Dmitry V. Levin
909e664a2e
The "flags" argument of remap_file_page syscall has type "unsigned long", so it is not correct to load most significant bits with garbage ans assume they are going to be ignored. * tests/remap_file_pages.c (main): Remove artificial garbage from flags.
63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
|
|
* Check decoding of remap_file_pages syscall.
|
|
*
|
|
* 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 <sys/syscall.h>
|
|
|
|
#ifdef __NR_remap_file_pages
|
|
|
|
# include <stdio.h>
|
|
# include <sys/mman.h>
|
|
# include <unistd.h>
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
const unsigned long addr = (unsigned long) 0xfacefeeddeadbeef;
|
|
const unsigned long size = (unsigned long) 0xdefaced1bad2f00d;
|
|
const unsigned long prot = (unsigned long) 0xacedcafe00000000
|
|
| PROT_READ|PROT_WRITE|PROT_EXEC;
|
|
const unsigned long pgoff = (unsigned long) 0xcaf3babebad4deed;
|
|
const unsigned long flags = MAP_PRIVATE|MAP_ANONYMOUS;
|
|
|
|
long rc = syscall(__NR_remap_file_pages, addr, size, prot, pgoff, flags);
|
|
printf("remap_file_pages(%#lx, %lu, %s, %lu, %s) = %ld %s (%m)\n",
|
|
addr, size, "PROT_READ|PROT_WRITE|PROT_EXEC", pgoff,
|
|
"MAP_PRIVATE|MAP_ANONYMOUS", rc, errno2name());
|
|
|
|
puts("+++ exited with 0 +++");
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("__NR_remap_file_pages")
|
|
|
|
#endif
|