aboutsummaryrefslogtreecommitdiffstats
path: root/testing/hdparm/hdparm.initd
diff options
context:
space:
mode:
Diffstat (limited to 'testing/hdparm/hdparm.initd')
-rw-r--r--testing/hdparm/hdparm.initd142
1 files changed, 142 insertions, 0 deletions
diff --git a/testing/hdparm/hdparm.initd b/testing/hdparm/hdparm.initd
new file mode 100644
index 0000000000..89aa4f82b7
--- /dev/null
+++ b/testing/hdparm/hdparm.initd
@@ -0,0 +1,142 @@
+#!/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() {
+ local e=
+ eval e=\$${extra_args}
+ [ -z "${args}${all_args}${e}" ] && return 0
+
+ if [ -n "${args:=${all_args} ${e}}" ] ; then
+ local orgdevice=$(readlink -f "${device}")
+ if [ -b "${orgdevice}" ] ; then
+ ebegin "Running hdparm on ${device}"
+ hdparm ${args} "${device}" > /dev/null
+ eend $?
+ fi
+ fi
+}
+
+scan_devfs() {
+ local extra_args="pata_all_args" device= alias= args=
+
+ # 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
+
+ if [ -z "$args" ] ; then
+ for alias in /dev/discs/* ; do
+ if [ "${alias}"/disc -ef "${device}" ]; then
+ device="${alias}/disc"
+ eval args=\$"$(basename "${alias}")"_args
+ break
+ fi
+ done
+ fi
+
+ 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
+
+ if [ -z "$args" ] ; then
+ for alias in /dev/cdroms/* ; do
+ if [ "${alias}" -ef "${device}" ] ; then
+ device=${alias}
+ eval args=\$"$(basename "${alias}")"_args
+ break
+ fi
+ done
+ fi
+
+ do_hdparm
+ done
+
+ local 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
+ count=$((${count} + 1))
+ done
+}
+
+scan_nondevfs() {
+ # non-devfs compatible system
+ for device in /dev/hd* /dev/sd* ; do
+ [ -e "${device}" ] || continue
+ case "${device}" in
+ *[0-9]) continue ;;
+ /dev/hd*) extra_args="pata_all_args" ;;
+ /dev/sd*) extra_args="sata_all_args" ;;
+ *) extra_args="" ;;
+ esac
+
+ # check that the block device really exists by
+ # opening it for reading
+ local errmsg= status= nomed=1
+ errmsg=$(export LC_ALL=C ; : 2>&1 <"${device}")
+ status=$?
+ case ${errmsg} in
+ *": No medium found") nomed=0;;
+ esac
+ if [ -b "${device}" ] && [ "${status}" = "0" -o "${nomed}" = "0" ] ; then
+ local conf_var="${device##*/}_args"
+ eval args=\$${conf_var}
+ do_hdparm
+ fi
+ done
+}
+
+start() {
+ if get_bootparam "nohdparm" ; then
+ ewarn "Skipping hdparm init as requested in kernel cmdline"
+ return 0
+ fi
+
+ if [ -e /dev/.devfsd -a -d /dev/ide ] ; then
+ scan_devfs
+ else
+ scan_nondevfs
+ fi
+}