path_id: add support for iSCSI devices

[elogind.git] / extras / path_id / path_id

diff --git a/extras/path_id/path_id b/extras/path_id/path_id
index 4941b88a452c73541dee747036013f94183e88f8..a6dfbf1a089dd644ea8e50923cf519b9f6463967 100644 (file)
--- a/extras/path_id/path_id
+++ b/extras/path_id/path_id
@@ -312,6 +312,61 @@ handle_sas () {
        RESULT=0
 }
 
+handle_iscsi() {
+       local DEV=$1
+       local iscsi_session_dir
+       local iscsi_session iscsi_session_path
+       local iscsi_connection iscsi_connection_path
+       # iSCSI device
+       iscsi_session_dir="${DEV%%/target*}"
+       iscsi_session="${iscsi_session_dir##*/}"
+       iscsi_session_path=/sys/class/iscsi_session/${iscsi_session}
+       if [ ! -d "$iscsi_session_path" ] ; then
+           : no iSCSI session path
+           RESULT=1
+           return
+       fi
+       # Currently we're not doing MC/S
+       for conn in ${iscsi_session_dir}/connection* ; do
+           iscsi_conn_num=${conn##*:}
+           if [ "$iscsi_conn_num" = '0' ] ; then
+               iscsi_connection=$(basename $conn)
+           fi
+       done
+       if [ -z "$iscsi_connection" ] ; then
+           : no iSCSI connection found
+           RESULT=1
+           return
+       fi
+       iscsi_connection_path=/sys/class/iscsi_connection/${iscsi_connection}
+       if [ ! -d "$iscsi_connection_path" ] ; then
+           : no iSCSI connection path
+           RESULT=1
+           return
+       fi
+       if [ -e "${iscsi_session_path}/targetname" ]; then
+           read iscsi_tgtname < ${iscsi_session_path}/targetname
+       fi
+       if [ -z "$iscsi_tgtname" ] ; then
+           : No iSCSI Targetname
+           RESULT=1
+           return
+       fi
+       if [ -e "${iscsi_connection_path}/persistent_address" ] ; then
+           read iscsi_address < ${iscsi_connection_path}/persistent_address
+       fi
+       if [ -z "$iscsi_address" ] ; then
+           : No iSCSI Target address
+           RESULT=1
+           return
+       fi
+       if [ -e "${iscsi_connection_path}/persistent_port" ] ; then
+           read iscsi_port < ${iscsi_connection_path}/persistent_port
+       fi
+       d="ip-${iscsi_address}:${iscsi_port}-iscsi-${iscsi_tgtname}"
+       RESULT=0
+}
+
 handle_usb () {
 : handle_usb $*
        local DEV=$1
@@ -413,6 +468,10 @@ handle_device () {
                        */fw-host[0-9]*/*)
                                handle_firewire "$D"
                                ;;
+                       */session[0-9]*/*)
+                               handle_iscsi "$D"
+                               D=
+                               ;;
                        */host[0-9]*/[0-9]*:[0-9]*:[0-9]*:[0-9]*)
                                handle_scsi "$D"
                                ;;