add memory filesystem initialization

[unix-history] / usr / src / sys / kern / vfs_conf.c

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)vfs_conf.c	7.1 (Berkeley) %G%
 */

#include "param.h"
#include "mount.h"

/*
 * This specifies the filesystem used to mount the root.
 * This specification should be done by /etc/config.
 */
extern int ufs_mountroot();
int (*mountroot)() = ufs_mountroot;

/*
 * These define the root filesystem and device.
 */
struct mount *rootfs;
struct vnode *rootdir;

/*
 * Set up the filesystem operations for vnodes.
 * The types are defined in mount.h.
 */
extern	struct vfsops ufs_vfsops;

#ifdef NFS
extern	struct vfsops nfs_vfsops;
#endif

struct vfsops *vfssw[] = {
	(struct vfsops *)0,	/* 0 = MOUNT_NONE */
	&ufs_vfsops,		/* 1 = MOUNT_UFS */
#ifdef NFS
	&nfs_vfsops,		/* 2 = MOUNT_NFS */
#else
	(struct vfsops *)0,
#endif
	(struct vfsops *)0,	/* 3 = MOUNT_PC */
};