James Tucker
9e396012a8
Monitor teardown SIGHUPed and SIGKILLed every remembered child group when the transport closed. sshd signals nothing at a non-PTY session end; background jobs with redirected stdio survive and reparent to init. Clients rely on that: VS Code Remote-SSH starts its remote server as a plain background job in the session's group and expects it to outlive connection drops, and tailscale upgrades run as non-PTY execs whose work should survive a daemon restart. Now only SSHTerminationError causes (revocation, session-duration, recording failure) kill the process tree. Everything else — client disconnect, daemon shutdown — closes I/O without signals: PTY masters close and the driver SIGHUPs the foreground group, non-PTY processes exit on EOF and SIGPIPE or keep running. Monitor teardown kills only forwarding children, unless revocation armed the new kill-all op first, since its per-session kicks race the close. No zombie leak: the monitor reaps its table, and reparented survivors are reaped by init. Fixes #22076 Signed-off-by: James Tucker <james@tailscale.com> Change-Id: I70b4ef40035330dd542d256ba79d889a12426a74
Tailscale
Private WireGuard® networks made easy
Overview
This repository contains the majority of Tailscale's open source code.
Notably, it includes the tailscaled daemon and
the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows,
macOS, and to varying degrees
on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's
code, but this repo doesn't contain the mobile GUI code.
Other Tailscale repos of note:
- the Android app is at https://github.com/tailscale/tailscale-android
- the Synology package is at https://github.com/tailscale/tailscale-synology
- the QNAP package is at https://github.com/tailscale/tailscale-qpkg
- the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.
Using
We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.
Other clients
The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.
Building
We always require the latest Go release, currently Go 1.27. (While we build releases with our Go fork, its use is not required.)
go install tailscale.com/cmd/tailscale{,d}
If you're packaging Tailscale for distribution, use build_dist.sh
instead, to burn commit IDs and version info into the binaries:
./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled
If your distro has conventions that preclude the use of
build_dist.sh, please do the equivalent of what it does in your
distro's way, so that bug reports contain useful version information.
Bugs
Please file any issues about this code or the hosted service on the issue tracker.
Contributing
PRs welcome! But please file bugs. Commit messages should reference bugs.
We require Developer Certificate of
Origin
Signed-off-by lines in commits.
See commit-messages.md (or skim git log) for our commit message style.
About Us
Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:
- https://github.com/tailscale/tailscale/graphs/contributors
- https://github.com/tailscale/tailscale-android/graphs/contributors
Legal
WireGuard is a registered trademark of Jason A. Donenfeld.