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<!-- keywords: SQLITE_ACCESS_EXISTS SQLITE_ACCESS_READ SQLITE_ACCESS_READWRITE -->
<div class=nosearch>
<a href="intro.html"><h2>SQLite C Interface</h2></a>
<h2>Flags for the xAccess VFS method</h2>
</div>
<blockquote><pre>
#define SQLITE_ACCESS_EXISTS 0
#define SQLITE_ACCESS_READWRITE 1 /* Used by PRAGMA temp_store_directory */
#define SQLITE_ACCESS_READ 2 /* Unused */
</pre></blockquote>
<p>
These integer constants can be used as the third parameter to
the xAccess method of an <a href="../c3ref/vfs.html">sqlite3_vfs</a> object. They determine
what kind of permissions the xAccess method is looking for.
With SQLITE_ACCESS_EXISTS, the xAccess method
simply checks whether the file exists.
With SQLITE_ACCESS_READWRITE, the xAccess method
checks whether the named directory is both readable and writable
(in other words, if files can be added, removed, and renamed within
the directory).
The SQLITE_ACCESS_READWRITE constant is currently used only by the
<a href="../pragma.html#pragma_temp_store_directory">temp_store_directory pragma</a>, though this could change in a future
release of SQLite.
With SQLITE_ACCESS_READ, the xAccess method
checks whether the file is readable. The SQLITE_ACCESS_READ constant is
currently unused, though it might be used in a future release of
SQLite.
</p><p>See also lists of
<a href="objlist.html">Objects</a>,
<a href="constlist.html">Constants</a>, and
<a href="funclist.html">Functions</a>.</p>
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