NAME
chroot - change root directory

SYNOPSIS
chroot(dirname)
const char *dirname;

DESCRIPTION
Dirname is the address of the pathname of a directory, terminated
by a null byte. Chroot causes this directory to become the root
directory, the starting point for path names beginning with "/".

In order for a directory to become the root directory a process
must have execute (search) access to the directory.

This call is restricted to the super-user.

RETURN VALUE
Upon successful completion, a value of 0 is returned. Otherwise, a
value of -1 is returned and errno is set to indicate an error.

ERRORS
Chroot will fail and the root directory will be unchanged if one or
more of the following are true:

[ENOTDIR] A component of the path name is not a directory.

[EINVAL] The pathname contains a character with the high-
order bit set.

[ENAMETOOLONG] A component of a pathname exceeded 255 characters,
or an entire path name exceeded 1023 characters.

[ENOENT] The named directory does not exist.

[EACCES] Search permission is denied for any component of the
path name.

[ELOOP] Too many symbolic links were encountered in
translating the pathname.

[EFAULT] Path points outside the process’s allocated address
space.

[EIO] An I/O error occurred while reading from or writing
to the file system.

SEE ALSO
chdir(2)