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#!/usr/bin/env python3
import os
import re
from glob import glob
rootdir_pattern = re.compile('^.*?/devices')
def device_state(name):
"""
Follow pmount policy to determine whether a device is removable or internal.
"""
with open('/sys/block/%s/device/block/%s/removable' % (name, name)) as f:
if f.read(1) == '1':
return 'removable'
path = rootdir_pattern.sub('', os.readlink('/sys/block/%s' % name))
hotplug_buses = ("usb", "ieee1394", "mmc", "pcmcia", "firewire")
for bus in hotplug_buses:
if os.path.exists('/sys/bus/%s' % bus):
for device_bus in os.listdir('/sys/bus/%s/devices' % bus):
device_link = rootdir_pattern.sub('', os.readlink(
'/sys/bus/%s/devices/%s' % (bus, device_bus)))
if re.search(device_link, path):
return 'removable'
return 'internal'
def usb_support(name, version):
"""
Check the USB specification number for both hub port and device
"""
path = rootdir_pattern.sub('', os.readlink('/sys/block/%s' % name))
# Remove the usb config.interface part of the path
m = re.match('((.*usb\d+).*\/)\d-[\d\.:\-]+\/.*', path)
if m:
device_path = m.group(1)
hub_port_path = m.group(2)
# Check the highest version of USB the device supports
with open('/sys/devices/%s/version' %device_path) as f:
if float(f.readline()) < version:
return 'unsupported'
# Check the highest version of USB the hub supports
with open('/sys/devices/%s/version' %hub_port_path) as f:
if float(f.readline()) < version:
return 'unsupported'
return 'supported'
return 'unsupported'
for path in glob('/sys/block/*/device'):
name = re.sub('.*/(.*?)/device', '\g<1>', path)
state = device_state(name)
usb2 = usb_support(name, 2.00)
usb3 = usb_support(name, 3.00)
# FIXME: Remove leading block device name when the requirements
# checking code in Checkbox allows it
print("""\
%(name)s_state: %(state)s
%(name)s_usb2: %(usb2)s
%(name)s_usb3: %(usb3)s
""" % {"name": name,
"state": state,
"usb2": usb2,
"usb3": usb3})
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