87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/*
|
|
* Check decoding of signalfd4 syscall.
|
|
*
|
|
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "tests.h"
|
|
#include <fcntl.h>
|
|
#include <asm/unistd.h>
|
|
|
|
#if defined __NR_rt_sigprocmask \
|
|
&& defined HAVE_SYS_SIGNALFD_H \
|
|
&& defined HAVE_SIGNALFD \
|
|
&& defined O_CLOEXEC
|
|
|
|
# include <signal.h>
|
|
# include <stdio.h>
|
|
# include <unistd.h>
|
|
# include <sys/signalfd.h>
|
|
|
|
static unsigned int
|
|
get_sigset_size(void)
|
|
{
|
|
const unsigned int big_size = 1024 / 8;
|
|
unsigned int set_size;
|
|
|
|
for (set_size = big_size; set_size; set_size >>= 1) {
|
|
if (!syscall(__NR_rt_sigprocmask, SIG_SETMASK,
|
|
NULL, NULL, set_size))
|
|
break;
|
|
}
|
|
|
|
if (!set_size)
|
|
perror_msg_and_fail("rt_sigprocmask");
|
|
|
|
return set_size;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
const char *const sigs = SIGUSR2 < SIGCHLD ? "USR2 CHLD" : "CHLD USR2";
|
|
const unsigned int size = get_sigset_size();
|
|
|
|
sigset_t mask;
|
|
sigemptyset(&mask);
|
|
sigaddset(&mask, SIGUSR2);
|
|
sigaddset(&mask, SIGCHLD);
|
|
|
|
int fd = signalfd(-1, &mask, O_CLOEXEC | O_NONBLOCK);
|
|
printf("signalfd4(-1, [%s], %u, SFD_CLOEXEC|SFD_NONBLOCK) = %s\n",
|
|
sigs, size, sprintrc(fd));
|
|
|
|
puts("+++ exited with 0 +++");
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("__NR_rt_sigprocmask && HAVE_SYS_SIGNALFD_H"
|
|
" && HAVE_SIGNALFD && O_CLOEXEC")
|
|
|
|
#endif
|