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From: "Gaël PORTAY" <gael.portay@savoirfairelinux.com>
To: barebox@lists.infradead.org
Cc: "Gaël PORTAY" <gael.portay@savoirfairelinux.com>
Subject: [PATCH 1/2] readline_simple: return -1 if getc fails
Date: Mon,  7 Aug 2017 18:10:41 -0400	[thread overview]
Message-ID: <20170807221042.19700-2-gael.portay@savoirfairelinux.com> (raw)
In-Reply-To: <20170807221042.19700-1-gael.portay@savoirfairelinux.com>

The getc function may return an errno code if an error happens.

This patch prevents readline from printing a non printable character and
from looping to infinity and beyong.

Signed-off-by: Gaël PORTAY <gael.portay@savoirfairelinux.com>
---
 lib/readline_simple.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/readline_simple.c b/lib/readline_simple.c
index c4d3d240e..1283c9602 100644
--- a/lib/readline_simple.c
+++ b/lib/readline_simple.c
@@ -58,6 +58,8 @@ int readline (const char *prompt, char *line, int len)
 
 	for (;;) {
 		c = getchar();
+		if (c < 0)
+			return (-1);
 
 		/*
 		 * Special character handling
-- 
2.13.2


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  reply	other threads:[~2017-08-07 22:11 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-07 22:10 [PATCH 0/2] " Gaël PORTAY
2017-08-07 22:10 ` Gaël PORTAY [this message]
2017-08-08  7:51   ` [PATCH 1/2] " Lucas Stach
2017-08-08 10:07     ` Ian Abbott
2017-08-08 15:21       ` Gaël PORTAY
2017-08-08 15:20     ` Gaël PORTAY
2017-08-08 15:36       ` Lucas Stach
2017-08-08 16:05         ` Ian Abbott
2017-08-08 16:49           ` Gaël PORTAY
2017-08-08 16:14         ` Gaël PORTAY
2017-08-07 22:10 ` [PATCH 2/2] readline_simple: remove obsolete documentation Gaël PORTAY

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