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/*
* Check decoding of "old mmap" edition of mmap syscall.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2016-2018 The strace developers.
* 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 <asm/unistd.h>
/*
* On s390x and m68k, this is the mmap syscall used by glibc, so,
* from one side, it's already covered by another test, and, from another side,
* it would require additional efforts to filter out mmap calls made by glibc.
*/
#if defined __NR_mmap \
&& (defined __arm__ || defined __i386__ || defined __m68k__ \
|| defined __s390__ || defined __s390x__) \
&& (defined PATH_TRACING || !(defined __s390x__ || defined __m68k__))
# include <stdio.h>
# include <string.h>
# include <sys/mman.h>
# include <unistd.h>
# ifndef TEST_FD
# define TEST_FD -2LU
# endif
int
main(void)
{
long rc = syscall(__NR_mmap, 0);
# ifndef PATH_TRACING
printf("mmap(NULL) = %ld %s (%m)\n", rc, errno2name());
# endif
const unsigned long args1_c[6] = {
(unsigned long) 0xbadc0deddeadbeefULL, /* addr */
(unsigned long) 0xdeefacedfacefeedULL, /* len */
PROT_READ|PROT_EXEC, /* prot */
MAP_FILE|MAP_FIXED, /* flags */
TEST_FD, /* fd */
(unsigned long) 0xdecaffedbadc0dedULL /* offset */
};
const unsigned long page_size = get_page_size();
const unsigned long args2_c[6] = {
0,
page_size,
PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS,
-1LU,
(unsigned long) 0xda7a1057faced000ULL & -page_size
};
void *args = tail_memdup(args1_c, sizeof(args1_c));
rc = syscall(__NR_mmap, args);
printf("mmap(%#lx, %lu, PROT_READ|PROT_EXEC, MAP_FILE|MAP_FIXED"
", %d, %#lx) = %ld %s (%m)\n",
args1_c[0], args1_c[1], (int) args1_c[4], args1_c[5],
rc, errno2name());
memcpy(args, args2_c, sizeof(args2_c));
rc = syscall(__NR_mmap, args);
# ifndef PATH_TRACING
printf("mmap(NULL, %lu, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS"
", %d, %#lx) = %#lx\n",
args2_c[1], (int) args2_c[4], args2_c[5], rc);
# endif
void *addr = (void *) rc;
if (mprotect(addr, page_size, PROT_NONE))
perror_msg_and_fail("mprotect(%p, %lu, PROT_NONE)",
addr, page_size);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("defined __NR_mmap "
"&& (defined __arm__ || defined __i386__ || defined __m68k__ "
"|| defined __s390__ || defined __s390x__) "
"&& (defined PATH_TRACING || !(defined __s390x__ || defined __m68k__))")
#endif
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