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<h2 class="title" style="clear: both"><a id="db_env_set_func_dirlist"></a>db_env_set_func_dirlist</h2>
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<pre class="programlisting">#include <db.h>
int
db_env_set_func_dirlist(int (*func_dirlist)(const char *dir,
char ***namesp, int *cntp)); </pre>
<p>
The Berkeley DB library requires the ability to read through a
directory and create a list of files that the directory contains.
</p>
<p>
The db_env_set_func_dirlist method configures all operations performed
by a process and all of its threads of control, not operations
confined to a single database environment.
</p>
<p>
Although the db_env_set_func_dirlist method may be called at any time
during the life of the application, it should normally be called
before making calls to the <a class="xref" href="envcreate.html" title="db_env_create">db_env_create</a> or
<a class="xref" href="dbcreate.html" title="db_create">db_create</a> methods.
</p>
<p>
The <code class="function">db_env_set_func_dirlist()</code> <span>
function returns a non-zero error value on failure and 0 on success.
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<h4 class="title"><a id="idp55576768"></a>func_dirlist</h4>
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<p>
The <span class="bold"><strong>func_dirlist</strong></span> parameter is the
function which reads through a directory and returns a list of the
files it contains.
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The <span class="bold"><strong>dir</strong></span> parameter to this function 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
names into the memory location to which the <span class="bold"><strong>namesp</strong></span> parameter refers, and a count of the
number of elements in the array into the memory location to which
<span class="bold"><strong>cntp</strong></span> refers.
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<a href="../../programmer_reference/program_runtime.html" class="olink">Run-time configuration</a>
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