56 строки
1.6 KiB
C
56 строки
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
File: linux/posix_acl_xattr.h
|
|
|
|
Extended attribute system call representation of Access Control Lists.
|
|
|
|
Copyright (C) 2000 by Andreas Gruenbacher <a.gruenbacher@computer.org>
|
|
Copyright (C) 2002 SGI - Silicon Graphics, Inc <linux-xfs@oss.sgi.com>
|
|
*/
|
|
#ifndef _POSIX_ACL_XATTR_H
|
|
#define _POSIX_ACL_XATTR_H
|
|
|
|
#include <uapi/linux/xattr.h>
|
|
#include <uapi/linux/posix_acl_xattr.h>
|
|
#include <linux/posix_acl.h>
|
|
|
|
static inline size_t
|
|
posix_acl_xattr_size(int count)
|
|
{
|
|
return (sizeof(struct posix_acl_xattr_header) +
|
|
(count * sizeof(struct posix_acl_xattr_entry)));
|
|
}
|
|
|
|
static inline int
|
|
posix_acl_xattr_count(size_t size)
|
|
{
|
|
if (size < sizeof(struct posix_acl_xattr_header))
|
|
return -1;
|
|
size -= sizeof(struct posix_acl_xattr_header);
|
|
if (size % sizeof(struct posix_acl_xattr_entry))
|
|
return -1;
|
|
return size / sizeof(struct posix_acl_xattr_entry);
|
|
}
|
|
|
|
#ifdef CONFIG_FS_POSIX_ACL
|
|
void posix_acl_fix_xattr_from_user(void *value, size_t size);
|
|
void posix_acl_fix_xattr_to_user(void *value, size_t size);
|
|
#else
|
|
static inline void posix_acl_fix_xattr_from_user(void *value, size_t size)
|
|
{
|
|
}
|
|
static inline void posix_acl_fix_xattr_to_user(void *value, size_t size)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
struct posix_acl *posix_acl_from_xattr(struct user_namespace *user_ns,
|
|
const void *value, size_t size);
|
|
int posix_acl_to_xattr(struct user_namespace *user_ns,
|
|
const struct posix_acl *acl, void *buffer, size_t size);
|
|
|
|
extern const struct xattr_handler posix_acl_access_xattr_handler;
|
|
extern const struct xattr_handler posix_acl_default_xattr_handler;
|
|
|
|
#endif /* _POSIX_ACL_XATTR_H */
|