pam_selinux - PAM module to set the default security context
[open] [close] [restore] [nottys] [debug] [verbose] [select_context]
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
call, the file security context for the controlling terminal, and the security
context used for creating a new kernel keyring.
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.so open
should be placed after such modules in the PAM stack, and pam_selinux.so
should be placed before them. When such a placement is not feasible,
could be used to temporary restore original
Only execute the open_session part of the
Only execute the close_session part of the
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
Turn on debug messages via
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
Only the session
module type is provided.
The security context was set
Unable to get or set a valid context.
The user is not known to the system.
Memory allocation error.
auth required pam_unix.so
session required pam_permit.so
session optional pam_selinux.so
pam_selinux was written by Dan Walsh <firstname.lastname@example.org>.