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
2015-06-15 07:45:36 +00:00 · 2015-06-15 07:45:36 +00:00 · 61a0b05dbf
parent a417bf9f43
commit 61a0b05dbf
1 changed files with 5 additions and 0 deletions
--- 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