internal-sftp atomic file operations?

[Paul Surgeon]

Hi

I've been testing internal-sftp with chroot on OpenSSH_5.3p1 and it
seems that internal-sftp does not support POSIX atomic rename()
operations.
Can someone confirm that this feature is only available in the
sftp-server and not internal-sftp?
Are there plans to include atomic file operations in internal-sftp?

Thanks