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| author | Daniel Golle <daniel@makrotopia.org> | 2022-03-24 03:25:28 +0000 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2022-03-24 03:28:50 +0000 |
| commit | 29d7461d1135b91905120a44dc028b786693ecc4 (patch) | |
| tree | 8bcafe6d7c20979f5774573a0648ed9bfef7f38e /include | |
| parent | d3a4607fc61f890d5d4bedef6e542046038294d9 (diff) | |
| download | upstream-29d7461d1135b91905120a44dc028b786693ecc4.tar.gz upstream-29d7461d1135b91905120a44dc028b786693ecc4.tar.bz2 upstream-29d7461d1135b91905120a44dc028b786693ecc4.zip | |
kernel: set options to make external initramfs reproducible
Run cpio as well as compressors in such ways that they are generating
reproducible output.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/kernel-defaults.mk | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk index 5a061a5178..af1d59c481 100644 --- a/include/kernel-defaults.mk +++ b/include/kernel-defaults.mk @@ -174,13 +174,14 @@ ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS_SEPARATE),y) ifneq ($(qstrip $(CONFIG_EXTERNAL_CPIO)),) $(CP) $(CONFIG_EXTERNAL_CPIO) $(KERNEL_BUILD_DIR)/initrd.cpio else - ( cd $(TARGET_DIR); find . | $(STAGING_DIR_HOST)/bin/cpio -o -H newc -R 0:0 > $(KERNEL_BUILD_DIR)/initrd.cpio ) + ( cd $(TARGET_DIR); find . | LC_ALL=C sort | $(STAGING_DIR_HOST)/bin/cpio --reproducible -o -H newc -R 0:0 > $(KERNEL_BUILD_DIR)/initrd.cpio ) endif + $(if $(SOURCE_DATE_EPOCH),touch -hcd "@$(SOURCE_DATE_EPOCH)" $(KERNEL_BUILD_DIR)/initrd.cpio) $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2),bzip2 -9 -c < $(KERNEL_BUILD_DIR)/initrd.cpio > $(KERNEL_BUILD_DIR)/initrd.cpio.bzip2) - $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP),gzip -f -S .gzip -9n $(KERNEL_BUILD_DIR)/initrd.cpio) + $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP),gzip -n -f -S .gzip -9n $(KERNEL_BUILD_DIR)/initrd.cpio) $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA),$(STAGING_DIR_HOST)/bin/lzma e -lc1 -lp2 -pb2 $(KERNEL_BUILD_DIR)/initrd.cpio $(KERNEL_BUILD_DIR)/initrd.cpio.lzma) # ? $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO),) - $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ),$(STAGING_DIR_HOST)/bin/xz -9 -fz --check=crc32 $(KERNEL_BUILD_DIR)/initrd.cpio) + $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ),$(STAGING_DIR_HOST)/bin/xz -T0 -9 -fz --check=crc32 $(KERNEL_BUILD_DIR)/initrd.cpio) # ? $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZ4),) $(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_ZSTD),$(STAGING_DIR_HOST)/bin/zstd -T0 -f -o $(KERNEL_BUILD_DIR)/initrd.cpio.zstd $(KERNEL_BUILD_DIR)/initrd.cpio) endif |