NAME | SYNOPSIS | DESCRIPTION | OPTIONS | MODULE TYPES PROVIDED | RETURN VALUES | FILES | EXAMPLES | SEE ALSO | AUTHORS | COLOPHON

PAM_LIMITS(8)                 Linux-PAM Manual                 PAM_LIMITS(8)

NAME         top

       pam_limits - PAM module to limit resources

SYNOPSIS         top

       pam_limits.so [conf=/path/to/limits.conf] [debug] [set_all]
                     [utmp_early] [noaudit]

DESCRIPTION         top

       The pam_limits PAM module sets limits on the system resources that
       can be obtained in a user-session. Users of uid=0 are affected by
       this limits, too.

       By default limits are taken from the /etc/security/limits.conf config
       file. Then individual *.conf files from the /etc/security/limits.d/
       directory are read. The files are parsed one after another in the
       order of "C" locale. The effect of the individual files is the same
       as if all the files were concatenated together in the order of
       parsing. If a config file is explicitly specified with a module
       option then the files in the above directory are not parsed.

       The module must not be called by a multithreaded application.

       If Linux PAM is compiled with audit support the module will report
       when it denies access based on limit of maximum number of concurrent
       login sessions.

OPTIONS         top

       conf=/path/to/limits.conf
           Indicate an alternative limits.conf style configuration file to
           override the default.

       debug
           Print debug information.

       set_all
           Set the limits for which no value is specified in the
           configuration file to the one from the process with the PID 1.

       utmp_early
           Some broken applications actually allocate a utmp entry for the
           user before the user is admitted to the system. If some of the
           services you are configuring PAM for do this, you can selectively
           use this module argument to compensate for this behavior and at
           the same time maintain system-wide consistency with a single
           limits.conf file.

       noaudit
           Do not report exceeded maximum logins count to the audit
           subsystem.

MODULE TYPES PROVIDED         top

       Only the session module type is provided.

RETURN VALUES         top

       PAM_ABORT
           Cannot get current limits.

       PAM_IGNORE
           No limits found for this user.

       PAM_PERM_DENIED
           New limits could not be set.

       PAM_SERVICE_ERR
           Cannot read config file.

       PAM_SESSION_ERR
           Error recovering account name.

       PAM_SUCCESS
           Limits were changed.

       PAM_USER_UNKNOWN
           The user is not known to the system.

FILES         top

       /etc/security/limits.conf
           Default configuration file

EXAMPLES         top

       For the services you need resources limits (login for example) put a
       the following line in /etc/pam.d/login as the last line for that
       service (usually after the pam_unix session line):

           #%PAM-1.0
           #
           # Resource limits imposed on login sessions via pam_limits
           #
           session  required  pam_limits.so

       Replace "login" for each service you are using this module.

SEE ALSO         top

       limits.conf(5), pam.d(5), pam(8).

AUTHORS         top

       pam_limits was initially written by Cristian Gafton
       <gafton@redhat.com>

COLOPHON         top

       This page is part of the linux-pam (Pluggable Authentication Modules
       for Linux) project.  Information about the project can be found at 
       ⟨https://fedorahosted.org/linux-pam/⟩.  If you have a bug report for
       this manual page, see ⟨https://fedorahosted.org/linux-pam/report⟩.
       This page was obtained from the tarball Linux-PAM-1.3.0.tar.gz
       fetched from ⟨http://www.linux-pam.org/library/⟩ on 2017-03-13.  If
       you discover any rendering problems in this HTML version of the page,
       or you believe there is a better or more up-to-date source for the
       page, or you have corrections or improvements to the information in
       this COLOPHON (which is not part of the original manual page), send a
       mail to man-pages@man7.org

Linux-PAM Manual                 04/01/2016                    PAM_LIMITS(8)