Spectrum Development

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devel@spectrum-os.org

388 discussions

[PATCH nixpkgs] spectrumPackages.rootfs: add /sys
by Alyssa Ross 25 Aug '20

25 Aug '20

Programs assume this and it's useful to have. --- pkgs/os-specific/linux/spectrum/rootfs/generic.nix | 2 +- pkgs/os-specific/linux/spectrum/rootfs/stage1.nix | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/pkgs/os-specific/linux/spectrum/rootfs/generic.nix b/pkgs/os-specific/linux/spectrum/rootfs/generic.nix index 778b18dafa0..0a99f99bd5b 100644 --- a/pkgs/os-specific/linux/spectrum/rootfs/generic.nix +++ b/pkgs/os-specific/linux/spectrum/rootfs/generic.nix @@ -31,7 +31,7 @@ let mkdir $out cd $out - mkdir bin sbin dev proc run tmp + mkdir bin sbin dev proc run sys tmp ln -s ${dash}/bin/dash bin/sh ln -s ${makeStage1 { inherit run; }} sbin/init cp -r ${./etc} etc diff --git a/pkgs/os-specific/linux/spectrum/rootfs/stage1.nix b/pkgs/os-specific/linux/spectrum/rootfs/stage1.nix index 75cfed56e7f..be7853316e9 100644 --- a/pkgs/os-specific/linux/spectrum/rootfs/stage1.nix +++ b/pkgs/os-specific/linux/spectrum/rootfs/stage1.nix @@ -27,6 +27,7 @@ writeScript "init-stage1" '' if { s6-mount -t devpts -o gid=4,mode=620 none /dev/pts } if { s6-mount -t tmpfs none /dev/shm } if { s6-mount -t proc none /proc } + if { s6-mount -t sysfs none /sys } if { s6-ln -s ${mesa.drivers} /run/opengl-driver } export HOME / -- 2.27.0

1 0

Improving kernel build time
by Philipp Steinpaß 25 Aug '20

25 Aug '20

Hi! I read that development ist struggeling with long kernel build times right now and as a former gentoo kid, I feel somewhat qualified to help with that. I had a look at the current way, nixos is building the kernel and I think it's somewhat over engineered for spectrums needs right now, so I propose to do the following: * Exctract the current generic kernel .config from nixos * make menuconfig with that on a generic linux kernel of the version currently used in spectrum and remove as many modules as I can * Circumvent the current nixos kernel configuration pretty much entirely and supply the kernel .config by adding it directly to the git repository for faster iteration When a more elaborate kernel configuration scheme is needed again in the future, the nixos one is still there and can be properly ported to spectrums needs but right now I feel like it would only slow the process down. However I don't have much experience with the code, so when I get told here that it's probably better to keep closer to nixpkgs, I'll give my best with that, too. Philipp

1 0

[PATCH] Add and clarify matrix workarounds.
by Philipp 21 Aug '20

21 Aug '20

I'm a matrix user and fiddled around with the room there a bit. My findings were that the room itself seems to be fine, but the pretty alias is broken in some way that I don't understand. I came up with two ways to join the room via the internal ID and I also took the liberty to modify the old workaround a little and made it more precise. --- participating.html | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/participating.html b/participating.html index 811fcf4..58f2ff3 100644 --- a/participating.html +++ b/participating.html @@ -78,13 +78,15 @@ the web. <h3>Note for Matrix users</h3> <p> -There appears to be an issue with Matrix's IRC bridge that prevents -Matrix users from joining #spectrum. The workaround is as follows: +There appears to be an issue with Matrix's IRC bridged room that prevents +Matrix users from joining the channel with the normal alias <q>#freenode_#spectrum:matrix.org</q>. There are the following workarounds: + +<ul> + <li>Join the room via it's internal name: <q>/join !ZsIiqZmCTSWHpTQWaw:matrix.org</q>. + <li>Join the room via <a href="https://matrix.to/#/!ZsIiqZmCTSWHpTQWaw:matrix.org">matrix.to link</a>.</li> + <li>Ask the bridges appservice to invite you to the room: <q>/msg @appservice-irc:matrix.org !join #spectrum</q> and accept the invite.</li> +</ul> -<ol> - <li>Post <q>!join #spectrum</q> in your "Freenode IRC Bridge" chat.</li> - <li>Accept the invitation you are sent.</li> -</ol> <p> If you experience this issue, kindly report it to the people who run -- 2.28.0

3 5

[PATCH www] CONTRIBUTING: ask people to add copyright headers
by Alyssa Ross 12 Aug '20

12 Aug '20

I want to make sure we're collecting copyright information right from the start, because it's much easier to keep track of this as content is created, rather than try to piece it together after the fact should we ever need to. --- CONTRIBUTING | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/CONTRIBUTING b/CONTRIBUTING index b2941cf..6cbc106 100644 --- a/CONTRIBUTING +++ b/CONTRIBUTING @@ -17,6 +17,14 @@ self-close?), and CSS to a minimum. We want to optimise for the website being as nice as possible to navigate in a text editor, to encourage people to edit and improve the website. +For any changes that are likely to be copyrightable (i.e. those that +involve any amount of creative input from you), please add an +SPDX-FileCopyrightText header to the file so we can keep track of +copyright holders. Every file should already have at least one +example of these that you can use as a template. If you'd rather not +list your email address in the copyright notice, it's fine to omit +that. + Please send patches to devel(a)spectrum-os.org. Instructions for how to do this are provided in the contributing.html file. -- 2.27.0

2 2

[PATCH www] Become REUSE 3.0 compliant
by Alyssa Ross 11 Aug '20

11 Aug '20

See <https://reuse.software/>. NLnet are quite keen on this. --- CONTRIBUTING | 3 + LICENSES/CC-BY-SA-4.0.txt | 350 ++++++++++++++++++ LICENSES/CC0-1.0.txt | 119 +++++++ LICENSES/GFDL-1.3-or-later.txt | 416 ++++++++++++++++++++++ LICENSES/GPL-3.0-or-later.txt | 625 +++++++++++++++++++++++++++++++++ README | 7 +- bibliography.html | 3 + contributing.html | 3 + design.html | 3 + doc/index.html | 3 + index.html | 3 + motivation.html | 3 + participating.html | 3 + style.css | 3 + todo.html | 3 + 15 files changed, 1543 insertions(+), 4 deletions(-) create mode 100644 LICENSES/CC-BY-SA-4.0.txt create mode 100644 LICENSES/CC0-1.0.txt create mode 100644 LICENSES/GFDL-1.3-or-later.txt create mode 100644 LICENSES/GPL-3.0-or-later.txt diff --git a/CONTRIBUTING b/CONTRIBUTING index 7ec8fba..b2941cf 100644 --- a/CONTRIBUTING +++ b/CONTRIBUTING @@ -1,3 +1,6 @@ +SPDX-FileCopyrightText: 2019 Alyssa Ross <hi(a)alyssa.is> +SPDX-License-Identifier: CC0-1.0 + ---------------------------------------------------------------------- This file provides instructions for contributing to the website hosted at <https://spectrum-os.org/>. 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For +more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>. + +The GNU 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. But first, please read <https://www.gnu.org/ +licenses /why-not-lgpl.html>. diff --git a/README b/README index 156141b..359ada0 100644 --- a/README +++ b/README @@ -1,3 +1,6 @@ +SPDX-FileCopyrightText: 2019 Alyssa Ross <hi(a)alyssa.is> +SPDX-License-Identifier: CC0-1.0 + These files contain the static portion of the website accessible at <https://spectrum-os.org/>. CGit, Mailman, etc, are run seperately. @@ -10,7 +13,3 @@ Documentation License (version 1.2 or later), at your option. 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2 2

This (Last) Week in Spectrum, 2020-W32
by Alyssa Ross 11 Aug '20

11 Aug '20

Last week, I'd just finished getting the cloud-hypervisor vhost-user-net frontend code to build as part of crosvm, and the next step was testing it. crosvm ------ I wrote some hacky code that replaced the virtio-net device creation in crosvm with an instance of the ported vhost-user-net code. When I booted crosvm, there were some of the expected simple oversights of mine that needed to be addressed, but once those were taken care of, it still didn't quite work. The VM boots, sees a network interface, and even communicates with the vhost-user-net backend! But, it doesn't quite work. The vhost-user-net code never realises/gets told that it has traffic, and so it's never processed. Unsure of what to do about this, I decided to turn to cloud-hypervisor and look at how the code ran there. cloud-hypervisor ---------------- I wanted to try running the cloud-hypervisor v-u-n backend I was using for testing (because it's much simpler than DPDK -- it just sends traffic to a TAP device) with QEMU as the frontend, because QEMU is a VMM I'm familiar with (much more so than cloud-hypervisor as the frontend), and I thought it would be useful to have a working frontend/backend combination to compare to. I had some problems, though, because apparently nobody had ever wanted to use QEMU with the cloud-hypervisor vhost-user-net backend before -- or if they had, they hadn't wanted to enough to make it work. The cloud-hypervisor backend didn't implement the vhost-user spec correctly in a few subtle ways that made it incompatible with QEMU. I won't explain every subtle issue, but I ended up writing a few patches[1][2] for cloud-hypervisor and the "vhost" crate it depends on (that is in the process of being moved under the rust-vmm umbrella). One interesting issue I will go into a little detail of was that the wording in the spec was a little unclear, and QEMU interpreted it one way, and cloud-hypervisor the other. I ended up sending an email[3] to the author of the spec asking for clarification. He answered my question, and we discussed how the wording could be improved. He liked my second attempt at improving my working, and asked me to send a patch, but preferably not right now, because QEMU is currently gearing up for a release, scheduled for next week if everything goes well. Since I wrote these cloud-hypervisor patches, and had to test them, I ended up having to learn how to use cloud-hypervisor anyway to make sure I hadn't broken it in fixing the backend up to work with QEMU. Oh well. Once this was done, I could use both QEMU and cloud-hypervisor with the backend, but not crosvm. But it was a little more complex than that. When I ported the v-u-n code to crosvm, I ported the first version of it that was added to the cloud-hypervisor tree, rather than the latest version. The theory here was that the earlier version would be closer to crosvm, because cloud-hypervisor would have had less time to diverge. Then, once I had that working, I could add on the later changes gradually. What I didn't account for here is that the initial version of the v-u-n frontend in cloud-hypervisor didn't really work properly, and needed some time to bake before it did. So having now had this experience I think it might be better to try to port the latest version, and accept that porting might be a bit harder, but the end result is more likely to work. [1]: https://github.com/cloud-hypervisor/vhost/pull/22 [2]: https://github.com/cloud-hypervisor/cloud-hypervisor/pull/1565 [3]: https://lore.kernel.org/qemu-devel/87sgd1ktx9.fsf@alyssa.is/ libgit2 ------- While bisecting cloud-hypervisor to see if I could figure out when the v-u-n frontend started working properly, I encountered a large section of commits that I couldn't build any more, because Cargo couldn't resolve a git dependency. The dependency was locked to a commit that was no longer in the branch it had been in when the cloud-hypervisor commit was from. Despite knowing the exact commit it needed, Cargo fetched the branch the commit used to be on. This is because it is generally not possible to fetch arbitrary commits with git. Some servers, like GitHub, do however allow this, and I wondered why Cargo wouldn't at least fall back to trying that. As it turns out, it actually couldn't do that, though! Cargo uses libgit2, and libgit2 doesn't support fetching arbitrary commits. So I wrote a quick patch to libgit2 to support this[4]. It's only a partial implementation, though, because I don't find libgit2 to be a particularly easy codebase to work in (although it's better than git!). So I'm hoping somebody who knows more about it than me will help me figure out how to finish it. [4]: https://github.com/libgit2/libgit2/pull/5603 Next week, I'm hoping that I'll be able to get to vhost-user-net in crosvm working. I think this will probably mean porting the code again, using the latest version. Which is a bit of a shame, but at least I have an idea of what to do next. I am, overall, feeling pretty optimistic, though. I'm pretty confident that we can get some sort of decent but imperfect network hardware isolation even though virtio-vhost-user might not be ready yet, which was something I was worried about before. I don't want to really go into detail in that now though because this is already a long email and it's already a day late because I was tired yesterday, but essentially, we could forward the network device to a VM that would run the driver, and forward traffic back to the host over virtio-net. The host could handle this either in kernelspace or userspace with DPDK, but the important thing is that the only network driver it would need to support would be virtio-net. No talking to hundreds of different Wi-Fi cards and hoping that none of the drivers have a vulnerability. So, not perfect compared to proper guest<->guest networking, but a step in the right direction, and one that should be as simple as possible to upgrade to virtio-vhost-user once that becomes possible.

1 0

This Week in Spectrum, 2020-W31
by Alyssa Ross 02 Aug '20

02 Aug '20

DPDK ---- Last week, I'd just figured out how to do a normal vhost-user setup with a QEMU VM connected to DPDK. This week, I wanted to try to move DPDK into another VM using the experimental virtio-vhost-user driver, taking the host system out of the networking equation altogether. In theory this should have been a very simple change, but I couldn't get it to work. DPDK claimed to be forwarding packets to the ethernet device I'd attached to the backend VM (the one running DPDK), but networking in the frontend VM (what you might think of as the application VM) didn't work at all. It tried and failed to do DHCP, and so couldn't progress beyond that. A breakthrough came when I thought to look at the logs of my local DHCP server. I saw that it was actually receiving requests from the VM, and assigning it an IP address. Once I realised this, I hypothesised that outgoing traffic was working, but not incoming. Finally having something to look for, I had a look through the DPDK virtio-vhost-user driver[1], and my suspicion was confirmed in an unexpected way. It looks like incoming traffic (from the perspective of the virtio-vhost-user frontend) is not actually implemented at all! But with outbound traffic working, this means that I'm confident enough I understand virtio-vhost-user enough to be able to leave this here for now. From Spectrum's side, I can now be pretty sure that everything should be workable, so we can just wait a bit for virtio-vhost-user to get a bit further along and then revisit it. And since the frontend has no idea it's talking to virtio-vhost-user instead of normal vhost-user, we can use normal (host-based) vhost-user for now, and drop virtio-vhost-user in down the line. A couple of outstanding questions I still don't know the answer to about DPDK are: - How will routing work if I have multiple frontend VMs with multiple virtio-vhost-user connections all wanting to use the same network device? Will I want to use something like Open vSwitch[2] for that? - DPDK by default uses a busyloop to check for data to process, for efficiency. This is obviously not appropriate for a workstation-focused operating system. There is an interrupt-based mode, though, but I don't know how to use it yet. Since I consider the concept proven, though, I'm going to punt on these for now. The longer I leave these questions, the more likely it is that a kernel driver for virtio-vhost-user will emerge and we can use that instead. That's not to say I want to leave inter-guest networking hanging forever, but I have other inter-guest networking bits I can switch focus to for now, and once those are down I can revisit the virtio-vhost-user backend situation. [1]: https://github.com/ndragazis/dpdk-next-virtio/blob/2d60e63/drivers/virtio_v… [2]: https://www.openvswitch.org/ crosvm ------ I started integrating the vhost-user-net code from Cloud Hypervisor into crosvm. I'm at the point where I can get all the copied Cloud Hypervisor code to compile in crosvm, which is pretty good! I have not yet written the code to actually start one of these devices yet, though, so I haven't been able to test it yet. It's been interesting to look at Cloud Hypervisor because it's a codebase that is heavily based on crosvm (even more so than Firecracker is), but that has also evolved and diverged from it. It's especially interesting to see stuff where parallel evolution occurred between the crosvm and Cloud Hypervisor codebases, or when Cloud Hypervisor changed how some crosvm code worked, and then later changed it back again. The codebases were still similar enough that I could have the cloud-hypervisor device integrated into the crosvm codebase in a day, although there's lots of code duplication that will have to be dealt with -- I copied over a bunch of supporting code rather than trying to integrate it into the crosvm equivalents to get the code running for the first time in an environment as similar as possible to the one it was designed for. I expect that when I test the device in crosvm it'll probably work fairly quickly if not first try. The more complicated part will be a bit of a change to how crosvm does guest memory that isn't strictly necessary but is important for security. crosvm allocates all guest memory in a single memfd. This means that, to share guest memory with another process, like when using vhost-user, the only option is to share all of guest memory. This would sort of defeat the purpose of hardware isolation in Spectrum! But from what I could tell -- I'm not 100% on this -- the guest memory abstraction in cloud-hypervisor is more advanced, and I think it might support multiple memfds backing guest memory for this sort of thing. I'll have to adapt crosvm to that model to be able to use vhost-user securely. website ------- The new "Bibliography" page is up[3]! Lots of links to relevant resources about concepts important to Spectrum. :) [3]: https://spectrum-os.org/bibliography.html It's a bit of a relief to have returned from the uncertain world of DPDK to the familiar territory of crosvm. I'm confident that the next bit of work here (vhost-user in crosvm) won't be that much of a big deal. Hopefully, we'll have at interim networking to a reasonable degree fairly soon. After that, I plan to look at file sharing, possibly with vhost-user-fs (virtio-fs over vhost-user), which I noticed cloud-hypervisor implements today. That should be pretty similar to the networking stuff, although I don't think any virtio-fs virtio-vhost-user code exists at the moment.

1 0

[PATCH doc] Become REUSE 3.0 compliant
by Alyssa Ross 31 Jul '20

31 Jul '20

See <https://reuse.software/>. NLnet are quite keen on this. Cc: Cole Helbling <cole.e.helbling(a)outlook.com> --- Cole, are you happy with how you're listed as a copyright holder in developer-manual.adoc here? The year and email address are both technically optional, so if you'd rather not have your email address listed that would be okay. .gitignore | 5 +- LICENSES/CC-BY-SA-4.0 | 428 ------------------------------- LICENSES/CC-BY-SA-4.0.txt | 350 +++++++++++++++++++++++++ LICENSES/CC0-1.0.txt | 119 +++++++++ LICENSES/GFDL-1.3 | 451 --------------------------------- LICENSES/GFDL-1.3-or-later.txt | 416 ++++++++++++++++++++++++++++++ LICENSES/MIT | 17 -- LICENSES/MIT.txt | 19 ++ Makefile | 1 + default.nix | 1 + developer-manual.adoc | 10 +- 11 files changed, 919 insertions(+), 898 deletions(-) delete mode 100644 LICENSES/CC-BY-SA-4.0 create mode 100644 LICENSES/CC-BY-SA-4.0.txt create mode 100644 LICENSES/CC0-1.0.txt delete mode 100644 LICENSES/GFDL-1.3 create mode 100644 LICENSES/GFDL-1.3-or-later.txt delete mode 100644 LICENSES/MIT create mode 100644 LICENSES/MIT.txt diff --git a/.gitignore b/.gitignore index 71d0225..bc46bd4 100644 --- a/.gitignore +++ b/.gitignore @@ -1 +1,4 @@ -/developer-manual.html \ No newline at end of file +# SPDX-FileCopyrightText: Alyssa Ross <hi(a)alyssa.is> +# SPDX-License-Identifier: CC0-1.0 + +/developer-manual.html diff --git a/LICENSES/CC-BY-SA-4.0 b/LICENSES/CC-BY-SA-4.0 deleted file mode 100644 index a73481c..0000000 --- a/LICENSES/CC-BY-SA-4.0 +++ /dev/null @@ -1,428 +0,0 @@ -Attribution-ShareAlike 4.0 International - -======================================================================= - -Creative Commons Corporation ("Creative Commons") is not a law firm and -does not provide legal services or legal advice. Distribution of -Creative Commons public licenses does not create a lawyer-client or -other relationship. Creative Commons makes its licenses and related -information available on an "as-is" basis. Creative Commons gives no -warranties regarding its licenses, any material licensed under their -terms and conditions, or any related information. Creative Commons -disclaims all liability for damages resulting from their use to the -fullest extent possible. - -Using Creative Commons Public Licenses - -Creative Commons public licenses provide a standard set of terms and -conditions that creators and other rights holders may use to share -original works of authorship and other material subject to copyright -and certain other rights specified in the public license below. 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If your rights have been terminated and not permanently -reinstated, receipt of a copy of some or all of the same material does -not give you any rights to use it. - - -10. FUTURE REVISIONS OF THIS LICENSE - -The Free Software Foundation may publish new, revised versions of the -GNU Free Documentation 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. See -https://www.gnu.org/licenses/. - -Each version of the License is given a distinguishing version number. -If the Document specifies that a particular numbered version of this -License "or any later version" applies to it, you have the option of -following the terms and conditions either of that specified version or -of any later version that has been published (not as a draft) by the -Free Software Foundation. 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PREAMBLE + +The purpose of this License is to make a manual, textbook, or other functional +and useful document "free" in the sense of freedom: to assure everyone the +effective freedom to copy and redistribute it, with or without modifying it, +either commercially or noncommercially. Secondarily, this License preserves +for the author and publisher a way to get credit for their work, while not +being considered responsible for modifications made by others. + +This License is a kind of "copyleft", which means that derivative works of +the document must themselves be free in the same sense. It complements the +GNU General Public License, which is a copyleft license designed for free +software. + +We have designed this License in order to use it for manuals for free software, +because free software needs free documentation: a free program should come +with manuals providing the same freedoms that the software does. 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Include, immediately after the copyright notices, a license notice giving +the public permission to use the Modified Version under the terms of this +License, in the form shown in the Addendum below. + +G. Preserve in that license notice the full lists of Invariant Sections and +required Cover Texts given in the Document's license notice. H. Include an +unaltered copy of this License. + +I. Preserve the section Entitled "History", Preserve its Title, and add to +it an item stating at least the title, year, new authors, and publisher of +the Modified Version as given on the Title Page. If there is no section Entitled +"History" in the Document, create one stating the title, year, authors, and +publisher of the Document as given on its Title Page, then add an item describing +the Modified Version as stated in the previous sentence. + +J. Preserve the network location, if any, given in the Document for public +access to a Transparent copy of the Document, and likewise the network locations +given in the Document for previous versions it was based on. These may be +placed in the "History" section. You may omit a network location for a work +that was published at least four years before the Document itself, or if the +original publisher of the version it refers to gives permission. + +K. For any section Entitled "Acknowledgements" or "Dedications", Preserve +the Title of the section, and preserve in the section all the substance and +tone of each of the contributor acknowledgements and/or dedications given +therein. + +L. Preserve all the Invariant Sections of the Document, unaltered in their +text and in their titles. Section numbers or the equivalent are not considered +part of the section titles. + +M. Delete any section Entitled "Endorsements". Such a section may not be included +in the Modified Version. + +N. Do not retitle any existing section to be Entitled "Endorsements" or to +conflict in title with any Invariant Section. + + O. Preserve any Warranty Disclaimers. + +If the Modified Version includes new front-matter sections or appendices that +qualify as Secondary Sections and contain no material copied from the Document, +you may at your option designate some or all of these sections as invariant. +To do this, add their titles to the list of Invariant Sections in the Modified +Version's license notice. These titles must be distinct from any other section +titles. + +You may add a section Entitled "Endorsements", provided it contains nothing +but endorsements of your Modified Version by various parties--for example, +statements of peer review or that the text has been approved by an organization +as the authoritative definition of a standard. + +You may add a passage of up to five words as a Front-Cover Text, and a passage +of up to 25 words as a Back-Cover Text, to the end of the list of Cover Texts +in the Modified Version. Only one passage of Front-Cover Text and one of Back-Cover +Text may be added by (or through arrangements made by) any one entity. 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COMBINING DOCUMENTS + +You may combine the Document with other documents released under this License, +under the terms defined in section 4 above for modified versions, provided +that you include in the combination all of the Invariant Sections of all of +the original documents, unmodified, and list them all as Invariant Sections +of your combined work in its license notice, and that you preserve all their +Warranty Disclaimers. + +The combined work need only contain one copy of this License, and multiple +identical Invariant Sections may be replaced with a single copy. If there +are multiple Invariant Sections with the same name but different contents, +make the title of each such section unique by adding at the end of it, in +parentheses, the name of the original author or publisher of that section +if known, or else a unique number. Make the same adjustment to the section +titles in the list of Invariant Sections in the license notice of the combined +work. + +In the combination, you must combine any sections Entitled "History" in the +various original documents, forming one section Entitled "History"; likewise +combine any sections Entitled "Acknowledgements", and any sections Entitled +"Dedications". You must delete all sections Entitled "Endorsements". + + 6. COLLECTIONS OF DOCUMENTS + +You may make a collection consisting of the Document and other documents released +under this License, and replace the individual copies of this License in the +various documents with a single copy that is included in the collection, provided +that you follow the rules of this License for verbatim copying of each of +the documents in all other respects. + +You may extract a single document from such a collection, and distribute it +individually under this License, provided you insert a copy of this License +into the extracted document, and follow this License in all other respects +regarding verbatim copying of that document. + + 7. AGGREGATION WITH INDEPENDENT WORKS + +A compilation of the Document or its derivatives with other separate and independent +documents or works, in or on a volume of a storage or distribution medium, +is called an "aggregate" if the copyright resulting from the compilation is +not used to limit the legal rights of the compilation's users beyond what +the individual works permit. When the Document is included in an aggregate, +this License does not apply to the other works in the aggregate which are +not themselves derivative works of the Document. + +If the Cover Text requirement of section 3 is applicable to these copies of +the Document, then if the Document is less than one half of the entire aggregate, +the Document's Cover Texts may be placed on covers that bracket the Document +within the aggregate, or the electronic equivalent of covers if the Document +is in electronic form. Otherwise they must appear on printed covers that bracket +the whole aggregate. + + 8. TRANSLATION + +Translation is considered a kind of modification, so you may distribute translations +of the Document under the terms of section 4. Replacing Invariant Sections +with translations requires special permission from their copyright holders, +but you may include translations of some or all Invariant Sections in addition +to the original versions of these Invariant Sections. You may include a translation +of this License, and all the license notices in the Document, and any Warranty +Disclaimers, provided that you also include the original English version of +this License and the original versions of those notices and disclaimers. In +case of a disagreement between the translation and the original version of +this License or a notice or disclaimer, the original version will prevail. + +If a section in the Document is Entitled "Acknowledgements", "Dedications", +or "History", the requirement (section 4) to Preserve its Title (section 1) +will typically require changing the actual title. + + 9. TERMINATION + +You may not copy, modify, sublicense, or distribute the Document except as +expressly provided under this License. Any attempt otherwise to copy, modify, +sublicense, or distribute it is void, and will automatically terminate your +rights under this License. + +However, if you cease all violation of this License, then your license from +a particular copyright holder is reinstated (a) provisionally, unless and +until the copyright holder explicitly and finally terminates your license, +and (b) permanently, if the copyright holder fails to notify you of the violation +by some reasonable means prior to 60 days after the cessation. + +Moreover, your license from a particular copyright holder is reinstated permanently +if the copyright holder notifies you of the violation by some reasonable means, +this is the first time you have received notice of violation of this License +(for any work) from that copyright holder, and you cure the violation prior +to 30 days after your receipt of the notice. + +Termination of your rights under this section does not terminate the licenses +of parties who have received copies or rights from you under this License. +If your rights have been terminated and not permanently reinstated, receipt +of a copy of some or all of the same material does not give you any rights +to use it. + + 10. FUTURE REVISIONS OF THIS LICENSE + +The Free Software Foundation may publish new, revised versions of the GNU +Free Documentation 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. See http://www.gnu.org/copyleft/. + +Each version of the License is given a distinguishing version number. If the +Document specifies that a particular numbered version of this License "or +any later version" applies to it, you have the option of following the terms +and conditions either of that specified version or of any later version that +has been published (not as a draft) by the Free Software Foundation. If the +Document does not specify a version number of this License, you may choose +any version ever published (not as a draft) by the Free Software Foundation. +If the Document specifies that a proxy can decide which future versions of +this License can be used, that proxy's public statement of acceptance of a +version permanently authorizes you to choose that version for the Document. + + 11. RELICENSING + +"Massive Multiauthor Collaboration Site" (or "MMC Site") means any World Wide +Web server that publishes copyrightable works and also provides prominent +facilities for anybody to edit those works. A public wiki that anybody can +edit is an example of such a server. A "Massive Multiauthor Collaboration" +(or "MMC") contained in the site means any set of copyrightable works thus +published on the MMC site. + +"CC-BY-SA" means the Creative Commons Attribution-Share Alike 3.0 license +published by Creative Commons Corporation, a not-for-profit corporation with +a principal place of business in San Francisco, California, as well as future +copyleft versions of that license published by that same organization. + +"Incorporate" means to publish or republish a Document, in whole or in part, +as part of another Document. + +An MMC is "eligible for relicensing" if it is licensed under this License, +and if all works that were first published under this License somewhere other +than this MMC, and subsequently incorporated in whole or in part into the +MMC, (1) had no cover texts or invariant sections, and (2) were thus incorporated +prior to November 1, 2008. + +The operator of an MMC Site may republish an MMC contained in the site under +CC-BY-SA on the same site at any time before August 1, 2009, provided the +MMC is eligible for relicensing. ADDENDUM: How to use this License for your +documents + +To use this License in a document you have written, include a copy of the +License in the document and put the following copyright and license notices +just after the title page: + +Copyright (c) YEAR YOUR NAME. Permission is granted to copy, distribute and/or +modify this document under the terms of the GNU Free Documentation License, +Version 1.3 or any later version published by the Free Software Foundation; +with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. +A copy of the license is included in the section entitled "GNU Free Documentation +License". + +If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, replace +the "with...Texts." line with this: + +with the Invariant Sections being LIST THEIR TITLES, with the Front-Cover +Texts being LIST, and with the Back-Cover Texts being LIST. + +If you have Invariant Sections without Cover Texts, or some other combination +of the three, merge those two alternatives to suit the situation. + +If your document contains nontrivial examples of program code, we recommend +releasing these examples in parallel under your choice of free software license, +such as the GNU General Public License, to permit their use in free software. diff --git a/LICENSES/MIT b/LICENSES/MIT deleted file mode 100644 index 7215f69..0000000 --- a/LICENSES/MIT +++ /dev/null @@ -1,17 +0,0 @@ -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. \ No newline at end of file diff --git a/LICENSES/MIT.txt b/LICENSES/MIT.txt new file mode 100644 index 0000000..204b93d --- /dev/null +++ b/LICENSES/MIT.txt @@ -0,0 +1,19 @@ +MIT License Copyright (c) <year> <copyright holders> + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is furnished +to do so, subject to the following conditions: + +The above copyright notice and this permission notice (including the next +paragraph) shall be included in all copies or substantial portions of the +Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS +FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS +OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF +OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/Makefile b/Makefile index b923b17..b595def 100644 --- a/Makefile +++ b/Makefile @@ -1,3 +1,4 @@ +# SPDX-FileCopyrightText: 2020 Alyssa Ross # SPDX-License-Identifier: MIT ASCIIDOCTOR = asciidoctor diff --git a/default.nix b/default.nix index 3f3b4aa..dc920b5 100644 --- a/default.nix +++ b/default.nix @@ -1,3 +1,4 @@ +# SPDX-FileCopyrightText: 2020 Alyssa Ross <hi(a)alyssa.is> # SPDX-License-Identifier: MIT with import <nixpkgs> {}; diff --git a/developer-manual.adoc b/developer-manual.adoc index 0f4b30f..da37ef0 100644 --- a/developer-manual.adoc +++ b/developer-manual.adoc @@ -1,5 +1,10 @@ +// SPDX-FileCopyrightText: 2020 Alyssa Ross <hi(a)alyssa.is> +// SPDX-FileCopyrightText: 2020 Cole Helbling <cole.e.helbling(a)outlook.com> // SPDX-License-Identifier: GFDL-1.3-or-later OR CC-BY-SA-4.0 +// XXX: Remember to add new copyright notices to the +// "Copyright and License" section of the content, too! + = Spectrum Developers’ Guide Alyssa Ross <hi(a)alyssa.is> :toc: left @@ -320,7 +325,10 @@ directly required by Spectrum's use case for the program. [appendix] == Copyright and License -Copyright 2020 Alyssa Ross. +Copyright 2020 Alyssa Ross <hi(a)alyssa.is>. + +Copyright 2020 Cole Helbling <cole.e.helbling(a)outlook.com>. + +// XXX: Remember to add new copyright notices as +// SPDX-FileCopyrightText comments at the top of the file, too! Permission is granted to copy, distribute and/or modify this document under either the terms of the -- 2.27.0

2 2

[PATCH www] Fix index links on top-level pages
by Alyssa Ross 31 Jul '20

31 Jul '20

Linking to .. means linking to the directory above these pages, when we actually want to link to the directory these pages are in (which should display index.html). This doesn't have any effect on <https://spectrum-os.org/>, because the site is already at the top level, but it would cause a problem if the site was elsewhere -- for example, when viewing it locally while working on it. --- contributing.html | 2 +- design.html | 2 +- motivation.html | 2 +- participating.html | 2 +- todo.html | 2 +- 5 files changed, 5 insertions(+), 5 deletions(-) diff --git a/contributing.html b/contributing.html index 430c52e..8999fee 100644 --- a/contributing.html +++ b/contributing.html @@ -13,7 +13,7 @@ <body> <nav> - <a href="..">Spectrum</a> + <a href=".">Spectrum</a> </nav> <h1>Contributing to Spectrum</h1> diff --git a/design.html b/design.html index 234f656..e725989 100644 --- a/design.html +++ b/design.html @@ -13,7 +13,7 @@ <body> <nav> - <a href="..">Spectrum</a> + <a href=".">Spectrum</a> </nav> <h1>Spectrum Design</h1> diff --git a/motivation.html b/motivation.html index af8e045..c7d5667 100644 --- a/motivation.html +++ b/motivation.html @@ -13,7 +13,7 @@ <body> <nav> - <a href="..">Spectrum</a> + <a href=".">Spectrum</a> </nav> <h1>Motivation for Spectrum</h1> diff --git a/participating.html b/participating.html index 18f940b..2d9acab 100644 --- a/participating.html +++ b/participating.html @@ -13,7 +13,7 @@ <body> <nav> - <a href="..">Spectrum</a> + <a href=".">Spectrum</a> </nav> <h1>Participating in Spectrum</h1> diff --git a/todo.html b/todo.html index 977179f..077f20a 100644 --- a/todo.html +++ b/todo.html @@ -13,7 +13,7 @@ <body> <nav> - <a href="..">Spectrum</a> + <a href=".">Spectrum</a> </nav> <h1>Contribution ideas</h1> -- 2.27.0

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[PATCH www] bibliography.html: create
by Alyssa Ross 31 Jul '20

31 Jul '20

I thought it might be useful to have a place to collect links that are particularly relevant to Spectrum. This serves two purposes: to provide further external reading for people learning about Spectrum from the website; and to make it easy for us to find links we refer to often. At some point I might add author names, etc. to these links, and make them a bit more like proper citations, but for now I wanted to get an initial version of this out there rather than bikeshedding citation formats. --- bibliography.html | 111 ++++++++++++++++++++++++++++++++++++++++++++++ index.html | 1 + 2 files changed, 112 insertions(+) create mode 100644 bibliography.html diff --git a/bibliography.html b/bibliography.html new file mode 100644 index 0000000..e90f0be --- /dev/null +++ b/bibliography.html @@ -0,0 +1,111 @@ +<!doctype html> +<html lang="en"> + +<head> + +<meta charset="utf-8"> +<meta name="viewport" content="width=device-width,initial-scale=1"> + +<link rel="stylesheet" href="style.css"> + +<title>Spectrum Bibliography</title> + +<body> + +<nav> + <a href="..">Spectrum</a> +</nav> + +<h1>Bibliography</h1> + +<ul> + + <li><cite><a href="https://flatkill.org/">Flatpak — a security + nightmare</a></cite> + + <li><cite><a href="https://blog.invisiblethings.org/papers/2015/x86_harmful.pdf">Intel + x86 Considered Harmful</a></cite> + + <li><cite><a href="https://www.qubes-os.org/">Qubes OS</a></cite> + + <li><cite><a href="https://doi.org/10.1145/3132747.3132763">My VM is + Lighter (and Safer) than your Container</a></cite> + + <li><cite><a href="https://doi.org/10.1145/3342195.3387526">A Linux + in Unikernel Clothing</a></cite> + + <li><cite><a href="https://www.ozlabs.org/~rusty/virtio-spec/virtio-paper.pdf">virtio: + Towards a De-Facto Standard For Virtual I/O Devices</a></cite> + + <li><cite><a href="https://docs.oasis-open.org/virtio/virtio/v1.1/virtio-v1.1.html">Virtual + I/O Device (VIRTIO) Version 1.1</a></cite> + + <li><cite><a href="https://lwn.net/Articles/474088/">Safe device + assignment with VFIO</a></cite> + + <li><cite><a href="https://lists.ozlabs.org/pipermail/lguest/2008-March/001064.html">Inter-guest + virtio I/O example with lguest</a></cite> + + <li><cite><a href="https://lwn.net/Articles/610174/">Supporting + filesystems in persistent memory</a></cite> + + <li><cite><a href="https://lwn.net/Articles/788333/">A filesystem + for virtualization</a></cite> + + <li><cite><a href="https://www.phoronix.com/scan.php?page=news_item&px=VirtIO-DRM-Window-Server">VirtIO + DRM Window Server Support: Letting Guest VMs Interface With Host's + Compositor</a></cite> + + <li><cite><a href="https://www.qemu.org/docs/master/interop/vhost-user.html">Vhost-user + Protocol</a></cite> + + <li><cite><a href="https://wiki.qemu.org/Features/VirtioVhostUser">Features/VirtioVhostUser + — QEMU</a></cite> + + <li><cite><a href="https://chromium.googlesource.com/chromiumos/third_party/kernel/+/refs/head…">Wayland + Virtio Driver</a></cite> + + <li><cite><a href="https://lwn.net/Articles/694291/">An initial + release of Flatpak portals for GNOME</a></cite> + + <li><cite><a href="https://users.ece.cmu.edu/~ganger/712.fall02/papers/p761-thompson.pdf">Reflections + on Trusting Trust</a></cite> + + <li><cite><a href="https://dwheeler.com/trusting-trust/dissertation/wheeler-trusting-trust-ddc…">Fully + Countering Trusting Trust through Diverse Double-Compiling</a></cite> + + <li><cite><a href="https://reproducible-builds.org/docs/buy-in/">Reproducible + Builds — Buy-in</a></cite> + + <li><cite><a href="https://edolstra.github.io/pubs/phd-thesis.pdf">The + Purely Functional Software Deployment Model</a></cite> + + <li><cite><a href="https://nixos.org/features.html">NixOS — + Features</a></cite> + + <li><cite><a href="https://hal.inria.fr/hal-00824004/document">Functional + Package Management with Guix</a></cite> + + <li><cite><a href="https://chromium.googlesource.com/chromiumos/platform/crosvm">Chrome + OS Virtual Machine Monitor</a></cite> + + <li><cite><a href="https://prilik.com/blog/2019/05/16/crosvm-paravirt.html">Paravirtualized + Devices in crosvm — a Performance Panacea for Modern Virtual + Machines</a></cite> + + <li><cite><a href="https://assets.amazon.science/96/c6/302e527240a3b1f86c86c3e8fc3d/firecracke…">Firecracker: + Lightweight Virtualization for Serverless Applications</a></cite> + + <li><cite><a href="https://github.com/cloud-hypervisor/cloud-hypervisor">cloud-hypervisor</a></cite> + +</ul> + +<p> +<small>Permission is granted to copy, distribute and/or modify this +document under either the terms of the +<a href="https://creativecommons.org/licenses/by-sa/4.0/">Creative +Commons Attribution-ShareAlike 4.0 International License</a>, or the +<a href="https://www.gnu.org/licenses/fdl-1.3.html">GNU Free +Documentation License, Version 1.3</a> or any later version published +by the Free Software Foundation; with no Invariant Sections, no +Front-Cover Texts, and no Back-Cover Texts.</small> diff --git a/index.html b/index.html index e98443b..08974b1 100644 --- a/index.html +++ b/index.html @@ -52,6 +52,7 @@ Commission. <ul> <li><a href="motivation.html">Motivation for Spectrum</a> <li><a href="design.html">Design</a> + <li><a href="bibliography.html">Bibliography</a> </ul> <h2>Development progress</h2> -- 2.27.0

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