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<h1>db_env_set_func_close</h1>
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<h3><pre>
#include <db.h>
<p>
int
db_env_set_func_close(int (*func_close)(int fd));
</pre></h3>
<h1>Description</h1>
<p>Replace Berkeley DB calls to the IEEE/ANSI Std 1003.1 (POSIX) <b>close</b> interface
with <b>func_close</b>, which must conform to the standard interface.
<p>The db_env_set_func_close method configures all operations performed by a process and
all of its threads of control, not operations confined to a single
database environment.
<p>Although the db_env_set_func_close interface may be called at any time during the
life of the application, it should normally be called before making
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> methods.
<p>The db_env_set_func_close method returns a non-zero error value on failure and 0 on success.
<h1>Errors</h1>
<p>The db_env_set_func_close method may fail and return a non-zero error for the following conditions:
<p><dl compact>
<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
</dl>
<p>The db_env_set_func_close method may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions.
If a catastrophic error has occurred, the db_env_set_func_close method may fail and
return <a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a>,
in which case all subsequent Berkeley DB calls will fail in the same way.
<h1>See Also</h1>
<a href="../ref/program/runtime.html">Run-time configuration</a>
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