1 files changed, 71 insertions, 0 deletions
diff --git a/hurd/hurd/ioctl.h b/hurd/hurd/ioctl.h
new file mode 100644
index 0000000000..cc83433c17
--- /dev/null
+++ b/hurd/hurd/ioctl.h
@@ -0,0 +1,71 @@
+/* User-registered handlers for specific `ioctl' requests.
+Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#ifndef	_HURD_IOCTL_H
+#define	_HURD_IOCTL_H	1
+
+#define	__need___va_list
+#include <stdarg.h>
+
+
+/* Type of handler function, called like ioctl to do its entire job.  */
+typedef int (*ioctl_handler_t) (int fd, int request, void *arg);
+
+/* Structure that records an ioctl handler.  */
+struct ioctl_handler
+  {
+    int first_request, last_request; /* Range of handled request values.  */
+
+    /* Handler function, called like ioctl to do its entire job.  */
+    ioctl_handler_t handler;
+
+    struct ioctl_handler *next;	/* Next handler.  */
+  };
+
+
+/* Register HANDLER to handle ioctls with REQUEST values between
+   FIRST_REQUEST and LAST_REQUEST inclusive.  Returns zero if successful.
+   Return nonzero and sets `errno' for an error.  */
+
+extern int hurd_register_ioctl_handler (int first_request, int last_request,
+					ioctl_handler_t handler);
+
+
+/* Define a library-internal handler for ioctl commands between FIRST and
+   LAST inclusive.  The last element gratuitously references HANDLER to
+   avoid `defined but not used' warnings.  */
+
+#define	_HURD_HANDLE_IOCTLS(handler, first, last)			      \
+  static const struct ioctl_handler handler##_ioctl_handler =		      \
+    { (first), (last), (int (*) (int, int, void *)) (handler),	      \
+	(&(handler), &(handler##_ioctl_handler), NULL) };		      \
+  text_set_element (_hurd_ioctl_handler_lists, ##handler##_ioctl_handler)
+
+/* Define a library-internal handler for a single ioctl command.  */
+
+#define _HURD_HANDLE_IOCTL(handler, ioctl) \
+  _HURD_HANDLE_IOCTLS (handler, (ioctl), (ioctl))
+
+
+/* Lookup the handler for the given ioctl request.  */
+
+ioctl_handler_t _hurd_lookup_ioctl_handler (int request);
+
+
+#endif	/* hurd/ioctl.h */