1 // SPDX-License-Identifier: GPL-2.0 2 #include <test_progs.h> 3 4 /* TODO: corrupts other tests uses connect() */ 5 void 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; 83 cleanup: 84 for (i = 0; i < prog_count; i++) 85 bpf_link__destroy(kprobe_links[i]); 86 bpf_object__close(obj); 87 } 88