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import sh
import unittest
import os.path
import time
class Qusbdual(unittest.TestCase):
params = None
__resultlist = None # resultlist is a python list of python dictionaries
def __init__(self, testname, testfunc, varlist):
self.params = varlist
super(Qusbdual, self).__init__(testfunc)
self._testMethodDoc = testname
if "repetitions" in varlist:
self.__repetitions = varlist["repetitions"]
else:
raise Exception('repetitions param inside Qusbdual must be defined')
self.__resultlist = []
def execute(self):
# check if file-as-filesystem exists
if not os.path.isfile('/var/lib/hwtest-files/mass-otg-test.img'):
self.fail("failed: Unable to find file-as-filesystem image.")
# generate mass storage gadget
p = sh.modprobe("g_mass_storage", "file=/var/lib/hwtest-files/mass-otg-test.img")
if p.exit_code != 0:
self.fail("failed: Unable to create a mass storage gadget.")
# wait to detect the new device
time.sleep(3)
# find the mass storage device
try:
p = sh.grep(sh.lsblk("-So", "NAME,VENDOR"), "Linux")
except sh.ErrorReturnCode:
sh.modprobe("-r", "g_mass_storage")
self.fail("failed: could not find any mass storage gadget")
device = p.stdout.decode().split(" ")[0]
# mount the mass storage gadget
sh.mkdir("-p", "/mnt/station_ramdisk/hdd_gadget")
p = sh.mount("-o", "ro", "/dev/" + device, "/mnt/station_ramdisk/hdd_gadget")
if p.exit_code != 0:
sh.modprobe("-r", "g_mass_storage")
self.fail("failed: Unable to mount the mass storage gadget.")
# execute test
for i in range(int(self.__repetitions)):
# copy files
try:
p = sh.cp("/mnt/station_ramdisk/hdd_gadget/usb-test.bin",
"/mnt/station_ramdisk/hdd_gadget/usb-test.bin.md5",
"/mnt/station_nfsdisk/")
except sh.ErrorReturnCode as e:
sh.umount("/mnt/station_ramdisk/hdd_gadget")
sh.rmdir("/mnt/station_ramdisk/hdd_gadget")
sh.modprobe("-r", "g_mass_storage")
self.fail("failed: Unable to copy files through USB.")
# check if the device is still mounted
if not os.path.ismount("/mnt/station_ramdisk/hdd_gadget"):
sh.rm("/mnt/station_ramdisk/hdd_gadget/*")
sh.rmdir("/mnt/station_ramdisk/hdd_gadget")
sh.modprobe("-r", "g_mass_storage")
self.fail("failed: USB device unmounted during/after copying files.")
# Check md5
try:
p = sh.md5sum("/mnt/station_nfsdisk/usb-test.bin")
except sh.ErrorReturnCode as e:
sh.umount("/mnt/station_ramdisk/hdd_gadget")
sh.rmdir("/mnt/station_ramdisk/hdd_gadget")
sh.modprobe("-r", "g_mass_storage")
self.fail("failed: Unable to calculate MD5 of the copied file.")
newmd5 = p.stdout.decode().split(" ")[0]
with open('/mnt/station_ramdisk/hdd_gadget/usb-test.bin.md5', 'r') as outfile:
oldmd5 = outfile.read().rstrip("\n")
outfile.close()
if newmd5 != oldmd5:
sh.umount("/mnt/station_ramdisk/hdd_gadget")
sh.rmdir("/mnt/station_ramdisk/hdd_gadget")
sh.modprobe("-r", "g_mass_storage")
self.fail("failed: MD5 check failed.")
# delete copied files
sh.rm("-f", "/mnt/station_nfsdisk/usb-test.bin", "/mnt/station_nfsdisk/usb-test.bin.md5")
# Finish
sh.umount("/mnt/station_ramdisk/hdd_gadget")
sh.rmdir("/mnt/station_ramdisk/hdd_gadget")
sh.modprobe("-r", "g_mass_storage")
def getresults(self):
return self.__resultlist
def gettextresult(self):
return ""
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