54 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2019 Facebook */3 4#include <test_progs.h>5#include "test_ksyms.skel.h"6#include <sys/stat.h>7 8void test_ksyms(void)9{10 const char *btf_path = "/sys/kernel/btf/vmlinux";11 struct test_ksyms *skel;12 struct test_ksyms__data *data;13 __u64 link_fops_addr, per_cpu_start_addr;14 struct stat st;15 __u64 btf_size;16 int err;17 18 err = kallsyms_find("bpf_link_fops", &link_fops_addr);19 if (!ASSERT_NEQ(err, -EINVAL, "bpf_link_fops: kallsyms_fopen"))20 return;21 if (!ASSERT_NEQ(err, -ENOENT, "bpf_link_fops: ksym_find"))22 return;23 24 err = kallsyms_find("__per_cpu_start", &per_cpu_start_addr);25 if (!ASSERT_NEQ(err, -EINVAL, "__per_cpu_start: kallsyms_fopen"))26 return;27 if (!ASSERT_NEQ(err, -ENOENT, "__per_cpu_start: ksym_find"))28 return;29 30 if (!ASSERT_OK(stat(btf_path, &st), "stat_btf"))31 return;32 btf_size = st.st_size;33 34 skel = test_ksyms__open_and_load();35 if (!ASSERT_OK_PTR(skel, "test_ksyms__open_and_load"))36 return;37 38 err = test_ksyms__attach(skel);39 if (!ASSERT_OK(err, "test_ksyms__attach"))40 goto cleanup;41 42 /* trigger tracepoint */43 usleep(1);44 45 data = skel->data;46 ASSERT_EQ(data->out__bpf_link_fops, link_fops_addr, "bpf_link_fops");47 ASSERT_EQ(data->out__bpf_link_fops1, 0, "bpf_link_fops1");48 ASSERT_EQ(data->out__btf_size, btf_size, "btf_size");49 ASSERT_EQ(data->out__per_cpu_start, per_cpu_start_addr, "__per_cpu_start");50 51cleanup:52 test_ksyms__destroy(skel);53}54