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1da177e4 LT |
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 | ||
a81184c1 JSR |
40 | #include <linux/types.h> |
41 | ||
1da177e4 LT |
42 | /* XXX from bits/utmp.h */ |
43 | #define IDMAP_NAMESZ 128 | |
44 | ||
45 | #define IDMAP_TYPE_USER 0 | |
46 | #define IDMAP_TYPE_GROUP 1 | |
47 | ||
48 | #define IDMAP_CONV_IDTONAME 0 | |
49 | #define IDMAP_CONV_NAMETOID 1 | |
50 | ||
51 | #define IDMAP_STATUS_INVALIDMSG 0x01 | |
52 | #define IDMAP_STATUS_AGAIN 0x02 | |
53 | #define IDMAP_STATUS_LOOKUPFAIL 0x04 | |
54 | #define IDMAP_STATUS_SUCCESS 0x08 | |
55 | ||
56 | struct idmap_msg { | |
57 | __u8 im_type; | |
58 | __u8 im_conv; | |
59 | char im_name[IDMAP_NAMESZ]; | |
60 | __u32 im_id; | |
61 | __u8 im_status; | |
62 | }; | |
63 | ||
64 | #ifdef __KERNEL__ | |
65 | ||
66 | /* Forward declaration to make this header independent of others */ | |
adfa6f98 | 67 | struct nfs_client; |
e4fd72a1 | 68 | struct nfs_server; |
6926afd1 TM |
69 | struct nfs_fattr; |
70 | struct nfs4_string; | |
1da177e4 | 71 | |
955a857e BS |
72 | #ifdef CONFIG_NFS_USE_NEW_IDMAPPER |
73 | ||
74 | int nfs_idmap_init(void); | |
75 | void nfs_idmap_quit(void); | |
76 | ||
77 | static inline int nfs_idmap_new(struct nfs_client *clp) | |
78 | { | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static inline void nfs_idmap_delete(struct nfs_client *clp) | |
83 | { | |
84 | } | |
85 | ||
86 | #else /* CONFIG_NFS_USE_NEW_IDMAPPER not set */ | |
87 | ||
88 | static inline int nfs_idmap_init(void) | |
89 | { | |
90 | return 0; | |
91 | } | |
92 | ||
93 | static inline void nfs_idmap_quit(void) | |
94 | { | |
95 | } | |
96 | ||
b7162792 | 97 | int nfs_idmap_new(struct nfs_client *); |
adfa6f98 | 98 | void nfs_idmap_delete(struct nfs_client *); |
1da177e4 | 99 | |
955a857e BS |
100 | #endif /* CONFIG_NFS_USE_NEW_IDMAPPER */ |
101 | ||
6926afd1 TM |
102 | void nfs_fattr_init_names(struct nfs_fattr *fattr, |
103 | struct nfs4_string *owner_name, | |
104 | struct nfs4_string *group_name); | |
105 | void nfs_fattr_free_names(struct nfs_fattr *); | |
106 | void nfs_fattr_map_and_free_names(struct nfs_server *, struct nfs_fattr *); | |
107 | ||
e4fd72a1 TM |
108 | int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, __u32 *); |
109 | int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, __u32 *); | |
110 | int nfs_map_uid_to_name(const struct nfs_server *, __u32, char *, size_t); | |
111 | int nfs_map_gid_to_group(const struct nfs_server *, __u32, char *, size_t); | |
58df095b TM |
112 | |
113 | extern unsigned int nfs_idmap_cache_timeout; | |
1da177e4 LT |
114 | #endif /* __KERNEL__ */ |
115 | ||
116 | #endif /* NFS_IDMAP_H */ |