Merge pull request #1101 from martinetd/static-analysis

Static analysis fixes

backend/backend.c

@@ -203,6 +203,7 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
 				wlr_log(L_ERROR, "failed to start backend '%s'", name);
 				wlr_backend_destroy(backend);
 				wlr_session_destroy(session);
+				free(names);
 				return NULL;
 			}
 
@@ -210,12 +211,14 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
 				wlr_log(L_ERROR, "failed to add backend '%s'", name);
 				wlr_backend_destroy(backend);
 				wlr_session_destroy(session);
+				free(names);
 				return NULL;
 			}
 
 			name = strtok_r(NULL, ",", &saveptr);
 		}
 
+		free(names);
 		return backend;
 	}
 

backend/drm/atomic.c

@@ -83,8 +83,8 @@ static void set_plane_props(struct atomic *atom, struct wlr_drm_plane *plane,
 	// The src_* properties are in 16.16 fixed point
 	atomic_add(atom, id, props->src_x, 0);
 	atomic_add(atom, id, props->src_y, 0);
-	atomic_add(atom, id, props->src_w, plane->surf.width << 16);
-	atomic_add(atom, id, props->src_h, plane->surf.height << 16);
+	atomic_add(atom, id, props->src_w, (uint64_t)plane->surf.width << 16);
+	atomic_add(atom, id, props->src_h, (uint64_t)plane->surf.height << 16);
 	atomic_add(atom, id, props->crtc_w, plane->surf.width);
 	atomic_add(atom, id, props->crtc_h, plane->surf.height);
 	atomic_add(atom, id, props->fb_id, fb_id);

backend/drm/drm.c

@@ -973,7 +973,7 @@ int handle_drm_event(int fd, uint32_t mask, void *data) {
 }
 
 void restore_drm_outputs(struct wlr_drm_backend *drm) {
-	uint64_t to_close = (1 << wl_list_length(&drm->outputs)) - 1;
+	uint64_t to_close = (1L << wl_list_length(&drm->outputs)) - 1;
 
 	struct wlr_drm_connector *conn;
 	wl_list_for_each(conn, &drm->outputs, link) {

backend/headless/input_device.c

@@ -39,7 +39,7 @@ struct wlr_input_device *wlr_headless_add_input_device(
 		wlr_device->keyboard = calloc(1, sizeof(struct wlr_keyboard));
 		if (wlr_device->keyboard == NULL) {
 			wlr_log(L_ERROR, "Unable to allocate wlr_keyboard");
-			return NULL;
+			goto error;
 		}
 		wlr_keyboard_init(wlr_device->keyboard, NULL);
 		break;
@@ -47,7 +47,7 @@ struct wlr_input_device *wlr_headless_add_input_device(
 		wlr_device->pointer = calloc(1, sizeof(struct wlr_pointer));
 		if (wlr_device->pointer == NULL) {
 			wlr_log(L_ERROR, "Unable to allocate wlr_pointer");
-			return NULL;
+			goto error;
 		}
 		wlr_pointer_init(wlr_device->pointer, NULL);
 		break;
@@ -55,7 +55,7 @@ struct wlr_input_device *wlr_headless_add_input_device(
 		wlr_device->touch = calloc(1, sizeof(struct wlr_touch));
 		if (wlr_device->touch == NULL) {
 			wlr_log(L_ERROR, "Unable to allocate wlr_touch");
-			return NULL;
+			goto error;
 		}
 		wlr_touch_init(wlr_device->touch, NULL);
 		break;
@@ -63,7 +63,7 @@ struct wlr_input_device *wlr_headless_add_input_device(
 		wlr_device->tablet_tool = calloc(1, sizeof(struct wlr_tablet_tool));
 		if (wlr_device->tablet_tool == NULL) {
 			wlr_log(L_ERROR, "Unable to allocate wlr_tablet_tool");
-			return NULL;
+			goto error;
 		}
 		wlr_tablet_tool_init(wlr_device->tablet_tool, NULL);
 		break;
@@ -71,7 +71,7 @@ struct wlr_input_device *wlr_headless_add_input_device(
 		wlr_device->tablet_pad = calloc(1, sizeof(struct wlr_tablet_pad));
 		if (wlr_device->tablet_pad == NULL) {
 			wlr_log(L_ERROR, "Unable to allocate wlr_tablet_pad");
-			return NULL;
+			goto error;
 		}
 		wlr_tablet_pad_init(wlr_device->tablet_pad, NULL);
 		break;
@@ -84,4 +84,7 @@ struct wlr_input_device *wlr_headless_add_input_device(
 	}
 
 	return wlr_device;
+error:
+	free(device);
+	return NULL;
 }

backend/session/direct-ipc.c

@@ -159,7 +159,9 @@ static void communicate(int sock) {
 			}
 error:
 			send_msg(sock, ret ? -1 : fd, &ret, sizeof(ret));
-			close(fd);
+			if (fd >= 0) {
+				close(fd);
+			}
 
 			break;
 

backend/wayland/output.c

@@ -220,7 +220,7 @@ static void xdg_toplevel_handle_configure(void *data, struct zxdg_toplevel_v6 *x
 	struct wlr_wl_output *output = data;
 	assert(output && output->xdg_toplevel == xdg_toplevel);
 
-	if (width == 0 && height == 0) {
+	if (width == 0 || height == 0) {
 		return;
 	}
 	// loop over states for maximized etc?

backend/wayland/wl_seat.c

@@ -38,10 +38,8 @@ static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer,
 	}
 
 	struct wlr_wl_output *output = wl_surface_get_user_data(surface);
+	assert(output);
 	struct wlr_wl_pointer *pointer = output_get_pointer(output);
-	if (output == NULL) {
-		return;
-	}
 
 	output->enter_serial = serial;
 	backend->current_pointer = pointer;
@@ -56,6 +54,7 @@ static void pointer_handle_leave(void *data, struct wl_pointer *wl_pointer,
 	}
 
 	struct wlr_wl_output *output = wl_surface_get_user_data(surface);
+	assert(output);
 	output->enter_serial = 0;
 
 	if (backend->current_pointer == NULL ||

backend/x11/backend.c

@@ -245,13 +245,13 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
 	x11->xlib_conn = XOpenDisplay(x11_display);
 	if (!x11->xlib_conn) {
 		wlr_log(L_ERROR, "Failed to open X connection");
-		return NULL;
+		goto error_x11;
 	}
 
 	x11->xcb_conn = XGetXCBConnection(x11->xlib_conn);
 	if (!x11->xcb_conn || xcb_connection_has_error(x11->xcb_conn)) {
 		wlr_log(L_ERROR, "Failed to open xcb connection");
-		goto error_x11;
+		goto error_display;
 	}
 
 	XSetEventQueueOwner(x11->xlib_conn, XCBOwnsEventQueue);
@@ -262,7 +262,7 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
 	x11->event_source = wl_event_loop_add_fd(ev, fd, events, x11_event, x11);
 	if (!x11->event_source) {
 		wlr_log(L_ERROR, "Could not create event source");
-		goto error_x11;
+		goto error_display;
 	}
 
 	x11->screen = xcb_setup_roots_iterator(xcb_get_setup(x11->xcb_conn)).data;
@@ -291,8 +291,9 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
 
 error_event:
 	wl_event_source_remove(x11->event_source);
-error_x11:
+error_display:
 	XCloseDisplay(x11->xlib_conn);
+error_x11:
 	free(x11);
 	return NULL;
 }

render/wlr_renderer.c

@@ -25,9 +25,12 @@ void wlr_renderer_init(struct wlr_renderer *renderer,
 }
 
 void wlr_renderer_destroy(struct wlr_renderer *r) {
+	if (!r) {
+		return;
+	}
 	wlr_signal_emit_safe(&r->events.destroy, r);
 
-	if (r && r->impl && r->impl->destroy) {
+	if (r->impl && r->impl->destroy) {
 		r->impl->destroy(r);
 	} else {
 		free(r);

rootston/layer_shell.c

@@ -381,12 +381,6 @@ void handle_layer_shell_surface(struct wl_listener *listener, void *data) {
 		layer_surface->client_pending.margin.bottom,
 		layer_surface->client_pending.margin.left);
 
-	struct roots_layer_surface *roots_surface =
-		calloc(1, sizeof(struct roots_layer_surface));
-	if (!roots_surface) {
-		return;
-	}
-
 	if (!layer_surface->output) {
 		struct roots_input *input = desktop->server->input;
 		struct roots_seat *seat = input_last_active_seat(input);
@@ -409,6 +403,12 @@ void handle_layer_shell_surface(struct wl_listener *listener, void *data) {
 		}
 	}
 
+	struct roots_layer_surface *roots_surface =
+		calloc(1, sizeof(struct roots_layer_surface));
+	if (!roots_surface) {
+		return;
+	}
+
 	roots_surface->surface_commit.notify = handle_surface_commit;
 	wl_signal_add(&layer_surface->surface->events.commit,
 		&roots_surface->surface_commit);

types/wlr_export_dmabuf_v1.c

@@ -84,6 +84,7 @@ static void manager_handle_capture_output(struct wl_client *client,
 		&zwlr_export_dmabuf_frame_v1_interface, version, id);
 	if (frame->resource == NULL) {
 		wl_client_post_no_memory(client);
+		free(frame);
 		return;
 	}
 	wl_resource_set_implementation(frame->resource, &frame_impl, frame,

types/wlr_keyboard.c

@@ -144,6 +144,7 @@ void wlr_keyboard_init(struct wlr_keyboard *kb,
 	wl_signal_init(&kb->events.modifiers);
 	wl_signal_init(&kb->events.keymap);
 	wl_signal_init(&kb->events.repeat_info);
+	kb->keymap_fd = -1;
 
 	// Sane defaults
 	kb->repeat_info.rate = 25;
@@ -156,7 +157,9 @@ void wlr_keyboard_destroy(struct wlr_keyboard *kb) {
 	}
 	xkb_state_unref(kb->xkb_state);
 	xkb_keymap_unref(kb->keymap);
-	close(kb->keymap_fd);
+	if (kb->keymap_fd >= 0) {
+		close(kb->keymap_fd);
+	}
 	if (kb->impl && kb->impl->destroy) {
 		kb->impl->destroy(kb);
 	} else {
@@ -212,7 +215,7 @@ void wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
 	keymap_str = xkb_keymap_get_as_string(kb->keymap,
 		XKB_KEYMAP_FORMAT_TEXT_V1);
 	kb->keymap_size = strlen(keymap_str) + 1;
-	if (kb->keymap_fd) {
+	if (kb->keymap_fd >= 0) {
 		close(kb->keymap_fd);
 	}
 	kb->keymap_fd = os_create_anonymous_file(kb->keymap_size);
@@ -228,6 +231,7 @@ void wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
 	}
 	strcpy(ptr, keymap_str);
 	free(keymap_str);
+	munmap(ptr, kb->keymap_size);
 
 	for (size_t i = 0; i < kb->num_keycodes; ++i) {
 		xkb_keycode_t keycode = kb->keycodes[i] + 8;
@@ -244,7 +248,10 @@ err:
 	kb->xkb_state = NULL;
 	xkb_keymap_unref(keymap);
 	kb->keymap = NULL;
-	close(kb->keymap_fd);
+	if (kb->keymap_fd >= 0) {
+		close(kb->keymap_fd);
+		kb->keymap_fd = -1;
+	}
 	free(keymap_str);
 }
 

types/wlr_output.c

@@ -486,8 +486,8 @@ bool wlr_output_swap_buffers(struct wlr_output *output, struct timespec *when,
 		pixman_region32_intersect(&render_damage, &render_damage, damage);
 	}
 
+	struct timespec now;
 	if (when == NULL) {
-		struct timespec now;
 		clock_gettime(CLOCK_MONOTONIC, &now);
 		when = &now;
 	}

util/os-compatibility.c

@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include "util/os-compatibility.h"
@@ -61,6 +62,7 @@ int create_tmpfile_cloexec(char *tmpname)
 {
 	int fd;
 
+	mode_t prev_umask = umask(0066);
 #ifdef HAVE_MKOSTEMP
 	fd = mkostemp(tmpname, O_CLOEXEC);
 	if (fd >= 0)
@@ -72,6 +74,7 @@ int create_tmpfile_cloexec(char *tmpname)
 		unlink(tmpname);
 	}
 #endif
+	umask(prev_umask);
 
 	return fd;
 }