blob: 345ec2ed5775d1aae76f8ad3f136d913125ca991 (
plain)
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
|
#include <stdio.h>
#include <grp.h>
#include <stdlib.h>
#define CL ':'
#define CM ','
#define NL '\n'
#define MAXGRP 100
static char GROUP[] = "/etc/group";
static FILE *grf = NULL;
static char line[BUFSIZ+1];
static struct group group;
static char *gr_mem[MAXGRP];
setgrent()
{
if( !grf )
grf = fopen( GROUP, "r" );
else
rewind( grf );
}
endgrent()
{
if( grf ){
fclose( grf );
grf = NULL;
}
}
static char *
grskip(register char *p, register c)
{
while( *p && *p != c ) ++p;
if( *p ) *p++ = 0;
return( p );
}
struct group *
getgrent()
{
register char *p, **q;
if( !grf && !(grf = fopen( GROUP, "r" )) )
return(NULL);
if( !(p = fgets( line, BUFSIZ, grf )) )
return(NULL);
group.gr_name = p;
p = grskip(p,CL); /* passwd */
group.gr_gid = atoi(p = grskip(p,CL));
group.gr_mem = gr_mem;
p = grskip(p,CL);
grskip(p,NL);
q = gr_mem;
while( *p ){
*q++ = p;
p = grskip(p,CM);
}
*q = NULL;
return( &group );
}
|
