From: Karel Zak <kzak@redhat.com>
Date: Thu, 17 Jul 2014 13:19:34 +0000 (+0200)
Subject: wall: add fallback for failed sysconf()
X-Git-Tag: v2.25~34
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=479912e7b3619e989413b0ed19df3855be244f7f;p=thirdparty%2Futil-linux.git

wall: add fallback for failed sysconf()

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/term-utils/wall.c b/term-utils/wall.c
index 80b8678d9a..598e9f28c5 100644
--- a/term-utils/wall.c
+++ b/term-utils/wall.c
@@ -187,6 +187,9 @@ static char *makemsg(char *fname, char **mvec, int mvecsz,
 	long line_max;
 
 	line_max = sysconf(_SC_LINE_MAX);
+	if (line_max <= 0)
+		line_max = 512;
+
 	lbuf = xmalloc(line_max);
 
 	if ((fp = xfmkstemp(&tmpname, NULL)) == NULL)