LXR linux/drivers/staging/lustre/lustre/include/lustre

   1/*
   2 * GPL HEADER START
   3 *
   4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 only,
   8 * as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful, but
  11 * WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 * General Public License version 2 for more details (a copy is included
  14 * in the LICENSE file that accompanied this code).
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * version 2 along with this program; If not, see
  18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19 *
  20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21 * CA 95054 USA or visit www.sun.com if you need additional information or
  22 * have any questions.
  23 *
  24 * GPL HEADER END
  25 */
  26/*
  27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  28 * Use is subject to license terms.
  29 */
  30/*
  31 * Copyright (c) 2011, 2012, Intel Corporation.
  32 */
  33/*
  34 * This file is part of Lustre, http://www.lustre.org/
  35 * Lustre is a trademark of Sun Microsystems, Inc.
  36 *
  37 * lustre/lustre/include/lustre_idmap.h
  38 *
  39 * MDS data structures.
  40 * See also lustre_idl.h for wire formats of requests.
  41 */
  42
  43#ifndef _LUSTRE_EACL_H
  44#define _LUSTRE_EACL_H
  45
  46/** \defgroup eacl eacl
  47 *
  48 * @{
  49 */
  50
  51#ifdef CONFIG_FS_POSIX_ACL
  52
  53#include <linux/posix_acl_xattr.h>
  54
  55typedef struct {
  56        __u16              e_tag;
  57        __u16              e_perm;
  58        __u32              e_id;
  59        __u32              e_stat;
  60} ext_acl_xattr_entry;
  61
  62typedef struct {
  63        __u32              a_count;
  64        ext_acl_xattr_entry     a_entries[0];
  65} ext_acl_xattr_header;
  66
  67#define CFS_ACL_XATTR_SIZE(count, prefix) \
  68        (sizeof(prefix ## _header) + (count) * sizeof(prefix ## _entry))
  69
  70#define CFS_ACL_XATTR_COUNT(size, prefix) \
  71        (((size) - sizeof(prefix ## _header)) / sizeof(prefix ## _entry))
  72
  73
  74extern ext_acl_xattr_header *
  75lustre_posix_acl_xattr_2ext(posix_acl_xattr_header *header, int size);
  76extern int
  77lustre_posix_acl_xattr_filter(posix_acl_xattr_header *header, int size,
  78                              posix_acl_xattr_header **out);
  79extern void
  80lustre_posix_acl_xattr_free(posix_acl_xattr_header *header, int size);
  81extern void
  82lustre_ext_acl_xattr_free(ext_acl_xattr_header *header);
  83extern int
  84lustre_acl_xattr_merge2posix(posix_acl_xattr_header *posix_header, int size,
  85                             ext_acl_xattr_header *ext_header,
  86                             posix_acl_xattr_header **out);
  87extern ext_acl_xattr_header *
  88lustre_acl_xattr_merge2ext(posix_acl_xattr_header *posix_header, int size,
  89                           ext_acl_xattr_header *ext_header);
  90
  91#endif /* CONFIG_FS_POSIX_ACL */
  92
  93/** @} eacl */
  94
  95#endif
  96