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-rw-r--r--backend/drm/drm.c17
-rw-r--r--backend/libinput/events.c5
-rw-r--r--backend/multi/backend.c8
-rw-r--r--backend/wayland/output.c12
-rw-r--r--backend/wayland/wl_seat.c8
-rw-r--r--examples/touch.c4
-rw-r--r--include/wlr/util/list.h37
-rw-r--r--util/list.c37
8 files changed, 103 insertions, 25 deletions
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index 424c7685..9b4cee2f 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -748,8 +748,13 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *backend) {
parse_edid(&output->output, edid_len, edid);
free(edid);
+ if (list_add(backend->outputs, output) == -1) {
+ wlr_log_errno(L_ERROR, "Allocation failed");
+ drmModeFreeConnector(conn);
+ free(output);
+ continue;
+ }
wlr_output_create_global(&output->output, backend->display);
- list_add(backend->outputs, output);
wlr_log(L_INFO, "Found display '%s'", output->output.name);
} else {
output = backend->outputs->items[index];
@@ -764,6 +769,10 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *backend) {
for (int i = 0; i < conn->count_modes; ++i) {
struct wlr_drm_output_mode *mode = calloc(1,
sizeof(struct wlr_drm_output_mode));
+ if (!mode) {
+ wlr_log_errno(L_ERROR, "Allocation failed");
+ continue;
+ }
mode->mode = conn->modes[i];
mode->wlr_mode.width = mode->mode.hdisplay;
mode->wlr_mode.height = mode->mode.vdisplay;
@@ -773,7 +782,11 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *backend) {
mode->wlr_mode.width, mode->wlr_mode.height,
mode->wlr_mode.refresh);
- list_add(output->output.modes, mode);
+ if (list_add(backend->outputs, output) == -1) {
+ wlr_log_errno(L_ERROR, "Allocation failed");
+ free(mode);
+ continue;
+ }
}
output->state = WLR_DRM_OUTPUT_NEEDS_MODESET;
diff --git a/backend/libinput/events.c b/backend/libinput/events.c
index dc5e4cb1..2a396536 100644
--- a/backend/libinput/events.c
+++ b/backend/libinput/events.c
@@ -44,11 +44,14 @@ static struct wlr_input_device *allocate_device(
return NULL;
}
struct wlr_input_device *wlr_dev = &wlr_libinput_dev->wlr_input_device;
+ if (list_add(wlr_devices, wlr_dev) == -1) {
+ free(wlr_libinput_dev);
+ return NULL;
+ }
wlr_libinput_dev->handle = libinput_dev;
libinput_device_ref(libinput_dev);
wlr_input_device_init(wlr_dev, type, &input_device_impl,
name, vendor, product);
- list_add(wlr_devices, wlr_dev);
return wlr_dev;
}
diff --git a/backend/multi/backend.c b/backend/multi/backend.c
index 290b9678..33b26a0a 100644
--- a/backend/multi/backend.c
+++ b/backend/multi/backend.c
@@ -120,6 +120,12 @@ void wlr_multi_backend_add(struct wlr_backend *_multi,
wlr_log(L_ERROR, "Could not add backend: allocation failed");
return;
}
+ if (list_add(multi->backends, sub) == -1) {
+ wlr_log(L_ERROR, "Could not add backend: allocation failed");
+ free(sub);
+ return;
+ }
+
sub->backend = backend;
sub->container = &multi->backend;
@@ -137,8 +143,6 @@ void wlr_multi_backend_add(struct wlr_backend *_multi,
wl_signal_add(&backend->events.input_remove, &sub->input_remove);
wl_signal_add(&backend->events.output_add, &sub->output_add);
wl_signal_add(&backend->events.output_remove, &sub->output_remove);
-
- list_add(multi->backends, sub);
}
struct wlr_session *wlr_multi_get_session(struct wlr_backend *_backend) {
diff --git a/backend/wayland/output.c b/backend/wayland/output.c
index cb286316..786dc46e 100644
--- a/backend/wayland/output.c
+++ b/backend/wayland/output.c
@@ -236,7 +236,8 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *_backend) {
output->egl_surface, output->egl_surface,
output->backend->egl.context)) {
wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
- return false;
+ free(output);
+ return NULL;
}
glViewport(0, 0, wlr_output->width, wlr_output->height);
@@ -248,11 +249,16 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *_backend) {
if (!eglSwapBuffers(output->backend->egl.display, output->egl_surface)) {
wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
- return false;
+ free(output);
+ return NULL;
}
+ if (list_add(backend->outputs, wlr_output) == -1) {
+ wlr_log(L_ERROR, "Allocation failed");
+ free(output);
+ return NULL;
+ }
wlr_output_create_global(wlr_output, backend->local_display);
- list_add(backend->outputs, wlr_output);
wl_signal_emit(&backend->backend.events.output_add, wlr_output);
return wlr_output;
}
diff --git a/backend/wayland/wl_seat.c b/backend/wayland/wl_seat.c
index 4668a72b..a4cc0ba5 100644
--- a/backend/wayland/wl_seat.c
+++ b/backend/wayland/wl_seat.c
@@ -188,7 +188,7 @@ static struct wlr_input_device *allocate_device(struct wlr_wl_backend *backend,
enum wlr_input_device_type type) {
struct wlr_wl_input_device *wlr_wl_dev;
if (!(wlr_wl_dev = calloc(1, sizeof(struct wlr_wl_input_device)))) {
- wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
+ wlr_log_errno(L_ERROR, "Allocation failed");
return NULL;
}
@@ -200,7 +200,11 @@ static struct wlr_input_device *allocate_device(struct wlr_wl_backend *backend,
struct wlr_input_device *wlr_device = &wlr_wl_dev->wlr_input_device;
wlr_input_device_init(wlr_device, type, &input_device_impl,
name, vendor, product);
- list_add(backend->devices, wlr_device);
+ if (list_add(backend->devices, wlr_device) == -1) {
+ wlr_log_errno(L_ERROR, "Allocation failed");
+ free(wlr_wl_dev);
+ return NULL;
+ }
return wlr_device;
}
diff --git a/examples/touch.c b/examples/touch.c
index a32c76ba..7e01a6c2 100644
--- a/examples/touch.c
+++ b/examples/touch.c
@@ -65,7 +65,9 @@ static void handle_touch_down(struct touch_state *tstate, int32_t slot,
point->slot = slot;
point->x = x / width;
point->y = y / height;
- list_add(sample->touch_points, point);
+ if (list_add(sample->touch_points, point) == -1) {
+ free(point);
+ }
}
static void handle_touch_up(struct touch_state *tstate, int32_t slot) {
diff --git a/include/wlr/util/list.h b/include/wlr/util/list.h
index 0c175132..6e746ec4 100644
--- a/include/wlr/util/list.h
+++ b/include/wlr/util/list.h
@@ -9,16 +9,45 @@ typedef struct {
void **items;
} list_t;
+/**
+ * Creates a new list, may return `NULL` on failure
+ */
list_t *list_create(void);
void list_free(list_t *list);
void list_foreach(list_t *list, void (*callback)(void *item));
-void list_add(list_t *list, void *item);
-void list_push(list_t *list, void *item);
-void list_insert(list_t *list, size_t index, void *item);
+/**
+ * Add `item` to the end of a list.
+ * Returns: new list length or `-1` on failure
+ */
+int list_add(list_t *list, void *item);
+/**
+ * Add `item` to the end of a list.
+ * Returns: new list length or `-1` on failure
+ */
+int list_push(list_t *list, void *item);
+/**
+ * Place `item` into index `index` in the list
+ * Returns: new list length or `-1` on failure
+ */
+int list_insert(list_t *list, size_t index, void *item);
+/**
+ * Remove an item from the list
+ */
void list_del(list_t *list, size_t index);
+/**
+ * Remove and return an item from the end of the list
+ */
void *list_pop(list_t *list);
+/**
+ * Get a reference to the last item of a list without removal
+ */
void *list_peek(list_t *list);
-void list_cat(list_t *list, list_t *source);
+/**
+ * Append each item in `source` to `list`
+ * Does not modify `source`
+ * Returns: new list length or `-1` on failure
+ */
+int list_cat(list_t *list, list_t *source);
// See qsort. Remember to use *_qsort functions as compare functions,
// because they dereference the left and right arguments first!
void list_qsort(list_t *list, int compare(const void *left, const void *right));
diff --git a/util/list.c b/util/list.c
index 44fba4db..4abd689b 100644
--- a/util/list.c
+++ b/util/list.c
@@ -1,5 +1,6 @@
#include <stdio.h>
#include <stdlib.h>
+#include <stdbool.h>
#include <string.h>
#include <stddef.h>
#include <wlr/util/list.h>
@@ -19,11 +20,16 @@ list_t *list_create(void) {
return list;
}
-static void list_resize(list_t *list) {
+static bool list_resize(list_t *list) {
if (list->length == list->capacity) {
+ void *new_items = realloc(list->items, sizeof(void*) * (list->capacity + 10));
+ if (!new_items) {
+ return false;
+ }
list->capacity += 10;
- list->items = realloc(list->items, sizeof(void*) * list->capacity);
+ list->items = new_items;
}
+ return true;
}
void list_free(list_t *list) {
@@ -43,20 +49,26 @@ void list_foreach(list_t *list, void (*callback)(void *item)) {
}
}
-void list_add(list_t *list, void *item) {
- list_resize(list);
+int list_add(list_t *list, void *item) {
+ if (!list_resize(list)) {
+ return -1;
+ }
list->items[list->length++] = item;
+ return list->length;
}
-void list_push(list_t *list, void *item) {
- list_add(list, item);
+int list_push(list_t *list, void *item) {
+ return list_add(list, item);
}
-void list_insert(list_t *list, size_t index, void *item) {
- list_resize(list);
+int list_insert(list_t *list, size_t index, void *item) {
+ if (!list_resize(list)) {
+ return -1;
+ }
memmove(&list->items[index + 1], &list->items[index], sizeof(void*) * (list->length - index));
list->length++;
list->items[index] = item;
+ return list->length;
}
void list_del(list_t *list, size_t index) {
@@ -74,11 +86,16 @@ void *list_peek(list_t *list) {
return list->items[list->length - 1];
}
-void list_cat(list_t *list, list_t *source) {
+int list_cat(list_t *list, list_t *source) {
+ size_t old_len = list->length;
size_t i;
for (i = 0; i < source->length; ++i) {
- list_add(list, source->items[i]);
+ if (list_add(list, source->items[i]) == -1) {
+ list->length = old_len;
+ return -1;
+ }
}
+ return list->length;
}
void list_qsort(list_t *list, int compare(const void *left, const void *right)) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 05:27:33 +0000