s3-printing: remove unneeded local_pcap_copy global

The cups local_pcap_copy global served as a temporary buffer during
asynchronous cups printcap cache updates, as well as indicating when
the printcap cache had not yet been filled and printcap cache update
should block.

As smbd printcap reads are now triggered by the parent smbd following
printcap cache update, the variable and blocking mechanism are no longer
needed.

Signed-off-by: Andreas Schneider <asn@samba.org>

1 files changed, 18 insertions, 36 deletions

diff --git a/source3/printing/print_cups.c b/source3/printing/print_cups.c
index 0e5dac5374..d2df2587e2 100644
--- a/source3/printing/print_cups.c
+++ b/source3/printing/print_cups.c
@@ -390,8 +390,7 @@ static bool cups_cache_reload_async(int fd)
 	return ret;
 }
 
-static struct pcap_cache *local_pcap_copy;
-struct fd_event *cache_fd_event;
+static struct fd_event *cache_fd_event;
 
 static bool cups_pcap_load_async(struct tevent_context *ev,
 				 struct messaging_context *msg_ctx,
@@ -553,12 +552,8 @@ static void cups_async_callback(struct event_context *event_ctx,
 	TALLOC_FREE(frame);
 	if (tmp_pcap_cache) {
 		bool ret;
-		/* We got a namelist, replace our local cache. */
-		pcap_cache_destroy_specific(&local_pcap_copy);
-		local_pcap_copy = tmp_pcap_cache;
-
-		/* And the systemwide pcap cache. */
-		ret = pcap_cache_replace(local_pcap_copy);
+		/* replace the systemwide pcap cache. */
+		ret = pcap_cache_replace(tmp_pcap_cache);
 		if (!ret)
 			DEBUG(0, ("failed to replace pcap cache\n"));
 
@@ -600,35 +595,22 @@ bool cups_cache_reload(struct tevent_context *ev,
 		talloc_free(cb_args);
 		return false;
 	}
-	if (!local_pcap_copy) {
-		/* We have no local cache, wait directly for
-		 * async refresh to complete.
-		 */
-		DEBUG(10,("cups_cache_reload: sync read on fd %d\n",
-			*p_pipe_fd ));
-
-		cups_async_callback(ev, NULL,
-					EVENT_FD_READ,
-					(void *)cb_args);
-		if (!local_pcap_copy) {
-			return false;
-		}
-	} else {
-		DEBUG(10,("cups_cache_reload: async read on fd %d\n",
-			*p_pipe_fd ));
-
-		/* Trigger an event when the pipe can be read. */
-		cache_fd_event = event_add_fd(ev,
-					NULL, *p_pipe_fd,
-					EVENT_FD_READ,
-					cups_async_callback,
-					(void *)cb_args);
-		if (!cache_fd_event) {
-			close(*p_pipe_fd);
-			TALLOC_FREE(cb_args);
-			return false;
-		}
+
+	DEBUG(10,("cups_cache_reload: async read on fd %d\n",
+		*p_pipe_fd ));
+
+	/* Trigger an event when the pipe can be read. */
+	cache_fd_event = event_add_fd(ev,
+				NULL, *p_pipe_fd,
+				EVENT_FD_READ,
+				cups_async_callback,
+				(void *)cb_args);
+	if (!cache_fd_event) {
+		close(*p_pipe_fd);
+		TALLOC_FREE(cb_args);
+		return false;
 	}
+
 	return true;
 }