def squash(self, target_dir):
"""
Extract and squash all the layers of this image as a single merged
rootfs directory rooted in the `target_dir` directory.
"""
from container_inspector import rootfs
rootfs.rebuild_rootfs(self, target_dir)
def squash(self, target_dir):
"""
Extract and squash all the layers of this image as a single rootfs rooted in the `target_dir` directory.
If `use_layer_id` is True, extract in a dir named ``target_dir/layer_id/`
Cache the location where this layer was last extracted in the
self.extracted_to_location attribute
"""
from container_inspector import rootfs
rootfs.rebuild_rootfs(self, target_dir)
def test_rebuild_rootfs_simple(self):
test_dir = self.extract_test_tar('rootfs/hello-world.tar')
img = image.Image.get_images_from_dir(test_dir)[0]
target_dir = self.get_temp_dir()
rebuild_rootfs(img, target_dir)
results = sorted([p.replace(target_dir, '')
for p in fileutils.resource_iter(target_dir)])
expected = ['/hello']
assert expected == results
def test_rebuild_rootfs_with_delete(self):
test_dir = self.extract_test_tar('rootfs/she-image_from_scratch-1.0.tar')
img = image.Image.get_images_from_dir(test_dir)[0]
target_dir = self.get_temp_dir()
rebuild_rootfs(img, target_dir)
results = sorted([p.replace(target_dir, '')
for p in fileutils.resource_iter(target_dir)])
expected = [
'/additions',
'/additions/bar',
'/additions/baz',
'/additions/baz/this',
'/additions/foo',
'/additions/hello',
'/hello',
]
assert expected == results
def test_rebuild_rootfs_multilayers(self):
test_dir = self.extract_test_tar('rootfs/imagesv11.tar')
target_dir = self.get_temp_dir()
for img in image.Image.get_images_from_dir(test_dir):
rebuild_rootfs(img, target_dir)
results = sorted([
p.replace(target_dir, '')
for p in fileutils.resource_iter(target_dir, with_dirs=False)
])
expected = [
'/bin/busybox',
'/etc/fstab',
'/etc/group',
'/etc/hostname',
'/etc/hosts',
'/etc/init.d/S01logging',
'/etc/init.d/S20urandom',
'/etc/init.d/S40network',
'/etc/init.d/rcK',
'/etc/init.d/rcS',
'/etc/inittab',
'/etc/inputrc',
'/etc/iproute2/ematch_map',
'/etc/iproute2/group',
'/etc/iproute2/rt_dsfield',
'/etc/iproute2/rt_protos',
'/etc/iproute2/rt_realms',
'/etc/iproute2/rt_scopes',
'/etc/iproute2/rt_tables',
'/etc/issue',
'/etc/ld.so.conf',
'/etc/network/interfaces',
'/etc/nsswitch.conf',
'/etc/os-release',
'/etc/passwd',
'/etc/profile',
'/etc/protocols',
'/etc/random-seed',
'/etc/securetty',
'/etc/services',
'/etc/shadow',
'/hello',
'/lib/ld64-uClibc-0.9.33.2.so',
'/lib/libcrypt-0.9.33.2.so',
'/lib/libdl-0.9.33.2.so',
'/lib/libgcc_s.so.1',
'/lib/libm-0.9.33.2.so',
'/lib/libnsl-0.9.33.2.so',
'/lib/libpthread-0.9.33.2.so',
'/lib/libresolv-0.9.33.2.so',
'/lib/librt-0.9.33.2.so',
'/lib/libuClibc-0.9.33.2.so',
'/lib/libutil-0.9.33.2.so',
'/root/.bash_history',
'/root/.bash_logout',
'/root/.bash_profile',
'/sbin/bridge',
'/sbin/genl',
'/sbin/ifstat',
'/sbin/ip',
'/sbin/ldconfig',
'/sbin/lnstat',
'/sbin/nstat',
'/sbin/routef',
'/sbin/routel',
'/sbin/rtacct',
'/sbin/rtmon',
'/sbin/rtpr',
'/sbin/ss',
'/sbin/tc',
'/usr/bin/getconf',
'/usr/bin/ldd',
'/usr/lib/libip4tc.so.0.1.0',
'/usr/lib/libiptc.so.0.0.0',
'/usr/lib/libxtables.so.10.0.0',
'/usr/lib/tc/experimental.dist',
'/usr/lib/tc/m_xt.so',
'/usr/lib/tc/normal.dist',
'/usr/lib/tc/pareto.dist',
'/usr/lib/tc/paretonormal.dist',
'/usr/sbin/xtables-multi',
'/usr/share/udhcpc/default.script',
]
assert expected == results
def _container_inspector_squash(image_path, extract_directory):
images = get_images_from_dir_or_tarball(image_path)
assert len(images) == 1, 'Can only squash one image at a time'
img = images[0]
target_loc = os.path.abspath(os.path.expanduser(extract_directory))
rootfs.rebuild_rootfs(img, target_loc)
