Messages in this thread |  | | From | "Robert H. de Vries" <> | Subject | Re: [PATCH] Fix queued SIGIO | Date | Tue, 19 Sep 2000 20:12:29 +0200 |
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On Mon, 18 Sep 2000, 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 >
It would be better to change SI_SIGIO in all the include/asm-*/siginfo.h files from -5 to __SI_CODE(__SI_SIGIO, -5) __SI_SIGIO would become (6 << 16). The code in arch/*/kernel/signal.c only copies the lower 16 bits to user space. This means that the test SI_FROMKERNEL returns true and user space still gets the same values as before.
The same trick is indeed used also in my POSIX timer patch.
Robert
-- Robert de Vries rhdv@rhdv.cistron.nl - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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