2.9BSD - /usr/src/sys/dev/Others/rc.c

   1: /*
   2:  *	SCCS id	@(#)rc.c	2.1 (Berkeley)	8/5/83
   3:  */
   4: 
   5: #include "rc.h"
   6: #if NRC > 0
   7: #include "param.h"
   8: #include <sys/dir.h>
   9: #include <sys/user.h>
  10: #include <sys/conf.h>
  11: #include <sys/seg.h>
  12: #include <sys/time.h>
  13: #include <sys/rcreg.h>
  14: 
  15: extern  struct rcdevice *RCADDR;
  16: 
  17: rcread(dev)
  18: dev_t   dev;
  19: {
  20:     struct tm t;
  21: 
  22:     if(u.u_count != sizeof(t)) {
  23:         u.u_error = EINVAL;
  24:         return;
  25:     }
  26:     t.tm_year = (((RCADDR->rcymd) >> 9) & 0177);
  27:     t.tm_mon = (((RCADDR->rcymd) >> 5) & 017);
  28:     t.tm_mday = ((RCADDR->rcymd) & 037);
  29:     t.tm_hour = (((RCADDR->rchm) >> 8) & 037);
  30:     t.tm_min = ((RCADDR->rchm) & 077);
  31:     t.tm_sec = ((RCADDR->rcsec) & 077);
  32:     t.tm_wday = -1;
  33:     t.tm_yday = -1;
  34:     t.tm_isdst = -1;
  35: 
  36:     if (copyout((caddr_t) &t, (caddr_t) u.u_base, sizeof t) < 0)
  37:           u.u_error = EFAULT;
  38:     u.u_count -= sizeof t;
  39: }
  40: 
  41: rcwrite(dev)
  42: dev_t   dev;
  43: {
  44:     register ymd;
  45:     register hm;
  46:     struct  tm t;
  47: 
  48: 
  49:     if(u.u_count != sizeof(t)) {
  50:         u.u_error = EINVAL;
  51:         return;
  52:     }
  53:     if (copyin((caddr_t) u.u_base, (caddr_t) &t, sizeof(t)) < 0) {
  54:         u.u_error = EINVAL;
  55:         return;
  56:     }
  57:     if (suser()) {
  58:         if((t.tm_year < 0) || (t.tm_year > 99) ||
  59:            (t.tm_mon < 1) || (t.tm_mon > 12) ||
  60:            (t.tm_mday < 1) || (t.tm_mday > 31) ||
  61:            (t.tm_hour < 0) || (t.tm_hour > 23) ||
  62:            (t.tm_min < 0) || (t.tm_min > 59))
  63:             {
  64:             u.u_error = EINVAL;
  65:             return;
  66:         }
  67:         ymd = ((((t.tm_year) << 4) | t.tm_mon) << 5) | t.tm_mday;
  68:         hm = (t.tm_hour << 8) | t.tm_min;
  69: 
  70:         do {                /*set rcymd field*/
  71:             RCADDR->rcymd = ymd;
  72:             while (RCADDR->rcymd != ymd)
  73:                 ;
  74:             RCADDR->rcsec = ymd;
  75:         }  while (RCADDR->rcymd != ymd);
  76: 
  77:         do {                /*set rthm field*/
  78:             RCADDR->rchm = hm;
  79:             while (RCADDR->rchm != hm)
  80:                 ;
  81:             RCADDR->rcsec = hm;
  82:         }  while (RCADDR->rchm != hm);
  83:     }
  84: }
  85: #endif	NRC

Defined functions