118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/*
|
|
* Check decoding of sigsuspend syscall.
|
|
*
|
|
* Copyright (c) 2017 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 <asm/unistd.h>
|
|
|
|
#ifdef __NR_sigsuspend
|
|
|
|
# include <assert.h>
|
|
# include <errno.h>
|
|
# include <signal.h>
|
|
# include <stdio.h>
|
|
# include <stdint.h>
|
|
# include <string.h>
|
|
# include <unistd.h>
|
|
|
|
# ifdef MIPS
|
|
# define SIGNAL_MASK_BY_REF 1
|
|
# else
|
|
# define SIGNAL_MASK_BY_REF 0
|
|
# endif
|
|
|
|
static long
|
|
k_sigsuspend(const kernel_ulong_t arg1,
|
|
const kernel_ulong_t arg2,
|
|
const kernel_ulong_t arg3)
|
|
{
|
|
return syscall(__NR_sigsuspend, arg1, arg2, arg3);
|
|
}
|
|
|
|
static int signo;
|
|
static const char *sigtxt[] = {
|
|
[SIGUSR1] = "USR1",
|
|
[SIGUSR2] = "USR2"
|
|
};
|
|
|
|
static void
|
|
handler(int i)
|
|
{
|
|
signo = i;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
union {
|
|
sigset_t libc_mask;
|
|
unsigned long old_mask;
|
|
} u;
|
|
|
|
sigemptyset(&u.libc_mask);
|
|
sigaddset(&u.libc_mask, SIGUSR1);
|
|
sigaddset(&u.libc_mask, SIGUSR2);
|
|
if (sigprocmask(SIG_SETMASK, &u.libc_mask, NULL))
|
|
perror_msg_and_fail("sigprocmask");
|
|
|
|
const struct sigaction sa = { .sa_handler = handler };
|
|
if (sigaction(SIGUSR1, &sa, NULL) || sigaction(SIGUSR2, &sa, NULL))
|
|
perror_msg_and_fail("sigaction");
|
|
|
|
raise(SIGUSR1);
|
|
raise(SIGUSR2);
|
|
|
|
u.old_mask = -1UL;
|
|
sigdelset(&u.libc_mask, SIGUSR1);
|
|
const unsigned long mask1 = u.old_mask;
|
|
|
|
u.old_mask = -1UL;
|
|
sigdelset(&u.libc_mask, SIGUSR2);
|
|
const unsigned long mask2 = u.old_mask;
|
|
|
|
#if SIGNAL_MASK_BY_REF
|
|
k_sigsuspend((uintptr_t) &mask1, 0xdeadbeef, (uintptr_t) &mask2);
|
|
#else
|
|
k_sigsuspend(mask1, 0xdeadbeef, mask2);
|
|
#endif
|
|
if (EINTR != errno)
|
|
perror_msg_and_skip("sigsuspend");
|
|
|
|
printf("sigsuspend(~[%s]) = ? ERESTARTNOHAND"
|
|
" (To be restarted if no handler)\n", sigtxt[signo]);
|
|
|
|
puts("+++ exited with 0 +++");
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("__NR_sigsuspend")
|
|
|
|
#endif
|