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#define NFS_ACL_PROGRAM 100227
  10
  11#define ACLPROC2_GETACL         1
  12#define ACLPROC2_SETACL         2
  13#define ACLPROC2_GETATTR        3
  14#define ACLPROC2_ACCESS         4
  15
  16#define ACLPROC3_GETACL         1
  17#define ACLPROC3_SETACL         2
  18
  19
  20/* Flags for the getacl/setacl mode */
  21#define NFS_ACL                 0x0001
  22#define NFS_ACLCNT              0x0002
  23#define NFS_DFACL               0x0004
  24#define NFS_DFACLCNT            0x0008
  25
  26/* Flag for Default ACL entries */
  27#define NFS_ACL_DEFAULT         0x1000
  28
  29#ifdef __KERNEL__
  30
  31#include <linux/posix_acl.h>
  32#include <linux/sunrpc/xdr.h>
  33
  34/* Maximum number of ACL entries over NFS */
  35#define NFS_ACL_MAX_ENTRIES     1024
  36
  37#define NFSACL_MAXWORDS         (2*(2+3*NFS_ACL_MAX_ENTRIES))
  38#define NFSACL_MAXPAGES         ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
  39                                 >> PAGE_SHIFT)
  40
  41#define NFS_ACL_MAX_ENTRIES_INLINE      (5)
  42#define NFS_ACL_INLINE_BUFSIZE  ((2*(2+3*NFS_ACL_MAX_ENTRIES_INLINE)) << 2)
  43
  44static inline unsigned int
  45nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
  46{
  47        unsigned int w = 16;
  48        w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
  49        if (acl_default)
  50                w += max((int)acl_default->a_count, 4) * 12;
  51        return w;
  52}
  53
  54extern int
  55nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
  56              struct posix_acl *acl, int encode_entries, int typeflag);
  57extern int
  58nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
  59              struct posix_acl **pacl);
  60
  61#endif /* __KERNEL__ */
  62#endif  /* __LINUX_NFSACL_H */
  63
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