Do a generic fallback based on provides of 'service(graphical-login)' (#485751, essentially.)

This removes hardcoded fallbacks.

1 files changed, 9 insertions, 5 deletions

diff --git a/prefdm b/prefdm
index 57cfafc9..10b679d5 100755
--- a/prefdm
+++ b/prefdm
@@ -35,10 +35,14 @@ shopt -s execfail
 
 [ -n "$preferred" ] && exec $preferred "$@" >/dev/null 2>&1 </dev/null
 
-# Fallbacks, in order
-exec gdm "$@" >/dev/null 2>&1 </dev/null
-exec kdm "$@" >/dev/null 2>&1 </dev/null
-exec wdm "$@" >/dev/null 2>&1 </dev/null
-exec xdm "$@" >/dev/null 2>&1 </dev/null
+for pkg in $(rpm -q --qf "%{NAME}\n" --whatprovides "service(graphical-login)") ; do
+	dm=$(rpm -q --provides $pkg | awk '/^service\(graphical-login\)/ { print $3 ; exit }')
+	if [ -n "$dm" ]; then
+		exec $dm "$@" >/dev/null 2>&1 </dev/null
+	else
+		exec $pkg "$@" >/dev/null 2>&1 </dev/null
+	fi
+done
+
 # catch all exit error
 exit 1