1// SPDX-License-Identifier: GPL-2.0
2#include <test_progs.h>
3
4/* TODO: corrupts other tests uses connect() */
5void serial_test_probe_user(void)
6{
7	static const char *const prog_names[] = {
8		"handle_sys_connect",
9#if defined(__s390x__)
10		"handle_sys_socketcall",
11#endif
12	};
13	enum { prog_count = ARRAY_SIZE(prog_names) };
14	const char *obj_file = "./test_probe_user.bpf.o";
15	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, );
16	int err, results_map_fd, sock_fd, duration = 0;
17	struct sockaddr curr, orig, tmp;
18	struct sockaddr_in *in = (struct sockaddr_in *)&curr;
19	struct bpf_link *kprobe_links[prog_count] = {};
20	struct bpf_program *kprobe_progs[prog_count];
21	struct bpf_object *obj;
22	static const int zero = 0;
23	size_t i;
24
25	obj = bpf_object__open_file(obj_file, &opts);
26	if (!ASSERT_OK_PTR(obj, "obj_open_file"))
27		return;
28
29	for (i = 0; i < prog_count; i++) {
30		kprobe_progs[i] =
31			bpf_object__find_program_by_name(obj, prog_names[i]);
32		if (CHECK(!kprobe_progs[i], "find_probe",
33			  "prog '%s' not found\n", prog_names[i]))
34			goto cleanup;
35	}
36
37	err = bpf_object__load(obj);
38	if (CHECK(err, "obj_load", "err %d\n", err))
39		goto cleanup;
40
41	results_map_fd = bpf_find_map(__func__, obj, "test_pro.bss");
42	if (CHECK(results_map_fd < 0, "find_bss_map",
43		  "err %d\n", results_map_fd))
44		goto cleanup;
45
46	for (i = 0; i < prog_count; i++) {
47		kprobe_links[i] = bpf_program__attach(kprobe_progs[i]);
48		if (!ASSERT_OK_PTR(kprobe_links[i], "attach_kprobe"))
49			goto cleanup;
50	}
51
52	memset(&curr, 0, sizeof(curr));
53	in->sin_family = AF_INET;
54	in->sin_port = htons(5555);
55	in->sin_addr.s_addr = inet_addr("255.255.255.255");
56	memcpy(&orig, &curr, sizeof(curr));
57
58	sock_fd = socket(AF_INET, SOCK_STREAM, 0);
59	if (CHECK(sock_fd < 0, "create_sock_fd", "err %d\n", sock_fd))
60		goto cleanup;
61
62	connect(sock_fd, &curr, sizeof(curr));
63	close(sock_fd);
64
65	err = bpf_map_lookup_elem(results_map_fd, &zero, &tmp);
66	if (CHECK(err, "get_kprobe_res",
67		  "failed to get kprobe res: %d\n", err))
68		goto cleanup;
69
70	in = (struct sockaddr_in *)&tmp;
71	if (CHECK(memcmp(&tmp, &orig, sizeof(orig)), "check_kprobe_res",
72		  "wrong kprobe res from probe read: %s:%u\n",
73		  inet_ntoa(in->sin_addr), ntohs(in->sin_port)))
74		goto cleanup;
75
76	memset(&tmp, 0xab, sizeof(tmp));
77
78	in = (struct sockaddr_in *)&curr;
79	if (CHECK(memcmp(&curr, &tmp, sizeof(tmp)), "check_kprobe_res",
80		  "wrong kprobe res from probe write: %s:%u\n",
81		  inet_ntoa(in->sin_addr), ntohs(in->sin_port)))
82		goto cleanup;
83cleanup:
84	for (i = 0; i < prog_count; i++)
85		bpf_link__destroy(kprobe_links[i]);
86	bpf_object__close(obj);
87}
88