#!/bin/sh

##
# Change the tunable parameters
##

. /etc/rc.common
ARCH=$(uname -p)


SetBootCommand()
{
    local BootCommand="$*"

    if [ $ARCH = "powerpc" ]; then
        if nvram "${BootArgsVar}"="${BootCommand}"; then
	    shutdown -r now
        else
	    echo "Warning: Failed to set boot-command"
	    echo "Warning: Continuing startup"
        fi
    fi
}

StartService ()
{
    ConsoleMessage "Tuning system"

    ##
    # Set boot-command option for server configuration
    ##

    if [ -z "${SERVER:=-NO-}" ]; then
	if [ "${AFPSERVER}" = "-YES-" ] ||
	   [ "${QTSSERVER}" = "-YES-" ]; then
	    SERVER=-YES-
	else
	    SERVER=-NO-
	fi
    fi

    NewWorld=$(sysctl hw.epoch | sed 's/^hw.epoch = //')

    if [ "${NewWorld}" = "1" ]; then
	BootArgsVar=boot-args
    else
	BootArgsVar=boot-command
    fi

    if [ $ARCH = "powerpc" ]; then
	if boot_command=$(nvram "${BootArgsVar}" | cut -f 2-); then

	    case ${SERVER} in

	      -YES-)
		if [ -n "$( echo ${boot_command} | sed -n '/srv=/p' )" ]; then
		    if [ -n "$( echo ${boot_command} | sed -n '/srv=0/p' )" ]; then
			ConsoleMessage "Rebooting with server configuration"
			SetBootCommand $(echo ${boot_command} | sed 's/srv=0/srv=1/')
		    fi
		else
		    ConsoleMessage "Rebooting with server configuration"
		    SetBootCommand ${boot_command} srv=1
		fi
		;;
    
	      -NO-)
		if [ -n "$( echo ${boot_command} | sed -n '/srv=1/p' )" ]; then
		    ConsoleMessage "Rebooting without server configuration"
		    SetBootCommand $(echo ${boot_command} | sed 's/srv=1//')
		fi
		;;
    
	    esac
    
	    nvram boot-command
    
	else
	    echo "Warning: Unable to access OpenFirmware to set boot-command"
	fi
    fi

    # Scale number of vnodes based on RAM
    # base memory is 32MB and each 32MB gets 512 vnodes

	 base=32
    addvnodes=512
	  mem=$(hostinfo | sed -n '/Primary memory available/p' | sed -e 's/Primary memory available: *//' -e 's/\.[0-9][0-9] *megabytes.$//')
       excess=$((${mem} - ${base}))
       factor=$((${excess} / ${base}))
    defvnodes=$(sysctl kern.maxvnodes | sed -e 's/^[^0-9]*//')
    newvnodes=$((${addvnodes} * ${factor} + ${defvnodes}))

    sysctl -w kern.maxvnodes=${newvnodes}

    # Set systemV shared memory limits and enable the service.
    # If you want to set to any other values, set all the 5 values.
    # The last set value will enble the access to the service
    # The defaults are for 4M. shmall is in terms of pages and rest in bytes

    sysctl -w kern.sysv.shmmax=4194304
    sysctl -w kern.sysv.shmmin=1
    sysctl -w kern.sysv.shmmni=32
    sysctl -w kern.sysv.shmseg=8
    sysctl -w kern.sysv.shmall=1024


    if [ -f /System/Library/CoreServices/ServerVersion.plist -o "${SERVER:=-NO-}" = "-YES-" ]; then
	    sysctl -w kern.maxproc=2048
    fi
}

StopService ()
{
    return 0;
}

RestartService () { StartService; }

RunService "$1"