I'd like to continue the discussion of tlog integration, and also present you
the first release of tlog - a development preview, which has the configuration
interface necessary to implement the integration:
You're more than welcome to download RPMs, install, read tlog-rec(8) and
tlog-rec.conf(5), and experiment! Building from the Git tree and the tarball
works as well, if you're so inclined. I'm also attaching those manpages for
Here are the integration plans so far, as discussed with Jakub on our
devconf.cz trip meetings and before on the list. Jakub, please correct me or
* We follow the route similar to that taken by SELinux rule control
implementation . I.e. store the configuration in LDAP HBAC rules,
write to files on the client side and then specify them to tlog upon user
However, I'm also rather fond of the idea of specifying the whole
configuration through an environment variable instead of through a file
referenced by an environment variable - it's not big at all, and we'll avoid
the hassle of managing the files.
I implemented support for both in tlog (was easy).
* We'll have to make nss_sss report user's shell as tlog-rec (how?) and
specify the actual shell to tlog-rec via an environment variable, through
pam_sss (with SSS_PAM_ENV_ITEM messages). I.e.:
* Nss_sss would always report tlog-rec as the user's shell.
* During login (e.g. through "login" or "sshd") pam_sss would add a
to the user environment, containing, or pointing at, a tlog-rec
configuration (TLOG_REC_CONF_TEXT or TLOG_REC_CONF_FILE). That
configuration would contain the user's actual shell. I can also implement
support for a separate variable just for the shell (TLOG_REC_SHELL?) to
simplify the implementation for the start.
* Tlog-rec would read the system-wide configuration and overlay it with the
one specified in the environment, adding the specific user shell, and then
would spawn it.
Please also see the draft integration design page  for reference.
I hope to refine and extend it in the coming weeks to match FreeIPA standards.
Please chime in and suggest, object, discuss!
Also, please report tlog bugs at https://github.com/spbnick/tlog/issues