restructure

device-helper

@@ -0,0 +1,40 @@
+#!/bin/sh -f
+#
+# create /dev/disk/by-* and /dev/mapper/* symlinks
+
+create_symlink()
+{
+    sym="$1"
+    sym="${sym%\"}"
+    sym="${sym#\"}"
+    sym="${dir}${sym}"
+
+    mkdir -p "$dir" 2> /dev/null
+    ln    -s "/dev/${MDEV}" "$sym" 2> /dev/null
+}
+
+# int main()
+{
+    [ "$MDEV" ] || exit 1
+
+    for line in $(blkid "$MDEV"); do case "${line%%=*}" in
+        UUID)
+            dir="/dev/disk/by-uuid/"
+            create_symlink "${line##*=}"
+        ;;
+        LABEL)
+            dir="/dev/disk/by-label/"
+            create_symlink "${line##*=}"
+        ;;
+        PARTUUID)
+            dir="/dev/disk/by-partuuid/"
+            create_symlink "${line##*=}"
+        ;;
+    esac; done
+
+    [ -e "/sys/block/${MDEV}/dm/name" ] && {
+        mkdir -p /dev/mapper 2> /dev/null
+        read  -r name < "/sys/block/${MDEV}/dm/name"
+        ln    -s "/dev/${MDEV}" "/dev/mapper/${name}" 2> /dev/null
+    }
+}