[scponly] why is it necessary to use sftplogging patch for umask?

[Steven Sweet]

Hi,

I looked through the archived messages and found the info about patching 
the sftp-server with the sftplogging patch at sourceforge.   I'm a bit 
confused by that though because it seems to be the scponly "shell" that 
causes the problem.

If I set up a user with login shell of /bin/bash and set the umask as 
002 in their .bashrc, the files are created by sftp with the correct 
permissions.  Its not until I change their login shell to 
/usr/local/bin/scponly that their umask is not applied.

If the stock sftp-server component can correctly set the umask by 
itself, why is that the piece that needs to be patched for scponly to be 
able to set the umask?

Thanks.