M #-: add script to recreate TMPFS

src/etc/one-context.d/loc-04-tmpfs

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+# -------------------------------------------------------------------------- #
+# Copyright 2002-2020, OpenNebula Project, OpenNebula Systems                #
+#                                                                            #
+# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
+# not use this file except in compliance with the License. You may obtain    #
+# a copy of the License at                                                   #
+#                                                                            #
+# http://www.apache.org/licenses/LICENSE-2.0                                 #
+#                                                                            #
+# Unless required by applicable law or agreed to in writing, software        #
+# distributed under the License is distributed on an "AS IS" BASIS,          #
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
+# See the License for the specific language governing permissions and        #
+# limitations under the License.                                             #
+#--------------------------------------------------------------------------- #
+
+TMP_DIR=$(mktemp -d "/tmp/one-context.XXXXXX")
+
+# Umount the directory and remove it
+cleanup()
+{
+    [ "$MOUNT" = "yes" ] && umount "${TMP_DIR}"
+    rm -rf "${TMP_DIR}"
+}
+
+# Get files that should be copy from
+get_files()
+{
+    diff -qr "$1" "$2" | grep "Only in $1" | cut -d ':' -f2 | awk '{$1=$1};1'
+}
+
+if [ "${RECREATE_TMPFS^^}" = "YES" ]; then
+    MOUNT=yes
+
+    mount --bind -o ro / "${TMP_DIR}"
+
+    IFS=$'\n'
+
+    # Copy only files that are in /run but not in /var/run
+    files=$(get_files "${TMP_DIR}"/run /var/run)
+
+    for file in $files;
+    do
+        cp -pr "${TMP_DIR}"/run/"${file}" /var/run &> /dev/null
+    done
+fi
+
+trap cleanup EXIT
+
+exit 0