1#include <linux/init.h>
2#include <linux/posix_acl.h>
3
4#define REISERFS_ACL_VERSION	0x0001
5
6typedef struct {
7	__le16 e_tag;
8	__le16 e_perm;
9	__le32 e_id;
10} reiserfs_acl_entry;
11
12typedef struct {
13	__le16 e_tag;
14	__le16 e_perm;
15} reiserfs_acl_entry_short;
16
17typedef struct {
18	__le32 a_version;
19} reiserfs_acl_header;
20
21static inline size_t reiserfs_acl_size(int count)
22{
23	if (count <= 4) {
24		return sizeof(reiserfs_acl_header) +
25		    count * sizeof(reiserfs_acl_entry_short);
26	} else {
27		return sizeof(reiserfs_acl_header) +
28		    4 * sizeof(reiserfs_acl_entry_short) +
29		    (count - 4) * sizeof(reiserfs_acl_entry);
30	}
31}
32
33static 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
49#ifdef CONFIG_REISERFS_FS_POSIX_ACL
50struct posix_acl *reiserfs_get_acl(struct inode *inode, int type);
51int reiserfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
52int reiserfs_acl_chmod(struct inode *inode);
53int reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
54				 struct inode *dir, struct dentry *dentry,
55				 struct inode *inode);
56int reiserfs_cache_default_acl(struct inode *dir);
57
58#else
59
60#define reiserfs_cache_default_acl(inode) 0
61#define reiserfs_get_acl NULL
62#define reiserfs_set_acl NULL
63
64static inline int reiserfs_acl_chmod(struct inode *inode)
65{
66	return 0;
67}
68
69static inline int
70reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
71			     const struct inode *dir, struct dentry *dentry,
72			     struct inode *inode)
73{
74	return 0;
75}
76#endif
77