sbin/fsck_lfs/vnode.h

   1 /* $NetBSD: vnode.h,v 1.3 2007/10/10 20:42:20 ad Exp $ */
   2 /*-
   3  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   4  * All rights reserved.
   5  *
   6  * This code is derived from software contributed to The NetBSD Foundation
   7  * by Konrad E. Schroder <perseant@hhhh.org>.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #define VNODE_HASH_MAX   1024 /* Must be a PO2 */
  32 #define VNODE_CACHE_SIZE 1024 /* Need not be a PO2 */
  33
  34 LIST_HEAD(ubuflists, ubuf);
  35 LIST_HEAD(uvnodelst, uvnode);
  36 LIST_HEAD(vgrlst,    vget_reg);
  37
  38 struct uvnode {
  39         int v_fd;
  40         int (*v_strategy_op) (struct ubuf *);
  41         int (*v_bwrite_op) (struct ubuf *);
  42         int (*v_bmap_op) (struct uvnode *, daddr_t, daddr_t *);
  43         u_int32_t v_uflag;
  44         void *v_fs;
  45         void *v_data;
  46 #undef v_usecount
  47         int v_usecount;
  48         struct ubuflists v_cleanblkhd;  /* clean blocklist head */
  49         struct ubuflists v_dirtyblkhd;  /* dirty blocklist head */
  50         LIST_ENTRY(uvnode) v_mntvnodes;
  51         LIST_ENTRY(uvnode) v_getvnodes;
  52 };
  53
  54 struct vget_reg {
  55         void *vgr_fs;
  56         struct uvnode *(*vgr_func) (void *, ino_t);
  57         LIST_ENTRY(vget_reg) vgr_list;
  58 };
  59
  60 #define VOP_STRATEGY(bp)          ((bp)->b_vp->v_strategy_op(bp))
  61 #define VOP_BWRITE(bp)            ((bp)->b_vp->v_bwrite_op(bp))
  62 #define VOP_BMAP(vp, lbn, daddrp) ((vp)->v_bmap_op((vp), (lbn), (daddrp)))
  63
  64 extern int fsdirty;
  65 extern struct uvnodelst vnodelist;
  66
  67 int raw_vop_strategy(struct ubuf *);
  68 int raw_vop_bwrite(struct ubuf *);
  69 int raw_vop_bmap(struct uvnode *, daddr_t, daddr_t *);
  70
  71 void vnode_destroy(struct uvnode *);
  72 struct uvnode *vget(void *, ino_t);
  73 void register_vget(void *, struct uvnode *(void *, ino_t));
  74 void vfs_init(void);