From: Marek Vavruša <marek.vavrusa@nic.cz>
Date: Tue, 21 Jul 2015 12:29:54 +0000 (+0200)
Subject: daemon/main: added check for dupfd
X-Git-Tag: v1.0.0-beta1~71
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=693f1c9f59a15f0e8cffd8f2c9a1d17c05f49ac9;p=thirdparty%2Fknot-resolver.git

daemon/main: added check for dupfd

fixed CID#125374
---

diff --git a/daemon/main.c b/daemon/main.c
index 5f4d9fff6..f64bf8e2f 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -49,7 +49,10 @@ static void tty_read(uv_stream_t *stream, ssize_t nread, const uv_buf_t *buf)
 			uv_close((uv_handle_t *)stream, (uv_close_cb) free);
 			return;
 		}
-		out = outerr = fdopen(dup(stream_fd), "w");
+		uv_os_fd_t dup_fd = dup(stream_fd);
+		if (dup_fd >= 0) {
+			out = outerr = fdopen(dup(stream_fd), "w");
+		}
 	}
 	/* Execute */
 	if (stream && buf && nread > 0) {