#!/sbin/openrc-run # Copyright 1999-2019 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 alsastatedir=/var/lib/alsa alsascrdir=/etc/alsa.d alsahomedir=/run/alsasound extra_commands="save restore" depend() { need localmount after bootmisc modules isapnp coldplug hotplug } if [ "$(readlink -e `which modprobe` | sed 's@.*/@@')" = "kmod" ] ; then HAS_KMOD="true" else HAS_KMOD="false" fi load_modules() { # List of drivers for each card. if ${HAS_KMOD} ; then local DRIVERS="$(modprobe -c | sed -n -e 's/^alias .*\(snd_card_[[:digit:]]\+\) .*/\1/p')" else local DRIVERS="$(modprobe -c | sed -n -e 's/^alias \(snd-card-[[:digit:]]\+\) .*/\1/p')" fi # Fall back on the automated aliases if we don't have ALSA configured properly... if [ -z "${DRIVERS}" ] && \ ( [ ! -r /proc/asound/cards ] || grep -q ' no soundcards ' /proc/asound/cards 2>/dev/null ) ; then ewarn "Could not detect custom ALSA settings. Loading all detected alsa drivers." DRIVERS="$(modprobe -c | sed -n -e '/^alias pci:.* snd.*/ s/^alias pci:[^ ]* \(.*\)/\1/p' | sort | uniq)" if [ -z "${DRIVERS}" ] ; then eerror "Unable to find any ALSA drivers. Have you compiled alsa-drivers correctly?" fi fi if [ "${ENABLE_OSS_EMUL}" = "yes" ] ; then DRIVERS="${DRIVERS} $(find /lib/modules/`uname -r` -type f -name "snd*.ko" | sed -n -e '/snd.*oss/ s:.*\/\([[:alnum:]_-]\+\).ko:\1:p')" fi # We want to ensure snd-seq is loaded as it is needed for things like # timidity even if we don't use a real sequencer. DRIVERS="${DRIVERS} $(find /lib/modules/`uname -r` -type f -name "snd*.ko" | sed -n -e '/snd.seq\./ s:.*\/\([[:alnum:]_-]\+\).ko:\1:p')" # We want to ensure snd-ioctl32 is loaded as it is needed for 32bit # compatibility DRIVERS="${DRIVERS} $(find /lib/modules/`uname -r` -type f -name "snd*.ko" | sed -n -e '/snd.ioctl32\./ s:.*\/\([[:alnum:]_-]\+\).ko:\1:p')" local DRIVER= DMOD= for DRIVER in ${DRIVERS} ; do [ "${DRIVER}" = "off" ] && continue DMOD="$(echo "${DRIVER}" | sed -e 's/-/_/g')" if ! grep -q "^${DMOD} " /proc/modules ; then ebegin "Loading: ${DRIVER}" modprobe ${DRIVER} eend $? fi done if [ -f /proc/asound/seq/drivers ] ; then local SEQUENCERS="$(sed -n -e 's/\([^,]*\),empty,.*/\1/p' /proc/asound/seq/drivers)" local SEQUENCER for SEQUENCER in ${SEQUENCERS} ; do DMOD="$(echo "${SEQUENCER}" | sed -e 's/-/_/g')" if ! grep -q "^${DMOD} " /proc/modules ; then ebegin "Loading: ${SEQUENCER}" modprobe ${SEQUENCER} eend $? fi done fi for DRIVER in ${DRIVERS} do local TMP=${DRIVER##snd-} TMP=${TMP##snd_} if [ -x "${alsascrdir}/${TMP}" ] ; then ebegin "Running: ${alsascrdir}/${TMP}" "${alsascrdir}/${TMP}" eend $? fi done if [ ! -d /proc/asound ] || grep -q ' no soundcards ' /proc/asound/cards ; then eerror "ERROR: Failed to load necessary drivers" return 1 fi } unload_modules_recursive() { local revdeps="$(lsmod | sed -n -e "s/,/ /g" -e "s/^$1 *[0-9]* *[0-9]* \(.*\)/\1/p")" for module in ${revdeps} ; do unload_modules_recursive "${module}" done vebegin "Unloading: $1" modprobe -r "$1" 2>/dev/null veend $? } unload_modules() { # First of all, remove the snd module and all the modules depending # on it, this should remove already most of ALSA modules. lsmod | grep -q "^snd[[:space:]]" && unload_modules_recursive snd # Then find the remaining ones, and handle them too. for module in $(lsmod | sed -n -e 's/^\(snd[^ ]*\) .*/\1/p'); do unload_modules_recursive "${module}" done lsmod | grep -vq "^snd" } terminate() { # # Kill processes holding open sound devices # # DEVS=`find /dev/ -follow -type c -maxdepth 1 -print 2>/dev/null | xargs ls -dils | grep "1*1[46]," | cut -d: -f2 | cut -d" " -f2; echo /proc/asound/dev/*` local ossdevs="/dev/admmidi* /dev/adsp* /dev/amidi* /dev/audio* /dev/dmfm* \ /dev/dmmidi* /dev/dsp* /dev/dspW* /dev/midi0* /dev/mixer* /dev/music \ /dev/patmgr* /dev/sequencer* /dev/sndstat" local alsadevs="/proc/asound/dev/* /dev/sound/* /dev/snd/*" fuser -k ${ossdevs} ${alsadevs} >/dev/null 2>/dev/null # remove all sequencer connections if any [ -f /proc/asound/seq/clients ] && command -v aconnect >/dev/null 2>/dev/null && aconnect --removeall } restore() { ebegin "Restoring Mixer Levels" checkpath -q -d -m 0700 -o root:root ${alsahomedir} || return 1 if [ ! -r "${alsastatedir}/asound.state" ] ; then ewarn "No mixer config in ${alsastatedir}/asound.state, you have to unmute your card!" eend 0 return 0 fi local cards="$(sed -n -e 's/^ *\([[:digit:]]*\) .*/\1/p' /proc/asound/cards)" local CARDNUM for cardnum in ${cards}; do [ -e /dev/snd/controlC${cardnum} ] || sleep 2 [ -e /dev/snd/controlC${cardnum} ] || sleep 2 [ -e /dev/snd/controlC${cardnum} ] || sleep 2 [ -e /dev/snd/controlC${cardnum} ] || sleep 2 alsactl -E HOME="${alsahomedir}" -I -f "${alsastatedir}/asound.state" restore ${cardnum} \ || ewarn "Errors while restoring defaults, ignoring" done for ossfile in "${alsastatedir}"/oss/card*_pcm* ; do [ -e "${ossfile}" ] || continue # We use cat because I'm not sure if cp works properly on /proc local procfile=${ossfile##${alsastatedir}/oss} procfile="$(echo "${procfile}" | sed -e 's,_,/,g')" if [ -e /proc/asound/"${procfile}"/oss ] ; then cat "${ossfile}" > /proc/asound/"${procfile}"/oss fi done eend 0 } save() { ebegin "Storing ALSA Mixer Levels" checkpath -q -d -m 0700 -o root:root ${alsahomedir} || return 1 mkdir -p "${alsastatedir}" if ! alsactl -E HOME="${alsahomedir}" -f "${alsastatedir}/asound.state" store; then eerror "Error saving levels." eend 1 return 1 fi for ossfile in /proc/asound/card*/pcm*/oss; do [ -e "${ossfile}" ] || continue local device=${ossfile##/proc/asound/} ; device=${device%%/oss} device="$(echo "${device}" | sed -e 's,/,_,g')" mkdir -p "${alsastatedir}/oss/" cp "${ossfile}" "${alsastatedir}/oss/${device}" done eend 0 } start() { if [ -f /proc/modules ] && [ "${LOAD_ON_START}" = "yes" ]; then ebegin "Loading ALSA modules" eindent load_modules eoutdent eend $? || return 1 fi if [ ! -d /proc/asound ]; then eerror "ALSA failed to load." eend 1 return 1 elif [ "${RESTORE_ON_START}" = "yes" ]; then restore fi return 0 } stop() { if [ ! -d /proc/asound ] ; then eerror "ALSA is not loaded" return 0 fi [ "${SAVE_ON_STOP}" = "yes" ] && save if [ "${KILLPROC_ON_STOP}" = "yes" ] ; then ebegin "Killing processes using ALSA" terminate eend 0 fi if [ -f /proc/modules ] && [ "${UNLOAD_ON_STOP}" = "yes" ]; then ebegin "Unloading ALSA modules" eindent unload_modules eend $? eoutdent fi return 0 }