Restore XAllowDeviceEvents()

Got accidentally removed as part of
f938c524f74fa8828a  Purge device-based window access code.

XAllowDeviceEvents is the XI equivalent to XAllowEvents, required to thaw devices
after grabs, not related to the access control code.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

2 files changed, 85 insertions, 0 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 0d6071c..2b26378 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -3,6 +3,7 @@
 lib_LTLIBRARIES = libXi.la
 
 libXi_la_SOURCES = \
+		  XAllowDv.c \
 		  XChDevHier.c \
 		  XChDProp.c \
 		  XChgDCtl.c \
diff --git a/src/XAllowDv.c b/src/XAllowDv.c
new file mode 100644
index 0000000..d19443d
--- /dev/null
+++ b/src/XAllowDv.c
@@ -0,0 +1,84 @@
+/************************************************************
+
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
+
+			All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Hewlett-Packard not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+********************************************************/
+
+/***********************************************************************
+ *
+ * XAllowDeviceEvents - Thaw a frozen extension device.
+ *
+ */
+
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XIproto.h>
+#include <X11/Xlibint.h>
+#include <X11/extensions/XInput.h>
+#include <X11/extensions/extutil.h>
+#include "XIint.h"
+
+int
+XAllowDeviceEvents(
+    register Display	*dpy,
+    XDevice		 *dev,
+    int			 event_mode,
+    Time		 time)
+{
+    xAllowDeviceEventsReq *req;
+    XExtDisplayInfo *info = XInput_find_display(dpy);
+
+    LockDisplay(dpy);
+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
+	return (NoSuchExtension);
+
+    GetReq(AllowDeviceEvents, req);
+    req->reqType = info->codes->major_opcode;
+    req->ReqType = X_AllowDeviceEvents;
+    req->deviceid = dev->device_id;
+    req->mode = event_mode;
+    req->time = time;
+
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return (Success);
+}