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fix(keymap): Fix overflow in get/set bindings (#3205)

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With the binding referenced to as uint8_t the keymap would be incorrect if more than 256 positions were in use, going to a uint16_t gives large enough headroom to not have to worry
This commit is contained in:
Willow Herring
2026-01-16 23:55:13 +00:00
committed by GitHub
parent 24487bd974
commit ab46f48dde
2 changed files with 5 additions and 5 deletions
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4
app/include/zmk/keymap.h
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@@ -55,8 +55,8 @@ int zmk_keymap_layer_to(zmk_keymap_layer_id_t layer, bool locking);
const char *zmk_keymap_layer_name(zmk_keymap_layer_id_t layer);
const struct zmk_behavior_binding *zmk_keymap_get_layer_binding_at_idx(zmk_keymap_layer_id_t layer,
uint8_t binding_idx);
int zmk_keymap_set_layer_binding_at_idx(zmk_keymap_layer_id_t layer, uint8_t binding_idx,
uint16_t binding_idx);
int zmk_keymap_set_layer_binding_at_idx(zmk_keymap_layer_id_t layer, uint16_t binding_idx,
const struct zmk_behavior_binding binding);
#if IS_ENABLED(CONFIG_ZMK_KEYMAP_LAYER_REORDERING)

6
app/src/keymap.c
View File

@@ -242,7 +242,7 @@ const char *zmk_keymap_layer_name(zmk_keymap_layer_id_t layer_id) {
}
const struct zmk_behavior_binding *
zmk_keymap_get_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint8_t binding_idx) {
zmk_keymap_get_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint16_t binding_idx) {
if (binding_idx >= ZMK_KEYMAP_LEN) {
return NULL;
}
@@ -277,7 +277,7 @@ zmk_keymap_get_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint8_t bind
static uint8_t zmk_keymap_layer_pending_changes[ZMK_KEYMAP_LAYERS_LEN][PENDING_ARRAY_SIZE];
int zmk_keymap_set_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint8_t binding_idx,
int zmk_keymap_set_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint16_t binding_idx,
struct zmk_behavior_binding binding) {
if (binding_idx >= ZMK_KEYMAP_LEN) {
return -EINVAL;
@@ -322,7 +322,7 @@ int zmk_keymap_set_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint8_t
#else
int zmk_keymap_set_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint8_t binding_idx,
int zmk_keymap_set_layer_binding_at_idx(zmk_keymap_layer_id_t layer_id, uint16_t binding_idx,
struct zmk_behavior_binding binding) {
return -ENOTSUP;
}