build-all

#!/bin/bash
CADMIUMROOT="$(dirname $(realpath $0))"

unset CC
unset CXX

set -e

"$CADMIUMROOT/check"

if [ -z "$DROPTO" ]; then
	if [ "$UID" != "0" ]; then
		mkdir -p "$CADMIUMROOT/tmp"
		exec sudo env DROPTO="$(whoami)" "$CADMIUMROOT/build-all" $@
	else
		echo "Running this script as root without setting DROPTO to your usual user is deprecated"
		echo "The ability to do so will be removed in future"
	fi
fi

function drop_perms() {
	setpriv --reuid="$DROPTO" --regid="$DROPTO" --init-groups --inh-caps=-all $@
}

source "$CADMIUMROOT/config"
source "$CADMIUMROOT/flavor/$FLAV"

[ "$DEBUG" = "true" ] && set -x

if [ -z "$1" ]; then
	echo "Usage:"
	echo "To build Cadmium onto a block device: build-all <device>"
	echo "To build Cadmium onto a file: build-all <file> <size>"
	exit 1
fi

if [ -z "$2" -a ! -b "$1" ]; then
	echo "$1 is not a block device"
	exit 1
fi

drop_perms git -C "$CADMIUMROOT" submodule update 2>/dev/null # FIXME: complains about missing files

# it deals with env vars, TODO: make it not
source "$CADMIUMROOT/loader/$LOADER/prepare_parts"

drop_perms "$CADMIUMROOT/kernel/build"

# TODO: move to loader/prepare_parts
case "$FILESYSTEM" in
	f2fs)
		mkfs.f2fs -f "$ROOTPART" -O extra_attr,inode_checksum,sb_checksum
	;;
	ext4)
		mkfs.ext4 -F "$ROOTPART"
		tune2fs -o discard "$ROOTPART"
	;;
esac

function umount_root() {
	umount "$CADMIUMROOT/tmp/root"
}

mkdir -p "$CADMIUMROOT/tmp/root"
mount "$ROOTPART" "$CADMIUMROOT/tmp/root"
trap umount_root EXIT

"$CADMIUMROOT/fs/build" "$CADMIUMROOT/tmp/root"

"$CADMIUMROOT/loader/$LOADER/install" "$DEVICE" "$ROOTPART"

# install modules
make -C "$CADMIUMROOT/tmp/linux-$ARCH" INSTALL_MOD_PATH="$CADMIUMROOT/tmp/root" modules_install

# yes, this fails when device is pendrive or sth
losetup -d "$DEVICE" 2>/dev/null || true

sync # just to be sure

echo "Done!"