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/*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <stdio.h>
#include <sys/mman.h>
#define DEFAULT_STRLEN 32
static void
print_mincore(const unsigned int pages, void *const addr,
const size_t size, unsigned char *const vec)
{
unsigned int i;
if (mincore(addr, size, vec))
perror_msg_and_skip("mincore");
printf("mincore(%p, %zu, [", addr, size);
for (i = 0; i < pages; ++i) {
if (i)
printf(", ");
if (i >= DEFAULT_STRLEN) {
printf("...");
break;
}
printf("%u", vec[i] & 1);
}
puts("]) = 0");
}
static void
test_mincore(const unsigned int pages)
{
const size_t page_size = get_page_size();
const size_t size = pages * page_size;
void *const addr = tail_alloc(size);
unsigned char *const vec = tail_alloc(pages);
mincore(addr, size, NULL);
printf("mincore(%p, %zu, NULL) = -1 %s (%m)\n",
addr, size, errno2name());
print_mincore(pages, addr, size, vec);
if (size)
print_mincore(pages, addr, size - page_size + 1, vec);
}
int main(void)
{
test_mincore(1);
test_mincore(2);
test_mincore(DEFAULT_STRLEN);
test_mincore(DEFAULT_STRLEN + 1);
puts("+++ exited with 0 +++");
return 0;
}
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