[oe-commits] Otavio Salvador : initramfs-live-boot: make it more generic and easy to use

[git at git.openembedded.org]

Module: openembedded-core.git
Branch: master
Commit: 3fc8cec53038f41d31344040c56d62aac90ba7e0
URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=3fc8cec53038f41d31344040c56d62aac90ba7e0

Author: Otavio Salvador <otavio at ossystems.com.br>
Date:   Tue Oct 11 19:18:50 2011 +0000

initramfs-live-boot: make it more generic and easy to use

The script was making some assumptions that enforced many requirement
in the machine kernel configuration and usage, besides it were too
while booting.

Changes included:

 * fix indentation;
 * rdepends on udev;
 * allow use of isofs as module;
 * remove rootdelay param parsing as it was unused;
 * don't verbosely kill udevd and mknod;
 * mount devtmpfs into rootfs, if available, before swithing root;

Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>

---

 meta/recipes-core/initrdscripts/files/init-live.sh |   32 ++++++++++++-------
 .../initrdscripts/initramfs-live-boot_1.0.bb       |    3 +-
 2 files changed, 22 insertions(+), 13 deletions(-)

diff --git a/meta/recipes-core/initrdscripts/files/init-live.sh b/meta/recipes-core/initrdscripts/files/init-live.sh
index c054863..eb5ab5b 100644
--- a/meta/recipes-core/initrdscripts/files/init-live.sh
+++ b/meta/recipes-core/initrdscripts/files/init-live.sh
@@ -13,6 +13,11 @@ early_setup() {
     mkdir /sys
     mount -t proc proc /proc
     mount -t sysfs sysfs /sys
+
+    # support modular kernel
+    modprobe isofs 2> /dev/null
+
+    mkdir /run
     udevd --daemon
     udevadm trigger --action=add
 }
@@ -25,21 +30,25 @@ read_args() {
             root=*)
                 ROOT_DEVICE=$optarg ;;
             rootfstype=*)
-                ROOT_FSTYPE=$optarg ;;
-            rootdelay=*)
-                rootdelay=$optarg ;;
-	    LABEL=*)
-		label=$optarg ;;
-	    video=*)
-		video_mode=$arg ;;
-	    vga=*)
-		vga_mode=$arg ;;
+                modprobe $optarg 2> /dev/null ;;
+            LABEL=*)
+                label=$optarg ;;
+            video=*)
+                video_mode=$arg ;;
+            vga=*)
+                vga_mode=$arg ;;
         esac
     done
 }
 
 boot_live_root() {
-    killall udevd
+    killall udevd 2>/dev/null
+
+    # use devtmpfs if available
+    if grep -q devtmpfs /proc/filesystems; then
+        mount -t devtmpfs devtmpfs $ROOT_MOUNT/dev
+    fi
+
     cd $ROOT_MOUNT
     exec switch_root -c /dev/console $ROOT_MOUNT /sbin/init
 }
@@ -78,7 +87,7 @@ done
 case $label in
     boot)
 	mkdir $ROOT_MOUNT
-	mknod /dev/loop0 b 7 0
+	mknod /dev/loop0 b 7 0 2>/dev/null
 
 	if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ISOLINUX/$ROOT_IMAGE $ROOT_MOUNT ; then
 	    fatal "Couldnt mount rootfs image"
@@ -97,4 +106,3 @@ case $label in
 	fatal "Installation image failed"
 	;;
 esac
-
diff --git a/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb b/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb
index b404f8c..e85a0e1 100644
--- a/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb
+++ b/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb
@@ -1,9 +1,10 @@
 DESCRIPTION = "A live image init script"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+RDEPENDS = "udev"
 SRC_URI = "file://init-live.sh"
 
-PR = "r6"
+PR = "r7"
 
 do_install() {
         install -m 0755 ${WORKDIR}/init-live.sh ${D}/init