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  7.13 (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

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 */
};


/*
 * Vnode_op_descs lists all vnode operations supported.
 * At boot time vfs_op_init examines this list
 * to configure vnode operations vectors.
 */

extern struct vnodeop_desc
        vop_lookup_desc,
        vop_create_desc,
        vop_mknod_desc,
        vop_open_desc,
        vop_close_desc,
        vop_access_desc,
        vop_getattr_desc,
        vop_setattr_desc,
        vop_read_desc,
        vop_write_desc,
        vop_ioctl_desc,
        vop_select_desc,
        vop_mmap_desc,
        vop_fsync_desc,
        vop_seek_desc,
        vop_remove_desc,
        vop_link_desc,
        vop_rename_desc,
        vop_mkdir_desc,
        vop_rmdir_desc,
        vop_symlink_desc,
        vop_readdir_desc,
        vop_readlink_desc,
        vop_abortop_desc,
        vop_inactive_desc,
        vop_reclaim_desc,
        vop_lock_desc,
        vop_unlock_desc,
        vop_bmap_desc,
        vop_strategy_desc,
        vop_print_desc,
        vop_islocked_desc,
        vop_advlock_desc,
        vop_blkatoff_desc,
        vop_valloc_desc,
        vop_vfree_desc,
        vop_truncate_desc,
        vop_update_desc,
        vop_bwrite_desc,
/* and the default */
        vop_default_desc;

struct vnodeop_desc *vfs_op_descs[] = {
        &vop_default_desc,   /* must be first */
        &vop_lookup_desc,
        &vop_create_desc,
        &vop_mknod_desc,
        &vop_open_desc,
        &vop_close_desc,
        &vop_access_desc,
        &vop_getattr_desc,
        &vop_setattr_desc,
        &vop_read_desc,
        &vop_write_desc,
        &vop_ioctl_desc,
        &vop_select_desc,
        &vop_mmap_desc,
        &vop_fsync_desc,
        &vop_seek_desc,
        &vop_remove_desc,
        &vop_link_desc,
        &vop_rename_desc,
        &vop_mkdir_desc,
        &vop_rmdir_desc,
        &vop_symlink_desc,
        &vop_readdir_desc,
        &vop_readlink_desc,
        &vop_abortop_desc,
        &vop_inactive_desc,
        &vop_reclaim_desc,
        &vop_lock_desc,
        &vop_unlock_desc,
        &vop_bmap_desc,
        &vop_strategy_desc,
        &vop_print_desc,
        &vop_islocked_desc,
        &vop_advlock_desc,
        &vop_blkatoff_desc,
        &vop_valloc_desc,
        &vop_vfree_desc,
        &vop_truncate_desc,
        &vop_update_desc,
        &vop_bwrite_desc,
        NULL
};


/*
 *
 * 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's also null terminated.
 *
 * Out-of-kernel, someone else (more knowlegable about what file
 * systems live in this address space) must specify this table.
 */

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;

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
        NULL
};