d45ba645a8
Fix inode usage calculation to use filepath.Walk instead of executing an
external find. Also calculate the disk usage while at it so we also get
rid of the external dependency of `nice` and `du`. (#95172)
This is similar to what cadvisor does since commit
046818d64c
This solves three problems:
- Counts number of inodes correct when there are hardlinks (#96114)
- Makes kubelet work without GNU findutils (#95186)
- Makes kubelet work without GNU coreutils (#95172)
118 lines
2.8 KiB
Go
118 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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"path/filepath"
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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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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type UsageInfo struct {
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Bytes int64
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Inodes int64
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}
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// Info 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 Info(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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// The equivalent linux call supports calls against files but the syscall for windows
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// fails for files with error code: The directory name is invalid. (#99173)
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// https://docs.microsoft.com/en-us/windows/win32/debug/system-error-codes--0-499-
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// By always ensuring the directory path we meet all uses cases of this function
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path = filepath.Dir(path)
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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) (UsageInfo, error) {
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var usage UsageInfo
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info, err := os.Lstat(path)
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if err != nil {
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return usage, err
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}
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usage.Bytes, err = diskUsage(path, info)
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return usage, err
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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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