From: Matthias Schiffer Date: Sun, 3 Jul 2016 19:15:49 +0200 Subject: x86: stop relying on hexdump for image build signature Use perl to generate random number instead. See https://github.com/freifunk-gluon/gluon/issues/811 Signed-off-by: Felix Fietkau Backport of LEDE d5ee23ee275fcd6550b0051de59706cc928cdac8 diff --git a/target/linux/x86/image/Makefile b/target/linux/x86/image/Makefile index e7e02f15fbb3d1638b26982e7ddff305464e6851..6f64eba398e34093308b766839e69780512a4ca8 100644 --- a/target/linux/x86/image/Makefile +++ b/target/linux/x86/image/Makefile @@ -40,7 +40,7 @@ ifneq ($(GRUB_TERMINALS),) GRUB_TERMINAL_CONFIG := terminal_input $(GRUB_TERMINALS); terminal_output $(GRUB_TERMINALS) endif -SIGNATURE:=$(shell dd if=/dev/urandom bs=4 count=1 2>/dev/null | hexdump -v -e '"%08x"') +SIGNATURE:=$(shell perl -e 'printf("%08x", rand(0xFFFFFFFF))') ROOTPART:=$(call qstrip,$(CONFIG_TARGET_ROOTFS_PARTNAME)) ROOTPART:=$(if $(ROOTPART),$(ROOTPART),PARTUUID=$(SIGNATURE)-02)