[Sysfence-commit] sysfence sighandlers.c,NONE,1.1

[mkoperto <mko...@us...>]

Update of /cvsroot/sysfence/sysfence
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv24499

Added Files:
	sighandlers.c 
Log Message:
works only for SIGTERM


--- NEW FILE: sighandlers.c ---
/*
 
  copyright (c) 2004, Mirek Kopertowski <m.k...@po...>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License, version 2 as
  published by the Free Software Foundation (see file COPYING for 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 <signal.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <string.h>
#include "exit.h"
#include "parseopt/lex.h"
#include "getstats.h"
#include "conditions.h"
#include "mainloop.h"
#include "communication.h"
#include <stdlib.h>

struct sigaction schildact, stermact;

void schild_action (int snumber);
void sterm_action (int snumber); 


void signal_init ()
{
    memset (&schildact, 0, sizeof(schildact));
    schildact.sa_handler = &schild_action;
    sigaction (SIGCHLD, &schildact, NULL);

    memset (&stermact, 0, sizeof(stermact));
    stermact.sa_handler = &sterm_action;
    sigaction (SIGTERM, &stermact, NULL);

}

/* local functions ------------------------------------------------------------*/

void schild_action (int snumber) 
{
    int     exitstatus, pid, i=0;

    pid = (int)wait (&exitstatus);
    
    while (*(ruleprocesses + i)!=pid) i++;
    
    *(ruleprocesses + i) = 0;
}

void sterm_action (int snumber) 
{
    int     i;
    
    /* deactive handling SIGCHLD */
    memset (&schildact, 0, sizeof(schildact));
    schildact.sa_handler = SIG_IGN;
    sigaction (SIGCHLD, &schildact, NULL);
    
    /* terminate child processes */
    for  (i=0; i<rulecount; i++)
        if (*(ruleprocesses + i)) kill ((pid_t)*(ruleprocesses + i), SIGTERM);

    /* detach, deallocate shared memory */
    shared_mem_detach ((void *)stat);
    shared_mem_del (shmid);

    /* deallocate semaphore */
    semaphore_del (semid);    

    bail_out (EXIT_OK, NULL);
}