Add sysb and sysc scaffolding.

Now that we have the Linux Kernel built, we move to a full-disk (rather
than initramfs) setup in sysc. However, we cannot assume the seed kernel
has support for mounting hard drives. So, first we need to kexec into
sysb, which is used as a jumping off point to create the hard drive for
sysc.

Additionally, since 2.6.16 does not have support for on-demand initramfs
(initramfs must be built into kernel), we will have to rebuild the linux
kernel within sysb without the initramfs.

All of this process is not performed for chroot mode. Instead, we skip
sysb and jump straight to sysc, copying over appropriate data.

The python scripts have been changed slightly. Each sys* inherits
SysGeneral, which contains various functions which are not specific to
any sys* and simplifies those files. rootfs now also handles sysb and
sysc.

bootstrap.cfg also gives an indication whether we are running in a
chroot to avoid attempting to kexec/mount within a chroot.

sysc/coreutils-8.32/checksums

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sysc/coreutils-8.32/coreutils-8.32.sh

@@ -0,0 +1,44 @@
+# SPDX-FileCopyrightText: 2021 Melg Eight <public.melg8@gmail.com>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+regenerate_files() {
+    build-aux/gen-lists-of-programs.sh --autoconf > m4/cu-progs.m4
+    build-aux/gen-lists-of-programs.sh --automake > src/cu-progs.mk
+    build-aux/gen-single-binary.sh src/local.mk > src/single-binary.mk
+    touch ChangeLog
+    cp ../gnulib-d279bc/build-aux/po/Makefile.in.in po/Makefile.in.in
+
+    . ../../import-gnulib.sh
+
+    # Disable generation of man pages due to lack of needed perl 5.8
+    # dependency.
+    cp man/dummy-man man/help2man
+
+    VERSION=$(basename ${BASH_SOURCE[0]} .sh | sed 's/coreutils-//')
+    echo $VERSION > .tarball-version
+
+    # We don't have autopoint from gettext yet.
+    AUTOPOINT=true autoreconf-2.69 -fi
+}
+
+src_prepare() {
+    default
+    regenerate_files
+}
+
+src_configure() {
+    # FORCE_UNSAFE_CONFIGURE disables "you should not run configure as root"
+    # error from configuration system of coreutils.
+    FORCE_UNSAFE_CONFIGURE=1 ./configure CFLAGS="-static" \
+        --prefix="${PREFIX}" \
+        --build=i386-unknown-linux-musl
+}
+
+src_compile() {
+    make PREFIX="${PREFIX}" MAKEINFO="true"
+}
+
+src_install() {
+    make install PREFIX="${PREFIX}" MAKEINFO="true" DESTDIR="${DESTDIR}"
+}

sysc/coreutils-8.32/import-gnulib.sh

@@ -0,0 +1,298 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2021 Melg Eight <public.melg8@gmail.com>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+../gnulib-d279bc/gnulib-tool --import --local-dir=gl \
+    --lib=libcoreutils \
+    --source-base=lib \
+    --m4-base=m4 \
+    --doc-base=doc \
+    --tests-base=gnulib-tests \
+    --aux-dir=build-aux \
+    --with-tests \
+    --makefile-name=gnulib.mk \
+    --no-conditional-dependencies \
+    --no-libtool \
+    --macro-prefix=gl \
+    --avoid=canonicalize-lgpl \
+    --avoid=dummy \
+    acl \
+    alignof \
+    alloca \
+    announce-gen \
+    areadlink-with-size \
+    argmatch \
+    argv-iter \
+    assert \
+    autobuild \
+    backup-rename \
+    backupfile \
+    base32 \
+    base64 \
+    btowc \
+    buffer-lcm \
+    c-strcase \
+    calloc-gnu \
+    canon-host \
+    canonicalize \
+    chmodat \
+    chown \
+    chownat \
+    cl-strtod \
+    cl-strtold \
+    cloexec \
+    closein \
+    closeout \
+    config-h \
+    configmake \
+    crypto/md5 \
+    crypto/sha1 \
+    crypto/sha256 \
+    crypto/sha512 \
+    cycle-check \
+    d-ino \
+    d-type \
+    di-set \
+    diacrit \
+    dirfd \
+    dirname \
+    do-release-commit-and-tag \
+    dtoastr \
+    dup2 \
+    environ \
+    error \
+    euidaccess \
+    exclude \
+    exitfail \
+    explicit_bzero \
+    faccessat \
+    fadvise \
+    fchdir \
+    fclose \
+    fcntl \
+    fcntl-safer \
+    fd-reopen \
+    fdatasync \
+    fdl \
+    fdopen \
+    fdutimensat \
+    file-has-acl \
+    file-type \
+    fileblocks \
+    filemode \
+    filenamecat \
+    filevercmp \
+    flexmember \
+    fnmatch-gnu \
+    fopen-safer \
+    fprintftime \
+    freopen \
+    freopen-safer \
+    fseeko \
+    fstatat \
+    fsusage \
+    fsync \
+    ftoastr \
+    ftruncate \
+    fts \
+    full-read \
+    full-write \
+    getgroups \
+    gethrxtime \
+    getline \
+    getloadavg \
+    getlogin \
+    getndelim2 \
+    getopt-gnu \
+    getpagesize \
+    getpass-gnu \
+    gettext-h \
+    gettime \
+    gettimeofday \
+    getugroups \
+    getusershell \
+    git-version-gen \
+    gitlog-to-changelog \
+    gnu-make \
+    gnu-web-doc-update \
+    gnumakefile \
+    gnupload \
+    group-member \
+    hard-locale \
+    hash \
+    hash-pjw \
+    heap \
+    host-os \
+    human \
+    idcache \
+    ignore-value \
+    inttostr \
+    inttypes \
+    isapipe \
+    isatty \
+    isblank \
+    largefile \
+    lchmod \
+    lchown \
+    ldtoastr \
+    lib-ignore \
+    linebuffer \
+    link \
+    link-follow \
+    linkat \
+    long-options \
+    lstat \
+    maintainer-makefile \
+    malloc-gnu \
+    manywarnings \
+    mbrlen \
+    mbrtowc \
+    mbsalign \
+    mbschr \
+    mbslen \
+    mbswidth \
+    memcasecmp \
+    memchr \
+    memcmp2 \
+    mempcpy \
+    memrchr \
+    mgetgroups \
+    minmax \
+    mkancesdirs \
+    mkdir \
+    mkdir-p \
+    mkfifo \
+    mknod \
+    mkostemp \
+    mkstemp \
+    mktime \
+    modechange \
+    mountlist \
+    mpsort \
+    netinet_in \
+    non-recursive-gnulib-prefix-hack \
+    nproc \
+    nstrftime \
+    obstack \
+    open \
+    openat-safer \
+    parse-datetime \
+    pathmax \
+    perl \
+    physmem \
+    pipe-posix \
+    pipe2 \
+    posix-shell \
+    posixtm \
+    posixver \
+    priv-set \
+    progname \
+    pthread-cond \
+    pthread-mutex \
+    pthread-thread \
+    pthread_sigmask \
+    putenv \
+    quote \
+    quotearg \
+    randint \
+    randperm \
+    read-file \
+    readlink \
+    readtokens \
+    readtokens0 \
+    readutmp \
+    realloc-gnu \
+    regex \
+    remove \
+    rename \
+    renameat \
+    renameatu \
+    rmdir \
+    root-dev-ino \
+    rpmatch \
+    safe-read \
+    same \
+    save-cwd \
+    savedir \
+    savewd \
+    select \
+    selinux-at \
+    setenv \
+    settime \
+    sig2str \
+    sigaction \
+    smack \
+    ssize_t \
+    stat-macros \
+    stat-size \
+    stat-time \
+    statat \
+    stdbool \
+    stdlib-safer \
+    stpcpy \
+    stpncpy \
+    strdup-posix \
+    strncat \
+    strnumcmp \
+    strsignal \
+    strtoimax \
+    strtoumax \
+    symlinkat \
+    sys_ioctl \
+    sys_resource \
+    sys_stat \
+    sys_wait \
+    tempname \
+    termios \
+    time_rz \
+    timer-time \
+    timespec \
+    tzset \
+    uname \
+    unistd-safer \
+    unlink-busy \
+    unlinkat \
+    unlinkdir \
+    unlocked-io \
+    unsetenv \
+    update-copyright \
+    uptime \
+    useless-if-before-free \
+    userspec \
+    utimecmp \
+    utimens \
+    vasprintf-posix \
+    vc-list-files \
+    verify \
+    verror \
+    version-etc-fsf \
+    wchar-single \
+    wcswidth \
+    wcwidth \
+    winsz-ioctl \
+    winsz-termios \
+    write-any-file \
+    xalloc \
+    xbinary-io \
+    xdectoint \
+    xfts \
+    xgetcwd \
+    xgetgroups \
+    xgethostname \
+    xmemcoll \
+    xnanosleep \
+    xprintf \
+    xprintf-posix \
+    xreadlink \
+    xstrtod \
+    xstrtoimax \
+    xstrtol \
+    xstrtol-error \
+    xstrtold \
+    xstrtoumax \
+    year2038 \
+    yesno
+
+../gnulib-d279bc/build-aux/prefix-gnulib-mk --lib-name=libcoreutils lib/gnulib.mk

sysc/coreutils-8.32/patches/force_to_use_nanosleep.patch

@@ -0,0 +1,38 @@
+SPDX-FileCopyrightText: 2021 Melg Eight <public.melg8@gmail.com>
+
+SPDX-License-Identifier: GPL-3.0-or-later
+
+Replace test for support of correct values produced by nanosleep.
+We always assume that kernel doesn't have correct implementation and
+instead use function from gnulib with fix. That fixes reproducibility
+problem across different kernels.
+
+--- ../gnulib-d279bc/m4/nanosleep.m4
++++ ../gnulib-d279bc/m4/nanosleep.m4
+@@ -85,23 +85,9 @@ AC_DEFUN([gl_FUNC_NANOSLEEP],
+             ts_sleep.tv_nsec = 1;
+             #if HAVE_DECL_ALARM
+             {
+-              static struct sigaction act;
+-              act.sa_handler = check_for_SIGALRM;
+-              sigemptyset (&act.sa_mask);
+-              sigaction (SIGALRM, &act, NULL);
+-              alarm (1);
+-              if (nanosleep (&ts_sleep, NULL) != 0)
+-                return 3;
+-              /* Test for a minor problem: the handling of large arguments.  */
+-              ts_sleep.tv_sec = TYPE_MAXIMUM (time_t);
+-              ts_sleep.tv_nsec = 999999999;
+-              alarm (1);
+-              if (nanosleep (&ts_sleep, &ts_remaining) != -1)
+-                return 4;
+-              if (errno != EINTR)
+-                return 5;
+-              if (ts_remaining.tv_sec <= TYPE_MAXIMUM (time_t) - 10)
+-                return 6;
++              /* Force to use HAVE_BUG_BIG_NANOSLEEP 1 across kernels even
++                 if it correctly handles big nanosleeps. */
++              return 6;
+             }
+             #else /* A simpler test for native Windows.  */
+             if (nanosleep (&ts_sleep, &ts_remaining) < 0)

sysc/coreutils-8.32/patches/gperf_dependency.patch

@@ -0,0 +1,50 @@
+SPDX-FileCopyrightText: 2021 Melg Eight <public.melg8@gmail.com>
+SPDX-License-Identifier: GPL-3.0-or-later
+
+Remove dependency on gperf. This drops support for outputting unicode
+characters. We do that, because inclusion of unicodeio.h and propername.h
+from gnulib brings dependencies on gperf generated files. We don't have
+gperf at this stage so we can't regenerate them.
+
+--- ./src/printf.c
++++ ./src/printf.c
+@@ -59,7 +59,6 @@
+ #include "die.h"
+ #include "error.h"
+ #include "quote.h"
+-#include "unicodeio.h"
+ #include "xprintf.h"
+ 
+ /* The official name of this program (e.g., no 'g' prefix).  */
+@@ -292,8 +291,12 @@ print_esc (const char *escstart, bool octal_0)
+           || (uni_value >= 0xd800 && uni_value <= 0xdfff))
+         die (EXIT_FAILURE, 0, _("invalid universal character name \\%c%0*x"),
+              esc_char, (esc_char == 'u' ? 4 : 8), uni_value);
+-
+-      print_unicode_char (stdout, uni_value, 0);
++       putchar ('\\');                                                           
++       if (*p)                                                                   
++         {                                                                       
++           putchar (*p);                                                         
++           p++;                                                                  
++         }  
+     }
+   else
+     {
+--- ./src/system.h
++++ ./src/system.h
+@@ -361,13 +361,13 @@ enum
+ #include "version-etc.h"
+ #undef emit_bug_reporting_address
+ 
+-#include "propername.h"
+ /* Define away proper_name (leaving proper_name_utf8, which affects far
+    fewer programs), since it's not worth the cost of adding ~17KB to
+    the x86_64 text size of every single program.  This avoids a 40%
+    (almost ~2MB) increase in the on-disk space utilization for the set
+    of the 100 binaries. */
+ #define proper_name(x) (x)
++#define proper_name_utf8(x, y) (x, y)
+ 
+ #include "progname.h"
+ 

sysc/coreutils-8.32/patches/remove_gettext.patch

@@ -0,0 +1,31 @@
+SPDX-FileCopyrightText: 2021 Melg Eight <public.melg8@gmail.com>
+
+SPDX-License-Identifier: GPL-3.0-or-later
+
+Remove dependency on gettext, because we don't have it at this stage
+of the build.
+
+--- ./configure.ac
++++ ./configure.ac
+@@ -624,8 +624,8 @@ AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
+ 
+ # As long as "grep 'PRI[diouxX]' po/*.pot" reports matches in
+ # translatable strings, we must use need-formatstring-macros here.
+-AM_GNU_GETTEXT([external], [need-formatstring-macros])
+-AM_GNU_GETTEXT_VERSION([0.19.2])
++# AM_GNU_GETTEXT([external], [need-formatstring-macros])
++# AM_GNU_GETTEXT_VERSION([0.19.2])
+ 
+ # For a test of uniq: it uses the $LOCALE_FR envvar.
+ gt_LOCALE_FR
+--- ./Makefile.am
++++ ./Makefile.am
+@@ -17,7 +17,7 @@
+ 
+ ALL_RECURSIVE_TARGETS =
+ 
+-SUBDIRS = po . gnulib-tests
++SUBDIRS = . gnulib-tests
+ 
+ EXTRA_DIST =				\
+   .mailmap				\