1 files changed, 21 insertions, 6 deletions
diff --git a/aports/busybox/persistent-storage b/aports/busybox/persistent-storage
index ea68948..4b821bc 100644
--- a/aports/busybox/persistent-storage
+++ b/aports/busybox/persistent-storage
@@ -7,10 +7,12 @@ symlink_action() {
 	esac
 }
 
+: ${SYSFS:=/sys}
+
 # cdrom symlink
 case "$MDEV" in
 	sr*|xvd*)
-		caps="$(cat /sys/block/$MDEV/capability 2>/dev/null)"
+		caps="$(cat $SYSFS/block/$MDEV/capability 2>/dev/null)"
 		if [ $(( 0x${caps:-0} & 8 )) -gt 0 ]; then
 			symlink_action $MDEV cdrom
 		fi
@@ -19,13 +21,13 @@ esac
 # by-id symlinks
 mkdir -p disk/by-id
 
-partition=$(cat /sys/class/block/$MDEV/partition 2>/dev/null)
+partition=$(cat $SYSFS/class/block/$MDEV/partition 2>/dev/null)
 case "$partition" in
 	[0-9]*) partsuffix="-part$partition";;
 esac
 
-wwid=$(cat /sys/class/block/$MDEV/wwid 2>/dev/null)
-: ${wwid:=$(cat /sys/class/block/$MDEV/device/wwid 2>/dev/null)}
+wwid=$(cat $SYSFS/class/block/$MDEV/wwid 2>/dev/null)
+: ${wwid:=$(cat $SYSFS/class/block/$MDEV/device/wwid 2>/dev/null)}
 
 if [ -n "$wwid" ]; then
 	case "$MDEV" in
@@ -37,10 +39,10 @@ if [ -n "$wwid" ]; then
 fi
 
 serial=$(sed -E -e 's/^\s+//' -e 's/\s+$//' -e 's/ /_/g' \
-	/sys/class/block/$MDEV/device/serial 2>/dev/null)
+	$SYSFS/class/block/$MDEV/device/serial 2>/dev/null)
 
 model=$(sed -E -e 's/^\s+//' -e 's/\s+$//' -e 's/ /_/g' \
-	/sys/class/block/$MDEV/device/model 2>/dev/null)
+	$SYSFS/class/block/$MDEV/device/model 2>/dev/null)
 
 if [ -n "$serial" ] && [ -n "$model" ]; then
 	case "$MDEV" in
@@ -66,3 +68,16 @@ if [ -n "$PARTUUID" ]; then
 	symlink_action ../../$MDEV disk/by-partuuid/$PARTUUID
 fi
 
+# backwards compatibility with /dev/usbdisk for /dev/sd*
+if [ "${MDEV#sd}" != "$MDEV" ]; then
+	sysdev=$(readlink $SYSFS/class/block/$MDEV)
+	case "$sysdev" in
+		*usb[0-9]*)
+			# require vfat for devices without partition
+			if ! [ -e $SYSFS/block/$MDEV ] || [ TYPE="vfat" ]; then
+				symlink_action $MDEV usbdisk
+			fi
+			;;
+	esac
+fi
+