diff options
Diffstat (limited to 'grs')
| -rw-r--r-- | grs/ISOIt.py | 104 |
1 files changed, 83 insertions, 21 deletions
diff --git a/grs/ISOIt.py b/grs/ISOIt.py index 9b3a920..2a0be81 100644 --- a/grs/ISOIt.py +++ b/grs/ISOIt.py @@ -39,31 +39,93 @@ class ISOIt(HashIt): self.digest_name = '%s.DIGESTS' % self.medium_name + def initramfs(self, isoboot_dir): + """ TODO """ + # Paths to where we'll build busybox and the initramfs. + busybox_root = os.path.join(self.workdir, 'busybox') + busybox_path = os.path.join(busybox_root, 'bin/busybox') + savedconfig_path = os.path.join(busybox_root, 'etc/portage/savedconfig/sys-apps/busybox') + busybox_config = os.path.join(self.libdir, 'scripts/busybox-config') + + # Remove any old busybox build directory and prepare new one. + shutil.rmtree(busybox_root, ignore_errors=True) + os.makedirs(savedconfig_dir, mode=0o755, exist_ok=True) + shutil.copyfile(busybox_config, savedconfig_path) + + # Emerge busybox. + cmd = 'emerge --nodeps -1 busybox' + emerge_env = { 'USE' : '-* savedconfig', 'ROOT' : busybox_root } + Execute(cmd, timeout=600, extra_env=emerge_env, logfile=self.logfile) + + # Remove any old initramfs root and prepare a new one. + initramfs_root = os.path.join(self.workdir, 'initramfs') + shutil.rmtree(initramfs_root, ignore_errors=True) + root_paths = ['bin', 'dev', 'etc', 'mnt/cdrom', 'mnt/squashfs', 'mnt/tmpfs', + 'proc', 'sbin', 'sys', 'tmp', 'usr/bin', 'usr/sbin', 'var', 'var/run'] + for p in root_paths: + d = os.path.join(initramfs_root, p) + os.makdirs(d, mode=0o755, exist_ok=True) + + # Copy the static busybox to the initramfs root. + # TODO: we are assuming a static busybox, so we should check. + shutil.copyfile(busybox_path, os.join.path(initramfs_root, 'bin/busybox')) + cmd = 'chroot %s /bin/busybox --install -s' % initramfs_root + Execute(cmd, timeout=60, logfile=self.logfile) + initscript_path = os.path.join(self.libdir, 'scripts/initramfs-init') + shutil.copy(initscript_path, initramfs_root) + + # TODO: we are assuming a static kernel and so not copying in + # any modules. This is where we should copy in modules. + + # cpio-gzip the initramfs root to the iso boot dir + initramfs_path = os.path.join(isoboot_dir, 'initramfs') + cwd = os.getcwd() + os.chdir(initramfs_root) + cmd = 'find . | cpio -H newc -o | gzip -9 > %s' % initramfs_path + Execute(cmd, timeout=600, logfile=self.logfile) + os.chdir(cwd) + + def isoit(self, alt_name = None): # Create the ISO with the default name unless an alt_name is given. if alt_name: self.medium_name = '%s-%s%s%s.iso' % (alt_name, self.year, self.month, self.day) self.digest_name = '%s.DIGESTS' % self.medium_name - iso_path = os.path.join(self.workdir, 'iso') - grub_path = os.path.join(iso_path, 'boot/grub') - os.makedirs(grub_path, mode=0o755, exist_ok=False) - # + iso_dir = os.path.join(self.workdir, 'iso') + isoboot_dir = os.path.join(iso_dir, 'boot') + isogrub_dir = os.path.join(isoboot_dir, 'grub') + os.makedirs(isogrub_dir, mode=0o755, exist_ok=False) + # 1. build initramfs image and copy it in - # locate a build script for the initramfs in self.libdir/scripts - # locate a busybox config script in self.libdir/scripts - # locate an init scripts in self.libdir/scripts - # copy in any kernel modules(?) - # find . | cpio -H newc -o | gzip -9 > iso/boot/initramfs.igz - # - # 2. make the squashfs image and copy it into the iso/boot - squashfs_path = os.path.join(iso_path, 'rootfs') + self.initramfs(isoboot_dir) + + # 2. Move the kernel image into the iso/boot directory. + # TODO: we are assuming a static kernel + kernelimage_dir = os.path.join(self.portage_configroot, 'boot') + kernelimage_path = os.path.join(kernelimage_dir, 'kernel') + shutil.copy(kernelimage_path, isoboot_dir) + shutil.rmtree(kernelimage_dir, ignore_errors=True) + + # 3. make the squashfs image and copy it into the iso/boot + squashfs_path = os.path.join(iso_dir, 'rootfs') cmd = 'mksquashfs %s %s -xattrs -comp xz' % (self.portage_configroot, squashfs_path) - Execute(cmd, timeout=None, logfile=self.logfile) - # - # 3. prepare the grub bootloader - # copy in stage2_eltorito into iso/boot/grub - # copy in menu.lst into iso/boot/grub - # - # 4. create the iso image - # mkisofs -R -b boot/grub/stage2_eltorito -no-emul-boot -boot-load-size 4 \ - # -boot-info-table -o medium_pathname.iso iso + Execute(cmd, timeout=600, logfile=self.logfile) + + # 4. Emerge grub:0 to grab stage2_eltorito + grub_root = os.path.join(self.workdir, 'grub') + eltorito_path = os.path.join(grub_root, 'boot/grub/stage2_eltorito') + menulst_path = os.path.join(self.libdir, 'scripts/menu.lst') + cmd = 'emerge --nodeps -1 grub:0' + emerge_env = { 'USE' : '-* savedconfig', 'ROOT' : grub_root } + Execute(cmd, timeout=600, extra_env=emerge_env, logfile=self.logfile) + shutil.copyfile(eltorito_path, isogrub_dir) + shutil.copyfile(menulst_path, isogrub_dir) + + # 5. create the iso image + args = '-R ' # Rock Ridge protocol + args += '-b boot/grub/stage2_eltorito ' # El Torito boot image + args += '-no-emul-boot ' # No disk emulation for El Torito + args += '-boot-load-size 4 ' # 4x512-bit sectors for no-emulation mode + args += '-boot-info-table ' # Create El Torito boot info table + cmd = 'mkisofs %s -o %s %s' % (args, self.medium_pathname, iso_dir) + Execute(cmd, timeout=600, logfile=self.logfile) |