xref: /freebsd/sys/fs/cd9660/cd9660_node.h (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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  * 4. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  *	@(#)cd9660_node.h	8.6 (Berkeley) 5/14/95
35  * $FreeBSD$
36  */
37 
38 /*
39  * Theoretically, directories can be more than 2Gb in length,
40  * however, in practice this seems unlikely. So, we define
41  * the type doff_t as a long to keep down the cost of doing
42  * lookup on a 32-bit machine. If you are porting to a 64-bit
43  * architecture, you should make doff_t the same as off_t.
44  */
45 #define doff_t	long
46 
47 typedef	struct	{
48 	struct timespec	iso_atime;	/* time of last access */
49 	struct timespec	iso_mtime;	/* time of last modification */
50 	struct timespec	iso_ctime;	/* time file changed */
51 	u_short		iso_mode;	/* files access mode and type */
52 	uid_t		iso_uid;	/* owner user id */
53 	gid_t		iso_gid;	/* owner group id */
54 	short		iso_links;	/* links of file */
55 	dev_t		iso_rdev;	/* Major/Minor number for special */
56 } ISO_RRIP_INODE;
57 
58 
59 struct iso_node {
60 	struct	vnode *i_vnode;	/* vnode associated with this inode */
61 	u_long	i_flag;		/* see below */
62 	ino_t	i_number;	/* the identity of the inode */
63 				/* we use the actual starting block of the file */
64 	struct	iso_mnt *i_mnt;	/* filesystem associated with this inode */
65 	struct	lockf *i_lockf;	/* head of byte-level lock list */
66 	doff_t	i_endoff;	/* end of useful stuff in directory */
67 	doff_t	i_diroff;	/* offset in dir, where we found last entry */
68 	doff_t	i_offset;	/* offset of free space in directory */
69 	ino_t	i_ino;		/* inode number of found directory */
70 
71 	long iso_extent;	/* extent of file */
72 	unsigned long i_size;
73 	long iso_start;		/* actual start of data of file (may be different */
74 				/* from iso_extent, if file has extended attributes) */
75 	ISO_RRIP_INODE	inode;
76 };
77 
78 #define	i_forw		i_chain[0]
79 #define	i_back		i_chain[1]
80 
81 /* flags */
82 #define	IN_ACCESS	0x0020		/* inode access time to be updated */
83 
84 #define VTOI(vp) ((struct iso_node *)(vp)->v_data)
85 #define ITOV(ip) ((ip)->i_vnode)
86 
87 #ifdef _KERNEL
88 
89 #ifdef MALLOC_DECLARE
90 MALLOC_DECLARE(M_ISOFSMNT);
91 MALLOC_DECLARE(M_ISOFSNODE);
92 #endif
93 
94 struct buf;
95 struct vop_bmap_args;
96 struct vop_cachedlookup_args;
97 struct vop_inactive_args;
98 struct vop_reclaim_args;
99 
100 /*
101  * Prototypes for ISOFS vnode operations
102  */
103 int cd9660_lookup(struct vop_cachedlookup_args *);
104 int cd9660_inactive(struct vop_inactive_args *);
105 int cd9660_reclaim(struct vop_reclaim_args *);
106 int cd9660_bmap(struct vop_bmap_args *);
107 int cd9660_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp);
108 
109 void cd9660_defattr(struct iso_directory_record *,
110 			struct iso_node *, struct buf *, enum ISO_FTYPE);
111 void cd9660_deftstamp(struct iso_directory_record *,
112 			struct iso_node *, struct buf *, enum ISO_FTYPE);
113 int cd9660_tstamp_conv7(u_char *, struct timespec *, enum ISO_FTYPE);
114 int cd9660_tstamp_conv17(u_char *, struct timespec *);
115 
116 #endif /* _KERNEL */
117