libalpm/db.c : add alpm_db_unregister_all.

This basically moves the code from alpm_release, which was mostly about
unregistering all databases, to a safer alpm_db_unregister_all.
This allows to avoid modifying the dbs_sync list while iterating over it,
and and also prevent alpm_release from looping infinitely when a database
can't be unregistered.

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h
index 9e641f3e..98028de8 100644
--- a/lib/libalpm/alpm.h
+++ b/lib/libalpm/alpm.h
@@ -145,6 +145,7 @@ alpm_list_t *alpm_option_get_syncdbs();
 
 pmdb_t *alpm_db_register(const char *treename);
 int alpm_db_unregister(pmdb_t *db);
+int alpm_db_unregister_all();
 
 const char *alpm_db_get_name(const pmdb_t *db);
 const char *alpm_db_get_url(const pmdb_t *db);