cs/device

sh/cryptsetup.sh

@@ -29,7 +29,19 @@ rwx_crypt() {
 				case "${action}" in
 				"${action_open}")
 					rwx_log_info "OPEN"
-					# TODO find next available device
+					local nbd_device nbd_size
+					local nbd_index=0
+					while [ -z "${nbd_device}" ]; do
+						if [ -f "/dev/nbd${nbd_index}" ]; then
+							nbd_size="$(cat /sys/block/nbd"${nbd_index}/size")"
+							[ "${nbd_size}" -eq 0 ] &&
+								nbd_device="/dev/nbd${nbd_index}"
+						fi
+						nbd_index=$((nbd_index + 1))
+					done
+					[ -z "${nbd_device}" ] &&
+						rwx_log_error 4 "No device available"
+					rwx_log_info "device: ${nbd_device}"
 					# TODO connect device
 					# TODO open device
 					echo "${pass_phrase}"