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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2
boot/stage2.S
View file

@ -100,7 +100,7 @@ print16:
ret
bootmsg:
.asciz "Schunix booting...\r\n"
.asciz "SchOS booting...\r\n"
.code32
start32:

12
boot/stage2main.c
View file

@ -469,8 +469,8 @@ static int
boot_menu(void)
{
const char *items[] = {
"Boot Schunix",
"Boot Schunix (verbose)",
"Boot SchOS",
"Boot SchOS (verbose)",
"Reboot to firmware setup",
};
int nitems = 3;
@ -481,7 +481,7 @@ boot_menu(void)
for (;;) {
fill_rect(0, 0, g_width, g_height, SCH_BG);
draw_centered(60, "Schunix Boot Manager", SCH_ACCENT);
draw_centered(60, "SchOS Boot Manager", SCH_ACCENT);
draw_memory_line(84, SCH_DIM);
for (int i = 0; i < nitems; i++) {
@ -547,7 +547,7 @@ splash(void)
// The product, not the loader.
//
// This used to read "Schunix Boot Manager / version 1.0 / Memory: 1023 MB /
// This used to read "SchOS Boot Manager / version 1.0 / Memory: 1023 MB /
// Press F8 for boot menu...", centred, in gold on purple. Every part of that
// is something a system shows its developer rather than its user: the name
// of the component doing the work, its version, and a memory figure nobody
@ -605,7 +605,7 @@ stage2main(void)
if (g_have_fb) {
fill_rect(0, 0, g_width, g_height, SCH_BG);
draw_string((g_width - 7 * 8) / 2, g_height / 2 - 50, "SCHUNIX", SCH_ACCENT, SCH_BG);
draw_string((g_width - 7 * 8) / 2, g_height / 2 - 50, "SCHOS", SCH_ACCENT, SCH_BG);
}
// Booted from a disc we then could not read. Falling through would send
@ -646,7 +646,7 @@ stage2main(void)
stosb((void*) hdr->load_end_addr, 0, hdr->bss_end_addr - hdr->load_end_addr);
if (g_have_fb)
progress_label("Starting Schunix...");
progress_label("Starting SchOS...");
// Jump to kernel entry. NOT a normal C call: kernel/arch/x86_64/
// entry.S's mboot_entry reads its "argument" (the framebuffer