[Bug 7109] Need to define NO_SYMLINK_XATTRS on Linux

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=7109

Matt McCutchen <matt at mattmccutchen.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WONTFIX                     |

--- Comment #4 from Matt McCutchen <matt at mattmccutchen.net> 2011-06-05 00:48:12 UTC ---
(In reply to comment #3)
> Since the read function doesn't generate an error, it shouod be fine to just
> let any attempt to set user xattrs on a symlink generate an error.  Is there
> anything I'm missing?

Yes: bug 7110.  NO_SYMLINK_XATTRS is needed to trigger the code path that
converts the symlink to a regular file to be able to set the fake-super xattr. 
Without it, rsync will try to set the xattr on the symlink, generating an EPERM
which is swallowed by a test you apparently wrote to allow fake-super to work
on a best-effort basis before the introduction of the NO_SYMLINK_XATTRS switch.

So, you can either detect the EPERM and convert the symlink to a regular file
then, or have a separate NO_SYMLINK_USER_XATTRS switch.  But either way, the
EPERM test should go now that it is masking a failure that rsync is supposed to
be able to avoid.

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