1/*
2 * fs/nfs/nfs4idmap.h
3 *
4 *  UID and GID to name mapping for clients.
5 *
6 *  Copyright (c) 2002 The Regents of the University of Michigan.
7 *  All rights reserved.
8 *
9 *  Marius Aamodt Eriksen <marius@umich.edu>
10 *
11 *  Redistribution and use in source and binary forms, with or without
12 *  modification, are permitted provided that the following conditions
13 *  are met:
14 *
15 *  1. Redistributions of source code must retain the above copyright
16 *     notice, this list of conditions and the following disclaimer.
17 *  2. Redistributions in binary form must reproduce the above copyright
18 *     notice, this list of conditions and the following disclaimer in the
19 *     documentation and/or other materials provided with the distribution.
20 *  3. Neither the name of the University nor the names of its
21 *     contributors may be used to endorse or promote products derived
22 *     from this software without specific prior written permission.
23 *
24 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
25 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
32 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
33 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
34 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36#ifndef NFS_IDMAP_H
37#define NFS_IDMAP_H
38
39#include <linux/uidgid.h>
40#include <uapi/linux/nfs_idmap.h>
41
42
43/* Forward declaration to make this header independent of others */
44struct nfs_client;
45struct nfs_server;
46struct nfs_fattr;
47struct nfs4_string;
48
49int nfs_idmap_init(void);
50void nfs_idmap_quit(void);
51int nfs_idmap_new(struct nfs_client *);
52void nfs_idmap_delete(struct nfs_client *);
53
54void nfs_fattr_init_names(struct nfs_fattr *fattr,
55		struct nfs4_string *owner_name,
56		struct nfs4_string *group_name);
57void nfs_fattr_free_names(struct nfs_fattr *);
58void nfs_fattr_map_and_free_names(struct nfs_server *, struct nfs_fattr *);
59
60int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, kuid_t *);
61int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, kgid_t *);
62int nfs_map_uid_to_name(const struct nfs_server *, kuid_t, char *, size_t);
63int nfs_map_gid_to_group(const struct nfs_server *, kgid_t, char *, size_t);
64
65int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res);
66
67extern unsigned int nfs_idmap_cache_timeout;
68#endif /* NFS_IDMAP_H */
69