xref: /aosp_15_r20/external/strace/tests-m32/nlattr_rtgenmsg.c (revision cf84ac9a129d8ea9952db616b4e9b904c4bdde56)

/*
 * Copyright (c) 2017 JingPiao Chen <[email protected]>
 * Copyright (c) 2017-2018 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 <stdio.h>
#include "netlink.h"
#include <linux/rtnetlink.h>

#ifdef RTM_GETNSID

# include "test_nlattr.h"

static void
init_rtgenmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
	SET_STRUCT(struct nlmsghdr, nlh,
		.nlmsg_len = msg_len,
		.nlmsg_type = RTM_GETNSID,
		.nlmsg_flags = NLM_F_DUMP
	);

	struct rtgenmsg *const msg = NLMSG_DATA(nlh);
	SET_STRUCT(struct rtgenmsg, msg,
		.rtgen_family = AF_UNIX
	);
}

static void
print_rtgenmsg(const unsigned int msg_len)
{
	printf("{len=%u, type=RTM_GETNSID, flags=NLM_F_DUMP"
	       ", seq=0, pid=0}, {rtgen_family=AF_UNIX}",
	       msg_len);
}

int
main(void)
{
	skip_if_unavailable("/proc/self/fd/");

	const int fd = create_nl_socket(NETLINK_ROUTE);
	const unsigned int hdrlen = sizeof(struct rtgenmsg);
	const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
	char nla_type_str[256];
	void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
				   NLA_HDRLEN + sizeof(nla_type_str));

	static char pattern[4096];
	fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);

	sprintf(nla_type_str, "%#x /* NETNSA_??? */", nla_type);
	TEST_NLATTR_(fd, nlh0, hdrlen,
		     init_rtgenmsg, print_rtgenmsg,
		     nla_type, nla_type_str,
		     4, pattern, 4,
		     print_quoted_hex(pattern, 4));

	puts("+++ exited with 0 +++");
	return 0;
}

#else

SKIP_MAIN_UNDEFINED("RTM_GETNSID")

#endif