PAM_SELINUX(8) Linux-PAM Manual PAM_SELINUX(8)NAMEpam_selinux - PAM module to set the default security context
SYNOPSIS
pam_selinux.so [close] [debug] [open] [nottys] [verbose]
[select_context] [env_params] [use_current_range]
DESCRIPTION
In a nutshell, pam_selinux sets up the default security context for the
next execed shell.
When an application opens a session using pam_selinux, the shell that
gets executed will be run in the default security context, or if the
user chooses and the pam file allows the selected security context.
Also the controlling tty will have it´s security context modified to
match the users.
Adding pam_selinux into a pam file could cause other pam modules to
change their behavior if the exec another application. The close and
open option help mitigate this problem. close option will only cause
the close portion of the pam_selinux to execute, and open will only
cause the open portion to run. You can add pam_selinux to the config
file twice. Add the pam_selinux close as the executes the open pass
through the modules, pam_selinux open_session will happen last. When
PAM executes the close pass through the modules pam_selinux
close_session will happen first.
OPTIONS
close
Only execute the close_session portion of the module.
debug
Turns on debugging via syslog(3).
open
Only execute the open_session portion of the module.
nottys
Do not try to setup the ttys security context.
verbose
attempt to inform the user when security context is set.
select_context
Attempt to ask the user for a custom security context role. If MLS
is on ask also for sensitivity level.
env_params
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_current_range
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
environment.
MODULE TYPES PROVIDED
Only the session module type is provided.
RETURN VALUES
PAM_AUTH_ERR
Unable to get or set a valid context.
PAM_SUCCESS
The security context was set successfully.
PAM_USER_UNKNOWN
The user is not known to the system.
EXAMPLES
auth required pam_unix.so
session required pam_permit.so
session optional pam_selinux.so
SEE ALSOpam.conf(5), pam.d(5), pam(7)AUTHORpam_selinux was written by Dan Walsh <dwalsh@redhat.com>.
Linux-PAM Manual 02/01/2010 PAM_SELINUX(8)
