external/bsd/ntp/dist/libntp/buftvtots.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * buftvtots - pull a Unix-format (struct timeval) time stamp out of
   5  *             an octet stream and convert it to a l_fp time stamp.
   6  *             This is useful when using the clock line discipline.
   7  */
   8
   9 #ifdef HAVE_CONFIG_H
  10 #include "config.h"
  11 #endif
  12 #include "ntp_fp.h"
  13 #include "ntp_string.h"
  14 #include "ntp_unixtime.h"
  15
  16 #ifndef SYS_WINNT
  17 int
  18 buftvtots(
  19         const char *bufp,
  20         l_fp *ts
  21         )
  22 {
  23         struct timeval tv;
  24
  25         /*
  26          * copy to adhere to alignment restrictions
  27          */
  28         memcpy(&tv, bufp, sizeof(tv));
  29
  30         /*
  31          * and use it
  32          */
  33         ts->l_ui = tv.tv_sec + (u_long)JAN_1970;
  34         if (tv.tv_usec > 999999)
  35             return 0;
  36         TVUTOTSF(tv.tv_usec, ts->l_uf);
  37         return 1;
  38 }
  39 #else   /* SYS_WINNT */
  40 /*
  41  * Windows doesn't have the tty_clock line discipline, so
  42  * don't look for a timestamp where there is none.
  43  */
  44 int
  45 buftvtots(
  46         const char *bufp,
  47         l_fp *ts
  48         )
  49 {
  50         UNUSED_ARG(bufp);
  51         UNUSED_ARG(ts);
  52
  53         return 0;
  54 }
  55 #endif  /* SYS_WINNT */