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|
#!/sbin/runscript
# METHOD
# ------
# if /dev/ide exists, find all block devices beneath it named disc, cd, or
# generic.
#
# for the disc and cd ones, if there is a a matching /dev/hdX symlink and
# hdX_args is set in the config file, use hdX_args. otherwise, if there is a
# matching /dev/discs/discX or /dev/cdroms/cdromX symlink, and discX_args or
# cdromX_args is set in the config file, use discX_args / cdromX_args. finally,
# if all_args is set in the config file, use that.
#
# for the generic ones, sort them and look for genericX_args in the config file
# or use all_args.
#
# if /dev/ide does not exist, check the /dev/hdX entries, and see which ones
# correspond to real devices by opening them for reading. then check hdX_args
# and all_args in the config file.
#
# for each device considered, if no args are found in the config file, do not
# run hdparm.
depend() {
before bootmisc
}
do_hdparm() {
if [[ ${args:=$all_args} ]] ; then
local orgdevice=$(readlink -f ${device})
if [[ -b ${orgdevice} ]] ; then
ebegin "Running hdparm on ${device}"
hdparm ${args} ${device} > /dev/null
eend $?
fi
fi
}
start() {
if [ -e /dev/.devfs ] && [ -d /dev/ide ]
then
# devfs compatible systems
for device in $(find /dev/ide -name disc)
do
args=''
for alias in /dev/hd?
do
if [ $alias -ef $device ]
then
device=$alias
eval args=\${`basename $alias`_args}
break
fi
done
[ -z "$args" ] && for alias in /dev/discs/*
do
if [ $alias/disc -ef $device ]
then
device=$alias/disc
eval args=\${`basename $alias`_args}
break
fi
done
do_hdparm
done
for device in $(find /dev/ide -name cd)
do
args=''
for alias in /dev/hd?
do
if [ $alias -ef $device ]
then
device=$alias
eval args=\${`basename $alias`_args}
break
fi
done
[ -z "$args" ] && for alias in /dev/cdroms/*
do
if [ $alias -ef $device ]
then
device=$alias
eval args=\${`basename $alias`_args}
break
fi
done
do_hdparm
done
let count=0
# of course, the sort approach would fail here if any of the
# host/bus/target/lun numbers reached 2 digits..
for device in $(find /dev/ide -name generic | sort)
do
eval args=\${generic${count}_args}
do_hdparm
let count=count+1
done
else
# non-devfs compatible system
for device in /dev/hd?
do
# check that the block device really exists
# by opening it for reading
local errmsg status
errmsg=$(: 2>&1 <$device)
status=$?
if [[ -b $device ]] && [[ ${status} == 0 || ${errmsg} == *": No medium found" ]]
then
eval args=\${`basename $device`_args}
do_hdparm
fi
done
fi
}
|
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