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From 052d24d8217c51c572c2f6cbb4a687be2e8ba52d Mon Sep 17 00:00:00 2001
From: Brice Waegeneire <brice@waegenei.re>
Date: Fri, 5 Jun 2020 14:38:43 +0200
Subject: [PATCH] [geniso] Make it reproducible
Some timestamps get embedded in the generated ISO, making it
unreproducible so we overwrite those timestamps to be at the UNIX epoch.
---
src/util/geniso | 24 +++++++++++++++++++++---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/src/util/geniso b/src/util/geniso
index ff090d4a..e032ffb0 100755
--- a/src/util/geniso
+++ b/src/util/geniso
@@ -11,6 +11,13 @@ function help() {
echo " -o FILE save iso image to file"
}
+function reset_timestamp() {
+ for f in "$1"/*; do
+ touch -t 197001010100 "$f"
+ done
+ touch -t 197001010100 "$1"
+}
+
LEGACY=0
FIRST=""
@@ -37,8 +44,9 @@ if [ -z "${OUT}" ]; then
exit 1
fi
-# There should either be mkisofs or the compatible genisoimage program
-for command in genisoimage mkisofs; do
+# There should either be mkisofs, xorriso or the compatible genisoimage
+# program
+for command in xorriso genisoimage mkisofs; do
if ${command} --version >/dev/null 2>/dev/null; then
mkisofs=(${command})
break
@@ -46,8 +54,10 @@ for command in genisoimage mkisofs; do
done
if [ -z "${mkisofs}" ]; then
- echo "${0}: mkisofs or genisoimage not found, please install or set PATH" >&2
+ echo "${0}: mkisofs, xorriso or genisoimage not found, please install or set PATH" >&2
exit 1
+elif [ "$mkisofs" = "xorriso" ]; then
+ mkisofs+=(-as mkisofs)
fi
dir=$(mktemp -d bin/iso.dir.XXXXXX)
@@ -115,6 +125,8 @@ case "${LEGACY}" in
exit 1
fi
+ reset_timestamp "$dir"
+
# generate the iso image
"${mkisofs[@]}" -b boot.img -output ${OUT} ${dir}
;;
@@ -127,6 +139,12 @@ case "${LEGACY}" in
cp ${LDLINUX_C32} ${dir}
fi
+ reset_timestamp "$dir"
+
+ if [ "${mkisofs[0]}" = "xorriso" ]; then
+ mkisofs+=(-isohybrid-mbr "$SYSLINUX_MBR_DISK_PATH")
+ fi
+
# generate the iso image
"${mkisofs[@]}" -b isolinux.bin -no-emul-boot -boot-load-size 4 -boot-info-table -output ${OUT} ${dir}
--
2.26.2
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