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WebSVN – planix.SVN – Blame – /os/branches/feature_unix/sys/src/cmd/fossil/dump.c – Rev 2

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/*
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 * Clumsy hack to take snapshots and dumps.
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 */
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#include <u.h>
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#include <libc.h>
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void
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usage(void)
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{
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	fprint(2, "usage: fossil/dump [-i snap-interval] [-n name] fscons /n/fossil\n");
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	exits("usage");
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}
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char*
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snapnow(void)
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{
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	Tm t;
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	static char buf[100];
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	t = *localtime(time(0)-5*60*60);	/* take dumps at 5:00 am */
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	sprint(buf, "archive/%d/%02d%02d", t.year+1900, t.mon+1, t.mday);
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	return buf;
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}
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void
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main(int argc, char **argv)
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{
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	int onlyarchive, cons, s;
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	ulong t, i;
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	char *name;
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	name = "main";
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	s = 0;
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	onlyarchive = 0;
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	i = 60*60;		/* one hour */
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	ARGBEGIN{
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	case 'i':
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		i = atoi(EARGF(usage()));
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		if(i == 0){
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			onlyarchive = 1;
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			i = 60*60;
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		}
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		break;
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	case 'n':
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		name = EARGF(usage());
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		break;
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	case 's':
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		s = atoi(EARGF(usage()));
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		break;
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	}ARGEND
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	if(argc != 2)
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		usage();
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	if((cons = open(argv[0], OWRITE)) < 0)
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		sysfatal("open %s: %r", argv[0]);
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	if(chdir(argv[1]) < 0)
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		sysfatal("chdir %s: %r", argv[1]);
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	rfork(RFNOTEG);
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	switch(fork()){
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	case -1:
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		sysfatal("fork: %r");
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	case 0:
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		break;
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	default:
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		exits(0);
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	}
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	/*
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	 * pause at boot time to let clock stabilize.
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	 */
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	if(s)
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		sleep(s*1000);
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	for(;;){
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		if(access(snapnow(), AEXIST) < 0)
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			fprint(cons, "\nfsys %s snap -a\n", name);
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		t = time(0);
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		sleep((i - t%i)*1000+200);
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		if(!onlyarchive)
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			fprint(cons, "\nfsys %s snap\n", name);
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	}
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}