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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2025 Meta Platforms, Inc. and affiliates. */
#include <test_progs.h>
#include <unistd.h>
#include "test_sleepable_tracepoints.skel.h"
#include "test_sleepable_tracepoints_fail.skel.h"
static void run_test(struct test_sleepable_tracepoints *skel)
{
char buf[PATH_MAX] = "/";
skel->bss->target_pid = getpid();
skel->bss->prog_triggered = 0;
skel->bss->err = 0;
skel->bss->copied_byte = 0;
syscall(__NR_getcwd, buf, sizeof(buf));
ASSERT_EQ(skel->bss->prog_triggered, 1, "prog_triggered");
ASSERT_EQ(skel->bss->err, 0, "err");
ASSERT_EQ(skel->bss->copied_byte, '/', "copied_byte");
}
static void run_auto_attach_test(struct bpf_program *prog,
struct test_sleepable_tracepoints *skel)
{
struct bpf_link *link;
link = bpf_program__attach(prog);
if (!ASSERT_OK_PTR(link, "prog_attach"))
return;
run_test(skel);
bpf_link__destroy(link);
}
static void test_attach_only(struct bpf_program *prog)
{
struct bpf_link *link;
link = bpf_program__attach(prog);
if (ASSERT_OK_PTR(link, "attach"))
bpf_link__destroy(link);
}
static void test_attach_reject(struct bpf_program *prog)
{
struct bpf_link *link;
link = bpf_program__attach(prog);
if (!ASSERT_ERR_PTR(link, "attach_should_fail"))
bpf_link__destroy(link);
}
static void test_raw_tp_bare(struct test_sleepable_tracepoints *skel)
{
struct bpf_link *link;
link = bpf_program__attach_raw_tracepoint(skel->progs.handle_raw_tp_bare,
"sys_enter");
if (ASSERT_OK_PTR(link, "attach"))
bpf_link__destroy(link);
}
static void test_tp_bare(struct test_sleepable_tracepoints *skel)
{
struct bpf_link *link;
link = bpf_program__attach_tracepoint(skel->progs.handle_tp_bare,
"syscalls", "sys_enter_getcwd");
if (ASSERT_OK_PTR(link, "attach"))
bpf_link__destroy(link);
}
static void test_test_run(struct test_sleepable_tracepoints *skel)
{
__u64 args[2] = {0x1234ULL, 0x5678ULL};
LIBBPF_OPTS(bpf_test_run_opts, topts,
.ctx_in = args,
.ctx_size_in = sizeof(args),
);
int fd, err;
fd = bpf_program__fd(skel->progs.handle_test_run);
err = bpf_prog_test_run_opts(fd, &topts);
ASSERT_OK(err, "test_run");
ASSERT_EQ(topts.retval, args[0] + args[1], "test_run_retval");
}
static void test_test_run_on_cpu_reject(struct test_sleepable_tracepoints *skel)
{
__u64 args[2] = {};
LIBBPF_OPTS(bpf_test_run_opts, topts,
.ctx_in = args,
.ctx_size_in = sizeof(args),
.flags = BPF_F_TEST_RUN_ON_CPU,
);
int fd, err;
fd = bpf_program__fd(skel->progs.handle_test_run);
err = bpf_prog_test_run_opts(fd, &topts);
ASSERT_ERR(err, "test_run_on_cpu_reject");
}
void test_sleepable_tracepoints(void)
{
struct test_sleepable_tracepoints *skel;
skel = test_sleepable_tracepoints__open_and_load();
if (!ASSERT_OK_PTR(skel, "open_and_load"))
return;
if (test__start_subtest("tp_btf"))
run_auto_attach_test(skel->progs.handle_sys_enter_tp_btf, skel);
if (test__start_subtest("raw_tp"))
run_auto_attach_test(skel->progs.handle_sys_enter_raw_tp, skel);
if (test__start_subtest("tracepoint"))
run_auto_attach_test(skel->progs.handle_sys_enter_tp, skel);
if (test__start_subtest("sys_exit"))
run_auto_attach_test(skel->progs.handle_sys_exit_tp, skel);
if (test__start_subtest("tracepoint_alias"))
test_attach_only(skel->progs.handle_sys_enter_tp_alias);
if (test__start_subtest("raw_tracepoint_alias"))
test_attach_only(skel->progs.handle_sys_enter_raw_tp_alias);
if (test__start_subtest("raw_tp_bare"))
test_raw_tp_bare(skel);
if (test__start_subtest("tp_bare"))
test_tp_bare(skel);
if (test__start_subtest("test_run"))
test_test_run(skel);
if (test__start_subtest("test_run_on_cpu_reject"))
test_test_run_on_cpu_reject(skel);
if (test__start_subtest("raw_tp_non_faultable"))
test_attach_reject(skel->progs.handle_raw_tp_non_faultable);
if (test__start_subtest("tp_non_syscall"))
test_attach_reject(skel->progs.handle_tp_non_syscall);
if (test__start_subtest("tp_btf_non_faultable_reject"))
RUN_TESTS(test_sleepable_tracepoints_fail);
test_sleepable_tracepoints__destroy(skel);
}
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