64 lines
2 KiB
Go
64 lines
2 KiB
Go
//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 mountinfo
|
|
|
|
import (
|
|
"path/filepath"
|
|
"sync"
|
|
|
|
"golang.org/x/sys/windows"
|
|
)
|
|
|
|
// CheckCrossDevice - check if any input path has multiple sub-mounts.
|
|
// this is a dummy function and returns nil for now.
|
|
func CheckCrossDevice(paths []string) error {
|
|
return nil
|
|
}
|
|
|
|
// mountPointCache contains results of IsLikelyMountPoint
|
|
var mountPointCache sync.Map
|
|
|
|
// IsLikelyMountPoint determines if a directory is a mountpoint.
|
|
func IsLikelyMountPoint(path string) bool {
|
|
path = filepath.Dir(path)
|
|
if v, ok := mountPointCache.Load(path); ok {
|
|
return v.(bool)
|
|
}
|
|
wpath, _ := windows.UTF16PtrFromString(path)
|
|
wvolume := make([]uint16, len(path)+1)
|
|
|
|
if err := windows.GetVolumePathName(wpath, &wvolume[0], uint32(len(wvolume))); err != nil {
|
|
mountPointCache.Store(path, false)
|
|
return false
|
|
}
|
|
|
|
switch windows.GetDriveType(&wvolume[0]) {
|
|
case windows.DRIVE_FIXED, windows.DRIVE_REMOVABLE, windows.DRIVE_REMOTE, windows.DRIVE_RAMDISK:
|
|
// Recognize "fixed", "removable", "remote" and "ramdisk" drives as proper drives
|
|
// which can be treated as an actual mount-point, rest can be ignored.
|
|
// https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getdrivetypew
|
|
mountPointCache.Store(path, true)
|
|
return true
|
|
}
|
|
mountPointCache.Store(path, false)
|
|
return false
|
|
}
|