[Bug 212861] [tmpfs] uchg files can be removed by root

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212861

--- Comment #8 from commit-hook at freebsd.org ---
A commit references this bug:

Author: ngie
Date: Fri Feb 10 02:51:54 UTC 2017
New revision: 313514
URL: https://svnweb.freebsd.org/changeset/base/313514

Log:
  MFC r307190,r307196,r307204,r307205:

  r307190:

  Skip :uchg on FreeBSD

  Unfortunately removing files with uchg set always succeeds with root on
  FreeBSD. Unfortunately running the test as an unprivileged user isn't doable
  because mounting tmpfs requires root

  PR:           212861

  r307196:

  Port contrib/netbsd-tests/fs/tmpfs/h_tools.c to FreeBSD

  - Add inttypes.h #include for PRId64 macro
  - Use FreeBSD's copy of getfh(2), which doesn't include a `fh_size`
parameter.
    Use sizeof(fhandle_t) instead as the size of fhp is always fixed as
    fhandle_t, unlike NetBSD's copy of fhp, which is void*.

  r307204:

  Expect :large to fail on FreeBSD

  FreeBSD doesn't appear to validate large -o size values like
  NetBSD does

  PR:           212862

  r307205:

  Change atf_skip call to atf_expect_fail to make it clear that a failure is
  expected

  PR:           212861
  Suggested by: jmmv

Changes:
_U  stable/10/
  stable/10/contrib/netbsd-tests/fs/tmpfs/h_tools.c
  stable/10/contrib/netbsd-tests/fs/tmpfs/t_mount.sh
  stable/10/contrib/netbsd-tests/fs/tmpfs/t_remove.sh

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