// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include "kprobe_multi.skel.h"
#include "trace_helpers.h"
#include "bpf/libbpf_internal.h"

static struct ksyms *ksyms;

static void kprobe_multi_testmod_check(struct kprobe_multi *skel)
{
        ASSERT_EQ(skel->bss->kprobe_testmod_test1_result, 1, "kprobe_test1_result");
        ASSERT_EQ(skel->bss->kprobe_testmod_test2_result, 1, "kprobe_test2_result");
        ASSERT_EQ(skel->bss->kprobe_testmod_test3_result, 1, "kprobe_test3_result");

        ASSERT_EQ(skel->bss->kretprobe_testmod_test1_result, 1, "kretprobe_test1_result");
        ASSERT_EQ(skel->bss->kretprobe_testmod_test2_result, 1, "kretprobe_test2_result");
        ASSERT_EQ(skel->bss->kretprobe_testmod_test3_result, 1, "kretprobe_test3_result");
}

static void test_testmod_attach_api(struct bpf_kprobe_multi_opts *opts)
{
        struct kprobe_multi *skel = NULL;

        skel = kprobe_multi__open_and_load();
        if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
                return;

        skel->bss->pid = getpid();

        skel->links.test_kprobe_testmod = bpf_program__attach_kprobe_multi_opts(
                                                skel->progs.test_kprobe_testmod,
                                                NULL, opts);
        if (!skel->links.test_kprobe_testmod)
                goto cleanup;

        opts->retprobe = true;
        skel->links.test_kretprobe_testmod = bpf_program__attach_kprobe_multi_opts(
                                                skel->progs.test_kretprobe_testmod,
                                                NULL, opts);
        if (!skel->links.test_kretprobe_testmod)
                goto cleanup;

        ASSERT_OK(trigger_module_test_read(1), "trigger_read");
        kprobe_multi_testmod_check(skel);

cleanup:
        kprobe_multi__destroy(skel);
}

static void test_testmod_attach_api_addrs(void)
{
        LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
        unsigned long long addrs[3];

        addrs[0] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test1");
        ASSERT_NEQ(addrs[0], 0, "ksym_get_addr_local");
        addrs[1] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test2");
        ASSERT_NEQ(addrs[1], 0, "ksym_get_addr_local");
        addrs[2] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test3");
        ASSERT_NEQ(addrs[2], 0, "ksym_get_addr_local");

        opts.addrs = (const unsigned long *) addrs;
        opts.cnt = ARRAY_SIZE(addrs);

        test_testmod_attach_api(&opts);
}

static void test_testmod_attach_api_syms(void)
{
        LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
        const char *syms[3] = {
                "bpf_testmod_fentry_test1",
                "bpf_testmod_fentry_test2",
                "bpf_testmod_fentry_test3",
        };

        opts.syms = syms;
        opts.cnt = ARRAY_SIZE(syms);
        test_testmod_attach_api(&opts);
}

void serial_test_kprobe_multi_testmod_test(void)
{
        ksyms = load_kallsyms_local();
        if (!ASSERT_OK_PTR(ksyms, "load_kallsyms_local"))
                return;

        if (test__start_subtest("testmod_attach_api_syms"))
                test_testmod_attach_api_syms();

        if (test__start_subtest("testmod_attach_api_addrs"))
                test_testmod_attach_api_addrs();

        free_kallsyms_local(ksyms);
}