From 00da28bc3a07739175ba381dd144857e78835eea Mon Sep 17 00:00:00 2001
From: tb <>
Date: Fri, 4 Sep 2020 04:17:46 +0000
Subject: Ignore ftruncate failure with errno == EAGAIN

This makes piping the OCSP response to other programs with -o - work.

input and r+ guenther
---
 src/usr.sbin/ocspcheck/ocspcheck.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/usr.sbin/ocspcheck/ocspcheck.c b/src/usr.sbin/ocspcheck/ocspcheck.c
index ea06c128c4..d9f7104bec 100644
--- a/src/usr.sbin/ocspcheck/ocspcheck.c
+++ b/src/usr.sbin/ocspcheck/ocspcheck.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ocspcheck.c,v 1.26 2020/01/23 03:53:39 tb Exp $ */
+/* $OpenBSD: ocspcheck.c,v 1.27 2020/09/04 04:17:46 tb Exp $ */
 
 /*
  * Copyright (c) 2017 Bob Beck <beck@openbsd.org>
@@ -707,9 +707,12 @@ main(int argc, char **argv)
 	 * write out the DER format response to the staplefd
 	 */
 	if (staplefd >= 0) {
-		while (ftruncate(staplefd, 0) < 0)
+		while (ftruncate(staplefd, 0) < 0) {
+			if (errno == EINVAL)
+				break;
 			if (errno != EINTR && errno != EAGAIN)
 				err(1, "Write of OCSP response failed");
+		}
 		w = 0;
 		written = 0;
 		while (written < instaplesz) {
-- 
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