ladybird/Kernel/build-image-qemu.sh
Conrad Pankoff e1c982e4db Build: Remove grub from default build process
This removes grub and all the loopback device business from the default
build process. Running grub takes about a second, and it turns out it's
inconsistently packaged in different distributions, which has led to
at least one confusing issue so far (grub-install vs grub2-install).
Removing it from the basic path will make it easier for people to try
Serenity out.

There are now two scripts that can be used to build a disk image:

1. `build-image-grub.sh` - this will build an image suitable for writing
   to the IDE hard drive of a physical machine, complete with a partition
   table and bootloader. This can be run in qemu with the `qgrub` target
   for the `run` script.
2. `build-image-qemu.sh` - this is a simpler script which creates a bare
   filesystem image rather than a full MBR disk.

Both of these call out to `build-root-filesystem.sh` to do most of the
work setting up... the root filesystem.

For completeness' sake, I've retained the `sync.sh` script as a simple
forwarding to `build-image-qemu.sh`.

This relies on the functionality from #194 and #195. #195 allows us to
use `/dev/hda` as the root device when nothing else is specified, and #194
works around a strange feature of qemu that appends a space to the kernel
command line.
2019-06-04 07:15:44 -07:00

38 lines
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Bash
Executable file

#!/bin/bash
set -e
die() {
echo "die: $@"
exit 1
}
if [ $(id -u) != 0 ]; then
die "this script needs to run as root"
fi
echo "setting up disk image..."
qemu-img create _disk_image ${DISK_SIZE:-500}m || die "couldn't create disk image"
chown 1000:1000 _disk_image || die "couldn't adjust permissions on disk image"
echo "done"
echo -n "creating new filesystem... "
mke2fs -q -I 128 _disk_image || die "couldn't create filesystem"
echo "done"
echo -n "mounting filesystem... "
mkdir -p mnt
mount _disk_image mnt/ || die "couldn't mount filesystem"
echo "done"
cleanup() {
if [ -d mnt ]; then
echo -n "unmounting filesystem... "
umount mnt || ( sleep 1 && sync && umount mnt )
rm -rf mnt
echo "done"
fi
}
trap cleanup EXIT
./build-root-filesystem.sh