mirror of
https://github.com/Qortal/Brooklyn.git
synced 2025-02-01 07:42:18 +00:00
34 lines
902 B
C
34 lines
902 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/* Copyright (c) 2021 Facebook */
|
||
|
|
|
||
|
|
#include "vmlinux.h"
|
||
|
|
#include <bpf/bpf_helpers.h>
|
||
|
|
#include <bpf/bpf_tracing.h>
|
||
|
|
|
||
|
|
char _license[] SEC("license") = "GPL";
|
||
|
|
|
||
|
|
int null_data_vprintk_ret = 0;
|
||
|
|
int trace_vprintk_ret = 0;
|
||
|
|
int trace_vprintk_ran = 0;
|
||
|
|
|
||
|
|
SEC("fentry/__x64_sys_nanosleep")
|
||
|
|
int sys_enter(void *ctx)
|
||
|
|
{
|
||
|
|
static const char one[] = "1";
|
||
|
|
static const char three[] = "3";
|
||
|
|
static const char five[] = "5";
|
||
|
|
static const char seven[] = "7";
|
||
|
|
static const char nine[] = "9";
|
||
|
|
static const char f[] = "%pS\n";
|
||
|
|
|
||
|
|
/* runner doesn't search for \t, just ensure it compiles */
|
||
|
|
bpf_printk("\t");
|
||
|
|
|
||
|
|
trace_vprintk_ret = __bpf_vprintk("%s,%d,%s,%d,%s,%d,%s,%d,%s,%d %d\n",
|
||
|
|
one, 2, three, 4, five, 6, seven, 8, nine, 10, ++trace_vprintk_ran);
|
||
|
|
|
||
|
|
/* non-NULL fmt w/ NULL data should result in error */
|
||
|
|
null_data_vprintk_ret = bpf_trace_vprintk(f, sizeof(f), NULL, 0);
|
||
|
|
return 0;
|
||
|
|
}
|