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			57 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
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			57 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// +build !windows
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/*
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 * MinIO Cloud Storage, (C) 2019-2020 MinIO, Inc.
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package cmd
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import (
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	"errors"
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	"io"
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	"io/ioutil"
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	"os"
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	"time"
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	"github.com/djherbis/atime"
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)
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// Return error if Atime is disabled on the O/S
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func checkAtimeSupport(dir string) (err error) {
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	file, err := ioutil.TempFile(dir, "prefix")
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	if err != nil {
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		return
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	}
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	defer os.Remove(file.Name())
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	defer file.Close()
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	finfo1, err := os.Stat(file.Name())
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	if err != nil {
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		return
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	}
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	// add a sleep to ensure atime change is detected
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	time.Sleep(10 * time.Millisecond)
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	if _, err = io.Copy(ioutil.Discard, file); err != nil {
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		return
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	}
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	finfo2, err := os.Stat(file.Name())
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	if atime.Get(finfo2).Equal(atime.Get(finfo1)) {
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		return errors.New("Atime not supported")
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	}
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	return
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}
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