How does linux-xfs list extended attributes by namespace?

[Craig Rodrigues <rodrigc@xxxxxxxxxxxxxx>]

Hi,

I am helping with the port of XFS to FreeBSD, based on
the Linux-XFS codebase.

Can someone explain to me how listing of extended attributes works?

If I understand things correctly, on Linux, the call path is:

linvfs_listxattr()  
 ->  attr_generic_list() 
  -> XVOP_ATTR_LIST() (which is xfs_attr_list() )
  -> attr_system_list()
  -> attr_generic_listadd()


My question is, how does the existing system call
list extended attributes by attribute namespace?
XVOP_ATTR_LIST() doesn't take in any parameters which would
indicate that it could list attributes in a specific attribute namespace.
Does it list all the EA for a file?

Thanks.
 
-- 
Craig Rodrigues        
rodrigc@xxxxxxxxxxxxxx