[hurd] 20/70: tmpfs: drop privileges in the tmpfs translator

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit 7075bc11289355478659cd1610632a9299734afc
Author: Justus Winter <address@hidden>
Date:   Sat Jul 27 15:32:05 2013 +0200

    tmpfs: drop privileges in the tmpfs translator
    
    * tmpfs/tmpfs.c (main): Drop privileges.
---
 tmpfs/tmpfs.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tmpfs/tmpfs.c b/tmpfs/tmpfs.c
index 7da3dd5..1872a7d 100644
--- a/tmpfs/tmpfs.c
+++ b/tmpfs/tmpfs.c
@@ -29,6 +29,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 
02139, USA.  */
 #include <fcntl.h>
 #include <hurd.h>
 #include <hurd/paths.h>
+#include <nullauth.h>
 
 char *diskfs_server_name = "tmpfs";
 char *diskfs_server_version = HURD_VERSION;
@@ -437,6 +438,11 @@ main (int argc, char **argv)
   /* We must keep the REALNODE send right to remain the active
      translator for the underlying node.  */
 
+  /* Drop all privileges.  */
+  err = setnullauth();
+  if (err)
+    error (1, err, "Could not drop privileges");
+
   pthread_mutex_unlock (&diskfs_root_node->lock);
 
   /* and so we die, leaving others to do the real work.  */

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