feat: Configure timezone with /boot/timezone cfg file (#83)

The system time is now set to UTC.
The user timezone can be set with /boot/timezone containing a single line with the TZ name.

This resolves #78

Author: zehnm

buildroot-external/board/raspberrypi/boot-overlay/README.md

@@ -23,6 +23,18 @@ Attention:
 - If a wpa_supplicant.conf file is present in /boot, the initial setup is skipped during first run.
 - The Raspberry Pi 0 W doesn't support 5GHz networks!
 
+### Timezone configuration
+
+The system time is automatically set with NTP and the default timezone is UTC.
+
+- To set another timezone create a file named `timezone` in the root of this boot partition.
+- Content is a single line containing the Linux TZ name.  
+  See <https://en.wikipedia.org/wiki/List_of_tz_database_time_zones> for a list of valid TZ database names.  
+  Examples:
+  - Europe/Copenhagen
+  - Asia/Hong_Kong
+  - America/Vancouver
+
 ### Bluetooth Serial Console
 
 To enable a Bluetooth serial console, create a marker file `btconsole` in the root of this boot partition.

buildroot-external/board/raspberrypi/boot-overlay/timezone.template

@@ -0,0 +1 @@
+Europe/Zurich

buildroot-external/rootfs-overlay/etc/profile.d/yio.sh buildroot-external/board/raspberrypi/rootfs-overlay/etc/profile.d/yio.sh

@@ -12,3 +12,4 @@ export YIO_OS_VERSION=$BUILD_VERSION
 export YIO_OS_GITHASH=$GIT_HASH
 export YIO_LOG_DIR=/var/log
 export YIO_LOG_DIR_UPDATE=/boot/log
+export YIO_CFG_OVERRIDE_DIR=/boot

buildroot-external/board/remote/boot-overlay/README.md

@@ -22,6 +22,18 @@ Attention:
 - If a wpa_supplicant.conf file is present in /boot, the initial setup is skipped during first run.
 - The Raspberry Pi 0 W doesn't support 5GHz networks!
 
+### Timezone configuration
+
+The system time is automatically set with NTP and the default timezone is UTC.
+
+- To set another timezone create a file named `timezone` in the root of this boot partition.
+- Content is a single line containing the Linux TZ name.  
+  See <https://en.wikipedia.org/wiki/List_of_tz_database_time_zones> for a list of valid TZ database names.  
+  Examples:
+  - Europe/Copenhagen
+  - Asia/Hong_Kong
+  - America/Vancouver
+
 ### Bluetooth Serial Console
 
 To enable a Bluetooth serial console, create a marker file `btconsole` in the root of this boot partition.

buildroot-external/board/remote/boot-overlay/timezone.template

@@ -0,0 +1 @@
+Europe/Zurich

buildroot-external/board/remote/rootfs-overlay/etc/profile.d/yio.sh

@@ -0,0 +1,15 @@
+# home directory is not freely changeable!
+# systemd services don't support env variables in ExecStart!
+export YIO_HOME=/opt/yio
+export YIO_APP_DIR=${YIO_HOME}/app
+export YIO_PLUGIN_DIR=${YIO_HOME}/app-plugins
+export YIO_MEDIA_DIR=${YIO_HOME}/media
+export YIO_SCRIPT_DIR=${YIO_HOME}/scripts
+export YIO_WEB_CONFIGURATOR_DIR=${YIO_HOME}/web-configurator
+# remote-os release, set during build
+export YIO_OS_VERSION=$BUILD_VERSION
+# Git hash of the remote-os repo, set during build
+export YIO_OS_GITHASH=$GIT_HASH
+export YIO_LOG_DIR=/var/log
+export YIO_LOG_DIR_UPDATE=/boot/log
+export YIO_CFG_OVERRIDE_DIR=/boot

buildroot-external/configs/remote_defconfig

@@ -15,7 +15,7 @@ BR2_TARGET_GENERIC_ISSUE="Welcome to YIO Remote"
 BR2_INIT_SYSTEMD=y
 BR2_TARGET_GENERIC_ROOT_PASSWD="yioremote"
 BR2_GENERATE_LOCALE="en_US.UTF-8"
-BR2_TARGET_LOCALTIME="Europe/Copenhagen"
+BR2_TARGET_LOCALTIME="UTC"
 BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_YIOS_PATH)/rootfs-overlay $(BR2_EXTERNAL_YIOS_PATH)/board/remote/rootfs-overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_YIOS_PATH)/scripts/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="$(BR2_EXTERNAL_YIOS_PATH)/scripts/post-image.sh"

buildroot-external/configs/rpi0w_defconfig

@@ -17,6 +17,8 @@ BR2_TARGET_GENERIC_HOSTNAME="yio-dev"
 BR2_TARGET_GENERIC_ISSUE="Welcome to YIO Developer Edition"
 BR2_INIT_SYSTEMD=y
 BR2_TARGET_GENERIC_ROOT_PASSWD="yioremote"
+BR2_GENERATE_LOCALE="en_US.UTF-8"
+BR2_TARGET_LOCALTIME="UTC"
 BR2_TARGET_GENERIC_GETTY_PORT="tty1"
 BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_YIOS_PATH)/rootfs-overlay $(BR2_EXTERNAL_YIOS_PATH)/board/raspberrypi/rootfs-overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_YIOS_PATH)/scripts/post-build.sh"

buildroot-external/configs/rpi3_defconfig

@@ -18,6 +18,8 @@ BR2_TARGET_GENERIC_HOSTNAME="yio-dev"
 BR2_TARGET_GENERIC_ISSUE="Welcome to YIO Developer Edition"
 BR2_INIT_SYSTEMD=y
 BR2_TARGET_GENERIC_ROOT_PASSWD="yioremote"
+BR2_GENERATE_LOCALE="en_US.UTF-8"
+BR2_TARGET_LOCALTIME="UTC"
 BR2_TARGET_GENERIC_GETTY_PORT="tty1"
 BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_YIOS_PATH)/rootfs-overlay $(BR2_EXTERNAL_YIOS_PATH)/board/raspberrypi/rootfs-overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_YIOS_PATH)/scripts/post-build.sh"

buildroot-external/rootfs-overlay/opt/yio/app-launch.sh

@@ -4,6 +4,12 @@
 . /etc/profile.d/yio.sh
 . /etc/profile.d/qt.sh
 
+if [[ -f ${YIO_CFG_OVERRIDE_DIR}/timezone ]]; then
+  export TZ="$(cat ${YIO_CFG_OVERRIDE_DIR}/timezone)"
+else
+  export TZ="$(cat /etc/timezone)"
+fi
+
 ${YIO_SCRIPT_DIR}/wifi-copy-config.sh
 
 ${YIO_SCRIPT_DIR}/firstrun.sh

buildroot-external/rootfs-overlay/opt/yio/scripts/wifi-copy-config.sh

@@ -1,24 +1,24 @@
 #!/bin/bash
 
-if [ -e /boot/wpa_supplicant.conf ]
+if [ -e ${YIO_CFG_OVERRIDE_DIR}/wpa_supplicant.conf ]
 then
-    if cmp -s /boot/wpa_supplicant.conf /var/etc/wpa_supplicant/wpa_supplicant-wlan0.conf
+    if cmp -s ${YIO_CFG_OVERRIDE_DIR}/wpa_supplicant.conf /var/etc/wpa_supplicant/wpa_supplicant-wlan0.conf
     then
-        echo "wpa_supplicant.conf in /boot already copied"
+        echo "wpa_supplicant.conf in ${YIO_CFG_OVERRIDE_DIR} already copied"
     else
-        echo "Using provided wpa_supplicant.conf in /boot"
+        echo "Using provided wpa_supplicant.conf in ${YIO_CFG_OVERRIDE_DIR}"
 
         # stop wifi
         systemctl stop wpa_supplicant@wlan0.service
         # copy config file
-        cp /boot/wpa_supplicant.conf /var/etc/wpa_supplicant/wpa_supplicant-wlan0.conf
+        cp ${YIO_CFG_OVERRIDE_DIR}/wpa_supplicant.conf /var/etc/wpa_supplicant/wpa_supplicant-wlan0.conf
         # restart wifi
         systemctl start wpa_supplicant@wlan0.service
         sleep 3
 
         touch /var/yio/wificopy
     fi
 else
-    echo "No wpa_supplicant.conf in /boot"
+    echo "No wpa_supplicant.conf in ${YIO_CFG_OVERRIDE_DIR}"
     rm -f  /var/yio/wificopy
 fi