tailscale/paths/paths_unix.go
David Anderson dbc99dc0d2 paths: use /var/db for state on BSDs, and /var/run for sockets.
On BSD, /var/db is what linux calls /var/lib.

On modern linux, /run and /var/run are the same directory, but
on BSD the correct path is /var/run, so use that.

Fixes #79

Signed-off-by: David Anderson <dave@natulte.net>
2020-03-03 17:49:31 -08:00

51 lines
1016 B
Go

// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !windows
package paths
import (
"path/filepath"
"runtime"
"golang.org/x/sys/unix"
)
func init() {
stateFileFunc = stateFileUnix
}
func statePath() string {
switch runtime.GOOS {
case "linux":
return "/var/lib/tailscale/tailscaled.state"
case "freebsd", "openbsd":
return "/var/db/tailscale/tailscaled.state"
default:
return ""
}
}
func stateFileUnix() string {
path := statePath()
if path == "" {
return ""
}
try := path
for i := 0; i < 3; i++ { // check writability of the file, /var/lib/tailscale, and /var/lib
err := unix.Access(try, unix.O_RDWR)
if err == nil {
return path
}
try = filepath.Dir(try)
}
// TODO: try some $HOME/.tailscale or XDG path? But will it
// even work usefully enough as non-root? Probably not. Maybe
// best to require it be explicit in that case.
return ""
}