zfs_debug.h revision 268650 
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) 2013 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
63#ifdef ZFS_DEBUG
64extern void __dprintf(const char *file, const char *func,
65    int line, const char *fmt, ...);
66#define	dprintf(...) \
67	if (zfs_flags & ZFS_DEBUG_DPRINTF) \
68		__dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
69#else
70#define	dprintf(...) ((void)0)
71#endif /* ZFS_DEBUG */
72
73extern void zfs_panic_recover(const char *fmt, ...);
74
75typedef struct zfs_dbgmsg {
76	list_node_t zdm_node;
77	time_t zdm_timestamp;
78	char zdm_msg[1]; /* variable length allocation */
79} zfs_dbgmsg_t;
80
81extern void zfs_dbgmsg_init(void);
82extern void zfs_dbgmsg_fini(void);
83extern void zfs_dbgmsg(const char *fmt, ...);
84extern void zfs_dbgmsg_print(const char *tag);
85
86#ifdef illumos
87#ifndef _KERNEL
88extern int dprintf_find_string(const char *string);
89#endif
90#endif /* illumos */
91
92#ifdef	__cplusplus
93}
94#endif
95
96#endif	/* _SYS_ZFS_DEBUG_H */
97