From b1b33f7db00102de7551aaf450ca40360c012b88 Mon Sep 17 00:00:00 2001
From: Glenn Maynard <gmaynard@users.sourceforge.net>
Date: Thu, 27 May 2004 04:48:31 +0000
Subject: [PATCH] add opendir() error check to fix readdir() crash

---
 stepmania/src/RageFileDriverDirectHelpers.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/stepmania/src/RageFileDriverDirectHelpers.cpp b/stepmania/src/RageFileDriverDirectHelpers.cpp
index 67e1084612..695b99b580 100644
--- a/stepmania/src/RageFileDriverDirectHelpers.cpp
+++ b/stepmania/src/RageFileDriverDirectHelpers.cpp
@@ -282,7 +282,16 @@ void DirectFilenameDB::PopulateFileSet( FileSet &fs, const CString &path )
 		close( OldDir );
 		return;
 	}
+
 	DIR *d = opendir(".");
+	if( d == NULL )
+	{
+		LOG->MapLog("opendir " + root+"/"+sPath, "Couldn't opendir(%s%s): %s", root.c_str(), sPath.c_str(), strerror(errno) );
+		if( fchdir( OldDir ) == -1 )
+			RageException::Throw( "Couldn't fchdir(): %s", strerror(errno) );
+		close( OldDir );
+		return;
+	}
 
 	while(struct dirent *ent = readdir(d))
 	{