From b9ceb13058d55c560bd3350291fcd4167d71e698 Mon Sep 17 00:00:00 2001
From: David Fort <contact@hardening-consulting.com>
Date: Wed, 5 Dec 2018 15:21:00 +0100
Subject: [PATCH] uwac: handle wl_seat with version >= 7

Starting at version 7, the wayland client is supposed to mmap the keymap as MAP_PRIVATE
to prevent accidental or intentional modifications.
---
 uwac/libuwac/uwac-input.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/uwac/libuwac/uwac-input.c b/uwac/libuwac/uwac-input.c
index ecb3b1a6c..16edb4b9b 100644
--- a/uwac/libuwac/uwac-input.c
+++ b/uwac/libuwac/uwac-input.c
@@ -66,6 +66,7 @@ static void keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
 	struct xkb_keymap *keymap;
 	struct xkb_state *state;
 	char *map_str;
+	int mapFlags = MAP_SHARED;
 
 	if (!data) {
 		close(fd);
@@ -77,7 +78,10 @@ static void keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
 		return;
 	}
 
-	map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
+	if (input->seat_version >= 7)
+		mapFlags = MAP_PRIVATE;
+
+	map_str = mmap(NULL, size, PROT_READ, mapFlags, fd, 0);
 	if (map_str == MAP_FAILED) {
 		close(fd);
 		return;