signal.c 1.17 KB
/* GNU mailutils - a suite of utilities for electronic mail
   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.

   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, 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 "pop3d.h"

void
pop3d_sigchld (int signo)
{
  pid_t pid;
  int status;
  int old_errno = errno ;

  (void)signo;
  errno = 0;
  while ( (pid = waitpid(-1, &status, WNOHANG)) > 0)
      --children;
#ifndef HAVE_SIGACTION
  /* On some system, signal implements the unreliabe sematic and
     has to be rearm.  */
  signal (SIGCHLD, pop3d_sigchld);
#endif
  errno = old_errno;
}