zfs_debug.h revision 321529 
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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
24 */
25
26#ifndef _SYS_ZFS_DEBUG_H
27#define	_SYS_ZFS_DEBUG_H
28
29#ifdef	__cplusplus
30extern "C" {
31#endif
32
33#ifndef TRUE
34#define	TRUE 1
35#endif
36
37#ifndef FALSE
38#define	FALSE 0
39#endif
40
41/*
42 * ZFS debugging
43 */
44
45#if defined(DEBUG) || !defined(_KERNEL)
46#if !defined(ZFS_DEBUG)
47#define	ZFS_DEBUG
48#endif
49#endif
50
51extern int zfs_flags;
52extern boolean_t zfs_recover;
53extern boolean_t zfs_free_leak_on_eio;
54
55#define	ZFS_DEBUG_DPRINTF		(1 << 0)
56#define	ZFS_DEBUG_DBUF_VERIFY		(1 << 1)
57#define	ZFS_DEBUG_DNODE_VERIFY		(1 << 2)
58#define	ZFS_DEBUG_SNAPNAMES		(1 << 3)
59#define	ZFS_DEBUG_MODIFY		(1 << 4)
60#define	ZFS_DEBUG_SPA			(1 << 5)
61#define	ZFS_DEBUG_ZIO_FREE		(1 << 6)
62#define	ZFS_DEBUG_HISTOGRAM_VERIFY	(1 << 7)
63#define	ZFS_DEBUG_METASLAB_VERIFY	(1 << 8)
64
65#ifdef ZFS_DEBUG
66extern void __dprintf(const char *file, const char *func,
67    int line, const char *fmt, ...);
68#define	dprintf(...) \
69	if (zfs_flags & ZFS_DEBUG_DPRINTF) \
70		__dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
71#else
72#define	dprintf(...) ((void)0)
73#endif /* ZFS_DEBUG */
74
75extern void zfs_panic_recover(const char *fmt, ...);
76
77typedef struct zfs_dbgmsg {
78	list_node_t zdm_node;
79	time_t zdm_timestamp;
80	char zdm_msg[1]; /* variable length allocation */
81} zfs_dbgmsg_t;
82
83extern void zfs_dbgmsg_init(void);
84extern void zfs_dbgmsg_fini(void);
85extern void zfs_dbgmsg(const char *fmt, ...);
86extern void zfs_dbgmsg_print(const char *tag);
87
88#ifdef illumos
89#ifndef _KERNEL
90extern int dprintf_find_string(const char *string);
91#endif
92#endif /* illumos */
93
94#ifdef	__cplusplus
95}
96#endif
97
98#endif	/* _SYS_ZFS_DEBUG_H */
99