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/*
* Check decoding of sgetmask and ssetmask syscalls.
*
* Copyright (c) 2017-2018 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2017-2019 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#if defined __NR_sgetmask && defined __NR_ssetmask
# include <errno.h>
# include <signal.h>
# include <stdio.h>
# include <stdint.h>
# include <string.h>
# include <unistd.h>
static long
k_sgetmask(void)
{
return syscall(__NR_sgetmask);
}
static long
k_ssetmask(const kernel_ulong_t arg)
{
return syscall(__NR_ssetmask, arg);
}
int
main(void)
{
union {
sigset_t libc_mask;
unsigned long old_mask;
} uset, uget;
long rc;
/*
* Block, reset, and raise SIGUSR1.
* If a subsequent ssetmask call fails to set the proper mask,
* the process will be terminated by SIGUSR1.
*/
sigemptyset(&uset.libc_mask);
sigaddset(&uset.libc_mask, SIGUSR1);
if (sigprocmask(SIG_SETMASK, &uset.libc_mask, NULL))
perror_msg_and_fail("sigprocmask");
if (signal(SIGUSR1, SIG_DFL) == SIG_ERR)
perror_msg_and_fail("signal");
raise(SIGUSR1);
sigaddset(&uset.libc_mask, SIGUSR2);
rc = k_ssetmask((kernel_ulong_t) 0xfacefeed00000000ULL | uset.old_mask);
if (rc == -1L) {
printf("ssetmask([USR1 USR2]) = %s\n", sprintrc(rc));
} else {
printf("ssetmask([USR1 USR2]) = %#lx (old mask [USR1])\n", rc);
/*
* Use a regular sigprocmask call to check the value
* returned by the ssetmask call being tested.
*/
if (sigprocmask(SIG_SETMASK, NULL, &uget.libc_mask))
perror_msg_and_fail("sigprocmask");
if (uset.old_mask != uget.old_mask)
error_msg_and_fail("sigprocmask returned %#lx"
" instead of %#lx",
uget.old_mask, uset.old_mask);
}
rc = k_sgetmask();
if (rc == -1L) {
printf("sgetmask() = %s\n", sprintrc(rc));
} else {
printf("sgetmask() = %#lx (mask [USR1 USR2])\n", rc);
if (uget.old_mask != (unsigned long) rc)
error_msg_and_fail("sigprocmask returned %#lx",
uget.old_mask);
if (sizeof(long) > 4) {
sigaddset(&uset.libc_mask, 32 + 27);
if (sigprocmask(SIG_SETMASK, &uset.libc_mask, NULL))
perror_msg_and_fail("sigprocmask");
rc = k_sgetmask();
printf("sgetmask() = %#lx"
" (mask [USR1 USR2 RT_27])\n", rc);
if (uset.old_mask != (unsigned long) rc)
error_msg_and_fail("sigprocmask set %#lx",
uset.old_mask);
}
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_sgetmask && __NR_ssetmask")
#endif
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