modules/pam_selinux/pam_selinux.8


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.TH pam_selinux 8 2003/08/26 "Red Hat Linux" "System Administrator's Manual"
.SH NAME
pam_selinux \- set the default security context after login via PAM.
.SH SYNOPSIS
.B session optional /lib/security/pam_selinux.so
.br

.SH 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
'first' session entry and open as the 'last' session entry.  This way when pam 
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.

.SH ARGUMENTS
.IP close
Only execute the close_session portion of the module.
.IP debug
turns on debugging via \fBsyslog(3)\fR.
.IP multiple
tells pam_selinux.so to allow the user to select the security context they will
login with, if the user has more than one role.
.IP open
Only execute the open_session portion of the module.
.IP nottys
Do not try to setup the ttys security context.
.IP verbose
attempt to inform the user when security context is set.

.SH EXAMPLE
\fB/etc/pam.d/some-login-program\fP:
.br
auth required   /lib/security/pam_unix.so
.br
session required /lib/security/pam_permit.so
session optional /lib/security/pam_selinux.so
.br

.SH CAVEATS
Setting the following line will cause the login to fail
auth sufficient /lib/security/pam_selinux.so verbose


.SH SEE ALSO
pam_selinux_check(8)

.SH BUGS
Let's hope not, but if you find any, please email the author.  

.SH AUTHOR
Dan Walsh <dwalsh@redhat.com>