update-system

#!/bin/bash

# Return the package name of the kernel currently in use
# (for determining whether the package has been updated
# and therefore a reboot is needed)
kernel_package() {
	local USED_KERNEL=kernel
	if uname -r |grep -q rc; then
		USED_KERNEL=${USED_KERNEL}-rc
	fi
	if uname -r |grep -q server; then
		USED_KERNEL=${USED_KERNEL}-server
	else
		USED_KERNEL=${USED_KERNEL}-desktop
	fi
	if uname -r |grep -q gcc; then
		USED_KERNEL=${USED_KERNEL}-gcc
	fi
	# "custom" kernels have been built from the kernel-source
	# package -- let's not mess with them, they don't get updated
	# through package management
	if uname -r |grep -q custom; then
		USED_KERNEL=""
	fi
	# A kernel that doesn't have an OMV tag doesn't come from
	# our packages (likely an upstream kernel built from source),
	# so don't mess with that either
	if ! uname -r |grep -q omv; then
		USED_KERNEL=""
	fi
	echo $USED_KERNEL
}

if [ -e /etc/sysconfig/system-update ]; then
	. /etc/sysconfig/system-update
fi

if [ -z "$KERNEL_PACKAGE" -a "$NO_REBOOT_ON_KERNEL_UPDATE" != "1" ]; then
	KERNEL_PACKAGE="$(kernel_package)"
fi
if [ -n "$KERNEL_PACKAGE" ]; then
	OLD_KERNELS="$(rpm -q $KERNEL_PACKAGE |sort)"
fi

[ -z "$NO_ALLOWERASING" ] && ALLOWERASING=--allowerasing
[ "$NO_INSTALL" = "1" ] && DOWNLOADONLY=--downloadonly

dnf -y --refresh $DOWNLOADONLY distro-sync $ALLOWERASING

if [ -n "$KERNEL_PACKAGE" ]; then
	NEW_KERNELS="$(rpm -q $KERNEL_PACKAGE |sort)"
	if [ "$OLD_KERNELS" != "$NEW_KERNELS" ]; then
		echo "Rebooting because $KERNEL_PACKAGE has been updated"
		reboot
	fi
fi