org.handhelds.familiar/packages/busybox/files/hwclock.sh

   1 #!/bin/sh
   2 # hwclock.sh Set system clock to hardware clock, according to the UTC
   3 #               setting in /etc/default/rcS (see also rcS(5)).
   4 #
   5 # WARNING:      If your hardware clock is not in UTC/GMT, this script
   6 #               must know the local time zone. This information is
   7 #               stored in /etc/localtime. This might be a problem if
   8 #               your /etc/localtime is a symlink to something in
   9 #               /usr/share/zoneinfo AND /usr isn't in the root
  10 #               partition! The workaround is to define TZ either
  11 #               in /etc/default/rcS, or in the proper place below.
  12
  13 [ ! -x /sbin/hwclock ] && exit 0
  14
  15 . /etc/default/rcS
  16
  17 case "$1" in
  18         start)
  19                 if [ "$VERBOSE" != no ]
  20                 then
  21                         echo "System time was `date`."
  22                         echo "Setting the System Clock using the Hardware Clock as reference..."
  23                 fi
  24
  25                 if [ "$HWCLOCKACCESS" != no ]
  26                 then
  27                         if [ -z "$TZ" ]
  28                         then
  29                            hwclock --hctosys
  30                         else
  31                            TZ="$TZ" hwclock --hctosys
  32                         fi
  33                 fi
  34
  35                 if [ "$VERBOSE" != no ]
  36                 then
  37                         echo "System Clock set. System local time is now `date`."
  38                 fi
  39                 ;;
  40         stop|restart|reload|force-reload)
  41                 #
  42                 # Updates the Hardware Clock with the System Clock time.
  43                 # This will *override* any changes made to the Hardware Clock.
  44                 #
  45                 # WARNING: If you disable this, any changes to the system
  46                 #          clock will not be carried across reboots.
  47                 #
  48                 if [ "$VERBOSE" != no ]
  49                 then
  50                         echo "Saving the System Clock time to the Hardware Clock..."
  51                 fi
  52                 if [ "$HWCLOCKACCESS" != no ]
  53                 then
  54                         hwclock --systohc
  55                 fi
  56                 if [ "$VERBOSE" != no ]
  57                 then
  58                         echo "Hardware Clock updated to `date`."
  59                 fi
  60                 exit 0
  61                 ;;
  62         show)
  63                 if [ "$HWCLOCKACCESS" != no ]
  64                 then
  65                         hwclock --show
  66                 fi
  67                 ;;
  68         *)
  69                 echo "Usage: hwclock.sh {start|stop|show|reload|restart}" >&2
  70                 echo "       start sets kernel (system) clock from hardware (RTC) clock" >&2
  71                 echo "       stop and reload set hardware (RTC) clock from kernel (system) clock" >&2
  72                 exit 1
  73                 ;;
  74 esac