ladybird/Kernel/Syscalls/mknod.cpp
2021-07-11 00:25:24 +02:00

27 lines
842 B
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringView.h>
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/Process.h>
namespace Kernel {
KResultOr<FlatPtr> Process::sys$mknod(Userspace<const Syscall::SC_mknod_params*> user_params)
{
REQUIRE_PROMISE(dpath);
Syscall::SC_mknod_params params;
if (!copy_from_user(&params, user_params))
return EFAULT;
if (!is_superuser() && !is_regular_file(params.mode) && !is_fifo(params.mode) && !is_socket(params.mode))
return EPERM;
auto path = get_syscall_path_argument(params.path);
if (path.is_error())
return path.error();
return VirtualFileSystem::the().mknod(path.value()->view(), params.mode & ~umask(), params.dev, current_directory());
}
}