Messages in this thread |  | | Subject | Re: [PATCH] Fix queued SIGIO | Date | Mon, 18 Sep 2000 12:36:02 +0100 (BST) | From | Alan Cox <> |
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> On Mon, Sep 18, 2000 at 12:34:03PM +0200, Alan Cox wrote: > > > The problem is really that SI_SIGIO is negative, but it should be positive > > > to make SI_FROMUSER return false on it. > > > > > > Changing it would unfortunately break binary compatibility. This patch > > > > Why ? > > If a program checks info->si_code for incoming signals.
ok now what does the value the kernel passes have to do with the value we write on the user stack - at the moment we blindly copy but we could just use a tiny lookup table to 'dekernelize' the ID. In fact if you picked a bitflag you could just mask it
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