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Description of problem:

Man setfacl states:

"""
       The  perms  field  is  a combination of characters that indicate the permissions: read (r), write (w), execute (x), execute only if the file is a directory or already has execute
       permission for some user (X).  Alternatively, the perms field can be an octal digit (0-7).
"""

This is missing the parameter for perms "-" which means "no permission allowed".

Thank you for reporting it!  I will submit a patch upstream to fix it...

fix proposed upstream:

http://lists.nongnu.org/archive/html/acl-devel/2016-05/msg00000.html

upstream commit:

http://git.savannah.gnu.org/cgit/acl.git/commit/?id=ea3c6bb7

Created attachment 1159380 [details]
[PATCH] setfacl.1: document the meaning of '-' in perms

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2485.html

acl-2.2.52-13.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2017-c71743bffc

acl-2.2.52-15.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-2028746562

acl-2.2.52-15.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.

acl-2.2.52-13.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.