NetBSD-5.0.2/sys/fs/adosfs/adosfs.h
/* $NetBSD: adosfs.h,v 1.9 2008/06/28 01:34:05 rumble Exp $ */
/*
* Copyright (c) 1994 Christian E. Hopps
* Copyright (c) 1996 Matthias Scheler
* 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.
*/
#ifndef _ADOSFS_ADOSFS_H_
#define _ADOSFS_ADOSFS_H_
/*
* Arguments to mount amigados filesystems.
*/
struct adosfs_args {
char *fspec; /* blocks special holding the fs to mount */
struct export_args30 _pad1; /* compat with old userland tools */
uid_t uid; /* uid that owns adosfs files */
gid_t gid; /* gid that owns adosfs files */
mode_t mask; /* mask to be applied for adosfs perms */
};
#ifdef _KERNEL
#include <sys/mallocvar.h>
#include <miscfs/genfs/genfs_node.h>
MALLOC_DECLARE(M_ANODE);
/*
* Amigados datestamp. (from 1/1/1978 00:00:00 local)
*/
struct datestamp {
u_int32_t days;
u_int32_t mins;
u_int32_t ticks; /* 20000 * (ticks % 50) = useconds */
/* ticks / 50 = seconds */
};
enum anode_type { AROOT, ADIR, AFILE, ALDIR, ALFILE, ASLINK };
/* Maximum file/directory name */
#define ADMAXNAMELEN 30
/*
* 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 {
struct genfs_node gnode;
LIST_ENTRY(anode) link;
enum anode_type type;
char name[ADMAXNAMELEN+1]; /* (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_int32_t dostype; /* type of volume */
u_long rootb; /* root block number */
u_long secsperblk; /* sectors per block */
u_long bsize; /* size of blocks */
u_long nwords; /* size of blocks in long words */
u_long dbsize; /* data bytes per block */
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 */
u_long *bitmap; /* allocation bitmap */
u_long numblks; /* number of usable blocks */
u_long freeblks; /* number of free blocks */
};
#define VFSTOADOSFS(mp) ((struct adosfsmount *)(mp)->mnt_data)
#define IS_FFS(amp) ((amp)->dostype & 1)
#define IS_INTER(amp) (((amp)->dostype & 7) > 1)
/*
* AmigaDOS block stuff.
*/
#define BBOFF (0)
#define BPT_SHORT ((u_int32_t)2)
#define BPT_DATA ((u_int32_t)8)
#define BPT_LIST ((u_int32_t)16)
#define BST_RDIR ((u_int32_t)1)
#define BST_UDIR ((u_int32_t)2)
#define BST_SLINK ((u_int32_t)3)
#define BST_LDIR ((u_int32_t)4)
#define BST_FILE ((u_int32_t)-3)
#define BST_LFILE ((u_int32_t)-4)
#define OFS_DATA_OFFSET (24)
extern struct pool adosfs_node_pool;
/*
* utility protos
*/
#if BYTE_ORDER != BIG_ENDIAN
u_int32_t adoswordn __P((struct buf *, int));
#else
#define adoswordn(bp,wn) (*((u_int32_t *)(bp)->b_data + (wn)))
#endif
u_int32_t adoscksum __P((struct buf *, int));
int adoscaseequ __P((const u_char *, const u_char *, int, int));
int adoshash __P((const u_char *, int, int, int));
int adunixprot __P((int));
int adosfs_getblktype __P((struct adosfsmount *, struct buf *));
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((void *));
extern int (**adosfs_vnodeop_p) __P((void *));
#endif /* _KERNEL */
#endif /* _ADOSFS_ADOSFS_H_ */