From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Thu, 1 Jun 2017 02:10:15 +0000 (-0400)
Subject: logind: nicer error message when we cannot guess the caller's session
X-Git-Tag: chiark/234.4-1+devuan1.1+iwj1~113
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=d7808ce8dab201703e85b7eee3f21ec65a14537f

logind: nicer error message when we cannot guess the caller's session

Partial fix for #6032.
---

diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index f22859c74..70d2b1ffc 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -69,6 +69,9 @@ int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const ch
                         return r;
 
                 r = sd_bus_creds_get_session(creds, &name);
+                if (r == -ENXIO)
+                        return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
+                                                 "Caller does not belong to any known session");
                 if (r < 0)
                         return r;
         }