From d6127ee7dd07b06c6fc43ea0c4a67016dcf14b61 Mon Sep 17 00:00:00 2001
From: Mark Cannon <vyhdycokio@gmail.com>
Date: Thu, 7 Oct 2010 03:31:20 +0000
Subject: [PATCH] added read-only direct file driver, re-derived crypto drivers
 off of it

git-svn-id: https://openitg.svn.sourceforge.net/svnroot/openitg/branches/dev@854 83fadc84-e282-4d84-a09a-c4228d6ae7e5
---
 src/RageFileDriver.h                  |  2 +-
 src/RageFileDriverDirect.cpp          | 19 +++++++++++++++++++
 src/RageFileDriverDirect.h            |  9 +++++++++
 src/StepMania.cpp                     |  2 +-
 src/arch/ArchHooks/ArchHooks_Unix.cpp |  4 ++--
 5 files changed, 32 insertions(+), 4 deletions(-)

diff --git a/src/RageFileDriver.h b/src/RageFileDriver.h
index 39e1f7b5..22eab6eb 100755
--- a/src/RageFileDriver.h
+++ b/src/RageFileDriver.h
@@ -10,7 +10,7 @@
 	{	\
 		FileDriverEntry_##name(): FileDriverEntry( type ) { } \
 		RageFileDriver *Create( const CString &sRoot ) const { return new RageFileDriver##name( sRoot ); } \
-	} const g_RegisterDriver;
+	} const g_Register##name##Driver;
 
 class RageFileBasic;
 class FilenameDB;
diff --git a/src/RageFileDriverDirect.cpp b/src/RageFileDriverDirect.cpp
index fe216d82..a3bb269f 100755
--- a/src/RageFileDriverDirect.cpp
+++ b/src/RageFileDriverDirect.cpp
@@ -21,6 +21,7 @@
 #endif
 
 REGISTER_FILE_DRIVER( Direct, "DIR" );
+REGISTER_FILE_DRIVER( DirectReadOnly, "DIRRO" );
 
 // 64 KB buffer
 static const unsigned int BUFFER_SIZE = 1024*64;
@@ -124,6 +125,24 @@ bool RageFileDriverDirect::Remove( const CString &sPath_ )
 	}
 }
 
+/* The DIRRO driver is just like DIR, except writes are disallowed. */
+RageFileDriverDirectReadOnly::RageFileDriverDirectReadOnly( const CString &sRoot ) :
+	RageFileDriverDirect( sRoot ) { }
+
+RageFileBasic *RageFileDriverDirectReadOnly::Open( const CString &sPath, int iMode, int &iError )
+{
+	if( iMode & RageFile::WRITE )
+	{
+		iError = EROFS;
+		return NULL;
+	}
+
+	return RageFileDriverDirect::Open( sPath, iMode, iError );
+}
+bool RageFileDriverDirectReadOnly::Move( const CString &sOldPath, const CString &sNewPath ) { return false; }
+bool RageFileDriverDirectReadOnly::Remove( const CString &sPath ) { return false; }
+
+
 bool RageFileObjDirect::OpenInternal( const CString &sPath, int iMode, int &iError )
 {
 	m_sPath = sPath;
diff --git a/src/RageFileDriverDirect.h b/src/RageFileDriverDirect.h
index efa45cec..3f86e210 100755
--- a/src/RageFileDriverDirect.h
+++ b/src/RageFileDriverDirect.h
@@ -60,6 +60,15 @@ protected:
 	CString m_sRoot;
 };
 
+class RageFileDriverDirectReadOnly: public RageFileDriverDirect
+{
+public:
+	RageFileDriverDirectReadOnly( const CString &sRoot );
+	RageFileBasic *Open( const CString &sPath, int iMode, int &iError );
+	bool Move( const CString &sOldPath, const CString &sNewPath );
+	bool Remove( const CString &sPath );
+};
+
 #endif
 
 /*
diff --git a/src/StepMania.cpp b/src/StepMania.cpp
index 07c6aeeb..63e1c0d6 100755
--- a/src/StepMania.cpp
+++ b/src/StepMania.cpp
@@ -1058,7 +1058,7 @@ int main(int argc, char* argv[])
 	if( IsADirectory(PATCH_DATA_DIR) )
 	{
 		LOG->Info( "VFS: mounting Data/patch/patch/." );
-		FILEMAN->Mount( "dir", PATCH_DATA_DIR, "/", false );
+		FILEMAN->Mount( "dirro", PATCH_DATA_DIR, "/", false );
 	}
 	else if( IsAFile(PATCH_FILE) )
 	{
diff --git a/src/arch/ArchHooks/ArchHooks_Unix.cpp b/src/arch/ArchHooks/ArchHooks_Unix.cpp
index 46380415..025e2e9a 100755
--- a/src/arch/ArchHooks/ArchHooks_Unix.cpp
+++ b/src/arch/ArchHooks/ArchHooks_Unix.cpp
@@ -56,11 +56,11 @@ void ArchHooks_Unix::MountInitialFilesystems( const CString &sDirOfExecutable )
 {
 	/* Mount the root filesystem, so we can read files in /proc, /etc, and so on.
 	 * This is /rootfs, not /root, to avoid confusion with root's home directory. */
-	FILEMAN->Mount( "dir", "/", "/rootfs" );
+	FILEMAN->Mount( "dirro", "/", "/rootfs" );
 
 	/* Mount /proc, so Alsa9Buf::GetSoundCardDebugInfo() and others can access it.
 	 * (Deprecated; use rootfs.) */
-	FILEMAN->Mount( "dir", "/proc", "/proc" );
+	FILEMAN->Mount( "dirro", "/proc", "/proc" );
 
 	/* FileDB cannot accept relative paths, so Root must be absolute */
 	/* using DirOfExecutable for now  --infamouspat */
-- 
2.11.0