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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><!-- http://linux-ntfs.sourceforge.net/ntfs/concepts/file.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>File - Concept - 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>Concept - File</h1> <a class="prevnext" accesskey="," href="directory.html">Previous</a> <a class="prevnext" accesskey="." href="file_record.html">Next</a> <h2>Overview</h2> <p> It is composed of attributes including its name and its data. </p> <h2>Attributes</h2> <table border="1" summary="directory.html" cellspacing="0"> <tr> <th class="numeric">Type</th> <th>Description</th> <th>Name</th> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/standard_information.html">0x10</a></td> <td><a href="../attributes/standard_information.html">$STANDARD_INFORMATION</a></td> <td> </td> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/file_name.html">0x30</a></td> <td><a href="../attributes/file_name.html">$FILE_NAME</a></td> <td>filename</td> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/security_descriptor.html">0x50</a></td> <td><a href="../attributes/security_descriptor.html">$SECURITY_DESCRIPTOR</a></td> <td> </td> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/data.html">0x80</a></td> <td><a href="../attributes/data.html">$DATA</a></td> <td>[Unnamed]</td> </tr> </table> <h3>Standard Information</h3> <p> This contains the DOS-style file permission, such as read-only and archive. It also contains four different types of modification time. </p> <ul> <li>File creation time</li> <li>Last modification time</li> <li>Last modification time for FILE record</li> <li>Last access time</li> </ul> <h3>File Name</h3> <p> The file's name is stored as an attribute, too. A file can have several filenames. This is Windows' equivalent to hard linking files together. </p> <h3>Security Descriptor</h3> <p> This stores all of Windows' permissions. ACLs, ACEs, auditing. </p> <pre> May not exist on Win2K (std info, $secure) </pre> <a name="data"></a> <h3>Data</h3> <p> This, finally, is the actual data of the file. It, too, is stored in an attribute </p> <pre> unnamed data stream compulsory (chkdsk will put it back if missing) named data streams optional (any limit to the number?) </pre> <h2>Named Data Streams</h2> <pre> access with "jim.txt:stream" </pre> <table border="1" summary="directory.html" cellspacing="0"> <tr> <th class="numeric">Type</th> <th>Description</th> <th>Name</th> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/data.html">0x80</a></td> <td><a href="../attributes/data.html">$DATA</a></td> <td>icon</td> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/data.html">0x80</a></td> <td><a href="../attributes/data.html">$DATA</a></td> <td>author</td> </tr> </table> <a name="summary_information"></a> <h2>Summary Information</h2> <p> Windows 2000 introduced the idea of summary information on files. This information is stored as a set of four named data streams. </p> <dl> <dt>Description</dt> <dd>Title</dd> <dd>Subject</dd> <dd>Category</dd> <dd>Keywords (multi-line)</dd> <dd>Comments (multi-line)</dd> <dt>Origin</dt> <dd>Source</dd> <dd>Author</dd> <dd>Revision Number</dd> </dl> <table border="1" summary="directory.html" cellspacing="0"> <tr> <th class="numeric">Type</th> <th>Description</th> <th>Name</th> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/data.html">0x80</a></td> <td><a href="../attributes/data.html">$DATA</a></td> <td>{4c8cc155-6c1e-11d1-8e41-00c04fb9386d}</td> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/data.html">0x80</a></td> <td><a href="../attributes/data.html">$DATA</a></td> <td>^EDocumentSummaryInformation</td> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/data.html">0x80</a></td> <td><a href="../attributes/data.html">$DATA</a></td> <td>^ESebiesnrMkudrfcoIaamtykdDa</td> </tr> <tr> <td class="numeric"><a class="numeric" href="../attributes/data.html">0x80</a></td> <td><a href="../attributes/data.html">$DATA</a></td> <td>^ESummaryInformation</td> </tr> </table> <p> N.B. Three of the names begin with CTRL-E (0x05). This is probably to discourage people from reading the streams directly. </p> <p> The first stream <q>{4c..</q> is always empty. This is probably just a marker to </p> <table border="1" summary="directory.html" cellspacing="0"> <tr> <th>Data Stream</th> <th>Summary Field</th> <th>Data Type</th> <th>Code</th> </tr> <tr> <td rowspan="3">^EDocumentSummaryInformation</td> <td>Unknown1</td> <td>Numeric?</td> <td>0x00</td> </tr> <tr> <td>Unknown2</td> <td>Numeric</td> <td>0x01</td> </tr> <tr> <td>Category</td> <td>ASCII</td> <td>0x02</td> </tr> <tr> <td rowspan="3">^ESebiesnrMkudrfcoIaamtykdDa</td> <td>Unknown3</td> <td>Numeric?</td> <td>0x00</td> </tr> <tr> <td>Unknown4</td> <td>Numeric?</td> <td>0x01</td> </tr> <tr> <td>Source</td> <td>Unicode</td> <td>0x04</td> </tr> <tr> <td rowspan="8">^ESummaryInformation</td> <td>Unknown5</td> <td>Numeric?</td> <td>0x00</td> </tr> <tr> <td>Unknown6</td> <td>Numeric?</td> <td>0x01</td> </tr> <tr> <td>Title</td> <td>ASCII</td> <td>0x02</td> </tr> <tr> <td>Subject</td> <td>ASCII</td> <td>0x03</td> </tr> <tr> <td>Author</td> <td>ASCII</td> <td>0x04</td> </tr> <tr> <td>Keywords</td> <td>ASCII</td> <td>0x05</td> </tr> <tr> <td>Comments</td> <td>ASCII</td> <td>0x06</td> </tr> <tr> <td>Revision Number</td> <td>ASCII</td> <td>0x09</td> </tr> </table> <br> <a class="contact" href="http://linux-ntfs.sourceforge.net/ntfs/concepts/file.html">Online</a> <!-- The two validators will only work if this page is visible on the web --> <a class="contact" href="http://validator.w3.org/check/referer">Validate HTML</a> <a class="contact" href="http://jigsaw.w3.org/css-validator/check/referer">Validate CSS</a> <a class="contact" href="mailto:webmaster@flatcap.org">$Id: file.html,v 1.11 2001/07/11 11:04:05 flatcap Exp $</a> </body></html>⌨️ 快捷键说明
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