| 1 | /* $Id: fileio2-posix.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - File I/O, POSIX, Part 2.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2019 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_FILE
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| 32 |
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| 33 | #include <errno.h>
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| 34 | #include <sys/stat.h>
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| 35 | #include <sys/types.h>
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| 36 | #ifdef _MSC_VER
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| 37 | # include <io.h>
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| 38 | # include <stdio.h>
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| 39 | #else
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| 40 | # include <unistd.h>
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| 41 | # include <sys/time.h>
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| 42 | #endif
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| 43 | #ifdef RT_OS_LINUX
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| 44 | # include <sys/file.h>
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| 45 | #endif
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| 46 | #if defined(RT_OS_OS2) && (!defined(__INNOTEK_LIBC__) || __INNOTEK_LIBC__ < 0x006)
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| 47 | # include <io.h>
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| 48 | #endif
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| 49 |
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| 50 | #ifdef RT_OS_SOLARIS
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| 51 | # define futimes(filedes, timeval) futimesat(filedes, NULL, timeval)
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| 52 | #endif
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| 53 |
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| 54 | #ifdef RT_OS_HAIKU
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| 55 | # define USE_FUTIMENS
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| 56 | #endif
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| 57 |
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| 58 | #include <iprt/file.h>
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| 59 | #include <iprt/path.h>
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| 60 | #include <iprt/assert.h>
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| 61 | #include <iprt/string.h>
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| 62 | #include <iprt/errcore.h>
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| 63 | #include <iprt/log.h>
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| 64 | #include "internal/file.h"
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| 65 | #include "internal/fs.h"
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| 66 | #include "internal/path.h"
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| 67 |
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| 68 |
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| 69 |
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| 70 | RTR3DECL(int) RTFileQueryInfo(RTFILE hFile, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs)
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| 71 | {
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| 72 | /*
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| 73 | * Validate input.
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| 74 | */
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| 75 | AssertReturn(hFile != NIL_RTFILE, VERR_INVALID_PARAMETER);
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| 76 | AssertPtrReturn(pObjInfo, VERR_INVALID_PARAMETER);
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| 77 | if ( enmAdditionalAttribs < RTFSOBJATTRADD_NOTHING
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| 78 | || enmAdditionalAttribs > RTFSOBJATTRADD_LAST)
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| 79 | {
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| 80 | AssertMsgFailed(("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs));
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| 81 | return VERR_INVALID_PARAMETER;
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| 82 | }
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| 83 |
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| 84 | /*
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| 85 | * Query file info.
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| 86 | */
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| 87 | struct stat Stat;
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| 88 | if (fstat(RTFileToNative(hFile), &Stat))
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| 89 | {
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| 90 | int rc = RTErrConvertFromErrno(errno);
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| 91 | Log(("RTFileQueryInfo(%RTfile,,%d): returns %Rrc\n", hFile, enmAdditionalAttribs, rc));
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| 92 | return rc;
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| 93 | }
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| 94 |
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| 95 | /*
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| 96 | * Setup the returned data.
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| 97 | */
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| 98 | rtFsConvertStatToObjInfo(pObjInfo, &Stat, NULL, 0);
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| 99 |
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| 100 | /*
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| 101 | * Requested attributes (we cannot provide anything actually).
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| 102 | */
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| 103 | switch (enmAdditionalAttribs)
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| 104 | {
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| 105 | case RTFSOBJATTRADD_NOTHING:
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| 106 | case RTFSOBJATTRADD_UNIX:
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| 107 | /* done */
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| 108 | break;
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| 109 |
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| 110 | case RTFSOBJATTRADD_UNIX_OWNER:
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| 111 | rtFsObjInfoAttrSetUnixOwner(pObjInfo, Stat.st_uid);
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| 112 | break;
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| 113 |
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| 114 | case RTFSOBJATTRADD_UNIX_GROUP:
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| 115 | rtFsObjInfoAttrSetUnixGroup(pObjInfo, Stat.st_gid);
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| 116 | break;
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| 117 |
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| 118 | case RTFSOBJATTRADD_EASIZE:
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| 119 | pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE;
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| 120 | pObjInfo->Attr.u.EASize.cb = 0;
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| 121 | break;
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| 122 |
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| 123 | default:
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| 124 | AssertMsgFailed(("Impossible!\n"));
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| 125 | return VERR_INTERNAL_ERROR;
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| 126 | }
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| 127 |
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| 128 | LogFlow(("RTFileQueryInfo(%RTfile,,%d): returns VINF_SUCCESS\n", hFile, enmAdditionalAttribs));
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| 129 | return VINF_SUCCESS;
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| 130 | }
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| 131 |
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| 132 |
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| 133 | RTR3DECL(int) RTFileSetTimes(RTFILE hFile, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
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| 134 | PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
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| 135 | {
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| 136 | NOREF(pChangeTime); NOREF(pBirthTime);
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| 137 |
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| 138 | /*
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| 139 | * We can only set AccessTime and ModificationTime, so if neither
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| 140 | * are specified we can return immediately.
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| 141 | */
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| 142 | if (!pAccessTime && !pModificationTime)
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| 143 | return VINF_SUCCESS;
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| 144 |
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| 145 | #ifdef USE_FUTIMENS
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| 146 | struct timespec aTimespecs[2];
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| 147 | if (pAccessTime && pModificationTime)
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| 148 | {
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| 149 | memcpy(&aTimespecs[0], pAccessTime, sizeof(struct timespec));
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| 150 | memcpy(&aTimespecs[1], pModificationTime, sizeof(struct timespec));
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| 151 | }
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| 152 | else
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| 153 | {
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| 154 | RTFSOBJINFO ObjInfo;
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| 155 | int rc = RTFileQueryInfo(hFile, &ObjInfo, RTFSOBJATTRADD_UNIX);
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| 156 | if (RT_FAILURE(rc))
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| 157 | return rc;
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| 158 | memcpy(&aTimespecs[0], pAccessTime ? pAccessTime : &ObjInfo.AccessTime, sizeof(struct timespec));
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| 159 | memcpy(&aTimespecs[1], pModificationTime ? pModificationTime : &ObjInfo.ModificationTime, sizeof(struct timespec));
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| 160 | }
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| 161 |
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| 162 | if (futimens(RTFileToNative(hFile), aTimespecs))
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| 163 | {
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| 164 | int rc = RTErrConvertFromErrno(errno);
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| 165 | Log(("RTFileSetTimes(%RTfile,%p,%p,,): returns %Rrc\n", hFile, pAccessTime, pModificationTime, rc));
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| 166 | return rc;
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| 167 | }
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| 168 | #else
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| 169 | /*
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| 170 | * Convert the input to timeval, getting the missing one if necessary,
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| 171 | * and call the API which does the change.
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| 172 | */
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| 173 | struct timeval aTimevals[2];
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| 174 | if (pAccessTime && pModificationTime)
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| 175 | {
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| 176 | RTTimeSpecGetTimeval(pAccessTime, &aTimevals[0]);
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| 177 | RTTimeSpecGetTimeval(pModificationTime, &aTimevals[1]);
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| 178 | }
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| 179 | else
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| 180 | {
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| 181 | RTFSOBJINFO ObjInfo;
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| 182 | int rc = RTFileQueryInfo(hFile, &ObjInfo, RTFSOBJATTRADD_UNIX);
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| 183 | if (RT_FAILURE(rc))
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| 184 | return rc;
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| 185 | RTTimeSpecGetTimeval(pAccessTime ? pAccessTime : &ObjInfo.AccessTime, &aTimevals[0]);
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| 186 | RTTimeSpecGetTimeval(pModificationTime ? pModificationTime : &ObjInfo.ModificationTime, &aTimevals[1]);
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| 187 | }
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| 188 |
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| 189 | /* XXX this falls back to utimes("/proc/self/fd/...",...) for older kernels/glibcs and this
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| 190 | * will not work for hardened builds where this directory is owned by root.root and mode 0500 */
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| 191 | if (futimes(RTFileToNative(hFile), aTimevals))
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| 192 | {
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| 193 | int rc = RTErrConvertFromErrno(errno);
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| 194 | Log(("RTFileSetTimes(%RTfile,%p,%p,,): returns %Rrc\n", hFile, pAccessTime, pModificationTime, rc));
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| 195 | return rc;
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| 196 | }
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| 197 | #endif
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| 198 | return VINF_SUCCESS;
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| 199 | }
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| 200 |
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