master
1/* $NetBSD: adosfs.h,v 1.13 2014/08/05 08:50:54 hannken 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 enum anode_type type;
77 char name[ADMAXNAMELEN+1]; /* (r/d/f) name for object */
78 struct datestamp mtimev; /* (r) volume modified */
79 struct datestamp created; /* (r) volume created */
80 struct datestamp mtime; /* (r/d/f) last modified */
81 struct adosfsmount *amp; /* owner file system */
82 struct vnode *vp; /* owner vnode */
83 u_long fsize; /* (f) size of file in bytes */
84 u_long block; /* block num */
85 u_long pblock; /* (d/f/e) parent block */
86 u_long hashf; /* (d/f) hash forward */
87 u_long extb; /* (f/e) extension block number */
88 u_long linkto; /* (hd/hf) header this link points at */
89 u_long linknext; /* (d/f/hd/hf) next link (or head) in chain */
90 u_long lastlindblk; /* (f/hf) last logical indirect block */
91 u_long lastindblk; /* (f/hf) last indirect block read */
92 u_long *tab; /* (r/d) hash table */
93 int *tabi; /* (r/d) table info */
94 int ntabent; /* (r/d) number of entries in table */
95 int nwords; /* size of blocks in long words */
96 int adprot; /* (d/f) amigados protection bits */
97 uid_t uid; /* (d/f) uid of directory/file */
98 gid_t gid; /* (d/f) gid of directory/file */
99 int flags; /* misc flags */
100 char *slinkto; /* name of file or dir */
101};
102#define VTOA(vp) ((struct anode *)(vp)->v_data)
103#define ATOV(ap) ((ap)->vp)
104#define ANODETABSZ(ap) (((ap)->nwords - 56) * sizeof(long))
105#define ANODETABENT(ap) ((ap)->nwords - 56)
106#define ANODENDATBLKENT(ap) ((ap)->nwords - 56)
107
108/*
109 * mount data
110 */
111#define ANODEHASHSZ (512)
112
113struct adosfsmount {
114 struct mount *mp; /* owner mount */
115 u_int32_t dostype; /* type of volume */
116 u_long rootb; /* root block number */
117 u_long bsize; /* size of blocks */
118 u_long nwords; /* size of blocks in long words */
119 u_long dbsize; /* data bytes per block */
120 uid_t uid; /* uid of mounting user */
121 gid_t gid; /* gid of mounting user */
122 u_long mask; /* mode mask */
123 struct vnode *devvp; /* blk device mounted on */
124 struct vnode *rootvp; /* out root vnode */
125 u_long *bitmap; /* allocation bitmap */
126 u_long numblks; /* number of usable blocks */
127 u_long freeblks; /* number of free blocks */
128};
129
130#define VFSTOADOSFS(mp) ((struct adosfsmount *)(mp)->mnt_data)
131
132#define IS_FFS(amp) ((amp)->dostype & 1)
133#define IS_INTER(amp) (((amp)->dostype & 7) > 1)
134
135/*
136 * AmigaDOS block stuff.
137 */
138#define BBOFF (0)
139
140#define BPT_SHORT ((u_int32_t)2)
141#define BPT_DATA ((u_int32_t)8)
142#define BPT_LIST ((u_int32_t)16)
143
144#define BST_RDIR ((u_int32_t)1)
145#define BST_UDIR ((u_int32_t)2)
146#define BST_SLINK ((u_int32_t)3)
147#define BST_LDIR ((u_int32_t)4)
148#define BST_FILE ((u_int32_t)-3)
149#define BST_LFILE ((u_int32_t)-4)
150
151#define OFS_DATA_OFFSET (24)
152
153extern struct pool adosfs_node_pool;
154
155/*
156 * utility protos
157 */
158#if BYTE_ORDER != BIG_ENDIAN
159u_int32_t adoswordn(struct buf *, int);
160#else
161#define adoswordn(bp,wn) (*((u_int32_t *)(bp)->b_data + (wn)))
162#endif
163
164u_int32_t adoscksum(struct buf *, int);
165int adoscaseequ(const u_char *, const u_char *, int, int);
166int adoshash(const u_char *, int, int, int);
167int adunixprot(int);
168int adosfs_getblktype(struct adosfsmount *, struct buf *);
169
170int adosfs_lookup(void *);
171
172extern int (**adosfs_vnodeop_p)(void *);
173
174/* Should print a vnode or the vnode-op's arguments? */
175#define advopprint(p) /* XXX */
176
177#endif /* _KERNEL */
178#endif /* _ADOSFS_ADOSFS_H_ */