165 lines
4.7 KiB
HTML
165 lines
4.7 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>QlgOpen()--Open a File (using NLS-enabled path name)</title>
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<!-- Begin Header Records -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Change History: -->
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<!-- YYMMDD USERID Change description -->
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<!-- Created by Yvonne Griffin for V5R1-->
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<!-- This file has undergone html cleanup June 2002 by JET -->
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<!-- End Header Records -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<!--Java sync-link-->
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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>QlgOpen()--Open a File (using NLS-enabled path name)</h2>
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<div class="box" style="width: 70%;">
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<br>
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Syntax<br>
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<pre>
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#include <fcntl.h>
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#include <stdio.h>
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#include <Qp0lstdi.h>
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int QlgOpen(Qlg_Path_Name_T <em>*Path_Name</em>,
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int <em>oflag</em>, . . .);
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</pre>
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Service Program Name: QP0LLIB1<br>
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<!-- iddvc RMBR -->
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Conditional; see Usage Notes for <a href="open.htm">open()</a> API.<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>QlgOpen()</strong> function, like the <strong>open()</strong>
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function, opens a file or creates a new, empty file whose name is defined by
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<em>path</em> and returns a number called a <strong>file descriptor</strong>.
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The difference is that the <strong>QlgOpen()</strong> function takes a pointer
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to a Qlg_Path_Name_T structure, while <strong>open()</strong> takes a pointer
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to a character string.</p>
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<p>Limited information on the <em>path</em> parameter is provided here. For
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more information on the <em>path</em> parameter and for a discussion of other
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parameters, authorities required, usage notes, return values, and related
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information, see <a href="open.htm">open()</a>--Open a File.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong><em>path</em></strong></dt>
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<dd>(Input) A pointer to a Qlg_Path_Name_T structure that contains a path name
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or a pointer to a path name of the file to be opened. For more information on
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the Qlg_Path_Name_T structure, see <a href="../apiref/pns.htm">Path name format</a>.</dd>
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</dl>
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<br>
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<h3>Related Information</h3>
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<ul>
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<li><a href="open.htm">open()</a>--Open a File<br>
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<br>
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</li>
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<li><a href="creatu.htm">QlgCreat()</a>--Create or Rewrite File (using
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NLS-enabled path name)<br>
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<br>
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</li>
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<li><a href="open64u.htm">QlgOpen64()</a>--Open File (large file enabled and
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using NLS-enabled path name)<br>
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<br>
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</li>
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<li><a href="statu.htm">QlgStat()</a>--Get File Information (using
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NLS-enabled path name)</li>
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</ul>
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<br>
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<h3>Example</h3>
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<p>See <a href="../apiref/aboutapis.htm#codedisclaimer">Code disclaimer information</a>
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for information pertaining to code examples.</p>
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<p>The following example creates and opens an output file for exclusive access.
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This program was stored in a source file with CCSID 37, so the constant string
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"newfile" will be compiled in CCSID 37. Therefore, the language and country or
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region specified are United States English, and the CCSID specified is 37.</p>
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<pre>
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#include <fcntl.h>
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#include <stdio.h>
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#include <Qp0lstdi.h>
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main()
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{
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int fildes;
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const char US_const[3]= "US";
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const char Language_const[4]="ENU";
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struct pnstruct
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{
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Qlg_Path_Name_T qlg_struct;
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char pn[7];
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};
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struct pnstruct pns;
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struct pnstruct *pns_ptr = NULL;
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char fn[]="newfile";
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memset((void*)&pns, 0x00, sizeof(struct pnstruct));
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pns.qlg_struct.CCSID = 37;
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memcpy(pns.qlg_struct.Country_ID,US_const,2);
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memcpy(pns.qlg_struct.Language_ID,Language_const,3);;
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pns.qlg_struct.Path_Type = 0;
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pns.qlg_struct.Path_Length = sizeof(fn) - 1;
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pns.qlg_struct.Path_Name_Delimiter[0] = '/';
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memcpy(pns.pn,fn,sizeof(fn)-1);
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pns_ptr = &pns;
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if(fildes = QlgOpen((Qlg_Path_Name_T *)pns_ptr,
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O_WRONLY|O_CREAT|O_EXCL, S_IRWXU)) == -1)
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{
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perror("QlgOpen() error");
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}
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}
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</pre>
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<hr>
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API introduced: V5R1
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a></td>
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</tr>
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</table>
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</center>
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</body>
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</html>
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