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/*
* Check decoding of "old mmap" edition of mmap syscall.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2016-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.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 <errno.h>
# include <stdio.h>
# include <string.h>
# include <sys/mman.h>
# include <unistd.h>
# include "xmalloc.h"
# ifndef TEST_FD
# define TEST_FD -2LU
# endif
int
main(void)
{
long rc = syscall(__NR_mmap, 0);
const bool implemented = rc != -1 || errno != ENOSYS;
# ifndef PATH_TRACING
printf("mmap(NULL) = %s\n", sprintrc(rc));
# 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);
# if XLAT_RAW
printf("mmap(%#lx, %lu, %#x, %#x, %d, %#lx) = %s\n",
args1_c[0], args1_c[1], PROT_READ|PROT_EXEC, MAP_FILE | MAP_FIXED,
(int) args1_c[4], args1_c[5], sprintrc(rc));
# elif XLAT_VERBOSE
printf("mmap(%#lx, %lu, %#x /* PROT_READ|PROT_EXEC */"
", %#x /* MAP_FILE|MAP_FIXED */, %d, %#lx) = %s\n",
args1_c[0], args1_c[1], PROT_READ|PROT_EXEC, MAP_FILE | MAP_FIXED,
(int) args1_c[4], args1_c[5], sprintrc(rc));
# else
printf("mmap(%#lx, %lu, PROT_READ|PROT_EXEC, MAP_FILE|MAP_FIXED"
", %d, %#lx) = %s\n",
args1_c[0], args1_c[1], (int) args1_c[4], args1_c[5],
sprintrc(rc));
# endif
memcpy(args, args2_c, sizeof(args2_c));
rc = syscall(__NR_mmap, args);
# ifndef PATH_TRACING
const char *errstr;
if (implemented) {
char *str = xasprintf("%#lx", rc);
errstr = str;
} else {
errstr = sprintrc(rc);
}
# if XLAT_RAW
printf("mmap(NULL, %lu, %#x, %#x, %d, %#lx) = %s\n",
args2_c[1], PROT_READ|PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
(int) args2_c[4], args2_c[5], errstr);
# elif XLAT_VERBOSE
printf("mmap(NULL, %lu, %#x /* PROT_READ|PROT_WRITE */"
", %#x /* MAP_PRIVATE|MAP_ANONYMOUS */, %d, %#lx) = %s\n",
args2_c[1], PROT_READ|PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
(int) args2_c[4], args2_c[5], errstr);
# else
printf("mmap(NULL, %lu, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS"
", %d, %#lx) = %s\n",
args2_c[1], (int) args2_c[4], args2_c[5], errstr);
# endif
# endif
void *addr = (void *) rc;
if (implemented && 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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