1 files changed, 73 insertions, 0 deletions
diff --git a/modules.d/95zfcp_rules/parse-zfcp.sh b/modules.d/95zfcp_rules/parse-zfcp.sh
new file mode 100755
index 0000000..5e7d909
--- /dev/null
+++ b/modules.d/95zfcp_rules/parse-zfcp.sh
@@ -0,0 +1,73 @@
+#!/bin/bash
+
+create_udev_rule() {
+    local ccw=$1
+    local wwpn=$2
+    local lun=$3
+    local _rule=/etc/udev/rules.d/51-zfcp-${ccw}.rules
+    local _cu_type _dev_type
+
+    if [ -x /sbin/cio_ignore ] && cio_ignore -i "$ccw" > /dev/null; then
+        cio_ignore -r "$ccw"
+    fi
+
+    if [ -e /sys/bus/ccw/devices/"${ccw}" ]; then
+        read -r _cu_type < /sys/bus/ccw/devices/"${ccw}"/cutype
+        read -r _dev_type < /sys/bus/ccw/devices/"${ccw}"/devtype
+    fi
+    if [ "$_cu_type" != "1731/03" ]; then
+        return 0
+    fi
+    if [ "$_dev_type" != "1732/03" ] && [ "$_dev_type" != "1732/04" ]; then
+        return 0
+    fi
+
+    [ -z "$wwpn" ] || [ -z "$lun" ] && return
+    m=$(sed -n "/.*${wwpn}.*${lun}.*/p" "$_rule")
+    if [ -z "$m" ]; then
+        cat >> "$_rule" << EOF
+ACTION=="add", KERNEL=="rport-*", ATTR{port_name}=="$wwpn", SUBSYSTEMS=="ccw", KERNELS=="$ccw", ATTR{[ccw/$ccw]$wwpn/unit_add}="$lun"
+EOF
+    fi
+}
+
+if [[ -f /sys/firmware/ipl/ipl_type ]] \
+    && [[ $(< /sys/firmware/ipl/ipl_type) == "fcp" ]]; then
+    (
+        read -r _wwpn < /sys/firmware/ipl/wwpn
+        read -r _lun < /sys/firmware/ipl/lun
+        read -r _ccw < /sys/firmware/ipl/device
+
+        create_udev_rule "$_ccw" "$_wwpn" "$_lun"
+    )
+fi
+
+for zfcp_arg in $(getargs rd.zfcp); do
+    (
+        OLDIFS="$IFS"
+        IFS=","
+        # shellcheck disable=SC2086
+        set $zfcp_arg
+        IFS="$OLDIFS"
+        create_udev_rule "$1" "$2" "$3"
+    )
+done
+
+for zfcp_arg in $(getargs root=) $(getargs resume=); do
+    (
+        case $zfcp_arg in
+            /dev/disk/by-path/ccw-*)
+                ccw_arg=${zfcp_arg##*/}
+                ;;
+        esac
+        if [ -n "$ccw_arg" ]; then
+            OLDIFS="$IFS"
+            IFS="-"
+            set -- "$ccw_arg"
+            IFS="$OLDIFS"
+            _wwpn=${4%:*}
+            _lun=${4#*:}
+            create_udev_rule "$2" "$wwpn" "$lun"
+        fi
+    )
+done