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bug#23031: reporting write errors and handling SIGPIPE
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From: |
Eric Blake |
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Subject: |
bug#23031: reporting write errors and handling SIGPIPE |
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Date: |
Fri, 18 Mar 2016 12:18:05 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
On 03/18/2016 11:30 AM, Assaf Gordon wrote:
> I found that on my weird setup, programs start with SIGPIPE set to
> SIG_IGN by default (not sure how I got myself into such situation).
There have been various automated robot testsuite runners (such as
Jenkins at one point in the past, although I don't know if it is still
the case) that do the equivalent of 'trap - PIPE' in their master shell;
then the rules of POSIX say that 'sh' can't do anything to undo that
setting (it's very annoying - inheriting ignored SIGPIPE is impossible
to undo in straight shell, and requires an intermediary C program).
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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