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-rw-r--r--main/busybox-initscripts/usbdisk_link34
1 files changed, 34 insertions, 0 deletions
diff --git a/main/busybox-initscripts/usbdisk_link b/main/busybox-initscripts/usbdisk_link
new file mode 100644
index 0000000000..750242bb5c
--- /dev/null
+++ b/main/busybox-initscripts/usbdisk_link
@@ -0,0 +1,34 @@
+#!/bin/sh
+
+# NOTE: since mdev -s only provide $MDEV, don't depend on any hotplug vars.
+
+current=$(readlink usbdisk)
+
+if [ "$current" = "$MDEV" ] && [ "$ACTION" = "remove" ]; then
+ rm -f usbdisk usba1
+fi
+[ -n "$current" ] && exit
+
+if [ -e /sys/block/$MDEV ]; then
+ SYSDEV=$(readlink -f /sys/block/$MDEV/device)
+ # if /sys device path contains '/usb[0-9]' then we assume its usb
+ # also, if its an usb without partitions we require FAT
+ if [ "${SYSDEV##*/usb[0-9]}" != "$SYSDEV" ]; then
+ # do not create link if there is not FAT
+ dd if=/dev/$MDEV bs=512 count=1 2>/dev/null | strings | grep FAT >/dev/null || exit 0
+
+ ln -sf $MDEV usbdisk
+ # keep this for compat. people have it in fstab
+ ln -sf $MDEV usba1
+ fi
+
+elif [ -e /sys/block/*/$MDEV ] ; then
+ PARENT=$(dirname /sys/block/*/$MDEV)
+ SYSDEV=$(readlink -f $PARENT/device)
+ if [ "${SYSDEV##*/usb[0-9]}" != "$SYSDEV" ]; then
+ ln -sf $MDEV usbdisk
+ # keep this for compat. people have it in fstab
+ ln -sf $MDEV usba1
+ fi
+fi
+