62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/* Copyright (c) 2019 Facebook */
|
||
|
|
|
||
|
|
#include <test_progs.h>
|
||
|
|
#include "test_ksyms.skel.h"
|
||
|
|
#include <sys/stat.h>
|
||
|
|
|
||
|
|
static int duration;
|
||
|
|
|
||
|
|
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 (CHECK(err == -EINVAL, "kallsyms_fopen", "failed to open: %d\n", errno))
|
||
|
|
return;
|
||
|
|
if (CHECK(err == -ENOENT, "ksym_find", "symbol 'bpf_link_fops' not found\n"))
|
||
|
|
return;
|
||
|
|
|
||
|
|
err = kallsyms_find("__per_cpu_start", &per_cpu_start_addr);
|
||
|
|
if (CHECK(err == -EINVAL, "kallsyms_fopen", "failed to open: %d\n", errno))
|
||
|
|
return;
|
||
|
|
if (CHECK(err == -ENOENT, "ksym_find", "symbol 'per_cpu_start' not found\n"))
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (CHECK(stat(btf_path, &st), "stat_btf", "err %d\n", errno))
|
||
|
|
return;
|
||
|
|
btf_size = st.st_size;
|
||
|
|
|
||
|
|
skel = test_ksyms__open_and_load();
|
||
|
|
if (CHECK(!skel, "skel_open", "failed to open and load skeleton\n"))
|
||
|
|
return;
|
||
|
|
|
||
|
|
err = test_ksyms__attach(skel);
|
||
|
|
if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
|
||
|
|
goto cleanup;
|
||
|
|
|
||
|
|
/* trigger tracepoint */
|
||
|
|
usleep(1);
|
||
|
|
|
||
|
|
data = skel->data;
|
||
|
|
CHECK(data->out__bpf_link_fops != link_fops_addr, "bpf_link_fops",
|
||
|
|
"got 0x%llx, exp 0x%llx\n",
|
||
|
|
data->out__bpf_link_fops, link_fops_addr);
|
||
|
|
CHECK(data->out__bpf_link_fops1 != 0, "bpf_link_fops1",
|
||
|
|
"got %llu, exp %llu\n", data->out__bpf_link_fops1, (__u64)0);
|
||
|
|
CHECK(data->out__btf_size != btf_size, "btf_size",
|
||
|
|
"got %llu, exp %llu\n", data->out__btf_size, btf_size);
|
||
|
|
CHECK(data->out__per_cpu_start != per_cpu_start_addr, "__per_cpu_start",
|
||
|
|
"got %llu, exp %llu\n", data->out__per_cpu_start,
|
||
|
|
per_cpu_start_addr);
|
||
|
|
|
||
|
|
cleanup:
|
||
|
|
test_ksyms__destroy(skel);
|
||
|
|
}
|