1/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <netdb.h>
20#include <stdlib.h>
21#include <libc-lock.h>
22
23/* Static buffer for return value. We allocate it when needed. */
24libc_freeres_ptr (static char *buffer);
25/* All three strings should fit in a block of 1kB size. */
26#define BUFSIZE 1024
27
28
29
30static void
31allocate (void)
32{
33 buffer = (char *) malloc (BUFSIZE);
34}
35
36int
37getnetgrent (char **hostp, char **userp, char **domainp)
38{
39 __libc_once_define (static, once);
40 __libc_once (once, allocate);
41
42 if (buffer == NULL)
43 {
44 __set_errno (ENOMEM);
45 return -1;
46 }
47
48 return __getnetgrent_r (hostp, userp, domainp, buffer, BUFSIZE);
49}
50