1/*	$NetBSD: adosfs.h,v 1.10 2009/03/14 14:46:09 dsl Exp $	*/
2
3/*
4 * Copyright (c) 1994 Christian E. Hopps
5 * Copyright (c) 1996 Matthias Scheler
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *      This product includes software developed by Christian E. Hopps.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef _ADOSFS_ADOSFS_H_
35#define  _ADOSFS_ADOSFS_H_
36/*
37 * Arguments to mount amigados filesystems.
38 */
39struct adosfs_args {
40	char	*fspec;		/* blocks special holding the fs to mount */
41	struct	export_args30 _pad1; /* compat with old userland tools */
42	uid_t	uid;		/* uid that owns adosfs files */
43	gid_t	gid;		/* gid that owns adosfs files */
44	mode_t	mask;		/* mask to be applied for adosfs perms */
45};
46
47#ifdef _KERNEL
48#include <sys/mallocvar.h>
49#include <miscfs/genfs/genfs_node.h>
50
51MALLOC_DECLARE(M_ANODE);
52
53/*
54 * Amigados datestamp. (from 1/1/1978 00:00:00 local)
55 */
56struct datestamp {
57	u_int32_t days;
58	u_int32_t mins;
59	u_int32_t ticks;	/* 20000 * (ticks % 50) = useconds */
60				/* ticks / 50 = seconds */
61};
62
63enum anode_type { AROOT, ADIR, AFILE, ALDIR, ALFILE, ASLINK };
64
65/* Maximum file/directory name */
66#define ADMAXNAMELEN		30
67
68/*
69 * similar to inode's, we use to represent:
70 * the root dir, reg dirs, reg files and extension blocks
71 * note the ``tab'' is a hash table for r/d, and a data block
72 * table for f/e. it is always ANODETABSZ(ap) bytes in size.
73 */
74struct anode {
75	struct genfs_node gnode;
76	LIST_ENTRY(anode) link;
77	enum anode_type type;
78	char name[ADMAXNAMELEN+1];	/* (r/d/f) name for object */
79	struct datestamp mtimev;	/* (r) volume modified */
80	struct datestamp created;	/* (r) volume created */
81	struct datestamp mtime;	/* (r/d/f) last modified */
82	struct adosfsmount *amp;	/* owner file system */
83	struct vnode *vp;	/* owner vnode */
84	u_long fsize;		/* (f) size of file in bytes */
85	u_long block;		/* block num */
86	u_long pblock;		/* (d/f/e) parent block */
87	u_long hashf;		/* (d/f) hash forward */
88	u_long extb;		/* (f/e) extension block number */
89	u_long linkto;		/* (hd/hf) header this link points at */
90	u_long linknext;	/* (d/f/hd/hf) next link (or head) in chain */
91	u_long lastlindblk;	/* (f/hf) last logical indirect block */
92	u_long lastindblk;	/* (f/hf) last indirect block read */
93	u_long *tab;		/* (r/d) hash table */
94	int *tabi;		/* (r/d) table info */
95	int ntabent;		/* (r/d) number of entries in table */
96	int nwords;		/* size of blocks in long words */
97	int adprot;		/* (d/f) amigados protection bits */
98	uid_t  uid;		/* (d/f) uid of directory/file */
99	gid_t  gid;		/* (d/f) gid of directory/file */
100	int flags;		/* misc flags */
101	char *slinkto;		/* name of file or dir */
102};
103#define VTOA(vp)		((struct anode *)(vp)->v_data)
104#define ATOV(ap)		((ap)->vp)
105#define ANODETABSZ(ap)		(((ap)->nwords - 56) * sizeof(long))
106#define ANODETABENT(ap)		((ap)->nwords - 56)
107#define ANODENDATBLKENT(ap)	((ap)->nwords - 56)
108
109/*
110 * mount data
111 */
112#define ANODEHASHSZ (512)
113
114struct adosfsmount {
115	LIST_HEAD(anodechain, anode) anodetab[ANODEHASHSZ];
116	struct mount *mp;	/* owner mount */
117	u_int32_t dostype;	/* type of volume */
118	u_long rootb;		/* root block number */
119	u_long secsperblk;	/* sectors per block */
120	u_long bsize;		/* size of blocks */
121	u_long nwords;		/* size of blocks in long words */
122	u_long dbsize;		/* data bytes per block */
123	uid_t  uid;		/* uid of mounting user */
124	gid_t  gid;		/* gid of mounting user */
125	u_long mask;		/* mode mask */
126	struct vnode *devvp;	/* blk device mounted on */
127	struct vnode *rootvp;	/* out root vnode */
128	u_long *bitmap;		/* allocation bitmap */
129	u_long numblks;		/* number of usable blocks */
130	u_long freeblks;	/* number of free blocks */
131};
132
133#define VFSTOADOSFS(mp) ((struct adosfsmount *)(mp)->mnt_data)
134
135#define IS_FFS(amp)	((amp)->dostype & 1)
136#define IS_INTER(amp)	(((amp)->dostype & 7) > 1)
137
138/*
139 * AmigaDOS block stuff.
140 */
141#define BBOFF		(0)
142
143#define BPT_SHORT	((u_int32_t)2)
144#define BPT_DATA	((u_int32_t)8)
145#define BPT_LIST	((u_int32_t)16)
146
147#define BST_RDIR	((u_int32_t)1)
148#define BST_UDIR	((u_int32_t)2)
149#define BST_SLINK	((u_int32_t)3)
150#define BST_LDIR	((u_int32_t)4)
151#define BST_FILE	((u_int32_t)-3)
152#define BST_LFILE	((u_int32_t)-4)
153
154#define	OFS_DATA_OFFSET	(24)
155
156extern struct pool adosfs_node_pool;
157
158/*
159 * utility protos
160 */
161#if BYTE_ORDER != BIG_ENDIAN
162u_int32_t adoswordn(struct buf *, int);
163#else
164#define adoswordn(bp,wn) (*((u_int32_t *)(bp)->b_data + (wn)))
165#endif
166
167u_int32_t adoscksum(struct buf *, int);
168int adoscaseequ(const u_char *, const u_char *, int, int);
169int adoshash(const u_char *, int, int, int);
170int adunixprot(int);
171int adosfs_getblktype(struct adosfsmount *, struct buf *);
172
173struct vnode *adosfs_ahashget(struct mount *, ino_t);
174void adosfs_ainshash(struct adosfsmount *, struct anode *);
175void adosfs_aremhash(struct anode *);
176
177int adosfs_lookup(void *);
178
179extern int (**adosfs_vnodeop_p)(void *);
180
181/* Should print a vnode or the vnode-op's arguments? */
182#define advopprint(p) /* XXX */
183
184#endif /* _KERNEL */
185#endif /* _ADOSFS_ADOSFS_H_ */
186