<!--$Id: env_set_lg_mode.so,v 1.1 2004/12/15 15:46:44 bostic Exp $--> <!--Copyright (c) 1997,2007 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DbEnv::set_lg_filemode</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td> <h3>DbEnv::set_lg_filemode</h3> </td> <td align=right> <a href="../../db46-devel-4.6.21/api_cxx/api_core.html"><img src="../../db46-devel-4.6.21/images/api.gif" alt="API"></a> <a href="../../db46-devel-4.6.21/ref/toc.html"><img src="../../db46-devel-4.6.21/images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <h3><pre> #include <db_cxx.h> <p> int DbEnv::set_lg_filemode(int lg_mode); <p> int DbEnv::get_lg_filemode(int *); </pre></h3> <hr size=1 noshade> <h3>Description: DbEnv::set_lg_filemode</h3> <p>Set the absolute file mode for created log files. This method is <b>only</b> useful for the rare Berkeley DB application that does not control its umask value.</p> <p>Normally, if Berkeley DB applications set their umask appropriately, all processes in the application suite will have read permission on the log files created by any process in the application suite. However, if the Berkeley DB application is a library, a process using the library might set its umask to a value preventing other processes in the application suite from reading the log files it creates. In this rare case, the DbEnv::set_lg_filemode method can be used to set the mode of created log files to an absolute value.</p> <p>The database environment's log file mode may also be configured using the environment's <b>DB_CONFIG</b> file. The syntax of the entry in that file is a single line with the string "set_lg_filemode", one or more whitespace characters, and the absolute mode of created log files. Because the <b>DB_CONFIG</b> file is read when the database environment is opened, it will silently overrule configuration done before that time.</p> <p>The DbEnv::set_lg_filemode method configures a database environment, not only operations performed using the specified <a href="../../db46-devel-4.6.21/api_cxx/env_class.html">DbEnv</a> handle.</p> <p>The DbEnv::set_lg_filemode method may be called at any time during the life of the application.</p> <p>The DbEnv::set_lg_filemode 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. </p> <h3>Parameters</h3> <dl compact> <dt><b>lg_filemode</b><dd>The <b>lg_filemode</b> parameter is the absolute mode of the created log file. </dl> <hr size=1 noshade> <h3>Description: DbEnv::set_lg_filemode</h3> <p>The DbEnv::set_lg_filemode method returns the log file mode.</p> <p>The DbEnv::set_lg_filemode method may be called at any time during the life of the application.</p> <p>The DbEnv::set_lg_filemode 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. </p> <h3>Parameters</h3> <dl compact> <dt><b>lg_modep</b><dd>The DbEnv::set_lg_filemode method returns the log file mode in <b>lg_modep</b>. </dl> <hr size=1 noshade> <h3>Class</h3> <a href="../../db46-devel-4.6.21/api_cxx/env_class.html">DbEnv</a>, <a href="../../db46-devel-4.6.21/api_cxx/logc_class.html">DbLogc</a>, <a href="../../db46-devel-4.6.21/api_cxx/lsn_class.html">DbLsn</a> <h3>See Also</h3> <a href="../../db46-devel-4.6.21/api_cxx/log_list.html">Logging Subsystem and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db46-devel-4.6.21/api_cxx/api_core.html"><img src="../../db46-devel-4.6.21/images/api.gif" alt="API"></a><a href="../../db46-devel-4.6.21/ref/toc.html"><img src="../../db46-devel-4.6.21/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2007 Oracle. All rights reserved.</font> </body> </html>