/*
|
* Check decoding of get_mempolicy 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 <asm/unistd.h>
|
|
#ifdef __NR_get_mempolicy
|
|
# include <stdio.h>
|
# include <unistd.h>
|
|
# include "xlat.h"
|
# include "xlat/policies.h"
|
|
# define MAX_STRLEN 3
|
# define NLONGS(n) ((n + 8 * sizeof(long) - 2) \
|
/ (8 * sizeof(long)))
|
|
static void
|
print_nodes(unsigned long maxnode)
|
{
|
unsigned long *const nodemask =
|
tail_alloc(sizeof(*nodemask) * NLONGS(maxnode));
|
|
if (syscall(__NR_get_mempolicy, 0, nodemask, maxnode, 0, 0)) {
|
printf("get_mempolicy(NULL, %p, %lu, NULL, 0) = -1 %s (%m)\n",
|
nodemask, maxnode, errno2name());
|
return;
|
}
|
|
printf("get_mempolicy(NULL, [");
|
|
unsigned int nlongs = NLONGS(maxnode);
|
unsigned int i;
|
for (i = 0; i < nlongs; ++i) {
|
if (i)
|
fputs(", ", stdout);
|
if (i >= MAX_STRLEN) {
|
fputs("...", stdout);
|
break;
|
}
|
printf("%#0*lx", (int) sizeof(*nodemask) * 2 + 2, nodemask[i]);
|
}
|
|
printf("], %lu, NULL, 0) = 0\n", maxnode);
|
}
|
|
int
|
main(void)
|
{
|
long rc;
|
|
if (syscall(__NR_get_mempolicy, 0, 0, 0, 0, 0))
|
perror_msg_and_skip("get_mempolicy");
|
puts("get_mempolicy(NULL, NULL, 0, NULL, 0) = 0");
|
|
int *mode = (void *) 0xdefaced1baddeed2;
|
unsigned long maxnode = (unsigned long) 0xcafef00dbadc0dedULL;
|
const unsigned long *nodemask = (void *) 0xfacedad3bebefed4ULL;
|
const unsigned long addr = (unsigned long) 0xfacefeeddeadbeefULL;
|
const unsigned long flags = -1U;
|
rc = syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags);
|
printf("get_mempolicy(%p, %p, %lu, %#lx, %s|%#lx) = %ld %s (%m)\n",
|
mode, nodemask, maxnode, addr,
|
"MPOL_F_NODE|MPOL_F_ADDR",
|
flags & ~3, rc, errno2name());
|
|
mode = tail_alloc(sizeof(*mode));
|
|
rc = syscall(__NR_get_mempolicy, mode, 0, 0, 0, 0);
|
printf("get_mempolicy([");
|
printxval(policies, (unsigned) *mode, "MPOL_???");
|
printf("], NULL, 0, NULL, 0) = %ld\n", rc);
|
|
*mode = -1;
|
rc = syscall(__NR_get_mempolicy, mode, 0, 0, mode - 1, 2);
|
printf("get_mempolicy([");
|
printxval(policies, (unsigned) *mode, "MPOL_???");
|
printf("], NULL, 0, %p, MPOL_F_ADDR) = %ld\n", mode - 1, rc);
|
|
maxnode = get_page_size() * 8;
|
|
print_nodes(maxnode);
|
print_nodes(maxnode + 1);
|
print_nodes(maxnode + 2);
|
|
maxnode = sizeof(*nodemask) * 8;
|
print_nodes(maxnode - 1);
|
print_nodes(maxnode );
|
print_nodes(maxnode + 1);
|
print_nodes(maxnode + 2);
|
print_nodes(maxnode * 2 - 1);
|
print_nodes(maxnode * 2 );
|
print_nodes(maxnode * 2 + 1);
|
print_nodes(maxnode * 2 + 2);
|
print_nodes(maxnode * 3 - 1);
|
print_nodes(maxnode * 3 );
|
print_nodes(maxnode * 3 + 1);
|
print_nodes(maxnode * 3 + 2);
|
|
puts("+++ exited with 0 +++");
|
return 0;
|
}
|
|
#else
|
|
SKIP_MAIN_UNDEFINED("__NR_get_mempolicy")
|
|
#endif
|
