add boot params archisoflags= and cow_flags= for mount options

Having files on btrfs subvolumes requires to give mount options. Add
boot params archisoflags= and cow_flags= for this purpose. Boot
parameters could look like this:

... archisodevice=/dev/sdaX archisoflags=subvolume=isos
cow_device=/dev/sdaX cow_flags=subvolume=persist ...

Signed-off-by: Christian Hesse <mail@eworm.de>

1 files changed, 4 insertions, 2 deletions

diff --git a/hooks/archiso b/hooks/archiso
index 3edc76c..b4c0b43 100644
--- a/hooks/archiso
+++ b/hooks/archiso
@@ -110,6 +110,7 @@ run_hook() {
     [[ -z "${archisobasedir}" ]] && archisobasedir="arch"
     [[ -z "${dm_snap_prefix}" ]] && dm_snap_prefix="arch"
     [[ -z "${archisodevice}" ]] && archisodevice="/dev/disk/by-label/${archisolabel}"
+    [[ -z "${archisoflags}" ]] && archisoflags="defaults"
     [[ -z "${cow_spacesize}" ]] && cow_spacesize="256M"
 
     if [[ -n "${cow_label}" ]]; then
@@ -121,6 +122,7 @@ run_hook() {
         cow_persistent="N"
     fi
 
+    [[ -z "${cow_flags}" ]] && cow_flags="defaults"
     [[ -z "${cow_directory}" ]] && cow_directory="persistent_${archisolabel}/${arch}"
     [[ -z "${cow_chunksize}" ]] && cow_chunksize="8"
 
@@ -135,7 +137,7 @@ archiso_mount_handler() {
     local newroot="${1}"
 
     if ! mountpoint -q "/run/archiso/bootmnt"; then
-        _mnt_dev "${archisodevice}" "/run/archiso/bootmnt" "-r"
+        _mnt_dev -o "${archisoflags}" "${archisodevice}" "/run/archiso/bootmnt" "-r"
         if [[ "${copytoram}" != "y" ]]; then
             echo $(readlink -f ${archisodevice}) >> /run/archiso/used_block_devices
         fi
@@ -164,7 +166,7 @@ archiso_mount_handler() {
     fi
 
     if [[ -n "${cow_device}" ]]; then
-        _mnt_dev "${cow_device}" "/run/archiso/cowspace" "-r"
+        _mnt_dev -o "${cow_flags}" "${cow_device}" "/run/archiso/cowspace" "-r"
         echo $(readlink -f ${cow_device}) >> /run/archiso/used_block_devices
         mount -o remount,rw "/run/archiso/cowspace"
     else