[Bug 757244] Re: Jobs won't start using pdsh if script fd >= 10
Arkadiusz MiĆkiewicz
arekm at pld-linux.org
Tue Apr 12 11:35:39 CEST 2011
Jacek also found this:
"Open files are represented by decimal numbers starting with zero. The
largest possible value is implementation-dependent; however, all
implementations support at least 0 to 9, inclusive, for use by the
application. These numbers are called file descriptors. "
http://pubs.opengroup.org/onlinepubs/007908799/xcu/chap2.html
so posix shells are required to support file descriptiors 0-9 only.
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https://bugs.launchpad.net/bugs/757244
Title:
Jobs won't start using pdsh if script fd >= 10
Status in Upstart:
New
Status in PLD Linux Distribution:
New
Bug description:
After upgrading Upstart to 1.2 I found some of my jobs not starting
(exiting with code '127'). After some investigation I found out that
Upstart prepends 'exec 10<&-' to the scripts of the failing jobs, to
close the input pipe. The problem is this won't work for some POSIX
shells, which can handle only single-digit file descriptors this way.
This works for the big and heavy bash, but won't for under PDKSH (used
as /bin/sh in e.g. PLD Linux).
Can upstart be made to use some fixed file descriptor for this task?
e.g. '3'?
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