4 * Copyright (c) International Business Machines Corp., 2002,2008
5 * Author(s): Steve French (sfrench@us.ibm.com)
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.
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.
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
23 #include <linux/nls.h>
29 *****************************************************************
31 *****************************************************************
34 extern struct smb_hdr *cifs_buf_get(void);
35 extern void cifs_buf_release(void *);
36 extern struct smb_hdr *cifs_small_buf_get(void);
37 extern void cifs_small_buf_release(void *);
38 extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
39 unsigned int /* length */);
40 extern unsigned int _get_xid(void);
41 extern void _free_xid(unsigned int);
44 unsigned int __xid = _get_xid(); \
45 cFYI(1, "CIFS VFS: in %s as Xid: %u with uid: %d", \
46 __func__, __xid, current_fsuid()); \
50 #define free_xid(curr_xid) \
52 _free_xid(curr_xid); \
53 cFYI(1, "CIFS VFS: leaving %s (xid = %u) rc = %d", \
54 __func__, curr_xid, (int)rc); \
56 extern int init_cifs_idmap(void);
57 extern void exit_cifs_idmap(void);
58 extern void cifs_destroy_idmaptrees(void);
59 extern char *build_path_from_dentry(struct dentry *);
60 extern char *cifs_build_path_to_root(struct smb_vol *vol,
61 struct cifs_sb_info *cifs_sb,
62 struct cifs_tcon *tcon);
63 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
64 extern char *cifs_compose_mount_options(const char *sb_mountdata,
65 const char *fullpath, const struct dfs_info3_param *ref,
67 /* extern void renew_parental_timestamps(struct dentry *direntry);*/
68 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
69 struct TCP_Server_Info *server);
70 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
71 extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
72 unsigned int nvec, mid_receive_t *receive,
73 mid_callback_t *callback, void *cbdata,
75 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
76 struct smb_hdr * /* input */ ,
77 struct smb_hdr * /* out */ ,
78 int * /* bytes returned */ , const int);
79 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
80 char *in_buf, int flags);
81 extern int cifs_setup_request(struct cifs_ses *, struct kvec *, unsigned int,
82 struct mid_q_entry **);
83 extern int cifs_check_receive(struct mid_q_entry *mid,
84 struct TCP_Server_Info *server, bool log_error);
85 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
86 struct kvec *, int /* nvec to send */,
87 int * /* type of buf returned */ , const int flags);
88 extern int SendReceiveBlockingLock(const unsigned int xid,
89 struct cifs_tcon *ptcon,
90 struct smb_hdr *in_buf ,
91 struct smb_hdr *out_buf,
93 extern int checkSMB(char *buf, unsigned int length);
94 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
95 extern bool backup_cred(struct cifs_sb_info *);
96 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
97 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
98 unsigned int bytes_written);
99 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
100 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
101 extern unsigned int smbCalcSize(struct smb_hdr *ptr);
102 extern int decode_negTokenInit(unsigned char *security_blob, int length,
103 struct TCP_Server_Info *server);
104 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
105 extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
106 extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
107 const unsigned short int port);
108 extern int map_smb_to_linux_error(char *buf, bool logErr);
109 extern void header_assemble(struct smb_hdr *, char /* command */ ,
110 const struct cifs_tcon *, int /* length of
111 fixed section (word count) in two byte units */);
112 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
113 struct cifs_ses *ses,
115 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
116 const struct nls_table *nls_cp);
117 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
118 extern u64 cifs_UnixTimeToNT(struct timespec);
119 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
121 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
123 extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
124 struct file *file, struct tcon_link *tlink,
126 extern int cifs_posix_open(char *full_path, struct inode **inode,
127 struct super_block *sb, int mode,
128 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
130 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
131 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
132 FILE_UNIX_BASIC_INFO *info,
133 struct cifs_sb_info *cifs_sb);
134 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
135 extern struct inode *cifs_iget(struct super_block *sb,
136 struct cifs_fattr *fattr);
138 extern int cifs_get_file_info(struct file *filp);
139 extern int cifs_get_inode_info(struct inode **pinode,
140 const unsigned char *search_path,
141 FILE_ALL_INFO *pfile_info,
142 struct super_block *sb, unsigned int xid,
144 extern int cifs_get_file_info_unix(struct file *filp);
145 extern int cifs_get_inode_info_unix(struct inode **pinode,
146 const unsigned char *search_path,
147 struct super_block *sb, unsigned int xid);
148 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
149 struct cifs_fattr *fattr, struct inode *inode,
150 const char *path, const __u16 *pfid);
151 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
153 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
154 const char *, u32 *);
155 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
158 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
159 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
160 unsigned int to_read);
161 extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
162 struct kvec *iov_orig, unsigned int nr_segs,
163 unsigned int to_read);
164 extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
165 struct cifs_sb_info *cifs_sb);
166 extern int cifs_match_super(struct super_block *, void *);
167 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
168 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
169 const char *devname);
170 extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *);
171 extern void cifs_umount(struct cifs_sb_info *);
173 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
174 extern void cifs_dfs_release_automount_timer(void);
175 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
176 #define cifs_dfs_release_automount_timer() do { } while (0)
177 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
179 void cifs_proc_init(void);
180 void cifs_proc_clean(void);
182 extern int cifs_negotiate_protocol(const unsigned int xid,
183 struct cifs_ses *ses);
184 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
185 struct nls_table *nls_info);
186 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
188 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
189 const char *tree, struct cifs_tcon *tcon,
190 const struct nls_table *);
192 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
193 const char *searchName, const struct nls_table *nls_codepage,
194 __u16 *searchHandle, __u16 search_flags,
195 struct cifs_search_info *psrch_inf,
196 int map, const char dirsep);
198 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
199 __u16 searchHandle, __u16 search_flags,
200 struct cifs_search_info *psrch_inf);
202 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
203 const __u16 search_handle);
205 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
206 u16 netfid, FILE_ALL_INFO *pFindData);
207 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
208 const unsigned char *searchName,
209 FILE_ALL_INFO *findData,
210 int legacy /* whether to use old info level */,
211 const struct nls_table *nls_codepage, int remap);
212 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
213 const unsigned char *searchName,
214 FILE_ALL_INFO *findData,
215 const struct nls_table *nls_codepage, int remap);
217 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
218 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
219 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
220 struct cifs_tcon *tcon,
221 const unsigned char *searchName,
222 FILE_UNIX_BASIC_INFO *pFindData,
223 const struct nls_table *nls_codepage, int remap);
225 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
226 const unsigned char *searchName,
227 struct dfs_info3_param **target_nodes,
228 unsigned int *number_of_nodes_in_array,
229 const struct nls_table *nls_codepage, int remap);
231 extern int get_dfs_path(unsigned int xid, struct cifs_ses *pSesInfo,
232 const char *old_path,
233 const struct nls_table *nls_codepage,
234 unsigned int *pnum_referrals,
235 struct dfs_info3_param **preferrals,
237 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
238 struct cifs_sb_info *cifs_sb,
239 struct smb_vol *vol);
240 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
241 struct kstatfs *FSData);
242 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
243 struct kstatfs *FSData);
244 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
247 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
248 struct cifs_tcon *tcon);
249 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
250 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
251 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
252 struct kstatfs *FSData);
254 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
255 const char *fileName, const FILE_BASIC_INFO *data,
256 const struct nls_table *nls_codepage,
257 int remap_special_chars);
258 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
259 const FILE_BASIC_INFO *data, __u16 fid,
260 __u32 pid_of_opener);
261 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
262 struct cifs_tcon *tcon,
263 bool delete_file, __u16 fid,
264 __u32 pid_of_opener);
266 extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,
267 char *fileName, __u16 dos_attributes,
268 const struct nls_table *nls_codepage);
269 #endif /* possibly unneeded function */
270 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
271 const char *fileName, __u64 size,
272 bool setAllocationSizeFlag,
273 const struct nls_table *nls_codepage,
274 int remap_special_chars);
275 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
276 __u64 size, __u16 fileHandle, __u32 opener_pid,
279 struct cifs_unix_set_info_args {
289 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
290 struct cifs_tcon *tcon,
291 const struct cifs_unix_set_info_args *args,
292 u16 fid, u32 pid_of_opener);
294 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
295 struct cifs_tcon *tcon, char *file_name,
296 const struct cifs_unix_set_info_args *args,
297 const struct nls_table *nls_codepage,
298 int remap_special_chars);
300 extern int CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon,
302 const struct nls_table *nls_codepage,
303 int remap_special_chars);
304 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
305 const char *name, const struct nls_table *nls_codepage,
306 int remap_special_chars);
307 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
308 const char *name, __u16 type,
309 const struct nls_table *nls_codepage,
310 int remap_special_chars);
311 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
313 const struct nls_table *nls_codepage,
314 int remap_special_chars);
315 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
316 const char *fromName, const char *toName,
317 const struct nls_table *nls_codepage,
318 int remap_special_chars);
319 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
320 int netfid, const char *target_name,
321 const struct nls_table *nls_codepage,
322 int remap_special_chars);
323 extern int CIFSCreateHardLink(const unsigned int xid,
324 struct cifs_tcon *tcon,
325 const char *fromName, const char *toName,
326 const struct nls_table *nls_codepage,
327 int remap_special_chars);
328 extern int CIFSUnixCreateHardLink(const unsigned int xid,
329 struct cifs_tcon *tcon,
330 const char *fromName, const char *toName,
331 const struct nls_table *nls_codepage,
332 int remap_special_chars);
333 extern int CIFSUnixCreateSymLink(const unsigned int xid,
334 struct cifs_tcon *tcon,
335 const char *fromName, const char *toName,
336 const struct nls_table *nls_codepage);
337 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
338 struct cifs_tcon *tcon,
339 const unsigned char *searchName, char **syminfo,
340 const struct nls_table *nls_codepage);
341 #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
342 extern int CIFSSMBQueryReparseLinkInfo(const unsigned int xid,
343 struct cifs_tcon *tcon,
344 const unsigned char *searchName,
345 char *symlinkinfo, const int buflen, __u16 fid,
346 const struct nls_table *nls_codepage);
347 #endif /* temporarily unused until cifs_symlink fixed */
348 extern int CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
349 const char *fileName, const int disposition,
350 const int access_flags, const int omode,
351 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
352 const struct nls_table *nls_codepage, int remap);
353 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
354 const char *fileName, const int disposition,
355 const int access_flags, const int omode,
356 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
357 const struct nls_table *nls_codepage, int remap);
358 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
359 u32 posix_flags, __u64 mode, __u16 *netfid,
360 FILE_UNIX_BASIC_INFO *pRetData,
361 __u32 *pOplock, const char *name,
362 const struct nls_table *nls_codepage, int remap);
363 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
364 const int smb_file_id);
366 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
367 const int smb_file_id);
369 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
370 unsigned int *nbytes, char **buf,
371 int *return_buf_type);
372 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
373 unsigned int *nbytes, const char *buf,
374 const char __user *ubuf, const int long_op);
375 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
376 unsigned int *nbytes, struct kvec *iov, const int nvec,
378 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
379 const unsigned char *searchName, __u64 *inode_number,
380 const struct nls_table *nls_codepage,
381 int remap_special_chars);
383 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
384 const __u16 netfid, const __u8 lock_type,
385 const __u32 num_unlock, const __u32 num_lock,
386 LOCKING_ANDX_RANGE *buf);
387 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
388 const __u16 netfid, const __u32 netpid, const __u64 len,
389 const __u64 offset, const __u32 numUnlock,
390 const __u32 numLock, const __u8 lockType,
391 const bool waitFlag, const __u8 oplock_level);
392 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
393 const __u16 smb_file_id, const __u32 netpid,
394 const loff_t start_offset, const __u64 len,
395 struct file_lock *, const __u16 lock_type,
396 const bool waitFlag);
397 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
398 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
399 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
401 extern struct cifs_ses *sesInfoAlloc(void);
402 extern void sesInfoFree(struct cifs_ses *);
403 extern struct cifs_tcon *tconInfoAlloc(void);
404 extern void tconInfoFree(struct cifs_tcon *);
406 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
407 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
409 extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
410 struct TCP_Server_Info *server,
411 __u32 expected_sequence_number);
412 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
413 const struct nls_table *);
414 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
415 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
416 extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
417 extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
418 extern int calc_seckey(struct cifs_ses *);
420 #ifdef CONFIG_CIFS_WEAK_PW_HASH
421 extern int calc_lanman_hash(const char *password, const char *cryptkey,
422 bool encrypt, char *lnm_session_key);
423 #endif /* CIFS_WEAK_PW_HASH */
424 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
425 extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
426 const int notify_subdirs, const __u16 netfid,
427 __u32 filter, struct file *file, int multishot,
428 const struct nls_table *nls_codepage);
429 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
430 extern int CIFSSMBCopy(unsigned int xid,
431 struct cifs_tcon *source_tcon,
432 const char *fromName,
433 const __u16 target_tid,
434 const char *toName, const int flags,
435 const struct nls_table *nls_codepage,
436 int remap_special_chars);
437 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
438 const unsigned char *searchName,
439 const unsigned char *ea_name, char *EAData,
440 size_t bufsize, const struct nls_table *nls_codepage,
441 int remap_special_chars);
442 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
443 const char *fileName, const char *ea_name,
444 const void *ea_value, const __u16 ea_value_len,
445 const struct nls_table *nls_codepage, int remap_special_chars);
446 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
447 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
448 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
449 struct cifs_ntsd *, __u32, int);
450 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
451 const unsigned char *searchName,
452 char *acl_inf, const int buflen, const int acl_type,
453 const struct nls_table *nls_codepage, int remap_special_chars);
454 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
455 const unsigned char *fileName,
456 const char *local_acl, const int buflen, const int acl_type,
457 const struct nls_table *nls_codepage, int remap_special_chars);
458 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
459 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
460 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
461 extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
462 extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
463 const unsigned char *path,
464 struct cifs_sb_info *cifs_sb, unsigned int xid);
465 extern int mdfour(unsigned char *, unsigned char *, int);
466 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
467 const struct nls_table *codepage);
468 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
471 /* asynchronous read support */
472 struct cifs_readdata {
473 struct kref refcount;
474 struct list_head list;
475 struct completion done;
476 struct cifsFileInfo *cfile;
477 struct address_space *mapping;
482 struct list_head pages;
483 struct work_struct work;
484 int (*marshal_iov) (struct cifs_readdata *rdata,
485 unsigned int remaining);
490 void cifs_readdata_release(struct kref *refcount);
491 int cifs_async_readv(struct cifs_readdata *rdata);
493 /* asynchronous write support */
494 struct cifs_writedata {
495 struct kref refcount;
496 struct list_head list;
497 struct completion done;
498 enum writeback_sync_modes sync_mode;
499 struct work_struct work;
500 struct cifsFileInfo *cfile;
505 void (*marshal_iov) (struct kvec *iov,
506 struct cifs_writedata *wdata);
507 unsigned int nr_pages;
508 struct page *pages[1];
511 int cifs_async_writev(struct cifs_writedata *wdata);
512 void cifs_writev_complete(struct work_struct *work);
513 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
514 work_func_t complete);
515 void cifs_writedata_release(struct kref *refcount);
517 #endif /* _CIFSPROTO_H */