shflhandle.cpp revision c49f08bef6467cf8d9ae457570b8ac833f297e79
039cd2c4871a00e51af909222a34695d9cec3000vboxsync * Shared Folders:
039cd2c4871a00e51af909222a34695d9cec3000vboxsync * Handles helper functions.
e64031e20c39650a7bc902a3e1aba613b9415deevboxsync * Copyright (C) 2006-2007 Oracle Corporation
039cd2c4871a00e51af909222a34695d9cec3000vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
039cd2c4871a00e51af909222a34695d9cec3000vboxsync * available from http://www.virtualbox.org. This file is free software;
039cd2c4871a00e51af909222a34695d9cec3000vboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License (GPL) as published by the Free Software
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
039cd2c4871a00e51af909222a34695d9cec3000vboxsync * Very basic and primitive handle management. Should be sufficient for our needs.
039cd2c4871a00e51af909222a34695d9cec3000vboxsync * Handle allocation can be rather slow, but at least lookup is fast.
039cd2c4871a00e51af909222a34695d9cec3000vboxsynctypedef struct
039cd2c4871a00e51af909222a34695d9cec3000vboxsync pHandles = (SHFLINTHANDLE *)RTMemAllocZ (sizeof (SHFLINTHANDLE) * SHFLHANDLE_MAX);
039cd2c4871a00e51af909222a34695d9cec3000vboxsync /* Never return handle 0 */
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncSHFLHANDLE vbsfAllocHandle(PSHFLCLIENTDATA pClient, uint32_t uType,
039cd2c4871a00e51af909222a34695d9cec3000vboxsync Assert((uType & SHFL_HF_TYPE_MASK) != 0 && pvUserData);
039cd2c4871a00e51af909222a34695d9cec3000vboxsync /* Find next free handle */
039cd2c4871a00e51af909222a34695d9cec3000vboxsync /* Nice linear search */
039cd2c4871a00e51af909222a34695d9cec3000vboxsync for(handle=lastHandleIndex;handle<SHFLHANDLE_MAX;handle++)
039cd2c4871a00e51af909222a34695d9cec3000vboxsync /* Try once more from the start */
039cd2c4871a00e51af909222a34695d9cec3000vboxsync { /* Out of handles */
039cd2c4871a00e51af909222a34695d9cec3000vboxsync pHandles[handle].uFlags = (uType & SHFL_HF_TYPE_MASK) | SHFL_HF_VALID;
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncstatic int vbsfFreeHandle(PSHFLCLIENTDATA pClient, SHFLHANDLE handle)
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncuintptr_t vbsfQueryHandle(PSHFLCLIENTDATA pClient, SHFLHANDLE handle,
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncSHFLFILEHANDLE *vbsfQueryFileHandle(PSHFLCLIENTDATA pClient, SHFLHANDLE handle)
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsync return (SHFLFILEHANDLE *)vbsfQueryHandle(pClient, handle,
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncSHFLFILEHANDLE *vbsfQueryDirHandle(PSHFLCLIENTDATA pClient, SHFLHANDLE handle)
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsync return (SHFLFILEHANDLE *)vbsfQueryHandle(pClient, handle,
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncuint32_t vbsfQueryHandleType(PSHFLCLIENTDATA pClient, SHFLHANDLE handle)
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsync return pHandles[handle].uFlags & SHFL_HF_TYPE_MASK;
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncSHFLHANDLE vbsfAllocDirHandle(PSHFLCLIENTDATA pClient)
039cd2c4871a00e51af909222a34695d9cec3000vboxsync SHFLFILEHANDLE *pHandle = (SHFLFILEHANDLE *)RTMemAllocZ (sizeof (SHFLFILEHANDLE));
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsync return vbsfAllocHandle(pClient, pHandle->Header.u32Flags,
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncSHFLHANDLE vbsfAllocFileHandle(PSHFLCLIENTDATA pClient)
039cd2c4871a00e51af909222a34695d9cec3000vboxsync SHFLFILEHANDLE *pHandle = (SHFLFILEHANDLE *)RTMemAllocZ (sizeof (SHFLFILEHANDLE));
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsync return vbsfAllocHandle(pClient, pHandle->Header.u32Flags,
c49f08bef6467cf8d9ae457570b8ac833f297e79vboxsyncvoid vbsfFreeFileHandle(PSHFLCLIENTDATA pClient, SHFLHANDLE hHandle)