xref: /aosp_15_r20/external/strace/tests-m32/nlattr_nlmsgerr.c (revision cf84ac9a129d8ea9952db616b4e9b904c4bdde56)
1*cf84ac9aSAndroid Build Coastguard Worker /*
2*cf84ac9aSAndroid Build Coastguard Worker  * Copyright (c) 2017 JingPiao Chen <[email protected]>
3*cf84ac9aSAndroid Build Coastguard Worker  * Copyright (c) 2017-2018 The strace developers.
4*cf84ac9aSAndroid Build Coastguard Worker  * All rights reserved.
5*cf84ac9aSAndroid Build Coastguard Worker  *
6*cf84ac9aSAndroid Build Coastguard Worker  * Redistribution and use in source and binary forms, with or without
7*cf84ac9aSAndroid Build Coastguard Worker  * modification, are permitted provided that the following conditions
8*cf84ac9aSAndroid Build Coastguard Worker  * are met:
9*cf84ac9aSAndroid Build Coastguard Worker  * 1. Redistributions of source code must retain the above copyright
10*cf84ac9aSAndroid Build Coastguard Worker  *    notice, this list of conditions and the following disclaimer.
11*cf84ac9aSAndroid Build Coastguard Worker  * 2. Redistributions in binary form must reproduce the above copyright
12*cf84ac9aSAndroid Build Coastguard Worker  *    notice, this list of conditions and the following disclaimer in the
13*cf84ac9aSAndroid Build Coastguard Worker  *    documentation and/or other materials provided with the distribution.
14*cf84ac9aSAndroid Build Coastguard Worker  * 3. The name of the author may not be used to endorse or promote products
15*cf84ac9aSAndroid Build Coastguard Worker  *    derived from this software without specific prior written permission.
16*cf84ac9aSAndroid Build Coastguard Worker  *
17*cf84ac9aSAndroid Build Coastguard Worker  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18*cf84ac9aSAndroid Build Coastguard Worker  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19*cf84ac9aSAndroid Build Coastguard Worker  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20*cf84ac9aSAndroid Build Coastguard Worker  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21*cf84ac9aSAndroid Build Coastguard Worker  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22*cf84ac9aSAndroid Build Coastguard Worker  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23*cf84ac9aSAndroid Build Coastguard Worker  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24*cf84ac9aSAndroid Build Coastguard Worker  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25*cf84ac9aSAndroid Build Coastguard Worker  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26*cf84ac9aSAndroid Build Coastguard Worker  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27*cf84ac9aSAndroid Build Coastguard Worker  */
28*cf84ac9aSAndroid Build Coastguard Worker 
29*cf84ac9aSAndroid Build Coastguard Worker #include "tests.h"
30*cf84ac9aSAndroid Build Coastguard Worker #include <stdio.h>
31*cf84ac9aSAndroid Build Coastguard Worker #include <stdint.h>
32*cf84ac9aSAndroid Build Coastguard Worker #include "test_nlattr.h"
33*cf84ac9aSAndroid Build Coastguard Worker 
34*cf84ac9aSAndroid Build Coastguard Worker #define NLMSGERR_ATTR_COOKIE 3
35*cf84ac9aSAndroid Build Coastguard Worker 
36*cf84ac9aSAndroid Build Coastguard Worker static void
init_nlmsgerr(struct nlmsghdr * const nlh,const unsigned int msg_len)37*cf84ac9aSAndroid Build Coastguard Worker init_nlmsgerr(struct nlmsghdr *const nlh, const unsigned int msg_len)
38*cf84ac9aSAndroid Build Coastguard Worker {
39*cf84ac9aSAndroid Build Coastguard Worker 	SET_STRUCT(struct nlmsghdr, nlh,
40*cf84ac9aSAndroid Build Coastguard Worker 		.nlmsg_len = msg_len,
41*cf84ac9aSAndroid Build Coastguard Worker 		.nlmsg_type = NLMSG_ERROR,
42*cf84ac9aSAndroid Build Coastguard Worker 		.nlmsg_flags = NLM_F_REQUEST | NLM_F_CAPPED
43*cf84ac9aSAndroid Build Coastguard Worker 	);
44*cf84ac9aSAndroid Build Coastguard Worker 
45*cf84ac9aSAndroid Build Coastguard Worker 	struct nlmsgerr *const err = NLMSG_DATA(nlh);
46*cf84ac9aSAndroid Build Coastguard Worker 	SET_STRUCT(struct nlmsgerr, err,
47*cf84ac9aSAndroid Build Coastguard Worker 		.error = -13,
48*cf84ac9aSAndroid Build Coastguard Worker 		.msg = {
49*cf84ac9aSAndroid Build Coastguard Worker 			.nlmsg_len = NLMSG_HDRLEN + 4,
50*cf84ac9aSAndroid Build Coastguard Worker 			.nlmsg_type = NLMSG_NOOP,
51*cf84ac9aSAndroid Build Coastguard Worker 			.nlmsg_flags = NLM_F_REQUEST,
52*cf84ac9aSAndroid Build Coastguard Worker 		}
53*cf84ac9aSAndroid Build Coastguard Worker 	);
54*cf84ac9aSAndroid Build Coastguard Worker }
55*cf84ac9aSAndroid Build Coastguard Worker 
56*cf84ac9aSAndroid Build Coastguard Worker static void
print_nlmsgerr(const unsigned int msg_len)57*cf84ac9aSAndroid Build Coastguard Worker print_nlmsgerr(const unsigned int msg_len)
58*cf84ac9aSAndroid Build Coastguard Worker {
59*cf84ac9aSAndroid Build Coastguard Worker 	printf("{len=%u, type=NLMSG_ERROR"
60*cf84ac9aSAndroid Build Coastguard Worker 	       ", flags=NLM_F_REQUEST|NLM_F_CAPPED"
61*cf84ac9aSAndroid Build Coastguard Worker 	       ", seq=0, pid=0}, {error=-EACCES"
62*cf84ac9aSAndroid Build Coastguard Worker 	       ", msg={len=%u, type=NLMSG_NOOP"
63*cf84ac9aSAndroid Build Coastguard Worker 	       ", flags=NLM_F_REQUEST, seq=0, pid=0}",
64*cf84ac9aSAndroid Build Coastguard Worker 	       msg_len, NLMSG_HDRLEN + 4);
65*cf84ac9aSAndroid Build Coastguard Worker }
66*cf84ac9aSAndroid Build Coastguard Worker 
67*cf84ac9aSAndroid Build Coastguard Worker int
main(void)68*cf84ac9aSAndroid Build Coastguard Worker main(void)
69*cf84ac9aSAndroid Build Coastguard Worker {
70*cf84ac9aSAndroid Build Coastguard Worker 	skip_if_unavailable("/proc/self/fd/");
71*cf84ac9aSAndroid Build Coastguard Worker 
72*cf84ac9aSAndroid Build Coastguard Worker 	static const uint8_t cookie[] = { 0xab, 0xfe };
73*cf84ac9aSAndroid Build Coastguard Worker 
74*cf84ac9aSAndroid Build Coastguard Worker 	const int fd = create_nl_socket(NETLINK_SOCK_DIAG);
75*cf84ac9aSAndroid Build Coastguard Worker 	const unsigned int hdrlen = sizeof(struct nlmsgerr);
76*cf84ac9aSAndroid Build Coastguard Worker 	void *const nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
77*cf84ac9aSAndroid Build Coastguard Worker 			NLA_HDRLEN + sizeof(cookie));
78*cf84ac9aSAndroid Build Coastguard Worker 
79*cf84ac9aSAndroid Build Coastguard Worker 	TEST_NLATTR(fd, nlh0, hdrlen,
80*cf84ac9aSAndroid Build Coastguard Worker 		    init_nlmsgerr, print_nlmsgerr,
81*cf84ac9aSAndroid Build Coastguard Worker 		    NLMSGERR_ATTR_COOKIE,
82*cf84ac9aSAndroid Build Coastguard Worker 		    sizeof(cookie), cookie, sizeof(cookie),
83*cf84ac9aSAndroid Build Coastguard Worker 		    printf("[%u, %u]", cookie[0], cookie[1]);
84*cf84ac9aSAndroid Build Coastguard Worker 		    printf("}"));
85*cf84ac9aSAndroid Build Coastguard Worker 
86*cf84ac9aSAndroid Build Coastguard Worker 	printf("+++ exited with 0 +++\n");
87*cf84ac9aSAndroid Build Coastguard Worker 	return 0;
88*cf84ac9aSAndroid Build Coastguard Worker }
89