| License Info |
| ========================= |
| The Akaros repository contains a mix of code from different projects across a |
| few top-level directories. The kernel is in `kern/`, userspace libraries are |
| in `user/`, and a variety of tools can be found in `tools/`, including the |
| toolchain. |
| |
| The Akaros kernel is licensed under the GNU General Public License, version 2. |
| Our kernel is made up of code from a number of other systems. Anything written |
| for the Akaros kernel is licensed "GPLv2 or later". However, other code, such |
| as from Linux and Plan 9, are licensed GPLv2, without the "or later" clause. |
| There is also code from BSD, Xen, JOS, and Plan 9 derivatives. As a whole, the |
| kernel is licensed GPLv2. |
| |
| Note that the Plan 9 code that is a part of Akaros is also licensed under the |
| Lucent Public License. The University of California, Berkeley, has been |
| authorised by Alcatel-Lucent to release all Plan 9 software previously governed |
| by the Lucent Public License, Version 1.02 under the GNU General Public |
| License, Version 2. Akaros derives its Plan 9 code from this UCB release. For |
| more information, see LICENSE-PLAN9. |
| |
| Our user code is likewise from a mix of sources. All code written for Akaros, |
| such as `user/parlib/`, is licensed under the GNU LGPLv2.1 or later. Plan 9 |
| libraries, including `user/iplib` and `user/ndblib` are licensed under the |
| LGPLv2.1, but without the "or later". See each library for details. |
| |
| Likewise, `tools/` is a collection of various code. All of our contributions |
| to existing code bases, such as GCC, glibc, and busybox, are licensed under |
| their respective projects' licenses. |
| |
| |
| The old JOS code came with the following: |
| ----------------------------------------- |
| |
| Most of the source files in this directory are derived from the Exokernel, |
| which is: |
| |
| /* |
| * Copyright (C) 1997 Massachusetts Institute of Technology |
| * |
| * This software is being provided by the copyright holders under the |
| * following license. By obtaining, using and/or copying this software, |
| * you agree that you have read, understood, and will comply with the |
| * following terms and conditions: |
| * |
| * Permission to use, copy, modify, distribute, and sell this software |
| * and its documentation for any purpose and without fee or royalty is |
| * hereby granted, provided that the full text of this NOTICE appears on |
| * ALL copies of the software and documentation or portions thereof, |
| * including modifications, that you make. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO |
| * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE, |
| * BUT NOT LIMITATION, COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR |
| * WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR |
| * THAT THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY |
| * THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS. COPYRIGHT |
| * HOLDERS WILL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE OR |
| * DOCUMENTATION. |
| * |
| * The name and trademarks of copyright holders may NOT be used in |
| * advertising or publicity pertaining to the software without specific, |
| * written prior permission. Title to copyright in this software and any |
| * associated documentation will at all times remain with copyright |
| * holders. See the file AUTHORS which should have accompanied this software |
| * for a list of all copyright holders. |
| * |
| * This file may be derived from previously copyrighted software. This |
| * copyright applies only to those changes made by the copyright |
| * holders listed in the AUTHORS file. The rest of this file is covered by |
| * the copyright notices, if any, listed below. |
| */ |
| |
| Console.c was created consulting the NetBSD pccons driver which is: |
| |
| /*- |
| * Copyright (c) 1993, 1994, 1995 Charles Hannum. All rights reserved. |
| * Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * William Jolitz and Don Ahn. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| Kclock.h, sched.h, and printf.h are copyright: |
| |
| /* |
| * Copyright (C) 1998 Exotec, Inc. |
| * |
| * This software is being provided by the copyright holders under the |
| * following license. By obtaining, using and/or copying this software, |
| * you agree that you have read, understood, and will comply with the |
| * following terms and conditions: |
| * |
| * Permission to use, copy, modify, distribute, and sell this software |
| * and its documentation for any purpose and without fee or royalty is |
| * hereby granted, provided that the full text of this NOTICE appears on |
| * ALL copies of the software and documentation or portions thereof, |
| * including modifications, that you make. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO |
| * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE, |
| * BUT NOT LIMITATION, COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR |
| * WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR |
| * THAT THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY |
| * THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS. COPYRIGHT |
| * HOLDERS WILL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE OR |
| * DOCUMENTATION. |
| * |
| * The name and trademarks of copyright holders may NOT be used in |
| * advertising or publicity pertaining to the software without specific, |
| * written prior permission. Title to copyright in this software and any |
| * associated documentation will at all times remain with Exotec, Inc.. |
| * |
| * This file may be derived from previously copyrighted software. This |
| * copyright applies only to those changes made by Exotec, Inc. The rest |
| * of this file is covered by the copyright notices, if any, listed below. |
| */ |
| |
| Printf.c is copyright: |
| |
| /*- |
| * Copyright (c) 1986, 1988, 1991, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * (c) UNIX System Laboratories, Inc. |
| * All or some portions of this file are derived from material licensed |
| * to the University of California by American Telephone and Telegraph |
| * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
| * the permission of UNIX System Laboratories, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94 |
| */ |
| |
