51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
|
|
File: linux/xattr_acl.h
|
|
|
|
(extended attribute representation of access control lists)
|
|
|
|
(C) 2000 Andreas Gruenbacher, <a.gruenbacher@computer.org>
|
|
*/
|
|
|
|
#ifndef _LINUX_XATTR_ACL_H
|
|
#define _LINUX_XATTR_ACL_H
|
|
|
|
#include <linux/posix_acl.h>
|
|
|
|
#define XATTR_NAME_ACL_ACCESS "system.posix_acl_access"
|
|
#define XATTR_NAME_ACL_DEFAULT "system.posix_acl_default"
|
|
|
|
#define XATTR_ACL_VERSION 0x0002
|
|
|
|
typedef struct {
|
|
__u16 e_tag;
|
|
__u16 e_perm;
|
|
__u32 e_id;
|
|
} xattr_acl_entry;
|
|
|
|
typedef struct {
|
|
__u32 a_version;
|
|
xattr_acl_entry a_entries[0];
|
|
} xattr_acl_header;
|
|
|
|
static inline size_t xattr_acl_size(int count)
|
|
{
|
|
return sizeof(xattr_acl_header) + count * sizeof(xattr_acl_entry);
|
|
}
|
|
|
|
static inline int xattr_acl_count(size_t size)
|
|
{
|
|
if (size < sizeof(xattr_acl_header))
|
|
return -1;
|
|
size -= sizeof(xattr_acl_header);
|
|
if (size % sizeof(xattr_acl_entry))
|
|
return -1;
|
|
return size / sizeof(xattr_acl_entry);
|
|
}
|
|
|
|
struct posix_acl * posix_acl_from_xattr(const void *value, size_t size);
|
|
int posix_acl_to_xattr(const struct posix_acl *acl, void *buffer, size_t size);
|
|
|
|
|
|
|
|
#endif /* _LINUX_XATTR_ACL_H */
|