From bfa1db78cdcf6aaea09da560b578426fe663a05e Mon Sep 17 00:00:00 2001

From: Hannes Reinecke <hare@suse.de>

Date: Fri, 29 Nov 2013 13:13:47 +0100

Subject: [PATCH] Add DASD configuration for SuSE

On SuSE the DASD configuration is kept in udev rules, one rule

file per device. So add a new module for copying and creating

these rules during boot.

Signed-off-by: Hannes Reinecke <hare@suse.de>

---

 dracut-functions.sh                    | 28 +++++++++++++++++

 modules.d/95dasd_rules/module-setup.sh | 27 ++++++++++++++++

 modules.d/95dasd_rules/parse-dasd.sh   | 56 ++++++++++++++++++++++++++++++++++

 3 files changed, 111 insertions(+)

 create mode 100755 modules.d/95dasd_rules/module-setup.sh

 create mode 100755 modules.d/95dasd_rules/parse-dasd.sh

diff --git a/dracut-functions.sh b/dracut-functions.sh

index 04f4fea..7cfa097 100755

--- a/dracut-functions.sh

+++ b/dracut-functions.sh

@@ -899,6 +899,34 @@ inst_rules() {

     done

 }

+inst_rules_wildcard() {

+    local _target=/etc/udev/rules.d _rule _found

+

+    inst_dir "${udevdir}/rules.d"

+    inst_dir "$_target"

+    for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do

+        if [[ -e $_rule ]]; then

+            inst_rule_programs "$_rule"

+            inst_rule_group_owner "$_rule"

+            inst_rule_initqueue "$_rule"

+            inst_simple "$_rule"

+            _found=$_rule

+        fi

+    done

+    if [ -n ${hostonly} ] ; then

+        for _rule in ${_target}/$1 ; do

+            if [[ -f $_rule ]]; then

+                inst_rule_programs "$_rule"

+                inst_rule_group_owner "$_rule"

+                inst_rule_initqueue "$_rule"

+                inst_simple "$_rule"

+                _found=$_rule

+            fi

+        done

+    fi

+    [[ $_found ]] || dinfo "Skipping udev rule: $_rule"

+}

+

 prepare_udev_rules() {

     [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)

diff --git a/modules.d/95dasd_rules/module-setup.sh b/modules.d/95dasd_rules/module-setup.sh

new file mode 100755

index 0000000..d313171

--- /dev/null

+++ b/modules.d/95dasd_rules/module-setup.sh

@@ -0,0 +1,27 @@

+#!/bin/bash

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+

+# called by dracut

+check() {

+    local _arch=$(uname -m)

+    [ -x /sbin/dasd_configure ] || return 1

+    [ "$_arch" = "s390" -o "$_arch" = "s390x" ] || return 1

+    return 0

+}

+

+# called by dracut

+depends() {

+    echo 'dasd_mod'

+    return 0

+}

+

+# called by dracut

+install() {

+    inst_multiple /usr/lib/udev/collect

+    inst_hook cmdline 30 "$moddir/parse-dasd.sh"

+    if [[ $hostonly ]] ; then

+        inst_rules_wildcard 51-dasd-*.rules

+    fi

+    inst_rules 59-dasd.rules

+}

diff --git a/modules.d/95dasd_rules/parse-dasd.sh b/modules.d/95dasd_rules/parse-dasd.sh

new file mode 100755

index 0000000..9389c44

--- /dev/null

+++ b/modules.d/95dasd_rules/parse-dasd.sh

@@ -0,0 +1,56 @@

+#!/bin/sh

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+

+create_udev_rule() {

+    local ccw=$1

+    local _drv _cu_type _dev_type

+    local _rule=/etc/udev/rules.d/51-dasd-${ccw}.rules

+

+    if [ -e /sys/bus/ccw/devices/${ccw} ] ; then

+        read _cu_type < /sys/bus/ccw/devices/${ccw}/cutype

+        read _dev_type < /sys/bus/ccw/devices/${ccw}/devtype

+    fi

+    case "$_cu_type" in

+    3990/*|2105/*|2107/*|1750/*|9343/*)

+            _drv=dasd-eckd

+            ;;

+    6310/*)

+            _drv=dasd-fba

+            ;;

+    3880/*)

+        case "$_dev_type" in

+            3380/*)

+                _drv=dasd_eckd

+                ;;

+            3370/*)

+                _drv=dasd-fba

+                ;;

+        esac

+        ;;

+    esac

+    [ -z "${_drv}" ] && return 0

+

+    [ -e ${_rule} ] && return 0

+

+    cat > $_rule <

+ACTION=="add", SUBSYSTEM=="ccw", KERNEL=="$ccw", IMPORT{program}="collect $ccw %k ${ccw} $_drv"

+ACTION=="add", SUBSYSTEM=="drivers", KERNEL=="$_drv", IMPORT{program}="collect $ccw %k ${ccw} $_drv"

+ACTION=="add", ENV{COLLECT_$ccw}=="0", ATTR{[ccw/$ccw]online}="1"

+EOF

+}

+

+for dasd_arg in $(getargs root=) $(getargs resume=); do

+    (

+        case $dasd_arg in

+            /dev/disk/by-path/ccw-*)

+                ccw_arg=${dasd_arg##*/}

+                break;

+        esac

+        if [ -n "$ccw_arg" ] ; then

+            IFS="-"

+            set -- $ccw_arg

+            create_udev_rule $2

+        fi

+    )

+done