Commit | Line | Data |
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1da177e4 LT |
1 | #include <linux/init.h> |
2 | #include <linux/posix_acl.h> | |
1da177e4 LT |
3 | |
4 | #define REISERFS_ACL_VERSION 0x0001 | |
5 | ||
6 | typedef struct { | |
bd4c625c LT |
7 | __le16 e_tag; |
8 | __le16 e_perm; | |
9 | __le32 e_id; | |
1da177e4 LT |
10 | } reiserfs_acl_entry; |
11 | ||
12 | typedef struct { | |
bd4c625c LT |
13 | __le16 e_tag; |
14 | __le16 e_perm; | |
1da177e4 LT |
15 | } reiserfs_acl_entry_short; |
16 | ||
17 | typedef struct { | |
bd4c625c | 18 | __le32 a_version; |
1da177e4 LT |
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) + | |
bd4c625c | 25 | count * sizeof(reiserfs_acl_entry_short); |
1da177e4 LT |
26 | } else { |
27 | return sizeof(reiserfs_acl_header) + | |
bd4c625c LT |
28 | 4 * sizeof(reiserfs_acl_entry_short) + |
29 | (count - 4) * sizeof(reiserfs_acl_entry); | |
1da177e4 LT |
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 | ||
1da177e4 | 49 | #ifdef CONFIG_REISERFS_FS_POSIX_ACL |
bd4c625c LT |
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); | |
1da177e4 LT |
57 | extern struct reiserfs_xattr_handler posix_acl_default_handler; |
58 | extern struct reiserfs_xattr_handler posix_acl_access_handler; | |
cfe14677 AD |
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 | } | |
1da177e4 LT |
69 | #else |
70 | ||
1da177e4 LT |
71 | #define reiserfs_cache_default_acl(inode) 0 |
72 | ||
bc5e483d AM |
73 | static inline struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) |
74 | { | |
75 | return NULL; | |
76 | } | |
77 | ||
bd4c625c | 78 | static inline int reiserfs_xattr_posix_acl_init(void) |
1da177e4 | 79 | { |
bd4c625c | 80 | return 0; |
1da177e4 LT |
81 | } |
82 | ||
bd4c625c | 83 | static inline int reiserfs_xattr_posix_acl_exit(void) |
1da177e4 | 84 | { |
bd4c625c | 85 | return 0; |
1da177e4 LT |
86 | } |
87 | ||
bd4c625c | 88 | static inline int reiserfs_acl_chmod(struct inode *inode) |
1da177e4 | 89 | { |
bd4c625c | 90 | return 0; |
1da177e4 LT |
91 | } |
92 | ||
93 | static inline int | |
bd4c625c LT |
94 | reiserfs_inherit_default_acl(const struct inode *dir, struct dentry *dentry, |
95 | struct inode *inode) | |
1da177e4 | 96 | { |
bd4c625c | 97 | return 0; |
1da177e4 LT |
98 | } |
99 | ||
cfe14677 AD |
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 | } | |
1da177e4 | 107 | #endif |