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4.0 KiB
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<!--$Id: set_func_dirlist.so,v 10.6 2000/05/31 15:10:00 bostic Exp $-->
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<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
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<!--All rights reserved.-->
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<html>
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<head>
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<title>Berkeley DB: db_env_set_func_dirlist</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
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</head>
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<body bgcolor=white>
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<a name="2"><!--meow--></a>
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<table><tr valign=top>
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<td>
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<h1>db_env_set_func_dirlist</h1>
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</td>
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<td width="1%">
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<a href="../api_c/c_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
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</td></tr></table>
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<hr size=1 noshade>
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<tt>
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<h3><pre>
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#include <db.h>
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<p>
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int
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db_env_set_func_dirlist(
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int (*func_dirlist)(const char *dir, char ***namesp, int *cntp));
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</pre></h3>
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<h1>Description</h1>
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<p>The Berkeley DB library requires the ability to read through a directory and
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create a list of files that that the directory contains. The
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<b>func_dirlist</b> argument must conform to the following interface:
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<p><blockquote><pre>int dirlist(const char *dir, char ***namesp, int *cntp);</pre></blockquote>
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<p>The <b>dir</b> argument is the name of the directory to be searched.
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The function must return a pointer to an array of nul-terminated file
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names in the memory location referenced by the argument <b>namesp</b>,
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and a count of the number of elements in the array in the memory location
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referenced by <b>cntp</b>.
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<p>The <b>func_dirlist</b> function must return the value of <b>errno</b> on
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failure and 0 on success.
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<p>The db_env_set_func_dirlist interface affects the entire application, not a single
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database or database environment.
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<p>While the db_env_set_func_dirlist interface may be used to configure Berkeley DB at any time
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during the life of the application, it should normally be called before
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making any calls to the <a href="../api_c/env_create.html">db_env_create</a> or <a href="../api_c/db_create.html">db_create</a> functions.
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<p>The db_env_set_func_dirlist interface may only be used to configure Berkeley DB before
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the <a href="../api_c/env_open.html">DBENV->open</a> interface is called.
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<p>The db_env_set_func_dirlist function returns a non-zero error value on failure and 0 on success.
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<h1>Errors</h1>
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<p><dl compact>
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<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
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</dl>
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<h1>See Also</h1>
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<a href="../api_c/set_func_close.html">db_env_set_func_close</a>,
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<a href="../api_c/set_func_dirfree.html">db_env_set_func_dirfree</a>,
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<a href="../api_c/set_func_dirlist.html">db_env_set_func_dirlist</a>,
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<a href="../api_c/set_func_exists.html">db_env_set_func_exists</a>,
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<a href="../api_c/set_func_free.html">db_env_set_func_free</a>,
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<a href="../api_c/set_func_fsync.html">db_env_set_func_fsync</a>,
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<a href="../api_c/set_func_ioinfo.html">db_env_set_func_ioinfo</a>,
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<a href="../api_c/set_func_malloc.html">db_env_set_func_malloc</a>,
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<a href="../api_c/set_func_map.html">db_env_set_func_map</a>,
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<a href="../api_c/set_func_open.html">db_env_set_func_open</a>,
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<a href="../api_c/set_func_read.html">db_env_set_func_read</a>,
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<a href="../api_c/set_func_realloc.html">db_env_set_func_realloc</a>,
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<a href="../api_c/set_func_seek.html">db_env_set_func_seek</a>,
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<a href="../api_c/set_func_sleep.html">db_env_set_func_sleep</a>,
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<a href="../api_c/set_func_unlink.html">db_env_set_func_unlink</a>,
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<a href="../api_c/set_func_unmap.html">db_env_set_func_unmap</a>,
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<a href="../api_c/set_func_write.html">db_env_set_func_write</a>
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and
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<a href="../api_c/set_func_yield.html">db_env_set_func_yield</a>.
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</tt>
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<table><tr><td><br></td><td width="1%">
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<a href="../api_c/c_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
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</td></tr></table>
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<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
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