1d4cc6a17b
Note that roll-forward can add more inodes to the filesystem; don't overflow the tables but reallocate them.
84 lines
3.3 KiB
C
84 lines
3.3 KiB
C
/* $NetBSD: vnode.h,v 1.2 2005/04/11 23:19:24 perseant Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Konrad E. Schroder <perseant@hhhh.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#define VNODE_HASH_MAX 1024 /* Must be a PO2 */
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#define VNODE_CACHE_SIZE 1024 /* Need not be a PO2 */
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LIST_HEAD(ubuflists, ubuf);
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LIST_HEAD(uvnodelst, uvnode);
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LIST_HEAD(vgrlst, vget_reg);
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struct uvnode {
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int v_fd;
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int (*v_strategy_op) (struct ubuf *);
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int (*v_bwrite_op) (struct ubuf *);
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int (*v_bmap_op) (struct uvnode *, daddr_t, daddr_t *);
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#define VDIROP 0x1000 /* vnode is involved in a directory op */
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#define VDIRTY 0x8000 /* vnode is dirty */
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u_int32_t v_flag;
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void *v_fs;
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void *v_data;
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#undef v_usecount
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int v_usecount;
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struct ubuflists v_cleanblkhd; /* clean blocklist head */
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struct ubuflists v_dirtyblkhd; /* dirty blocklist head */
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LIST_ENTRY(uvnode) v_mntvnodes;
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LIST_ENTRY(uvnode) v_getvnodes;
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};
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struct vget_reg {
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void *vgr_fs;
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struct uvnode *(*vgr_func) (void *, ino_t);
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LIST_ENTRY(vget_reg) vgr_list;
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};
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#define VOP_STRATEGY(bp) ((bp)->b_vp->v_strategy_op(bp))
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#define VOP_BWRITE(bp) ((bp)->b_vp->v_bwrite_op(bp))
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#define VOP_BMAP(vp, lbn, daddrp) ((vp)->v_bmap_op((vp), (lbn), (daddrp)))
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extern int fsdirty;
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extern struct uvnodelst vnodelist;
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int raw_vop_strategy(struct ubuf *);
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int raw_vop_bwrite(struct ubuf *);
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int raw_vop_bmap(struct uvnode *, daddr_t, daddr_t *);
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void vnode_destroy(struct uvnode *);
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struct uvnode *vget(void *, ino_t);
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void register_vget(void *, struct uvnode *(void *, ino_t));
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void vfs_init(void);
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