1 /*
2  * setregid() for uClibc
3  *
4  * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
5  *
6  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
7  */
8 
9 #include <sys/syscall.h>
10 #include <unistd.h>
11 #include <bits/wordsize.h>
12 
13 
14 #if (__WORDSIZE == 32 && defined(__NR_setregid32)) || __WORDSIZE == 64
15 # ifdef __NR_setregid32
16 #  undef __NR_setregid
17 #  define __NR_setregid __NR_setregid32
18 # endif
19 
20 _syscall2(int, setregid, gid_t, rgid, gid_t, egid)
21 
22 #else
23 
24 # define __NR___syscall_setregid __NR_setregid
25 static __inline__ _syscall2(int, __syscall_setregid,
26 		__kernel_gid_t, rgid, __kernel_gid_t, egid)
27 
28 int setregid(gid_t rgid, gid_t egid)
29 {
30 	if (((rgid + 1) > (gid_t) ((__kernel_gid_t) - 1U))
31 		|| ((egid + 1) > (gid_t) ((__kernel_gid_t) - 1U))) {
32 		__set_errno(EINVAL);
33 		return -1;
34 	}
35 	return (__syscall_setregid(rgid, egid));
36 }
37 #endif
38 
39 libc_hidden_weak(setregid)
40