minio/pkg/disk/stat_windows.go
Harshavardhana a8a935f5fd Improve disk code to return back disk StatFS{} structure
```
StatFS {
Total int64
Free int64
FSType string
}
```

Provides more information in a cross platform way.
2015-10-17 20:19:26 -07:00

59 lines
2.2 KiB
Go

// +build windows
/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package disk
import (
"syscall"
"unsafe"
)
// Stat returns total and free bytes available in a directory, e.g. `C:\`.
// It returns free space available to the user (including quota limitations)
//
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa364937(v=vs.85).aspx
func Stat(path string) (statfs StatFS, err error) {
dll := syscall.MustLoadDLL("kernel32.dll")
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa364937(v=vs.85).aspx
// Retrieves information about the amount of space that is available on a disk volume,
// which is the total amount of space, the total amount of free space, and the total
// amount of free space available to the user that is associated with the calling thread.
GetDiskFreeSpaceEx := dll.MustFindProc("GetDiskFreeSpaceExW")
lpFreeBytesAvailable := int64(0)
lpTotalNumberOfBytes := int64(0)
lpTotalNumberOfFreeBytes := int64(0)
// Extract values safely
// BOOL WINAPI GetDiskFreeSpaceEx(
// _In_opt_ LPCTSTR lpDirectoryName,
// _Out_opt_ PULARGE_INTEGER lpFreeBytesAvailable,
// _Out_opt_ PULARGE_INTEGER lpTotalNumberOfBytes,
// _Out_opt_ PULARGE_INTEGER lpTotalNumberOfFreeBytes
// );
_, _, _ = GetDiskFreeSpaceEx.Call(uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(path))),
uintptr(unsafe.Pointer(&lpFreeBytesAvailable)),
uintptr(unsafe.Pointer(&lpTotalNumberOfBytes)),
uintptr(unsafe.Pointer(&lpTotalNumberOfFreeBytes)))
statfs = StatFS{}
statfs.Total = int64(lpTotalNumberOfBytes)
statfs.Free = int64(lpFreeBytesAvailable)
statfs.FSType = getFSType(path)
return statfs, nil
}