VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/posix/fileio2-posix.cpp@ 103795

Last change on this file since 103795 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.

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1/* $Id: fileio2-posix.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT - File I/O, POSIX, Part 2.
4 */
5
6/*
7 * Copyright (C) 2006-2023 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#define LOG_GROUP RTLOGGROUP_FILE
42
43#include <errno.h>
44#include <sys/stat.h>
45#include <sys/types.h>
46#ifdef _MSC_VER
47# include <io.h>
48# include <stdio.h>
49#else
50# include <unistd.h>
51# include <sys/time.h>
52#endif
53#ifdef RT_OS_LINUX
54# include <sys/file.h>
55#endif
56#if defined(RT_OS_OS2) && (!defined(__INNOTEK_LIBC__) || __INNOTEK_LIBC__ < 0x006)
57# include <io.h>
58#endif
59
60#ifdef RT_OS_SOLARIS
61# define futimes(filedes, timeval) futimesat(filedes, NULL, timeval)
62#endif
63
64#ifdef RT_OS_HAIKU
65# define USE_FUTIMENS
66#endif
67
68#include <iprt/file.h>
69#include <iprt/path.h>
70#include <iprt/assert.h>
71#include <iprt/string.h>
72#include <iprt/errcore.h>
73#include <iprt/log.h>
74#include "internal/file.h"
75#include "internal/fs.h"
76#include "internal/path.h"
77
78
79
80RTR3DECL(int) RTFileQueryInfo(RTFILE hFile, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs)
81{
82 /*
83 * Validate input.
84 */
85 AssertReturn(hFile != NIL_RTFILE, VERR_INVALID_PARAMETER);
86 AssertPtrReturn(pObjInfo, VERR_INVALID_PARAMETER);
87 if ( enmAdditionalAttribs < RTFSOBJATTRADD_NOTHING
88 || enmAdditionalAttribs > RTFSOBJATTRADD_LAST)
89 {
90 AssertMsgFailed(("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs));
91 return VERR_INVALID_PARAMETER;
92 }
93
94 /*
95 * Query file info.
96 */
97 struct stat Stat;
98 if (fstat(RTFileToNative(hFile), &Stat))
99 {
100 int rc = RTErrConvertFromErrno(errno);
101 Log(("RTFileQueryInfo(%RTfile,,%d): returns %Rrc\n", hFile, enmAdditionalAttribs, rc));
102 return rc;
103 }
104
105 /*
106 * Setup the returned data.
107 */
108 rtFsConvertStatToObjInfo(pObjInfo, &Stat, NULL, 0);
109
110 /*
111 * Requested attributes (we cannot provide anything actually).
112 */
113 switch (enmAdditionalAttribs)
114 {
115 case RTFSOBJATTRADD_NOTHING:
116 case RTFSOBJATTRADD_UNIX:
117 /* done */
118 break;
119
120 case RTFSOBJATTRADD_UNIX_OWNER:
121 rtFsObjInfoAttrSetUnixOwner(pObjInfo, Stat.st_uid);
122 break;
123
124 case RTFSOBJATTRADD_UNIX_GROUP:
125 rtFsObjInfoAttrSetUnixGroup(pObjInfo, Stat.st_gid);
126 break;
127
128 case RTFSOBJATTRADD_EASIZE:
129 pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE;
130 pObjInfo->Attr.u.EASize.cb = 0;
131 break;
132
133 default:
134 AssertMsgFailed(("Impossible!\n"));
135 return VERR_INTERNAL_ERROR;
136 }
137
138 LogFlow(("RTFileQueryInfo(%RTfile,,%d): returns VINF_SUCCESS\n", hFile, enmAdditionalAttribs));
139 return VINF_SUCCESS;
140}
141
142
143RTR3DECL(int) RTFileSetTimes(RTFILE hFile, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
144 PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
145{
146 NOREF(pChangeTime); NOREF(pBirthTime);
147
148 /*
149 * We can only set AccessTime and ModificationTime, so if neither
150 * are specified we can return immediately.
151 */
152 if (!pAccessTime && !pModificationTime)
153 return VINF_SUCCESS;
154
155#ifdef USE_FUTIMENS
156 struct timespec aTimespecs[2];
157 if (pAccessTime && pModificationTime)
158 {
159 memcpy(&aTimespecs[0], pAccessTime, sizeof(struct timespec));
160 memcpy(&aTimespecs[1], pModificationTime, sizeof(struct timespec));
161 }
162 else
163 {
164 RTFSOBJINFO ObjInfo;
165 int rc = RTFileQueryInfo(hFile, &ObjInfo, RTFSOBJATTRADD_UNIX);
166 if (RT_FAILURE(rc))
167 return rc;
168 memcpy(&aTimespecs[0], pAccessTime ? pAccessTime : &ObjInfo.AccessTime, sizeof(struct timespec));
169 memcpy(&aTimespecs[1], pModificationTime ? pModificationTime : &ObjInfo.ModificationTime, sizeof(struct timespec));
170 }
171
172 if (futimens(RTFileToNative(hFile), aTimespecs))
173 {
174 int rc = RTErrConvertFromErrno(errno);
175 Log(("RTFileSetTimes(%RTfile,%p,%p,,): returns %Rrc\n", hFile, pAccessTime, pModificationTime, rc));
176 return rc;
177 }
178#else
179 /*
180 * Convert the input to timeval, getting the missing one if necessary,
181 * and call the API which does the change.
182 */
183 struct timeval aTimevals[2];
184 if (pAccessTime && pModificationTime)
185 {
186 RTTimeSpecGetTimeval(pAccessTime, &aTimevals[0]);
187 RTTimeSpecGetTimeval(pModificationTime, &aTimevals[1]);
188 }
189 else
190 {
191 RTFSOBJINFO ObjInfo;
192 int rc = RTFileQueryInfo(hFile, &ObjInfo, RTFSOBJATTRADD_UNIX);
193 if (RT_FAILURE(rc))
194 return rc;
195 RTTimeSpecGetTimeval(pAccessTime ? pAccessTime : &ObjInfo.AccessTime, &aTimevals[0]);
196 RTTimeSpecGetTimeval(pModificationTime ? pModificationTime : &ObjInfo.ModificationTime, &aTimevals[1]);
197 }
198
199 /* XXX this falls back to utimes("/proc/self/fd/...",...) for older kernels/glibcs and this
200 * will not work for hardened builds where this directory is owned by root.root and mode 0500 */
201 if (futimes(RTFileToNative(hFile), aTimevals))
202 {
203 int rc = RTErrConvertFromErrno(errno);
204 Log(("RTFileSetTimes(%RTfile,%p,%p,,): returns %Rrc\n", hFile, pAccessTime, pModificationTime, rc));
205 return rc;
206 }
207#endif
208 return VINF_SUCCESS;
209}
210
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