74 lines
1.9 KiB
HTML
74 lines
1.9 KiB
HTML
<HTML>
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<HEAD>
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<TITLE>chroot(2)</TITLE>
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</HEAD>
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<BODY>
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<H1>chroot(2)</H1>
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<HR>
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<PRE>
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</PRE>
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<H2>NAME</H2><PRE>
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chroot - change root directory
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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<STRONG>#include</STRONG> <STRONG><unistd.h></STRONG>
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<STRONG>int</STRONG> <STRONG>chroot(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>dirname</EM><STRONG>)</STRONG>
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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<EM>Dirname</EM> is the address of the pathname of a directory, terminated by a
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null byte. <STRONG>Chroot</STRONG> causes this directory to become the root directory,
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the starting point for path names beginning with ``/''.
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In order for a directory to become the root directory a process must have
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execute (search) access to the directory.
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This call is restricted to the super-user.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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Upon successful completion, a value of 0 is returned. Otherwise, a value
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of -1 is returned and <STRONG>errno</STRONG> is set to indicate an error.
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</PRE>
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<H2>ERRORS</H2><PRE>
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<STRONG>Chroot</STRONG> will fail and the root directory will be unchanged if one or more
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of the following are true:
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[ENOTDIR] A component of the path name is not a directory.
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[ENAMETOOLONG] The path name exceeds PATH_MAX characters.
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[ENOENT] The named directory does not exist.
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[EACCES] Search permission is denied for any component of the path
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name.
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[ELOOP] Too many symbolic links were encountered in translating
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the pathname. (Minix-vmd)
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[EFAULT] <EM>Path</EM> points outside the process's allocated address space.
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[EIO] An I/O error occurred while reading from or writing to the
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file system.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<STRONG><A HREF="../man2/chdir.2.html">chdir(2)</A></STRONG>.
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</PRE>
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</BODY>
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</HTML>
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