1 /*
2 * include/linux/nfs_idmap.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
37 #ifndef NFS_IDMAP_H
38 #define NFS_IDMAP_H
39
40 /* XXX from bits/utmp.h */
41 #define IDMAP_NAMESZ 128
42
43 #define IDMAP_TYPE_USER 0
44 #define IDMAP_TYPE_GROUP 1
45
46 #define IDMAP_CONV_IDTONAME 0
47 #define IDMAP_CONV_NAMETOID 1
48
49 #define IDMAP_STATUS_INVALIDMSG 0x01
50 #define IDMAP_STATUS_AGAIN 0x02
51 #define IDMAP_STATUS_LOOKUPFAIL 0x04
52 #define IDMAP_STATUS_SUCCESS 0x08
53
54 struct idmap_msg {
55 __u8 im_type;
56 __u8 im_conv;
57 char im_name[IDMAP_NAMESZ];
58 __u32 im_id;
59 __u8 im_status;
60 };
61
62 #ifdef __KERNEL__
63
64 /* Forward declaration to make this header independent of others */
65 struct nfs_client;
66
67 int nfs_idmap_new(struct nfs_client *);
68 void nfs_idmap_delete(struct nfs_client *);
69
70 int nfs_map_name_to_uid(struct nfs_client *, const char *, size_t, __u32 *);
71 int nfs_map_group_to_gid(struct nfs_client *, const char *, size_t, __u32 *);
72 int nfs_map_uid_to_name(struct nfs_client *, __u32, char *);
73 int nfs_map_gid_to_group(struct nfs_client *, __u32, char *);
74
75 extern unsigned int nfs_idmap_cache_timeout;
76 #endif /* __KERNEL__ */
77
78 #endif /* NFS_IDMAP_H */
79
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