132 lines
4.7 KiB
C
132 lines
4.7 KiB
C
/* $NetBSD: adosfs.h,v 1.5 1994/07/11 05:07:38 chopps Exp $ */
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/*
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* Copyright (c) 1994 Christian E. Hopps
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* All rights reserved.
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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 Christian E. Hopps.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Amigados datestamp. (from 1/1/1978 00:00:00 local)
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*/
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struct datestamp {
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u_long days;
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u_long mins;
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u_long ticks; /* 20000 * (ticks % 50) = useconds */
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/* ticks / 50 = seconds */
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};
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enum anode_type { AROOT, ADIR, AFILE, ALDIR, ALFILE, ASLINK };
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enum anode_flags { AWANT = 0x1, ALOCKED = 0x2 };
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/*
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* similar to inode's, we use to represent:
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* the root dir, reg dirs, reg files and extension blocks
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* note the ``tab'' is a hash table for r/d, and a data block
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* table for f/e. it is always ANODETABSZ(ap) bytes in size.
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*/
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struct anode {
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LIST_ENTRY(anode) link;
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enum anode_type type;
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char name[31]; /* (r/d/f) name for object */
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struct datestamp mtimev; /* (r) volume modified */
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struct datestamp created; /* (r) volume created */
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struct datestamp mtime; /* (r/d/f) last modified */
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struct amount *amp; /* owner file system */
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struct vnode *vp; /* owner vnode */
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u_long fsize; /* (f) size of file in bytes */
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u_long block; /* block num */
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u_long pblock; /* (d/f/e) parent block */
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u_long hashf; /* (d/f) hash forward */
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u_long extb; /* (f/e) extension block number */
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u_long linkto; /* (hd/hf) header this link points at */
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u_long linknext; /* (d/f/hd/hf) next link (or head) in chain */
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u_long lastlindblk; /* (f/hf) last logical indirect block */
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u_long lastindblk; /* (f/hf) last indirect block read */
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u_long *tab; /* (r/d) hash table */
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int *tabi; /* (r/d) table info */
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int ntabent; /* (r/d) number of entries in table */
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int nwords; /* size of blocks in long words */
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int adprot; /* (d/f) amigados protection bits */
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int flags; /* misc flags */
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char *slinkto; /* name of file or dir */
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};
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#define VTOA(vp) ((struct anode *)(vp)->v_data)
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#define ATOV(ap) ((ap)->vp)
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#define ANODETABSZ(ap) (((ap)->nwords - 56) * sizeof(long))
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#define ANODETABENT(ap) ((ap)->nwords - 56)
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#define ANODENDATBLKENT(ap) ((ap)->nwords - 56)
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/*
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* mount data
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*/
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#define ANODEHASHSZ (512)
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struct amount {
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LIST_HEAD(anodechain, anode) anodetab[ANODEHASHSZ];
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struct mount *mp; /* owner mount */
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u_long rootb; /* root block number */
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u_long startb; /* start block */
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u_long endb; /* one block past last */
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u_long bsize; /* size of blocks */
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u_long nwords; /* size of blocks in long words */
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uid_t uid; /* uid of mounting user */
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gid_t gid; /* gid of mounting user */
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u_long mask; /* mode mask */
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struct vnode *devvp; /* blk device mounted on */
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struct vnode *rootvp; /* out root vnode */
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};
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#define VFSTOADOSFS(mp) ((struct amount *)(mp)->mnt_data)
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/*
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* AmigaDOS block stuff.
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*/
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#define BPT_SHORT (2)
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#define BPT_LIST (16)
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#define BST_RDIR (1)
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#define BST_UDIR (2)
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#define BST_SLINK (3)
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#define BST_LDIR (4)
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#define BST_FILE (-3L)
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#define BST_LFILE (-4L)
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/*
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* utility protos
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*/
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long adoswordn __P((struct buf *, int));
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long adoscksum __P((struct buf *, long));
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int adoshash __P((const char *, int, int));
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struct vnode *adosfs_ahashget __P((struct mount *, ino_t));
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void adosfs_ainshash __P((struct amount *, struct anode *));
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void adosfs_aremhash __P((struct anode *));
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int adosfs_lookup __P((struct vop_lookup_args *));
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int (**adosfs_vnodeop_p)();
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