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 <span id="projectnumber">v2.00 late beta</span>
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<a href="#pub-methods">Public Member Functions</a> |
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<a href="structllfio__v2__xxx_1_1stat__t-members.html">List of all members</a> </div>
<div class="headertitle">
<div class="title">llfio_v2_xxx::stat_t Struct Reference</div> </div>
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<p>Metadata about a directory entry.
<a href="structllfio__v2__xxx_1_1stat__t.html#details">More...</a></p>
<p><code>#include "stat.hpp"</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a7c281295d6ae22631336206446f37581"><td class="memItemLeft" align="right" valign="top"><a id="a7c281295d6ae22631336206446f37581"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a7c281295d6ae22631336206446f37581">QUICKCPPLIB_BITFIELD_BEGIN</a> (want)</td></tr>
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 </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a8fc0ebfd31e3e3c5fe561f61fb86a6b7">QUICKCPPLIB_BITFIELD_END</a> (want) <a class="el" href="structllfio__v2__xxx_1_1stat__t.html">stat_t</a>()</td></tr>
<tr class="memdesc:a8fc0ebfd31e3e3c5fe561f61fb86a6b7"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a UNINITIALIZED instance i.e. full of random garbage. <br /></td></tr>
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constexpr </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#aef93718067115fcb4c596f4c8fe4cc2f">stat_t</a> (std::nullptr_t) noexcept</td></tr>
<tr class="memdesc:aef93718067115fcb4c596f4c8fe4cc2f"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a zeroed instance. <br /></td></tr>
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<tr class="memitem:a4227ceec0d2fbb66c62c4f71859ff841"><td class="memItemLeft" align="right" valign="top"><a id="a4227ceec0d2fbb66c62c4f71859ff841"></a>
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a4227ceec0d2fbb66c62c4f71859ff841">operator==</a> (const <a class="el" href="structllfio__v2__xxx_1_1stat__t.html">stat_t</a> &o) const noexcept</td></tr>
<tr class="memdesc:a4227ceec0d2fbb66c62c4f71859ff841"><td class="mdescLeft"> </td><td class="mdescRight">Equality comparison. <br /></td></tr>
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bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a00e9ca499bb50e3117744a98c0176f27">operator!=</a> (const <a class="el" href="structllfio__v2__xxx_1_1stat__t.html">stat_t</a> &o) const noexcept</td></tr>
<tr class="memdesc:a00e9ca499bb50e3117744a98c0176f27"><td class="mdescLeft"> </td><td class="mdescRight">Inequality comparison. <br /></td></tr>
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<tr class="memitem:acbcf2ad965fdfefc7dbead1ad3c90a4a"><td class="memItemLeft" align="right" valign="top"><a id="acbcf2ad965fdfefc7dbead1ad3c90a4a"></a>
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#acbcf2ad965fdfefc7dbead1ad3c90a4a">operator<</a> (const <a class="el" href="structllfio__v2__xxx_1_1stat__t.html">stat_t</a> &o) const noexcept</td></tr>
<tr class="memdesc:acbcf2ad965fdfefc7dbead1ad3c90a4a"><td class="mdescLeft"> </td><td class="mdescRight">Ordering. <br /></td></tr>
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Public Attributes</h2></td></tr>
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<tr class="memitem:a407dbe624125b5d0d40ebfe647d41214"><td class="memItemLeft" align="right" valign="top">filesystem::file_type </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a407dbe624125b5d0d40ebfe647d41214">st_type</a></td></tr>
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<tr class="memitem:aad72b484858508a738a8ef478fbfd26f"><td class="memItemLeft" align="right" valign="top">stil1z::filesystem::perms </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#aad72b484858508a738a8ef478fbfd26f">st_perms</a></td></tr>
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<tr class="memitem:adddfea199a341a46824f6deec2952bb4"><td class="memItemLeft" align="right" valign="top">int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#adddfea199a341a46824f6deec2952bb4">st_nlink</a></td></tr>
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<tr class="memitem:ad42affc84324ad00a39379ab3d9a428b"><td class="memItemLeft" align="right" valign="top">int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#ad42affc84324ad00a39379ab3d9a428b">st_uid</a></td></tr>
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<tr class="memitem:a83827c7cbf9ebc2b5c965e509ed1748b"><td class="memItemLeft" align="right" valign="top">int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a83827c7cbf9ebc2b5c965e509ed1748b">st_gid</a></td></tr>
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<tr class="memitem:a17d58119a066c7f0bef7d929f3dcddc2"><td class="memItemLeft" align="right" valign="top">dev_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a17d58119a066c7f0bef7d929f3dcddc2">st_rdev</a></td></tr>
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<tr class="memitem:a1a8d35bee4411c3f8358e4c5bac7472f"><td class="memItemLeft" ><a id="a1a8d35bee4411c3f8358e4c5bac7472f"></a>
union {</td></tr>
<tr class="memitem:a0e61a147a9001221a8bfbc60136bcb37"><td class="memItemLeft" >   std::chrono::system_clock::time_point   <a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a3e33b115cae22ba75360660274f660b9">st_atim</a></td></tr>
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<tr class="memitem:a1135f4b37b0185812691fb8d3035b56f"><td class="memItemLeft" ><a id="a1135f4b37b0185812691fb8d3035b56f"></a>
union {</td></tr>
<tr class="memitem:a0779e3a802cdb735bec2685fb76fa7d0"><td class="memItemLeft" >   std::chrono::system_clock::time_point   <a class="el" href="structllfio__v2__xxx_1_1stat__t.html#aefe8c88dad824c911fa7bf6e1baef1c4">st_mtim</a></td></tr>
<tr class="separator:a0779e3a802cdb735bec2685fb76fa7d0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1135f4b37b0185812691fb8d3035b56f"><td class="memItemLeft" valign="top">}; </td><td class="memItemRight" valign="bottom"></td></tr>
<tr class="separator:a1135f4b37b0185812691fb8d3035b56f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad1011453b88f83a093c21636a03d3b74"><td class="memItemLeft" ><a id="ad1011453b88f83a093c21636a03d3b74"></a>
union {</td></tr>
<tr class="memitem:a70451a65b430579f43f834a99f97ad08"><td class="memItemLeft" >   std::chrono::system_clock::time_point   <a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a5656cbf7f1eb5fb2a921eac5caf3e506">st_ctim</a></td></tr>
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<tr class="memitem:ad1011453b88f83a093c21636a03d3b74"><td class="memItemLeft" valign="top">}; </td><td class="memItemRight" valign="bottom"></td></tr>
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<tr class="memitem:abbe9fc921f2cbb96d68da4e0b208597a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classllfio__v2__xxx_1_1handle.html#a4ee58f1b6a24af5e64d850d1e3eed07f">handle::extent_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#abbe9fc921f2cbb96d68da4e0b208597a">st_size</a></td></tr>
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<tr class="memitem:a6058efe9cba70e827f7c2b9939e93542"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a6058efe9cba70e827f7c2b9939e93542">st_blksize</a></td></tr>
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<tr class="memitem:a78c4f0289edf6c6c371118b2f290b750"><td class="memItemLeft" ><a id="a78c4f0289edf6c6c371118b2f290b750"></a>
union {</td></tr>
<tr class="memitem:ae05aa9edcb39636dba319232d16498e9"><td class="memItemLeft" >   std::chrono::system_clock::time_point   <a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a7175e9ba3f0dae6ae87fb3001ca47e61">st_birthtim</a></td></tr>
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<tr class="memitem:a40efc73a0eee503c070ae843754504d2"><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1stat__t.html#a40efc73a0eee503c070ae843754504d2">st_sparse</a>: 1</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Metadata about a directory entry. </p>
<p>This structure looks somewhat like a <code>struct stat</code>, and indeed it was derived from BSD's <code>struct stat</code>. However there are a number of changes to better interoperate with modern practice, specifically:</p>
<ul>
<li>inode value containers are forced to 64 bits.</li>
<li>Timestamps use C++11's <code>std::chrono::system_clock::time_point</code> or Boost equivalent. The resolution of these may or may not equal what a <code>struct timespec</code> can do depending on your STL.</li>
<li>The type of a file, which is available on Windows and on POSIX without needing an additional syscall, is provided by <code>st_type</code> which is one of the values from <code>filesystem::file_type</code>.</li>
<li>As type is now separate from permissions, there is no longer a <code>st_mode</code>, instead being a <code>st_perms</code> which is solely the permissions bits. If you want to test permission bits in <code>st_perms</code> but don't want to include platform specific headers, note that <code>filesystem::perms</code> contains definitions of the POSIX permissions flags.</li>
<li>The st_sparse and st_compressed flags indicate if your file is sparse and/or compressed, or if the directory will compress newly created files by default. Note that on POSIX, a file is sparse if and only if st_allocated < st_size which can include compressed files if that filing system is mounted with compression enabled (e.g. ZFS with ZLE compression which elides runs of zeros).</li>
<li>The st_reparse_point is a Windows only flag and is never set on POSIX, even on a NTFS volume. </li>
</ul>
</div><h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#aa08a4b9530403b4689498706b0738db4">◆ </a></span>fill()</h2>
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<p>Fills the structure with metadata.</p>
<dl class="section return"><dt>Returns</dt><dd>The number of items filled in. You should use a nullptr constructed structure if you wish to detect which items were filled in, and which not (those not may be all bits zero). </dd></dl>
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<td class="memname">result<want> llfio_v2_xxx::stat_t::stamp </td>
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<p>Stamps the handle with the metadata in the structure, returning the metadata written.</p>
<p>The following want bits are always ignored, and are cleared in the want bits returned:</p><ul>
<li><code>dev</code></li>
<li><code>ino</code></li>
<li><code>type</code></li>
<li><code>nlink</code></li>
<li><code>rdev</code></li>
<li><code>ctim</code></li>
<li><code>size</code> (use <code>truncate()</code> on the file instead)</li>
<li><code>allocated</code></li>
<li><code>blocks</code></li>
<li><code>blksize</code></li>
<li><code>flags</code></li>
<li><code>gen</code></li>
<li><code>sparse</code></li>
<li><code>compressed</code></li>
<li><code>reparse_point</code></li>
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<p>The following want bits are supported by these platforms:</p><ul>
<li><code>perms</code>, <code>uid</code>, <code>gid</code> (POSIX only)</li>
<li><code>atim</code> (Windows, POSIX)</li>
<li><code>mtim</code> (Windows, POSIX)</li>
<li><code>birthtim</code> (Windows, POSIX)</li>
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<p>Note that on POSIX, setting birth time involves two syscalls, the first of which temporarily sets the modified date to the birth time, which is racy. This is unavoidable given the syscall's design.</p>
<p>Note also that on POSIX one can never make a birth time newer than the current birth time, nor a modified time older than a birth time. You can do these on Windows, however. </p>
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<h2 class="groupheader">Member Data Documentation</h2>
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<p>bytes allocated for file (Windows, POSIX) </p>
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<p>time of last access (Windows, POSIX) </p>
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<p>time of file creation (Windows, POSIX) </p>
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<p>block size used by this device (Windows, POSIX) </p>
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<p>number of blocks allocated (Windows, POSIX) </p>
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<p>if this file is compressed, or this directory capable of compressed files (Windows, Linux) </p>
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<p>time of last status change (Windows, POSIX) </p>
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<p>inode of device containing file (POSIX only) </p>
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<p>user defined flags for file (FreeBSD, OS X, zero otherwise) </p>
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<p>file generation number (FreeBSD, OS X, zero otherwise) </p>
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<p>group ID of the file (POSIX only) </p>
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<p>inode of file (Windows, POSIX) </p>
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<p>time of last data modification (Windows, POSIX) </p>
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<p>number of hard links (Windows, POSIX) </p>
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<p>uint16_t bitfield perms of file (POSIX only) </p>
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<p>id of file if special (POSIX only) </p>
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<p>if this file or directory is a reparse point (Windows) </p>
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<p>file size, in bytes (Windows, POSIX) </p>
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<p>if this file is sparse, or this directory capable of sparse files (Windows, POSIX) </p>
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<td class="memname">filesystem::file_type llfio_v2_xxx::stat_t::st_type</td>
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<p>type of file (Windows, POSIX) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad42affc84324ad00a39379ab3d9a428b">◆ </a></span>st_uid</h2>
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<td class="memname">int16_t llfio_v2_xxx::stat_t::st_uid</td>
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<p>user ID of the file (POSIX only) </p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>include/llfio/v2.0/<a class="el" href="stat_8hpp.html">stat.hpp</a></li>
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