Re: sizeof (siginfo_t) problem

Jamie Lokier (
Mon, 14 Jul 2003 14:55:40 +0100

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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