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 (unsigned char *)"SGI_ACL_FILE" 40 #define SGI_ACL_DEFAULT (unsigned char *)"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 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); 48 extern int posix_acl_access_exists(struct inode *inode); 49 extern int posix_acl_default_exists(struct inode *inode); 50 51 extern const struct xattr_handler xfs_xattr_acl_access_handler; 52 extern const struct xattr_handler xfs_xattr_acl_default_handler; 53 #else 54 static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type) 55 { 56 return NULL; 57 } 58 # define xfs_inherit_acl(inode, default_acl) 0 59 # define xfs_acl_chmod(inode) 0 60 # define posix_acl_access_exists(inode) 0 61 # define posix_acl_default_exists(inode) 0 62 #endif /* CONFIG_XFS_POSIX_ACL */ 63 #endif /* __XFS_ACL_H__ */ 64