Hi, On Thursday, November 1, 2018 6:25 PM, Ted Unangst <[email protected]> wrote: > Simon Ser wrote: > > > Hi all> I'd like to know if there are plans to add a feature similar to file > > sealing [2] in OpenBSD. > > I don't think so. You explained a possible use, but didn't actually explain if > code using file sealing already exists.
Thanks for your reply. Indeed, code using file sealing exists, for instance GTK+ [1] and GLFW [2]. I've been told that for this same use-case, another mechanism has already been implemented on OpenBSD. It's an additional parameter that can be passed to mmap and makes truncated regions appear as zeros instead of triggering SIGBUS. However I couldn't find any more info about this. Can you tell me more about this? Thanks, Simon Ser [1]: https://gitlab.gnome.org/GNOME/gtk/blob/master/gdk/wayland/gdkdisplay-wayland.c#L1223 [2]: https://github.com/glfw/glfw/blob/master/src/wl_window.c#L156
