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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8
tools/loc.ps1
View file

@ -1,4 +1,4 @@
# How much of Schunix is actually Schunix.
# How much of SchOS is actually SchOS.
#
# `wc -l` over the whole tree answers a question nobody asked: it counts musl,
# toybox, mksh and a NetBSD checkout, which between them are
@ -136,13 +136,13 @@ $fmt = @(
)
Write-Host ''
Write-Host ' Schunix — first-party source' -ForegroundColor Cyan
Write-Host ' SchOS — first-party source' -ForegroundColor Cyan
Write-Host ''
Write-Host (($results | Where-Object { $_.Files -gt 0 } | Sort-Object Lines -Descending | Format-Table $fmt -AutoSize | Out-String))
# Two totals, because they answer different questions and conflating them
# flatters the number. "The OS" is what boots and runs on the machine; docs,
# host-side tools and the projects/ stubs are first-party but are not Schunix
# host-side tools and the projects/ stubs are first-party but are not SchOS
# running on hardware. Linux 0.01's 10,239 lines were kernel, headers and boot
# -- no documentation and no build tooling -- so only the first total is a fair
# comparison.
@ -182,7 +182,7 @@ Write-Host ''
# measure -- every line of every file in the tarball, comments included.
$lin = 10239
Write-Host (' For scale: Linux 0.01 was {0:N0} lines (kernel, headers, boot -- the' -f $lin) -ForegroundColor DarkGray
Write-Host (' same things counted above as THE OS ITSELF). Schunix is {0:N1}x that.' -f ($osT / $lin)) -ForegroundColor DarkGray
Write-Host (' same things counted above as THE OS ITSELF). SchOS is {0:N1}x that.' -f ($osT / $lin)) -ForegroundColor DarkGray
Write-Host ''
if ($PerFile) {