add lookup function for mtd parts

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@5299 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/default/etc/functions.sh b/package/base-files/default/etc/functions.sh
index 2abb6f8..bf87548 100755 (executable)
--- a/package/base-files/default/etc/functions.sh
+++ b/package/base-files/default/etc/functions.sh
@@ -110,3 +110,10 @@ include() {
                . $file
        done
 }
+
+find_mtd_part() {
+       local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
+       PART="${PART##mtd}"
+       echo "${PART:+/dev/mtdblock/$PART}"
+}
+