1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#define UDF_HASHTBLSIZE 100
32
33struct udf_node {
34	struct vnode	*i_vnode;
35	struct udf_mnt	*udfmp;
36	ino_t		hash_id;
37	long		diroff;
38	struct file_entry *fentry;
39};
40
41struct udf_mnt {
42	int			im_flags;
43	struct mount		*im_mountp;
44	struct g_consumer	*im_cp;
45	struct bufobj		*im_bo;
46	struct cdev *im_dev;
47	struct vnode		*im_devvp;
48	int			bsize;
49	int			bshift;
50	int			bmask;
51	uint32_t		part_start;
52	uint32_t		part_len;
53	uint64_t		root_id;
54	struct long_ad		root_icb;
55	int			p_sectors;
56	int			s_table_entries;
57	struct udf_sparing_table *s_table;
58	void			*im_d2l;	/* disk->local iconv handle */
59#if 0
60	void			*im_l2d;	/* local->disk iconv handle */
61#endif
62};
63
64struct udf_dirstream {
65	struct udf_node	*node;
66	struct udf_mnt	*udfmp;
67	struct buf	*bp;
68	uint8_t		*data;
69	uint8_t		*buf;
70	int		fsize;
71	int		off;
72	int		this_off;
73	int		offset;
74	int		size;
75	int		error;
76	int		fid_fragment;
77};
78
79struct ifid {
80	u_short	ifid_len;
81	u_short	ifid_pad;
82	int	ifid_ino;
83	long	ifid_start;
84};
85
86#define	VFSTOUDFFS(mp)	((struct udf_mnt *)((mp)->mnt_data))
87#define	VTON(vp)	((struct udf_node *)((vp)->v_data))
88
89/*
90 * The block layer refers to things in terms of 512 byte blocks by default.
91 * btodb() is expensive, so speed things up.
92 * XXX Can the block layer be forced to use a different block size?
93 */
94#define	RDSECTOR(devvp, sector, size, bp) \
95	bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp)
96
97MALLOC_DECLARE(M_UDFFENTRY);
98
99static __inline int
100udf_readdevblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp)
101{
102	return (RDSECTOR(udfmp->im_devvp, sector,
103			 (size + udfmp->bmask) & ~udfmp->bmask, bp));
104}
105
106/*
107 * Produce a suitable file number from an ICB.  The passed in ICB is expected
108 * to be in little endian (meaning that it hasn't been swapped for big
109 * endian machines yet).
110 * XXX If the fileno resolves to 0, we might be in big trouble.
111 * XXX Assumes the ICB is a long_ad.  This struct is compatible with short_ad,
112 *     but not ext_ad.
113 */
114static __inline ino_t
115udf_getid(struct long_ad *icb)
116{
117	return (le32toh(icb->loc.lb_num));
118}
119
120int udf_allocv(struct mount *, struct vnode **, struct thread *);
121int udf_checktag(struct desc_tag *, uint16_t);
122int udf_vget(struct mount *, ino_t, int, struct vnode **);
123
124extern uma_zone_t udf_zone_trans;
125extern uma_zone_t udf_zone_node;
126extern uma_zone_t udf_zone_ds;
127
128extern struct vop_vector udf_fifoops;
129