Bug 373808: init.d/modules skipped certain variable combinations

The version iteration code missed certain combinations:
KV=1.2.3.4
skips: 1.2.3, 1
KV=1.2.3
skips: 1

Simplify the code to use a loop and build the list of versions directly
instead of unique variables per version component.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

2 files changed, 21 insertions, 17 deletions

diff --git a/conf.d/modules b/conf.d/modules
index c5a3627..a062a62 100644
--- a/conf.d/modules
+++ b/conf.d/modules
@@ -1,8 +1,10 @@
 # You can define a list modules for a specific kernel version,
 # a released kernel version, a main kernel version or just a list.
+# The most specific versioned variable will take precedence.
 #modules_2_6_23_gentoo_r5="ieee1394 ohci1394"
 #modules_2_6_23="tun ieee1394"
 #modules_2_6="tun"
+#modules_2="ipv6"
 #modules="ohci1394"
 
 # You can give modules a different name when they load - the new name
@@ -10,10 +12,12 @@
 #modules="dummy:dummy1"
 
 # Give the modules some arguments if needed, per version if necessary.
+# Again, the most specific versioned variable will take precedence.
 #module_ieee1394_args="debug"
-#module_ieee1394_args_2_6_23_gentoo_r5="ieee1394 ohci1394"
-#module_ieee1394_args_2_6_23="tun ieee1394"
-#module_ieee1394_args_2_6="tun"
+#module_ieee1394_args_2_6_23_gentoo_r5="debug2"
+#module_ieee1394_args_2_6_23="debug3"
+#module_ieee1394_args_2_6="debug4"
+#module_ieee1394_args_2="debug5"
 
 # You should consult your kernel documentation and configuration
 # for a list of modules and their options.
diff --git a/init.d/modules.in b/init.d/modules.in
index ee4fdab..631e2e5 100644
--- a/init.d/modules.in
+++ b/init.d/modules.in
@@ -16,18 +16,21 @@ start()
 	# support compiled in ...
 	[ ! -f /proc/modules ] && return 0
 
-	local KV=$(uname -r)
-	local KV_MAJOR=${KV%%.*}
-	local x=${KV#*.}
-	local KV_MINOR=${x%%.*}
-	x=${KV#*.*.}
-	local KV_MICRO=${x%%-*}
+	local KV x y kv_variant_list
+	KV=$(uname -r)
+	# full $KV
+	kv_variant_list="${KV}"
+	# remove any KV_EXTRA options to just get the full version
+	x=${KV%%-*}
+	# now slowly strip them
+	while [ -n "$x" ] && [ "$x" != "$y" ]; do 
+		kv_variant_list="${kv_variant_list} $x"
+		y=$x
+		x=${x%.*}
+	done 
 
 	local list= x= xx= y= args= mpargs= cnt=0 a=
-	for x in "$KV" \
-		$KV_MAJOR.$KV_MINOR.$KV_MICRO \
-		$KV_MAJOR.$KV_MINOR \
-	; do
+	for x in $kv_variant_list ; do
 		eval list=\$modules_$(shell_var "$x")
 		[ -n "$list" ] && break
 	done
@@ -45,10 +48,7 @@ start()
 		fi
 		aa=$(shell_var "$a")
 		xx=$(shell_var "$x")
-		for y in "$KV" \
-			$KV_MAJOR.$KV_MINOR.$KV_MICRO \
-			$KV_MAJOR.$KV_MINOR \
-		; do
+		for y in $kv_variant_list ; do
 			eval args=\$module_${aa}_args_$(shell_var "$y")
 			[ -n "${args}" ] && break
 			eval args=\$module_${xx}_args_$(shell_var "$y")