ladybird/Kernel/Syscalls/disown.cpp
Brian Gianforcaro 9201a06027 Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED
Before we start disabling acquisition of the big process lock for
specific syscalls, make sure to document and assert that all the
lock is held during all syscalls.
2021-07-20 03:21:14 +02:00

26 lines
565 B
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Process.h>
namespace Kernel {
KResultOr<FlatPtr> Process::sys$disown(ProcessID pid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
REQUIRE_PROMISE(proc);
auto process = Process::from_pid(pid);
if (!process)
return ESRCH;
if (process->ppid() != this->pid())
return ECHILD;
ProtectedDataMutationScope scope(*process);
process->m_ppid = 0;
process->disowned_by_waiter(*this);
return 0;
}
}