1 /*
2  * Clumsy hack to take snapshots and dumps.
3  */
4 #include <u.h>
5 #include <libc.h>
6 
7 void
8 usage(void)
9 {
10 	fprint(2, "usage: fossil/dump [-i snap-interval] [-n name] fscons /n/fossil\n");
11 	exits("usage");
12 }
13 
14 char*
15 snapnow(void)
16 {
17 	Tm t;
18 	static char buf[100];
19 
20 	t = *localtime(time(0)-5*60*60);	/* take dumps at 5:00 am */
21 
22 	sprint(buf, "archive/%d/%02d%02d", t.year+1900, t.mon+1, t.mday);
23 	return buf;
24 }
25 
26 void
27 main(int argc, char **argv)
28 {
29 	int onlyarchive, cons, s;
30 	ulong t, i;
31 	char *name;
32 
33 	name = "main";
34 	s = 0;
35 	onlyarchive = 0;
36 	i = 60*60;		/* one hour */
37 	ARGBEGIN{
38 	case 'i':
39 		i = atoi(EARGF(usage()));
40 		if(i == 0){
41 			onlyarchive = 1;
42 			i = 60*60;
43 		}
44 		break;
45 	case 'n':
46 		name = EARGF(usage());
47 		break;
48 	case 's':
49 		s = atoi(EARGF(usage()));
50 		break;
51 	}ARGEND
52 
53 	if(argc != 2)
54 		usage();
55 
56 	if((cons = open(argv[0], OWRITE)) < 0)
57 		sysfatal("open %s: %r", argv[0]);
58 
59 	if(chdir(argv[1]) < 0)
60 		sysfatal("chdir %s: %r", argv[1]);
61 
62 	rfork(RFNOTEG);
63 	switch(fork()){
64 	case -1:
65 		sysfatal("fork: %r");
66 	case 0:
67 		break;
68 	default:
69 		exits(0);
70 	}
71 
72 	/*
73 	 * pause at boot time to let clock stabilize.
74 	 */
75 	if(s)
76 		sleep(s*1000);
77 
78 	for(;;){
79 		if(access(snapnow(), AEXIST) < 0)
80 			fprint(cons, "\nfsys %s snap -a\n", name);
81 		t = time(0);
82 		sleep((i - t%i)*1000+200);
83 		if(!onlyarchive)
84 			fprint(cons, "\nfsys %s snap\n", name);
85 	}
86 }