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
|
/* Copyright (C) 1997, 1998 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 <errno.h>
#include <grp.h>
#include <unistd.h>
#include <sys/types.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <linux/posix_types.h>
extern int __syscall_setgroups __P ((int, const __kernel_gid_t *));
/* Set the group set for the current user to GROUPS (N of them). For
Linux we must convert the array of groups into the format that the
kernel expects. */
int
setgroups (n, groups)
size_t n;
const gid_t *groups;
{
if (n < 0 || n > __sysconf (_SC_NGROUPS_MAX))
{
__set_errno (EINVAL);
return -1;
}
else if
{
size_t i;
__kernel_gid_t kernel_groups[n];
for (i = 0; i < n; i++)
{
kernel_groups[i] = groups[i];
if (groups[i] != (gid_t) ((__kernel_gid_t) groups[i]))
{
__set_errno (EINVAL);
return -1;
}
}
return INLINE_SYSCALL (setgroups, 2, n, kernel_groups);
}
}
|
