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2006-11-29
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2KB
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69 lines
#!/bin/bash
#
# Deconfigures a ccw interface.
# $Id: hwdown-ccw 1415 2006-02-16 09:16:36Z hare $
#
# Currently handles ctc, qeth, and dasd devices.
# lcs and escon support untested.
#
SCRIPTNAME=${0##*/}
CONFIG=$1
HWDESC=$2
# Read in common functions
. ./scripts/functions
test -r ./config && . ./config
if test -z "$SYSFS"; then
message "sysfs not mounted, aborting."
exit 1
fi
# Set defaults
if [ -z "$HWD_DEVICEPATH" ]; then
HWD_DEVICEPATH=${SYSFS}/bus/ccwgroup/devices/${HWD_BUSID}
fi
if [ ! -d "$HWD_DEVICEPATH" ]; then
message "No hardware devicepath given, cannot configure"
exit 1
fi
# Check whether it is a group device
if test -d $HWD_DEVICEPATH/group_device; then
HWD_DEVICEPATH=$HWD_DEVICEPATH/group_device
fi
# Deconfigure interface
message_n "Deconfigure device $HWD_BUSID: "
read _online < $HWD_DEVICEPATH/online
# Device configured, set it offline
if [ $_online -ne 0 ]; then
echo "0" > $HWD_DEVICEPATH/online
debug "Setting device $HWD_BUSID offline"
fi
# Re-read for failures
read _online < $HWD_DEVICEPATH/online
if [ $_online -ne 0 ]; then
message "failed."
else
# Check whether we need to ungroup it
if test -w $HWD_DEVICEPATH/ungroup ; then
# We cannot use hotplug events here as the
# devices are already gone from sysfs
echo "1" > $HWD_DEVICEPATH/ungroup
debug "Device group $HWD_BUSID deconfigured"
fi
# Check whether we need to reset DIAG access
if test -w $HWD_DEVICEPATH/use_diag ; then
echo "0" > $HWD_DEVICEPATH/use_diag
debug "Reset DIAG access for $HWD_BUSID"
fi
message "ok."
fi