Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/init.h> |
| 2 | #include <linux/posix_acl.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | |
| 4 | #define REISERFS_ACL_VERSION 0x0001 |
| 5 | |
| 6 | typedef struct { |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 7 | __le16 e_tag; |
| 8 | __le16 e_perm; |
| 9 | __le32 e_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | } reiserfs_acl_entry; |
| 11 | |
| 12 | typedef struct { |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 13 | __le16 e_tag; |
| 14 | __le16 e_perm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | } reiserfs_acl_entry_short; |
| 16 | |
| 17 | typedef struct { |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 18 | __le32 a_version; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | } reiserfs_acl_header; |
| 20 | |
| 21 | static inline size_t reiserfs_acl_size(int count) |
| 22 | { |
| 23 | if (count <= 4) { |
| 24 | return sizeof(reiserfs_acl_header) + |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 25 | count * sizeof(reiserfs_acl_entry_short); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | } else { |
| 27 | return sizeof(reiserfs_acl_header) + |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 28 | 4 * sizeof(reiserfs_acl_entry_short) + |
| 29 | (count - 4) * sizeof(reiserfs_acl_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | } |
| 31 | } |
| 32 | |
| 33 | static inline int reiserfs_acl_count(size_t size) |
| 34 | { |
| 35 | ssize_t s; |
| 36 | size -= sizeof(reiserfs_acl_header); |
| 37 | s = size - 4 * sizeof(reiserfs_acl_entry_short); |
| 38 | if (s < 0) { |
| 39 | if (size % sizeof(reiserfs_acl_entry_short)) |
| 40 | return -1; |
| 41 | return size / sizeof(reiserfs_acl_entry_short); |
| 42 | } else { |
| 43 | if (s % sizeof(reiserfs_acl_entry)) |
| 44 | return -1; |
| 45 | return s / sizeof(reiserfs_acl_entry) + 4; |
| 46 | } |
| 47 | } |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #ifdef CONFIG_REISERFS_FS_POSIX_ACL |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 50 | struct posix_acl *reiserfs_get_acl(struct inode *inode, int type); |
| 51 | int reiserfs_acl_chmod(struct inode *inode); |
| 52 | int reiserfs_inherit_default_acl(struct inode *dir, struct dentry *dentry, |
| 53 | struct inode *inode); |
| 54 | int reiserfs_cache_default_acl(struct inode *dir); |
| 55 | extern int reiserfs_xattr_posix_acl_init(void) __init; |
| 56 | extern int reiserfs_xattr_posix_acl_exit(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | extern struct reiserfs_xattr_handler posix_acl_default_handler; |
| 58 | extern struct reiserfs_xattr_handler posix_acl_access_handler; |
Alexey Dobriyan | cfe1467 | 2006-09-29 02:00:00 -0700 | [diff] [blame^] | 59 | |
| 60 | static inline void reiserfs_init_acl_access(struct inode *inode) |
| 61 | { |
| 62 | REISERFS_I(inode)->i_acl_access = NULL; |
| 63 | } |
| 64 | |
| 65 | static inline void reiserfs_init_acl_default(struct inode *inode) |
| 66 | { |
| 67 | REISERFS_I(inode)->i_acl_default = NULL; |
| 68 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | #else |
| 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #define reiserfs_cache_default_acl(inode) 0 |
| 72 | |
Andrew Morton | bc5e483 | 2006-02-04 23:27:51 -0800 | [diff] [blame] | 73 | static inline struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) |
| 74 | { |
| 75 | return NULL; |
| 76 | } |
| 77 | |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 78 | static inline int reiserfs_xattr_posix_acl_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static inline int reiserfs_xattr_posix_acl_exit(void) |
| 84 | { |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | static inline int reiserfs_acl_chmod(struct inode *inode) |
| 89 | { |
| 90 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | static inline int |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 94 | reiserfs_inherit_default_acl(const struct inode *dir, struct dentry *dentry, |
| 95 | struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | { |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 97 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | } |
| 99 | |
Alexey Dobriyan | cfe1467 | 2006-09-29 02:00:00 -0700 | [diff] [blame^] | 100 | static inline void reiserfs_init_acl_access(struct inode *inode) |
| 101 | { |
| 102 | } |
| 103 | |
| 104 | static inline void reiserfs_init_acl_default(struct inode *inode) |
| 105 | { |
| 106 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | #endif |