internal static void DeleteDirectoryCore(FileSystemEntryInfo fileSystemEntryInfo, KernelTransaction transaction, string path, bool recursive, bool ignoreReadOnly, bool requireEmpty, bool continueOnNotExist, PathFormat pathFormat)
{
#region Setup
if (pathFormat == PathFormat.RelativePath)
{
Path.CheckSupportedPathFormat(path, true, true);
}
if (fileSystemEntryInfo == null)
{
// MSDN: .NET 3.5+: DirectoryNotFoundException:
// Path does not exist or could not be found.
// Path refers to a file instead of a directory.
// The specified path is invalid (for example, it is on an unmapped drive).
fileSystemEntryInfo = File.GetFileSystemEntryInfoCore(true, transaction,
Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator),
continueOnNotExist, pathFormat);
}
if (fileSystemEntryInfo == null)
{
return;
}
string pathLp = fileSystemEntryInfo.LongFullPath;
#endregion // Setup
// Do not follow mount points nor symbolic links, but do delete the reparse point itself.
// If directory is reparse point, disable recursion.
if (recursive && fileSystemEntryInfo.IsReparsePoint)
{
recursive = false;
}
// Check to see if this is a mount point, and unmount it.
if (fileSystemEntryInfo.IsMountPoint)
{
int lastError = Volume.DeleteVolumeMountPointCore(pathLp, true);
if (lastError != Win32Errors.ERROR_SUCCESS && lastError != Win32Errors.ERROR_PATH_NOT_FOUND)
{
NativeError.ThrowException(lastError, pathLp);
}
// Now it is safe to delete the actual directory.
}
if (recursive)
{
// Enumerate all file system objects.
foreach (var fsei in EnumerateFileSystemEntryInfosCore <FileSystemEntryInfo>(transaction, pathLp, Path.WildcardStarMatchAll, DirectoryEnumerationOptions.FilesAndFolders, PathFormat.LongFullPath))
{
if (fsei.IsDirectory)
{
DeleteDirectoryCore(fsei, transaction, null, true, ignoreReadOnly, requireEmpty, true, PathFormat.LongFullPath);
}
else
{
File.DeleteFileCore(transaction, fsei.LongFullPath, ignoreReadOnly, PathFormat.LongFullPath);
}
}
}
#region Remove
startRemoveDirectory:
if (!(transaction == null || !NativeMethods.IsAtLeastWindowsVista
// RemoveDirectory() / RemoveDirectoryTransacted()
// In the ANSI version of this function, the name is limited to MAX_PATH characters.
// To extend this limit to 32,767 wide characters, call the Unicode version of the function and prepend "\\?\" to the path.
// 2014-09-09: MSDN confirms LongPath usage.
// RemoveDirectory on a symbolic link will remove the link itself.
? NativeMethods.RemoveDirectory(pathLp)
: NativeMethods.RemoveDirectoryTransacted(pathLp, transaction.SafeHandle)))
{
int lastError = Marshal.GetLastWin32Error();
switch ((uint)lastError)
{
case Win32Errors.ERROR_DIR_NOT_EMPTY:
if (requireEmpty)
{
// MSDN: .NET 3.5+: IOException: The directory specified by path is not an empty directory.
throw new DirectoryNotEmptyException(pathLp);
}
goto startRemoveDirectory;
case Win32Errors.ERROR_DIRECTORY:
// MSDN: .NET 3.5+: DirectoryNotFoundException: Path refers to a file instead of a directory.
if (File.ExistsCore(false, transaction, pathLp, PathFormat.LongFullPath))
{
throw new DirectoryNotFoundException(string.Format(CultureInfo.CurrentCulture, "({0}) {1}", Win32Errors.ERROR_INVALID_PARAMETER, string.Format(CultureInfo.CurrentCulture, Resources.Target_Directory_Is_A_File, pathLp)));
}
break;
case Win32Errors.ERROR_PATH_NOT_FOUND:
if (continueOnNotExist)
{
return;
}
break;
case Win32Errors.ERROR_SHARING_VIOLATION:
// MSDN: .NET 3.5+: IOException: The directory is being used by another process or there is an open handle on the directory.
NativeError.ThrowException(lastError, pathLp);
break;
case Win32Errors.ERROR_ACCESS_DENIED:
var data = new NativeMethods.WIN32_FILE_ATTRIBUTE_DATA();
int dataInitialised = File.FillAttributeInfoCore(transaction, pathLp, ref data, false, true);
if (data.dwFileAttributes != (FileAttributes)(-1))
{
if ((data.dwFileAttributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
{
// MSDN: .NET 3.5+: IOException: The directory specified by path is read-only.
if (ignoreReadOnly)
{
// Reset directory attributes.
File.SetAttributesCore(true, transaction, pathLp, FileAttributes.Normal, true, PathFormat.LongFullPath);
goto startRemoveDirectory;
}
// MSDN: .NET 3.5+: IOException: The directory is read-only.
throw new DirectoryReadOnlyException(pathLp);
}
}
if (dataInitialised == Win32Errors.ERROR_SUCCESS)
{
// MSDN: .NET 3.5+: UnauthorizedAccessException: The caller does not have the required permission.
NativeError.ThrowException(lastError, pathLp);
}
break;
}
// MSDN: .NET 3.5+: IOException:
// A file with the same name and location specified by path exists.
// The directory specified by path is read-only, or recursive is false and path is not an empty directory.
// The directory is the application's current working directory.
// The directory contains a read-only file.
// The directory is being used by another process.
NativeError.ThrowException(lastError, pathLp);
}
#endregion // Remove
}
internal static void DeleteDirectoryCore(FileSystemEntryInfo fsEntryInfo, KernelTransaction transaction, string path, bool recursive, bool ignoreReadOnly, bool continueOnNotFound, PathFormat pathFormat)
{
#region Setup
if (fsEntryInfo == null)
{
// MSDN: .NET 3.5+: DirectoryNotFoundException:
// Path does not exist or could not be found.
// Path refers to a file instead of a directory.
// The specified path is invalid (for example, it is on an unmapped drive).
if (pathFormat == PathFormat.RelativePath)
{
Path.CheckSupportedPathFormat(path, true, true);
}
fsEntryInfo = File.GetFileSystemEntryInfoCore(true, transaction, Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator), continueOnNotFound, pathFormat);
if (fsEntryInfo == null)
{
return;
}
}
#endregion // Setup
// Do not follow mount points nor symbolic links, but do delete the reparse point itself.
// If directory is reparse point, disable recursion.
if (recursive && !fsEntryInfo.IsReparsePoint)
{
var dirs = new Stack <string>(1000);
foreach (var fsei in EnumerateFileSystemEntryInfosCore <FileSystemEntryInfo>(transaction, fsEntryInfo.LongFullPath, Path.WildcardStarMatchAll, DirectoryEnumerationOptions.FilesAndFolders | DirectoryEnumerationOptions.Recursive, PathFormat.LongFullPath))
{
if (fsei.IsDirectory)
{
// Check to see if this is a mount point, and unmount it.
// Now it is safe to delete the actual directory.
if (fsei.IsMountPoint)
{
Volume.DeleteVolumeMountPointCore(fsei.LongFullPath, false);
}
dirs.Push(fsei.LongFullPath);
}
else
{
File.DeleteFileCore(transaction, fsei.LongFullPath, ignoreReadOnly, PathFormat.LongFullPath);
}
}
while (dirs.Count > 0)
{
DeleteDirectoryCore(transaction, dirs.Pop(), ignoreReadOnly, continueOnNotFound);
}
}
// Check to see if this is a mount point, and unmount it.
// Now it is safe to delete the actual directory.
if (fsEntryInfo.IsMountPoint)
{
Volume.DeleteVolumeMountPointCore(fsEntryInfo.LongFullPath, false);
}
DeleteDirectoryCore(transaction, fsEntryInfo.LongFullPath, ignoreReadOnly, continueOnNotFound);
}
