samba-mirror/source3/lib/fault.c

/* 
   Unix SMB/Netbios implementation.
   Version 1.9.
   Critical Fault handling
   Copyright (C) Andrew Tridgell 1992-1998
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"
extern int DEBUGLEVEL;


static void (*cont_fn)(void *);


/*******************************************************************
report a fault
********************************************************************/
static void fault_report(int sig)
{
  DEBUG(0,("===============================================================\n"));
  DEBUG(0,("INTERNAL ERROR: Signal %d in pid %d (%s)",sig,(int)getpid(),VERSION));
  DEBUG(0,("\nPlease read the file BUGS.txt in the distribution\n"));
  DEBUG(0,("===============================================================\n"));
  
#if AJT
  ajt_panic();
#endif  

  if (cont_fn)
    {
      fault_setup(cont_fn);
      cont_fn(NULL);
#ifdef SIGSEGV
      CatchSignal(SIGSEGV,SIGNAL_CAST SIG_DFL);
#endif
#ifdef SIGBUS
      CatchSignal(SIGBUS,SIGNAL_CAST SIG_DFL);
#endif
      return; /* this should cause a core dump */
    }
  exit(1);
}

/****************************************************************************
catch serious errors
****************************************************************************/
static void sig_fault(int sig)
{
  fault_report(sig);
}

/*******************************************************************
setup our fault handlers
********************************************************************/
void fault_setup(void (*fn)(void *))
{
  cont_fn = fn;

#ifdef SIGSEGV
  CatchSignal(SIGSEGV,SIGNAL_CAST sig_fault);
#endif
#ifdef SIGBUS
  CatchSignal(SIGBUS,SIGNAL_CAST sig_fault);
#endif
}