You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
214 lines
6.4 KiB
214 lines
6.4 KiB
/*
|
|
* Check decoding of getsockopt and setsockopt for SOL_NETLINK level.
|
|
*
|
|
* Copyright (c) 2017 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 "netlink.h"
|
|
#include <stdio.h>
|
|
|
|
#ifndef SOL_NETLINK
|
|
# define SOL_NETLINK 270
|
|
#endif
|
|
|
|
static int rc;
|
|
static const char *errstr;
|
|
|
|
static int
|
|
get_sockopt(int fd, int name, void *val, socklen_t *len)
|
|
{
|
|
rc = getsockopt(fd, SOL_NETLINK, name, val, len);
|
|
errstr = sprintrc(rc);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
set_sockopt(int fd, int name, void *val, socklen_t len)
|
|
{
|
|
rc = setsockopt(fd, SOL_NETLINK, name, val, len);
|
|
errstr = sprintrc(rc);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
static const struct {
|
|
int val;
|
|
const char *str;
|
|
} names[] = {
|
|
#ifdef NETLINK_ADD_MEMBERSHIP
|
|
{ ARG_STR(NETLINK_ADD_MEMBERSHIP) },
|
|
#endif
|
|
#ifdef NETLINK_DROP_MEMBERSHIP
|
|
{ ARG_STR(NETLINK_DROP_MEMBERSHIP) },
|
|
#endif
|
|
#ifdef NETLINK_PKTINFO
|
|
{ ARG_STR(NETLINK_PKTINFO) },
|
|
#endif
|
|
#ifdef NETLINK_BROADCAST_ERROR
|
|
{ ARG_STR(NETLINK_BROADCAST_ERROR) },
|
|
#endif
|
|
#ifdef NETLINK_NO_ENOBUFS
|
|
{ ARG_STR(NETLINK_NO_ENOBUFS) },
|
|
#endif
|
|
#ifdef NETLINK_RX_RING
|
|
{ ARG_STR(NETLINK_RX_RING) },
|
|
#endif
|
|
#ifdef NETLINK_TX_RING
|
|
{ ARG_STR(NETLINK_TX_RING) },
|
|
#endif
|
|
#ifdef NETLINK_LISTEN_ALL_NSID
|
|
{ ARG_STR(NETLINK_LISTEN_ALL_NSID) },
|
|
#endif
|
|
#ifdef NETLINK_LIST_MEMBERSHIPS
|
|
{ ARG_STR(NETLINK_LIST_MEMBERSHIPS) },
|
|
#endif
|
|
#ifdef NETLINK_CAP_ACK
|
|
{ ARG_STR(NETLINK_CAP_ACK) },
|
|
#endif
|
|
#ifdef NETLINK_EXT_ACK
|
|
{ ARG_STR(NETLINK_EXT_ACK) },
|
|
#endif
|
|
};
|
|
|
|
TAIL_ALLOC_OBJECT_CONST_PTR(int, val);
|
|
TAIL_ALLOC_OBJECT_CONST_PTR(socklen_t, len);
|
|
void *const efault = val + 1;
|
|
int fd = socket(AF_NETLINK, SOCK_RAW, 0);
|
|
if (fd < 0)
|
|
perror_msg_and_skip("socket AF_NETLINK SOCK_RAW");
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(names); ++i) {
|
|
/* getsockopt */
|
|
|
|
/* classic */
|
|
*len = sizeof(*val);
|
|
get_sockopt(fd, names[i].val, val, len);
|
|
printf("getsockopt(%d, SOL_NETLINK, %s, ", fd, names[i].str);
|
|
if (rc)
|
|
printf("%p", val);
|
|
else
|
|
printf("[%d]", *val);
|
|
printf(", [%d]) = %s\n", *len, errstr);
|
|
|
|
/* optlen larger than necessary - shortened */
|
|
*len = sizeof(*val) + 1;
|
|
get_sockopt(fd, names[i].val, val, len);
|
|
printf("getsockopt(%d, SOL_NETLINK, %s, ", fd, names[i].str);
|
|
if (rc)
|
|
printf("%p", val);
|
|
else
|
|
printf("[%d]", *val);
|
|
printf(", [%d", (int) sizeof(*val) + 1);
|
|
if ((int) sizeof(*val) + 1 != *len)
|
|
printf("->%d", *len);
|
|
printf("]) = %s\n", errstr);
|
|
|
|
/* zero optlen - print returned optlen */
|
|
*len = 0;
|
|
get_sockopt(fd, names[i].val, NULL, len);
|
|
printf("getsockopt(%d, SOL_NETLINK, %s, NULL, [0",
|
|
fd, names[i].str);
|
|
if (*len)
|
|
printf("->%d", *len);
|
|
printf("]) = %s\n", errstr);
|
|
|
|
#ifdef NETLINK_LIST_MEMBERSHIPS
|
|
if (names[i].val != NETLINK_LIST_MEMBERSHIPS) {
|
|
#endif
|
|
/* optlen shorter than necessary - print address */
|
|
*len = sizeof(*val) - 1;
|
|
get_sockopt(fd, names[i].val, val, len);
|
|
printf("getsockopt(%d, SOL_NETLINK, %s, %p, [%d",
|
|
fd, names[i].str, val, (int) sizeof(*val) - 1);
|
|
if ((int) sizeof(*val) - 1 != *len)
|
|
printf("->%d", *len);
|
|
printf("]) = %s\n", errstr);
|
|
#ifdef NETLINK_LIST_MEMBERSHIPS
|
|
} else {
|
|
/* optlen shorter than required for the first element */
|
|
*len = sizeof(*val) - 1;
|
|
get_sockopt(fd, names[i].val, efault, len);
|
|
printf("getsockopt(%d, SOL_NETLINK, %s, ",
|
|
fd, names[i].str);
|
|
if (rc)
|
|
printf("%p", efault);
|
|
else
|
|
printf("[]");
|
|
printf(", [%d", (int) sizeof(*val) - 1);
|
|
if ((int) sizeof(*val) - 1 != *len)
|
|
printf("->%d", *len);
|
|
printf("]) = %s\n", errstr);
|
|
}
|
|
#endif
|
|
|
|
/* optval EFAULT - print address */
|
|
*len = sizeof(*val);
|
|
get_sockopt(fd, names[i].val, efault, len);
|
|
printf("getsockopt(%d, SOL_NETLINK, %s, %p, [%d]) = %s\n",
|
|
fd, names[i].str, efault, *len, errstr);
|
|
|
|
/* optlen EFAULT - print address */
|
|
get_sockopt(fd, names[i].val, val, len + 1);
|
|
printf("getsockopt(%d, SOL_NETLINK, %s, %p, %p) = %s\n",
|
|
fd, names[i].str, val, len + 1, errstr);
|
|
|
|
/* setsockopt */
|
|
|
|
/* classic */
|
|
*val = 0xdefaced;
|
|
set_sockopt(fd, names[i].val, val, sizeof(*val));
|
|
printf("setsockopt(%d, SOL_NETLINK, %s, [%d], %d) = %s\n",
|
|
fd, names[i].str, *val, (int) sizeof(*val), errstr);
|
|
|
|
/* optlen larger than necessary - shortened */
|
|
set_sockopt(fd, names[i].val, val, sizeof(*val) + 1);
|
|
printf("setsockopt(%d, SOL_NETLINK, %s, [%d], %d) = %s\n",
|
|
fd, names[i].str, *val, (int) sizeof(*val) + 1, errstr);
|
|
|
|
/* optlen < 0 - print address */
|
|
set_sockopt(fd, names[i].val, val, -1U);
|
|
printf("setsockopt(%d, SOL_NETLINK, %s, %p, -1) = %s\n",
|
|
fd, names[i].str, val, errstr);
|
|
|
|
/* optlen smaller than necessary - print address */
|
|
set_sockopt(fd, names[i].val, val, sizeof(*val) - 1);
|
|
printf("setsockopt(%d, SOL_NETLINK, %s, %p, %d) = %s\n",
|
|
fd, names[i].str, val, (int) sizeof(*val) - 1, errstr);
|
|
|
|
/* optval EFAULT - print address */
|
|
set_sockopt(fd, names[i].val, efault, sizeof(*val));
|
|
printf("setsockopt(%d, SOL_NETLINK, %s, %p, %d) = %s\n",
|
|
fd, names[i].str, efault, (int) sizeof(*val), errstr);
|
|
}
|
|
|
|
puts("+++ exited with 0 +++");
|
|
return 0;
|
|
}
|