147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
/*
|
|
* This file is part of rt_sigsuspend strace test.
|
|
*
|
|
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
|
|
* Copyright (c) 2016-2018 The strace developers.
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "tests.h"
|
|
#include <asm/unistd.h>
|
|
|
|
#ifdef __NR_rt_sigsuspend
|
|
|
|
# include <assert.h>
|
|
# include <errno.h>
|
|
# include <signal.h>
|
|
# include <stdio.h>
|
|
# include <stdint.h>
|
|
# include <string.h>
|
|
# include <unistd.h>
|
|
|
|
static long
|
|
k_sigsuspend(const sigset_t *const set, const unsigned long size)
|
|
{
|
|
return syscall(__NR_rt_sigsuspend, set, size);
|
|
}
|
|
|
|
static void
|
|
iterate(const char *const text, const int sig,
|
|
const void *const set, unsigned int size)
|
|
{
|
|
const void *mask;
|
|
|
|
for (mask = set;; size >>= 1, mask += size) {
|
|
raise(sig);
|
|
assert(k_sigsuspend(mask, size) == -1);
|
|
if (EINTR == errno) {
|
|
tprintf("rt_sigsuspend(%s, %u) = ? ERESTARTNOHAND"
|
|
" (To be restarted if no handler)\n",
|
|
text, size);
|
|
} else {
|
|
if (size < sizeof(long))
|
|
tprintf("rt_sigsuspend(%p, %u)"
|
|
" = -1 EINVAL (%m)\n",
|
|
mask, size);
|
|
else
|
|
tprintf("rt_sigsuspend(%s, %u)"
|
|
" = -1 EINVAL (%m)\n",
|
|
set == mask ? text : "~[]", size);
|
|
}
|
|
if (!size)
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
handler(int signo)
|
|
{
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
tprintf("%s", "");
|
|
|
|
const unsigned int big_size = 1024 / 8;
|
|
void *k_set = tail_alloc(big_size);
|
|
memset(k_set, 0, big_size);
|
|
|
|
TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set);
|
|
sigemptyset(libc_set);
|
|
sigaddset(libc_set, SIGUSR1);
|
|
if (sigprocmask(SIG_SETMASK, libc_set, NULL))
|
|
perror_msg_and_fail("sigprocmask");
|
|
|
|
const struct sigaction sa = {
|
|
.sa_handler = handler
|
|
};
|
|
if (sigaction(SIGUSR1, &sa, NULL))
|
|
perror_msg_and_fail("sigaction");
|
|
|
|
raise(SIGUSR1);
|
|
unsigned int set_size = big_size;
|
|
for (; set_size; set_size >>= 1, k_set += set_size) {
|
|
assert(k_sigsuspend(k_set, set_size) == -1);
|
|
if (EINTR == errno)
|
|
break;
|
|
tprintf("rt_sigsuspend(%p, %u) = -1 EINVAL (%m)\n",
|
|
k_set, set_size);
|
|
}
|
|
if (!set_size)
|
|
perror_msg_and_fail("rt_sigsuspend");
|
|
tprintf("rt_sigsuspend([], %u) = ? ERESTARTNOHAND"
|
|
" (To be restarted if no handler)\n", set_size);
|
|
|
|
sigemptyset(libc_set);
|
|
sigaddset(libc_set, SIGUSR2);
|
|
memcpy(k_set, libc_set, set_size);
|
|
raise(SIGUSR1);
|
|
assert(k_sigsuspend(k_set, set_size) == -1);
|
|
assert(EINTR == errno);
|
|
tprintf("rt_sigsuspend([USR2], %u) = ? ERESTARTNOHAND"
|
|
" (To be restarted if no handler)\n", set_size);
|
|
|
|
sigaddset(libc_set, SIGHUP);
|
|
memcpy(k_set, libc_set, set_size);
|
|
raise(SIGUSR1);
|
|
assert(k_sigsuspend(k_set, set_size) == -1);
|
|
assert(EINTR == errno);
|
|
tprintf("rt_sigsuspend([HUP USR2], %u) = ? ERESTARTNOHAND"
|
|
" (To be restarted if no handler)\n", set_size);
|
|
|
|
sigaddset(libc_set, SIGINT);
|
|
memcpy(k_set, libc_set, set_size);
|
|
raise(SIGUSR1);
|
|
assert(k_sigsuspend(k_set, set_size) == -1);
|
|
assert(EINTR == errno);
|
|
tprintf("rt_sigsuspend([HUP INT USR2], %u) = ? ERESTARTNOHAND"
|
|
" (To be restarted if no handler)\n", set_size);
|
|
|
|
memset(libc_set, -1, sizeof(*libc_set));
|
|
sigdelset(libc_set, SIGUSR1);
|
|
memcpy(k_set, libc_set, set_size);
|
|
raise(SIGUSR1);
|
|
assert(k_sigsuspend(k_set, set_size) == -1);
|
|
assert(EINTR == errno);
|
|
tprintf("rt_sigsuspend(~[USR1], %u) = ? ERESTARTNOHAND"
|
|
" (To be restarted if no handler)\n", set_size);
|
|
|
|
assert(k_sigsuspend(k_set - set_size, set_size << 1) == -1);
|
|
tprintf("rt_sigsuspend(%p, %u) = -1 EINVAL (%m)\n",
|
|
k_set - set_size, set_size << 1);
|
|
|
|
iterate("~[USR1]", SIGUSR1, k_set, set_size >> 1);
|
|
|
|
tprintf("+++ exited with 0 +++\n");
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("__NR_rt_sigsuspend")
|
|
|
|
#endif
|