101 lines
3.2 KiB
HTML
101 lines
3.2 KiB
HTML
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Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009, 2013
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The President and Fellows of Harvard College.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the University nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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SUCH DAMAGE.
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-->
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<html>
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<head>
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<title>getcwd</title>
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<link rel="stylesheet" type="text/css" media="all" href="../man.css">
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</head>
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<body bgcolor=#ffffff>
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<h2 align=center>getcwd</h2>
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<h4 align=center>OS/161 Reference Manual</h4>
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<h3>Name</h3>
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<p>
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getcwd - get name of current working directory
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</p>
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<h3>Library</h3>
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<p>
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Standard C Library (libc, -lc)
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</p>
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<h3>Synopsis</h3>
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<p>
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<tt>#include <unistd.h></tt><br>
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<br>
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<tt>char *</tt><br>
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<tt>getcwd(char *</tt><em>buf</em><tt>, size_t </tt><em>buflen</em><tt>);</tt>
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</p>
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<h3>Description</h3>
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<p>
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The name of the current directory is computed and stored in
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<em>buf</em>, an area of size <em>buflen</em>. The resulting string is
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0-terminated.
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</p>
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<p>
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This call is a wrapper (for Unix compatibility) around the system call
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<A HREF=../syscall/__getcwd.html>__getcwd</A>.
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</p>
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<p>
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Note, however, that the BSD extension whereby space is allocated with
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<A HREF=malloc.html>malloc</A> if <em>buf</em> is <tt>NULL</tt> is not
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supported.
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</p>
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<h3>Return Values</h3>
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<p>
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On success, <tt>getcwd</tt> returns <em>buf</em>.
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On error, <tt>NULL</tt> is returned, and <A HREF=errno.html>errno</A>
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is set according to the error encountered.
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</p>
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<h3>Errors</h3>
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<p>
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The following error codes should be returned under the conditions
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given. Other error codes may be returned for other errors not
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mentioned here.
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</p>
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<table width=90%>
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<tr><td width=5% rowspan=3> </td>
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<td>ENOENT</td>
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<td width=5% rowspan=3> </td>
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<td>A component of the pathname no longer exists.</td></tr>
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<tr><td>EIO</td>
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<td>A hard I/O error occurred.</td></tr>
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<tr><td>EFAULT</td>
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<td><em>buf</em> points to an invalid address.</td></tr>
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</table>
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</body>
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</html>
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