Add an OstreeSysrootUpgrader API

This moves some utility code from the ostree tool into the shared
library, which will make it easier to consume by external tools.

src/libostree/ostree-sysroot-upgrader.h

@@ -0,0 +1,71 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2014 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.
+ */
+
+#pragma once
+
+#include "ostree-sysroot.h"
+
+G_BEGIN_DECLS
+
+#define OSTREE_TYPE_SYSROOT_UPGRADER ostree_sysroot_upgrader_get_type()
+#define OSTREE_SYSROOT_UPGRADER(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), OSTREE_TYPE_SYSROOT_UPGRADER, OstreeSysrootUpgrader))
+#define OSTREE_IS_SYSROOT_UPGRADER(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), OSTREE_TYPE_SYSROOT_UPGRADER))
+
+GType ostree_sysroot_upgrader_get_type (void);
+
+OstreeSysrootUpgrader *ostree_sysroot_upgrader_new (OstreeSysroot *sysroot,
+                                                    GCancellable  *cancellable,
+                                                    GError       **error);
+
+OstreeSysrootUpgrader *ostree_sysroot_upgrader_new_for_os (OstreeSysroot *sysroot,
+                                                           const char    *osname,
+                                                           GCancellable  *cancellable,
+                                                           GError       **error);
+
+GKeyFile *ostree_sysroot_upgrader_get_origin (OstreeSysrootUpgrader *self);
+gboolean ostree_sysroot_upgrader_set_origin (OstreeSysrootUpgrader *self, GKeyFile *origin,
+                                             GCancellable *cancellable, GError **error);
+
+gboolean ostree_sysroot_upgrader_check_timestamps (OstreeRepo     *repo,
+                                                   const char     *from_rev,
+                                                   const char     *to_rev,
+                                                   GError        **error);
+
+typedef enum {
+  OSTREE_SYSROOT_UPGRADER_PULL_FLAGS_NONE = 0,
+  OSTREE_SYSROOT_UPGRADER_PULL_FLAGS_ALLOW_OLDER = (1 << 0)
+} OstreeSysrootUpgraderPullFlags;
+
+gboolean ostree_sysroot_upgrader_pull (OstreeSysrootUpgrader  *self,
+                                       OstreeRepoPullFlags     flags,
+                                       OstreeSysrootUpgraderPullFlags     upgrader_flags,
+                                       OstreeAsyncProgress    *progress,
+                                       gboolean               *out_changed,
+                                       GCancellable           *cancellable,
+                                       GError                **error);
+
+gboolean ostree_sysroot_upgrader_deploy (OstreeSysrootUpgrader  *self,
+                                         GCancellable           *cancellable,
+                                         GError                **error);
+
+G_END_DECLS
+