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/* $NetBSD: adosfs.h,v 1.8 1995/08/18 15:14:35 chopps Exp $ */
/*
* Copyright (c) 1994 Christian E. Hopps
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christian E. Hopps.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Amigados datestamp. (from 1/1/1978 00:00:00 local)
*/
struct datestamp {
u_long days;
u_long mins;
u_long ticks; /* 20000 * (ticks % 50) = useconds */
/* ticks / 50 = seconds */
};
enum anode_type { AROOT, ADIR, AFILE, ALDIR, ALFILE, ASLINK };
enum anode_flags { AWANT = 0x1, ALOCKED = 0x2 };
/*
* similar to inode's, we use to represent:
* the root dir, reg dirs, reg files and extension blocks
* note the ``tab'' is a hash table for r/d, and a data block
* table for f/e. it is always ANODETABSZ(ap) bytes in size.
*/
struct anode {
LIST_ENTRY(anode) link;
enum anode_type type;
char name[31]; /* (r/d/f) name for object */
struct datestamp mtimev; /* (r) volume modified */
struct datestamp created; /* (r) volume created */
struct datestamp mtime; /* (r/d/f) last modified */
struct adosfsmount *amp; /* owner file system */
struct vnode *vp; /* owner vnode */
u_long fsize; /* (f) size of file in bytes */
u_long block; /* block num */
u_long pblock; /* (d/f/e) parent block */
u_long hashf; /* (d/f) hash forward */
u_long extb; /* (f/e) extension block number */
u_long linkto; /* (hd/hf) header this link points at */
u_long linknext; /* (d/f/hd/hf) next link (or head) in chain */
u_long lastlindblk; /* (f/hf) last logical indirect block */
u_long lastindblk; /* (f/hf) last indirect block read */
u_long *tab; /* (r/d) hash table */
int *tabi; /* (r/d) table info */
int ntabent; /* (r/d) number of entries in table */
int nwords; /* size of blocks in long words */
int adprot; /* (d/f) amigados protection bits */
uid_t uid; /* (d/f) uid of directory/file */
gid_t gid; /* (d/f) gid of directory/file */
int flags; /* misc flags */
char *slinkto; /* name of file or dir */
};
#define VTOA(vp) ((struct anode *)(vp)->v_data)
#define ATOV(ap) ((ap)->vp)
#define ANODETABSZ(ap) (((ap)->nwords - 56) * sizeof(long))
#define ANODETABENT(ap) ((ap)->nwords - 56)
#define ANODENDATBLKENT(ap) ((ap)->nwords - 56)
/*
* mount data
*/
#define ANODEHASHSZ (512)
struct adosfsmount {
LIST_HEAD(anodechain, anode) anodetab[ANODEHASHSZ];
struct mount *mp; /* owner mount */
u_long rootb; /* root block number */
u_long startb; /* start block */
u_long endb; /* one block past last */
u_long bsize; /* size of blocks */
u_long nwords; /* size of blocks in long words */
uid_t uid; /* uid of mounting user */
gid_t gid; /* gid of mounting user */
u_long mask; /* mode mask */
struct vnode *devvp; /* blk device mounted on */
struct vnode *rootvp; /* out root vnode */
struct netexport export;
};
#define VFSTOADOSFS(mp) ((struct adosfsmount *)(mp)->mnt_data)
/*
* AmigaDOS block stuff.
*/
#define BPT_SHORT (2)
#define BPT_LIST (16)
#define BST_RDIR (1)
#define BST_UDIR (2)
#define BST_SLINK (3)
#define BST_LDIR (4)
#define BST_FILE (-3L)
#define BST_LFILE (-4L)
/*
* utility protos
*/
long adoswordn __P((struct buf *, int));
long adoscksum __P((struct buf *, long));
int adoshash __P((const char *, int, int));
struct vnode *adosfs_ahashget __P((struct mount *, ino_t));
void adosfs_ainshash __P((struct adosfsmount *, struct anode *));
void adosfs_aremhash __P((struct anode *));
int adosfs_lookup __P((struct vop_lookup_args *));
int (**adosfs_vnodeop_p)();
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