Re: tty heuristics in lib/readutmp.c exclude "web" sessions

[Bruno Haible]

Allison Karlitskaya wrote:
> I can confirm that with this patch, the output of `who` shows Cockpit
> again.  Specifically:
> 
>     admin    cockpit      2024-08-27 08:21 (::ffff:172.27.0.2)

Thanks, that's perfect. I'm committing the patch:


2024-08-27  Bruno Haible  <br...@clisp.org>

        readutmp: In systemd mode, show sessions of type "web".
        Reported by Allison Karlitskaya <allison.karlitsk...@redhat.com> in
        <https://lists.gnu.org/archive/html/bug-gnulib/2024-08/msg00160.html>.
        * lib/readutmp.c (read_utmp_from_systemd): For a systemd session of type
        "web", add a single USER_PROCESS entry.

diff --git a/lib/readutmp.c b/lib/readutmp.c
index 10d79d1d81..3c4f97b146 100644
--- a/lib/readutmp.c
+++ b/lib/readutmp.c
@@ -867,6 +867,14 @@ read_utmp_from_systemd (idx_t *n_entries, STRUCT_UTMP 
**utmp_buf, int options)
                       else if (pty != NULL)
                         tty = pty;
                     }
+                  else if (strcmp (type, "web") == 0)
+                    {
+                      char *service;
+                      if (sd_session_get_service (session, &service) < 0)
+                        service = NULL;
+
+                      tty = service;
+                    }
                 }
 
               /* Create up to two USER_PROCESS entries: one for the seat,