storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/pkg/disk/type_windows.go (about)

     1  //go:build windows
     2  // +build windows
     3  
     4  /*
     5   * MinIO Cloud Storage, (C) 2015 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 disk
    21  
    22  import (
    23  	"path/filepath"
    24  	"syscall"
    25  	"unsafe"
    26  )
    27  
    28  var (
    29  	// GetVolumeInformation provides windows drive volume information.
    30  	GetVolumeInformation = kernel32.NewProc("GetVolumeInformationW")
    31  )
    32  
    33  // getFSType returns the filesystem type of the underlying mounted filesystem
    34  func getFSType(path string) string {
    35  	volumeNameSize, nFileSystemNameSize := uint32(260), uint32(260)
    36  	var lpVolumeSerialNumber uint32
    37  	var lpFileSystemFlags, lpMaximumComponentLength uint32
    38  	var lpFileSystemNameBuffer, volumeName [260]uint16
    39  	var ps = syscall.StringToUTF16Ptr(filepath.VolumeName(path))
    40  
    41  	// Extract values safely
    42  	// BOOL WINAPI GetVolumeInformation(
    43  	// _In_opt_  LPCTSTR lpRootPathName,
    44  	// _Out_opt_ LPTSTR  lpVolumeNameBuffer,
    45  	// _In_      DWORD   nVolumeNameSize,
    46  	// _Out_opt_ LPDWORD lpVolumeSerialNumber,
    47  	// _Out_opt_ LPDWORD lpMaximumComponentLength,
    48  	// _Out_opt_ LPDWORD lpFileSystemFlags,
    49  	// _Out_opt_ LPTSTR  lpFileSystemNameBuffer,
    50  	// _In_      DWORD   nFileSystemNameSize
    51  	// );
    52  
    53  	_, _, _ = GetVolumeInformation.Call(uintptr(unsafe.Pointer(ps)),
    54  		uintptr(unsafe.Pointer(&volumeName)),
    55  		uintptr(volumeNameSize),
    56  		uintptr(unsafe.Pointer(&lpVolumeSerialNumber)),
    57  		uintptr(unsafe.Pointer(&lpMaximumComponentLength)),
    58  		uintptr(unsafe.Pointer(&lpFileSystemFlags)),
    59  		uintptr(unsafe.Pointer(&lpFileSystemNameBuffer)),
    60  		uintptr(nFileSystemNameSize))
    61  
    62  	return syscall.UTF16ToString(lpFileSystemNameBuffer[:])
    63  }