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.
144 lines
4.0 KiB
144 lines
4.0 KiB
/*
|
|
* This file is part of net-yy-netlink strace test.
|
|
*
|
|
* Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
|
|
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
|
|
* 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 <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <netinet/in.h>
|
|
#include "netlink.h"
|
|
#include <linux/sock_diag.h>
|
|
#include <linux/netlink_diag.h>
|
|
|
|
static void
|
|
send_query(const int fd)
|
|
{
|
|
struct sockaddr_nl nladdr = {
|
|
.nl_family = AF_NETLINK
|
|
};
|
|
struct {
|
|
struct nlmsghdr nlh;
|
|
struct netlink_diag_req ndr;
|
|
} req = {
|
|
.nlh = {
|
|
.nlmsg_len = sizeof(req),
|
|
.nlmsg_type = SOCK_DIAG_BY_FAMILY,
|
|
.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST
|
|
},
|
|
.ndr = {
|
|
.sdiag_family = AF_NETLINK,
|
|
.sdiag_protocol = NDIAG_PROTO_ALL
|
|
}
|
|
};
|
|
struct iovec iov = {
|
|
.iov_base = &req,
|
|
.iov_len = sizeof(req)
|
|
};
|
|
struct msghdr msg = {
|
|
.msg_name = (void *) &nladdr,
|
|
.msg_namelen = sizeof(nladdr),
|
|
.msg_iov = &iov,
|
|
.msg_iovlen = 1
|
|
};
|
|
|
|
if (sendmsg(fd, &msg, 0) <= 0)
|
|
perror_msg_and_skip("sendmsg");
|
|
}
|
|
|
|
static void
|
|
check_responses(const int fd)
|
|
{
|
|
static union {
|
|
struct nlmsghdr hdr;
|
|
long buf[8192 / sizeof(long)];
|
|
} hdr_buf;
|
|
|
|
struct sockaddr_nl nladdr = {
|
|
.nl_family = AF_NETLINK
|
|
};
|
|
struct iovec iov = {
|
|
.iov_base = hdr_buf.buf,
|
|
.iov_len = sizeof(hdr_buf.buf)
|
|
};
|
|
struct msghdr msg = {
|
|
.msg_name = (void *) &nladdr,
|
|
.msg_namelen = sizeof(nladdr),
|
|
.msg_iov = &iov,
|
|
.msg_iovlen = 1
|
|
};
|
|
|
|
ssize_t ret = recvmsg(fd, &msg, 0);
|
|
if (ret <= 0)
|
|
perror_msg_and_skip("recvmsg");
|
|
|
|
struct nlmsghdr *h = &hdr_buf.hdr;
|
|
if (!is_nlmsg_ok(h, ret))
|
|
error_msg_and_skip("!is_nlmsg_ok");
|
|
if (h->nlmsg_type == NLMSG_ERROR) {
|
|
const struct nlmsgerr *err = NLMSG_DATA(h);
|
|
if (h->nlmsg_len < NLMSG_LENGTH(sizeof(*err)))
|
|
error_msg_and_skip("NLMSG_ERROR");
|
|
errno = -err->error;
|
|
perror_msg_and_skip("NLMSG_ERROR");
|
|
}
|
|
if (h->nlmsg_type != SOCK_DIAG_BY_FAMILY)
|
|
error_msg_and_skip("unexpected nlmsg_type %u",
|
|
(unsigned) h->nlmsg_type);
|
|
|
|
const struct netlink_diag_msg *diag = NLMSG_DATA(h);
|
|
if (h->nlmsg_len < NLMSG_LENGTH(sizeof(*diag)))
|
|
error_msg_and_skip("short response");
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
struct sockaddr_nl addr;
|
|
socklen_t len = sizeof(addr);
|
|
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.nl_family = AF_NETLINK;
|
|
|
|
close(0);
|
|
close(1);
|
|
|
|
if (socket(AF_NETLINK, SOCK_RAW, NETLINK_SOCK_DIAG))
|
|
perror_msg_and_skip("socket AF_NETLINK");
|
|
if (bind(0, (struct sockaddr *) &addr, len))
|
|
perror_msg_and_skip("bind");
|
|
|
|
if (socket(AF_NETLINK, SOCK_RAW, NETLINK_SOCK_DIAG) != 1)
|
|
perror_msg_and_skip("socket AF_NETLINK");
|
|
|
|
send_query(1);
|
|
check_responses(1);
|
|
return 0;
|
|
}
|