heads/initrd/bin/generic-init
Kyle Rankin 3eb62eed1a
Use global /tmp/config that combines multiple config files
As part of the config gui we want to be able to have the system define
new config options without them being lost if the user makes their own
changes in CBFS. To allow that this change creates a function initiated
in init that combines all /etc/config* files into /tmp/config. All
existing scripts have been changed to source /tmp/config instead of
/etc/config. The config-gui.sh script now uses /etc/config.user to hold
user configuration options but the combine_configs function will allow
that to expand as others want to split configuration out further.

As it stands here are the current config files:

/etc/config -- Compiled-in configuration options
/etc/config.user -- User preferences that override /etc/config
/tmp/config -- Running config referenced by the BIOS, combination
               of existing configs
2018-12-06 15:24:28 -08:00

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#!/bin/sh
# Boot from a local disk installation
. /etc/functions
. /tmp/config
mount_boot()
{
# Mount local disk if it is not already mounted
if ! grep -q /boot /proc/mounts ; then
mount -o ro /boot \
|| recovery "Unable to mount /boot"
fi
}
# Confirm we have a good TOTP unseal and ask the user for next choice
while true; do
echo "y) Default boot"
echo "n) TOTP does not match"
echo "r) Recovery boot"
echo "u) USB boot"
echo "m) Boot menu"
if ! confirm_totp "Boot mode"; then
recovery 'Failed to unseal TOTP'
fi
if [ "$totp_confirm" = "r" ]; then
recovery "User requested recovery shell"
fi
if [ "$totp_confirm" = "n" ]; then
echo ""
echo "To correct clock drift: 'date -s HH:MM:SS'"
echo "and save it to the RTC: 'hwclock -w'"
echo "then reboot and try again"
echo ""
recovery "TOTP mismatch"
fi
if [ "$totp_confirm" = "u" ]; then
exec /bin/usb-init
continue
fi
if [ "$totp_confirm" = "m" ]; then
# Try to select a kernel from the menu
mount_boot
kexec-select-boot -m -b /boot -c "grub.cfg"
continue
fi
if [ "$totp_confirm" = "y" -o -n "$totp_confirm" ]; then
# Try to boot the default
mount_boot
kexec-select-boot -b /boot -c "grub.cfg" \
|| recovery "Failed default boot"
fi
done
recovery "Something failed during boot"