The docs say:
Note that while correct uses of TryLock do exist, they are rare,
and use of TryLock is often a sign of a deeper problem in a particular use of mutexes.
Rare code! Or bad code! Who can tell!
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
Also make IPPrefixSliceOf use Slice[netaddr.IPPrefix] as it also
provides additional functions besides the standard ones provided by
Slice[T].
Signed-off-by: Maisem Ali <maisem@tailscale.com>
There is a Cosmic Background level of DERP Unreachability,
with individual nodes or regions becoming unreachable briefly
and returning a short time later. This is due to hosting provider
outages or just the Internet sloshing about.
Returning a 500 error pages a human. Being awoken at 3am for
a transient error is annoying.
For relatively small levels of badness don't page a human,
just post to Slack. If the outage impacts a significant fraction
of the DERP fleet, then page a human.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
It includes a fix to allow us to use Go 1.18.
We can now remove our Tailscale-only build tags.
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
The certstore code is impacted by golang/go#51726.
The Tailscale Go toolchain fork contains a temporary workaround,
so it can compile it. Once the upstream toolchain can compile certstore,
presumably in Go 1.18.1, we can revert this change.
Note that depaware runs with the upstream toolchain.
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
As of Go 1.18, the register ABI list includes arm64, amd64,
ppc64, and ppc64le. This is a large enough percentage of the
architectures that it's not worth explaining.
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
This is required for staticcheck to process code
using Go 1.18.
This puts us on a random commit on the bleeding edge
of staticcheck, which isn't great, but there don't
appear to have been any releases yet that support 1.18.
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
The version string changed slightly. Adapt.
And always check the current Go version to prevent future
accidental regressions. I would have missed this one had
I not explicitly manually checked it.
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
A new flag --conflict=(skip|overwrite|rename) lets users specify
what to do when receiving files that match a same-named file in
the target directory.
Updates #3548
Signed-off-by: David Eger <david.eger@gmail.com>
- Remove the expanded module files, as Go can likely expand the zips
faster than tar can expand the extra copies.
- Add the go-build cache.
- Remove the extra restore key to avoid extra cache lookups on miss.
Signed-off-by: James Tucker <james@tailscale.com>
Co-authored-by: James Tucker <james@tailscale.com>
Still not sure the exact rules of how/when/who's supposed to set
these, but this works for now on making them match. Baby steps.
Will research more and adjust later.
Updates #4146 (but not enough to fix it, something's still wrong)
Updates #3802
Change-Id: I496d8cd7e31d45fe9ede88fc8894f35dc096de67
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We need to be able to provide the ability for the GUI clients to resolve and set
the exit node IP from an untrusted string, thus enabling the ability to specify
that information via enterprise policy.
This patch moves the relevant code out of the handler for `tailscale up`,
into a method on `Prefs` that may then be called by GUI clients.
We also update tests accordingly.
Updates https://github.com/tailscale/corp/issues/4239
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
Enable use of command line arguments with tailscale cli on gokrazy. Before
this change using arguments like "up" would cause tailscale cli to be
repeatedly restarted by gokrazy process supervisor.
We never want to have gokrazy restart tailscale cli, even if user would
manually start the process.
Expected usage is that user creates files:
flags/tailscale.com/cmd/tailscale/flags.txt:
up
flags/tailscale.com/cmd/tailscaled/flags.txt:
--statedir=/perm/tailscaled/
--tun=userspace-networking
Then tailscale prints URL for user to log in with browser.
Alternatively it should be possible to use up with auth key to allow
unattended gokrazy installs.
Signed-off-by: Joonas Kuorilehto <joneskoo@derbian.fi>
Currently `Write` returns the number of ciphertext bytes written.
According to the docs for io.Writer, Write should return the amount
of bytes consumed from the input.
```
// Write writes len(p) bytes from p to the underlying data stream.
// It returns the number of bytes written from p (0 <= n <= len(p))
// and any error encountered that caused the write to stop early.
// Write must return a non-nil error if it returns n < len(p).
// Write must not modify the slice data, even temporarily.
Write(p []byte) (n int, err error)
```
Fixes#4126
Signed-off-by: Maisem Ali <maisem@tailscale.com>
