Cloudpods/backend/pkg/util/kmsg/kmsg.go

// Copyright 2019 Yunion
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package kmsg

import (
	"log"
	"os"
	"strings"
)

func Log(msg string) {
	f, err := os.OpenFile("/dev/kmsg", os.O_WRONLY, 0)
	if err != nil {
		// This will likely fail without root privileges
		log.Fatalf("failed to open /dev/kmsg: %v", err)
	}
	defer f.Close()

	if !strings.HasSuffix(msg, "\n") {
		msg = msg + "\n"
	}

	f.WriteString(msg)
}