CONFDB: Allow configuring [application] sections as non-POSIX domains

Related to:
https://pagure.io/SSSD/sssd/issue/3310

Allows to add a new section:
    [application/$name]

This section internally (on the confdb level) expands to:
    [domain/$name]
    domain_type = application

The reasons to add this new section is two-fold. One, to make the
configuration of application domains more explicit and two, to make it
possible to share configuration between two domains, one POSIX and one
non-POSIX by application domain's inherit_from option:
    [application/$name]
    inherit_from = posix_domain_name

Reviewed-by: Sumit Bose <sbose@redhat.com>
Reviewed-by: Pavel Březina <pbrezina@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/monitor/monitor.c b/src/monitor/monitor.c
index 7e7b5a07d..2753b4666 100644
--- a/src/monitor/monitor.c
+++ b/src/monitor/monitor.c
@@ -1064,6 +1064,14 @@ static int get_monitor_config(struct mt_ctx *ctx)
         /* Not fatal */
     }
 
+    ret = confdb_expand_app_domains(ctx->cdb);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_FATAL_FAILURE, "Failed to expand application domains\n");
+        /* This must not be fatal so that SSSD keeps running and lets
+         * admin correct the error.
+         */
+    }
+
     ret = confdb_get_domains(ctx->cdb, &ctx->domains);
     if (ret != EOK) {
         DEBUG(SSSDBG_FATAL_FAILURE, "No domains configured.\n");