Re: sizeof (siginfo_t) problem

From: Jamie Lokier (jamie@shareable.org)
Date: Mon Jul 14 2003 - 08:55:40 EST


Jakub Jelinek wrote:
> When siginfo_t was added, the intent obviously was that its size
> be 128 bytes on all arches.
>
> The kernel unfortunately does this right on sparc64 and alpha from 64-bit
> arches only; ia64, s390x, ppc64 etc. got it wrong.

That's not the only siginfo_t problem:

        - Take a look at the placement of the _uid32 field on m68k.
          It varies from sub-structure to sub-structure - yet it is
          always written to the same offset by the kernel. Borken!

Other cleanups:

        - SI_* codes on S390 are identical to the generic ones.
          They can be removed from the S390 file.

        - Comment in MIPS siginfo about IRIX compatibility is no
          longer true; the layout was changed when uid32 added.

        - __ARCH_SI_UID_T can be removed. Only Sparc sets it,
          and to the same type as uid_t (unsigned int).

-- Jamie
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