Enable running disk-image-create on SUSE Linux

- Ensures /sbin and friends are in $PATH when invoked (without this,
  various sudo invocations fail in exciting ways).
- Use dib-run-parts in lib/common-functions instead of run-parts
  (neither SLES nor openSUSE ship run-parts).
- Ensure dib-run-parts doesn't descend into subdirectories (same
  behaviour as run-parts).
- Move dib-run-parts from root.d to bin (cleaner, consistent with
  other elements with separate bin scripts).
- Tested by building Ubuntu image on openSUSE 12.3.
- Note: this doesn't add support for creating SUSE images, it just
  lets you run disk-image-create on SUSE-based distros.

Change-Id: I906c6bc3cf51cdf2c4415adeae1ca250faac25e1

bin/dib-run-parts

@@ -0,0 +1 @@
+../elements/dib-run-parts/bin/dib-run-parts

elements/dib-run-parts/bin/dib-run-parts

@@ -0,0 +1,88 @@
+#!/bin/bash
+# Inspired by Debian and RedHat run-parts but portable and specific to di-b.
+#
+# Copyright 2012 Hewlett-Packard Development Company, L.P.
+# All Rights Reserved.
+#
+# 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.
+
+allowed_regex=${RUN_PARTS_REGEX:-"^[0-9A-Za-z_-]+$"}
+
+set -ue
+
+name=$(basename $0)
+
+usage() {
+    echo "usage: $name scripts_directory" >&2
+    exit 1
+}
+
+output () {
+    echo $name $(date) $* >&2
+}
+
+if [ $# -lt 1 ] ; then
+    usage
+fi
+
+target_dir=$1
+
+if ! [ -d $target_dir ] ; then
+    output $target_dir must exist and be a directory
+    usage
+fi
+
+# We specifically only want to sort *by the numbers*.
+# Lexical sorting is not guaranteed, and identical numbers may be
+# parallelized later
+# Note: -maxdepth 1 ensures only files in the target directory (but not
+# subdirectories) are run, which is the way run-parts behaves.
+targets=$(find $target_dir -maxdepth 1 -type f -executable -printf '%f\n' | grep -E "$allowed_regex" | LANG=C sort -n)
+
+PROFILE_DIR=$(mktemp -d /tmp/profiledir.XXXXXX)
+
+if [ -d /tmp/in_target.d/environment.d ] ; then
+    for env_file in /tmp/in_target.d/environment.d/* ; do
+        source $env_file
+    done
+fi
+
+for target in $targets ; do
+    output "Running $target_dir/$target"
+    target_tag=${target//\//_}
+    date +%s.%N > $PROFILE_DIR/start_$target_tag
+    $target_dir/$target
+    target_tag=${target//\//_}
+    date +%s.%N > $PROFILE_DIR/stop_$target_tag
+    output "$target completed"
+done
+
+echo "----------------------- PROFILING -----------------------"
+echo ""
+echo "Target: $(basename $target_dir)"
+echo ""
+printf "%-40s %9s\n" Script Seconds
+printf "%-40s %9s\n" --------------------------------------- ----------
+echo ""
+pushd $PROFILE_DIR > /dev/null
+for target in $(find . -name 'start_*' -printf '%f\n') ; do
+    stop_file=stop_${target##start_}
+    start_seconds=$(cat $target)
+    stop_seconds=$(cat $stop_file)
+    duration=$(python -c "print $stop_seconds - $start_seconds")
+    printf "%-40s %10.3f\n" ${target##start_} $duration
+done
+popd > /dev/null
+rm -rf $PROFILE_DIR
+echo ""
+echo "--------------------- END PROFILING ---------------------"