net/openntpd/patches/002-save_freq_drift.patch

   1 --- openntpd-3.9p1/ntpd.h       2006-05-14 07:29:21.000000000 +0200
   2 +++ openntpd-3.9p1new/ntpd.h    2007-02-03 23:51:56.000000000 +0100
   3 @@ -34,6 +34,7 @@
   4  #define        NTPD_USER       "_ntp"
   5  #endif
   6  #define        CONFFILE        SYSCONFDIR "/ntpd.conf"
   7 +#define DRIFTFILE      "/var/db/ntpd.drift"
   8
   9  #define        READ_BUF_SIZE           4096
  10
  11 --- openntpd-3.9p1/ntpd.c       2006-05-14 07:29:23.000000000 +0200
  12 +++ openntpd-3.9p1new/ntpd.c    2007-02-04 00:00:36.000000000 +0100
  13 @@ -45,6 +45,7 @@
  14  int            dispatch_imsg(struct ntpd_conf *);
  15  int            ntpd_adjtime(double);
  16  void           ntpd_settime(double);
  17 +void   readfreq(void);
  18
  19  volatile sig_atomic_t   quit = 0;
  20  volatile sig_atomic_t   reconfig = 0;
  21 @@ -153,7 +154,8 @@
  22         chld_pid = ntp_main(pipe_chld, &conf);
  23
  24         setproctitle("[priv]");
  25 -
  26 +       readfreq();
  27 +
  28         signal(SIGTERM, sighdlr);
  29         signal(SIGINT, sighdlr);
  30         signal(SIGCHLD, sighdlr);
  31
  32 --- openntpd-3.9p1/openbsd-compat/port-linux.c  2007-02-03 20:52:20.000000000 +0100
  33 +++ openntpd-3.9p1new/openbsd-compat/port-linux.c       2007-02-04 01:02:16.000000000 +0100
  34 @@ -33,6 +33,49 @@
  35  /* maximum change to skew per adjustment, in PPM */
  36  #define MAX_SKEW_DELTA 5.0
  37
  38 +void
  39 +writefreq(double d)
  40 +{
  41 +       int r;
  42 +       FILE *fp;
  43 +
  44 +       fp = fopen(DRIFTFILE, "w");
  45 +       if (fp == NULL)
  46 +       {
  47 +               log_warn("opening drift file for writing failed");
  48 +               return;
  49 +       }
  50 +
  51 +       fprintf(fp, "%e\n", d);
  52 +       r = ferror(fp);
  53 +       if (fclose(fp) != 0 || r != 0)
  54 +       {
  55 +               unlink(DRIFTFILE);
  56 +               log_warn("saving freq drift failed");
  57 +       }
  58 +}
  59 +
  60 +void
  61 +readfreq(void)
  62 +{
  63 +       FILE *fp;
  64 +       double d;
  65 +       struct timex tmx;
  66 +
  67 +       fp = fopen(DRIFTFILE, "r");
  68 +       if (fp == NULL)
  69 +               return;
  70 +
  71 +       if (fscanf(fp, "%le", &d) == 1)
  72 +       {
  73 +               tmx.freq = (long)(d * ADJTIMEX_FREQ_SCALE);
  74 +               tmx.modes = ADJ_FREQUENCY;
  75 +               if (adjtimex(&tmx) == -1)
  76 +                       log_warn("adjtimex set freq failed");
  77 +       }
  78 +       fclose(fp);
  79 +}
  80 +
  81  int
  82  _compat_adjtime(const struct timeval *delta, struct timeval *olddelta)
  83  {
  84 @@ -93,6 +136,8 @@
  85                 tmx.modes = ADJ_FREQUENCY;
  86                 if (adjtimex(&tmx) == -1)
  87                         log_warn("adjtimex set freq failed");
  88 +
  89 +               writefreq( tskew );
  90         }
  91
  92         log_debug("interval %0.3lf skew %0.3lf total skew %0.3lf", interval,