mirror of
https://github.com/SerenityOS/serenity
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63 lines
2.4 KiB
C++
63 lines
2.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Devices/HID/Management.h>
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#include <Kernel/Tasks/Process.h>
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namespace Kernel {
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constexpr size_t map_name_max_size = 50;
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ErrorOr<FlatPtr> Process::sys$setkeymap(Userspace<Syscall::SC_setkeymap_params const*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::setkeymap));
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auto credentials = this->credentials();
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if (!credentials->is_superuser())
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return EPERM;
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auto params = TRY(copy_typed_from_user(user_params));
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Keyboard::CharacterMapData character_map_data;
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TRY(copy_n_from_user(character_map_data.map, params.map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.shift_map, params.shift_map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.alt_map, params.alt_map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.altgr_map, params.altgr_map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.shift_altgr_map, params.shift_altgr_map, CHAR_MAP_SIZE));
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auto map_name = TRY(get_syscall_path_argument(params.map_name));
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if (map_name->length() > map_name_max_size)
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return ENAMETOOLONG;
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HIDManagement::the().set_maps(move(map_name), character_map_data);
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return 0;
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}
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ErrorOr<FlatPtr> Process::sys$getkeymap(Userspace<Syscall::SC_getkeymap_params const*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::getkeymap));
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auto params = TRY(copy_typed_from_user(user_params));
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return HIDManagement::the().keymap_data().with([&](auto const& keymap_data) -> ErrorOr<FlatPtr> {
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if (params.map_name.size < keymap_data.character_map_name->length())
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return ENAMETOOLONG;
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TRY(copy_to_user(params.map_name.data, keymap_data.character_map_name->characters(), keymap_data.character_map_name->length()));
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auto const& character_maps = keymap_data.character_map;
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TRY(copy_n_to_user(params.map, character_maps.map, CHAR_MAP_SIZE));
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TRY(copy_n_to_user(params.shift_map, character_maps.shift_map, CHAR_MAP_SIZE));
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TRY(copy_n_to_user(params.alt_map, character_maps.alt_map, CHAR_MAP_SIZE));
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TRY(copy_n_to_user(params.altgr_map, character_maps.altgr_map, CHAR_MAP_SIZE));
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TRY(copy_n_to_user(params.shift_altgr_map, character_maps.shift_altgr_map, CHAR_MAP_SIZE));
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return 0;
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});
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}
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}
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