Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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_acl_chmod(struct inode *inode);
52int reiserfs_inherit_default_acl(struct inode *dir, struct dentry *dentry,
53 struct inode *inode);
54int reiserfs_cache_default_acl(struct inode *dir);
55extern int reiserfs_xattr_posix_acl_init(void) __init;
56extern int reiserfs_xattr_posix_acl_exit(void);
57extern struct reiserfs_xattr_handler posix_acl_default_handler;
58extern struct reiserfs_xattr_handler posix_acl_access_handler;
59
60static inline void reiserfs_init_acl_access(struct inode *inode)
61{
62 REISERFS_I(inode)->i_acl_access = NULL;
63}
64
65static inline void reiserfs_init_acl_default(struct inode *inode)
66{
67 REISERFS_I(inode)->i_acl_default = NULL;
68}
69#else
70
71#define reiserfs_cache_default_acl(inode) 0
72
73static inline struct posix_acl *reiserfs_get_acl(struct inode *inode, int type)
74{
75 return NULL;
76}
77
78static inline int reiserfs_xattr_posix_acl_init(void)
79{
80 return 0;
81}
82
83static inline int reiserfs_xattr_posix_acl_exit(void)
84{
85 return 0;
86}
87
88static inline int reiserfs_acl_chmod(struct inode *inode)
89{
90 return 0;
91}
92
93static inline int
94reiserfs_inherit_default_acl(const struct inode *dir, struct dentry *dentry,
95 struct inode *inode)
96{
97 return 0;
98}
99
100static inline void reiserfs_init_acl_access(struct inode *inode)
101{
102}
103
104static inline void reiserfs_init_acl_default(struct inode *inode)
105{
106}
107#endif