ladybird/Kernel/Syscalls/link.cpp
2021-09-05 14:38:28 +02:00

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/VirtualFileSystem.h>
#include <Kernel/Process.h>
namespace Kernel {
KResultOr<FlatPtr> Process::sys$link(Userspace<const Syscall::SC_link_params*> user_params)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(cpath);
Syscall::SC_link_params params;
if (!copy_from_user(&params, user_params))
return EFAULT;
auto old_path = TRY(try_copy_kstring_from_user(params.old_path));
auto new_path = TRY(try_copy_kstring_from_user(params.new_path));
return VirtualFileSystem::the().link(old_path->view(), new_path->view(), current_directory());
}
KResultOr<FlatPtr> Process::sys$symlink(Userspace<const Syscall::SC_symlink_params*> user_params)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(cpath);
Syscall::SC_symlink_params params;
if (!copy_from_user(&params, user_params))
return EFAULT;
auto target = TRY(get_syscall_path_argument(params.target));
auto linkpath = TRY(get_syscall_path_argument(params.linkpath));
return VirtualFileSystem::the().symlink(target->view(), linkpath->view(), current_directory());
}
}