xref: /freebsd/sys/fs/cd9660/cd9660_node.h (revision c697fb7f)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1994
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley
8  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
9  * Support code is derived from software contributed to Berkeley
10  * by Atsushi Murai (amurai@spec.co.jp).
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  *	@(#)cd9660_node.h	8.6 (Berkeley) 5/14/95
37  * $FreeBSD$
38  */
39 
40 /*
41  * Theoretically, directories can be more than 2Gb in length,
42  * however, in practice this seems unlikely. So, we define
43  * the type doff_t as a long to keep down the cost of doing
44  * lookup on a 32-bit machine. If you are porting to a 64-bit
45  * architecture, you should make doff_t the same as off_t.
46  */
47 #define doff_t	long
48 
49 typedef	struct	{
50 	struct timespec	iso_atime;	/* time of last access */
51 	struct timespec	iso_mtime;	/* time of last modification */
52 	struct timespec	iso_ctime;	/* time file changed */
53 	u_short		iso_mode;	/* files access mode and type */
54 	uid_t		iso_uid;	/* owner user id */
55 	gid_t		iso_gid;	/* owner group id */
56 	short		iso_links;	/* links of file */
57 	dev_t		iso_rdev;	/* Major/Minor number for special */
58 } ISO_RRIP_INODE;
59 
60 
61 struct iso_node {
62 	struct	vnode *i_vnode;	/* vnode associated with this inode */
63 	cd_ino_t	i_number;	/* the identity of the inode */
64 				/* we use the actual starting block of the file */
65 	struct	iso_mnt *i_mnt;	/* filesystem associated with this inode */
66 	struct	lockf *i_lockf;	/* head of byte-level lock list */
67 	doff_t	i_endoff;	/* end of useful stuff in directory */
68 	doff_t	i_diroff;	/* offset in dir, where we found last entry */
69 
70 	long iso_extent;	/* extent of file */
71 	unsigned long i_size;
72 	long iso_start;		/* actual start of data of file (may be different */
73 				/* from iso_extent, if file has extended attributes) */
74 	ISO_RRIP_INODE	inode;
75 };
76 
77 #define	i_forw		i_chain[0]
78 #define	i_back		i_chain[1]
79 
80 #define VTOI(vp) ((struct iso_node *)(vp)->v_data)
81 #define ITOV(ip) ((ip)->i_vnode)
82 
83 #ifdef _KERNEL
84 
85 #ifdef MALLOC_DECLARE
86 MALLOC_DECLARE(M_ISOFSMNT);
87 MALLOC_DECLARE(M_ISOFSNODE);
88 #endif
89 
90 struct buf;
91 struct vop_bmap_args;
92 struct vop_cachedlookup_args;
93 struct vop_inactive_args;
94 struct vop_reclaim_args;
95 
96 /*
97  * Prototypes for ISOFS vnode operations
98  */
99 int cd9660_lookup(struct vop_cachedlookup_args *);
100 int cd9660_inactive(struct vop_inactive_args *);
101 int cd9660_reclaim(struct vop_reclaim_args *);
102 int cd9660_bmap(struct vop_bmap_args *);
103 int cd9660_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp);
104 
105 void cd9660_defattr(struct iso_directory_record *,
106 			struct iso_node *, struct buf *, enum ISO_FTYPE);
107 void cd9660_deftstamp(struct iso_directory_record *,
108 			struct iso_node *, struct buf *, enum ISO_FTYPE);
109 int cd9660_tstamp_conv7(u_char *, struct timespec *, enum ISO_FTYPE);
110 int cd9660_tstamp_conv17(u_char *, struct timespec *);
111 
112 #endif /* _KERNEL */
113