From: Guus Sliepen <guus@tinc-vpn.org>
Date: Wed, 4 Nov 2009 15:18:08 +0000 (+0100)
Subject: Don't enable device events when there is no valid filedescriptor.
X-Git-Tag: import-tinc-1.1~583
X-Git-Url: https://git.meshlink.io/?a=commitdiff_plain;h=37ccb325af5c7865eb16716780121a8a6dce8abd;p=meshlink

Don't enable device events when there is no valid filedescriptor.
---

diff --git a/src/net_setup.c b/src/net_setup.c
index de2d0fea..c643449b 100644
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -349,12 +349,14 @@ bool setup_myself(void) {
 	if(!setup_device())
 		return false;
 
-	event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL);
+	if(device_fd >= 0) {
+		event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL);
 
-	if (event_add(&device_ev, NULL) < 0) {
-		logger(LOG_ERR, "event_add failed: %s", strerror(errno));
-		close_device();
-		return false;
+		if (event_add(&device_ev, NULL) < 0) {
+			logger(LOG_ERR, "event_add failed: %s", strerror(errno));
+			close_device();
+			return false;
+		}
 	}
 
 	/* Run tinc-up script to further initialize the tap interface */