RTChMod.cpp@ 101592

Last change on this file since 101592 was 98103, checked in by vboxsync, 2 years ago
Copyright year updates by scm.
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1	/* $Id: RTChMod.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* IPRT - Changes the mode/attributes of a file system object.
4	*/
5
6	/*
7	* Copyright (C) 2013-2023 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/buildconfig.h>
42	#include <iprt/errcore.h>
43	#include <iprt/file.h>
44	#include <iprt/getopt.h>
45	#include <iprt/initterm.h>
46	#include <iprt/message.h>
47	#include <iprt/path.h>
48	#include <iprt/stream.h>
49	#include <iprt/string.h>
50	#include <iprt/vfs.h>
51
52
53	/*********************************************************************************************************************************
54	* Defined Constants And Macros *
55	*********************************************************************************************************************************/
56	/** What to clear we all bits are being set. */
57	#define RTCHMOD_SET_ALL_MASK (~( RTFS_TYPE_MASK \
58	\| RTFS_DOS_NT_ENCRYPTED \
59	\| RTFS_DOS_NT_COMPRESSED \
60	\| RTFS_DOS_NT_REPARSE_POINT \
61	\| RTFS_DOS_NT_SPARSE_FILE \
62	\| RTFS_DOS_NT_DEVICE \
63	\| RTFS_DOS_DIRECTORY))
64
65
66	/*********************************************************************************************************************************
67	* Structures and Typedefs *
68	*********************************************************************************************************************************/
69	typedef enum RTCMDCHMODNOISE
70	{
71	kRTCmdChModNoise_Quiet,
72	kRTCmdChModNoise_Default,
73	kRTCmdChModNoise_Changes,
74	kRTCmdChModNoise_Verbose
75	} RTCMDCHMODNOISE;
76
77
78	typedef struct RTCMDCHMODOPTS
79	{
80	/** The noise level. */
81	RTCMDCHMODNOISE enmNoiseLevel;
82	/** -R, --recursive */
83	bool fRecursive;
84	/** --preserve-root / --no-preserve-root (don't allow recursion from root). */
85	bool fPreserveRoot;
86	/** Whether to always use the VFS chain API (for testing). */
87	bool fAlwaysUseChainApi;
88	/** Which mode bits to set. */
89	RTFMODE fModeSet;
90	/** Which mode bits to clear. */
91	RTFMODE fModeClear;
92	} RTCMDCHMODOPTS;
93
94
95
96	/**
97	* Calculates the new file mode.
98	*
99	* @returns New mode mask.
100	* @param pOpts The chmod options.
101	* @param fMode The current file mode.
102	*/
103	static RTFMODE rtCmdMkModCalcNewMode(RTCMDCHMODOPTS const *pOpts, RTFMODE fMode)
104	{
105	fMode &= ~pOpts->fModeClear;
106	fMode \|= pOpts->fModeSet;
107	/** @todo do 'X' */
108	return fMode;
109	}
110
111
112	/**
113	* Changes the file mode of one file system object.
114	*
115	* @returns exit code
116	* @param pOpts The chmod options.
117	* @param pszPath The path to the file system object to change the
118	* file mode of.
119	*/
120	static RTEXITCODE rtCmdChModOne(RTCMDCHMODOPTS const pOpts, const char pszPath)
121	{
122	int rc;
123	RTFSOBJINFO ObjInfo;
124	bool fChanges = false;
125	if (!pOpts->fAlwaysUseChainApi && !RTVfsChainIsSpec(pszPath) )
126	{
127	rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK);
128	if (RT_SUCCESS(rc))
129	{
130	RTFMODE fNewMode = rtCmdMkModCalcNewMode(pOpts, ObjInfo.Attr.fMode);
131	fChanges = fNewMode != ObjInfo.Attr.fMode;
132	if (fChanges)
133	{
134	rc = RTPathSetMode(pszPath, fNewMode);
135	if (RT_FAILURE(rc))
136	RTMsgError("RTPathSetMode failed on '%s' with fNewMode=%#x: %Rrc", pszPath, fNewMode, rc);
137	}
138	}
139	else
140	RTMsgError("RTPathQueryInfoEx failed on '%s': %Rrc", pszPath, rc);
141	}
142	else
143	{
144	RTVFSOBJ hVfsObj;
145	uint32_t offError;
146	RTERRINFOSTATIC ErrInfo;
147	rc = RTVfsChainOpenObj(pszPath, RTFILE_O_ACCESS_ATTR_READWRITE \| RTFILE_O_DENY_NONE \| RTFILE_O_OPEN,
148	RTVFSOBJ_F_OPEN_ANY \| RTVFSOBJ_F_CREATE_NOTHING \| RTPATH_F_FOLLOW_LINK,
149	&hVfsObj, &offError, RTErrInfoInitStatic(&ErrInfo));
150	if (RT_SUCCESS(rc))
151	{
152	rc = RTVfsObjQueryInfo(hVfsObj, &ObjInfo, RTFSOBJATTRADD_NOTHING);
153	if (RT_SUCCESS(rc))
154	{
155	RTFMODE fNewMode = rtCmdMkModCalcNewMode(pOpts, ObjInfo.Attr.fMode);
156	fChanges = fNewMode != ObjInfo.Attr.fMode;
157	if (fChanges)
158	{
159	rc = RTVfsObjSetMode(hVfsObj, fNewMode, RTCHMOD_SET_ALL_MASK);
160	if (RT_FAILURE(rc))
161	RTMsgError("RTVfsObjSetMode failed on '%s' with fNewMode=%#x: %Rrc", pszPath, fNewMode, rc);
162	}
163	}
164	else
165	RTVfsChainMsgError("RTVfsObjQueryInfo", pszPath, rc, offError, &ErrInfo.Core);
166	RTVfsObjRelease(hVfsObj);
167	}
168	else
169	RTVfsChainMsgError("RTVfsChainOpenObject", pszPath, rc, offError, &ErrInfo.Core);
170	}
171
172	if (RT_SUCCESS(rc))
173	{
174	if (pOpts->enmNoiseLevel >= (fChanges ? kRTCmdChModNoise_Changes : kRTCmdChModNoise_Verbose))
175	RTPrintf("%s\n", pszPath);
176	return RTEXITCODE_SUCCESS;
177	}
178	return RTEXITCODE_FAILURE;
179	}
180
181
182	/**
183	* Recursively changes the file mode.
184	*
185	* @returns exit code
186	* @param pOpts The mkdir option.
187	* @param pszPath The path to start changing the mode of.
188	*/
189	static int rtCmdChModRecursive(RTCMDCHMODOPTS const pOpts, const char pszPath)
190	{
191	/*
192	* Check if it's a directory first. If not, join the non-recursive code.
193	*/
194	int rc;
195	uint32_t offError;
196	RTFSOBJINFO ObjInfo;
197	RTERRINFOSTATIC ErrInfo;
198	bool const fUseChainApi = pOpts->fAlwaysUseChainApi \|\| RTVfsChainIsSpec(pszPath);
199	if (!fUseChainApi)
200	{
201	rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK);
202	if (RT_FAILURE(rc))
203	return RTMsgErrorExitFailure("RTPathQueryInfoEx failed on '%s': %Rrc", pszPath, rc);
204	}
205	else
206	{
207	rc = RTVfsChainQueryInfo(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK,
208	&offError, RTErrInfoInitStatic(&ErrInfo));
209	if (RT_FAILURE(rc))
210	return RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", pszPath, rc, offError, &ErrInfo.Core);
211	}
212
213	if (!RTFS_IS_DIRECTORY(ObjInfo.Attr.fMode))
214	{
215	/*
216	* Don't bother redoing the above work if its not necessary.
217	*/
218	RTFMODE fNewMode = rtCmdMkModCalcNewMode(pOpts, ObjInfo.Attr.fMode);
219	if (fNewMode != ObjInfo.Attr.fMode)
220	return rtCmdChModOne(pOpts, pszPath);
221	if (pOpts->enmNoiseLevel >= kRTCmdChModNoise_Verbose)
222	RTPrintf("%s\n", pszPath);
223	return RTEXITCODE_SUCCESS;
224	}
225
226	/*
227	* For recursion we always use the VFS layer.
228	*/
229	RTVFSDIR hVfsDir;
230	if (!fUseChainApi)
231	{
232	rc = RTVfsDirOpenNormal(pszPath, 0 /** @todo write attrib flag*/, &hVfsDir);
233	if (RT_FAILURE(rc))
234	return RTMsgErrorExitFailure("RTVfsDirOpenNormal failed on '%s': %Rrc", pszPath, rc);
235	}
236	else
237	{
238	rc = RTVfsChainOpenDir(pszPath, 0 /** @todo write attrib flag*/, &hVfsDir, &offError, RTErrInfoInitStatic(&ErrInfo));
239	if (RT_FAILURE(rc))
240	return RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", pszPath, rc, offError, &ErrInfo.Core);
241	}
242
243	RTMsgError("Recursion is not yet implemented\n");
244	RTVfsDirRelease(hVfsDir);
245	rc = VERR_NOT_IMPLEMENTED;
246
247	return RT_SUCCESS(rc) ? RTEXITCODE_SUCCESS : RTEXITCODE_FAILURE;
248	}
249
250
251	static RTEXITCODE RTCmdChMod(unsigned cArgs, char **papszArgs)
252	{
253	/*
254	* Parse the command line.
255	*/
256	static const RTGETOPTDEF s_aOptions[] =
257	{
258	/* operations */
259	{ "--recursive", 'R', RTGETOPT_REQ_NOTHING },
260	{ "--preserve-root", 'x', RTGETOPT_REQ_NOTHING },
261	{ "--no-preserve-root", 'X', RTGETOPT_REQ_NOTHING },
262	{ "--changes", 'c', RTGETOPT_REQ_NOTHING },
263	{ "--quiet", 'f', RTGETOPT_REQ_NOTHING },
264	{ "--silent", 'f', RTGETOPT_REQ_NOTHING },
265	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
266	{ "--reference", 'Z', RTGETOPT_REQ_NOTHING },
267	{ "--always-use-vfs-chain-api", 'A', RTGETOPT_REQ_NOTHING },
268
269	};
270
271	RTGETOPTSTATE GetState;
272	int rc = RTGetOptInit(&GetState, cArgs, papszArgs, s_aOptions, RT_ELEMENTS(s_aOptions), 1,
273	RTGETOPTINIT_FLAGS_OPTS_FIRST);
274	if (RT_FAILURE(rc))
275	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTGetOpt failed: %Rrc", rc);
276
277	RTCMDCHMODOPTS Opts;
278	Opts.enmNoiseLevel = kRTCmdChModNoise_Default;
279	Opts.fPreserveRoot = false;
280	Opts.fRecursive = false;
281	Opts.fAlwaysUseChainApi = false;
282	Opts.fModeClear = 0;
283	Opts.fModeSet = 0;
284
285	RTGETOPTUNION ValueUnion;
286	while ( (rc = RTGetOpt(&GetState, &ValueUnion)) != 0
287	&& rc != VINF_GETOPT_NOT_OPTION)
288	{
289	switch (rc)
290	{
291	case 'R':
292	Opts.fRecursive = true;
293	break;
294
295	case 'x':
296	Opts.fPreserveRoot = true;
297	break;
298	case 'X':
299	Opts.fPreserveRoot = false;
300	break;
301
302	case 'f':
303	Opts.enmNoiseLevel = kRTCmdChModNoise_Quiet;
304	break;
305	case 'c':
306	Opts.enmNoiseLevel = kRTCmdChModNoise_Changes;
307	break;
308	case 'v':
309	Opts.enmNoiseLevel = kRTCmdChModNoise_Verbose;
310	break;
311
312	case 'Z':
313	{
314	RTFSOBJINFO ObjInfo;
315	RTERRINFOSTATIC ErrInfo;
316	uint32_t offError;
317	rc = RTVfsChainQueryInfo(ValueUnion.psz, &ObjInfo,RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK,
318	&offError, RTErrInfoInitStatic(&ErrInfo));
319	if (RT_FAILURE(rc))
320	return RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", ValueUnion.psz, rc, offError, &ErrInfo.Core);
321	Opts.fModeClear = RTCHMOD_SET_ALL_MASK;
322	Opts.fModeSet = ObjInfo.Attr.fMode & RTCHMOD_SET_ALL_MASK;
323	break;
324	}
325
326	case 'A':
327	Opts.fAlwaysUseChainApi = true;
328	break;
329
330	case 'h':
331	RTPrintf("Usage: %s [options] <mode> <file> [..]\n"
332	"\n"
333	"Options:\n"
334	" -f, --silent, --quiet\n"
335	" -c, --changes\n"
336	" -v, --verbose\n"
337	" Noise level selection.\n"
338	" -R, --recursive\n"
339	" Recurse into directories.\n"
340	" --preserve-root, --no-preserve-root\n"
341	" Whether to allow recursion from the root (default: yes).\n"
342	" --reference <file>\n"
343	" Take mode mask to use from <file> instead of <mode>.\n"
344	"\n"
345	"The <mode> part isn't fully implemented, so only numerical octal notation\n"
346	"works. Prefix the number(s) with 0x to use hexadecimal. There are two forms\n"
347	"of the numerical notation: <SET> and <SET>:<CLEAR>\n"
348	, papszArgs[0]);
349	return RTEXITCODE_SUCCESS;
350
351	case 'V':
352	RTPrintf("%sr%d\n", RTBldCfgVersion(), RTBldCfgRevision());
353	return RTEXITCODE_SUCCESS;
354
355	default:
356
357	return RTGetOptPrintError(rc, &ValueUnion);
358	}
359	}
360
361	/*
362	* The MODE.
363	*/
364	if ( Opts.fModeClear == 0
365	&& Opts.fModeSet == 0)
366	{
367	if (rc != VINF_GETOPT_NOT_OPTION)
368	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "No mode change specified.\n");
369
370	char *pszNext;
371	if ( ValueUnion.psz[0] == '0'
372	&& (ValueUnion.psz[1] == 'x' \|\| ValueUnion.psz[1] == 'X'))
373	rc = RTStrToUInt32Ex(ValueUnion.psz, &pszNext, 16, &Opts.fModeSet);
374	else
375	rc = RTStrToUInt32Ex(ValueUnion.psz, &pszNext, 8, &Opts.fModeSet);
376	if ( rc != VINF_SUCCESS
377	&& (rc != VWRN_TRAILING_CHARS \|\| *pszNext != ':'))
378	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unable to parse mode mask: %s\n", ValueUnion.psz);
379	Opts.fModeSet &= RTCHMOD_SET_ALL_MASK;
380
381	if (rc == VINF_SUCCESS)
382	Opts.fModeClear = RTCHMOD_SET_ALL_MASK;
383	else
384	{
385	pszNext++;
386	if ( pszNext[0] == '0'
387	&& (pszNext[1] == 'x' \|\| pszNext[1] == 'X'))
388	rc = RTStrToUInt32Ex(pszNext, &pszNext, 16, &Opts.fModeClear);
389	else
390	rc = RTStrToUInt32Ex(pszNext, &pszNext, 8, &Opts.fModeClear);
391	if (rc != VINF_SUCCESS)
392	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unable to parse mode mask: %s\n", ValueUnion.psz);
393	Opts.fModeClear &= RTCHMOD_SET_ALL_MASK;
394	}
395
396	rc = RTGetOpt(&GetState, &ValueUnion);
397	}
398
399	/*
400	* No files means error.
401	*/
402	if (rc != VINF_GETOPT_NOT_OPTION)
403	return RTMsgErrorExit(RTEXITCODE_FAILURE, "No directories specified.\n");
404
405	/*
406	* Work thru the specified dirs.
407	*/
408	RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
409	while (rc == VINF_GETOPT_NOT_OPTION)
410	{
411	if (Opts.fRecursive)
412	rc = rtCmdChModRecursive(&Opts, ValueUnion.psz);
413	else
414	rc = rtCmdChModOne(&Opts, ValueUnion.psz);
415	if (RT_FAILURE(rc))
416	rcExit = RTEXITCODE_FAILURE;
417
418	/* next */
419	rc = RTGetOpt(&GetState, &ValueUnion);
420	}
421	if (rc != 0)
422	rcExit = RTGetOptPrintError(rc, &ValueUnion);
423
424	return rcExit;
425	}
426
427
428	int main(int argc, char **argv)
429	{
430	int rc = RTR3InitExe(argc, &argv, 0);
431	if (RT_FAILURE(rc))
432	return RTMsgInitFailure(rc);
433	return RTCmdChMod(argc, argv);
434	}
435

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source: vbox/trunk/src/VBox/Runtime/tools/RTChMod.cpp@ 101592

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