3 files changed, 0 insertions, 136 deletions
diff --git a/internal/config/atomicfile/README.md b/internal/config/atomicfile/README.md
deleted file mode 100644
index 998b8a4..0000000
--- a/internal/config/atomicfile/README.md
+++ /dev/null
@@ -1,38 +0,0 @@
-# Atomicfile
-
-This package was copied from: https://github.com/tailscale/tailscale/blob/21460a5b14e9fb883fedd6071ff53729ed68370c/atomicfile
-
-We only did some tiny formatting change.
-
-# License:
-
-```
-BSD 3-Clause License
-
-Copyright (c) 2020 Tailscale Inc & AUTHORS.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-1. Redistributions of source code must retain the above copyright notice, this
-   list of conditions and the following disclaimer.
-
-2. Redistributions in binary form must reproduce the above copyright notice,
-   this list of conditions and the following disclaimer in the documentation
-   and/or other materials provided with the distribution.
-
-3. Neither the name of the copyright holder nor the names of its
-   contributors may be used to endorse or promote products derived from
-   this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-```
diff --git a/internal/config/atomicfile/atomicfile.go b/internal/config/atomicfile/atomicfile.go
deleted file mode 100644
index 542f58a..0000000
--- a/internal/config/atomicfile/atomicfile.go
+++ /dev/null
@@ -1,51 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-// Package atomicfile contains code related to writing to filesystems
-// atomically.
-//
-// This package should be considered internal; its API is not stable.
-package atomicfile // import "tailscale.com/atomicfile"
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"runtime"
-)
-
-// WriteFile writes data to filename+some suffix, then renames it into filename.
-// The perm argument is ignored on Windows. If the target filename already
-// exists but is not a regular file, WriteFile returns an error.
-func WriteFile(filename string, data []byte, perm os.FileMode) (err error) {
-	fi, err := os.Stat(filename)
-	if err == nil && !fi.Mode().IsRegular() {
-		return fmt.Errorf("%s already exists and is not a regular file", filename)
-	}
-	f, err := os.CreateTemp(filepath.Dir(filename), filepath.Base(filename)+".tmp")
-	if err != nil {
-		return err
-	}
-	tmpName := f.Name()
-	defer func() {
-		if err != nil {
-			f.Close()          //nolint:errcheck
-			os.Remove(tmpName) //nolint:errcheck
-		}
-	}()
-	if _, err := f.Write(data); err != nil {
-		return err
-	}
-	if runtime.GOOS != "windows" {
-		if err := f.Chmod(perm); err != nil {
-			return err
-		}
-	}
-	if err := f.Sync(); err != nil {
-		return err
-	}
-	if err := f.Close(); err != nil {
-		return err
-	}
-	return os.Rename(tmpName, filename)
-}
diff --git a/internal/config/atomicfile/atomicfile_test.go b/internal/config/atomicfile/atomicfile_test.go
deleted file mode 100644
index f14cb31..0000000
--- a/internal/config/atomicfile/atomicfile_test.go
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build !js && !windows
-
-package atomicfile
-
-import (
-	"net"
-	"os"
-	"path/filepath"
-	"runtime"
-	"strings"
-	"testing"
-)
-
-func TestDoesNotOverwriteIrregularFiles(t *testing.T) {
-	// Per tailscale/tailscale#7658 as one example, almost any imagined use of
-	// atomicfile.Write should likely not attempt to overwrite an irregular file
-	// such as a device node, socket, or named pipe.
-
-	const filename = "TestDoesNotOverwriteIrregularFiles"
-	var path string
-	// macOS private temp does not allow unix socket creation, but /tmp does.
-	if runtime.GOOS == "darwin" {
-		path = filepath.Join("/tmp", filename)
-		t.Cleanup(func() { os.Remove(path) }) //nolint:errcheck
-	} else {
-		path = filepath.Join(t.TempDir(), filename)
-	}
-
-	// The least troublesome thing to make that is not a file is a unix socket.
-	// Making a null device sadly requires root.
-	l, err := net.ListenUnix("unix", &net.UnixAddr{Name: path, Net: "unix"})
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer l.Close() //nolint:errcheck
-
-	err = WriteFile(path, []byte("hello"), 0o644)
-	if err == nil {
-		t.Fatal("expected error, got nil")
-	}
-	if !strings.Contains(err.Error(), "is not a regular file") {
-		t.Fatalf("unexpected error: %v", err)
-	}
-}