From aba3da2a7fcd51bb1f48cbb06620e1648235a115 Mon Sep 17 00:00:00 2001
From: Manfred Touron <m@42.am>
Date: Thu, 23 Oct 2014 18:08:52 +0200
Subject: [PATCH] Moved common patches

---
 .../common-patches/usr/local/bin/oc-metadata  | 22 ++++++
 .../usr/local/bin/oc-metadata-json            | 15 ++++
 .../usr/sbin/nbd-disconnect-root              | 74 +++++++++++++++++++
 .../usr/sbin/oc-add-extra-volumes             | 70 ++++++++++++++++++
 .../usr/sbin/oc-sync-kernel-modules           | 29 ++++++++
 5 files changed, 210 insertions(+)
 create mode 100755 images/common-patches/usr/local/bin/oc-metadata
 create mode 100755 images/common-patches/usr/local/bin/oc-metadata-json
 create mode 100755 images/common-patches/usr/sbin/nbd-disconnect-root
 create mode 100755 images/common-patches/usr/sbin/oc-add-extra-volumes
 create mode 100755 images/common-patches/usr/sbin/oc-sync-kernel-modules

diff --git a/images/common-patches/usr/local/bin/oc-metadata b/images/common-patches/usr/local/bin/oc-metadata
new file mode 100755
index 0000000..7dfc7e1
--- /dev/null
+++ b/images/common-patches/usr/local/bin/oc-metadata
@@ -0,0 +1,22 @@
+#!/bin/sh
+# description "executable which retrieves server metadata (TEXT)"
+# author "Online Labs Cloud Team <cloud-team@labs.online.net>"
+
+CODE=0
+while [ $CODE -ne 200 ]
+do
+    METADATA_URL=${METADATA_URL:-"http://169.254.42.42/conf"}
+    RESPONSE=$(curl --silent --write-out "\n%{http_CODE}\n" $METADATA_URL)
+    CODE=$(echo "$RESPONSE" | sed -n '$p')
+    BODY=$(echo "$RESPONSE" | sed '$d')
+
+    test $CODE -eq 200 && break
+    sleep 5
+done
+
+if [ "$#" -ne 1 ]; then
+    echo "$BODY"
+else
+    key="$1"
+    echo "$BODY" | grep "^$key=" | cut -d= -f2 | sed "s/^['\"]//;s/['\"]$//"
+fi
diff --git a/images/common-patches/usr/local/bin/oc-metadata-json b/images/common-patches/usr/local/bin/oc-metadata-json
new file mode 100755
index 0000000..a3bb610
--- /dev/null
+++ b/images/common-patches/usr/local/bin/oc-metadata-json
@@ -0,0 +1,15 @@
+#!/bin/sh
+# description "executable which retrieves server metadata (JSON)"
+# author "Online Labs Cloud Team <cloud-team@labs.online.net>"
+
+CODE=0
+while [ $CODE -ne 200 ]
+do
+    RESPONSE=$(curl --silent --write-out "\n%{http_CODE}\n" http://169.254.42.42/conf?format=json)
+    CODE=$(echo "$RESPONSE" | sed -n '$p')
+    BODY=$(echo "$RESPONSE" | sed '$d')
+    test $CODE -eq 200 && break
+    sleep 5 
+done
+
+echo "$BODY"
diff --git a/images/common-patches/usr/sbin/nbd-disconnect-root b/images/common-patches/usr/sbin/nbd-disconnect-root
new file mode 100755
index 0000000..518e257
--- /dev/null
+++ b/images/common-patches/usr/sbin/nbd-disconnect-root
@@ -0,0 +1,74 @@
+#!/bin/sh
+# Thanks to the LTSP project
+# If the root /dev/nbd0 device is unmounted on shutdown then nbd read
+# errors occur, and if it isn't, then # the nbd-server process on the server
+# doesn't terminate.
+# Called by init scripts on reboot or shutdown.
+ 
+case "$RUNLEVEL" in
+    0)
+        key="o"
+        command="poweroff -f"
+        ;;
+    6)
+        key="b"
+        command="reboot"
+        ;;
+    *)
+        echo "nbd-disconnect should only be called by initscripts on reboot/shutdown." >&2
+        exit 1
+        ;;
+esac
+ 
+disconnect() {
+    # Stop trapping
+    trap - 0 HUP INT QUIT KILL SEGV PIPE TERM
+ 
+    # ltsp-client-core.upstart needs "console output" to show stderr
+    echo "nbd-disconnect executing: " >&2
+    # Cache the command in order to use it after nbd-client disconnects
+    $command --version >/dev/null 2>&1
+    nbd-client -d "$root"
+    $command 
+    
+    # Hopefully this should never be reached
+    echo "$key" > /proc/sysrq-trigger
+}
+ 
+# Disconnect swap nbd devices first
+while read device etc; do
+    case "$device" in
+        /dev/nbd[0-9])
+            swapoff "$device"
+            nbd-client -d "$device"
+            ;;
+        /dev/mapper/swap[0-9])
+            nbd_device=$(cryptsetup status "$device" | awk '/device:/{print $2}')
+            swapoff "$device"
+            cryptsetup remove "$device"
+            case "$nbd_device" in
+                /dev/nbd[1-9])
+                    nbd-client -d "$nbd_device"
+                    ;;
+            esac
+            ;;
+    esac
+done < /proc/swaps
+ 
+# If we're not using an nbd root, exit
+unset root
+for param in $(cat /proc/cmdline); do
+    case "$param" in
+        root=/dev/nbd[0-9])
+            root="${param#root=}"
+            ;;
+    esac
+done
+test -n "$root" || exit 0
+ 
+trap "disconnect" 0 HUP INT QUIT KILL SEGV PIPE TERM
+sync
+# Give up to 5 seconds for other services to be called.
+# If they finish before that time, process termination will start, and the trap
+# will be called.
+sleep 5
diff --git a/images/common-patches/usr/sbin/oc-add-extra-volumes b/images/common-patches/usr/sbin/oc-add-extra-volumes
new file mode 100755
index 0000000..72571fd
--- /dev/null
+++ b/images/common-patches/usr/sbin/oc-add-extra-volumes
@@ -0,0 +1,70 @@
+#!/bin/bash
+
+METADATA_CACHE=`mktemp -u`
+
+get_metadata() {
+    if [ ! -f $METADATA_CACHE ]; then
+        /usr/local/bin/oc-metadata > $METADATA_CACHE
+    fi
+}
+
+get_value() {
+  # Get value from metadata
+  key="$1"
+  grep "^$key=" "$METADATA_CACHE" | cut -d= -f2 | sed "s/^['\"]//;s/['\"]$//"
+}
+
+get_nbd_client_conf() {
+  keys=$(get_value VOLUMES)
+
+cat <<EOF
+# If you don't want to reconfigure this package after installing, uncomment
+# the following line:
+#AUTO_GEN="n"
+# If you don't want the init script to kill nbd-client devices that aren't
+# specified in this configuration file, set the following to "false":
+KILLALL="false"
+# Note that any statical settings in this file will be preserved
+# regardless of the setting of AUTO_GEN, so its use is only recommended
+# if you set things in a dynamical way (e.g., through a database)
+EOF
+  conf_id=0
+  for key in $keys; do
+    # Do not include the rootfs in nbd configuration file. It has been mounted
+    # from the initramfs, we won't want it to be disconnected when
+    # /etc/rc6.d/K34nbd-client is executed.
+    test $key -eq 0 && continue
+
+
+# NBD_TYPE[x]=r => raw (no other setup than to run the client)
+    cat <<EOF
+#
+NBD_TYPE[$conf_id]=r
+NBD_DEVICE[$conf_id]=/dev/nbd$key
+NBD_HOST[$conf_id]=$(get_value VOLUMES_${key}_EXPORT_URI | sed 's|nbd://\(.*\):.*|\1|')
+NBD_PORT[$conf_id]=$(get_value VOLUMES_${key}_EXPORT_URI | sed 's|nbd://.*:\(.*\)|\1|')
+EOF
+    conf_id=$((conf_id + 1))
+
+  done
+}
+
+nbd_clients_connection() {
+  /etc/init.d/nbd-client start
+
+  keys=$(get_value VOLUMES)
+  for key in $keys; do
+    test $key -eq 0 && continue
+    NBD_DEVICE=/dev/nbd$key
+    until nbd-client -c $NBD_DEVICE
+    do
+      /etc/init.d/nbd-client start
+      sleep 5
+    done
+  done
+}
+
+get_metadata
+get_nbd_client_conf > /etc/nbd-client
+nbd_clients_connection
+rm $METADATA_CACHE
diff --git a/images/common-patches/usr/sbin/oc-sync-kernel-modules b/images/common-patches/usr/sbin/oc-sync-kernel-modules
new file mode 100755
index 0000000..ca39e91
--- /dev/null
+++ b/images/common-patches/usr/sbin/oc-sync-kernel-modules
@@ -0,0 +1,29 @@
+#!/bin/sh
+# description "synchronizes kernel module"
+# author "Online Labs Cloud Team <cloud-team@labs.online.net>"
+
+DIR=/lib/modules
+mkdir -p $DIR
+TMP_DIR=`mktemp -d -p $DIR`
+KVERSION=`uname -r`
+TIMEOUT=10
+
+clean() {
+    rm -rf "$TMP_DIR" 2>/dev/null
+}
+trap 'clean' INT TERM EXIT
+
+if [ ! -d $DIR/${KVERSION} ]
+then
+  wget --timeout=${TIMEOUT} --quiet --no-check-certificate -r --no-parent \
+     --reject "index.html*" --reject "robots.txt" \
+     --no-host-directories --cut-dirs 3 --directory-prefix \
+     $TMP_DIR http://mirror.cloud.online.net/kernel/${KVERSION}/modules/${KVERSION}/
+
+  if [ $? -eq 0 ]
+  then
+    mkdir -p $DIR/${KVERSION}
+    mv $TMP_DIR/${KVERSION} $DIR
+  fi
+fi
+