32 lines
824 B
Go
32 lines
824 B
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package testenv
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import (
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"errors"
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"os"
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"path/filepath"
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"sync"
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"syscall"
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)
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var hasSymlink = sync.OnceValues(func() (bool, string) {
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tmpdir, err := os.MkdirTemp("", "symtest")
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if err != nil {
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panic("failed to create temp directory: " + err.Error())
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}
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defer os.RemoveAll(tmpdir)
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err = os.Symlink("target", filepath.Join(tmpdir, "symlink"))
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switch {
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case err == nil:
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return true, ""
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case errors.Is(err, syscall.EWINDOWS):
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return false, ": symlinks are not supported on your version of Windows"
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case errors.Is(err, syscall.ERROR_PRIVILEGE_NOT_HELD):
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return false, ": you don't have enough privileges to create symlinks"
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}
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return false, ""
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})
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