
This PR will fix issue #81088. The current fs_windows utility reports the whole file system usage instead of specific file path. This PR fix this and walk the dir tree under the file path and collect the disk usage. Change-Id: I502ccf0af4bd07be69b61be043be616660499e4d
122 lines
2.8 KiB
Go
122 lines
2.8 KiB
Go
// +build windows
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/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package fs
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import (
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"fmt"
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"os"
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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"k8s.io/apimachinery/pkg/api/resource"
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)
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var (
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modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
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procGetDiskFreeSpaceEx = modkernel32.NewProc("GetDiskFreeSpaceExW")
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)
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// FSInfo returns (available bytes, byte capacity, byte usage, total inodes, inodes free, inode usage, error)
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// for the filesystem that path resides upon.
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func FsInfo(path string) (int64, int64, int64, int64, int64, int64, error) {
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var freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes int64
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var err error
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ret, _, err := syscall.Syscall6(
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procGetDiskFreeSpaceEx.Addr(),
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4,
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uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(path))),
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uintptr(unsafe.Pointer(&freeBytesAvailable)),
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uintptr(unsafe.Pointer(&totalNumberOfBytes)),
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uintptr(unsafe.Pointer(&totalNumberOfFreeBytes)),
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0,
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0,
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)
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if ret == 0 {
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return 0, 0, 0, 0, 0, 0, err
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}
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return freeBytesAvailable, totalNumberOfBytes, totalNumberOfBytes - freeBytesAvailable, 0, 0, 0, nil
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}
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// DiskUsage gets disk usage of specified path.
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func DiskUsage(path string) (*resource.Quantity, error) {
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info, err := os.Lstat(path)
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if err != nil {
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return nil, err
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}
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usage, err := diskUsage(path, info)
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if err != nil {
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return nil, err
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}
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used, err := resource.ParseQuantity(fmt.Sprintf("%d", usage))
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if err != nil {
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return nil, fmt.Errorf("failed to parse fs usage %d due to %v", usage, err)
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}
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used.Format = resource.BinarySI
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return &used, nil
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}
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// Always return zero since inodes is not supported on Windows.
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func Find(path string) (int64, error) {
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return 0, nil
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}
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func diskUsage(currPath string, info os.FileInfo) (int64, error) {
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var size int64
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if info.Mode()&os.ModeSymlink != 0 {
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return size, nil
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}
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size += info.Size()
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if !info.IsDir() {
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return size, nil
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}
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dir, err := os.Open(currPath)
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if err != nil {
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return size, err
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}
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defer dir.Close()
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files, err := dir.Readdir(-1)
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if err != nil {
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return size, err
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}
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for _, file := range files {
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if file.IsDir() {
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s, err := diskUsage(fmt.Sprintf("%s/%s", currPath, file.Name()), file)
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if err != nil {
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return size, err
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}
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size += s
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} else {
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size += file.Size()
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}
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}
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return size, nil
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}
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