// SPDX-License-Identifier: GPL-2.0 #include /* TODO: corrupts other tests uses connect() */ void serial_test_probe_user(void) { static const char *const prog_names[] = { "handle_sys_connect", #if defined(__s390x__) "handle_sys_socketcall", #endif }; enum { prog_count = ARRAY_SIZE(prog_names) }; const char *obj_file = "./test_probe_user.o"; DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, ); int err, results_map_fd, sock_fd, duration = 0; struct sockaddr curr, orig, tmp; struct sockaddr_in *in = (struct sockaddr_in *)&curr; struct bpf_link *kprobe_links[prog_count] = {}; struct bpf_program *kprobe_progs[prog_count]; struct bpf_object *obj; static const int zero = 0; size_t i; obj = bpf_object__open_file(obj_file, &opts); if (!ASSERT_OK_PTR(obj, "obj_open_file")) return; for (i = 0; i < prog_count; i++) { kprobe_progs[i] = bpf_object__find_program_by_name(obj, prog_names[i]); if (CHECK(!kprobe_progs[i], "find_probe", "prog '%s' not found\n", prog_names[i])) goto cleanup; } err = bpf_object__load(obj); if (CHECK(err, "obj_load", "err %d\n", err)) goto cleanup; results_map_fd = bpf_find_map(__func__, obj, "test_pro.bss"); if (CHECK(results_map_fd < 0, "find_bss_map", "err %d\n", results_map_fd)) goto cleanup; for (i = 0; i < prog_count; i++) { kprobe_links[i] = bpf_program__attach(kprobe_progs[i]); if (!ASSERT_OK_PTR(kprobe_links[i], "attach_kprobe")) goto cleanup; } memset(&curr, 0, sizeof(curr)); in->sin_family = AF_INET; in->sin_port = htons(5555); in->sin_addr.s_addr = inet_addr("255.255.255.255"); memcpy(&orig, &curr, sizeof(curr)); sock_fd = socket(AF_INET, SOCK_STREAM, 0); if (CHECK(sock_fd < 0, "create_sock_fd", "err %d\n", sock_fd)) goto cleanup; connect(sock_fd, &curr, sizeof(curr)); close(sock_fd); err = bpf_map_lookup_elem(results_map_fd, &zero, &tmp); if (CHECK(err, "get_kprobe_res", "failed to get kprobe res: %d\n", err)) goto cleanup; in = (struct sockaddr_in *)&tmp; if (CHECK(memcmp(&tmp, &orig, sizeof(orig)), "check_kprobe_res", "wrong kprobe res from probe read: %s:%u\n", inet_ntoa(in->sin_addr), ntohs(in->sin_port))) goto cleanup; memset(&tmp, 0xab, sizeof(tmp)); in = (struct sockaddr_in *)&curr; if (CHECK(memcmp(&curr, &tmp, sizeof(tmp)), "check_kprobe_res", "wrong kprobe res from probe write: %s:%u\n", inet_ntoa(in->sin_addr), ntohs(in->sin_port))) goto cleanup; cleanup: for (i = 0; i < prog_count; i++) bpf_link__destroy(kprobe_links[i]); bpf_object__close(obj); }