mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-27 08:40:23 +00:00
292 lines
10 KiB
Go
292 lines
10 KiB
Go
// +build windows
|
|
|
|
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
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 mount
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"k8s.io/klog"
|
|
utilexec "k8s.io/utils/exec"
|
|
"k8s.io/utils/keymutex"
|
|
utilpath "k8s.io/utils/path"
|
|
)
|
|
|
|
// Mounter provides the default implementation of mount.Interface
|
|
// for the windows platform. This implementation assumes that the
|
|
// kubelet is running in the host's root mount namespace.
|
|
type Mounter struct {
|
|
mounterPath string
|
|
}
|
|
|
|
// New returns a mount.Interface for the current system.
|
|
// It provides options to override the default mounter behavior.
|
|
// mounterPath allows using an alternative to `/bin/mount` for mounting.
|
|
func New(mounterPath string) Interface {
|
|
return &Mounter{
|
|
mounterPath: mounterPath,
|
|
}
|
|
}
|
|
|
|
// acquire lock for smb mount
|
|
var getSMBMountMutex = keymutex.NewHashed(0)
|
|
|
|
// Mount : mounts source to target with given options.
|
|
// currently only supports cifs(smb), bind mount(for disk)
|
|
func (mounter *Mounter) Mount(source string, target string, fstype string, options []string) error {
|
|
return mounter.MountSensitive(source, target, fstype, options, nil /* sensitiveOptions */)
|
|
}
|
|
|
|
// MountSensitive is the same as Mount() but this method allows
|
|
// sensitiveOptions to be passed in a separate parameter from the normal
|
|
// mount options and ensures the sensitiveOptions are never logged. This
|
|
// method should be used by callers that pass sensitive material (like
|
|
// passwords) as mount options.
|
|
func (mounter *Mounter) MountSensitive(source string, target string, fstype string, options []string, sensitiveOptions []string) error {
|
|
target = NormalizeWindowsPath(target)
|
|
sanitizedOptionsForLogging := sanitizedOptionsForLogging(options, sensitiveOptions)
|
|
|
|
if source == "tmpfs" {
|
|
klog.V(3).Infof("mounting source (%q), target (%q), with options (%q)", source, target, sanitizedOptionsForLogging)
|
|
return os.MkdirAll(target, 0755)
|
|
}
|
|
|
|
parentDir := filepath.Dir(target)
|
|
if err := os.MkdirAll(parentDir, 0755); err != nil {
|
|
return err
|
|
}
|
|
|
|
klog.V(4).Infof("mount options(%q) source:%q, target:%q, fstype:%q, begin to mount",
|
|
sanitizedOptionsForLogging, source, target, fstype)
|
|
bindSource := source
|
|
|
|
if bind, _, _, _ := MakeBindOptsSensitive(options, sensitiveOptions); bind {
|
|
bindSource = NormalizeWindowsPath(source)
|
|
} else {
|
|
allOptions := []string{}
|
|
allOptions = append(allOptions, options...)
|
|
allOptions = append(allOptions, sensitiveOptions...)
|
|
if len(allOptions) < 2 {
|
|
klog.Warningf("mount options(%q) command number(%d) less than 2, source:%q, target:%q, skip mounting",
|
|
sanitizedOptionsForLogging, len(allOptions), source, target)
|
|
return nil
|
|
}
|
|
|
|
// currently only cifs mount is supported
|
|
if strings.ToLower(fstype) != "cifs" {
|
|
return fmt.Errorf("only cifs mount is supported now, fstype: %q, mounting source (%q), target (%q), with options (%q)", fstype, source, target, sanitizedOptionsForLogging)
|
|
}
|
|
|
|
// lock smb mount for the same source
|
|
getSMBMountMutex.LockKey(source)
|
|
defer getSMBMountMutex.UnlockKey(source)
|
|
|
|
if output, err := newSMBMapping(allOptions[0], allOptions[1], source); err != nil {
|
|
if isSMBMappingExist(source) {
|
|
klog.V(2).Infof("SMB Mapping(%s) already exists, now begin to remove and remount", source)
|
|
if output, err := removeSMBMapping(source); err != nil {
|
|
return fmt.Errorf("Remove-SmbGlobalMapping failed: %v, output: %q", err, output)
|
|
}
|
|
if output, err := newSMBMapping(allOptions[0], allOptions[1], source); err != nil {
|
|
return fmt.Errorf("New-SmbGlobalMapping remount failed: %v, output: %q", err, output)
|
|
}
|
|
} else {
|
|
return fmt.Errorf("New-SmbGlobalMapping failed: %v, output: %q", err, output)
|
|
}
|
|
}
|
|
}
|
|
|
|
if output, err := exec.Command("cmd", "/c", "mklink", "/D", target, bindSource).CombinedOutput(); err != nil {
|
|
klog.Errorf("mklink failed: %v, source(%q) target(%q) output: %q", err, bindSource, target, string(output))
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// do the SMB mount with username, password, remotepath
|
|
// return (output, error)
|
|
func newSMBMapping(username, password, remotepath string) (string, error) {
|
|
if username == "" || password == "" || remotepath == "" {
|
|
return "", fmt.Errorf("invalid parameter(username: %s, password: %s, remoteapth: %s)", username, sensitiveOptionsRemoved, remotepath)
|
|
}
|
|
|
|
// use PowerShell Environment Variables to store user input string to prevent command line injection
|
|
// https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_environment_variables?view=powershell-5.1
|
|
cmdLine := `$PWord = ConvertTo-SecureString -String $Env:smbpassword -AsPlainText -Force` +
|
|
`;$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $Env:smbuser, $PWord` +
|
|
`;New-SmbGlobalMapping -RemotePath $Env:smbremotepath -Credential $Credential`
|
|
cmd := exec.Command("powershell", "/c", cmdLine)
|
|
cmd.Env = append(os.Environ(),
|
|
fmt.Sprintf("smbuser=%s", username),
|
|
fmt.Sprintf("smbpassword=%s", password),
|
|
fmt.Sprintf("smbremotepath=%s", remotepath))
|
|
|
|
output, err := cmd.CombinedOutput()
|
|
return string(output), err
|
|
}
|
|
|
|
// check whether remotepath is already mounted
|
|
func isSMBMappingExist(remotepath string) bool {
|
|
cmd := exec.Command("powershell", "/c", `Get-SmbGlobalMapping -RemotePath $Env:smbremotepath`)
|
|
cmd.Env = append(os.Environ(), fmt.Sprintf("smbremotepath=%s", remotepath))
|
|
_, err := cmd.CombinedOutput()
|
|
return err == nil
|
|
}
|
|
|
|
// remove SMB mapping
|
|
func removeSMBMapping(remotepath string) (string, error) {
|
|
cmd := exec.Command("powershell", "/c", `Remove-SmbGlobalMapping -RemotePath $Env:smbremotepath -Force`)
|
|
cmd.Env = append(os.Environ(), fmt.Sprintf("smbremotepath=%s", remotepath))
|
|
output, err := cmd.CombinedOutput()
|
|
return string(output), err
|
|
}
|
|
|
|
// Unmount unmounts the target.
|
|
func (mounter *Mounter) Unmount(target string) error {
|
|
klog.V(4).Infof("azureMount: Unmount target (%q)", target)
|
|
target = NormalizeWindowsPath(target)
|
|
if output, err := exec.Command("cmd", "/c", "rmdir", target).CombinedOutput(); err != nil {
|
|
klog.Errorf("rmdir failed: %v, output: %q", err, string(output))
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// List returns a list of all mounted filesystems. todo
|
|
func (mounter *Mounter) List() ([]MountPoint, error) {
|
|
return []MountPoint{}, nil
|
|
}
|
|
|
|
// IsLikelyNotMountPoint determines if a directory is not a mountpoint.
|
|
func (mounter *Mounter) IsLikelyNotMountPoint(file string) (bool, error) {
|
|
stat, err := os.Lstat(file)
|
|
if err != nil {
|
|
return true, err
|
|
}
|
|
// If current file is a symlink, then it is a mountpoint.
|
|
if stat.Mode()&os.ModeSymlink != 0 {
|
|
target, err := os.Readlink(file)
|
|
if err != nil {
|
|
return true, fmt.Errorf("readlink error: %v", err)
|
|
}
|
|
exists, err := utilpath.Exists(utilpath.CheckFollowSymlink, target)
|
|
if err != nil {
|
|
return true, err
|
|
}
|
|
return !exists, nil
|
|
}
|
|
|
|
return true, nil
|
|
}
|
|
|
|
// GetMountRefs : empty implementation here since there is no place to query all mount points on Windows
|
|
func (mounter *Mounter) GetMountRefs(pathname string) ([]string, error) {
|
|
windowsPath := NormalizeWindowsPath(pathname)
|
|
pathExists, pathErr := PathExists(windowsPath)
|
|
if !pathExists {
|
|
return []string{}, nil
|
|
} else if IsCorruptedMnt(pathErr) {
|
|
klog.Warningf("GetMountRefs found corrupted mount at %s, treating as unmounted path", windowsPath)
|
|
return []string{}, nil
|
|
} else if pathErr != nil {
|
|
return nil, fmt.Errorf("error checking path %s: %v", windowsPath, pathErr)
|
|
}
|
|
return []string{pathname}, nil
|
|
}
|
|
|
|
func (mounter *SafeFormatAndMount) formatAndMountSensitive(source string, target string, fstype string, options []string, sensitiveOptions []string) error {
|
|
// Try to mount the disk
|
|
klog.V(4).Infof("Attempting to formatAndMount disk: %s %s %s", fstype, source, target)
|
|
|
|
if err := ValidateDiskNumber(source); err != nil {
|
|
klog.Errorf("diskMount: formatAndMount failed, err: %v", err)
|
|
return err
|
|
}
|
|
|
|
if len(fstype) == 0 {
|
|
// Use 'NTFS' as the default
|
|
fstype = "NTFS"
|
|
}
|
|
|
|
// format disk if it is unformatted(raw)
|
|
cmd := fmt.Sprintf("Get-Disk -Number %s | Where partitionstyle -eq 'raw' | Initialize-Disk -PartitionStyle MBR -PassThru"+
|
|
" | New-Partition -AssignDriveLetter -UseMaximumSize | Format-Volume -FileSystem %s -Confirm:$false", source, fstype)
|
|
if output, err := mounter.Exec.Command("powershell", "/c", cmd).CombinedOutput(); err != nil {
|
|
return fmt.Errorf("diskMount: format disk failed, error: %v, output: %q", err, string(output))
|
|
}
|
|
klog.V(4).Infof("diskMount: Disk successfully formatted, disk: %q, fstype: %q", source, fstype)
|
|
|
|
driveLetter, err := getDriveLetterByDiskNumber(source, mounter.Exec)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
driverPath := driveLetter + ":"
|
|
target = NormalizeWindowsPath(target)
|
|
klog.V(4).Infof("Attempting to formatAndMount disk: %s %s %s", fstype, driverPath, target)
|
|
if output, err := mounter.Exec.Command("cmd", "/c", "mklink", "/D", target, driverPath).CombinedOutput(); err != nil {
|
|
klog.Errorf("mklink failed: %v, output: %q", err, string(output))
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Get drive letter according to windows disk number
|
|
func getDriveLetterByDiskNumber(diskNum string, exec utilexec.Interface) (string, error) {
|
|
cmd := fmt.Sprintf("(Get-Partition -DiskNumber %s).DriveLetter", diskNum)
|
|
output, err := exec.Command("powershell", "/c", cmd).CombinedOutput()
|
|
if err != nil {
|
|
return "", fmt.Errorf("azureMount: Get Drive Letter failed: %v, output: %q", err, string(output))
|
|
}
|
|
if len(string(output)) < 1 {
|
|
return "", fmt.Errorf("azureMount: Get Drive Letter failed, output is empty")
|
|
}
|
|
return string(output)[:1], nil
|
|
}
|
|
|
|
// getAllParentLinks walks all symbolic links and return all the parent targets recursively
|
|
func getAllParentLinks(path string) ([]string, error) {
|
|
const maxIter = 255
|
|
links := []string{}
|
|
for {
|
|
links = append(links, path)
|
|
if len(links) > maxIter {
|
|
return links, fmt.Errorf("unexpected length of parent links: %v", links)
|
|
}
|
|
|
|
fi, err := os.Lstat(path)
|
|
if err != nil {
|
|
return links, fmt.Errorf("Lstat: %v", err)
|
|
}
|
|
if fi.Mode()&os.ModeSymlink == 0 {
|
|
break
|
|
}
|
|
|
|
path, err = os.Readlink(path)
|
|
if err != nil {
|
|
return links, fmt.Errorf("Readlink error: %v", err)
|
|
}
|
|
}
|
|
|
|
return links, nil
|
|
}
|