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/*
* Check decoding of prctl PR_GET_UNALIGN/PR_SET_UNALIGN operations.
*
* Copyright (c) 2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <stdio.h>
#include <unistd.h>
#include <linux/prctl.h>
int
main(void)
{
TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, unalign);
long rc;
prctl_marker();
rc = syscall(__NR_prctl, PR_SET_UNALIGN, PR_UNALIGN_NOPRINT | PR_UNALIGN_SIGBUS);
printf("prctl(PR_SET_UNALIGN, PR_UNALIGN_NOPRINT|PR_UNALIGN_SIGBUS) = %s\n",
sprintrc(rc));
rc = syscall(__NR_prctl, PR_SET_UNALIGN, 0xff00);
printf("prctl(PR_SET_UNALIGN, %#llx /* PR_UNALIGN_??? */) = %s\n",
(unsigned long long) 0xff00, sprintrc(rc));
rc = syscall(__NR_prctl, PR_SET_UNALIGN, PR_UNALIGN_SIGBUS);
printf("prctl(PR_SET_UNALIGN, PR_UNALIGN_SIGBUS) = %s\n", sprintrc(rc));
rc = syscall(__NR_prctl, PR_GET_UNALIGN, unalign + 1);
printf("prctl(PR_GET_UNALIGN, %p) = %s\n", unalign + 1, sprintrc(rc));
rc = syscall(__NR_prctl, PR_GET_UNALIGN, NULL);
printf("prctl(PR_GET_UNALIGN, NULL) = %s\n", sprintrc(rc));
rc = syscall(__NR_prctl, PR_GET_UNALIGN, unalign);
if (rc)
printf("prctl(PR_GET_UNALIGN, %p) = %s\n", unalign, sprintrc(rc));
else
printf("prctl(PR_GET_UNALIGN, [PR_UNALIGN_SIGBUS]) = %s\n",
sprintrc(rc));
puts("+++ exited with 0 +++");
return 0;
}
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