[OE-core] [PATCH V3 3/3] usersettings.bbclass: add a new bbclass

[Qi.Chen at windriver.com]

From: Chen Qi <Qi.Chen at windriver.com>

This class is dedicated to image level user/group configuration.
It inherits userbase.bbclass.

Users need to inherit this class in their layers or local.conf to
make the setting of USER_GROUP_SETTINGS effective.

For detailed configuration format of USER_GROUP_SETTINGS, please
refer to local.conf.sample.extended.

[YOCTO #4074]

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
 meta/classes/usersettings.bbclass |   48 +++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 meta/classes/usersettings.bbclass

diff --git a/meta/classes/usersettings.bbclass b/meta/classes/usersettings.bbclass
new file mode 100644
index 0000000..e5a5156
--- /dev/null
+++ b/meta/classes/usersettings.bbclass
@@ -0,0 +1,48 @@
+# This bbclass is mainly used for image level user/group configuration.
+# Inherit this class if you want to make USER_GROUP_SETTINGS effective.
+inherit userbase
+
+IMAGE_INSTALL_append += "${@['', 'base-passwd shadow'][bool(d.getVar('USER_GROUP_SETTINGS', True))]}"
+
+# Image level user / group settings
+ROOTFS_POSTPROCESS_COMMAND_append = " set_user_group;"
+
+# Image level user / group settings
+set_user_group () {
+	user_group_settings="${USER_GROUP_SETTINGS}"
+	export PSEUDO="${FAKEROOTENV} ${STAGING_DIR_NATIVE}${bindir}/pseudo"
+	setting=`echo $user_group_settings | cut -d ';' -f1`
+	remaining=`echo $user_group_settings | cut -d ';' -f2-`
+	while test "x$setting" != "x"; do
+		action=`echo $setting | cut -d ',' -f1`
+		opts=`echo $setting | cut -d ',' -f2`
+		# Different from useradd.bbclass, there's no file locking issue here, as
+		# this setting is actually a serial process. So we only retry once.
+		case $action in
+			useradd)
+				perform_useradd "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
+				;;
+			groupadd)
+				perform_groupadd "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
+				;;
+			userdel)
+				perform_userdel "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
+				;;
+			groupdel)
+				perform_groupdel "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
+				;;
+			usermod)
+				perform_usermod "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
+				;;
+			groupmod)
+				perform_groupmod "${IMAGE_ROOTFS}" "-R ${IMAGE_ROOTFS} $opts" 1
+				;;
+			*)
+				bbfatal "Incorrect setting for USER_GROUP_SETTINGS"
+				;;
+		esac
+		# iterate to the next setting
+		setting=`echo $remaining | cut -d ';' -f1`
+		remaining=`echo $remaining | cut -d ';' -f2-`
+	done
+}
-- 
1.7.9.5