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/* Periodically call sync.
Copyright (C) 1994 Free Software Foundation, Inc.
Written by Michael I. Bushnell.
This file is part of the GNU Hurd.
The GNU Hurd 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.
The GNU Hurd 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 <unistd.h>
#include <stdio.h>
#include <fcntl.h>
int
main ()
{
int fd;
switch (fork ())
{
case -1:
perror ("Cannot fork");
exit (1);
case 0:
break;
default:
_exit (0);
}
if (setsid () == -1)
{
perror ("Cannot setsid");
exit (1);
}
chdir ("/");
fd = open ("/dev/null", O_RDWR, 0);
if (fd != -1)
{
dup2 (fd, STDIN_FILENO);
dup2 (fd, STDOUT_FILENO);
dup2 (fd, STDERR_FILENO);
if (fd < STDERR_FILENO)
close (fd);
}
for (;;)
{
sync ();
sleep (30);
}
}
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