PAM_ROOTOK

Section: Linux\-PAM Manual (8)
Updated: 03/02/2009
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pam_rootok - Gain only root access  

Synopsis

pam_rootok.so [debug]
 

DESCRIPTION

pam_rootok is a PAM module that authenticates the user if their UID is 0. Applications that are created setuid-root generally retain the UID of the user but run with the authority of an enhanced effective-UID. It is the real UID that is checked.  

OPTIONS

debug

Print debug information.
 

MODULE TYPES PROVIDED

Only the auth type is provided.  

RETURN VALUES

PAM_SUCCESS

The UID is 0.

PAM_AUTH_ERR

The UID is not 0.
 

EXAMPLES

In the case of the su(1) application the historical usage is to permit the superuser to adopt the identity of a lesser user without the use of a password. To obtain this behavior with PAM the following pair of lines are needed for the corresponding entry in the FC/etc/pam.d/suF[] configuration file: 



# su authentication. Root is granted access by default.
auth  sufficient   pam_rootok.so
auth  required     pam_unix.so

 

SEE ALSO

su(1), pam.conf(5), pam.d(5), pam(8)  

AUTHOR

pam_rootok was written by Andrew G. Morgan, <morgan@kernel.org>.