Brad FitzpatrickandBrad Fitzpatrick
1d69894084
This applies the same treatment from PR #20162 (netlog) and PR #20171 (wglog) to the local Taildrive filesystem wiring, ending the per-netmap-update O(n) rebuild of the drive remotes list. This moves the O(n peers) taildrive-remote list rebuild from every peer change (which previously happened regardless of whether you were even using taildrive) to instead happen only as needed. That running on every netmap update and was a contributor to the broader quadratic behavior we want to eliminate when a single peer is added or removed. Instead, this introduces drive.RemoteSource, a small interface the Taildrive filesystem pulls from lazily on incoming WebDAV requests, and caches by a generation counter. ipn/ipnlocal installs a driveRemoteSource once at NewLocalBackend time and bumps LocalBackend.driveGen on the three events that can actually flip the drive-capable peer set: full netmap installs (domain + self caps), UpdateNetmapDelta (peer add/remove or per-peer address changes), and updatePacketFilter (since PeerCapability values are derived from the packet filter rules, not from peer.CapMap). The hook itself is kept but narrowed: it no longer takes a *netmap.NetworkMap and its only remaining job is to re-notify IPN bus listeners of the current local shares list on full installs. This is a dependency to removing the netmap.NetworkMap type from upstream callers, like wgengine.Engine in general. (Also add a bunch more tests) Updates #12542 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Change-Id: I7e3d2f5b4a9c8e1d6f0a3b7c9e2d4f8a1b6c5e9d
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.