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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Devices/HID/HIDManagement.h>
#include <Kernel/Process.h>
namespace Kernel {
constexpr size_t map_name_max_size = 50;
KResultOr<FlatPtr> Process::sys$setkeymap(Userspace<const Syscall::SC_setkeymap_params*> user_params)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
REQUIRE_PROMISE(setkeymap);
if (!is_superuser())
return EPERM;
Syscall::SC_setkeymap_params params;
if (!copy_from_user(¶ms, user_params))
return EFAULT;
Keyboard::CharacterMapData character_map_data;
if (!copy_n_from_user(character_map_data.map, params.map, CHAR_MAP_SIZE))
return EFAULT;
if (!copy_n_from_user(character_map_data.shift_map, params.shift_map, CHAR_MAP_SIZE))
return EFAULT;
if (!copy_n_from_user(character_map_data.alt_map, params.alt_map, CHAR_MAP_SIZE))
return EFAULT;
if (!copy_n_from_user(character_map_data.altgr_map, params.altgr_map, CHAR_MAP_SIZE))
return EFAULT;
if (!copy_n_from_user(character_map_data.shift_altgr_map, params.shift_altgr_map, CHAR_MAP_SIZE))
return EFAULT;
auto map_name = get_syscall_path_argument(params.map_name);
if (map_name.is_error())
return map_name.error();
if (map_name.value()->length() > map_name_max_size)
return ENAMETOOLONG;
HIDManagement::the().set_maps(character_map_data, map_name.value()->view());
return 0;
}
KResultOr<FlatPtr> Process::sys$getkeymap(Userspace<const Syscall::SC_getkeymap_params*> user_params)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
REQUIRE_PROMISE(getkeymap);
Syscall::SC_getkeymap_params params;
if (!copy_from_user(¶ms, user_params))
return EFAULT;
String keymap_name = HIDManagement::the().keymap_name();
const Keyboard::CharacterMapData& character_maps = HIDManagement::the().character_maps();
if (!copy_to_user(params.map, character_maps.map, CHAR_MAP_SIZE * sizeof(u32)))
return EFAULT;
if (!copy_to_user(params.shift_map, character_maps.shift_map, CHAR_MAP_SIZE * sizeof(u32)))
return EFAULT;
if (!copy_to_user(params.alt_map, character_maps.alt_map, CHAR_MAP_SIZE * sizeof(u32)))
return EFAULT;
if (!copy_to_user(params.altgr_map, character_maps.altgr_map, CHAR_MAP_SIZE * sizeof(u32)))
return EFAULT;
if (!copy_to_user(params.shift_altgr_map, character_maps.shift_altgr_map, CHAR_MAP_SIZE * sizeof(u32)))
return EFAULT;
if (params.map_name.size < keymap_name.length())
return ENAMETOOLONG;
if (!copy_to_user(params.map_name.data, keymap_name.characters(), keymap_name.length()))
return EFAULT;
return 0;
}
}
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