Q: simple test to test program IOPL capability?

Rik van Riel (H.H.vanRiel@phys.uu.nl)
Sun, 3 May 1998 17:46:51 +0200 (MET DST)


while working on the Out-of-memory handling patch, I
haven't seen a way to test for IOPERM and IOPL permissions.
I've seen some black magic in arch/i386/kernel/ioport.c,
but nothing I know of as portable...
OTOH, it might be portable and look like black magic just
because of that :-)

Returning to my question: How can I test whether a process
has I/O port permission or not?

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