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initrd: Implement shell with a task

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This commit is contained in:
Samuel Dionne-Riel 2019-12-25 00:37:55 -05:00
parent 62b7b47117
commit 56cdb1abca
1 changed files with 20 additions and 8 deletions
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28
modules/initrd-shell.nix
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@ -1,7 +1,6 @@
{ config, lib, pkgs, ... }: { config, lib, pkgs, ... }:
with lib; with lib;
with import ./initrd-order.nix;
let let
cfg = config.mobile.boot.stage-1.shell; cfg = config.mobile.boot.stage-1.shell;
@ -29,12 +28,25 @@ in
}; };
}; };
config.mobile.boot.stage-1 = { config.mobile.boot.stage-1 = lib.mkIf cfg.enable {
init = lib.mkIf cfg.enable (lib.mkOrder BEFORE_SWITCH_ROOT_INIT '' tasks = [
echo (pkgs.writeText "run-shell-task.rb" ''
echo "Exit this shell (CTRL+D) to resume booting." class Tasks::RunShell < SingletonTask
echo def initialize()
setsid /bin/sh -c /bin/sh < /dev/${cfg.console} >/dev/${cfg.console} 2>/dev/${cfg.console} # Wedge the task between the target "root", and the
''); # actual task we want to prevent running.
add_dependency(:Target, :SwitchRoot)
SwitchRoot.instance.add_dependency(:Task, self)
end
def run()
cmd = %q{setsid /bin/sh -c /bin/sh < /dev/${cfg.console} >/dev/${cfg.console} 2>/dev/${cfg.console}}
$logger.debug(" $ #{cmd}")
puts("\nExit this shell (CTRL+D) to resume booting.\n")
system(cmd)
end
end
'')
];
}; };
} }