lockf tests: Fix a race

The test launches lockf(1) in the background and races with it, so it
shouldn't be using atf_check to check that lockf won the race.

MFC after: 1 week

lockf: allow locking file descriptors

This is most useful inside a shell script, allowing one to lock just
portions of a script rather than having to wrap the entire script in a
lock.

PR: 262738
R

lockf: allow locking file descriptors

This is most useful inside a shell script, allowing one to lock just
portions of a script rather than having to wrap the entire script in a
lock.

PR: 262738
Reviewed by: 0mp, allanjude (both previous versions)
Co-authored-by: Daniel O'Connor <darius@dons.net.au>
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D42718

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lockf: add some tests

Provide basic coverage for the existing options, nothing deeper (e.g.,
pipe closing behavior) is tested in this set.

Reviewed by: allanjude
Feedback from: des
Sponsored by: Kl

lockf: add some tests

Provide basic coverage for the existing options, nothing deeper (e.g.,
pipe closing behavior) is tested in this set.

Reviewed by: allanjude
Feedback from: des
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D42714

show more ...