Files
mirror_zfs/module
Tim Chase 356d9ed4c8 Don't perform ACL-to-mode translation on empty ACL
In zfs_acl_chown_setattr(), the zfs_mode_comput() function is used to
create a traditional mode value based on an ACL.  If no ACL exists, this
processing shouldn't be done.  Problems caused by this were most evident
on version 4 filesystems which not only don't have system attributes,
and also frequently have empty ACLs. On such filesystems, performing a
chown() operation could have the effect of dirtying the mode bits in
memory but not on the file system as follows:

	# create a file with typical mode of 664
	echo test > test
	chown anyuser test
	ls -l test

and the mode will show up as all zeroes.  Unmounting/mounting and/or
exporting/importing the filesystem will reveal the proper mode again.

Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1264
2014-10-21 09:23:27 -07:00
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