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/*
* Copyright (c) 2017-2019 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdint.h>
#include <stdio.h>
#include <sys/mman.h>
#include <unistd.h>
#include "scno.h"
static const char *errstr;
static long
k_madvise(const kernel_ulong_t addr,
const kernel_ulong_t length,
const kernel_ulong_t advice)
{
long rc = syscall(__NR_madvise, addr, length, advice);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
const unsigned long length = get_page_size();
void *const addr = tail_alloc(length);
long rc;
rc = madvise(addr, length, MADV_NORMAL);
printf("madvise(%p, %lu, MADV_NORMAL) = %s\n",
addr, length, sprintrc(rc));
static const kernel_ulong_t advice =
(kernel_ulong_t) 0xfacefeed00000000ULL | MADV_RANDOM;
rc = k_madvise((uintptr_t) addr, length, advice);
printf("madvise(%p, %lu, MADV_RANDOM) = %s\n",
addr, length, sprintrc(rc));
static const kernel_ulong_t bogus_length =
(kernel_ulong_t) 0xfffffffffffffaceULL;
rc = k_madvise(0, bogus_length, MADV_SEQUENTIAL);
printf("madvise(NULL, %llu, MADV_SEQUENTIAL) = %s\n",
(unsigned long long) bogus_length, sprintrc(rc));
if (F8ILL_KULONG_SUPPORTED) {
rc = k_madvise(f8ill_ptr_to_kulong(addr), length, MADV_NORMAL);
printf("madvise(%#llx, %lu, MADV_NORMAL) = %s\n",
(unsigned long long) f8ill_ptr_to_kulong(addr),
length, sprintrc(rc));
}
puts("+++ exited with 0 +++");
return 0;
}
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