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https://github.com/LadybirdBrowser/ladybird.git
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ac71775de5
This makes it a lot easier to return errors since we no longer have to worry about negating EFOO errors and can just return them flat.
101 lines
3.9 KiB
C++
101 lines
3.9 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <Kernel/Devices/KeyboardDevice.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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KResultOr<int> Process::sys$setkeymap(Userspace<const Syscall::SC_setkeymap_params*> user_params)
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{
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REQUIRE_PROMISE(setkeymap);
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if (!is_superuser())
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return EPERM;
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Syscall::SC_setkeymap_params params;
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if (!copy_from_user(¶ms, user_params))
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return EFAULT;
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Keyboard::CharacterMapData character_map_data;
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if (!copy_n_from_user(character_map_data.map, params.map, CHAR_MAP_SIZE))
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return EFAULT;
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if (!copy_n_from_user(character_map_data.shift_map, params.shift_map, CHAR_MAP_SIZE))
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return EFAULT;
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if (!copy_n_from_user(character_map_data.alt_map, params.alt_map, CHAR_MAP_SIZE))
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return EFAULT;
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if (!copy_n_from_user(character_map_data.altgr_map, params.altgr_map, CHAR_MAP_SIZE))
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return EFAULT;
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if (!copy_n_from_user(character_map_data.shift_altgr_map, params.shift_altgr_map, CHAR_MAP_SIZE))
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return EFAULT;
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auto map_name = get_syscall_path_argument(params.map_name);
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if (map_name.is_error()) {
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return map_name.error();
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}
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if (map_name.value().length() > map_name_max_size) {
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return ENAMETOOLONG;
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}
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KeyboardDevice::the().set_maps(character_map_data, map_name.value());
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return 0;
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}
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KResultOr<int> Process::sys$getkeymap(Userspace<const Syscall::SC_getkeymap_params*> user_params)
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{
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REQUIRE_PROMISE(getkeymap);
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Syscall::SC_getkeymap_params params;
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if (!copy_from_user(¶ms, user_params))
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return EFAULT;
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String keymap_name = KeyboardDevice::the().keymap_name();
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const Keyboard::CharacterMapData& character_maps = KeyboardDevice::the().character_maps();
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if (!copy_to_user(params.map, character_maps.map, CHAR_MAP_SIZE * sizeof(u32)))
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return EFAULT;
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if (!copy_to_user(params.shift_map, character_maps.shift_map, CHAR_MAP_SIZE * sizeof(u32)))
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return EFAULT;
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if (!copy_to_user(params.alt_map, character_maps.alt_map, CHAR_MAP_SIZE * sizeof(u32)))
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return EFAULT;
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if (!copy_to_user(params.altgr_map, character_maps.altgr_map, CHAR_MAP_SIZE * sizeof(u32)))
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return EFAULT;
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if (!copy_to_user(params.shift_altgr_map, character_maps.shift_altgr_map, CHAR_MAP_SIZE * sizeof(u32)))
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return EFAULT;
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if (params.map_name.size < keymap_name.length())
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return ENAMETOOLONG;
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if (!copy_to_user(params.map_name.data, keymap_name.characters(), keymap_name.length()))
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return EFAULT;
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return 0;
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}
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}
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