| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 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__ */ |