blob: e2ff71631d665c8b03a20f9e06f000c0a2f0bd1c [file] [log] [blame]
/*
* Copyright (c) 2015-2016 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 <stdint.h>
#include <unistd.h>
#include <limits.h>
#include <sys/mman.h>
int
main(int ac, char **av)
{
const char *const name = ac > 1 ? av[1] : "mmap";
const intmax_t pagesize = get_page_size();
const unsigned long length1 = pagesize * 6;
const unsigned long length2 = pagesize * 3;
const unsigned long length3 = pagesize * 2;
const int fd = -1;
off_t offset;
void *addr, *p;
#if ULONG_MAX > 4294967295UL
offset = 0xcafedeadbeef000 & -pagesize;
addr = (void *) (uintmax_t) (0xfacefeed000 & -pagesize);
#else
offset = 0xdeadbeef000 & -pagesize;
addr = (void *) (unsigned int) (0xfaced000 & -pagesize);
#endif
const uintmax_t uoffset =
sizeof(offset) == sizeof(int) ? (uintmax_t) (unsigned int) offset
: (uintmax_t) offset;
(void) close(0);
(void) close(0);
printf("%s(NULL, 0, PROT_NONE, MAP_FILE, 0, 0) = -1 EBADF (%m)\n",
name);
mmap(NULL, 0, PROT_NONE, MAP_FILE, 0, 0);
p = mmap(addr, length1, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, fd, offset);
if (MAP_FAILED == p)
perror_msg_and_fail("mmap");
printf("%s(%p, %lu, PROT_READ|PROT_WRITE, "
"MAP_PRIVATE|MAP_ANONYMOUS, %d, %#jx) = %p\n",
name, addr, length1, fd, uoffset, p);
if (msync(p, length1, MS_SYNC))
perror_msg_and_fail("msync");
printf("msync(%p, %lu, MS_SYNC) = 0\n", p, length1);
if (mprotect(p, length1, PROT_NONE))
perror_msg_and_fail("mprotect");
printf("mprotect(%p, %lu, PROT_NONE) = 0\n", p, length1);
addr = mremap(p, length1, length2, 0);
if (MAP_FAILED == addr)
perror_msg_and_fail("mremap");
printf("mremap(%p, %lu, %lu, 0) = %p\n", p, length1, length2, addr);
p = mremap(addr, length2, length3, MREMAP_MAYMOVE | MREMAP_FIXED,
addr + length2);
if (MAP_FAILED == p)
perror_msg_and_fail("mremap");
printf("mremap(%p, %lu, %lu, MREMAP_MAYMOVE|MREMAP_FIXED"
", %p) = %p\n", addr, length2, length3, addr + length2, p);
if (madvise(p, length3, MADV_NORMAL))
perror_msg_and_fail("madvise");
printf("madvise(%p, %lu, MADV_NORMAL) = 0\n", p, length3);
if (munmap(p, length3))
perror_msg_and_fail("munmap");
printf("munmap(%p, %lu) = 0\n", p, length3);
if (mlockall(MCL_FUTURE))
perror_msg_and_fail("mlockall");
puts("mlockall(MCL_FUTURE) = 0");
puts("+++ exited with 0 +++");
return 0;
}