added a buildroot patch for NUT package to use "--with-user" and "--w…

…ith-group" configure option to use nobody:nogroup rather than nobody:nobody which results in varies problems leading to nun working NUT server support. This closes #93.

Makefile

@@ -18,7 +18,7 @@ buildroot-$(BUILDROOT_VERSION).tar.bz2:
 BUILDROOT_PATCHES=$(wildcard buildroot-patches/*.patch)
 
 buildroot-$(BUILDROOT_VERSION): | buildroot-$(BUILDROOT_VERSION).tar.bz2
-	if [ ! -d $@ ]; then tar xf buildroot-$(BUILDROOT_VERSION).tar.bz2; for p in `ls buildroot-patches`; do patch -d buildroot-$(BUILDROOT_VERSION) -p1 < buildroot-patches/$${p}; done; fi
+	if [ ! -d $@ ]; then tar xf buildroot-$(BUILDROOT_VERSION).tar.bz2; for p in $(BUILDROOT_PATCHES); do patch -d buildroot-$(BUILDROOT_VERSION) -p1 < $${p}; done; fi
 
 build-$(BOARD): | buildroot-$(BUILDROOT_VERSION) download
 	mkdir -p build-$(BOARD)

buildroot-external/overlay/base/etc/config_templates/nut/ups.conf

@@ -102,3 +102,10 @@
 #
 # To find out if your driver supports any extra settings, start it with
 # the -h option and/or read the driver's documentation.
+#
+# If you connect your UPS via USB you can try the following section:
+#
+# [myups]
+# driver = usbhid-ups
+# port = auto
+# desc = "USB UPS"

buildroot-external/overlay/base/etc/init.d/S51nut

@@ -25,6 +25,15 @@ NUT_CONFIG=/etc/config/nut/nut.conf
 case $1 in
   start)
     echo -n "Starting NUT services: "
+
+    # make sure some necessary state dirs exist
+    mkdir -p /var/state/ups
+    chown root:nogroup /var/state/ups
+    chmod 770 /var/state/ups
+    mkdir -p /var/run/upsd
+    chown root:nogroup /var/run/upsd
+    chmod 770 /var/run/upsd
+
     # start the server (upsdrvctl/upsd)
     case "${MODE}" in
       standalone|netserver)

buildroot-patches/0002-nut-mk.patch

@@ -0,0 +1,13 @@
+--- buildroot/package/nut/nut.mk.orig	2017-04-15 14:35:11.631620680 +0200
++++ buildroot/package/nut/nut.mk	2017-04-15 21:21:02.292137847 +0200
+@@ -18,7 +18,9 @@
+ # since the default location (/var/state/ups) maybe readonly.
+ NUT_CONF_OPTS = \
+ 	--with-altpidpath=/var/run/upsd \
+-	--without-hal
++	--without-hal \
++	--with-user=nobody \
++	--with-group=nogroup
+
+ # For uClibc-based toolchains, nut forgets to link with -lm
+ ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)