1 | /* $Id: path2-posix.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Path Manipulation, POSIX, Part 2 - RTPathQueryInfo.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #define LOG_GROUP RTLOGGROUP_PATH
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42 | #include <stdlib.h>
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43 | #include <limits.h>
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44 | #include <errno.h>
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45 | #include <unistd.h>
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46 | #include <sys/stat.h>
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47 | #include <sys/time.h>
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48 | #include <stdio.h>
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49 | #include <sys/types.h>
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50 |
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51 | #include <iprt/path.h>
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52 | #include <iprt/env.h>
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53 | #include <iprt/assert.h>
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54 | #include <iprt/string.h>
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55 | #include <iprt/err.h>
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56 | #include <iprt/log.h>
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57 | #include "internal/path.h"
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58 | #include "internal/process.h"
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59 | #include "internal/fs.h"
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60 |
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61 |
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62 | RTR3DECL(int) RTPathQueryInfo(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs)
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63 | {
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64 | return RTPathQueryInfoEx(pszPath, pObjInfo, enmAdditionalAttribs, RTPATH_F_ON_LINK);
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65 | }
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66 |
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67 |
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68 | RTR3DECL(int) RTPathQueryInfoEx(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs, uint32_t fFlags)
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69 | {
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70 | /*
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71 | * Validate input.
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72 | */
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73 | AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
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74 | AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
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75 | AssertPtrReturn(pObjInfo, VERR_INVALID_POINTER);
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76 | AssertMsgReturn( enmAdditionalAttribs >= RTFSOBJATTRADD_NOTHING
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77 | && enmAdditionalAttribs <= RTFSOBJATTRADD_LAST,
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78 | ("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs),
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79 | VERR_INVALID_PARAMETER);
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80 | AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
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81 |
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82 | /*
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83 | * Convert the filename.
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84 | */
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85 | char const *pszNativePath;
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86 | int rc = rtPathToNative(&pszNativePath, pszPath, NULL);
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87 | if (RT_SUCCESS(rc))
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88 | {
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89 | struct stat Stat;
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90 | if (fFlags & RTPATH_F_FOLLOW_LINK)
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91 | rc = stat(pszNativePath, &Stat);
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92 | else
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93 | rc = lstat(pszNativePath, &Stat); /** @todo how doesn't have lstat again? */
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94 | if (!rc)
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95 | {
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96 | rtFsConvertStatToObjInfo(pObjInfo, &Stat, pszPath, 0);
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97 | switch (enmAdditionalAttribs)
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98 | {
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99 | case RTFSOBJATTRADD_NOTHING:
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100 | case RTFSOBJATTRADD_UNIX:
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101 | Assert(pObjInfo->Attr.enmAdditional == RTFSOBJATTRADD_UNIX);
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102 | break;
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103 |
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104 | case RTFSOBJATTRADD_UNIX_OWNER:
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105 | rtFsObjInfoAttrSetUnixOwner(pObjInfo, Stat.st_uid);
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106 | break;
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107 |
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108 | case RTFSOBJATTRADD_UNIX_GROUP:
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109 | rtFsObjInfoAttrSetUnixGroup(pObjInfo, Stat.st_gid);
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110 | break;
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111 |
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112 | case RTFSOBJATTRADD_EASIZE:
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113 | /** @todo Use SGI extended attribute interface to query EA info. */
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114 | pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE;
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115 | pObjInfo->Attr.u.EASize.cb = 0;
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116 | break;
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117 |
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118 | default:
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119 | AssertMsgFailed(("Impossible!\n"));
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120 | return VERR_INTERNAL_ERROR;
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121 | }
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122 | }
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123 | else
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124 | rc = RTErrConvertFromErrno(errno);
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125 | rtPathFreeNative(pszNativePath, pszPath);
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126 | }
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127 |
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128 | LogFlow(("RTPathQueryInfoEx(%p:{%s}, pObjInfo=%p, %d): returns %Rrc\n",
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129 | pszPath, pszPath, pObjInfo, enmAdditionalAttribs, rc));
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130 | return rc;
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131 | }
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132 |
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133 |
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134 | RTR3DECL(int) RTPathSetTimes(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
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135 | PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
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136 | {
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137 | return RTPathSetTimesEx(pszPath, pAccessTime, pModificationTime, pChangeTime, pBirthTime, RTPATH_F_ON_LINK);
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138 | }
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139 |
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140 |
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141 | RTR3DECL(int) RTPathSetTimesEx(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
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142 | PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime, uint32_t fFlags)
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143 | {
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144 | /*
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145 | * Validate input.
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146 | */
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147 | AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
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148 | AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
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149 | AssertPtrNullReturn(pAccessTime, VERR_INVALID_POINTER);
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150 | AssertPtrNullReturn(pModificationTime, VERR_INVALID_POINTER);
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151 | AssertPtrNullReturn(pChangeTime, VERR_INVALID_POINTER);
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152 | AssertPtrNullReturn(pBirthTime, VERR_INVALID_POINTER);
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153 | AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
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154 |
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155 | /*
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156 | * Convert the paths.
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157 | */
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158 | char const *pszNativePath;
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159 | int rc = rtPathToNative(&pszNativePath, pszPath, NULL);
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160 | if (RT_SUCCESS(rc))
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161 | {
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162 | RTFSOBJINFO ObjInfo;
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163 |
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164 | /*
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165 | * If it's a no-op, we'll only verify the existance of the file.
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166 | */
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167 | if (!pAccessTime && !pModificationTime)
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168 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, fFlags);
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169 | else
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170 | {
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171 | /*
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172 | * Convert the input to timeval, getting the missing one if necessary,
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173 | * and call the API which does the change.
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174 | */
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175 | struct timeval aTimevals[2];
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176 | if (pAccessTime && pModificationTime)
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177 | {
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178 | RTTimeSpecGetTimeval(pAccessTime, &aTimevals[0]);
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179 | RTTimeSpecGetTimeval(pModificationTime, &aTimevals[1]);
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180 | }
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181 | else
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182 | {
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183 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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184 | if (RT_SUCCESS(rc))
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185 | {
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186 | RTTimeSpecGetTimeval(pAccessTime ? pAccessTime : &ObjInfo.AccessTime, &aTimevals[0]);
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187 | RTTimeSpecGetTimeval(pModificationTime ? pModificationTime : &ObjInfo.ModificationTime, &aTimevals[1]);
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188 | }
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189 | else
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190 | Log(("RTPathSetTimes('%s',%p,%p,,): RTPathQueryInfo failed with %Rrc\n",
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191 | pszPath, pAccessTime, pModificationTime, rc));
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192 | }
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193 | if (RT_SUCCESS(rc))
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194 | {
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195 | if (fFlags & RTPATH_F_FOLLOW_LINK)
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196 | {
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197 | if (utimes(pszNativePath, aTimevals))
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198 | rc = RTErrConvertFromErrno(errno);
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199 | }
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200 | #if (defined(RT_OS_DARWIN) && MAC_OS_X_VERSION_MIN_REQUIRED >= 1050) \
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201 | || defined(RT_OS_FREEBSD) \
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202 | || defined(RT_OS_LINUX) \
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203 | || defined(RT_OS_OS2) /** @todo who really has lutimes? */
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204 | else
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205 | {
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206 | if (lutimes(pszNativePath, aTimevals))
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207 | {
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208 | /* If lutimes is not supported (e.g. linux < 2.6.22), try fall back on utimes: */
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209 | if (errno != ENOSYS)
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210 | rc = RTErrConvertFromErrno(errno);
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211 | else
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212 | {
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213 | if (pAccessTime && pModificationTime)
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214 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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215 | if (RT_SUCCESS(rc) && !RTFS_IS_SYMLINK(ObjInfo.Attr.fMode))
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216 | {
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217 | if (utimes(pszNativePath, aTimevals))
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218 | rc = RTErrConvertFromErrno(errno);
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219 | }
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220 | else
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221 | rc = VERR_NOT_SUPPORTED;
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222 | }
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223 | }
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224 | }
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225 | #else
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226 | else
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227 | {
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228 | if (pAccessTime && pModificationTime)
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229 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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230 | if (RT_SUCCESS(rc) && RTFS_IS_SYMLINK(ObjInfo.Attr.fMode))
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231 | rc = VERR_NS_SYMLINK_SET_TIME;
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232 | else if (RT_SUCCESS(rc))
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233 | {
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234 | if (utimes(pszNativePath, aTimevals))
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235 | rc = RTErrConvertFromErrno(errno);
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236 | }
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237 | }
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238 | #endif
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239 | if (RT_FAILURE(rc))
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240 | Log(("RTPathSetTimes('%s',%p,%p,,): failed with %Rrc and errno=%d\n",
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241 | pszPath, pAccessTime, pModificationTime, rc, errno));
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242 | }
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243 | }
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244 | rtPathFreeNative(pszNativePath, pszPath);
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245 | }
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246 |
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247 | LogFlow(("RTPathSetTimes(%p:{%s}, %p:{%RDtimespec}, %p:{%RDtimespec}, %p:{%RDtimespec}, %p:{%RDtimespec}): return %Rrc\n",
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248 | pszPath, pszPath, pAccessTime, pAccessTime, pModificationTime, pModificationTime,
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249 | pChangeTime, pChangeTime, pBirthTime, pBirthTime, rc));
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250 | return rc;
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251 | }
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252 |
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253 |
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254 | RTR3DECL(int) RTPathSetOwner(const char *pszPath, uint32_t uid, uint32_t gid)
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255 | {
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256 | return RTPathSetOwnerEx(pszPath, uid, gid, RTPATH_F_ON_LINK);
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257 | }
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258 |
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259 |
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260 | RTR3DECL(int) RTPathSetOwnerEx(const char *pszPath, uint32_t uid, uint32_t gid, uint32_t fFlags)
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261 | {
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262 | /*
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263 | * Validate input.
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264 | */
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265 | AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
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266 | AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
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267 | AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
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268 | uid_t uidNative = uid != NIL_RTUID ? (uid_t)uid : (uid_t)-1;
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269 | AssertReturn(uid == uidNative, VERR_INVALID_PARAMETER);
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270 | gid_t gidNative = gid != NIL_RTGID ? (gid_t)gid : (uid_t)-1;
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271 | AssertReturn(gid == gidNative, VERR_INVALID_PARAMETER);
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272 |
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273 | /*
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274 | * Convert the path.
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275 | */
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276 | char const *pszNativePath;
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277 | int rc = rtPathToNative(&pszNativePath, pszPath, NULL);
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278 | if (RT_SUCCESS(rc))
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279 | {
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280 | if (fFlags & RTPATH_F_FOLLOW_LINK)
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281 | {
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282 | if (chown(pszNativePath, uidNative, gidNative))
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283 | rc = RTErrConvertFromErrno(errno);
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284 | }
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285 | #if 1
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286 | else
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287 | {
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288 | if (lchown(pszNativePath, uidNative, gidNative))
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289 | rc = RTErrConvertFromErrno(errno);
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290 | }
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291 | #else
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292 | else
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293 | {
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294 | RTFSOBJINFO ObjInfo;
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295 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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296 | if (RT_SUCCESS(rc) && RTFS_IS_SYMLINK(ObjInfo.Attr.fMode))
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297 | rc = VERR_NS_SYMLINK_CHANGE_OWNER;
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298 | else if (RT_SUCCESS(rc))
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299 | {
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300 | if (lchown(pszNativePath, uidNative, gidNative))
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301 | rc = RTErrConvertFromErrno(errno);
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302 | }
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303 | }
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304 | #endif
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305 | if (RT_FAILURE(rc))
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306 | Log(("RTPathSetOwnerEx('%s',%d,%d): failed with %Rrc and errno=%d\n",
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307 | pszPath, uid, gid, rc, errno));
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308 |
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309 | rtPathFreeNative(pszNativePath, pszPath);
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310 | }
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311 |
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312 | LogFlow(("RTPathSetOwnerEx(%p:{%s}, uid=%d, gid=%d): return %Rrc\n",
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313 | pszPath, pszPath, uid, gid, rc));
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314 | return rc;
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315 | }
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316 |
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