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/* $Id: dir2.cpp $ */
/** @file
* IPRT - Directory Manipulation, Part 2.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* 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_DIR
#include <iprt/dir.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/file.h>
#include <iprt/err.h>
#include <iprt/log.h>
#include <iprt/mem.h>
#include <iprt/param.h>
#include <iprt/path.h>
#include <iprt/string.h>
#include "internal/path.h"
/**
* Recursion worker for RTDirRemoveRecursive.
*
* @returns IPRT status code.
* @param pszBuf The path buffer. Contains the abs path to the
* directory to recurse into. Trailing slash.
* @param cchDir The length of the directory we're cursing into,
* including the trailing slash.
* @param pDirEntry The dir entry buffer. (Shared to save stack.)
* @param pObjInfo The object info buffer. (ditto)
*/
static int rtDirRemoveRecursiveSub(char *pszBuf, size_t cchDir, PRTDIRENTRY pDirEntry, PRTFSOBJINFO pObjInfo)
{
AssertReturn(RTPATH_IS_SLASH(pszBuf[cchDir - 1]), VERR_INTERNAL_ERROR_4);
/*
* Enumerate the directory content and dispose of it.
*/
RTDIR hDir;
int rc = RTDirOpen(&hDir, pszBuf);
if (RT_FAILURE(rc))
return rc;
while (RT_SUCCESS(rc = RTDirRead(hDir, pDirEntry, NULL)))
{
if (!RTDirEntryIsStdDotLink(pDirEntry))
{
/* Construct the full name of the entry. */
if (cchDir + pDirEntry->cbName + 1 /* dir slash */ >= RTPATH_MAX)
{
rc = VERR_FILENAME_TOO_LONG;
break;
}
memcpy(&pszBuf[cchDir], pDirEntry->szName, pDirEntry->cbName + 1);
/* Deal with the unknown type. */
if (pDirEntry->enmType == RTDIRENTRYTYPE_UNKNOWN)
{
rc = RTPathQueryInfoEx(pszBuf, pObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK);
if (RT_SUCCESS(rc) && RTFS_IS_DIRECTORY(pObjInfo->Attr.fMode))
pDirEntry->enmType = RTDIRENTRYTYPE_DIRECTORY;
else if (RT_SUCCESS(rc) && RTFS_IS_FILE(pObjInfo->Attr.fMode))
pDirEntry->enmType = RTDIRENTRYTYPE_FILE;
else if (RT_SUCCESS(rc) && RTFS_IS_SYMLINK(pObjInfo->Attr.fMode))
pDirEntry->enmType = RTDIRENTRYTYPE_SYMLINK;
}
/* Try the delete the fs object. */
switch (pDirEntry->enmType)
{
case RTDIRENTRYTYPE_FILE:
rc = RTFileDelete(pszBuf);
break;
case RTDIRENTRYTYPE_DIRECTORY:
{
size_t cchSubDir = cchDir + pDirEntry->cbName;
pszBuf[cchSubDir++] = '/';
pszBuf[cchSubDir] = '\0';
rc = rtDirRemoveRecursiveSub(pszBuf, cchSubDir, pDirEntry, pObjInfo);
if (RT_SUCCESS(rc))
{
pszBuf[cchSubDir] = '\0';
rc = RTDirRemove(pszBuf);
}
break;
}
//case RTDIRENTRYTYPE_SYMLINK:
// rc = RTSymlinkDelete(pszBuf, 0);
// break;
default:
/** @todo not implemented yet. */
rc = VINF_SUCCESS;
break;
}
if (RT_FAILURE(rc))
break;
}
}
if (rc == VERR_NO_MORE_FILES)
rc = VINF_SUCCESS;
RTDirClose(hDir);
return rc;
}
RTDECL(int) RTDirRemoveRecursive(const char *pszPath, uint32_t fFlags)
{
AssertReturn(!(fFlags & ~RTDIRRMREC_F_VALID_MASK), VERR_INVALID_PARAMETER);
/* Get an absolute path because this is easier to work with. */
/** @todo use RTPathReal here instead? */
char szAbsPath[RTPATH_MAX];
int rc = RTPathAbs(pszPath, szAbsPath, sizeof(szAbsPath));
if (RT_FAILURE(rc))
return rc;
/* This API is not permitted applied to the root of anything. */
if (RTPathCountComponents(szAbsPath) <= 1)
return VERR_ACCESS_DENIED;
/* Because of the above restriction, we never have to deal with the root
slash problem and can safely strip any trailing slashes and add a
definite one. */
RTPathStripTrailingSlash(szAbsPath);
size_t cchAbsPath = strlen(szAbsPath);
if (cchAbsPath + 1 >= RTPATH_MAX)
return VERR_FILENAME_TOO_LONG;
szAbsPath[cchAbsPath++] = '/';
szAbsPath[cchAbsPath] = 0;
/* Check if it exists so we can return quietly if it doesn't. */
RTFSOBJINFO SharedObjInfoBuf;
rc = RTPathQueryInfoEx(szAbsPath, &SharedObjInfoBuf, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK);
if ( rc == VERR_PATH_NOT_FOUND
|| rc == VERR_FILE_NOT_FOUND)
return VINF_SUCCESS;
if (RT_FAILURE(rc))
return rc;
if (!RTFS_IS_DIRECTORY(SharedObjInfoBuf.Attr.fMode))
return VERR_NOT_A_DIRECTORY;
/* We're all set for the recursion now, so get going. */
RTDIRENTRY SharedDirEntryBuf;
rc = rtDirRemoveRecursiveSub(szAbsPath, cchAbsPath, &SharedDirEntryBuf, &SharedObjInfoBuf);
/* Remove the specified directory if desired and removing the content was
successful. */
if ( RT_SUCCESS(rc)
&& !(fFlags & RTDIRRMREC_F_CONTENT_ONLY))
{
szAbsPath[cchAbsPath] = 0;
rc = RTDirRemove(szAbsPath);
}
return rc;
}
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