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

   1 from os import system, listdir, statvfs, popen, makedirs, readlink, stat, major, minor
   2 from Tools.Directories import SCOPE_HDD, resolveFilename
   3 from Tools.CList import CList
   4 from SystemInfo import SystemInfo
   5 import string, time
   6 from Components.Console import Console
   7
   8 def tryOpen(filename):
   9         try:
  10                 procFile = open(filename)
  11         except IOError:
  12                 return ""
  13         return procFile
  14
  15 class Harddisk:
  16         def __init__(self, device):
  17                 self.device = device
  18                 procfile = tryOpen("/sys/block/"+self.device+"/dev")
  19                 tmp = procfile.readline().split(':')
  20                 s_major = int(tmp[0])
  21                 s_minor = int(tmp[1])
  22                 self.max_idle_time = 0
  23                 self.idle_running = False
  24                 for disc in listdir("/dev/discs"):
  25                         path = readlink('/dev/discs/'+disc)
  26                         devidex = '/dev/discs/'+disc+'/'
  27                         devidex2 = '/dev'+path[2:]+'/'
  28                         disc = devidex2+'disc'
  29                         ret = stat(disc).st_rdev
  30                         if s_major == major(ret) and s_minor == minor(ret):
  31                                 self.devidex = devidex
  32                                 self.devidex2 = devidex2
  33                                 print "new Harddisk", device, '->', self.devidex, '->', self.devidex2
  34                                 self.startIdle()
  35                                 break
  36
  37         def __lt__(self, ob):
  38                 return self.device < ob.device
  39
  40         def bus(self):
  41                 ide_cf = self.device.find("hd") == 0 and self.devidex2.find("host0") == -1 # 7025 specific
  42                 internal = self.device.find("hd") == 0
  43                 if ide_cf:
  44                         ret = "External (CF)"
  45                 elif internal:
  46                         ret = "Internal"
  47                 else:
  48                         ret = "External"
  49                 return ret
  50
  51         def diskSize(self):
  52                 procfile = tryOpen("/sys/block/"+self.device+"/size")
  53                 if procfile == "":
  54                         return 0
  55                 line = procfile.readline()
  56                 procfile.close()
  57                 try:
  58                         cap = int(line)
  59                 except:
  60                         return 0;
  61                 return cap / 1000 * 512 / 1000
  62
  63         def capacity(self):
  64                 cap = self.diskSize()
  65                 if cap == 0:
  66                         return ""
  67                 return "%d.%03d GB" % (cap/1024, cap%1024)
  68
  69         def model(self):
  70                 if self.device.find("hd") == 0:
  71                         procfile = tryOpen("/proc/ide/"+self.device+"/model")
  72                         if procfile == "":
  73                                 return ""
  74                         line = procfile.readline()
  75                         procfile.close()
  76                         return line.strip()
  77                 elif self.device.find("sd") == 0:
  78                         procfile = tryOpen("/sys/block/"+self.device+"/device/vendor")
  79                         if procfile == "":
  80                                 return ""
  81                         vendor = procfile.readline().strip()
  82                         procfile.close()
  83                         procfile = tryOpen("/sys/block/"+self.device+"/device/model")
  84                         model = procfile.readline().strip()
  85                         return vendor+'('+model+')'
  86                 else:
  87                         assert False, "no hdX or sdX"
  88
  89         def free(self):
  90                 procfile = tryOpen("/proc/mounts")
  91
  92                 if procfile == "":
  93                         return -1
  94
  95                 free = -1
  96                 while 1:
  97                         line = procfile.readline()
  98                         if line == "":
  99                                 break
 100                         if line.startswith(self.devidex):
 101                                 parts = line.strip().split(" ")
 102                                 try:
 103                                         stat = statvfs(parts[1])
 104                                 except OSError:
 105                                         continue
 106                                 free = stat.f_bfree/1000 * stat.f_bsize/1000
 107                                 break
 108                 procfile.close()
 109                 return free
 110
 111         def numPartitions(self):
 112                 try:
 113                         idedir = listdir(self.devidex)
 114                 except OSError:
 115                         return -1
 116                 numPart = -1
 117                 for filename in idedir:
 118                         if filename.startswith("disc"):
 119                                 numPart += 1
 120                         if filename.startswith("part"):
 121                                 numPart += 1
 122                 return numPart
 123
 124         def unmount(self):
 125                 procfile = tryOpen("/proc/mounts")
 126
 127                 if procfile == "":
 128                         return -1
 129
 130                 cmd = "/bin/umount"
 131
 132                 for line in procfile:
 133                         if line.startswith(self.devidex):
 134                                 parts = line.split()
 135                                 cmd = ' '.join([cmd, parts[1]])
 136
 137                 procfile.close()
 138
 139                 res = system(cmd)
 140                 return (res >> 8)
 141
 142         def createPartition(self):
 143                 cmd = "/sbin/sfdisk -f " + self.devidex + "disc"
 144                 sfdisk = popen(cmd, "w")
 145                 sfdisk.write("0,\n;\n;\n;\ny\n")
 146                 sfdisk.close()
 147                 return 0
 148
 149         def mkfs(self):
 150                 cmd = "/sbin/mkfs.ext3 "
 151                 if self.diskSize() > 4 * 1024:
 152                         cmd += "-T largefile "
 153                 cmd += "-m0 " + self.devidex + "part1"
 154                 res = system(cmd)
 155                 return (res >> 8)
 156
 157         def mount(self):
 158                 cmd = "/bin/mount -t ext3 " + self.devidex + "part1"
 159                 res = system(cmd)
 160                 return (res >> 8)
 161
 162         def createMovieFolder(self):
 163                 try:
 164                         makedirs(resolveFilename(SCOPE_HDD))
 165                 except OSError:
 166                         return -1
 167                 return 0
 168
 169         def fsck(self):
 170                 # We autocorrect any failures
 171                 # TODO: we could check if the fs is actually ext3
 172                 cmd = "/sbin/fsck.ext3 -f -p " + self.devidex + "part1"
 173                 res = system(cmd)
 174                 return (res >> 8)
 175
 176         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")]
 177
 178         def initialize(self):
 179                 self.unmount()
 180
 181                 if self.createPartition() != 0:
 182                         return -1
 183
 184                 if self.mkfs() != 0:
 185                         return -2
 186
 187                 if self.mount() != 0:
 188                         return -3
 189
 190                 if self.createMovieFolder() != 0:
 191                         return -4
 192
 193                 return 0
 194
 195         def check(self):
 196                 self.unmount()
 197
 198                 res = self.fsck()
 199                 if res & 2 == 2:
 200                         return -6
 201
 202                 if res & 4 == 4:
 203                         return -7
 204
 205                 if res != 0 and res != 1:
 206                         # A sum containing 1 will also include a failure
 207                         return -5
 208
 209                 if self.mount() != 0:
 210                         return -3
 211
 212                 return 0
 213
 214         def getDeviceDir(self):
 215                 return self.devidex
 216
 217         def getDeviceName(self):
 218                 return self.getDeviceDir() + "disc"
 219
 220         # the HDD idle poll daemon.
 221         # as some harddrives have a buggy standby timer, we are doing this by hand here.
 222         # first, we disable the hardware timer. then, we check every now and then if
 223         # any access has been made to the disc. If there has been no access over a specifed time,
 224         # we set the hdd into standby.
 225         def readStats(self):
 226                 l = open("/sys/block/%s/stat" % self.device).read()
 227                 nr_read = int(l[:8].strip())
 228                 nr_write = int(l[4*9:4*9+8].strip())
 229                 return nr_read, nr_write
 230
 231         def startIdle(self):
 232                 self.last_access = time.time()
 233                 self.last_stat = 0
 234                 self.is_sleeping = False
 235                 from enigma import eTimer
 236
 237                 # disable HDD standby timer
 238                 Console().ePopen(("hdparm", "hdparm", "-S0", (self.devidex + "disc")))
 239                 self.timer = eTimer()
 240                 self.timer.callback.append(self.runIdle)
 241                 self.idle_running = True
 242                 self.setIdleTime(self.max_idle_time) # kick the idle polling loop
 243
 244         def runIdle(self):
 245                 if not self.max_idle_time:
 246                         return
 247                 t = time.time()
 248
 249                 idle_time = t - self.last_access
 250
 251                 l = sum(self.readStats())
 252
 253                 if l != self.last_stat: # access
 254                         self.last_stat = l
 255                         self.last_access = t
 256                         self.idle_time = 0
 257                         self.is_sleeping = False
 258
 259                 #print "[IDLE]", idle_time, self.max_idle_time, self.is_sleeping
 260                 if idle_time >= self.max_idle_time and not self.is_sleeping:
 261                         self.setSleep()
 262                         self.is_sleeping = True
 263
 264         def setSleep(self):
 265                 Console().ePopen(("hdparm", "hdparm", "-y", (self.devidex + "disc")))
 266
 267         def setIdleTime(self, idle):
 268                 self.max_idle_time = idle
 269                 if self.idle_running:
 270                         if not idle:
 271                                 self.timer.stop()
 272                         else:
 273                                 self.timer.start(idle * 250, False)  # poll 4 times per period.
 274
 275         def isSleeping(self):
 276                 return self.is_sleeping
 277
 278 class Partition:
 279         def __init__(self, mountpoint, device = None, description = "", force_mounted = False):
 280                 self.mountpoint = mountpoint
 281                 self.description = description
 282                 self.force_mounted = force_mounted
 283                 self.is_hotplug = force_mounted # so far; this might change.
 284                 self.device = device
 285
 286         def stat(self):
 287                 return statvfs(self.mountpoint)
 288
 289         def free(self):
 290                 try:
 291                         s = self.stat()
 292                         return s.f_bavail * s.f_bsize
 293                 except OSError:
 294                         return None
 295
 296         def total(self):
 297                 try:
 298                         s = self.stat()
 299                         return s.f_blocks * s.f_bsize
 300                 except OSError:
 301                         return None
 302
 303         def mounted(self):
 304                 # THANK YOU PYTHON FOR STRIPPING AWAY f_fsid.
 305                 # TODO: can os.path.ismount be used?
 306                 if self.force_mounted:
 307                         return True
 308                 procfile = tryOpen("/proc/mounts")
 309                 for n in procfile.readlines():
 310                         if n.split(' ')[1] == self.mountpoint:
 311                                 return True
 312                 return False
 313
 314 DEVICEDB =  \
 315         {
 316                 # dm8000:
 317                 "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.1/1-1.1:1.0": "Front USB Slot",
 318                 "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.2/1-1.2:1.0": "Back, upper USB Slot",
 319                 "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.3/1-1.3:1.0": "Back, lower USB Slot",
 320                 "/devices/platform/brcm-ehci-1.1/usb2/2-1/2-1:1.0/host1/target1:0:0/1:0:0:0": "DVD Drive",
 321         }
 322
 323 class HarddiskManager:
 324         def __init__(self):
 325                 self.hdd = [ ]
 326                 self.cd = ""
 327                 self.partitions = [ ]
 328
 329                 self.on_partition_list_change = CList()
 330
 331                 self.enumerateBlockDevices()
 332
 333                 # currently, this is just an enumeration of what's possible,
 334                 # this probably has to be changed to support automount stuff.
 335                 # still, if stuff is mounted into the correct mountpoints by
 336                 # external tools, everything is fine (until somebody inserts
 337                 # a second usb stick.)
 338                 p = [
 339                                         ("/media/hdd", _("Harddisk")),
 340                                         ("/media/card", _("Card")),
 341                                         ("/media/cf", _("Compact Flash")),
 342                                         ("/media/mmc1", _("MMC Card")),
 343                                         ("/media/net", _("Network Mount")),
 344                                         ("/media/ram", _("Ram Disk")),
 345                                         ("/media/usb", _("USB Stick")),
 346                                         ("/", _("Internal Flash"))
 347                                 ]
 348
 349                 for x in p:
 350                         self.partitions.append(Partition(mountpoint = x[0], description = x[1]))
 351
 352         def getBlockDevInfo(self, blockdev):
 353                 devpath = "/sys/block/" + blockdev
 354                 error = False
 355                 removable = False
 356                 blacklisted = False
 357                 is_cdrom = False
 358                 partitions = []
 359                 try:
 360                         removable = bool(int(open(devpath + "/removable").read()))
 361                         dev = int(open(devpath + "/dev").read().split(':')[0])
 362                         if dev in [7, 31]: # loop, mtdblock
 363                                 blacklisted = True
 364                         if blockdev[0:2] == 'sr':
 365                                 is_cdrom = True
 366                         if blockdev[0:2] == 'hd':
 367                                 try:
 368                                         media = open("/proc/ide/%s/media" % blockdev).read()
 369                                         if media.find("cdrom") != -1:
 370                                                 is_cdrom = True
 371                                 except IOError:
 372                                         error = True
 373                         # check for partitions
 374                         if not is_cdrom:
 375                                 for partition in listdir(devpath):
 376                                         if partition[0:len(blockdev)] != blockdev:
 377                                                 continue
 378                                         partitions.append(partition)
 379                         else:
 380                                 self.cd = blockdev
 381                 except IOError:
 382                         error = True
 383                 # check for medium
 384                 medium_found = True
 385                 try:
 386                         open("/dev/" + blockdev).close()
 387                 except IOError, err:
 388                         if err.errno == 159: # no medium present
 389                                 medium_found = False
 390
 391                 return error, blacklisted, removable, is_cdrom, partitions, medium_found
 392
 393         def enumerateBlockDevices(self):
 394                 print "enumerating block devices..."
 395                 for blockdev in listdir("/sys/block"):
 396                         error, blacklisted, removable, is_cdrom, partitions, medium_found = self.getBlockDevInfo(blockdev)
 397                         print "found block device '%s':" % blockdev,
 398                         if error:
 399                                 print "error querying properties"
 400                         elif blacklisted:
 401                                 print "blacklisted"
 402                         elif not medium_found:
 403                                 print "no medium"
 404                         else:
 405                                 print "ok, removable=%s, cdrom=%s, partitions=%s, device=%s" % (removable, is_cdrom, partitions, blockdev)
 406
 407                                 self.addHotplugPartition(blockdev)
 408                                 for part in partitions:
 409                                         self.addHotplugPartition(part)
 410
 411         def getAutofsMountpoint(self, device):
 412                 return "/autofs/%s/" % (device)
 413
 414         def addHotplugPartition(self, device, physdev = None):
 415                 if not physdev:
 416                         dev, part = self.splitDeviceName(device)
 417                         try:
 418                                 physdev = readlink("/sys/block/" + dev + "/device")[5:]
 419                         except OSError:
 420                                 physdev = dev
 421                                 print "couldn't determine blockdev physdev for device", device
 422
 423                 # device is the device name, without /dev
 424                 # physdev is the physical device path, which we (might) use to determine the userfriendly name
 425                 description = self.getUserfriendlyDeviceName(device, physdev)
 426
 427                 p = Partition(mountpoint = self.getAutofsMountpoint(device), description = description, force_mounted = True, device = device)
 428                 self.partitions.append(p)
 429                 self.on_partition_list_change("add", p)
 430
 431                 # see if this is a harddrive
 432                 l = len(device)
 433                 if l and device[l-1] not in string.digits:
 434                         error, blacklisted, removable, is_cdrom, partitions, medium_found = self.getBlockDevInfo(device)
 435                         if not blacklisted and not removable and not is_cdrom and medium_found:
 436                                 self.hdd.append(Harddisk(device))
 437                                 self.hdd.sort()
 438                                 SystemInfo["Harddisk"] = len(self.hdd) > 0
 439
 440         def removeHotplugPartition(self, device):
 441                 mountpoint = self.getAutofsMountpoint(device)
 442                 for x in self.partitions[:]:
 443                         if x.mountpoint == mountpoint:
 444                                 self.partitions.remove(x)
 445                                 self.on_partition_list_change("remove", x)
 446                 l = len(device)
 447                 if l and device[l-1] not in string.digits:
 448                         idx = 0
 449                         for hdd in self.hdd:
 450                                 if hdd.device == device:
 451                                         del self.hdd[idx]
 452                                         break
 453                         SystemInfo["Harddisk"] = len(self.hdd) > 0
 454
 455         def HDDCount(self):
 456                 return len(self.hdd)
 457
 458         def HDDList(self):
 459                 list = [ ]
 460                 for hd in self.hdd:
 461                         hdd = hd.model() + " - " + hd.bus()
 462                         cap = hd.capacity()
 463                         if cap != "":
 464                                 hdd += " (" + cap + ")"
 465                         list.append((hdd, hd))
 466                 return list
 467
 468         def getCD(self):
 469                 return self.cd
 470
 471         def getMountedPartitions(self, onlyhotplug = False):
 472                 parts = [x for x in self.partitions if (x.is_hotplug or not onlyhotplug) and x.mounted()]
 473                 devs = set([x.device for x in parts])
 474                 for devname in devs.copy():
 475                         if not devname:
 476                                 continue
 477                         dev, part = self.splitDeviceName(devname)
 478                         if part and dev in devs: # if this is a partition and we still have the wholedisk, remove wholedisk
 479                                 devs.remove(dev)
 480
 481                 # return all devices which are not removed due to being a wholedisk when a partition exists
 482                 return [x for x in parts if not x.device or x.device in devs]
 483
 484         def splitDeviceName(self, devname):
 485                 # 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.
 486                 dev = devname[:3]
 487                 part = devname[3:]
 488                 for p in part:
 489                         if p not in string.digits:
 490                                 return devname, 0
 491                 return dev, part and int(part) or 0
 492
 493         def getUserfriendlyDeviceName(self, dev, phys):
 494                 dev, part = self.splitDeviceName(dev)
 495                 description = "External Storage %s" % dev
 496                 try:
 497                         description = open("/sys" + phys + "/model").read().strip()
 498                 except IOError, s:
 499                         print "couldn't read model: ", s
 500                 for physdevprefix, pdescription in DEVICEDB.items():
 501                         if phys.startswith(physdevprefix):
 502                                 description = pdescription
 503
 504                 # not wholedisk and not partition 1
 505                 if part and part != 1:
 506                         description += " (Partition %d)" % part
 507                 return description
 508
 509 harddiskmanager = HarddiskManager()