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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 Facebook */
#include <test_progs.h>
#include "test_ksyms.skel.h"
#include <sys/stat.h>
void test_ksyms(void)
{
const char *btf_path = "/sys/kernel/btf/vmlinux";
struct test_ksyms *skel;
struct test_ksyms__data *data;
__u64 link_fops_addr, per_cpu_start_addr;
struct stat st;
__u64 btf_size;
int err;
err = kallsyms_find("bpf_link_fops", &link_fops_addr);
if (!ASSERT_NEQ(err, -EINVAL, "bpf_link_fops: kallsyms_fopen"))
return;
if (!ASSERT_NEQ(err, -ENOENT, "bpf_link_fops: ksym_find"))
return;
err = kallsyms_find("__per_cpu_start", &per_cpu_start_addr);
if (!ASSERT_NEQ(err, -EINVAL, "__per_cpu_start: kallsyms_fopen"))
return;
if (!ASSERT_NEQ(err, -ENOENT, "__per_cpu_start: ksym_find"))
return;
if (!ASSERT_OK(stat(btf_path, &st), "stat_btf"))
return;
btf_size = st.st_size;
skel = test_ksyms__open_and_load();
if (!ASSERT_OK_PTR(skel, "test_ksyms__open_and_load"))
return;
err = test_ksyms__attach(skel);
if (!ASSERT_OK(err, "test_ksyms__attach"))
goto cleanup;
/* trigger tracepoint */
usleep(1);
data = skel->data;
ASSERT_EQ(data->out__bpf_link_fops, link_fops_addr, "bpf_link_fops");
ASSERT_EQ(data->out__bpf_link_fops1, 0, "bpf_link_fops1");
ASSERT_EQ(data->out__btf_size, btf_size, "btf_size");
ASSERT_EQ(data->out__per_cpu_start, per_cpu_start_addr, "__per_cpu_start");
cleanup:
test_ksyms__destroy(skel);
}
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