golang.org/x/sys v0.47.0: registry.QUERY_VALUE

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 golang.org/x/sys/windows/registry.QUERY_VALUE in pkg:golang/golang.org/x/sys@v0.47.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/golang.org/x/sys@v0.47.0
Demonstrate these symbols/APIs:
  - golang.org/x/sys/windows/registry.QUERY_VALUE

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:sha256:3134e2e65efe81b4261a516d6b0b78cd899f88094d653f14ef2d2f33ce1754f5","contract":["registry.QUERY_VALUE constant equals 0x0001","registry.QUERY_VALUE bitwise mask check succeeds","registry.READ access mask includes registry.QUERY_VALUE","registry.ALL_ACCESS access mask includes registry.QUERY_VALUE"],"goal":"verify golang.org/x/sys/windows/registry.QUERY_VALUE in pkg:golang/golang.org/x/sys@v0.47.0","kind":"HOW","packages":["pkg:golang/golang.org/x/sys@v0.47.0"],"schemaVersion":1,"symbols":["golang.org/x/sys/windows/registry.QUERY_VALUE"]},"contractCommand":["sh","-c","GOOS=windows go build ./..."],"environment":{"arch":"x64","ecosystem":"golang","os":"windows","osVersionBucket":"11","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/golang.org/x/sys@v0.47.0"],"schemaVersion":1,"symbols":["golang.org/x/sys/windows/registry.QUERY_VALUE"],"verifierAdapter":"golang@1"}

module sample

go 1.25.0

require golang.org/x/sys v0.47.0

golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=

package main

import (
	"fmt"

	"golang.org/x/sys/windows/registry"
)

// QueryValueMask returns the access mask constant registry.QUERY_VALUE.
func QueryValueMask() uint32 {
	return registry.QUERY_VALUE
}

// OpenKeyWithQueryValue opens a Windows registry key with registry.QUERY_VALUE access rights.
func OpenKeyWithQueryValue(root registry.Key, path string) (registry.Key, error) {
	return registry.OpenKey(root, path, registry.QUERY_VALUE)
}

// HasQueryValueAccess checks if the QUERY_VALUE permission bit is set in the provided access mask.
func HasQueryValueAccess(access uint32) bool {
	return (access & registry.QUERY_VALUE) == registry.QUERY_VALUE
}

func main() {
	mask := QueryValueMask()
	fmt.Printf("registry.QUERY_VALUE access mask: 0x%04X\n", mask)
	fmt.Printf("Has QUERY_VALUE in READ: %t\n", HasQueryValueAccess(registry.READ))
	fmt.Printf("Has QUERY_VALUE in ALL_ACCESS: %t\n", HasQueryValueAccess(registry.ALL_ACCESS))
}

{
  "schemaVersion": 1,
  "goal": "verify golang.org/x/sys/windows/registry.QUERY_VALUE in pkg:golang/golang.org/x/sys@v0.47.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/golang.org/x/sys@v0.47.0"
  ],
  "symbols": [
    "golang.org/x/sys/windows/registry.QUERY_VALUE"
  ]
}

package main

import (
	"fmt"
	"os"

	"golang.org/x/sys/windows/registry"
)

func assertTrue(name string, condition bool) {
	if !condition {
		fmt.Fprintf(os.Stderr, "Assertion failed for %s: expected true, got false\n", name)
		os.Exit(1)
	}
}

func assertEqualUint32(name string, actual, expected uint32) {
	if actual != expected {
		fmt.Fprintf(os.Stderr, "Assertion failed for %s: got 0x%04X, expected 0x%04X\n", name, actual, expected)
		os.Exit(1)
	}
}

func main() {
	// Assertion 1: registry.QUERY_VALUE constant equals 0x0001
	assertEqualUint32("registry.QUERY_VALUE constant value", registry.QUERY_VALUE, 0x0001)

	// Assertion 2: registry.QUERY_VALUE bitwise mask check succeeds
	combinedAccess := uint32(registry.QUERY_VALUE | registry.ENUMERATE_SUB_KEYS)
	assertTrue("Bitwise mask check for registry.QUERY_VALUE", (combinedAccess&registry.QUERY_VALUE) == registry.QUERY_VALUE)

	// Assertion 3: registry.READ access mask includes registry.QUERY_VALUE
	assertTrue("registry.READ access mask includes registry.QUERY_VALUE", (registry.READ&registry.QUERY_VALUE) == registry.QUERY_VALUE)

	// Assertion 4: registry.ALL_ACCESS access mask includes registry.QUERY_VALUE
	assertTrue("registry.ALL_ACCESS access mask includes registry.QUERY_VALUE", (registry.ALL_ACCESS&registry.QUERY_VALUE) == registry.QUERY_VALUE)

	fmt.Println("All contract assertions passed successfully.")
}