GNU bug report logs - #8391
chmod setuid & setguid bits

Previous Next

Full log

Message #83 received at 8391 <at> debbugs.gnu.org (full text, mbox):

From: Bruno Haible <bruno <at> clisp.org>
To: bug-gnulib <at> gnu.org, ovasik <at> redhat.com
Cc: chris <at> computersalat.de, Paul Eggert <eggert <at> cs.ucla.edu>,
	Eric Blake <eblake <at> redhat.com>, 8391 <at> debbugs.gnu.org
Subject: Re: bug#8391: chmod setuid & setguid bits
Date: Mon, 05 Mar 2012 17:42:08 +0100

Ondrej Vasik cited Paul Eggert:
> > recommend leading '@' for future scripts.

This use of '@' in a mode string conflicts with the use of '@' on
MacOS X 10.5 and newer to designate "extended attributes" (like
quarantine information on MacOS X 10.7).

$ /bin/ls -l /etc/ntp.conf
-rw-r--r--@ 1 root  wheel  27 Apr  5  2008 /etc/ntp.conf

$ /bin/ls -l@ /etc/ntp.conf
-rw-r--r--@ 1 root  wheel  27 Apr  5  2008 /etc/ntp.conf
        com.apple.TextEncoding  15 

You can see that both in the mode string (-rw-r--r--@) as well as among the
'/bin/ls' command-line option, the '@' has the meaning "extended attributes".

Having GNU coreutils interpret "@rw-r--r--" in a completely different way would
be counterintuive and confusing.

Bruno

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.