46 lines
867 B
Go
46 lines
867 B
Go
|
// Copyright 2020 The Libc Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
//go:build libc.dmesg
|
||
|
|
// +build libc.dmesg
|
||
|
|
|
||
|
|
package libc // import "modernc.org/libc"
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
"strings"
|
||
|
|
"time"
|
||
|
|
)
|
||
|
|
|
||
|
|
const dmesgs = true
|
||
|
|
|
||
|
|
var (
|
||
|
|
pid = fmt.Sprintf("[%v %v] ", os.Getpid(), filepath.Base(os.Args[0]))
|
||
|
|
logf *os.File
|
||
|
|
)
|
||
|
|
|
||
|
|
func init() {
|
||
|
|
var err error
|
||
|
|
if logf, err = os.OpenFile("/tmp/libc.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY|os.O_SYNC, 0644); err != nil {
|
||
|
|
panic(err.Error())
|
||
|
|
}
|
||
|
|
|
||
|
|
dmesg("%v", time.Now())
|
||
|
|
}
|
||
|
|
|
||
|
|
func dmesg(s string, args ...interface{}) {
|
||
|
|
if s == "" {
|
||
|
|
s = strings.Repeat("%v ", len(args))
|
||
|
|
}
|
||
|
|
s = fmt.Sprintf(pid+s, args...)
|
||
|
|
switch {
|
||
|
|
case len(s) != 0 && s[len(s)-1] == '\n':
|
||
|
|
fmt.Fprint(logf, s)
|
||
|
|
default:
|
||
|
|
fmt.Fprintln(logf, s)
|
||
|
|
}
|
||
|
|
}
|