1 | /* $Id: tstFile.cpp 76452 2018-12-25 01:41:25Z vboxsync $ */
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2 | /** @file
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3 | * IPRT Testcase - File I/O.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2017 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 | #include <iprt/file.h>
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32 | #include <iprt/errcore.h>
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33 | #include <iprt/string.h>
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34 | #include <iprt/stream.h>
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35 | #include <iprt/initterm.h>
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36 |
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37 |
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38 | int main()
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39 | {
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40 | int cErrors = 0;
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41 | RTPrintf("tstFile: TESTING\n");
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42 | RTR3InitExeNoArguments(0);
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43 |
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44 | RTFILE File;
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45 | int rc = RTFileOpen(&File, "tstFile#1.tst", RTFILE_O_READWRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_DENY_NONE);
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46 | if (RT_FAILURE(rc))
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47 | {
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48 | RTPrintf("tstFile: FATAL ERROR - Failed to open file #1. rc=%Rrc\n", rc);
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49 | return 1;
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50 | }
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51 |
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52 | RTFOFF cbMax = -2;
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53 | rc = RTFileGetMaxSizeEx(File, &cbMax);
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54 | if (RT_FAILURE(rc))
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55 | {
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56 | RTPrintf("tstFile: RTFileGetMaxSizeEx failed: %Rrc\n", rc);
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57 | cErrors++;
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58 | }
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59 | else if (cbMax <= 0)
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60 | {
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61 | RTPrintf("tstFile: RTFileGetMaxSizeEx failed: cbMax=%RTfoff\n", cbMax);
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62 | cErrors++;
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63 | }
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64 | else if (RTFileGetMaxSize(File) != cbMax)
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65 | {
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66 | RTPrintf("tstFile: RTFileGetMaxSize failed; returns %RTfoff instead of %RTfoff\n", RTFileGetMaxSize(File), cbMax);
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67 | cErrors++;
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68 | }
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69 | else
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70 | RTPrintf("Maximum file size is %RTfoff bytes.\n", cbMax);
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71 |
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72 | /* grow file beyond 2G */
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73 | rc = RTFileSetSize(File, _2G + _1M);
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74 | if (RT_FAILURE(rc))
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75 | {
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76 | RTPrintf("Failed to grow file #1 to 2.001GB. rc=%Rrc\n", rc);
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77 | cErrors++;
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78 | }
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79 | else
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80 | {
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81 | uint64_t cb;
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82 | rc = RTFileGetSize(File, &cb);
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83 | if (RT_FAILURE(rc))
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84 | {
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85 | RTPrintf("Failed to get file size of #1. rc=%Rrc\n", rc);
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86 | cErrors++;
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87 | }
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88 | else if (cb != _2G + _1M)
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89 | {
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90 | RTPrintf("RTFileGetSize return %RX64 bytes, expected %RX64.\n", cb, _2G + _1M);
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91 | cErrors++;
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92 | }
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93 | else
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94 | RTPrintf("tstFile: cb=%RX64\n", cb);
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95 |
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96 | /*
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97 | * Try some writes at the beginning of the file.
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98 | */
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99 | uint64_t offFile = RTFileTell(File);
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100 | if (offFile != 0)
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101 | {
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102 | RTPrintf("RTFileTell -> %#RX64, expected 0 (#1)\n", offFile);
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103 | cErrors++;
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104 | }
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105 | static const char szTestBuf[] = "Sausages and bacon for breakfast again!";
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106 | size_t cbWritten = 0;
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107 | while (cbWritten < sizeof(szTestBuf))
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108 | {
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109 | size_t cbWrittenPart;
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110 | rc = RTFileWrite(File, &szTestBuf[cbWritten], sizeof(szTestBuf) - cbWritten, &cbWrittenPart);
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111 | if (RT_FAILURE(rc))
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112 | break;
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113 | cbWritten += cbWrittenPart;
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114 | }
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115 | if (RT_FAILURE(rc))
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116 | {
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117 | RTPrintf("Failed to write to file #1 at offset 0. rc=%Rrc\n", rc);
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118 | cErrors++;
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119 | }
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120 | else
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121 | {
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122 | /* check that it was written correctly. */
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123 | rc = RTFileSeek(File, 0, RTFILE_SEEK_BEGIN, NULL);
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124 | if (RT_FAILURE(rc))
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125 | {
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126 | RTPrintf("Failed to seek offset 0 in file #1. rc=%Rrc\n", rc);
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127 | cErrors++;
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128 | }
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129 | else
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130 | {
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131 | char szReadBuf[sizeof(szTestBuf)];
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132 | size_t cbRead = 0;
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133 | while (cbRead < sizeof(szTestBuf))
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134 | {
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135 | size_t cbReadPart;
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136 | rc = RTFileRead(File, &szReadBuf[cbRead], sizeof(szTestBuf) - cbRead, &cbReadPart);
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137 | if (RT_FAILURE(rc))
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138 | break;
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139 | cbRead += cbReadPart;
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140 | }
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141 | if (RT_FAILURE(rc))
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142 | {
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143 | RTPrintf("Failed to read from file #1 at offset 0. rc=%Rrc\n", rc);
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144 | cErrors++;
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145 | }
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146 | else
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147 | {
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148 | if (!memcmp(szReadBuf, szTestBuf, sizeof(szTestBuf)))
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149 | RTPrintf("tstFile: head write ok\n");
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150 | else
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151 | {
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152 | RTPrintf("Data read from file #1 at offset 0 differs from what we wrote there.\n");
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153 | cErrors++;
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154 | }
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155 | }
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156 | }
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157 | }
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158 |
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159 | /*
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160 | * Try some writes at the end of the file.
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161 | */
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162 | rc = RTFileSeek(File, _2G + _1M, RTFILE_SEEK_BEGIN, NULL);
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163 | if (RT_FAILURE(rc))
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164 | {
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165 | RTPrintf("Failed to seek to _2G + _1M in file #1. rc=%Rrc\n", rc);
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166 | cErrors++;
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167 | }
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168 | else
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169 | {
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170 | offFile = RTFileTell(File);
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171 | if (offFile != _2G + _1M)
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172 | {
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173 | RTPrintf("RTFileTell -> %#llx, expected %#llx (#2)\n", offFile, _2G + _1M);
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174 | cErrors++;
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175 | }
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176 | else
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177 | {
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178 | cbWritten = 0;
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179 | while (cbWritten < sizeof(szTestBuf))
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180 | {
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181 | size_t cbWrittenPart;
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182 | rc = RTFileWrite(File, &szTestBuf[cbWritten], sizeof(szTestBuf) - cbWritten, &cbWrittenPart);
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183 | if (RT_FAILURE(rc))
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184 | break;
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185 | cbWritten += cbWrittenPart;
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186 | }
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187 | if (RT_FAILURE(rc))
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188 | {
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189 | RTPrintf("Failed to write to file #1 at offset 2G + 1M. rc=%Rrc\n", rc);
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190 | cErrors++;
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191 | }
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192 | else
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193 | {
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194 | rc = RTFileSeek(File, offFile, RTFILE_SEEK_BEGIN, NULL);
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195 | if (RT_FAILURE(rc))
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196 | {
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197 | RTPrintf("Failed to seek offset %RX64 in file #1. rc=%Rrc\n", offFile, rc);
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198 | cErrors++;
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199 | }
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200 | else
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201 | {
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202 | char szReadBuf[sizeof(szTestBuf)];
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203 | size_t cbRead = 0;
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204 | while (cbRead < sizeof(szTestBuf))
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205 | {
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206 | size_t cbReadPart;
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207 | rc = RTFileRead(File, &szReadBuf[cbRead], sizeof(szTestBuf) - cbRead, &cbReadPart);
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208 | if (RT_FAILURE(rc))
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209 | break;
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210 | cbRead += cbReadPart;
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211 | }
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212 | if (RT_FAILURE(rc))
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213 | {
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214 | RTPrintf("Failed to read from file #1 at offset 2G + 1M. rc=%Rrc\n", rc);
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215 | cErrors++;
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216 | }
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217 | else
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218 | {
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219 | if (!memcmp(szReadBuf, szTestBuf, sizeof(szTestBuf)))
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220 | RTPrintf("tstFile: tail write ok\n");
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221 | else
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222 | {
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223 | RTPrintf("Data read from file #1 at offset 2G + 1M differs from what we wrote there.\n");
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224 | cErrors++;
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225 | }
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226 | }
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227 | }
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228 | }
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229 | }
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230 | }
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231 |
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232 | /*
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233 | * Some general seeking around.
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234 | */
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235 | rc = RTFileSeek(File, _2G + 1, RTFILE_SEEK_BEGIN, NULL);
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236 | if (RT_FAILURE(rc))
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237 | {
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238 | RTPrintf("Failed to seek to _2G + 1 in file #1. rc=%Rrc\n", rc);
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239 | cErrors++;
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240 | }
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241 | else
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242 | {
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243 | offFile = RTFileTell(File);
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244 | if (offFile != _2G + 1)
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245 | {
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246 | RTPrintf("RTFileTell -> %#llx, expected %#llx (#3)\n", offFile, _2G + 1);
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247 | cErrors++;
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248 | }
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249 | }
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250 |
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251 | /* seek end */
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252 | rc = RTFileSeek(File, 0, RTFILE_SEEK_END, NULL);
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253 | if (RT_FAILURE(rc))
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254 | {
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255 | RTPrintf("Failed to seek to end of file #1. rc=%Rrc\n", rc);
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256 | cErrors++;
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257 | }
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258 | else
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259 | {
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260 | offFile = RTFileTell(File);
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261 | if (offFile != _2G + _1M + sizeof(szTestBuf)) /* assuming tail write was ok. */
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262 | {
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263 | RTPrintf("RTFileTell -> %#RX64, expected %#RX64 (#4)\n", offFile, _2G + _1M + sizeof(szTestBuf));
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264 | cErrors++;
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265 | }
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266 | }
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267 |
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268 | /* seek start */
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269 | rc = RTFileSeek(File, 0, RTFILE_SEEK_BEGIN, NULL);
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270 | if (RT_FAILURE(rc))
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271 | {
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272 | RTPrintf("Failed to seek to end of file #1. rc=%Rrc\n", rc);
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273 | cErrors++;
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274 | }
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275 | else
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276 | {
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277 | offFile = RTFileTell(File);
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278 | if (offFile != 0)
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279 | {
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280 | RTPrintf("RTFileTell -> %#llx, expected 0 (#5)\n", offFile);
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281 | cErrors++;
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282 | }
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283 | }
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284 | }
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285 |
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286 |
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287 | /*
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288 | * Cleanup.
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289 | */
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290 | rc = RTFileClose(File);
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291 | if (RT_FAILURE(rc))
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292 | {
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293 | RTPrintf("Failed to close file #1. rc=%Rrc\n", rc);
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294 | cErrors++;
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295 | }
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296 | rc = RTFileDelete("tstFile#1.tst");
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297 | if (RT_FAILURE(rc))
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298 | {
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299 | RTPrintf("Failed to delete file #1. rc=%Rrc\n", rc);
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300 | cErrors++;
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301 | }
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302 |
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303 | /*
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304 | * Summary
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305 | */
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306 | if (cErrors == 0)
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307 | RTPrintf("tstFile: SUCCESS\n");
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308 | else
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309 | RTPrintf("tstFile: FAILURE - %d errors\n", cErrors);
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310 | return !!cErrors;
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311 | }
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312 |
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