Like "getfattr -d"

listfattrs.go

package main

import (
	"fmt"
	"log"
	"os"

	"github.com/pkg/xattr"
)

func handleError(e error) {
	if e != nil {
		log.Fatal(e)
	}
}

func main() {
	if len(os.Args) < 2 {
		fmt.Println("error - must provide the path to a file or directory")
		os.Exit(1)
	}
	paths := os.Args[1:]

	for _, path := range paths {
		list, err := xattr.List(path)
		handleError(err)
		if len(list) == 0 {
			continue
		}

		fmt.Println(path)
		for _, attr := range list {
			val, err := xattr.Get(path, attr)
			handleError(err)
			fmt.Printf("  %s: %s\n", attr, val)
		}
		fmt.Println()
	}
}

getfattr -d only lists attributes in the user namespace. This will dump all extended attributes for a file.