add umap and null fs filesystems

[unix-history] / 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  7.15 (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

#ifdef LOFS
extern  struct vfsops lofs_vfsops;
#define LOFS_VFSOPS     &lofs_vfsops
#else
#define LOFS_VFSOPS     NULL
#endif

#ifdef FDESC
extern  struct vfsops fdesc_vfsops;
#define FDESC_VFSOPS    &fdesc_vfsops
#else
#define FDESC_VFSOPS    NULL
#endif

#ifdef PORTAL
extern  struct vfsops portal_vfsops;
#define PORTAL_VFSOPS   &portal_vfsops
#else
#define PORTAL_VFSOPS   NULL
#endif

#ifdef NULLFS
extern  struct vfsops null_vfsops;
#define NULL_VFSOPS     &null_vfsops
#else
#define NULL_VFSOPS     NULL
#endif

#ifdef UMAPFS
extern  struct vfsops umap_vfsops;
#define UMAP_VFSOPS     &umap_vfsops
#else
#define UMAP_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 */
       LOFS_VFSOPS,            /* 6 = MOUNT_LOFS */
       FDESC_VFSOPS,           /* 7 = MOUNT_FDESC */
       PORTAL_VFSOPS,          /* 8 = MOUNT_PORTAL */
       NULL_VFSOPS,            /* 9 = MOUNT_NULL */
       UMAP_VFSOPS,            /* 10 = MOUNT_UMAP */
       0
};


/*
*
* vfs_opv_descs enumerates the list of vnode classes, each with it's own
* vnode operation vector.  It is consulted at system boot to build operation
* vectors.  It is NULL terminated.
*
*/
extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
extern struct vnodeopv_desc ffs_specop_opv_desc;
extern struct vnodeopv_desc ffs_fifoop_opv_desc;
extern struct vnodeopv_desc lfs_vnodeop_opv_desc;
extern struct vnodeopv_desc lfs_specop_opv_desc;
extern struct vnodeopv_desc lfs_fifoop_opv_desc;
extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
extern struct vnodeopv_desc dead_vnodeop_opv_desc;
extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
extern struct vnodeopv_desc spec_vnodeop_opv_desc;
extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
extern struct vnodeopv_desc lofs_vnodeop_opv_desc;
extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
extern struct vnodeopv_desc portal_vnodeop_opv_desc;
extern struct vnodeopv_desc null_vnodeop_opv_desc;
extern struct vnodeopv_desc umap_vnodeop_opv_desc;

struct vnodeopv_desc *vfs_opv_descs[] = {
       &ffs_vnodeop_opv_desc,
       &ffs_specop_opv_desc,
#ifdef FIFO
       &ffs_fifoop_opv_desc,
#endif
       &dead_vnodeop_opv_desc,
#ifdef FIFO
       &fifo_vnodeop_opv_desc,
#endif
       &spec_vnodeop_opv_desc,
#ifdef LFS
       &lfs_vnodeop_opv_desc,
       &lfs_specop_opv_desc,
#ifdef FIFO
       &lfs_fifoop_opv_desc,
#endif
#endif
#ifdef MFS
       &mfs_vnodeop_opv_desc,
#endif
#ifdef NFS
       &nfsv2_vnodeop_opv_desc,
       &spec_nfsv2nodeop_opv_desc,
#ifdef FIFO
       &fifo_nfsv2nodeop_opv_desc,
#endif
#endif
#ifdef LOFS
       &lofs_vnodeop_opv_desc,
#endif
#ifdef FDESC
       &fdesc_vnodeop_opv_desc,
#endif
#ifdef PORTAL
       &portal_vnodeop_opv_desc,
#endif
#ifdef NULLFS
       &null_vnodeop_opv_desc,
#endif
#ifdef UMAPFS
       &umap_vnodeop_opv_desc,
#endif
       NULL
};