Re: [FYI 1/2] {test-protocols} tap/awk: handle exit statuses > 256 ( seen on few korn shells)

[Eric Blake]

On 09/28/2011 01:12 PM, Stefano Lattarini wrote:
> Hi Eric, thanks for the links.
>
> On Wednesday 28 September 2011, Eric Blake wrote:
> > On 09/28/2011 08:34 AM, Stefano Lattarini wrote:
> > > Some Korn shells, when a child process die due to signal number
> > > n, can leave in $? an exit status of 256+n instead of the more
> > > standard 128+n.  Apparently, both behaviours are allowed by
> > > POSIX,
> >
> > Indeed.  Here's some further reading:
> >
> > http://austingroupbugs.net/view.php?id=51
> Very useful: I've added a reference to it in the comments of
> tap-driver.sh; see attached patch.

Looks reasonable to me.

> > http://austingroupbugs.net/view.php?id=347
> This does not seem relevant for the issue under discussion to me.  Maybe
> wrong link?  Or am I missing something?

That link is not directly related to $? values, but _is_ related to 
which signals a shell may and must handle, and the required difference 
in signal handling between interactive and script usage of shells.

--
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org