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
  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
  43  */
  44 
  45 #if defined(DEBUG) || !defined(_KERNEL)
  46 #define ZFS_DEBUG
  47 #endif
  48 
  49 extern int zfs_flags;
  50 extern boolean_t zfs_recover;
  51 extern boolean_t zfs_free_leak_on_eio;
  52 
  53 #define ZFS_DEBUG_DPRINTF               (1 << 0)
  54 #define ZFS_DEBUG_DBUF_VERIFY           (1 << 1)
  55 #define ZFS_DEBUG_DNODE_VERIFY          (1 << 2)
  56 #define ZFS_DEBUG_SNAPNAMES             (1 << 3)
  57 #define ZFS_DEBUG_MODIFY                (1 << 4)
  58 #define ZFS_DEBUG_SPA                   (1 << 5)
  59 #define ZFS_DEBUG_ZIO_FREE              (1 << 6)
  60 #define ZFS_DEBUG_HISTOGRAM_VERIFY      (1 << 7)
  61 #define ZFS_DEBUG_METASLAB_VERIFY       (1 << 8)
  62 
  63 #ifdef ZFS_DEBUG
  64 extern 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 
  73 extern void zfs_panic_recover(const char *fmt, ...);
  74 
  75 typedef 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 
  81 extern void zfs_dbgmsg_init(void);
  82 extern void zfs_dbgmsg_fini(void);
  83 extern void zfs_dbgmsg(const char *fmt, ...);
  84 extern void zfs_dbgmsg_print(const char *tag);
  85 
  86 #ifndef _KERNEL
  87 extern int dprintf_find_string(const char *string);
  88 #endif
  89 
  90 #ifdef  __cplusplus
  91 }
  92 #endif
  93 
  94 #endif  /* _SYS_ZFS_DEBUG_H */