From 75a46d2b2e6f3121852e508554dee8aac491bd99 Mon Sep 17 00:00:00 2001
From: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Date: Wed, 6 Sep 2023 08:54:51 +1000
Subject: [PATCH] Add add  a timeout to the event_loop in sync.c

This timeout can be used to cancel async connect attempts to
a remote target.

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
---
 lib/sync.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lib/sync.c b/lib/sync.c
index 62ce32bb..abbae9eb 100644
--- a/lib/sync.c
+++ b/lib/sync.c
@@ -54,11 +54,27 @@ static void
 event_loop(struct iscsi_context *iscsi, struct iscsi_sync_state *state)
 {
         struct pollfd pfd;
+	int scsi_timeout;
 	int ret;
+	time_t t;
 
+        if (iscsi->scsi_timeout) {
+		scsi_timeout = time(NULL) + iscsi->scsi_timeout;
+	} else {
+		scsi_timeout = 0;
+	}
+                
 	while (state->finished == 0) {
 		short revents;
 
+                if (scsi_timeout) {
+                        t = time(NULL);
+                        if (t > scsi_timeout) {
+                                iscsi_set_error(iscsi, "Connect timedout");
+                                state->status = -1;
+                                return;
+                        }
+                }
 		pfd.fd = iscsi_get_fd(iscsi);
 		pfd.events = iscsi_which_events(iscsi);