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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
25struct statfs;
26struct smb_vol;
27
28/*
29 *****************************************************************
30 * All Prototypes
31 *****************************************************************
32 */
33
34extern struct smb_hdr *cifs_buf_get(void);
35extern void cifs_buf_release(void *);
36extern struct smb_hdr *cifs_small_buf_get(void);
37extern void cifs_small_buf_release(void *);
38extern int smb_send(struct TCP_Server_Info *, struct smb_hdr *,
39 unsigned int /* length */);
40extern unsigned int _GetXid(void);
41extern void _FreeXid(unsigned int);
42#define GetXid() \
43({ \
44 int __xid = (int)_GetXid(); \
45 cFYI(1, "CIFS VFS: in %s as Xid: %d with uid: %d", \
46 __func__, __xid, current_fsuid()); \
47 __xid; \
48})
49
50#define FreeXid(curr_xid) \
51do { \
52 _FreeXid(curr_xid); \
53 cFYI(1, "CIFS VFS: leaving %s (xid = %d) rc = %d", \
54 __func__, curr_xid, (int)rc); \
55} while (0)
56extern int init_cifs_idmap(void);
57extern void exit_cifs_idmap(void);
58extern void cifs_destroy_idmaptrees(void);
59extern char *build_path_from_dentry(struct dentry *);
60extern char *cifs_build_path_to_root(struct smb_vol *vol,
61 struct cifs_sb_info *cifs_sb,
62 struct cifs_tcon *tcon);
63extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
64extern char *cifs_compose_mount_options(const char *sb_mountdata,
65 const char *fullpath, const struct dfs_info3_param *ref,
66 char **devname);
67/* extern void renew_parental_timestamps(struct dentry *direntry);*/
68extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
69 struct TCP_Server_Info *server);
70extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
71extern 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,
74 bool ignore_pend);
75extern 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 long_op);
79extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
80 char *in_buf, int flags);
81extern int cifs_setup_request(struct cifs_ses *, struct kvec *, unsigned int,
82 struct mid_q_entry **);
83extern int cifs_check_receive(struct mid_q_entry *mid,
84 struct TCP_Server_Info *server, bool log_error);
85extern 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);
88extern int SendReceiveBlockingLock(const unsigned int xid,
89 struct cifs_tcon *ptcon,
90 struct smb_hdr *in_buf ,
91 struct smb_hdr *out_buf,
92 int *bytes_returned);
93extern int checkSMB(char *buf, unsigned int length);
94extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
95extern bool backup_cred(struct cifs_sb_info *);
96extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
97extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
98 unsigned int bytes_written);
99extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
100extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
101extern unsigned int smbCalcSize(struct smb_hdr *ptr);
102extern int decode_negTokenInit(unsigned char *security_blob, int length,
103 struct TCP_Server_Info *server);
104extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
105extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
106extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
107 const unsigned short int port);
108extern int map_smb_to_linux_error(char *buf, bool logErr);
109extern 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 */);
112extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
113 struct cifs_ses *ses,
114 void **request_buf);
115extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
116 const struct nls_table *nls_cp);
117extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
118extern u64 cifs_UnixTimeToNT(struct timespec);
119extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
120 int offset);
121extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
122
123extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
124 struct file *file, struct tcon_link *tlink,
125 __u32 oplock);
126extern int cifs_posix_open(char *full_path, struct inode **pinode,
127 struct super_block *sb,
128 int mode, unsigned int f_flags,
129 __u32 *poplock, __u16 *pnetfid, int xid);
130void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr);
131extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
132 FILE_UNIX_BASIC_INFO *info,
133 struct cifs_sb_info *cifs_sb);
134extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
135extern struct inode *cifs_iget(struct super_block *sb,
136 struct cifs_fattr *fattr);
137
138extern int cifs_get_file_info(struct file *filp);
139extern 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, int xid, const __u16 *pfid);
143extern int cifs_get_file_info_unix(struct file *filp);
144extern int cifs_get_inode_info_unix(struct inode **pinode,
145 const unsigned char *search_path,
146 struct super_block *sb, int xid);
147extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
148 struct cifs_fattr *fattr, struct inode *inode,
149 const char *path, const __u16 *pfid);
150extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
151 uid_t, gid_t);
152extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
153 const char *, u32 *);
154extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
155 const char *, int);
156
157extern void dequeue_mid(struct mid_q_entry *mid, bool malformed);
158extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
159 unsigned int to_read);
160extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
161 struct kvec *iov_orig, unsigned int nr_segs,
162 unsigned int to_read);
163extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
164 struct cifs_sb_info *cifs_sb);
165extern int cifs_match_super(struct super_block *, void *);
166extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
167extern struct smb_vol *cifs_get_volume_info(char *mount_data,
168 const char *devname);
169extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *);
170extern void cifs_umount(struct cifs_sb_info *);
171
172#if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
173extern void cifs_dfs_release_automount_timer(void);
174#else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
175#define cifs_dfs_release_automount_timer() do { } while (0)
176#endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */
177
178void cifs_proc_init(void);
179void cifs_proc_clean(void);
180
181extern int cifs_negotiate_protocol(unsigned int xid,
182 struct cifs_ses *ses);
183extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
184 struct nls_table *nls_info);
185extern int CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses);
186
187extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses,
188 const char *tree, struct cifs_tcon *tcon,
189 const struct nls_table *);
190
191extern int CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
192 const char *searchName, const struct nls_table *nls_codepage,
193 __u16 *searchHandle, __u16 search_flags,
194 struct cifs_search_info *psrch_inf,
195 int map, const char dirsep);
196
197extern int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
198 __u16 searchHandle, __u16 search_flags,
199 struct cifs_search_info *psrch_inf);
200
201extern int CIFSFindClose(const int, struct cifs_tcon *tcon,
202 const __u16 search_handle);
203
204extern int CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,
205 u16 netfid, FILE_ALL_INFO *pFindData);
206extern int CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,
207 const unsigned char *searchName,
208 FILE_ALL_INFO *findData,
209 int legacy /* whether to use old info level */,
210 const struct nls_table *nls_codepage, int remap);
211extern int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,
212 const unsigned char *searchName,
213 FILE_ALL_INFO *findData,
214 const struct nls_table *nls_codepage, int remap);
215
216extern int CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,
217 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
218extern int CIFSSMBUnixQPathInfo(const int xid,
219 struct cifs_tcon *tcon,
220 const unsigned char *searchName,
221 FILE_UNIX_BASIC_INFO *pFindData,
222 const struct nls_table *nls_codepage, int remap);
223
224extern int CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,
225 const unsigned char *searchName,
226 struct dfs_info3_param **target_nodes,
227 unsigned int *number_of_nodes_in_array,
228 const struct nls_table *nls_codepage, int remap);
229
230extern int get_dfs_path(int xid, struct cifs_ses *pSesInfo,
231 const char *old_path,
232 const struct nls_table *nls_codepage,
233 unsigned int *pnum_referrals,
234 struct dfs_info3_param **preferrals,
235 int remap);
236extern void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
237 struct cifs_sb_info *cifs_sb,
238 struct smb_vol *vol);
239extern int CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon,
240 struct kstatfs *FSData);
241extern int SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon,
242 struct kstatfs *FSData);
243extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon,
244 __u64 cap);
245
246extern int CIFSSMBQFSAttributeInfo(const int xid,
247 struct cifs_tcon *tcon);
248extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon);
249extern int CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon);
250extern int CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,
251 struct kstatfs *FSData);
252
253extern int CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,
254 const char *fileName, const FILE_BASIC_INFO *data,
255 const struct nls_table *nls_codepage,
256 int remap_special_chars);
257extern int CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,
258 const FILE_BASIC_INFO *data, __u16 fid,
259 __u32 pid_of_opener);
260extern int CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,
261 bool delete_file, __u16 fid, __u32 pid_of_opener);
262#if 0
263extern int CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon,
264 char *fileName, __u16 dos_attributes,
265 const struct nls_table *nls_codepage);
266#endif /* possibly unneeded function */
267extern int CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon,
268 const char *fileName, __u64 size,
269 bool setAllocationSizeFlag,
270 const struct nls_table *nls_codepage,
271 int remap_special_chars);
272extern int CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon,
273 __u64 size, __u16 fileHandle, __u32 opener_pid,
274 bool AllocSizeFlag);
275
276struct cifs_unix_set_info_args {
277 __u64 ctime;
278 __u64 atime;
279 __u64 mtime;
280 __u64 mode;
281 __u64 uid;
282 __u64 gid;
283 dev_t device;
284};
285
286extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,
287 const struct cifs_unix_set_info_args *args,
288 u16 fid, u32 pid_of_opener);
289
290extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *pTcon,
291 char *fileName,
292 const struct cifs_unix_set_info_args *args,
293 const struct nls_table *nls_codepage,
294 int remap_special_chars);
295
296extern int CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,
297 const char *newName,
298 const struct nls_table *nls_codepage,
299 int remap_special_chars);
300extern int CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon,
301 const char *name, const struct nls_table *nls_codepage,
302 int remap_special_chars);
303extern int CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon,
304 const char *name, __u16 type,
305 const struct nls_table *nls_codepage,
306 int remap_special_chars);
307extern int CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon,
308 const char *name,
309 const struct nls_table *nls_codepage,
310 int remap_special_chars);
311extern int CIFSSMBRename(const int xid, struct cifs_tcon *tcon,
312 const char *fromName, const char *toName,
313 const struct nls_table *nls_codepage,
314 int remap_special_chars);
315extern int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,
316 int netfid, const char *target_name,
317 const struct nls_table *nls_codepage,
318 int remap_special_chars);
319extern int CIFSCreateHardLink(const int xid,
320 struct cifs_tcon *tcon,
321 const char *fromName, const char *toName,
322 const struct nls_table *nls_codepage,
323 int remap_special_chars);
324extern int CIFSUnixCreateHardLink(const 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);
329extern int CIFSUnixCreateSymLink(const int xid,
330 struct cifs_tcon *tcon,
331 const char *fromName, const char *toName,
332 const struct nls_table *nls_codepage);
333extern int CIFSSMBUnixQuerySymLink(const int xid,
334 struct cifs_tcon *tcon,
335 const unsigned char *searchName, char **syminfo,
336 const struct nls_table *nls_codepage);
337#ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
338extern int CIFSSMBQueryReparseLinkInfo(const int xid,
339 struct cifs_tcon *tcon,
340 const unsigned char *searchName,
341 char *symlinkinfo, const int buflen, __u16 fid,
342 const struct nls_table *nls_codepage);
343#endif /* temporarily unused until cifs_symlink fixed */
344extern int CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,
345 const char *fileName, const int disposition,
346 const int access_flags, const int omode,
347 __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
348 const struct nls_table *nls_codepage, int remap);
349extern int SMBLegacyOpen(const 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);
354extern int CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon,
355 u32 posix_flags, __u64 mode, __u16 *netfid,
356 FILE_UNIX_BASIC_INFO *pRetData,
357 __u32 *pOplock, const char *name,
358 const struct nls_table *nls_codepage, int remap);
359extern int CIFSSMBClose(const int xid, struct cifs_tcon *tcon,
360 const int smb_file_id);
361
362extern int CIFSSMBFlush(const int xid, struct cifs_tcon *tcon,
363 const int smb_file_id);
364
365extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms,
366 unsigned int *nbytes, char **buf,
367 int *return_buf_type);
368extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
369 unsigned int *nbytes, const char *buf,
370 const char __user *ubuf, const int long_op);
371extern int CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
372 unsigned int *nbytes, struct kvec *iov, const int nvec,
373 const int long_op);
374extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
375 const unsigned char *searchName, __u64 *inode_number,
376 const struct nls_table *nls_codepage,
377 int remap_special_chars);
378
379extern int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid,
380 const __u8 lock_type, const __u32 num_unlock,
381 const __u32 num_lock, LOCKING_ANDX_RANGE *buf);
382extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
383 const __u16 netfid, const __u32 netpid, const __u64 len,
384 const __u64 offset, const __u32 numUnlock,
385 const __u32 numLock, const __u8 lockType,
386 const bool waitFlag, const __u8 oplock_level);
387extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
388 const __u16 smb_file_id, const __u32 netpid,
389 const int get_flag, const __u64 len, struct file_lock *,
390 const __u16 lock_type, const bool waitFlag);
391extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);
392extern int CIFSSMBEcho(struct TCP_Server_Info *server);
393extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses);
394
395extern struct cifs_ses *sesInfoAlloc(void);
396extern void sesInfoFree(struct cifs_ses *);
397extern struct cifs_tcon *tconInfoAlloc(void);
398extern void tconInfoFree(struct cifs_tcon *);
399
400extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
401extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
402 __u32 *);
403extern int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
404 struct TCP_Server_Info *server,
405 __u32 expected_sequence_number);
406extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *,
407 const struct nls_table *);
408extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *);
409extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
410extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
411extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
412extern int calc_seckey(struct cifs_ses *);
413
414#ifdef CONFIG_CIFS_WEAK_PW_HASH
415extern int calc_lanman_hash(const char *password, const char *cryptkey,
416 bool encrypt, char *lnm_session_key);
417#endif /* CIFS_WEAK_PW_HASH */
418#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
419extern int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon,
420 const int notify_subdirs, const __u16 netfid,
421 __u32 filter, struct file *file, int multishot,
422 const struct nls_table *nls_codepage);
423#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
424extern int CIFSSMBCopy(int xid,
425 struct cifs_tcon *source_tcon,
426 const char *fromName,
427 const __u16 target_tid,
428 const char *toName, const int flags,
429 const struct nls_table *nls_codepage,
430 int remap_special_chars);
431extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,
432 const unsigned char *searchName,
433 const unsigned char *ea_name, char *EAData,
434 size_t bufsize, const struct nls_table *nls_codepage,
435 int remap_special_chars);
436extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon,
437 const char *fileName, const char *ea_name,
438 const void *ea_value, const __u16 ea_value_len,
439 const struct nls_table *nls_codepage, int remap_special_chars);
440extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon,
441 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
442extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16,
443 struct cifs_ntsd *, __u32, int);
444extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
445 const unsigned char *searchName,
446 char *acl_inf, const int buflen, const int acl_type,
447 const struct nls_table *nls_codepage, int remap_special_chars);
448extern int CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,
449 const unsigned char *fileName,
450 const char *local_acl, const int buflen, const int acl_type,
451 const struct nls_table *nls_codepage, int remap_special_chars);
452extern int CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,
453 const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
454extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
455extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
456extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
457 const unsigned char *path,
458 struct cifs_sb_info *cifs_sb, int xid);
459extern int mdfour(unsigned char *, unsigned char *, int);
460extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
461 const struct nls_table *codepage);
462extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
463 unsigned char *p24);
464
465/* asynchronous read support */
466struct cifs_readdata {
467 struct kref refcount;
468 struct list_head list;
469 struct completion done;
470 struct cifsFileInfo *cfile;
471 struct address_space *mapping;
472 __u64 offset;
473 unsigned int bytes;
474 pid_t pid;
475 int result;
476 struct list_head pages;
477 struct work_struct work;
478 int (*marshal_iov) (struct cifs_readdata *rdata,
479 unsigned int remaining);
480 unsigned int nr_iov;
481 struct kvec iov[1];
482};
483
484void cifs_readdata_release(struct kref *refcount);
485int cifs_async_readv(struct cifs_readdata *rdata);
486
487/* asynchronous write support */
488struct cifs_writedata {
489 struct kref refcount;
490 struct list_head list;
491 struct completion done;
492 enum writeback_sync_modes sync_mode;
493 struct work_struct work;
494 struct cifsFileInfo *cfile;
495 __u64 offset;
496 pid_t pid;
497 unsigned int bytes;
498 int result;
499 void (*marshal_iov) (struct kvec *iov,
500 struct cifs_writedata *wdata);
501 unsigned int nr_pages;
502 struct page *pages[1];
503};
504
505int cifs_async_writev(struct cifs_writedata *wdata);
506void cifs_writev_complete(struct work_struct *work);
507struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
508 work_func_t complete);
509void cifs_writedata_release(struct kref *refcount);
510
511#endif /* _CIFSPROTO_H */