Someone

#!/bin/sh

set -e

. /lib/lsb/init-functions
. /etc/default/rcS

#In certian cases you may wish to run this script twice.  Once at S07
#and once later in the boot process. If you do this call /etc/init.d/hdparm
#again from rcS.d with a name such as S27hdparm.second.
#
#See /usr/share/doc/hdparm/README.Debian for more details.

case "$0" in
  *hdparm)
    FIRST=yes
    ;;
  *)
    FIRST=no
    ;;
esac

MYNAME="$0"

report()
{
  echo "${MYNAME}: $*"
}

report_error()
{
  echo "${MYNAME}: Error: $*" >&2
}

report_error_and_exit()
{
  report_error "$*.  Exiting."
  exit 1
}

case $1 in
  start|restart|reload|force-reload)
    ;;
  stop) 
    exit 0
    ;;
  *)
    log_success_msg "Usage: $0 {stop|start|restart|reload|force-reload}"
    exit 1
    ;;
esac

if grep -w -q "nohdparm" /proc/cmdline ; then
  log_success_msg "Skipping setup of disc parameters as specified..."
  exit 0
fi

raidstat=OK
if [ -e /proc/mdstat ]; then
  if grep -iq resync /proc/mdstat; then
    raidstat=RESYNC
  fi
elif [ -e /proc/rd/status ]; then
  raidstat=`cat /proc/rd/status`
fi

if ! [ "$raidstat" = 'OK' ]; then
  log_warning_msg "RAID status not OK.  Exiting."
  exit 0
fi

log_begin_msg "Setting disc parameters..."

DISC=
DEFAULT=
OPTIONS=
DEF_QUIET=
OPT_QUIET=

#  set_option() adds $1 to the $OPTIONS list if in a disk stanza
#             and adds $1 to the $DEFAULT list if not in a disk stanza
#
#  the block beginning:
#        if test x${i%${i#??}} != x${1%${1#??}}; then
#  checks to see if $1 is already in the list and
#    if so removes the first instance

set_option() 
{
  if test -n "$DISC"; then
    NEW_OPT=
    for i in $OPTIONS; do
      if test x${i%${i#??}} != x${1%${1#??}}; then
        NEW_OPT="$NEW_OPT $i"
      else
        NEW_OPT=${NEW_OPT%-q}
      fi
    done
    OPTIONS="$NEW_OPT $OPT_QUIET $1"
  else
    NEW_DEF=
    for i in $DEFAULT; do
      if test x${i%${i#??}} != x${1%${1#??}}; then
        NEW_DEF="$NEW_DEF $i"
      else
        NEW_DEF=${NEW_DEF%-q}
      fi
    done
    DEFAULT="$NEW_DEF $DEF_QUIET $1"
  fi
}

eval_value() 
{
  case $1 in
    off|0) 
      set_option "$2"0
       ;;
    on|1) 
      set_option "$2"1
      ;;
    *) 
      return 1
      ;;
  esac
}

# Get blocks as far as the drive's write cache.
/bin/sync

# Set options for a group of disks in /etc/default/hdparm
[ -e /etc/default/hdparm ] && . /etc/default/hdparm

if [ -n "$harddisks" -a -n "$hdparm_opts" ]; then
  for drive in $harddisks; do 
    /sbin/hdparm -q -f $drive
    hdparm -q $hdparm_opts -q $drive
    [ "$VERBOSE" != no ] && log_success_msg "Found enabled disk: $drive"
  done
fi

egrep -v '^[[:space:]]*(#|$)' /etc/hdparm.conf | while read KEY SEP VALUE; do
 if [ "$NEXT_LINE" != 'go' ]; then
  case $SEP in
    '{')
       case $KEY in
         command_line)
           NEXT_LINE=go
           unset DISC
           unset OPTIONS
           unset OPT_QUIET
           ;;
         *)
           DISC=$KEY
           OPTIONS=$DEFAULT
           OPT_QUIET=$DEF_QUIET
           WAS_RUN=0
           ;;
       esac
       ;;
    =)
       case $KEY in
         read_ahead_sect) 
	   set_option -a$VALUE
	   ;;
	 lookahead) 
	   eval_value $VALUE -A
	   ;;
	 bus) 
	   eval_value $VALUE -b
	   ;;
	 apm) 
	   set_option -B$VALUE
	   ;;
	 io32_support) 
	   set_option -c$VALUE
	   ;;
	 dma) 
	   eval_value $VALUE -d
	   ;;
	 defect_mana) 
	   eval_value $VALUE -D
	   ;;
	 cd_speed) 
	   set_option -E$VALUE
	   ;;
	 mult_sect_io) 
	   set_option -m$VALUE
	   ;;
	 prefetch_sect) 
	   set_option -P$VALUE
	   ;;
	 read_only) 
	   eval_value $VALUE -r
	   ;;
	 spindown_time) 
	   set_option -S$VALUE
	   ;;
	 interrupt_unmask) 
	   eval_value $VALUE -u
	   ;;
	 write_cache) 
	   eval_value $VALUE -W
	   ;;
	 transfer_mode) 
	   set_option -X$VALUE
	   ;;
	 acoustic_management)
	   set_option -M$VALUE
	   ;;
         keep_settings_over_reset)
           eval_value $VALUE -k
          ;;
         keep_features_over_reset)
           eval_value $VALUE -K
          ;;
         chipset_pio_mode)
           set_option -p$VALUE
          ;;
	 *)
	   log_failure_msg "Unknown option $KEY!"
	   exit 1
	   ;;
       esac
    ;;
    "")
       case $KEY in
         })
	   if [ -z "$DISC" ]; then
             if [ "$WAS_RUN" != 1 ]; then
	       log_failure_msg "No disk enabled. Exiting..."
	       exit 1
             fi
	   fi
	   if [ -n "$OPTIONS" ]; then
	     # Flush the drive's internal write cache to the disk.
	     /sbin/hdparm -q -f $DISC

	     /sbin/hdparm $OPTIONS $DISC
	     [ "$VERBOSE" != no ] && log_success_msg "Found enabled disk: $DISC"
	   fi       
           ;;
         quiet)
	   if [ -n "$DISC" ]; then
	     OPT_QUIET=-q
	   else
	     DEF_QUIET=-q
	   fi
           ;;
         standby) 
           set_option -y
	   ;;
         sleep) 
           set_option -Y
	   ;;
         disable_seagate) 
           set_option -Z
	   ;;
         *)
	   log_failure_msg "Unknown option $KEY!"
	   exit 1
	   ;;
       esac
	   ;;
   *)
     log_failure_msg "Unknown separator $SEP!"
     exit 1
     ;;
  esac
else
  $KEY $SEP $VALUE
  NEXT_LINE=no-go
  WAS_RUN=1
fi
done

log_end_msg 0