[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: extended attributes and lsextattr/extattr_list_file
On Wed, Jun 29, 2011 at 09:31:33AM +0000, Emmanuel Dreyfus wrote:
> The conversion is easy to do, but the right place to do it is tricky.
> VOP_LISTEXTATTR() writes its output to the userland buffer, therefore if
> I convert in src/sys/ufs/ufs/ufs_extattr.c, I have to copyin/convert/copyout,
> and that does not looks good perfromance-wise.
That would be trully horrid - rather reminds me of the stackgap ...
> Converting in libc is another option,
Does libc need to use its own buffer - or would that force it to allocate
a temporary buffer?
I've NFI how this data is used.
> and we can also add a flavor flag to
> VOP_LISTEXTATTR so that we can require the filesystem to output the data
> in the appropriate format.
That seems more appropriate.
David Laight: david%l8s.co.uk@localhost
Main Index |
Thread Index |