1 files changed, 36 insertions, 0 deletions
diff --git a/libdiskfs/io-sigio.c b/libdiskfs/io-sigio.c
new file mode 100644
index 00000000..229129bc
--- /dev/null
+++ b/libdiskfs/io-sigio.c
@@ -0,0 +1,36 @@
+/* 
+   Copyright (C) 1994, 1995 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"
+#include <fcntl.h>
+
+/* Implement io_sigio as described in <hurd/io.defs>.  We do this
+   for O_FSYNC right now, but will eventually do it for async I/O
+   too.  */
+kern_return_t
+diskfs_S_io_sigio (struct protid *cred)
+{
+  if (!cred)
+    return EOPNOTSUPP;
+  
+  mutex_lock (&cred->po->np->lock);
+  if ((cred->po->openstat & O_FSYNC) || diskfs_synchronous)
+    diskfs_file_update (cred->po->np, 1);
+  mutex_unlock (&cred->po->np->lock);
+  return 0;
+}