Messages in this thread | | | Date | Wed, 16 Nov 2016 16:11:59 +0200 | From | Mikko Rapeli <> | Subject | Re: [PATCH v05 60/72] arch/arm/include/uapi/asm/signal.h: use __kernel_size_t instead of size_t |
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On Wed, Aug 24, 2016 at 05:02:56PM +0200, Arnd Bergmann wrote: > On Monday, August 22, 2016 8:33:17 PM CEST Mikko Rapeli wrote: > > diff --git a/arch/arm/include/uapi/asm/signal.h b/arch/arm/include/uapi/asm/signal.h > > index 33073bd..859f2de 100644 > > --- a/arch/arm/include/uapi/asm/signal.h > > +++ b/arch/arm/include/uapi/asm/signal.h > > @@ -113,7 +113,7 @@ struct sigaction { > > typedef struct sigaltstack { > > void __user *ss_sp; > > int ss_flags; > > - size_t ss_size; > > + __kernel_size_t ss_size; > > } stack_t; > > I was going to reply with an Ack, but on further consideration, > I'm not sure if we can't do this in general: size_t may be either > 'unsigned int' or 'unsigned long' (depending on the architecture > and toolchain), and if kernel and glibc disagree on this, we > have a problem with any user space code that expects sigaltstack->ss_size > to be the same type as size_t (as mandated by the man page). > > I wonder if there is another way to address this.
I presume that kernel headers need to follow libc in this case and include <stddef.h>?
-Mikko
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