63 lines
1.6 KiB
Groff
63 lines
1.6 KiB
Groff
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.\" Copyright (c) 1983 Regents of the University of California.
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.\" All rights reserved. The Berkeley software License Agreement
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.\" specifies the terms and conditions for redistribution.
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.\"
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.\" @(#)chroot.2 6.3 (Berkeley) 8/26/85
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.\"
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.TH CHROOT 2 "August 26, 1985"
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.UC 5
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.SH NAME
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chroot \- change root directory
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.SH SYNOPSIS
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.nf
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.ft B
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#include <unistd.h>
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int chroot(const char *\fIdirname\fP)
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.ft R
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.fi
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.SH DESCRIPTION
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.I Dirname
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is the address of the pathname of a directory, terminated by a null byte.
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.B Chroot
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causes this directory
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to become the root directory,
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the starting point for path names beginning with ``/''.
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.PP
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In order for a directory to become the root directory
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a process must have execute (search) access to the directory.
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.PP
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This call is restricted to the super-user.
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.SH "RETURN VALUE
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Upon successful completion, a value of 0 is returned. Otherwise,
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a value of \-1 is returned and \fBerrno\fP is set to indicate an error.
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.SH ERRORS
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.B Chroot
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will fail and the root directory will be unchanged if
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one or more of the following are true:
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.TP 15
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[ENOTDIR]
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A component of the path name is not a directory.
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.TP 15
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[ENAMETOOLONG]
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The path name exceeds PATH_MAX characters.
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.TP 15
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[ENOENT]
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The named directory does not exist.
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.TP 15
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[EACCES]
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Search permission is denied for any component of the path name.
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.TP 15
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[ELOOP]
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Too many symbolic links were encountered in translating the pathname.
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(Minix-vmd)
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.TP 15
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[EFAULT]
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.I Path
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points outside the process's allocated address space.
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.TP 15
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[EIO]
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An I/O error occurred while reading from or writing to the file system.
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.SH "SEE ALSO"
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.BR chdir (2).
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