From 79a82cba76c0cdafc1724670217614fe332ab186 Mon Sep 17 00:00:00 2001
From: "Gerd v. Egidy" <gerd@egidy.de>
Date: Sat, 11 Mar 2023 22:18:44 +0100
Subject: [PATCH] add customization hooks to boot menus

Adds empty sysresccd_custom.cfg and /boot/grub/custom.cfg files that
are included from the regular boot menus (syslinux and grub). These
are intended for the user to customize.

Having dedicated files for this allows completely replacing the files.
This is easier than requiring careful patching with potential conflicts
with different versions of SystemRescue.
---
 build.sh                      | 1 +
 efiboot/grub/custom.cfg       | 5 +++++
 efiboot/grub/grubsrcd.cfg     | 2 ++
 syslinux/sysresccd_custom.cfg | 5 +++++
 syslinux/sysresccd_sys.cfg    | 2 ++
 5 files changed, 15 insertions(+)
 create mode 100644 efiboot/grub/custom.cfg
 create mode 100644 syslinux/sysresccd_custom.cfg

diff --git a/build.sh b/build.sh
index 3d4a6df..b210046 100755
--- a/build.sh
+++ b/build.sh
@@ -342,6 +342,7 @@ make_efi() {
          s|%INSTALL_DIR%|${install_dir}|g" \
          ${script_path}/efiboot/grub/grubsrcd.cfg > ${work_dir}/iso/boot/grub/grubsrcd.cfg
     cp ${script_path}/efiboot/grub/loopback.cfg ${work_dir}/iso/boot/grub/
+    cp ${script_path}/efiboot/grub/custom.cfg ${work_dir}/iso/boot/grub/
     cp -a /usr/share/edk2-shell/${edk2arch}/Shell_Full.efi ${work_dir}/iso/EFI/shell.efi
     cp ${work_dir}/${arch}/airootfs/boot/memtest86+/memtest.efi ${work_dir}/iso/EFI/memtest.efi
 }
diff --git a/efiboot/grub/custom.cfg b/efiboot/grub/custom.cfg
new file mode 100644
index 0000000..04c960e
--- /dev/null
+++ b/efiboot/grub/custom.cfg
@@ -0,0 +1,5 @@
+# This file is intended for customizing the boot menu of SystemRescue
+#
+# Either edit this file on a writable media 
+# or use https://www.system-rescue.org/scripts/sysrescue-customize/ to replace it
+
diff --git a/efiboot/grub/grubsrcd.cfg b/efiboot/grub/grubsrcd.cfg
index 9636241..9435c30 100644
--- a/efiboot/grub/grubsrcd.cfg
+++ b/efiboot/grub/grubsrcd.cfg
@@ -87,6 +87,8 @@ menuentry 'Stop during the boot process before mounting the root filesystem' {
 	initrd /%INSTALL_DIR%/boot/intel_ucode.img /%INSTALL_DIR%/boot/amd_ucode.img /%INSTALL_DIR%/boot/%ISO_ARCH%/sysresccd.img
 }
 
+source /boot/grub/custom.cfg
+
 menuentry 'Memtest86+ memory tester for UEFI' {
     insmod fat
 	set gfxpayload=800x600,1024x768
diff --git a/syslinux/sysresccd_custom.cfg b/syslinux/sysresccd_custom.cfg
new file mode 100644
index 0000000..04c960e
--- /dev/null
+++ b/syslinux/sysresccd_custom.cfg
@@ -0,0 +1,5 @@
+# This file is intended for customizing the boot menu of SystemRescue
+#
+# Either edit this file on a writable media 
+# or use https://www.system-rescue.org/scripts/sysrescue-customize/ to replace it
+
diff --git a/syslinux/sysresccd_sys.cfg b/syslinux/sysresccd_sys.cfg
index 9773291..146b9cc 100644
--- a/syslinux/sysresccd_sys.cfg
+++ b/syslinux/sysresccd_sys.cfg
@@ -73,4 +73,6 @@ LINUX boot/%ISO_ARCH%/vmlinuz
 INITRD boot/intel_ucode.img,boot/amd_ucode.img,boot/%ISO_ARCH%/sysresccd.img
 APPEND archisobasedir=%INSTALL_DIR% archisolabel=%ARCHISO_LABEL% %DEFAULT_KERNEL_PARAM% break
 
+INCLUDE boot/syslinux/sysresccd_custom.cfg
+
 INCLUDE boot/syslinux/sysresccd_tail.cfg