LXR linux/include/linux/nfsacl.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * File: linux/nfsacl.h
   4 *
   5 * (C) 2003 Andreas Gruenbacher <agruen@suse.de>
   6 */
   7#ifndef __LINUX_NFSACL_H
   8#define __LINUX_NFSACL_H
   9
  10
  11#include <linux/posix_acl.h>
  12#include <linux/sunrpc/xdr.h>
  13#include <uapi/linux/nfsacl.h>
  14
  15/* Maximum number of ACL entries over NFS */
  16#define NFS_ACL_MAX_ENTRIES     1024
  17
  18#define NFSACL_MAXWORDS         (2*(2+3*NFS_ACL_MAX_ENTRIES))
  19#define NFSACL_MAXPAGES         ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
  20                                 >> PAGE_SHIFT)
  21
  22#define NFS_ACL_MAX_ENTRIES_INLINE      (5)
  23#define NFS_ACL_INLINE_BUFSIZE  ((2*(2+3*NFS_ACL_MAX_ENTRIES_INLINE)) << 2)
  24
  25static inline unsigned int
  26nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
  27{
  28        unsigned int w = 16;
  29        w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
  30        if (acl_default)
  31                w += max((int)acl_default->a_count, 4) * 12;
  32        return w;
  33}
  34
  35extern int
  36nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
  37              struct posix_acl *acl, int encode_entries, int typeflag);
  38extern int
  39nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
  40              struct posix_acl **pacl);
  41
  42#endif  /* __LINUX_NFSACL_H */
  43