From fd2c6c56a5dd693eb3387662dcbed94d4fd4fb26 Mon Sep 17 00:00:00 2001
From: Jon Siwek <jsiwek@corelight.com>
Date: Wed, 29 Jan 2020 16:04:46 -0800
Subject: [PATCH] Add checks for failed fcntl calls

---
 src/Pipe.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Pipe.cc b/src/Pipe.cc
index f388366c5d..5a0916a3dd 100644
--- a/src/Pipe.cc
+++ b/src/Pipe.cc
@@ -24,6 +24,9 @@ static int set_flags(int fd, int flags)
 	{
 	auto rval = fcntl(fd, F_GETFD);
 
+	if ( rval == -1 )
+		pipe_fail(errno);
+
 	if ( flags )
 		{
 		rval |= flags;
@@ -39,6 +42,9 @@ static int unset_flags(int fd, int flags)
 	{
 	auto rval = fcntl(fd, F_GETFD);
 
+	if ( rval == -1 )
+		pipe_fail(errno);
+
 	if ( flags )
 		{
 		rval &= ~flags;
@@ -54,6 +60,9 @@ static int set_status_flags(int fd, int flags)
 	{
 	auto rval = fcntl(fd, F_GETFL);
 
+	if ( rval == -1 )
+		pipe_fail(errno);
+
 	if ( flags )
 		{
 		rval |= flags;