pathint-nt.cpp revision 5bf0ee311caa414469f26237ff607cb1b3591508
/* $Id$ */
/** @file
* IPRT - Native NT, Internal Path stuff.
*/
/*
* Copyright (C) 2006-2013 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP RTLOGGROUP_FS
#include "internal-r3-nt.h"
/**
* Handles the pass thru case.
*
* @returns IPRT status code.
* @param pNtName Where to return the NT name.
* @param phRootDir Where to return the root handle, if applicable.
* @param pszPath The UTF-8 path.
*/
static int rtNtPathToNativePassThru(struct _UNICODE_STRING *pNtName, PHANDLE phRootDir, const char *pszPath)
{
if (RT_SUCCESS(rc))
{
pwszPath[0] = '\\';
{
return VINF_SUCCESS;
}
}
return rc;
}
/**
* Converts a path to NT format and encoding.
*
* @returns IPRT status code.
* @param pNtName Where to return the NT name.
* @param phRootDir Where to return the root handle, if applicable.
* @param pszPath The UTF-8 path.
*/
static int rtNtPathToNative(struct _UNICODE_STRING *pNtName, PHANDLE phRootDir, const char *pszPath)
{
static char const s_szPrefixUnc[] = "\\??\\UNC\\";
static char const s_szPrefix[] = "\\??\\";
/*
* Very simple conversion of a win32-like path into an NT path.
*/
const char *pszPrefix = s_szPrefix;
if ( RTPATH_IS_SLASH(pszPath[0])
&& pszPath[2])
{
{
/*
* Device path.
* Note! I suspect \\.\stuff\..\otherstuff may be handled differently by windows.
*/
cchSkip = 4;
}
else
{
/* UNC */
cchSkip = 2;
}
}
/*
* Straighten out all .. and uncessary . references and convert slashes.
*/
char szPath[RTPATH_MAX];
if (RT_FAILURE(rc))
return rc;
/*
* Add prefix and convert it to UTF16.
*/
if (RT_FAILURE(rc))
return rc;
{
return VERR_FILENAME_TOO_LONG;
}
/*
* Success.
*/
return VINF_SUCCESS;
}
/**
* Frees the native path and root handle.
*
* @param pNtName The NT path after a successful rtNtPathToNative
* call.
* @param phRootDir The root handle variable after a
* rtNtPathToNative.
*/
{
}
/**
* Wrapper around NtCreateFile.
*
* @returns IPRT status code.
* @param pszPath The UTF-8 path.
* @param fDesiredAccess See NtCreateFile.
* @param fFileAttribs See NtCreateFile.
* @param fShareAccess See NtCreateFile.
* @param fCreateDisposition See NtCreateFile.
* @param fCreateOptions See NtCreateFile.
* @param fObjAttribs The OBJECT_ATTRIBUTES::Attributes value, see
* NtCreateFile and InitializeObjectAttributes.
* @param phHandle Where to return the handle.
* @param puAction Where to return the action taken. Optional.
*/
int rtNtPathOpen(const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs, ULONG fShareAccess,
{
if (RT_SUCCESS(rc))
{
&ObjAttr,
&Ios,
NULL /* AllocationSize*/,
NULL /*EaBuffer*/,
0 /*EaLength*/);
if (NT_SUCCESS(rcNt))
{
if (puAction)
rc = VINF_SUCCESS;
}
else
}
return rc;
}
/**
* Closes an handled open by rtNtPathOpen.
*
* @returns IPRT status code
* @param hHandle The handle value.
*/
{
if (NT_SUCCESS(rcNt))
return VINF_SUCCESS;
return RTErrConvertFromNtStatus(rcNt);
}