c1d20a3b8c
On macOS the incubator went through /usr/bin/login -pq <user> <shell> -c <cmd> for any session, including non-TTY 'ssh host cmd' exec sessions. /usr/bin/login does not propagate the child command's exit status when invoked this way: it exits 0 once the child has been spawned, so 'ssh mac exit 42' returned 0 instead of 42 and 'ssh mac /nonexistent/binary' returned 0 instead of 127. The exit-status frame ordering fix in this branch is still required (the server has to send the right frames in the right order), but it is not sufficient on its own when the value being sent is wrong. For interactive shells (hasTTY) login still gives us the desired PAM 'remote' session and utmpx accounting, and exit-code propagation is not user-observable, so the login path is kept. For non-TTY command exec sessions we now fall through to handleSSHInProcess, which uses dropPrivileges + cmd.Run + os.Exit(code) — the same path Linux already uses for non-TTY sessions, and the path that produces correct exit codes in the integration tests. Verified against the macOS CI logs from run 25326829991: the artifact shows the server sending exit-status 0 from /usr/bin/login -pq ... /bin/bash -c 'exit 42', confirming the diagnosis. Verified on Linux that the fall-through path produces the right exit codes (integration tests pass 5x consecutively on the full incubator path including drop-privileges). Fixes #18256 Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
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 1.26. (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.