[oe-commits] Chen Qi : useradd.bbclass: avoid do_rootfs error for debian package backend

[git at git.openembedded.org]

Module: openembedded-core.git
Branch: master-next
Commit: d9295011839027a885b5910cc407840e582eb5ea
URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=d9295011839027a885b5910cc407840e582eb5ea

Author: Chen Qi <Qi.Chen at windriver.com>
Date:   Tue Feb 17 10:08:15 2015 +0800

useradd.bbclass: avoid do_rootfs error for debian package backend

If /etc/login.defs is treated as a configuration file, then we would meet
errors at do_rootfs time telling us that useradd/groupadd cannot execute
correctly.

This is because the dpkg handles config file specially, the login.defs
is temporarily renamed as login.defs.dpkg-new.

How ubuntu deals the user/group adding problem? They do it at postinst of the
package. And, the postinst script of a package would possibly do `chown' of
its files or directories.

The above strategy is not suitable for OE. Because we do chown in do_install
and add user/group in preinst scripts of the packages.

That's why we need this patch so that do_rootfs don't fail.

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>

---

 meta/classes/useradd.bbclass | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/meta/classes/useradd.bbclass b/meta/classes/useradd.bbclass
index 0b9a843..e443f84 100644
--- a/meta/classes/useradd.bbclass
+++ b/meta/classes/useradd.bbclass
@@ -24,6 +24,16 @@ if test "x$D" != "x"; then
 	# Installing into a sysroot
 	SYSROOT="$D"
 	OPT="--root $D"
+
+	# Make sure login.defs is there, this is to make debian package backend work
+	# correctly while doing rootfs.
+	# The problem here is that if /etc/login.defs is treated as a config file for
+	# shadow package, then while performing preinsts for packages that depend on
+	# shadow, there might only be /etc/login.def.dpkg-new there in root filesystem.
+	if [ ! -e $D${sysconfdir}/login.defs -a -e $D${sysconfdir}/login.defs.dpkg-new ]; then
+	    cp $D${sysconfdir}/login.defs.dpkg-new $D${sysconfdir}/login.defs
+	fi
+
 	# user/group lookups should match useradd/groupadd --root
 	export PSEUDO_PASSWD="$SYSROOT:${STAGING_DIR_NATIVE}"
 fi