Commit | Line | Data |
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1da177e4 | 1 | /* |
63f83c9f | 2 | * Copyright (C) International Business Machines Corp., 2000-2002 |
1da177e4 LT |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
12 | * the GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
18 | ||
19 | #ifndef H_JFS_XATTR | |
20 | #define H_JFS_XATTR | |
21 | ||
c8b6056a AG |
22 | #include <linux/xattr.h> |
23 | ||
1da177e4 LT |
24 | /* |
25 | * jfs_ea_list describe the on-disk format of the extended attributes. | |
26 | * I know the null-terminator is redundant since namelen is stored, but | |
27 | * I am maintaining compatibility with OS/2 where possible. | |
28 | */ | |
29 | struct jfs_ea { | |
30 | u8 flag; /* Unused? */ | |
31 | u8 namelen; /* Length of name */ | |
32 | __le16 valuelen; /* Length of value */ | |
33 | char name[0]; /* Attribute name (includes null-terminator) */ | |
34 | }; /* Value immediately follows name */ | |
35 | ||
36 | struct jfs_ea_list { | |
37 | __le32 size; /* overall size */ | |
38 | struct jfs_ea ea[0]; /* Variable length list */ | |
39 | }; | |
40 | ||
41 | /* Macros for defining maxiumum number of bytes supported for EAs */ | |
42 | #define MAXEASIZE 65535 | |
43 | #define MAXEALISTSIZE MAXEASIZE | |
44 | ||
45 | /* | |
46 | * some macros for dealing with variable length EA lists. | |
47 | */ | |
48 | #define EA_SIZE(ea) \ | |
49 | (sizeof (struct jfs_ea) + (ea)->namelen + 1 + \ | |
50 | le16_to_cpu((ea)->valuelen)) | |
51 | #define NEXT_EA(ea) ((struct jfs_ea *) (((char *) (ea)) + (EA_SIZE (ea)))) | |
52 | #define FIRST_EA(ealist) ((ealist)->ea) | |
53 | #define EALIST_SIZE(ealist) le32_to_cpu((ealist)->size) | |
54 | #define END_EALIST(ealist) \ | |
55 | ((struct jfs_ea *) (((char *) (ealist)) + EALIST_SIZE(ealist))) | |
56 | ||
4f4b401b DK |
57 | extern int __jfs_setxattr(tid_t, struct inode *, const char *, const void *, |
58 | size_t, int); | |
1da177e4 | 59 | extern ssize_t __jfs_getxattr(struct inode *, const char *, void *, size_t); |
1da177e4 | 60 | extern ssize_t jfs_listxattr(struct dentry *, char *, size_t); |
1da177e4 | 61 | |
2cc6a5a0 CH |
62 | extern const struct xattr_handler *jfs_xattr_handlers[]; |
63 | ||
1d15b10f | 64 | #ifdef CONFIG_JFS_SECURITY |
2a7dba39 EP |
65 | extern int jfs_init_security(tid_t, struct inode *, struct inode *, |
66 | const struct qstr *); | |
1d15b10f DK |
67 | #else |
68 | static inline int jfs_init_security(tid_t tid, struct inode *inode, | |
2a7dba39 | 69 | struct inode *dir, const struct qstr *qstr) |
1d15b10f DK |
70 | { |
71 | return 0; | |
72 | } | |
73 | #endif | |
74 | ||
1da177e4 | 75 | #endif /* H_JFS_XATTR */ |