login-common: Track referenced but destroyed clients in a linked list

This helps debugging.

diff --git a/src/login-common/client-common.c b/src/login-common/client-common.c
index 65ce12766bb3bc2770673fa4317e70d2d3f0b3f6..bedfa26d48cd859a29d0e76eb4bfb1b52c0927d6 100644 (file)
--- a/src/login-common/client-common.c
+++ b/src/login-common/client-common.c
@@ -31,6 +31,7 @@
 #include "client-common.h"
 
 struct client *clients = NULL;
+struct client *destroyed_clients = NULL;
 static struct client *last_client = NULL;
 static unsigned int clients_count = 0;
 
@@ -309,6 +310,7 @@ void client_destroy(struct client *client, const char *reason)
        /* remove from clients linked list before it's added to
           client_fd_proxies. */
        DLLIST_REMOVE(&clients, client);
+       DLLIST_PREPEND(&destroyed_clients, client);
 
        client_disconnect(client, reason, !client->login_success);
 
@@ -413,6 +415,7 @@ bool client_unref(struct client **_client)
        i_close_fd(&client->fd);
        event_unref(&client->event);
 
+       DLLIST_REMOVE(&destroyed_clients, client);
        i_free(client->proxy_user);
        i_free(client->proxy_master_user);
        i_free(client->virtual_user);