From 29008bcfd8aa94b0d16ad2f259618200b67c42da Mon Sep 17 00:00:00 2001
From: Tyler Dauwalder <tylerdauwalder@nowhere.fake>
Date: Mon, 28 Apr 2003 22:47:29 +0000
Subject: [PATCH] Initial checkin. Currently does nothing particularly useful.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3114 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 .../kernel/file_systems/udf/Volume.cpp        | 68 +++++++++++++++++++
 src/add-ons/kernel/file_systems/udf/Volume.h  | 55 +++++++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 src/add-ons/kernel/file_systems/udf/Volume.cpp
 create mode 100644 src/add-ons/kernel/file_systems/udf/Volume.h

diff --git a/src/add-ons/kernel/file_systems/udf/Volume.cpp b/src/add-ons/kernel/file_systems/udf/Volume.cpp
new file mode 100644
index 0000000000..95982c7e8b
--- /dev/null
+++ b/src/add-ons/kernel/file_systems/udf/Volume.cpp
@@ -0,0 +1,68 @@
+//----------------------------------------------------------------------
+//  This software is part of the OpenBeOS distribution and is covered 
+//  by the OpenBeOS license.
+//
+//  Copyright (c) 2003 Tyler Dauwalder, tyler@dauwalder.net
+//  Mad props to Axel Dörfler and his BFS implementation, from which
+//  this UDF implementation draws much influence (and a little code :-P).
+//----------------------------------------------------------------------
+#include "Volume.h"
+
+#include "Block.h"
+#include "Debug.h"
+
+using namespace UDF;
+
+//----------------------------------------------------------------------
+// Volume 
+//----------------------------------------------------------------------
+
+/*! \brief Creates an unmounted volume with the given id.
+*/
+Volume::Volume(nspace_id id)
+	: fID(id)
+	, fDevice(0)
+	, fReadOnly(false)
+{
+}
+
+status_t
+Volume::Identify(int device, off_t base)
+{
+	return B_ERROR;	
+}
+
+/*! \brief Attempts to mount the given device.
+*/
+status_t
+Volume::Mount(const char *deviceName, uint32 flags)
+{
+	if (!deviceName)
+		RETURN_ERROR(B_BAD_VALUE);
+		
+	fReadOnly = flags & B_READ_ONLY;
+	
+	// Open the device, trying read only if readwrite fails
+	fDevice = open(deviceName, fReadOnly ? O_RDONLY : O_RDWR);
+	if (fDevice < B_OK && !fReadOnly) {
+		fReadOnly = true;
+		fDevice = open(deviceName, O_RDONLY);
+	}		
+	if (fDevice < B_OK)
+		RETURN_ERROR(fDevice);
+		
+	// If the device is actually a normal file, try to disable the cache
+	// for the file in the parent filesystem
+	struct stat stat;
+	status_t err = fstat(fDevice, &stat) < 0 ? B_OK : B_ERROR;
+	if (!err) {
+		if (stat.st_mode & S_IFREG && ioctl(fDevice, IOCTL_FILE_UNCACHED_IO, NULL) < 0) {
+			// Probably should die some sort of painful death here.
+		}
+	}
+	
+	// Now identify the volume
+
+	return B_ERROR;
+}
+
diff --git a/src/add-ons/kernel/file_systems/udf/Volume.h b/src/add-ons/kernel/file_systems/udf/Volume.h
new file mode 100644
index 0000000000..1f33179a7d
--- /dev/null
+++ b/src/add-ons/kernel/file_systems/udf/Volume.h
@@ -0,0 +1,55 @@
+//----------------------------------------------------------------------
+//  This software is part of the OpenBeOS distribution and is covered 
+//  by the OpenBeOS license.
+//
+//  Copyright (c) 2003 Tyler Dauwalder, tyler@dauwalder.net
+//  Mad props to Axel Dörfler and his BFS implementation, from which
+//  this UDF implementation draws much influence (and a little code :-P).
+//---------------------------------------------------------------------
+#ifndef _UDF_VOLUME_H
+#define _UDF_VOLUME_H
+
+/*! \file Volume.h
+*/
+
+#include <KernelExport.h>
+extern "C" {
+	#ifndef _IMPEXP_KERNEL
+	#	define _IMPEXP_KERNEL
+	#endif
+	
+	#include <fsproto.h>
+}
+
+#include "cpp.h"
+
+namespace UDF {
+
+class Volume {
+public:
+	Volume(nspace_id id);
+	
+	static status_t Identify(int device) { return Identify(device, 0); }
+	static status_t Identify(int device, off_t base);
+	
+	status_t Mount(const char *deviceName, uint32 flags);
+	status_t Unmount();
+	
+	nspace_id GetID() { return fID; }
+
+	const char *Name() const;
+	int Device() const { return fDevice; }
+	
+	bool IsReadOnly() const { return fReadOnly; }
+	
+	vnode_id ToVnodeID(off_t block) const { return (vnode_id)block; }
+	
+private:
+	nspace_id fID;
+	int fDevice;
+	bool fReadOnly;	
+};
+
+};	// namespace UDF
+
+#endif	// _UDF_VOLUME_H