pam_selinux(8) -- Linux man page
NAMEpam_selinux - set the default security context after login via PAM.
SYNOPSISsession optional /lib/security/pam_selinux.so
DESCRIPTIONIn 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).
- 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.
- 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.
auth required /lib/security/pam_unix.so
session required /lib/security/pam_permit.so session optional /lib/security/pam_selinux.so
CAVEATSSetting the following line will cause the login to fail auth sufficient /lib/security/pam_selinux.so verbose
BUGSLet's hope not, but if you find any, please email the author.
AUTHORDan Walsh <email@example.com>