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Userland: Add support for jails

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This happens in two ways:
1. LibCore now has two new methods for creating Jails and attaching
   processes to a Jail.
2. We introduce 3 new utilities - lsjails, jail-create and jails-attach,
   which list jails, create jails and attach processes to a Jail,
   respectively.
This commit is contained in:
Liav A 2022-11-02 22:28:58 +02:00 • committed by Andrew Kaster
parent 1d0066a5cc
commit 8d8b0d0a34
9 changed files with 174 additions and 0 deletions
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28
Userland/Utilities/jail-attach.cpp Normal file
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/*
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/ArgsParser.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <unistd.h>
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
unsigned jail_index = 0;
Vector<StringView> command;
Core::ArgsParser args_parser;
bool preserve_env = false;
args_parser.set_stop_on_first_non_option(true);
args_parser.add_option(preserve_env, "Preserve user environment when running command", "preserve-env", 'E');
args_parser.add_positional_argument(jail_index, "Jail Index", "jail index");
args_parser.add_positional_argument(command, "Command to execute", "command");
args_parser.parse(arguments);
TRY(Core::System::pledge("stdio rpath exec id jail tty"));
TRY(Core::System::join_jail(jail_index));
TRY(Core::System::exec_command(command, preserve_env));
return 0;
}