X-Git-Url: https://git.archive.openwrt.org/?p=openwrt.git;a=blobdiff_plain;f=package%2Fbase-files%2Ffiles%2Flib%2Ffunctions.sh;h=6f23e0b8b2ea57fedc0cf3ae8d1f300e843a1516;hp=85ebc2aeb16143826ca07c82579d4a4970e1bd70;hb=1cd654611f450bd2ce579590a9118e7c84712587;hpb=0eed0af1d6d697a9fd82271544cfb3e38062861f;ds=inline

diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
index 85ebc2aeb1..6f23e0b8b2 100755
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -260,6 +260,26 @@ mtd_get_mac_ascii()
 	[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
 }
 
+mtd_get_blob()
+{
+	local mtdname="$1"
+	local offset="$2"
+	local count="$3"
+	local firmware="$4"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_blob: partition $mtdname not found!" >&2
+		return 1
+	fi
+
+	dd if=$part of=$firmware bs=1 skip=$offset count=$count 2>/dev/null || {
+		echo "mtd_get_blob: failed to extract $firmware from $part" >&2
+		return 1
+	}
+}
+
 mtd_get_mac_binary() {
 	local mtdname="$1"
 	local offset="$2"