linux-kernel - Re: [PATCH] Return ENOEXEC, not ENOENT, if a binary's or script's interpreter doesn't exist.

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Message-ID: <20090710161758.GC1396@ucw.cz>
Date:	Fri, 10 Jul 2009 18:17:59 +0200
From:	Pavel Machek <pavel@....cz>
To:	Geoffrey Thomas <geofft@....EDU>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Return ENOEXEC, not ENOENT, if a binary's or script's
	interpreter doesn't exist.

On Thu 2009-07-09 03:48:20, Geoffrey Thomas wrote:
> If you try to execute a binary compiled for ld-linux.so.1 (libc5) on a machine
> with only ld-linux.so.2 (libc6), your shell will claim "mybinary: No such file
> or directory", even though the binary exists. The ENOENT actually applies to
> the ELF intepreter, not to the file itself. The same happens if you have a
> nonexistent interpreter in a shell script's shebang line.
> 
> Give a more helpful and more expected error, "cannot execute binary file", in
> these cases.

NAK. Current behaviour is useful -- and it is really file thats
missing.

Please improve manpage instead.

(chmod 000 /lib also produces 'interesting' error messages. Better
document those, too).						Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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