File kdump-move-network-setup-to-module-setup.patch of Package kdump.624

From: Petr Tesarik <ptesarik@suse.cz>
Date: Tue Sep 23 11:02:22 2014 +0200
Subject: Move dracut network command line to module-setup.sh
References: bnc#885897
Patch-mainline: v0.8.16
Git-commit: 16e3640c2bcbb08fb31c7c3da03a8fb726d7686a

This is mostly a cleanup to allow adding more code to module-setup.sh
without too much duplication.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>

---
 init/mkdumprd              |   54 -------------------------------
 init/module-setup.sh       |   76 ++++++++++++++++++++++++++++++++++++++++++---
 init/setup-kdump.functions |   19 ++++++++++-
 3 files changed, 90 insertions(+), 59 deletions(-)

--- a/init/mkdumprd
+++ b/init/mkdumprd
@@ -120,8 +120,6 @@ function run_mkinitrd()
 # Create a new initrd using dracut                                           {{{
 function run_dracut()
 {
-    local modules="kdump"
-
     DRACUT_ARGS="--force --hostonly --omit 'plymouth resume usrmount'"
     DRACUT_ARGS="$DRACUT_ARGS --compress='xz -0 --check=crc32'"
 
@@ -136,60 +134,10 @@ function run_dracut()
 	i=$((i+1))
     done
 
-    # Check for additional modules
-    neednet=
-    for protocol in "${kdump_Protocol[@]}" ; do
-	if [ "$protocol" = "nfs" ]; then
-	    modules="$modules nfs"
-	fi
-	if [ "$protocol" = "cifs" -o "$protocol" = "smb" ]; then
-            modules="$modules cifs"
-	fi
-	if [ "$protocol" != "file" ]; then
-	    neednet=y
-	fi
-    done
-
-    # network configuration
-    if [ -n "$KDUMP_SMTP_SERVER" -a -n "$KDUMP_NOTIFICATION_TO" ]; then
-	neednet=y
-    fi
-    if [ "$KDUMP_NETCONFIG" = "auto" ] ; then
-	status_message "Network: auto"
-	if [ -n "$neednet" ]; then
-	    DRACUT_ARGS+=" --kernel-cmdline 'rd.neednet=1 ip=any'"
-	    modules="$modules network"
-	fi
-    elif [ -z "$KDUMP_NETCONFIG" ] ; then
-	status_message "Network: none"
-    else
-	interface=$(echo "$KDUMP_NETCONFIG" | cut -d ':' -f 1)
-	mode=$(echo "$KDUMP_NETCONFIG" | cut -d ':' -f 2)
-
-	if [ "$interface" = "default" ] ; then
-	    interface=$( kdump_default_netdev )
-	    status_message "Network interface: $interface (default)"
-	else
-	    status_message "Network interface: $interface"
-	fi
-
-	if [ "$mode" = "static" ] ; then
-	    ipcfg="$(kdump_ip_config "$interface")"
-	    hwaddr=$(cat "/sys/class/net/$interface/address")
-            status_message "Network mode: Static IP"
-            DRACUT_ARGS+=" --kernel-cmdline 'rd.neednet=1 ip=$ipcfg::$hwaddr'"
-	else
-            status_message "Network mode: Automatic IP (DHCP)"
-            DRACUT_ARGS+=" --kernel-cmdline 'rd.neednet=1 ip=${interface}:dhcp'"
-	fi
-	modules="$modules network"
-    fi
-
     # Make resolved variables visible to the dracut module
     kdump_export_targets
 
-    DRACUT_ARGS="$DRACUT_ARGS --add '$modules' $INITRD $KERNELVERSION"
-    status_message "Calling dracut $DRACUT_ARGS"
+    DRACUT_ARGS="$DRACUT_ARGS --add 'kdump' $INITRD $KERNELVERSION"
     echo "Regenerating kdump initrd ..." >&2
     eval "bash -$- dracut $DRACUT_ARGS"
 }                                                                          # }}}
--- a/init/module-setup.sh
+++ b/init/module-setup.sh
@@ -3,12 +3,51 @@
 
 . /lib/kdump/setup-kdump.functions
 
+kdump_check_net() {
+    kdump_neednet=
+    for protocol in "${kdump_Protocol[@]}" ; do
+	if [ "$protocol" != "file" ]; then
+	    kdump_neednet=y
+	fi
+    done
+
+    # network configuration
+    if [ -n "$KDUMP_SMTP_SERVER" -a -n "$KDUMP_NOTIFICATION_TO" ]; then
+	kdump_neednet=y
+    fi
+
+    # network explicitly disabled in configuration?
+    [ -z "$KDUMP_NETCONFIG" ] && kdump_neednet=
+}
+
 check() {
+    # Get configuration
+    kdump_import_targets || return 1
+    kdump_get_config || return 1
+    kdump_check_net
+
     return 255
 }
 
 depends() {
-    echo drm
+    local -A _modules
+
+    # drm is needed to get console output, but it is not included
+    # automatically, because kdump does not use plymouth
+    _modules[drm]=
+
+    [ "$kdump_neednet" = y ] && _modules[network]=
+
+    for protocol in "${kdump_Protocol[@]}" ; do
+	if [ "$protocol" = "nfs" ]; then
+	    _modules[nfs]=
+	fi
+	if [ "$protocol" = "cifs" -o "$protocol" = "smb" ]; then
+            _modules[cifs]=
+	fi
+    done
+
+    echo ${!_modules[@]}
 }
 
 kdump_add_mpath_dev() {
@@ -22,10 +61,39 @@ kdump_add_mpath_dev() {
     fi
 }
 
+kdump_cmdline_ip() {
+    [ "$kdump_neednet" = y ] || return 0
+
+    echo -n "rd.neednet=1"
+    if [ "$KDUMP_NETCONFIG" = "auto" ] ; then
+	echo -n " ip=any"
+    else
+	set -- ${KDUMP_NETCONFIG//:/ }
+	local _if=$1
+	local _mode=$2
+
+	if [ "$_if" = "default" ] ; then
+	    _if=$(kdump_default_netdev)
+	fi
+	printf " %s" $(kdump_ifname_config "$_if")
+
+	if [ "$_mode" = "static" ] ; then
+	    printf " %s" $(kdump_ip_config "$_if")
+	else
+	    echo -n " ip=${_if}:dhcp"
+	fi
+    fi
+}
+
+cmdline() {
+    kdump_cmdline_ip
+}
+
 install() {
-    # Get configuration
-    kdump_get_config || return 1
-    kdump_import_targets
+    if [[ $hostonly_cmdline == "yes" ]] ; then
+        local _cmdline=$(cmdline)
+        [ -n "$_cmdline" ] && printf "%s\n" "$_cmdline" >> "${initdir}/etc/cmdline.d/99kdump.conf"
+    fi
 
     # Get a list of required multipath devices
     local kdump_mpath_wwids
--- a/init/setup-kdump.functions
+++ b/init/setup-kdump.functions
@@ -193,6 +193,20 @@ function kdump_netdev_mode()						   # {
 }									   # }}}
 
 #
+# Get the ifname parameter for a given device
+#
+# Parameters:
+#   1) device  device name
+# Output:
+#   ifname corresponding ifname= initrd parameter (or empty)
+function kdump_ifname_config()						   # {{{
+{
+    local iface="$1"
+    local hwaddr=$(<"/sys/class/net/$iface/address")
+    [ -n "$hwaddr" ] && echo "ifname=$iface:$hwaddr"
+}									   # }}}
+
+#
 # Convert a CIDR prefix to IPv4 netmask
 #
 # Parameters:
@@ -219,7 +233,7 @@ kdump_prefix2netmask() {						   # {{{
 # Get the ip= parameter for a given device
 #
 # Parameters:
-#   1) device  device name (use default if empty)
+#   1) device  device name
 # Output:
 #   ip configuration string that can be used for the ip= initrd parameter
 function kdump_ip_config()						   # {{{
@@ -249,7 +263,7 @@ function kdump_ip_config()						   # {{{
     gwaddr=$(ip route show 0/0 | sed -n 's/.* via \([^ ]*\).*/\1/p')
     hostname=$(hostname)
 
-    echo "$ipaddr:$peeraddr:$gwaddr:$netmask:$hostname:$iface:none"
+    echo "ip=$ipaddr:$peeraddr:$gwaddr:$netmask:$hostname:$iface:none"
 }									   # }}}
 
 #
@@ -311,6 +325,7 @@ function kdump_import_targets()
     eval "kdump_Host=( $KDUMP_x_Host )"
     eval "kdump_Realpath=( $KDUMP_x_Realpath )"
     eval "kdump_mnt=( $KDUMP_x_mnt )"
+    test ${#kdump_URL[@]} -gt 0
 }									   # }}}
 
 #