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123 lines
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HTML
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<title>db_env_set_func_pwrite</title>
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<link rel="start" href="index.html" title="Berkeley DB C API Reference" />
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<link rel="up" href="setfunc.html" title="Appendix C. Berkeley DB Application Space Static Functions" />
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<link rel="prev" href="db_env_set_func_pread.html" title="db_env_set_func_pread" />
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<p>Library Version 11.2.5.3</p>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">db_env_set_func_pwrite</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="db_env_set_func_pread.html">Prev</a> </td>
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<th width="60%" align="center">Appendix C.
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Berkeley DB Application Space Static Functions
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="db_env_set_func_read.html">Next</a></td>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="db_env_set_func_pwrite"></a>db_env_set_func_pwrite</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">#include <db.h>
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int
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db_env_set_func_pwrite(ssize_t (*func_pwrite)(int fd, const void *buf,
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size_t nbytes, off_t offset)); </pre>
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<p>
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Replace Berkeley DB calls to the IEEE/ANSI Std 1003.1 (POSIX)
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<span class="bold"><strong>pwrite</strong></span> function with <span class="bold"><strong>func_pwrite</strong></span>, which must conform to the standard
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interface specification.
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</p>
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<p>
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The <code class="function">db_env_set_func_pwrite()</code> configures all operations performed
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by a process and all of its threads of control, not operations
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confined to a single database environment.
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</p>
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<p>
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Although the <code class="function">db_env_set_func_pwrite()</code> may be called at any time
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during the life of the application, it should normally be called
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before making calls to the <a class="xref" href="envcreate.html" title="db_env_create">db_env_create</a> or
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<a class="xref" href="dbcreate.html" title="db_create">db_create</a> methods.
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</p>
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<p>
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The <code class="function">db_env_set_func_pwrite()</code> <span>
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function returns a non-zero error value on failure and 0 on success.
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</span>
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</p>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="idp63631008"></a>Parameters</h3>
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</div>
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</div>
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</div>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="idp63631200"></a>func_pwrite</h4>
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</div>
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</div>
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</div>
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<p>
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The <span class="bold"><strong>func_pwrite</strong></span> parameter is the
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replacement function. It must conform to the standard interface
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specification.
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</p>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="idp63629808"></a>See Also</h3>
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</div>
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</div>
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</div>
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<p>
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<a href="../../programmer_reference/program_runtime.html" class="olink">Run-time configuration</a>
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</p>
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<td width="40%" align="left"><a accesskey="p" href="db_env_set_func_pread.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="setfunc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="db_env_set_func_read.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">db_env_set_func_pread </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> db_env_set_func_read</td>
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