From 941ffd2aed35c05346c1c77ab3cbfcc75b8e494a Mon Sep 17 00:00:00 2001
From: sin <sin@2f30.org>
Date: Fri, 27 Jun 2014 11:47:03 +0100
Subject: [PATCH] Bail out on path truncation

---
 switch_root.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/switch_root.c b/switch_root.c
index 49a49e7..7500f8f 100644
--- a/switch_root.c
+++ b/switch_root.c
@@ -36,8 +36,10 @@ delete_content(const char *dir, dev_t curdevice)
 					continue;
 
 				/* build path and dive deeper */
-				strlcat(path, dir, sizeof(path));
-				strlcat(path, dent->d_name, sizeof(path));
+				if (strlcat(path, dir, sizeof(path)) >= sizeof(path))
+					eprintf("path too long\n");
+				if (strlcat(path, dent->d_name, sizeof(path)) >= sizeof(path))
+					eprintf("path too long\n");
 
 				delete_content(path, curdevice);
 				path[0] = 0;