hostname with serial number (#180)

* hostname with serial number

* add systemd.hostname kernel param

* /etc/hostname is now a symlink

* probably shouldn't have moved that

* fix path

* force symlink

* update kernel load script to support passing in device name

* remove kernel param

* change hostname from tici to comma

* bump kernel

Dockerfile.agnos

@@ -16,7 +16,7 @@ RUN set -xe
 
 ENV USERNAME=comma
 ENV PASSWD=comma
-ENV HOST=tici
+ENV HOST=comma
 
 # Base system setup
 RUN echo "resolvconf resolvconf/linkify-resolvconf boolean false" | debconf-set-selections

build_system.sh

@@ -67,8 +67,8 @@ sudo tar -xf $BUILD_DIR/filesystem.tar > /dev/null
 
 # Add hostname and hosts. This cannot be done in the docker container...
 echo "Setting network stuff"
-HOST=tici
-sudo bash -c "echo $HOST > etc/hostname"
+HOST=comma
+sudo bash -c "ln -sf /proc/sys/kernel/hostname etc/hostname"
 sudo bash -c "echo \"127.0.0.1    localhost.localdomain localhost\" > etc/hosts"
 sudo bash -c "echo \"127.0.0.1    $HOST\" >> etc/hosts"
 

load_kernel.sh

@@ -1,7 +1,7 @@
 #!/bin/bash -e
 cd "$(dirname "$0")"
 
-DEVICE=tici-ethernet
+DEVICE=${DEVICE:-comma-ethernet}
 
 scp output/boot.img $DEVICE:/tmp/
 ssh $DEVICE "sudo dd if=/tmp/boot.img of=/dev/disk/by-partlabel/boot_a && sudo dd if=/tmp/boot.img of=/dev/disk/by-partlabel/boot_b && sudo reboot"

load_kernel_headers.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
-scp output/linux-headers*.deb tici:/tmp/
-ssh tici "sudo apt install -yq /tmp/linux-headers*.deb"
+scp output/linux-headers*.deb comma:/tmp/
+ssh comma "sudo apt install -yq /tmp/linux-headers*.deb"
 

userspace/base_setup.sh

@@ -2,7 +2,7 @@
 
 USERNAME=comma
 PASSWD=comma
-HOST=tici
+HOST=comma
 
 # Create identification file
 touch /TICI

userspace/files/serial-hostname.service

@@ -1,6 +1,7 @@
 [Unit]
 Description=Sets the hostname to the device's serial number
-After=NetworkManager.service
+After=basic.target
+Before=network.target
 
 [Service]
 User=root

userspace/services.sh

@@ -8,7 +8,7 @@ systemctl enable cdsprpcd
 
 # Enable our services
 systemctl enable fs_setup.service
-#systemctl enable serial-hostname.service
+systemctl enable serial-hostname.service
 systemctl enable comma.service
 systemctl enable gpio.service
 systemctl enable lte.service
@@ -28,7 +28,6 @@ systemctl enable set_time.service
 systemctl enable phantom_touch_logger.service
 
 # Disable some of our services
-systemctl disable serial-hostname.service
 systemctl disable agnos-tests.service
 
 # Disable third party services

userspace/usr/comma/set-hostname.sh

@@ -3,4 +3,4 @@ set -e
 
 SERIAL="$(cat /proc/cmdline | sed -e 's/^.*androidboot.serialno=//' -e 's/ .*$//')"
 echo "serial: '$SERIAL'"
-hostnamectl set-hostname --transient "tici-$SERIAL"
+sysctl kernel.hostname="comma-$SERIAL"