mirror of
https://gitlab.alpinelinux.org/alpine/aports.git
synced 2025-10-15 01:11:58 +02:00
143 lines
3.3 KiB
Plaintext
143 lines
3.3 KiB
Plaintext
#!/sbin/runscript
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# METHOD
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# ------
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# if /dev/ide exists, find all block devices beneath it named disc, cd, or
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# generic.
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#
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# for the disc and cd ones, if there is a a matching /dev/hdX symlink and
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# hdX_args is set in the config file, use hdX_args. otherwise, if there is a
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# matching /dev/discs/discX or /dev/cdroms/cdromX symlink, and discX_args or
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# cdromX_args is set in the config file, use discX_args / cdromX_args. finally,
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# if all_args is set in the config file, use that.
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#
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# for the generic ones, sort them and look for genericX_args in the config file
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# or use all_args.
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#
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# if /dev/ide does not exist, check the /dev/hdX entries, and see which ones
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# correspond to real devices by opening them for reading. then check hdX_args
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# and all_args in the config file.
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#
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# for each device considered, if no args are found in the config file, do not
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# run hdparm.
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depend() {
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before bootmisc
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}
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do_hdparm() {
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local e=
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eval e=\$${extra_args}
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[ -z "${args}${all_args}${e}" ] && return 0
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if [ -n "${args:=${all_args} ${e}}" ] ; then
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local orgdevice=$(readlink -f "${device}")
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if [ -b "${orgdevice}" ] ; then
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ebegin "Running hdparm on ${device}"
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hdparm ${args} "${device}" > /dev/null
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eend $?
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fi
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fi
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}
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scan_devfs() {
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local extra_args="pata_all_args" device= alias= args=
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# devfs compatible systems
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for device in $(find /dev/ide -name disc) ; do
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args=''
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for alias in /dev/hd? ; do
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if [ "${alias}" -ef "${device}" ] ; then
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device=${alias}
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eval args=\$"$(basename "${alias}")"_args
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break
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fi
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done
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if [ -z "$args" ] ; then
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for alias in /dev/discs/* ; do
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if [ "${alias}"/disc -ef "${device}" ]; then
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device="${alias}/disc"
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eval args=\$"$(basename "${alias}")"_args
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break
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fi
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done
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fi
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do_hdparm
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done
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for device in $(find /dev/ide -name cd) ; do
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args=''
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for alias in /dev/hd? ; do
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if [ "${alias}" -ef "${device}" ] ; then
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device=${alias}
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eval args=\$"$(basename "${alias}")"_args
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break
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fi
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done
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if [ -z "$args" ] ; then
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for alias in /dev/cdroms/* ; do
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if [ "${alias}" -ef "${device}" ] ; then
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device=${alias}
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eval args=\$"$(basename "${alias}")"_args
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break
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fi
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done
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fi
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do_hdparm
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done
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local count=0
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# of course, the sort approach would fail here if any of the
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# host/bus/target/lun numbers reached 2 digits..
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for device in $(find /dev/ide -name generic | sort) ; do
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eval args=\$generic${count}_args
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do_hdparm
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count=$((${count} + 1))
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done
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}
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scan_nondevfs() {
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# non-devfs compatible system
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for device in /dev/hd* /dev/sd* ; do
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[ -e "${device}" ] || continue
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case "${device}" in
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*[0-9]) continue ;;
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/dev/hd*) extra_args="pata_all_args" ;;
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/dev/sd*) extra_args="sata_all_args" ;;
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*) extra_args="" ;;
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esac
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# check that the block device really exists by
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# opening it for reading
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local errmsg= status= nomed=1
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errmsg=$(export LC_ALL=C ; : 2>&1 <"${device}")
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status=$?
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case ${errmsg} in
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*": No medium found") nomed=0;;
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esac
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if [ -b "${device}" ] && [ "${status}" = "0" -o "${nomed}" = "0" ] ; then
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local conf_var="${device##*/}_args"
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eval args=\$${conf_var}
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do_hdparm
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fi
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done
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}
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start() {
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if get_bootparam "nohdparm" ; then
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ewarn "Skipping hdparm init as requested in kernel cmdline"
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return 0
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fi
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if [ -e /dev/.devfsd -a -d /dev/ide ] ; then
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scan_devfs
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else
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scan_nondevfs
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fi
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}
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