[Differential] [Request, 12 lines] D2003: Install a signal handler for SIGABRT and SIGSEGV for kwin_wayland

[graesslin (Martin Gräßlin)]

graesslin created this revision.
graesslin added reviewers: Plasma on Wayland, KWin, bshah.
Restricted Application added subscribers: kwin, plasma-devel.
Restricted Application added projects: Plasma on Wayland, KWin.

REVISION SUMMARY
  kwin_wayland disables ptrace on itself. This has the side effect of
  core dumps no longer be created - which we want as DrKonqi doesn't
  work for kwin_wayland.
  
  This change introduces a dedicated signal handler for abort and
  segfault. The signal handler enables ptrace again, unsets itself as
  signal handler and raises the signal again, so that the proper crash,
  abort handling can be performed.

TEST PLAN
  Added a crash, added an abort and verified that coredumpctl
  shows the expected coredump.

REPOSITORY
  rKWIN KWin

BRANCH
  signal-handler-crash

REVISION DETAIL
  https://phabricator.kde.org/D2003

AFFECTED FILES
  main_wayland.cpp

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: graesslin, #plasma_on_wayland, #kwin, bshah
Cc: plasma-devel, kwin, hardening, jensreuterberg, sebas
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