Remove the notion of "sys*"

- This idea originates from very early in the project and was, at the
  time, a very easy way to categorise things.
- Now, it doesn't really make much sense - it is fairly arbitary, often
  occuring when there is a change in kernel, but not from builder-hex0
  to fiwix, and sysb is in reality completely unnecessary.
- In short, the sys* stuff is a bit of a mess that makes the project
  more difficult to understand.
- This puts everything down into one folder and has a manifest file that
  is used to generate the build scripts on the fly rather than using
  coded scripts.
- This is created in the "seed" stage.

stage0-posix -- (calls) --> seed -- (generates) --> main steps

Alongside this change there are a variety of other smaller fixups to the
general structure of the live-bootstrap rootfs.

- Creating a rootfs has become much simpler and is defined as code in
  go.sh. The new structure, for an about-to-be booted system, is

/
-- /steps (direct copy of steps/)
-- /distfiles (direct copy of distfiles/)
-- all files from seed/*
-- all files from seed/stage0-posix/*

- There is no longer such a thing as /usr/include/musl, this didn't
  really make any sense, as musl is the final libc used. Rather, to
  separate musl and mes, we have /usr/include/mes, which is much easier
  to work with.
- This also makes mes easier to blow away later.
- A few things that weren't properly in packages have been changed;
  checksum-transcriber, simple-patch, kexec-fiwix have all been given
  fully qualified package names.
- Highly breaking change, scripts now exist in their package directory
  but NOT WITH THE packagename.sh. Rather, they use pass1.sh, pass2.sh,
  etc. This avoids manual definition of passes.
  - Ditto with patches; default directory is patches, but then any patch
    series specific to a pass are named patches-passX.

steps/tar-1.12/files/getdate_stub.c

@@ -0,0 +1,12 @@
+/*
+ * SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "getdate.h"
+
+time_t get_date (const char *p, const time_t *now)
+{
+    return 0;
+}

steps/tar-1.12/files/stat_override.c

@@ -0,0 +1,29 @@
+/*
+ * SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+ * SPDX-FileCopyrightText: 2022 Andrius Štikonas <andrius@stikonas.eu>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <sys/stat.h>
+#include <linux/syscall.h>
+#include <linux/x86/syscall.h>
+
+int _lstat(const char *path, struct stat *buf) {
+	int rc = lstat(path, buf);
+	if (rc == 0) {
+		buf->st_atime = 0;
+		buf->st_mtime = 0;
+	}
+	return rc;
+}
+
+/* stat is deliberately hacked to be lstat.
+   In src/system.h tar already defines lstat to be stat
+   since S_ISLNK is not defined in mes C library
+   Hence, we can't use something like #define lstat(a,b) _lstat(a,b)
+   to have separate stat and lstat functions.
+   Thus here we break tar with --dereference option but we don't use
+   this option in live-bootstrap.
+ */
+#define stat(a,b) _lstat(a,b)

steps/tar-1.12/mk/main.mk

@@ -0,0 +1,36 @@
+# SPDX-FileCopyrightText: 2022 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+CC = tcc
+AR = tcc -ar
+
+# -DSIZEOF_UNSIGNED_LONG=4 forces use of simulated arithmetic
+# This is to avoid running configure test to determine sizeof(long long)
+CPPFLAGS = -DHAVE_FCNTL_H \
+         -DHAVE_DIRENT_H \
+         -DHAVE_GETCWD_H \
+         -DHAVE_GETCWD \
+         -DSIZEOF_UNSIGNED_LONG=4 \
+         -DVERSION=\"1.12\" \
+         -DPACKAGE=\"tar\"
+
+CFLAGS = -I . -I lib
+LDFLAGS = -L . -ltar -static
+
+.PHONY: all
+
+LIB_SRC = argmatch backupfile error fnmatch ftruncate getdate_stub getopt getopt1 getversion modechange msleep xgetcwd xmalloc xstrdup
+
+LIB_OBJ = $(addprefix lib/, $(addsuffix .o, $(LIB_SRC)))
+
+TAR_SRC = arith buffer compare create delete extract incremen list mangle misc names open3 rtapelib tar update
+TAR_OBJ = $(addprefix src/, $(addsuffix .o, $(TAR_SRC)))
+
+all: tar
+
+libtar.a: $(LIB_OBJ)
+	$(AR) cr $@ $^
+
+tar: libtar.a $(TAR_OBJ)
+	$(CC) $^ $(LDFLAGS) -o $@

steps/tar-1.12/pass1.kaem

@@ -0,0 +1,49 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+# SPDX-FileCopyrightText: 2021-22 fosslinux <fosslinux@aussies.space>
+# SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+set -ex
+
+# Check tarball checksums
+checksum-transcriber sources
+sha256sum -c sources.SHA256SUM
+
+mkdir build src
+cd build
+
+# Extract
+cp ${DISTFILES}/${pkg}.tar.gz ../src/
+gzip -d -f ../src/${pkg}.tar.gz
+untar --file ../src/${pkg}.tar
+rm ../src/${pkg}.tar
+
+cd ${pkg}
+
+# Prepare
+cp ../../mk/main.mk Makefile
+cp ../../files/getdate_stub.c lib/getdate_stub.c
+catm src/create.c.new ../../files/stat_override.c src/create.c
+cp src/create.c.new src/create.c
+
+# Build
+make -f Makefile
+
+# Install
+cp tar ${PREFIX}/bin/tar
+chmod 755 ${PREFIX}/bin/tar
+
+cd ../..
+
+# Checksums
+if match x${UPDATE_CHECKSUMS} xTrue; then
+    sha256sum -o ${pkg}.checksums \
+        /usr/bin/tar
+
+    cp ${pkg}.checksums ${SRCDIR}
+else
+    sha256sum -c ${pkg}.checksums
+fi

steps/tar-1.12/sources

@@ -0,0 +1 @@
+https://mirrors.kernel.org/gnu/tar/tar-1.12.tar.gz c6c37e888b136ccefab903c51149f4b7bd659d69d4aea21245f61053a57aa60a

steps/tar-1.12/tar-1.12.checksums

@@ -0,0 +1 @@
+0b14f1849c2c8dab671399905753e0503f7ba60bfc807b0be13132da6c9814e9  /usr/bin/tar