[ostree] core: Stub out a system daemon

[Colin Walters <walters src gnome org>]

commit c117aadc95bb2b24c2bbbc8d7fa628552fa3e344
Author: Colin Walters <walters verbum org>
Date:   Sun Nov 20 20:55:24 2011 -0500

    core: Stub out a system daemon

 Makefile-daemon.am     |   28 ++++++++++
 Makefile.am            |    1 +
 src/daemon/main.c      |   53 ++++++++++++++++++
 src/daemon/ot-daemon.c |  142 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/daemon/ot-daemon.h |   41 ++++++++++++++
 5 files changed, 265 insertions(+), 0 deletions(-)
---
diff --git a/Makefile-daemon.am b/Makefile-daemon.am
new file mode 100644
index 0000000..898e2f9
--- /dev/null
+++ b/Makefile-daemon.am
@@ -0,0 +1,28 @@
+# Makefile for C source code
+#
+# Copyright (C) 2011 Colin Walters <walters verbum org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+libexec_PROGRAMS += ostreed
+
+ostreed_SOURCES = src/daemon/main.c \
+	src/daemon/ot-daemon.h \
+	src/daemon/ot-daemon.c \
+	$(NULL)
+
+ostreed_CFLAGS = $(AM_CFLAGS) -I$(srcdir)/src/libotutil -I$(srcdir)/src/libostree -I$(srcdir)/src/daemon -DLOCALEDIR=\"$(datadir)/locale\" $(OT_COREBIN_DEP_CFLAGS)
+ostreed_LDADD = libotutil.la libostree.la $(OT_COREBIN_DEP_LIBS)
diff --git a/Makefile.am b/Makefile.am
index 917b29d..8cfa59f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -29,6 +29,7 @@ libexec_PROGRAMS =
 noinst_LTLIBRARIES =
 noinst_PROGRAMS =
 
+include Makefile-daemon.am
 include Makefile-otutil.am
 include Makefile-libostree.am
 include Makefile-ostree.am
diff --git a/src/daemon/main.c b/src/daemon/main.c
new file mode 100644
index 0000000..eda32e8
--- /dev/null
+++ b/src/daemon/main.c
@@ -0,0 +1,53 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2011 Colin Walters <walters verbum org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Colin Walters <walters verbum org>
+ */
+
+#include "config.h"
+
+#include "ostree.h"
+#include "ot-daemon.h"
+
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+int
+main (int    argc,
+      char **argv)
+{
+  OstreeDaemon *daemon = NULL;
+
+  g_type_init ();
+
+  g_set_prgname (argv[0]);
+
+  if (getuid () != 0)
+    {
+      g_printerr ("This program must be run as root\n");
+      exit (1);
+    }
+
+  daemon = ostree_daemon_new ();
+
+  g_main_loop_run (daemon->loop);
+
+  return 0;
+}
diff --git a/src/daemon/ot-daemon.c b/src/daemon/ot-daemon.c
new file mode 100644
index 0000000..cb3e275
--- /dev/null
+++ b/src/daemon/ot-daemon.c
@@ -0,0 +1,142 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2011 Colin Walters <walters verbum org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Colin Walters <walters verbum org>
+ */
+
+#include "config.h"
+
+#include <gio/gio.h>
+#include <gio/gunixfdlist.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "ostree.h"
+#include "ot-daemon.h"
+
+static GDBusNodeInfo *introspection_data = NULL;
+
+static const gchar introspection_xml[] =
+  "<node>"
+  "  <interface name='org.gnome.OSTree'>"
+  "    <method name='CancelOperation'>"
+  "      <arg type='u' name='id' direction='in'/>"
+  "    </method>"
+  "    <method name='AddBootRoot'>"
+  "      <arg type='s' name='revision' direction='in'/>"
+  "      <arg type='u' name='op_id' direction='out'/>"
+  "    </method>"
+  "    <method name='RemoveBootRoot'>"
+  "      <arg type='s' name='revision' direction='in'/>"
+  "      <arg type='u' name='op_id' direction='out'/>"
+  "    </method>"
+  "    <method name='SetBootRoot'>"
+  "      <arg type='s' name='revision' direction='in'/>"
+  "      <arg type='u' name='op_id' direction='out'/>"
+  "    </method>"
+  "    <method name='OverlayTar'>"
+  "      <arg type='s' name='filename' direction='in'/>"
+  "      <arg type='u' name='op_id' direction='out'/>"
+  "    </method>"
+  "  </interface>"
+  "</node>";
+static void
+handle_method_call (GDBusConnection       *connection,
+                    const gchar           *sender,
+                    const gchar           *object_path,
+                    const gchar           *interface_name,
+                    const gchar           *method_name,
+                    GVariant              *parameters,
+                    GDBusMethodInvocation *invocation,
+                    gpointer               user_data)
+{
+}
+
+static const GDBusInterfaceVTable interface_vtable =
+{
+  handle_method_call,
+  NULL,
+  NULL 
+};
+
+static void
+on_bus_acquired (GDBusConnection *connection,
+                 const gchar     *name,
+                 gpointer         user_data)
+{
+  guint id;
+
+  id = g_dbus_connection_register_object (connection,
+                                          "/org/gnome/OSTree",
+                                          introspection_data->interfaces[0],
+                                          &interface_vtable,
+                                          NULL,  /* user_data */
+                                          NULL,  /* user_data_free_func */
+                                          NULL); /* GError** */
+  g_assert (id > 0);
+}
+
+static void
+on_name_acquired (GDBusConnection *connection,
+                  const gchar     *name,
+                  gpointer         user_data)
+{
+  OstreeDaemon *daemon = user_data;
+  GError *error = NULL;
+
+  daemon->repo = ostree_repo_new ("/sysroot/ostree/repo");
+  if (!ostree_repo_check (daemon->repo, &error))
+    {
+      g_printerr ("%s\n", error->message);
+      g_clear_error (&error);
+      exit (1);
+    }
+}
+
+static void
+on_name_lost (GDBusConnection *connection,
+              const gchar     *name,
+              gpointer         user_data)
+{
+  exit (1);
+}
+
+
+OstreeDaemon *
+ostree_daemon_new (void)
+{
+  OstreeDaemon *ret = g_new0 (OstreeDaemon, 1);
+
+  ret->loop = g_main_loop_new (NULL, TRUE);
+
+  introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
+
+  ret->name_id = g_bus_own_name (G_BUS_TYPE_SYSTEM,
+                                 "org.gnome.OSTree",
+                                 G_BUS_NAME_OWNER_FLAGS_NONE,
+                                 on_bus_acquired,
+                                 on_name_acquired,
+                                 on_name_lost,
+                                 NULL,
+                                 NULL);
+
+  return ret;
+}
+
diff --git a/src/daemon/ot-daemon.h b/src/daemon/ot-daemon.h
new file mode 100644
index 0000000..4077bf1
--- /dev/null
+++ b/src/daemon/ot-daemon.h
@@ -0,0 +1,41 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2011 Colin Walters <walters verbum org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Colin Walters <walters verbum org>
+ */
+
+#ifndef __OSTREE_DAEMON__
+#define __OSTREE_DAEMON__
+
+#include <gio/gio.h>
+
+G_BEGIN_DECLS
+
+typedef struct {
+  GMainLoop *loop;
+  OstreeRepo  *repo;
+
+  int name_id;
+} OstreeDaemon;
+
+OstreeDaemon *ostree_daemon_new (void);
+
+G_END_DECLS
+
+#endif