source/lib/fault.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    Critical Fault handling
   5    Copyright (C) Andrew Tridgell 1992-1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23 extern int DEBUGLEVEL;
  24
  25
  26 static void (*cont_fn)(void *);
  27
  28
  29 /*******************************************************************
  30 report a fault
  31 ********************************************************************/
  32 static void fault_report(int sig)
  33 {
  34         static int counter;
  35
  36         if (counter) _exit(1);
  37
  38         counter++;
  39
  40         DEBUG(0,("===============================================================\n"));
  41         DEBUG(0,("INTERNAL ERROR: Signal %d in pid %d (%s)",sig,(int)sys_getpid(),VERSION));
  42         DEBUG(0,("\nPlease read the file BUGS.txt in the distribution\n"));
  43         DEBUG(0,("===============================================================\n"));
  44
  45         smb_panic("internal error");
  46
  47         if (cont_fn) {
  48                 cont_fn(NULL);
  49 #ifdef SIGSEGV
  50                 CatchSignal(SIGSEGV,SIGNAL_CAST SIG_DFL);
  51 #endif
  52 #ifdef SIGBUS
  53                 CatchSignal(SIGBUS,SIGNAL_CAST SIG_DFL);
  54 #endif
  55                 return; /* this should cause a core dump */
  56         }
  57         exit(1);
  58 }
  59
  60 /****************************************************************************
  61 catch serious errors
  62 ****************************************************************************/
  63 static void sig_fault(int sig)
  64 {
  65         fault_report(sig);
  66 }
  67
  68 /*******************************************************************
  69 setup our fault handlers
  70 ********************************************************************/
  71 void fault_setup(void (*fn)(void *))
  72 {
  73         cont_fn = fn;
  74
  75 #ifdef SIGSEGV
  76         CatchSignal(SIGSEGV,SIGNAL_CAST sig_fault);
  77 #endif
  78 #ifdef SIGBUS
  79         CatchSignal(SIGBUS,SIGNAL_CAST sig_fault);
  80 #endif
  81 }
  82
  83
  84