Change the way domains are linked.

- Use a double-linked list for domains and subdomains.
- Never remove a subdomain, simply mark it as disabled if it becomes
  unused.
- Rework the way subdomains are refreshed.
  Now sysdb_update_subdomains() actually updates the current subdomains
  and marks as disabled the ones not found in the sysdb or add new ones
  found. It never removes them.
  Removal of missing domains from sysdb is deferred to the providers,
  which will perform it at refresh time, for the ipa provider that is
  done by ipa_subdomains_write_mappings() now.
  sysdb_update_subdomains() is then used to update the memory hierarchy
  of the subdomains.

- Removes sysdb_get_subdomains()
- Removes copy_subdomain()
- Add sysdb_subdomain_delete()

1 files changed, 2 insertions, 5 deletions

diff --git a/src/db/sysdb.h b/src/db/sysdb.h
index 2bc858edb..fff97a8aa 100644
--- a/src/db/sysdb.h
+++ b/src/db/sysdb.h
@@ -355,11 +355,6 @@ int sysdb_transaction_commit(struct sysdb_ctx *sysdb);
 int sysdb_transaction_cancel(struct sysdb_ctx *sysdb);
 
 /* functions related to subdomains */
-errno_t sysdb_get_subdomains(TALLOC_CTX *mem_ctx,
-                             struct sss_domain_info *domain,
-                             size_t *subdomain_count,
-                             struct sss_domain_info ***subdomain_list);
-
 errno_t sysdb_domain_create(struct sysdb_ctx *sysdb, const char *domain_name);
 
 errno_t sysdb_subdomain_store(struct sysdb_ctx *sysdb,
@@ -374,6 +369,8 @@ errno_t sysdb_master_domain_add_info(struct sss_domain_info *domain,
                                      const char *realm, const char *flat,
                                      const char *id);
 
+errno_t sysdb_subdomain_delete(struct sysdb_ctx *sysdb, const char *name);
+
 errno_t sysdb_get_ranges(TALLOC_CTX *mem_ctx, struct sysdb_ctx *sysdb,
                              size_t *range_count,
                              struct range_info ***range_list);