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2c542f6c65
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Lucas Servén Marín 2c542f6c65
fix: create relative home path correctly 
Currently, supplying a relative path via the --prefix flag to the
useradd command triggers a bug in the creation of home directories. The
code seems to unintentionally prepend a leading "/" to all paths,
quietly transforming a relative prefixed home path into an absolute
path. This can be seen in the following strace logs from running
"useradd --create-home --prefix tmp/root squat":

```
access("tmp/root//home/squat", F_OK)    = -1 ENOENT (No such file or directory)
access("/mp", F_OK)                     = 0
access("/mp/root", F_OK)                = 0
access("/mp/root/home", F_OK)           = 0
access("/mp/root/home/squat", F_OK)     = -1 ENOENT (No such file or directory)
mkdir("/mp/root/home/squat", 000)       = 0
chown("/mp/root/home/squat", 0, 0)      = 0
chmod("/mp/root/home/squat", 0755)      = 0
chown("tmp/root//home/squat", 1000, 1000) = -1 ENOENT (No such file or directory)
chmod("tmp/root//home/squat", 0700)     = -1 ENOENT (No such file or directory)
```

Note that the relative path is correctly probed in the beginning and it
is only during the recursive creation that the path is turned into an
absolute path. This invocation results in the creation of a "/mp"
hierarchy in the root of the filesystem.

Similar problems occur when using `--prefix ./tmp/root`.

This commit fixes the handling of relative paths by not assuming that
the given path is anchored with a "/".

Signed-off-by: Lucas Servén Marín <lserven@gmail.com>
2021-04-29 15:06:53 +02:00
contrib spelling: thanks 2017-10-22 21:24:49 +00:00
doc spelling: moment 2017-10-22 20:39:14 +00:00
docs github pages takes an index.html 2019-06-09 00:02:45 -05:00
etc login & su: Treat an empty passwd field as invalid (#315) 2021-03-28 22:16:03 -05:00
lib subids: support nsswitch 2021-04-16 21:02:37 -05:00
libmisc subids: support nsswitch 2021-04-16 21:02:37 -05:00
libsubid clean up libsubid headers 2021-04-16 21:03:08 -05:00
man Merge pull request #314 from sevan/patch-1 2021-03-30 10:21:17 -05:00
po Fix incorrect translation (de) 2020-09-23 18:00:00 +02:00
src fix: create relative home path correctly 2021-04-29 15:06:53 +02:00
tests tests: fix su failures under travis 2021-04-16 21:03:08 -05:00
.gitignore ignore config.cache & dist files 2016-12-05 15:48:10 -05:00
.travis.yml subids: support nsswitch 2021-04-16 21:02:37 -05:00
acinclude.m4 [svn-upgrade] Integrating new upstream version, shadow (4.0.13) 2007-10-07 11:47:01 +00:00
autogen.sh Create a new libsubid 2020-06-07 12:11:58 -05:00
ChangeLog configure.ac: release 4.8.1 2020-01-23 14:56:43 -06:00
configure.ac subids: support nsswitch 2021-04-16 21:02:37 -05:00
COPYING Added the subversion svn:keywords property (Id) for proper identification. 2007-11-10 23:46:11 +00:00
Makefile.am Create a new libsubid 2020-06-07 12:11:58 -05:00
NEWS spelling: various 2017-10-22 21:33:42 +00:00
README Update the "README" file 2020-05-11 09:27:01 -04:00
shadow.spec.in * shadow.spec.in: Fix the source (new FTP). 2008-08-31 17:30:45 +00:00
TODO New entry for vipw. 2012-01-15 21:26:56 +00:00

README 

Shadow SITES
============

Homepage
	http://github.com/shadow-maint/shadow

Issue tracker
	http://github.com/shadow-maint/shadow/issues

Releases
	https://github.com/shadow-maint/shadow/releases

Mailing lists
	for general discuss: pkg-shadow-devel@alioth-lists.debian.net
	commit list: pkg-shadow-commits@alioth-lists.debian.net

Mailing lists subscription
	http://alioth-lists.debian.net/mailman/listinfo/pkg-shadow-devel
	http://alioth-lists.debian.net/mailman/listinfo/pkg-shadow-commits

Mailing lists archives:
	http://alioth-lists.debian.net/pipermail/pkg-shadow-devel/
	http://alioth-lists.debian.net/pipermail/pkg-shadow-commits/

S/Key support:
	Shadow can be built with S/Key support using the S/Key package from:

	http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libskey/
	or
	http://gentoo.osuosl.org/distfiles/skey-1.1.5.tar.bz2

Authors and contributors
========================

Thanks to at least the following people for sending patches, bug
reports and various comments.  This list may be incomplete, I received
a lot of mail...


Adam Rudnicki <adam@v-lo.krakow.pl>
Alan Curry <pacman@tardis.mars.net>
Aleksa Sarai <cyphar@cyphar.com>
Alexander O. Yuriev <alex@bach.cis.temple.edu>
Algis Rudys <arudys@rice.edu>
Andreas Jaeger <aj@arthur.rhein-neckar.de>
Aniello Del Sorbo <anidel@edu-gw.dia.unisa.it>
Anton Gluck <gluc@midway.uchicago.edu>
Arkadiusz Miskiewicz <misiek@pld.org.pl>
Ben Collins <bcollins@debian.org>
Brian R. Gaeke <brg@dgate.org>
Calle Karlsson <ckn@kash.se>
Chip Rosenthal <chip@unicom.com>
Chris Evans <lady0110@sable.ox.ac.uk>
Chris Lamb <chris@chris-lamb.co.uk>
Cristian Gafton <gafton@sorosis.ro>
Dan Walsh <dwalsh@redhat.com>
Darcy Boese <possum@chardonnay.niagara.com>
Dave Hagewood <admin@arrowweb.com>
David A. Holland <dholland@hcs.harvard.edu>
David Frey <David.Frey@lugs.ch>
Ed Carp <ecarp@netcom.com>
Ed Neville <ed@s5h.net>
Eric W. Biederman" <ebiederm@xmission.com>
Floody <flood@evcom.net>
Frank Denis <j@4u.net>
George Kraft IV <gk4@us.ibm.com>
Greg Mortensen <loki@world.std.com>
Guido van Rooij
Guy Maor <maor@debian.org>
Hrvoje Dogan <hdogan@bjesomar.srce.hr>
Jakub Hrozek <jhrozek@redhat.com>
Janos Farkas <chexum@bankinf.banki.hu>
Jason Franklin <jason.franklin@quoininc.com>
Jay Soffian <jay@lw.net>
Jesse Thilo <Jesse.Thilo@pobox.com>
Joey Hess <joey@kite.ml.org>
John Adelsberger <jja@umr.edu>
Jonathan Hankins <jhankins@mailserv.homewood.k12.al.us>
Jon Lewis <jlewis@lewis.org>
Joshua Cowan <jcowan@hermit.reslife.okstate.edu>
Judd Bourgeois <shagboy@bluesky.net>
Juergen Heinzl <unicorn@noris.net>
Juha Virtanen <jiivee@iki.fi>
Julian Pidancet <julian.pidancet@gmail.com>
Julianne Frances Haugh <jockgrrl@ix.netcom.com>
Leonard N. Zubkoff <lnz@dandelion.com>
Luca Berra <bluca@www.polimi.it>
Lukáš Kuklínek <lkukline@redhat.com>
Lutz Schwalowsky <schwalow@mineralogie.uni-hamburg.de>
Marc Ewing <marc@redhat.com>
Martin Bene <mb@sime.com>
Martin Mares <mj@gts.cz>
Michael Meskes <meskes@topsystem.de>
Michael Talbot-Wilson <mike@calypso.bns.com.au>
Michael Vetter <jubalh@iodoru.org>
Mike Frysinger <vapier@gentoo.org>
Mike Pakovic <mpakovic@users.southeast.net>
Nicolas François <nicolas.francois@centraliens.net>
Nikos Mavroyanopoulos <nmav@i-net.paiko.gr>
Pavel Machek <pavel@bug.ucw.cz>
Peter Vrabec <pvrabec@redhat.com>
Phillip Street
Rafał Maszkowski <rzm@icm.edu.pl>
Rani Chouha <ranibey@smartec.com>
Sami Kerola <kerolasa@rocketmail.com>
Scott Garman <scott.a.garman@intel.com>
Sebastian Rick Rijkers <srrijkers@gmail.com>
Seraphim Mellos <mellos@ceid.upatras.gr>
Shane Watts <shane@nexus.mlckew.edu.au>
Steve M. Robbins <steve@nyongwa.montreal.qc.ca>
Thorsten Kukuk <kukuk@suse.de>
Tim Hockin <thockin@eagle.ais.net>
Timo Karjalainen <timok@iki.fi>
Ulisses Alonso Camaro <ulisses@pusa.eleinf.uv.es>
Werner Fink <werner@suse.de>

Maintainers
===========

Tomasz Kłoczko <kloczek@pld.org.pl> (2000-2007)
Nicolas François <nicolas.francois@centraliens.net> (2007-2014)
Serge E. Hallyn <serge@hallyn.com> (2014-now)
Christian Brauner <christian@brauner.io> (2019-now)