fs/cifs/cifsproto.h

   1 /*
   2  *   fs/cifs/cifsproto.h
   3  *
   4  *   Copyright (c) International Business Machines  Corp., 2002,2008
   5  *   Author(s): Steve French (sfrench@us.ibm.com)
   6  *
   7  *   This library is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU Lesser General Public License as published
   9  *   by the Free Software Foundation; either version 2.1 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This library is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  15  *   the GNU Lesser General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU Lesser General Public License
  18  *   along with this library; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21 #ifndef _CIFSPROTO_H
  22 #define _CIFSPROTO_H
  23 #include <linux/nls.h>
  24 #include "trace.h"
  25 #ifdef CONFIG_CIFS_DFS_UPCALL
  26 #include "dfs_cache.h"
  27 #endif
  28
  29 struct statfs;
  30 struct smb_vol;
  31 struct smb_rqst;
  32
  33 /*
  34  *****************************************************************
  35  * All Prototypes
  36  *****************************************************************
  37  */
  38
  39 extern struct smb_hdr *cifs_buf_get(void);
  40 extern void cifs_buf_release(void *);
  41 extern struct smb_hdr *cifs_small_buf_get(void);
  42 extern void cifs_small_buf_release(void *);
  43 extern void free_rsp_buf(int, void *);
  44 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
  45                         unsigned int /* length */);
  46 extern unsigned int _get_xid(void);
  47 extern void _free_xid(unsigned int);
  48 #define get_xid()                                                       \
  49 ({                                                                      \
  50         unsigned int __xid = _get_xid();                                \
  51         cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n",           \
  52                  __func__, __xid,                                       \
  53                  from_kuid(&init_user_ns, current_fsuid()));            \
  54         trace_smb3_enter(__xid, __func__);                              \
  55         __xid;                                                          \
  56 })
  57
  58 #define free_xid(curr_xid)                                              \
  59 do {                                                                    \
  60         _free_xid(curr_xid);                                            \
  61         cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n",           \
  62                  __func__, curr_xid, (int)rc);                          \
  63         if (rc)                                                         \
  64                 trace_smb3_exit_err(curr_xid, __func__, (int)rc);       \
  65         else                                                            \
  66                 trace_smb3_exit_done(curr_xid, __func__);               \
  67 } while (0)
  68 extern int init_cifs_idmap(void);
  69 extern void exit_cifs_idmap(void);
  70 extern int init_cifs_spnego(void);
  71 extern void exit_cifs_spnego(void);
  72 extern char *build_path_from_dentry(struct dentry *);
  73 extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry,
  74                                                     bool prefix);
  75 extern char *cifs_build_path_to_root(struct smb_vol *vol,
  76                                      struct cifs_sb_info *cifs_sb,
  77                                      struct cifs_tcon *tcon,
  78                                      int add_treename);
  79 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
  80 extern char *cifs_compose_mount_options(const char *sb_mountdata,
  81                 const char *fullpath, const struct dfs_info3_param *ref,
  82                 char **devname);
  83 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
  84 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
  85                                         struct TCP_Server_Info *server);
  86 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
  87 extern void cifs_delete_mid(struct mid_q_entry *mid);
  88 extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
  89 extern void cifs_wake_up_task(struct mid_q_entry *mid);
  90 extern int cifs_handle_standard(struct TCP_Server_Info *server,
  91                                 struct mid_q_entry *mid);
  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 void header_assemble(struct smb_hdr *, char /* command */ ,
 158                             const struct cifs_tcon *, int /* length of
 159                             fixed section (word count) in two byte units */);
 160 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 161                                 struct cifs_ses *ses,
 162                                 void **request_buf);
 163 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
 164                                 enum securityEnum requested);
 165 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
 166                           const struct nls_table *nls_cp);
 167 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 168 extern u64 cifs_UnixTimeToNT(struct timespec64);
 169 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
 170                                       int offset);
 171 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
 172 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
 173 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
 174 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
 175 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
 176                              struct file_lock *flock, const unsigned int xid);
 177 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
 178
 179 extern void cifs_down_write(struct rw_semaphore *sem);
 180 extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
 181                                               struct file *file,
 182                                               struct tcon_link *tlink,
 183                                               __u32 oplock);
 184 extern int cifs_posix_open(char *full_path, struct inode **inode,
 185                            struct super_block *sb, int mode,
 186                            unsigned int f_flags, __u32 *oplock, __u16 *netfid,
 187                            unsigned int xid);
 188 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
 189 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 190                                      FILE_UNIX_BASIC_INFO *info,
 191                                      struct cifs_sb_info *cifs_sb);
 192 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
 193                                         struct cifs_sb_info *);
 194 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
 195 extern struct inode *cifs_iget(struct super_block *sb,
 196                                struct cifs_fattr *fattr);
 197
 198 extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
 199                                FILE_ALL_INFO *data, struct super_block *sb,
 200                                int xid, const struct cifs_fid *fid);
 201 extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path,
 202                         struct super_block *sb, unsigned int xid);
 203 extern int cifs_get_inode_info_unix(struct inode **pinode,
 204                         const unsigned char *search_path,
 205                         struct super_block *sb, unsigned int xid);
 206 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
 207                               unsigned int xid, char *full_path, __u32 dosattr);
 208 extern int cifs_rename_pending_delete(const char *full_path,
 209                                       struct dentry *dentry,
 210                                       const unsigned int xid);
 211 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
 212                               struct cifs_fattr *fattr, struct inode *inode,
 213                               bool get_mode_from_special_sid,
 214                               const char *path, const struct cifs_fid *pfid);
 215 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
 216                                         kuid_t, kgid_t);
 217 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
 218                                         const char *, u32 *);
 219 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
 220                                                 const struct cifs_fid *, u32 *);
 221 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 222                                 const char *, int);
 223 extern unsigned int setup_authusers_ACE(struct cifs_ace *pace);
 224 extern unsigned int setup_special_mode_ACE(struct cifs_ace *pace, __u64 nmode);
 225 extern unsigned int setup_special_user_owner_ACE(struct cifs_ace *pace);
 226
 227 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
 228 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
 229                                  unsigned int to_read);
 230 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
 231                                         struct page *page,
 232                                         unsigned int page_offset,
 233                                         unsigned int to_read);
 234 extern int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 235                                struct cifs_sb_info *cifs_sb);
 236 extern int cifs_match_super(struct super_block *, void *);
 237 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
 238 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
 239                                             const char *devname, bool is_smb3);
 240 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol);
 241 extern void cifs_umount(struct cifs_sb_info *);
 242 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
 243 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
 244
 245 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
 246                                     __u64 length, __u8 type, __u16 flags,
 247                                     struct cifsLockInfo **conf_lock,
 248                                     int rw_check);
 249 extern void cifs_add_pending_open(struct cifs_fid *fid,
 250                                   struct tcon_link *tlink,
 251                                   struct cifs_pending_open *open);
 252 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
 253                                          struct tcon_link *tlink,
 254                                          struct cifs_pending_open *open);
 255 extern void cifs_del_pending_open(struct cifs_pending_open *open);
 256 extern struct TCP_Server_Info *cifs_get_tcp_session(struct smb_vol *vol);
 257 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
 258                                  int from_reconnect);
 259 extern void cifs_put_tcon(struct cifs_tcon *tcon);
 260
 261 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
 262 extern void cifs_dfs_release_automount_timer(void);
 263 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 264 #define cifs_dfs_release_automount_timer()      do { } while (0)
 265 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
 266
 267 void cifs_proc_init(void);
 268 void cifs_proc_clean(void);
 269
 270 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
 271 extern void cifs_free_llist(struct list_head *llist);
 272 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
 273
 274 extern int cifs_negotiate_protocol(const unsigned int xid,
 275                                    struct cifs_ses *ses);
 276 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 277                               struct nls_table *nls_info);
 278 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
 279 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
 280
 281 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
 282                     const char *tree, struct cifs_tcon *tcon,
 283                     const struct nls_table *);
 284
 285 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
 286                 const char *searchName, struct cifs_sb_info *cifs_sb,
 287                 __u16 *searchHandle, __u16 search_flags,
 288                 struct cifs_search_info *psrch_inf,
 289                 bool msearch);
 290
 291 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
 292                 __u16 searchHandle, __u16 search_flags,
 293                 struct cifs_search_info *psrch_inf);
 294
 295 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
 296                         const __u16 search_handle);
 297
 298 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 299                         u16 netfid, FILE_ALL_INFO *pFindData);
 300 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 301                             const char *search_Name, FILE_ALL_INFO *data,
 302                             int legacy /* whether to use old info level */,
 303                             const struct nls_table *nls_codepage, int remap);
 304 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
 305                                const char *search_name, FILE_ALL_INFO *data,
 306                                const struct nls_table *nls_codepage, int remap);
 307
 308 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 309                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 310 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
 311                         struct cifs_tcon *tcon,
 312                         const unsigned char *searchName,
 313                         FILE_UNIX_BASIC_INFO *pFindData,
 314                         const struct nls_table *nls_codepage, int remap);
 315
 316 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
 317                            const char *search_name,
 318                            struct dfs_info3_param **target_nodes,
 319                            unsigned int *num_of_nodes,
 320                            const struct nls_table *nls_codepage, int remap);
 321
 322 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
 323                                unsigned int *num_of_nodes,
 324                                struct dfs_info3_param **target_nodes,
 325                                const struct nls_table *nls_codepage, int remap,
 326                                const char *searchName, bool is_unicode);
 327 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
 328                                  struct cifs_sb_info *cifs_sb,
 329                                  struct smb_vol *vol);
 330 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 331                         struct kstatfs *FSData);
 332 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
 333                         struct kstatfs *FSData);
 334 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 335                         __u64 cap);
 336
 337 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
 338                         struct cifs_tcon *tcon);
 339 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
 340 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
 341 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
 342                         struct kstatfs *FSData);
 343
 344 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
 345                         const char *fileName, const FILE_BASIC_INFO *data,
 346                         const struct nls_table *nls_codepage,
 347                         int remap_special_chars);
 348 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
 349                         const FILE_BASIC_INFO *data, __u16 fid,
 350                         __u32 pid_of_opener);
 351 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
 352                                      struct cifs_tcon *tcon,
 353                                      bool delete_file, __u16 fid,
 354                                      __u32 pid_of_opener);
 355 #if 0
 356 extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,
 357                         char *fileName, __u16 dos_attributes,
 358                         const struct nls_table *nls_codepage);
 359 #endif /* possibly unneeded function */
 360 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
 361                          const char *file_name, __u64 size,
 362                          struct cifs_sb_info *cifs_sb, bool set_allocation);
 363 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 364                               struct cifsFileInfo *cfile, __u64 size,
 365                               bool set_allocation);
 366
 367 struct cifs_unix_set_info_args {
 368         __u64   ctime;
 369         __u64   atime;
 370         __u64   mtime;
 371         __u64   mode;
 372         kuid_t  uid;
 373         kgid_t  gid;
 374         dev_t   device;
 375 };
 376
 377 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 378                                   struct cifs_tcon *tcon,
 379                                   const struct cifs_unix_set_info_args *args,
 380                                   u16 fid, u32 pid_of_opener);
 381
 382 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
 383                                   struct cifs_tcon *tcon, const char *file_name,
 384                                   const struct cifs_unix_set_info_args *args,
 385                                   const struct nls_table *nls_codepage,
 386                                   int remap);
 387
 388 extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode,
 389                         umode_t mode, struct cifs_tcon *tcon,
 390                         const char *name, struct cifs_sb_info *cifs_sb);
 391 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
 392                         const char *name, struct cifs_sb_info *cifs_sb);
 393 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 394                         const char *name, __u16 type,
 395                         const struct nls_table *nls_codepage,
 396                         int remap_special_chars);
 397 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
 398                           const char *name, struct cifs_sb_info *cifs_sb);
 399 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
 400                          const char *from_name, const char *to_name,
 401                          struct cifs_sb_info *cifs_sb);
 402 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
 403                                  int netfid, const char *target_name,
 404                                  const struct nls_table *nls_codepage,
 405                                  int remap_special_chars);
 406 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
 407                               const char *from_name, const char *to_name,
 408                               struct cifs_sb_info *cifs_sb);
 409 extern int CIFSUnixCreateHardLink(const unsigned int xid,
 410                         struct cifs_tcon *tcon,
 411                         const char *fromName, const char *toName,
 412                         const struct nls_table *nls_codepage,
 413                         int remap_special_chars);
 414 extern int CIFSUnixCreateSymLink(const unsigned int xid,
 415                         struct cifs_tcon *tcon,
 416                         const char *fromName, const char *toName,
 417                         const struct nls_table *nls_codepage, int remap);
 418 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
 419                         struct cifs_tcon *tcon,
 420                         const unsigned char *searchName, char **syminfo,
 421                         const struct nls_table *nls_codepage, int remap);
 422 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 423                                __u16 fid, char **symlinkinfo,
 424                                const struct nls_table *nls_codepage);
 425 extern int CIFSSMB_set_compression(const unsigned int xid,
 426                                    struct cifs_tcon *tcon, __u16 fid);
 427 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
 428                      int *oplock, FILE_ALL_INFO *buf);
 429 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
 430                         const char *fileName, const int disposition,
 431                         const int access_flags, const int omode,
 432                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 433                         const struct nls_table *nls_codepage, int remap);
 434 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
 435                         u32 posix_flags, __u64 mode, __u16 *netfid,
 436                         FILE_UNIX_BASIC_INFO *pRetData,
 437                         __u32 *pOplock, const char *name,
 438                         const struct nls_table *nls_codepage, int remap);
 439 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
 440                         const int smb_file_id);
 441
 442 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
 443                         const int smb_file_id);
 444
 445 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
 446                         unsigned int *nbytes, char **buf,
 447                         int *return_buf_type);
 448 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
 449                         unsigned int *nbytes, const char *buf);
 450 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
 451                         unsigned int *nbytes, struct kvec *iov, const int nvec);
 452 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
 453                                  const char *search_name, __u64 *inode_number,
 454                                  const struct nls_table *nls_codepage,
 455                                  int remap);
 456
 457 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
 458                       const __u16 netfid, const __u8 lock_type,
 459                       const __u32 num_unlock, const __u32 num_lock,
 460                       LOCKING_ANDX_RANGE *buf);
 461 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
 462                         const __u16 netfid, const __u32 netpid, const __u64 len,
 463                         const __u64 offset, const __u32 numUnlock,
 464                         const __u32 numLock, const __u8 lockType,
 465                         const bool waitFlag, const __u8 oplock_level);
 466 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
 467                         const __u16 smb_file_id, const __u32 netpid,
 468                         const loff_t start_offset, const __u64 len,
 469                         struct file_lock *, const __u16 lock_type,
 470                         const bool waitFlag);
 471 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
 472 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
 473 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
 474
 475 extern struct cifs_ses *sesInfoAlloc(void);
 476 extern void sesInfoFree(struct cifs_ses *);
 477 extern struct cifs_tcon *tconInfoAlloc(void);
 478 extern void tconInfoFree(struct cifs_tcon *);
 479
 480 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
 481                    __u32 *pexpected_response_sequence_number);
 482 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
 483                           __u32 *);
 484 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 485 extern int cifs_verify_signature(struct smb_rqst *rqst,
 486                                  struct TCP_Server_Info *server,
 487                                 __u32 expected_sequence_number);
 488 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
 489                         const struct nls_table *);
 490 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
 491 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 492 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
 493 extern int calc_seckey(struct cifs_ses *);
 494 extern int generate_smb30signingkey(struct cifs_ses *);
 495 extern int generate_smb311signingkey(struct cifs_ses *);
 496
 497 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 498 extern int calc_lanman_hash(const char *password, const char *cryptkey,
 499                                 bool encrypt, char *lnm_session_key);
 500 #endif /* CIFS_WEAK_PW_HASH */
 501 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
 502 extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
 503                         const int notify_subdirs, const __u16 netfid,
 504                         __u32 filter, struct file *file, int multishot,
 505                         const struct nls_table *nls_codepage);
 506 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
 507 extern int CIFSSMBCopy(unsigned int xid,
 508                         struct cifs_tcon *source_tcon,
 509                         const char *fromName,
 510                         const __u16 target_tid,
 511                         const char *toName, const int flags,
 512                         const struct nls_table *nls_codepage,
 513                         int remap_special_chars);
 514 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
 515                         const unsigned char *searchName,
 516                         const unsigned char *ea_name, char *EAData,
 517                         size_t bufsize, struct cifs_sb_info *cifs_sb);
 518 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
 519                 const char *fileName, const char *ea_name,
 520                 const void *ea_value, const __u16 ea_value_len,
 521                 const struct nls_table *nls_codepage,
 522                 struct cifs_sb_info *cifs_sb);
 523 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
 524                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
 525 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
 526                         struct cifs_ntsd *, __u32, int);
 527 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
 528                 const unsigned char *searchName,
 529                 char *acl_inf, const int buflen, const int acl_type,
 530                 const struct nls_table *nls_codepage, int remap_special_chars);
 531 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
 532                 const unsigned char *fileName,
 533                 const char *local_acl, const int buflen, const int acl_type,
 534                 const struct nls_table *nls_codepage, int remap_special_chars);
 535 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
 536                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 537 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 538 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
 539 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 540                               struct cifs_sb_info *cifs_sb,
 541                               struct cifs_fattr *fattr,
 542                               const unsigned char *path);
 543 extern int mdfour(unsigned char *, unsigned char *, int);
 544 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
 545                         const struct nls_table *codepage);
 546 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 547                         unsigned char *p24);
 548
 549 extern int
 550 cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
 551                        const char *devname, bool is_smb3);
 552 extern void
 553 cifs_cleanup_volume_info_contents(struct smb_vol *volume_info);
 554
 555 extern struct TCP_Server_Info *
 556 cifs_find_tcp_session(struct smb_vol *vol);
 557
 558 extern void cifs_put_smb_ses(struct cifs_ses *ses);
 559
 560 extern struct cifs_ses *
 561 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info);
 562
 563 void cifs_readdata_release(struct kref *refcount);
 564 int cifs_async_readv(struct cifs_readdata *rdata);
 565 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
 566
 567 int cifs_async_writev(struct cifs_writedata *wdata,
 568                       void (*release)(struct kref *kref));
 569 void cifs_writev_complete(struct work_struct *work);
 570 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
 571                                                 work_func_t complete);
 572 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
 573                                                 work_func_t complete);
 574 void cifs_writedata_release(struct kref *refcount);
 575 int cifs_query_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_read);
 579 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 580                            struct cifs_sb_info *cifs_sb,
 581                            const unsigned char *path, char *pbuf,
 582                            unsigned int *pbytes_written);
 583 int __cifs_calc_signature(struct smb_rqst *rqst,
 584                         struct TCP_Server_Info *server, char *signature,
 585                         struct shash_desc *shash);
 586 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
 587                                         enum securityEnum);
 588 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
 589 void cifs_aio_ctx_release(struct kref *refcount);
 590 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
 591 void smb2_cached_lease_break(struct work_struct *work);
 592
 593 int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
 594                     struct sdesc **sdesc);
 595 void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
 596
 597 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
 598                                 unsigned int *len, unsigned int *offset);
 599 struct cifs_chan *
 600 cifs_ses_find_chan(struct cifs_ses *ses, struct TCP_Server_Info *server);
 601 int cifs_try_adding_channels(struct cifs_ses *ses);
 602 int cifs_ses_add_channel(struct cifs_ses *ses,
 603                                 struct cifs_server_iface *iface);
 604 bool is_server_using_iface(struct TCP_Server_Info *server,
 605                            struct cifs_server_iface *iface);
 606 bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface);
 607
 608 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
 609 int copy_path_name(char *dst, const char *src);
 610 int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov,
 611                                int resp_buftype,
 612                                struct cifs_search_info *srch_inf);
 613
 614 struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server);
 615 void cifs_put_tcp_super(struct super_block *sb);
 616 int update_super_prepath(struct cifs_tcon *tcon, const char *prefix,
 617                          size_t prefix_len);
 618
 619 #ifdef CONFIG_CIFS_DFS_UPCALL
 620 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
 621                                const char *old_path,
 622                                const struct nls_table *nls_codepage,
 623                                struct dfs_info3_param *referral, int remap)
 624 {
 625         return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
 626                               referral, NULL);
 627 }
 628
 629 int match_target_ip(struct TCP_Server_Info *server,
 630                     const char *share, size_t share_len,
 631                     bool *result);
 632 #endif
 633
 634 static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options)
 635 {
 636         if (cifs_sb && (backup_cred(cifs_sb)))
 637                 return options | CREATE_OPEN_BACKUP_INTENT;
 638         else
 639                 return options;
 640 }
 641
 642 #endif                  /* _CIFSPROTO_H */