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source: vbox/trunk/src/VBox/Runtime/tools/RTCp.cpp@ 97698

Last change on this file since 97698 was 96407, checked in by vboxsync, 2 years ago

scm copyright and license note update
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1/* $Id: RTCp.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
2/** @file
3 * IPRT - cp like utility.
4 */
5
6/*
7 * Copyright (C) 2017-2022 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include <iprt/vfs.h>
42
43#include <iprt/buildconfig.h>
44#include <iprt/file.h>
45#include <iprt/fs.h>
46#include <iprt/err.h>
47#include <iprt/getopt.h>
48#include <iprt/initterm.h>
49#include <iprt/message.h>
50#include <iprt/mem.h>
51#include <iprt/path.h>
52#include <iprt/stream.h>
53#include <iprt/string.h>
54
55
56/*********************************************************************************************************************************
57* Structures and Typedefs *
58*********************************************************************************************************************************/
59/**
60 * CAT command options.
61 */
62typedef struct RTCMDCPOPTS
63{
64 /** -v, --verbose. */
65 bool fVerbose;
66
67 /** -H */
68 bool fFollowCommandLineSymlinks;
69
70 /** Set if recursive copy. */
71 bool fRecursive;
72 /** -x, --one-filesystem. */
73 bool fOneFileSystem;
74
75 /** Special --no-replace-nor-trucate hack for basic NTFS write support. */
76 bool fNoReplaceNorTruncate;
77
78 /** Number of sources. */
79 size_t cSources;
80 /** Source files/dirs. */
81 const char **papszSources;
82 /** Destination dir/file. */
83 const char *pszDestination;
84} RTCMDCPOPTS;
85/** Pointer to const CAT options. */
86typedef RTCMDCPOPTS const *PCRTCMDCPOPTS;
87
88
89
90/**
91 * Does the copying, source by source.
92 *
93 * @returns exit code.
94 * @param pOpts Options.
95 */
96static RTEXITCODE rtCmdCpDoIt(PCRTCMDCPOPTS pOpts)
97{
98 /*
99 * Check out what the destination is.
100 */
101/** @todo need to cache + share VFS chain elements here! */
102 RTERRINFOSTATIC ErrInfo;
103 uint32_t offError;
104 RTFSOBJINFO DstObjInfo;
105 int rc = RTVfsChainQueryInfo(pOpts->pszDestination, &DstObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_FOLLOW_LINK,
106 &offError, RTErrInfoInitStatic(&ErrInfo));
107 if (RT_SUCCESS(rc))
108 {
109 if (pOpts->cSources > 1 && !RTFS_IS_DIRECTORY(DstObjInfo.Attr.fMode))
110 return RTMsgErrorExitFailure("Mutiple files to copy and destination is not a directory!");
111 }
112 else if (rc != VERR_FILE_NOT_FOUND)
113 return RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", pOpts->pszDestination, rc, offError, &ErrInfo.Core);
114 else
115 RT_ZERO(DstObjInfo);
116#if !RT_GNUC_PREREQ(8,2) || RT_GNUC_PREREQ(8,3) /* GCC 8.2 produces a tautological compare warning/error here. */
117 AssertCompile(!RTFS_IS_DIRECTORY(0));
118#endif
119
120 /*
121 * Process the sources.
122 */
123 RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
124 for (size_t iSrc = 0; iSrc < pOpts->cSources; iSrc++)
125 {
126 const char *pszSrc = pOpts->papszSources[iSrc];
127 RTFSOBJINFO SrcObjInfo;
128 RT_ZERO(SrcObjInfo);
129 rc = RTVfsChainQueryInfo(pszSrc, &SrcObjInfo, RTFSOBJATTRADD_UNIX,
130 pOpts->fFollowCommandLineSymlinks ? RTPATH_F_FOLLOW_LINK : RTPATH_F_ON_LINK,
131 &offError, RTErrInfoInitStatic(&ErrInfo));
132 if (RT_FAILURE(rc))
133 {
134 rcExit = RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", pszSrc, rc, offError, &ErrInfo.Core);
135 continue;
136 }
137
138 /*
139 * Regular file.
140 */
141 if (RTFS_IS_FILE(SrcObjInfo.Attr.fMode))
142 {
143 /* Open source. */
144 RTVFSFILE hVfsSrc;
145 rc = RTVfsChainOpenFile(pszSrc, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE,
146 &hVfsSrc, &offError, RTErrInfoInitStatic(&ErrInfo));
147 if (RT_SUCCESS(rc))
148 {
149 /* Make destination name if necessary and open destination.
150 Note! RTFILE_O_READ needed for VFS chains. */
151 char szDstPath[RTPATH_MAX];
152 const char *pszDst = pOpts->pszDestination;
153 if (RTFS_IS_DIRECTORY(DstObjInfo.Attr.fMode))
154 {
155 rc = RTPathJoin(szDstPath, sizeof(szDstPath), pszDst, RTPathFilename(pszSrc));
156 pszDst = szDstPath;
157 }
158 if (RT_SUCCESS(rc))
159 {
160 RTVFSFILE hVfsDst;
161 uint64_t fDstFlags = (pOpts->fNoReplaceNorTruncate ? RTFILE_O_OPEN_CREATE : RTFILE_O_CREATE_REPLACE)
162 | RTFILE_O_READWRITE | RTFILE_O_DENY_WRITE | (0666 << RTFILE_O_CREATE_MODE_SHIFT);
163 rc = RTVfsChainOpenFile(pszDst, fDstFlags, &hVfsDst, &offError, RTErrInfoInitStatic(&ErrInfo));
164 if (RT_SUCCESS(rc))
165 {
166 /* Copy the bytes. */
167 RTVFSIOSTREAM hVfsIosSrc = RTVfsFileToIoStream(hVfsSrc);
168 RTVFSIOSTREAM hVfsIosDst = RTVfsFileToIoStream(hVfsDst);
169
170 rc = RTVfsUtilPumpIoStreams(hVfsIosSrc, hVfsIosDst, 0);
171
172 if (RT_SUCCESS(rc))
173 {
174 if (pOpts->fVerbose)
175 RTPrintf("'%s' -> '%s'\n", pszSrc, pszDst);
176 }
177 else
178 rcExit = RTMsgErrorExitFailure("RTVfsUtilPumpIoStreams failed for '%s' -> '%s': %Rrc",
179 pszSrc, pszDst, rc);
180 RTVfsIoStrmRelease(hVfsIosSrc);
181 RTVfsIoStrmRelease(hVfsIosDst);
182 RTVfsFileRelease(hVfsDst);
183 }
184 else
185 rcExit = RTVfsChainMsgErrorExitFailure("RTVfsChainOpenFile", pszDst, rc, offError, &ErrInfo.Core);
186 }
187 else
188 rcExit = RTMsgErrorExitFailure("Destination path too long for source #%u (%Rrc): %s", iSrc, pszSrc, rc);
189 RTVfsFileRelease(hVfsSrc);
190 }
191 else
192 rcExit = RTVfsChainMsgErrorExitFailure("RTVfsChainOpenFile", pszSrc, rc, offError, &ErrInfo.Core);
193 }
194 /*
195 * Copying a directory requires the -R option to be active.
196 */
197 else if (RTFS_IS_DIRECTORY(SrcObjInfo.Attr.fMode))
198 {
199 if (pOpts->fRecursive)
200 {
201 /** @todo recursive copy */
202 rcExit = RTMsgErrorExitFailure("Recursion not implemented yet!");
203 }
204 else
205 rcExit = RTMsgErrorExitFailure("Source #%u is a directory: %s", iSrc + 1, pszSrc);
206 }
207 /*
208 * We currently don't support copying any other file types.
209 */
210 else
211 rcExit = RTMsgErrorExitFailure("Source #%u neither a file nor a directory: %s", iSrc + 1, pszSrc);
212 }
213 return rcExit;
214}
215
216
217/**
218 * A /bin/cp clone.
219 *
220 * @returns Program exit code.
221 *
222 * @param cArgs The number of arguments.
223 * @param papszArgs The argument vector. (Note that this may be
224 * reordered, so the memory must be writable.)
225 */
226RTEXITCODE RTCmdCp(unsigned cArgs, char **papszArgs)
227{
228
229 /*
230 * Parse the command line.
231 */
232 static const RTGETOPTDEF s_aOptions[] =
233 {
234 { "--archive", 'a', RTGETOPT_REQ_NOTHING },
235 { "--backup", 'B', RTGETOPT_REQ_STRING },
236 { "", 'b', RTGETOPT_REQ_NOTHING },
237 { "--copy-contents", 1024, RTGETOPT_REQ_NOTHING },
238 { "", 'd', RTGETOPT_REQ_NOTHING },
239 { "--no-dereference", 'P', RTGETOPT_REQ_NOTHING },
240 { "--force", 'f', RTGETOPT_REQ_NOTHING },
241 { "", 'H', RTGETOPT_REQ_NOTHING },
242 { "--link", 'l', RTGETOPT_REQ_NOTHING },
243 { "--dereference", 'L', RTGETOPT_REQ_NOTHING },
244 { "", 'p', RTGETOPT_REQ_NOTHING },
245 { "--preserve", 1026, RTGETOPT_REQ_STRING },
246 { "--no-preserve", 1027, RTGETOPT_REQ_STRING },
247 { "--recursive", 'R', RTGETOPT_REQ_NOTHING },
248 { "--remove-destination", 1028, RTGETOPT_REQ_NOTHING },
249 { "--reply", 1029, RTGETOPT_REQ_STRING },
250 { "--sparse", 1030, RTGETOPT_REQ_STRING },
251 { "--strip-trailing-slashes", 1031, RTGETOPT_REQ_NOTHING },
252 { "--symbolic-links", 's', RTGETOPT_REQ_NOTHING },
253 { "--suffix", 'S', RTGETOPT_REQ_STRING },
254 { "--target-directory", 't', RTGETOPT_REQ_STRING },
255 { "--no-target-directory", 'T', RTGETOPT_REQ_NOTHING },
256 { "--update", 'u', RTGETOPT_REQ_NOTHING },
257 { "--verbose", 'v', RTGETOPT_REQ_NOTHING },
258 { "--one-file-system", 'x', RTGETOPT_REQ_NOTHING },
259 { "--no-replace-nor-trucate", 1032, RTGETOPT_REQ_NOTHING },
260 };
261
262 RTCMDCPOPTS Opts;
263 Opts.fVerbose = false;
264 Opts.fFollowCommandLineSymlinks = false;
265 Opts.fRecursive = false;
266 Opts.fOneFileSystem = false;
267 Opts.fNoReplaceNorTruncate = false;
268 Opts.pszDestination = NULL;
269 Opts.cSources = 0;
270 Opts.papszSources = (const char **)RTMemAllocZ(sizeof(const char *) * (cArgs + 2));
271 AssertReturn(Opts.papszSources, RTEXITCODE_FAILURE);
272
273 RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
274
275 RTGETOPTSTATE GetState;
276 int rc = RTGetOptInit(&GetState, cArgs, papszArgs, s_aOptions, RT_ELEMENTS(s_aOptions), 1,
277 RTGETOPTINIT_FLAGS_OPTS_FIRST);
278 if (RT_SUCCESS(rc))
279 {
280 bool fContinue = true;
281 do
282 {
283 RTGETOPTUNION ValueUnion;
284 int chOpt = RTGetOpt(&GetState, &ValueUnion);
285 switch (chOpt)
286 {
287 case 0:
288 if (Opts.pszDestination == NULL && Opts.cSources == 0)
289 rcExit = RTMsgErrorExit(RTEXITCODE_SYNTAX, "Missing source and destination");
290 else if (Opts.pszDestination == NULL && Opts.cSources == 1)
291 rcExit = RTMsgErrorExit(RTEXITCODE_SYNTAX, "Missing destination");
292 else if (Opts.pszDestination != NULL && Opts.cSources == 0)
293 rcExit = RTMsgErrorExit(RTEXITCODE_SYNTAX, "Missing source");
294 else
295 {
296 if (Opts.pszDestination == NULL && Opts.cSources > 0)
297 Opts.pszDestination = Opts.papszSources[--Opts.cSources];
298 Assert(Opts.cSources > 0);
299 rcExit = rtCmdCpDoIt(&Opts);
300 }
301 fContinue = false;
302 break;
303
304 case VINF_GETOPT_NOT_OPTION:
305 Assert(Opts.cSources < cArgs);
306 Opts.papszSources[Opts.cSources++] = ValueUnion.psz;
307 break;
308
309 case 'H':
310 Opts.fFollowCommandLineSymlinks = true;
311 break;
312
313 case 'R':
314 Opts.fRecursive = true;
315 break;
316 case 'x':
317 Opts.fOneFileSystem = true;
318 break;
319
320 case 'v':
321 Opts.fVerbose = true;
322 break;
323
324 case 1032:
325 Opts.fNoReplaceNorTruncate = true;
326 break;
327
328 case 'h':
329 RTPrintf("Usage: to be written\nOption dump:\n");
330 for (unsigned i = 0; i < RT_ELEMENTS(s_aOptions); i++)
331 RTPrintf(" -%c,%s\n", s_aOptions[i].iShort, s_aOptions[i].pszLong);
332 fContinue = false;
333 break;
334
335 case 'V':
336 RTPrintf("%sr%d\n", RTBldCfgVersion(), RTBldCfgRevision());
337 fContinue = false;
338 break;
339
340 default:
341 rcExit = RTGetOptPrintError(chOpt, &ValueUnion);
342 fContinue = false;
343 break;
344 }
345 } while (fContinue);
346 }
347 else
348 rcExit = RTMsgErrorExit(RTEXITCODE_SYNTAX, "RTGetOptInit: %Rrc", rc);
349 RTMemFree(Opts.papszSources);
350 return rcExit;
351}
352
353
354int main(int argc, char **argv)
355{
356 int rc = RTR3InitExe(argc, &argv, 0);
357 if (RT_FAILURE(rc))
358 return RTMsgInitFailure(rc);
359 return RTCmdCp(argc, argv);
360}
361
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