Xen devel - Oct 2005 - errno in xenbus_xs.c?

A recent change to xenbus_xs.c makes use of errno.  Where
is errno getting declared?  (The obvious answer --
linux/errno.h -- is not true.)

Errno is not found when compiling xenbus_xs.c for
xenlinux/ia64 so I suspect some asm-specific trickery
is going on?

Thanks,
Dan

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Not sure if this is the "right" fix, but include''ing
linux/unistd.h (where errno is declared) in xenbus_xs.c
resolves the problem.
> -----Original Message-----
> From: Magenheimer, Dan (HP Labs Fort Collins) 
> Sent: Monday, October 24, 2005 10:24 AM
> To: ''xen-devel@lists.xensource.com''
> Subject: errno in xenbus_xs.c?
> 
> A recent change to xenbus_xs.c makes use of errno.  Where
> is errno getting declared?  (The obvious answer --
> linux/errno.h -- is not true.)
> 
> Errno is not found when compiling xenbus_xs.c for
> xenlinux/ia64 so I suspect some asm-specific trickery
> is going on?
> 
> Thanks,
> Dan
> 
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On Mon, Oct 24, 2005 at 09:50:21AM -0700, Magenheimer, Dan (HP Labs Fort
Collins) wrote:
> Not sure if this is the "right" fix, but include''ing
> linux/unistd.h (where errno is declared) in xenbus_xs.c
> resolves the problem.
Well errno doesn''t appear to be being used anywhere else, so I think a
better
fix is simply to remove those new uses of errno.  I shall do that.

Ewan.

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