1 files changed, 147 insertions, 0 deletions
diff --git a/src/VBox/HostServices/HostChannel/HostChannel.h b/src/VBox/HostServices/HostChannel/HostChannel.h
new file mode 100644
index 00000000..9e8eb95c
--- /dev/null
+++ b/src/VBox/HostServices/HostChannel/HostChannel.h
@@ -0,0 +1,147 @@
+/* @file
+ *
+ * Host Channel
+ */
+
+/*
+ * Copyright (C) 2012-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * 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, in version 3 of the
+ * License.
+ *
+ * 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, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#ifndef VBOX_INCLUDED_SRC_HostChannel_HostChannel_h
+#define VBOX_INCLUDED_SRC_HostChannel_HostChannel_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/list.h>
+
+#define LOG_GROUP LOG_GROUP_HGCM
+#include <VBox/log.h>
+#include <VBox/HostServices/VBoxHostChannel.h>
+
+#define HOSTCHLOG Log
+
+#ifdef DEBUG_sunlover
+# undef HOSTCHLOG
+# define HOSTCHLOG LogRel
+#endif /* DEBUG_sunlover */
+
+struct VBOXHOSTCHCTX;
+typedef struct VBOXHOSTCHCTX VBOXHOSTCHCTX;
+
+typedef struct VBOXHOSTCHCLIENT
+{
+    RTLISTNODE nodeClient;
+
+    VBOXHOSTCHCTX *pCtx;
+
+    uint32_t u32ClientID;
+
+    RTLISTANCHOR listChannels;
+    uint32_t volatile u32HandleSrc;
+
+    RTLISTANCHOR listContexts; /* Callback contexts. */
+
+    RTLISTANCHOR listEvents;
+
+    bool fAsync;        /* Guest is waiting for a message. */
+
+    struct {
+        VBOXHGCMCALLHANDLE callHandle;
+        VBOXHGCMSVCPARM *paParms;
+    } async;
+
+} VBOXHOSTCHCLIENT;
+
+
+/*
+ * The service functions. Locking is between the service thread and the host channel provider thread.
+ */
+int vboxHostChannelLock(void);
+void vboxHostChannelUnlock(void);
+
+int vboxHostChannelInit(void);
+void vboxHostChannelDestroy(void);
+
+int vboxHostChannelClientConnect(VBOXHOSTCHCLIENT *pClient);
+void vboxHostChannelClientDisconnect(VBOXHOSTCHCLIENT *pClient);
+
+int vboxHostChannelAttach(VBOXHOSTCHCLIENT *pClient,
+                          uint32_t *pu32Handle,
+                          const char *pszName,
+                          uint32_t u32Flags);
+int vboxHostChannelDetach(VBOXHOSTCHCLIENT *pClient,
+                          uint32_t u32Handle);
+
+int vboxHostChannelSend(VBOXHOSTCHCLIENT *pClient,
+                        uint32_t u32Handle,
+                        const void *pvData,
+                        uint32_t cbData);
+int vboxHostChannelRecv(VBOXHOSTCHCLIENT *pClient,
+                        uint32_t u32Handle,
+                        void *pvData,
+                        uint32_t cbData,
+                        uint32_t *pu32DataReceived,
+                        uint32_t *pu32DataRemaining);
+int vboxHostChannelControl(VBOXHOSTCHCLIENT *pClient,
+                           uint32_t u32Handle,
+                           uint32_t u32Code,
+                           void *pvParm,
+                           uint32_t cbParm,
+                           void *pvData,
+                           uint32_t cbData,
+                           uint32_t *pu32SizeDataReturned);
+
+int vboxHostChannelEventWait(VBOXHOSTCHCLIENT *pClient,
+                             bool *pfEvent,
+                             VBOXHGCMCALLHANDLE callHandle,
+                             VBOXHGCMSVCPARM *paParms);
+
+int vboxHostChannelEventCancel(VBOXHOSTCHCLIENT *pClient);
+
+int vboxHostChannelQuery(VBOXHOSTCHCLIENT *pClient,
+                         const char *pszName,
+                         uint32_t u32Code,
+                         void *pvParm,
+                         uint32_t cbParm,
+                         void *pvData,
+                         uint32_t cbData,
+                         uint32_t *pu32SizeDataReturned);
+
+int vboxHostChannelRegister(const char *pszName,
+                            const VBOXHOSTCHANNELINTERFACE *pInterface,
+                            uint32_t cbInterface);
+int vboxHostChannelUnregister(const char *pszName);
+
+
+void vboxHostChannelEventParmsSet(VBOXHGCMSVCPARM *paParms,
+                                  uint32_t u32ChannelHandle,
+                                  uint32_t u32Id,
+                                  const void *pvEvent,
+                                  uint32_t cbEvent);
+
+void vboxHostChannelReportAsync(VBOXHOSTCHCLIENT *pClient,
+                                uint32_t u32ChannelHandle,
+                                uint32_t u32Id,
+                                const void *pvEvent,
+                                uint32_t cbEvent);
+
+#endif /* !VBOX_INCLUDED_SRC_HostChannel_HostChannel_h */