s3Error = checkRequestAuthType(ctx, r, policy.GetObjectAction, bucket, object)
		}
	}

	if s3Error != ErrNone {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
		return
	}

	objInfo, err := objectAPI.GetObjectInfo(ctx, bucket, object, opts)
	if err != nil {
		s3Error = checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, object)
		if s3Error == ErrNone {

			return
		}
	case authTypeSignedV2, authTypePresignedV2:
		if s3Error = isReqAuthenticatedV2(r); s3Error != ErrNone {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
			return
		}
	case authTypePresigned, authTypeSigned:
		if s3Error = reqSignatureV4Verify(r, globalSite.Region(), serviceS3); s3Error != ErrNone {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)

}

func joinErrs(errs []error) string {
	var s string
	for i := range s {
		if s != "" {
			s += ","
		}
		if errs[i] == nil {
			s += "<nil>"
		} else {
			s += errs[i].Error()
		}
	}
	return s
}

// EvalMetadataFn validates input objInfo and GetObjectInfo error and returns an updated metadata and replication decision if any
type EvalMetadataFn func(o *ObjectInfo, gerr error) (ReplicateDecision, error)

// EvalRetentionBypassFn validates input objInfo and GetObjectInfo error and returns an error if retention bypass is not allowed.
type EvalRetentionBypassFn func(o ObjectInfo, gerr error) error

			Number: partNumbers[pidx],
			Error: InvalidPart{
				PartNumber: partNumbers[pidx],
			}.Error(),
		}
	}
	return partInfosInQuorum, nil
}

func objPartToPartErr(part ObjectPartInfo) error {
	if strings.Contains(part.Error, "file not found") {
		return InvalidPart{PartNumber: part.Number}
	}
	if strings.Contains(part.Error, "Specified part could not be found") {