pam_selinux


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.
           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 ALSO
       pam.conf(5), pam.d(5), pam(7)

AUTHOR
       pam_selinux was written by Dan Walsh <dwalsh@redhat.com>.



Linux-PAM Manual                  08/31/2010                    PAM_SELINUX(8)
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