#!/bin/execlineb -P
#
# anopa - Copyright (C) 2015 Olivier Brunel
#
# aa-stage1
# Copyright (C) 2015 Olivier Brunel <jjk@jjacky.com>
#
# This file is part of anopa.
#
# anopa is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# anopa is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# anopa. If not, see http://www.gnu.org/licenses/
#

/bin/emptyenv /bin/s6-envdir /etc/anopa/env /bin/exec

# Set up a pipe to log messages
piperw 3 4
background
{
    fdclose 4 fdmove 0 3
    redirfd -a 1 /run/initramfs/boot.log
    fdmove -c 2 1
    s6-tai64n
}

# aa-* tools will send output to both 1 & 2 via -D
fdclose 3
fdmove 2 4
foreground { aa-echo -DB "Stage 1: Preparing system..." }

# Safety
cd /
umask 022

# Create the repository
foreground { emptyenv -c
aa-enable -Dl /etc/anopa/enabled -k uncaught-logs -f /libexec/aa-stage3 }

# Make sure the FIFO needed for the switch to stage 2 is there
ifelse -X -n { aa-test -Dp /run/services/.scandir/uncaught-logs/fifo }
{
    foreground { aa-echo -DBe "Cannot start s6-svscan: No uncaught-logs fifo found" }
    fdmove -c 2 1
    foreground { aa-echo -t "Trying to open a shell..." }
    emptyenv -c sh -i
}

# Reopen stdin/stdout/stderr to make them point to the right places
redirfd -r 0 /dev/null
redirfd -wnb 1 /run/services/uncaught-logs/fifo # (black magic: doesn't block)
fdmove -c 2 1

# Fork the stage2 script and have it ready to start as soon as the catch-all
# logger is in place
background
{
    s6-setsid
    redirfd -w 1 /run/services/uncaught-logs/fifo # (blocks until the logger reads)
    /libexec/aa-stage2
}

# Start the "real" stage 2 (as far as PID 1 goes)
emptyenv -c s6-svscan -t0 /run/services/.scandir