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|
#!/bin/bash
# This script performs post treatments after flash
# global variable set to 1 if output is systemd journal
fi_journal_out=0
export PATH="$PATH:/usr/sbin/"
# handle argument, if post-install is called from systemd service
# arg1 is "systemd-service"
if [ "$1" == "systemd-service" ]; then fi_journal_out=1; fi;
#echo function to output to journal system or in colored terminal
#arg $1 message
#arg $2 log level
fi_echo () {
lg_lvl=${2:-"log"}
msg_prefix=""
msg_suffix=""
case "$lg_lvl" in
log) if [ $fi_journal_out -eq 1 ]; then msg_prefix="<5>"; else msg_prefix="\033[1m"; msg_suffix="\033[0m"; fi;;
err) if [ $fi_journal_out -eq 1 ]; then msg_prefix="<1>"; else msg_prefix="\033[31;40m\033[1m"; msg_suffix="\033[0m"; fi;;
esac
printf "${msg_prefix}${1}${msg_suffix}\n"
}
# set_retry_count to failure file
# arg $1 new retry count
set_retry_count () {
fw_setenv first_install_retry $1
}
# get_retry_count from failure from bootloader
get_retry_count () {
retry_count=$(fw_printenv first_install_retry | tr -d "first_install_retry=")
[ -z $retry_count ] && { set_retry_count 0; retry_count=0;}
return $retry_count
}
# exit first_install by rebooting and handling the failure by setting
# the firmware target according to failure or success
# on failure increment fail count and reboot
# on success reboot in multi-user target
# arg $1 exit code
exit_first_install () {
if [ $1 -eq 0 ]; then
# reset failure count
set_retry_count 0
# update firmware target
# next reboot will be on multi-user target
fw_setenv bootargs_target multi-user
fi
# dump journal to log file
journalctl -u post-install -o short-iso >> /post-install.log
systemctl daemon-reload
}
# continue normal flow or exit on error code
# arg $1 : return code to check
# arg $2 : string resuming the action
fi_assert () {
if [ $1 -ne 0 ]; then
fi_echo "${2} : Failed ret($1)" err;
exit_first_install $1;
else
fi_echo "${2} : Success";
fi
}
factory_partition () {
#unmount factory partition
systemctl stop factory.mount
mkdir -p /factory
mount /dev/disk/by-partlabel/factory /factory
# test can fail if done during manufacturing
if [ $? -ne 0 ];
then
mkfs.ext4 /dev/disk/by-partlabel/factory
mount /dev/disk/by-partlabel/factory /factory
echo "00:11:22:33:55:66" > /factory/bluetooth_address
echo "VSPPYWWDXXXXXNNN" > /factory/serial_number
fi
}
mount_home () {
# mount home partition on /home
mount /dev/disk/by-partlabel/home /home
fi_assert $? "Mount /home partition"
}
# generate sshd keys
sshd_init () {
rm -rf /etc/ssh/*key*
systemctl start sshdgenkeys
}
# Substitute the SSID and passphrase in the file /etc/hostapd/hostapd.conf
# The SSID is built from the hostname and a serial number to have a
# unique SSID in case of multiple Edison boards having their WLAN AP active.
setup_ap_ssid_and_passphrase () {
# factory_serial is 16 bytes long
if [ -f /sys/class/net/wlan0/address ];
then
ifconfig wlan0 up
wlan0_addr=$(cat /sys/class/net/wlan0/address | tr '[:lower:]' '[:upper:]')
ssid="EDISON-${wlan0_addr:12:2}-${wlan0_addr:15:2}"
# Substitute the SSID
sed -i -e 's/^ssid=.*/ssid='${ssid}'/g' /etc/hostapd/hostapd.conf
fi
if [ -f /factory/serial_number ] ;
then
factory_serial=$(head -n1 /factory/serial_number | tr '[:lower:]' '[:upper:]')
passphrase="${factory_serial}"
# Substitute the passphrase
sed -i -e 's/^wpa_passphrase=.*/wpa_passphrase='${passphrase}'/g' /etc/hostapd/hostapd.conf
fi
sync
}
# script main part
# print to journal the current retry count
get_retry_count
retry_count=$?
set_retry_count $((${retry_count} + 1))
fi_echo "Starting Post Install (try: ${retry_count})"
systemctl start blink-led
ota_done=$(fw_printenv ota_done | tr -d "ota_done=")
if [ "$ota_done" != "1" ];
then
# backup initial /home/root directory
mkdir /tmp/oldhome
cp -R /home/* /tmp/oldhome/
fi_assert $? "Backup home/root contents of rootfs"
# format partition home to ext4
mkfs.ext4 -m0 /dev/disk/by-partlabel/home
fi_assert $? "Formatting home partition"
# mount home partition
mount_home
# copy back contents to /home and cleanup
cp -R /tmp/oldhome/* /home/
rm -rf /tmp/oldhome
fi_assert $? "Restore home/root contents on new /home partition"
# create a fat32 primary partition on all available space
echo -ne "n\np\n1\n\n\nt\nb\np\nw\n" | fdisk /dev/disk/by-partlabel/update
# silent error code for now because fdisk failed to reread MBR correctly
# MBR is correct but fdisk understand it as the main system MBR, which is
# not the case.
fi_assert 0 "Formatting update partition Step 1"
# create a loop device on update disk
losetup -o 8192 /dev/loop0 /dev/disk/by-partlabel/update
fi_assert $? "Formatting update partition Step 2"
# format update partition
mkfs.vfat /dev/loop0 -n "Edison" -F 32
fi_assert $? "Formatting update partition Step 3"
# remove loop device on update disk
losetup -d /dev/loop0
fi_assert $? "Formatting update partition Step 4 final"
else
# just mount home partition after OTA update
mount_home
fi
# handle factory partition
factory_partition
# ssh
sshd_init
fi_assert $? "Generating sshd keys"
# update entry in /etc/fstab to enable auto mount
sed -i 's/#\/dev\/disk\/by-partlabel/\/dev\/disk\/by-partlabel/g' /etc/fstab
fi_assert $? "Update file system table /etc/fstab"
# Setup Access Point SSID and passphrase
setup_ap_ssid_and_passphrase
fi_assert $? "Generating Wifi Access Point SSID and passphrase"
fi_echo "Post install success"
systemctl stop blink-led
# end main part
exit_first_install 0
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