1 /*
2 * Copyright (c) 2001-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * 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 the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18 #ifndef __XFS_ACL_H__
19 #define __XFS_ACL_H__
20
21 struct inode;
22 struct posix_acl;
23 struct xfs_inode;
24
25 #define XFS_ACL_MAX_ENTRIES 25
26 #define XFS_ACL_NOT_PRESENT (-1)
27
28 /* On-disk XFS access control list structure */
29 struct xfs_acl {
30 __be32 acl_cnt;
31 struct xfs_acl_entry {
32 __be32 ae_tag;
33 __be32 ae_id;
34 __be16 ae_perm;
35 } acl_entry[XFS_ACL_MAX_ENTRIES];
36 };
37
38 /* On-disk XFS extended attribute names */
39 #define SGI_ACL_FILE "SGI_ACL_FILE"
40 #define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT"
41 #define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
42 #define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
43
44 #ifdef CONFIG_XFS_POSIX_ACL
45 extern int xfs_check_acl(struct inode *inode, int mask);
46 extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
47 extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl);
48 extern int xfs_acl_chmod(struct inode *inode);
49 extern int posix_acl_access_exists(struct inode *inode);
50 extern int posix_acl_default_exists(struct inode *inode);
51
52 extern struct xattr_handler xfs_xattr_system_handler;
53 #else
54 # define xfs_check_acl NULL
55 # define xfs_get_acl(inode, type) NULL
56 # define xfs_inherit_acl(inode, default_acl) 0
57 # define xfs_acl_chmod(inode) 0
58 # define posix_acl_access_exists(inode) 0
59 # define posix_acl_default_exists(inode) 0
60 #endif /* CONFIG_XFS_POSIX_ACL */
61 #endif /* __XFS_ACL_H__ */
62
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