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8e24a17d0d
In the GNU coreutils version of chown, ":" is a valid argument (the command will result in a no-op), but POSIX chown does not consider that valid. If the user who ran build-image-*.sh was root, SUDO_UID and SUDO_GID would not be set and, if the version of chown installed on the system did not allow passing just a ":" as argument, the script would fail. Let's default the value of SUDO_UID and SUDO_GID to 0 just in case.
94 lines
3 KiB
Bash
Executable file
94 lines
3 KiB
Bash
Executable file
#!/bin/sh
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set -e
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die() {
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echo "die: $*"
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exit 1
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}
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if [ "$(id -u)" != 0 ]; then
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exec sudo -E -- "$0" "$@" || die "this script needs to run as root"
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else
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: "${SUDO_UID:=0}" "${SUDO_GID:=0}"
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fi
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if [ "$(uname -s)" = "Darwin" ]; then
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export PATH="/usr/local/opt/e2fsprogs/bin:$PATH"
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export PATH="/usr/local/opt/e2fsprogs/sbin:$PATH"
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fi
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echo "setting up disk image..."
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qemu-img create _disk_image "${DISK_SIZE:-600}"m || die "could not create disk image"
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chown "$SUDO_UID":"$SUDO_GID" _disk_image || die "could not adjust permissions on disk image"
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echo "done"
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printf "creating new filesystem... "
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if [ "$(uname -s)" = "OpenBSD" ]; then
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VND=$(vnconfig _disk_image)
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(echo "e 0"; echo 83; echo n; echo 0; echo "*"; echo "quit") | fdisk -e "$VND"
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mkfs.ext2 -I 128 -F "/dev/${VND}i" || die "could not create filesystem"
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elif [ "$(uname -s)" = "FreeBSD" ]; then
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MD=$(mdconfig _disk_image)
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mke2fs -q -I 128 _disk_image || die "could not create filesystem"
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else
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if [ -x /sbin/mke2fs ]; then
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/sbin/mke2fs -q -I 128 _disk_image || die "could not create filesystem"
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else
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mke2fs -q -I 128 _disk_image || die "could not create filesystem"
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fi
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fi
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echo "done"
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printf "mounting filesystem... "
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mkdir -p mnt
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use_genext2fs=0
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if [ "$(uname -s)" = "Darwin" ]; then
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fuse-ext2 _disk_image mnt -o rw+,allow_other,uid=501,gid=20 || die "could not mount filesystem"
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elif [ "$(uname -s)" = "OpenBSD" ]; then
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mount -t ext2fs "/dev/${VND}i" mnt/ || die "could not mount filesystem"
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elif [ "$(uname -s)" = "FreeBSD" ]; then
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fuse-ext2 -o rw+ "/dev/${MD}" mnt/ || die "could not mount filesystem"
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else
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if ! mount _disk_image mnt/ ; then
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if command -v genext2fs 1>/dev/null ; then
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echo "mount failed but genext2fs exists, use it instead"
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use_genext2fs=1
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else
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die "could not mount filesystem and genext2fs is missing"
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fi
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fi
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fi
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echo "done"
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cleanup() {
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if [ -d mnt ]; then
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if [ $use_genext2fs = 0 ] ; then
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printf "unmounting filesystem... "
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umount mnt || ( sleep 1 && sync && umount mnt )
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rmdir mnt
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else
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rm -rf mnt
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fi
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if [ "$(uname -s)" = "OpenBSD" ]; then
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vnconfig -u "$VND"
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elif [ "$(uname -s)" = "FreeBSD" ]; then
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mdconfig -d -u "$MD"
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fi
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echo "done"
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fi
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}
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trap cleanup EXIT
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script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
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"$script_path/build-root-filesystem.sh"
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if [ $use_genext2fs = 1 ]; then
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# regenerate new image, since genext2fs is unable to reuse the previously written image.
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# genext2fs is very slow in generating big images, so I use a smaller image here. size can be updated
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# if it's not enough.
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# not using "-i 128" since it hangs. Serenity handles whatever default this uses instead.
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genext2fs -b 250000 -d mnt _disk_image || die "try increasing image size (genext2fs -b)"
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# if using docker with shared mount, file is created as root, so make it writable for users
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chmod 0666 _disk_image
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fi
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