pam_selinux is a PAM module that sets up the default SELinux security
context for the next executed process.
When a new session is started, the open_session part of the module
computes and sets up the execution security context used for the next
execve(2) call, the file security context for the controlling
terminal, and the security context used for creating a new kernel
When the session is ended, the close_session part of the module
restores old security contexts that were in effect before the change
made by the open_session part of the module.
Adding pam_selinux into the PAM stack might disrupt behavior of other
PAM modules which execute applications. To avoid that, pam_selinux.soopen should be placed after such modules in the PAM stack, and
pam_selinux.so close should be placed before them. When such a
placement is not feasible, pam_selinux.so restore could be used to
temporary restore original security contexts.
Only execute the open_session part of the module.
Only execute the close_session part of the module.
In open_session part of the module, temporarily restore the
security contexts as they were before the previous call of the
module. Another call of this module without the restore option
will set up the new security contexts again.
Do not setup security context of the controlling terminal.
Turn on debug messages via syslog(3).
Attempt to inform the user when security context is set.
Attempt to ask the user for a custom security context role. If
MLS is on, ask also for sensitivity level.
Attempt to obtain a custom security context role from PAM
environment. If MLS is on, obtain also sensitivity level. This
option and the select_context option are mutually exclusive. The
respective PAM environment variables are SELINUX_ROLE_REQUESTED,
SELINUX_LEVEL_REQUESTED, and SELINUX_USE_CURRENT_RANGE. The first
two variables are self describing and the last one if set to 1
makes the PAM module behave as if the use_current_range was
specified on the command line of the module.
Use the sensitivity level of the current process for the user
context instead of the default level. Also suppresses asking of
the sensitivity level from the user or obtaining it from PAM
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 email@example.com
Linux-PAM Manual 04/01/2016 PAM_SELINUX(8)