kbuild: append lines for extboot by default

Usually the configuration for extboot is just the same. For that, before
starting the editor for it, append the configuration that I'd most
likely be using. Then the editor session might just be deleting the old
lines and removing the warning comment.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 38 insertions, 2 deletions

diff --git a/bin/kbuild b/bin/kbuild
index ffbcee8..1c7ed11 100755
--- a/bin/kbuild
+++ b/bin/kbuild
@@ -147,6 +147,9 @@ cat <<SCRIPT >"$INSTALL_PATH/install.sh"
 
 set -ex
 
+##
+# Ensure you are root and dependencies are met.
+
 if [ "\$EUID" -ne 0 ];then
    echo "kbuild (error): run this as root."
    exit 1
@@ -157,6 +160,9 @@ if [ ! -f /sbin/update-initramfs ] && [ ! -f /usr/bin/dracut ]; then
    exit 1
 fi
 
+##
+# Copy files into filesystem and generate initramfs.
+
 cp -rv usr /
 cp -rv boot /
 
@@ -168,6 +174,31 @@ else
     update-initramfs -k $name -u
 fi
 
+##
+# Configure /boot/extlinux/extlinux.conf by providing a default
+
+cat <<EXT >>/boot/extlinux/extlinux.conf
+###
+### NOTE: generated by kbuild.
+###
+
+label l1
+	menu label Debian GNU/Linux bookworm/sid $name
+	linux /vmlinuz-$name
+	initrd /initrd.img-$name
+
+	fdtdir /dtbs/$name
+	append  root=/dev/nvme0n1p4 rw console=tty0 console=ttyS0,115200 earlycon rootwait stmmaceth=chain_mode:1 selinux=0
+
+label l1r
+	menu label Debian GNU/Linux bookworm/sid $name (rescue target)
+	linux /vmlinuz-$name
+	initrd /initrd.img-$name
+
+	fdtdir /dtbs/$name
+	append  root=/dev/nvme0n1p4 rw console=tty0 console=ttyS0,115200 earlycon rootwait stmmaceth=chain_mode:1 selinux=0 single
+EXT
+
 if [ -z "\$EDITOR" ]; then
    EDITOR=vi
 fi
@@ -191,8 +222,13 @@ if [ ! -f files.txt ]; then
 fi
 
 xargs rm -f < files.txt
-rmdir /boot/dtbs/$name
-rmdir /usr/lib/modules/$name
+rm -r /boot/dtbs/$name
+rm -r /usr/lib/modules/$name
+
+if [ -z "\$EDITOR" ]; then
+   EDITOR=vi
+fi
+\$EDITOR /boot/extlinux/extlinux.conf
 SCRIPT
 
 ##