xref: /illumos-gate/usr/src/uts/common/fs/zfs/sys/zfs_debug.h (revision 2e0fe3efe5f9d579d4e44b3532d8e342c68b40ca)
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  */
24 
25 #ifndef _SYS_ZFS_DEBUG_H
26 #define	_SYS_ZFS_DEBUG_H
27 
28 #ifdef	__cplusplus
29 extern "C" {
30 #endif
31 
32 #ifndef TRUE
33 #define	TRUE 1
34 #endif
35 
36 #ifndef FALSE
37 #define	FALSE 0
38 #endif
39 
40 /*
41  * ZFS debugging
42  */
43 
44 #if defined(DEBUG) || !defined(_KERNEL)
45 #define	ZFS_DEBUG
46 #endif
47 
48 extern int zfs_flags;
49 
50 #define	ZFS_DEBUG_DPRINTF	0x0001
51 #define	ZFS_DEBUG_DBUF_VERIFY	0x0002
52 #define	ZFS_DEBUG_DNODE_VERIFY	0x0004
53 #define	ZFS_DEBUG_SNAPNAMES	0x0008
54 #define	ZFS_DEBUG_MODIFY	0x0010
55 
56 #ifdef ZFS_DEBUG
57 extern void __dprintf(const char *file, const char *func,
58     int line, const char *fmt, ...);
59 #define	dprintf(...) \
60 	if (zfs_flags & ZFS_DEBUG_DPRINTF) \
61 		__dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
62 #else
63 #define	dprintf(...) ((void)0)
64 #endif /* ZFS_DEBUG */
65 
66 extern void zfs_panic_recover(const char *fmt, ...);
67 
68 typedef struct zfs_dbgmsg {
69 	list_node_t zdm_node;
70 	time_t zdm_timestamp;
71 	char zdm_msg[1]; /* variable length allocation */
72 } zfs_dbgmsg_t;
73 
74 extern void zfs_dbgmsg_init(void);
75 extern void zfs_dbgmsg_fini(void);
76 extern void zfs_dbgmsg(const char *fmt, ...);
77 
78 #ifdef	__cplusplus
79 }
80 #endif
81 
82 #endif	/* _SYS_ZFS_DEBUG_H */
83