crypto.h revision 9663:ace9a2ac3683 
1/**
2 * crypto.h - Exports for dealing with encrypted files.  Part of the
3 *            Linux-NTFS project.
4 *
5 * Copyright (c) 2007 Yura Pakhuchiy
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program 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 the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program (in the main directory of the Linux-NTFS
19 * distribution in the file COPYING); if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21 */
22
23#ifndef _NTFS_CRYPTO_H
24#define _NTFS_CRYPTO_H
25
26extern ntfschar NTFS_EFS[5];
27
28/*
29 * This is our Big Secret (TM) structure, so do not allow anyone even read it
30 * values. ;-) In fact, it is private because exist only in libntfs version
31 * compiled with cryptography support, so users can not depend on it.
32 */
33typedef struct _ntfs_crypto_attr ntfs_crypto_attr;
34
35/*
36 * These functions should not be used directly. They are called for encrypted
37 * attributes from corresponding functions without _crypto_ part.
38 */
39
40extern int ntfs_crypto_attr_open(ntfs_attr *na);
41extern void ntfs_crypto_attr_close(ntfs_attr *na);
42
43extern s64 ntfs_crypto_attr_pread(ntfs_attr *na, const s64 pos, s64 count,
44		void *b);
45
46#endif /* _NTFS_CRYPTO_H */
47