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freeze: one register for everything half-built, and the corners cleared

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The failure this is against is not scope creep. It is abandonment by promotion:
a thing gets built to the point where it works, the next thing becomes more
interesting, and the first is left in a corner -- in the tree, not finished, not
deleted, and not in any list. Enough of those and the tree stops matching its
own documentation.

docs/plan/1.0.md now holds the register, and it is the only place anything
half-built is listed. Four sections, because the kinds are genuinely different:
built and connected to nothing (the text layer, a font from disk, socket
activation, wait_vblank); started and stopped part-way (foundations 2-5, hybrid
H2, Schcom v0, a released PCI device that nothing brings back); named in a "what
it does not do" and still true; and frozen -- scoped, unstarted, not to be
started. The rule is that nothing enters except by being finished or deleted,
and that adding a row requires closing one.

1.0.md already said "two things in flight, never three". It was right and it was
not being followed.

Then the corners themselves, because a register written over a tree full of them
is just a longer list:

  - cmd/init is deleted. Nothing had execed /bin/init since initcode.S changed
    to /bin/schinit; it was built and installed on every image as an unreachable
    fallback, and an unreachable fallback rots rather than saves.
  - projects/schwm/ and projects/schde/ are deleted. Both said "to be deleted"
    in their own first paragraph, which proves only that a directory marked for
    deletion is not deleted by being marked. README-only, no code lost, and the
    arguments each made are moved into wayland.md where they are still true.
  - projects/schcom/schcom and schcom-demo were tracked binaries. Untracked, and
    .gitignore'd.

Three code comments and one document described a boot that has not happened
since 7d44eb7. cons_serial_only starts set, but kmain clears it on its first
lines now, so the splash does not survive the boot and the kernel log is on
screen from the start. That reversal was earned by a Chromebox with no serial
port freezing at boot showing nothing at all, and the comments still argued the
losing side of it.

The site:

  - a download page. One ISO, what it has actually been run on -- one machine,
    under test -- Ventoy and dd, what the first boot looks like step by step,
    and the build if you would rather. The support table names one Chromebox
    rather than listing hardware, because one Chromebox is the entire bare-metal
    record and a list would be fiction.
  - Assets/usb.svg, drawn to the same rule as the other marks: two tones,
    geometry only, the accent spent in one place, and that place is the activity
    light because it is the part that tells you something is happening.
  - Download is in both navs and is the hero's primary action; a closing band
    ends the front page on it.
  - the uberblock-slots and drivers-outside-the-kernel figures are gone. Three
    numbers left, including the fastfetch one, which stays because it is funny.

Two things caught by rendering the pages instead of assuming: .hero p was
beating .filemeta on specificity and the file line was coming out at body size,
and the dd command was one line long enough that the card clipped it at `conv=`
-- a destructive command that can scroll half of itself out of view is a good
way to take somebody's disk. It is two lines now.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VQ7Qx8E1q1M1bbCq8QLHS2
This commit is contained in:
Nexoniarz 2026-09-13 20:28:05 +02:00
commit c0ed23cc56
24 changed files with 586 additions and 257 deletions
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134
cmd/init/main.c
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@ -1,134 +0,0 @@
// SPDX-License-Identifier: Apache-2.0
// SchOS — minimal init (PID 1)
#include "types.h"
#include "user.h"
#include "fcntl.h"
static void
xputs(int fd, const char *s)
{
int n = 0;
while (s[n]) n++;
write(fd, (void *)s, n);
}
int
main(void)
{
if (getpid() != 1)
exit();
// Open console as fd 0; dup to fd 1 (stdout) and fd 2 (stderr).
if (open("console", O_RDWR) < 0) {
mknod("console", 1, 1);
open("console", O_RDWR);
}
dup(0);
dup(0);
// --- /dev ------------------------------------------------------------
// Minor numbers under major 1 follow Linux's mem-major layout where it
// costs nothing (null=2, zero=5, full=7, random=8, urandom=9).
// /dev/hole (was minor 4) is gone: it backed an abandoned experiment and
// nothing has referenced it since.
mkdir("/dev");
mknod("/dev/console", 1, 1);
mknod("/dev/null", 1, 2);
mknod("/dev/keyboard", 1, 3);
mknod("/dev/zero", 1, 5);
mknod("/dev/full", 1, 7);
mknod("/dev/random", 1, 8);
mknod("/dev/urandom", 1, 9);
mknod("/dev/fb0", 2, 0);
mknod("/dev/mouse", 3, 1);
mknod("/dev/tty", 1, 1); // alias for console — must pass TCGETS ioctl
mknod("/dev/ttyS0", 4, 64);
mknod("/dev/stdin", 1, 1);
mknod("/dev/stdout", 1, 1);
mknod("/dev/stderr", 1, 1);
// Raw input events, Linux evdev layout (kernel/dev/input.c). /dev/keyboard
// and /dev/mouse above are the old character-and-position interfaces; these
// are the ones with key releases and button transitions, which is what a
// game or a compositor needs and what neither of the others can express.
mkdir("/dev/input");
mknod("/dev/input/event0", 7, 0); // keyboard
mknod("/dev/input/event1", 7, 1); // mouse
// Raw disks (kernel/dev/disk.c). The minor is the IDE device number, so
// hda is the disk the kernel booted from and hdb the second channel.
//
// Created unconditionally, the same way every other node here is: opening
// one when no drive is there fails with ENXIO, which is a better answer
// than a missing path, and it keeps this list a description of the device
// model rather than of one machine's hardware.
mknod("/dev/hda", 8, 0);
mknod("/dev/hdb", 8, 1);
// --- /proc -----------------------------------------------------------
// Synthesised status files, major 6 (kernel/dev/procfs.c). These are the
// global ones; per-process /proc/<pid>/ directories need synthetic
// directory support in the filesystem, which does not exist yet.
mkdir("/proc");
// /proc is a real filesystem now (kernel/fs/procfs.c), not a handful of
// mknod'd nodes: it has to be, because one directory per process cannot be
// created ahead of time. This is what makes `ps` and `top` work.
//
// The mknod'd global files below still happen, and are simply covered by
// the mount. They stay for now so that a failure here degrades to the old
// behaviour instead of losing /proc entirely.
mount("proc", "/proc", "proc", 0, 0);
mknod("/proc/meminfo", 6, 1);
mknod("/proc/uptime", 6, 2);
mknod("/proc/cpuinfo", 6, 3);
mknod("/proc/version", 6, 4);
mknod("/proc/stat", 6, 5);
mknod("/proc/loadavg", 6, 6);
mknod("/proc/mounts", 6, 7);
mknod("/proc/filesystems", 6, 8);
// SchFS volume summary: label, generation, free space, and the root
// directory. Reachable whether or not the volume is mounted into the
// namespace, which is what makes it useful when a mount has gone wrong.
mknod("/proc/schfs", 6, 9);
// Write 'c' here to crash on purpose. The crash screen is otherwise the
// one part of the system that can only be seen by having a bug.
mknod("/proc/sysrq", 6, 10);
mknod("/proc/pci", 6, 11);
mknod("/proc/interrupts", 6, 12);
mkdir("/sys");
xputs(1, "\nSchOS\n");
xputs(1, "init: ready (pid 1)\n");
for (;;) {
int pid = fork();
if (pid < 0) {
xputs(2, "init: fork failed\n");
sleep(100);
continue;
}
if (pid == 0) {
// exec.c auto-enables Linux ABI for musl binaries (entry >= 0x100000).
// Do NOT call enable_linux_abi() here — it corrupts SchOS syscall
// numbers for the exec/exit calls that follow in this child.
// Standardized naming: the shell is always /bin/sh, regardless of
// which implementation backs it (dash, mksh, etc.) — no ksh/mksh/
// other aliases are looked up here.
static char *argv[] = { "sh", 0 };
exec("/bin/sh", argv);
xputs(2, "init: no shell found; place sh in /bin\n");
exit();
}
// Reap zombies; the loop restarts the shell when it exits.
int wpid;
while ((wpid = wait()) >= 0 && wpid != pid)
;
// Brief pause before restarting so we don't spin on a missing shell.
sleep(100);
}
return 0;
}