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Linux/fs/cifs/cifsproto.h

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  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, "CIFS 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, "CIFS 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 int cifs_discard_remaining_data(struct TCP_Server_Info *server);
 93 extern int cifs_call_async(struct TCP_Server_Info *server,
 94                         struct smb_rqst *rqst,
 95                         mid_receive_t *receive, mid_callback_t *callback,
 96                         mid_handle_t *handle, void *cbdata, const int flags,
 97                         const struct cifs_credits *exist_credits);
 98 extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
 99                           struct smb_rqst *rqst, int *resp_buf_type,
100                           const int flags, struct kvec *resp_iov);
101 extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
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 smb_rqst *);
113 extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
114                                                 struct smb_rqst *);
115 extern int cifs_check_receive(struct mid_q_entry *mid,
116                         struct TCP_Server_Info *server, bool log_error);
117 extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server,
118                                  unsigned int size, unsigned int *num,
119                                  struct cifs_credits *credits);
120 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
121                         struct kvec *, int /* nvec to send */,
122                         int * /* type of buf returned */, const int flags,
123                         struct kvec * /* resp vec */);
124 extern int SendReceiveBlockingLock(const unsigned int xid,
125                         struct cifs_tcon *ptcon,
126                         struct smb_hdr *in_buf ,
127                         struct smb_hdr *out_buf,
128                         int *bytes_returned);
129 extern int cifs_reconnect(struct TCP_Server_Info *server);
130 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
131 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
132 extern bool backup_cred(struct cifs_sb_info *);
133 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
134 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
135                             unsigned int bytes_written);
136 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
137 extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
138                                   bool fsuid_only,
139                                   struct cifsFileInfo **ret_file);
140 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
141 extern unsigned int smbCalcSize(void *buf, struct TCP_Server_Info *server);
142 extern int decode_negTokenInit(unsigned char *security_blob, int length,
143                         struct TCP_Server_Info *server);
144 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
145 extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port);
146 extern int map_smb_to_linux_error(char *buf, bool logErr);
147 extern void header_assemble(struct smb_hdr *, char /* command */ ,
148                             const struct cifs_tcon *, int /* length of
149                             fixed section (word count) in two byte units */);
150 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
151                                 struct cifs_ses *ses,
152                                 void **request_buf);
153 extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
154                                 enum securityEnum requested);
155 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
156                           const struct nls_table *nls_cp);
157 extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
158 extern u64 cifs_UnixTimeToNT(struct timespec64);
159 extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
160                                       int offset);
161 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
162 extern int cifs_get_writer(struct cifsInodeInfo *cinode);
163 extern void cifs_put_writer(struct cifsInodeInfo *cinode);
164 extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
165 extern int cifs_unlock_range(struct cifsFileInfo *cfile,
166                              struct file_lock *flock, const unsigned int xid);
167 extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
168 
169 extern void cifs_down_write(struct rw_semaphore *sem);
170 extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
171                                               struct file *file,
172                                               struct tcon_link *tlink,
173                                               __u32 oplock);
174 extern int cifs_posix_open(char *full_path, struct inode **inode,
175                            struct super_block *sb, int mode,
176                            unsigned int f_flags, __u32 *oplock, __u16 *netfid,
177                            unsigned int xid);
178 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
179 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
180                                      FILE_UNIX_BASIC_INFO *info,
181                                      struct cifs_sb_info *cifs_sb);
182 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
183                                         struct cifs_sb_info *);
184 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
185 extern struct inode *cifs_iget(struct super_block *sb,
186                                struct cifs_fattr *fattr);
187 
188 extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
189                                FILE_ALL_INFO *data, struct super_block *sb,
190                                int xid, const struct cifs_fid *fid);
191 extern int cifs_get_inode_info_unix(struct inode **pinode,
192                         const unsigned char *search_path,
193                         struct super_block *sb, unsigned int xid);
194 extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
195                               unsigned int xid, char *full_path, __u32 dosattr);
196 extern int cifs_rename_pending_delete(const char *full_path,
197                                       struct dentry *dentry,
198                                       const unsigned int xid);
199 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
200                               struct cifs_fattr *fattr, struct inode *inode,
201                               const char *path, const struct cifs_fid *pfid);
202 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
203                                         kuid_t, kgid_t);
204 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
205                                         const char *, u32 *);
206 extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
207                                                 const struct cifs_fid *, u32 *);
208 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
209                                 const char *, int);
210 
211 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
212 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
213                                  unsigned int to_read);
214 extern int cifs_read_page_from_socket(struct TCP_Server_Info *server,
215                                         struct page *page,
216                                         unsigned int page_offset,
217                                         unsigned int to_read);
218 extern int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
219                                struct cifs_sb_info *cifs_sb);
220 extern int cifs_match_super(struct super_block *, void *);
221 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
222 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
223                                             const char *devname, bool is_smb3);
224 extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol);
225 extern void cifs_umount(struct cifs_sb_info *);
226 extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon);
227 extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon);
228 
229 extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
230                                     __u64 length, __u8 type, __u16 flags,
231                                     struct cifsLockInfo **conf_lock,
232                                     int rw_check);
233 extern void cifs_add_pending_open(struct cifs_fid *fid,
234                                   struct tcon_link *tlink,
235                                   struct cifs_pending_open *open);
236 extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
237                                          struct tcon_link *tlink,
238                                          struct cifs_pending_open *open);
239 extern void cifs_del_pending_open(struct cifs_pending_open *open);
240 extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
241                                  int from_reconnect);
242 extern void cifs_put_tcon(struct cifs_tcon *tcon);
243 
244 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
245 extern void cifs_dfs_release_automount_timer(void);
246 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
247 #define cifs_dfs_release_automount_timer()      do { } while (0)
248 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
249 
250 void cifs_proc_init(void);
251 void cifs_proc_clean(void);
252 
253 extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
254 extern void cifs_free_llist(struct list_head *llist);
255 extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
256 
257 extern int cifs_negotiate_protocol(const unsigned int xid,
258                                    struct cifs_ses *ses);
259 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
260                               struct nls_table *nls_info);
261 extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required);
262 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
263 
264 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
265                     const char *tree, struct cifs_tcon *tcon,
266                     const struct nls_table *);
267 
268 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
269                 const char *searchName, struct cifs_sb_info *cifs_sb,
270                 __u16 *searchHandle, __u16 search_flags,
271                 struct cifs_search_info *psrch_inf,
272                 bool msearch);
273 
274 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
275                 __u16 searchHandle, __u16 search_flags,
276                 struct cifs_search_info *psrch_inf);
277 
278 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
279                         const __u16 search_handle);
280 
281 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
282                         u16 netfid, FILE_ALL_INFO *pFindData);
283 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
284                             const char *search_Name, FILE_ALL_INFO *data,
285                             int legacy /* whether to use old info level */,
286                             const struct nls_table *nls_codepage, int remap);
287 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
288                                const char *search_name, FILE_ALL_INFO *data,
289                                const struct nls_table *nls_codepage, int remap);
290 
291 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
292                         u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
293 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
294                         struct cifs_tcon *tcon,
295                         const unsigned char *searchName,
296                         FILE_UNIX_BASIC_INFO *pFindData,
297                         const struct nls_table *nls_codepage, int remap);
298 
299 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
300                            const char *search_name,
301                            struct dfs_info3_param **target_nodes,
302                            unsigned int *num_of_nodes,
303                            const struct nls_table *nls_codepage, int remap);
304 
305 extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
306                                unsigned int *num_of_nodes,
307                                struct dfs_info3_param **target_nodes,
308                                const struct nls_table *nls_codepage, int remap,
309                                const char *searchName, bool is_unicode);
310 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
311                                  struct cifs_sb_info *cifs_sb,
312                                  struct smb_vol *vol);
313 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
314                         struct kstatfs *FSData);
315 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
316                         struct kstatfs *FSData);
317 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
318                         __u64 cap);
319 
320 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
321                         struct cifs_tcon *tcon);
322 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
323 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
324 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
325                         struct kstatfs *FSData);
326 
327 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
328                         const char *fileName, const FILE_BASIC_INFO *data,
329                         const struct nls_table *nls_codepage,
330                         int remap_special_chars);
331 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
332                         const FILE_BASIC_INFO *data, __u16 fid,
333                         __u32 pid_of_opener);
334 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
335                                      struct cifs_tcon *tcon,
336                                      bool delete_file, __u16 fid,
337                                      __u32 pid_of_opener);
338 #if 0
339 extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,
340                         char *fileName, __u16 dos_attributes,
341                         const struct nls_table *nls_codepage);
342 #endif /* possibly unneeded function */
343 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
344                          const char *file_name, __u64 size,
345                          struct cifs_sb_info *cifs_sb, bool set_allocation);
346 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
347                               struct cifsFileInfo *cfile, __u64 size,
348                               bool set_allocation);
349 
350 struct cifs_unix_set_info_args {
351         __u64   ctime;
352         __u64   atime;
353         __u64   mtime;
354         __u64   mode;
355         kuid_t  uid;
356         kgid_t  gid;
357         dev_t   device;
358 };
359 
360 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
361                                   struct cifs_tcon *tcon,
362                                   const struct cifs_unix_set_info_args *args,
363                                   u16 fid, u32 pid_of_opener);
364 
365 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
366                                   struct cifs_tcon *tcon, const char *file_name,
367                                   const struct cifs_unix_set_info_args *args,
368                                   const struct nls_table *nls_codepage,
369                                   int remap);
370 
371 extern int CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon,
372                         const char *name, struct cifs_sb_info *cifs_sb);
373 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
374                         const char *name, struct cifs_sb_info *cifs_sb);
375 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
376                         const char *name, __u16 type,
377                         const struct nls_table *nls_codepage,
378                         int remap_special_chars);
379 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
380                           const char *name, struct cifs_sb_info *cifs_sb);
381 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
382                          const char *from_name, const char *to_name,
383                          struct cifs_sb_info *cifs_sb);
384 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
385                                  int netfid, const char *target_name,
386                                  const struct nls_table *nls_codepage,
387                                  int remap_special_chars);
388 extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
389                               const char *from_name, const char *to_name,
390                               struct cifs_sb_info *cifs_sb);
391 extern int CIFSUnixCreateHardLink(const unsigned int xid,
392                         struct cifs_tcon *tcon,
393                         const char *fromName, const char *toName,
394                         const struct nls_table *nls_codepage,
395                         int remap_special_chars);
396 extern int CIFSUnixCreateSymLink(const unsigned int xid,
397                         struct cifs_tcon *tcon,
398                         const char *fromName, const char *toName,
399                         const struct nls_table *nls_codepage, int remap);
400 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
401                         struct cifs_tcon *tcon,
402                         const unsigned char *searchName, char **syminfo,
403                         const struct nls_table *nls_codepage, int remap);
404 extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
405                                __u16 fid, char **symlinkinfo,
406                                const struct nls_table *nls_codepage);
407 extern int CIFSSMB_set_compression(const unsigned int xid,
408                                    struct cifs_tcon *tcon, __u16 fid);
409 extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
410                      int *oplock, FILE_ALL_INFO *buf);
411 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
412                         const char *fileName, const int disposition,
413                         const int access_flags, const int omode,
414                         __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
415                         const struct nls_table *nls_codepage, int remap);
416 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
417                         u32 posix_flags, __u64 mode, __u16 *netfid,
418                         FILE_UNIX_BASIC_INFO *pRetData,
419                         __u32 *pOplock, const char *name,
420                         const struct nls_table *nls_codepage, int remap);
421 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
422                         const int smb_file_id);
423 
424 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
425                         const int smb_file_id);
426 
427 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
428                         unsigned int *nbytes, char **buf,
429                         int *return_buf_type);
430 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
431                         unsigned int *nbytes, const char *buf);
432 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
433                         unsigned int *nbytes, struct kvec *iov, const int nvec);
434 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
435                                  const char *search_name, __u64 *inode_number,
436                                  const struct nls_table *nls_codepage,
437                                  int remap);
438 
439 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
440                       const __u16 netfid, const __u8 lock_type,
441                       const __u32 num_unlock, const __u32 num_lock,
442                       LOCKING_ANDX_RANGE *buf);
443 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
444                         const __u16 netfid, const __u32 netpid, const __u64 len,
445                         const __u64 offset, const __u32 numUnlock,
446                         const __u32 numLock, const __u8 lockType,
447                         const bool waitFlag, const __u8 oplock_level);
448 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
449                         const __u16 smb_file_id, const __u32 netpid,
450                         const loff_t start_offset, const __u64 len,
451                         struct file_lock *, const __u16 lock_type,
452                         const bool waitFlag);
453 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
454 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
455 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
456 
457 extern struct cifs_ses *sesInfoAlloc(void);
458 extern void sesInfoFree(struct cifs_ses *);
459 extern struct cifs_tcon *tconInfoAlloc(void);
460 extern void tconInfoFree(struct cifs_tcon *);
461 
462 extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
463                    __u32 *pexpected_response_sequence_number);
464 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
465                           __u32 *);
466 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
467 extern int cifs_verify_signature(struct smb_rqst *rqst,
468                                  struct TCP_Server_Info *server,
469                                 __u32 expected_sequence_number);
470 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
471                         const struct nls_table *);
472 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
473 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
474 extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server);
475 extern int calc_seckey(struct cifs_ses *);
476 extern int generate_smb30signingkey(struct cifs_ses *);
477 extern int generate_smb311signingkey(struct cifs_ses *);
478 
479 #ifdef CONFIG_CIFS_WEAK_PW_HASH
480 extern int calc_lanman_hash(const char *password, const char *cryptkey,
481                                 bool encrypt, char *lnm_session_key);
482 #endif /* CIFS_WEAK_PW_HASH */
483 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
484 extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
485                         const int notify_subdirs, const __u16 netfid,
486                         __u32 filter, struct file *file, int multishot,
487                         const struct nls_table *nls_codepage);
488 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
489 extern int CIFSSMBCopy(unsigned int xid,
490                         struct cifs_tcon *source_tcon,
491                         const char *fromName,
492                         const __u16 target_tid,
493                         const char *toName, const int flags,
494                         const struct nls_table *nls_codepage,
495                         int remap_special_chars);
496 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
497                         const unsigned char *searchName,
498                         const unsigned char *ea_name, char *EAData,
499                         size_t bufsize, struct cifs_sb_info *cifs_sb);
500 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
501                 const char *fileName, const char *ea_name,
502                 const void *ea_value, const __u16 ea_value_len,
503                 const struct nls_table *nls_codepage,
504                 struct cifs_sb_info *cifs_sb);
505 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
506                         __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
507 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
508                         struct cifs_ntsd *, __u32, int);
509 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
510                 const unsigned char *searchName,
511                 char *acl_inf, const int buflen, const int acl_type,
512                 const struct nls_table *nls_codepage, int remap_special_chars);
513 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
514                 const unsigned char *fileName,
515                 const char *local_acl, const int buflen, const int acl_type,
516                 const struct nls_table *nls_codepage, int remap_special_chars);
517 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
518                         const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
519 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
520 extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
521 extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
522                               struct cifs_sb_info *cifs_sb,
523                               struct cifs_fattr *fattr,
524                               const unsigned char *path);
525 extern int mdfour(unsigned char *, unsigned char *, int);
526 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
527                         const struct nls_table *codepage);
528 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
529                         unsigned char *p24);
530 
531 extern int
532 cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
533                        const char *devname, bool is_smb3);
534 extern void
535 cifs_cleanup_volume_info_contents(struct smb_vol *volume_info);
536 
537 extern struct TCP_Server_Info *
538 cifs_find_tcp_session(struct smb_vol *vol);
539 
540 extern void cifs_put_smb_ses(struct cifs_ses *ses);
541 
542 extern struct cifs_ses *
543 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info);
544 
545 void cifs_readdata_release(struct kref *refcount);
546 int cifs_async_readv(struct cifs_readdata *rdata);
547 int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
548 
549 int cifs_async_writev(struct cifs_writedata *wdata,
550                       void (*release)(struct kref *kref));
551 void cifs_writev_complete(struct work_struct *work);
552 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
553                                                 work_func_t complete);
554 struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages,
555                                                 work_func_t complete);
556 void cifs_writedata_release(struct kref *refcount);
557 int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
558                           struct cifs_sb_info *cifs_sb,
559                           const unsigned char *path, char *pbuf,
560                           unsigned int *pbytes_read);
561 int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
562                            struct cifs_sb_info *cifs_sb,
563                            const unsigned char *path, char *pbuf,
564                            unsigned int *pbytes_written);
565 int __cifs_calc_signature(struct smb_rqst *rqst,
566                         struct TCP_Server_Info *server, char *signature,
567                         struct shash_desc *shash);
568 enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
569                                         enum securityEnum);
570 struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
571 void cifs_aio_ctx_release(struct kref *refcount);
572 int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
573 void smb2_cached_lease_break(struct work_struct *work);
574 
575 int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
576                     struct sdesc **sdesc);
577 void cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc);
578 
579 extern void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
580                                 unsigned int *len, unsigned int *offset);
581 
582 void extract_unc_hostname(const char *unc, const char **h, size_t *len);
583 int copy_path_name(char *dst, const char *src);
584 
585 #ifdef CONFIG_CIFS_DFS_UPCALL
586 static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
587                                const char *old_path,
588                                const struct nls_table *nls_codepage,
589                                struct dfs_info3_param *referral, int remap)
590 {
591         return dfs_cache_find(xid, ses, nls_codepage, remap, old_path,
592                               referral, NULL);
593 }
594 #endif
595 
596 #endif                  /* _CIFSPROTO_H */
597 

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