pam_selinux - PAM module to set the default security context
pam_selinux.so [close] [debug] [open] [nottys] [verbose]
[select_context] [env_params] [use_current_range]
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.
Only execute the close_session portion of the module.
Turns on debugging via syslog(3).
Only execute the open_session portion of the module.
Do not try to setup the ttys security context.
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
MODULE TYPES PROVIDED
Only the session module type is provided.
Unable to get or set a valid context.
The security context was set successfully.
The user is not known to the system.
auth required pam_unix.so
session required pam_permit.so
session optional pam_selinux.so
pam.conf(5), pam.d(5), pam(7)
pam_selinux was written by Dan Walsh <email@example.com>.