Remove "winbindd_request" and "winbindd_response" from winbindd_cli_state

This shrinks the memory footprint of an idle client by 5592 bytes to 60 bytes
on my 32-bit box.

3 files changed, 15 insertions, 11 deletions

diff --git a/source3/winbindd/winbindd.c b/source3/winbindd/winbindd.c
index 9cc1bf27018..0a73c0ebc6c 100644
--- a/source3/winbindd/winbindd.c
+++ b/source3/winbindd/winbindd.c
@@ -531,11 +531,6 @@ static void process_request(struct winbindd_cli_state *state)
 	struct winbindd_dispatch_table *table = dispatch_table;
 	struct winbindd_async_dispatch_table *atable;
 
-	ZERO_STRUCTP(state->response);
-
-	state->response->result = WINBINDD_PENDING;
-	state->response->length = sizeof(struct winbindd_response);
-
 	state->mem_ctx = talloc_init("winbind request");
 	if (state->mem_ctx == NULL)
 		return;
@@ -570,6 +565,16 @@ static void process_request(struct winbindd_cli_state *state)
 		return;
 	}
 
+	state->response = talloc_zero(state->mem_ctx,
+				      struct winbindd_response);
+	if (state->response == NULL) {
+		DEBUG(10, ("talloc failed\n"));
+		remove_client(state);
+		return;
+	}
+	state->response->result = WINBINDD_PENDING;
+	state->response->length = sizeof(struct winbindd_response);
+
 	for (table = dispatch_table; table->fn; table++) {
 		if (state->request->cmd == table->cmd) {
 			DEBUG(10,("process_request: request fn %s\n",
@@ -709,7 +714,6 @@ static void new_connection(int listen_sock, bool privileged)
 	}
 
 	state->sock = sock;
-	state->response = &state->_response;
 
 	state->out_queue = tevent_queue_create(state, "winbind client reply");
 	if (state->out_queue == NULL) {
diff --git a/source3/winbindd/winbindd.h b/source3/winbindd/winbindd.h
index 4b4fc04d6d5..804c0afa5d7 100644
--- a/source3/winbindd/winbindd.h
+++ b/source3/winbindd/winbindd.h
@@ -58,10 +58,8 @@ struct winbindd_cli_state {
 	NTSTATUS (*recv_fn)(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 			    struct winbindd_response **presp);
 	struct winbindd_request *request;         /* Request from client */
-	struct winbindd_request _request;
 	struct tevent_queue *out_queue;
-	struct winbindd_response *response;
-	struct winbindd_response _response;        /* Respose to client */
+	struct winbindd_response *response;        /* Respose to client */
 	bool getpwent_initialized;                /* Has getpwent_state been
 						   * initialized? */
 	bool getgrent_initialized;                /* Has getgrent_state been
diff --git a/source3/winbindd/winbindd_dual.c b/source3/winbindd/winbindd_dual.c
index 3e0d956a74b..92f0d60817e 100644
--- a/source3/winbindd/winbindd_dual.c
+++ b/source3/winbindd/winbindd_dual.c
@@ -1316,6 +1316,8 @@ static bool fork_domain_child(struct winbindd_child *child)
 {
 	int fdpair[2];
 	struct winbindd_cli_state state;
+	struct winbindd_request request;
+	struct winbindd_response response;
 	struct winbindd_domain *primary_domain = NULL;
 
 	if (child->domain) {
@@ -1333,8 +1335,8 @@ static bool fork_domain_child(struct winbindd_child *child)
 
 	ZERO_STRUCT(state);
 	state.pid = sys_getpid();
-	state.request = &state._request;
-	state.response = &state._response;
+	state.request = &request;
+	state.response = &response;
 
 	child->pid = sys_fork();