From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Enge <andreas@enge.fr>
Subject: bug#21010: eject fails because of hardcoded path to umount
Date: Wed, 8 Jul 2015 18:31:44 +0200
Message-ID: <20150708163144.GA11642@debian>
References: <871tgig7w2.fsf@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Return-path: <bug-guix-bounces+gcggb-bug-guix=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:48559)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1ZCsGU-0002LD-NW
	for bug-guix@gnu.org; Wed, 08 Jul 2015 12:32:07 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1ZCsGQ-0002oh-Nk
	for bug-guix@gnu.org; Wed, 08 Jul 2015 12:32:06 -0400
Received: from debbugs.gnu.org ([140.186.70.43]:43006)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1ZCsGQ-0002od-KG
	for bug-guix@gnu.org; Wed, 08 Jul 2015 12:32:02 -0400
Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1ZCsGQ-00025O-5E
	for bug-guix@gnu.org; Wed, 08 Jul 2015 12:32:02 -0400
Sender: "Debbugs-submit" <debbugs-submit-bounces@debbugs.gnu.org>
Resent-Message-ID: <handler.21010.B21010.14363731158004@debbugs.gnu.org>
Content-Disposition: inline
In-Reply-To: <871tgig7w2.fsf@gmail.com>
List-Id: Bug reports for GNU Guix <bug-guix.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/bug-guix>,
	<mailto:bug-guix-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/bug-guix>
List-Post: <mailto:bug-guix@gnu.org>
List-Help: <mailto:bug-guix-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/bug-guix>,
	<mailto:bug-guix-request@gnu.org?subject=subscribe>
Errors-To: bug-guix-bounces+gcggb-bug-guix=m.gmane.org@gnu.org
Sender: bug-guix-bounces+gcggb-bug-guix=m.gmane.org@gnu.org
To: Alex Sassmannshausen <alex.sassmannshausen@gmail.com>
Cc: 21010@debbugs.gnu.org

On Wed, Jul 08, 2015 at 02:18:21PM +0200, Alex Sassmannshausen wrote:
> eject: unable to exec /bin/umount of `/mnt/usb'

The culprit is in the source code of util-linux-2.25.2/sys-utils/eject.c:
681:                    execl("/bin/umount", "/bin/umount", name, "-n", NULL);
683:                    execl("/bin/umount", "/bin/umount", name, NULL);
685:            errx(EXIT_FAILURE, _("unable to exec /bin/umount of `%s'"), name);

This should be easy to patch, but there are other utilities with the same
problem. A hopeless case seems to be "whereis": It looks for files in fixed
lists of locations such as
static const char *bindirs[] = {
        "/usr/bin",
        "/usr/sbin",
        "/usr/lib",
        "/usr/lib64",
        "/bin",
        "/sbin",
        "/etc",
        "/usr/etc",
        "/lib",
        "/lib64",
        "/usr/games",
        "/usr/games/bin",
        "/usr/games/lib",
        "/usr/emacs/etc",
        "/usr/lib/emacs/*/etc",
        "/usr/TeX/bin",
...

Andreas