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On Windows, os.Symlink requires Developer Mode or admin privileges. Extract symlink creation into platform-specific files: on non-Windows, behavior is unchanged (os.Symlink). On Windows, try os.Symlink first, then fall back to directory junctions (mklink /J) for dirs and file copy for files. Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
33 lines
827 B
Go
33 lines
827 B
Go
//go:build windows
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package execenv
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import (
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"fmt"
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"os"
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"os/exec"
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)
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// createDirLink tries os.Symlink first (requires Developer Mode or admin on
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// Windows). If that fails, it falls back to a directory junction (mklink /J)
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// which works without elevated privileges.
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func createDirLink(src, dst string) error {
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if err := os.Symlink(src, dst); err == nil {
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return nil
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}
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out, err := exec.Command("cmd", "/c", "mklink", "/J", dst, src).CombinedOutput()
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if err != nil {
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return fmt.Errorf("mklink /J %s %s: %s: %w", dst, src, out, err)
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}
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return nil
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}
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// createFileLink tries os.Symlink first. If that fails, it falls back to
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// copying the file so the content is still available.
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func createFileLink(src, dst string) error {
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if err := os.Symlink(src, dst); err == nil {
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return nil
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}
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return copyFile(src, dst)
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}
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