81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
#include <linux/init.h>
|
|
#include <linux/posix_acl.h>
|
|
|
|
#define REISERFS_ACL_VERSION 0x0001
|
|
|
|
typedef struct {
|
|
__le16 e_tag;
|
|
__le16 e_perm;
|
|
__le32 e_id;
|
|
} reiserfs_acl_entry;
|
|
|
|
typedef struct {
|
|
__le16 e_tag;
|
|
__le16 e_perm;
|
|
} reiserfs_acl_entry_short;
|
|
|
|
typedef struct {
|
|
__le32 a_version;
|
|
} reiserfs_acl_header;
|
|
|
|
static inline size_t reiserfs_acl_size(int count)
|
|
{
|
|
if (count <= 4) {
|
|
return sizeof(reiserfs_acl_header) +
|
|
count * sizeof(reiserfs_acl_entry_short);
|
|
} else {
|
|
return sizeof(reiserfs_acl_header) +
|
|
4 * sizeof(reiserfs_acl_entry_short) +
|
|
(count - 4) * sizeof(reiserfs_acl_entry);
|
|
}
|
|
}
|
|
|
|
static inline int reiserfs_acl_count(size_t size)
|
|
{
|
|
ssize_t s;
|
|
size -= sizeof(reiserfs_acl_header);
|
|
s = size - 4 * sizeof(reiserfs_acl_entry_short);
|
|
if (s < 0) {
|
|
if (size % sizeof(reiserfs_acl_entry_short))
|
|
return -1;
|
|
return size / sizeof(reiserfs_acl_entry_short);
|
|
} else {
|
|
if (s % sizeof(reiserfs_acl_entry))
|
|
return -1;
|
|
return s / sizeof(reiserfs_acl_entry) + 4;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_REISERFS_FS_POSIX_ACL
|
|
struct posix_acl *reiserfs_get_acl(struct inode *inode, int type);
|
|
int reiserfs_acl_chmod(struct inode *inode);
|
|
int reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
|
|
struct inode *dir, struct dentry *dentry,
|
|
struct inode *inode);
|
|
int reiserfs_cache_default_acl(struct inode *dir);
|
|
extern struct xattr_handler reiserfs_posix_acl_default_handler;
|
|
extern struct xattr_handler reiserfs_posix_acl_access_handler;
|
|
|
|
#else
|
|
|
|
#define reiserfs_cache_default_acl(inode) 0
|
|
|
|
static inline struct posix_acl *reiserfs_get_acl(struct inode *inode, int type)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int reiserfs_acl_chmod(struct inode *inode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
|
|
const struct inode *dir, struct dentry *dentry,
|
|
struct inode *inode)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|