Re: copy_from_user() fix
Richard Gooch (rgooch@atnf.csiro.au)
Mon, 24 Aug 1998 22:54:24 +1000
Pavel Machek writes:
> Hi!
>
> > > Also, I still maintain there should be a mode to raise SIGSEGV
> > > whenever a system call returns EFAULT. Not doing so breaks the system
> > > call/library routine transparency, and lets bugs go uncaught.
> >
> > Thats a matter for glibc. If you wrap the glibc syscall macros to do
> > a raise(SIGSEGV) then you get your desire. So its a non kernel item ;)
>
> Still, I think that this could be in kernel. It is faster to do here
> (you can SIGSEGV it directly from pagefault handler), and IMO you
> _should_ get SIGSEGV for read(0,0,1)...
??? What's wrong with EFAULT?
Regards,
Richard....
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