storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/cmd/disk-cache-check-support_windows.go (about)

     1  //go:build windows
     2  // +build windows
     3  
     4  /*
     5   * MinIO Cloud Storage, (C) 2019-2020 MinIO, Inc.
     6   *
     7   * Licensed under the Apache License, Version 2.0 (the "License");
     8   * you may not use this file except in compliance with the License.
     9   * You may obtain a copy of the License at
    10   *
    11   *     http://www.apache.org/licenses/LICENSE-2.0
    12   *
    13   * Unless required by applicable law or agreed to in writing, software
    14   * distributed under the License is distributed on an "AS IS" BASIS,
    15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    16   * See the License for the specific language governing permissions and
    17   * limitations under the License.
    18   */
    19  
    20  package cmd
    21  
    22  import (
    23  	"errors"
    24  	"io/ioutil"
    25  	"os"
    26  
    27  	"github.com/djherbis/atime"
    28  	"golang.org/x/sys/windows/registry"
    29  )
    30  
    31  // Return error if Atime is disabled on the O/S
    32  func checkAtimeSupport(dir string) (err error) {
    33  	file, err := ioutil.TempFile(dir, "prefix")
    34  	if err != nil {
    35  		return
    36  	}
    37  	defer os.Remove(file.Name())
    38  	defer file.Close()
    39  	finfo1, err := os.Stat(file.Name())
    40  	if err != nil {
    41  		return
    42  	}
    43  	atime.Get(finfo1)
    44  
    45  	k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SYSTEM\CurrentControlSet\Control\FileSystem`, registry.QUERY_VALUE)
    46  	if err != nil {
    47  		return
    48  	}
    49  	defer k.Close()
    50  
    51  	setting, _, err := k.GetIntegerValue("NtfsDisableLastAccessUpdate")
    52  	if err != nil {
    53  		return
    54  	}
    55  
    56  	lowSetting := setting & 0xFFFF
    57  	if lowSetting != uint64(0x0000) && lowSetting != uint64(0x0002) {
    58  		return errors.New("Atime not supported")
    59  	}
    60  	return
    61  }