//go:build linux

package layout

import (
	"os"
	"syscall"
)

// linkCount is the number of directory entries that name the file, read
// without following a symlink, and the file's inode so an operator can
// find the other names. A regular file the pass moves must have exactly
// one name: a second one somewhere else is a second reader and writer the
// move does not know about.
func linkCount(fi os.FileInfo) (nlink, inode uint64) {
	if st, ok := fi.Sys().(*syscall.Stat_t); ok {
		return uint64(st.Nlink), uint64(st.Ino)
	}
	return 1, 0
}