Add early preseed

Speeds up development cycle, allows for the pre-kaem stages to be
extracted as a tarball

rootfs.py

@@ -69,6 +69,8 @@ def main():
                         action="store_true")
     parser.add_argument("-r", "--repo",
                         help="Path to prebuilt binary packages.", nargs=None)
+    parser.add_argument("--early-preseed",
+                        help="Skip early stages of live-bootstrap.", nargs=None)
 
     # QEMU arguments
     parser.add_argument("-q", "--qemu", help="Use QEMU",
@@ -126,7 +128,8 @@ def main():
                     tmpdir=args.tmpdir, external_sources=args.external_sources)
     system_b = SysB(arch=args.arch, preserve_tmp=args.preserve)
     system_a = SysA(arch=args.arch, preserve_tmp=args.preserve,
-                    tmpdir=args.tmpdir, external_sources=args.external_sources,
+                    early_preseed=args.early_preseed, tmpdir=args.tmpdir,
+                    external_sources=args.external_sources,
                     sysb_dir=system_b.sys_dir, sysc_dir=system_c.sys_dir)
 
     if args.tmpdir is not None:

sysa.py

@@ -9,6 +9,7 @@
 import os
 from distutils.dir_util import copy_tree
 import shutil
+import tarfile
 
 from lib.sysgeneral import SysGeneral, stage0_arch_map
 
@@ -18,10 +19,11 @@ class SysA(SysGeneral):
     Class responsible for preparing sources for System A.
     """
     # pylint: disable=too-many-instance-attributes,too-many-arguments
-    def __init__(self, arch, preserve_tmp, external_sources, tmpdir, sysb_dir, sysc_dir):
+    def __init__(self, arch, preserve_tmp, external_sources, early_preseed, tmpdir, sysb_dir, sysc_dir):
         self.git_dir = os.path.dirname(os.path.join(__file__))
         self.arch = arch
         self.preserve_tmp = preserve_tmp
+        self.early_preseed = early_preseed
 
         self.sys_dir = os.path.join(self.git_dir, 'sysa')
         if tmpdir is None:
@@ -46,7 +48,15 @@ class SysA(SysGeneral):
         else:
             os.mkdir(self.tmp_dir)
 
-        self.stage0_posix()
+        if self.early_preseed:
+            # Extract tar containing preseed
+            with tarfile.open(self.early_preseed, "r") as seed:
+                seed.extractall(self.tmp_dir)
+            shutil.copy2(os.path.join(self.sys_dir, 'base-preseeded.kaem'),
+                         os.path.join(self.tmp_dir, 'kaem.x86'))
+        else:
+            self.stage0_posix()
+
         self.sysa()
 
         # sysb must be added to sysa as it is another initramfs stage

sysa/after-preseeded.kaem

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+# SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>
+# SPDX-FileCopyrightText: 2020-2022 fosslinux <fosslinux@aussies.space>
+# SPDX-FileCopyrightText: 2022 Dor Askayo <dor.askayo@gmail.com>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+set -ex
+
+# Set commonly used variables
+sysa=/sysa
+distfiles=/sysa/distfiles
+prefix=/usr
+bindir=${prefix}/bin
+libdir=${libdir}/mes
+incdir=${prefix}/include
+srcdir=${prefix}/src
+TMPDIR=/tmp # tmpdir is needed for patch to work
+PATH=${bindir}
+
+cd ${sysa}
+
+exec bash run.sh

sysa/base-preseeded.kaem

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+/usr/bin/kaem -f /sysa/after-preseeded.kaem