1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/* $Id: dir2.cpp $ */
/** @file
* IPRT - Directory Manipulation, Part 2.
*/
/*
* Copyright (C) 2006-2022 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>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_DIR
#include <iprt/dir.h>
#include "internal/iprt.h"
#include <iprt/alloca.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 recursing into,
* including the trailing slash.
* @param cbBuf Size of the buffer @a pszBuf points to.
* @param pDirEntry The dir entry buffer. (Shared to save stack.)
* @param pObjInfo The object info buffer. (ditto)
* @param fFlags RTDIRRMREC_F_XXX.
*/
static int rtDirRemoveRecursiveSub(char *pszBuf, size_t cchDir, size_t cbBuf, PRTDIRENTRY pDirEntry, PRTFSOBJINFO pObjInfo,
uint32_t fFlags)
{
AssertReturn(RTPATH_IS_SLASH(pszBuf[cchDir - 1]), VERR_INTERNAL_ERROR_4);
/*
* Enumerate the directory content and dispose of it.
*/
RTDIR hDir;
int rc = RTDirOpenFiltered(&hDir, pszBuf, RTDIRFILTER_NONE, fFlags & RTDIRRMREC_F_NO_ABS_PATH ? RTDIR_F_NO_ABS_PATH : 0);
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 */ >= cbBuf)
{
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, cbBuf, pDirEntry, pObjInfo, fFlags);
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);
/*
* Allocate path buffer.
*/
char *pszAbsPath;
size_t cbAbsPathBuf = RTPATH_BIG_MAX;
char *pszAbsPathFree = pszAbsPath = (char *)RTMemTmpAlloc(cbAbsPathBuf);
if (!pszAbsPath)
{
cbAbsPathBuf = RTPATH_MAX;
pszAbsPath = (char *)alloca(RTPATH_MAX);
}
/*
* Get an absolute path because this is easier to work with and
* eliminates any races with changing CWD.
*/
int rc;
if (!(fFlags & RTDIRRMREC_F_NO_ABS_PATH))
rc = RTPathAbs(pszPath, pszAbsPath, cbAbsPathBuf);
else if (*pszPath != '\0')
rc = RTStrCopy(pszAbsPath, cbAbsPathBuf, pszPath);
else
rc = VERR_PATH_ZERO_LENGTH;
if (RT_SUCCESS(rc))
{
/*
* This API is not permitted applied to the root of anything.
*/
union
{
RTPATHPARSED Parsed;
uint8_t abParsed[RTPATHPARSED_MIN_SIZE];
} uBuf;
RTPathParse(pszPath, &uBuf.Parsed, sizeof(uBuf), RTPATH_STR_F_STYLE_HOST);
if ( uBuf.Parsed.cComps <= 1
&& (uBuf.Parsed.fProps & RTPATH_PROP_ROOT_SLASH))
rc = VERR_ACCESS_DENIED;
else
{
/*
* 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(pszAbsPath);
size_t cchAbsPath = strlen(pszAbsPath);
if (cchAbsPath + 1 < cbAbsPathBuf)
{
pszAbsPath[cchAbsPath++] = RTPATH_SLASH;
pszAbsPath[cchAbsPath] = '\0';
/*
* Check if it exists so we can return quietly if it doesn't.
*/
RTFSOBJINFO SharedObjInfoBuf;
rc = RTPathQueryInfoEx(pszAbsPath, &SharedObjInfoBuf, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK);
if ( rc == VERR_PATH_NOT_FOUND
|| rc == VERR_FILE_NOT_FOUND)
rc = VINF_SUCCESS;
else if ( RT_SUCCESS(rc)
&& RTFS_IS_DIRECTORY(SharedObjInfoBuf.Attr.fMode))
{
/*
* We're all set for the recursion now, so get going.
*/
RTDIRENTRY SharedDirEntryBuf;
rc = rtDirRemoveRecursiveSub(pszAbsPath, cchAbsPath, cbAbsPathBuf,
&SharedDirEntryBuf, &SharedObjInfoBuf, fFlags);
/*
* Remove the specified directory if desired and removing the content was successful.
*/
if ( RT_SUCCESS(rc)
&& !(fFlags & RTDIRRMREC_F_CONTENT_ONLY))
{
pszAbsPath[cchAbsPath] = 0;
rc = RTDirRemove(pszAbsPath);
}
}
else if (RT_SUCCESS(rc))
rc = VERR_NOT_A_DIRECTORY;
}
else
rc = VERR_FILENAME_TOO_LONG;
}
}
if (pszAbsPathFree)
RTMemTmpFree(pszAbsPathFree);
return rc;
}
|
