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make s6-init-files into a module

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This commit is contained in:
Daniel Barlow 2022-09-27 10:19:44 +01:00
parent 85f7f7293d
commit 797aa30c47
10 changed files with 161 additions and 172 deletions
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158
modules/s6/default.nix Normal file
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@ -0,0 +1,158 @@
{ config, pkgs, ... }:
let
inherit (pkgs)
busybox
execline
s6
s6-init-bin
s6-linux-init
stdenvNoCC;
inherit (pkgs.pseudofile) dir symlink;
s6-rc-db = pkgs.s6-rc-database.override {
services = builtins.attrValues config.services;
};
s6-init-scripts = stdenvNoCC.mkDerivation {
name = "s6-scripts";
src = ./scripts;
phases = ["unpackPhase" "installPhase" ];
buildInputs = [busybox];
installPhase = ''
mkdir $out
cp -r $src $out/scripts
chmod -R +w $out
patchShebangs $out/scripts
'';
};
service = dir {
s6-linux-init-runleveld = dir {
notification-fd = { file = "3"; };
run = {
file = ''
#!${execline}/bin/execlineb -P
${execline}/bin/fdmove -c 2 1
${execline}/bin/fdmove 1 3
${s6}/bin/s6-ipcserver -1 -a 0700 -c 1 -- s
${s6}/bin/s6-sudod -dt30000 -- "/etc/s6-linux-init/current"/scripts/runlevel
'';
mode = "0755";
};
};
s6-linux-init-shutdownd = dir {
fifo = {
type = "i";
subtype = "f";
mode = "0600";
};
run = {
file = ''
#!${execline}/bin/execlineb -P
${s6-linux-init}/bin/s6-linux-init-shutdownd -c "/etc/s6-linux-init/current" -g 3000
'';
mode = "0755";
};
};
s6-svscan-log = dir {
fifo = {
type = "i";
subtype = "f";
mode = "0600";
};
notification-fd = { file = "3"; };
run = {
file = ''
#!${execline}/bin/execlineb -P
${execline}/bin/redirfd -w 1 /dev/null
${execline}/bin/redirfd -rnb 0 fifo
${s6}/bin/s6-log -bpd3 -- t /run/uncaught-logs
'';
mode = "0755";
};
};
getty = dir {
run = {
file = ''
#!${execline}/bin/execlineb -P
${busybox}/bin/getty -l ${busybox}/bin/login 38400 /dev/console
'';
mode = "0755";
};
};
".s6-svscan" =
let
quit = message: ''
#!${execline}/bin/execlineb -P
${execline}/bin/redirfd -w 2 /dev/console
${execline}/bin/fdmove -c 1 2
${execline}/bin/foreground { ${s6-linux-init}/bin/s6-linux-init-echo -- ${message} }
${s6-linux-init}/bin/s6-linux-init-hpr -fr
'';
shutdown = action: ''
#!${execline}/bin/execlineb -P
${s6-linux-init}/bin/s6-linux-init-hpr -a #{action} -- now
'';
empty = "#!${execline}/bin/execlineb -P\n";
in dir {
crash = {
file = quit "s6-svscan crashed. Rebooting.";
mode = "0755";
};
finish = {
file = quit "s6-svscan exited. Rebooting.";
mode = "0755";
};
SIGINT = {
file = shutdown "-r";
mode = "0755";
};
SIGPWR = {
file = shutdown "-p";
mode = "0755";
};
SIGQUIT = {
file = empty;
mode = "0755";
};
SIGTERM = {
file = empty;
mode = "0755";
};
SIGUSR1 = {
file = shutdown "-p";
mode = "0755";
};
SIGUSR2 = {
file = shutdown "-h";
mode = "0755";
};
SIGWINCH = {
file = empty;
mode = "0755";
};
};
};
in {
config = {
environment = dir {
etc = dir {
s6-rc = dir {
compiled = symlink "${s6-rc-db}/compiled";
};
s6-linux-init = dir {
current = dir {
scripts = symlink "${s6-init-scripts}/scripts";
env = dir {};
run-image = dir {
uncaught-logs = (dir {}) // {mode = "2750";};
inherit service;
};
};
};
};
bin = dir {
init = symlink "${s6-init-bin}/bin/init";
};
};
};
}