Missing boot loader headers.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4462 a95241bf-73f2-0310-859d-f6bbb57e9c96
2003-09-03 01:53:41 +00:00
parent f659db057c
commit 6f7c2dc677
3 changed files with 184 additions and 0 deletions
@@ -0,0 +1,83 @@
+/*
+** Copyright 2003, Axel Dörfler, [email protected]. All rights reserved.
+** Distributed under the terms of the OpenBeOS License.
+*/
+#ifndef KERNEL_BOOT_VFS_H
+#define KERNEL_BOOT_VFS_H
+
+
+#include <SupportDefs.h>
+
+#include <list.h>
+#include <boot/stage2_args.h>
+
+
+#ifdef __cplusplus
+
+/** This is the base class for all VFS nodes */
+
+class Node {
+	public:
+		Node();
+		virtual ~Node();
+
+		virtual status_t Open(void **_cookie, int mode);
+		virtual status_t Close(void *cookie);
+
+		virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize) = 0;
+		virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize) = 0;
+
+	protected:
+		list_link	fLink;
+		int32		fRefCount;
+};
+
+
+/** The console based nodes don't need cookies for I/O, they
+ *	also don't support to change the stream position.
+ *	Live is simple in the boot loader :-)
+ */
+
+class ConsoleNode : public Node {
+	public:
+		ConsoleNode();
+
+		virtual ssize_t Read(void *buffer, size_t bufferSize);
+		virtual ssize_t Write(const void *buffer, size_t bufferSize);
+};
+
+class Descriptor {
+	public:
+		Descriptor(Node *node, void *cookie);
+		~Descriptor();
+
+		ssize_t Read(off_t pos, void *buffer, size_t bufferSize);
+		ssize_t Read(void *buffer, size_t bufferSize);
+		ssize_t Write(off_t pos, const void *buffer, size_t bufferSize);
+		ssize_t Write(const void *buffer, size_t bufferSize);
+
+		off_t Offset() const { return fOffset; }
+		int32 RefCount() const { return fRefCount; }
+
+		status_t Acquire();
+		status_t Release();
+
+	private:
+		Node	*fNode;
+		void	*fCookie;
+		off_t	fOffset;
+		int32	fRefCount;
+};
+
+extern "C" {
+#endif	/* __cplusplus */
+
+extern status_t vfs_init(stage2_args *args);
+extern status_t mount_boot_file_systems();
+extern status_t add_partitions_for(int fd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* KERNEL_BOOT_VFS_H */