mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 04:32:44 +00:00
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/StringView.h>
|
|
#include <Kernel/FileSystem/Custody.h>
|
|
#include <Kernel/FileSystem/VirtualFileSystem.h>
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
KResultOr<FlatPtr> Process::sys$chroot(Userspace<const char*> user_path, size_t path_length, int mount_flags)
|
|
{
|
|
if (!is_superuser())
|
|
return EPERM;
|
|
REQUIRE_PROMISE(chroot);
|
|
auto path = get_syscall_path_argument(user_path, path_length);
|
|
if (path.is_error())
|
|
return path.error();
|
|
auto directory_or_error = VirtualFileSystem::the().open_directory(path.value()->view(), current_directory());
|
|
if (directory_or_error.is_error())
|
|
return directory_or_error.error();
|
|
auto directory = directory_or_error.value();
|
|
m_root_directory_relative_to_global_root = directory;
|
|
int chroot_mount_flags = mount_flags == -1 ? directory->mount_flags() : mount_flags;
|
|
|
|
auto custody_or_error = Custody::try_create(nullptr, "", directory->inode(), chroot_mount_flags);
|
|
if (custody_or_error.is_error())
|
|
return custody_or_error.error();
|
|
|
|
set_root_directory(custody_or_error.release_value());
|
|
return 0;
|
|
}
|
|
|
|
}
|