<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>DbEnv::set_intermediate_dir_mode()</title> <link rel="stylesheet" href="apiReference.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> <link rel="start" href="index.html" title="Berkeley DB C++ API Reference" /> <link rel="up" href="env.html" title="Chapter 5. The DbEnv Handle" /> <link rel="prev" href="envset_flags.html" title="DbEnv::set_flags()" /> <link rel="next" href="envset_isalive.html" title="DbEnv::set_isalive()" /> </head> <body> <div xmlns="" class="navheader"> <div class="libver"> <p>Library Version 11.2.5.3</p> </div> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">DbEnv::set_intermediate_dir_mode()</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="envset_flags.html">Prev</a> </td> <th width="60%" align="center">Chapter 5. The DbEnv Handle </th> <td width="20%" align="right"> <a accesskey="n" href="envset_isalive.html">Next</a></td> </tr> </table> <hr /> </div> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="envset_intermediate_dir_mode"></a>DbEnv::set_intermediate_dir_mode()</h2> </div> </div> </div> <pre class="programlisting">#include <db_cxx.h> int DbEnv::set_intermediate_dir_mode(u_int32_t mode); </pre> <p> By default, Berkeley DB does not create intermediate directories needed for recovery, that is, if the file <span class="bold"><strong>/a/b/c/mydatabase</strong></span> is being recovered, and the directory path <span class="bold"><strong>b/c</strong></span> does not exist, recovery will fail. This default behavior is because Berkeley DB does not know what permissions are appropriate for intermediate directory creation, and creating the directory might result in a security problem. </p> <p> The <code class="methodname">DbEnv::set_intermediate_dir_mode()</code> method causes Berkeley DB to create any intermediate directories needed during recovery, using the specified permissions. </p> <p> On UNIX systems or in IEEE/ANSI Std 1003.1 (POSIX) environments, created directories are owned by the process owner; the group ownership of created directories is based on the system and directory defaults, and is not further specified by Berkeley DB. </p> <p> The database environment's intermediate directory permissions may also be configured using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file. The syntax of the entry in that file is a single line with the string "set_intermediate_dir_mode", one or more whitespace characters, and the directory permissions. Because the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read when the database environment is opened, it will silently overrule configuration done before that time. </p> <p> The <code class="methodname">DbEnv::set_intermediate_dir_mode()</code> method configures operations performed using the specified <a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a> handle, not all operations performed on the underlying database environment. </p> <p> The <code class="methodname">DbEnv::set_intermediate_dir_mode()</code> method may not be called after the <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> method is called. </p> <p> The <code class="methodname">DbEnv::set_intermediate_dir_mode()</code> <span> <span> method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success. </span> </span> </p> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp7402192"></a>Parameters</h3> </div> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp7374304"></a>mode</h4> </div> </div> </div> <p> The <span class="bold"><strong>mode</strong></span> parameter specifies the directory permissions. </p> <p> Directory permissions are interpreted as a string of nine characters, using the character set <span class="bold"><strong>r</strong></span> (read), <span class="bold"><strong>w</strong></span> (write), <span class="bold"><strong>x</strong></span> (execute or search), and <span class="bold"><strong>-</strong></span> (none). The first character is the read permissions for the directory owner (set to either <span class="bold"><strong>r</strong></span> or <span class="bold"><strong>-</strong></span>). The second character is the write permissions for the directory owner (set to either <span class="bold"><strong>w</strong></span> or <span class="bold"><strong>-</strong></span>). The third character is the execute permissions for the directory owner (set to either <span class="bold"><strong>x</strong></span> or <span class="bold"><strong>-</strong></span>). </p> <p> Similarly, the second set of three characters are the read, write and execute/search permissions for the directory group, and the third set of three characters are the read, write and execute/search permissions for all others. For example, the string <span class="bold"><strong>rwx------</strong></span> would configure read, write and execute/search access for the owner only. The string <span class="bold"><strong>rwxrwx---</strong></span> would configure read, write and execute/search access for both the owner and the group. The string <span class="bold"><strong>rwxr-----</strong></span> would configure read, write and execute/search access for the directory owner and read-only access for the directory group. </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp7375744"></a>Errors</h3> </div> </div> </div> <p> The <code class="methodname">DbEnv::set_intermediate_dir_mode()</code> <span> <span> method may fail and throw a <a class="link" href="dbexception.html" title="Chapter 6. The DbException Class">DbException</a> exception, encapsulating one of the following non-zero errors, or return one of the following non-zero errors: </span> </span> </p> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp7473664"></a>EINVAL</h4> </div> </div> </div> <p> If the method was called after <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> was called; or if an invalid flag value or parameter was specified. </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp7474992"></a>Class</h3> </div> </div> </div> <p> <a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a> </p> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp7392560"></a>See Also</h3> </div> </div> </div> <p> <a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a> </p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="envset_flags.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="env.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="envset_isalive.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">DbEnv::set_flags() </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> DbEnv::set_isalive()</td> </tr> </table> </div> </body> </html>