gui-wm/tinywl: new package

used for virtualwl.eclass

1 files changed, 55 insertions, 0 deletions

diff --git a/gui-wm/tinywl/files/tinywl-don-t-crash-when-there-is-no-keyboard.patch b/gui-wm/tinywl/files/tinywl-don-t-crash-when-there-is-no-keyboard.patch
new file mode 100644
index 0000000..cff1f72
--- /dev/null
+++ b/gui-wm/tinywl/files/tinywl-don-t-crash-when-there-is-no-keyboard.patch
@@ -0,0 +1,55 @@
+From 7d950f3dac6cca62635d5e4ff2af33b35372f6db Mon Sep 17 00:00:00 2001
+From: Simon Ser <contact@emersion.fr>
+Date: Sat, 19 Mar 2022 14:00:43 +0100
+Subject: [PATCH] tinywl: don't crash when there is no keyboard
+
+Running with WLR_BACKENDS=headless, there is no keyboard device.
+Avoid crashes like so:
+
+    ../tinywl/tinywl.c:136:2: runtime error: member access within null pointer of type 'struct wlr_keyboard'
+    ../tinywl/tinywl.c:136:2: runtime error: member access within null pointer of type 'struct wlr_keyboard'
+    AddressSanitizer:DEADLYSIGNAL
+    =================================================================
+    ==331107==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000120 (pc 0x556ed03e4e99 bp 0x7ffce834bc10 sp 0x7ffce834bbb0 T0)
+    ==331107==The signal is caused by a READ memory access.
+    ==331107==Hint: address points to the zero page.
+        #0 0x556ed03e4e99 in focus_view ../tinywl/tinywl.c:136
+        #1 0x556ed03eb3be in xdg_toplevel_map ../tinywl/tinywl.c:603
+        #2 0x7f75d6f768db in wlr_signal_emit_safe ../util/signal.c:29
+        #3 0x7f75d6e9cac7 in xdg_surface_role_commit ../types/xdg_shell/wlr_xdg_surface.c:315
+        #4 0x7f75d6eb6944 in surface_commit_state ../types/wlr_compositor.c:466
+        #5 0x7f75d6eb7b02 in surface_handle_commit ../types/wlr_compositor.c:523
+        #6 0x7f75d5714d49  (/usr/lib/libffi.so.8+0x6d49)
+        #7 0x7f75d5714266  (/usr/lib/libffi.so.8+0x6266)
+        #8 0x7f75d68cb322  (/usr/lib/libwayland-server.so.0+0xd322)
+        #9 0x7f75d68c65cb  (/usr/lib/libwayland-server.so.0+0x85cb)
+        #10 0x7f75d68c91c9 in wl_event_loop_dispatch (/usr/lib/libwayland-server.so.0+0xb1c9)
+        #11 0x7f75d68c6d36 in wl_display_run (/usr/lib/libwayland-server.so.0+0x8d36)
+        #12 0x556ed03eef55 in main ../tinywl/tinywl.c:905
+        #13 0x7f75d5d2330f in __libc_start_call_main (/usr/lib/libc.so.6+0x2d30f)
+        #14 0x7f75d5d233c0 in __libc_start_main@GLIBC_2.2.5 (/usr/lib/libc.so.6+0x2d3c0)
+        #15 0x556ed03e46e4 in _start (/home/simon/src/wlroots/build/tinywl/tinywl+0x136e4)
+---
+ tinywl/tinywl.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/tinywl/tinywl.c b/tinywl/tinywl.c
+index dd442aac..8796e9df 100644
+--- a/tinywl/tinywl.c
++++ b/tinywl/tinywl.c
+@@ -130,8 +130,10 @@ static void focus_view(struct tinywl_view *view, struct wlr_surface *surface) {
+ 	 * track of this and automatically send key events to the appropriate
+ 	 * clients without additional work on your part.
+ 	 */
+-	wlr_seat_keyboard_notify_enter(seat, view->xdg_surface->surface,
+-		keyboard->keycodes, keyboard->num_keycodes, &keyboard->modifiers);
++	if (keyboard != NULL) {
++		wlr_seat_keyboard_notify_enter(seat, view->xdg_surface->surface,
++			keyboard->keycodes, keyboard->num_keycodes, &keyboard->modifiers);
++	}
+ }
+ 
+ static void keyboard_handle_modifiers(
+-- 
+2.36.1
+