wlroots/include/backend/libinput.h

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#ifndef BACKEND_LIBINPUT_H
#define BACKEND_LIBINPUT_H
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#include <libinput.h>
#include <wayland-server-core.h>
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#include <wlr/backend/interface.h>
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#include <wlr/backend/libinput.h>
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#include <wlr/interfaces/wlr_input_device.h>
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#include <wlr/types/wlr_input_device.h>
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struct wlr_libinput_backend {
struct wlr_backend backend;
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struct wlr_session *session;
struct wl_display *display;
struct libinput *libinput_context;
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struct wl_event_source *input_event;
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struct wl_listener display_destroy;
backend/drm, backend/libinput: listen to session destroy This fixes a heap-use-after-free when the session is destroyed before the backend during wl_display_destroy: ==1085==ERROR: AddressSanitizer: heap-use-after-free on address 0x614000000180 at pc 0x7f88e3590c2d bp 0x7ffdc4e33f90 sp 0x7ffdc4e33f80 READ of size 8 at 0x614000000180 thread T0 #0 0x7f88e3590c2c in find_device ../subprojects/wlroots/backend/session/session.c:192 #1 0x7f88e3590e85 in wlr_session_close_file ../subprojects/wlroots/backend/session/session.c:204 #2 0x7f88e357b80c in libinput_close_restricted ../subprojects/wlroots/backend/libinput/backend.c:24 #3 0x7f88e21af274 (/lib64/libinput.so.10+0x28274) #4 0x7f88e21aff1d (/lib64/libinput.so.10+0x28f1d) #5 0x7f88e219ddac (/lib64/libinput.so.10+0x16dac) #6 0x7f88e21b415d in libinput_unref (/lib64/libinput.so.10+0x2d15d) #7 0x7f88e357c9d6 in backend_destroy ../subprojects/wlroots/backend/libinput/backend.c:130 #8 0x7f88e3545a09 in wlr_backend_destroy ../subprojects/wlroots/backend/backend.c:50 #9 0x7f88e358981a in multi_backend_destroy ../subprojects/wlroots/backend/multi/backend.c:54 #10 0x7f88e358a059 in handle_display_destroy ../subprojects/wlroots/backend/multi/backend.c:107 #11 0x7f88e314acde (/lib64/libwayland-server.so.0+0x8cde) #12 0x7f88e314b466 in wl_display_destroy (/lib64/libwayland-server.so.0+0x9466) #13 0x559fefb52385 in main ../main.c:67 #14 0x7f88e2639152 in __libc_start_main (/lib64/libc.so.6+0x27152) #15 0x559fefb4297d in _start (/home/simon/src/glider/build/glider+0x2297d) 0x614000000180 is located 320 bytes inside of 416-byte region [0x614000000040,0x6140000001e0) freed by thread T0 here: #0 0x7f88e3d0a6b0 in __interceptor_free /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:122 #1 0x7f88e35b51fb in logind_session_destroy ../subprojects/wlroots/backend/session/logind.c:270 #2 0x7f88e35905a4 in wlr_session_destroy ../subprojects/wlroots/backend/session/session.c:156 #3 0x7f88e358f440 in handle_display_destroy ../subprojects/wlroots/backend/session/session.c:65 #4 0x7f88e314acde (/lib64/libwayland-server.so.0+0x8cde) previously allocated by thread T0 here: #0 0x7f88e3d0acd8 in __interceptor_calloc /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:153 #1 0x7f88e35b911c in logind_session_create ../subprojects/wlroots/backend/session/logind.c:746 #2 0x7f88e358f6b4 in wlr_session_create ../subprojects/wlroots/backend/session/session.c:91 #3 0x559fefb51ea6 in main ../main.c:20 #4 0x7f88e2639152 in __libc_start_main (/lib64/libc.so.6+0x27152)
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struct wl_listener session_destroy;
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struct wl_listener session_signal;
struct wl_array wlr_device_lists; // struct wl_list *
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};
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struct wlr_libinput_input_device {
struct wlr_input_device wlr_input_device;
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struct libinput_device *handle;
};
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uint32_t usec_to_msec(uint64_t usec);
void handle_libinput_event(struct wlr_libinput_backend *state,
struct libinput_event *event);
struct wlr_input_device *get_appropriate_device(
enum wlr_input_device_type desired_type,
struct libinput_device *device);
struct wlr_keyboard *create_libinput_keyboard(
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struct libinput_device *device);
void handle_keyboard_key(struct libinput_event *event,
struct libinput_device *device);
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struct wlr_pointer *create_libinput_pointer(
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struct libinput_device *device);
void handle_pointer_motion(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_motion_abs(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_button(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_axis(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_swipe_begin(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_swipe_update(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_swipe_end(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_pinch_begin(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_pinch_update(struct libinput_event *event,
struct libinput_device *device);
void handle_pointer_pinch_end(struct libinput_event *event,
struct libinput_device *device);
struct wlr_switch *create_libinput_switch(
struct libinput_device *device);
void handle_switch_toggle(struct libinput_event *event,
struct libinput_device *device);
struct wlr_touch *create_libinput_touch(
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struct libinput_device *device);
void handle_touch_down(struct libinput_event *event,
struct libinput_device *device);
void handle_touch_up(struct libinput_event *event,
struct libinput_device *device);
void handle_touch_motion(struct libinput_event *event,
struct libinput_device *device);
void handle_touch_cancel(struct libinput_event *event,
struct libinput_device *device);
struct wlr_tablet *create_libinput_tablet(
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struct libinput_device *device);
void handle_tablet_tool_axis(struct libinput_event *event,
struct libinput_device *device);
void handle_tablet_tool_proximity(struct libinput_event *event,
struct libinput_device *device);
void handle_tablet_tool_tip(struct libinput_event *event,
struct libinput_device *device);
void handle_tablet_tool_button(struct libinput_event *event,
struct libinput_device *device);
struct wlr_tablet_pad *create_libinput_tablet_pad(
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struct libinput_device *device);
void handle_tablet_pad_button(struct libinput_event *event,
struct libinput_device *device);
void handle_tablet_pad_ring(struct libinput_event *event,
struct libinput_device *device);
void handle_tablet_pad_strip(struct libinput_event *event,
struct libinput_device *device);
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#endif