Possible problem with ACL masks and getfacl

Hi all,

I'm not sure if this is a real problem or not, but if I set a group
ACL on a file, and then set a mask, when running getfacl the group names
are not listed.

I'm running 5.1 RELEASE.

The following sequence commands show the problem (I create a file, display
the ACL, set a group ACL, display the ACL, set a mask, and then display
the ACL again. The problem is with the final display - the group name is
not displayed).


# touch testfile
# getfacl testfile
#file:testfile
#owner:0
#group:0
user::rw-
group::r--
other::r--
# setfacl -m g:staff:rwx testfile
# getfacl testfile
#file:testfile
#owner:0
#group:0
user::rw-
group::r--
group:staff:rwx
mask::rwx
other::r--
# setfacl -m m::rx testfile
# getfacl testfile
#file:testfile
#owner:0
#group:0
user::rw-
group::r--
group::rwx              # effective: r-x
mask::r-x
other::r--


Attached is a proposed patch to lib/libc/posix1e/acl_to_text.c to correct
this problem. Please note that this patch has not been tested as the
computer I'm testing on won't build world :( (cheap computer with cheap
components). The source used is actually CURRENT as of Tuesday July
22nd.

I admit that there may be a reason why the user name is not shown
which I don't know about :).

Feedback is greatly appreciated.

Glen Gibb