RTChMod.cpp@ 82968

Last change on this file since 82968 was 82968, checked in by vboxsync, 5 years ago
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1	/* $Id: RTChMod.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* IPRT - Changes the mode/attributes of a file system object.
4	*/
5
6	/*
7	* Copyright (C) 2013-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include <iprt/buildconfig.h>
32	#include <iprt/errcore.h>
33	#include <iprt/file.h>
34	#include <iprt/getopt.h>
35	#include <iprt/initterm.h>
36	#include <iprt/message.h>
37	#include <iprt/path.h>
38	#include <iprt/stream.h>
39	#include <iprt/string.h>
40	#include <iprt/vfs.h>
41
42
43	/*********************************************************************************************************************************
44	* Defined Constants And Macros *
45	*********************************************************************************************************************************/
46	/** What to clear we all bits are being set. */
47	#define RTCHMOD_SET_ALL_MASK (~( RTFS_TYPE_MASK \
48	\| RTFS_DOS_NT_ENCRYPTED \
49	\| RTFS_DOS_NT_COMPRESSED \
50	\| RTFS_DOS_NT_REPARSE_POINT \
51	\| RTFS_DOS_NT_SPARSE_FILE \
52	\| RTFS_DOS_NT_DEVICE \
53	\| RTFS_DOS_DIRECTORY))
54
55
56	/*********************************************************************************************************************************
57	* Structures and Typedefs *
58	*********************************************************************************************************************************/
59	typedef enum RTCMDCHMODNOISE
60	{
61	kRTCmdChModNoise_Quiet,
62	kRTCmdChModNoise_Default,
63	kRTCmdChModNoise_Changes,
64	kRTCmdChModNoise_Verbose
65	} RTCMDCHMODNOISE;
66
67
68	typedef struct RTCMDCHMODOPTS
69	{
70	/** The noise level. */
71	RTCMDCHMODNOISE enmNoiseLevel;
72	/** -R, --recursive */
73	bool fRecursive;
74	/** --preserve-root / --no-preserve-root (don't allow recursion from root). */
75	bool fPreserveRoot;
76	/** Whether to always use the VFS chain API (for testing). */
77	bool fAlwaysUseChainApi;
78	/** Which mode bits to set. */
79	RTFMODE fModeSet;
80	/** Which mode bits to clear. */
81	RTFMODE fModeClear;
82	} RTCMDCHMODOPTS;
83
84
85
86	/**
87	* Calculates the new file mode.
88	*
89	* @returns New mode mask.
90	* @param pOpts The chmod options.
91	* @param fMode The current file mode.
92	*/
93	static RTFMODE rtCmdMkModCalcNewMode(RTCMDCHMODOPTS const *pOpts, RTFMODE fMode)
94	{
95	fMode &= ~pOpts->fModeClear;
96	fMode \|= pOpts->fModeSet;
97	/** @todo do 'X' */
98	return fMode;
99	}
100
101
102	/**
103	* Changes the file mode of one file system object.
104	*
105	* @returns exit code
106	* @param pOpts The chmod options.
107	* @param pszPath The path to the file system object to change the
108	* file mode of.
109	*/
110	static RTEXITCODE rtCmdChModOne(RTCMDCHMODOPTS const pOpts, const char pszPath)
111	{
112	int rc;
113	RTFSOBJINFO ObjInfo;
114	bool fChanges = false;
115	if (!pOpts->fAlwaysUseChainApi && !RTVfsChainIsSpec(pszPath) )
116	{
117	rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK);
118	if (RT_SUCCESS(rc))
119	{
120	RTFMODE fNewMode = rtCmdMkModCalcNewMode(pOpts, ObjInfo.Attr.fMode);
121	fChanges = fNewMode != ObjInfo.Attr.fMode;
122	if (fChanges)
123	{
124	rc = RTPathSetMode(pszPath, fNewMode);
125	if (RT_FAILURE(rc))
126	RTMsgError("RTPathSetMode failed on '%s' with fNewMode=%#x: %Rrc", pszPath, fNewMode, rc);
127	}
128	}
129	else
130	RTMsgError("RTPathQueryInfoEx failed on '%s': %Rrc", pszPath, rc);
131	}
132	else
133	{
134	RTVFSOBJ hVfsObj;
135	uint32_t offError;
136	RTERRINFOSTATIC ErrInfo;
137	rc = RTVfsChainOpenObj(pszPath, RTFILE_O_ACCESS_ATTR_READWRITE \| RTFILE_O_DENY_NONE \| RTFILE_O_OPEN,
138	RTVFSOBJ_F_OPEN_ANY \| RTVFSOBJ_F_CREATE_NOTHING \| RTPATH_F_FOLLOW_LINK,
139	&hVfsObj, &offError, RTErrInfoInitStatic(&ErrInfo));
140	if (RT_SUCCESS(rc))
141	{
142	rc = RTVfsObjQueryInfo(hVfsObj, &ObjInfo, RTFSOBJATTRADD_NOTHING);
143	if (RT_SUCCESS(rc))
144	{
145	RTFMODE fNewMode = rtCmdMkModCalcNewMode(pOpts, ObjInfo.Attr.fMode);
146	fChanges = fNewMode != ObjInfo.Attr.fMode;
147	if (fChanges)
148	{
149	rc = RTVfsObjSetMode(hVfsObj, fNewMode, RTCHMOD_SET_ALL_MASK);
150	if (RT_FAILURE(rc))
151	RTMsgError("RTVfsObjSetMode failed on '%s' with fNewMode=%#x: %Rrc", pszPath, fNewMode, rc);
152	}
153	}
154	else
155	RTVfsChainMsgError("RTVfsObjQueryInfo", pszPath, rc, offError, &ErrInfo.Core);
156	RTVfsObjRelease(hVfsObj);
157	}
158	else
159	RTVfsChainMsgError("RTVfsChainOpenObject", pszPath, rc, offError, &ErrInfo.Core);
160	}
161
162	if (RT_SUCCESS(rc))
163	{
164	if (pOpts->enmNoiseLevel >= (fChanges ? kRTCmdChModNoise_Changes : kRTCmdChModNoise_Verbose))
165	RTPrintf("%s\n", pszPath);
166	return RTEXITCODE_SUCCESS;
167	}
168	return RTEXITCODE_FAILURE;
169	}
170
171
172	/**
173	* Recursively changes the file mode.
174	*
175	* @returns exit code
176	* @param pOpts The mkdir option.
177	* @param pszPath The path to start changing the mode of.
178	*/
179	static int rtCmdChModRecursive(RTCMDCHMODOPTS const pOpts, const char pszPath)
180	{
181	/*
182	* Check if it's a directory first. If not, join the non-recursive code.
183	*/
184	int rc;
185	uint32_t offError;
186	RTFSOBJINFO ObjInfo;
187	RTERRINFOSTATIC ErrInfo;
188	bool const fUseChainApi = pOpts->fAlwaysUseChainApi \|\| RTVfsChainIsSpec(pszPath);
189	if (!fUseChainApi)
190	{
191	rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK);
192	if (RT_FAILURE(rc))
193	return RTMsgErrorExitFailure("RTPathQueryInfoEx failed on '%s': %Rrc", pszPath, rc);
194	}
195	else
196	{
197	rc = RTVfsChainQueryInfo(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK,
198	&offError, RTErrInfoInitStatic(&ErrInfo));
199	if (RT_FAILURE(rc))
200	return RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", pszPath, rc, offError, &ErrInfo.Core);
201	}
202
203	if (!RTFS_IS_DIRECTORY(ObjInfo.Attr.fMode))
204	{
205	/*
206	* Don't bother redoing the above work if its not necessary.
207	*/
208	RTFMODE fNewMode = rtCmdMkModCalcNewMode(pOpts, ObjInfo.Attr.fMode);
209	if (fNewMode != ObjInfo.Attr.fMode)
210	return rtCmdChModOne(pOpts, pszPath);
211	if (pOpts->enmNoiseLevel >= kRTCmdChModNoise_Verbose)
212	RTPrintf("%s\n", pszPath);
213	return RTEXITCODE_SUCCESS;
214	}
215
216	/*
217	* For recursion we always use the VFS layer.
218	*/
219	RTVFSDIR hVfsDir;
220	if (!fUseChainApi)
221	{
222	rc = RTVfsDirOpenNormal(pszPath, 0 /** @todo write attrib flag*/, &hVfsDir);
223	if (RT_FAILURE(rc))
224	return RTMsgErrorExitFailure("RTVfsDirOpenNormal failed on '%s': %Rrc", pszPath, rc);
225	}
226	else
227	{
228	rc = RTVfsChainOpenDir(pszPath, 0 /** @todo write attrib flag*/, &hVfsDir, &offError, RTErrInfoInitStatic(&ErrInfo));
229	if (RT_FAILURE(rc))
230	return RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", pszPath, rc, offError, &ErrInfo.Core);
231	}
232
233	RTMsgError("Recursion is not yet implemented\n");
234	RTVfsDirRelease(hVfsDir);
235	rc = VERR_NOT_IMPLEMENTED;
236
237	return RT_SUCCESS(rc) ? RTEXITCODE_SUCCESS : RTEXITCODE_FAILURE;
238	}
239
240
241	static RTEXITCODE RTCmdChMod(unsigned cArgs, char **papszArgs)
242	{
243	/*
244	* Parse the command line.
245	*/
246	static const RTGETOPTDEF s_aOptions[] =
247	{
248	/* operations */
249	{ "--recursive", 'R', RTGETOPT_REQ_NOTHING },
250	{ "--preserve-root", 'x', RTGETOPT_REQ_NOTHING },
251	{ "--no-preserve-root", 'X', RTGETOPT_REQ_NOTHING },
252	{ "--changes", 'c', RTGETOPT_REQ_NOTHING },
253	{ "--quiet", 'f', RTGETOPT_REQ_NOTHING },
254	{ "--silent", 'f', RTGETOPT_REQ_NOTHING },
255	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
256	{ "--reference", 'Z', RTGETOPT_REQ_NOTHING },
257	{ "--always-use-vfs-chain-api", 'A', RTGETOPT_REQ_NOTHING },
258
259	};
260
261	RTGETOPTSTATE GetState;
262	int rc = RTGetOptInit(&GetState, cArgs, papszArgs, s_aOptions, RT_ELEMENTS(s_aOptions), 1,
263	RTGETOPTINIT_FLAGS_OPTS_FIRST);
264	if (RT_FAILURE(rc))
265	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTGetOpt failed: %Rrc", rc);
266
267	RTCMDCHMODOPTS Opts;
268	Opts.enmNoiseLevel = kRTCmdChModNoise_Default;
269	Opts.fPreserveRoot = false;
270	Opts.fRecursive = false;
271	Opts.fAlwaysUseChainApi = false;
272	Opts.fModeClear = 0;
273	Opts.fModeSet = 0;
274
275	RTGETOPTUNION ValueUnion;
276	while ( (rc = RTGetOpt(&GetState, &ValueUnion)) != 0
277	&& rc != VINF_GETOPT_NOT_OPTION)
278	{
279	switch (rc)
280	{
281	case 'R':
282	Opts.fRecursive = true;
283	break;
284
285	case 'x':
286	Opts.fPreserveRoot = true;
287	break;
288	case 'X':
289	Opts.fPreserveRoot = false;
290	break;
291
292	case 'f':
293	Opts.enmNoiseLevel = kRTCmdChModNoise_Quiet;
294	break;
295	case 'c':
296	Opts.enmNoiseLevel = kRTCmdChModNoise_Changes;
297	break;
298	case 'v':
299	Opts.enmNoiseLevel = kRTCmdChModNoise_Verbose;
300	break;
301
302	case 'Z':
303	{
304	RTFSOBJINFO ObjInfo;
305	RTERRINFOSTATIC ErrInfo;
306	uint32_t offError;
307	rc = RTVfsChainQueryInfo(ValueUnion.psz, &ObjInfo,RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK,
308	&offError, RTErrInfoInitStatic(&ErrInfo));
309	if (RT_FAILURE(rc))
310	return RTVfsChainMsgErrorExitFailure("RTVfsChainQueryInfo", ValueUnion.psz, rc, offError, &ErrInfo.Core);
311	Opts.fModeClear = RTCHMOD_SET_ALL_MASK;
312	Opts.fModeSet = ObjInfo.Attr.fMode & RTCHMOD_SET_ALL_MASK;
313	break;
314	}
315
316	case 'A':
317	Opts.fAlwaysUseChainApi = true;
318	break;
319
320	case 'h':
321	RTPrintf("Usage: %s [options] <mode> <file> [..]\n"
322	"\n"
323	"Options:\n"
324	" -f, --silent, --quiet\n"
325	" -c, --changes\n"
326	" -v, --verbose\n"
327	" Noise level selection.\n"
328	" -R, --recursive\n"
329	" Recurse into directories.\n"
330	" --preserve-root, --no-preserve-root\n"
331	" Whether to allow recursion from the root (default: yes).\n"
332	" --reference <file>\n"
333	" Take mode mask to use from <file> instead of <mode>.\n"
334	"\n"
335	"The <mode> part isn't fully implemented, so only numerical octal notation\n"
336	"works. Prefix the number(s) with 0x to use hexadecimal. There are two forms\n"
337	"of the numerical notation: <SET> and <SET>:<CLEAR>\n"
338	, papszArgs[0]);
339	return RTEXITCODE_SUCCESS;
340
341	case 'V':
342	RTPrintf("%sr%d\n", RTBldCfgVersion(), RTBldCfgRevision());
343	return RTEXITCODE_SUCCESS;
344
345	default:
346
347	return RTGetOptPrintError(rc, &ValueUnion);
348	}
349	}
350
351	/*
352	* The MODE.
353	*/
354	if ( Opts.fModeClear == 0
355	&& Opts.fModeSet == 0)
356	{
357	if (rc != VINF_GETOPT_NOT_OPTION)
358	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "No mode change specified.\n");
359
360	char *pszNext;
361	if ( ValueUnion.psz[0] == '0'
362	&& (ValueUnion.psz[1] == 'x' \|\| ValueUnion.psz[1] == 'X'))
363	rc = RTStrToUInt32Ex(ValueUnion.psz, &pszNext, 16, &Opts.fModeSet);
364	else
365	rc = RTStrToUInt32Ex(ValueUnion.psz, &pszNext, 8, &Opts.fModeSet);
366	if ( rc != VINF_SUCCESS
367	&& (rc != VWRN_TRAILING_CHARS \|\| *pszNext != ':'))
368	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unable to parse mode mask: %s\n", ValueUnion.psz);
369	Opts.fModeSet &= RTCHMOD_SET_ALL_MASK;
370
371	if (rc == VINF_SUCCESS)
372	Opts.fModeClear = RTCHMOD_SET_ALL_MASK;
373	else
374	{
375	pszNext++;
376	if ( pszNext[0] == '0'
377	&& (pszNext[1] == 'x' \|\| pszNext[1] == 'X'))
378	rc = RTStrToUInt32Ex(pszNext, &pszNext, 16, &Opts.fModeClear);
379	else
380	rc = RTStrToUInt32Ex(pszNext, &pszNext, 8, &Opts.fModeClear);
381	if (rc != VINF_SUCCESS)
382	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unable to parse mode mask: %s\n", ValueUnion.psz);
383	Opts.fModeClear &= RTCHMOD_SET_ALL_MASK;
384	}
385
386	rc = RTGetOpt(&GetState, &ValueUnion);
387	}
388
389	/*
390	* No files means error.
391	*/
392	if (rc != VINF_GETOPT_NOT_OPTION)
393	return RTMsgErrorExit(RTEXITCODE_FAILURE, "No directories specified.\n");
394
395	/*
396	* Work thru the specified dirs.
397	*/
398	RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
399	while (rc == VINF_GETOPT_NOT_OPTION)
400	{
401	if (Opts.fRecursive)
402	rc = rtCmdChModRecursive(&Opts, ValueUnion.psz);
403	else
404	rc = rtCmdChModOne(&Opts, ValueUnion.psz);
405	if (RT_FAILURE(rc))
406	rcExit = RTEXITCODE_FAILURE;
407
408	/* next */
409	rc = RTGetOpt(&GetState, &ValueUnion);
410	}
411	if (rc != 0)
412	rcExit = RTGetOptPrintError(rc, &ValueUnion);
413
414	return rcExit;
415	}
416
417
418	int main(int argc, char **argv)
419	{
420	int rc = RTR3InitExe(argc, &argv, 0);
421	if (RT_FAILURE(rc))
422	return RTMsgInitFailure(rc);
423	return RTCmdChMod(argc, argv);
424	}
425

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source: vbox/trunk/src/VBox/Runtime/tools/RTChMod.cpp@ 82968

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