An option to enable (default) or disable GRX suid root executables. In root mode, everything is as before. In user mode, the drivers that use inport/outport (egavga1, ega4, svga4 and vga8x) are disabled. Tested with 8, 15, 16 and 32bpp, linear and banked (my GeForce3 has no 24bpp, but that shouldn't be a problem). So, if you are ready (like me) to sacrifice the 1 and 4bpp modes for security, edit makedefs.grx and comment out USE_SUIDROOT_EXEC (or set it to 'n'). I wrote fd_svgal (1 and 4bpp) and fd_vgagl (8bpp or more) drivers first, but they were 3 to 30 _times_ slower than the default ones.