Check local DB version before continuing transaction

Ensure we have a local DB version that is up to par with what we expect
before we go down any road that might modify it. This should prevent
stupid mistakes with the 3.5.X upgrade and people not running
pacman-db-upgrade after the transaction as they will need to.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c
index 2a8db8e0..fb64faed 100644
--- a/lib/libalpm/db.c
+++ b/lib/libalpm/db.c
@@ -405,6 +405,14 @@ const char *_alpm_db_path(pmdb_t *db)
 	return(db->_path);
 }
 
+int _alpm_db_version(pmdb_t *db)
+{
+	if(!db) {
+		return(-1);
+	}
+	return(db->ops->version(db));
+}
+
 int _alpm_db_cmp(const void *d1, const void *d2)
 {
 	pmdb_t *db1 = (pmdb_t *)d1;