diff /sys/src/cmd/rio/data.c ./data.c
174a175,193
> Image*
> wallpaper()
> {
> 	char* home = getenv("home");
> 	char* wallpath = "/lib/wallpaper";
> 	char* fullpath = malloc(sizeof(char) * (strlen(home) + strlen(wallpath) + 1));
> 	strcpy(fullpath, home);
> 	strcat(fullpath, wallpath);
> 	int fp = open(fullpath, OREAD);
> 	if (fp != -1){
> 		Image* wall = readimage(display, fp, 0);
> 		if (wall != 0){
> 			return wall;
> 		}
> 	}
> 
> 	return allocimage(display, Rect(0,0,1,1), RGB24, 1, 0x777777FF);
> }
> 
178c197
< 	background = allocimage(display, Rect(0,0,1,1), RGB24, 1, 0x777777FF);
---
> 	background = wallpaper();
diff /sys/src/cmd/rio/fns.h ./fns.h
5a6
> Image* wallpaper(void);