179 lines
3.7 KiB
C
179 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
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#define _GNU_SOURCE
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#include <sys/wait.h>
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#include <test_progs.h>
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#include <unistd.h>
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#include "task_kfunc_failure.skel.h"
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#include "task_kfunc_success.skel.h"
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static struct task_kfunc_success *open_load_task_kfunc_skel(void)
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{
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struct task_kfunc_success *skel;
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int err;
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skel = task_kfunc_success__open();
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if (!ASSERT_OK_PTR(skel, "skel_open"))
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return NULL;
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skel->bss->pid = getpid();
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err = task_kfunc_success__load(skel);
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if (!ASSERT_OK(err, "skel_load"))
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goto cleanup;
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return skel;
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cleanup:
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task_kfunc_success__destroy(skel);
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return NULL;
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}
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static void run_success_test(const char *prog_name)
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{
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struct task_kfunc_success *skel;
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int status;
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pid_t child_pid;
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struct bpf_program *prog;
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struct bpf_link *link = NULL;
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skel = open_load_task_kfunc_skel();
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if (!ASSERT_OK_PTR(skel, "open_load_skel"))
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return;
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if (!ASSERT_OK(skel->bss->err, "pre_spawn_err"))
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goto cleanup;
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prog = bpf_object__find_program_by_name(skel->obj, prog_name);
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if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
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goto cleanup;
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link = bpf_program__attach(prog);
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if (!ASSERT_OK_PTR(link, "attached_link"))
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goto cleanup;
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child_pid = fork();
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if (!ASSERT_GT(child_pid, -1, "child_pid"))
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goto cleanup;
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if (child_pid == 0)
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_exit(0);
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waitpid(child_pid, &status, 0);
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ASSERT_OK(skel->bss->err, "post_wait_err");
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cleanup:
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bpf_link__destroy(link);
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task_kfunc_success__destroy(skel);
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}
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static int run_vpid_test(void *prog_name)
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{
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struct task_kfunc_success *skel;
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struct bpf_program *prog;
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int prog_fd, err = 0;
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if (getpid() != 1)
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return 1;
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skel = open_load_task_kfunc_skel();
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if (!skel)
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return 2;
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if (skel->bss->err) {
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err = 3;
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goto cleanup;
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}
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prog = bpf_object__find_program_by_name(skel->obj, prog_name);
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if (!prog) {
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err = 4;
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goto cleanup;
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}
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prog_fd = bpf_program__fd(prog);
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if (prog_fd < 0) {
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err = 5;
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goto cleanup;
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}
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if (bpf_prog_test_run_opts(prog_fd, NULL)) {
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err = 6;
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goto cleanup;
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}
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if (skel->bss->err)
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err = 7 + skel->bss->err;
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cleanup:
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task_kfunc_success__destroy(skel);
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return err;
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}
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static void run_vpid_success_test(const char *prog_name)
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{
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const int stack_size = 1024 * 1024;
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int child_pid, wstatus;
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char *stack;
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stack = (char *)malloc(stack_size);
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if (!ASSERT_OK_PTR(stack, "clone_stack"))
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return;
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child_pid = clone(run_vpid_test, stack + stack_size,
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CLONE_NEWPID | SIGCHLD, (void *)prog_name);
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if (!ASSERT_GT(child_pid, -1, "child_pid"))
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goto cleanup;
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if (!ASSERT_GT(waitpid(child_pid, &wstatus, 0), -1, "waitpid"))
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goto cleanup;
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if (WEXITSTATUS(wstatus) > 7)
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ASSERT_OK(WEXITSTATUS(wstatus) - 7, "vpid_test_failure");
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else
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ASSERT_OK(WEXITSTATUS(wstatus), "run_vpid_test_err");
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cleanup:
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free(stack);
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}
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static const char * const success_tests[] = {
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"test_task_acquire_release_argument",
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"test_task_acquire_release_current",
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"test_task_acquire_leave_in_map",
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"test_task_xchg_release",
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"test_task_map_acquire_release",
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"test_task_current_acquire_release",
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"test_task_from_pid_arg",
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"test_task_from_pid_current",
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"test_task_from_pid_invalid",
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"task_kfunc_acquire_trusted_walked",
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"test_task_kfunc_flavor_relo",
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"test_task_kfunc_flavor_relo_not_found",
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};
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static const char * const vpid_success_tests[] = {
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"test_task_from_vpid_current",
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"test_task_from_vpid_invalid",
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};
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void test_task_kfunc(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(success_tests); i++) {
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if (!test__start_subtest(success_tests[i]))
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continue;
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run_success_test(success_tests[i]);
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}
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for (i = 0; i < ARRAY_SIZE(vpid_success_tests); i++) {
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if (!test__start_subtest(vpid_success_tests[i]))
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continue;
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run_vpid_success_test(vpid_success_tests[i]);
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}
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RUN_TESTS(task_kfunc_failure);
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}
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