/share/man/man9/panic.9

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  1. .\"     $NetBSD: panic.9,v 1.2 1996/10/09 17:20:04 explorer Exp $
    2. 

  2. .\"
    3. 

  3. .\" Copyright (c) 1996 Michael Graff.
    4. 

  4. .\" All rights reserved.
    5. 

  5. .\"
    6. 

  6. .\" Redistribution and use in source and binary forms, with or without
    7. 

  7. .\" modification, are permitted provided that the following conditions
    8. 

  8. .\" are met:
    9. 

  9. .\" 1. Redistributions of source code must retain the above copyright
    10. 

  10. .\"    notice, this list of conditions and the following disclaimer.
    11. 

  11. .\" 2. Redistributions in binary form must reproduce the above copyright
    12. 

  12. .\"    notice, this list of conditions and the following disclaimer in the
    13. 

  13. .\"    documentation and/or other materials provided with the distribution.
    14. 

  14. .\" 3. All advertising materials mentioning features or use of this software
    15. 

  15. .\"    must display the following acknowledgement:
    16. 

  16. .\"      This product includes software developed by Michael Graff
    17. 

  17. .\"      for the NetBSD Project.
    18. 

  18. .\" 3. The name of the author may not be used to endorse or promote products
    19. 

  19. .\"    derived from this software without specific prior written permission
    20. 

  20. .\"
    21. 

  21. .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
    22. 

  22. .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
    23. 

  23. .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
    24. 

  24. .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
    25. 

  25. .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
    26. 

  26. .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    27. 

  27. .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    28. 

  28. .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    29. 

  29. .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    30. 

  30. .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    31. 

  31. .\"
    32. 

  32. .\" $FreeBSD$
    33. 

  33. .\"
    34. 

  34. .Dd August 11, 1995
    35. 

  35. .Dt PANIC 9
    36. 

  36. .Os
    37. 

  37. .Sh NAME
    38. 

  38. .Nm panic
    39. 

  39. .Nd bring down system on fatal error
    40. 

  40. .Sh SYNOPSIS
    41. 

  41. .In sys/types.h
    42. 

  42. .In sys/systm.h
    43. 

  43. .Ft void
    44. 

  44. .Fn panic "const char *fmt" ...
    45. 

  45. .Sh DESCRIPTION
    46. 

  46. The
    47. 

  47. .Fn panic
    48. 

  48. function terminates the running system.
    49. 

  49. The message
    50. 

  50. .Fa fmt
    51. 

  51. is a
    52. 

  52. .Xr printf 3
    53. 

  53. style format string.
    54. 

  54. The message is printed to the console and the location
    55. 

  55. .Fa panicstr
    56. 

  56. is set to the address of the message text for retrieval from the OS
    57. 

  57. core dump.
    58. 

  58. .Pp
    59. 

  59. If the kernel debugger is installed control is passed to it, otherwise
    60. 

  60. an attempt to save a core dump of the OS to a configured dump device
    61. 

  61. is made.
    62. 

  62. .Pp
    63. 

  63. If
    64. 

  64. .Fn panic
    65. 

  65. is called twice (from the disk sync routines, for example) the system is
    66. 

  66. rebooted without syncing the disks.
    67. 

  67. .Sh RETURN VALUES
    68. 

  68. The
    69. 

  69. .Fn panic
    70. 

  70. function does not return.
    71.