list-files-in-sandbox.py

import os, sys
from ctypes import CDLL

libc = CDLL("libc.so.6")

CLONE_NEWNS     = 0x00020000
CLONE_NEWCGROUP = 0x02000000
CLONE_NEWUTS    = 0x04000000
CLONE_NEWIPC    = 0x08000000
CLONE_NEWUSER   = 0x10000000
CLONE_NEWPID    = 0x20000000
CLONE_NEWNET    = 0x40000000
CLONE_NEWTIME   = 0x00000080


items = [
  [ "cgroup", CLONE_NEWCGROUP, ],
  [ "ipc", CLONE_NEWIPC, ],
  [ "uts", CLONE_NEWUTS, ],
  [ "net", CLONE_NEWNET, ],
  [ "pid", CLONE_NEWPID, ],
  [ "mnt", CLONE_NEWNS, ],
  [ "time", CLONE_NEWTIME, ],
]


PID = 2475362

for path, nstype in items:
  fd = open(f"/proc/{PID}/ns/{path}")
  libc.setns(fd.fileno(), nstype)
  fd.close()

def list(path, level):
  if path == "/proc" or path == "/sys" or path == "/dev/fd": return
  for f in os.scandir(path):
    print(f.path)
    if level > 0 and f.is_dir():
      list(f.path, level - 1)

list("/", 10)