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#!/bin/sh
set -e
die() {
echo "die: $*"
exit 1
}
if [ "$(id -u)" != 0 ]; then
exec sudo -E -- "$0" "$@" || die "this script needs to run as root"
fi
if [ "$(uname -s)" = "Darwin" ]; then
export PATH="/usr/local/opt/e2fsprogs/bin:$PATH"
export PATH="/usr/local/opt/e2fsprogs/sbin:$PATH"
fi
echo "setting up disk image..."
qemu-img create _disk_image "${DISK_SIZE:-600}"m || die "could not create disk image"
chown "$SUDO_UID":"$SUDO_GID" _disk_image || die "could not adjust permissions on disk image"
echo "done"
printf "creating new filesystem... "
if [ "$(uname -s)" = "OpenBSD" ]; then
VND=$(vnconfig _disk_image)
(echo "e 0"; echo 83; echo n; echo 0; echo "*"; echo "quit") | fdisk -e "$VND"
mkfs.ext2 -I 128 -F "/dev/${VND}i" || die "could not create filesystem"
elif [ "$(uname -s)" = "FreeBSD" ]; then
MD=$(mdconfig _disk_image)
mke2fs -q -I 128 _disk_image || die "could not create filesystem"
else
if [ -x /sbin/mke2fs ]; then
/sbin/mke2fs -q -I 128 _disk_image || die "could not create filesystem"
else
mke2fs -q -I 128 _disk_image || die "could not create filesystem"
fi
fi
echo "done"
printf "mounting filesystem... "
mkdir -p mnt
use_genext2fs=0
if [ "$(uname -s)" = "Darwin" ]; then
fuse-ext2 _disk_image mnt -o rw+,allow_other,uid=501,gid=20 || die "could not mount filesystem"
elif [ "$(uname -s)" = "OpenBSD" ]; then
mount -t ext2fs "/dev/${VND}i" mnt/ || die "could not mount filesystem"
elif [ "$(uname -s)" = "FreeBSD" ]; then
fuse-ext2 -o rw+ "/dev/${MD}" mnt/ || die "could not mount filesystem"
else
if ! mount _disk_image mnt/ ; then
if command -v genext2fs 1>/dev/null ; then
echo "mount failed but genext2fs exists, use it instead"
use_genext2fs=1
else
die "could not mount filesystem and genext2fs is missing"
fi
fi
fi
echo "done"
cleanup() {
if [ -d mnt ]; then
if [ $use_genext2fs = 0 ] ; then
printf "unmounting filesystem... "
umount mnt || ( sleep 1 && sync && umount mnt )
rmdir mnt
else
rm -rf mnt
fi
if [ "$(uname -s)" = "OpenBSD" ]; then
vnconfig -u "$VND"
elif [ "$(uname -s)" = "FreeBSD" ]; then
mdconfig -d -u "$MD"
fi
echo "done"
fi
}
trap cleanup EXIT
script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
"$script_path/build-root-filesystem.sh"
if [ $use_genext2fs = 1 ]; then
# regenerate new image, since genext2fs is unable to reuse the previously written image.
# genext2fs is very slow in generating big images, so I use a smaller image here. size can be updated
# if it's not enough.
# not using "-i 128" since it hangs. Serenity handles whatever default this uses instead.
genext2fs -b 250000 -d mnt _disk_image || die "try increasing image size (genext2fs -b)"
# if using docker with shared mount, file is created as root, so make it writable for users
chmod 0666 _disk_image
fi
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