// DisableDirectIO - disables directio mode.
func DisableDirectIO(f *os.File) error {
	fd := f.Fd()
	_, err := unix.FcntlInt(fd, unix.F_NOCACHE, 0)
	return err
}

// AlignedBlock - pass through to directio implementation.
func AlignedBlock(blockSize int) []byte {
	return directio.AlignedBlock(blockSize)

	if err != nil {
		return err
	}
	flag &= ^(syscall.O_DIRECT)
	_, err = unix.FcntlInt(fd, unix.F_SETFL, flag)
	return err
}

// AlignedBlock - pass through to directio implementation.
func AlignedBlock(blockSize int) []byte {
	return directio.AlignedBlock(blockSize)

package kms

import (
	"context"
	"encoding"
	"encoding/json"
	"strconv"

	jsoniter "github.com/json-iterator/go"
	"github.com/minio/madmin-go/v3"
)

// conn represents a connection to a KMS implementation.
// It's implemented by the MinKMS and KES client wrappers
// and the static / single key KMS.
type conn interface {
	// Version returns version information about the KMS.
	//

	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/hash/sha256"
)

// ParseSecretKey parses s as <key-id>:<base64> and returns a
// KMS that uses s as builtin single key as KMS implementation.
func ParseSecretKey(s string) (*KMS, error) {
	v := strings.SplitN(s, ":", 2)
	if len(v) != 2 {
		return nil, errors.New("kms: invalid secret key format")
	}

	keyID, b64Key := v[0], v[1]

import (
	"crypto"

	"github.com/golang-jwt/jwt/v4"

	// Needed for SHA3 to work - See: https://golang.org/src/crypto/crypto.go?s=1034:1288
	_ "golang.org/x/crypto/sha3" // There is no SHA-3 FIPS-140 2 compliant implementation
)

// Specific instances for EC256 and company
var (
	SigningMethodES3256 *jwt.SigningMethodECDSA
	SigningMethodES3384 *jwt.SigningMethodECDSA
	SigningMethodES3512 *jwt.SigningMethodECDSA
)

type KMSLogger struct{}

// LogOnceIf is the implementation of LogOnceIf, accessible using the Logger interface
func (l KMSLogger) LogOnceIf(ctx context.Context, err error, id string, errKind ...interface{}) {
	logger.LogOnceIf(ctx, "kms", err, id, errKind...)
}

// LogIf is the implementation of LogIf, accessible using the Logger interface

	ExecObjectLayerTest(t, testListBucketsOrder)
}

// Tests validate the order of result of ListBuckets.
func testListBucketsOrder(obj ObjectLayer, instanceType string, t TestErrHandler) {
	// if implementation contains a map, order of map keys will vary.
	// this ensures they return in the same order each time.
	// add one and test exists.
	err := obj.MakeBucket(context.Background(), "bucket1", MakeBucketOptions{})

- Supports object locking/retention across source and destination buckets natively out of the box, unlike AWS S3.
- Simpler implementation than [AWS S3 Bucket Replication Config](https://docs.aws.amazon.com/AmazonS3/latest/dev/replication-add-config.html) with requirements such as IAM Role, AccessControlTranslation, Metrics and SourceSelectionCriteria are not needed with MinIO.

func errIsTierPermError(err error) bool {
	var tpErr tierPermErr
	return errors.As(err, &tpErr)
}

// remoteVersionID represents the version id of an object in the remote tier.
// Its usage is remote tier cloud implementation specific.
type remoteVersionID string

// newWarmBackend instantiates the tier type specific WarmBackend, runs
// checkWarmBackend on it.

// It randomly fetches an IP via custom LookupHost function and dials it by the given dial
// function. LookupHost may implement an internal DNS caching implementation, lookupHost
// input if nil then net.DefaultResolver.LookupHost is used.
//
// It dials one by one and returns first connected `net.Conn`.
// If it fails to dial all IPs from cache it returns first error. If no baseDialFunc