pam_limits8Linux-PAM Manualpam_limits
PAM module to limit resources
pam_limits.so
change_uid
conf=/path/to/limits.conf
debug
utmp_early
DESCRIPTION
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 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 explicitely 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.
OPTIONS
Change real uid to the user for who the limits are set up. Use this
option if you have problems like login not forking a shell for user
who has no processes. Be warned that something else may break when
you do this.
Indicate an alternative limits.conf style configuration file to
override the default.
Print debug information.
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.
MODULE SERVICES PROVIDED
Only the service is supported.
RETURN VALUESPAM_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_SESSEION_ERR
Error recovering account name.
PAM_SUCCESS
Limits were changed.
PAM_USER_UNKNOWN
The user is not known to the system.
FILES/etc/security/limits.confDefault configuration fileEXAMPLES
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 ALSOlimits.conf5,
pam.d8,
pam8.
AUTHORS
pam_limits was initially written by Cristian Gafton <gafton@redhat.com>