forked from minio/minio
/
disk-cache-check-support_other.go
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/
disk-cache-check-support_other.go
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//go:build !windows
// +build !windows
// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"errors"
"io"
"io/ioutil"
"os"
"time"
"github.com/djherbis/atime"
)
// Return error if Atime is disabled on the O/S
func checkAtimeSupport(dir string) (err error) {
file, err := ioutil.TempFile(dir, "prefix")
if err != nil {
return
}
defer os.Remove(file.Name())
defer file.Close()
finfo1, err := os.Stat(file.Name())
if err != nil {
return
}
// add a sleep to ensure atime change is detected
time.Sleep(10 * time.Millisecond)
if _, err = io.Copy(ioutil.Discard, file); err != nil {
return
}
finfo2, err := os.Stat(file.Name())
if atime.Get(finfo2).Equal(atime.Get(finfo1)) {
return errors.New("Atime not supported")
}
return
}