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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 | |
30 | extern "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 - Always enabled for user space builds. | |
43 | */ | |
44 | ||
45 | #if !defined(ZFS_DEBUG) && !defined(_KERNEL) | |
46 | #define ZFS_DEBUG | |
47 | #endif | |
48 | ||
49 | extern int zfs_flags; | |
50 | extern int zfs_recover; | |
51 | ||
52 | #define ZFS_DEBUG_DPRINTF (1<<0) | |
53 | #define ZFS_DEBUG_DBUF_VERIFY (1<<1) | |
54 | #define ZFS_DEBUG_DNODE_VERIFY (1<<2) | |
55 | #define ZFS_DEBUG_SNAPNAMES (1<<3) | |
56 | #define ZFS_DEBUG_MODIFY (1<<4) | |
57 | #define ZFS_DEBUG_SPA (1<<5) | |
58 | #define ZFS_DEBUG_ZIO_FREE (1<<6) | |
59 | ||
60 | /* | |
61 | * Always log zfs debug messages to the spl debug subsystem as SS_USER1. | |
62 | * When the SPL is configured with debugging enabled these messages will | |
63 | * appear in the internal spl debug log, otherwise they are a no-op. | |
64 | */ | |
65 | #if defined(_KERNEL) | |
66 | ||
67 | #include <spl-debug.h> | |
68 | #define dprintf(...) \ | |
69 | if (zfs_flags & ZFS_DEBUG_DPRINTF) \ | |
70 | __SDEBUG(NULL, SS_USER1, SD_DPRINTF, __VA_ARGS__) | |
71 | ||
72 | /* | |
73 | * When zfs is running is user space the debugging is always enabled. | |
74 | * The messages will be printed using the __dprintf() function and | |
75 | * filtered based on the zfs_flags variable. | |
76 | */ | |
77 | #else | |
78 | #define dprintf(...) \ | |
79 | if (zfs_flags & ZFS_DEBUG_DPRINTF) \ | |
80 | __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__) | |
81 | ||
82 | #endif /* _KERNEL */ | |
83 | ||
84 | extern void zfs_panic_recover(const char *fmt, ...); | |
85 | ||
86 | typedef struct zfs_dbgmsg { | |
87 | list_node_t zdm_node; | |
88 | time_t zdm_timestamp; | |
89 | char zdm_msg[1]; /* variable length allocation */ | |
90 | } zfs_dbgmsg_t; | |
91 | ||
92 | extern void zfs_dbgmsg_init(void); | |
93 | extern void zfs_dbgmsg_fini(void); | |
94 | #if defined(_KERNEL) && defined(__linux__) | |
95 | #define zfs_dbgmsg(...) dprintf(__VA_ARGS__) | |
96 | #else | |
97 | extern void zfs_dbgmsg(const char *fmt, ...); | |
98 | extern void zfs_dbgmsg_print(const char *tag); | |
99 | #endif | |
100 | ||
101 | #ifndef _KERNEL | |
102 | extern int dprintf_find_string(const char *string); | |
103 | #endif | |
104 | ||
105 | #ifdef __cplusplus | |
106 | } | |
107 | #endif | |
108 | ||
109 | #endif /* _SYS_ZFS_DEBUG_H */ |