[PATCH v3 0/3] fix failures caused by mount error msg change in util-linux v2.30

[Eryu Guan <eguan@redhat.com>]

util-linux v2.30 changed mount error message again and caused several
tests to fail (reported by Misono Tomohiro, thanks!), this is mainly due
to two util-linux commits in v2.30-rc1

6dede2f2f7c5 libmount: support MS_RDONLY on write-protected devices
ea848180dd34 libmount: add mnt_context_get_excode()

This patchset introduced _filter_ending_dot, _filter_error_mount and
_filter_busy_mount and improved _filter_ro_mount to deal with all these
output differences between old and new util-linux versions.

I've tested and confirmed generic/050, xfs/005 and overlay/03[567] all
passed with both old and new util-linux. xfs/333 is always _notrun
because there's no realtime-rmapbt support yet.

Thanks,
Eryu

v3:
- address Amir's review comments, detailed change log goes to each patch
v2:
- remove not-needed _filter_scratch from tests

Eryu Guan (3):
  fstests: filter mount error message for EUCLEAN and ESTALE
  overlay/036: filter busy mount message
  fstests: filter readonly mount error messages

 common/filter         | 86 +++++++++++++++++++++++++++++++++++++++++++++++++--
 tests/generic/050     |  8 ++---
 tests/generic/050.out |  8 ++---
 tests/overlay/035     |  4 +--
 tests/overlay/035.out |  4 +--
 tests/overlay/036     |  4 +--
 tests/overlay/036.out |  4 +--
 tests/overlay/037     |  4 +--
 tests/overlay/037.out |  4 +--
 tests/xfs/005         |  7 +----
 tests/xfs/333         |  2 +-
 tests/xfs/333.out     |  2 +-
 12 files changed, 107 insertions(+), 30 deletions(-)

-- 
2.14.3