[Wayland-bugs] [Bug 98894] Add an API for taking screenshots and recording screencasts

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Feb 21 14:23:21 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=98894

--- Comment #3 from James Henstridge <james at jamesh.id.au> ---
> Afaik, applications can't lie about /proc/[pid]/exe and the compositor could
> use .desktop files from /usr/share/applications for identification (with both
> name and icon).

It is pretty easy to spoof the result of readlink() on /proc/[pid]/exe though. 
With user and mount namespaces, a regular user could bind mount a different
executable over a trusted one before executing it.

This could be detected by comparing stat() information, but that would also
give false positives when upgrading a running application.

There's not an obvious generic solution.

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