vis

commit 3d393602e6db208e6de5d6fac316ac0bcd7e0f6a
parent c7db75a692b398523268f66ebae5b027434f8c91
Author: Marc André Tanner <mat@brain-dump.org>
Date:   Wed,  5 Oct 2016 20:11:13 +0200

vis: check return value of fcntl(2) call

Diffstat:
M
vis.c
 | 
7
++++---

1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/vis.c b/vis.c
@@ -1312,9 +1312,9 @@ int vis_pipe(Vis *vis, Filerange *range, bool interactive, const char *argv[],
 	close(pout[1]);
 	close(perr[1]);
 
-	fcntl(pout[0], F_SETFL, O_NONBLOCK);
-	fcntl(perr[0], F_SETFL, O_NONBLOCK);
-
+	if (fcntl(pout[0], F_SETFL, O_NONBLOCK) == -1 ||
+	    fcntl(perr[0], F_SETFL, O_NONBLOCK) == -1)
+		goto err;
 
 	fd_set rfds, wfds;
 
@@ -1393,6 +1393,7 @@ int vis_pipe(Vis *vis, Filerange *range, bool interactive, const char *argv[],
 
 	} while (pin[1] != -1 || pout[0] != -1 || perr[0] != -1);
 
+err:
 	if (pin[1] != -1)
 		close(pin[1]);
 	if (pout[0] != -1)