mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 13:30:06 +00:00
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* Copyright (C) 2007, 2008, 2009 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <sys/signalfd.h>
|
|
#include <sysdep.h>
|
|
#include <kernel-features.h>
|
|
|
|
|
|
int
|
|
signalfd (int fd, const sigset_t *mask, int flags)
|
|
{
|
|
#ifdef __NR_signalfd4
|
|
int res = INLINE_SYSCALL (signalfd4, 4, fd, mask, _NSIG / 8, flags);
|
|
# ifndef __ASSUME_SIGNALFD4
|
|
if (res != -1 || errno != ENOSYS)
|
|
# endif
|
|
return res;
|
|
#endif
|
|
|
|
#ifndef __ASSUME_SIGNALFD4
|
|
/* The old system call has no flag parameter which is bad. So we have
|
|
to wait until we have to support to pass additional values to the
|
|
kernel (sys_indirect) before implementing setting flags like
|
|
O_NONBLOCK etc. */
|
|
if (flags != 0)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
# ifdef __NR_signalfd
|
|
return INLINE_SYSCALL (signalfd, 3, fd, mask, _NSIG / 8);
|
|
# else
|
|
__set_errno (ENOSYS);
|
|
return -1;
|
|
# endif
|
|
#elif !defined __NR_signalfd4
|
|
# error "__ASSUME_SIGNALFD4 defined but not __NR_signalfd4"
|
|
#endif
|
|
}
|