88 lines · c
1// SPDX-License-Identifier: GPL-2.02#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#endif12 };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