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/*
* Check decoding of rt_sigprocmask syscall.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2016-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <assert.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
static long
k_sigprocmask(const unsigned long how, void *const new_set,
void *const old_set, const unsigned long size)
{
return syscall(__NR_rt_sigprocmask, how, new_set, old_set, size);
}
static void
iterate(const char *const text, void *set, void *old, unsigned int size)
{
for (;;) {
if (k_sigprocmask(SIG_UNBLOCK, set, old, size)) {
if (size < sizeof(long))
tprintf("rt_sigprocmask(SIG_UNBLOCK"
", %p, %p, %u) = -1 EINVAL (%m)\n",
set, old, size);
else
tprintf("rt_sigprocmask(SIG_UNBLOCK"
", %s, %p, %u) = -1 EINVAL (%m)\n",
text, old, size);
} else {
tprintf("rt_sigprocmask(SIG_UNBLOCK, %s, [], %u)"
" = 0\n", text, size);
}
if (!size)
break;
size >>= 1;
set += size;
old += size;
}
}
int
main(void)
{
tprintf("%s", "");
const unsigned int big_size = 1024 / 8;
unsigned int set_size;
for (set_size = big_size; set_size; set_size >>= 1) {
if (!k_sigprocmask(SIG_SETMASK, NULL, NULL, set_size))
break;
tprintf("rt_sigprocmask(SIG_SETMASK, NULL, NULL, %u)"
" = -1 EINVAL (%m)\n", set_size);
}
if (!set_size)
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_SETMASK, NULL, NULL, %u) = 0\n",
set_size);
void *const k_set = tail_alloc(set_size);
void *const old_set = tail_alloc(set_size);
TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set);
memset(k_set, 0, set_size);
if (k_sigprocmask(SIG_SETMASK, k_set, NULL, set_size))
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_SETMASK, [], NULL, %u) = 0\n", set_size);
if (k_sigprocmask(SIG_UNBLOCK, k_set - set_size, old_set, set_size))
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[], [], %u) = 0\n", set_size);
assert(k_sigprocmask(SIG_SETMASK, k_set - set_size,
old_set, set_size << 1) == -1);
tprintf("rt_sigprocmask(SIG_SETMASK, %p, %p, %u) = -1 EINVAL (%m)\n",
k_set - set_size, old_set, set_size << 1);
iterate("~[]", k_set - set_size, old_set, set_size >> 1);
sigemptyset(libc_set);
sigaddset(libc_set, SIGHUP);
memcpy(k_set, libc_set, set_size);
if (k_sigprocmask(SIG_BLOCK, k_set, old_set, set_size))
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_BLOCK, [HUP], [], %u) = 0\n", set_size);
memset(libc_set, -1, sizeof(sigset_t));
sigdelset(libc_set, SIGHUP);
memcpy(k_set, libc_set, set_size);
if (k_sigprocmask(SIG_UNBLOCK, k_set, old_set, set_size))
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[HUP], [HUP], %u) = 0\n",
set_size);
sigdelset(libc_set, SIGKILL);
memcpy(k_set, libc_set, set_size);
if (k_sigprocmask(SIG_UNBLOCK, k_set, old_set, set_size))
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[HUP KILL], [HUP], %u) = 0\n",
set_size);
sigemptyset(libc_set);
sigaddset(libc_set, SIGHUP);
sigaddset(libc_set, SIGINT);
sigaddset(libc_set, SIGQUIT);
sigaddset(libc_set, SIGALRM);
sigaddset(libc_set, SIGTERM);
memcpy(k_set, libc_set, set_size);
if (k_sigprocmask(SIG_BLOCK, k_set, old_set, set_size))
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_BLOCK, %s, [HUP], %u) = 0\n",
"[HUP INT QUIT ALRM TERM]", set_size);
if (k_sigprocmask(SIG_SETMASK, NULL, old_set, set_size))
perror_msg_and_fail("rt_sigprocmask");
tprintf("rt_sigprocmask(SIG_SETMASK, NULL, %s, %u) = 0\n",
"[HUP INT QUIT ALRM TERM]", set_size);
assert(k_sigprocmask(SIG_SETMASK, k_set + (set_size >> 1), NULL,
set_size) == -1);
tprintf("rt_sigprocmask(SIG_SETMASK, %p, NULL, %u) = -1 EFAULT (%m)\n",
k_set + (set_size >> 1), set_size);
assert(k_sigprocmask(SIG_SETMASK, k_set, old_set + (set_size >> 1),
set_size) == -1);
tprintf("rt_sigprocmask(SIG_SETMASK, %s, %p, %u) = -1 EFAULT (%m)\n",
"[HUP INT QUIT ALRM TERM]",
old_set + (set_size >> 1), set_size);
tprintf("+++ exited with 0 +++\n");
return 0;
}
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