licence: SchOS is GPL-2.0-or-later, no longer Apache-2.0
Nexoniarz is the sole author and SchOS was never published under Apache-2.0, so this is a straight relicence. LICENSE is the FSF GPLv2 text, every first-party SPDX header moves to GPL-2.0-or-later, and NOTICE, README.md, docs/licensing.md and the site say so. projects/schfs-linux follows the rest of the tree. The GPL gives copyleft: a fork has to ship its source. It also lifts the old "Linux drivers, never" rule, since GPL-2.0-only code combines with GPL-2.0-or-later. "Or later" leaves room for GPLv3, but one binary still has to pick one version, so docs/licensing.md now keeps Apache-2.0 and GPLv3 code out of the kernel to keep Linux code possible there. BSD 4-clause code goes from "avoid" to "no", because the advertising clause is GPL-incompatible. LDLS still ships no .ko. That boundary is now project policy rather than a legal requirement, and ldls.md, devices.md and licensing.md section 6 say so. refmod declares license=GPL, and ldls-check passes (27 checks). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz
parent
3b26575b4a
commit
26bca020b6
135 changed files with 959 additions and 689 deletions
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@ -44,7 +44,7 @@
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|||
- [Device model](schunix-device-model.md) — one bus-agnostic list at /proc/devices; bus is provenance, class is capability, and the settled Linux-driver decision.
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||||
- [usb.ids](schunix-usb-ids.md) — shipped as /usr/share/usb.ids, BSD option of a dual licence; cached, not fetched per build.
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||||
- [USB and xHCI](schunix-usb-xhci.md) — enumeration and control transfers work; written from the spec, because porting BSD's stack means porting newbus first.
|
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- [Licensing](schunix-licensing.md) — Apache-2.0, copyright Nexoniarz; BSD drivers are usable and Linux ones are not.
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- [Licensing](schunix-licensing.md) — GPL-2.0-or-later since 2026-10-22 (was Apache); Linux code OK, no Apache/GPLv3 in the kernel.
|
||||
- [Layout migration](schunix-layout-migration.md) — the bt/ → ports/ + lib/ + cmd/ restructure and the two Makefile traps it exposed.
|
||||
- [Verify by driving the shell](schunix-verify-by-driving-shell.md) — booting to a prompt proves nothing; run real commands over serial with paced input.
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- [/dev and /proc](schunix-devfs-procfs.md) — how both are built; ps and top work now, one cosmetic gap left.
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@ -1,6 +1,6 @@
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|||
---
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||||
name: schunix-licensing
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||||
description: "Schunix is Apache-2.0, copyright Nexoniarz; BSD drivers yes, Linux no, and ports/ licences bind regardless"
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||||
description: "SchOS is GPL-2.0-or-later since 2026-10-22 (was Apache-2.0); Linux code now allowed, but no Apache/GPLv3 code in the kernel"
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metadata:
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node_type: memory
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||||
type: project
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||||
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@ -8,43 +8,34 @@ metadata:
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|||
modified: 2026-08-08T16:18:39.569Z
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||||
---
|
||||
|
||||
**`LICENSE` is Apache-2.0**, copyright *Nexoniarz* (not "Schunix Contributors" —
|
||||
one author, and a fictional collective makes future re-licensing harder).
|
||||
Chosen over MIT/BSD for the express patent grant.
|
||||
**`LICENSE` is GPL-2.0-or-later** since 2026-10-22, copyright *Nexoniarz*, sole
|
||||
author. It was Apache-2.0 before and was never published under it. Nexoniarz
|
||||
chose GPL for copyleft ("I can't be also too liberal because people just mostly
|
||||
steal that work") and so Linux code can be used. They picked "or-later" over
|
||||
"only" on my recommendation.
|
||||
|
||||
**Settled, do not reopen:** the "Apache-2.0 but shared-source" question was
|
||||
discussed at length in 2026-08 and **on 2026-08-08 Nexoniarz asked for it to be
|
||||
dropped from the docs entirely** — `docs/licensing.md` is about licensing, not
|
||||
about that debate. All references are gone from `docs/`, `LICENSE` and `NOTICE`;
|
||||
don't reintroduce them. The substance that survives, in one line inside §1:
|
||||
Apache-2.0 §2 is an irrevocable grant, so a restriction stated anywhere else
|
||||
does not narrow it, and restricting distribution would be a licence change
|
||||
(bespoke proprietary, or BUSL-1.1) rather than a wording change.
|
||||
**The rule that replaced "Linux no":** a single linked binary has to pick one
|
||||
GPL version. Linux code (GPL-2.0-only) makes it GPLv2; Apache-2.0 or GPLv3 code
|
||||
makes it GPLv3. They can't share a binary, so **the kernel takes no Apache-2.0
|
||||
or GPLv3 code**. Separate userland programs may be GPLv3 or Apache. Data files
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||||
such as Roboto (Apache-2.0) are aggregation, and that holds inside the ramdisk
|
||||
too. BSD 4-clause code is now a hard **no** (GPL-incompatible).
|
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|
||||
The decision that actually mattered to them is **when to publish**, not the
|
||||
licence; the standing rule is still never ([[nexoniarz-sharing-preference]]).
|
||||
**LDLS still ships no `.ko`.** That is policy now, not a legal requirement. The
|
||||
`.gitignore` `*.ko` rule and `RAMDISK_EXCLUDE` stay.
|
||||
|
||||
**Binding regardless of what they pick:**
|
||||
- The kernel derives from xv6 (MIT). `LICENSE.MIT` was *missing* — it was
|
||||
referenced as `bk/LICENSE.MIT` and lost in the `bk/` → `kernel/` migration.
|
||||
Recreated; must not be deleted.
|
||||
- `ports/` is other people's code, redistributed in every image: musl (MIT),
|
||||
toybox (0BSD), mksh (MirOS). `NOTICE` carries the attribution musl and mksh
|
||||
require. Patches under `ports/*/patches/` inherit *their* licences.
|
||||
**Settled, do not reopen:** the old "Apache-2.0 but shared-source" debate was
|
||||
dropped from the docs on 2026-08-08. The question that matters to them is when
|
||||
to publish, and the standing answer is still never
|
||||
([[nexoniarz-sharing-preference]]).
|
||||
|
||||
New first-party files carry `// SPDX-License-Identifier: Apache-2.0`.
|
||||
**Binding regardless:**
|
||||
- The kernel derives from xv6 (MIT). `LICENSE.MIT` must not be deleted.
|
||||
- `ports/` is other people's code: musl, toybox, mksh, zsh, ncurses, lwIP,
|
||||
kilo and fastfetch are all permissive. `NOTICE` carries the attributions.
|
||||
|
||||
**Drivers: BSD yes, Linux no** (asked 2026-08-04, "for drivers we can try get
|
||||
it from like Linux?"). Linux is GPL-2.0-**only**, and Apache-2.0's patent and
|
||||
indemnity clauses are "further restrictions" under GPLv2 §6 — the two cannot
|
||||
be combined and redistributed. Using a Linux driver means relicensing all of
|
||||
Schunix to GPLv2 and dropping Apache-2.0; you cannot keep both. FreeBSD /
|
||||
NetBSD / OpenBSD are BSD-2/3-clause and **are** compatible: keep the notice,
|
||||
add to `NOTICE`, done. Reading Linux to understand hardware is fine;
|
||||
translating a driver function-by-function produces a derivative work whatever
|
||||
the identifiers say. Best source of all is the public specification — xHCI,
|
||||
virtio, AHCI, NVMe, e1000 — which carries no licence on what you write from
|
||||
it. Recorded in `docs/plan/roadmap.md` §1. See [[schunix-roadmap-and-projects]].
|
||||
New first-party files carry `// SPDX-License-Identifier: GPL-2.0-or-later`.
|
||||
The policy is in `docs/licensing.md`. See [[schunix-roadmap-and-projects]].
|
||||
|
||||
|
||||
## fs.c is third-party, and was unattributed until 2026-08-09
|
||||
|
|
|
|||
5
.gitignore
vendored
5
.gitignore
vendored
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|
@ -45,7 +45,8 @@ docs/Website/releases/
|
|||
# Kernel modules, ever. docs/plan/ldls.md rule 1: LDLS ships the layer and
|
||||
# never the thing it loads, and that applies to this tree as well as to an
|
||||
# image. The loader's test input is built from ldls/test/refmod.c, which is
|
||||
# ours; a .ko here would be someone else's GPL code in an Apache-2.0 repo.
|
||||
# ours; a .ko here would be someone else's code, with its own provenance, in
|
||||
# a tree that is otherwise all first-party or attributed in NOTICE.
|
||||
*.ko
|
||||
*.ko.xz
|
||||
|
||||
|
|
@ -59,7 +60,7 @@ core.*
|
|||
#
|
||||
# help/ is where a third-party kernel gets cloned when it is worth reading --
|
||||
# Zircon, at the time of writing. It is BSD-licensed and this project is
|
||||
# Apache-2.0, so the licences are compatible and that is *not* the reason it is
|
||||
# GPL-2.0-or-later, so the licences are compatible and that is *not* the reason it is
|
||||
# ignored: it is ignored because a copy of another project's source inside this
|
||||
# one is a copy that will rot, that nobody will update, and that makes the
|
||||
# provenance of every file around it a question. Clone it, read it, learn the
|
||||
|
|
|
|||
460
LICENSE
460
LICENSE
|
|
@ -1,187 +1,339 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
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1. Definitions.
|
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Preamble
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"License" shall mean the terms and conditions for use, reproduction,
|
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and distribution as defined by Sections 1 through 9 of this document.
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The licenses for most software are designed to take away your
|
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License is intended to guarantee your freedom to share and change free
|
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|
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"Licensor" shall mean the copyright owner or entity authorized by
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|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any conditions of TITLE,
|
||||
NONINFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
You are solely responsible for determining the appropriateness of
|
||||
using or reproducing the Work and assume any risks associated with
|
||||
Your exercise of permissions under this License.
|
||||
3. You may copy and distribute the Program (or a work based on it,
|
||||
under Section 2) in object code or executable form under the terms of
|
||||
Sections 1 and 2 above provided that you also do one of the following:
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or exemplary damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (even if such Contributor has been advised of the possibility
|
||||
of such damages).
|
||||
a) Accompany it with the complete corresponding machine-readable
|
||||
source code, which must be distributed under the terms of Sections
|
||||
1 and 2 above on a medium customarily used for software interchange; or,
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may offer such
|
||||
obligations only on Your behalf and on Your sole responsibility,
|
||||
not on behalf of any other Contributor, and only if You agree to
|
||||
indemnify, defend, and hold each Contributor harmless for any
|
||||
liability incurred by, or claims asserted against, such Contributor
|
||||
by reason of your accepting any warranty or additional liability.
|
||||
b) Accompany it with a written offer, valid for at least three
|
||||
years, to give any third party, for a charge no more than your
|
||||
cost of physically performing source distribution, a complete
|
||||
machine-readable copy of the corresponding source code, to be
|
||||
distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
||||
to distribute corresponding source code. (This alternative is
|
||||
allowed only for noncommercial distribution and only if you
|
||||
received the program in object code or executable form with such
|
||||
an offer, in accord with Subsection b above.)
|
||||
|
||||
The source code for a work means the preferred form of the work for
|
||||
making modifications to it. For an executable work, complete source
|
||||
code means all the source code for all modules it contains, plus any
|
||||
associated interface definition files, plus the scripts used to
|
||||
control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
||||
form) with the major components (compiler, kernel, and so on) of the
|
||||
operating system on which the executable runs, unless that component
|
||||
itself accompanies the executable.
|
||||
|
||||
If distribution of executable or object code is made by offering
|
||||
access to copy from a designated place, then offering equivalent
|
||||
access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
|
||||
compelled to copy the source along with the object code.
|
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program
|
||||
except as expressly provided under this License. Any attempt
|
||||
otherwise to copy, modify, sublicense or distribute the Program is
|
||||
void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
|
||||
|
||||
5. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Program (or any work based on the
|
||||
Program), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
|
||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
Copyright 2026 Nexoniarz
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
NOTE: The kernel (kernel/) is derived from xv6 (MIT License, Copyright
|
||||
2006-2019 Frans Kaashoek, Robert Morris, Russ Cox, M.I.T. CSAIL).
|
||||
The MIT license notice is preserved in LICENSE.MIT and must not be
|
||||
removed. Third-party software redistributed in a built image -- musl,
|
||||
toybox and mksh, all under ports/ -- keeps its own license; see NOTICE.
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
Which outside code may be copied into SchOS and which may not -- the
|
||||
BSD/GPL rules, the NetBSD advertising clause, and what is deliberately
|
||||
never shipped -- is written up in docs/licensing.md. Read it before
|
||||
copying anyone else's code in.
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License.
|
||||
|
|
|
|||
4
Makefile
4
Makefile
|
|
@ -455,8 +455,8 @@ RAMDISK_BLOCKS ?= 8000
|
|||
# rule before it is a size one: the ramdisk image is linked *into the kernel
|
||||
# binary*, so anything staged in sysroot/ when it is built becomes part of a
|
||||
# distributable artifact. Anything that arrives in sysroot/ under a licence that
|
||||
# cannot be combined with Apache-2.0, or that simply is not ours to redistribute,
|
||||
# belongs on this list rather than in someone's memory.
|
||||
# cannot be combined with GPL-2.0-or-later, or that simply is not ours to
|
||||
# redistribute, belongs on this list rather than in someone's memory.
|
||||
#
|
||||
# This is not hypothetical: a 33 MB test payload once landed here and overflowed
|
||||
# the 6 MB image, and mkfs's "increase FSSIZE" message then pointed at a constant
|
||||
|
|
|
|||
23
NOTICE
23
NOTICE
|
|
@ -2,7 +2,8 @@ SchOS
|
|||
Copyright 2026 Nexoniarz
|
||||
|
||||
This product includes software developed as part of the SchOS project,
|
||||
licensed under the Apache License, Version 2.0. See LICENSE.
|
||||
licensed under the GNU General Public License, version 2 or (at your option)
|
||||
any later version. See LICENSE.
|
||||
|
||||
================================================================================
|
||||
Third-party software
|
||||
|
|
@ -118,9 +119,9 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|||
Fetched by ports/lwip and compiled into the kernel -- it is the TCP/IP stack,
|
||||
not a userland library, so it is present in every built kernel image rather
|
||||
than in a binary under /bin. The port layer written for SchOS
|
||||
(kernel/net/lwip/) is Apache-2.0 and is not part of lwIP; lwIP's own sources
|
||||
are unmodified. Clause 3 is a no-endorsement term, not the four-clause
|
||||
advertising requirement, so it combines with Apache-2.0 without difficulty.
|
||||
(kernel/net/lwip/) is GPL-2.0-or-later and is not part of lwIP; lwIP's own
|
||||
sources are unmodified. Clause 3 is a no-endorsement term, not the four-clause
|
||||
advertising requirement, so it combines with the GPL without difficulty.
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
Intel 8254x device identifiers BSD 3-Clause
|
||||
|
|
@ -149,9 +150,8 @@ http://www.linux-usb.org/usb.ids
|
|||
|
||||
Distributed by its maintainer under the terms of *either* the GNU General
|
||||
Public License version 2 or later, *or* the 3-clause BSD Licence. SchOS takes
|
||||
the BSD option; the GPL option is not exercised and could not be, since
|
||||
Apache-2.0 and GPL-2.0-only cannot be combined (see docs/licensing.md section
|
||||
2).
|
||||
the BSD option, which was chosen while SchOS was Apache-2.0; either option is
|
||||
compatible now, and the BSD one is kept because it asks less of anyone.
|
||||
|
||||
Shipped verbatim as /usr/share/usb.ids. Cached in dist/ and refreshed with
|
||||
`make usb-ids`, never automatically -- the version and date are in the file's
|
||||
|
|
@ -163,9 +163,10 @@ Roboto Apache-2.0
|
|||
Copyright the Roboto Project Authors (https://github.com/googlefonts/roboto)
|
||||
|
||||
Shipped as /usr/share/fonts/Roboto-Regular.ttf, from ports/Roboto. Licensed
|
||||
under Apache-2.0 -- the same licence as SchOS itself, so it carries no
|
||||
obligation beyond this notice. Intended for the desktop, window manager and
|
||||
compositor.
|
||||
under Apache-2.0. It is a separate data file loaded at run time, not code
|
||||
linked into SchOS, so it sits beside the GPL as an aggregate and keeps its own
|
||||
licence; the obligation is this notice. Intended for the desktop, window
|
||||
manager and compositor.
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
JetBrains Mono SIL OFL 1.1
|
||||
|
|
@ -178,7 +179,7 @@ Shipped as /usr/share/fonts/JetBrainsMono-Regular.ttf, from ports/JetBrains_Mono
|
|||
and TTY.
|
||||
|
||||
Under the SIL Open Font License 1.1 the font remains under OFL even inside this
|
||||
Apache-2.0 system -- that does not reach any other part of SchOS -- and it may
|
||||
GPL-licensed system -- that does not reach any other part of SchOS -- and it may
|
||||
not be sold on its own. Bundling it with an operating system is expressly
|
||||
permitted. JetBrains Mono declares no Reserved Font Name, so a modified version
|
||||
(a pre-rasterised bitmap, for instance) may keep the name.
|
||||
|
|
|
|||
15
README.md
15
README.md
|
|
@ -150,20 +150,17 @@ Another: **syscalls are declared in exactly one place**,
|
|||
|
||||
## Licensing
|
||||
|
||||
**Apache-2.0**, copyright Nexoniarz. See [LICENSE](LICENSE).
|
||||
**GPL-2.0-or-later**, copyright Nexoniarz. See [LICENSE](LICENSE).
|
||||
|
||||
The kernel derives from xv6, which is MIT — see [LICENSE.MIT](LICENSE.MIT).
|
||||
Third-party code redistributed in a built image (musl, toybox, mksh, zsh, kilo,
|
||||
the fonts) keeps its own licence; [NOTICE](NOTICE) carries the attributions.
|
||||
All of it is permissive — there is no GPL in an image this builds, which is why
|
||||
the userland is toybox and not BusyBox and the editor is kilo and not nano. See
|
||||
[docs/licensing.md](docs/licensing.md).
|
||||
See [docs/licensing.md](docs/licensing.md).
|
||||
|
||||
Drivers may be adapted from BSD sources, which are compatible. Linux drivers are
|
||||
not: GPL-2.0-only and Apache-2.0 cannot be combined and redistributed. Reading
|
||||
Linux to understand hardware is fine; translating a driver is not. Best of all
|
||||
is the public specification — xHCI, virtio, AHCI, e1000 — which carries no
|
||||
licence on what you write from it.
|
||||
Drivers may be adapted from BSD sources and, since the move to the GPL, from
|
||||
Linux — GPL-2.0-only code combines with GPL-2.0-or-later, and the result ships
|
||||
under GPLv2. Best of all is still the public specification — xHCI, virtio,
|
||||
AHCI, e1000 — which carries no licence on what you write from it.
|
||||
|
||||
---
|
||||
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
<!-- SPDX-License-Identifier: Apache-2.0 -->
|
||||
<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
|
||||
# Booting SchOS
|
||||
|
||||
One firmware path:
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* SPDX-License-Identifier: Apache-2.0 */
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
/*
|
||||
* The loader's user interface. See ui.h for why this can be shared at all.
|
||||
*
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* SPDX-License-Identifier: Apache-2.0 */
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
/*
|
||||
* The loader's user interface, shared by both firmwares.
|
||||
*
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
<!-- SPDX-License-Identifier: Apache-2.0 -->
|
||||
<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
|
||||
# UEFI loader
|
||||
|
||||
The loader. This directory once existed only so the BIOS path could be moved
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
#pragma once
|
||||
#ifndef SCHOS_EFI_H
|
||||
#define SCHOS_EFI_H
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchOS UEFI loader.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// chvt N -- show virtual terminal N.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// httpd -- serve a directory over HTTP.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// ldlsd -- LDLS, on SchOS.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// loadkeys -- choose the keyboard layout.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// memfdtest -- two processes map the same memfd, one writes, the other sees it.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// netecho -- a network, in a process.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// pcitest -- prove that a driver could live out here.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// ping -- ICMP echo, over a SchOS ping socket.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// resolvconf -- put the nameserver where the resolver will look.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// schdbg -- ask the kernel a question.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// schdbgd -- the debugger, over the network.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// schinit -- PID 1.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// schinitd -- the supervisor. PID 2, and restartable.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// schmode -- change the display mode.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// sigtest -- the SIGCHLD/sigsuspend contract every shell is built on.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// vgpud -- the virtio-gpu driver, outside the kernel.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
<!-- SPDX-License-Identifier: Apache-2.0 -->
|
||||
<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
|
||||
# The website
|
||||
|
||||
Three pages, two scripts, one stylesheet of its own, and the design system
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* SPDX-License-Identifier: Apache-2.0 */
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
/* ==========================================================================
|
||||
The SchOS site — layout only
|
||||
--------------------------------------------------------------------------
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* SPDX-License-Identifier: Apache-2.0
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later
|
||||
*
|
||||
* Three behaviours, no framework:
|
||||
* 1. the hero console types a real boot log
|
||||
|
|
|
|||
|
|
@ -77,7 +77,7 @@
|
|||
<div class="nv-divider"></div>
|
||||
<div class="site-footer__row">
|
||||
<span class="nv-body">SchOS — kernel <b>SchIFT</b>, filesystem <b>SchFS</b>.</span>
|
||||
<span class="nv-code nv-text-tertiary">Apache-2.0, with the xv6-derived core under MIT.</span>
|
||||
<span class="nv-code nv-text-tertiary">GPL-2.0-or-later, with the xv6-derived core under MIT.</span>
|
||||
</div>
|
||||
|
||||
<p class="nv-body nv-text-secondary pride-note" id="pride-note">
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* SPDX-License-Identifier: Apache-2.0
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later
|
||||
*
|
||||
* The documentation reader.
|
||||
*
|
||||
|
|
|
|||
|
|
@ -283,7 +283,7 @@
|
|||
<div class="nv-divider"></div>
|
||||
<div class="site-footer__row">
|
||||
<span class="nv-body">SchOS — kernel <b>SchIFT</b>, filesystem <b>SchFS</b>.</span>
|
||||
<span class="nv-code nv-text-tertiary">Apache-2.0, with the xv6-derived core under MIT.</span>
|
||||
<span class="nv-code nv-text-tertiary">GPL-2.0-or-later, with the xv6-derived core under MIT.</span>
|
||||
</div>
|
||||
|
||||
<p class="nv-body nv-text-secondary pride-note" id="pride-note">
|
||||
|
|
|
|||
|
|
@ -92,7 +92,7 @@
|
|||
<a class="nv-button nv-button--lg" href="#what">What it has</a>
|
||||
</div>
|
||||
|
||||
<p class="nv-caption">Apache-2.0 · runs from RAM · writes nothing to your disks</p>
|
||||
<p class="nv-caption">GPL-2.0-or-later · runs from RAM · writes nothing to your disks</p>
|
||||
</div>
|
||||
|
||||
<div class="nv-card nv-card--flush console" aria-label="Boot log">
|
||||
|
|
@ -642,7 +642,7 @@
|
|||
<div class="nv-divider"></div>
|
||||
<div class="site-footer__row">
|
||||
<span class="nv-body">SchOS — kernel <b>SchIFT</b>, filesystem <b>SchFS</b>.</span>
|
||||
<span class="nv-code nv-text-tertiary">Apache-2.0, with the xv6-derived core under MIT.</span>
|
||||
<span class="nv-code nv-text-tertiary">GPL-2.0-or-later, with the xv6-derived core under MIT.</span>
|
||||
</div>
|
||||
|
||||
<p class="nv-body nv-text-secondary pride-note" id="pride-note">
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
<!-- SPDX-License-Identifier: Apache-2.0 -->
|
||||
<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
|
||||
# Audio
|
||||
|
||||
A program that wants to make a sound opens `/dev/dsp`, writes PCM to it, and
|
||||
|
|
|
|||
|
|
@ -247,10 +247,11 @@ manager or equivalent, and SchOS will load it.
|
|||
The licensing reasoning matters and is worth stating exactly, because it is
|
||||
easy to get wrong in both directions:
|
||||
|
||||
- **Distribution is what triggers the GPL.** Shipping a GPL-2.0-only driver in
|
||||
an Apache-2.0 image is what cannot be done — see [../licensing.md](../licensing.md)
|
||||
§2. A user obtaining a driver themselves and loading it on their own machine
|
||||
is their act, not ours, and is not a distribution by us.
|
||||
- **Distribution is what triggers the GPL.** SchOS is GPL-2.0-or-later, so
|
||||
shipping a GPL-2.0-only driver in an image is now *possible* — see
|
||||
[../licensing.md](../licensing.md) §6 — but LDLS still does not, by policy. A
|
||||
user obtaining a driver themselves and loading it on their own machine is
|
||||
their act, not ours, and is not a distribution by us.
|
||||
- **Implementing a loader is not copying.** Writing support for a module format
|
||||
and a driver ABI from published documentation produces our own work. It is a
|
||||
clean-room implementation, and it stays one only if it is written from
|
||||
|
|
@ -259,8 +260,8 @@ easy to get wrong in both directions:
|
|||
identifiers say.
|
||||
|
||||
So the rule for this subsystem is the same as everywhere else in the tree: the
|
||||
loader is ours and Apache-2.0, what it loads is the user's business, and nothing
|
||||
GPL ever enters an image we build. `RAMDISK_EXCLUDE` and `NOTPORTS` are the
|
||||
loader is ours and GPL-2.0-or-later, what it loads is the user's business, and
|
||||
no third-party module enters an image we build. `RAMDISK_EXCLUDE` and `NOTPORTS` are the
|
||||
existing mechanisms for keeping that true mechanically rather than by intention.
|
||||
|
||||
---
|
||||
|
|
|
|||
|
|
@ -54,9 +54,10 @@ ships the layer and never the thing it loads. `.gitignore` refuses `*.ko`,
|
|||
is deliberately not part of `all`, and `make ldls-unstage` takes it out again.
|
||||
|
||||
[../licensing.md](../licensing.md) §6 is the whole argument. The short form is
|
||||
that GPL obligations attach to *distribution*, we distribute Apache-2.0 code
|
||||
containing no GPL, and the combination happens in a user process on the user's
|
||||
machine — so no combined work is distributed by anyone.
|
||||
that the combination happens in a user process on the user's machine, so no
|
||||
combined work is distributed by anyone. Since SchOS moved to GPL-2.0-or-later
|
||||
that is no longer the only way it *could* be done — it is the way it is done,
|
||||
because a module we never ship is a module we never have to answer for.
|
||||
|
||||
### 2. It runs in a process, never in the kernel
|
||||
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
<!-- SPDX-License-Identifier: Apache-2.0 -->
|
||||
<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
|
||||
# Virtual terminals
|
||||
|
||||
Six of them, `/dev/tty1` through `/dev/tty6`.
|
||||
|
|
|
|||
|
|
@ -55,7 +55,7 @@ the kernel's name (**SchIFT**) as a shape.
|
|||
coverage mask carries none, so the loader draws it in metal and the kernel in
|
||||
the theme accent, from the same bytes.
|
||||
- **With or without a wordmark.** Set "SchOS" beside it in **Roboto Bold**,
|
||||
which is already in the tree (`ports/Roboto`), already Apache-2.0, and already
|
||||
which is already in the tree (`ports/Roboto`), Apache-2.0, and already
|
||||
in `NOTICE`.
|
||||
- Non-human and non-animal, permanently. If a character is ever drawn it gets
|
||||
its own mark; a logo that starts growing a face has taken that job.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
<!-- SPDX-License-Identifier: Apache-2.0 -->
|
||||
<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
|
||||
# Building SchOS
|
||||
|
||||
Supported hosts: **Linux, macOS, FreeBSD/OpenBSD/NetBSD, and Windows** (under
|
||||
|
|
|
|||
|
|
@ -130,8 +130,8 @@ file protocol, so a 6 MB ramroot kernel is visibly slower to start than the
|
|||
**What may go in it is a licensing question, not only a size one.** The image is
|
||||
linked into the kernel binary, so anything in `sysroot/` when it is built becomes
|
||||
part of a distributable artifact. A file staged there under a licence that
|
||||
cannot be combined with Apache-2.0 does not merely ride along — it makes the
|
||||
kernel itself undistributable. `RAMDISK_EXCLUDE` in the Makefile is the list of
|
||||
is not ours to redistribute does not merely ride along — it makes the kernel
|
||||
itself undistributable. `RAMDISK_EXCLUDE` in the Makefile is the list of
|
||||
paths kept out, and enforcing it in the build rather than relying on someone
|
||||
remembering to unstage something first is deliberate. It has been needed once
|
||||
already: a 33 MB test payload landed in `sysroot/` and both overflowed the image
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
<!-- SPDX-License-Identifier: Apache-2.0 -->
|
||||
<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
|
||||
# Moving the project to a Linux machine
|
||||
|
||||
**This move happened.** The tree lives on Fedora now, and the checkout is at
|
||||
|
|
|
|||
|
|
@ -7,24 +7,31 @@ pointed here long before this file existed.
|
|||
|
||||
---
|
||||
|
||||
## 1. SchOS is Apache-2.0
|
||||
## 1. SchOS is GPL-2.0-or-later
|
||||
|
||||
Copyright Nexoniarz. See `LICENSE`.
|
||||
Copyright Nexoniarz. See `LICENSE`. Until 2026-10 SchOS was Apache-2.0; it was
|
||||
never published under that licence, and as the sole author Nexoniarz relicensed
|
||||
it outright.
|
||||
|
||||
Apache-2.0 was chosen over MIT/BSD for one reason that actually matters at OS
|
||||
scale: it contains an **express patent grant** and a patent-retaliation clause.
|
||||
MIT and BSD are silent on patents, which means a contributor can hand you code
|
||||
and later assert a patent over it. For a kernel that is intended to accept
|
||||
outside contributions, that silence is the expensive kind.
|
||||
**Why the GPL.** Two reasons, one about others and one about us:
|
||||
|
||||
What that grant means in practice: Apache-2.0 §2 gives everyone a perpetual,
|
||||
worldwide, irrevocable licence to reproduce, modify, sublicense and distribute
|
||||
SchOS. Any additional restriction stated elsewhere — in a README, a website,
|
||||
or a policy — does not narrow it. The licence text is what holds up.
|
||||
- **Copyleft.** Anyone may use, study, modify and redistribute SchOS — but
|
||||
whoever ships it, or something built from it, must ship the source of that
|
||||
too, under the same terms. Under Apache-2.0 a fork could be closed and sold
|
||||
with no changes given back. The GPL does not forbid commercial use; it forbids
|
||||
taking the work private.
|
||||
- **Linux.** Linux is GPL-2.0-only, and Apache-2.0 could not be combined with
|
||||
it. Under the GPL, Linux drivers and code can be adopted (§2).
|
||||
|
||||
If restricted distribution is ever genuinely wanted, that is a licence change
|
||||
(a bespoke proprietary licence, or something like BUSL-1.1 with a conversion
|
||||
date), not a wording change, and it means giving up the Apache grant.
|
||||
**Why "or later".** It keeps one door open that "only" would close: GPLv3 and
|
||||
Apache-2.0 code can still be combined with SchOS code, with that combination
|
||||
shipping under GPLv3. See §2 for why the kernel should not walk through it.
|
||||
|
||||
**What was given up.** Apache-2.0 had an express patent grant; GPLv2 has only
|
||||
an implied one. That mattered most for outside contributions, and there are
|
||||
none yet.
|
||||
|
||||
New first-party files carry `SPDX-License-Identifier: GPL-2.0-or-later`.
|
||||
|
||||
---
|
||||
|
||||
|
|
@ -36,37 +43,32 @@ date), not a wording change, and it means giving up the Apache grant.
|
|||
| MIT, ISC | **Yes** | Keep the notice |
|
||||
| BSD 2-clause | **Yes** | Keep the notice |
|
||||
| BSD 3-clause | **Yes** | Keep the notice; no endorsement claims |
|
||||
| BSD **4-clause** (advertising) | **Avoid** — see §3 | Notice *and* an acknowledgement in advertising materials |
|
||||
| Apache-2.0 | **Yes** | Keep NOTICE contents |
|
||||
| MPL-2.0 | Case by case | File-level copyleft; keep those files separate |
|
||||
| **GPL-2.0-only** | **No** | — |
|
||||
| **GPL-3.0 / LGPL-3.0** | **No** for linked code | — |
|
||||
| BSD **4-clause** (advertising) | **No** — see §3 | GPL-incompatible |
|
||||
| GPL-2.0-only, GPL-2.0-or-later, LGPL-2.1 | **Yes** | Source for the combined work; keep the notices |
|
||||
| MPL-2.0 | Case by case | Compatible through its secondary-licence clause, unless marked otherwise |
|
||||
| Apache-2.0, GPL-3.0, LGPL-3.0 | **Not in the kernel**; separate programs and files fine | See below |
|
||||
|
||||
**Every "yes" above requires an entry in `NOTICE`.** That file is the project's
|
||||
attribution record and the thing that makes the permissive licences actually
|
||||
satisfied rather than merely tolerated.
|
||||
attribution record and the thing that makes the licences actually satisfied
|
||||
rather than merely tolerated.
|
||||
|
||||
### Why GPL-2.0-only is a hard no
|
||||
### One binary, one GPL version
|
||||
|
||||
Apache-2.0 imposes conditions GPLv2 treats as "further restrictions" under its
|
||||
§6 — principally the patent-retaliation term. The FSF and the ASF agree on
|
||||
this: **Apache-2.0 code and GPL-2.0-only code cannot be combined into one
|
||||
distributable work.** It is not a matter of taste or of how carefully the files
|
||||
are kept apart in the tree; it is that the combined binary cannot satisfy both
|
||||
licences at once.
|
||||
"Or later" means SchOS code can go out under GPLv2 *or* GPLv3. A single linked
|
||||
binary still has to pick one:
|
||||
|
||||
GPL-3.0 fixed this in the other direction (Apache-2.0 is compatible *into*
|
||||
GPLv3), but that does not help: the result would have to ship under GPLv3, and
|
||||
SchOS does not.
|
||||
- Add **Linux code** (GPL-2.0-only) and that binary is GPLv2.
|
||||
- Add **Apache-2.0 or GPLv3 code** and that binary is GPLv3, because
|
||||
Apache-2.0's patent terms are "further restrictions" under GPLv2 §6.
|
||||
|
||||
**Practical consequence:** BSD drivers can be adopted. Linux drivers cannot,
|
||||
ever, no matter how convenient. This is why the USB stack was written from the
|
||||
specification rather than ported.
|
||||
Those two cannot meet in one binary. Linux is the main reason for the GPL, so
|
||||
**the kernel stays GPLv2-compatible**: no Apache-2.0 or GPLv3 code is linked
|
||||
into it. Userland programs are separate works, so one may be GPLv3 or
|
||||
Apache-2.0 on its own without affecting anything else.
|
||||
|
||||
**"Cannot be adopted" is not the same as "cannot be run."** A driver the *user*
|
||||
obtains and loads on their own machine is their act, not a distribution by us —
|
||||
see §4 and [architecture/ldls.md](architecture/ldls.md), which is the layer built on exactly
|
||||
that distinction and which ships no Linux code of any kind.
|
||||
Data files such as fonts are not linked code. Roboto (Apache-2.0) sits beside
|
||||
the system as an aggregate, and that holds inside the ramdisk too: the image is
|
||||
a filesystem carried by the kernel binary, not code linked with it.
|
||||
|
||||
---
|
||||
|
||||
|
|
@ -80,7 +82,7 @@ uniformly licensed**, and the difference matters per file:
|
|||
|---|---|
|
||||
| 2-clause BSD — modern NetBSD Foundation files | **Fine** |
|
||||
| 3-clause, "Regents of the University of California" | **Fine.** Berkeley formally rescinded the advertising clause in 1999 |
|
||||
| 4-clause with the advertising clause, **non-UC** copyright holder | **Avoid.** Berkeley's rescission covers Berkeley's copyright, not other people's |
|
||||
| 4-clause with the advertising clause, **non-UC** copyright holder | **No.** Berkeley's rescission covers Berkeley's copyright, not other people's, and the clause is GPL-incompatible |
|
||||
|
||||
The last row is real, not hypothetical. Measured on this checkout:
|
||||
|
||||
|
|
@ -91,10 +93,9 @@ lib/libc 101 of 1575
|
|||
sys/net 5 of 180 ← the TCP/IP stack is nearly clean
|
||||
```
|
||||
|
||||
4-clause is still permissive and still redistributable; the burden is an
|
||||
advertising obligation that accumulates quietly and is tedious to honour
|
||||
properly. Prefer a 2-clause or UC-Regents file. If a 4-clause file is genuinely
|
||||
the right answer, it goes into `NOTICE` with the full clause quoted.
|
||||
4-clause is still permissive on its own, but the advertising clause is a
|
||||
further restriction the GPL does not allow, so **a 4-clause file cannot be
|
||||
combined with SchOS at all**. Use a 2-clause or UC-Regents file, or write it.
|
||||
|
||||
Check before copying, not after:
|
||||
|
||||
|
|
@ -128,7 +129,7 @@ the top of the file; the UC block is a separate licence further down. Berkeley
|
|||
never spoke for WIDE, so the rescission does not reach it. The two most
|
||||
valuable files in the stack are the two encumbered ones.
|
||||
|
||||
That is not fatal — 4-clause is still permissive — but it is exactly the case
|
||||
Under the GPL that rules them out, and it is exactly the case
|
||||
where a **second BSD tree earns its disk space**: FreeBSD's TCP has been
|
||||
through a relicensing effort NetBSD's has not, so the same file there may well
|
||||
be 2-clause. Check it the same way before assuming either:
|
||||
|
|
@ -180,13 +181,13 @@ Chosen 2026-08-09, both licences checked at source rather than assumed:
|
|||
| Roboto | desktop, window manager, compositor | **Apache-2.0** |
|
||||
| JetBrains Mono | terminal, TTY | **SIL OFL 1.1** |
|
||||
|
||||
Roboto is the same licence as SchOS, so it is the easy case: a NOTICE entry
|
||||
and nothing else.
|
||||
Roboto is Apache-2.0, which is fine for a font: it is a data file beside the
|
||||
system, not code linked into it (§2). A NOTICE entry and nothing else.
|
||||
|
||||
OFL is permissive and bundling is precisely what it is for, with two conditions
|
||||
worth knowing before anyone subsets or converts a font:
|
||||
|
||||
- **The font stays under OFL** even inside an Apache-2.0 system. It does not
|
||||
- **The font stays under OFL** even inside a GPL-licensed system. It does not
|
||||
infect anything else; it just cannot be relicensed.
|
||||
- **It may not be sold on its own.** Shipping it as part of an OS is fine.
|
||||
- **Reserved Font Names.** JetBrains Mono declares *none* -- its copyright line
|
||||
|
|
@ -212,42 +213,17 @@ with SchOS. Keeping the distinction sharp is what stops it eroding:
|
|||
rebuild never needs the network; not part of any image, and not all of it is
|
||||
redistributable.
|
||||
|
||||
### The userland this rules out, and what was done instead
|
||||
### The userland, and why it is permissive anyway
|
||||
|
||||
The rule costs something real and it is worth naming the bill rather than only
|
||||
the principle.
|
||||
While SchOS was Apache-2.0, **BusyBox** (GPL-2.0-only) and **nano** (GPL-3.0)
|
||||
were ruled out, and the userland was built from toybox (0BSD), mksh and kilo
|
||||
(BSD-2-Clause) instead. Both would be possible now — nano as a separate program
|
||||
— but nothing needs replacing: toybox gives 268 applets, kilo is installed as
|
||||
`/bin/edit`, and `cmd/httpd` is first-party.
|
||||
|
||||
**BusyBox** is the obvious userland for a system this size — about four hundred
|
||||
applets, including a shell, an editor, `less` and an `httpd`. It is
|
||||
**GPL-2.0-only**, so §2 applies, and here the consequence is sharper than
|
||||
"cannot be linked": `make ramroot` links the root filesystem image *into the
|
||||
kernel binary*, so a BusyBox in `sysroot/` would put GPLv2 code inside an
|
||||
Apache-2.0 executable. Excluding it from the ramdisk avoids that and leaves the
|
||||
ramroot build with no userland at all, which is not a trade worth making.
|
||||
|
||||
**nano** is the same answer for the same reason, one version later: GPL-3.0,
|
||||
which is incompatible with Apache-2.0 in the other direction.
|
||||
|
||||
What was done instead, when the complaint "the userland is too thin" came up:
|
||||
|
||||
| wanted | answer |
|
||||
|---|---|
|
||||
| `awk`, `bc`, `diff`, `more`, `expr`, `tr`, … | already in toybox, in `toys/pending/`, switched off by `defconfig`. Turning 26 of them on took the shipped set from 236 applets to 268, at no licensing cost — it is the same 0BSD tarball. |
|
||||
| an editor that is not `vi` | [kilo](https://github.com/antirez/kilo), BSD-2-Clause, one file, no dependencies. Installed as `/bin/edit` as well as `/bin/kilo`. |
|
||||
| `wget` that works | not a userland problem at all. See below. |
|
||||
| something to host with | `cmd/httpd`, written here, Apache-2.0. |
|
||||
|
||||
The `wget` one is worth recording because it was diagnosed wrongly at first,
|
||||
and switching userland would not have fixed it: **SchOS had no DNS reachable
|
||||
from a process**, so every program taking a hostname failed and each looked
|
||||
like its own bug. BusyBox's `wget` would have failed identically. musl already
|
||||
contains a complete resolver; the only missing fact was which nameserver, which
|
||||
the kernel had all along from DHCP and never published. See
|
||||
[architecture/networking.md](architecture/networking.md).
|
||||
|
||||
The general shape: **a permissive answer existed for every one of these**, and
|
||||
three of the four were already in the tree. That will not always be true, and
|
||||
when it is not the answer is still no.
|
||||
The `wget` failure that started that discussion was not a userland problem:
|
||||
SchOS had no DNS reachable from a process, which BusyBox would have hit
|
||||
identically. See [architecture/networking.md](architecture/networking.md).
|
||||
|
||||
The mechanisms that keep this from eroding, since good intentions have already
|
||||
failed once here:
|
||||
|
|
@ -286,22 +262,26 @@ copied file is a file to be understood, attributed and maintained forever.
|
|||
|
||||
## 6. LDLS, and the distribution boundary
|
||||
|
||||
[architecture/ldls.md](architecture/ldls.md) runs Linux drivers. That sounds like it should
|
||||
contradict §2, and it does not, because the two questions below are different
|
||||
ones and only the first is about us.
|
||||
[architecture/ldls.md](architecture/ldls.md) runs Linux drivers. This section
|
||||
was written when SchOS was Apache-2.0 and the boundary below was a legal
|
||||
necessity. Under GPL-2.0-or-later it is a **project policy** instead: shipping
|
||||
a GPL-2.0-only `.ko` with SchOS would now be lawful, provided the source goes
|
||||
with it. It is still not done, because a module we never ship is a module we
|
||||
never have to vouch for, track upstream, or provide source for.
|
||||
|
||||
### LDLS is Apache-2.0
|
||||
### LDLS is ours
|
||||
|
||||
Every file under `ldls/` is ours. The loader was written from the ELF-64 gABI
|
||||
and the x86-64 psABI; the shim is written under the rule in
|
||||
[architecture/ldls.md](architecture/ldls.md). **No Linux code is in it and none ever will
|
||||
be**, which is the same standard the xHCI and USB stacks already meet (§5).
|
||||
Every file under `ldls/` is ours, GPL-2.0-or-later. The loader was written from
|
||||
the ELF-64 gABI and the x86-64 psABI; the shim is written under the rule in
|
||||
[architecture/ldls.md](architecture/ldls.md). Copying Linux code into it would
|
||||
no longer be a licence problem, but the shim's value is that it is small and
|
||||
understood, so the existing rule stands.
|
||||
|
||||
### The combination is not ours to make
|
||||
### The combination is the user's
|
||||
|
||||
| | licence | who distributes it |
|
||||
|---|---|---|
|
||||
| `ldls/` — loader, shim, host | **Apache-2.0** | us |
|
||||
| `ldls/` — loader, shim, host | **GPL-2.0-or-later** | us |
|
||||
| a `.ko` | GPL-2.0-only, usually | the user's distribution |
|
||||
| the two running together in a process | — | **nobody** |
|
||||
|
||||
|
|
@ -311,20 +291,10 @@ GPLv2 §0 is explicit about where its obligations attach:
|
|||
> by this License; they are outside its scope. **The act of running the Program
|
||||
> is not restricted.**
|
||||
|
||||
So: we ship Apache-2.0 code containing no GPL. The user obtains a GPL module
|
||||
from wherever they get their software. The user runs them together on their own
|
||||
machine. No combined work is distributed by anyone, and no GPL obligation is
|
||||
triggered — not on us, and not on them.
|
||||
|
||||
This is the position FreeBSD has shipped from for about a decade: a
|
||||
BSD-licensed `linuxkpi` in base, GPL `drm-kmod` installed by the user from
|
||||
ports.
|
||||
|
||||
**The consequence for the user, stated plainly:** they cannot redistribute the
|
||||
combination either. An image with a `.ko` baked into it is a single work that
|
||||
would have to satisfy Apache-2.0 and GPL-2.0-only at once, which §2 explains is
|
||||
impossible. That is why `RAMDISK_EXCLUDE` exists, and why `.gitignore` refuses
|
||||
`*.ko` outright — the boundary is kept mechanically rather than by intention.
|
||||
So: we ship LDLS and no modules. The user obtains a module from wherever they
|
||||
get their software and runs it on their own machine. `RAMDISK_EXCLUDE` and the
|
||||
`*.ko` rule in `.gitignore` keep that boundary mechanical rather than
|
||||
intentional.
|
||||
|
||||
### `EXPORT_SYMBOL_GPL` does not apply
|
||||
|
||||
|
|
@ -335,7 +305,7 @@ that.
|
|||
|
||||
**LDLS has no Linux symbols to gate.** `EXPORT_SYMBOL_GPL` is Linux marking
|
||||
*Linux's own* symbols, and the check it drives protects those. Every symbol
|
||||
LDLS provides is ours — reimplemented from facts, under Apache-2.0. There is no
|
||||
LDLS provides is ours — reimplemented from facts, under GPL-2.0-or-later. There is no
|
||||
gate being bypassed, because there is no Linux symbol being exposed.
|
||||
|
||||
So LDLS implements no licence check. It **reads** the module's declared licence
|
||||
|
|
|
|||
|
|
@ -135,10 +135,9 @@ in `NOTICE` **before** the file is committed, not after.
|
|||
| libxkbcommon | MIT |
|
||||
| xkeyboard-config | MIT |
|
||||
|
||||
All Apache-2.0 compatible, all needing only a `NOTICE` entry. **Nothing here
|
||||
carries the GPL problem that governs drivers**, which is a pleasant change and
|
||||
worth noticing: the Wayland ecosystem is permissively licensed almost throughout,
|
||||
and that is a genuine argument for it beyond any technical one.
|
||||
All GPL-2.0-or-later compatible, all needing only a `NOTICE` entry. The
|
||||
Wayland ecosystem is permissively licensed almost throughout, so nothing here
|
||||
raises a licensing question at all.
|
||||
|
||||
---
|
||||
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Counters for the filesystem and block paths, read through /proc/fsstat.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// /dev/pci -- device access from userspace.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// SchOS — POSIX-compatibility types used by kernel syscall handlers.
|
||||
#pragma once
|
||||
#include "types.h"
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
#pragma once
|
||||
#ifndef SCHBOOT_H
|
||||
#define SCHBOOT_H
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// The protocol between PID 1 and the supervisor.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Virtual terminals.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Hardware watchpoints. docs/architecture/debugging.md milestone D4.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// The kernel log that outlives the kernel. See include/klog.h.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Naming an address.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// PSOGM — the SchOS crash screen.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// The bounded string builder. See include/sbuf.h for what it is and why it
|
||||
// moved out of kernel/dev/procfs.c.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// /dev/dbg -- asking the kernel a question. See include/dbg.h.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// /dev/netdev -- a network interface whose backend is a process.
|
||||
// See include/netuser.h.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// /dev/pci -- PCI devices, reachable from userspace.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Virtual terminals. See include/vt.h for why this exists at all; the short
|
||||
// version is that switching needs a backing store, and the console drew
|
||||
|
|
|
|||
|
|
@ -10,9 +10,9 @@
|
|||
// the controller is not complicated; BSD is much more valuable as the
|
||||
// reference you check yourself against than as the code you paste.
|
||||
//
|
||||
// (Licensing points the same way. The BSD stacks are BSD-2/3-clause, which is
|
||||
// compatible with Apache-2.0 -- Linux's drivers are GPL-2.0-only, which is
|
||||
// not. See docs/guides/adding-a-driver.md.)
|
||||
// (Licensing no longer decides it: the BSD stacks are BSD-2/3-clause and
|
||||
// Linux's drivers are GPL-2.0-only, and both combine with GPL-2.0-or-later.
|
||||
// The argument above is the whole reason. See docs/licensing.md.)
|
||||
//
|
||||
// Enumeration polls the event ring instead of using interrupts. That is not
|
||||
// laziness: pci_bind_all() runs from kmain() with interrupts disabled and no
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// devtmpfs: /dev, generated rather than stored.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Attributes, and the index over them.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS copy-on-write B-tree — see btree.h for the contract.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS in the kernel: block device, mount, and the transaction bracket.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS object layer, read side: inodes, directories and file data.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS object layer, write side: create, link, unlink, rename, write,
|
||||
// truncate.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS internals: the volume (uberblock ring, block allocation) and the object
|
||||
// layer (inodes, directories, file data) that sit on top of the B-tree.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS space manager: which blocks are in use.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS behind the VFS: the fs_ops table that makes SchFS files reachable
|
||||
// through open(2), read(2), write(2) and the rest.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// SchFS volume layer: the uberblock ring.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// AF_INET sockets, on top of lwIP's raw API.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// lwIP's compiler/platform header for SchOS.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// lwIP configuration for SchOS.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// lwIP network interfaces over the netdev class.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <ctype.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <errno.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <inttypes.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <limits.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <stddef.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <stdint.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <stdio.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// <stdlib.h> for lwIP, shadowing the host's. See shim/string.h for why these
|
||||
// files exist at all.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// <string.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// <unistd.h> for lwIP, shadowing the host's.
|
||||
//
|
||||
// Empty on purpose. Everything lwIP would take from this header is supplied by
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// The lwIP port layer: everything lwIP needs from the system it runs on.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// The network thread, and the one place the TCP/IP stack is started.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// rtnetlink, enough of it that getifaddrs(3) works.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
// Linux x86_64 syscall number -> SchOS syscall number translation.
|
||||
// Enabled per process by sys_enable_linux_abi (see kernel/sys/sys_compat.c).
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Reading BTF. See ldls/btf.h.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Reading BTF: struct layouts and function prototypes, from the kernel that
|
||||
// the driver was built for.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// ldls-inspect -- what is in a relocatable object, and what it wants.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// ldls-run -- load a module and call its init, on the build machine.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// ldls-types -- ask a kernel's BTF where its fields are.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Loading a relocatable object. See ldls/ko.h.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
#pragma once
|
||||
|
||||
// Loading a relocatable object. docs/architecture/ldls.md, "The loader".
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// Register access. See ldls/kpi/kpi.h for the provenance rule.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// The KPI, and the table the loader resolves against. See ldls/kpi/kpi.h.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
// SPDX-License-Identifier: Apache-2.0
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
//
|
||||
// The KPI: the Linux symbols a hosted driver actually calls, implemented.
|
||||
//
|
||||
|
|
|
|||
Some files were not shown because too many files have changed in this diff Show more
Loading…
Reference in a new issue