1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef	_SYS_FILEP_H
27#define	_SYS_FILEP_H
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"
30
31#ifdef __cplusplus
32extern "C" {
33#endif
34
35#include <sys/fs/ufs_fsdir.h>
36#include <sys/fs/ufs_fs.h>
37#include <sys/fs/ufs_inode.h>
38
39/*
40 *  These structs should be invisible to the caller of
41 *  the user-level routines
42 */
43typedef struct dev_ident {	/* device identifier block */
44	char		*di_desc;
45	int		di_dcookie;
46	char		di_taken;
47	union {
48		struct	fs	di_fs;
49		char	dummy[SBSIZE];
50	}		un_fs;
51} devid_t;
52
53/*
54 * Borrowed bits from i_flag
55 */
56#define	FI_CACHED		0x100000
57#define	FI_PARTIAL_CACHE	0x200000
58#define	FI_NOCACHE		0x400000
59
60#define	FI_COMPRESSED		0x8		/* File compressed in ramdisk */
61#define	DECOMP_BUFSIZE		(512 * 1024)	/* size of decompress buffer */
62
63typedef struct file_ident {	/* file identifier block */
64	uint_t		fi_filedes;
65	char		*fi_path;
66	daddr_t		fi_blocknum;
67	uint_t		fi_count;
68	off_t		fi_offset;
69	caddr_t		fi_memp;
70	char		fi_taken;
71	char		fi_flags;
72	devid_t		*fi_devp;
73	char		fi_buf[MAXBSIZE];
74	int		(*fi_getblock)(struct file_ident *);
75	struct	inode	*fi_inode;
76	struct file_ident *fi_forw;
77	struct file_ident *fi_back;
78	off_t		fi_cfoff;		/* compressed file offset */
79	caddr_t		fi_dcscrbuf;		/* decomp scratch buffer */
80	size_t		fi_dcscrused;		/* used bytes in scratch buf */
81	struct z_stream_s *fi_dcstream;		/* decompression stream */
82}  fileid_t;
83
84extern int diskread(fileid_t *);
85
86#ifdef __cplusplus
87}
88#endif
89
90#endif	/* _SYS_FILEP_H */
91