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 void cifs_wake_up_task(struct mid_q_entry *mid);
72 extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
73 unsigned int nvec, mid_receive_t *receive,
74 mid_callback_t *callback, void *cbdata,
76 extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
77 struct smb_hdr * /* input */ ,
78 struct smb_hdr * /* out */ ,
79 int * /* bytes returned */ , const int);
80 extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
81 char *in_buf, int flags);
82 extern int cifs_setup_request(struct cifs_ses *, struct kvec *, unsigned int,
83 struct mid_q_entry **);
84 extern int cifs_check_receive(struct mid_q_entry *mid,
85 struct TCP_Server_Info *server, bool log_error);
86 extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
87 struct kvec *, int /* nvec to send */,
88 int * /* type of buf returned */ , const int flags);
89 extern int SendReceiveBlockingLock(const unsigned int xid,
90 struct cifs_tcon *ptcon,
91 struct smb_hdr *in_buf ,
92 struct smb_hdr *out_buf,
94 extern int checkSMB(char *buf, unsigned int length);
95 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
96 extern bool backup_cred(struct cifs_sb_info *);
97 extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
98 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
99 unsigned int bytes_written);
100 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
101 extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
102 extern unsigned int smbCalcSize(struct smb_hdr *ptr);
103 extern int decode_negTokenInit(unsigned char *security_blob, int length,
104 struct TCP_Server_Info *server);
105 extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
106 extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
107 extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
108 const unsigned short int port);
109 extern int map_smb_to_linux_error(char *buf, bool logErr);
110 extern void header_assemble(struct smb_hdr *, char /* command */ ,
111 const struct cifs_tcon *, int /* length of
112 fixed section (word count) in two byte units */);
113 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
114 struct cifs_ses *ses,
116 extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
117 const struct nls_table *nls_cp);
118 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
119 extern u64 cifs_UnixTimeToNT(struct timespec);
120 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
122 extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
124 extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
125 struct file *file, struct tcon_link *tlink,
127 extern int cifs_posix_open(char *full_path, struct inode **inode,
128 struct super_block *sb, int mode,
129 unsigned int f_flags, __u32 *oplock, __u16 *netfid,
131 void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
132 extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
133 FILE_UNIX_BASIC_INFO *info,
134 struct cifs_sb_info *cifs_sb);
135 extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
136 extern struct inode *cifs_iget(struct super_block *sb,
137 struct cifs_fattr *fattr);
139 extern int cifs_get_file_info(struct file *filp);
140 extern int cifs_get_inode_info(struct inode **pinode,
141 const unsigned char *search_path,
142 FILE_ALL_INFO *pfile_info,
143 struct super_block *sb, unsigned int xid,
145 extern int cifs_get_file_info_unix(struct file *filp);
146 extern int cifs_get_inode_info_unix(struct inode **pinode,
147 const unsigned char *search_path,
148 struct super_block *sb, unsigned int xid);
149 extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
150 struct cifs_fattr *fattr, struct inode *inode,
151 const char *path, const __u16 *pfid);
152 extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
154 extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
155 const char *, u32 *);
156 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
159 extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
160 extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
161 unsigned int to_read);
162 extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
163 struct kvec *iov_orig, unsigned int nr_segs,
164 unsigned int to_read);
165 extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
166 struct cifs_sb_info *cifs_sb);
167 extern int cifs_match_super(struct super_block *, void *);
168 extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
169 extern struct smb_vol *cifs_get_volume_info(char *mount_data,
170 const char *devname);
171 extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *);
172 extern void cifs_umount(struct cifs_sb_info *);
174 #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
175 extern void cifs_dfs_release_automount_timer(void);
176 #else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
177 #define cifs_dfs_release_automount_timer() do { } while (0)
178 #endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
180 void cifs_proc_init(void);
181 void cifs_proc_clean(void);
183 extern int cifs_negotiate_protocol(const unsigned int xid,
184 struct cifs_ses *ses);
185 extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
186 struct nls_table *nls_info);
187 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
189 extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
190 const char *tree, struct cifs_tcon *tcon,
191 const struct nls_table *);
193 extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
194 const char *searchName, const struct nls_table *nls_codepage,
195 __u16 *searchHandle, __u16 search_flags,
196 struct cifs_search_info *psrch_inf,
197 int map, const char dirsep);
199 extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
200 __u16 searchHandle, __u16 search_flags,
201 struct cifs_search_info *psrch_inf);
203 extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
204 const __u16 search_handle);
206 extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
207 u16 netfid, FILE_ALL_INFO *pFindData);
208 extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
209 const unsigned char *searchName,
210 FILE_ALL_INFO *findData,
211 int legacy /* whether to use old info level */,
212 const struct nls_table *nls_codepage, int remap);
213 extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
214 const unsigned char *searchName,
215 FILE_ALL_INFO *findData,
216 const struct nls_table *nls_codepage, int remap);
218 extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
219 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
220 extern int CIFSSMBUnixQPathInfo(const unsigned int xid,
221 struct cifs_tcon *tcon,
222 const unsigned char *searchName,
223 FILE_UNIX_BASIC_INFO *pFindData,
224 const struct nls_table *nls_codepage, int remap);
226 extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
227 const unsigned char *searchName,
228 struct dfs_info3_param **target_nodes,
229 unsigned int *number_of_nodes_in_array,
230 const struct nls_table *nls_codepage, int remap);
232 extern int get_dfs_path(unsigned int xid, struct cifs_ses *pSesInfo,
233 const char *old_path,
234 const struct nls_table *nls_codepage,
235 unsigned int *pnum_referrals,
236 struct dfs_info3_param **preferrals,
238 extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
239 struct cifs_sb_info *cifs_sb,
240 struct smb_vol *vol);
241 extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
242 struct kstatfs *FSData);
243 extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
244 struct kstatfs *FSData);
245 extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon,
248 extern int CIFSSMBQFSAttributeInfo(const unsigned int xid,
249 struct cifs_tcon *tcon);
250 extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon);
251 extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon);
252 extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
253 struct kstatfs *FSData);
255 extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
256 const char *fileName, const FILE_BASIC_INFO *data,
257 const struct nls_table *nls_codepage,
258 int remap_special_chars);
259 extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
260 const FILE_BASIC_INFO *data, __u16 fid,
261 __u32 pid_of_opener);
262 extern int CIFSSMBSetFileDisposition(const unsigned int xid,
263 struct cifs_tcon *tcon,
264 bool delete_file, __u16 fid,
265 __u32 pid_of_opener);
267 extern int CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon,
268 char *fileName, __u16 dos_attributes,
269 const struct nls_table *nls_codepage);
270 #endif /* possibly unneeded function */
271 extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
272 const char *fileName, __u64 size,
273 bool setAllocationSizeFlag,
274 const struct nls_table *nls_codepage,
275 int remap_special_chars);
276 extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
277 __u64 size, __u16 fileHandle, __u32 opener_pid,
280 struct cifs_unix_set_info_args {
290 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
291 struct cifs_tcon *tcon,
292 const struct cifs_unix_set_info_args *args,
293 u16 fid, u32 pid_of_opener);
295 extern int CIFSSMBUnixSetPathInfo(const unsigned int xid,
296 struct cifs_tcon *tcon, char *file_name,
297 const struct cifs_unix_set_info_args *args,
298 const struct nls_table *nls_codepage,
299 int remap_special_chars);
301 extern int CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon,
303 const struct nls_table *nls_codepage,
304 int remap_special_chars);
305 extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon,
306 const char *name, const struct nls_table *nls_codepage,
307 int remap_special_chars);
308 extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
309 const char *name, __u16 type,
310 const struct nls_table *nls_codepage,
311 int remap_special_chars);
312 extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
314 const struct nls_table *nls_codepage,
315 int remap_special_chars);
316 extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
317 const char *fromName, const char *toName,
318 const struct nls_table *nls_codepage,
319 int remap_special_chars);
320 extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
321 int netfid, const char *target_name,
322 const struct nls_table *nls_codepage,
323 int remap_special_chars);
324 extern int CIFSCreateHardLink(const unsigned int xid,
325 struct cifs_tcon *tcon,
326 const char *fromName, const char *toName,
327 const struct nls_table *nls_codepage,
328 int remap_special_chars);
329 extern int CIFSUnixCreateHardLink(const unsigned int xid,
330 struct cifs_tcon *tcon,
331 const char *fromName, const char *toName,
332 const struct nls_table *nls_codepage,
333 int remap_special_chars);
334 extern int CIFSUnixCreateSymLink(const unsigned int xid,
335 struct cifs_tcon *tcon,
336 const char *fromName, const char *toName,
337 const struct nls_table *nls_codepage);
338 extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
339 struct cifs_tcon *tcon,
340 const unsigned char *searchName, char **syminfo,
341 const struct nls_table *nls_codepage);
342 #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
343 extern int CIFSSMBQueryReparseLinkInfo(const unsigned int xid,
344 struct cifs_tcon *tcon,
345 const unsigned char *searchName,
346 char *symlinkinfo, const int buflen, __u16 fid,
347 const struct nls_table *nls_codepage);
348 #endif /* temporarily unused until cifs_symlink fixed */
349 extern int CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
350 const char *fileName, const int disposition,
351 const int access_flags, const int omode,
352 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
353 const struct nls_table *nls_codepage, int remap);
354 extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
355 const char *fileName, const int disposition,
356 const int access_flags, const int omode,
357 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
358 const struct nls_table *nls_codepage, int remap);
359 extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
360 u32 posix_flags, __u64 mode, __u16 *netfid,
361 FILE_UNIX_BASIC_INFO *pRetData,
362 __u32 *pOplock, const char *name,
363 const struct nls_table *nls_codepage, int remap);
364 extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon,
365 const int smb_file_id);
367 extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon,
368 const int smb_file_id);
370 extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
371 unsigned int *nbytes, char **buf,
372 int *return_buf_type);
373 extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
374 unsigned int *nbytes, const char *buf,
375 const char __user *ubuf, const int long_op);
376 extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
377 unsigned int *nbytes, struct kvec *iov, const int nvec,
379 extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
380 const unsigned char *searchName, __u64 *inode_number,
381 const struct nls_table *nls_codepage,
382 int remap_special_chars);
384 extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
385 const __u16 netfid, const __u8 lock_type,
386 const __u32 num_unlock, const __u32 num_lock,
387 LOCKING_ANDX_RANGE *buf);
388 extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
389 const __u16 netfid, const __u32 netpid, const __u64 len,
390 const __u64 offset, const __u32 numUnlock,
391 const __u32 numLock, const __u8 lockType,
392 const bool waitFlag, const __u8 oplock_level);
393 extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
394 const __u16 smb_file_id, const __u32 netpid,
395 const loff_t start_offset, const __u64 len,
396 struct file_lock *, const __u16 lock_type,
397 const bool waitFlag);
398 extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon);
399 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
400 extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
402 extern struct cifs_ses *sesInfoAlloc(void);
403 extern void sesInfoFree(struct cifs_ses *);
404 extern struct cifs_tcon *tconInfoAlloc(void);
405 extern void tconInfoFree(struct cifs_tcon *);
407 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
408 extern int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
410 extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
411 struct TCP_Server_Info *server,
412 __u32 expected_sequence_number);
413 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
414 const struct nls_table *);
415 extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
416 extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
417 extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
418 extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
419 extern int calc_seckey(struct cifs_ses *);
421 #ifdef CONFIG_CIFS_WEAK_PW_HASH
422 extern int calc_lanman_hash(const char *password, const char *cryptkey,
423 bool encrypt, char *lnm_session_key);
424 #endif /* CIFS_WEAK_PW_HASH */
425 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
426 extern int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
427 const int notify_subdirs, const __u16 netfid,
428 __u32 filter, struct file *file, int multishot,
429 const struct nls_table *nls_codepage);
430 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
431 extern int CIFSSMBCopy(unsigned int xid,
432 struct cifs_tcon *source_tcon,
433 const char *fromName,
434 const __u16 target_tid,
435 const char *toName, const int flags,
436 const struct nls_table *nls_codepage,
437 int remap_special_chars);
438 extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
439 const unsigned char *searchName,
440 const unsigned char *ea_name, char *EAData,
441 size_t bufsize, const struct nls_table *nls_codepage,
442 int remap_special_chars);
443 extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
444 const char *fileName, const char *ea_name,
445 const void *ea_value, const __u16 ea_value_len,
446 const struct nls_table *nls_codepage, int remap_special_chars);
447 extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon,
448 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
449 extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16,
450 struct cifs_ntsd *, __u32, int);
451 extern int CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
452 const unsigned char *searchName,
453 char *acl_inf, const int buflen, const int acl_type,
454 const struct nls_table *nls_codepage, int remap_special_chars);
455 extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
456 const unsigned char *fileName,
457 const char *local_acl, const int buflen, const int acl_type,
458 const struct nls_table *nls_codepage, int remap_special_chars);
459 extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
460 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
461 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
462 extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
463 extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
464 const unsigned char *path,
465 struct cifs_sb_info *cifs_sb, unsigned int xid);
466 extern int mdfour(unsigned char *, unsigned char *, int);
467 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
468 const struct nls_table *codepage);
469 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
472 /* asynchronous read support */
473 struct cifs_readdata {
474 struct kref refcount;
475 struct list_head list;
476 struct completion done;
477 struct cifsFileInfo *cfile;
478 struct address_space *mapping;
483 struct list_head pages;
484 struct work_struct work;
485 int (*marshal_iov) (struct cifs_readdata *rdata,
486 unsigned int remaining);
491 void cifs_readdata_release(struct kref *refcount);
492 int cifs_async_readv(struct cifs_readdata *rdata);
494 /* asynchronous write support */
495 struct cifs_writedata {
496 struct kref refcount;
497 struct list_head list;
498 struct completion done;
499 enum writeback_sync_modes sync_mode;
500 struct work_struct work;
501 struct cifsFileInfo *cfile;
506 void (*marshal_iov) (struct kvec *iov,
507 struct cifs_writedata *wdata);
508 unsigned int nr_pages;
509 struct page *pages[1];
512 int cifs_async_writev(struct cifs_writedata *wdata);
513 void cifs_writev_complete(struct work_struct *work);
514 struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
515 work_func_t complete);
516 void cifs_writedata_release(struct kref *refcount);
518 #endif /* _CIFSPROTO_H */