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| author | Felix Fietkau <nbd@openwrt.org> | 2015-01-17 21:19:24 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2015-01-17 21:19:24 +0000 |
| commit | f5cab4828c9eb81eaaf3b0526ea4babb695e2290 (patch) | |
| tree | 5de411f245c38a12d77ccaed98580e0cb96ea394 /include/image.mk | |
| parent | 5e8bc7088b9e290df2f1f2da8f45d4567738abbb (diff) | |
| download | upstream-f5cab4828c9eb81eaaf3b0526ea4babb695e2290.tar.gz upstream-f5cab4828c9eb81eaaf3b0526ea4babb695e2290.tar.bz2 upstream-f5cab4828c9eb81eaaf3b0526ea4babb695e2290.zip | |
build: add image makefile helper function for pading with an offset
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 44012
Diffstat (limited to 'include/image.mk')
| -rw-r--r-- | include/image.mk | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/image.mk b/include/image.mk index e64020132f..06feef5516 100644 --- a/include/image.mk +++ b/include/image.mk @@ -307,6 +307,17 @@ define Build/pad-rootfs $(call prepare_generic_squashfs,$@) endef +define Build/pad-offset + let \ + size="$$(stat -c%s $@)" \ + pad="$(word 1, $(1))" \ + offset="$(word 2, $(1))" \ + pad="(pad - ((size + offset) % pad)) % pad" \ + newsize='size + pad'; \ + dd if=$@ of=$@.new bs=$$newsize count=1 conv=sync + mv $@.new $@ +endef + define Build/check-size @[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -gt "$$(stat -c%s $@)" ] || { \ echo "WARNING: Image file $@ is too big"; \ |