libgloss/crx/time.c

   1 /* time.c -- Implementation of the low-level time() routine
   2  *
   3  * Copyright (c) 2004 National Semiconductor Corporation
   4  *
   5  * The authors hereby grant permission to use, copy, modify, distribute,
   6  * and license this software and its documentation for any purpose, provided
   7  * that existing copyright notices are retained in all copies and that this
   8  * notice is included verbatim in any distributions. No written agreement,
   9  * license, or royalty fee is required for any of the authorized uses.
  10  * Modifications to this software may be copyrighted by their authors
  11  * and need not follow the licensing terms described here, provided that
  12  * the new terms are clearly indicated on the first page of each file where
  13  * they apply.
  14  */
  15
  16 #include <unistd.h>
  17 #include <time.h>
  18 #include <errno.h>
  19 #include <sys/time.h>
  20 #include <sys/times.h>
  21 #include <sys/syscall.h>
  22
  23 time_t _Time (time_t *timer)
  24 {
  25   HOST_SERVICE (SVC_TIME);
  26 }
  27
  28 time_t time (time_t *tod)
  29 {
  30   time_t t = _Time (NULL);
  31
  32   if (tod)
  33     *tod = t;
  34
  35   return (t);
  36 }
  37
  38 /* _times -- no clock, so return an error.  */
  39 clock_t times (struct tms *buf)
  40 {
  41   errno = EINVAL;
  42   return (-1);
  43 }
  44
  45 /* _gettimeofday -- implement in terms of time.  */
  46 int gettimeofday (struct timeval *tv, void *tzvp)
  47 {
  48   struct timezone *tz = tzvp;
  49   if (tz)
  50     tz->tz_minuteswest = tz->tz_dsttime = 0;
  51
  52   tv->tv_usec = 0;
  53   tv->tv_sec = time (0);
  54   return 0;
  55 }
  56