1 files changed, 116 insertions, 0 deletions
diff --git a/libdiskfs/fsys-options.c b/libdiskfs/fsys-options.c
new file mode 100644
index 00000000..ea5ee8c5
--- /dev/null
+++ b/libdiskfs/fsys-options.c
@@ -0,0 +1,116 @@
+/* Parse run-time options
+
+   Copyright (C) 1995, 1996, 1998 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 this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <errno.h>
+#include <argz.h>
+#include <hurd/fsys.h>
+#include <string.h>
+
+#include "priv.h"
+#include "fsys_S.h"
+
+/* Implement fsys_set_options as described in <hurd/fsys.defs>. */
+kern_return_t
+diskfs_S_fsys_set_options (fsys_t fsys,
+			   mach_port_t reply,
+			   mach_msg_type_name_t replytype,
+			   char *data, mach_msg_type_number_t len,
+			   int do_children)
+{
+  error_t err = 0;
+  struct port_info *pt =
+    ports_lookup_port (diskfs_port_bucket, fsys, diskfs_control_class);
+
+  error_t
+    helper (struct node *np)
+      {
+	error_t error;
+	mach_port_t control;
+
+	error = fshelp_fetch_control (&np->transbox, &control);
+	mutex_unlock (&np->lock);
+	if (!error && (control != MACH_PORT_NULL))
+	  {
+	    error = fsys_set_options (control, data, len, do_children);
+	    mach_port_deallocate (mach_task_self (), control);
+	  }
+	else
+	  error = 0;
+	mutex_lock (&np->lock);
+
+	if ((error == MIG_SERVER_DIED) || (error == MACH_SEND_INVALID_DEST))
+	  error = 0;
+	return error;
+      }
+
+  if (!pt)
+    return EOPNOTSUPP;
+
+  if (do_children)
+    {
+      rwlock_writer_lock (&diskfs_fsys_lock);
+      err = diskfs_node_iterate (helper);
+      rwlock_writer_unlock (&diskfs_fsys_lock);
+    }
+
+  if (!err)
+    {
+      rwlock_writer_lock (&diskfs_fsys_lock);
+      err = diskfs_set_options (data, len);
+      rwlock_writer_unlock (&diskfs_fsys_lock);
+    }
+
+  ports_port_deref (pt);
+  return err;
+}
+
+/* Implement fsys_get_options as described in <hurd/fsys.defs>. */
+error_t
+diskfs_S_fsys_get_options (fsys_t fsys,
+			   mach_port_t reply,
+			   mach_msg_type_name_t replytype,
+			   char **data, mach_msg_type_number_t *data_len)
+{
+  char *argz = 0;
+  size_t argz_len = 0;
+  error_t err;
+  struct port_info *port =
+    ports_lookup_port (diskfs_port_bucket, fsys, diskfs_control_class);
+
+  if (!port)
+    return EOPNOTSUPP;
+
+  err = argz_add (&argz, &argz_len, program_invocation_name);
+  if (err)
+    return err;
+
+  rwlock_reader_lock (&diskfs_fsys_lock);
+  err = diskfs_append_args (&argz, &argz_len);
+  rwlock_reader_unlock (&diskfs_fsys_lock);
+
+  if (! err)
+    /* Move ARGZ from a malloced buffer into a vm_alloced one.  */
+    err = iohelp_return_malloced_buffer (argz, argz_len, data, data_len);
+  else
+    free (argz);
+
+  ports_port_deref (port);
+  return err;
+}