pam_securetty man page on Hurd

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PAM_SECURETTY(8)	       Linux-PAM Manual		      PAM_SECURETTY(8)

NAME
       pam_securetty - Limit root login to special devices

SYNOPSIS
       pam_securetty.so [debug]

DESCRIPTION
       pam_securetty is a PAM module that allows root logins only if the user
       is logging in on a "secure" tty, as defined by the listing in
       /etc/securetty. pam_securetty also checks to make sure that
       /etc/securetty is a plain file and not world writable.

       This module has no effect on non-root users and requires that the
       application fills in the PAM_TTY item correctly.

       For canonical usage, should be listed as a required authentication
       method before any sufficient authentication methods.

OPTIONS
       debug
	   Print debug information.

MODULE TYPES PROVIDED
       Only the auth module type is provided.

RETURN VALUES
       PAM_SUCCESS
	   The user is allowed to continue authentication. Either the user is
	   not root, or the root user is trying to log in on an acceptable
	   device.

       PAM_AUTH_ERR
	   Authentication is rejected. Either root is attempting to log in via
	   an unacceptable device, or the /etc/securetty file is world
	   writable or not a normal file.

       PAM_INCOMPLETE
	   An application error occurred. pam_securetty was not able to get
	   information it required from the application that called it.

       PAM_SERVICE_ERR
	   An error occurred while the module was determining the user's name
	   or tty, or the module could not open /etc/securetty.

       PAM_USER_UNKNOWN
	   The module could not find the user name in the /etc/passwd file to
	   verify whether the user had a UID of 0. Therefore, the results of
	   running this module are ignored.

EXAMPLES
	   auth	 required  pam_securetty.so
	   auth	 required  pam_unix.so

SEE ALSO
       securetty(5), pam.conf(5), pam.d(5), pam(7)

AUTHOR
       pam_securetty was written by Elliot Lee <sopwith@cuc.edu>.

Linux-PAM Manual		  06/04/2011		      PAM_SECURETTY(8)
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