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/* SPDX-License-Identifier: GPL-2.0 */
/*
* File: linux/nfsacl.h
*
* (C) 2003 Andreas Gruenbacher <agruen@suse.de>
*/
#ifndef __LINUX_NFSACL_H
#define __LINUX_NFSACL_H
#include <linux/posix_acl.h>
#include <linux/sunrpc/xdr.h>
#include <uapi/linux/nfsacl.h>
/* Maximum number of ACL entries over NFS */
#define NFS_ACL_MAX_ENTRIES 1024
#define NFSACL_MAXWORDS (2*(2+3*NFS_ACL_MAX_ENTRIES))
#define NFSACL_MAXPAGES ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
>> PAGE_SHIFT)
#define NFS_ACL_MAX_ENTRIES_INLINE (5)
#define NFS_ACL_INLINE_BUFSIZE ((2*(2+3*NFS_ACL_MAX_ENTRIES_INLINE)) << 2)
static inline unsigned int
nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
{
unsigned int w = 16;
w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
if (acl_default)
w += max((int)acl_default->a_count, 4) * 12;
return w;
}
extern int
nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
struct posix_acl *acl, int encode_entries, int typeflag);
extern int
nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
struct posix_acl **pacl);
extern bool
nfs_stream_decode_acl(struct xdr_stream *xdr, unsigned int *aclcnt,
struct posix_acl **pacl);
extern bool
nfs_stream_encode_acl(struct xdr_stream *xdr, struct inode *inode,
struct posix_acl *acl, int encode_entries, int typeflag);
#endif /* __LINUX_NFSACL_H */