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keyboard: don't change current keymap on wlr_keyboard_set_keymap() error

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This function was unsetting the keymap on error. Instead, let's
leave the current keymap untouched on error.
This commit is contained in:
Simon Ser 2023-05-10 20:52:09 +02:00
parent 69aeccddb7
commit e725f234d7
1 changed files with 43 additions and 48 deletions
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91
types/wlr_keyboard.c
View file

@ -174,17 +174,48 @@ void wlr_keyboard_led_update(struct wlr_keyboard *kb, uint32_t leds) {
}
}
bool wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
struct xkb_keymap *keymap) {
bool wlr_keyboard_set_keymap(struct wlr_keyboard *kb, struct xkb_keymap *keymap) {
struct xkb_state *xkb_state = xkb_state_new(kb->keymap);
if (xkb_state == NULL) {
wlr_log(WLR_ERROR, "Failed to create XKB state");
return false;
}
char *keymap_str = xkb_keymap_get_as_string(kb->keymap, XKB_KEYMAP_FORMAT_TEXT_V1);
if (keymap_str == NULL) {
wlr_log(WLR_ERROR, "Failed to get string version of keymap");
goto error_xkb_state;
}
size_t keymap_size = strlen(kb->keymap_string) + 1;
int rw_fd = -1, ro_fd = -1;
if (!allocate_shm_file_pair(keymap_size, &rw_fd, &ro_fd)) {
wlr_log(WLR_ERROR, "Failed to allocate shm file for keymap");
goto error_keymap_str;
}
void *dst = mmap(NULL, keymap_size, PROT_READ | PROT_WRITE, MAP_SHARED, rw_fd, 0);
close(rw_fd);
if (dst == MAP_FAILED) {
wlr_log_errno(WLR_ERROR, "mmap failed");
close(ro_fd);
goto error_keymap_str;
}
memcpy(dst, keymap_str, keymap_size);
munmap(dst, keymap_size);
xkb_keymap_unref(kb->keymap);
kb->keymap = xkb_keymap_ref(keymap);
xkb_state_unref(kb->xkb_state);
kb->xkb_state = xkb_state_new(kb->keymap);
if (kb->xkb_state == NULL) {
wlr_log(WLR_ERROR, "Failed to create XKB state");
goto err;
kb->xkb_state = xkb_state;
free(kb->keymap_string);
kb->keymap_string = keymap_str;
kb->keymap_size = keymap_size;
if (kb->keymap_fd >= 0) {
close(kb->keymap_fd);
}
kb->keymap_fd = ro_fd;
const char *led_names[WLR_LED_COUNT] = {
XKB_LED_NAME_NUM,
@ -210,40 +241,6 @@ bool wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
kb->mod_indexes[i] = xkb_map_mod_get_index(kb->keymap, mod_names[i]);
}
char *tmp_keymap_string = xkb_keymap_get_as_string(kb->keymap,
XKB_KEYMAP_FORMAT_TEXT_V1);
if (tmp_keymap_string == NULL) {
wlr_log(WLR_ERROR, "Failed to get string version of keymap");
goto err;
}
free(kb->keymap_string);
kb->keymap_string = tmp_keymap_string;
kb->keymap_size = strlen(kb->keymap_string) + 1;
int rw_fd = -1, ro_fd = -1;
if (!allocate_shm_file_pair(kb->keymap_size, &rw_fd, &ro_fd)) {
wlr_log(WLR_ERROR, "Failed to allocate shm file for keymap");
goto err;
}
void *dst = mmap(NULL, kb->keymap_size, PROT_READ | PROT_WRITE,
MAP_SHARED, rw_fd, 0);
if (dst == MAP_FAILED) {
wlr_log_errno(WLR_ERROR, "mmap failed");
close(rw_fd);
close(ro_fd);
goto err;
}
memcpy(dst, kb->keymap_string, kb->keymap_size);
munmap(dst, kb->keymap_size);
close(rw_fd);
if (kb->keymap_fd >= 0) {
close(kb->keymap_fd);
}
kb->keymap_fd = ro_fd;
for (size_t i = 0; i < kb->num_keycodes; ++i) {
xkb_keycode_t keycode = kb->keycodes[i] + 8;
xkb_state_update_key(kb->xkb_state, keycode, XKB_KEY_DOWN);
@ -252,15 +249,13 @@ bool wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
keyboard_modifier_update(kb);
wl_signal_emit_mutable(&kb->events.keymap, kb);
return true;
err:
xkb_state_unref(kb->xkb_state);
kb->xkb_state = NULL;
xkb_keymap_unref(keymap);
kb->keymap = NULL;
free(kb->keymap_string);
kb->keymap_string = NULL;
error_keymap_str:
free(keymap_str);
error_xkb_state:
xkb_state_unref(xkb_state);
return false;
}