golang.org/x/sys v0.32.0

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:golang/golang.org/x/sys@v0.32.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/golang.org/x/sys@v0.32.0

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:6b0021220516ee5a9847d0e05285404a2d955625fdf44b83152771a730b7705b","contract":["unix.Getpid returns a positive integer process ID","unix.Getpagesize returns a positive power-of-two page size","unix.NsecToTimespec converts nanoseconds into unix.Timespec seconds and nanoseconds","unix.TimespecToNsec converts unix.Timespec back into exact nanoseconds","unix.ByteSliceToString converts a null-terminated byte slice into a Go string"],"goal":"verify pkg:golang/golang.org/x/sys@v0.32.0","kind":"HOW","packages":["pkg:golang/golang.org/x/sys@v0.32.0"],"schemaVersion":1},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/golang.org/x/sys@v0.32.0"],"schemaVersion":1,"subject":"pkg:golang/golang.org/x/sys@v0.32.0","verifierAdapter":"golang@1"}

module example.com/sample

go 1.26.6

require golang.org/x/sys v0.32.0

golang.org/x/sys v0.32.0 h1:s77OFDvIQeibCmezSnk/q6iAfkdiQaJi4VzroCFrN20=
golang.org/x/sys v0.32.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=

package main

import (
	"fmt"

	"golang.org/x/sys/unix"
)

func main() {
	pid := unix.Getpid()
	pageSize := unix.Getpagesize()
	ts := unix.NsecToTimespec(2500000000)
	nsec := unix.TimespecToNsec(ts)
	str := unix.ByteSliceToString([]byte{'c', 's', 'x', 0})

	fmt.Printf("PID: %d\n", pid)
	fmt.Printf("Page size: %d\n", pageSize)
	fmt.Printf("Timespec: sec=%d nsec=%d -> total nsec=%d\n", ts.Sec, ts.Nsec, nsec)
	fmt.Printf("ByteSliceToString: %s\n", str)
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:golang/golang.org/x/sys@v0.32.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/golang.org/x/sys@v0.32.0"
  ]
}

package main

import (
	"fmt"
	"os"

	"golang.org/x/sys/unix"
)

func main() {
	if err := runContractTests(); err != nil {
		fmt.Fprintf(os.Stderr, "Contract test failed: %v\n", err)
		os.Exit(1)
	}
	fmt.Println("All contract assertions passed successfully.")
}

func runContractTests() error {
	// 1. unix.Getpid returns a positive integer process ID
	pid := unix.Getpid()
	if pid <= 0 {
		return fmt.Errorf("expected positive pid, got %d", pid)
	}

	// 2. unix.Getpagesize returns a positive power-of-two page size
	pageSize := unix.Getpagesize()
	if pageSize <= 0 || (pageSize&(pageSize-1)) != 0 {
		return fmt.Errorf("expected positive power-of-two page size, got %d", pageSize)
	}

	// 3. unix.NsecToTimespec converts nanoseconds into unix.Timespec seconds and nanoseconds
	ts := unix.NsecToTimespec(2500000000)
	if ts.Sec != 2 || ts.Nsec != 500000000 {
		return fmt.Errorf("expected Sec=2 Nsec=500000000, got Sec=%d Nsec=%d", ts.Sec, ts.Nsec)
	}

	// 4. unix.TimespecToNsec converts unix.Timespec back into exact nanoseconds
	nsec := unix.TimespecToNsec(ts)
	if nsec != 2500000000 {
		return fmt.Errorf("expected 2500000000 nsec, got %d", nsec)
	}

	// 5. unix.ByteSliceToString converts a null-terminated byte slice into a Go string
	rawBytes := []byte{'c', 's', 'x', 't', 'e', 's', 't', 0, 't', 'r', 'a', 'i', 'l'}
	converted := unix.ByteSliceToString(rawBytes)
	if converted != "csxtest" {
		return fmt.Errorf("expected 'csxtest', got %q", converted)
	}

	return nil
}