| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ |
| |
| #define _GNU_SOURCE |
| #include <sys/wait.h> |
| #include <test_progs.h> |
| #include <unistd.h> |
| |
| #include "task_kfunc_failure.skel.h" |
| #include "task_kfunc_success.skel.h" |
| |
| static struct task_kfunc_success *open_load_task_kfunc_skel(void) |
| { |
| struct task_kfunc_success *skel; |
| int err; |
| |
| skel = task_kfunc_success__open(); |
| if (!ASSERT_OK_PTR(skel, "skel_open")) |
| return NULL; |
| |
| skel->bss->pid = getpid(); |
| |
| err = task_kfunc_success__load(skel); |
| if (!ASSERT_OK(err, "skel_load")) |
| goto cleanup; |
| |
| return skel; |
| |
| cleanup: |
| task_kfunc_success__destroy(skel); |
| return NULL; |
| } |
| |
| static void run_success_test(const char *prog_name) |
| { |
| struct task_kfunc_success *skel; |
| int status; |
| pid_t child_pid; |
| struct bpf_program *prog; |
| struct bpf_link *link = NULL; |
| |
| skel = open_load_task_kfunc_skel(); |
| if (!ASSERT_OK_PTR(skel, "open_load_skel")) |
| return; |
| |
| if (!ASSERT_OK(skel->bss->err, "pre_spawn_err")) |
| goto cleanup; |
| |
| prog = bpf_object__find_program_by_name(skel->obj, prog_name); |
| if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name")) |
| goto cleanup; |
| |
| link = bpf_program__attach(prog); |
| if (!ASSERT_OK_PTR(link, "attached_link")) |
| goto cleanup; |
| |
| child_pid = fork(); |
| if (!ASSERT_GT(child_pid, -1, "child_pid")) |
| goto cleanup; |
| if (child_pid == 0) |
| _exit(0); |
| waitpid(child_pid, &status, 0); |
| |
| ASSERT_OK(skel->bss->err, "post_wait_err"); |
| |
| cleanup: |
| bpf_link__destroy(link); |
| task_kfunc_success__destroy(skel); |
| } |
| |
| static const char * const success_tests[] = { |
| "test_task_acquire_release_argument", |
| "test_task_acquire_release_current", |
| "test_task_acquire_leave_in_map", |
| "test_task_xchg_release", |
| "test_task_get_release", |
| "test_task_current_acquire_release", |
| "test_task_from_pid_arg", |
| "test_task_from_pid_current", |
| "test_task_from_pid_invalid", |
| }; |
| |
| void test_task_kfunc(void) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(success_tests); i++) { |
| if (!test__start_subtest(success_tests[i])) |
| continue; |
| |
| run_success_test(success_tests[i]); |
| } |
| |
| RUN_TESTS(task_kfunc_failure); |
| } |