Mount a samba drive, with password from keychain

I have a problem with Jettison , that tries to remount a samba drive, that is protected by a password. It uses the following command line: /sbin/mount_smbfs //[user]@[server]/work /Volumes/work Of course it fails since the password is not present (nor the -N switch) I am aware that it should contain a password, but I do not want the app to know it. So my question is: Is there a way to request the password like this (I am aware this is not correct): /sbin/mount_smbfs //[user]: %keychain->[identified keychain]%@/work /Volumes/work