# pam_rootok - Gain only root access - man(8) - [phpMan]

[_PAM_ROOTOK_(8)](https://www.chedong.com/phpMan.php/man/PAMROOTOK/8/markdown)                             Linux-PAM Manual                             [_PAM_ROOTOK_(8)](https://www.chedong.com/phpMan.php/man/PAMROOTOK/8/markdown)

## NAME
       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
       The **auth**, **account **and **password **module types are 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)](https://www.chedong.com/phpMan.php/man/su/1/markdown) 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 /etc/pam.d/su
       configuration file:

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



## SEE ALSO
       [**su**(1)](https://www.chedong.com/phpMan.php/man/su/1/markdown), [**pam.conf**(5)](https://www.chedong.com/phpMan.php/man/pam.conf/5/markdown), [**pam.d**(5)](https://www.chedong.com/phpMan.php/man/pam.d/5/markdown), [**pam**(7)](https://www.chedong.com/phpMan.php/man/pam/7/markdown)

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

Linux-PAM                                    05/07/2023                                [_PAM_ROOTOK_(8)](https://www.chedong.com/phpMan.php/man/PAMROOTOK/8/markdown)