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Kernel+LibKeyboard: Enable querying the current keymap

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This commit is contained in:
Ben Wiederhake 2021-01-30 21:35:54 +01:00 • committed by Andreas Kling
parent d47ed35801
commit a2c21a55e1
6 changed files with 46 additions and 2 deletions
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33
Kernel/Syscalls/setkeymap.cpp → Kernel/Syscalls/keymap.cpp
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@ -29,6 +29,8 @@
namespace Kernel {
constexpr size_t map_name_max_size = 50;
int Process::sys$setkeymap(Userspace<const Syscall::SC_setkeymap_params*> user_params)
{
REQUIRE_PROMISE(setkeymap);
@ -57,7 +59,6 @@ int Process::sys$setkeymap(Userspace<const Syscall::SC_setkeymap_params*> user_p
if (map_name.is_error()) {
return map_name.error();
}
constexpr size_t map_name_max_size = 50;
if (map_name.value().length() > map_name_max_size) {
return -ENAMETOOLONG;
}
@ -66,4 +67,34 @@ int Process::sys$setkeymap(Userspace<const Syscall::SC_setkeymap_params*> user_p
return 0;
}
int Process::sys$getkeymap(Userspace<const Syscall::SC_getkeymap_params*> user_params)
{
REQUIRE_PROMISE(stdio);
Syscall::SC_getkeymap_params params;
if (!copy_from_user(&params, user_params))
return -EFAULT;
String keymap_name = KeyboardDevice::the().keymap_name();
const Keyboard::CharacterMapData& character_maps = KeyboardDevice::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;
}
}