How to Retrieve a File\'s Hard Link Count in Go?

Accessing File's Hard Link Count in Go

Question:

The Go implementation of FileInfo provides extensive information about a file's properties. However, it does not include the number of hard links pointing to the file. How can we retrieve this information using the Go standard library?

Answer:

The number of hard links to a file is stored in the st_nlink field of the stat structure defined in . To access this information in Go, we need to retrieve the underlying system-specific data stored in the Sys field of FileInfo.

In this example, we demonstrate how to retrieve the hard link count on a Linux system:

<code class="go">package main

import (
    "fmt"
    "os"
    "syscall"
)

func main() {
    fi, err := os.Stat("filename")
    if err != nil {
        fmt.Println(err)
        return
    }

    var nlink uint64

    // Retrieve the system-specific data
    if sys := fi.Sys(); sys != nil {
        // Cast the system-specific data to a *syscall.Stat_t
        if stat, ok := sys.(*syscall.Stat_t); ok {
            nlink = uint64(stat.Nlink)
        }
    }

    fmt.Println(nlink)
}</code>

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