sync code with last improvements from OpenBSD

xserver/xfixes/disconnect.c

@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2010 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Copyright © 2002 Keith Packard
+ *
+ * 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, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH 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.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "xfixesint.h"
+#include "opaque.h"
+
+static DevPrivateKeyRec ClientDisconnectPrivateKeyRec;
+
+#define ClientDisconnectPrivateKey (&ClientDisconnectPrivateKeyRec)
+
+typedef struct _ClientDisconnect {
+    int disconnect_mode;
+} ClientDisconnectRec, *ClientDisconnectPtr;
+
+#define GetClientDisconnect(s) \
+    ((ClientDisconnectPtr) dixLookupPrivate(&(s)->devPrivates, \
+                                            ClientDisconnectPrivateKey))
+
+int
+ProcXFixesSetClientDisconnectMode(ClientPtr client)
+{
+    ClientDisconnectPtr pDisconnect = GetClientDisconnect(client);
+
+    REQUEST(xXFixesSetClientDisconnectModeReq);
+
+    pDisconnect->disconnect_mode = stuff->disconnect_mode;
+
+    return Success;
+}
+
+int _X_COLD
+SProcXFixesSetClientDisconnectMode(ClientPtr client)
+{
+    REQUEST(xXFixesSetClientDisconnectModeReq);
+
+    swaps(&stuff->length);
+
+    REQUEST_AT_LEAST_SIZE(xXFixesSetClientDisconnectModeReq);
+
+    swapl(&stuff->disconnect_mode);
+
+    return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
+}
+
+int
+ProcXFixesGetClientDisconnectMode(ClientPtr client)
+{
+    ClientDisconnectPtr pDisconnect = GetClientDisconnect(client);
+    xXFixesGetClientDisconnectModeReply reply;
+
+    REQUEST_SIZE_MATCH(xXFixesGetClientDisconnectModeReq);
+
+    reply = (xXFixesGetClientDisconnectModeReply) {
+        .type = X_Reply,
+        .sequenceNumber = client->sequence,
+        .length = 0,
+        .disconnect_mode = pDisconnect->disconnect_mode,
+    };
+    if (client->swapped) {
+        swaps(&reply.sequenceNumber);
+        swapl(&reply.disconnect_mode);
+    }
+    WriteToClient(client, sizeof(xXFixesGetClientDisconnectModeReply), &reply);
+
+    return Success;
+}
+
+int _X_COLD
+SProcXFixesGetClientDisconnectMode(ClientPtr client)
+{
+    REQUEST(xXFixesGetClientDisconnectModeReq);
+
+    swaps(&stuff->length);
+
+    REQUEST_SIZE_MATCH(xXFixesGetClientDisconnectModeReq);
+
+    return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
+}
+
+Bool
+XFixesShouldDisconnectClient(ClientPtr client)
+{
+    ClientDisconnectPtr pDisconnect = GetClientDisconnect(client);
+
+    if (!pDisconnect)
+        return FALSE;
+
+    if (dispatchExceptionAtReset & DE_TERMINATE)
+        return (pDisconnect->disconnect_mode & XFixesClientDisconnectFlagTerminate);
+
+    return FALSE;
+}
+
+Bool
+XFixesClientDisconnectInit(void)
+{
+    if (!dixRegisterPrivateKey(&ClientDisconnectPrivateKeyRec,
+                               PRIVATE_CLIENT, sizeof(ClientDisconnectRec)))
+        return FALSE;
+
+    return TRUE;
+}