Initial commit

tasks/fs0/include/fs.h

@@ -0,0 +1,90 @@
+/*
+ * VFS definitions.
+ *
+ * Copyright (C) 2007 Bahadir Balban.
+ */
+#ifndef __FS_H__
+#define __FS_H__
+#include <l4/lib/list.h>
+
+typedef void (*dentry_op_t)(void);
+typedef void (*superblock_op_t)(void);
+typedef void (*vnode_op_t)(void);
+typedef void (*file_op_t)(void);
+
+struct dentry_ops {
+	dentry_op_t compare;
+};
+
+struct file_ops {
+	file_op_t open;
+	file_op_t read;
+	file_op_t write;
+	file_op_t close;
+	file_op_t mmap;
+	file_op_t seek;
+	file_op_t flush;
+	file_op_t fsync;
+};
+
+struct vnode_ops {
+	vnode_op_t create;
+	vnode_op_t lookup;
+	vnode_op_t link;
+	vnode_op_t unlink;
+	vnode_op_t mkdir;
+	vnode_op_t rmdir;
+	vnode_op_t rename;
+	vnode_op_t getattr;
+	vnode_op_t setattr;
+};
+
+struct superblock_ops {
+	superblock_op_t read_sb;
+	superblock_op_t write_sb;
+	superblock_op_t read_vnode;
+	superblock_op_t write_vnode;
+};
+
+struct dentry;
+struct file;
+struct filesystem;
+struct superblock;
+struct vnode;
+
+struct dentry {
+	int refcnt;
+	char name[512];
+	struct dentry *parent;		/* Parent dentry */
+	struct list_head siblings;	/* List of dentries with same parent */
+	struct vnode *vnode;		/* The vnode associated with dirent */
+	struct dentry_ops ops;
+};
+
+struct file {
+	int refcnt;
+	struct dentry *dentry;
+	struct file_ops ops;
+};
+
+struct vnode {
+	unsigned long id;		/* Filesystem-wide unique vnode id */
+	int refcnt;			/* Reference counter */
+	struct vnode_ops ops;		/* Operations on this vnode */
+	struct list_head dirents;	/* Dirents that refer to this vnode */
+	struct list_head state_list;	/* List for vnode's dirty/clean state */
+	unsigned long size;		/* Total size of vnode in bytes */
+};
+
+struct filesystem {
+	unsigned long magic;
+	char name[256];
+};
+
+struct superblock {
+	struct filesystem fs;
+	struct superblock_ops ops;
+	struct dentry *root_dirent;
+};
+
+#endif /* __FS_H__ */