ladybird/Kernel/Syscalls/mknod.cpp

28 lines
874 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/Tasks/Process.h>
namespace Kernel {
ErrorOr<FlatPtr> Process::sys$mknod(Userspace<Syscall::SC_mknod_params const*> user_params)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::dpath));
auto params = TRY(copy_typed_from_user(user_params));
auto credentials = this->credentials();
if (!credentials->is_superuser() && !is_regular_file(params.mode) && !is_fifo(params.mode) && !is_socket(params.mode))
return EPERM;
auto path = TRY(get_syscall_path_argument(params.path));
TRY(VirtualFileSystem::the().mknod(credentials, path->view(), params.mode & ~umask(), params.dev, current_directory()));
return 0;
}
}