2 File: linux/posix_acl_xattr.h
4 Extended attribute system call representation of Access Control Lists.
6 Copyright (C) 2000 by Andreas Gruenbacher <a.gruenbacher@computer.org>
7 Copyright (C) 2002 SGI - Silicon Graphics, Inc <linux-xfs@oss.sgi.com>
9 #ifndef _POSIX_ACL_XATTR_H
10 #define _POSIX_ACL_XATTR_H
12 #include <uapi/linux/xattr.h>
13 #include <uapi/linux/posix_acl_xattr.h>
14 #include <linux/posix_acl.h>
17 posix_acl_xattr_size(int count
)
19 return (sizeof(struct posix_acl_xattr_header
) +
20 (count
* sizeof(struct posix_acl_xattr_entry
)));
24 posix_acl_xattr_count(size_t size
)
26 if (size
< sizeof(struct posix_acl_xattr_header
))
28 size
-= sizeof(struct posix_acl_xattr_header
);
29 if (size
% sizeof(struct posix_acl_xattr_entry
))
31 return size
/ sizeof(struct posix_acl_xattr_entry
);
34 #ifdef CONFIG_FS_POSIX_ACL
35 void posix_acl_fix_xattr_from_user(void *value
, size_t size
);
36 void posix_acl_fix_xattr_to_user(void *value
, size_t size
);
38 static inline void posix_acl_fix_xattr_from_user(void *value
, size_t size
)
41 static inline void posix_acl_fix_xattr_to_user(void *value
, size_t size
)
46 struct posix_acl
*posix_acl_from_xattr(struct user_namespace
*user_ns
,
47 const void *value
, size_t size
);
48 int posix_acl_to_xattr(struct user_namespace
*user_ns
,
49 const struct posix_acl
*acl
, void *buffer
, size_t size
);
51 extern const struct xattr_handler posix_acl_access_xattr_handler
;
52 extern const struct xattr_handler posix_acl_default_xattr_handler
;
54 #endif /* _POSIX_ACL_XATTR_H */