df1394eaa3
SCFF, the SchOS Compressed File Format (include/fs/scff.h), is a block image cut into 128 KB chunks, each its own zstd frame, behind an index. tools/mkscff writes it from fs-ram.img on every core (-19, 11 s) and checks each chunk decompresses to itself. The kernel carries the .scff as its ramdisk and unpacks a chunk the first time a block in it is read; zero blocks share one page. The kernel and the ISO are the compressed size, and the root costs memory only for what is touched. See docs/architecture/scff.md. zstd 1.5.7 comes from ports/zstd like uACPI: the decoder is compiled into the kernel at -O2, with a static context and a 64 KB stack of its own, and mkscff builds the whole library from the same release. world now has xorg-server, the fbdev and evdev drivers, xinit, Window Maker, xterm and DejaVu, and /root/.xinitrc runs wmaker. That root is 358 MB, 102 MB as SCFF. The ISO no longer carries the root a third time as an ISO 9660 tree, which nothing read. schos.iso: 1389 MB -> 318 MB. El Torito keeps its own copy of the EFI image, the layout real machines have booted. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
11 lines
522 B
C
11 lines
522 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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// zstd's allocator hooks. The kernel decoder is a static context in a fixed
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// workspace (kernel/scff/scff.c), so nothing allocates: these exist only for
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// code paths that are compiled in and never taken.
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#ifndef SCFF_COMPAT_STDLIB_H
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#define SCFF_COMPAT_STDLIB_H
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#include <stddef.h>
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static inline void *malloc(size_t n) { (void)n; return 0; }
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static inline void *calloc(size_t n, size_t s) { (void)n; (void)s; return 0; }
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static inline void free(void *p) { (void)p; }
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#endif
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