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PAM_WHEEL(8)		  BSD System Manager's Manual		  PAM_WHEEL(8)

     pam_wheel -- Wheel	PAM module

     [service-name] module-type	control-flag pam_wheel [options]

     The Wheel authentication service module for PAM, pam_wheel	provides func-
     tionality for only	one PAM	category: authentication.  In terms of the
     module-type parameter, this is the	"auth" feature.	 It also provides a
     null function for session management.

   Wheel Authentication	Module
     The Wheel authentication component	(pam_sm_authenticate()), permit	au-
     thentication to members of	a group, which defaults	to "wheel".

     The following options may be passed to the	authentication module:

     debug	      syslog(3)	debugging information at LOG_DEBUG level.

     no_warn	      suppress warning messages	to the user.  These messages
		      include reasons why the user's authentication attempt
		      was declined.

     auth_as_self     check for	"wheel"	membership against the current login
		      name (given by getlogin(2)).

     trust	      return PAM_SUCCESS instead of PAM_IGNORE if the user is
		      a	member of the group (default is	"wheel").

     deny	      invert the operation if the user is a member of the (de-
		      fault "wheel") group.  Returns failure instead of	suc-
		      cess.  Mainly of use with	the group=foo option.

     group=foo	      checking for membership of group foo instead of the de-
		      fault group "wheel".

     noroot_ok	      return PAM_SUCCESS instead of PAM_IGNORE if the user is
		      authenticating to	a user that is not the superuser.

     exempt_if_empty  return PAM_IGNORE	if the specified group (default	group
		      of "wheel") is empty, providing traditional BSD su(8)
		      semantics	permitting any user to "su" if the wheel group
		      is empty.

     getlogin(2), syslog(3), group(5), pam.conf(5), pam(8)

BSD				 July 8, 2001				   BSD


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