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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><!-- http://linux-ntfs.sourceforge.net/ntfs/attributes/standard_information.html --><html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <meta name="description" content="NTFS Documentation"> <link rel="stylesheet" type="text/css" href="../style/ntfsdoc.css"> <link rel="start" type="text/html" href="../index.html" title="NTFS Documentation"> <title>$STANDARD_INFORMATION (0x10) - Attribute - NTFS Documentation</title> </head> <body> <table border="0" class="toolbar" summary="" cellspacing="0"> <tr> <td class="toolbar"><a accesskey="1" class="toolbar" href="../index.html">Home</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="2" class="toolbar" href="../files/index.html">Files</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="3" class="toolbar" href="../attributes/index.html">Attributes</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="4" class="toolbar" href="../concepts/index.html">Concepts</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="5" class="toolbar" href="../help/glossary.html">Glossary</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="6" class="toolbar" href="../help/index.html">Help</a></td> </tr> </table> <h1>Attribute - $STANDARD_INFORMATION (0x10)</h1> <a class="prevnext" accesskey="," href="index.html">Previous</a> <a class="prevnext" accesskey="." href="attribute_list.html">Next</a> <h2>Overview</h2> <p> In old version of NTFS this Attribute contained little more than the DOS File Permissions and the file times. </p> <p> Windows 2000 introduced four new fields which are used to reference Quota, Security, File Size and Logging information. </p> <p> As defined in <a href="../files/attrdef.html">$AttrDef</a>, this attribute has a minimum size of 48 bytes and a maximum of 72 bytes. </p> <h2>Layout of the Attribute (Resident)</h2> <table border="1" summary="" cellspacing="0"> <tr> <th class="numeric">Offset</th> <th class="numeric">Size</th> <th>OS</th> <th>Description</th> </tr> <tr> <td class="numeric">~</td> <td class="numeric">~</td> <td> </td> <td><a href="../concepts/attribute_header.html">Standard Attribute Header</a></td> </tr> <tr> <td class="numeric">0x00</td> <td class="numeric">8</td> <td> </td> <td>C Time - File Creation</td> </tr> <tr> <td class="numeric">0x08</td> <td class="numeric">8</td> <td> </td> <td>A Time - File Altered</td> </tr> <tr> <td class="numeric">0x10</td> <td class="numeric">8</td> <td> </td> <td>M Time - MFT Changed</td> </tr> <tr> <td class="numeric">0x18</td> <td class="numeric">8</td> <td> </td> <td>R Time - File Read</td> </tr> <tr> <td class="numeric">0x20</td> <td class="numeric">4</td> <td> </td> <td>DOS File Permissions</td> </tr> <tr> <td class="numeric">0x24</td> <td class="numeric">4</td> <td> </td> <td>Maximum Number of Versions</td> </tr> <tr> <td class="numeric">0x28</td> <td class="numeric">4</td> <td> </td> <td>Version Number</td> </tr> <tr> <td class="numeric">0x2C</td> <td class="numeric">4</td> <td> </td> <td>Class Id</td> </tr> <tr> <td class="numeric">0x30</td> <td class="numeric">4</td> <td>2K</td> <td>Owner Id</td> </tr> <tr> <td class="numeric">0x34</td> <td class="numeric">4</td> <td>2K</td> <td>Security Id</td> </tr> <tr> <td class="numeric">0x38</td> <td class="numeric">8</td> <td>2K</td> <td>Quota Charged</td> </tr> <tr> <td class="numeric">0x40</td> <td class="numeric">8</td> <td>2K</td> <td>Update Sequence Number (USN)</td> </tr> </table> <h3>File Permissions</h3> <p>Also called attributes in DOS terminology.</p> <table border="1" summary="" cellspacing="0"> <tr> <th class="numeric">Flag</th> <th>Description</th> </tr> <tr> <td class="numeric">0x0001</td> <td>Read-Only</td> </tr> <tr> <td class="numeric">0x0002</td> <td>Hidden</td> </tr> <tr> <td class="numeric">0x0004</td> <td>System</td> </tr> <tr> <td class="numeric">0x0020</td> <td>Archive</td> </tr> <tr> <td class="numeric">0x0040</td> <td>Device</td> </tr> <tr> <td class="numeric">0x0080</td> <td>Normal</td> </tr> <tr> <td class="numeric">0x0100</td> <td>Temporary</td> </tr> <tr> <td class="numeric">0x0200</td> <td>Sparse File</td> </tr> <tr> <td class="numeric">0x0400</td> <td>Reparse Point</td> </tr> <tr> <td class="numeric">0x0800</td> <td>Compressed</td> </tr> <tr> <td class="numeric">0x1000</td> <td>Offline</td> </tr> <tr> <td class="numeric">0x2000</td> <td>Not Content Indexed</td> </tr> <tr> <td class="numeric">0x4000</td> <td>Encrypted</td> </tr> </table> <dl> <dt>Maximum Number of Versions</dt> <dd> Maximum allowed versions for file. Zero means that version numbering is disabled. </dd> <dt>Version Number</dt> <dd> This file's version (if any). Will be zero if Maximum Number of Versions is zero. </dd> <dt>Class Id</dt> <dd class="check"> Class Id from bidirectional Class Id index. </dd> <dt>Owner Id</dt> <dd> Owner Id of the user owning the file. This Id is a key in the <a href="../files/quota.html">$O and $Q</a> Indexes of the file <a href="../files/quota.html">$Quota</a>. If zero, then quotas are disabled. </dd> <dt>Security Id</dt> <dd> This should not be confused with a Security Identifier. The Security Id is a key in the <a href="../files/secure.html">$SII Index and $SDS Data Stream</a> in the file <a href="../files/secure.html">$Secure</a>. </dd> <dt>Quota Charged</dt> <dd> The number of bytes this file user from the user's quota. This should be the total data size of all streams. If zero, then quotas are disabled. </dd> <dt>Update Sequence Number (USN)</dt> <dd> Last Update Sequence Number of the file. This is a direct index into the file <a href="../files/usnjrnl.html">$UsnJrnl</a>. If zero, the USN Journal is disabled. </dd> </dl> <h2>Notes</h2> <h3>Other Information</h3> <p class="check"> If a NTFS volume is upgraded from v1.2 to v3.0, then this attribute won't be upgraded (lengthened) until it is accesssed. </p> <h3>Questions</h3> <p> Are the Version fields and the Class Id ever used? </p> <br> <a class="contact" href="http://linux-ntfs.sourceforge.net/ntfs/attributes/standard_information.html">Online</a> <!-- The two validators will only work if this page is visible on the web --> <a class="contact" href="http://validator.w3.org/check/referer">Validate HTML</a> <a class="contact" href="http://jigsaw.w3.org/css-validator/check/referer">Validate CSS</a> <a class="contact" href="mailto:webmaster@flatcap.org">$Id: standard_information.html,v 1.10 2001/07/11 11:04:05 flatcap Exp $</a> </body></html>⌨️ 快捷键说明
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