pam_selinux(8) - phpMan

PAM_SELINUX(8) Linux-PAM Manual PAM_SELINUX(8)

NAME
pam_selinux - PAM module to set the default security context

SYNOPSIS
pam_selinux.so [close] [debug] [open] [nottys] [verbose] [select_context]
[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.

use_current_range
Use the sensitivity range of the process for the user context. This option and the
select_context option are mutually exclusive.

MODULE SERVICES PROVIDED
Only the session service is supported.

RETURN VALUES
PAM_AUTH_ERR
Unable to get or set a valid context.

PAM_SUCCESS
The security context was set successfull.

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