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/*
* Check decoding of prctl operations without arguments and return code parsing:
* PR_GET_KEEPCAPS, PR_GET_SECCOMP, PR_GET_TIMERSLACK, PR_GET_TIMING,
* PR_TASK_PERF_EVENTS_DISABLE, and PR_TASK_PERF_EVENTS_ENABLE.
*
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
* 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>
#if defined __NR_prctl
# include <stdio.h>
# include <unistd.h>
# include <linux/prctl.h>
int
main(void)
{
static const kernel_ulong_t bogus_op_bits =
(kernel_ulong_t) 0xbadc0ded00000000ULL;
static const kernel_ulong_t bogus_arg =
(kernel_ulong_t) 0xfacefeeddeadbeefULL;
static const struct {
kernel_ulong_t val;
const char *str;
} options[] = {
{ 7, "PR_GET_KEEPCAPS" },
{ 13, "PR_GET_TIMING" },
{ 21, "PR_GET_SECCOMP" },
{ 30, "PR_GET_TIMERSLACK" },
{ 31, "PR_TASK_PERF_EVENTS_DISABLE" },
{ 32, "PR_TASK_PERF_EVENTS_ENABLE" },
};
TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, ptr);
unsigned int i;
for (i = 0; i < ARRAY_SIZE(options); i++) {
long rc = syscall(__NR_prctl, options[i].val | bogus_op_bits,
bogus_arg);
printf("prctl(%s) = %s\n", options[i].str, sprintrc(rc));
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_prctl")
#endif
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