193 lines
6.0 KiB
HTML
193 lines
6.0 KiB
HTML
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<!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>QlgLchown()--Change Owner and Group of Symbolic Link (using NLS-enabled
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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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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<!-- End Header Records --><!--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>QlgLchown()--Change Owner and Group of Symbolic Link (using NLS-enabled
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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 <unistd.h>
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int QlgLchown(Qlg_Path_Name_T <em>*path</em>, uid_t <em>owner</em>,gid_t
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<em>group</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=
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"lchown.htm">lchown()</a>.<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>QlgLchown()</strong> function, like the <strong>
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lchown()</strong> function, changes the owner and group of a file. The
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difference is that the <strong>QlgLchown()</strong> function takes a pointer to
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a Qlg_Path_Name_T structure, while <strong>lchown()</strong> takes a pointer to
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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 on the <em>path</em> parameter and for a discussion of other parameters,
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authorities required, return values, and related information, see <a href=
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"lchown.htm">lchown()</a>--Change Owner and Group of Symbolic Link.</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 whose owner and group are being
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changed. For more information on the Qlg_Path_Name_T structure, see <a href=
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"../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="lchown.htm">lchown()</a>--Change Owner and Group of Symbolic
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Link<br>
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<br>
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</li>
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<li><a href="chmodu.htm">QlgChmod()</a>--Change File Authorizations<br>
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<br>
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</li>
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<li><a href="lstatu.htm">QlgLstat()</a>--Get File or Link Information<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</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 changes the owner and group of a file:</p>
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<pre>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <Qp0lstdi.h>
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main() {
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#define mypath_link_name "temp.link"
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#define mypath_fn "temp.file"
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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 stat info;
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typedef struct pnstruct
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{
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Qlg_Path_Name_T qlg_struct;
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char pn]100[; /* This array size must be >= the */
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/* length of the path name or this must */
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/* be a pointer to the path name. */
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};
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struct pnstruct path_link;
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struct pnstruct path_fn;
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/***************************************************************/
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/* Initialize Qlg_Path_Name_T parameters */
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/***************************************************************/
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memset((void*)&path_link, 0x00, sizeof(struct pnstruct));
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path_link.qlg_struct.CCSID = 37;
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memcpy(path_link.qlg_struct.Country_ID,US_const,2);
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memcpy(path_link.qlg_struct.Language_ID,Language_const,3);
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path_link.qlg_struct.Path_Type = QLG_CHAR_SINGLE;
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path_link.qlg_struct.Path_Length = sizeof(mypath_link_name)-1;
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path_link.qlg_struct.Path_Name_Delimiter]0[ = '/';
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memcpy(path_link.pn,mypath_link_name,sizeof(mypath_link_name)-1);
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memset((void*)&path_fn, 0x00, sizeof(struct pnstruct));
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path_fn.qlg_struct.CCSID = 37;
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memcpy(path_fn.qlg_struct.Country_ID,US_const,2);
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memcpy(path_fn.qlg_struct.Language_ID,Language_const,3);
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path_fn.qlg_struct.Path_Type = QLG_CHAR_SINGLE;
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path_fn.qlg_struct.Path_Length = sizeof(mypath_fn)-1;
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path_fn.qlg_struct.Path_Name_Delimiter]0[ = '/';
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memcpy(path_fn.pn,mypath_fn,sizeof(mypath_fn)-1);
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if (QlgSymlink((Qlg_Path_Name_T *)&path_fn,
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(Qlg_Path_Name_T *)&path_link) == -1)
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perror("QlgSymlink() error");
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else {
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QlgLstat((Qlg_Path_Name_T *)&path_link, &info);
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printf("original owner was %d and group was %d\n", info.st_uid,
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info.st_gid);
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if (QlgLchown((Qlg_Path_Name_T *)&path_link, 152, 0) != 0)
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perror("QlgLchown() error");
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else {
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QlgLstat((Qlg_Path_Name_T *)&path_link, &info);
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printf("after QlgLchown(), owner is %d and group is %d\n",
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info.st_uid, info.st_gid);
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}
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QlgUnlink((Qlg_Path_Name_T *)&path_link);
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}
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}
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</pre>
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<p><strong>Output:</strong></p>
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<pre>
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original owner was 137 and group was 0
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after QlgLchown(), owner is 152 and group is 0
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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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