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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.

(From OE-Core rev: d98e5ec575f542b3afaabd96b07ae9a21e1c22f4)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Chen Qi 2015-02-17 10:08:15 +08:00 committed by Richard Purdie
parent 3d7c798dff
commit 9973ce1703
1 changed files with 10 additions and 0 deletions
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meta/classes/useradd.bbclass
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@ -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