1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/* Copyright (C) 1991, 1996, 1997 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <ctype.h>
#include <errno.h>
#include <grp.h>
#include <stdio.h>
/* Define a line parsing function using the common code
used in the nss_files module. */
#define STRUCTURE group
#define ENTNAME grent
struct grent_data {};
#define TRAILING_LIST_MEMBER gr_mem
#define TRAILING_LIST_SEPARATOR_P(c) ((c) == ',')
#include <nss/nss_files/files-parse.c>
LINE_PARSER
(,
STRING_FIELD (result->gr_name, ISCOLON, 0);
if (line[0] == '\0'
&& (result->gr_name[0] == '+' || result->gr_name[0] == '-'))
{
result->gr_passwd = NULL;
result->gr_gid = 0;
}
else
{
STRING_FIELD (result->gr_passwd, ISCOLON, 0);
if (result->gr_name[0] == '+' || result->gr_name[0] == '-')
INT_FIELD_MAYBE_NULL (result->gr_gid, ISCOLON, 0, 10, , 0)
else
INT_FIELD (result->gr_gid, ISCOLON, 0, 10,)
}
)
/* Read one entry from the given stream. */
int
__fgetgrent_r (FILE *stream, struct group *resbuf, char *buffer, size_t buflen,
struct group **result)
{
char *p;
int parse_result;
do
{
p = fgets (buffer, buflen, stream);
if (p == NULL)
{
*result = NULL;
return errno;
}
/* Skip leading blanks. */
while (isspace (*p))
++p;
} while (*p == '\0' || *p == '#' /* Ignore empty and comment lines. */
/* Parse the line. If it is invalid, loop to
get the next line of the file to parse. */
|| ! (parse_result = parse_line (p, resbuf,
(void *) buffer, buflen,
__errno_location ())));
if (parse_result == -1)
{
/* The parser ran out of space. */
*result = NULL;
return errno;
}
*result = resbuf;
return 0;
}
weak_alias (__fgetgrent_r, fgetgrent_r)
|
