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authorAnthony G. Basile <blueness@gentoo.org>2015-09-13 13:35:51 -0400
committerAnthony G. Basile <blueness@gentoo.org>2015-09-13 13:35:51 -0400
commit363fc06845b0666dda39b48c205aa382168acd7a (patch)
treefd513082b86631720b90c7e49f7d9b73c329891e /grs
parentconf/systems.conf: update. (diff)
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grs/ISOIt.py: add in build for initramfs and iso.
Diffstat (limited to 'grs')
-rw-r--r--grs/ISOIt.py104
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)