1 files changed, 106 insertions, 0 deletions
diff --git a/libnetfs/shutdown.c b/libnetfs/shutdown.c
new file mode 100644
index 00000000..94d4b207
--- /dev/null
+++ b/libnetfs/shutdown.c
@@ -0,0 +1,106 @@
+/*
+   Copyright (C) 1993,94,95,96,98,99,2001 Free Software Foundation, Inc.
+
+This file is part of the GNU Hurd.
+
+The GNU Hurd 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.
+
+The GNU Hurd 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 the GNU Hurd; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Written by Michael I. Bushnell.  */
+
+#include "priv.h"
+#include <errno.h>
+#include <sys/stat.h>
+#include <hurd/fsys.h>
+#include <hurd/fshelp.h>
+#include <pthread.h>
+
+/* Shutdown the filesystem; flags are as for fsys_goaway. */
+error_t
+netfs_shutdown (int flags)
+{
+  error_t
+  helper (struct node *node)
+    {
+      error_t err;
+      mach_port_t control;
+
+      err = fshelp_fetch_control (&node->transbox, &control);
+      if (!err && (control != MACH_PORT_NULL))
+        {
+          pthread_mutex_unlock (&node->lock);
+          err = fsys_goaway (control, flags);
+          mach_port_deallocate (mach_task_self (), control);
+          pthread_mutex_lock (&node->lock);
+        }
+      else
+        err = 0;
+
+      if ((err == MIG_SERVER_DIED) || (err == MACH_SEND_INVALID_DEST))
+        err = 0;
+
+      return err;
+    }
+
+  int nports;
+  int err;
+
+  if ((flags & FSYS_GOAWAY_UNLINK)
+      && S_ISDIR (netfs_root_node->nn_stat.st_mode))
+    return EBUSY;
+
+#ifdef NOTYET
+  if (flags & FSYS_GOAWAY_RECURSE)
+    {
+      err = netfs_node_iterate (helper);
+      if (err)
+	return err;
+    }
+#endif
+
+#ifdef NOTYET
+  pthread_rwlock_wrlock (&netfs_fsys_lock);
+#endif
+
+  /* Permit all current RPC's to finish, and then suspend any new ones.  */
+  err = ports_inhibit_class_rpcs (netfs_protid_class);
+  if (err)
+    {
+#ifdef  NOTYET
+      pthread_rwlock_unlock (&netfs_fsys_lock);
+#endif
+      return err;
+    }
+
+  nports = ports_count_class (netfs_protid_class);
+  if (((flags & FSYS_GOAWAY_FORCE) == 0) && nports)
+    /* There are outstanding user ports; resume operations. */
+    {
+      ports_enable_class (netfs_protid_class);
+      ports_resume_class_rpcs (netfs_protid_class);
+#ifdef NOTYET
+      pthread_rwlock_unlock (&netfs_fsys_lock);
+#endif
+      return EBUSY;
+    }
+
+  if (!(flags & FSYS_GOAWAY_NOSYNC))
+    {
+      err = netfs_attempt_syncfs (0, flags);
+      if (err)
+        return err;
+    }
+
+  return 0;
+}