CVS commit: src/bin/sh

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Thu May 12 13:31:37 UTC 2016

Modified Files:
        src/bin/sh: redir.c redir.h

Log Message:
More work on file descriptors...   This is the copyfd() cleanup.
copyfd() duplicates file descriptors - it used to be widely used,
but these days has seen its popularity dwindle.   Strip it of an
option that ceased to be variable (simplifying code) and cause all
its users to check its result, so it does not need to handle errors
itself (simplifying code further), and make it become a private inernal
routine in redir.c (all callers from other places have switched to a
more modern interface.)  Make sure we error() if N>&N fails (if N is closed.)


To generate a diff of this commit:
cvs rdiff -u -r1.46 -r1.47 src/bin/sh/redir.c
cvs rdiff -u -r1.20 -r1.21 src/bin/sh/redir.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.