database: Do not try to unmap failed mappings

[people/ms/libloc.git] / src / database.c

diff --git a/src/database.c b/src/database.c
index 8e1e98fbf98eecb948f97c8cb897862ec60ed806..075a26add060e23878d2b5eedbb3c526188e7bc7 100644 (file)
--- a/src/database.c
+++ b/src/database.c
@@ -433,28 +433,28 @@ static void loc_database_free(struct loc_database* db) {
        DEBUG(db->ctx, "Releasing database %p\n", db);
 
        // Removing all ASes
-       if (db->as_v1) {
+       if (db->as_v1 && db->as_v1 != MAP_FAILED) {
                r = munmap(db->as_v1, db->as_count * sizeof(*db->as_v1));
                if (r)
                        ERROR(db->ctx, "Could not unmap AS section: %m\n");
        }
 
        // Remove mapped network sections
-       if (db->networks_v1) {
+       if (db->networks_v1 && db->networks_v1 != MAP_FAILED) {
                r = munmap(db->networks_v1, db->networks_count * sizeof(*db->networks_v1));
                if (r)
                        ERROR(db->ctx, "Could not unmap networks section: %m\n");
        }
 
        // Remove mapped network nodes section
-       if (db->network_nodes_v1) {
+       if (db->network_nodes_v1 && db->network_nodes_v1 != MAP_FAILED) {
                r = munmap(db->network_nodes_v1, db->network_nodes_count * sizeof(*db->network_nodes_v1));
                if (r)
                        ERROR(db->ctx, "Could not unmap network nodes section: %m\n");
        }
 
        // Remove mapped countries section
-       if (db->countries_v1) {
+       if (db->countries_v1 && db->countries_v1 != MAP_FAILED) {
                r = munmap(db->countries_v1, db->countries_count * sizeof(*db->countries_v1));
                if (r)
                        ERROR(db->ctx, "Could not unmap countries section: %m\n");