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/* vi: set sw=4 ts=4: */
/*
* Mini update implementation for busybox
*
*
* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "internal.h"
#include <linux/unistd.h>
#if defined(__GLIBC__)
#include <sys/kdaemon.h>
#else
_syscall2(int, bdflush, int, func, int, data);
#endif /* __GLIBC__ */
extern int update_main(int argc, char **argv)
{
/*
* Update is actually two daemons, bdflush and update.
*/
int pid;
pid = fork();
if (pid < 0)
return pid;
else if (pid == 0) {
/*
* This is no longer necessary since 1.3.5x, but it will harmlessly
* exit if that is the case.
*/
strcpy(argv[0], "bdflush (update)");
argv[1] = 0;
argv[2] = 0;
bdflush(1, 0);
_exit(0);
}
pid = fork();
if (pid < 0)
return pid;
else if (pid == 0) {
argv[0] = "update";
for (;;) {
sync();
sleep(30);
}
}
return 0;
}
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