Attachment 217657 Details for Bug 386555

storage-fixup

storage-fixup (text/plain), 4.02 KB, created by Tejun Heo on 2008-05-23 01:20:19 UTC

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Creator: Tejun Heo

Created: 2008-05-23 01:20:19 UTC

Size: 4.02 KB

patch

obsolete

>#! /bin/bash
>#
># storage-fixup			- Tejun Heo <teheo@suse.de>
>#
># Script to issue fix up commands for weird disks.  This is primarily
># to adjust ATA APM setting.  Some laptop BIOSen set this value too
># aggressively causing frequent head unloads which can kill the drive
># quickly.  This script should be called during boot and resume.  It
># examines rules from /etc/stroage-fixup.conf and executes matching
># commands.
>#
># In stroage-fixup.conf, empty lines and lines starting w/ # are
># ignored.  Each line starts with rule, dmi, hal or act.
>#
># rule RULENAME
>#	Starts a rule.  $RULENAME can't contain whitespaces.
>#
># dmi KEY VALUE
>#	Checks whether DMI value for KEY matches VALUE.  If not, the
>#	rule is skipped.
>#
># hal KEY VALUE
>#	Checks whether there are devices which has KEY value matching
>#	VALUE.  storage-fixup determines applies actions to devices
>#	which match all hal matches, so all rules should have at least
>#	one hal match.
>#
># act ACTION
>#	Executes ACTION on matched devices.  ACTION can contain $DEV
>#	which will be substituted with device file of matching device.
>#
># For example, the following (useless) rule disables APM on the first
># harddrive of my machine.
>#
># rule p5w64
># dmi baseboard-product-name	P5W64 WS Pro
># dmi baseboard-manufacturer	ASUSTeK Computer INC.
># hal storage.model		WDC WD5000YS-01M
># hal storage.serial		SATA_WDC_WD5000YS-01_WD-WMANU1217262
># act hdparm -B 255 $DEV
>#
>
>conf_file=${CONF_FILE:-/etc/storage-fixup.conf}
>hal_find_by_property=${HAL_FIND_BY_PROPERTY:-hal-find-by-property}
>hal_get_property=${HAL_GET_PROPERTY:-hal-get-property}
>dmidecode=${DMIDECODE:-dmidecode}
>
>verbose=0
>lineno=0
>skip=0
>rule_name=""
>declare -a dev_ids
>newline=$'\n'
>
>log() {
>    echo "storage-fixup: $@"
>}
>
>warn() {
>   log "$@" 1>&2
>}
>
>debug() {
>    if [ $verbose -ne 0 ]; then
>	warn "$@"
>    fi
>}
>
>#
># Match functions - do_dmi() and do_hal() - execute DMI and HAL
># matches respectively.  Return value 0 indicates match, 1 invalid
># match (triggers warning) and 2 mismatch.
>#
>do_dmi() {
>    local val
>
>    if [ -z "$1" -o -z "$2" ]; then
>	return 1
>    fi
>
>    val=$($dmidecode --string "$1")
>    if [ "$?" -ne 0 ]; then
>	return 1
>    fi
>
>    if [ "$val" = "$2" ]; then
>	debug "Y $lineno $rule_name dmi $1=$2"
>	return 0;
>    fi
>
>    debug "N $lineno $rule_name dmi $1=$2"
>    return 2
>}
>
>do_hal() {
>    local i out ifs_store append=0
>
>    if [ -z "$1" -o -z "$2" ]; then
>	return 1
>    fi
>
>    if [ ${#dev_ids[@]} -eq 0 ]; then
>	append=1
>    fi
>
>    #
>    # bash really isn't a good programming language for this kind of
>    # stuff and makes it look much more complex than it needs to be.
>    # The following loop executes hal-find-by-property and ands the
>    # result with the previous result.
>    #
>    ifs_store="$IFS"
>    IFS="$newline"
>    dev_ids=(
>	$($hal_find_by_property --key "$1" --string "$2" \
>	    | while read found; do
>		if [ $append -ne 0 ]; then
>		    echo "$found"
>		else
>		    for id in "${dev_ids[@]}"; do
>			if [ "$id" = "$found" ]; then
>			    echo "$found"
>			    break
>			fi
>		    done
>		fi
>	    done))
>    IFS="$ifs_store"
>
>    if [ "$?" -ne 0 ]; then
>	debug "N $lineno $rule_name hal $1=$2"
>	return 2
>    fi
>
>    debug "Y $lineno $rule_name hal nr_devs=${#dev_ids[@]} $1=$2"
>
>    return 0
>}
>
>do_act() {
>    local id dev
>
>    for id in "${dev_ids[@]}"; do
>	if ! DEV=$($hal_get_property --udi "$id" --key block.device); then
>	    warn "can't find device node for $id"
>	    continue
>	fi
>
>	eval log "$rule_name: executing \"$1\""
>	eval "$1"
>    done
>
>    return 0
>}
>
>while read f0 f1 f2; do
>    true $((lineno++))
>    if [ -z ${f0###*} ]; then
>	continue
>    fi
>
>    if [ "$f0" = rule ]; then
>	rule_name=$f1
>	skip=0
>	dev_ids=()
>	continue
>    fi
>
>    if [ $skip -ne 0 ]; then
>	continue
>    fi
>
>    case "$f0" in
>    dmi)
>	    do_dmi "$f1" "$f2"
>	    ;;
>    hal)
>	    do_hal "$f1" "$f2"
>	    ;;
>    act)
>	    do_act "$f1 $f2"
>	    ;;
>    *)
>	    false
>	    ;;
>    esac
>
>    ret=$?
>    if [ $ret -ne 0 ]; then
>	if [ $ret -eq 1 ]; then
>	    warn "malformed line $lineno \"$f0 $f1 $f2\","\
>	         "skipping rule $rule_name" 2>&1
>	fi
>	skip=1
>    fi
>done < $conf_file

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