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author | Simon McVittie <smcv@collabora.com> | 2017-10-31 15:27:43 +0000 |
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committer | Atomic Bot <atomic-devel@projectatomic.io> | 2017-11-03 17:55:16 +0000 |
commit | 3c488585bd9897c842c1708ddb413adee5a9b43a (patch) | |
tree | 4c7e2ca12da090cdf5b57438606b903a74bbdc2e | |
parent | b8fa270e8937ed26e4e684050d221202b475c708 (diff) | |
download | bubblewrap-3c488585bd9897c842c1708ddb413adee5a9b43a.tar.gz |
userns-block-fd: Add support for Python 3
According to PEP 394, the python command is meant to be Python 2
until at least 2020, so in practice this script will be run with
Python 2 for now (except on Arch Linux); but it seems good to be
more future-proof.
In Python 3, os.write() takes a bytestring (bytes object), not a
text string (str/unicode object). In Python 2 ≥ 2.6, the b'' syntax
is supported and gives a str object, because that was a bytestring
in Python 2; either way, b'1' is an acceptable argument to os.write().
In Python ≥ 3.4, the result of os.pipe() is close-on-exec
(non-inheritable) by default, so undo that where needed.
Signed-off-by: Simon McVittie <smcv@collabora.com>
Closes: #246
Approved by: giuseppe
-rwxr-xr-x | demos/userns-block-fd.py | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/demos/userns-block-fd.py b/demos/userns-block-fd.py index 67b6d8b..4c68242 100755 --- a/demos/userns-block-fd.py +++ b/demos/userns-block-fd.py @@ -1,6 +1,6 @@ #!/usr/bin/env python -import os, select, subprocess, json +import os, select, subprocess, sys, json pipe_info = os.pipe() userns_block = os.pipe() @@ -19,11 +19,15 @@ if pid != 0: subprocess.call(["newuidmap", child_pid, "0", str(os.getuid()), "1"]) subprocess.call(["newgidmap", child_pid, "0", str(os.getgid()), "1"]) - os.write(userns_block[1], '1') + os.write(userns_block[1], b'1') else: os.close(pipe_info[0]) os.close(userns_block[1]) + if sys.version_info >= (3, 4): + os.set_inheritable(pipe_info[1], True) + os.set_inheritable(userns_block[0], True) + args = ["bwrap", "bwrap", "--unshare-all", |