Subversion Repositories planix.SVN

/*
 * Clumsy hack to take snapshots and dumps.
 */
#include <u.h>
#include <libc.h>

void
usage(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;
}

void
main(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);
        }
}