(M68*:*:R3V[567]*:*): Use uppercase 'M'.
[glibc.git] / inet / ether_hton.c
blob4e24fbb89f95d518c23e894905151f6f8707e1ce
1 /* Copyright (C) 1996 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <netinet/ether.h>
21 #include <netinet/if_ether.h>
22 #include <string.h>
24 #include "../nss/nsswitch.h"
26 /* Because the `ethers' lookup does not fit so well in the scheme so
27 we define a dummy struct here which helps us to use the available
28 functions. */
29 struct etherent
31 const char *e_name;
32 struct ether_addr e_addr;
36 /* Type of the lookup function we need here. */
37 typedef int (*lookup_function) (const char *, struct etherent *, char *, int);
39 /* The lookup function for the first entry of this service. */
40 extern int __nss_ethers_lookup (service_user **nip, const char *name,
41 void **fctp);
44 int
45 ether_hostton (const char *hostname, struct ether_addr *addr)
47 static service_user *startp = NULL;
48 static lookup_function start_fct;
49 service_user *nip;
50 lookup_function fct;
51 int no_more;
52 enum nss_status status = NSS_STATUS_UNAVAIL;
53 struct etherent etherent;
55 if (startp == NULL)
57 no_more = __nss_ethers_lookup (&nip, "gethostton_r", (void **) &fct);
58 if (no_more)
59 startp = (service_user *) -1;
60 else
62 startp = nip;
63 start_fct = fct;
66 else
68 fct = start_fct;
69 no_more = (nip = startp) == (service_user *) -1;
72 while (no_more == 0)
74 char buffer[1024];
76 status = (*fct) (hostname, &etherent, buffer, sizeof buffer);
78 no_more = __nss_next (&nip, "gethostton_r", (void **) &fct, status, 0);
81 if (status == NSS_STATUS_SUCCESS)
82 memcpy (addr, etherent.e_addr.ether_addr_octet,
83 sizeof (struct ether_addr));
85 return status == NSS_STATUS_SUCCESS ? 0 : -1;