb,
  79                                      struct cifs_tcon *tcon,
  80                                      int add_treename);
  81 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
  82 char *cifs_build_devname(char *nodename, const char *prepath);
  83 extern void delete_mid(struct mid_q_entry *mid);
  84 void __release_mid(struct kref *refcount);
  85 extern void cifs_wake_up_task(struct mid_q_entry *mid);
  86 extern int cifs_handle_standard(struct TCP_Server_Info *server,
  87                                 struct mid_q_entry *mid);
  88 extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx,
  89                                       char dirsep);
  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 int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs);
  93 extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
  94 extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
  95 extern int cifs_call_async(struct TCP_Server_Info *server,
  96                         struct smb_rqst *rqst,
  97                         mid_receive_t *receive, mid_callback_t *callback,
  98                         mid_handle_t *handle, void *cbdata, const int flags,
  99                         const struct cifs_credits *exist_credits);
 100 extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses);
 101 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
 102                           struct TCP_Server_Info *server,
 103                           struct smb_rqst *rqst, int *resp_buf_type,
 104                           const int flags, struct kvec *resp_iov);
 105 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
 106                               struct TCP_Server_Info *server,
 107                               const int flags, const int num_rqst,
 108                               struct smb_rqst *rqst, int *resp_buf_type,
 109                               struct kvec *resp_iov);
 110 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
 111                         struct smb_hdr * /* input */ ,
 112                         struct smb_hdr * /* out */ ,
 113                         int * /* bytes returned */ , const int);
 114 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
 115                             char *in_buf, int flags);
 116 extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
 117                                 struct TCP_Server_Info *,
 118                                 struct smb_rqst *);
 119 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
 120                                                 struct smb_rqst *);
 121 extern int cifs_check_receive(struct mid_q_entry *mid,
 122                         struct TCP_Server_Info *server, bool log_error);
 123 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
 124                                  size_t size, size_t *num,
 125                                  struct cifs_credits *credits);
 126 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
 127                         struct kvec *, int /* nvec to send */,
 128                         int * /* type of buf returned */, const int flags,
 129                         struct kvec * /* resp vec */);
 130 extern int SendReceiveBlockingLock(const unsigned int xid,
 131                         struct cifs_tcon *ptcon,
 132                         struct smb_hdr *in_buf,
 133                         struct smb_hdr *out_buf,
 134                         int *bytes_returned);
 135
 136 void
 137 cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server,
 138                                       bool all_channels);
 139 void
 140 cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
 141                                       bool mark_smb_session);
 142 extern int cifs_reconnect(struct TCP_Server_Info *server,
 143                           bool mark_smb_session);
 144 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
 145 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
 146 extern bool backup_cred(struct cifs_sb_info *);
 147 extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
 148                                    bool from_readdir);
 149 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
 150                             unsigned int bytes_written);
 151 void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result,
 152                                       bool was_async);
 153 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
 154 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
 155                                   int flags,
 156                                   struct cifsFileInfo **ret_file);
 157 extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
 158                                   int flags,
 159                                   struct cifsFileInfo **ret_file);
 160 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
 161 extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
 162                                   struct cifsFileInfo **ret_file);
 163 extern unsigned int smbCalcSize(void *buf);
 164 extern int decode_negTokenInit(unsigned char *security_blob, int length,
 165                         struct TCP_Server_Info *server);
 166 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
 167 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 168 extern int map_smb_to_linux_error(char *buf, bool logErr);
 169 extern int map_and_check_smb_error(struct mid_q_entry *mid, bool logErr);
 170 extern void header_assemble(struct smb_hdr *, char /* command */ ,
 171                             const struct cifs_tcon *, int /* length of
 172                             fixed section (word count) in two byte units */);
 173 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 174                                 struct cifs_ses *ses,
 175                                 void **request_buf);
 176 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
 177                                 enum securityEnum requested);
 178 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
 179                           struct TCP_Server_Info *server,
 180                           const struct nls_table *nls_cp);
 181 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 182 extern u64 cifs_UnixTimeToNT(struct timespec64);
 183 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 184                                       int offset);
 185 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 186 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
 187 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
 188 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
 189 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
 190                              struct file_lock *flock, const unsigned int xid);
 191 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
 192
 193 extern void cifs_down_write(struct rw_semaphore *sem);
 194 struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
 195                                        struct tcon_link *tlink, __u32 oplock,
 196                                        const char *symlink_target);
 197 extern int cifs_posix_open(const char *full_path, struct inode **inode,
 198                            struct super_block *sb, int mode,
 199                            unsigned int f_flags, __u32 *oplock, __u16 *netfid,
 200                            unsigned int xid);
 201 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 202 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 203                                      FILE_UNIX_BASIC_INFO *info,
 204                                      struct cifs_sb_info *cifs_sb);
 205 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
 206                                         struct cifs_sb_info *);
 207 extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
 208                                bool from_readdir);
 209 extern struct inode *cifs_iget(struct super_block *sb,
 210                                struct cifs_fattr *fattr);
 211
 212 int cifs_get_inode_info(struct inode **inode, const char *full_path,
 213                         struct cifs_open_info_data *data, struct super_block *sb, int xid,
 214                         const struct cifs_fid *fid);
 215 extern int smb311_posix_get_inode_info(struct inode **inode,
 216                                        const char *full_path,
 217                                        struct cifs_open_info_data *data,
 218                                        struct super_block *sb,
 219                                        const unsigned int xid);
 220 extern int cifs_get_inode_info_unix(struct inode **pinode,
 221                         const unsigned char *search_path,
 222                         struct super_block *sb, unsigned int xid);
 223 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
 224                               unsigned int xid, const char *full_path, __u32 dosattr);
 225 extern int cifs_rename_pending_delete(const char *full_path,
 226                                       struct dentry *dentry,
 227                                       const unsigned int xid);
 228 extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid,
 229                                 struct cifs_fattr *fattr, uint sidtype);
 230 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 231                               struct cifs_fattr *fattr, struct inode *inode,
 232                               bool get_mode_from_special_sid,
 233                               const char *path, const struct cifs_fid *pfid);
 234 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode,
 235                                         kuid_t uid, kgid_t gid);
 236 extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino,
 237                                       const char *path, u32 *plen, u32 info);
 238 extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb,
 239                                 const struct cifs_fid *pfid, u32 *plen, u32 info);
 240 extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap,
 241                                       struct dentry *dentry, int type);
 242 extern int cifs_set_acl(struct mnt_idmap *idmap,
 243                         struct dentry *dentry, struct posix_acl *acl, int type);
 244 extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino,
 245                                 const char *path, int flag);
 246 extern unsigned int setup_authusers_ACE(struct smb_ace *pace);
 247 extern unsigned int setup_special_mode_ACE(struct smb_ace *pace,
 248                                            bool posix,
 249                                            __u64 nmode);
 250 extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace);
 251
 252 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
 253 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
 254                                  unsigned int to_read);
 255 extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server,
 256                                         size_t to_read);
 257 int cifs_read_iter_from_socket(struct TCP_Server_Info *server,
 258                                struct iov_iter *iter,
 259                                unsigned int to_read);
 260 extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb);
 261 void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx);
 262 int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx);
 263 int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx);
 264 int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx);
 265 extern int cifs_match_super(struct super_block *, void *);
 266 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx);
 267 extern void cifs_umount(struct cifs_sb_info *);
 268 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
 269 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
 270
 271 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
 272                                     __u64 length, __u8 type, __u16 flags,
 273                                     struct cifsLockInfo **conf_lock,
 274                                     int rw_check);
 275 extern void cifs_add_pending_open(struct cifs_fid *fid,
 276                                   struct tcon_link *tlink,
 277                                   struct cifs_pending_open *open);
 278 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
 279                                          struct tcon_link *tlink,
 280                                          struct cifs_pending_open *open);
 281 extern void cifs_del_pending_open(struct cifs_pending_open *open);
 282
 283 extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile,
 284                                 struct cifs_deferred_close **dclose);
 285
 286 extern void cifs_add_deferred_close(struct cifsFileInfo *cfile,
 287                                 struct cifs_deferred_close *dclose);
 288
 289 extern void cifs_del_deferred_close(struct cifsFileInfo *cfile);
 290
 291 extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode);
 292
 293 extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon);
 294
 295 extern void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon,
 296                                 const char *path);
 297
 298 extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode,
 299                                 const char *path);
 300
 301 extern struct TCP_Server_Info *
 302 cifs_get_tcp_session(struct smb3_fs_context *ctx,
 303                      struct TCP_Server_Info *primary_server);
 304 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
 305                                  int from_reconnect);
 306 extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
 307
 308 extern void cifs_release_automount_timer(void);
 309
 310 void cifs_proc_init(void);
 311 void cifs_proc_clean(void);
 312
 313 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
 314 extern void cifs_free_llist(struct list_head *llist);
 315 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
 316
 317 int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon);
 318
 319 extern int cifs_negotiate_protocol(const unsigned int xid,
 320                                    struct cifs_ses *ses,
 321                                    struct TCP_Server_Info *server);
 322 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 323                               struct TCP_Server_Info *server,
 324                               struct nls_table *nls_info);
 325 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
 326 extern int CIFSSMBNegotiate(const unsigned int xid,
 327                             struct cifs_ses *ses,
 328                             struct TCP_Server_Info *server);
 329
 330 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
 331                     const char *tree, struct cifs_tcon *tcon,
 332                     const struct nls_table *);
 333
 334 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
 335                 const char *searchName, struct cifs_sb_info *cifs_sb,
 336                 __u16 *searchHandle, __u16 search_flags,
 337                 struct cifs_search_info *psrch_inf,
 338                 bool msearch);
 339
 340 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
 341                 __u16 searchHandle, __u16 search_flags,
 342                 struct cifs_search_info *psrch_inf);
 343
 344 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
 345                         const __u16 search_handle);
 346
 347 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 348                         u16 netfid, FILE_ALL_INFO *pFindData);
 349 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 350                             const char *search_Name, FILE_ALL_INFO *data,
 351                             int legacy /* whether to use old info level */,
 352                             const struct nls_table *nls_codepage, int remap);
 353 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
 354                                const char *search_name, FILE_ALL_INFO *data,
 355                                const struct nls_table *nls_codepage, int remap);
 356
 357 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 358                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 359 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
 360                         struct cifs_tcon *tcon,
 361                         const unsigned char *searchName,
 362                         FILE_UNIX_BASIC_INFO *pFindData,
 363                         const struct nls_table *nls_codepage, int remap);
 364
 365 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
 366                            const char *search_name,
 367                            struct dfs_info3_param **target_nodes,
 368                            unsigned int *num_of_nodes,
 369                            const struct nls_table *nls_codepage, int remap);
 370
 371 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
 372                                unsigned int *num_of_nodes,
 373                                struct dfs_info3_param **target_nodes,
 374                                const struct nls_table *nls_codepage, int remap,
 375                                const char *searchName, bool is_unicode);
 376 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
 377                                  struct cifs_sb_info *cifs_sb,
 378                                  struct smb3_fs_context *ctx);
 379 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 380                         struct kstatfs *FSData);
 381 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 382                         struct kstatfs *FSData);
 383 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 384                         __u64 cap);
 385
 386 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
 387                         struct cifs_tcon *tcon);
 388 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
 389 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
 390 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 391                         struct kstatfs *FSData);
 392
 393 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 394                         const char *fileName, const FILE_BASIC_INFO *data,
 395                         const struct nls_table *nls_codepage,
 396                         struct cifs_sb_info *cifs_sb);
 397 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 398                         const FILE_BASIC_INFO *data, __u16 fid,
 399                         __u32 pid_of_opener);
 400 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
 401                                      struct cifs_tcon *tcon,
 402                                      bool delete_file, __u16 fid,
 403                                      __u32 pid_of_opener);
 404 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
 405                          const char *file_name, __u64 size,
 406                          struct cifs_sb_info *cifs_sb, bool set_allocation,
 407                          struct dentry *dentry);
 408 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 409                               struct cifsFileInfo *cfile, __u64 size,
 410                               bool set_allocation);
 411
 412 struct cifs_unix_set_info_args {
 413         __u64   ctime;
 414         __u64   atime;
 415         __u64   mtime;
 416         __u64   mode;
 417         kuid_t  uid;
 418         kgid_t  gid;
 419         dev_t   device;
 420 };
 421
 422 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 423                                   struct cifs_tcon *tcon,
 424                                   const struct cifs_unix_set_info_args *args,
 425                                   u16 fid, u32 pid_of_opener);
 426
 427 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
 428                                   struct cifs_tcon *tcon, const char *file_name,
 429                                   const struct cifs_unix_set_info_args *args,
 430                                   const struct nls_table *nls_codepage,
 431                                   int remap);
 432
 433 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
 434                         umode_t mode, struct cifs_tcon *tcon,
 435                         const char *name, struct cifs_sb_info *cifs_sb);
 436 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
 437                         const char *name, struct cifs_sb_info *cifs_sb);
 438 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 439                         const char *name, __u16 type,
 440                         const struct nls_table *nls_codepage,
 441                         int remap_special_chars);
 442 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 443                           const char *name, struct cifs_sb_info *cifs_sb,
 444                           struct dentry *dentry);
 445 int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
 446                   struct dentry *source_dentry,
 447                   const char *from_name, const char *to_name,
 448                   struct cifs_sb_info *cifs_sb);
 449 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
 450                                  int netfid, const char *target_name,
 451                                  const struct nls_table *nls_codepage,
 452                                  int remap_special_chars);
 453 int CIFSCreateHardLink(const unsigned int xid,
 454                        struct cifs_tcon *tcon,
 455                        struct dentry *source_dentry,
 456                        const char *from_name, const char *to_name,
 457                        struct cifs_sb_info *cifs_sb);
 458 extern int CIFSUnixCreateHardLink(const unsigned int xid,
 459                         struct cifs_tcon *tcon,
 460                         const char *fromName, const char *toName,
 461                         const struct nls_table *nls_codepage,
 462                         int remap_special_chars);
 463 extern int CIFSUnixCreateSymLink(const unsigned int xid,
 464                         struct cifs_tcon *tcon,
 465                         const char *fromName, const char *toName,
 466                         const struct nls_table *nls_codepage, int remap);
 467 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
 468                         struct cifs_tcon *tcon,
 469                         const unsigned char *searchName, char **syminfo,
 470                         const struct nls_table *nls_codepage, int remap);
 471 extern int cifs_query_reparse_point(const unsigned int xid,
 472                                     struct cifs_tcon *tcon,
 473                                     struct cifs_sb_info *cifs_sb,
 474                                     const char *full_path,
 475                                     u32 *tag, struct kvec *rsp,
 476                                     int *rsp_buftype);
 477 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 478                                __u16 fid, char **symlinkinfo,
 479                                const struct nls_table *nls_codepage);
 480 extern int CIFSSMB_set_compression(const unsigned int xid,
 481                                    struct cifs_tcon *tcon, __u16 fid);
 482 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
 483                      int *oplock, FILE_ALL_INFO *buf);
 484 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
 485                         const char *fileName, const int disposition,
 486                         const int access_flags, const int omode,
 487                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 488                         const struct nls_table *nls_codepage, int remap);
 489 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
 490                         u32 posix_flags, __u64 mode, __u16 *netfid,
 491                         FILE_UNIX_BASIC_INFO *pRetData,
 492                         __u32 *pOplock, const char *name,
 493                         const struct nls_table *nls_codepage, int remap);
 494 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
 495                         const int smb_file_id);
 496
 497 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
 498                         const int smb_file_id);
 499
 500 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
 501                         unsigned int *nbytes, char **buf,
 502                         int *return_buf_type);
 503 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
 504                         unsigned int *nbytes, const char *buf);
 505 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
 506                         unsigned int *nbytes, struct kvec *iov, const int nvec);
 507 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
 508                                  const char *search_name, __u64 *inode_number,
 509                                  const struct nls_table *nls_codepage,
 510                                  int remap);
 511
 512 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
 513                       const __u16 netfid, const __u8 lock_type,
 514                       const __u32 num_unlock, const __u32 num_lock,
 515                       LOCKING_ANDX_RANGE *buf);
 516 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
 517                         const __u16 netfid, const __u32 netpid, const __u64 len,
 518                         const __u64 offset, const __u32 numUnlock,
 519                         const __u32 numLock, const __u8 lockType,
 520                         const bool waitFlag, const __u8 oplock_level);
 521 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
 522                         const __u16 smb_file_id, const __u32 netpid,
 523                         const loff_t start_offset, const __u64 len,
 524                         struct file_lock *, const __u16 lock_type,
 525                         const bool waitFlag);
 526 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
 527 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 528 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
 529
 530 extern struct cifs_ses *sesInfoAlloc(void);
 531 extern void sesInfoFree(struct cifs_ses *);
 532 extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled,
 533                                          enum smb3_tcon_ref_trace trace);
 534 extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace);
 535
 536 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
 537                    __u32 *pexpected_response_sequence_number);
 538 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 539                           __u32 *);
 540 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 541 extern int cifs_verify_signature(struct smb_rqst *rqst,
 542                                  struct TCP_Server_Info *server,
 543                                 __u32 expected_sequence_number);
 544 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 545 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
 546 extern int calc_seckey(struct cifs_ses *);
 547 extern int generate_smb30signingkey(struct cifs_ses *ses,
 548                                     struct TCP_Server_Info *server);
 549 extern int generate_smb311signingkey(struct cifs_ses *ses,
 550                                      struct TCP_Server_Info *server);
 551
 552 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
 553 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
 554                         const unsigned char *searchName,
 555                         const unsigned char *ea_name, char *EAData,
 556                         size_t bufsize, struct cifs_sb_info *cifs_sb);
 557 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
 558                 const char *fileName, const char *ea_name,
 559                 const void *ea_value, const __u16 ea_value_len,
 560                 const struct nls_table *nls_codepage,
 561                 struct cifs_sb_info *cifs_sb);
 562 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
 563                         __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen);
 564 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
 565                         struct smb_ntsd *pntsd, __u32 len, int aclflag);
 566 extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
 567                            const unsigned char *searchName,
 568                            struct posix_acl **acl, const int acl_type,
 569                            const struct nls_table *nls_codepage, int remap);
 570 extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
 571                            const unsigned char *fileName,
 572                            const struct posix_acl *acl, const int acl_type,
 573                            const struct nls_table *nls_codepage, int remap);
 574 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
 575                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 576 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
 577 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 578 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
 579 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 580                               struct cifs_sb_info *cifs_sb,
 581                               struct cifs_fattr *fattr,
 582                               const unsigned char *path);
 583 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
 584                         const struct nls_table *codepage);
 585
 586 extern struct TCP_Server_Info *
 587 cifs_find_tcp_session(struct smb3_fs_context *ctx);
 588
 589 void __cifs_put_smb_ses(struct cifs_ses *ses);
 590
 591 extern struct cifs_ses *
 592 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx);
 593
 594 int cifs_async_readv(struct cifs_io_subrequest *rdata);
 595 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
 596
 597 void cifs_async_writev(struct cifs_io_subrequest *wdata);
 598 void cifs_writev_complete(struct work_struct *work);
 599 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 600                           struct cifs_sb_info *cifs_sb,
 601                           const unsigned char *path, char *pbuf,
 602                           unsigned int *pbytes_read);
 603 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 604                            struct cifs_sb_info *cifs_sb,
 605                            const unsigned char *path, char *pbuf,
 606                            unsigned int *pbytes_written);
 607 int __cifs_calc_signature(struct smb_rqst *rqst,
 608                         struct TCP_Server_Info *server, char *signature,
 609                         struct shash_desc *shash);
 610 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
 611                                         enum securityEnum);
 612
 613 int cifs_alloc_hash(const char *name, struct shash_desc **sdesc);
 614 void cifs_free_hash(struct shash_desc **sdesc);
 615
 616 int cifs_try_adding_channels(struct cifs_ses *ses);
 617 bool is_server_using_iface(struct TCP_Server_Info *server,
 618                            struct cifs_server_iface *iface);
 619 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
 620 void cifs_ses_mark_for_reconnect(struct cifs_ses *ses);
 621
 622 int
 623 cifs_ses_get_chan_index(struct cifs_ses *ses,
 624                         struct TCP_Server_Info *server);
 625 void
 626 cifs_chan_set_in_reconnect(struct cifs_ses *ses,
 627                              struct TCP_Server_Info *server);
 628 void
 629 cifs_chan_clear_in_reconnect(struct cifs_ses *ses,
 630                                struct TCP_Server_Info *server);
 631 void
 632 cifs_chan_set_need_reconnect(struct cifs_ses *ses,
 633                              struct TCP_Server_Info *server);
 634 void
 635 cifs_chan_clear_need_reconnect(struct cifs_ses *ses,
 636                                struct TCP_Server_Info *server);
 637 bool
 638 cifs_chan_needs_reconnect(struct cifs_ses *ses,
 639                           struct TCP_Server_Info *server);
 640 bool
 641 cifs_chan_is_iface_active(struct cifs_ses *ses,
 642                           struct TCP_Server_Info *server);
 643 void
 644 cifs_disable_secondary_channels(struct cifs_ses *ses);
 645 void
 646 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
 647 int
 648 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
 649
 650 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
 651 int copy_path_name(char *dst, const char *src);
 652 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
 653                                int resp_buftype,
 654                                struct cifs_search_info *srch_inf);
 655
 656 struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon);
 657 void cifs_put_tcp_super(struct super_block *sb);
 658 int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix);
 659 char *extract_hostname(const char *unc);
 660 char *extract_sharename(const char *unc);
 661 int parse_reparse_point(struct reparse_data_buffer *buf,
 662                         u32 plen, struct cifs_sb_info *cifs_sb,
 663                         const char *full_path,
 664                         bool unicode, struct cifs_open_info_data *data);
 665 int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
 666                          struct dentry *dentry, struct cifs_tcon *tcon,
 667                          const char *full_path, umode_t mode, dev_t dev,
 668                          const char *symname);
 669 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
 670                        struct dentry *dentry, struct cifs_tcon *tcon,
 671                        const char *full_path, umode_t mode, dev_t dev);
 672
 673 #ifdef CONFIG_CIFS_DFS_UPCALL
 674 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
 675                                const char *old_path,
 676                                const struct nls_table *nls_codepage,
 677                                struct dfs_info3_param *referral, int remap)
 678 {
 679         return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
 680                               referral, NULL);
 681 }
 682
 683 int match_target_ip(struct TCP_Server_Info *server,
 684                     const char *share, size_t share_len,
 685                     bool *result);
 686 int cifs_inval_name_dfs_link_error(const unsigned int xid,
 687                                    struct cifs_tcon *tcon,
 688                                    struct cifs_sb_info *cifs_sb,
 689                                    const char *full_path,
 690                                    bool *islink);
 691 #else
 692 static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,
 693                                    struct cifs_tcon *tcon,
 694                                    struct cifs_sb_info *cifs_sb,
 695                                    const char *full_path,
 696                                    bool *islink)
 697 {
 698         *islink = false;
 699         return 0;
 700 }
 701 #endif
 702
 703 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
 704 {
 705         if (cifs_sb && (backup_cred(cifs_sb)))
 706                 return options | CREATE_OPEN_BACKUP_INTENT;
 707         else
 708                 return options;
 709 }
 710
 711 int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry);
 712
 713 static inline void cifs_put_smb_ses(struct cifs_ses *ses)
 714 {
 715         __cifs_put_smb_ses(ses);
 716 }
 717
 718 /* Get an active reference of @ses and its children.
 719  *
 720  * NOTE: make sure to call this function when incrementing reference count of
 721  * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
 722  * will also get its reference count incremented.
 723  *
 724  * cifs_put_smb_ses() will put all references, so call it when you're done.
 725  */
 726 static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
 727 {
 728         lockdep_assert_held(&cifs_tcp_ses_lock);
 729         ses->ses_count++;
 730 }
 731
 732 static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
 733 {
 734         if (strlen(s1) != strlen(s2))
 735                 return false;
 736         for (; *s1; s1++, s2++) {
 737                 if (*s1 == '/' || *s1 == '\\') {
 738                         if (*s2 != '/' && *s2 != '\\')
 739                                 return false;
 740                 } else if (tolower(*s1) != tolower(*s2))
 741                         return false;
 742         }
 743         return true;
 744 }
 745
 746 static inline void release_mid(struct mid_q_entry *mid)
 747 {
 748         kref_put(&mid->refcount, __release_mid);
 749 }
 750
 751 static inline void cifs_free_open_info(struct cifs_open_info_data *data)
 752 {
 753         kfree(data->symlink_target);
 754         free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base);
 755         memset(data, 0, sizeof(*data));
 756 }
 757
 758 #endif                  /* _CIFSPROTO_H */