add failsafe support for x86-2.6 and fix mdev support for platforms using /etc/preinit

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6481 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 22 insertions, 11 deletions

diff --git a/package/base-files/files/sbin/mount_root b/package/base-files/files/sbin/mount_root
index 607877c64..4fa048f43 100755
--- a/package/base-files/files/sbin/mount_root
+++ b/package/base-files/files/sbin/mount_root
@@ -5,17 +5,28 @@
 mount none /proc -t proc
 size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
 mount none /tmp -t tmpfs -o size=$size,nosuid,nodev,mode=1777
-
-grep rootfs /proc/mtd >/dev/null 2>/dev/null && {
-	mtd unlock rootfs
-	grep rootfs_data /proc/mtd >/dev/null 2>/dev/null && {
-		. /bin/firstboot
-		echo "switching to jffs2"
-		mount "$(find_mtd_part rootfs_data)" /jffs -t jffs2
-		fopivot /jffs /rom
-	}
-} || mount -o remount,rw /dev/root /
-
+if grep devfs /proc/filesystems > /dev/null; then
+	mount none /dev -t devfs
+else
+	mount -t sysfs none /sys
+	mount -t tmpfs tmpfs /dev -o size=512K
+	mknod /dev/console c 5 1
+	mkdir /dev/shm
+	/sbin/mdev -s
+fi
 mkdir -p /dev/pts
 mount none /dev/pts -t devpts
+
+[ failsafe != "$1" ] && {
+	grep rootfs /proc/mtd >/dev/null 2>/dev/null && {
+		mtd unlock rootfs
+		grep rootfs_data /proc/mtd >/dev/null 2>/dev/null && {
+			. /bin/firstboot
+			echo "switching to jffs2"
+			mount "$(find_mtd_part rootfs_data)" /jffs -t jffs2
+			fopivot /jffs /rom
+		}
+	} || mount -o remount,rw /dev/root /
+}
+
 grep sysfs /proc/filesystems >/dev/null && mount -t sysfs none /sys 2>&-