1 | /* $Id: vfsprogress.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Virtual File System, progress filter for files.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2010-2019 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 | #include <iprt/vfs.h>
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32 | #include <iprt/vfslowlevel.h>
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33 |
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34 | #include <iprt/assert.h>
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35 | #include <iprt/errcore.h>
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36 | #include <iprt/file.h>
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37 | #include <iprt/poll.h>
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38 | #include <iprt/string.h>
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39 | #include <iprt/thread.h>
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40 |
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41 |
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42 | /*********************************************************************************************************************************
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43 | * Structures and Typedefs *
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44 | *********************************************************************************************************************************/
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45 | /**
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46 | * Private data of a standard file.
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47 | */
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48 | typedef struct RTVFSPROGRESSFILE
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49 | {
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50 | /** This is negative (RT_FAILURE) if canceled. */
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51 | int rcCanceled;
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52 | /** RTVFSPROGRESS_F_XXX. */
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53 | uint32_t fFlags;
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54 | /** Progress callback. */
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55 | PFNRTPROGRESS pfnProgress;
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56 | /** User argument for the callback. */
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57 | void *pvUser;
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58 | /** The I/O stream handle. */
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59 | RTVFSIOSTREAM hVfsIos;
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60 | /** The file handle. NIL_RTFILE if a pure I/O stream. */
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61 | RTVFSFILE hVfsFile;
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62 | /** Total number of bytes expected to be read and written. */
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63 | uint64_t cbExpected;
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64 | /** The number of bytes expected to be read. */
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65 | uint64_t cbExpectedRead;
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66 | /** The number of bytes expected to be written. */
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67 | uint64_t cbExpectedWritten;
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68 | /** Number of bytes currently read. */
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69 | uint64_t cbCurrentlyRead;
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70 | /** Number of bytes currently written. */
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71 | uint64_t cbCurrentlyWritten;
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72 | /** Current precentage. */
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73 | unsigned uCurPct;
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74 | } RTVFSPROGRESSFILE;
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75 | /** Pointer to the private data of a standard file. */
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76 | typedef RTVFSPROGRESSFILE *PRTVFSPROGRESSFILE;
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77 |
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78 |
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79 | /**
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80 | * Update the progress and do the progress callback if necessary.
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81 | *
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82 | * @returns Callback return code.
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83 | * @param pThis The file progress instance.
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84 | */
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85 | static int rtVfsProgressFile_UpdateProgress(PRTVFSPROGRESSFILE pThis)
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86 | {
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87 | uint64_t cbDone = RT_MIN(pThis->cbCurrentlyRead, pThis->cbExpectedRead)
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88 | + RT_MIN(pThis->cbCurrentlyWritten, pThis->cbExpectedWritten);
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89 | unsigned uPct = cbDone * 100 / pThis->cbExpected;
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90 | if (uPct == pThis->uCurPct)
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91 | return pThis->rcCanceled;
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92 | pThis->uCurPct = uPct;
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93 |
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94 | int rc = pThis->pfnProgress(uPct, pThis->pvUser);
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95 | if (!(pThis->fFlags & RTVFSPROGRESS_F_CANCELABLE))
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96 | rc = VINF_SUCCESS;
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97 | else if (RT_FAILURE(rc) && RT_SUCCESS(pThis->rcCanceled))
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98 | pThis->rcCanceled = rc;
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99 |
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100 | return rc;
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101 | }
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102 |
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103 |
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104 | /**
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105 | * @interface_method_impl{RTVFSOBJOPS,pfnClose}
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106 | */
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107 | static DECLCALLBACK(int) rtVfsProgressFile_Close(void *pvThis)
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108 | {
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109 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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110 |
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111 | if (pThis->hVfsFile != NIL_RTVFSFILE)
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112 | {
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113 | RTVfsFileRelease(pThis->hVfsFile);
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114 | pThis->hVfsFile = NIL_RTVFSFILE;
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115 | }
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116 | RTVfsIoStrmRelease(pThis->hVfsIos);
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117 | pThis->hVfsIos = NIL_RTVFSIOSTREAM;
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118 |
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119 | pThis->pfnProgress = NULL;
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120 |
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121 | return VINF_SUCCESS;
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122 | }
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123 |
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124 |
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125 | /**
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126 | * @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo}
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127 | */
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128 | static DECLCALLBACK(int) rtVfsProgressFile_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
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129 | {
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130 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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131 | int rc = pThis->rcCanceled;
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132 | if (RT_SUCCESS(rc))
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133 | rc = RTVfsIoStrmQueryInfo(pThis->hVfsIos, pObjInfo, enmAddAttr);
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134 | return rc;
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135 | }
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136 |
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137 |
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138 | /**
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139 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnRead}
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140 | */
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141 | static DECLCALLBACK(int) rtVfsProgressFile_Read(void *pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t *pcbRead)
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142 | {
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143 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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144 |
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145 | int rc = pThis->rcCanceled;
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146 | if (RT_SUCCESS(rc))
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147 | {
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148 | /* Simplify a little there if a seeks is implied and assume the read goes well. */
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149 | if ( off >= 0
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150 | && (pThis->fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ))
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151 | {
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152 | uint64_t offCurrent = RTVfsFileTell(pThis->hVfsFile);
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153 | if (offCurrent < (uint64_t)off)
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154 | pThis->cbCurrentlyRead += off - offCurrent;
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155 | }
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156 |
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157 | /* Calc the request before calling down the stack. */
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158 | size_t cbReq = 0;
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159 | unsigned i = pSgBuf->cSegs;
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160 | while (i-- > 0)
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161 | cbReq += pSgBuf->paSegs[i].cbSeg;
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162 |
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163 | /* Do the read. */
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164 | rc = RTVfsIoStrmSgRead(pThis->hVfsIos, off, pSgBuf, fBlocking, pcbRead);
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165 | if (RT_SUCCESS(rc))
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166 | {
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167 | /* Update the progress (we cannot cancel here, sorry). */
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168 | pThis->cbCurrentlyRead += pcbRead ? *pcbRead : cbReq;
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169 | rtVfsProgressFile_UpdateProgress(pThis);
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170 | }
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171 | }
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172 |
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173 | return rc;
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174 | }
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175 |
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176 |
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177 | /**
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178 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnWrite}
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179 | */
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180 | static DECLCALLBACK(int) rtVfsProgressFile_Write(void *pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t *pcbWritten)
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181 | {
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182 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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183 |
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184 | int rc = pThis->rcCanceled;
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185 | if (RT_SUCCESS(rc))
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186 | {
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187 | /* Simplify a little there if a seeks is implied and assume the write goes well. */
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188 | if ( off >= 0
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189 | && (pThis->fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE))
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190 | {
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191 | uint64_t offCurrent = RTVfsFileTell(pThis->hVfsFile);
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192 | if (offCurrent < (uint64_t)off)
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193 | pThis->cbCurrentlyWritten += off - offCurrent;
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194 | }
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195 |
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196 | /* Calc the request before calling down the stack. */
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197 | size_t cbReq = 0;
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198 | unsigned i = pSgBuf->cSegs;
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199 | while (i-- > 0)
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200 | cbReq += pSgBuf->paSegs[i].cbSeg;
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201 |
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202 | /* Do the read. */
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203 | rc = RTVfsIoStrmSgWrite(pThis->hVfsIos, off, pSgBuf, fBlocking, pcbWritten);
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204 | if (RT_SUCCESS(rc))
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205 | {
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206 | /* Update the progress (we cannot cancel here, sorry). */
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207 | pThis->cbCurrentlyWritten += pcbWritten ? *pcbWritten : cbReq;
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208 | rtVfsProgressFile_UpdateProgress(pThis);
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209 | }
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210 | }
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211 |
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212 | return rc;
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213 | }
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214 |
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215 |
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216 | /**
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217 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnFlush}
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218 | */
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219 | static DECLCALLBACK(int) rtVfsProgressFile_Flush(void *pvThis)
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220 | {
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221 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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222 | int rc = pThis->rcCanceled;
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223 | if (RT_SUCCESS(rc))
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224 | rc = RTVfsIoStrmFlush(pThis->hVfsIos);
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225 | return rc;
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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 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnPollOne}
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231 | */
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232 | static DECLCALLBACK(int)
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233 | rtVfsProgressFile_PollOne(void *pvThis, uint32_t fEvents, RTMSINTERVAL cMillies, bool fIntr, uint32_t *pfRetEvents)
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234 | {
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235 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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236 | int rc = pThis->rcCanceled;
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237 | if (RT_SUCCESS(rc))
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238 | rc = RTVfsIoStrmPoll(pThis->hVfsIos, fEvents, cMillies, fIntr, pfRetEvents);
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239 | else
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240 | {
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241 | *pfRetEvents |= RTPOLL_EVT_ERROR;
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242 | rc = VINF_SUCCESS;
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243 | }
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244 | return rc;
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245 | }
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246 |
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247 |
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248 | /**
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249 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnTell}
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250 | */
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251 | static DECLCALLBACK(int) rtVfsProgressFile_Tell(void *pvThis, PRTFOFF poffActual)
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252 | {
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253 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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254 | *poffActual = RTVfsIoStrmTell(pThis->hVfsIos);
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255 | return *poffActual >= 0 ? VINF_SUCCESS : (int)*poffActual;
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256 | }
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257 |
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258 |
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259 | /**
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260 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnSkip}
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261 | */
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262 | static DECLCALLBACK(int) rtVfsProgressFile_Skip(void *pvThis, RTFOFF cb)
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263 | {
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264 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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265 | int rc = pThis->rcCanceled;
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266 | if (RT_SUCCESS(rc))
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267 | {
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268 | rc = RTVfsIoStrmSkip(pThis->hVfsIos, cb);
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269 | if (RT_SUCCESS(rc))
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270 | {
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271 | pThis->cbCurrentlyRead += cb;
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272 | rtVfsProgressFile_UpdateProgress(pThis);
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273 | }
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274 | }
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275 | return rc;
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276 | }
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277 |
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278 |
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279 | /**
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280 | * @interface_method_impl{RTVFSIOSTREAMOPS,pfnZeroFill}
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281 | */
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282 | static DECLCALLBACK(int) rtVfsProgressFile_ZeroFill(void *pvThis, RTFOFF cb)
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283 | {
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284 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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285 | int rc = pThis->rcCanceled;
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286 | if (RT_SUCCESS(rc))
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287 | {
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288 | rc = RTVfsIoStrmZeroFill(pThis->hVfsIos, cb);
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289 | if (RT_SUCCESS(rc))
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290 | {
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291 | pThis->cbCurrentlyWritten += cb;
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292 | rtVfsProgressFile_UpdateProgress(pThis);
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293 | }
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294 | }
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295 | return rc;
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296 | }
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297 |
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298 |
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299 | /**
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300 | * I/O stream progress operations.
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301 | */
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302 | DECL_HIDDEN_CONST(const RTVFSIOSTREAMOPS) g_rtVfsProgressIosOps =
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303 | {
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304 | { /* Obj */
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305 | RTVFSOBJOPS_VERSION,
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306 | RTVFSOBJTYPE_IO_STREAM,
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307 | "I/O Stream Progress",
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308 | rtVfsProgressFile_Close,
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309 | rtVfsProgressFile_QueryInfo,
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310 | RTVFSOBJOPS_VERSION
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311 | },
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312 | RTVFSIOSTREAMOPS_VERSION,
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313 | 0,
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314 | rtVfsProgressFile_Read,
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315 | rtVfsProgressFile_Write,
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316 | rtVfsProgressFile_Flush,
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317 | rtVfsProgressFile_PollOne,
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318 | rtVfsProgressFile_Tell,
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319 | rtVfsProgressFile_Skip,
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320 | rtVfsProgressFile_ZeroFill,
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321 | RTVFSIOSTREAMOPS_VERSION,
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322 | };
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323 |
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324 |
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325 |
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326 | /**
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327 | * @interface_method_impl{RTVFSOBJSETOPS,pfnMode}
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328 | */
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329 | static DECLCALLBACK(int) rtVfsProgressFile_SetMode(void *pvThis, RTFMODE fMode, RTFMODE fMask)
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330 | {
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331 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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332 | //return RTVfsFileSetMode(pThis->hVfsIos, fMode, fMask); - missing
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333 | RT_NOREF(pThis, fMode, fMask);
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334 | AssertFailedReturn(VERR_NOT_IMPLEMENTED);
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335 | }
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336 |
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337 |
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338 | /**
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339 | * @interface_method_impl{RTVFSOBJSETOPS,pfnSetTimes}
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340 | */
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341 | static DECLCALLBACK(int) rtVfsProgressFile_SetTimes(void *pvThis, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
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342 | PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
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343 | {
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344 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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345 | //return RTVfsFileSetTimes(pThis->hVfsIos, pAccessTime, pModificationTime, pChangeTime, pBirthTime); - missing
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346 | RT_NOREF(pThis, pAccessTime, pModificationTime, pChangeTime, pBirthTime);
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347 | AssertFailedReturn(VERR_NOT_IMPLEMENTED);
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348 | }
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349 |
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350 |
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351 | /**
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352 | * @interface_method_impl{RTVFSOBJSETOPS,pfnSetOwner}
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353 | */
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354 | static DECLCALLBACK(int) rtVfsProgressFile_SetOwner(void *pvThis, RTUID uid, RTGID gid)
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355 | {
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356 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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357 | //return RTVfsFileSetOwern(pThis->hVfsIos, uid, gid); - missing
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358 | RT_NOREF(pThis, uid, gid);
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359 | AssertFailedReturn(VERR_NOT_IMPLEMENTED);
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360 | }
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361 |
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362 |
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363 | /**
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364 | * @interface_method_impl{RTVFSFILEOPS,pfnSeek}
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365 | */
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366 | static DECLCALLBACK(int) rtVfsProgressFile_Seek(void *pvThis, RTFOFF offSeek, unsigned uMethod, PRTFOFF poffActual)
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367 | {
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368 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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369 |
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370 | uint64_t offPrev = UINT64_MAX;
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371 | if (pThis->fFlags & (RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ | RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE))
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372 | offPrev = RTVfsFileTell(pThis->hVfsFile);
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373 |
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374 | uint64_t offActual = 0;
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375 | int rc = RTVfsFileSeek(pThis->hVfsFile, offSeek, uMethod, &offActual);
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376 | if (RT_SUCCESS(rc))
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377 | {
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378 | if (poffActual)
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379 | *poffActual = offActual;
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380 |
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381 | /* Do progress updates as requested. */
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382 | if (pThis->fFlags & (RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ | RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE))
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383 | {
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384 | if (offActual > offPrev)
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385 | {
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386 | if (pThis->fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ)
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387 | pThis->cbCurrentlyRead += offActual - offPrev;
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388 | else
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389 | pThis->cbCurrentlyWritten += offActual - offPrev;
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390 | rtVfsProgressFile_UpdateProgress(pThis);
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391 | }
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392 | }
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393 | }
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394 | return rc;
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395 | }
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396 |
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397 |
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398 | /**
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399 | * @interface_method_impl{RTVFSFILEOPS,pfnQuerySize}
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400 | */
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401 | static DECLCALLBACK(int) rtVfsProgressFile_QuerySize(void *pvThis, uint64_t *pcbFile)
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402 | {
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403 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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404 | return RTVfsFileGetSize(pThis->hVfsFile, pcbFile);
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405 | }
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406 |
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407 |
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408 | /**
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409 | * @interface_method_impl{RTVFSFILEOPS,pfnSetSize}
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410 | */
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411 | static DECLCALLBACK(int) rtVfsProgressFile_SetSize(void *pvThis, uint64_t cbFile, uint32_t fFlags)
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412 | {
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413 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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414 | return RTVfsFileSetSize(pThis->hVfsFile, cbFile, fFlags);
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415 | }
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416 |
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417 |
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418 | /**
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419 | * @interface_method_impl{RTVFSFILEOPS,pfnQueryMaxSize}
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420 | */
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421 | static DECLCALLBACK(int) rtVfsProgressFile_QueryMaxSize(void *pvThis, uint64_t *pcbMax)
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422 | {
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423 | PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
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424 | return RTVfsFileQueryMaxSize(pThis->hVfsFile, pcbMax);
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425 | }
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426 |
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427 |
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428 |
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429 | /**
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430 | * File progress operations.
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431 | */
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432 | DECL_HIDDEN_CONST(const RTVFSFILEOPS) g_rtVfsProgressFileOps =
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433 | {
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434 | { /* Stream */
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435 | { /* Obj */
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436 | RTVFSOBJOPS_VERSION,
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437 | RTVFSOBJTYPE_FILE,
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438 | "File Progress",
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439 | rtVfsProgressFile_Close,
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440 | rtVfsProgressFile_QueryInfo,
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441 | RTVFSOBJOPS_VERSION
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442 | },
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443 | RTVFSIOSTREAMOPS_VERSION,
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444 | 0,
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445 | rtVfsProgressFile_Read,
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446 | rtVfsProgressFile_Write,
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447 | rtVfsProgressFile_Flush,
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448 | rtVfsProgressFile_PollOne,
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449 | rtVfsProgressFile_Tell,
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450 | rtVfsProgressFile_Skip,
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451 | rtVfsProgressFile_ZeroFill,
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452 | RTVFSIOSTREAMOPS_VERSION,
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453 | },
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454 | RTVFSFILEOPS_VERSION,
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455 | 0,
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456 | { /* ObjSet */
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457 | RTVFSOBJSETOPS_VERSION,
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458 | RT_UOFFSETOF(RTVFSFILEOPS, ObjSet) - RT_UOFFSETOF(RTVFSFILEOPS, Stream.Obj),
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459 | rtVfsProgressFile_SetMode,
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460 | rtVfsProgressFile_SetTimes,
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461 | rtVfsProgressFile_SetOwner,
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462 | RTVFSOBJSETOPS_VERSION
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463 | },
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464 | rtVfsProgressFile_Seek,
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465 | rtVfsProgressFile_QuerySize,
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466 | rtVfsProgressFile_SetSize,
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467 | rtVfsProgressFile_QueryMaxSize,
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468 | RTVFSFILEOPS_VERSION
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469 | };
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470 |
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471 |
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472 | RTDECL(int) RTVfsCreateProgressForIoStream(RTVFSIOSTREAM hVfsIos, PFNRTPROGRESS pfnProgress, void *pvUser, uint32_t fFlags,
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473 | uint64_t cbExpectedRead, uint64_t cbExpectedWritten, PRTVFSIOSTREAM phVfsIos)
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474 | {
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475 | AssertPtrReturn(pfnProgress, VERR_INVALID_POINTER);
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476 | AssertReturn(!(fFlags & ~RTVFSPROGRESS_F_VALID_MASK), VERR_INVALID_FLAGS);
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477 | AssertReturn(!(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ) || !(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE),
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478 | VERR_INVALID_FLAGS);
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479 |
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480 | uint32_t cRefs = RTVfsIoStrmRetain(hVfsIos);
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481 | AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE);
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482 |
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483 | PRTVFSPROGRESSFILE pThis;
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484 | int rc = RTVfsNewIoStream(&g_rtVfsProgressIosOps, sizeof(*pThis), RTVfsIoStrmGetOpenFlags(hVfsIos),
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485 | NIL_RTVFS, NIL_RTVFSLOCK, phVfsIos, (void **)&pThis);
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486 | if (RT_SUCCESS(rc))
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487 | {
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488 | pThis->rcCanceled = VINF_SUCCESS;
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489 | pThis->fFlags = fFlags;
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490 | pThis->pfnProgress = pfnProgress;
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491 | pThis->pvUser = pvUser;
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492 | pThis->hVfsIos = hVfsIos;
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493 | pThis->hVfsFile = RTVfsIoStrmToFile(hVfsIos);
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494 | pThis->cbCurrentlyRead = 0;
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495 | pThis->cbCurrentlyWritten = 0;
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496 | pThis->cbExpectedRead = cbExpectedRead;
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497 | pThis->cbExpectedWritten = cbExpectedWritten;
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498 | pThis->cbExpected = cbExpectedRead + cbExpectedWritten;
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499 | if (!pThis->cbExpected)
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500 | pThis->cbExpected = 1;
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501 | pThis->uCurPct = 0;
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502 | }
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503 | return rc;
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504 | }
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505 |
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506 |
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507 | RTDECL(int) RTVfsCreateProgressForFile(RTVFSFILE hVfsFile, PFNRTPROGRESS pfnProgress, void *pvUser, uint32_t fFlags,
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508 | uint64_t cbExpectedRead, uint64_t cbExpectedWritten, PRTVFSFILE phVfsFile)
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509 | {
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510 | AssertPtrReturn(pfnProgress, VERR_INVALID_POINTER);
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511 | AssertReturn(!(fFlags & ~RTVFSPROGRESS_F_VALID_MASK), VERR_INVALID_FLAGS);
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512 | AssertReturn(!(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ) || !(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE),
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513 | VERR_INVALID_FLAGS);
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514 |
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515 | uint32_t cRefs = RTVfsFileRetain(hVfsFile);
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516 | AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE);
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517 |
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518 | RTVFSIOSTREAM hVfsIos = RTVfsFileToIoStream(hVfsFile);
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519 | AssertReturnStmt(hVfsIos != NIL_RTVFSIOSTREAM, RTVfsFileRelease(hVfsFile), VERR_INVALID_HANDLE);
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520 |
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521 | PRTVFSPROGRESSFILE pThis;
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522 | int rc = RTVfsNewFile(&g_rtVfsProgressFileOps, sizeof(*pThis), RTVfsFileGetOpenFlags(hVfsFile),
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523 | NIL_RTVFS, NIL_RTVFSLOCK, phVfsFile, (void **)&pThis);
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524 | if (RT_SUCCESS(rc))
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525 | {
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526 | pThis->fFlags = fFlags;
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527 | pThis->pfnProgress = pfnProgress;
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528 | pThis->pvUser = pvUser;
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529 | pThis->hVfsIos = hVfsIos;
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530 | pThis->hVfsFile = hVfsFile;
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531 | pThis->cbCurrentlyRead = 0;
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532 | pThis->cbCurrentlyWritten = 0;
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533 | pThis->cbExpectedRead = cbExpectedRead;
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534 | pThis->cbExpectedWritten = cbExpectedWritten;
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535 | pThis->cbExpected = cbExpectedRead + cbExpectedWritten;
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536 | if (!pThis->cbExpected)
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537 | pThis->cbExpected = 1;
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538 | pThis->uCurPct = 0;
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539 | }
|
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540 | return rc;
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541 | }
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542 |
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