initial live autologin

use/live/autologin target tries hard to configure any available
autologin means, including a dedicated package and a few DMs.

Thanks gns@ as liveflash.eeepc got robbed somewhat.

features.in/live/config.mk

@@ -4,8 +4,13 @@ use/live: use/stage2 sub/stage2/live
 use/live/base: use/live use/syslinux/ui-menu
 	@$(call add,LIVE_LISTS,$(call tags,base && (live || network)))
 
-use/live/icewm: use/live/base
-	@$(call add,LIVE_LISTS,\
+# NB: there's an unconditional live/image-scripts.d/40-autologin script
+#     *but* it only configures some of the *existing* means; let's add one
+use/live/autologin: use/live/base
+	@$(call add,LIVE_PACKAGES,autologin xinit)
+
+use/live/icewm: use/live/autologin
+	@$(call add,LIVE_LISTS, \
 		$(call tags,(base || desktop) && (live || network || icewm)))
 
 # this is a manual installation script (text-based)

features.in/live/live/image-scripts.d/40-autologin

@@ -0,0 +1,34 @@
+#!/bin/sh -ef
+USER=altlinux
+
+# setup runlevel
+INITTAB=/etc/inittab
+if [ -f "$INITTAB" ]; then
+	[ -z "$runlevel" ] && runlevel=5
+	subst "s,^\(id:\)\(.*\)\(:initdefault.*\),\\1$runlevel\\3," "$INITTAB"
+fi
+
+# autologin^2
+if [ -x /usr/sbin/autologin ]; then
+	cat << E_O_F >> /etc/sysconfig/autologin
+USER=$USER
+AUTOLOGIN=yes
+E_O_F
+fi
+
+# gdm2 autologin
+GDM_CONF=/etc/X11/gdm/custom.conf
+if [ -f "$GDM_CONF" ]; then
+	sed -i -e '/\[daemon\]/aAutomaticLoginEnable=true\nAutomaticLogin='$USER \
+		"$GDM_CONF"
+fi
+
+# kdm3 autologin
+# TODO: iterate over kdm{,4} if feasible
+KDMRC=/etc/X11/kdm/kdmrc
+if [ -f "$KDMRC" ]; then
+	sed -i \
+		-e '/AutoLoginEnable/ s,^.*$,AutoLoginEnable=true,' \
+		-e '/AutoLoginUser/ s,^.*$,AutoLoginUser='$USER',' \
+		"$KDMRC"
+fi