internal static SafeFileHandle CreateFileCore(KernelTransaction transaction, bool? isFolder, string path, ExtendedFileAttributes attributes, FileSecurity fileSecurity, FileMode fileMode, FileSystemRights fileSystemRights, FileShare fileShare, bool checkPath, bool continueOnException, PathFormat pathFormat)
{
if (checkPath && pathFormat == PathFormat.RelativePath)
Path.CheckSupportedPathFormat(path, true, true);
// When isFile == null, we're working with a device.
// When opening a VOLUME or removable media drive (for example, a floppy disk drive or flash memory thumb drive),
// the path string should be the following form: "\\.\X:"
// Do not use a trailing backslash ('\'), which indicates the root.
var pathLp = Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator);
// CreateFileXxx() does not support FileMode.Append mode.
var isAppend = fileMode == FileMode.Append;
if (isAppend)
{
fileMode = FileMode.OpenOrCreate;
fileSystemRights |= FileSystemRights.AppendData;
}
if (null != fileSecurity)
fileSystemRights |= (FileSystemRights)SECURITY_INFORMATION.UNPROTECTED_SACL_SECURITY_INFORMATION;
using ((fileSystemRights & (FileSystemRights)SECURITY_INFORMATION.UNPROTECTED_SACL_SECURITY_INFORMATION) != 0 || (fileSystemRights & (FileSystemRights) SECURITY_INFORMATION.UNPROTECTED_DACL_SECURITY_INFORMATION) != 0 ? new PrivilegeEnabler(Privilege.Security) : null)
using (var securityAttributes = new Security.NativeMethods.SecurityAttributes(fileSecurity))
{
var safeHandle = transaction == null || !NativeMethods.IsAtLeastWindowsVista
// CreateFile() / CreateFileTransacted()
// 2013-01-13: MSDN confirms LongPath usage.
? NativeMethods.CreateFile(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero)
: NativeMethods.CreateFileTransacted(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero, transaction.SafeHandle, IntPtr.Zero, IntPtr.Zero);
var lastError = Marshal.GetLastWin32Error();
NativeMethods.CloseHandleAndPossiblyThrowException(safeHandle, lastError, isFolder, path, !continueOnException);
if (isAppend)
{
var success = NativeMethods.SetFilePointerEx(safeHandle, 0, IntPtr.Zero, SeekOrigin.End);
lastError = Marshal.GetLastWin32Error();
if (!success)
{
NativeMethods.CloseHandleAndPossiblyThrowException(safeHandle, lastError, isFolder, path, !continueOnException);
return null;
}
}
return safeHandle;
}
}
public KernelTransaction(ObjectSecurity securityDescriptor, uint timeout, string description)
{
if (!NativeMethods.IsAtLeastWindowsVista)
throw new PlatformNotSupportedException(Resources.RequiresWindowsVistaOrHigher);
using (var securityAttributes = new Security.NativeMethods.SecurityAttributes(securityDescriptor))
{
_hTrans = NativeMethods.CreateTransaction(securityAttributes, IntPtr.Zero, 0, 0, 0, timeout, description);
int lastError = Marshal.GetLastWin32Error();
NativeMethods.IsValidHandle(_hTrans, lastError);
}
}
public KernelTransaction(ObjectSecurity securityDescriptor, int timeout, string description)
{
if (!NativeMethods.IsAtLeastWindowsVista)
{
throw new PlatformNotSupportedException(Resources.Requires_Windows_Vista_Or_Higher);
}
using (var securityAttributes = new Security.NativeMethods.SecurityAttributes(securityDescriptor))
{
_hTrans = NativeMethods.CreateTransaction(securityAttributes, IntPtr.Zero, 0, 0, 0, timeout, description);
int lastError = Marshal.GetLastWin32Error();
NativeMethods.IsValidHandle(_hTrans, lastError);
}
}
public KernelTransaction(ObjectSecurity securityDescriptor, int timeout, string description)
{
if (!NativeMethods.IsAtLeastWindowsVista)
{
throw new PlatformNotSupportedException(new Win32Exception((int)Win32Errors.ERROR_OLD_WIN_VERSION).Message);
}
using (var securityAttributes = new Security.NativeMethods.SecurityAttributes(securityDescriptor))
{
_hTrans = NativeMethods.CreateTransaction(securityAttributes, IntPtr.Zero, 0, 0, 0, timeout, description);
int lastError = Marshal.GetLastWin32Error();
NativeMethods.IsValidHandle(_hTrans, lastError);
}
}
internal static extern SafeKernelTransactionHandle CreateTransaction([MarshalAs(UnmanagedType.LPStruct)] Security.NativeMethods.SecurityAttributes lpTransactionAttributes, IntPtr uow, [MarshalAs(UnmanagedType.U4)] uint createOptions, [MarshalAs(UnmanagedType.U4)] uint isolationLevel, [MarshalAs(UnmanagedType.U4)] uint isolationFlags, [MarshalAs(UnmanagedType.U4)] int timeout, [MarshalAs(UnmanagedType.LPWStr)] string description);
internal static SafeFileHandle CreateFileCore(KernelTransaction transaction, string path, ExtendedFileAttributes attributes, FileSecurity fileSecurity, FileMode fileMode, FileSystemRights fileSystemRights, FileShare fileShare, bool checkPath, PathFormat pathFormat)
{
if (checkPath && pathFormat == PathFormat.RelativePath)
{
Path.CheckSupportedPathFormat(path, true, true);
}
// When isFile == null, we're working with a device.
// When opening a VOLUME or removable media drive (for example, a floppy disk drive or flash memory thumb drive),
// the path string should be the following form: "\\.\X:"
// Do not use a trailing backslash (\), which indicates the root.
var pathLp = Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator);
PrivilegeEnabler privilegeEnabler = null;
var isAppend = fileMode == FileMode.Append;
// CreateFileXxx() does not support FileMode.Append mode.
if (isAppend)
{
fileMode = FileMode.OpenOrCreate;
fileSystemRights &= FileSystemRights.AppendData; // Add right.
}
if (fileSecurity != null)
{
fileSystemRights |= (FileSystemRights)0x1000000; // Set right.
}
// AccessSystemSecurity = 0x1000000 AccessSystemAcl access type.
// MaximumAllowed = 0x2000000 MaximumAllowed access type.
if ((fileSystemRights & (FileSystemRights)0x1000000) != 0 ||
(fileSystemRights & (FileSystemRights)0x2000000) != 0)
{
privilegeEnabler = new PrivilegeEnabler(Privilege.Security);
}
using (privilegeEnabler)
using (var securityAttributes = new Security.NativeMethods.SecurityAttributes(fileSecurity))
{
var handle = transaction == null || !NativeMethods.IsAtLeastWindowsVista
// CreateFile() / CreateFileTransacted()
// 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.
// 2013-01-13: MSDN confirms LongPath usage.
? NativeMethods.CreateFile(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero)
: NativeMethods.CreateFileTransacted(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero, transaction.SafeHandle, IntPtr.Zero, IntPtr.Zero);
var lastError = Marshal.GetLastWin32Error();
if (handle.IsInvalid)
{
handle.Close();
NativeError.ThrowException(lastError, pathLp);
}
if (isAppend)
{
var stream = new FileStream(handle, FileAccess.Write, NativeMethods.DefaultFileBufferSize, (attributes & ExtendedFileAttributes.Overlapped) != 0);
stream.Seek(0, SeekOrigin.End);
}
return(handle);
}
}
internal static extern bool CreateDirectoryEx([MarshalAs(UnmanagedType.LPWStr)] string lpTemplateDirectory, [MarshalAs(UnmanagedType.LPWStr)] string lpPathName, [MarshalAs(UnmanagedType.LPStruct)] Security.NativeMethods.SecurityAttributes lpSecurityAttributes);
internal static extern bool CreateDirectoryTransacted([MarshalAs(UnmanagedType.LPWStr)] string lpTemplateDirectory, [MarshalAs(UnmanagedType.LPWStr)] string lpNewDirectory, [MarshalAs(UnmanagedType.LPStruct)] Security.NativeMethods.SecurityAttributes lpSecurityAttributes, SafeHandle hTransaction);
internal static DirectoryInfo CreateDirectoryInternal(KernelTransaction transaction, string path, string templatePath, ObjectSecurity directorySecurity, bool compress, PathFormat pathFormat)
{
if (pathFormat == PathFormat.RelativePath)
{
if (path != null && path[0] == Path.VolumeSeparatorChar)
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Resources.PathFormatUnsupported, path));
if (templatePath != null && templatePath[0] == Path.VolumeSeparatorChar)
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Resources.PathFormatUnsupported, templatePath));
Path.CheckValidPath(path, true, true);
Path.CheckValidPath(templatePath, true, true);
}
else
// MSDN:. NET 3.5+: NotSupportedException: Path contains a colon character (:) that is not part of a drive label ("C:\").
Path.CheckValidPath(path, false, false);
string pathLp = Path.GetExtendedLengthPathInternal(transaction, path, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator);
// Return DirectoryInfo instance if the directory specified by path already exists.
if (File.ExistsInternal(true, transaction, pathLp, PathFormat.LongFullPath))
return new DirectoryInfo(transaction, pathLp, PathFormat.LongFullPath);
// MSDN: .NET 3.5+: IOException: The directory specified by path is a file or the network name was not found.
if (File.ExistsInternal(false, transaction, pathLp, PathFormat.LongFullPath))
NativeError.ThrowException(Win32Errors.ERROR_ALREADY_EXISTS, pathLp);
string templatePathLp = Utils.IsNullOrWhiteSpace(templatePath)
? null
: Path.GetExtendedLengthPathInternal(transaction, templatePath, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator);
#region Construct Full Path
string longPathPrefix = Path.IsUncPath(path, false) ? Path.LongPathUncPrefix : Path.LongPathPrefix;
path = Path.GetRegularPathInternal(pathLp, GetFullPathOptions.None);
int length = path.Length;
if (length >= 2 && Path.IsDVsc(path[length - 1], false))
--length;
int rootLength = Path.GetRootLength(path, false);
if (length == 2 && Path.IsDVsc(path[1], false))
throw new ArgumentException(Resources.CannotCreateDirectory, path);
// Check if directories are missing.
Stack<string> list = new Stack<string>(100);
if (length > rootLength)
{
for (int index = length - 1; index >= rootLength; --index)
{
string path1 = path.Substring(0, index + 1);
string path2 = longPathPrefix + path1.TrimStart('\\');
if (!File.ExistsInternal(true, transaction, path2, PathFormat.LongFullPath))
list.Push(path2);
while (index > rootLength && !Path.IsDVsc(path[index], false))
--index;
}
}
#endregion // Construct Full Path
// Directory security.
using (Security.NativeMethods.SecurityAttributes securityAttributes = new Security.NativeMethods.SecurityAttributes(directorySecurity))
{
// Create the directory paths.
while (list.Count > 0)
{
string folderLp = list.Pop();
// In the ANSI version of this function, the name is limited to 248 characters.
// To extend this limit to 32,767 wide characters, call the Unicode version of the function and prepend "\\?\" to the path.
// 2013-01-13: MSDN confirms LongPath usage.
bool createOk = (transaction == null || !NativeMethods.IsAtLeastWindowsVista
? (templatePathLp == null
? NativeMethods.CreateDirectory(folderLp, securityAttributes)
: NativeMethods.CreateDirectoryEx(templatePathLp, folderLp, securityAttributes))
: NativeMethods.CreateDirectoryTransacted(templatePathLp, folderLp, securityAttributes, transaction.SafeHandle));
if (!createOk)
{
int lastError = Marshal.GetLastWin32Error();
switch ((uint)lastError)
{
// MSDN: .NET 3.5+: If the directory already exists, this method does nothing.
// MSDN: .NET 3.5+: IOException: The directory specified by path is a file.
case Win32Errors.ERROR_ALREADY_EXISTS:
if (File.ExistsInternal(false, transaction, pathLp, PathFormat.LongFullPath))
NativeError.ThrowException(lastError, pathLp);
if (File.ExistsInternal(false, transaction, folderLp, PathFormat.LongFullPath))
NativeError.ThrowException(Win32Errors.ERROR_PATH_NOT_FOUND, folderLp);
break;
case Win32Errors.ERROR_BAD_NET_NAME:
NativeError.ThrowException(lastError, pathLp);
break;
case Win32Errors.ERROR_DIRECTORY:
// MSDN: .NET 3.5+: NotSupportedException: path contains a colon character (:) that is not part of a drive label ("C:\").
throw new NotSupportedException(String.Format(CultureInfo.CurrentCulture, Resources.PathFormatUnsupported, path));
default:
NativeError.ThrowException(lastError, folderLp);
break;
}
}
else if (compress)
Device.ToggleCompressionInternal(true, transaction, folderLp, true, PathFormat.LongFullPath);
}
}
return new DirectoryInfo(transaction, pathLp, PathFormat.FullPath);
}
internal static SafeFileHandle CreateFileInternal(KernelTransaction transaction, string path, ExtendedFileAttributes attributes, FileSecurity fileSecurity, FileMode fileMode, FileSystemRights fileSystemRights, FileShare fileShare, bool checkPath, PathFormat pathFormat)
{
if (checkPath && pathFormat == PathFormat.RelativePath)
{
Path.CheckValidPath(path, true, true);
}
// When isFile == null, we're working with a device.
// When opening a VOLUME or removable media drive (for example, a floppy disk drive or flash memory thumb drive),
// the path string should be the following form: "\\.\X:"
// Do not use a trailing backslash (\), which indicates the root.
string pathLp = Path.GetExtendedLengthPathInternal(transaction, path, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator);
PrivilegeEnabler privilegeEnabler = null;
try
{
if (fileSecurity != null)
{
fileSystemRights |= (FileSystemRights)0x1000000;
}
// AccessSystemSecurity = 0x1000000 AccessSystemAcl access type.
// MaximumAllowed = 0x2000000 MaximumAllowed access type.
if ((fileSystemRights & (FileSystemRights)0x1000000) != 0 ||
(fileSystemRights & (FileSystemRights)0x2000000) != 0)
{
privilegeEnabler = new PrivilegeEnabler(Privilege.Security);
}
using (var securityAttributes = new Security.NativeMethods.SecurityAttributes(fileSecurity))
{
SafeFileHandle handle = transaction == null || !NativeMethods.IsAtLeastWindowsVista
// CreateFile() / CreateFileTransacted()
// 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.
// 2013-01-13: MSDN confirms LongPath usage.
? NativeMethods.CreateFile(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero)
: NativeMethods.CreateFileTransacted(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero, transaction.SafeHandle, IntPtr.Zero, IntPtr.Zero);
int lastError = Marshal.GetLastWin32Error();
if (handle.IsInvalid)
{
handle.Close();
NativeError.ThrowException(lastError, pathLp);
}
return(handle);
}
}
finally
{
if (privilegeEnabler != null)
{
privilegeEnabler.Dispose();
}
}
}
internal static SafeFileHandle CreateFileInternal(KernelTransaction transaction, string path, ExtendedFileAttributes attributes, FileSecurity fileSecurity, FileMode fileMode, FileSystemRights fileSystemRights, FileShare fileShare, bool checkPath, PathFormat pathFormat)
{
if (checkPath && pathFormat == PathFormat.RelativePath)
Path.CheckValidPath(path, true, true);
// When isFile == null, we're working with a device.
// When opening a VOLUME or removable media drive (for example, a floppy disk drive or flash memory thumb drive),
// the path string should be the following form: "\\.\X:"
// Do not use a trailing backslash (\), which indicates the root.
string pathLp = Path.GetExtendedLengthPathInternal(transaction, path, pathFormat, GetFullPathOptions.TrimEnd | GetFullPathOptions.RemoveTrailingDirectorySeparator);
PrivilegeEnabler privilegeEnabler = null;
try
{
if (fileSecurity != null)
fileSystemRights |= (FileSystemRights)0x1000000;
// AccessSystemSecurity = 0x1000000 AccessSystemAcl access type.
// MaximumAllowed = 0x2000000 MaximumAllowed access type.
if ((fileSystemRights & (FileSystemRights)0x1000000) != 0 ||
(fileSystemRights & (FileSystemRights)0x2000000) != 0)
privilegeEnabler = new PrivilegeEnabler(Privilege.Security);
using (var securityAttributes = new Security.NativeMethods.SecurityAttributes(fileSecurity))
{
SafeFileHandle handle = transaction == null || !NativeMethods.IsAtLeastWindowsVista
// CreateFile() / CreateFileTransacted()
// 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.
// 2013-01-13: MSDN confirms LongPath usage.
? NativeMethods.CreateFile(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero)
: NativeMethods.CreateFileTransacted(pathLp, fileSystemRights, fileShare, securityAttributes, fileMode, attributes, IntPtr.Zero, transaction.SafeHandle, IntPtr.Zero, IntPtr.Zero);
int lastError = Marshal.GetLastWin32Error();
if (handle.IsInvalid)
{
handle.Close();
NativeError.ThrowException(lastError, pathLp);
}
return handle;
}
}
finally
{
if (privilegeEnabler != null)
privilegeEnabler.Dispose();
}
}
