107 lines
3.8 KiB
HTML
107 lines
3.8 KiB
HTML
<!--
|
|
Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009, 2013
|
|
The President and Fellows of Harvard College.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
3. Neither the name of the University nor the names of its contributors
|
|
may be used to endorse or promote products derived from this software
|
|
without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
|
|
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
|
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
SUCH DAMAGE.
|
|
-->
|
|
<html>
|
|
<head>
|
|
<title>link</title>
|
|
<link rel="stylesheet" type="text/css" media="all" href="../man.css">
|
|
</head>
|
|
<body bgcolor=#ffffff>
|
|
<h2 align=center>link</h2>
|
|
<h4 align=center>OS/161 Reference Manual</h4>
|
|
|
|
<h3>Name</h3>
|
|
<p>
|
|
link - create hard link to a file
|
|
</p>
|
|
|
|
<h3>Library</h3>
|
|
<p>
|
|
Standard C Library (libc, -lc)
|
|
</p>
|
|
|
|
<h3>Synopsis</h3>
|
|
<p>
|
|
<tt>#include <unistd.h></tt><br>
|
|
<br>
|
|
<tt>int</tt><br>
|
|
<tt>link(const char *</tt><em>oldname</em><tt>,
|
|
const char *</tt><em>newname</em><tt>);</tt>
|
|
</p>
|
|
|
|
<h3>Description</h3>
|
|
<p>
|
|
<tt>link</tt> creates a new name, <em>newname</em>, for the file
|
|
referred to by <em>oldname</em>. Henceforth, both names are equally
|
|
valid ways to refer to the same file. The file is only deleted when
|
|
all names are removed. This is a "hard link".
|
|
</p>
|
|
|
|
<p>
|
|
The creation of the new name is atomic. The two names must be on the
|
|
same filesystem. Directories may not be hard-linked.
|
|
</p>
|
|
|
|
<h3>Return Values</h3>
|
|
<p>
|
|
On success, <tt>link</tt> returns 0. On error, -1 is returned, and <A
|
|
HREF=errno.html>errno</A> is set according to the error encountered.
|
|
</p>
|
|
|
|
<h3>Errors</h3>
|
|
<p>
|
|
The following error codes should be returned under the conditions
|
|
given. Other error codes may be returned for other cases not
|
|
mentioned here.
|
|
|
|
<table width=90%>
|
|
<tr><td width=5% rowspan=11> </td>
|
|
<td width=10% valign=top>ENODEV</td>
|
|
<td>The device prefix of one of the names did
|
|
not exist.</td></tr>
|
|
<tr><td valign=top>ENOTDIR</td> <td>A non-final component of one of the names
|
|
was not a directory.</td></tr>
|
|
<tr><td valign=top>ENOENT</td> <td>A non-final component of <em>newname</em>
|
|
did not exist.</td></tr>
|
|
<tr><td valign=top>ENOENT</td> <td><em>oldname</em> does not exist.</td></tr>
|
|
<tr><td valign=top>EEXIST</td> <td><em>newname</em> already exists.</td></tr>
|
|
<tr><td valign=top>EISDIR</td> <td><em>oldname</em> is a directory.</td></tr>
|
|
<tr><td valign=top>EXDEV</td> <td>The two names are on different
|
|
filesystems.</td></tr>
|
|
<tr><td valign=top>EMLINK</td> <td>There are already too many links to
|
|
<em>oldname</em>.</td></tr>
|
|
<tr><td valign=top>ENOSPC</td> <td>The filesystem involved is full.</td></tr>
|
|
<tr><td valign=top>EIO</td> <td>A hard I/O error occurred.</td></tr>
|
|
<tr><td valign=top>EFAULT</td> <td>One of the arguments was an
|
|
invalid pointer.</td></tr>
|
|
</table>
|
|
</p>
|
|
|
|
</body>
|
|
</html>
|