Add accurate --hostonly checking for 95iscsi

modules.d/95iscsi/check

@@ -1,11 +1,35 @@
-#!/bin/sh
+#!/bin/bash
 # We depend on network modules being loaded
 [ "$1" = "-d" ] && echo network
 
-# If hostonly was requested, fail the check if we are not actually
-# booting from root.
-#[ "$1" = "-h" ] && ! egrep -q '/ /dev/nbd[0-9]*' /proc/mounts && exit 1
-
 # If our prerequisites are not met, fail anyways.
 which iscsistart hostname iscsi-iname >/dev/null 2>&1 || exit 1
+
+# If hostonly was requested, fail the check if we are not actually
+# booting from root.
+
+. $dracutfunctions
+
+[[ $debug ]] && set -x
+
+is_iscsi() ( 
+    [[ -L /sys/dev/block/$1 ]] || return
+    cd "$(readlink -f /sys/dev/block/$1)"
+    until [[ -d sys || -d iscsi_session ]]; do
+	cd ..
+    done
+    [[ -d iscsi_session ]]
+)
+
+case $1 in
+    -h) rootdev=$(find_root_block_device)
+	if [[ $rootdev ]]; then
+	    # root lives on a block device, so we can be more precise about 
+	    # hostonly checking
+	    check_block_and_slaves is_iscsi "$rootdev" || exit 1
+	else
+	    exit 1
+	fi ;;
+esac
+
 exit 0