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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2001-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_ACL_H__
19#define __XFS_ACL_H__
20
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020021struct inode;
22struct posix_acl;
23struct xfs_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
Felix Blyakher1aacc062009-03-31 00:23:37 -050025#define XFS_ACL_MAX_ENTRIES 25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#define XFS_ACL_NOT_PRESENT (-1)
27
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020028/* On-disk XFS access control list structure */
29struct 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};
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
38/* On-disk XFS extended attribute names */
Dave Chinnera9273ca2010-01-20 10:47:48 +110039#define SGI_ACL_FILE (unsigned char *)"SGI_ACL_FILE"
40#define SGI_ACL_DEFAULT (unsigned char *)"SGI_ACL_DEFAULT"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
42#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
43
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#ifdef CONFIG_XFS_POSIX_ACL
Nick Pigginb74c79e2011-01-07 17:49:58 +110045extern int xfs_check_acl(struct inode *inode, int mask, unsigned int flags);
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020046extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
47extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl);
48extern int xfs_acl_chmod(struct inode *inode);
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020049extern int posix_acl_access_exists(struct inode *inode);
50extern int posix_acl_default_exists(struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
Stephen Hemminger46e58762010-05-13 17:53:20 -070052extern const struct xattr_handler xfs_xattr_acl_access_handler;
53extern const struct xattr_handler xfs_xattr_acl_default_handler;
Linus Torvalds1da177e2005-04-16 15:20:36 -070054#else
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020055# define xfs_check_acl NULL
56# define xfs_get_acl(inode, type) NULL
57# define xfs_inherit_acl(inode, default_acl) 0
58# define xfs_acl_chmod(inode) 0
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020059# define posix_acl_access_exists(inode) 0
60# define posix_acl_default_exists(inode) 0
61#endif /* CONFIG_XFS_POSIX_ACL */
Linus Torvalds1da177e2005-04-16 15:20:36 -070062#endif /* __XFS_ACL_H__ */