Add nomodules kernel commandline parameter to disable loading of modules

git-svn-id: svn+ssh://svn.gentoo.org/var/svnroot/genkernel/trunk@675 67a159dc-881f-0410-a524-ba9dfbe2cb84

ChangeLog

@@ -2,6 +2,10 @@
 # Copyright 2006-2008 Gentoo Foundation; Distributed under the GPL v2
 # $Header: $
 
+  09 May 2008; Andrew Gaffney <agaffney@gentoo.org> generic/initrd.defaults,
+  generic/initrd.scripts, generic/linuxrc:
+  Add nomodules kernel commandline parameter to disable loading of modules
+
   09 May 2008; Andrew Gaffney <agaffney@gentoo.org> gen_funcs.sh, genkernel,
   genkernel.conf:
   Move distfile cache to /var/cache/genkernel/src and add check to make sure

generic/initrd.defaults

@@ -77,5 +77,5 @@ LOOPS='/livecd.loop /zisofs /livecd.squashfs /image.squashfs /livecd.gcloop'
 
 # Only sections that are in by default or those that
 # are not module groups need to be defined here...
-HWOPTS='keymap cache pata sata scsi usb firewire slowusb evms lvm dmraid mdadm fs net'
-MY_HWOPTS='pata sata scsi usb firewire dmraid mdadm fs net'
+HWOPTS='keymap cache modules pata sata scsi usb firewire slowusb evms lvm dmraid mdadm fs net'
+MY_HWOPTS='modules pata sata scsi usb firewire dmraid mdadm fs net'

generic/initrd.scripts

@@ -448,13 +448,11 @@ cmdline_hwopts() {
 		do
 			if [ "${y}" = "${x}" ]
 			then 
-				FOUND=1
+				continue 2
 			fi
 		done
-		if [ ! "${FOUND}" = '1' ]
-		then
 		TMP_HWOPTS="${TMP_HWOPTS} ${x}"
-		fi
+		eval DO_`echo ${x} | sed 's/-//'`=1
 	done
 
 	MY_HWOPTS=${TMP_HWOPTS}
@@ -470,7 +468,6 @@ load_modules() {
 		for modules in $MY_HWOPTS
 		do
 			modules_scan $modules
-			eval DO_`echo $modules | sed 's/-//'`=1
 		done
 	else
 		good_msg 'Skipping module load; no modules in the initrd!'

generic/linuxrc

@@ -203,7 +203,10 @@ mount_sysfs
 setup_hotplug
 
 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
-if [ -d "/lib/modules/${KV}" ]
+if [ -z "${DO_modules}" ]
+then
+	good_msg 'Skipping module load; disabled via commandline'
+elif [ -d "/lib/modules/${KV}" ]
 then
 	good_msg 'Loading modules'
 	# Load appropriate kernel modules
@@ -212,16 +215,11 @@ then
 		for modules in ${MY_HWOPTS}
 		do
 			modules_scan ${modules}
-			eval DO_`echo ${modules} | sed 's/-//'`=1
 		done
 	fi
 	# Always eval doload=...
 	modules_load ${MDOLIST}
 else
-	for modules in ${MY_HWOPTS}
-	do
-		eval DO_`echo ${modules} | sed 's/-//'`=1
-	done
 	good_msg 'Skipping module load; no modules in the initrd!'
 fi