internal static int FillAttributeInfo(String path, ref Win32Native.WIN32_FILE_ATTRIBUTE_DATA data, bool tryagain) { int dataInitialised = 0; if (Environment.OSInfo == Environment.OSName.Win95 || tryagain) // We are running under Windows 95 and we don't have GetFileAttributesEx API or someone has a handle to the file open { Win32Native.WIN32_FIND_DATA win95data; // We do this only on Win95 machines win95data = new Win32Native.WIN32_FIND_DATA(); // Remove trialing slash since this can cause grief to FindFirstFile. You will get an invalid argument error String tempPath = path.TrimEnd(new char [] { Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar }); // For floppy drives, normally the OS will pop up a dialog saying // there is no disk in drive A:, please insert one. We don't want that. // SetErrorMode will let us disable this, but we should set the error // mode back, since this may have wide-ranging effects. int oldMode = Win32Native.SetErrorMode(Win32Native.SEM_FAILCRITICALERRORS); IntPtr handle = Win32Native.FindFirstFile(tempPath, win95data); Win32Native.SetErrorMode(oldMode); if (handle == Win32Native.INVALID_HANDLE_VALUE) { dataInitialised = Marshal.GetLastWin32Error(); if (dataInitialised == Win32Native.ERROR_FILE_NOT_FOUND || dataInitialised == Win32Native.ERROR_PATH_NOT_FOUND || dataInitialised == Win32Native.ERROR_NOT_READY) // floppy device not ready { data.fileAttributes = -1; dataInitialised = 0; } return(dataInitialised); } // Close the Win32 handle bool r = Win32Native.FindClose(handle); if (!r) { BCLDebug.Assert(false, "File::FillAttributeInfo - FindClose failed!"); __Error.WinIOError(); } // Copy the information to data data.fileAttributes = win95data.dwFileAttributes; data.ftCreationTimeLow = (uint)win95data.ftCreationTime_dwLowDateTime; data.ftCreationTimeHigh = (uint)win95data.ftCreationTime_dwHighDateTime; data.ftLastAccessTimeLow = (uint)win95data.ftLastAccessTime_dwLowDateTime; data.ftLastAccessTimeHigh = (uint)win95data.ftLastAccessTime_dwHighDateTime; data.ftLastWriteTimeLow = (uint)win95data.ftLastWriteTime_dwLowDateTime; data.ftLastWriteTimeHigh = (uint)win95data.ftLastWriteTime_dwHighDateTime; data.fileSizeHigh = win95data.nFileSizeHigh; data.fileSizeLow = win95data.nFileSizeLow; } else { // For floppy drives, normally the OS will pop up a dialog saying // there is no disk in drive A:, please insert one. We don't want that. // SetErrorMode will let us disable this, but we should set the error // mode back, since this may have wide-ranging effects. int oldMode = Win32Native.SetErrorMode(Win32Native.SEM_FAILCRITICALERRORS); bool success = Win32Native.GetFileAttributesEx(path, GetFileExInfoStandard, ref data); Win32Native.SetErrorMode(oldMode); if (!success) { dataInitialised = Marshal.GetLastWin32Error(); if (dataInitialised == Win32Native.ERROR_FILE_NOT_FOUND || dataInitialised == Win32Native.ERROR_PATH_NOT_FOUND || dataInitialised == Win32Native.ERROR_NOT_READY) // floppy device not ready { data.fileAttributes = -1; dataInitialised = 0; } else { // In case someone latched onto the file. Take the perf hit only for failure return(FillAttributeInfo(path, ref data, true)); } } } return(dataInitialised); }
// Returns 0 on success, otherwise a Win32 error code. Note that // classes should use -1 as the uninitialized state for dataInitialized. internal static int FillAttributeInfo(String path, ref Win32Native.WIN32_FILE_ATTRIBUTE_DATA data, bool tryagain, bool returnErrorOnNotFound) { int dataInitialised = 0; if (tryagain) // someone has a handle to the file open, or other error { Win32Native.WIN32_FIND_DATA findData; findData = new Win32Native.WIN32_FIND_DATA(); // Remove trialing slash since this can cause grief to FindFirstFile. You will get an invalid argument error String tempPath = path.TrimEnd(new char[] { Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar }); #if !PLATFORM_UNIX // For floppy drives, normally the OS will pop up a dialog saying // there is no disk in drive A:, please insert one. We don't want that. // SetThreadErrorMode will let us disable this, but we should set the error // mode back, since this may have wide-ranging effects. uint oldMode; bool errorModeSuccess = Interop.Kernel32.SetThreadErrorMode(Interop.Kernel32.SEM_FAILCRITICALERRORS, out oldMode); try { #endif bool error = false; SafeFindHandle handle = Win32Native.FindFirstFile(tempPath, findData); try { if (handle.IsInvalid) { error = true; dataInitialised = Marshal.GetLastWin32Error(); if (dataInitialised == Win32Native.ERROR_FILE_NOT_FOUND || dataInitialised == Win32Native.ERROR_PATH_NOT_FOUND || dataInitialised == Win32Native.ERROR_NOT_READY) // floppy device not ready { if (!returnErrorOnNotFound) { // Return default value for backward compatibility dataInitialised = 0; data.fileAttributes = -1; } } return(dataInitialised); } } finally { // Close the Win32 handle try { handle.Close(); } catch { // if we're already returning an error, don't throw another one. if (!error) { Debug.Assert(false, "File::FillAttributeInfo - FindClose failed!"); throw Win32Marshal.GetExceptionForLastWin32Error(); } } } #if !PLATFORM_UNIX } finally { if (errorModeSuccess) { Interop.Kernel32.SetThreadErrorMode(oldMode, out oldMode); } } #endif // Copy the information to data data.PopulateFrom(findData); } else { bool success = false; #if !PLATFORM_UNIX // For floppy drives, normally the OS will pop up a dialog saying // there is no disk in drive A:, please insert one. We don't want that. // SetThreadErrorMode will let us disable this, but we should set the error // mode back, since this may have wide-ranging effects. uint oldMode; bool errorModeSuccess = Interop.Kernel32.SetThreadErrorMode(Interop.Kernel32.SEM_FAILCRITICALERRORS, out oldMode); try { #endif success = Win32Native.GetFileAttributesEx(path, GetFileExInfoStandard, ref data); #if !PLATFORM_UNIX } finally { if (errorModeSuccess) { Interop.Kernel32.SetThreadErrorMode(oldMode, out oldMode); } } #endif if (!success) { dataInitialised = Marshal.GetLastWin32Error(); if (dataInitialised != Win32Native.ERROR_FILE_NOT_FOUND && dataInitialised != Win32Native.ERROR_PATH_NOT_FOUND && dataInitialised != Win32Native.ERROR_NOT_READY) // floppy device not ready { // In case someone latched onto the file. Take the perf hit only for failure return(FillAttributeInfo(path, ref data, true, returnErrorOnNotFound)); } else { if (!returnErrorOnNotFound) { // Return default value for backward compbatibility dataInitialised = 0; data.fileAttributes = -1; } } } } return(dataInitialised); }
internal static int FillAttributeInfo(String path, ref Win32Native.WIN32_FILE_ATTRIBUTE_DATA data, bool tryagain, bool returnErrorOnNotFound) { int dataInitialised = 0; if (tryagain) // someone has a handle to the file open, or other error { Win32Native.WIN32_FIND_DATA win95data; // We do this only on Win95 machines win95data = new Win32Native.WIN32_FIND_DATA(); // Remove trialing slash since this can cause grief to FindFirstFile. You will get an invalid argument error String tempPath = path.TrimEnd(new char [] { Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar }); // For floppy drives, normally the OS will pop up a dialog saying // there is no disk in drive A:, please insert one. We don't want that. // SetErrorMode will let us disable this, but we should set the error // mode back, since this may have wide-ranging effects. int oldMode = Win32Native.SetErrorMode(Win32Native.SEM_FAILCRITICALERRORS); try { bool error = false; SafeFindHandle handle = Win32Native.FindFirstFile(tempPath, win95data); try { if (handle.IsInvalid) { error = true; dataInitialised = Marshal.GetLastWin32Error(); if (dataInitialised == Win32Native.ERROR_FILE_NOT_FOUND || dataInitialised == Win32Native.ERROR_PATH_NOT_FOUND || dataInitialised == Win32Native.ERROR_NOT_READY) // floppy device not ready { if (!returnErrorOnNotFound) { // Return default value for backward compbatibility dataInitialised = 0; data.fileAttributes = -1; } } return(dataInitialised); } } finally { // Close the Win32 handle try { handle.Close(); } catch { // if we're already returning an error, don't throw another one. if (!error) { BCLDebug.Assert(false, "File::FillAttributeInfo - FindClose failed!"); __Error.WinIOError(); } } } } finally { Win32Native.SetErrorMode(oldMode); } // Copy the information to data data.fileAttributes = win95data.dwFileAttributes; data.ftCreationTimeLow = (uint)win95data.ftCreationTime_dwLowDateTime; data.ftCreationTimeHigh = (uint)win95data.ftCreationTime_dwHighDateTime; data.ftLastAccessTimeLow = (uint)win95data.ftLastAccessTime_dwLowDateTime; data.ftLastAccessTimeHigh = (uint)win95data.ftLastAccessTime_dwHighDateTime; data.ftLastWriteTimeLow = (uint)win95data.ftLastWriteTime_dwLowDateTime; data.ftLastWriteTimeHigh = (uint)win95data.ftLastWriteTime_dwHighDateTime; data.fileSizeHigh = win95data.nFileSizeHigh; data.fileSizeLow = win95data.nFileSizeLow; } else { // For floppy drives, normally the OS will pop up a dialog saying // there is no disk in drive A:, please insert one. We don't want that. // SetErrorMode will let us disable this, but we should set the error // mode back, since this may have wide-ranging effects. bool success = false; int oldMode = Win32Native.SetErrorMode(Win32Native.SEM_FAILCRITICALERRORS); try { success = Win32Native.GetFileAttributesEx(path, GetFileExInfoStandard, ref data); } finally { Win32Native.SetErrorMode(oldMode); } if (!success) { dataInitialised = Marshal.GetLastWin32Error(); if (dataInitialised != Win32Native.ERROR_FILE_NOT_FOUND && dataInitialised != Win32Native.ERROR_PATH_NOT_FOUND && dataInitialised != Win32Native.ERROR_NOT_READY) // floppy device not ready { // In case someone latched onto the file. Take the perf hit only for failure return(FillAttributeInfo(path, ref data, true, returnErrorOnNotFound)); } else { if (!returnErrorOnNotFound) { // Return default value for backward compbatibility dataInitialised = 0; data.fileAttributes = -1; } } } } return(dataInitialised); }