tree eed2d39829a5963916564b73be310ae4d4a867bd
parent d04f48c6a96d5d72b1b92b5769725898f898ed9c
author Wez <wez@fuchsia.infra.roller.google.com> 1779387122 -0700
committer Copybara-Service <copybara-worker@google.com> 1779393944 -0700

[roll] Roll fuchsia [starnix] Fix capability checks in futex and userfaultfd

Add missing CAP_SYS_PTRACE check to userfaultfd if called without
the UFFD_USER_MODE_ONLY flag.  This works even though Starnix only
implements user-mode-only fault FDs.

The get_robust_list() syscall, used to work with per-thread futex
lists, is fixed to perform the necessary ptrace access check on
the target task.

Original-Original-Bug: 470069208, 484334678, 515124946
Original-Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1619474
Original-Original-Revision: 8c41e051e42b7380dc11cd43d7cdd43ab9c2168f
GitOrigin-RevId: 1d391d1d1d9d2ab5c192b39106c0fe474c5bb7fd
Change-Id: Ia32dd307a985d8486955b90b28cc4c766ee3f632