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428870ff BB |
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) 2010, Oracle and/or its affiliates. All rights reserved. | |
23 | */ | |
24 | ||
25 | #include <sys/zfs_context.h> | |
26 | ||
d7e398ce BB |
27 | /* |
28 | * Enable various debugging features. | |
29 | */ | |
30 | int zfs_flags = 0; | |
31 | ||
32 | /* | |
33 | * zfs_recover can be set to nonzero to attempt to recover from | |
34 | * otherwise-fatal errors, typically caused by on-disk corruption. When | |
35 | * set, calls to zfs_panic_recover() will turn into warning messages. | |
36 | */ | |
37 | int zfs_recover = 0; | |
428870ff | 38 | |
428870ff BB |
39 | |
40 | void | |
d7e398ce | 41 | zfs_panic_recover(const char *fmt, ...) |
428870ff | 42 | { |
d7e398ce | 43 | va_list adx; |
428870ff | 44 | |
d7e398ce BB |
45 | va_start(adx, fmt); |
46 | vcmn_err(zfs_recover ? CE_WARN : CE_PANIC, fmt, adx); | |
47 | va_end(adx); | |
428870ff BB |
48 | } |
49 | ||
50 | /* | |
d7e398ce BB |
51 | * Debug logging is enabled by default for production kernel builds. |
52 | * The overhead for this is negligible and the logs can be valuable when | |
53 | * debugging. For non-production user space builds all debugging except | |
54 | * logging is enabled since performance is no longer a concern. | |
428870ff BB |
55 | */ |
56 | void | |
d7e398ce | 57 | zfs_dbgmsg_init(void) |
428870ff | 58 | { |
d7e398ce BB |
59 | if (zfs_flags == 0) { |
60 | #if defined(_KERNEL) | |
61 | zfs_flags = ZFS_DEBUG_DPRINTF; | |
62 | spl_debug_mask |= SD_DPRINTF; | |
63 | spl_debug_subsys |= SS_USER1; | |
64 | #else | |
65 | zfs_flags = ~ZFS_DEBUG_DPRINTF; | |
66 | #endif /* _KERNEL */ | |
67 | } | |
68 | } | |
428870ff | 69 | |
d7e398ce BB |
70 | void |
71 | zfs_dbgmsg_fini(void) | |
72 | { | |
73 | return; | |
74 | } | |
428870ff | 75 | |
428870ff | 76 | |
d7e398ce BB |
77 | #if defined(_KERNEL) |
78 | module_param(zfs_flags, int, 0644); | |
79 | MODULE_PARM_DESC(zfs_flags, "Set additional debugging flags"); | |
428870ff | 80 | |
d7e398ce BB |
81 | module_param(zfs_recover, int, 0644); |
82 | MODULE_PARM_DESC(zfs_recover, "Set to attempt to recover from fatal errors"); | |
83 | #endif /* _KERNEL */ |