mobile/internal/mobileinit/mobileinit_ios.go

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build darwin
// +build arm arm64

package mobileinit

import (
	"io"
	"log"
	"os"
	"unsafe"
)

/*
#include <asl.h>
#include <stdlib.h>

void asl_log_wrap(const char *str) {
	asl_log(NULL, NULL, ASL_LEVEL_NOTICE, "%s", str);
}
*/
import "C"

type aslWriter struct{}

func (aslWriter) Write(p []byte) (n int, err error) {
	cstr := C.CString(string(p))
	C.asl_log_wrap(cstr)
	C.free(unsafe.Pointer(cstr))
	return len(p), nil
}

func init() {
	log.SetOutput(io.MultiWriter(os.Stderr, aslWriter{}))
}