154 lines
4.3 KiB
Bash
154 lines
4.3 KiB
Bash
# args: source, mountpoint
|
|
_mnt_aufs() {
|
|
src="${1}"
|
|
mnt="${2}"
|
|
msg "::: Adding new aufs branch: ${src} to ${mnt}"
|
|
mkdir -p "${mnt}"
|
|
/bin/mount -t aufs -o remount,append:"${src}"=ro none "${mnt}"
|
|
}
|
|
|
|
# args: source, mountpoint
|
|
_mnt_bind() {
|
|
src="${1}"
|
|
mnt="${2}"
|
|
msg "::: Binding ${src} to ${mnt}"
|
|
mkdir -p "${mnt}"
|
|
/bin/mount -o bind "${src}" "${mnt}"
|
|
}
|
|
|
|
# args: /path/to/image_file, mountpoint
|
|
_mnt_squashfs() {
|
|
img="${1}"
|
|
mnt="${2}"
|
|
img_fullname="${img##*/}";
|
|
img_name="${img_fullname%.*}"
|
|
tmp_mnt="/tmpfs/mnt/${img_name}"
|
|
|
|
if [ "${copytoram}" = "y" ]; then
|
|
msg -n ":: Copying squashfs image to RAM"
|
|
/bin/cp "${img}" "/tmpfs.sqfs/${img_fullname}"
|
|
img="/tmpfs.sqfs/${img_fullname}"
|
|
msg "done."
|
|
fi
|
|
|
|
mkdir -p "${tmp_mnt}"
|
|
/bin/mount -r -t squashfs "${img}" "${tmp_mnt}"
|
|
|
|
if [ "/${mnt#/*/}" = "/" ]; then
|
|
_mnt_aufs "${tmp_mnt}" "${mnt}"
|
|
else
|
|
_mnt_bind "${tmp_mnt}" "${mnt}"
|
|
fi
|
|
}
|
|
|
|
run_hook () {
|
|
if [ "x${arch}" = "x" ]; then
|
|
arch="$(uname -m)"
|
|
fi
|
|
|
|
if [ "x${tmpfs_size}" = "x" ]; then
|
|
tmpfs_size="75%"
|
|
fi
|
|
|
|
if [ "x${tmpfs_sqfs_size}" = "x" ]; then
|
|
tmpfs_sqfs_size="75%"
|
|
fi
|
|
|
|
if [ "x${isomounts}" != "x" ]; then
|
|
isomounts="/bootmnt/${isomounts}"
|
|
else
|
|
isomounts="/bootmnt/isomounts"
|
|
fi
|
|
|
|
if [ "x${archisodevice}" = "x" ]; then
|
|
archisodevice="/dev/archiso"
|
|
fi
|
|
|
|
# set mount handler for archiso
|
|
mount_handler="archiso_mount_handler"
|
|
}
|
|
|
|
archiso_mount_handler() {
|
|
newroot="${1}"
|
|
|
|
msg -n ":: Mounting tmpfs, size=${tmpfs_size}..."
|
|
mount -t tmpfs -o "size=${tmpfs_size}" tmpfs /tmpfs
|
|
msg "done."
|
|
|
|
if [ "${copytoram}" = "y" ]; then
|
|
msg -n ":: Mounting tmpfs (for squashfs), size=${tmpfs_sqfs_size}..."
|
|
mount -t tmpfs -o "size=${tmpfs_sqfs_size}" tmpfs /tmpfs.sqfs
|
|
msg "done."
|
|
fi
|
|
|
|
msg ":: Waiting for boot device..."
|
|
while ! poll_device ${archisodevice} 30; do
|
|
echo "ERROR: boot device didn't show up after 30 seconds..."
|
|
echo " Falling back to interactive prompt"
|
|
echo " You can try to fix the problem manually, log out when you are finished"
|
|
launch_interactive_shell
|
|
done
|
|
|
|
FSTYPE=$(blkid -o value -s TYPE -p ${archisodevice} 2> /dev/null)
|
|
if [ -n "${FSTYPE}" ]; then
|
|
if mount -r -t "${FSTYPE}" ${archisodevice} /bootmnt > /dev/null 2>&1; then
|
|
if [ -e "${isomounts}" ]; then
|
|
echo "SUCCESS: Mounted archiso volume successfully."
|
|
fserror="0"
|
|
else
|
|
echo "ERROR: Mounting was successful, but the ${isomounts} file does not exist."
|
|
fserror="1"
|
|
fi
|
|
else
|
|
echo "ERROR; Failed to mount ${archisodevice} (FS is ${FSTYPE})"
|
|
fserror="1"
|
|
fi
|
|
else
|
|
echo "ERROR: ${archisodevice} found, but the filesystem type is unknown."
|
|
fserror="1"
|
|
fi
|
|
|
|
if [ "${fserror}" = "1" ]; then
|
|
echo " Falling back to interactive prompt"
|
|
echo " You can try to fix the problem manually, log out when you are finished"
|
|
launch_interactive_shell
|
|
fi
|
|
|
|
msg ":: Mounting root (aufs) filesystem"
|
|
/bin/mount -t aufs -o dirs=/tmpfs=rw none "${newroot}"
|
|
if [ $? -ne 0 ]; then
|
|
echo "ERROR: while mounting root (aufs) filesystem."
|
|
exit 1
|
|
fi
|
|
|
|
msg ":: Mounting images"
|
|
while read img imgarch mountpoint type; do
|
|
# check if this line is a comment (starts with #)
|
|
[ "${img#"#"}" != "${img}" ] && continue
|
|
|
|
[ "$imgarch" != "$arch" ] && continue
|
|
|
|
[ ! -r "/bootmnt/${img}" ] && continue
|
|
|
|
if [ "${type}" = "bind" ]; then
|
|
_mnt_bind "/bootmnt/${img}" "${newroot}${mountpoint}"
|
|
elif [ "${type}" = "squashfs" ]; then
|
|
_mnt_squashfs "/bootmnt/${img}" "${newroot}${mountpoint}"
|
|
fi
|
|
done < "${isomounts}"
|
|
|
|
# Bind our bootmnt dir into the live system
|
|
_mnt_bind /bootmnt "${newroot}/bootmnt"
|
|
|
|
if [ "${copytoram}" != "y" ]; then
|
|
if [ "${FSTYPE}" = "iso9660" ] || [ "${FSTYPE}" = "udf" ]; then
|
|
if [ -d /proc/sys/dev/cdrom ]; then
|
|
echo 0 > /proc/sys/dev/cdrom/lock
|
|
echo 0 > /proc/sys/dev/cdrom/autoeject
|
|
fi
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# vim:ft=sh:ts=4:sw=4:et:
|