From 00841e88b74864fd1c287ff27c1dd9387902dcf9 Mon Sep 17 00:00:00 2001
From: Helmut Grohne <helmut@subdivi.de>
Date: Wed, 21 Feb 2024 15:45:23 +0100
Subject: examples/chrootfuse2fs.py: generalize to allow squashfs

---
 examples/chrootfuse2fs.py | 67 -----------------------------------------------
 1 file changed, 67 deletions(-)
 delete mode 100755 examples/chrootfuse2fs.py

(limited to 'examples/chrootfuse2fs.py')

diff --git a/examples/chrootfuse2fs.py b/examples/chrootfuse2fs.py
deleted file mode 100755
index eaffe25..0000000
--- a/examples/chrootfuse2fs.py
+++ /dev/null
@@ -1,67 +0,0 @@
-#!/usr/bin/python3
-# Copyright 2024 Helmut Grohne <helmut@subdivi.de>
-# SPDX-License-Identifier: GPL-3
-
-"""Mount a given ext4 filesystem image inside a user and mount namespace using
-unprivileged fuse2fs and chroot into the mouned filesystem.
-
-This requires a fuse package with support for /dev/fd/N. Either with fuse2 via
-https://bugs.debian.org/1055222 or when e2fsprogs has been ported to fuse3.
-"""
-
-import os
-import pathlib
-import socket
-import sys
-
-if __file__.split("/")[-2:-1] == ["examples"]:
-    sys.path.insert(0, "/".join(__file__.split("/")[:-2]))
-
-import linuxnamespaces
-
-
-def main() -> None:
-    fsimage = pathlib.Path(sys.argv[1])
-    assert fsimage.exists()
-    uidmap = linuxnamespaces.IDAllocation.loadsubid("uid").allocatemap(65536)
-    gidmap = linuxnamespaces.IDAllocation.loadsubid("gid").allocatemap(65536)
-    mainpid = os.getpid()
-    mainsock, childsock = socket.socketpair()
-    @linuxnamespaces.run_in_fork
-    def setup() -> None:
-        mainsock.close()
-        linuxnamespaces.newidmaps(mainpid, [uidmap], [gidmap])
-        childsock.send(b"\0")
-        _, fds, _, _ = socket.recv_fds(childsock, 1, 1, 0)
-        childsock.close()
-        os.set_inheritable(fds[0], True)
-        os.execlp("fuse2fs", "fuse2fs", str(fsimage), "/dev/fd/%d" % fds[0])
-    linuxnamespaces.unshare(
-        linuxnamespaces.CloneFlags.NEWUSER | linuxnamespaces.CloneFlags.NEWNS
-    )
-    setup.start()
-    mainsock.recv(1)
-    os.setreuid(0, 0)
-    os.setregid(0, 0)
-    fusefd = os.open("/dev/fuse", os.O_RDWR)
-    socket.send_fds(mainsock, [b"\0"], [fusefd])
-    mainsock.close()
-    linuxnamespaces.mount(
-        str(fsimage),
-        "/mnt",
-        "fuse.ext4",
-        linuxnamespaces.MountFlags.NONE,
-        "fd=%d,rootmode=040755,user_id=0,group_id=0,allow_other" % fusefd,
-    )
-    os.chdir("/mnt")
-    linuxnamespaces.bind_mount("/proc", "proc", recursive=True)
-    linuxnamespaces.bind_mount("/sys", "sys", recursive=True)
-    linuxnamespaces.populate_dev("/", ".", pidns=False, tun=False)
-    linuxnamespaces.pivot_root(".", ".")
-    linuxnamespaces.umount(".", linuxnamespaces.UmountFlags.DETACH)
-    os.close(fusefd)
-    os.execlp(os.environ["SHELL"], os.environ["SHELL"])
-
-
-if __name__ == "__main__":
-    main()
-- 
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