From 5aea95129ecc7f36cfd04ed10b67bb4b3dde5c71 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Thu, 25 Jun 2026 22:43:47 +0300
Subject: [PATCH] BuildSystem: Allow building compressed initrd

Building with BANAN_INITRD=2 will now compress using gzip!
---
 README.md       | 2 +-
 script/image.sh | 9 ++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index bde65ecd..5627e116 100644
--- a/README.md
+++ b/README.md
@@ -118,7 +118,7 @@ To change the bootloader you can set environment variable BANAN\_BOOTLOADER; sup
 
 To run with UEFI set environment variable BANAN\_UEFI\_BOOT=1. You will also have to set OVMF\_PATH to the correct OVMF (default */usr/share/ovmf/x64/OVMF.fd*).
 
-To build an image with no physical root filesystem, but an initrd set environment variable BANAN\_INITRD=1. This can be used when testing on hardware with unsupported USB controller.
+To build an image with no physical root filesystem, but an initrd set environment variable BANAN\_INITRD=1. This can be used when testing on hardware with unsupported USB controller. If BANAN\_INITRD is set to a value larger than 1, initrd will be gzip compressed.
 
 If you have corrupted your disk image or want to create new one, you can either manually delete *build/banan-os.img* and build system will automatically create you a new one or you can run the following command.
 ```sh
diff --git a/script/image.sh b/script/image.sh
index c1443f39..e58b2e3f 100755
--- a/script/image.sh
+++ b/script/image.sh
@@ -39,11 +39,14 @@ fi
 
 if sudo mount "$ROOT_PARTITION" "$MOUNT_DIR"; then
 	if (($BANAN_INITRD)); then
-		fakeroot -i "$BANAN_FAKEROOT" tar -C "$BANAN_SYSROOT" -cf "$BANAN_SYSROOT.initrd" .
+		INITRD_FILE="$BANAN_BUILD_DIR/banan-os.initrd"
+		(($BANAN_INITRD > 1)) && COMPRESS_FLAGS='-z' || COMPRESS_FLAGS=''
+
+		fakeroot -i "$BANAN_FAKEROOT" tar -C "$BANAN_SYSROOT" --exclude='./boot' $COMPRESS_FLAGS -cf "$INITRD_FILE" .
 
 		sudo mkdir -p "$MOUNT_DIR/boot"
-		sudo cp "$BANAN_BUILD_DIR/kernel/banan-os.kernel" "$MOUNT_DIR/boot/banan-os.kernel"
-		sudo mv "$BANAN_SYSROOT.initrd" "$MOUNT_DIR/boot/banan-os.initrd"
+		sudo strip -o "$MOUNT_DIR/boot/banan-os.kernel" --strip-unneeded "$BANAN_BUILD_DIR/kernel/banan-os.kernel"
+		sudo cp "$INITRD_FILE" "$MOUNT_DIR/boot/banan-os.initrd"
 	else
 		sudo rsync -rulHpt "$BANAN_SYSROOT/" "$MOUNT_DIR"