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
|
/* Copyright (C) 1998, 2000 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 <sys/types.h>
#include <unistd.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <linux/posix_types.h>
#include "kernel-features.h"
extern int __syscall_setregid (__kernel_gid_t, __kernel_gid_t);
#ifdef __NR_setregid32
extern int __syscall_setregid32 (__kernel_gid32_t, __kernel_gid32_t);
# if __ASSUME_32BITUIDS == 0
/* This variable is shared with all files that need to check for 32bit
uids. */
extern int __libc_missing_32bit_uids;
# endif
#endif /* __NR_setregid32 */
int
__setregid (gid_t rgid, gid_t egid)
{
#if __ASSUME_32BITUIDS > 0
return INLINE_SYSCALL (setregid32, 2, rgid, egid);
#else
# ifdef __NR_setregid32
if (!__libc_missing_32bit_uids)
{
int result;
int saved_errno = errno;
result = INLINE_SYSCALL (setregid32, 2, rgid, egid);
if (result == 0 || errno != ENOSYS)
return result;
__set_errno (saved_errno);
__libc_missing_32bit_uids = 1;
}
# endif /* __NR_setregid32 */
if (((rgid + 1) > (gid_t) ((__kernel_gid_t) -1U))
|| ((egid + 1) > (gid_t) ((__kernel_gid_t) -1U)))
{
__set_errno (EINVAL);
return -1;
}
return INLINE_SYSCALL (setregid, 2, rgid, egid);
#endif
}
weak_alias (__setregid, setregid)
|
