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/* Copyright (C) 2017-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <libc-lock.h>
#include "nisdomain.h"
#define MAXDOMAINNAMELEN 1024
static char domainname[MAXDOMAINNAMELEN];
__libc_lock_define_initialized (static, domainname_lock)
int
__nss_get_default_domain (char **outdomain)
{
int result = 0;
*outdomain = NULL;
__libc_lock_lock (domainname_lock);
if (domainname[0] != '\0')
{
if (getdomainname (domainname, MAXDOMAINNAMELEN) < 0)
result = errno;
else if (strcmp (domainname, "(none)") == 0)
{
/* If domainname is not set, some systems will return "(none)" */
domainname[0] = '\0';
result = ENOENT;
}
else
*outdomain = domainname;
}
else
*outdomain = domainname;
__libc_lock_unlock (domainname_lock);
return result;
}
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