From: Karel Zak <kzak@redhat.com>
Date: Fri, 18 Mar 2011 08:52:07 +0000 (+0100)
Subject: tailf: support --lines 0
X-Git-Tag: v2.20-rc1~431
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=127b12dcf6bd1a150fa2ebdec3161fcddab9ada6;p=thirdparty%2Futil-linux.git

tailf: support --lines 0

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

diff --git a/text-utils/tailf.c b/text-utils/tailf.c
index 0b99a1ae69..fbe81c89de 100644
--- a/text-utils/tailf.c
+++ b/text-utils/tailf.c
@@ -60,7 +60,7 @@ tailf(const char *filename, int lines)
 	if (!(str = fopen(filename, "r")))
 		err(EXIT_FAILURE, _("cannot open \"%s\" for read"), filename);
 
-	buf = xmalloc(lines * BUFSIZ);
+	buf = xmalloc((lines ? lines : 1) * BUFSIZ);
 	p = buf;
 	while (fgets(p, BUFSIZ, str)) {
 		if (++tail >= lines) {