def adapt_device_name()

in cookbooks/aws-parallelcluster-environment/files/default/ec2_udev_rules/manageVolume.py [0:0]

• 15 lines of code
• 5 McCabe index (conditional complexity)

def adapt_device_name(dev):
    # Translate the device name as provided by the OS to the one used by EC2
    # FIXME This approach could be broken in some OS variants, see  # pylint: disable=fixme
    # https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/nvme-ebs-volumes.html#identify-nvme-ebs-device
    #
    # A nosec comment is appended to the following line in order to disable the B605 check.
    # The only current use of this script in the repo sets the `dev` arg to the value of a device name
    # obtained via the OS.
    # Validation to sanitize the input argument and make it safe to use the function affected by B605
    validate_device_name(dev)
    if "/nvme" in dev:
        return (
            "/dev/"
            + os.popen("sudo /usr/local/sbin/parallelcluster-ebsnvme-id -u -b " + dev)  # nosec B605 nosemgrep
            .read()
            .strip()
        )
    elif "/hd" in dev:
        return dev.replace("hd", "sd")
    elif "/xvd" in dev:
        return dev.replace("xvd", "sd")
    else:
        return dev