From ac5ecaf86809a999d68d851c2200705a8f10a7b0 Mon Sep 17 00:00:00 2001 From: Casey Reeves Date: Mon, 16 Jan 2023 09:33:52 +0100 Subject: [PATCH] fs/erofs: enable support for reproducible build By default, mkfs.erofs will sue the current date to set some metadata in the filesystem it generates, and will also use generate a random UUID for that filesystem. This is not reproducible. When BR2_REPRODUCIBLE is selected, set the filesystem timestamps to $SOURCE_DATE_EPOCH, and the filesystem UUID to the nil uuid (as good as any other arbitrary one). Signed-off-by: Casey Reeves [yann.morin.1998@free.fr: - one multi-line assignment, not two - slightly rephrase the commit log ] Signed-off-by: Yann E. MORIN --- fs/erofs/erofs.mk | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/erofs/erofs.mk b/fs/erofs/erofs.mk index 0e9d4401a9..e43d74927b 100644 --- a/fs/erofs/erofs.mk +++ b/fs/erofs/erofs.mk @@ -10,6 +10,12 @@ ifeq ($(BR2_TARGET_ROOTFS_EROFS_LZ4HC),y) ROOTFS_EROFS_ARGS += -zlz4hc endif +ifeq ($(BR2_REPRODUCIBLE),y) +ROOTFS_EROFS_ARGS += \ + -T $(SOURCE_DATE_EPOCH) \ + -U 00000000-0000-0000-0000-000000000000 +endif + ifneq ($(BR2_TARGET_ROOTFS_EROFS_PCLUSTERSIZE),0) ROOTFS_EROFS_ARGS += -C$(strip $(BR2_TARGET_ROOTFS_EROFS_PCLUSTERSIZE)) endif