4 files changed, 203 insertions, 0 deletions
diff --git a/modules.d/95zfcp/module-setup.sh b/modules.d/95zfcp/module-setup.sh
new file mode 100755
index 0000000..e1f3aa3
--- /dev/null
+++ b/modules.d/95zfcp/module-setup.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# called by dracut
+check() {
+    arch=${DRACUT_ARCH:-$(uname -m)}
+    [ "$arch" = "s390" -o "$arch" = "s390x" ] || return 1
+
+    require_binaries zfcp_cio_free grep sed seq || return 1
+
+    return 0
+}
+
+# called by dracut
+depends() {
+    return 0
+}
+
+# called by dracut
+installkernel() {
+    instmods zfcp
+}
+
+# called by dracut
+install() {
+    inst_hook cmdline 30 "$moddir/parse-zfcp.sh"
+    inst_multiple zfcp_cio_free grep sed seq
+
+    inst_script /sbin/zfcpconf.sh
+    inst_rules 56-zfcp.rules
+
+    if [[ $hostonly ]]; then
+        inst_simple -H /etc/zfcp.conf
+    fi
+}
diff --git a/modules.d/95zfcp/parse-zfcp.sh b/modules.d/95zfcp/parse-zfcp.sh
new file mode 100755
index 0000000..495aa67
--- /dev/null
+++ b/modules.d/95zfcp/parse-zfcp.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+getargbool 1 rd.zfcp.conf -d -n rd_NO_ZFCPCONF || rm /etc/zfcp.conf
+
+for zfcp_arg in $(getargs rd.zfcp -d 'rd_ZFCP='); do
+    echo "$zfcp_arg" | grep '^0\.[0-9a-fA-F]\.[0-9a-fA-F]\{4\}\(,0x[0-9a-fA-F]\{16\},0x[0-9a-fA-F]\{16\}\)\?$' > /dev/null
+    test $? -ne 0 && die "For argument 'rd.zfcp=$zfcp_arg'\nSorry, invalid format."
+    (
+        IFS=","
+        # shellcheck disable=SC2086
+        set $zfcp_arg
+        echo "$@" >> /etc/zfcp.conf
+    )
+done
+
+zfcp_cio_free
diff --git a/modules.d/95zfcp_rules/module-setup.sh b/modules.d/95zfcp_rules/module-setup.sh
new file mode 100755
index 0000000..dfa7951
--- /dev/null
+++ b/modules.d/95zfcp_rules/module-setup.sh
@@ -0,0 +1,80 @@
+#!/bin/bash
+
+# called by dracut
+cmdline() {
+    is_zfcp() {
+        local _dev=$1
+        local _devpath
+        _devpath=$(
+            cd -P /sys/dev/block/"$_dev" || exit
+            echo "$PWD"
+        )
+        local _sdev _scsiid _hostno _lun _wwpn _ccw _port_type
+        local _allow_lun_scan _is_npiv
+
+        read -r _allow_lun_scan < /sys/module/zfcp/parameters/allow_lun_scan
+        [ "${_devpath#*/sd}" == "$_devpath" ] && return 1
+        _sdev="${_devpath%%/block/*}"
+        [ -e "${_sdev}"/fcp_lun ] || return 1
+        _scsiid="${_sdev##*/}"
+        _hostno="${_scsiid%%:*}"
+        [ -d /sys/class/fc_host/host"${_hostno}" ] || return 1
+        read -r _port_type < /sys/class/fc_host/host"${_hostno}"/port_type
+        case "$_port_type" in
+            NPIV*)
+                _is_npiv=1
+                ;;
+        esac
+        read -r _ccw < "${_sdev}"/hba_id
+        if [ "$_is_npiv" ] && [ "$_allow_lun_scan" = "Y" ]; then
+            echo "rd.zfcp=${_ccw}"
+        else
+            read -r _lun < "${_sdev}"/fcp_lun
+            read -r _wwpn < "${_sdev}"/wwpn
+            echo "rd.zfcp=${_ccw},${_wwpn},${_lun}"
+        fi
+        return 0
+    }
+    [[ $hostonly ]] || [[ $mount_needs ]] && {
+        for_each_host_dev_and_slaves_all is_zfcp
+    } | sort | uniq
+}
+
+# called by dracut
+check() {
+    local _arch=${DRACUT_ARCH:-$(uname -m)}
+    local _ccw
+    [ "$_arch" = "s390" -o "$_arch" = "s390x" ] || return 1
+
+    [[ $hostonly ]] || [[ $mount_needs ]] && {
+        found=0
+        for _ccw in /sys/bus/ccw/devices/*/host*; do
+            [ -d "$_ccw" ] || continue
+            found=$((found + 1))
+        done
+        [ $found -eq 0 ] && return 255
+    }
+    return 0
+}
+
+# called by dracut
+depends() {
+    echo bash
+    return 0
+}
+
+# called by dracut
+install() {
+    inst_hook cmdline 30 "$moddir/parse-zfcp.sh"
+    if [[ $hostonly_cmdline == "yes" ]]; then
+        local _zfcp
+
+        for _zfcp in $(cmdline); do
+            printf "%s\n" "$_zfcp" >> "${initdir}/etc/cmdline.d/94zfcp.conf"
+        done
+    fi
+    if [[ $hostonly ]]; then
+        inst_rules_wildcard "51-zfcp-*.rules"
+        inst_rules_wildcard "41-zfcp-*.rules"
+    fi
+}
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