This short document will explain the various pam_mount options.
Options are listed in the 4th column of a PAM file, e.g.:

	auth	optional	pam_mount.so	debug

Options are to be separated by whitespace, hence specifying more than
one is to look like:

	auth	optional	pam_mount.so	debug disable_interactive


enable_pam_password (default)
disable_pam_password
	Enable or disable asking the PAM system for a previously-entered
	password.

enable_interactive (default)
disable_interactive
	Enable or disable asking for a password interactively.

pam_mount will first try to get the password from PAM, if enabled,
otherwise interactively, if enabled.

enable_propagate_password (default)
disable_propagate_password
	Enable/disable propagation of the interactively-input password
	to PAM modules following in the stack.