73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/* 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)
|