1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ 3 4 #define _GNU_SOURCE 5 #include <sys/wait.h> 6 #include <test_progs.h> 7 #include <unistd.h> 8 9 #include "task_kfunc_failure.skel.h" 10 #include "task_kfunc_success.skel.h" 11 12 static struct task_kfunc_success *open_load_task_kfunc_skel(void) 13 { 14 struct task_kfunc_success *skel; 15 int err; 16 17 skel = task_kfunc_success__open(); 18 if (!ASSERT_OK_PTR(skel, "skel_open")) 19 return NULL; 20 21 skel->bss->pid = getpid(); 22 23 err = task_kfunc_success__load(skel); 24 if (!ASSERT_OK(err, "skel_load")) 25 goto cleanup; 26 27 return skel; 28 29 cleanup: 30 task_kfunc_success__destroy(skel); 31 return NULL; 32 } 33 34 static void run_success_test(const char *prog_name) 35 { 36 struct task_kfunc_success *skel; 37 int status; 38 pid_t child_pid; 39 struct bpf_program *prog; 40 struct bpf_link *link = NULL; 41 42 skel = open_load_task_kfunc_skel(); 43 if (!ASSERT_OK_PTR(skel, "open_load_skel")) 44 return; 45 46 if (!ASSERT_OK(skel->bss->err, "pre_spawn_err")) 47 goto cleanup; 48 49 prog = bpf_object__find_program_by_name(skel->obj, prog_name); 50 if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name")) 51 goto cleanup; 52 53 link = bpf_program__attach(prog); 54 if (!ASSERT_OK_PTR(link, "attached_link")) 55 goto cleanup; 56 57 child_pid = fork(); 58 if (!ASSERT_GT(child_pid, -1, "child_pid")) 59 goto cleanup; 60 if (child_pid == 0) 61 _exit(0); 62 waitpid(child_pid, &status, 0); 63 64 ASSERT_OK(skel->bss->err, "post_wait_err"); 65 66 cleanup: 67 bpf_link__destroy(link); 68 task_kfunc_success__destroy(skel); 69 } 70 71 static const char * const success_tests[] = { 72 "test_task_acquire_release_argument", 73 "test_task_acquire_release_current", 74 "test_task_acquire_leave_in_map", 75 "test_task_xchg_release", 76 "test_task_map_acquire_release", 77 "test_task_current_acquire_release", 78 "test_task_from_pid_arg", 79 "test_task_from_pid_current", 80 "test_task_from_pid_invalid", 81 "task_kfunc_acquire_trusted_walked", 82 }; 83 84 void test_task_kfunc(void) 85 { 86 int i; 87 88 for (i = 0; i < ARRAY_SIZE(success_tests); i++) { 89 if (!test__start_subtest(success_tests[i])) 90 continue; 91 92 run_success_test(success_tests[i]); 93 } 94 95 RUN_TESTS(task_kfunc_failure); 96 } 97