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tests: add check for netlink protocol decoding with -yy option

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* tests/netlink_netlink_diag.c: New file.
* tests/net-yy-netlink.c: New file.
* tests/net-yy-netlink.test: New test.
* tests/.gitignore: Add net-yy-netlink and netlink_netlink_diag
* tests/Makefile.am (check_PROGRAMS): Likewise.
(TESTS): Add net-yy-netlink.test.
This commit is contained in:
Fabien Siron 2016-05-21 07:49:00 +00:00 committed by Dmitry V. Levin
parent 814c0d575d
commit 28e955d747
5 changed files with 281 additions and 0 deletions
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2
tests/.gitignore vendored
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@ -133,8 +133,10 @@ net-accept-connect
net-icmp_filter
net-y-unix
net-yy-inet
net-yy-netlink
net-yy-unix
netlink_inet_diag
netlink_netlink_diag
netlink_unix_diag
newfstatat
nsyscalls

3
tests/Makefile.am
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@ -186,8 +186,10 @@ check_PROGRAMS = \
net-icmp_filter \
net-y-unix \
net-yy-inet \
net-yy-netlink \
net-yy-unix \
netlink_inet_diag \
netlink_netlink_diag \
netlink_unix_diag \
newfstatat \
nsyscalls \
@ -471,6 +473,7 @@ DECODER_TESTS = \
net-icmp_filter.test \
net-y-unix.test \
net-yy-inet.test \
net-yy-netlink.test \
net-yy-unix.test \
net.test \
newfstatat.test \

83
tests/net-yy-netlink.c Normal file
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@ -0,0 +1,83 @@
/*
* This file is part of net-yy-netlink strace test.
*
* Copyright (c) 2013-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* 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 <assert.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <linux/netlink.h>
#include <linux/sock_diag.h>
#include <linux/netlink_diag.h>
#if !defined NETLINK_SOCK_DIAG && defined NETLINK_INET_DIAG
# define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
#endif
int
main(void)
{
unsigned magic = 1234;
struct sockaddr_nl addr = {
.nl_family = AF_NETLINK,
.nl_pid = 1234
};
struct sockaddr *const sa = tail_memdup(&addr, sizeof(addr));
socklen_t * const len = tail_alloc(sizeof(socklen_t));
*len = sizeof(addr);
const int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_SOCK_DIAG);
if (fd < 0)
perror_msg_and_skip("socket");
const unsigned long inode = inode_of_sockfd(fd);
printf("socket(AF_NETLINK, SOCK_RAW, NETLINK_SOCK_DIAG) = "
"%d<NETLINK:[%lu]>\n", fd, inode);
if (bind(fd, sa, *len))
perror_msg_and_skip("bind");
printf("bind(%d<NETLINK:[%lu]>, {sa_family=AF_NETLINK, pid=%u, "
"groups=00000000}, %u) = 0\n", fd, inode, magic,
(unsigned) *len);
assert(recvmsg(fd, NULL, MSG_DONTWAIT) == -1);
printf("recvmsg(%d<NETLINK:[SOCK_DIAG:%u]>, NULL, MSG_DONTWAIT)"
" = -1 %s (%m)\n", fd, magic, errno2name());
assert(close(fd) == 0);
printf("close(%d<NETLINK:[SOCK_DIAG:%u]>) = 0\n", fd, magic);
puts("+++ exited with 0 +++");
return 0;
}

50
tests/net-yy-netlink.test Executable file
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@ -0,0 +1,50 @@
#!/bin/sh
#
# Check decoding of protocol:portid pairs associated with socket
# descriptors
#
# Copyright (c) 2014 Masatake YAMATO <yamato@redhat.com>
# Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
# Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
# 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.
. "${srcdir=.}/init.sh"
# strace -yy is implemented using /proc/self/fd
[ -d /proc/self/fd/ ] ||
framework_skip_ '/proc/self/fd/ is not available'
check_prog sed
run_prog ./netlink_netlink_diag
addr="$NAME-local-stream"
run_prog "./$NAME" $addr > /dev/null
run_strace -a22 -yy -eclose,network $args > "$EXP"
# Filter out close() calls made by ld.so and libc.
sed -n '/socket/,$p' < "$LOG" > "$OUT"
match_diff "$OUT" "$EXP"
rm -f "$EXP" "$OUT"

143
tests/netlink_netlink_diag.c Normal file
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@ -0,0 +1,143 @@
/*
* 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>
* 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 <linux/netlink.h>
#include <linux/sock_diag.h>
#include <linux/netlink_diag.h>
#if !defined NETLINK_SOCK_DIAG && defined NETLINK_INET_DIAG
# define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
#endif
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,
.ndiag_show = NDIAG_SHOW_MEMINFO
}
};
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 long buf[8192 / sizeof(long)];
struct sockaddr_nl nladdr = {
.nl_family = AF_NETLINK
};
struct iovec iov = {
.iov_base = buf,
.iov_len = sizeof(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 = (struct nlmsghdr *) buf;
if (!NLMSG_OK(h, ret))
error_msg_and_skip("!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;
}