cd9660_node.h revision 22521 
1/*-
2 * Copyright (c) 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley
6 * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
7 * Support code is derived from software contributed to Berkeley
8 * by Atsushi Murai (amurai@spec.co.jp).
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 *	@(#)cd9660_node.h	8.6 (Berkeley) 5/14/95
39 * $FreeBSD: head/sys/fs/cd9660/cd9660_node.h 22521 1997-02-10 02:22:35Z dyson $
40 */
41
42/*
43 * Theoretically, directories can be more than 2Gb in length,
44 * however, in practice this seems unlikely. So, we define
45 * the type doff_t as a long to keep down the cost of doing
46 * lookup on a 32-bit machine. If you are porting to a 64-bit
47 * architecture, you should make doff_t the same as off_t.
48 */
49#define doff_t	long
50
51typedef	struct	{
52	struct timespec	iso_atime;	/* time of last access */
53	struct timespec	iso_mtime;	/* time of last modification */
54	struct timespec	iso_ctime;	/* time file changed */
55	u_short		iso_mode;	/* files access mode and type */
56	uid_t		iso_uid;	/* owner user id */
57	gid_t		iso_gid;	/* owner group id */
58	short		iso_links;	/* links of file */
59	dev_t		iso_rdev;	/* Major/Minor number for special */
60} ISO_RRIP_INODE;
61
62#ifdef ISODEVMAP
63/*
64 * FOr device# (major,minor) translation table
65 */
66struct iso_dnode {
67	struct iso_dnode *d_next, **d_prev;	/* hash chain */
68	dev_t		i_dev;		/* device where dnode resides */
69	ino_t		i_number;	/* the identity of the inode */
70	dev_t		d_dev;		/* device # for translation */
71};
72#endif
73
74struct iso_node {
75	struct	iso_node *i_next, **i_prev;	/* hash chain */
76	struct	vnode *i_vnode;	/* vnode associated with this inode */
77	struct	vnode *i_devvp;	/* vnode for block I/O */
78	u_long	i_flag;		/* see below */
79	dev_t	i_dev;		/* device where inode resides */
80	ino_t	i_number;	/* the identity of the inode */
81				/* we use the actual starting block of the file */
82	struct	iso_mnt *i_mnt;	/* filesystem associated with this inode */
83	struct	lockf *i_lockf;	/* head of byte-level lock list */
84	doff_t	i_endoff;	/* end of useful stuff in directory */
85	doff_t	i_diroff;	/* offset in dir, where we found last entry */
86	doff_t	i_offset;	/* offset of free space in directory */
87	ino_t	i_ino;		/* inode number of found directory */
88	struct	lock i_lock;	/* node lock */
89
90	long iso_extent;	/* extent of file */
91	long i_size;
92	long iso_start;		/* actual start of data of file (may be different */
93				/* from iso_extent, if file has extended attributes) */
94	ISO_RRIP_INODE	inode;
95};
96
97#define	i_forw		i_chain[0]
98#define	i_back		i_chain[1]
99
100/* flags */
101#define	IN_ACCESS	0x0020		/* inode access time to be updated */
102
103#define VTOI(vp) ((struct iso_node *)(vp)->v_data)
104#define ITOV(ip) ((ip)->i_vnode)
105
106/*
107 * Prototypes for ISOFS vnode operations
108 */
109int cd9660_lookup __P((struct vop_lookup_args *));
110int cd9660_inactive __P((struct vop_inactive_args *));
111int cd9660_reclaim __P((struct vop_reclaim_args *));
112int cd9660_bmap __P((struct vop_bmap_args *));
113int cd9660_pathconf __P((struct vop_pathconf_args *));
114int cd9660_blkatoff __P((struct vop_blkatoff_args *));
115#define cd9660_revoke vop_revoke
116
117void cd9660_defattr __P((struct iso_directory_record *,
118			struct iso_node *, struct buf *, enum ISO_FTYPE));
119void cd9660_deftstamp __P((struct iso_directory_record *,
120			struct iso_node *, struct buf *, enum ISO_FTYPE));
121struct vnode *cd9660_ihashget __P((dev_t, ino_t));
122void cd9660_ihashins __P((struct iso_node *));
123void cd9660_ihashrem __P((struct iso_node *));
124int cd9660_tstamp_conv7 __P((u_char *, struct timespec *, enum ISO_FTYPE));
125int cd9660_tstamp_conv17 __P((u_char *, struct timespec *));
126#ifdef	ISODEVMAP
127struct iso_dnode *iso_dmap __P((dev_t, ino_t, int));
128void iso_dunmap __P((dev_t));
129#endif
130