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