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[CIFS] Avoid extra large buffer allocation (and memcpy) in cifs_readpages
[mirror_ubuntu-artful-kernel.git] / fs / cifs / cifsproto.h
CommitLineData
1da177e4
LT		 1/*
2 * fs/cifs/cifsproto.h
3 *
4 * Copyright (c) International Business Machines Corp., 2002,2005
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;
26
27/*
28 *****************************************************************
29 * All Prototypes
30 *****************************************************************
31 */
32
33extern struct smb_hdr *cifs_buf_get(void);
34extern void cifs_buf_release(void *);
35extern struct smb_hdr *cifs_small_buf_get(void);
36extern void cifs_small_buf_release(void *);
37extern int smb_send(struct socket *, struct smb_hdr *,
38 unsigned int /* length */ , struct sockaddr *);
39extern unsigned int _GetXid(void);
40extern void _FreeXid(unsigned int);
41#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__FUNCTION__, xid,current->fsuid));
42#define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__FUNCTION__,curr_xid,(int)rc));}
7f57356b 43extern char *build_path_from_dentry(struct dentry *);
1da177e4
LT		 44extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
45extern void renew_parental_timestamps(struct dentry *direntry);
46extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
47 struct smb_hdr * /* input */ ,
48 struct smb_hdr * /* out */ ,
49 int * /* bytes returned */ , const int long_op);
d6e04ae6 50extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
84afc29b 51 struct kvec *, int /* nvec to send */,
ec637e3f 52 int * /* type of buf returned */ , const int long_op);
1da177e4
LT		 53extern int checkSMBhdr(struct smb_hdr *smb, __u16 mid);
54extern int checkSMB(struct smb_hdr *smb, __u16 mid, int length);
55extern int is_valid_oplock_break(struct smb_hdr *smb);
56extern int is_size_safe_to_change(struct cifsInodeInfo *);
6148a742 57extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *);
1da177e4 58extern unsigned int smbCalcSize(struct smb_hdr *ptr);
70ca734a 59extern unsigned int smbCalcSize_LE(struct smb_hdr *ptr);
1da177e4
LT		 60extern int decode_negTokenInit(unsigned char *security_blob, int length,
61 enum securityEnum *secType);
62extern int cifs_inet_pton(int, char * source, void *dst);
63extern int map_smb_to_linux_error(struct smb_hdr *smb);
64extern void header_assemble(struct smb_hdr *, char /* command */ ,
1982c344
SF		 65 const struct cifsTconInfo *, int /* length of
66 fixed section (word count) in two byte units */);
67extern __u16 GetNextMid(struct TCP_Server_Info *server);
737b758c
SF		 68extern struct oplock_q_entry * AllocOplockQEntry(struct inode *, u16,
69 struct cifsTconInfo *);
1da177e4
LT		 70extern void DeleteOplockQEntry(struct oplock_q_entry *);
71extern struct timespec cifs_NTtimeToUnix(u64 /* utc nanoseconds since 1601 */ );
72extern u64 cifs_UnixTimeToNT(struct timespec);
73extern int cifs_get_inode_info(struct inode **pinode,
74 const unsigned char *search_path,
75 FILE_ALL_INFO * pfile_info,
76 struct super_block *sb, int xid);
77extern int cifs_get_inode_info_unix(struct inode **pinode,
78 const unsigned char *search_path,
79 struct super_block *sb,int xid);
80
81extern int cifs_mount(struct super_block *, struct cifs_sb_info *, char *,
82 const char *);
83extern int cifs_umount(struct super_block *, struct cifs_sb_info *);
84void cifs_proc_init(void);
85void cifs_proc_clean(void);
86
87extern int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
88 struct nls_table * nls_info);
89extern int CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses);
90
91extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
92 const char *tree, struct cifsTconInfo *tcon,
93 const struct nls_table *);
94
95extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
ec637e3f
SF		 96 const char *searchName, const struct nls_table *nls_codepage,
97 __u16 *searchHandle, struct cifs_search_info * psrch_inf,
98 int map, const char dirsep);
1da177e4
LT		 99
100extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
ec637e3f 101 __u16 searchHandle, struct cifs_search_info * psrch_inf);
1da177e4
LT		 102
103extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
104 const __u16 search_handle);
105
106extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
107 const unsigned char *searchName,
108 FILE_ALL_INFO * findData,
737b758c 109 const struct nls_table *nls_codepage, int remap);
6b8edfe0
SF		 110extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
111 const unsigned char *searchName,
112 FILE_ALL_INFO * findData,
113 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 114
115extern int CIFSSMBUnixQPathInfo(const int xid,
116 struct cifsTconInfo *tcon,
117 const unsigned char *searchName,
118 FILE_UNIX_BASIC_INFO * pFindData,
737b758c 119 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 120
121extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
122 const unsigned char *searchName,
123 unsigned char **targetUNCs,
124 unsigned int *number_of_UNC_in_array,
737b758c 125 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 126
127extern int connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
128 const char *old_path,
737b758c 129 const struct nls_table *nls_codepage, int remap);
1da177e4 130extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
737b758c
SF		 131 const char *old_path,
132 const struct nls_table *nls_codepage,
133 unsigned int *pnum_referrals,
134 unsigned char ** preferrals,
135 int remap);
1da177e4 136extern int CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,
737b758c 137 struct kstatfs *FSData);
20962438
SF		 138extern int SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon,
139 struct kstatfs *FSData);
45abc6ee 140extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon,
ac67055e
JA		 141 __u64 cap);
142
1da177e4 143extern int CIFSSMBQFSAttributeInfo(const int xid,
737b758c
SF		 144 struct cifsTconInfo *tcon);
145extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon);
146extern int CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon);
1da177e4 147extern int CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
737b758c 148 struct kstatfs *FSData);
1da177e4
LT		 149
150extern int CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon,
151 const char *fileName, const FILE_BASIC_INFO * data,
737b758c
SF		 152 const struct nls_table *nls_codepage,
153 int remap_special_chars);
1da177e4
LT		 154extern int CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon,
155 const FILE_BASIC_INFO * data, __u16 fid);
156#if 0
157extern int CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon,
158 char *fileName, __u16 dos_attributes,
159 const struct nls_table *nls_codepage);
160#endif /* possibly unneeded function */
161extern int CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon,
737b758c
SF		 162 const char *fileName, __u64 size,
163 int setAllocationSizeFlag,
164 const struct nls_table *nls_codepage,
165 int remap_special_chars);
1da177e4 166extern int CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon,
737b758c
SF		 167 __u64 size, __u16 fileHandle,__u32 opener_pid,
168 int AllocSizeFlag);
1da177e4
LT		 169extern int CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *pTcon,
170 char *full_path, __u64 mode, __u64 uid,
737b758c
SF		 171 __u64 gid, dev_t dev,
172 const struct nls_table *nls_codepage,
173 int remap_special_chars);
1da177e4
LT		 174
175extern int CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
176 const char *newName,
737b758c
SF		 177 const struct nls_table *nls_codepage,
178 int remap_special_chars);
1da177e4 179extern int CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon,
737b758c
SF		 180 const char *name, const struct nls_table *nls_codepage,
181 int remap_special_chars);
1da177e4
LT		 182
183extern int CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon,
184 const char *name,
737b758c
SF		 185 const struct nls_table *nls_codepage,
186 int remap_special_chars);
1da177e4
LT		 187extern int CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
188 const char *fromName, const char *toName,
737b758c
SF		 189 const struct nls_table *nls_codepage,
190 int remap_special_chars);
1da177e4 191extern int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon,
737b758c
SF		 192 int netfid, char * target_name,
193 const struct nls_table *nls_codepage,
194 int remap_special_chars);
1da177e4
LT		 195extern int CIFSCreateHardLink(const int xid,
196 struct cifsTconInfo *tcon,
197 const char *fromName, const char *toName,
737b758c
SF		 198 const struct nls_table *nls_codepage,
199 int remap_special_chars);
1da177e4
LT		 200extern int CIFSUnixCreateHardLink(const int xid,
201 struct cifsTconInfo *tcon,
202 const char *fromName, const char *toName,
737b758c
SF		 203 const struct nls_table *nls_codepage,
204 int remap_special_chars);
1da177e4
LT		 205extern int CIFSUnixCreateSymLink(const int xid,
206 struct cifsTconInfo *tcon,
207 const char *fromName, const char *toName,
208 const struct nls_table *nls_codepage);
209extern int CIFSSMBUnixQuerySymLink(const int xid,
210 struct cifsTconInfo *tcon,
211 const unsigned char *searchName,
212 char *syminfo, const int buflen,
213 const struct nls_table *nls_codepage);
214extern int CIFSSMBQueryReparseLinkInfo(const int xid,
215 struct cifsTconInfo *tcon,
216 const unsigned char *searchName,
217 char *symlinkinfo, const int buflen, __u16 fid,
218 const struct nls_table *nls_codepage);
219
220extern int CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
221 const char *fileName, const int disposition,
222 const int access_flags, const int omode,
223 __u16 * netfid, int *pOplock, FILE_ALL_INFO *,
737b758c 224 const struct nls_table *nls_codepage, int remap);
a9d02ad4
SF		 225extern int SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
226 const char *fileName, const int disposition,
227 const int access_flags, const int omode,
228 __u16 * netfid, int *pOplock, FILE_ALL_INFO *,
229 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 230extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon,
231 const int smb_file_id);
232
233extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
ec637e3f
SF		 234 const int netfid, unsigned int count,
235 const __u64 lseek, unsigned int *nbytes, char **buf,
236 int * return_buf_type);
1da177e4
LT		 237extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
238 const int netfid, const unsigned int count,
239 const __u64 lseek, unsigned int *nbytes,
240 const char *buf, const char __user *ubuf,
241 const int long_op);
1da177e4
LT		 242extern int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
243 const int netfid, const unsigned int count,
244 const __u64 offset, unsigned int *nbytes,
3e84469d 245 struct kvec *iov, const int nvec, const int long_op);
1da177e4
LT		 246extern int CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
247 const unsigned char *searchName, __u64 * inode_number,
737b758c
SF		 248 const struct nls_table *nls_codepage,
249 int remap_special_chars);
b1a45695 250extern int cifs_convertUCSpath(char *target, const __le16 *source, int maxlen,
6a0b4824 251 const struct nls_table * codepage);
737b758c
SF		 252extern int cifsConvertToUCS(__le16 * target, const char *source, int maxlen,
253 const struct nls_table * cp, int mapChars);
1da177e4
LT		 254
255extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
256 const __u16 netfid, const __u64 len,
257 const __u64 offset, const __u32 numUnlock,
258 const __u32 numLock, const __u8 lockType,
259 const int waitFlag);
260
261extern int CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon);
262extern int CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses);
263
264extern struct cifsSesInfo *sesInfoAlloc(void);
265extern void sesInfoFree(struct cifsSesInfo *);
266extern struct cifsTconInfo *tconInfoAlloc(void);
267extern void tconInfoFree(struct cifsTconInfo *);
268
269extern int cifs_reconnect(struct TCP_Server_Info *server);
270
ad009ac9 271extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *,__u32 *);
84afc29b
SF		 272extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
273 __u32 *);
1da177e4
LT		 274extern int cifs_verify_signature(struct smb_hdr *, const char * mac_key,
275 __u32 expected_sequence_number);
276extern int cifs_calculate_mac_key(char * key,const char * rn,const char * pass);
277extern int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *, struct nls_table *);
278extern void CalcNTLMv2_response(const struct cifsSesInfo *,char * );
279extern int CIFSSMBCopy(int xid,
280 struct cifsTconInfo *source_tcon,
281 const char *fromName,
282 const __u16 target_tid,
283 const char *toName, const int flags,
737b758c
SF		 284 const struct nls_table *nls_codepage,
285 int remap_special_chars);
1da177e4 286extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
737b758c 287 const int notify_subdirs,const __u16 netfid,
167a251a
SF		 288 __u32 filter, struct file * file, int multishot,
289 const struct nls_table *nls_codepage);
1da177e4
LT		 290extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
291 const unsigned char *searchName, char * EAData,
737b758c
SF		 292 size_t bufsize, const struct nls_table *nls_codepage,
293 int remap_special_chars);
1da177e4
LT		 294extern ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon,
295 const unsigned char * searchName,const unsigned char * ea_name,
296 unsigned char * ea_value, size_t buf_size,
737b758c 297 const struct nls_table *nls_codepage, int remap_special_chars);
1da177e4
LT		 298extern int CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon,
299 const char *fileName, const char * ea_name,
300 const void * ea_value, const __u16 ea_value_len,
737b758c 301 const struct nls_table *nls_codepage, int remap_special_chars);
1da177e4
LT		 302extern int CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
303 const unsigned char *searchName,
304 char *acl_inf, const int buflen,const int acl_type,
737b758c 305 const struct nls_table *nls_codepage, int remap_special_chars);
1da177e4
LT		 306extern int CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
307 const unsigned char *fileName,
308 const char *local_acl, const int buflen, const int acl_type,
737b758c 309 const struct nls_table *nls_codepage, int remap_special_chars);
f654bac2
SF		 310extern int CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
311 const int netfid, __u64 * pExtAttrBits, __u64 *pMask);
1da177e4 312#endif /* _CIFSPROTO_H */
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