1bbeeb0e5b
* squashfs images that will be part of read-only branchs for union mount in / are mounted on /ro_branch/{image_name} instead of /tmpfs/mnt/{image_name} (and avoid empty dirs on live env under /mnt) * tmpfs that will be part of read-write branch for union mount in / is mounted on /rw_branch instead of /tmpfs * tmpfs that is for store *.sqfs images when copytoram=y, is mounted on /copytoram instead of /tmpfs.sqfs * tmpfs_size= parameter renamed to rw_branch_size= * tmpfs_sqfs_size= parameter renamed to copytoram_size= Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
152 lines
4.3 KiB
Bash
152 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="/ro_branch/${img_name}"
|
|
|
|
if [ "${copytoram}" = "y" ]; then
|
|
msg -n ":: Copying squashfs image to RAM..."
|
|
/bin/cp "${img}" "/copytoram/${img_fullname}"
|
|
img="/copytoram/${img_fullname}"
|
|
msg "done."
|
|
fi
|
|
|
|
mkdir -p "${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="$(uname -m)"
|
|
fi
|
|
|
|
if [ "x${rw_branch_size}" = "x" ]; then
|
|
rw_branch_size="75%"
|
|
fi
|
|
|
|
if [ "x${copytoram_size}" = "x" ]; then
|
|
copytoram_size="75%"
|
|
fi
|
|
|
|
if [ "x${archisobasedir}" != "x" ]; then
|
|
archisobasedir=""
|
|
fi
|
|
|
|
if [ "x${isomounts}" != "x" ]; then
|
|
isomounts="/bootmnt/${isomounts}"
|
|
else
|
|
isomounts="/bootmnt/${archisobasedir}/isomounts"
|
|
fi
|
|
|
|
if [ "x${archisodevice}" = "x" ]; then
|
|
archisodevice="/dev/disk/by-label/${archisolabel}"
|
|
fi
|
|
|
|
# set mount handler for archiso
|
|
mount_handler="archiso_mount_handler"
|
|
}
|
|
|
|
archiso_mount_handler() {
|
|
newroot="${1}"
|
|
|
|
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
|
|
|
|
if [ "${copytoram}" = "y" ]; then
|
|
msg -n ":: Mounting /copytoram (tmpfs) filesystem, size=${copytoram_size}..."
|
|
mount -t tmpfs -o "size=${copytoram_size}",mode=0755 copytoram /copytoram
|
|
msg "done."
|
|
fi
|
|
|
|
msg -n ":: Mounting rw_branch (tmpfs) filesystem, size=${rw_branch_size}..."
|
|
mount -t tmpfs -o "size=${rw_branch_size}",mode=0755 rw_branch /rw_branch
|
|
msg "done."
|
|
|
|
msg ":: Mounting root (aufs) filesystem"
|
|
/bin/mount -t aufs -o dirs=/rw_branch=rw none "${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" != "$arch" ] && continue
|
|
|
|
[ ! -r "/bootmnt/${archisobasedir}/${img}" ] && continue
|
|
|
|
if [ "${type}" = "bind" ]; then
|
|
_mnt_bind "/bootmnt/${archisobasedir}/${img}" "${newroot}${mountpoint}"
|
|
elif [ "${type}" = "squashfs" ]; then
|
|
_mnt_squashfs "/bootmnt/${archisobasedir}/${img}" "${newroot}${mountpoint}"
|
|
fi
|
|
done < "${isomounts}"
|
|
|
|
if [ "${copytoram}" = "y" ]; then
|
|
/bin/umount /bootmnt
|
|
else
|
|
_mnt_bind /bootmnt "${newroot}/bootmnt"
|
|
fi
|
|
}
|
|
|
|
# vim:ft=sh:ts=4:sw=4:et:
|