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-rw-r--r--source4/lib/fault.c107
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diff --git a/source4/lib/fault.c b/source4/lib/fault.c
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+/*
+ Unix SMB/CIFS implementation.
+ 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"
+
+static void (*cont_fn)(void *);
+
+/* the registered fault handler */
+static struct {
+ const char *name;
+ void (*fault_handler)(int sig);
+} fault_handlers;
+
+
+/*******************************************************************
+report a fault
+********************************************************************/
+static void fault_report(int sig)
+{
+ static int counter;
+
+ if (counter) _exit(1);
+
+ DEBUG(0,("===============================================================\n"));
+ DEBUG(0,("INTERNAL ERROR: Signal %d in pid %d (%s)",sig,(int)getpid(),SAMBA_VERSION));
+ DEBUG(0,("\nPlease read the file BUGS.txt in the distribution\n"));
+ DEBUG(0,("===============================================================\n"));
+
+ smb_panic("internal error");
+
+ if (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)
+{
+ if (fault_handlers.fault_handler) {
+ /* we have a fault handler, call it. It may not return. */
+ fault_handlers.fault_handler(sig);
+ }
+ /* If it returns or doean't exist, use regular reporter */
+ 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
+}
+
+/*
+ register a fault handler.
+ Should only be called once in the execution of smbd.
+*/
+BOOL register_fault_handler(const char *name, void (*fault_handler)(int sig))
+{
+ if (fault_handlers.name != NULL) {
+ /* it's already registered! */
+ DEBUG(2,("fault handler '%s' already registered - failed '%s'\n",
+ fault_handlers.name, name));
+ return False;
+ }
+
+ fault_handlers.name = name;
+ fault_handlers.fault_handler = fault_handler;
+
+ DEBUG(2,("fault handler '%s' registered\n", name));
+ return True;
+}