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Merge pull request #664 from emersion/fix-various-use-after-free

Browse Source 
Fix a bunch of use-after-free
master
Drew DeVault 7 years ago committed by GitHub
parent bd9583a7e8 ca3a947864
commit 5ad15c90d5
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 54 additions and 21 deletions
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3
include/rootston/output.h
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@ -19,7 +19,8 @@ struct roots_output {
struct wlr_output_damage *damage;
struct wl_listener destroy;
struct wl_listener frame;
struct wl_listener damage_frame;
struct wl_listener damage_destroy;
};
void handle_new_output(struct wl_listener *listener, void *data);

1
include/wlr/types/wlr_compositor.h
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@ -14,6 +14,7 @@ struct wlr_compositor {
struct {
struct wl_signal new_surface;
struct wl_signal destroy;
} events;
};

3
include/wlr/xwm.h
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@ -93,7 +93,8 @@ struct wlr_xwm {
const xcb_query_extension_reply_t *xfixes;
struct wl_listener compositor_surface_create;
struct wl_listener compositor_new_surface;
struct wl_listener compositor_destroy;
struct wl_listener seat_selection;
struct wl_listener seat_primary_selection;
};

38
rootston/output.c
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@ -514,12 +514,6 @@ damage_finish:
pixman_region32_fini(&damage);
}
static void output_damage_handle_frame(struct wl_listener *listener,
void *data) {
struct roots_output *output = wl_container_of(listener, output, frame);
render_output(output);
}
void output_damage_whole(struct roots_output *output) {
wlr_output_damage_add_whole(output->damage);
}
@ -681,19 +675,37 @@ static void set_mode(struct wlr_output *output,
}
}
static void output_handle_destroy(struct wl_listener *listener, void *data) {
struct roots_output *output = wl_container_of(listener, output, destroy);
static void output_destroy(struct roots_output *output) {
// TODO: cursor
//example_config_configure_cursor(sample->config, sample->cursor,
// sample->compositor);
wl_list_remove(&output->link);
wl_list_remove(&output->destroy.link);
wl_list_remove(&output->frame.link);
wl_list_remove(&output->damage_frame.link);
wl_list_remove(&output->damage_destroy.link);
free(output);
}
static void output_handle_destroy(struct wl_listener *listener, void *data) {
struct roots_output *output = wl_container_of(listener, output, destroy);
output_destroy(output);
}
static void output_damage_handle_frame(struct wl_listener *listener,
void *data) {
struct roots_output *output =
wl_container_of(listener, output, damage_frame);
render_output(output);
}
static void output_damage_handle_destroy(struct wl_listener *listener,
void *data) {
struct roots_output *output =
wl_container_of(listener, output, damage_destroy);
output_destroy(output);
}
void handle_new_output(struct wl_listener *listener, void *data) {
struct roots_desktop *desktop = wl_container_of(listener, desktop,
new_output);
@ -722,8 +734,10 @@ void handle_new_output(struct wl_listener *listener, void *data) {
output->destroy.notify = output_handle_destroy;
wl_signal_add(&wlr_output->events.destroy, &output->destroy);
output->frame.notify = output_damage_handle_frame;
wl_signal_add(&output->damage->events.frame, &output->frame);
output->damage_frame.notify = output_damage_handle_frame;
wl_signal_add(&output->damage->events.frame, &output->damage_frame);
output->damage_destroy.notify = output_damage_handle_destroy;
wl_signal_add(&output->damage->events.destroy, &output->damage_destroy);
struct roots_output_config *output_config =
roots_config_get_output(config, wlr_output);

2
rootston/seat.c
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@ -408,10 +408,10 @@ static void handle_keyboard_destroy(struct wl_listener *listener, void *data) {
struct roots_keyboard *keyboard =
wl_container_of(listener, keyboard, device_destroy);
struct roots_seat *seat = keyboard->seat;
roots_keyboard_destroy(keyboard);
wl_list_remove(&keyboard->device_destroy.link);
wl_list_remove(&keyboard->keyboard_key.link);
wl_list_remove(&keyboard->keyboard_modifiers.link);
roots_keyboard_destroy(keyboard);
seat_update_capabilities(seat);
}

2
types/wlr_compositor.c
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@ -90,6 +90,7 @@ void wlr_compositor_destroy(struct wlr_compositor *compositor) {
if (compositor == NULL) {
return;
}
wlr_signal_emit_safe(&compositor->events.destroy, compositor);
wl_list_remove(&compositor->display_destroy.link);
wl_global_destroy(compositor->wl_global);
free(compositor);
@ -195,6 +196,7 @@ struct wlr_compositor *wlr_compositor_create(struct wl_display *display,
wl_list_init(&compositor->wl_resources);
wl_list_init(&compositor->surfaces);
wl_signal_init(&compositor->events.new_surface);
wl_signal_init(&compositor->events.destroy);
compositor->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &compositor->display_destroy);

26
xwayland/xwm.c
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@ -1019,11 +1019,11 @@ static int x11_event_handler(int fd, uint32_t mask, void *data) {
return count;
}
static void handle_compositor_surface_create(struct wl_listener *listener,
static void handle_compositor_new_surface(struct wl_listener *listener,
void *data) {
struct wlr_surface *surface = data;
struct wlr_xwm *xwm =
wl_container_of(listener, xwm, compositor_surface_create);
wl_container_of(listener, xwm, compositor_new_surface);
struct wlr_surface *surface = data;
if (wl_resource_get_client(surface->resource) != xwm->xwayland->client) {
return;
}
@ -1043,6 +1043,16 @@ static void handle_compositor_surface_create(struct wl_listener *listener,
}
}
static void handle_compositor_destroy(struct wl_listener *listener,
void *data) {
struct wlr_xwm *xwm =
wl_container_of(listener, xwm, compositor_destroy);
wl_list_remove(&xwm->compositor_new_surface.link);
wl_list_remove(&xwm->compositor_destroy.link);
wl_list_init(&xwm->compositor_new_surface.link);
wl_list_init(&xwm->compositor_destroy.link);
}
void wlr_xwayland_surface_activate(struct wlr_xwayland_surface *xsurface,
bool activated) {
struct wlr_xwayland_surface *focused = xsurface->xwm->focus_surface;
@ -1124,7 +1134,8 @@ void xwm_destroy(struct wlr_xwm *xwm) {
wl_list_for_each_safe(xsurface, tmp, &xwm->unpaired_surfaces, link) {
wlr_xwayland_surface_destroy(xsurface);
}
wl_list_remove(&xwm->compositor_surface_create.link);
wl_list_remove(&xwm->compositor_new_surface.link);
wl_list_remove(&xwm->compositor_destroy.link);
xcb_disconnect(xwm->xcb_conn);
free(xwm);
@ -1407,9 +1418,12 @@ struct wlr_xwm *xwm_create(struct wlr_xwayland *wlr_xwayland) {
xwm_selection_init(xwm);
xwm->compositor_surface_create.notify = handle_compositor_surface_create;
xwm->compositor_new_surface.notify = handle_compositor_new_surface;
wl_signal_add(&wlr_xwayland->compositor->events.new_surface,
&xwm->compositor_surface_create);
&xwm->compositor_new_surface);
xwm->compositor_destroy.notify = handle_compositor_destroy;
wl_signal_add(&wlr_xwayland->compositor->events.destroy,
&xwm->compositor_destroy);
xwm_create_wm_window(xwm);

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