1/*
2 * File: linux/nfsacl.h
3 *
4 * (C) 2003 Andreas Gruenbacher <agruen@suse.de>
5 */
6#ifndef __LINUX_NFSACL_H
7#define __LINUX_NFSACL_H
8
9
10#include <linux/posix_acl.h>
11#include <linux/sunrpc/xdr.h>
12#include <uapi/linux/nfsacl.h>
13
14/* Maximum number of ACL entries over NFS */
15#define NFS_ACL_MAX_ENTRIES	1024
16
17#define NFSACL_MAXWORDS		(2*(2+3*NFS_ACL_MAX_ENTRIES))
18#define NFSACL_MAXPAGES		((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
19				 >> PAGE_SHIFT)
20
21#define NFS_ACL_MAX_ENTRIES_INLINE	(5)
22#define NFS_ACL_INLINE_BUFSIZE	((2*(2+3*NFS_ACL_MAX_ENTRIES_INLINE)) << 2)
23
24static inline unsigned int
25nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
26{
27	unsigned int w = 16;
28	w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
29	if (acl_default)
30		w += max((int)acl_default->a_count, 4) * 12;
31	return w;
32}
33
34extern int
35nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
36	      struct posix_acl *acl, int encode_entries, int typeflag);
37extern int
38nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
39	      struct posix_acl **pacl);
40
41#endif  /* __LINUX_NFSACL_H */
42