glibc/inet/ether_hton.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

60 lines
1.8 KiB
C

/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <netinet/ether.h>
#include <netinet/if_ether.h>
#include <string.h>
#include "../nss/nsswitch.h"
/* Type of the lookup function we need here. */
typedef int (*lookup_function) (const char *, struct etherent *, char *, int,
int *);
int
ether_hostton (const char *hostname, struct ether_addr *addr)
{
nss_action_list nip;
union
{
lookup_function f;
void *ptr;
} fct;
int no_more;
enum nss_status status = NSS_STATUS_UNAVAIL;
struct etherent etherent;
no_more = __nss_ethers_lookup2 (&nip, "gethostton_r", NULL, &fct.ptr);
while (no_more == 0)
{
char buffer[1024];
status = (*fct.f) (hostname, &etherent, buffer, sizeof buffer, &errno);
no_more = __nss_next2 (&nip, "gethostton_r", NULL, &fct.ptr, status, 0);
}
if (status == NSS_STATUS_SUCCESS)
memcpy (addr, etherent.e_addr.ether_addr_octet,
sizeof (struct ether_addr));
return status == NSS_STATUS_SUCCESS ? 0 : -1;
}