source: code/trunk/vendor/modernc.org/libc/dmesg.go@ 823

// 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)
        }
}