libc: Fix -Wunused-parameter.
[dragonfly.git] / lib / libc / net / getproto.c
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1/*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
9917f064 13 * 3. Neither the name of the University nor the names of its contributors
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
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28 *
29 * @(#)getproto.c 8.1 (Berkeley) 6/4/93
ed5d5720 30 * $FreeBSD: src/lib/libc/net/getproto.c,v 1.7 2007/01/09 00:28:02 imp Exp $
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31 */
32
984263bc 33#include <netdb.h>
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34#include <nsswitch.h>
35#include "netdb_private.h"
36#ifdef NS_CACHING
37#include "nscache.h"
38#endif
39#include "nss_tls.h"
984263bc 40
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41static const ns_src defaultsrc[] = {
42 { NSSRC_FILES, NS_SUCCESS },
43 { NULL, 0 }
44};
45
46#ifdef NS_CACHING
47extern int __proto_id_func(char *, size_t *, va_list, void *);
48extern int __proto_marshal_func(char *, size_t *, void *, va_list, void *);
49extern int __proto_unmarshal_func(char *, size_t, void *, va_list, void *);
50#endif
51
52static int
6d7019e6 53files_getprotobynumber(void *retval, void *mdata __unused, va_list ap)
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54{
55 struct protoent pe;
56 struct protoent_data *ped;
57 int error;
58
59 int number;
60 struct protoent *pptr;
61 char *buffer;
62 size_t buflen;
63 int *errnop;
64
65 number = va_arg(ap, int);
66 pptr = va_arg(ap, struct protoent *);
67 buffer = va_arg(ap, char *);
68 buflen = va_arg(ap, size_t);
69 errnop = va_arg(ap, int *);
70
71 if ((ped = __protoent_data_init()) == NULL) {
72 *errnop = -1;
73 return (NS_NOTFOUND);
74 }
75
76 __setprotoent_p(ped->stayopen, ped);
77 while ((error = __getprotoent_p(&pe, ped)) == 0)
78 if (pe.p_proto == number)
79 break;
80 if (!ped->stayopen)
81 __endprotoent_p(ped);
82 if (error != 0) {
83 *errnop = -1;
84 return (NS_NOTFOUND);
85 }
86 if (__copy_protoent(&pe, pptr, buffer, buflen) != 0) {
87 *errnop = -1;
88 return (NS_NOTFOUND);
89 }
90
91 *((struct protoent **)retval) = pptr;
92 return (NS_SUCCESS);
93}
94
95int
96getprotobynumber_r(int proto, struct protoent *pptr, char *buffer,
97 size_t buflen, struct protoent **result)
98{
99#ifdef NS_CACHING
100 static const nss_cache_info cache_info =
101 NS_COMMON_CACHE_INFO_INITIALIZER(
102 protocols, (void *)nss_lt_id,
103 __proto_id_func, __proto_marshal_func, __proto_unmarshal_func);
104#endif
105
106 static const ns_dtab dtab[] = {
107 { NSSRC_FILES, files_getprotobynumber, NULL },
108#ifdef NS_CACHING
109 NS_CACHE_CB(&cache_info)
110#endif
111 { NULL, NULL, NULL }
112 };
113 int rv, ret_errno;
114
115 ret_errno = 0;
116 *result = NULL;
117 rv = nsdispatch(result, dtab, NSDB_PROTOCOLS, "getprotobynumber_r",
118 defaultsrc, proto, pptr, buffer, buflen, &ret_errno);
119
120 if (rv == NS_SUCCESS)
121 return (0);
122 else
123 return (ret_errno);
124}
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125
126struct protoent *
076e5234 127getprotobynumber(int proto)
984263bc 128{
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129 struct protodata *pd;
130 struct protoent *rval;
984263bc 131
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132 if ((pd = __protodata_init()) == NULL)
133 return (NULL);
134 if (getprotobynumber_r(proto, &pd->proto, pd->data, sizeof(pd->data),
135 &rval) != 0)
136 return (NULL);
137 return (rval);
984263bc 138}