Kernel/Syscalls/disown.cpp


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/*
 * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <Kernel/Process.h>

namespace Kernel {

ErrorOr<FlatPtr> Process::sys$disown(ProcessID pid)
{
    VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
    TRY(require_promise(Pledge::proc));
    auto process = Process::from_pid(pid);
    if (!process)
        return ESRCH;
    if (process->ppid() != this->pid())
        return ECHILD;
    process->with_mutable_protected_data([](auto& protected_data) {
        protected_data.ppid = 0;
    });
    process->disowned_by_waiter(*this);
    return 0;
}
}