This updates all source files to use a new standard header for copyright
and license declaration. Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.
This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.
Updates #6865
Signed-off-by: Will Norris <will@tailscale.com>
This was preventing tailscaled from shutting down properly if there were
active sessions in certain states (e.g. waiting in check mode).
Signed-off-by: Maisem Ali <maisem@tailscale.com>
And add a private context type in the process.
Updates #3802
Change-Id: I257187f4cfb0f2248d95b81c1dfe0911ef203b60
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
