COPY ON WRITE FOR TEXT PAGES

COPY ON WRITE FOR TEXT PAGES

	The 386 does not generate a page protection fault while it is
executing in supervisor mode :-(, so copy on write handling never takes
place when the kernel stuffs data into a process's text- or any other
non-anonymous segment.  So these cases must be explicitly checked for.

NOTE:		This is a security hole where it is possible for any
		normal user with access to the debugger and read access
		to any suid root program to become root!  You should
		apply this patch immediately!

AUTHOR:		Paul Kranenburg (pk@cs.few.eur.nl)
386BSD-Patchkit: patch00011