linux/include/linux/nfsacl.h
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   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
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