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/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2001 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include "uti/sge_rmon.h"
#include "uti/sge_prog.h"
#include "comm/commlib.h"
#include "sig_handlers.h"
#if defined(SOLARIS)
# include "sge_smf.h"
# include "sge_string.h"
#endif
static void sge_terminate(int);
static void sge_sigpipe_handler(int);
static void sge_alarmclock(int dummy);
#ifdef WIN32
# define SIGURG 16
# define SIGIO 23
# define SIGVTALRM 26
# define SIGPROF 27
#endif
sigset_t default_mask;
sigset_t omask;
sigset_t io_mask;
struct sigaction sigterm_vec, sigterm_ovec;
struct sigaction sigalrm_vec, sigalrm_ovec;
struct sigaction sigcld_pipe_vec, sigcld_pipe_ovec;
volatile int shut_me_down = 0;
volatile int sge_sig_handler_dead_children = 0;
volatile int sge_sig_handler_in_main_loop = 1;
volatile int sge_sig_handler_sigpipe_received = 0;
/********************************************************/
void sge_setup_sig_handlers(
int me_who
) {
DENTER(TOP_LAYER, "sge_setup_sig_handlers");
/******* set default signal mask *******/
sigfillset(&default_mask); /* default mask */
sigdelset(&default_mask, SIGINT);
sigdelset(&default_mask, SIGQUIT);
sigdelset(&default_mask, SIGALRM);
sigdelset(&default_mask, SIGTERM);
sigdelset(&default_mask, SIGURG);
sigdelset(&default_mask, SIGIO);
sigdelset(&default_mask, SIGABRT);
sigdelset(&default_mask, SIGILL);
#ifdef SIGBUS
sigdelset(&default_mask, SIGBUS);
#endif
sigdelset(&default_mask, SIGSEGV);
sigdelset(&default_mask, SIGTTIN);
sigdelset(&default_mask, SIGTTOU);
sigdelset(&default_mask, SIGFPE);
/* Allow SIGTRAP for debuggin purpose */
sigdelset(&default_mask, SIGTRAP);
sigdelset(&default_mask, SIGVTALRM);
sigdelset(&default_mask, SIGPROF);
if ((me_who == QCONF) ||
(me_who == EXECD) ||
(me_who == QMASTER) ||
(me_who == SCHEDD)) {
sigdelset(&default_mask, SIGCHLD);
#ifdef SIGCLD
sigdelset(&default_mask, SIGCLD);
#endif
sigdelset(&default_mask, SIGPIPE);
}
sigprocmask(SIG_SETMASK, &default_mask, &omask);
/******* define signal mask for io operations *******/
sigfillset(&io_mask);
sigdelset(&io_mask, SIGINT);
sigdelset(&io_mask, SIGQUIT);
sigdelset(&io_mask, SIGALRM);
sigdelset(&io_mask, SIGURG);
sigdelset(&io_mask, SIGIO);
sigdelset(&io_mask, SIGABRT);
sigdelset(&io_mask, SIGILL);
#ifdef SIGBUS
sigdelset(&io_mask, SIGBUS);
#endif
sigdelset(&io_mask, SIGSEGV);
sigdelset(&io_mask, SIGTTIN);
sigdelset(&io_mask, SIGTTOU);
sigdelset(&io_mask, SIGFPE);
/* Allow SIGTRAP for debuggin purpose */
sigdelset(&io_mask, SIGTRAP);
sigdelset(&io_mask, SIGVTALRM);
sigdelset(&io_mask, SIGPROF);
/******* setup signal handler for SIGALRM *******/
sigalrm_vec.sa_handler = sge_alarmclock;
sigfillset(&sigalrm_vec.sa_mask);
sigdelset(&sigalrm_vec.sa_mask, SIGQUIT);
sigdelset(&sigalrm_vec.sa_mask, SIGABRT);
sigdelset(&sigalrm_vec.sa_mask, SIGILL);
sigalrm_vec.sa_flags = 0;
sigaction(SIGALRM, &sigalrm_vec, &sigalrm_ovec);
/******** signal handler for SIGTERM and SIGINT *******/
sigterm_vec.sa_handler = sge_terminate;
/* block virtually all signals during execution of handler */
sigfillset(&sigterm_vec.sa_mask);
sigdelset(&sigterm_vec.sa_mask, SIGABRT);
sigdelset(&sigterm_vec.sa_mask, SIGILL);
/* restart interupted system call */
sigterm_vec.sa_flags = 0;
#ifdef SA_RESTART
sigcld_pipe_vec.sa_flags = SA_RESTART;
#endif
sigaction(SIGTERM, &sigterm_vec, &sigterm_ovec);
sigaction(SIGINT, &sigterm_vec, NULL);
/******** signal handler for SIGCHLD AND SIGPIPE *******/
if ((me_who == QCONF) ||
(me_who == EXECD) ||
(me_who == QMASTER) ||
(me_who == SCHEDD)) {
sigcld_pipe_vec.sa_handler = sge_reap;
sigfillset(&sigcld_pipe_vec.sa_mask);
sigdelset(&sigcld_pipe_vec.sa_mask, SIGQUIT);
sigdelset(&sigcld_pipe_vec.sa_mask, SIGALRM);
sigdelset(&sigcld_pipe_vec.sa_mask, SIGURG);
sigdelset(&sigcld_pipe_vec.sa_mask, SIGIO);
sigdelset(&sigcld_pipe_vec.sa_mask, SIGABRT);
sigdelset(&sigcld_pipe_vec.sa_mask, SIGILL);
/* restart interupted system call */
sigcld_pipe_vec.sa_flags = 0;
#ifdef SA_RESTART
sigcld_pipe_vec.sa_flags = SA_RESTART;
#endif
sigaction(SIGCHLD, &sigcld_pipe_vec, &sigcld_pipe_ovec);
sigcld_pipe_vec.sa_handler = sge_sigpipe_handler;
sigaction(SIGPIPE, &sigcld_pipe_vec, &sigcld_pipe_ovec);
}
DEXIT;
return;
}
/********************************************************/
static void sge_alarmclock(int dummy)
{
return;
}
/***************************************************************************/
static void sge_terminate(int dummy)
{
/* set shut-me-down variable */
shut_me_down = 1;
/* inform commlib to ignore all timeouts */
cl_com_ignore_timeouts(true);
/* This is not the best way to shut down a process.
TODO: remove the exit call, applications should check shut_me_down */
if (!sge_sig_handler_in_main_loop) {
#if defined(SOLARIS)
if (sge_smf_used() == 1) {
/* We don't do disable on svcadm restart */
if (sge_strnullcmp(sge_smf_get_instance_state(), SCF_STATE_STRING_ONLINE) == 0 &&
sge_strnullcmp(sge_smf_get_instance_next_state(), SCF_STATE_STRING_NONE) == 0) {
sge_smf_temporary_disable_instance();
}
}
#endif
exit(1);
}
}
/***************************************************************************/
void sge_reap(int dummy)
{
sge_sig_handler_dead_children = 1;
}
/***************************************************************************/
static void sge_sigpipe_handler(int dummy)
{
sge_sig_handler_sigpipe_received = 1;
}
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