remove usecases

granulate_utils/linux/ns.py

@@ -333,33 +333,3 @@ def resolve_host_path(process: Process, ns_path: str, from_ancestor: bool = True
     Get a path in the host mount namespace pointing to path in process mount namespace.
     """
     return resolve_proc_root_links(get_proc_root_path(process, from_ancestor=from_ancestor), ns_path)
-
-
-def get_host_pid(nspid: int, container_id: str) -> Optional[int]:
-    assert len(container_id) == 64, f"Invalid container id {container_id!r}"
-
-    pid_namespace = ""
-    running_processes = list(process_iter())
-
-    # Get the pid namespace of the given container
-    for process in running_processes:
-        try:
-            if container_id == containers.get_process_container_id(process):
-                pid_namespace = os.readlink(f"/proc/{process.pid}/ns/pid")
-                break
-        except (FileNotFoundError, NoSuchProcess):
-            continue
-
-    if not pid_namespace:
-        return None
-
-    # Here we need to find the process by comparing pid namespaces and not by comparing cgroups, because
-    # technically a process that's running in a container pid namespace doesn't have to share its cgroup
-    for process in running_processes:
-        try:
-            if os.readlink(f"/proc/{process.pid}/ns/pid") == pid_namespace and get_process_nspid(process) == nspid:
-                return process.pid
-        except (FileNotFoundError, NoSuchProcess, PermissionError):
-            continue
-
-    return None