1 files changed, 55 insertions, 0 deletions
diff --git a/libdiskfs/io-restrict-auth.c b/libdiskfs/io-restrict-auth.c
new file mode 100644
index 00000000..011aa19e
--- /dev/null
+++ b/libdiskfs/io-restrict-auth.c
@@ -0,0 +1,55 @@
+/*
+   Copyright (C) 1994,95,96,2001, 2002 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+#include "io_S.h"
+
+
+/* Implement io_restrict_auth as described in <hurd/io.defs>. */
+kern_return_t
+diskfs_S_io_restrict_auth (struct protid *cred,
+			   mach_port_t *newport,
+			   mach_msg_type_name_t *newportpoly,
+			   uid_t *uids,
+			   size_t nuids,
+			   gid_t *gids,
+			   size_t ngids)
+{
+  error_t err;
+  struct iouser *user;
+  struct protid *newpi;
+
+  if (!cred)
+    return EOPNOTSUPP;
+
+  err = iohelp_restrict_iouser (&user, cred->user, uids, nuids, gids, ngids);
+  if (err)
+    return err;
+
+  pthread_mutex_lock (&cred->po->np->lock);
+  err = diskfs_create_protid (cred->po, user, &newpi);
+  if (! err)
+    {
+      *newport = ports_get_right (newpi);
+      *newportpoly = MACH_MSG_TYPE_MAKE_SEND;
+      ports_port_deref (newpi);
+    }
+  pthread_mutex_unlock (&cred->po->np->lock);
+
+  iohelp_free_iouser (user);
+  return err;
+}