Import Illumos #742: Resurrect the ZFS "aclmode" property

[ryao]

We might want to import illumos/illumos-gate@a3c49ce. It reintroduces an old feature.

https://www.illumos.org/issues/742

[behlendorf]

Indeed, although before porting this we're going to have to see how it fits in with the ACL issues under Linux.

[kernelOfTruth]

Just saw it from the change in #4159 that

the snippet

    /*
     * Property to be removed once libbe is integrated
     */
    zprop_register_hidden(ZFS_PROP_PRIVATE, "priv_prop",
        PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_FILESYSTEM,
        "PRIV_PROP");

to be removed by this change in module/zcommon/zfs_prop.c

is still there and found this issue entry

@behlendorf is the commit illumos/illumos-gate@a3c49ce still needed or what is the status in relation to ACL ?

I'm asking since if I remember correctly it didn't show up in the illumos wiki list

[kernelOfTruth]

referencing: #340 Suggestion for patch import from the Illumos project

[behlendorf]

@kernelOfTruth the way ACLs needed to be implemented for Linux that feature doesn't really apply. I've marked it as such on the wiki. I'll close this issue out since it not something anyone is planning to do.