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Annotation of embedaddon/ntp/util/testrs6000.c, revision 1.1.1.1

1.1       misho       1: /* Checks for the RS/6000 AIX adjtime() bug, in which if a negative
                      2:  * offset is given, the system gets messed up and never completes the
                      3:  * adjustment.  If the problem is fixed, this program will print the
                      4:  * time, sit there for 10 seconds, and exit.  If the problem isn't fixed,
                      5:  * the program will print an occasional "result=nnnnnn" (the residual
                      6:  * slew from adjtime()).
                      7:  *
                      8:  * Compile this with bsdcc and run it as root!
                      9:  */
                     10: #include <signal.h>
                     11: #include <sys/time.h>
                     12: #include <time.h>
                     13: #include <stdio.h>
                     14: 
                     15: int timeout();
                     16: struct timeval adjustment, result;
                     17: 
                     18: int
                     19: main (
                     20:        int argc,
                     21:        char *argv[]
                     22:        )
                     23: {
                     24:        struct itimerval value, oldvalue;
                     25:        int i;
                     26:        time_t curtime;
                     27: 
                     28:        curtime = time(0);
                     29:        printf("Starting: %s", ctime(&curtime));
                     30:        value.it_interval.tv_sec = value.it_value.tv_sec = 1;
                     31:        value.it_interval.tv_usec = value.it_value.tv_usec = 0;
                     32:        adjustment.tv_sec = 0;
                     33:        adjustment.tv_usec = -2000;
                     34:        signal(SIGALRM, timeout);
                     35:        setitimer(ITIMER_REAL, &value, &oldvalue);
                     36:        for (i=0; i<10; i++) {
                     37:                pause();
                     38:        }
                     39: }
                     40: 
                     41: int
                     42: timeout(
                     43:        int sig,
                     44:        int code,
                     45:        struct sigcontext *scp
                     46:        )
                     47: {
                     48:        signal (SIGALRM, timeout);
                     49:        if (adjtime(&adjustment, &result)) 
                     50:            printf("adjtime call failed\n");
                     51:        if (result.tv_sec != 0 || result.tv_usec != 0) {
                     52:                printf("result.u = %d.%06.6d  ", (int) result.tv_sec,
                     53:                       (int) result.tv_usec);
                     54:        }
                     55: }