1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
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 <md_object.h>
52 #define CFS_NGROUPS_PER_BLOCK ((int)(CFS_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])
58 CFS_IC_NOTHING = 0, /* convert nothing */
59 CFS_IC_ALL = 1, /* convert all items */
60 CFS_IC_MAPPED = 2, /* convert mapped uid/gid */
61 CFS_IC_UNMAPPED = 3 /* convert unmapped uid/gid */
64 #define CFS_IDMAP_NOTFOUND (-1)
66 #define CFS_IDMAP_HASHSIZE 32
68 enum lustre_idmap_idx {
76 struct lustre_idmap_table {
77 cfs_spinlock_t lit_lock;
78 cfs_list_t lit_idmaps[CFS_IDMAP_N_HASHES][CFS_IDMAP_HASHSIZE];
81 extern void lustre_groups_from_list(cfs_group_info_t *ginfo, gid_t *glist);
82 extern void lustre_groups_sort(cfs_group_info_t *group_info);
83 extern int lustre_in_group_p(struct md_ucred *mu, gid_t grp);
85 extern int lustre_idmap_add(struct lustre_idmap_table *t,
86 uid_t ruid, uid_t luid,
87 gid_t rgid, gid_t lgid);
88 extern int lustre_idmap_del(struct lustre_idmap_table *t,
89 uid_t ruid, uid_t luid,
90 gid_t rgid, gid_t lgid);
91 extern int lustre_idmap_lookup_uid(struct md_ucred *mu,
92 struct lustre_idmap_table *t,
93 int reverse, uid_t uid);
94 extern int lustre_idmap_lookup_gid(struct md_ucred *mu,
95 struct lustre_idmap_table *t,
96 int reverse, gid_t gid);
97 extern struct lustre_idmap_table *lustre_idmap_init(void);
98 extern void lustre_idmap_fini(struct lustre_idmap_table *t);