From c219bd79099b10529c6561e5130b2ef1c3b86cb2 Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Tue, 7 Nov 2017 15:06:46 +0100
Subject: readlin: check if buffer is too small

---
 lr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'lr.c')

diff --git a/lr.c b/lr.c
index 4d897b8..23dd6b6 100644
--- a/lr.c
+++ b/lr.c
@@ -897,8 +897,8 @@ static const char *
 readlin(const char *p, const char *alt)
 {
 	static char b[PATH_MAX];
-	int r = readlink(p, b, sizeof b - 1);
-	if (r < 0)
+	ssize_t r = readlink(p, b, sizeof b - 1);
+	if (r < 0 || (size_t)r >= sizeof b - 1)
 		return alt;
 	b[r] = 0;
 	return b;
-- 
cgit 1.4.1