D25169: [wayland] Fix sha check of filtered applications

[David Edmundson]

davidedmundson created this revision.
Herald added a project: KWin.
Herald added a subscriber: kwin.
davidedmundson requested review of this revision.

REVISION SUMMARY
  We have a sha check rather than just readlink as an app in a mount
  namespace could have an executable with the same path as an exectuable
  on the host system that we trust.
  
  This became overly complicated to solve an issue that didn't exist.
  sha(/proc/PID/exe) does resolve to what is currently running even if
  sha(readlink(/proc/PID/exe) does not as /proc is magic.
  
  This patch compares the root file system as kwin sees it to the running
  exe.
  
  See later comments on D22571 <https://phabricator.kde.org/D22571>

REPOSITORY
  R108 KWin

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D25169

AFFECTED FILES
  wayland_server.cpp

To: davidedmundson
Cc: kwin, LeGast00n, The-Feren-OS-Dev, sbergeron, jraleigh, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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