[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / xfs / xfs_acl.h

/*
 * Copyright (c) 2001-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_ACL_H__
#define __XFS_ACL_H__

struct inode;
struct posix_acl;
struct xfs_inode;

#define XFS_ACL_MAX_ENTRIES 25
#define XFS_ACL_NOT_PRESENT (-1)

/* On-disk XFS access control list structure */
struct xfs_acl {
	__be32		acl_cnt;
	struct xfs_acl_entry {
		__be32	ae_tag;
		__be32	ae_id;
		__be16	ae_perm;
	} acl_entry[XFS_ACL_MAX_ENTRIES];
};

/* On-disk XFS extended attribute names */
#define SGI_ACL_FILE		(unsigned char *)"SGI_ACL_FILE"
#define SGI_ACL_DEFAULT		(unsigned char *)"SGI_ACL_DEFAULT"
#define SGI_ACL_FILE_SIZE	(sizeof(SGI_ACL_FILE)-1)
#define SGI_ACL_DEFAULT_SIZE	(sizeof(SGI_ACL_DEFAULT)-1)

#ifdef CONFIG_XFS_POSIX_ACL
extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl);
extern int xfs_acl_chmod(struct inode *inode);
extern int posix_acl_access_exists(struct inode *inode);
extern int posix_acl_default_exists(struct inode *inode);

extern const struct xattr_handler xfs_xattr_acl_access_handler;
extern const struct xattr_handler xfs_xattr_acl_default_handler;
#else
static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type)
{
	return NULL;
}
# define xfs_inherit_acl(inode, default_acl)		0
# define xfs_acl_chmod(inode)				0
# define posix_acl_access_exists(inode)			0
# define posix_acl_default_exists(inode)		0
#endif /* CONFIG_XFS_POSIX_ACL */
#endif	/* __XFS_ACL_H__ */
Commit	Line	Data
1da177e4	1	/*
7b718769 NS	2	* Copyright (c) 2001-2005 Silicon Graphics, Inc.
7b718769 NS	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
7b718769 NS	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.
1da177e4	13	*
7b718769 NS	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
1da177e4 LT	17	*/
	18	#ifndef __XFS_ACL_H__
	19	#define __XFS_ACL_H__
	20
ef14f0c1 CH	21	struct inode;
	22	struct posix_acl;
	23	struct xfs_inode;
1da177e4	24
1aacc064	25	#define XFS_ACL_MAX_ENTRIES 25
1da177e4 LT	26	#define XFS_ACL_NOT_PRESENT (-1)
1da177e4 LT	27
ef14f0c1 CH	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	};
1da177e4 LT	37
1da177e4 LT	38	/* On-disk XFS extended attribute names */
a9273ca5 DC	39	#define SGI_ACL_FILE (unsigned char *)"SGI_ACL_FILE"
a9273ca5 DC	40	#define SGI_ACL_DEFAULT (unsigned char *)"SGI_ACL_DEFAULT"
1da177e4 LT	41	#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
	42	#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
	43
1da177e4	44	#ifdef CONFIG_XFS_POSIX_ACL
ef14f0c1 CH	45	extern struct posix_acl xfs_get_acl(struct inode inode, int type);
	46	extern int xfs_inherit_acl(struct inode inode, struct posix_acl default_acl);
	47	extern int xfs_acl_chmod(struct inode *inode);
ef14f0c1 CH	48	extern int posix_acl_access_exists(struct inode *inode);
ef14f0c1 CH	49	extern int posix_acl_default_exists(struct inode *inode);
1da177e4	50
46e58764 SH	51	extern const struct xattr_handler xfs_xattr_acl_access_handler;
46e58764 SH	52	extern const struct xattr_handler xfs_xattr_acl_default_handler;
1da177e4	53	#else
a5a7bbcc MT	54	static inline struct posix_acl xfs_get_acl(struct inode inode, int type)
	55	{
	56	return NULL;
	57	}
ef14f0c1 CH	58	# define xfs_inherit_acl(inode, default_acl) 0
ef14f0c1 CH	59	# define xfs_acl_chmod(inode) 0
ef14f0c1 CH	60	# define posix_acl_access_exists(inode) 0
	61	# define posix_acl_default_exists(inode) 0
	62	#endif /* CONFIG_XFS_POSIX_ACL */
1da177e4	63	#endif /* __XFS_ACL_H__ */