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79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
62 lines
2.3 KiB
C++
62 lines
2.3 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/HIDManagement.h>
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#include <Kernel/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$setkeymap(Userspace<const Syscall::SC_setkeymap_params*> user_params)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
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REQUIRE_PROMISE(setkeymap);
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if (!is_superuser())
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return EPERM;
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auto params = TRY(copy_typed_from_user(user_params));
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Keyboard::CharacterMapData character_map_data;
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TRY(copy_n_from_user(character_map_data.map, params.map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.shift_map, params.shift_map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.alt_map, params.alt_map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.altgr_map, params.altgr_map, CHAR_MAP_SIZE));
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TRY(copy_n_from_user(character_map_data.shift_altgr_map, params.shift_altgr_map, CHAR_MAP_SIZE));
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auto map_name = TRY(get_syscall_path_argument(params.map_name));
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if (map_name->length() > map_name_max_size)
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return ENAMETOOLONG;
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HIDManagement::the().set_maps(character_map_data, map_name->view());
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return 0;
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}
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ErrorOr<FlatPtr> Process::sys$getkeymap(Userspace<const Syscall::SC_getkeymap_params*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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REQUIRE_PROMISE(getkeymap);
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auto params = TRY(copy_typed_from_user(user_params));
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String keymap_name = HIDManagement::the().keymap_name();
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const Keyboard::CharacterMapData& character_maps = HIDManagement::the().character_maps();
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TRY(copy_to_user(params.map, character_maps.map, CHAR_MAP_SIZE * sizeof(u32)));
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TRY(copy_to_user(params.shift_map, character_maps.shift_map, CHAR_MAP_SIZE * sizeof(u32)));
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TRY(copy_to_user(params.alt_map, character_maps.alt_map, CHAR_MAP_SIZE * sizeof(u32)));
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TRY(copy_to_user(params.altgr_map, character_maps.altgr_map, CHAR_MAP_SIZE * sizeof(u32)));
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TRY(copy_to_user(params.shift_altgr_map, character_maps.shift_altgr_map, CHAR_MAP_SIZE * sizeof(u32)));
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if (params.map_name.size < keymap_name.length())
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return ENAMETOOLONG;
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TRY(copy_to_user(params.map_name.data, keymap_name.characters(), keymap_name.length()));
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return 0;
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}
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}
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