From c23d74447c7615dc74dae259f0fc3688ec988867 Mon Sep 17 00:00:00 2001
From: David Zeuthen <davidz@redhat.com>
Date: Fri, 01 Apr 2011 16:12:27 +0000
Subject: Use polkit_unix_process_get_uid() to get the owner of a process

This avoids a TOCTTOU problem.

Signed-off-by: David Zeuthen <davidz@redhat.com>
---
diff --git a/src/polkitbackend/polkitbackendsessionmonitor.c b/src/polkitbackend/polkitbackendsessionmonitor.c
index 495f752..9c331b6 100644
--- a/src/polkitbackend/polkitbackendsessionmonitor.c
+++ b/src/polkitbackend/polkitbackendsessionmonitor.c
@@ -293,14 +293,15 @@ polkit_backend_session_monitor_get_user_for_subject (PolkitBackendSessionMonitor
 
   if (POLKIT_IS_UNIX_PROCESS (subject))
     {
-      local_error = NULL;
-      uid = polkit_unix_process_get_owner (POLKIT_UNIX_PROCESS (subject), &local_error);
-      if (local_error != NULL)
+      uid = polkit_unix_process_get_uid (POLKIT_UNIX_PROCESS (subject));
+      if ((gint) uid == -1)
         {
-          g_propagate_prefixed_error (error, local_error, "Error getting user for process: ");
+          g_set_error (error,
+                       POLKIT_ERROR,
+                       POLKIT_ERROR_FAILED,
+                       "Unix process subject does not have uid set");
           goto out;
         }
-
       ret = polkit_unix_user_new (uid);
     }
   else if (POLKIT_IS_SYSTEM_BUS_NAME (subject))
--
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