/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /* * Clumsy hack to take snapshots and dumps. */#include <u.h>#include <libc.h> voidusage(void){	fprint(2, "usage: fossil/dump [-i snap-interval] [-n name] fscons /n/fossil\n");	exits("usage");} char*snapnow(void){	Tm t;	static char buf[100]; 	t = *localtime(time(0)-5*60*60);	/* take dumps at 5:00 am */ 	sprint(buf, "archive/%d/%02d%02d", t.year+1900, t.mon+1, t.mday);	return buf;} voidmain(int argc, char **argv){	int onlyarchive, cons, s;	ulong t, i;	char *name; 	name = "main";	s = 0;	onlyarchive = 0;	i = 60*60;		/* one hour */	ARGBEGIN{	case 'i':		i = atoi(EARGF(usage()));		if(i == 0){			onlyarchive = 1;			i = 60*60;		}		break;	case 'n':		name = EARGF(usage());		break;	case 's':		s = atoi(EARGF(usage()));		break;	}ARGEND 	if(argc != 2)		usage(); 	if((cons = open(argv[0], OWRITE)) < 0)		sysfatal("open %s: %r", argv[0]); 	if(chdir(argv[1]) < 0)		sysfatal("chdir %s: %r", argv[1]); 	rfork(RFNOTEG);	switch(fork()){	case -1:		sysfatal("fork: %r");	case 0:		break;	default:		exits(0);	} 	/*	 * pause at boot time to let clock stabilize.	 */	if(s)		sleep(s*1000); 	for(;;){		if(access(snapnow(), AEXIST) < 0)			fprint(cons, "\nfsys %s snap -a\n", name);		t = time(0);		sleep((i - t%i)*1000+200);		if(!onlyarchive)			fprint(cons, "\nfsys %s snap\n", name);	}}