32 lines
685 B
Go
32 lines
685 B
Go
//go:build !windows
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package copier
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import (
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"os"
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"sync"
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"syscall"
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)
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type hardlinkDeviceAndInode struct {
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device, inode uint64
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}
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type hardlinkChecker struct {
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hardlinks sync.Map
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}
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func (h *hardlinkChecker) Check(fi os.FileInfo) string {
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if st, ok := fi.Sys().(*syscall.Stat_t); ok && fi.Mode().IsRegular() && st.Nlink > 1 {
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if name, ok := h.hardlinks.Load(makeHardlinkDeviceAndInode(st)); ok && name.(string) != "" {
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return name.(string)
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}
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}
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return ""
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}
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func (h *hardlinkChecker) Add(fi os.FileInfo, name string) {
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if st, ok := fi.Sys().(*syscall.Stat_t); ok && fi.Mode().IsRegular() && st.Nlink > 1 {
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h.hardlinks.Store(makeHardlinkDeviceAndInode(st), name)
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}
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}
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