public FileStream(IntPtr handle, FileAccess access,
bool ownsHandle, int bufferSize,
bool isAsync)
{
// Validate the parameters.
if (bufferSize <= 0)
{
throw new ArgumentOutOfRangeException
("bufferSize", _("ArgRange_BufferSize"));
}
if (access < FileAccess.Read ||
access > FileAccess.ReadWrite)
{
throw new ArgumentOutOfRangeException
("access", _("IO_FileAccess"));
}
#if false
if (!FileMethods.CheckHandleAccess(handle, access))
{
throw new UnauthorizedAccessException
(_("IO_IncorrectAccess"));
}
#endif
// Initialize the object state.
this.handle = handle;
this.access = access;
this.ownsHandle = ownsHandle;
this.isAsync = isAsync;
this.bufferSize = bufferSize;
this.buffer = new byte [bufferSize];
this.bufferPosn = 0;
this.bufferLen = 0;
this.bufferOwnedByWrite = false;
this.canSeek = FileMethods.CanSeek(handle);
if (canSeek)
{
this.position = FileMethods.Seek
(handle, 0, SeekOrigin.Current);
}
else
{
this.position = 0;
}
}
public FileStream(String path, FileMode mode,
FileAccess access, FileShare share,
int bufferSize, bool useAsync)
{
// Validate the parameters.
if (path == null)
{
throw new ArgumentNullException("path");
}
if (!FileMethods.ValidatePathname(path))
{
throw new ArgumentException(_("IO_InvalidPathname"));
}
if (bufferSize <= 0)
{
throw new ArgumentOutOfRangeException
("bufferSize", _("ArgRange_BufferSize"));
}
if (access < FileAccess.Read ||
access > FileAccess.ReadWrite)
{
throw new ArgumentOutOfRangeException
("access", _("IO_FileAccess"));
}
if (mode < FileMode.CreateNew ||
mode > FileMode.Append)
{
throw new ArgumentOutOfRangeException
("mode", _("IO_FileMode"));
}
#if ECMA_COMPAT
if ((((int)share) & ~0x03) != 0)
#else
if ((((int)share) & ~0x13) != 0)
#endif
{
throw new ArgumentOutOfRangeException
("share", _("IO_FileShare"));
}
// Attempt to open the file.
if (!FileMethods.Open(path, mode, access, share, out handle))
{
Errno errno = FileMethods.GetErrno();
if (errno == Errno.ENOENT)
{
//
// Under UNIX ENOENT is returned if the
// directory the file lives in doesn't exist.
// ECMA requires DirectoryNotFountException
// in that case.
//
String dirname = System.IO.Path.GetDirectoryName(System.IO.Path.GetFullPath(path));
if (!System.IO.Directory.Exists(dirname))
{
throw new DirectoryNotFoundException();
}
throw new FileNotFoundException(null, path);
}
else if (errno == Errno.ENOTDIR)
{
throw new DirectoryNotFoundException();
}
else if (errno == Errno.ENAMETOOLONG)
{
throw new PathTooLongException();
}
else if (errno == Errno.EACCES)
{
throw new UnauthorizedAccessException();
}
else
{
throw new IOException(errno);
}
}
// Initialize the object state.
this.access = access;
this.ownsHandle = true;
this.isAsync = useAsync;
this.path = path;
this.bufferSize = bufferSize;
this.buffer = new byte [bufferSize];
this.bufferPosn = 0;
this.bufferLen = 0;
this.bufferOwnedByWrite = false;
this.canSeek = FileMethods.CanSeek(handle);
this.position = 0;
}
