code.vuplus.com Git - vuplus_dvbapp/blob - lib/python/Components/Harddisk.py

   1 from os import system, listdir, statvfs, popen, makedirs, stat, major, minor, path, access
   2
   3 from Tools.Directories import SCOPE_HDD, resolveFilename, fileExists
   4
   5 from Tools.CList import CList
   6 from SystemInfo import SystemInfo
   7 import time
   8 from Components.Console import Console
   9 import os
  10 import glob
  11
  12 def MajorMinor(path):
  13         rdev = stat(path).st_rdev
  14         return (major(rdev),minor(rdev))
  15
  16 def readFile(filename):
  17         file = open(filename)
  18         data = file.read().strip()
  19         file.close()
  20         return data
  21
  22 def getProcMounts():
  23         try:
  24                 mounts = open("/proc/mounts", 'r')
  25         except IOError, ex:
  26                 print "[Harddisk] Failed to open /proc/mounts", ex
  27                 return []
  28         result = [line.strip().split(' ') for line in mounts]
  29         for item in result:
  30                 # Spaces are encoded as \040 in mounts
  31                 item[1] = item[1].replace('\\040', ' ')
  32         return result
  33
  34 def CheckSfdiskVer():
  35         cmd = 'sfdisk --version'
  36         lines = popen(cmd).readlines()
  37         for l in lines:
  38                 if l.find("sfdisk from util-linux") != -1:
  39                         ver = l.split()[-1].strip()
  40                         break
  41         try:
  42                 vs = ver.split('.')
  43                 if len(vs) > 2:
  44                         ver = '.'.join(vs[:2])
  45
  46                 ver = float(ver)
  47         except:
  48                 print "[CheckSfdiskVer] check parted version Failed!"
  49                 return 0
  50         return ver
  51
  52 def enableUdevEvent(enable = True):
  53         if enable:
  54                 option = '--start-exec-queue'
  55         else:
  56                 option = '--stop-exec-queue'
  57         cmd = "udevadm control %s" % option
  58         print "CMD : ", cmd
  59         system(cmd)
  60
  61 def findMountPoint(path):
  62         'Example: findMountPoint("/media/hdd/some/file") returns "/media/hdd"'
  63         path = os.path.abspath(path)
  64         while not os.path.ismount(path):
  65                 path = os.path.dirname(path)
  66         return path
  67
  68 def getDeviceFile(dev_path):
  69         for parts in getProcMounts():
  70                 if os.path.realpath(parts[1]).startswith(dev_path):
  71                         return parts[0]
  72
  73 def getMountPath(mountPath):
  74         mountPath = os.path.realpath(mountPath)
  75         while not os.path.ismount(mountPath):
  76                 mountPath = os.path.dirname(mountPath)
  77
  78         return mountPath
  79
  80 def getDeviceInterface(mountPath):
  81         mountPath = getMountPath(mountPath)
  82
  83         if mountPath == '/':
  84                 return None
  85
  86         from Components.Harddisk import getDeviceFile
  87         dev = getDeviceFile(mountPath)
  88
  89         if dev and dev.startswith("/dev/sd"):
  90                 dev = os.path.basename(dev)
  91                 phyPath = os.path.realpath('/sys/block/' + dev[:3])
  92
  93                 # check usb
  94                 for x in glob.glob("/sys/bus/usb/devices/usb*"):
  95                         if phyPath.find(os.path.realpath(x)) != -1:
  96                                 from Tools.HardwareInfo import HardwareInfo
  97                                 if (HardwareInfo().get_vu_device_name() == "zero4k") and (phyPath.find("f0b00500.ehci_v2/usb2/2-1") != -1):
  98                                         return "ata"
  99                                 else:
 100                                         return "usb"
 101
 102                 # check ata
 103                 if phyPath.find("/ata") != -1:
 104                         return "ata"
 105
 106         return None
 107
 108 def isUsbStorage(dirname):
 109         return getDeviceInterface(dirname) in (None, "usb")
 110
 111 DEVTYPE_UDEV = 0
 112 DEVTYPE_DEVFS = 1
 113
 114 class Harddisk:
 115         def __init__(self, device):
 116                 self.device = device
 117
 118                 if access("/dev/.udev", 0):
 119                         self.type = DEVTYPE_UDEV
 120                 elif access("/dev/.devfsd", 0):
 121                         self.type = DEVTYPE_DEVFS
 122                 else:
 123                         print "Unable to determine structure of /dev"
 124
 125                 self.max_idle_time = 0
 126                 self.idle_running = False
 127                 self.timer = None
 128
 129                 self.dev_path = ''
 130                 self.disk_path = ''
 131                 self.mount_path = None
 132                 self.mount_device = None
 133                 self.phys_path = path.realpath(self.sysfsPath('device'))
 134
 135                 if self.type == DEVTYPE_UDEV:
 136                         self.dev_path = '/dev/' + self.device
 137                         self.disk_path = self.dev_path
 138
 139                 elif self.type == DEVTYPE_DEVFS:
 140                         tmp = readFile(self.sysfsPath('dev')).split(':')
 141                         s_major = int(tmp[0])
 142                         s_minor = int(tmp[1])
 143                         for disc in listdir("/dev/discs"):
 144                                 dev_path = path.realpath('/dev/discs/' + disc)
 145                                 disk_path = dev_path + '/disc'
 146                                 try:
 147                                         rdev = stat(disk_path).st_rdev
 148                                 except OSError:
 149                                         continue
 150                                 if s_major == major(rdev) and s_minor == minor(rdev):
 151                                         self.dev_path = dev_path
 152                                         self.disk_path = disk_path
 153                                         break
 154
 155                 print "new Harddisk", self.device, '->', self.dev_path, '->', self.disk_path
 156                 self.startIdle()
 157
 158         def __lt__(self, ob):
 159                 return self.device < ob.device
 160
 161         def partitionPath(self, n):
 162                 if self.type == DEVTYPE_UDEV:
 163                         return self.dev_path + n
 164                 elif self.type == DEVTYPE_DEVFS:
 165                         return self.dev_path + '/part' + n
 166
 167         def sysfsPath(self, filename):
 168                 return path.realpath('/sys/block/' + self.device + '/' + filename)
 169
 170         def stop(self):
 171                 if self.timer:
 172                         self.timer.stop()
 173                         self.timer.callback.remove(self.runIdle)
 174
 175         def bus(self):
 176                 # CF (7025 specific)
 177                 if self.type == DEVTYPE_UDEV:
 178                         ide_cf = False  # FIXME
 179                 elif self.type == DEVTYPE_DEVFS:
 180                         ide_cf = self.device[:2] == "hd" and "host0" not in self.dev_path
 181
 182                 internal = "pci" in self.phys_path
 183
 184                 if ide_cf:
 185                         ret = "External (CF)"
 186                 elif internal:
 187                         ret = "Internal"
 188                 else:
 189                         ret = "External"
 190                 return ret
 191
 192         def diskSize(self):
 193                 try:
 194                         line = readFile(self.sysfsPath('size'))
 195                 except:
 196                         harddiskmanager.removeHotplugPartition(self.device)
 197                         print "error remove",self.device
 198                         return -1
 199                 try:
 200                         cap = int(line)
 201                 except:
 202                         return 0;
 203                 return cap / 1000 * 512 / 1000
 204
 205         def capacity(self):
 206                 cap = self.diskSize()
 207                 if cap == 0:
 208                         return ""
 209                 return "%d.%03d GB" % (cap/1000, cap%1000)
 210
 211         def model(self):
 212                 try:
 213                         if self.device[:2] == "hd":
 214                                 return readFile('/proc/ide/' + self.device + '/model')
 215                         elif self.device[:2] == "sd":
 216                                 vendor = readFile(self.sysfsPath('device/vendor'))
 217                                 model = readFile(self.sysfsPath('device/model'))
 218                                 return vendor + '(' + model + ')'
 219                         else:
 220                                 assert False, "no hdX or sdX"
 221                 except:
 222                         harddiskmanager.removeHotplugPartition(self.device)
 223                         print "error remove",self.device
 224                         return -1
 225
 226         def free(self):
 227                 try:
 228                         mounts = open("/proc/mounts")
 229                 except IOError:
 230                         return -1
 231
 232                 lines = mounts.readlines()
 233                 mounts.close()
 234
 235                 for line in lines:
 236                         parts = line.strip().split(" ")
 237                         real_path = path.realpath(parts[0])
 238                         if not real_path[-1].isdigit():
 239                                 continue
 240                         try:
 241                                 if MajorMinor(real_path) == MajorMinor(self.partitionPath(real_path[-1])):
 242                                         stat = statvfs(parts[1])
 243                                         return stat.f_bfree/1000 * stat.f_bsize/1000
 244                         except OSError:
 245                                 pass
 246                 return -1
 247
 248         def numPartitions(self):
 249                 numPart = -1
 250                 if self.type == DEVTYPE_UDEV:
 251                         try:
 252                                 devdir = listdir('/dev')
 253                         except OSError:
 254                                 return -1
 255                         for filename in devdir:
 256                                 if filename.startswith(self.device):
 257                                         numPart += 1
 258
 259                 elif self.type == DEVTYPE_DEVFS:
 260                         try:
 261                                 idedir = listdir(self.dev_path)
 262                         except OSError:
 263                                 return -1
 264                         for filename in idedir:
 265                                 if filename.startswith("disc"):
 266                                         numPart += 1
 267                                 if filename.startswith("part"):
 268                                         numPart += 1
 269                 return numPart
 270
 271         def mountDevice(self):
 272                 for parts in getProcMounts():
 273                         if path.realpath(parts[0]).startswith(self.dev_path):
 274                                 self.mount_device = parts[0]
 275                                 self.mount_path = parts[1]
 276                                 return parts[1]
 277
 278         def findMount(self):
 279                 if self.mount_path is None:
 280                         return self.mountDevice()
 281                 return self.mount_path
 282
 283         def unmount(self):
 284                 try:
 285                         mounts = open("/proc/mounts")
 286                 except IOError:
 287                         return -1
 288
 289                 lines = mounts.readlines()
 290                 mounts.close()
 291
 292                 cmd = "umount"
 293
 294                 for line in lines:
 295                         parts = line.strip().split(" ")
 296                         real_path = path.realpath(parts[0])
 297                         if not real_path[-1].isdigit():
 298                                 continue
 299                         try:
 300                                 if MajorMinor(real_path) == MajorMinor(self.partitionPath(real_path[-1])):
 301                                         cmd = ' ' . join([cmd, parts[1]])
 302                                         break
 303                         except OSError:
 304                                 pass
 305
 306                 res = system(cmd)
 307                 print "CMD : ", cmd
 308                 return (res >> 8)
 309
 310         def checkPartionPath(self, path):
 311                 import time, os
 312                 for i in range(1,10):
 313                         if os.path.exists(path):
 314                                 return True
 315                         time.sleep(1)
 316                 return False
 317
 318         def updatePartition(self):
 319                 sfdiskVer = CheckSfdiskVer()
 320                 if sfdiskVer < 2.26: # sfdisk -R option is deprecated at sfdiskVer >= 2.26
 321                         cmd = 'sfdisk -R %s; sleep 5' % (self.disk_path)
 322                 elif path.exists('/usr/sbin/partprobe'):
 323                         cmd = 'partprobe %s; sleep 5' % (self.disk_path)
 324                 elif path.exists('/usr/sbin/partx'):
 325                         cmd = 'partx -u %s' % (self.disk_path)
 326                 else:
 327                         return -1
 328
 329                 print "CMD : ", cmd
 330                 res = system(cmd)
 331
 332                 return (res >> 8)
 333
 334         def createPartition(self):
 335                 def CheckPartedVer():
 336                         cmd = 'parted --version'
 337                         lines = popen(cmd).readlines()
 338                         for l in lines:
 339                                 if l.find("parted (GNU parted)") != -1:
 340                                         ver = l.split()[3].strip()
 341                                         break
 342                         try:
 343                                 ver = float(ver)
 344                         except:
 345                                 print "[CheckPartedVer] check parted version Failed!"
 346                                 return 0
 347                         return ver
 348
 349                 disk_size = self.diskSize()
 350
 351                 if disk_size > 2.2 * 1000 * 1000: # if 2.2 TB
 352                         setAlign = ""
 353                         partedVer = CheckPartedVer()
 354                         if partedVer >= 2.1: # align option is supported in version 2.1 or later
 355                                 setAlign = "--align optimal"
 356                         cmd = 'parted %s %s --script mklabel gpt mkpart disk ext2 0%% 100%%' % ( setAlign, self.disk_path )
 357
 358                 else:
 359                         sfdiskVer = CheckSfdiskVer()
 360                         if sfdiskVer <= 2.21:
 361                                 cmd = 'printf "8,\n;0,0\n;0,0\n;0,0\ny\n" | sfdisk -f -uS ' + self.disk_path
 362                         else:
 363                                 cmd = 'printf "8,\nquit\nY\n" | sfdisk -f -uS ' + self.disk_path
 364
 365                 print "CMD : ", cmd
 366                 res = system(cmd)
 367
 368                 if not self.checkPartionPath(self.partitionPath("1")):
 369                         print "no exist : ", self.partitionPath("1")
 370                         return 1
 371                 return (res >> 8)
 372
 373         def mkfs(self):
 374                 cmd = "mkfs.ext3 "
 375                 if self.diskSize() > 4 * 1024:
 376                         cmd += "-T largefile "
 377                 cmd += "-m0 -O dir_index " + self.partitionPath("1")
 378                 print "CMD : ", cmd
 379                 res = system(cmd)
 380                 return (res >> 8)
 381
 382         def mount(self):
 383                 try:
 384                         fstab = open("/etc/fstab")
 385                 except IOError:
 386                         return -1
 387
 388                 lines = fstab.readlines()
 389                 fstab.close()
 390
 391                 res = -1
 392                 mount_point = None
 393                 for line in lines:
 394                         parts = line.strip().split(" ")
 395                         real_path = path.realpath(parts[0])
 396                         if not real_path[-1].isdigit():
 397                                 continue
 398                         try:
 399                                 if MajorMinor(real_path) == MajorMinor(self.partitionPath(real_path[-1])):
 400                                         mount_point = parts[0]
 401                                         break
 402                         except OSError:
 403                                 pass
 404
 405                 if mount_point is None:
 406                         return 0
 407
 408                 cmd = "mount -t ext3 " + mount_point
 409                 print "CMD : ", cmd
 410                 res = system(cmd)
 411
 412                 if (res >> 8) != 0:
 413                         return -3
 414
 415                 if self.createMovieFolder() != 0:
 416                         return -4
 417
 418                 return 0
 419
 420         def createMovieFolder(self):
 421                 try:
 422                         if not fileExists("/hdd", 0):
 423                                 print "not found /hdd"
 424                                 system("ln -s /media/hdd /hdd")
 425
 426                         makedirs(resolveFilename(SCOPE_HDD))
 427                 except OSError:
 428                         return -1
 429                 return 0
 430
 431         def fsck(self):
 432                 # We autocorrect any failures
 433                 # TODO: we could check if the fs is actually ext3
 434                 cmd = "fsck.ext3 -f -p " + self.partitionPath("1")
 435                 res = system(cmd)
 436                 return (res >> 8)
 437
 438         def killPartition(self, n):
 439                 part = self.partitionPath(n)
 440
 441                 if access(part, 0):
 442                         cmd = 'dd bs=512 count=3 if=/dev/zero of=' + part
 443                         print "CMD : ", cmd
 444                         res = system(cmd)
 445                 else:
 446                         res = 0
 447
 448                 return (res >> 8)
 449
 450         errorList = [ _("Everything is fine"), _("Creating partition failed"), _("Mkfs failed"), _("Mount failed"), _("Create movie folder failed"), _("Fsck failed"), _("Please Reboot"), _("Filesystem contains uncorrectable errors"), _("Unmount failed"), _("partx failed")]
 451
 452         def initialize(self):
 453                 enableUdevEvent(False)
 454                 self.unmount()
 455
 456                 # Udev tries to mount the partition immediately if there is an
 457                 # old filesystem on it when fdisk reloads the partition table.
 458                 # To prevent that, we overwrite the first 3 sectors of the
 459                 # partition, if the partition existed before. That's enough for
 460                 # ext3 at least.
 461                 self.killPartition("1")
 462
 463                 if self.updatePartition() != 0:
 464                         res = -9
 465
 466                 elif self.createPartition() != 0:
 467                         res = -1
 468
 469                 elif self.updatePartition() != 0:
 470                         res = -9
 471
 472                 elif self.mkfs() != 0:
 473                         res = -2
 474
 475                 else:
 476                         res = self.mount()
 477
 478                 enableUdevEvent(True)
 479                 return res
 480
 481         def check(self):
 482                 self.unmount()
 483
 484                 res = self.fsck()
 485                 if res & 2 == 2:
 486                         return -6
 487
 488                 if res & 4 == 4:
 489                         return -7
 490
 491                 if res != 0 and res != 1:
 492                         # A sum containing 1 will also include a failure
 493                         return -5
 494
 495                 if self.mount() != 0:
 496                         return -3
 497
 498                 return 0
 499
 500         def getDeviceDir(self):
 501                 return self.dev_path
 502
 503         def getDeviceName(self):
 504                 return self.disk_path
 505
 506         # the HDD idle poll daemon.
 507         # as some harddrives have a buggy standby timer, we are doing this by hand here.
 508         # first, we disable the hardware timer. then, we check every now and then if
 509         # any access has been made to the disc. If there has been no access over a specifed time,
 510         # we set the hdd into standby.
 511         def readStats(self):
 512                 try:
 513                         l = open("/sys/block/%s/stat" % self.device).read()
 514                 except IOError:
 515                         return -1,-1
 516                 (nr_read, _, _, _, nr_write) = l.split()[:5]
 517                 return int(nr_read), int(nr_write)
 518
 519         def startIdle(self):
 520                 self.last_access = time.time()
 521                 self.last_stat = 0
 522                 self.is_sleeping = False
 523                 from enigma import eTimer
 524
 525                 # disable HDD standby timer
 526                 Console().ePopen(("hdparm", "hdparm", "-S0", self.disk_path))
 527                 self.timer = eTimer()
 528                 self.timer.callback.append(self.runIdle)
 529                 self.idle_running = True
 530                 self.setIdleTime(self.max_idle_time) # kick the idle polling loop
 531
 532         def runIdle(self):
 533                 if not self.max_idle_time:
 534                         return
 535                 t = time.time()
 536
 537                 idle_time = t - self.last_access
 538
 539                 stats = self.readStats()
 540
 541                 if stats == -1:
 542                         self.setIdleTime(0)
 543                         return
 544                 print "nr_read", stats[0], "nr_write", stats[1]
 545                 l = sum(stats)
 546                 print "sum", l, "prev_sum", self.last_stat
 547
 548                 if l != self.last_stat and l >= 0: # access
 549                         print "hdd was accessed since previous check!"
 550                         self.last_stat = l
 551                         self.last_access = t
 552                         idle_time = 0
 553                         self.is_sleeping = False
 554                 else:
 555                         print "hdd IDLE!"
 556
 557                 print "[IDLE]", idle_time, self.max_idle_time, self.is_sleeping
 558                 if idle_time >= self.max_idle_time and not self.is_sleeping:
 559                         self.setSleep()
 560                         self.is_sleeping = True
 561
 562         def setSleep(self):
 563                 Console().ePopen(("hdparm", "hdparm", "-y", self.disk_path))
 564
 565         def setIdleTime(self, idle):
 566                 self.max_idle_time = idle
 567                 if self.idle_running:
 568                         if not idle:
 569                                 self.timer.stop()
 570                         else:
 571                                 self.timer.start(idle * 100, False)  # poll 10 times per period.
 572
 573         def isSleeping(self):
 574                 return self.is_sleeping
 575
 576 class Partition:
 577         def __init__(self, mountpoint, device = None, description = "", force_mounted = False):
 578                 self.mountpoint = mountpoint
 579                 self.description = description
 580                 self.force_mounted = force_mounted
 581                 self.is_hotplug = force_mounted # so far; this might change.
 582                 self.device = device
 583
 584         def stat(self):
 585                 return statvfs(self.mountpoint)
 586
 587         def free(self):
 588                 try:
 589                         s = self.stat()
 590                         return s.f_bavail * s.f_bsize
 591                 except OSError:
 592                         return None
 593
 594         def total(self):
 595                 try:
 596                         s = self.stat()
 597                         return s.f_blocks * s.f_bsize
 598                 except OSError:
 599                         return None
 600
 601         def mounted(self):
 602                 # THANK YOU PYTHON FOR STRIPPING AWAY f_fsid.
 603                 # TODO: can os.path.ismount be used?
 604                 if self.force_mounted:
 605                         return True
 606
 607                 try:
 608                         mounts = open("/proc/mounts")
 609                 except IOError:
 610                         return False
 611
 612                 lines = mounts.readlines()
 613                 mounts.close()
 614
 615                 for line in lines:
 616                         if line.split(' ')[1] == self.mountpoint:
 617                                 return True
 618                 return False
 619
 620 DEVICEDB_SR = \
 621         {"dm8000":
 622                 {
 623                         "/devices/pci0000:01/0000:01:00.0/host0/target0:0:0/0:0:0:0": _("DVD Drive"),
 624                         "/devices/pci0000:01/0000:01:00.0/host1/target1:0:0/1:0:0:0": _("DVD Drive"),
 625                         "/devices/platform/brcm-ehci-1.1/usb2/2-1/2-1:1.0/host3/target3:0:0/3:0:0:0": _("DVD Drive"),
 626                 },
 627         "dm800":
 628         {
 629         },
 630         "dm7025":
 631         {
 632         }
 633         }
 634
 635 DEVICEDB = \
 636         {"dm8000":
 637                 {
 638                         "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.1/1-1.1:1.0": _("Front USB Slot"),
 639                         "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.2/1-1.2:1.0": _("Back, upper USB Slot"),
 640                         "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.3/1-1.3:1.0": _("Back, lower USB Slot"),
 641                         "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.1/1-1.1:1.0": _("Front USB Slot"),
 642                         "/devices/platform/brcm-ehci-1.1/usb2/2-1/2-1:1.0/": _("Internal USB Slot"),
 643                         "/devices/platform/brcm-ohci-1.1/usb4/4-1/4-1:1.0/": _("Internal USB Slot"),
 644                 },
 645         "dm800":
 646         {
 647                 "/devices/platform/brcm-ehci.0/usb1/1-2/1-2:1.0": "Upper USB Slot",
 648                 "/devices/platform/brcm-ehci.0/usb1/1-1/1-1:1.0": "Lower USB Slot",
 649         },
 650         "dm7025":
 651         {
 652                 "/devices/pci0000:00/0000:00:14.1/ide1/1.0": "CF Card Slot", #hdc
 653                 "/devices/pci0000:00/0000:00:14.1/ide0/0.0": "Internal Harddisk"
 654         }
 655         }
 656
 657 class HarddiskManager:
 658         def __init__(self):
 659                 self.hdd = [ ]
 660                 self.cd = ""
 661                 self.partitions = [ ]
 662                 self.devices_scanned_on_init = [ ]
 663
 664                 self.on_partition_list_change = CList()
 665
 666                 self.enumerateBlockDevices()
 667
 668                 # currently, this is just an enumeration of what's possible,
 669                 # this probably has to be changed to support automount stuff.
 670                 # still, if stuff is mounted into the correct mountpoints by
 671                 # external tools, everything is fine (until somebody inserts
 672                 # a second usb stick.)
 673                 p = [
 674                                         ("/media/hdd", _("Harddisk")),
 675                                         ("/media/card", _("Card")),
 676                                         ("/media/cf", _("Compact Flash")),
 677                                         ("/media/mmc1", _("MMC Card")),
 678                                         ("/media/net", _("Network Mount")),
 679                                         ("/media/ram", _("Ram Disk")),
 680                                         ("/media/usb", _("USB Stick")),
 681                                         ("/", _("Internal Flash"))
 682                                 ]
 683
 684                 self.partitions.extend([ Partition(mountpoint = x[0], description = x[1]) for x in p ])
 685
 686         def getBlockDevInfo(self, blockdev):
 687                 devpath = "/sys/block/" + blockdev
 688                 error = False
 689                 removable = False
 690                 blacklisted = False
 691                 is_cdrom = False
 692                 partitions = []
 693                 try:
 694                         removable = bool(int(readFile(devpath + "/removable")))
 695                         dev = int(readFile(devpath + "/dev").split(':')[0])
 696                         if dev in (7, 31, 179): # loop, mtdblock, mmcblock
 697                                 blacklisted = True
 698                         if blockdev[0:2] == 'sr':
 699                                 is_cdrom = True
 700                         if blockdev[0:2] == 'hd':
 701                                 try:
 702                                         media = readFile("/proc/ide/%s/media" % blockdev)
 703                                         if "cdrom" in media:
 704                                                 is_cdrom = True
 705                                 except IOError:
 706                                         error = True
 707                         # check for partitions
 708                         if not is_cdrom:
 709                                 for partition in listdir(devpath):
 710                                         if partition[0:len(blockdev)] != blockdev:
 711                                                 continue
 712                                         partitions.append(partition)
 713                         else:
 714                                 self.cd = blockdev
 715                 except IOError:
 716                         error = True
 717                 # check for medium
 718                 medium_found = True
 719                 try:
 720                         open("/dev/" + blockdev).close()
 721                 except IOError, err:
 722                         if err.errno == 159: # no medium present
 723                                 medium_found = False
 724
 725                 return error, blacklisted, removable, is_cdrom, partitions, medium_found
 726
 727         def enumerateBlockDevices(self):
 728                 print "enumerating block devices..."
 729                 for blockdev in listdir("/sys/block"):
 730                         error, blacklisted, removable, is_cdrom, partitions, medium_found = self.addHotplugPartition(blockdev)
 731                         if not error and not blacklisted:
 732                                 if medium_found:
 733                                         for part in partitions:
 734                                                 self.addHotplugPartition(part)
 735                                 self.devices_scanned_on_init.append((blockdev, removable, is_cdrom, medium_found))
 736
 737         def getAutofsMountpoint(self, device):
 738                 return "/autofs/%s/" % (device)
 739
 740
 741         def is_hard_mounted(self, device):
 742                 mounts = file('/proc/mounts').read().split('\n')
 743                 for x in mounts:
 744                         if x.find('/autofs') == -1 and x.find(device) != -1:
 745                                 return True
 746                 return False
 747
 748         def getMountpoint(self, device):
 749                 dev = "/dev/%s" % device
 750                 for item in getProcMounts():
 751                         if item[0] == dev and item[1].find('/autofs') == -1:
 752                                 return item[1]
 753                 return None
 754
 755         def addHotplugPartition(self, device, physdev = None):
 756                 if not physdev:
 757                         dev, part = self.splitDeviceName(device)
 758                         try:
 759                                 physdev = path.realpath('/sys/block/' + dev + '/device')[4:]
 760                         except OSError:
 761                                 physdev = dev
 762                                 print "couldn't determine blockdev physdev for device", device
 763
 764                 error, blacklisted, removable, is_cdrom, partitions, medium_found = self.getBlockDevInfo(device)
 765                 print "found block device '%s':" % device,
 766
 767                 if blacklisted:
 768                         print "blacklisted"
 769                 else:
 770                         if error:
 771                                 print "error querying properties"
 772                         elif not medium_found:
 773                                 print "no medium"
 774                         else:
 775                                 print "ok, removable=%s, cdrom=%s, partitions=%s" % (removable, is_cdrom, partitions)
 776
 777                         l = len(device)
 778                         if l:
 779                                 # see if this is a harddrive
 780                                 if not device[l-1].isdigit() and not removable and not is_cdrom:
 781                                         self.hdd.append(Harddisk(device))
 782                                         self.hdd.sort()
 783                                         SystemInfo["Harddisk"] = len(self.hdd) > 0
 784
 785                                 if not removable or medium_found:
 786                                         # device is the device name, without /dev
 787                                         # physdev is the physical device path, which we (might) use to determine the userfriendly name
 788                                         description = self.getUserfriendlyDeviceName(device, physdev)
 789                                         p = Partition(mountpoint = self.getAutofsMountpoint(device), description = description, force_mounted = True, device = device)
 790                                         self.partitions.append(p)
 791                                         self.on_partition_list_change("add", p)
 792
 793                 return error, blacklisted, removable, is_cdrom, partitions, medium_found
 794
 795         def removeHotplugPartition(self, device):
 796                 for x in self.partitions[:]:
 797                         if x.device == device:
 798                                 self.partitions.remove(x)
 799                                 if x.mountpoint:
 800                                         self.on_partition_list_change("remove", x)
 801                 l = len(device)
 802                 if l and not device[l-1].isdigit():
 803                         for hdd in self.hdd:
 804                                 if hdd.device == device:
 805                                         hdd.stop()
 806                                         self.hdd.remove(hdd)
 807                                         break
 808                         SystemInfo["Harddisk"] = len(self.hdd) > 0
 809
 810         def HDDCount(self):
 811                 return len(self.hdd)
 812
 813         def HDDList(self):
 814                 list = [ ]
 815                 for hd in self.hdd:
 816                         if hd.model() == -1:
 817                                 continue
 818                         hdd = hd.model() + " - " + hd.bus()
 819                         cap = hd.capacity()
 820                         if cap != "":
 821                                 hdd += " (" + cap + ")"
 822                         list.append((hdd, hd))
 823                 return list
 824
 825         def getCD(self):
 826                 return self.cd
 827
 828         def getMountedPartitions(self, onlyhotplug = False):
 829                 parts = [x for x in self.partitions if (x.is_hotplug or not onlyhotplug) and x.mounted() and x.mountpoint]
 830                 devs = set([x.device for x in parts])
 831                 for devname in devs.copy():
 832                         if not devname:
 833                                 continue
 834                         dev, part = self.splitDeviceName(devname)
 835                         if part and dev in devs: # if this is a partition and we still have the wholedisk, remove wholedisk
 836                                 devs.remove(dev)
 837
 838                 # remove duplicate device
 839                 no_force_mounted_list = [x.mountpoint for x in self.partitions if not x.force_mounted]
 840                 for x in parts:
 841                         if x.force_mounted:
 842                                 mp = self.getMountpoint(x.device)
 843                                 if mp and mp in no_force_mounted_list:
 844                                         devs.remove(x.device)
 845
 846                 # return all devices which are not removed due to being a wholedisk when a partition exists
 847                 return [x for x in parts if not x.device or x.device in devs]
 848
 849         def getLabelFromDevName(self, dev):
 850                 data = None
 851                 try:
 852                         data = os.popen("e2label %s" % dev).read().strip()
 853                         if not data:
 854                                 data = None
 855                 except:
 856                         data = None
 857
 858                 return data
 859
 860         def splitDeviceName(self, devname):
 861                 # this works for: sdaX, hdaX, sr0 (which is in fact dev="sr0", part=""). It doesn't work for other names like mtdblock3, but they are blacklisted anyway.
 862                 dev = devname[:3]
 863                 part = devname[3:]
 864                 for p in part:
 865                         if not p.isdigit():
 866                                 return devname, 0
 867                 return dev, part and int(part) or 0
 868
 869         def getUserfriendlyDeviceName(self, dev, phys):
 870                 label = self.getLabelFromDevName("/dev/" + dev)
 871                 dev, part = self.splitDeviceName(dev)
 872                 description = "External Storage %s" % dev
 873                 have_model_descr = False
 874
 875                 if label:
 876                         description = label
 877                         have_model_descr = True
 878                 else:
 879                         try:
 880                                 description = readFile("/sys" + phys + "/model")
 881                                 have_model_descr = True
 882                         except IOError, s:
 883                                 print "couldn't read model: ", s
 884                 from Tools.HardwareInfo import HardwareInfo
 885                 if dev.find('sr') == 0 and dev[2].isdigit():
 886                         devicedb = DEVICEDB_SR
 887                 else:
 888                         devicedb = DEVICEDB
 889                 for physdevprefix, pdescription in devicedb.get(HardwareInfo().device_name,{}).items():
 890                         if phys.startswith(physdevprefix):
 891                                 if have_model_descr:
 892                                         description = pdescription + ' - ' + description
 893                                 else:
 894                                         description = pdescription
 895                 # not wholedisk and not partition 1
 896                 if part and part != 1:
 897                         description += " (Partition %d)" % part
 898                 return description
 899
 900         def addMountedPartition(self, device, desc):
 901                 already_mounted = False
 902                 for x in self.partitions[:]:
 903                         if x.mountpoint == device:
 904                                 already_mounted = True
 905                 if not already_mounted:
 906                         self.partitions.append(Partition(mountpoint = device, description = desc))
 907
 908         def removeMountedPartition(self, mountpoint):
 909                 for x in self.partitions[:]:
 910                         if x.mountpoint == mountpoint:
 911                                 self.partitions.remove(x)
 912                                 self.on_partition_list_change("remove", x)
 913
 914 harddiskmanager = HarddiskManager()