postmarketos-mkinitfs-hook-netboot: new aport (MR 2222)

Co-authored-by: Luca Weiss <luca@z3ntu.xyz>

.ci/shellcheck.sh

@@ -21,6 +21,7 @@ sh_files="
 	./main/postmarketos-mkinitfs/init.sh
 	./main/postmarketos-mkinitfs/init_functions.sh
 	./main/postmarketos-mkinitfs-hook-debug-shell/20-debug-shell.sh
+	./main/postmarketos-mkinitfs-hook-netboot/netboot.sh
 	./main/postmarketos-update-kernel/update-kernel.sh
 	./main/swclock-offset/swclock-offset-boot.sh
 	./main/swclock-offset/swclock-offset-shutdown.sh

main/postmarketos-mkinitfs-hook-netboot/APKBUILD

@@ -0,0 +1,26 @@
+# Maintainer: Mark <clashclanacc2602@gmail.com>
+pkgname=postmarketos-mkinitfs-hook-netboot
+pkgver=1
+pkgrel=0
+pkgdesc="Netboot postmarketOS using nbd feature"
+url="https://postmarketos.org"
+depends="postmarketos-mkinitfs"
+source="
+	netboot.sh
+	netboot.modules
+	"
+arch="noarch"
+license="GPL-2.0-or-later"
+options="!check" # No tests
+
+package() {
+	install -Dm644 "$srcdir"/netboot.sh \
+		"$pkgdir"/etc/postmarketos-mkinitfs/hooks/netboot.sh
+	install -Dm644 "$srcdir"/netboot.modules \
+		"$pkgdir"/etc/postmarketos-mkinitfs/modules/30-netboot.modules
+}
+
+sha512sums="
+9f302b5fb13966d1e6bd9445fe0cf12a2e4fc7e0db50837f3b772628d46df6bec70da00dec3c4ce6b33075e1f906c02f5b796ac521c609b082d2fe9a523fb6cb  netboot.sh
+3c9c812a6cd25640e6cf4d722cff6c6356d5666ec6009b4c65f89e62211cc406d2cd09e0fdda6b1c1906ee32c3854988ab701cee8811208e3ef666f09e638568  netboot.modules
+"

main/postmarketos-mkinitfs-hook-netboot/netboot.modules

@@ -0,0 +1 @@
+nbd

main/postmarketos-mkinitfs-hook-netboot/netboot.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+# shellcheck disable=SC1091
+. /etc/deviceinfo
+. ./init_functions.sh
+NBD_PORT=9999
+NBD_IP=172.16.42.2
+
+setup_usb_network
+start_unudhcpd
+
+show_splash /splash-netboot-waiting.ppm.gz
+
+# Attempt to load the kernel module if CONFIG_BLK_DEV_NBD=m
+modprobe nbd
+
+# Check that we actually have nbd0 available, otherwise show an error screen.
+if [ ! -b /dev/nbd0 ]; then
+	echo "Failed to get /dev/nbd0, stopping."
+	show_splash /splash-netboot-error.ppm.gz
+	pmos_loop_forever
+fi
+
+while ! busybox nbd-client $NBD_IP $NBD_PORT /dev/nbd0 -b 512; do
+	echo "Connection attempt not successful, continuing..."
+	sleep 1
+done
+
+echo "Connected to $NBD_IP!"
+
+mount_subpartitions