1 files changed, 97 insertions, 0 deletions
diff --git a/Meta/build-image-grub.sh b/Meta/build-image-grub.sh
new file mode 100755
index 0000000000..7efbb0649f
--- /dev/null
+++ b/Meta/build-image-grub.sh
@@ -0,0 +1,97 @@
+#!/bin/sh
+
+set -e
+
+die() {
+    echo "die: $*"
+    exit 1
+}
+
+if [ "$(id -u)" != 0 ]; then
+    die "this script needs to run as root"
+fi
+
+grub=$(command -v grub-install 2>/dev/null) || true
+if [ -z "$grub" ]; then
+    grub=$(command -v grub2-install 2>/dev/null) || true
+fi
+if [ -z "$grub" ]; then
+    echo "can't find a grub-install or grub2-install binary, oh no"
+    exit 1
+fi
+echo "using grub-install at ${grub}"
+
+echo "setting up disk image..."
+dd if=/dev/zero of=_disk_image bs=1M count="${DISK_SIZE:-800}" status=none || die "couldn't create disk image"
+chown "$SUDO_UID":"$SUDO_GID" _disk_image || die "couldn't adjust permissions on disk image"
+echo "done"
+
+printf "creating loopback device... "
+dev=$(losetup --find --partscan --show _disk_image)
+if [ -z "$dev" ]; then
+    die "couldn't mount loopback device"
+fi
+echo "loopback device is at ${dev}"
+
+cleanup() {
+    if [ -d mnt ]; then
+        printf "unmounting filesystem... "
+        umount mnt || ( sleep 1 && sync && umount mnt )
+        rmdir mnt
+        echo "done"
+    fi
+
+    if [ -e "${dev}" ]; then
+        printf "cleaning up loopback device... "
+        losetup -d "${dev}"
+        echo "done"
+    fi
+}
+trap cleanup EXIT
+
+printf "creating partition table... "
+if [ "$1" = "mbr" ]; then
+    parted -s "${dev}" mklabel msdos mkpart primary ext2 32k 100% -a minimal set 1 boot on || die "couldn't partition disk"
+    partition_number="p1"
+    partition_scheme="mbr"
+elif [ "$1" = "gpt" ]; then
+    parted -s "${dev}" mklabel gpt mkpart BIOSBOOT ext3 1MiB 8MiB mkpart OS ext2 8MiB 700MiB set 1 bios_grub || die "couldn't partition disk"
+    partition_number="p2"
+    partition_scheme="gpt"
+elif [ "$1" = "ebr" ]; then
+    parted -s "${dev}" mklabel msdos mkpart primary 32k 200MiB mkpart primary 200MiB 201MiB mkpart primary 201MiB 202MiB mkpart extended 250MiB 739MiB mkpart logical 372MiB 739MiB -a minimal set 1 boot on || die "couldn't partition disk"
+    partition_number="p5"
+    partition_scheme="ebr"
+else
+    parted -s "${dev}" mklabel msdos mkpart primary ext2 32k 100% -a minimal set 1 boot on || die "couldn't partition disk"
+    partition_number="p1"
+    partition_scheme="mbr"
+fi
+
+echo "done"
+
+printf "destroying old filesystem... "
+dd if=/dev/zero of="${dev}${partition_number}" bs=1M count=1 status=none || die "couldn't destroy old filesystem"
+echo "done"
+
+printf "creating new filesystem... "
+mke2fs -q -I 128 "${dev}${partition_number}" || die "couldn't create filesystem"
+echo "done"
+
+printf "mounting filesystem... "
+mkdir -p mnt
+mount "${dev}${partition_number}" mnt/ || die "couldn't mount filesystem"
+echo "done"
+
+script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
+"$script_path/build-root-filesystem.sh"
+
+echo "installing grub using $grub..."
+$grub --boot-directory=mnt/boot --target=i386-pc --modules="ext2 part_msdos" "${dev}"
+
+if [ -d mnt/boot/grub2 ]; then
+    cp grub-"${partition_scheme}".cfg mnt/boot/grub2/grub.cfg
+else
+    cp grub-"${partition_scheme}".cfg mnt/boot/grub/grub.cfg
+fi
+echo "done"