Copy Handle stuff from Atari.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38922 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/boot/platform/amiga_m68k/Handle.cpp

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2003, Axel Dörfler, [email protected]. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <SupportDefs.h>
+#include <platform/openfirmware/openfirmware.h>
+#include <util/kernel_cpp.h>
+
+#include "Handle.h"
+#include "toscalls.h"
+
+/*
+ * (X)BIOS supports char and block devices with a separate namespace
+ * for char devs handle is {DEV_PRINTER, ... DEV_CONSOLE, ...}
+ * for block devs handle is either:
+ * 		 - the partition number {0=A:, 2=C:...} in logical mode.
+ * 		 - the drive number {0=A:, 1=B:, 2=ACSI-0, 10=SCSI-0, ...} 
+ *			in phys mode (RW_NOTRANSLATE).
+ * BlockHandle is in devices.cpp
+ * 
+ * XXX: handle network devices ? not sure how TOS net extensions do this
+ * not sure it'll ever be supported anyway.
+ * XXX: BIOSDrive/BIOSHandle : public BlockHandle ?
+ */
+
+Handle::Handle(int handle)
+	:
+	fHandle(handle)
+{
+}
+
+
+Handle::Handle(void)
+	:
+	fHandle(-1)
+{
+}
+
+
+Handle::~Handle()
+{
+}
+
+
+void
+Handle::SetHandle(int handle)
+{
+	fHandle = handle;
+}
+
+
+ssize_t
+Handle::ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize)
+{
+	return B_ERROR;
+}
+
+
+ssize_t
+Handle::WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize)
+{
+	return B_ERROR;
+}
+
+
+off_t 
+Handle::Size() const
+{
+	// ToDo: fix this!
+	return 1024LL * 1024 * 1024 * 1024;
+		// 1024 GB
+}
+
+
+// #pragma mark -
+
+
+CharHandle::CharHandle(int handle)
+	: Handle(handle)
+{
+}
+
+
+CharHandle::CharHandle(void)
+	: Handle()
+{
+}
+
+
+CharHandle::~CharHandle()
+{
+}
+
+
+ssize_t
+CharHandle::ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize)
+{
+	char *string = (char *)buffer;
+	int i;
+
+
+	return bufferSize;
+}
+
+
+ssize_t
+CharHandle::WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize)
+{
+	const char *string = (const char *)buffer;
+	int i;
+
+	return bufferSize;
+}
+
+

src/system/boot/platform/amiga_m68k/Handle.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2003, Axel Dörfler, [email protected]. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef HANDLE_H
+#define HANDLE_H
+
+
+#include <boot/vfs.h>
+
+
+#ifdef __cplusplus
+
+class Handle : public ConsoleNode {
+	public:
+		Handle(int handle);
+		Handle();
+		virtual ~Handle();
+
+		void SetHandle(int handle);
+
+		virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize);
+		virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize);
+
+		virtual off_t Size() const;
+
+	protected:
+		int		fHandle;
+};
+
+/* character devices */
+class CharHandle : public Handle {
+	public:
+		CharHandle(int handle);
+		CharHandle();
+		virtual ~CharHandle();
+
+		virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize);
+		virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize);
+
+	protected:
+};
+
+/* block devices */
+/* cf. devices.cpp */
+
+#endif	/* __cplusplus */
+
+#endif	/* HANDLE_H */