Ethan Benson discovered a problem in xfsdump, that contains administrative
utilities for the XFS filesystem. When filesystem quotas are enabled
xfsdump runs xfsdq to save the quota information into a file at the root of
the filesystem being dumped. The manner in which this file is created is
unsafe.
While fixing this, a new option ``-f path'' has been added to xfsdq(8) to
specify an output file instead of using the standard output stream. This
file is created by xfsdq and xfsdq will fail to run if it exists already.
The file is also created with a more appropriate mode than whatever the
umask happened to be when xfsdump(8) was run.
