Sponsored by:	Klara, Inc.
Sponsored by:	NetApp, Inc.
Reviewed by:	markj
Differential Revision:	https://reviews.freebsd.org/D53443

This UFS-only test verifies that attempting to create more links than
permitted by the file system returns EMLINK, but has been broken ever
since UFS_LINK_MAX was increased because a) it hardcodes the previous
value of UFS_LINK_MAX, and b) the new value requires more space than
the test allocates, so it ends up getting ENOSPC instead of EMLINK.

* Switch to retrieving {PC_LINK_MAX} at runtime.

* Stop the test when we reach {PC_LINK_MAX} links.  This ensures that
  we don't go on for hours if the actual limit turns out to be much
  higher than we anticipated (e.g. INT64_MAX on ZFS).

* Double the size of the test filesystem.

MFC after:	3 days
Sponsored by:	Klara, Inc.
Sponsored by:	NetApp, Inc.
Fixes:		35a301555bff ("Increase UFS/FFS maximum link count from 32767 to 65530.")
Reviewed by:	markj
Differential Revision:	https://reviews.freebsd.org/D53442

Sponsored by:		Netflix

The summary of changes is as follows..

Generic changes::
- Added configure support [2].
- Check for lchmod filesystem support with create_file(..); for
  testcases that require lchmod, skip the testcase -- otherwise
  use chmod directly [1].
- Added Travis CI integration [2].
- Added utimensat testcases [1].

Linux support::
- Fixed Linux support to pass on later supported versions of
  Fedora/Ubuntu [2].
- Conditionally enable posix_fallocate(2) support [2].

OSX support::
- Fixed compilation on OSX [2].
- Added partial OSX support (the test run isn't fully green yet)
  [2].

MFC after:	2 months
Obtained from:	https://github.com/pjd/pjdfstest/tree/0.1
Relnotes:	yes
Submitted by:	asomers [1], ngie [2]
Tested with:	UFS, ZFS

ftruncate/11, open/20, and truncate/11 copy sleep(1) to a temporary file on the
target filesystem, execute the binary, then expect a result. This doesn't work
with scenarios where the target binary cannot be executed, e.g. the filesystem
was mounted with -o noexec.

Ensure the filesystem hasn't been mounted with -o noexec for the testcases
before executing them.

Differential Revision: https://reviews.freebsd.org/D5622
MFC after: 1 week
Reviewed by: markj
Sponsored by: EMC / Isilon Storage Division

sure the process has been started beforehand with pgrep

pkill the process afterwards to make sure it's dead when the unlink is run
(not strictly required, but I was being conservative)

MFC after: 1 week
Reviewed by: Darius O'Conner, mjohnston
Sponsored by: EMC / Isilon Storage Division

failures, which would cause cascade failures in the rest of the test
run:

link/15.t, open/19.t, mkdir/11.t, mkfifo/11.t, symlink/11.t

Fail quickly in all of the testcases if mdconfig, mount, umount, etc
fails to avoid issues similar to this in the future

Submitted by: Casey Peel <cpeel@isilon.com>
MFC after: 2 weeks
X-MFC with: r272057
Sponsored by: EMC / Isilon Storage Division

MFC after: 2 weeks
X-MFC with: r272057
Sponsored by: EMC / Isilon Storage Division

symbolic link" case. Assume EMLINK on the rest of the OSes (FreeBSD, Solaris,
etc)

MFC after: 2 weeks
X-MFC with: r272057
Sponsored by: EMC / Isilon Storage Division

- Remove tools/regression/pjdfstest
- Add upgrade directions for contrib/pjdfstest
- Add a note to UPDATING for the move (the reachover Makefiles are coming
  soon)

Functional differences:
- ftruncate testcases are added from upstream (github)

Non-functional differences:
- The copyright for the project has been updated to 2012
- pjd's contact information has been updated

Discussed with: -testing, jmmv, pjd
MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division