4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/lustre/include/lustre_idmap.h
38 * MDS data structures.
39 * See also lustre_idl.h for wire formats of requests.
42 #ifndef _LUSTRE_IDMAP_H
43 #define _LUSTRE_IDMAP_H
45 /** \defgroup idmap idmap
50 #include <libcfs/libcfs.h>
52 #define CFS_NGROUPS_PER_BLOCK ((int)(PAGE_SIZE / sizeof(gid_t)))
54 #define CFS_GROUP_AT(gi, i) \
55 ((gi)->blocks[(i) / CFS_NGROUPS_PER_BLOCK][(i) % CFS_NGROUPS_PER_BLOCK])
60 extern void lustre_groups_from_list(struct group_info *ginfo, gid_t *glist);
61 extern void lustre_groups_sort(struct group_info *group_info);
62 extern int lustre_in_group_p(struct lu_ucred *mu, gid_t grp);