[PATCH v3 05/10] multipathd: make uxsock_listen() take a pointer to fd

[Martin Wilck <martin.wilck@xxxxxxxx>]

This prepares being able to pass multiple socket fds.

Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
 multipathd/main.c   |  2 +-
 multipathd/uxlsnr.c | 11 ++++++++---
 multipathd/uxlsnr.h |  3 +--
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/multipathd/main.c b/multipathd/main.c
index 5455bdf..602215c 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -1924,7 +1924,7 @@ uxlsnrloop (void * ap)
 	       == DAEMON_CONFIGURE)
 		handle_signals(false);
 
-	uxsock_listen(ux_sock, ap);
+	uxsock_listen(1, &ux_sock, ap);
 
 out_sock:
 	pthread_cleanup_pop(1); /* uxsock_cleanup */
diff --git a/multipathd/uxlsnr.c b/multipathd/uxlsnr.c
index d74bb35..79e28e4 100644
--- a/multipathd/uxlsnr.c
+++ b/multipathd/uxlsnr.c
@@ -614,7 +614,7 @@ static void handle_client(struct client *c, struct vectors *vecs, short revents)
 /*
  * entry point
  */
-void *uxsock_listen(long ux_sock, void *trigger_data)
+void *uxsock_listen(int n_socks, long *ux_sock, void *trigger_data)
 {
 	sigset_t mask;
 	int max_pfds = MIN_POLLS + POLLFDS_BASE;
@@ -623,6 +623,11 @@ void *uxsock_listen(long ux_sock, void *trigger_data)
 	struct watch_descriptors wds = { .conf_wd = -1, .dir_wd = -1, .mp_wd = -1, };
 	struct vectors *vecs = trigger_data;
 
+	if (n_socks != 1) {
+		condlog(0, "uxsock: no socket fds");
+		exit_daemon();
+		return NULL;
+	}
 	condlog(3, "uxsock: startup listener");
 	polls = calloc(1, max_pfds * sizeof(*polls));
 	if (!polls) {
@@ -673,7 +678,7 @@ void *uxsock_listen(long ux_sock, void *trigger_data)
 			}
 		}
 		if (num_clients < MAX_CLIENTS) {
-			polls[POLLFD_UX].fd = ux_sock;
+			polls[POLLFD_UX].fd = ux_sock[0];
 			polls[POLLFD_UX].events = POLLIN;
 		} else {
 			/*
@@ -767,7 +772,7 @@ void *uxsock_listen(long ux_sock, void *trigger_data)
 
 		/* see if we got a new client */
 		if (polls[POLLFD_UX].revents & POLLIN) {
-			new_client(ux_sock);
+			new_client(ux_sock[0]);
 		}
 
 		/* handle inotify events on config files */
diff --git a/multipathd/uxlsnr.h b/multipathd/uxlsnr.h
index a14a667..a331e23 100644
--- a/multipathd/uxlsnr.h
+++ b/multipathd/uxlsnr.h
@@ -5,7 +5,6 @@
 
 bool waiting_clients(void);
 void uxsock_cleanup(void *arg);
-void *uxsock_listen(long ux_sock,
-		    void * trigger_data);
+void *uxsock_listen(int n_socks, long *ux_sock, void *trigger_data);
 
 #endif
-- 
2.48.1