From 46001f4a5bff67f356407c51b4e2b29117565bb1 Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Mon, 13 Mar 2017 09:45:51 -0400
Subject: [PATCH] core: Add runtime ostree_check_version()

[Previously](https://github.com/ostreedev/ostree/pull/728) we added compile-time
checking for versions, but there are use cases for runtime checking as well,
because in a number of API calls we use `GVariant` as an API extension
mechanism.

Closes: #735
Approved by: jlebon
---
 apidoc/ostree-sections.txt  |  1 +
 src/libostree/libostree.sym |  8 +++-----
 src/libostree/ostree-core.c | 13 +++++++++++++
 src/libostree/ostree-core.h |  3 +++
 4 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/apidoc/ostree-sections.txt b/apidoc/ostree-sections.txt
index 787664b3..cba6ec46 100644
--- a/apidoc/ostree-sections.txt
+++ b/apidoc/ostree-sections.txt
@@ -133,6 +133,7 @@ ostree_validate_structureof_dirtree
 ostree_validate_structureof_dirmeta
 ostree_commit_get_parent
 ostree_commit_get_timestamp
+ostree_check_version
 </SECTION>
 
 <SECTION>
diff --git a/src/libostree/libostree.sym b/src/libostree/libostree.sym
index b7cfc454..9067a26c 100644
--- a/src/libostree/libostree.sym
+++ b/src/libostree/libostree.sym
@@ -386,12 +386,10 @@ global:
  *                         NOTE NOTE NOTE
  */
 
-/* Stub section for new version, uncomment when the first symbol is added
-LIBOSTREE_2017.$NEWVERSION {
+LIBOSTREE_2017.4 {
 global:
-	someostree_symbol_deleteme;
-} LIBOSTREE_2017.2;
-*/
+  ostree_check_version;
+} LIBOSTREE_2017.3;
 
 /* Stub section for the stable release *after* this development one; don't
  * edit this other than to update the last number.  This is just a copy/paste
diff --git a/src/libostree/ostree-core.c b/src/libostree/ostree-core.c
index cf238b41..db03c034 100644
--- a/src/libostree/ostree-core.c
+++ b/src/libostree/ostree-core.c
@@ -2153,3 +2153,16 @@ _ostree_get_default_sysroot_path (void)
 
   return default_sysroot_path;
 }
+
+/**
+ * ostree_check_version:
+ * @required_year: Major/year required
+ * @required_release: Release version required
+ *
+ * Returns: %TRUE if current libostree has at least the requested version, %FALSE otherwise
+ */
+gboolean
+ostree_check_version (guint required_year, guint required_release)
+{
+  return OSTREE_CHECK_VERSION(required_year, required_release);
+}
diff --git a/src/libostree/ostree-core.h b/src/libostree/ostree-core.h
index bd3d5f2c..bcade9db 100644
--- a/src/libostree/ostree-core.h
+++ b/src/libostree/ostree-core.h
@@ -399,4 +399,7 @@ gchar *  ostree_commit_get_parent            (GVariant  *commit_variant);
 _OSTREE_PUBLIC
 guint64  ostree_commit_get_timestamp         (GVariant  *commit_variant);
 
+_OSTREE_PUBLIC
+gboolean ostree_check_version (guint required_year, guint required_release);
+
 G_END_DECLS