From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 15 Jun 2015 07:45:36 +0000 (+0000)
Subject: image.mk: add Build step pad-to
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=61a0b05dbf0d163f6659f68a65b2b6a2aa3dbb26;p=openwrt%2Fstaging%2Fblocktrron.git

image.mk: add Build step pad-to

pad-to can be used in a pipe to pad the image to a specific chunk-size.
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>

SVN-Revision: 45980
---

diff --git a/include/image.mk b/include/image.mk
index 287c679cfd..814e7dc5d1 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -304,6 +304,11 @@ define Build/append-rootfs
 	dd if=$(word 2,$^) $(if $(1),bs=$(1) conv=sync) >> $@
 endef
 
+define Build/pad-to
+	dd if=$@ of=$@.new bs=$(1) conv=sync
+	mv $@.new $@
+endef
+
 define Build/pad-rootfs
 	$(call prepare_generic_squashfs,$@ $(1))
 endef