nexoniarz/SchOS
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Rename Schunix to SchOS; the kernel becomes SchIFT

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Removes the "-unix" element and with it any trademark exposure to The
Open Group.

The split follows the ecosystem layout: SchOS is the system, and the
kernel has its own name. Kernel-identity strings are the only places
that take SchIFT -- uname(2) sysname, /proc/version, and the two licence
sentences that say "kernel" outright. That is what every Unix does here:
`uname -s` on Linux reports the kernel, not the distribution. Everything
a user reads as the product -- panic screen, boot menu, error prefixes,
docs, LICENSE, NOTICE -- is SchOS.

schunix.img is schos.img, the logo assets and the musl TLS patch are
renamed, and __SCHUNIX__ is __SCHOS__ (the define and the patch that
consumes it moved together).

Two things the rename broke, both found by the bootcheck suite:

  - shmtest wrote "SCHUNIX-MMAP-OK" with a hardcoded length of 15 and
    compared it back by hand-counted offsets (m[3]=='U', m[14]=='K').
    The shorter marker left the write running two bytes past the literal
    and the compare reading past the data, failing a file-backed mmap
    that was working correctly. Now written and compared through one
    constant with sizeof.
  - bootcheck asserted a 31-byte file after appending to
    "hello-from-schunix"; the shorter string makes it 29.

Both are the same mistake: a string literal whose length is written out
somewhere else. Full suite green -- base, Tty, Ps, Sock, Fb, Usb, Evdev.
This commit is contained in:
Nexoniarz 2026-08-09 14:09:59 +02:00
commit e04ca28812
83 changed files with 520 additions and 601 deletions
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6
kernel/core/panic.c
View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: Apache-2.0
//
// PSOGM — the Schunix crash screen.
// PSOGM — the SchOS crash screen.
//
// The name is a nod to the Amiga's "Guru Meditation", but nothing else about
// this is a nod to 1985. Three things it is built around:
@ -439,7 +439,7 @@ paint(char *reason, addr_t *pcs, int npcs)
// Left-aligned, not centred. Centred text reads as a poster; this is a
// report, and a report is read down the left edge.
vga_text_at(left, y, "Schunix ran into a problem and needs to restart.",
vga_text_at(left, y, "SchOS ran into a problem and needs to restart.",
PSOGM_FG);
y += ch + ch / 2;
vga_text_at(left, y, "Nothing on your disks was touched by this.",
@ -492,7 +492,7 @@ report_serial(char *reason, addr_t *pcs, int npcs)
{
cprintf("\n");
cprintf(" :(\n\n");
cprintf(" Schunix ran into a problem and needs to restart.\n");
cprintf(" SchOS ran into a problem and needs to restart.\n");
cprintf(" PSOGM -- Purple Screen of Guru Meditation\n\n");
for (int i = 0; i < nfields; i++) {