1/* Copyright (C) 1991-2020 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 <ctype.h>
19#include <errno.h>
20#include <grp.h>
21#include <stdio.h>
22
23/* Define a line parsing function using the common code
24 used in the nss_files module. */
25
26#define STRUCTURE group
27#define ENTNAME grent
28struct grent_data {};
29
30#define TRAILING_LIST_MEMBER gr_mem
31#define TRAILING_LIST_SEPARATOR_P(c) ((c) == ',')
32#include <nss/nss_files/files-parse.c>
33LINE_PARSER
34(,
35 STRING_FIELD (result->gr_name, ISCOLON, 0);
36 if (line[0] == '\0'
37 && (result->gr_name[0] == '+' || result->gr_name[0] == '-'))
38 {
39 result->gr_passwd = NULL;
40 result->gr_gid = 0;
41 }
42 else
43 {
44 STRING_FIELD (result->gr_passwd, ISCOLON, 0);
45 if (result->gr_name[0] == '+' || result->gr_name[0] == '-')
46 INT_FIELD_MAYBE_NULL (result->gr_gid, ISCOLON, 0, 10, , 0)
47 else
48 INT_FIELD (result->gr_gid, ISCOLON, 0, 10,)
49 }
50 )
51
52
53/* Read one entry from the given stream. */
54int
55__fgetgrent_r (FILE *stream, struct group *resbuf, char *buffer, size_t buflen,
56 struct group **result)
57{
58 int ret = __nss_fgetent_r (stream, resbuf, buffer, buflen, parse_line);
59 if (ret == 0)
60 *result = resbuf;
61 else
62 *result = NULL;
63 return ret;
64}
65weak_alias (__fgetgrent_r, fgetgrent_r)
66