blob: dbecc8d460ef276fa74ff918967a599c14d0ca15 [file] [log] [blame]
/*
* 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 <sys/syscall.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));
(void) tail_alloc(1);
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) 0xcafef00dbadc0ded;
const unsigned long *nodemask = (void *) 0xfacedad3bebefed4;
const unsigned long addr = (unsigned long) 0xfacefeeddeadbeef;
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());
(void) tail_alloc(1);
mode = tail_alloc(sizeof(*mode));
(void) tail_alloc(1);
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