usr/src/sys/kern/vfs_conf.c

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)vfs_conf.c  7.7 (Berkeley) %G%
 */

#include <sys/param.h>
#include <sys/mount.h>
#include <sys/vnode.h>

#ifdef FFS
#include <ufs/ffs/ffs_extern.h>

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

/*
 * 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.
 */
#ifdef FFS
extern  struct vfsops ufs_vfsops;
#define UFS_VFSOPS      &ufs_vfsops
#else
#define UFS_VFSOPS      NULL
#endif

#ifdef LFS
extern  struct vfsops lfs_vfsops;
#define LFS_VFSOPS      &lfs_vfsops
#else
#define LFS_VFSOPS      NULL
#endif

#ifdef MFS
extern  struct vfsops mfs_vfsops;
#define MFS_VFSOPS      &mfs_vfsops
#else
#define MFS_VFSOPS      NULL
#endif

#ifdef NFS
extern  struct vfsops nfs_vfsops;
#define NFS_VFSOPS      &nfs_vfsops
#else
#define NFS_VFSOPS      NULL
#endif

struct vfsops *vfssw[] = {
        NULL,                   /* 0 = MOUNT_NONE */
        UFS_VFSOPS,             /* 1 = MOUNT_UFS */
        NFS_VFSOPS,             /* 2 = MOUNT_NFS */
        MFS_VFSOPS,             /* 3 = MOUNT_MFS */
        NULL,                   /* 4 = MOUNT_PC */
        LFS_VFSOPS,             /* 5 = MOUNT_LFS */
};