iovisor/bcc Go binding test

main.go

// +build: linux,cgo

package main

/*
#cgo pkg-config: libbcc
#include <bcc/bpf_common.h>
#include <bcc/libbpf.h>
*/
import "C"

import (
	"fmt"
	"unsafe"
)

var CNULL = unsafe.Pointer(uintptr(0))

const BPF_PROGRAM = `
int on_sys_clone(void *ctx) {
  bpf_trace_printk("Hello, World! Here I did a sys_clone call!\n");
  return 0;
}
`

func main() {
	bpf_prog := C.CString(BPF_PROGRAM)
	defer C.free(unsafe.Pointer(bpf_prog))
	var cflags **C.char
	defer C.free(unsafe.Pointer(cflags))

	//var bpf_mod unsafe.Pointer
	// void * bpf_module_create_c_from_string(const char *text, unsigned flags, const char *cflags[], int ncflags);
	bpf_mod := C.bpf_module_create_c_from_string(bpf_prog, C.uint(0), cflags, C.int(0))
	if bpf_mod == CNULL {
		panic("Failed bpf_module_create_c_from_string")
	}
	defer C.bpf_module_destroy(bpf_mod)
	kver := C.bpf_module_kern_version(bpf_mod)
	fmt.Printf("%x\n", kver)
}