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