From 1f107ce6bdadbe7ce9069974236c874984fa364e Mon Sep 17 00:00:00 2001
From: Erik Jonsson Thoren <thecopy@gmail.com>
Date: Tue, 23 Jun 2015 13:09:10 +0200
Subject: [PATCH] Pass NULL pointer as second argument to realpath to get
 pointer to the path. Avoids buffer overflow error. This is standard behavior
 as of POSIX 2008

---
 src/utilities.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/utilities.c b/src/utilities.c
index 61b4f85..cd4d817 100644
--- a/src/utilities.c
+++ b/src/utilities.c
@@ -301,7 +301,7 @@ IOR_offset_t StringToBytes(char *size_str)
 void ShowFileSystemSize(char *fileSystem)
 {
 #ifndef _WIN32                  /* FIXME */
-        char realPath[PATH_MAX];
+        char *realPath;
         char *fileSystemUnitStr;
         long long int totalFileSystemSize;
         long long int freeFileSystemSize;
@@ -352,7 +352,8 @@ void ShowFileSystemSize(char *fileSystem)
             (1 - ((double)freeInodes / (double)totalInodes)) * 100;
 
         /* show results */
-        if (realpath(fileSystem, realPath) == NULL) {
+	realPath = realpath(fileSystem, NULL);
+        if (realPath == NULL) {
                 ERR("unable to use realpath()");
         }
         fprintf(stdout, "Path: %s\n", realPath);