def pivot_namespace_root(target):
old_root = tempfile.mkdtemp(prefix='.oldroot', dir=target)
pivot_root(target, old_root)
os.chdir('/')
pivoted_old_root = '/' + os.path.basename(old_root)
umount(pivoted_old_root)
os.rmdir(pivoted_old_root)
def pivot_namespace_root(target):
old_root = tempfile.mkdtemp(prefix='.oldroot', dir=target)
pivot_root(target, old_root)
os.chdir('/')
pivoted_old_root = '/' + os.path.basename(old_root)
umount(pivoted_old_root)
os.rmdir(pivoted_old_root)
def mount_etc_files(target_dir_func):
tmpfs = tempfile.mkdtemp(prefix='.etc', dir=target_dir_func('/'))
mount('tmpfs', tmpfs, 'tmpfs', MS_NOEXEC | MS_NODEV | MS_NOSUID, 'size=1m')
def write_and_mount_file(path, content):
tmpfile = os.path.join(tmpfs, os.path.basename(path))
with open(tmpfile, 'w') as fp:
fp.write(content)
target = target_dir_func(path)
if not os.path.exists(target):
open(target, 'w').close()
bind_mount(tmpfile, target)
for etc_path in ('/etc/resolv.conf', '/etc/hosts'):
etc_content = open(etc_path).read()
write_and_mount_file(etc_path, etc_content)
write_and_mount_file('/etc/hostname', socket.gethostname() + '\n')
umount(tmpfs)
os.rmdir(tmpfs)
def mount_etc_files(target_dir_func):
tmpfs = tempfile.mkdtemp(prefix='.etc', dir=target_dir_func('/'))
mount('tmpfs', tmpfs, 'tmpfs', MS_NOEXEC | MS_NODEV | MS_NOSUID, 'size=1m')
def write_and_mount_file(path, content):
tmpfile = os.path.join(tmpfs, os.path.basename(path))
with open(tmpfile, 'w') as fp:
fp.write(content)
target = target_dir_func(path)
if not os.path.exists(target):
open(target, 'w').close()
bind_mount(tmpfile, target)
for etc_path in ('/etc/resolv.conf', '/etc/hosts'):
etc_content = open(etc_path).read()
write_and_mount_file(etc_path, etc_content)
write_and_mount_file('/etc/hostname', socket.gethostname() + '\n')
umount(tmpfs)
os.rmdir(tmpfs)
