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package main
import (
"encoding/json"
"flag"
"fmt"
"os"
"golang.org/x/sys/unix"
)
const (
myName = "statfs"
)
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: %s PATH\n", myName)
fmt.Fprintf(os.Stderr, "Dump the statfs information for PATH to the console, JSON format.\n")
os.Exit(1)
}
flag.Parse()
if flag.NArg() != 1 {
flag.Usage()
}
path := flag.Arg(0)
var st unix.Statfs_t
err := unix.Statfs(path, &st)
if err != nil {
fmt.Fprintf(os.Stderr, "statfs syscall returned error: %v\n", err)
os.Exit(2)
}
jsn, _ := json.MarshalIndent(st, "", "\t")
fmt.Println(string(jsn))
}
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