Initial commit

.gitignore

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+*.o
+*~
+.deps
+.dirstamp
+/Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+cloud-init
+compile
+config.*
+configure
+depcomp
+install-sh
+missing
+stamp-h1
+data/cloud-init.service
+clr-cloud-init-*.tar.xz
+clr-cloud-init-*/

AUTHORS

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+Auke Kok <[email protected]>
+Dimitri John Ledkov <[email protected]>
+Ikey Doherty <[email protected]>
+Julio Montes <[email protected]>

LICENSE

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+ Copyright (C) 2015 Intel Corporation
+
+ Author: Auke-jan H. Kok <[email protected]>
+ Author: Julio Montes <[email protected]>
+
+ This file is part of clr-cloud-init.
+
+ clr-cloud-init is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ clr-cloud-init is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with clr-cloud-init. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL.  If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so.  If you
+ do not wish to do so, delete this exception statement from your
+ version.  If you delete this exception statement from all source
+ files in the program, then also delete it here.

Makefile.am

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+
+AM_CPPFLAGS = -I $(top_srcdir)/src -I $(top_srcdir)/src/interpreters
+AM_CFLAGS = -std=gnu99 -fstack-protector -Wall -pedantic \
+	-Wstrict-prototypes -Wundef -fno-common \
+	-Werror-implicit-function-declaration \
+	-Wformat -Wformat-security -Werror=format-security \
+	-Wconversion -Wunreachable-code
+
+EXTRA_DIST = \
+	LICENSE \
+	COPYING \
+	data/cloud-init.service.in
+
+DISTCHECK_CONFIGURE_FLAGS =  \
+	--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir) --enable-debug
+
+dist_man_MANS = \
+	docs/cloud-init.1 \
+	docs/cloud-config.5
+
+bin_PROGRAMS = cloud-init
+cloud_init_SOURCES = \
+	src/ccmodules.h \
+	src/ccmodules/groups.c \
+	src/ccmodules/package_upgrade.c \
+	src/ccmodules/packages.c \
+	src/ccmodules/service.c \
+	src/ccmodules/ssh_authorized_keys.c \
+	src/ccmodules/users.c \
+	src/ccmodules/write_files.c \
+	src/curl.c \
+	src/curl.h \
+	src/datasources.h \
+	src/datasources/openstack.c \
+	src/debug.h \
+	src/default_user.h \
+	src/handlers.h \
+	src/interpreters.h \
+	src/interpreters/cloud_config.c \
+	src/interpreters/cloud_config.h \
+	src/interpreters/shell_script.c \
+	src/json.c \
+	src/json.h \
+	src/lib.c \
+	src/lib.h \
+	src/main.c \
+	src/userdata.c \
+	src/userdata.h
+
+
+if DEBUG
+AM_CFLAGS += -ggdb3 -O0
+cloud_init_SOURCES += src/debug.c
+endif
+
+cloud_init_CFLAGS = $(AM_CFLAGS) $(GLIB_CFLAGS) $(YAML_CFLAGS) $(JSON_GLIB_CFLAGS)
+cloud_init_LDADD = $(GLIB_LIBS) $(YAML_LIBS) $(CURL_LIBS) $(JSON_GLIB_LIBS)
+SYSTEMD_DIR=$(prefix)/lib/systemd/system/
+systemdsystemunitdir = @SYSTEMD_SYSTEMUNITDIR@
+systemdsystemunit_DATA = data/cloud-init.service
+
+systemdsystemunit-install-local:
+	mkdir -p $(DESTDIR)$(systemdsystemunitdir)/multi-user.target.wants/
+	ln -sf ../cloud-init.service $(DESTDIR)$(systemdsystemunitdir)/multi-user.target.wants/cloud-init.service
+
+install-data-local: systemdsystemunit-install-local
+
+systemdsystemunit-uninstall-local:
+	rm -f $(DESTDIR)$(systemdsystemunitdir)/multi-user.target.wants/cloud-init.service
+
+uninstall-local: systemdsystemunit-uninstall-local

README

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+
+Contents:
+
+1) Description of this project
+2) Compiling, prerequisites
+3) Bugs and feedback?
+
+====
+
+1. Cloud-init for Clearlinux Project for Intel Architecture
+
+cloud-init is the standard way for cloud customers to initialize
+containers and virtual hosts. These virtual machines are usually
+provisioned in bulk and provided without any customization to cloud
+customers, which then require that they are customized for their
+particular purpose.
+
+Several implementations exist that implement this functionality,
+and this implementation is fairly similar to the other ones. For
+reference, we're listing the other implementations here:
+
+- https://launchpad.net/cloud-init
+    A Python-based implementation and the "standard". Many of the
+    features of this implementation are derived and benchmarked against
+    this version.  This implementation supports many different OS's,
+    not just Ubuntu.
+- https://github.com/coreos/coreos-cloudinit
+    A Go-based implementation for CoreOS.
+
+While generally it's preferred to use existing implementations,
+since it reduces duplicate code and makes stronger communities, in
+this project's case it was decided to forego extending and working
+on the existing implementations. Several factors were considered, and
+a short summary of the key points of that decision are listed below.
+
+Speed is a significant factor. Interpreted languages have come a long
+way and are highly performant, especially if properly used. However,
+theire is a significant cost of provisioning cloud nodes that have
+increased base storage costs due to the inclusion of libraries of
+interpreted languages. Since we expect people to prefer cloud nodes are
+minimal in size, having interpreted language libraries just for the
+sake of a cloud initialization script makes little sense, and we can
+reduce the storage need and copy times of cloud images significantly.
+
+Language choice is a minor factor. Generally languages that have
+good exception handling are preferred. Since execution speed and low
+complexity are preferred for installation and boot-time critical tasks,
+lots of libraries should be avoided, as robustness is critical. Missed
+python exceptions could cause cloud-init execution to halt, resulting
+in an unusable cloud host, which is to be avoided at all cost. The
+drawbacks of C being fairly sparse are known, and debugging tools
+compensate for that.
+
+We can shed additional overhead by eliminating unwanted functionality
+that a clearlinux cloud node does not need, but we can likely
+never recoup the initial cost of a base Python installation, as it
+is generally in the order of 100MB or more. Hence, we've opted to
+implement a version in C that has reduced library requrements. This
+has brought the size of this implementation down to under 1mb. Even
+considering used libraries, the resulting binary is small.
+
+
+====
+
+2. Compiling
+
+Currently, cloud-init requires the following prerequisites:
+- glib-2.0 >= 2.24.1
+- yaml-0.1 >= 0.1.4
+- libcurl
+- json-glib-1.0
+
+As cloud-init is tooled with autotools, one shouldn't have to do
+more than:
+
+$ sh autogen.sh
+$ make
+$ sudo make install
+
+
+====
+
+3. Bugs, feedback, contact
+
+cloud-init is hosted on github. You can find releases, an issue
+tracker and git sources on github.com/clearlinux/clr-cloud-init. For
+mailing lists, subscribe to [email protected] (via
+lists.clearlinux.org).
+
+This project has many contributors. Not all may be mentioned in the
+AUTHORS file.
+

autogen.sh

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+#!/bin/sh
+
+set -e
+
+export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/lib/pkgconfig
+
+autoreconf --force --install --symlink --warnings=all
+
+args="\
+--sysconfdir=/etc \
+--localstatedir=/var \
+--prefix=/usr \
+--enable-silent-rules"
+
+set -x
+./configure CFLAGS='-g -O0' $args "$@"
+make clean

configure.ac

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+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.68])
+AC_INIT([clr-cloud-init],[0],[[email protected]])
+AM_INIT_AUTOMAKE([foreign -Wall -Werror -Wno-portability silent-rules subdir-objects color-tests no-dist-gzip dist-xz])
+AC_CONFIG_SRCDIR([src/main.c])
+AC_CONFIG_FILES([Makefile
+		data/cloud-init.service])
+AC_CONFIG_HEADERS([config.h])
+
+# Checks for programs.
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_INSTALL
+AC_PROG_MKDIR_P
+
+# Checks for libraries.
+PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.24.1])
+PKG_CHECK_MODULES([YAML], [yaml-0.1 >= 0.1.4])
+PKG_CHECK_MODULES([CURL], [libcurl])
+PKG_CHECK_MODULES([JSON_GLIB], [json-glib-1.0])
+
+# Checks for header files.
+AC_CHECK_HEADERS([errno.h])
+AC_CHECK_HEADERS([getopt.h])
+AC_CHECK_HEADERS([glib.h])
+AC_CHECK_HEADERS([stdarg.h])
+AC_CHECK_HEADERS([stdbool.h])
+AC_CHECK_HEADERS([stdio.h])
+AC_CHECK_HEADERS([stdlib.h])
+AC_CHECK_HEADERS([stdlib.h])
+AC_CHECK_HEADERS([sys/types.h])
+AC_CHECK_HEADERS([unistd.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_CHECK_HEADER_STDBOOL
+
+AC_ARG_ENABLE(debug, AS_HELP_STRING([--enable-debug], [enable debug mode @<:@default=no@:>@]),
+	      [], [enable_debug=no])
+AS_IF([test "x$enable_debug" = "xyes"],
+	[AC_DEFINE([DEBUG], [1], [Debugging mode enabled])],
+	[AC_DEFINE([NDEBUG], [1], [Debugging and assertions disabled])])
+AM_CONDITIONAL([DEBUG], [test x$enable_debug = x"yes"])
+
+# Options
+AC_ARG_WITH([systemdsystemunitdir], AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
+	[path to systemd system service directory]), [path_systemdsystemunit=${withval}],
+	[path_systemdsystemunit="`$PKG_CONFIG --variable=systemdsystemunitdir systemd`"])
+	SYSTEMD_SYSTEMUNITDIR="${path_systemdsystemunit}"
+AC_SUBST(SYSTEMD_SYSTEMUNITDIR)
+AM_CONDITIONAL(SYSTEMD, test -n "${path_systemdsystemunit}")
+
+
+# Checks for library functions.
+
+AC_OUTPUT

data/cloud-init.service.in

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+[Unit]
+Description=Initial cloud-init job (metadata service crawler)
+After=local-fs.target network.target
+Before=sshd.service sshd-keygen.service
+Requires=network.target
+Wants=local-fs.target sshd.service sshd-keygen.service
+ConditionFirstBoot=yes
+
+[Service]
+Type=oneshot
+ExecStart=@prefix@/bin/cloud-init --first-boot
+RemainAfterExit=yes
+TimeoutSec=0
+
+# Output needs to appear in instance console output
+StandardOutput=journal+console
+
+[Install]
+WantedBy=multi-user.target