nut: Reorganize nut-server to clarify nut-driver
Clarify the different between the common nut-driver portions of nut-server and the nut-server (upsd) proper. nut-driver can't be used without nut-server so there is no compelling reason to split into a separate package, but the reorganization makes such a move easier and makes it clear what each bit is for. While we continue to use a single initscript, it's a properly procdified one which handles the upsd daemon as a different instance than the driver instances. This resolves a race condition in which upsd and drivers fail to start do to a degree of interdepedence. Also properly 'procd'ifies the nut-server initscript. Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
This commit is contained in:
Daniel F. Dickinson
parent
5790053eba
commit
ceff68837d
3 changed files with 168 additions and 64 deletions
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@ -63,6 +63,7 @@ define Package/nut/install
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endef
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define Package/nut-server/install
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# Server portion
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$(INSTALL_DIR) $(1)/etc/nut
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$(INSTALL_DIR) $(1)/usr/sbin
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$(INSTALL_DIR) $(1)/etc/init.d
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@ -70,14 +71,15 @@ define Package/nut-server/install
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$(INSTALL_DIR) $(1)/etc/init.d
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$(INSTALL_BIN) ./files/nut-server.init $(1)/etc/init.d/nut-server
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/upsd $(1)/usr/sbin
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/upsdrvctl $(1)/usr/sbin
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/share/nut/cmdvartab $(1)/usr/share/nut/
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/share/nut/driver.list $(1)/usr/share/nut/
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$(INSTALL_DIR) $(1)/etc/config
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$(INSTALL_CONF) ./files/nut_server $(1)/etc/config/nut_server
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ln -sf /var/etc/nut/ups.conf $(1)/etc/nut/ups.conf
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ln -sf /var/etc/nut/upsd.users $(1)/etc/nut/upsd.users
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ln -sf /var/etc/nut/upsd.conf $(1)/etc/nut/upsd.conf
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# Driver common portion
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/upsdrvctl $(1)/usr/sbin
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/share/nut/driver.list $(1)/usr/share/nut/
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ln -sf /var/etc/nut/ups.conf $(1)/etc/nut/ups.conf
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endef
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define Package/nut-common
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@ -110,6 +112,7 @@ define Package/nut-server
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$(call Package/nut/Default)
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TITLE+= (server)
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DEPENDS:=nut +nut-common
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USERID:=nut=113:nut=113
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endef
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define Package/nut-server/description
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@ -123,9 +126,9 @@ endef
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define Package/nut-server/conffiles
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/etc/config/nut_server
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/etc/nut/ups.conf
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/etc/nut/upsd.conf
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/etc/nut/upsd.users
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/etc/nut/ups.conf
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endef
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define Package/nut-upsmon
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@ -349,7 +352,7 @@ define DriverPackage
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define Package/nut-driver-$(2)
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$(call Package/nut/Default)
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TITLE:=$(2) (NUT $(1) driver)
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DEPENDS:=nut +nut-common
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DEPENDS:=nut +nut-server
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$(if $(filter $(1),snmp),DEPENDS+= @NUT_DRIVER_SNMP)
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$(if $(filter $(1),usb),DEPENDS+= @NUT_DRIVER_USB)
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$(if $(filter $(1),serial),DEPENDS+= @NUT_DRIVER_SERIAL)
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@ -6,14 +6,38 @@
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#
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START=50
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RUN_D=/var/run
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PID_F=$RUN_D/upsd.pid
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UPS_C=/var/etc/nut/ups.conf
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USERS_C=/var/etc/nut/upsd.users
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UPSD_C=/var/etc/nut/upsd.conf
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UPS_C=/var/etc/nut/ups.conf
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USE_PROCD=1
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get_write_driver_config() {
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local cfg="$1"
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local var="$2"
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local def="$3"
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local flag="$4"
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local val
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[ -z "$flag" ] && {
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config_get val "$cfg" "$var" "$def"
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[ -n "$val" ] && [ "$val" != "0" ] && echo "$var = $val" >>"$UPS_C"
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}
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[ -n "$flag" ] && {
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config_get_bool val "$cfg" "$var" "$def"
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[ "$val" = 1 ] && echo "$var" >>"$UPS_C"
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}
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}
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upsd_statepath() {
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local cfg="$1"
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local statepath
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config_get statepath "$cfg" statepath "/var/run/nut"
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STATEPATH="$statepath"
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}
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listen_address() {
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local cfg="$1"
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@ -22,18 +46,17 @@ listen_address() {
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echo "LISTEN $address $port" >>$UPSD_C
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}
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upsd_statepath() {
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local cfg="$1"
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config_get statepath "$cfg" statepath
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}
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upsd_config() {
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local cfg="$1"
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local maxage maxconn certfile
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local maxage maxconn certfile runas statepath
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# Note runas support requires you make sure USB device file is readable by
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# the runas user
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config_get runas "$cfg" runas
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config_get runas "$cfg" runas "nut"
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RUNAS="$runas"
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config_get statepath "$cfg" statepath "/var/run/nut"
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STATEPATH="$statepath"
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config_get maxage "$cfg" maxage
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[ -n "$maxage" ] && echo "MAXAGE $maxage" >>$UPSD_C
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@ -78,81 +101,158 @@ nut_user_add() {
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fi
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}
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start_service() {
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local runas statepath
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mkdir -p /var/etc/nut
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chmod -R 750 /var/etc/nut
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rm -f $UPSD_C
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rm -f $USERS_C
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rm -f $UPSD_C
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build_server_config() {
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mkdir -m 0755 -p "$(dirname "$UPSD_C")"
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rm -f "$USERS_C"
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rm -f "$UPSD_C"
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rm -f /var/etc/nut/nut.conf
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echo "# Config file automatically generated from UCI config" > $UPS_C
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echo "# Config file automatically generated from UCI config" > $USERS_C
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echo "# Config file automatically generated from UCI config" > $UPSD_C
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local in_driver have_drivers
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config_cb() {
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if [ "$1" != "driver" ]; then
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in_driver=
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else
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echo "[$2]" >> $UPS_C
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in_driver=true
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have_drivers=true
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fi
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}
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option_cb() {
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if [ "$in_driver" = "true" ]; then
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echo " $1 = $2" >> $UPS_C
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fi
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}
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config_load nut_server
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config_foreach nut_user_add user
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config_foreach upsd_config upsd
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config_foreach listen_address listen_address
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config_foreach upsd_config upsd
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echo "MODE=netserver" >>/var/etc/nut/nut.conf
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chmod 0640 $USERS_C
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chmod 0640 $UPS_C
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chmod 0640 $UPSD_C
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chmod 0640 /var/etc/nut/nut.conf
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[ -d "${statepath:-/var/run/nut}" ] || {
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mkdir -m 0750 -p "${statepath:-/var/run/nut}"
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chown $runas:$(id -gn $runas) "${statepath:-/var/run/nut}"
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[ -d "${STATEPATH}" ] || {
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mkdir -m 0750 -p "${STATEPATH}"
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}
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if [ -n "$runas" ]; then
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chown -R $runas:$(id -gn $runas) /var/etc/nut
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fi
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if [ "$have_drivers" = "true" ]; then
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$DEBUG /usr/sbin/upsd ${runas:+-u $runas} $OPTIONS
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$DEBUG /usr/sbin/upsdrvctl ${runas:+-u $runas} start
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if [ -n "$RUNAS" ]; then
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chown $RUNAS:$(id -gn $RUNAS) "${STATEPATH}"
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chgrp $(id -gn $RUNAS) "$USERS_C"
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chgrp $(id -gn $RUNAS) "$UPSD_C"
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fi
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}
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nut_driver_stop() {
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build_driver_config() {
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local cfg="$1"
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local runas
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echo "[$cfg]" >>"$UPS_C"
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config_get runas "$cfg" runas "nut"
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RUNAS="$runas"
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get_write_driver_config "$cfg" driver "usbhid-ups"
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get_write_driver_config "$cfg" port "auto"
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get_write_driver_config "$cfg" mfr
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get_write_driver_config "$cfg" model
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get_write_driver_config "$cfg" serial
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get_write_driver_config "$cfg" sdtime
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get_write_driver_config "$cfg" offdelay 20
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get_write_driver_config "$cfg" ondelay 30
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get_write_driver_config "$cfg" pollfreq 30
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get_write_driver_config "$cfg" vendor
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get_write_driver_config "$cfg" product
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get_write_driver_config "$cfg" bus
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get_write_driver_config "$cfg" interruptonly 0 1
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get_write_driver_config "$cfg" interruptsize 0
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get_write_driver_config "$cfg" maxreport
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get_write_driver_config "$cfg" vendorid
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get_write_driver_config "$cfg" productid
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get_write_driver_config "$cfg" community
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get_write_driver_config "$cfg" snmp_version
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get_write_driver_config "$cfg" snmp_retries 0
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get_write_driver_config "$cfg" snmp_timeout 0
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get_write_driver_config "$cfg" notransferoids 0 1
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get_write_driver_config "$cfg" other
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echo "" >>$UPS_C
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}
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build_config() {
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mkdir -m 0755 -p "$(dirname "$UPS_C")"
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rm -f "$UPS_C"
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echo "# Config file automatically generated from UCI config" > "$UPS_C"
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chmod 0640 "$UPS_C"
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config_load nut_server
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config_foreach build_driver_config driver
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[ -n "$RUNAS" ] && chgrp $(id -gn $RUNAS) "$UPS_C"
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build_server_config
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}
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start_driver_instance() {
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local cfg="$1"
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local requested="$2"
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local RUNAS=nut
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local driver
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config_get driver "$cfg" driver
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# If wanting a specific instance, only start it
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[ "$requested" != "$cfg" ] && [ x"$requested" != x"" ] && return 0
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[ -r ${statepath:-/var/run/nut}/$driver-$cfg ] && /usr/sbin/upsdrvctl stop $cfg
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mkdir -m 0755 -p "$(dirname "$UPS_C")"
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[ ! -s "$UPS_C" ] && build_config
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# Avoid hotplug inadvertenly restarting driver during
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# forced shutdown
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[ -f /var/run/killpower ] && return 0
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[ -d /var/run/nut ] && [ -f /var/run/nut/disable-hotplug ] && return 0
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if [ -n "$RUNAS" ]; then
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chown $RUNAS:$(id -gn $RUNAS) "${STATEPATH}"
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chown $RUNAS:$(id -gn $RUNAS) "$(dirname "$UPS_C")"
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fi
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config_get driver "$cfg" driver "usbhid-ups"
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procd_open_instance "$cfg"
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procd_set_param respawn
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procd_set_param stderr 0
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procd_set_param stdout 1
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procd_set_param command /lib/nut/${driver} -D -a "$cfg" ${RUNAS:+-u $RUNAS}
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procd_close_instance
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}
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stop_service() {
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[ -r $PID_F ] && /usr/sbin/upsd -c stop
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config_load ups
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start_server_instance() {
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local RUNAS STATEPATH
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build_config
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procd_open_instance "upsd"
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procd_set_param respawn
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procd_set_param stderr 0
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procd_set_param stdout 1
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procd_set_param command /usr/sbin/upsd -D ${RUNAS:+-u $RUNAS}
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procd_close_instance
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}
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start_service() {
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local STATEPATH=/var/run/nut
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# Avoid hotplug inadvertenly restarting driver during
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# forced shutdown
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[ -f /var/run/killpower ] && return 0
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[ -d /var/run/nut ] && [ -f /var/run/nut/disable-hotplug ] && return 0
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config_load nut_server
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config_foreach upsd_statepath upsd
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config_foreach nut_driver_stop driver
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[ -d "${STATEPATH}" ] || {
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mkdir -m 0750 -p "${STATEPATH}"
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}
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build_config
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config_foreach start_driver_instance driver "$@"
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[ "$1" != "upsd" ] && [ x"$1" != x"" ] && return 0
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start_server_instance "upsd"
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}
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reload_service() {
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upsd -c reload
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stop
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sleep 2
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start
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}
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service_triggers() {
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procd_add_reload_trigger "nut_server"
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}
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@ -19,5 +19,6 @@
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# option maxage 15
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# option statepath /var/run/nut
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# option maxconn 1024
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# option runas nut
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# NB: certificates only apply to SSL-enabled version
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# option certfile /usr/local/etc/upsd.pem
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