98 lines
3.2 KiB
HTML
98 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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-->
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<html>
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<head>
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<title>chdir</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>chdir</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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chdir - change current 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>int</tt><br>
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<tt>chdir(const char *</tt><em>pathname</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 current directory of the current process is set to the directory
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named by <em>pathname</em>.
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</p>
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<p>
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<tt>chdir</tt> (like all system calls) should be atomic.
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Note that the kernel is not obliged to (and generally cannot) make the
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chdir call atomic with respect to other threads in the same
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process accessing the pathname string during the operation.
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</p>
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<h3>Return Values</h3>
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<p>
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On success, chdir returns 0. On error, -1 is returned, and
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<A HREF=errno.html>errno</A> is set according to the error
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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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<table width=90%>
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<tr><td width=5% rowspan=6> </td>
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<td width=10%>ENODEV</td>
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<td>The device prefix of <em>pathname</em> did
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not exist.</td></tr>
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<tr><td>ENOTDIR</td> <td>A non-final component of <em>pathname</em>
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was not a directory.</td></tr>
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<tr><td>ENOTDIR</td> <td><em>pathname</em> did not refer to a
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directory.</td>
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<tr><td>ENOENT</td> <td><em>pathname</em> did not exist.</td></tr>
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<tr><td>EIO</td> <td>A hard I/O error occurred.</td></tr>
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<tr><td>EFAULT</td> <td><em>pathname</em> was an invalid pointer.</td></tr>
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</table>
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</p>
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</body>
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</html>
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