[patch] 0001-Use-tmpfs-if-devtmpfs-is-not-available.patch

0001-Use-tmpfs-if-devtmpfs-is-not-available.patch (text/plain), 1.85 KB, created by Xake on 2011-02-07 18:32:48 UTC

From 253f9ddfcb791f327822203fbceb87060b5f10be Mon Sep 17 00:00:00 2001
From: Peter Hjalmarsson <[e-mail]>
Date: Mon, 7 Feb 2011 16:02:41 +0100
Subject: [PATCH] Use tmpfs if devtmpfs is not available

This makes the ramdisk always mount some kind of /dev,
and then try to move it to the new root.
This unbreaks handling of nodes created pre-udev likefor example lvm does.
---
 defaults/initrd.scripts |   12 +++++++-----
 defaults/linuxrc        |    4 ++--
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/defaults/initrd.scripts b/defaults/initrd.scripts
index ee26918..1fda57d 100755
--- a/defaults/initrd.scripts
+++ b/defaults/initrd.scripts
@@ -308,13 +308,15 @@ run_shell() {
 
 runmdev() {
 	# Use devtmpfs if enabled in kernel,
-	# else busybox udev replacement
+	# else tmpfs. Always run mdev just in case
+	devfs=tmpfs
 	if grep -qs devtmpfs /proc/filesystems ; then
-		# Options copied from /etc/init.d/udev-mount, should probably be kept in sync
-		mount -t devtmpfs -o "exec,nosuid,mode=0755,size=10M" udev /dev
-	else
-		mdev -s
+		devfs=devtmpfs
 	fi
+
+	# Options copied from /etc/init.d/udev-mount, should probably be kept in sync
+	mount -t $devfs -o "exec,nosuid,mode=0755,size=10M" udev /dev
+	mdev -s
 }
 
 test_success() {
diff --git a/defaults/linuxrc b/defaults/linuxrc
index b42070c..f1e124b 100755
--- a/defaults/linuxrc
+++ b/defaults/linuxrc
@@ -727,11 +727,11 @@ echo -ne "${BOLD}.${NORMAL}"
 
 # If devtmpfs is mounted, try move it to the new root
 # If that fails, try to unmount all possible mounts of devtmpfs as stuff breaks otherwise
-if grep -qs devtmpfs /proc/mounts
+if grep -qs "/dev " /proc/mounts
 then
 	if ! mount --move /dev "${CHROOT}"/dev
 	then
-		umount -t devtmpfs || echo '*: Failed to move and unmount the devtmpfs /dev!'
+		umount /dev || echo '*: Failed to move and unmount the ramdisk /dev!'
 	fi
 fi
 
-- 
1.7.4