Spotter-Cluster/vmmgr
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Use cp -pr for lxchelper extract

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Disassembler 2019-12-18 10:12:54 +01:00
parent e57cfc493a
commit bfd1b7cb2f
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1 changed files with 3 additions and 12 deletions
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15
usr/bin/lxchelper
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@ -3,7 +3,7 @@
import argparse import argparse
import os import os
import shutil import subprocess
import sys import sys
import tempfile import tempfile
@ -16,22 +16,13 @@ def get_layers(container):
if line.startswith('lxc.hook.pre-start'): if line.startswith('lxc.hook.pre-start'):
return line.split()[-1].split(',') return line.split()[-1].split(',')
def copy(source, destination):
if os.path.isdir(source):
shutil.copytree(source, destination, True)
else:
shutil.copy2(source, destination)
def extract(args): def extract(args):
with tempfile.TemporaryDirectory() as tmp_rootfs: with tempfile.TemporaryDirectory() as tmp_rootfs:
layers = get_layers(args.container) layers = get_layers(args.container)
lxcmgr.mount_rootfs(args.container, layers, tmp_rootfs) lxcmgr.mount_rootfs(args.container, layers, tmp_rootfs)
source = os.path.join(tmp_rootfs, args.source.lstrip('/')) source = os.path.join(tmp_rootfs, args.source.lstrip('/'))
try: # Plain cp -pr as shutil.copytree() requires nonexistent target and copy2() doesn't retain owner
copy(source, args.destination) subprocess.run(['cp', '-pr', source, args.destination])
except:
lxcmgr.unmount_rootfs(tmp_rootfs)
raise
lxcmgr.unmount_rootfs(tmp_rootfs) lxcmgr.unmount_rootfs(tmp_rootfs)
def main(args): def main(args):