.Sh DESCRIPTION
.Fa Dirname
is the address of the pathname of a directory, terminated by an ASCII NUL.
-.Fn Chroot
+.Fn chroot
causes
.Fa dirname
to become the root directory,
.Va errno
is set to indicate an error.
.Sh ERRORS
-.Fn Chroot
+.Fn chroot
will fail and the root directory will be unchanged if:
.Bl -tag -width Er
.It Bq Er ENOTDIR