docs: a website, in three files
index.html, style.css, app.js and the three marks. No build step, no dependencies, no framework -- it opens from a file:// URL. The palette is not a design decision: it is include/theme.h transcribed, including the rule that header enforces. PSOGM purple appears exactly once, on the crash-screen section, because branding/README.md says a colour used everywhere means nothing. The typefaces are Roboto and JetBrains Mono, both already in ports/ and both requested from the system rather than downloaded -- a font file would outweigh the rest of the site. The boot log in the hero is real lines from a real boot. The script is decoration and the page is complete without it; it does nothing at all under prefers-reduced-motion. The feature tags (runs / in progress / designed) are a promise, and the README says so: anything marked `runs` is in the tree and works today. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VQ7Qx8E1q1M1bbCq8QLHS2
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12
docs/Website/Assets/guru.svg
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docs/Website/Assets/guru.svg
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" width="200" height="200">
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<title>Guru — the PSOGM face</title>
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<desc>The crash-screen face. Chamfered corners quote the old SchOS letterforms.
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Drawn here for reference only: kernel/core/panic.c builds it from primitives
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rather than from a bitmap, so it scales with the display and costs nothing in
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the kernel image.</desc>
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<path fill="#7C5CFF" d="M58 24 L142 24 L176 58 L176 142 L142 176 L58 176 L24 142 L24 58 Z"/>
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<path fill="#2B0F52" d="M74 82 h16 v22 h-16 Z"/>
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<path fill="#2B0F52" d="M110 82 h16 v22 h-16 Z"/>
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<path fill="#2B0F52" d="M72 128 h56 v11 h-56 Z"/>
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</svg>
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After Width: | Height: | Size: 655 B |
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docs/Website/Assets/shift.svg
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docs/Website/Assets/shift.svg
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" width="200" height="200">
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<title>SchOS — Shift</title>
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<desc>Three slabs, displaced. The layer diagram in docs/architecture/README.md
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as a solid object, and the kernel's name (SchIFT) as a shape.
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Each slab shows three faces: the top, the front edge under its lower side, and
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the right-end wall under its right diagonal. The right wall is not optional --
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without it the slab has no thickness where it is widest, and the corner reads
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as a hole rather than an edge.
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Geometry is shared with "shift-mask.svg"; see that file.</desc>
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<!-- bottom slab -->
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<path fill="#3C2E85" d="M54 126 L158 126 L128 156 L24 156 Z"/>
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<path fill="#31256E" d="M24 156 L128 156 L128 167 L24 167 Z"/>
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<path fill="#291F5C" d="M158 126 L158 137 L128 167 L128 156 Z"/>
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<!-- middle slab -->
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<path fill="#5B44C4" d="M72 84 L176 84 L146 114 L42 114 Z"/>
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<path fill="#4B37A6" d="M42 114 L146 114 L146 125 L42 125 Z"/>
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<path fill="#3F2D8C" d="M176 84 L176 95 L146 125 L146 114 Z"/>
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<!-- top slab -->
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<path fill="#7C5CFF" d="M90 42 L194 42 L164 72 L60 72 Z"/>
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<path fill="#6949E0" d="M60 72 L164 72 L164 83 L60 83 Z"/>
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<path fill="#5B3FC9" d="M194 42 L194 53 L164 83 L164 72 Z"/>
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</svg>
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After Width: | Height: | Size: 1.2 KiB |
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docs/Website/Assets/uberblock.svg
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docs/Website/Assets/uberblock.svg
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" width="200" height="200">
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<title>SchFS — Uberblock</title>
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<desc>The uberblock ring: slots written round-robin, one of them newest.
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Mount takes the highest-numbered slot that validates, which is the whole
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consistency argument for the format.
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Every slot is an explicit annular sector. An earlier version drew them with
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stroke-dasharray on a circle, which is shorter to write and wrong in two ways:
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a dash centred on the path start straddles the closure and renders as TWO
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pieces with a seam between them, and the normal slot underneath the marked one
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still drew, showing through. Neither can happen here -- the marked slot is one
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shape and the slot it replaces is simply not emitted.
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12 slots at 20 degrees of ink and 10 of gap, which closes at 360 exactly. The
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marked slot is index 1, counting clockwise from the top.
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It is marked twice over: it carries the accent, the same colour as the root at
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the centre, and it reaches outward past the ring while sharing the inner edge
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with every other slot. The colour is the reading on screen; the size is what
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survives include/logo.h, which is a single coverage channel and keeps no
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colour at all.
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Stands alone, with no reference to SchOS, as projects/schfs-linux/README.md
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requires.</desc>
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<g fill="#3C2E85">
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<path d="M85.93 20.23 A81.00 81.00 0 0 1 114.07 20.23 L110.25 41.90 A59.00 59.00 0 0 0 89.75 41.90 Z"/>
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<path d="M162.05 47.93 A81.00 81.00 0 0 1 176.12 72.30 L155.44 79.82 A59.00 59.00 0 0 0 145.20 62.08 Z"/>
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<path d="M179.77 85.93 A81.00 81.00 0 0 1 179.77 114.07 L158.10 110.25 A59.00 59.00 0 0 0 158.10 89.75 Z"/>
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<path d="M176.12 127.70 A81.00 81.00 0 0 1 162.05 152.07 L145.20 137.92 A59.00 59.00 0 0 0 155.44 120.18 Z"/>
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<path d="M152.07 162.05 A81.00 81.00 0 0 1 127.70 176.12 L120.18 155.44 A59.00 59.00 0 0 0 137.92 145.20 Z"/>
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<path d="M114.07 179.77 A81.00 81.00 0 0 1 85.93 179.77 L89.75 158.10 A59.00 59.00 0 0 0 110.25 158.10 Z"/>
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<path d="M72.30 176.12 A81.00 81.00 0 0 1 47.93 162.05 L62.08 145.20 A59.00 59.00 0 0 0 79.82 155.44 Z"/>
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<path d="M37.95 152.07 A81.00 81.00 0 0 1 23.88 127.70 L44.56 120.18 A59.00 59.00 0 0 0 54.80 137.92 Z"/>
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<path d="M20.23 114.07 A81.00 81.00 0 0 1 20.23 85.93 L41.90 89.75 A59.00 59.00 0 0 0 41.90 110.25 Z"/>
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<path d="M23.88 72.30 A81.00 81.00 0 0 1 37.95 47.93 L54.80 62.08 A59.00 59.00 0 0 0 44.56 79.82 Z"/>
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<path d="M47.93 37.95 A81.00 81.00 0 0 1 72.30 23.88 L79.82 44.56 A59.00 59.00 0 0 0 62.08 54.80 Z"/>
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</g>
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<g fill="#7C5CFF">
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<path d="M132.15 11.67 A94.00 94.00 0 0 1 160.42 27.99 L137.92 54.80 A59.00 59.00 0 0 0 120.18 44.56 Z"/>
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<circle cx="100" cy="100" r="20"/>
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</g>
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</svg>
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After Width: | Height: | Size: 2.7 KiB |
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docs/Website/README.md
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docs/Website/README.md
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<!-- SPDX-License-Identifier: Apache-2.0 -->
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# The website
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Three files and a folder of marks. No build step, no dependencies, no
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framework — open `index.html` and it works, including from a `file://` URL.
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```
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index.html the page
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style.css the palette, transcribed from include/theme.h
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app.js two behaviours: the boot log types, sections fade in
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Assets/ shift.svg (the logo), uberblock.svg (SchFS), guru.svg (PSOGM)
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```
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## The rules it follows
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**The palette is not a design decision.** It is `include/theme.h`, copied. A
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site describing an operating system should look like the operating system, and
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copying the header means the two cannot drift apart by accident.
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**PSOGM purple appears exactly once.** `#4B1D9A` is on the crash-screen section
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and nowhere else, because [../branding/README.md](../branding/README.md) says
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it means *the machine stopped* and that a colour used everywhere means nothing.
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If it shows up in a second place, that is a bug in the page.
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**The typefaces are the ones the OS ships.** Roboto for text and JetBrains Mono
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for the system voice — both already in `ports/`, both already in `NOTICE`. They
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are requested from the system rather than downloaded: a font file would be
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larger than the entire rest of the site.
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**The script is optional.** If `app.js` fails to load the page is still
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complete and still readable. Everything it does is decoration, and it honours
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`prefers-reduced-motion` by doing none of it.
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**The boot log is real.** The lines in `app.js` are from an actual boot, not
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invented. The timer calibration line is there deliberately; see section 13 of
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[../history/kernel.md](../history/kernel.md) for what it cost.
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## Editing it
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The numbers in the *Numbers* section are measured, not estimated, and they go
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stale. To refresh them:
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```sh
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find kernel include -name '*.c' -o -name '*.h' | xargs wc -l | tail -1
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grep -c '^SYSCALL' kernel/sys/table.inc
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```
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The feature cards carry a tag — `runs`, `in progress`, or `designed` — and the
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tag is a promise. Anything marked `runs` is in the tree and works today. When
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that stops being true, change the tag rather than the wording.
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docs/Website/app.js
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docs/Website/app.js
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/* SPDX-License-Identifier: Apache-2.0
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*
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* Two behaviours, no framework:
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* 1. the hero console types a real boot log
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* 2. sections fade in once, as they arrive
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*
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* Both are decoration. If this file fails to load the page is still complete
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* and still readable, which is the test any script on a documentation site
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* should have to pass.
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*/
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(function () {
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"use strict";
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var reduced = window.matchMedia &&
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window.matchMedia("(prefers-reduced-motion: reduce)").matches;
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/* ---- 1. the boot log ------------------------------------------------
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* These are real lines from a real boot, not invented ones. The timer
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* calibration line in particular is there because of what it cost: the
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* clock ran seven times slow until a graphics driver was made to
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* acknowledge its own interrupt. See docs/history/kernel.md.
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*/
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var LINES = [
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{ t: "[ 0.000]", k: "SchIFT", s: " 64-bit, 2 cpus" },
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{ t: "[ 0.004]", k: "cpu0", s: ": lapic timer 999949260 Hz, tsc 3792 MHz" },
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{ t: "[ 0.061]", k: "virtio-gpu", s: ": 1280x800, 4000 KB framebuffer, irq 11" },
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{ t: "[ 0.088]", k: "e1000", s: ": 52:54:00:12:34:56, link up, irq 11" },
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{ t: "[ 0.143]", k: "schfs0", s: ": mounted, generation 41" },
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{ t: "[ 0.169]", k: "net", s: ": eth0 10.0.2.15/255.255.255.0" },
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{ t: "[ 0.204]", k: "schinit", s: ": 4 jobs", g: true },
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{ t: "", k: "", s: "# " }
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];
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var out = document.getElementById("bootlog");
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function span(cls, text) {
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var e = document.createElement("span");
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|
if (cls) e.className = cls;
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e.textContent = text;
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return e;
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|
}
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function emit(line) {
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|
if (line.t) {
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out.appendChild(span("t", line.t + " "));
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out.appendChild(span("k", line.k));
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}
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out.appendChild(span(line.g ? "g" : "", line.s));
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out.appendChild(document.createTextNode("\n"));
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}
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function cursor() {
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var c = document.createElement("i");
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c.className = "cursor";
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out.appendChild(c);
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}
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if (!out) {
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/* nothing to do */
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|
} else if (reduced) {
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LINES.forEach(emit); // the whole log at once, no animation
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|
cursor();
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|
} else {
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var i = 0;
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|
(function step() {
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|
if (i >= LINES.length) { cursor(); return; }
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|
emit(LINES[i++]);
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|
/* Uneven on purpose: a boot that ticks out at a metronome's pace reads
|
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|
as a progress bar rather than as a machine doing different work. */
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|
setTimeout(step, 180 + Math.random() * 220);
|
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|
})();
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|
}
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|
|
||||||
|
/* ---- 2. reveal on scroll ------------------------------------------ */
|
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|
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|
var targets = document.querySelectorAll(".reveal");
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|
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|
if (reduced || !("IntersectionObserver" in window)) {
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|
Array.prototype.forEach.call(targets, function (el) { el.classList.add("in"); });
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|
return;
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|
}
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|
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|
var io = new IntersectionObserver(function (entries) {
|
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|
entries.forEach(function (entry) {
|
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|
if (!entry.isIntersecting) return;
|
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|
entry.target.classList.add("in");
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||||||
|
io.unobserve(entry.target); // once, not on every scroll past
|
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|
});
|
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|
}, { rootMargin: "0px 0px -12% 0px", threshold: 0.05 });
|
||||||
|
|
||||||
|
Array.prototype.forEach.call(targets, function (el) { io.observe(el); });
|
||||||
|
})();
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294
docs/Website/index.html
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docs/Website/index.html
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|
<!DOCTYPE html>
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|
<html lang="en">
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|
<head>
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|
<meta charset="utf-8">
|
||||||
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||||
|
<title>SchOS — a 64-bit operating system written from scratch</title>
|
||||||
|
<meta name="description" content="SchOS is a from-scratch x86-64 operating system: the SchIFT kernel, the SchFS copy-on-write filesystem, a UEFI loader, and a userland that runs unmodified musl and toybox.">
|
||||||
|
<link rel="icon" href="Assets/shift.svg" type="image/svg+xml">
|
||||||
|
<link rel="stylesheet" href="style.css">
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
|
||||||
|
<header class="top">
|
||||||
|
<div class="wrap">
|
||||||
|
<a class="brand" href="#top">
|
||||||
|
<img src="Assets/shift.svg" alt="">
|
||||||
|
SchOS
|
||||||
|
</a>
|
||||||
|
<nav>
|
||||||
|
<a href="#origin">Origin</a>
|
||||||
|
<a href="#stack">The stack</a>
|
||||||
|
<a href="#what">What it has</a>
|
||||||
|
<a href="#numbers">Numbers</a>
|
||||||
|
<a href="#docs">Docs</a>
|
||||||
|
</nav>
|
||||||
|
</div>
|
||||||
|
</header>
|
||||||
|
|
||||||
|
<main id="top">
|
||||||
|
|
||||||
|
<section class="hero">
|
||||||
|
<div class="wrap">
|
||||||
|
<div>
|
||||||
|
<h1><img class="mark" src="Assets/shift.svg" alt="">SchOS</h1>
|
||||||
|
<p>
|
||||||
|
A 64-bit operating system written from scratch — its own kernel, its own
|
||||||
|
filesystem, its own bootloader. It boots on UEFI, drives real hardware,
|
||||||
|
and runs unmodified <code>musl</code> and <code>toybox</code> on top.
|
||||||
|
</p>
|
||||||
|
<div class="cta">
|
||||||
|
<a class="btn primary" href="#what">What it has</a>
|
||||||
|
<a class="btn" href="#origin">Where it started</a>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
<div class="console" aria-label="Boot log">
|
||||||
|
<div class="console-bar">
|
||||||
|
<i class="dot live"></i> ttyS0
|
||||||
|
<span>SchIFT</span>
|
||||||
|
</div>
|
||||||
|
<pre id="bootlog" aria-live="polite"></pre>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section id="origin" class="reveal">
|
||||||
|
<div class="wrap">
|
||||||
|
<p class="eyebrow">Origin</p>
|
||||||
|
<h2>It started as a teaching kernel and stopped being one</h2>
|
||||||
|
<p class="lede">
|
||||||
|
SchOS began as <a href="https://github.com/mit-pdos/xv6-public">xv6</a>, MIT's
|
||||||
|
teaching operating system: 32-bit, single core, one filesystem, a few dozen
|
||||||
|
syscalls. Almost none of that survives. What follows is what replaced it.
|
||||||
|
</p>
|
||||||
|
|
||||||
|
<div class="origin-grid">
|
||||||
|
<div class="step">
|
||||||
|
<span class="when">First</span>
|
||||||
|
<h3>64-bit, and more than one core</h3>
|
||||||
|
<p>
|
||||||
|
Four-level paging, a real SMP bring-up, per-CPU state and a trap path
|
||||||
|
that survives both. This is the part that invalidates most of what a
|
||||||
|
32-bit uniprocessor kernel assumes.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="step">
|
||||||
|
<span class="when">Then</span>
|
||||||
|
<h3>Its own filesystem</h3>
|
||||||
|
<p>
|
||||||
|
xv6's log-structured filesystem was replaced by <b>SchFS</b>: a
|
||||||
|
copy-on-write B-tree with an uberblock ring, extents and checksummed
|
||||||
|
metadata. A crash leaves either the old tree or the new one.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="step">
|
||||||
|
<span class="when">Then</span>
|
||||||
|
<h3>A Linux-shaped ABI</h3>
|
||||||
|
<p>
|
||||||
|
The syscall table adopted Linux numbering, which is what makes an
|
||||||
|
unmodified musl and an unmodified toybox run. The table is one
|
||||||
|
<code>.inc</code> file, and it is the seam the whole system is built around.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="step">
|
||||||
|
<span class="when">Now</span>
|
||||||
|
<h3>Hardware, not emulation</h3>
|
||||||
|
<p>
|
||||||
|
A UEFI loader, xHCI and USB storage, an e1000 with a real TCP/IP stack,
|
||||||
|
virtio-gpu and VBE framebuffers, and a device model where a driver never
|
||||||
|
names its consumer.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section id="stack" class="reveal">
|
||||||
|
<div class="wrap">
|
||||||
|
<p class="eyebrow">Architecture</p>
|
||||||
|
<h2>Two seams hold the whole thing together</h2>
|
||||||
|
<p class="lede">
|
||||||
|
Above the syscall table, software is ordinary and portable. Below the device
|
||||||
|
model, a driver never names its consumer and a consumer never names a driver.
|
||||||
|
Everything else is arrangement.
|
||||||
|
</p>
|
||||||
|
|
||||||
|
<div class="stack">
|
||||||
|
<div class="layer"><span class="name">userland</span><span class="what">toybox, mksh, musl, and the first-party programs in <code>cmd/</code></span></div>
|
||||||
|
<div class="layer"><span class="name">schinit</span><span class="what">PID 1 — job manifests and supervision</span></div>
|
||||||
|
<div class="layer seam"><span class="name">syscall table</span><span class="what">Linux numbering, one <code>.inc</code> file — the ABI seam</span></div>
|
||||||
|
<div class="layer"><span class="name">kernel services</span><span class="what">VFS, sockets, signals, mmap, poll, procfs</span></div>
|
||||||
|
<div class="layer"><span class="name">subsystems</span><span class="what">SchFS, lwIP, text and graphics, the buffer cache</span></div>
|
||||||
|
<div class="layer seam"><span class="name">device model</span><span class="what">class vtables and bus binding — the driver seam</span></div>
|
||||||
|
<div class="layer"><span class="name">drivers</span><span class="what">xHCI, e1000, virtio-gpu, VBE, IDE, PS/2</span></div>
|
||||||
|
<div class="layer"><span class="name">SchIFT core</span><span class="what">scheduler, paging, traps, IRQ, SMP, DMA</span></div>
|
||||||
|
<div class="layer"><span class="name">boot</span><span class="what">the UEFI loader in <code>boot/uefi</code></span></div>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
<p class="seam-note">
|
||||||
|
<code>uname -s</code> reports <b>SchIFT</b> — the kernel — the way every Unix
|
||||||
|
reports its kernel rather than its distribution.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section id="what" class="reveal">
|
||||||
|
<div class="wrap">
|
||||||
|
<p class="eyebrow">What it has</p>
|
||||||
|
<h2>Built and running, and honest about the rest</h2>
|
||||||
|
<p class="lede">
|
||||||
|
Every card marked <b>runs</b> is in the tree and works today. The tags are
|
||||||
|
not aspirational; the things that are not finished say so.
|
||||||
|
</p>
|
||||||
|
|
||||||
|
<div class="cards">
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag runs">runs</span>
|
||||||
|
<h3><img class="cardmark" src="Assets/uberblock.svg" alt="">SchFS</h3>
|
||||||
|
<p>
|
||||||
|
Copy-on-write B-tree, a 128-slot uberblock ring, extents with refcounts
|
||||||
|
and reflink, CRC32c on metadata, and free space derived from the tree
|
||||||
|
rather than stored beside it — so there is no second structure to
|
||||||
|
disagree with the first. There is nothing to repair after a crash.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag runs">runs</span>
|
||||||
|
<h3>SMP x86-64 kernel</h3>
|
||||||
|
<p>
|
||||||
|
Four-level paging, multiple cores, preemptive scheduling, a calibrated
|
||||||
|
LAPIC timer, real signal delivery and job control. 205 syscalls on
|
||||||
|
Linux numbering.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag runs">runs</span>
|
||||||
|
<h3>Networking</h3>
|
||||||
|
<p>
|
||||||
|
An e1000 driver under lwIP, with sockets for AF_INET, AF_UNIX and
|
||||||
|
AF_NETLINK. DHCP brings the interface up at boot; <code>ping</code>
|
||||||
|
reaches the outside world.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag runs">runs</span>
|
||||||
|
<h3>UEFI boot</h3>
|
||||||
|
<p>
|
||||||
|
A PE/COFF loader built with clang and lld-link that sets up its own page
|
||||||
|
tables and hands the kernel a framebuffer. No BIOS path, no chainloading.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag runs">runs</span>
|
||||||
|
<h3>USB</h3>
|
||||||
|
<p>
|
||||||
|
xHCI, hubs, HID and mass storage — a keyboard and a USB disk that the
|
||||||
|
kernel can mount, through the same device model as everything else.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag runs">runs</span>
|
||||||
|
<h3>A real userland</h3>
|
||||||
|
<p>
|
||||||
|
musl and toybox, both unmodified, plus mksh as <code>/bin/sh</code>.
|
||||||
|
<b>fastfetch</b> builds from upstream source with an empty
|
||||||
|
<code>patches/</code> directory — when it could not detect something, the
|
||||||
|
answer was to give the kernel what it was looking for.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag partial">in progress</span>
|
||||||
|
<h3>Schcom</h3>
|
||||||
|
<p>
|
||||||
|
The compositor that will own the display. v0 runs. The desktop above it
|
||||||
|
is the next large piece of work, and it is deliberately Wayland-shaped.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
<div class="card">
|
||||||
|
<span class="tag planned">designed</span>
|
||||||
|
<h3>SchAPI</h3>
|
||||||
|
<p>
|
||||||
|
The native programming interface — specified, not built, and deliberately
|
||||||
|
so. It should be designed <i>from</i> the compositor's experience rather
|
||||||
|
than before it.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section id="numbers" class="reveal">
|
||||||
|
<div class="wrap">
|
||||||
|
<p class="eyebrow">Numbers</p>
|
||||||
|
<h2>The size of it</h2>
|
||||||
|
<div class="figures">
|
||||||
|
<div class="figure"><b>43,701</b><span>lines in <code>kernel/</code> and <code>include/</code></span></div>
|
||||||
|
<div class="figure"><b>205</b><span>syscalls, Linux numbering</span></div>
|
||||||
|
<div class="figure"><b>128</b><span>uberblock ring slots</span></div>
|
||||||
|
<div class="figure"><b>0</b><span>patches carried against fastfetch</span></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section class="crash reveal">
|
||||||
|
<div class="wrap">
|
||||||
|
<img src="Assets/guru.svg" alt="Guru, the SchOS crash-screen icon">
|
||||||
|
<div>
|
||||||
|
<p class="eyebrow">When it stops</p>
|
||||||
|
<h2>PSOGM</h2>
|
||||||
|
<p>
|
||||||
|
When the kernel panics it does not scroll a stack trace past you. It draws
|
||||||
|
a full-screen report — what failed, where, and the state that mattered —
|
||||||
|
and encodes the whole thing as a QR code so it can leave the machine
|
||||||
|
without being retyped.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
This purple is <code>#4B1D9A</code>, and the theme reserves it for exactly
|
||||||
|
this. Normal states are calm and dark; only failure is loud. It is the one
|
||||||
|
colour in the system that means something, which is why it appears once on
|
||||||
|
this page and nowhere else.
|
||||||
|
</p>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section id="docs" class="reveal">
|
||||||
|
<div class="wrap">
|
||||||
|
<p class="eyebrow">Reading</p>
|
||||||
|
<h2>Where to look</h2>
|
||||||
|
<p class="lede">
|
||||||
|
The documentation is written to outlive the work. Anything finished is
|
||||||
|
described in <code>architecture/</code>; anything intended lives in
|
||||||
|
<code>plan/</code>; and the bugs worth remembering are kept in
|
||||||
|
<code>history/</code>, in full, including the wrong turns.
|
||||||
|
</p>
|
||||||
|
<div class="links">
|
||||||
|
<a class="link-card" href="../architecture/README.md">
|
||||||
|
<b>Architecture</b><span>What the system is, layer by layer</span>
|
||||||
|
</a>
|
||||||
|
<a class="link-card" href="../plan/1.0.md">
|
||||||
|
<b>The 1.0 definition</b><span>What is in, what is out, and why</span>
|
||||||
|
</a>
|
||||||
|
<a class="link-card" href="../history/kernel.md">
|
||||||
|
<b>Kernel history</b><span>The bugs, and what each one taught</span>
|
||||||
|
</a>
|
||||||
|
<a class="link-card" href="../guides/building.md">
|
||||||
|
<b>Building it</b><span>Toolchain, ports, and running under QEMU</span>
|
||||||
|
</a>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
</main>
|
||||||
|
|
||||||
|
<footer>
|
||||||
|
<div class="wrap">
|
||||||
|
<span>SchOS — kernel <b>SchIFT</b>, filesystem <b>SchFS</b>.</span>
|
||||||
|
<span class="mono">Apache-2.0, with the xv6-derived core under MIT.</span>
|
||||||
|
</div>
|
||||||
|
</footer>
|
||||||
|
|
||||||
|
<script src="app.js"></script>
|
||||||
|
</body>
|
||||||
|
</html>
|
||||||
371
docs/Website/style.css
Normal file
371
docs/Website/style.css
Normal file
|
|
@ -0,0 +1,371 @@
|
||||||
|
/* SPDX-License-Identifier: Apache-2.0
|
||||||
|
*
|
||||||
|
* The palette is not chosen here. It is include/theme.h, transcribed, because
|
||||||
|
* a site that describes an operating system should look like the operating
|
||||||
|
* system. That includes the rule theme.h enforces:
|
||||||
|
*
|
||||||
|
* normal states are calm and dark; only failure is loud.
|
||||||
|
*
|
||||||
|
* PSOGM purple (--psogm) therefore appears exactly once on this page, in the
|
||||||
|
* crash-screen section. If it ever appears anywhere else, delete it there.
|
||||||
|
*/
|
||||||
|
|
||||||
|
:root {
|
||||||
|
/* include/theme.h */
|
||||||
|
--bg: #0C0E13; /* SCH_BG */
|
||||||
|
--fg: #E6E8EC; /* SCH_FG */
|
||||||
|
--dim: #707784; /* SCH_DIM */
|
||||||
|
--accent: #7C5CFF; /* SCH_ACCENT */
|
||||||
|
--accent-dim: #2A2440; /* SCH_ACCENT_DIM */
|
||||||
|
--ok: #4ADE80; /* SCH_OK */
|
||||||
|
--warn: #FBBF24; /* SCH_WARN */
|
||||||
|
--psogm: #4B1D9A; /* PSOGM_BG — failure, and nothing else */
|
||||||
|
|
||||||
|
/* Surfaces lifted off the ground, keeping its blue bias rather than
|
||||||
|
sliding toward neutral grey. */
|
||||||
|
--surface: #12151C;
|
||||||
|
--surface-2: #171B24;
|
||||||
|
--line: #212632;
|
||||||
|
|
||||||
|
--sans: "Roboto", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
|
||||||
|
--mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "Cascadia Code",
|
||||||
|
Menlo, Consolas, monospace;
|
||||||
|
|
||||||
|
--measure: 66ch;
|
||||||
|
--gap: clamp(1rem, 2.5vw, 1.75rem);
|
||||||
|
--section: clamp(4rem, 10vw, 7.5rem);
|
||||||
|
}
|
||||||
|
|
||||||
|
*, *::before, *::after { box-sizing: border-box; }
|
||||||
|
|
||||||
|
html { scroll-behavior: smooth; }
|
||||||
|
@media (prefers-reduced-motion: reduce) {
|
||||||
|
html { scroll-behavior: auto; }
|
||||||
|
}
|
||||||
|
|
||||||
|
body {
|
||||||
|
margin: 0;
|
||||||
|
background: var(--bg);
|
||||||
|
color: var(--fg);
|
||||||
|
font-family: var(--sans);
|
||||||
|
font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
|
||||||
|
line-height: 1.65;
|
||||||
|
-webkit-font-smoothing: antialiased;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ---- shared shells ------------------------------------------------- */
|
||||||
|
|
||||||
|
.wrap {
|
||||||
|
width: min(100% - 2.5rem, 68rem);
|
||||||
|
margin-inline: auto;
|
||||||
|
}
|
||||||
|
|
||||||
|
section { padding-block: var(--section); }
|
||||||
|
|
||||||
|
.eyebrow {
|
||||||
|
font-family: var(--mono);
|
||||||
|
font-size: 0.75rem;
|
||||||
|
letter-spacing: 0.14em;
|
||||||
|
text-transform: uppercase;
|
||||||
|
color: var(--accent);
|
||||||
|
margin: 0 0 0.75rem;
|
||||||
|
}
|
||||||
|
|
||||||
|
h1, h2, h3 { text-wrap: balance; line-height: 1.15; margin: 0; }
|
||||||
|
|
||||||
|
h2 {
|
||||||
|
font-size: clamp(1.75rem, 1.3rem + 2vw, 2.75rem);
|
||||||
|
font-weight: 700;
|
||||||
|
letter-spacing: -0.02em;
|
||||||
|
}
|
||||||
|
|
||||||
|
.lede {
|
||||||
|
max-width: var(--measure);
|
||||||
|
color: var(--dim);
|
||||||
|
font-size: clamp(1.05rem, 1rem + 0.35vw, 1.2rem);
|
||||||
|
margin: 1.25rem 0 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
p { max-width: var(--measure); }
|
||||||
|
|
||||||
|
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
|
||||||
|
a:hover { color: var(--fg); }
|
||||||
|
a:focus-visible,
|
||||||
|
button:focus-visible {
|
||||||
|
outline: 2px solid var(--accent);
|
||||||
|
outline-offset: 3px;
|
||||||
|
border-radius: 2px;
|
||||||
|
}
|
||||||
|
|
||||||
|
code, .mono { font-family: var(--mono); font-size: 0.9em; }
|
||||||
|
code { color: var(--fg); background: var(--surface-2); padding: 0.1em 0.4em; border-radius: 3px; }
|
||||||
|
|
||||||
|
/* ---- header -------------------------------------------------------- */
|
||||||
|
|
||||||
|
header.top {
|
||||||
|
position: sticky;
|
||||||
|
top: 0;
|
||||||
|
z-index: 10;
|
||||||
|
background: color-mix(in srgb, var(--bg) 88%, transparent);
|
||||||
|
backdrop-filter: blur(8px);
|
||||||
|
border-bottom: 1px solid var(--line);
|
||||||
|
}
|
||||||
|
.top .wrap {
|
||||||
|
display: flex;
|
||||||
|
align-items: center;
|
||||||
|
gap: 1.5rem;
|
||||||
|
padding-block: 0.85rem;
|
||||||
|
}
|
||||||
|
.brand {
|
||||||
|
display: flex; align-items: center; gap: 0.6rem;
|
||||||
|
font-weight: 700; letter-spacing: -0.01em;
|
||||||
|
color: inherit; text-decoration: none;
|
||||||
|
}
|
||||||
|
.brand img { width: 26px; height: 26px; display: block; }
|
||||||
|
.top nav { margin-left: auto; display: flex; gap: 1.5rem; font-size: 0.9rem; }
|
||||||
|
.top nav a { color: var(--dim); text-decoration: none; }
|
||||||
|
.top nav a:hover { color: var(--fg); }
|
||||||
|
@media (max-width: 46rem) { .top nav { display: none; } }
|
||||||
|
|
||||||
|
/* ---- hero ---------------------------------------------------------- */
|
||||||
|
|
||||||
|
.hero { padding-block: clamp(3.5rem, 9vw, 6.5rem) var(--section); }
|
||||||
|
.hero .wrap {
|
||||||
|
display: grid;
|
||||||
|
grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
|
||||||
|
gap: clamp(2rem, 5vw, 4rem);
|
||||||
|
align-items: center;
|
||||||
|
}
|
||||||
|
@media (max-width: 56rem) {
|
||||||
|
.hero .wrap { grid-template-columns: 1fr; }
|
||||||
|
}
|
||||||
|
|
||||||
|
.hero h1 {
|
||||||
|
font-size: clamp(2.75rem, 1.8rem + 4.2vw, 4.75rem);
|
||||||
|
font-weight: 700;
|
||||||
|
letter-spacing: -0.035em;
|
||||||
|
}
|
||||||
|
.hero h1 .mark {
|
||||||
|
display: inline-block;
|
||||||
|
width: 0.95em;
|
||||||
|
height: 0.95em;
|
||||||
|
vertical-align: -0.08em;
|
||||||
|
margin-right: 0.22em;
|
||||||
|
}
|
||||||
|
.hero p { color: var(--dim); font-size: clamp(1.05rem, 1rem + 0.4vw, 1.25rem); margin-top: 1.25rem; }
|
||||||
|
.hero .cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
|
||||||
|
|
||||||
|
.btn {
|
||||||
|
display: inline-block;
|
||||||
|
padding: 0.65rem 1.25rem;
|
||||||
|
border-radius: 4px;
|
||||||
|
font-size: 0.925rem;
|
||||||
|
font-weight: 500;
|
||||||
|
text-decoration: none;
|
||||||
|
border: 1px solid var(--line);
|
||||||
|
color: var(--fg);
|
||||||
|
background: var(--surface);
|
||||||
|
}
|
||||||
|
.btn:hover { border-color: var(--accent); color: var(--fg); }
|
||||||
|
.btn.primary { background: var(--accent); border-color: var(--accent); color: #0B0714; font-weight: 700; }
|
||||||
|
.btn.primary:hover { background: #8F73FF; border-color: #8F73FF; color: #0B0714; }
|
||||||
|
|
||||||
|
/* ---- console ------------------------------------------------------- */
|
||||||
|
|
||||||
|
.console {
|
||||||
|
background: #090B0F;
|
||||||
|
border: 1px solid var(--line);
|
||||||
|
border-radius: 6px;
|
||||||
|
overflow: hidden;
|
||||||
|
box-shadow: 0 24px 60px -30px #000;
|
||||||
|
}
|
||||||
|
.console-bar {
|
||||||
|
display: flex;
|
||||||
|
align-items: center;
|
||||||
|
gap: 0.5rem;
|
||||||
|
padding: 0.55rem 0.85rem;
|
||||||
|
border-bottom: 1px solid var(--line);
|
||||||
|
background: var(--surface);
|
||||||
|
font-family: var(--mono);
|
||||||
|
font-size: 0.72rem;
|
||||||
|
color: var(--dim);
|
||||||
|
letter-spacing: 0.06em;
|
||||||
|
}
|
||||||
|
.console-bar .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
|
||||||
|
.console-bar .dot.live { background: var(--ok); }
|
||||||
|
.console-bar span { margin-left: auto; }
|
||||||
|
|
||||||
|
.console pre {
|
||||||
|
margin: 0;
|
||||||
|
padding: 1rem 1.1rem 1.4rem;
|
||||||
|
font-family: var(--mono);
|
||||||
|
font-size: clamp(0.72rem, 0.62rem + 0.35vw, 0.82rem);
|
||||||
|
line-height: 1.85;
|
||||||
|
color: var(--fg);
|
||||||
|
overflow-x: auto;
|
||||||
|
min-height: 16.5rem;
|
||||||
|
}
|
||||||
|
.console .t { color: var(--dim); }
|
||||||
|
.console .k { color: var(--accent); }
|
||||||
|
.console .g { color: var(--ok); }
|
||||||
|
.console .cursor {
|
||||||
|
display: inline-block;
|
||||||
|
width: 0.55em;
|
||||||
|
height: 1.05em;
|
||||||
|
background: var(--accent);
|
||||||
|
vertical-align: -0.18em;
|
||||||
|
animation: blink 1.1s step-end infinite;
|
||||||
|
}
|
||||||
|
@keyframes blink { 50% { opacity: 0; } }
|
||||||
|
@media (prefers-reduced-motion: reduce) { .console .cursor { animation: none; } }
|
||||||
|
|
||||||
|
/* ---- origin timeline ----------------------------------------------- */
|
||||||
|
|
||||||
|
.origin-grid {
|
||||||
|
display: grid;
|
||||||
|
grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
|
||||||
|
gap: var(--gap);
|
||||||
|
margin-top: 3rem;
|
||||||
|
}
|
||||||
|
.step {
|
||||||
|
border-left: 2px solid var(--accent-dim);
|
||||||
|
padding-left: 1.1rem;
|
||||||
|
}
|
||||||
|
.step h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.4rem; }
|
||||||
|
.step .when { font-family: var(--mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.08em; text-transform: uppercase; display: block; margin-bottom: 0.5rem; }
|
||||||
|
.step p { color: var(--dim); font-size: 0.925rem; margin: 0; }
|
||||||
|
|
||||||
|
/* ---- the stack ----------------------------------------------------- */
|
||||||
|
|
||||||
|
.stack { display: flex; flex-direction: column; gap: 3px; margin-top: 3rem; }
|
||||||
|
.layer {
|
||||||
|
display: grid;
|
||||||
|
grid-template-columns: 10.5rem 1fr;
|
||||||
|
gap: 1.25rem;
|
||||||
|
align-items: baseline;
|
||||||
|
padding: 0.95rem 1.15rem;
|
||||||
|
background: var(--surface);
|
||||||
|
border: 1px solid transparent;
|
||||||
|
border-radius: 3px;
|
||||||
|
}
|
||||||
|
.layer:hover { border-color: var(--accent-dim); background: var(--surface-2); }
|
||||||
|
.layer .name { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); letter-spacing: 0.04em; }
|
||||||
|
.layer .what { color: var(--dim); font-size: 0.9rem; }
|
||||||
|
.layer.seam { background: var(--accent-dim); }
|
||||||
|
.layer.seam .name { color: var(--fg); }
|
||||||
|
.layer.seam .what { color: #C9BEEC; }
|
||||||
|
@media (max-width: 42rem) {
|
||||||
|
.layer { grid-template-columns: 1fr; gap: 0.3rem; }
|
||||||
|
}
|
||||||
|
.seam-note { margin-top: 1.5rem; color: var(--dim); font-size: 0.9rem; }
|
||||||
|
|
||||||
|
/* ---- features ------------------------------------------------------ */
|
||||||
|
|
||||||
|
.cards {
|
||||||
|
display: grid;
|
||||||
|
grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
|
||||||
|
gap: var(--gap);
|
||||||
|
margin-top: 3rem;
|
||||||
|
}
|
||||||
|
.card {
|
||||||
|
background: var(--surface);
|
||||||
|
border: 1px solid var(--line);
|
||||||
|
border-radius: 5px;
|
||||||
|
padding: 1.4rem;
|
||||||
|
display: flex;
|
||||||
|
flex-direction: column;
|
||||||
|
gap: 0.6rem;
|
||||||
|
}
|
||||||
|
.card h3 { font-size: 1.05rem; font-weight: 700; }
|
||||||
|
.card p { color: var(--dim); font-size: 0.925rem; margin: 0; max-width: none; }
|
||||||
|
.card .tag {
|
||||||
|
align-self: flex-start;
|
||||||
|
font-family: var(--mono);
|
||||||
|
font-size: 0.68rem;
|
||||||
|
letter-spacing: 0.1em;
|
||||||
|
text-transform: uppercase;
|
||||||
|
padding: 0.2rem 0.5rem;
|
||||||
|
border-radius: 3px;
|
||||||
|
border: 1px solid var(--line);
|
||||||
|
color: var(--dim);
|
||||||
|
}
|
||||||
|
.card .tag.runs { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 35%, transparent); }
|
||||||
|
.card .tag.partial{ color: var(--warn); border-color: color-mix(in srgb, var(--warn) 35%, transparent); }
|
||||||
|
.card .tag.planned{ color: var(--dim); }
|
||||||
|
|
||||||
|
/* ---- numbers ------------------------------------------------------- */
|
||||||
|
|
||||||
|
.figures {
|
||||||
|
display: grid;
|
||||||
|
grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
|
||||||
|
gap: var(--gap);
|
||||||
|
margin-top: 3rem;
|
||||||
|
}
|
||||||
|
.figure { border-top: 1px solid var(--line); padding-top: 1rem; }
|
||||||
|
.figure b {
|
||||||
|
display: block;
|
||||||
|
font-family: var(--mono);
|
||||||
|
font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.25rem);
|
||||||
|
font-weight: 700;
|
||||||
|
font-variant-numeric: tabular-nums;
|
||||||
|
letter-spacing: -0.02em;
|
||||||
|
}
|
||||||
|
.figure span { color: var(--dim); font-size: 0.85rem; }
|
||||||
|
|
||||||
|
/* ---- the crash screen: the one loud thing --------------------------- */
|
||||||
|
|
||||||
|
.crash { background: var(--psogm); color: #fff; }
|
||||||
|
.crash .wrap {
|
||||||
|
display: grid;
|
||||||
|
grid-template-columns: 8rem minmax(0, 1fr);
|
||||||
|
gap: clamp(1.5rem, 4vw, 3rem);
|
||||||
|
align-items: start;
|
||||||
|
}
|
||||||
|
@media (max-width: 44rem) { .crash .wrap { grid-template-columns: 1fr; } }
|
||||||
|
.crash img { width: 100%; max-width: 8rem; height: auto; }
|
||||||
|
.crash .eyebrow { color: #C3AEEC; }
|
||||||
|
.crash h2 { color: #fff; }
|
||||||
|
.crash p { color: #DBCEF5; }
|
||||||
|
.crash code { background: rgba(0, 0, 0, 0.28); color: #fff; }
|
||||||
|
|
||||||
|
/* ---- closing links -------------------------------------------------- */
|
||||||
|
|
||||||
|
.links { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: var(--gap); margin-top: 2.5rem; }
|
||||||
|
.link-card {
|
||||||
|
display: block;
|
||||||
|
padding: 1.2rem;
|
||||||
|
border: 1px solid var(--line);
|
||||||
|
border-radius: 5px;
|
||||||
|
text-decoration: none;
|
||||||
|
color: var(--fg);
|
||||||
|
background: var(--surface);
|
||||||
|
}
|
||||||
|
.link-card:hover { border-color: var(--accent); color: var(--fg); }
|
||||||
|
.link-card b { display: block; margin-bottom: 0.3rem; }
|
||||||
|
.link-card span { color: var(--dim); font-size: 0.875rem; }
|
||||||
|
|
||||||
|
footer {
|
||||||
|
border-top: 1px solid var(--line);
|
||||||
|
padding-block: 2.5rem 3.5rem;
|
||||||
|
color: var(--dim);
|
||||||
|
font-size: 0.85rem;
|
||||||
|
}
|
||||||
|
footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: center; }
|
||||||
|
footer .mono { font-size: 0.78rem; }
|
||||||
|
|
||||||
|
/* ---- reveal on scroll ---------------------------------------------- */
|
||||||
|
|
||||||
|
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
|
||||||
|
.reveal.in { opacity: 1; transform: none; }
|
||||||
|
@media (prefers-reduced-motion: reduce) {
|
||||||
|
.reveal { opacity: 1; transform: none; transition: none; }
|
||||||
|
}
|
||||||
|
|
||||||
|
/* The SchFS mark, set beside its own card heading. Baseline-aligned rather
|
||||||
|
than centred: it sits next to a word, so it follows the word. */
|
||||||
|
.card h3 .cardmark {
|
||||||
|
width: 1.15em;
|
||||||
|
height: 1.15em;
|
||||||
|
vertical-align: -0.22em;
|
||||||
|
margin-right: 0.4em;
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue