mirror of https://github.com/docker/cli.git
47 lines
839 B
Go
47 lines
839 B
Go
package fsutil
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import (
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"os"
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"github.com/pkg/errors"
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)
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// Hardlinks validates that all targets for links were part of the changes
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type Hardlinks struct {
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seenFiles map[string]struct{}
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}
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func (v *Hardlinks) HandleChange(kind ChangeKind, p string, fi os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if v.seenFiles == nil {
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v.seenFiles = make(map[string]struct{})
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}
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if kind == ChangeKindDelete {
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return nil
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}
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stat, ok := fi.Sys().(*Stat)
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if !ok {
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return errors.Errorf("invalid change without stat info: %s", p)
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}
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if fi.IsDir() || fi.Mode()&os.ModeSymlink != 0 {
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return nil
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}
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if len(stat.Linkname) > 0 {
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if _, ok := v.seenFiles[stat.Linkname]; !ok {
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return errors.Errorf("invalid link %s to unknown path: %q", p, stat.Linkname)
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}
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} else {
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v.seenFiles[p] = struct{}{}
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}
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return nil
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}
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