diff options
| -rw-r--r-- | grs/Interpret.py | 10 | ||||
| -rw-r--r-- | grs/Netboot.py | 99 |
2 files changed, 109 insertions, 0 deletions
diff --git a/grs/Interpret.py b/grs/Interpret.py index 523cdda..7bdfa01 100644 --- a/grs/Interpret.py +++ b/grs/Interpret.py @@ -134,6 +134,7 @@ class Interpret(Daemon): _ke = Kernel(libdir, portage_configroot, kernelroot, package, logfile) _bi = TarIt(name, portage_configroot, logfile) _io = ISOIt(name, libdir, tmpdir, portage_configroot, logfile) + _nb - Netboot(name, libdir, tmpdir, portage_configroot, kernelroot, logfile) # Just in case /var/tmp/grs doesn't already exist. os.makedirs(tmpdir, mode=0o755, exist_ok=True) @@ -242,11 +243,20 @@ class Interpret(Daemon): else: semantic_action(_line, objs, 0, _io.isoit) medium_type = 'isoit' + elif verb == 'netbootit': + # 'netbootit' can either be just a verb, or a 'verb obj' pair. + if len(objs): + semantic_action(_line, objs, 1, _nb.netbootit, objs[0]) + else: + semantic_action(_line, objs, 0, _nb.netbootit) + medium_type = 'netbootit' elif verb == 'hashit': if medium_type == 'tarit': semantic_action(_line, objs, 0, _bi.hashit) elif medium_type == 'isoit': semantic_action(_line, objs, 0, _io.hashit) + elif medium_type == 'netbootit': + semantic_action(_line, objs, 0, _nb.hashit) else: raise Exception('Unknown medium to hash.') else: diff --git a/grs/Netboot.py b/grs/Netboot.py new file mode 100644 index 0000000..11a78d2 --- /dev/null +++ b/grs/Netboot.py @@ -0,0 +1,99 @@ +#!/usr/bin/env python +# +# Netboot.py: this file is part of the GRS suite +# Copyright (C) 2017 Anthony G. Basile +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +import os +import shutil +from datetime import datetime +from grs.Constants import CONST +from grs.Execute import Execute +from grs.HashIt import HashIt + +class Netboot(HashIt): + """ Create a Netboot image of the system. """ + + def __init__( + self, + name, + libdir=CONST.LIBDIR, + tmpdir=CONST.TMPDIR, + portage_configroot=CONST.PORTAGE_CONFIGROOT, + kernelroot=CONST.KERNELROOT, + logfile=CONST.LOGFILE + ): + self.libdir = libdir + self.tmpdir = tmpdir + self.portage_configroot = portage_configroot + self.logfile = logfile + # Prepare a year, month and day for a name timestamp. + self.year = str(datetime.now().year).zfill(4) + self.month = str(datetime.now().month).zfill(2) + self.day = str(datetime.now().day).zfill(2) + self.medium_name = 'initramfs-%s-%s%s%s' % (name, self.year, self.month, self.day) + self.digest_name = 'initramfs-%s.DIGESTS' % self.medium_name + + + def netbootit(self, alt_name=None): + """ TODO """ + if alt_name: + self.medium_name = 'initramfs-%s-%s%s%s' % (alt_name, self.year, self.month, self.day) + self.digest_name = 'initramfs-%s.DIGESTS' % self.medium_name + + # 0. Pepare netboot directory + netboot_dir = os.path.join(self.tmpdir, 'netboot') + shutil.rmtree(netboot_dir, ignore_errors=True) + os.makedirs(netboot_dir, mode=0o755, exist_ok=False) + + # 1. Move the kernel into the netboot directory. + kernel_dir = os.path.join(self.portage_configroot, 'boot') + kernel_path = os.path.join(kernel_dir, 'kernel') + shutil.copy(kernel_path, netboot_dir) + + # 2. Unpack the initramfs into kernelroot/initramfs direcotry + initramfs_root = os.path.join(self.kernelroot, 'initramfs') + shutil.rmtree(initramfs_root, ignore_errors=True) + os.makedirs(initramfs_root, mode=0o755, exist_ok=False) + + initramfs_path = os.path.join(kernel_dir, 'initramfs') + cmd = 'xz -dc %s | cpio -idv' % (initramfs_path) + + cwd = os.getcwd() + os.chdir(initramfs_root) + Execute(cmd, timeout=600, logfile=self.logfile, shell=True) + os.chdir(cwd) + + # 3. Make the squashfs image in the netboot directory. + squashfs_dir = os.path.join(initramfs_root, 'mnt/cdrom') + shutil.rmtree(squashfs_dir, ignore_errors=True) + os.makedirs(squashfs_dir, mode=0o755, exist_ok=False) + squashfs_path = os.path.join(squashfs_dir, 'image.squashfs') + cmd = 'mksquashfs %s %s -xattrs -comp xz' % (self.portage_configroot, squashfs_path) + Execute(cmd, timeout=None, logfile=self.logfile) + + # 4. Copy in the init script + init_path = os.path.join(self.libdir, 'scripts/init') + shutil.copy(init_path, initramfs_root) + + + # 5. Repack + initramfs_path = os.path.join(netboot_dir, self.medium_name) + cmd = 'find . -print | cpio -H newc -o | gzip -9 > %s' % initramfs_path + + cwd = os.getcwd() + os.chdir(initramfs_root) + Execute(cmd, timeout=600, logfile=self.logfile, shell=True) + os.chdir(cwd) |