From ec426a6387ca49376a3af6093978bfc1388528d7 Mon Sep 17 00:00:00 2001
From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Sun, 23 Oct 2022 00:00:00 +0200
Subject: [PATCH] gnu: memtest86+: Build reproducibly.

Based on Debian's incomplete patch:
<https://salsa.debian.org/debian/memtest86plus/-/blob/81d81a39103b383eb269dc5094b4538615e54d39/debian/patches/reproducible-builds.patch>.
---
 build32/Makefile | 12 ++++++++----
 build64/Makefile | 12 ++++++++----
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/build32/Makefile b/build32/Makefile
index 8f3d427..d4e69ff 100644
--- a/build32/Makefile
+++ b/build32/Makefile
@@ -69,6 +69,8 @@ OBJS = boot/startup.o boot/efisetup.o $(SYS_OBJS) $(LIB_OBJS) $(TST_OBJS) $(APP_
 
 all: memtest.bin memtest.efi
 
+export TZ=UTC
+
 -include boot/efisetup.d
 -include $(subst .o,.d,$(SYS_OBJS))
 -include $(subst .o,.d,$(LIB_OBJS))
@@ -153,13 +155,14 @@ esp.img: memtest.efi
 	@mkdir -p iso/EFI/BOOT
 	cp memtest.efi iso/EFI/BOOT/bootia32.efi
 	@rm -f esp.img
-	/sbin/mkdosfs -n MEMTEST-ESP -F12 -C esp.img 4096
+	/sbin/mkdosfs -i 12345678 --invariant -n MEMTEST-ESP -F12 -C esp.img 4096
 	mcopy -s -i esp.img iso/EFI ::
 
 memtest.iso: memtest.mbr floppy.img esp.img
 	@mkdir -p iso/boot
 	cp floppy.img iso/boot/floppy.img
-	xorrisofs -pad -R -J -volid MT86PLUS_32 -graft-points -hide-rr-moved --grub2-mbr memtest.mbr \
+	xorrisofs --set_all_file_dates "=$$SOURCE_DATE_EPOCH" -uid 1000 -gid 1000 \
+                  -pad -R -J -volid MT86PLUS_32 -graft-points -hide-rr-moved --grub2-mbr memtest.mbr \
 		  -b /boot/floppy.img --efi-boot --interval:appended_partition_2:all:: \
 		  -part_like_isohybrid -iso_mbr_part_type 0x00 -append_partition 2 0xef ./esp.img \
 		  -o ./memtest.iso /boot=./iso/boot /EFI=./iso/EFI
@@ -210,7 +213,7 @@ grub-esp.img: memtest.efi grub-bootia32.efi ../grub/${GRUB_CFG}-efi.cfg
 	cp $(GRUB_FONT_DIR)/unicode.pf2 grub-iso/EFI/BOOT/grub/fonts/
 	cp $(GRUB_LIB_DIR)/i386-efi/*.mod grub-iso/EFI/BOOT/grub/i386-efi/
 	@rm -f grub-esp.img
-	/sbin/mkdosfs -n MT86P_ESP -F12 -C grub-esp.img 8192
+	/sbin/mkdosfs -i 12345678 --invariant -n MT86P_ESP -F12 -C grub-esp.img 8192
 	mcopy -s -i grub-esp.img grub-iso/EFI ::
 
 grub-memtest.iso: memtest.bin grub-eltorito.img ../grub/${GRUB_CFG}-legacy.cfg grub-esp.img
@@ -220,7 +223,8 @@ grub-memtest.iso: memtest.bin grub-eltorito.img ../grub/${GRUB_CFG}-legacy.cfg g
 	cp ../grub/${GRUB_CFG}-legacy.cfg grub-iso/boot/grub/grub.cfg
 	cp $(GRUB_FONT_DIR)/unicode.pf2 grub-iso/boot/grub/fonts/
 	cp $(GRUB_LIB_DIR)/i386-pc/*.mod grub-iso/boot/grub/i386-pc/
-	xorrisofs -pad -R -J -volid MT86PLUS_32 -graft-points -hide-rr-moved \
+	xorrisofs --set_all_file_dates "=$$SOURCE_DATE_EPOCH" -uid 1000 -gid 1000 \
+		  -pad -R -J -volid MT86PLUS_32 -graft-points -hide-rr-moved \
 		  --grub2-mbr $(GRUB_LIB_DIR)/i386-pc/boot_hybrid.img \
 		  -b /boot/eltorito.img -no-emul-boot -boot-load-size 4 -boot-info-table --grub2-boot-info \
 		  --efi-boot --interval:appended_partition_2:all:: \
diff --git a/build64/Makefile b/build64/Makefile
index 17f46a2..1cbe161 100644
--- a/build64/Makefile
+++ b/build64/Makefile
@@ -68,6 +68,8 @@ OBJS = boot/startup.o boot/efisetup.o $(SYS_OBJS) $(LIB_OBJS) $(TST_OBJS) $(APP_
 
 all: memtest.bin memtest.efi
 
+export TZ=UTC
+
 -include boot/efisetup.d
 -include $(subst .o,.d,$(SYS_OBJS))
 -include $(subst .o,.d,$(LIB_OBJS))
@@ -152,13 +154,14 @@ esp.img: memtest.efi
 	@mkdir -p iso/EFI/BOOT
 	cp memtest.efi iso/EFI/BOOT/bootx64.efi
 	@rm -f esp.img
-	/sbin/mkdosfs -n MEMTEST-ESP -F12 -C esp.img 4096
+	/sbin/mkdosfs -i 12345678 --invariant -n MEMTEST-ESP -F12 -C esp.img 4096
 	mcopy -s -i esp.img iso/EFI ::
 
 memtest.iso: memtest.mbr floppy.img esp.img
 	@mkdir -p iso/boot
 	cp floppy.img iso/boot/floppy.img
-	xorrisofs -pad -R -J -volid MT86PLUS_64 -graft-points -hide-rr-moved --grub2-mbr memtest.mbr \
+	xorrisofs --set_all_file_dates "=$$SOURCE_DATE_EPOCH" -uid 1000 -gid 1000 \
+                  -pad -R -J -volid MT86PLUS_64 -graft-points -hide-rr-moved --grub2-mbr memtest.mbr \
 		  -b /boot/floppy.img --efi-boot --interval:appended_partition_2:all:: \
 		  -part_like_isohybrid -iso_mbr_part_type 0x00 -append_partition 2 0xef ./esp.img \
 		  -o ./memtest.iso /boot=./iso/boot /EFI=./iso/EFI
@@ -209,7 +212,7 @@ grub-esp.img: memtest.efi grub-bootx64.efi ../grub/${GRUB_CFG}-efi.cfg
 	cp $(GRUB_FONT_DIR)/unicode.pf2 grub-iso/EFI/BOOT/grub/fonts/
 	cp $(GRUB_LIB_DIR)/x86_64-efi/*.mod grub-iso/EFI/BOOT/grub/x86_64-efi/
 	@rm -f grub-esp.img
-	/sbin/mkdosfs -n MT86P_ESP -F12 -C grub-esp.img 8192
+	/sbin/mkdosfs -i 12345678 --invariant -n MT86P_ESP -F12 -C grub-esp.img 8192
 	mcopy -s -i grub-esp.img grub-iso/EFI ::
 
 grub-memtest.iso: memtest.bin grub-eltorito.img ../grub/${GRUB_CFG}-legacy.cfg grub-esp.img
@@ -219,7 +222,8 @@ grub-memtest.iso: memtest.bin grub-eltorito.img ../grub/${GRUB_CFG}-legacy.cfg g
 	cp ../grub/${GRUB_CFG}-legacy.cfg grub-iso/boot/grub/grub.cfg
 	cp $(GRUB_FONT_DIR)/unicode.pf2 grub-iso/boot/grub/fonts/
 	cp $(GRUB_LIB_DIR)/i386-pc/*.mod grub-iso/boot/grub/i386-pc/
-	xorrisofs -pad -R -J -volid MT86PLUS_64 -graft-points -hide-rr-moved \
+	xorrisofs --set_all_file_dates "=$$SOURCE_DATE_EPOCH" -uid 1000 -gid 1000 \
+		  -pad -R -J -volid MT86PLUS_64 -graft-points -hide-rr-moved \
 		  --grub2-mbr $(GRUB_LIB_DIR)/i386-pc/boot_hybrid.img \
 		  -b /boot/eltorito.img -no-emul-boot -boot-load-size 4 -boot-info-table --grub2-boot-info \
 		  --efi-boot --interval:appended_partition_2:all:: \

base-commit: d3bc8fa7c2a2400d9c4d58cee00168d39fa9d716
-- 
2.38.0

