sna: Prevent signal re-entrancy into cursor update routines

As we may need to allocate from within the cursor update, we are prone
to re-entrancy issues within malloc()/free(). To avoid these we need to
block SigIO (for pointer updates) whilst in the critical section.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/sna/sna.h b/src/sna/sna.h
index 00175828..3d0b1cfa 100644
--- a/src/sna/sna.h
+++ b/src/sna/sna.h
@@ -290,6 +290,7 @@ struct sna {
 
 		unsigned serial;
 		uint32_t fg, bg;
+		int size;
 
 		int last_x;
 		int last_y;