File ipset-6.21.1-retry_printing.patch of Package ipset.5991

From f06a022685699e608aa5e4157728f7f673aa2f89 Mon Sep 17 00:00:00 2001
From: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Date: Mon, 22 Sep 2014 07:32:38 +0200
Subject: [PATCH] Retry printing when sprintf fails (reported by Stig
 Thormodsrud)

Instead of returning the length of the string which would have been
printed, sprintf sometimes simply returns an error code. Handle
the case and flush the printing buffer and retry.
---
 lib/session.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/lib/session.c b/lib/session.c
index cbef026..da162b0 100644
--- a/lib/session.c
+++ b/lib/session.c
@@ -716,13 +716,7 @@ retry:
 			fmt, args);
 	va_end(args);
 
-	if (ret < 0) {
-		ipset_err(session,
-			 "Internal error at printing to output buffer");
-		longjmp(printf_failure, 1);
-	}
-
-	if (ret >= IPSET_OUTBUFLEN - len) {
+	if (ret < 0 || ret >= IPSET_OUTBUFLEN - len) {
 		/* Buffer was too small, push it out and retry */
 		D("print buffer and try again: %u", len);
 		if (loop++) {
@@ -750,13 +744,7 @@ retry:
 	ret = fn(session->outbuf + len, IPSET_OUTBUFLEN - len,
 		 session->data, opt, session->envopts);
 
-	if (ret < 0) {
-		ipset_err(session,
-			"Internal error at printing to output buffer");
-		longjmp(printf_failure, 1);
-	}
-
-	if (ret >= IPSET_OUTBUFLEN - len) {
+	if (ret < 0 || ret >= IPSET_OUTBUFLEN - len) {
 		/* Buffer was too small, push it out and retry */
 		D("print buffer and try again: %u", len);
 		if (loop++) {
-- 
2.12.3