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

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#include <linux/init.h>
 3#include <linux/posix_acl.h>
 4
 5#define REISERFS_ACL_VERSION	0x0001
 6
 7typedef struct {
 8	__le16 e_tag;
 9	__le16 e_perm;
10	__le32 e_id;
11} reiserfs_acl_entry;
12
13typedef struct {
14	__le16 e_tag;
15	__le16 e_perm;
16} reiserfs_acl_entry_short;
17
18typedef struct {
19	__le32 a_version;
20} reiserfs_acl_header;
21
22static inline size_t reiserfs_acl_size(int count)
23{
24	if (count <= 4) {
25		return sizeof(reiserfs_acl_header) +
26		    count * sizeof(reiserfs_acl_entry_short);
27	} else {
28		return sizeof(reiserfs_acl_header) +
29		    4 * sizeof(reiserfs_acl_entry_short) +
30		    (count - 4) * sizeof(reiserfs_acl_entry);
31	}
32}
33
34static inline int reiserfs_acl_count(size_t size)
35{
36	ssize_t s;
37	size -= sizeof(reiserfs_acl_header);
38	s = size - 4 * sizeof(reiserfs_acl_entry_short);
39	if (s < 0) {
40		if (size % sizeof(reiserfs_acl_entry_short))
41			return -1;
42		return size / sizeof(reiserfs_acl_entry_short);
43	} else {
44		if (s % sizeof(reiserfs_acl_entry))
45			return -1;
46		return s / sizeof(reiserfs_acl_entry) + 4;
47	}
48}
49
50#ifdef CONFIG_REISERFS_FS_POSIX_ACL
51struct posix_acl *reiserfs_get_acl(struct inode *inode, int type, bool rcu);
52int reiserfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
53		     struct posix_acl *acl, int type);
54int reiserfs_acl_chmod(struct dentry *dentry);
55int reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
56				 struct inode *dir, struct dentry *dentry,
57				 struct inode *inode);
58int reiserfs_cache_default_acl(struct inode *dir);
59
60#else
61
62#define reiserfs_cache_default_acl(inode) 0
63#define reiserfs_get_acl NULL
64#define reiserfs_set_acl NULL
65
66static inline int reiserfs_acl_chmod(struct dentry *dentry)
67{
68	return 0;
69}
70
71static inline int
72reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
73			     const struct inode *dir, struct dentry *dentry,
74			     struct inode *inode)
75{
76	return 0;
77}
78#endif