From a92633a10c92eb014c1beb149205354d9cd04424 Mon Sep 17 00:00:00 2001
From: Tobias Powalowski <tpowa@archlinux.org>
Date: Wed, 17 Jul 2024 07:03:18 +0200
Subject: [PATCH] add comment about cpio creation

---
 usr/lib/archboot/cpio/cpio.sh | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/usr/lib/archboot/cpio/cpio.sh b/usr/lib/archboot/cpio/cpio.sh
index 088f9fec3..92abb5fd7 100644
--- a/usr/lib/archboot/cpio/cpio.sh
+++ b/usr/lib/archboot/cpio/cpio.sh
@@ -246,9 +246,17 @@ _install_libs() {
 }
 
 _create_cpio() {
+    # Reproducibility:
+    # set all timestamps to 0
+    # fd . -u --min-depth 1 -X touch -hcd "@0"
+    # Pipe needed as is, bsdcpio is not reproducible!
+    # cpio, pax, tar are slower than bsdtar!
+    # LC_ALL=C.UTF-8 bsdtar --null -cnf - -T - |
+    # LC_ALL=C.UTF-8 bsdtar --null -cf - --format=newc @-
+    # Result:
+    # Multi CPIO archive, extractable with 3cpio
     pushd "${_ROOTFS}" >"${_NO_LOG}" || return
     echo "Creating initramfs:"
-    # Reproducibility: set all timestamps to 0
     fd . -u --min-depth 1 -X touch -hcd "@0"
     echo "Appending directories..."
     fd . -u -t d -0 | sort -z |
@@ -258,6 +266,7 @@ _create_cpio() {
     fd . -t f -t l -u -e 'bz2' -e 'gz' -e 'xz' -e 'zst' --min-depth 1 -0 | sort -z |
         LC_ALL=C.UTF-8 bsdtar --null -cnf - -T - |
         LC_ALL=C.UTF-8 bsdtar --null -cf - --format=newc @- >> "${_GENERATE_IMAGE}" || _abort "Image creation failed!"
+    echo "Removing compressed files..."
     fd . -u -e 'bz2' -e 'gz' -e 'xz' -e 'zst' --min-depth 1 -X rm
     fd . -u --min-depth 1 -X touch -hcd "@0"
     echo "Appending zstd compressed image..."