private static OpenFileResult TryOpenDirectory(
string directoryPath,
FileDesiredAccess desiredAccess,
FileShare shareMode,
FileMode fileMode,
FileFlagsAndAttributes flagsAndAttributes,
out SafeFileHandle handle)
{
Contract.Requires(!string.IsNullOrEmpty(directoryPath));
if (flagsAndAttributes.HasFlag(FileFlagsAndAttributes.FileFlagOpenReparsePoint) &&
IsSymlink(directoryPath))
{
return(TryOpenSymlink(directoryPath, desiredAccess, shareMode, fileMode, out handle));
}
try
{
FileStream fs = new FileStream(directoryPath, fileMode, FileDesiredAccessToFileAccess(desiredAccess), shareMode, DefaultBufferSize, FileFlagsAndAttributesToFileOptions(flagsAndAttributes | FileFlagsAndAttributes.FileFlagBackupSemantics));
handle = fs.SafeFileHandle;
return(OpenFileResult.Create(NativeIOConstants.ErrorSuccess, fileMode, handleIsValid: true, openingById: false));
}
catch (Exception ex)
{
handle = null;
int nativeErrorCode = (int)NativeErrorCodeForException(ex);
Logger.Log.StorageTryOpenDirectoryFailure(Events.StaticContext, directoryPath, nativeErrorCode);
return(OpenFileResult.Create(nativeErrorCode, fileMode, handleIsValid: false, openingById: false));
}
}
/// <inheritdoc />
public OpenFileResult TryCreateOrOpenFile(
string path,
FileDesiredAccess desiredAccess,
FileShare shareMode,
FileMode creationDisposition,
FileFlagsAndAttributes flagsAndAttributes,
out SafeFileHandle handle)
{
if (flagsAndAttributes.HasFlag(FileFlagsAndAttributes.FileFlagOpenReparsePoint) &&
IsSymlink(path))
{
return(TryOpenSymlink(path, desiredAccess, shareMode, creationDisposition, out handle));
}
try
{
FileStream fs = new FileStream(path, creationDisposition, FileDesiredAccessToFileAccess(desiredAccess), shareMode, DefaultBufferSize, FileFlagsAndAttributesToFileOptions(flagsAndAttributes));
handle = fs.SafeFileHandle;
return(OpenFileResult.Create(NativeIOConstants.ErrorSuccess, creationDisposition, handleIsValid: true, openingById: false));
}
catch (Exception ex)
{
handle = null;
var errorCode = NativeErrorCodeForException(ex);
Logger.Log.StorageTryOpenOrCreateFileFailure(Events.StaticContext, path, (int)creationDisposition, (int)errorCode);
return(OpenFileResult.Create((int)errorCode, creationDisposition, handleIsValid: false, openingById: false));
}
}
/// <inheritdoc />
public OpenFileResult TryCreateOrOpenFile(
string path,
FileDesiredAccess desiredAccess,
FileShare shareMode,
FileMode creationDisposition,
FileFlagsAndAttributes flagsAndAttributes,
out SafeFileHandle handle)
{
return(TryOpen(
path,
desiredAccess,
shareMode,
creationDisposition,
flagsAndAttributes.HasFlag(FileFlagsAndAttributes.FileFlagOpenReparsePoint) && IsSymlink(path),
out handle));
}
private OpenFileResult TryOpenDirectory(
string directoryPath,
FileDesiredAccess desiredAccess,
FileShare shareMode,
FileMode fileMode,
FileFlagsAndAttributes flagsAndAttributes,
out SafeFileHandle handle)
{
Contract.Requires(!string.IsNullOrEmpty(directoryPath));
return(TryOpen(
directoryPath,
desiredAccess,
shareMode,
fileMode,
flagsAndAttributes.HasFlag(FileFlagsAndAttributes.FileFlagOpenReparsePoint) && IsSymlink(directoryPath),
out handle));
}
=> 0; // TODO: Task #1272136 (FileContentTable)
/// <nodoc />
private static FileOptions FileFlagsAndAttributesToFileOptions(FileFlagsAndAttributes flagsAndAttributes) =>
s_fileOptionsFlags.Aggregate(FileOptions.None, (acc, kvp) => flagsAndAttributes.HasFlag(kvp.Key) ? acc | kvp.Value : acc);