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[CIFS] Fix buffer overflow if server sends corrupt response to small
[mirror_ubuntu-artful-kernel.git] / fs / cifs / cifsproto.h
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1da177e4
LT		 1/*
2 * fs/cifs/cifsproto.h
3 *
2dd29d31 4 * Copyright (c) International Business Machines Corp., 2002,2007
1da177e4
LT		 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
d38d8c74 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1da177e4
LT		 20 */
21#ifndef _CIFSPROTO_H
22#define _CIFSPROTO_H
23#include <linux/nls.h>
24
25struct statfs;
8af18971 26struct smb_vol;
1da177e4
LT		 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 socket *, struct smb_hdr *,
39 unsigned int /* length */ , struct sockaddr *);
40extern unsigned int _GetXid(void);
41extern void _FreeXid(unsigned int);
42#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__FUNCTION__, xid,current->fsuid));
43#define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__FUNCTION__,curr_xid,(int)rc));}
7f57356b 44extern char *build_path_from_dentry(struct dentry *);
1da177e4 45extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
99ee4dbd 46/* extern void renew_parental_timestamps(struct dentry *direntry);*/
1da177e4
LT		 47extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
48 struct smb_hdr * /* input */ ,
49 struct smb_hdr * /* out */ ,
50 int * /* bytes returned */ , const int long_op);
133672ef
SF		 51extern int SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses,
52 struct smb_hdr *in_buf, int flags);
d6e04ae6 53extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
d38d8c74 54 struct kvec *, int /* nvec to send */,
133672ef 55 int * /* type of buf returned */ , const int flags);
d38d8c74 56extern int SendReceiveBlockingLock(const unsigned int /* xid */ ,
2cd646a2 57 struct cifsTconInfo *,
7ee1af76
JA		 58 struct smb_hdr * /* input */ ,
59 struct smb_hdr * /* out */ ,
60 int * /* bytes returned */);
d103e164 61extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
d7c8c94d 62extern int is_valid_oplock_break(struct smb_hdr *smb, struct TCP_Server_Info *);
7ba52631 63extern int is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
6148a742 64extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *);
630f3f0c
SF		 65#ifdef CONFIG_CIFS_EXPERIMENTAL
66extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *);
67#endif
1da177e4 68extern unsigned int smbCalcSize(struct smb_hdr *ptr);
70ca734a 69extern unsigned int smbCalcSize_LE(struct smb_hdr *ptr);
1da177e4
LT		 70extern int decode_negTokenInit(unsigned char *security_blob, int length,
71 enum securityEnum *secType);
d38d8c74 72extern int cifs_inet_pton(int, char *source, void *dst);
a761ac57 73extern int map_smb_to_linux_error(struct smb_hdr *smb, int logErr);
1da177e4 74extern void header_assemble(struct smb_hdr *, char /* command */ ,
1982c344
SF		 75 const struct cifsTconInfo *, int /* length of
76 fixed section (word count) in two byte units */);
5815449d
SF		 77extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
78 struct cifsSesInfo *ses,
50c2f753 79 void **request_buf);
09fe7ba7
JL		 80extern struct key *cifs_get_spnego_key(struct cifsSesInfo *sesInfo,
81 const char *hostname);
5815449d 82extern int CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
d38d8c74 83 const int stage,
5815449d 84 const struct nls_table *nls_cp);
1982c344 85extern __u16 GetNextMid(struct TCP_Server_Info *server);
50c2f753 86extern struct oplock_q_entry *AllocOplockQEntry(struct inode *, u16,
737b758c 87 struct cifsTconInfo *);
1da177e4
LT		 88extern void DeleteOplockQEntry(struct oplock_q_entry *);
89extern struct timespec cifs_NTtimeToUnix(u64 /* utc nanoseconds since 1601 */ );
90extern u64 cifs_UnixTimeToNT(struct timespec);
1bd5bbcb
SF		 91extern __le64 cnvrtDosCifsTm(__u16 date, __u16 time);
92extern struct timespec cnvrtDosUnixTm(__u16 date, __u16 time);
93
1da177e4 94extern int cifs_get_inode_info(struct inode **pinode,
d38d8c74 95 const unsigned char *search_path,
1da177e4
LT		 96 FILE_ALL_INFO * pfile_info,
97 struct super_block *sb, int xid);
98extern int cifs_get_inode_info_unix(struct inode **pinode,
99 const unsigned char *search_path,
d38d8c74 100 struct super_block *sb, int xid);
630f3f0c 101extern void acl_to_uid_mode(struct inode *inode, const char *search_path);
953f8681
SF		 102extern int mode_to_acl(struct inode *inode, const char *path);
103
1da177e4
LT		 104extern int cifs_mount(struct super_block *, struct cifs_sb_info *, char *,
105 const char *);
106extern int cifs_umount(struct super_block *, struct cifs_sb_info *);
107void cifs_proc_init(void);
108void cifs_proc_clean(void);
109
d38d8c74
SF		 110extern int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
111 struct nls_table *nls_info);
1da177e4
LT		 112extern int CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses);
113
114extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
115 const char *tree, struct cifsTconInfo *tcon,
116 const struct nls_table *);
117
118extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
ec637e3f 119 const char *searchName, const struct nls_table *nls_codepage,
d38d8c74 120 __u16 *searchHandle, struct cifs_search_info *psrch_inf,
ec637e3f 121 int map, const char dirsep);
1da177e4
LT		 122
123extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
d38d8c74 124 __u16 searchHandle, struct cifs_search_info *psrch_inf);
1da177e4
LT		 125
126extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
127 const __u16 search_handle);
128
129extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
130 const unsigned char *searchName,
131 FILE_ALL_INFO * findData,
acf1a1b1 132 int legacy /* whether to use old info level */,
737b758c 133 const struct nls_table *nls_codepage, int remap);
6b8edfe0 134extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
d38d8c74
SF		 135 const unsigned char *searchName,
136 FILE_ALL_INFO *findData,
137 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 138
139extern int CIFSSMBUnixQPathInfo(const int xid,
140 struct cifsTconInfo *tcon,
141 const unsigned char *searchName,
142 FILE_UNIX_BASIC_INFO * pFindData,
737b758c 143 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 144
145extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
146 const unsigned char *searchName,
147 unsigned char **targetUNCs,
148 unsigned int *number_of_UNC_in_array,
737b758c 149 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 150
151extern int connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
152 const char *old_path,
737b758c 153 const struct nls_table *nls_codepage, int remap);
1da177e4 154extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
d38d8c74 155 const char *old_path,
737b758c 156 const struct nls_table *nls_codepage,
d38d8c74 157 unsigned int *pnum_referrals,
50c2f753 158 unsigned char **preferrals,
737b758c 159 int remap);
8af18971 160extern void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
d38d8c74 161 struct super_block *sb, struct smb_vol *vol);
1da177e4 162extern int CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,
737b758c 163 struct kstatfs *FSData);
20962438
SF		 164extern int SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon,
165 struct kstatfs *FSData);
45abc6ee 166extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon,
ac67055e
JA		 167 __u64 cap);
168
1da177e4 169extern int CIFSSMBQFSAttributeInfo(const int xid,
737b758c
SF		 170 struct cifsTconInfo *tcon);
171extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon);
172extern int CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon);
1da177e4 173extern int CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
737b758c 174 struct kstatfs *FSData);
1da177e4
LT		 175
176extern int CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon,
177 const char *fileName, const FILE_BASIC_INFO * data,
737b758c
SF		 178 const struct nls_table *nls_codepage,
179 int remap_special_chars);
1da177e4
LT		 180extern int CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon,
181 const FILE_BASIC_INFO * data, __u16 fid);
182#if 0
183extern int CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon,
184 char *fileName, __u16 dos_attributes,
185 const struct nls_table *nls_codepage);
186#endif /* possibly unneeded function */
187extern int CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon,
737b758c
SF		 188 const char *fileName, __u64 size,
189 int setAllocationSizeFlag,
190 const struct nls_table *nls_codepage,
191 int remap_special_chars);
1da177e4 192extern int CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon,
d38d8c74 193 __u64 size, __u16 fileHandle, __u32 opener_pid,
737b758c 194 int AllocSizeFlag);
1da177e4
LT		 195extern int CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *pTcon,
196 char *full_path, __u64 mode, __u64 uid,
d38d8c74 197 __u64 gid, dev_t dev,
737b758c
SF		 198 const struct nls_table *nls_codepage,
199 int remap_special_chars);
1da177e4
LT		 200
201extern int CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
202 const char *newName,
737b758c
SF		 203 const struct nls_table *nls_codepage,
204 int remap_special_chars);
1da177e4 205extern int CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon,
737b758c
SF		 206 const char *name, const struct nls_table *nls_codepage,
207 int remap_special_chars);
2d785a50
SF		 208extern int CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon,
209 const char *name, __u16 type,
210 const struct nls_table *nls_codepage,
211 int remap_special_chars);
1da177e4
LT		 212extern int CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon,
213 const char *name,
737b758c
SF		 214 const struct nls_table *nls_codepage,
215 int remap_special_chars);
1da177e4
LT		 216extern int CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
217 const char *fromName, const char *toName,
737b758c
SF		 218 const struct nls_table *nls_codepage,
219 int remap_special_chars);
d38d8c74
SF		 220extern int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
221 int netfid, char *target_name,
737b758c
SF		 222 const struct nls_table *nls_codepage,
223 int remap_special_chars);
1da177e4
LT		 224extern int CIFSCreateHardLink(const int xid,
225 struct cifsTconInfo *tcon,
226 const char *fromName, const char *toName,
737b758c
SF		 227 const struct nls_table *nls_codepage,
228 int remap_special_chars);
1da177e4
LT		 229extern int CIFSUnixCreateHardLink(const int xid,
230 struct cifsTconInfo *tcon,
231 const char *fromName, const char *toName,
d38d8c74 232 const struct nls_table *nls_codepage,
737b758c 233 int remap_special_chars);
1da177e4
LT		 234extern int CIFSUnixCreateSymLink(const int xid,
235 struct cifsTconInfo *tcon,
236 const char *fromName, const char *toName,
237 const struct nls_table *nls_codepage);
238extern int CIFSSMBUnixQuerySymLink(const int xid,
239 struct cifsTconInfo *tcon,
240 const unsigned char *searchName,
241 char *syminfo, const int buflen,
242 const struct nls_table *nls_codepage);
d38d8c74 243extern int CIFSSMBQueryReparseLinkInfo(const int xid,
1da177e4
LT		 244 struct cifsTconInfo *tcon,
245 const unsigned char *searchName,
246 char *symlinkinfo, const int buflen, __u16 fid,
247 const struct nls_table *nls_codepage);
248
249extern int CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
250 const char *fileName, const int disposition,
251 const int access_flags, const int omode,
252 __u16 * netfid, int *pOplock, FILE_ALL_INFO *,
737b758c 253 const struct nls_table *nls_codepage, int remap);
a9d02ad4
SF		 254extern int SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
255 const char *fileName, const int disposition,
256 const int access_flags, const int omode,
257 __u16 * netfid, int *pOplock, FILE_ALL_INFO *,
258 const struct nls_table *nls_codepage, int remap);
d38d8c74 259extern int CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon,
2dd29d31
SF		 260 u32 posix_flags, __u64 mode, __u16 * netfid,
261 FILE_UNIX_BASIC_INFO *pRetData,
262 __u32 *pOplock, const char *name,
d38d8c74 263 const struct nls_table *nls_codepage, int remap);
1da177e4
LT		 264extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon,
265 const int smb_file_id);
266
267extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
d38d8c74
SF		 268 const int netfid, unsigned int count,
269 const __u64 lseek, unsigned int *nbytes, char **buf,
270 int *return_buf_type);
1da177e4
LT		 271extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
272 const int netfid, const unsigned int count,
273 const __u64 lseek, unsigned int *nbytes,
d38d8c74 274 const char *buf, const char __user *ubuf,
1da177e4 275 const int long_op);
1da177e4
LT		 276extern int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
277 const int netfid, const unsigned int count,
d38d8c74 278 const __u64 offset, unsigned int *nbytes,
3e84469d 279 struct kvec *iov, const int nvec, const int long_op);
1da177e4
LT		 280extern int CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
281 const unsigned char *searchName, __u64 * inode_number,
d38d8c74 282 const struct nls_table *nls_codepage,
737b758c 283 int remap_special_chars);
b1a45695 284extern int cifs_convertUCSpath(char *target, const __le16 *source, int maxlen,
d38d8c74
SF		 285 const struct nls_table *codepage);
286extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
287 const struct nls_table *cp, int mapChars);
1da177e4
LT		 288
289extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
290 const __u16 netfid, const __u64 len,
291 const __u64 offset, const __u32 numUnlock,
292 const __u32 numLock, const __u8 lockType,
293 const int waitFlag);
08547b03
SF		 294extern int CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
295 const __u16 smb_file_id, const int get_flag,
d38d8c74 296 const __u64 len, struct file_lock *,
08547b03 297 const __u16 lock_type, const int waitFlag);
1da177e4
LT		 298extern int CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon);
299extern int CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses);
300
301extern struct cifsSesInfo *sesInfoAlloc(void);
302extern void sesInfoFree(struct cifsSesInfo *);
303extern struct cifsTconInfo *tconInfoAlloc(void);
304extern void tconInfoFree(struct cifsTconInfo *);
305
d38d8c74 306extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
84afc29b
SF		 307extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
308 __u32 *);
b609f06a
SF		 309extern int cifs_verify_signature(struct smb_hdr *,
310 const struct mac_key *mac_key,
311 __u32 expected_sequence_number);
312extern int cifs_calculate_mac_key(struct mac_key *key, const char *rn,
313 const char *pass);
d38d8c74 314extern int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *,
1717ffc5 315 const struct nls_table *);
26f57364 316extern void CalcNTLMv2_response(const struct cifsSesInfo *, char *);
d38d8c74 317extern void setup_ntlmv2_rsp(struct cifsSesInfo *, char *,
1717ffc5 318 const struct nls_table *);
7c7b25bc 319#ifdef CONFIG_CIFS_WEAK_PW_HASH
d38d8c74 320extern void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key);
7c7b25bc 321#endif /* CIFS_WEAK_PW_HASH */
1da177e4
LT		 322extern int CIFSSMBCopy(int xid,
323 struct cifsTconInfo *source_tcon,
324 const char *fromName,
325 const __u16 target_tid,
326 const char *toName, const int flags,
50c2f753 327 const struct nls_table *nls_codepage,
737b758c 328 int remap_special_chars);
50c2f753 329extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
d38d8c74
SF		 330 const int notify_subdirs, const __u16 netfid,
331 __u32 filter, struct file *file, int multishot,
167a251a 332 const struct nls_table *nls_codepage);
1da177e4 333extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
d38d8c74 334 const unsigned char *searchName, char *EAData,
737b758c
SF		 335 size_t bufsize, const struct nls_table *nls_codepage,
336 int remap_special_chars);
d38d8c74 337extern ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon,
50c2f753 338 const unsigned char *searchName, const unsigned char *ea_name,
d38d8c74 339 unsigned char *ea_value, size_t buf_size,
737b758c 340 const struct nls_table *nls_codepage, int remap_special_chars);
d38d8c74
SF		 341extern int CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon,
342 const char *fileName, const char *ea_name,
343 const void *ea_value, const __u16 ea_value_len,
737b758c 344 const struct nls_table *nls_codepage, int remap_special_chars);
0a4b92c0 345extern int CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon,
630f3f0c 346 __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
1da177e4
LT		 347extern int CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
348 const unsigned char *searchName,
d38d8c74 349 char *acl_inf, const int buflen, const int acl_type,
737b758c 350 const struct nls_table *nls_codepage, int remap_special_chars);
1da177e4
LT		 351extern int CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
352 const unsigned char *fileName,
353 const char *local_acl, const int buflen, const int acl_type,
737b758c 354 const struct nls_table *nls_codepage, int remap_special_chars);
f654bac2 355extern int CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
d38d8c74 356 const int netfid, __u64 * pExtAttrBits, __u64 *pMask);
1da177e4 357#endif /* _CIFSPROTO_H */
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