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Annotation of 43BSDReno/lib/libc/sys/chroot.2, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1983 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)chroot.2    6.4 (Berkeley) 1/25/89
                      6: .\"
                      7: .TH CHROOT 2 "January 25, 1989"
                      8: .UC 5
                      9: .SH NAME
                     10: chroot \- change root directory
                     11: .SH SYNOPSIS
                     12: .nf
                     13: .ft B
                     14: chroot(dirname)
                     15: char *dirname;
                     16: .ft R
                     17: .fi
                     18: .SH DESCRIPTION
                     19: .I Dirname
                     20: is the address of the pathname of a directory, terminated by a null byte.
                     21: .I Chroot
                     22: causes this directory
                     23: to become the root directory,
                     24: the starting point for path names beginning with ``/''.
                     25: .PP
                     26: In order for a directory to become the root directory
                     27: a process must have execute (search) access to the directory.
                     28: .PP
                     29: It should be noted that
                     30: .I chroot
                     31: has no effect on the process's current directory.
                     32: .PP
                     33: This call is restricted to the super-user.
                     34: .SH "RETURN VALUE
                     35: Upon successful completion, a value of 0 is returned.  Otherwise,
                     36: a value of \-1 is returned and \fIerrno\fP is set to indicate an error.
                     37: .SH ERRORS
                     38: .I Chroot
                     39: will fail and the root directory will be unchanged if
                     40: one or more of the following are true:
                     41: .TP 15
                     42: [ENOTDIR]
                     43: A component of the path name is not a directory.
                     44: .TP 15
                     45: [EINVAL]
                     46: The pathname contains a character with the high-order bit set.
                     47: .TP 15
                     48: [ENAMETOOLONG]
                     49: A component of a pathname exceeded 255 characters,
                     50: or an entire path name exceeded 1023 characters.
                     51: .TP 15
                     52: [ENOENT]
                     53: The named directory does not exist.
                     54: .TP 15
                     55: [EACCES]
                     56: Search permission is denied for any component of the path name.
                     57: .TP 15
                     58: [ELOOP]
                     59: Too many symbolic links were encountered in translating the pathname.
                     60: .TP 15
                     61: [EFAULT]
                     62: .I Path
                     63: points outside the process's allocated address space.
                     64: .TP 15
                     65: [EIO]
                     66: An I/O error occurred while reading from or writing to the file system.
                     67: .SH "SEE ALSO"
                     68: chdir(2)

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