1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2<html xml:lang="en-US" lang="en-US" xmlns="http://www.w3.org/1999/xhtml">
3  <head>
4    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
5    <meta http-equiv="Content-Style-Type" content="text/css" />
6    <link rel="stylesheet" href="../../css/manpage.css" type="text/css" />
7<title>CreateFile</title>
8  </head>
9  <body>
10<h1><CODE><a href="../../nn/Overview.html">nn</a>::<a href="../../nn/fs/Overview.html">fs</a>::CreateFile</CODE> Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">
14void CreateFile(
15     const wchar_t * pathName,
16     <a href="../../nn_types/s64.html">s64</a> size
17);
18
19void CreateFile(
20     const char * pathName,
21     <a href="../../nn_types/s64.html">s64</a> size
22);
23</pre>
24    </div>
25<h2>List of Overloaded Member Functions</h2>
26    <div class="section">
27      <table class="members">
28        <tr>
29          <td>
30<a href="./CreateFile(0).html">CreateFile ( const wchar_t *, s64 ) </a>
31          </td>
32<td>Creates a file.</td>
33        </tr>
34        <tr>
35          <td>
36<a href="./CreateFile(1).html">CreateFile ( const char *, s64 ) </a>
37          </td>
38<td>Creates a file.</td>
39        </tr> </table>
40    </div>
41<h2>Description of <CODE>CreateFile(const wchar_t *, s64)</CODE></h2>
42    <div class="section"><p>
43This function is implemented to show an error screen when errors occur internally, whether or not such errors are fatal. Control does not return from the function in this case. Use <CODE><a href="../../nn/fs/TryCreateFile.html">nn::fs::TryCreateFile</a></CODE> on everything other than ROM archives.
44            </p><p>
45To read details about error handling, see <a href="briefing/aboutErrorHandling.html#FileAndDirectory">Handling Errors During File and Directory Operations</a>.
46</p><h3>Note</h3><div class="section">
47After the size has been extended with this function, if nothing has been written to that region, then in principle the process of reading that region will return <a href="../../nn/fs/ResultVerificationFailed/Overview.html"><CODE>nn::fs::ResultVerificationFailed</CODE></a>. However, if this function is called for save data or expanded save data, then the first 512 bytes (or the entire file if the size is 512 bytes or smaller) are guaranteed to be zero-initialized. By using this and writing to the file in the order (Create file &gt; Write data and flush &gt; Write file signature to front and flush), you can check that the file signature has been loaded correctly and guarantee that the file is written correctly.
48            </div></div>
49<h2>Description of <CODE>CreateFile ( const char *, s64 )</CODE></h2>
50<div class="section"><p><BR><B>Note:</B> This function uses a large amount of buffer space on the stack because it converts the path name from a multibyte character string into a wide character string. Pay careful attention to the stack size.</p><p>
51This function is implemented to show an error screen when errors occur internally, whether or not such errors are fatal. Control does not return from the function in this case. Use <CODE><a href="../../nn/fs/TryCreateFile.html">nn::fs::TryCreateFile</a></CODE> on everything other than ROM archives.
52            </p><p>
53To read details about error handling, see <a href="briefing/aboutErrorHandling.html#FileAndDirectory">Handling Errors During File and Directory Operations</a>.
54</p><h3>Note</h3><div class="section">
55After the size has been extended with this function, if nothing has been written to that region, then in principle the process of reading that region will return <a href="../../nn/fs/ResultVerificationFailed/Overview.html"><CODE>nn::fs::ResultVerificationFailed</CODE></a>. However, if this function is called for save data or expanded save data, then the first 512 bytes (or the entire file if the size is 512 bytes or smaller) are guaranteed to be zero-initialized. By using this and writing to the file in the order (Create file &gt; Write data and flush &gt; Write file signature to front and flush), you can check that the file signature has been loaded correctly and guarantee that the file is written correctly.
56            </div></div>
57  <hr><p>CONFIDENTIAL</p></body>
58</html>