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1 | /* Copyright (C) 1996-2016 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 | <http://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. */ | |
24 | libc_freeres_ptr (static char *buffer); | |
25 | /* All three strings should fit in a block of 1kB size. */ | |
26 | #define BUFSIZE 1024 | |
27 | ||
28 | ||
29 | ||
30 | static void | |
31 | allocate (void) | |
32 | { | |
33 | buffer = (char *) malloc (BUFSIZE); | |
34 | } | |
35 | ||
36 | int | |
37 | getnetgrent (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 | } |