physdev path start with /, like in hotplug. add dvd drive into devicedb. fix scanner...
[enigma2.git] / lib / python / Components / Harddisk.py
index dcf7657058de9bfff572629cd8540e7e2729a94d..ad7f28de7f4a5c15ce2a8d7bfb5223aa61f56596 100644 (file)
@@ -1,4 +1,8 @@
-import os
+from os import system, listdir, statvfs, popen, makedirs, readlink, stat, major, minor
+from Tools.Directories import SCOPE_HDD, resolveFilename
+from Tools.CList import CList
+from SystemInfo import SystemInfo
+import string
 
 def tryOpen(filename):
        try:
@@ -7,58 +11,76 @@ def tryOpen(filename):
                return ""
        return procFile
 
-def num2prochdx(num):
-       return "/proc/ide/hd" + ("a","b","c","d","e","f","g","h","i")[num] + "/"
-
 class Harddisk:
-       def __init__(self, index):
-               self.index = index
-
-               host = self.index / 4
-               bus = (self.index & 2)
-               target = (self.index & 1)
-
-               self.prochdx = num2prochdx(index)
-               self.devidex = "/dev/ide/host%d/bus%d/target%d/lun0/" % (host, bus, target)
+       def __init__(self, device):
+               self.device = device
+               procfile = tryOpen("/sys/block/"+self.device+"/dev")
+               tmp = procfile.readline().split(':')
+               s_major = int(tmp[0])
+               s_minor = int(tmp[1])
+               for disc in listdir("/dev/discs"):
+                       path = readlink('/dev/discs/'+disc)
+                       devidex = '/dev/discs/'+disc+'/'
+                       devidex2 = '/dev'+path[2:]+'/'
+                       disc = devidex2+'disc'
+                       ret = stat(disc).st_rdev
+                       if s_major == major(ret) and s_minor == minor(ret):
+                               self.devidex = devidex
+                               self.devidex2 = devidex2
+                               print "new Harddisk", device, '->', self.devidex, '->', self.devidex2
+                               break
 
-       def getIndex(self):
-               return self.index
+       def __lt__(self, ob):
+               return self.device < ob.device
 
        def bus(self):
-               #TODO: add the host
-               if self.index & 1:
-                       return "Slave"
+               ide_cf = self.device.find("hd") == 0 and self.devidex2.find("host0") == -1 # 7025 specific
+               internal = self.device.find("hd") == 0
+               if ide_cf:
+                       ret = "External (CF)"
+               elif internal:
+                       ret = "Internal"
                else:
-                       return "Master"
+                       ret = "External"
+               return ret
 
-       def capacity(self):
-               procfile = tryOpen(self.prochdx + "capacity")
-               
+       def diskSize(self):
+               procfile = tryOpen("/sys/block/"+self.device+"/size")
                if procfile == "":
-                       return ""
-
+                       return 0
                line = procfile.readline()
                procfile.close()
-               
                try:
                        cap = int(line)
                except:
+                       return 0;
+               return cap / 1000 * 512 / 1000
+
+       def capacity(self):
+               cap = self.diskSize()
+               if cap == 0:
                        return ""
-               
-               cap = cap / 1000 * 512 / 1000
-               
                return "%d.%03d GB" % (cap/1024, cap%1024)
-                                                               
-       def model(self):
-               procfile = tryOpen(self.prochdx + "model")
-               
-               if procfile == "":
-                       return ""
 
-               line = procfile.readline()
-               procfile.close()
-
-               return line.strip()
+       def model(self):
+               if self.device.find("hd") == 0:
+                       procfile = tryOpen("/proc/ide/"+self.device+"/model")
+                       if procfile == "":
+                               return ""
+                       line = procfile.readline()
+                       procfile.close()
+                       return line.strip()
+               elif self.device.find("sd") == 0:
+                       procfile = tryOpen("/sys/block/"+self.device+"/device/vendor")
+                       if procfile == "":
+                               return ""
+                       vendor = procfile.readline().strip()
+                       procfile.close()
+                       procfile = tryOpen("/sys/block/"+self.device+"/device/model")
+                       model = procfile.readline().strip()
+                       return vendor+'('+model+')'
+               else:
+                       assert False, "no hdX or sdX"
 
        def free(self):
                procfile = tryOpen("/proc/mounts")
@@ -74,17 +96,17 @@ class Harddisk:
                        if line.startswith(self.devidex):
                                parts = line.strip().split(" ")
                                try:
-                                       stat = os.statvfs(parts[1])
+                                       stat = statvfs(parts[1])
                                except OSError:
                                        continue
                                free = stat.f_bfree/1000 * stat.f_bsize/1000
                                break
                procfile.close()
-               return free             
+               return free
 
        def numPartitions(self):
                try:
-                       idedir = os.listdir(self.devidex)
+                       idedir = listdir(self.devidex)
                except OSError:
                        return -1
                numPart = -1
@@ -96,30 +118,59 @@ class Harddisk:
                return numPart
 
        def unmount(self):
-               cmd = "/bin/umount " + self.devidex + "part*"
-               os.system(cmd)
+               procfile = tryOpen("/proc/mounts")
+
+               if procfile == "":
+                       return -1
+
+               cmd = "/bin/umount"
+
+               for line in procfile:
+                       if line.startswith(self.devidex):
+                               parts = line.split()
+                               cmd = ' '.join([cmd, parts[1]])
+
+               procfile.close()
+
+               res = system(cmd)
+               return (res >> 8)
 
        def createPartition(self):
                cmd = "/sbin/sfdisk -f " + self.devidex + "disc"
-               sfdisk = os.popen(cmd, "w")
+               sfdisk = popen(cmd, "w")
                sfdisk.write("0,\n;\n;\n;\ny\n")
                sfdisk.close()
                return 0
 
        def mkfs(self):
-               cmd = "/sbin/mkfs.ext3 -T largefile -m0 " + self.devidex + "part1"
-               res = os.system(cmd)
+               cmd = "/sbin/mkfs.ext3 "
+               if self.diskSize() > 4 * 1024:
+                       cmd += "-T largefile "
+               cmd += "-m0 " + self.devidex + "part1"
+               res = system(cmd)
                return (res >> 8)
 
        def mount(self):
-               cmd = "/bin/mount -t ext3 " + self.devidex + "part1 /hdd"
-               res = os.system(cmd)
+               cmd = "/bin/mount -t ext3 " + self.devidex + "part1"
+               res = system(cmd)
                return (res >> 8)
 
        def createMovieFolder(self):
-               res = os.system("mkdir /hdd/movie")
+               try:
+                       makedirs(resolveFilename(SCOPE_HDD))
+               except OSError:
+                       return -1
+               return 0
+
+       def fsck(self):
+               # We autocorrect any failures
+               # TODO: we could check if the fs is actually ext3
+               cmd = "/sbin/fsck.ext3 -f -p " + self.devidex + "part1"
+               res = system(cmd)
                return (res >> 8)
-               
+
+       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")]
+
        def initialize(self):
                self.unmount()
 
@@ -134,48 +185,263 @@ class Harddisk:
 
                if self.createMovieFolder() != 0:
                        return -4
-               
+
                return 0
-               
-def existHDD(num):
-       mediafile = tryOpen(num2prochdx(num) + "media")
 
-       if mediafile == "":
-               return -1
+       def check(self):
+               self.unmount()
+
+               res = self.fsck()
+               if res & 2 == 2:
+                       return -6
+
+               if res & 4 == 4:
+                       return -7
+
+               if res != 0 and res != 1:
+                       # A sum containing 1 will also include a failure
+                       return -5
+
+               if self.mount() != 0:
+                       return -3
 
-       line = mediafile.readline()
-       mediafile.close()
+               return 0
        
-       if line.startswith("disk"):
-               return 1
+       def getDeviceDir(self):
+               return self.devidex
        
-       return -1
+       def getDeviceName(self):
+               return self.getDeviceDir() + "disc"
+
+class Partition:
+       def __init__(self, mountpoint, device = None, description = "", force_mounted = False):
+               self.mountpoint = mountpoint
+               self.description = description
+               self.force_mounted = force_mounted
+               self.is_hotplug = force_mounted # so far; this might change.
+               self.device = device
+
+       def stat(self):
+               return statvfs(self.mountpoint)
+
+       def free(self):
+               try:
+                       s = self.stat()
+                       return s.f_bavail * s.f_bsize
+               except OSError:
+                       return None
+       
+       def total(self):
+               try:
+                       s = self.stat()
+                       return s.f_blocks * s.f_bsize
+               except OSError:
+                       return None
+
+       def mounted(self):
+               # THANK YOU PYTHON FOR STRIPPING AWAY f_fsid.
+               # TODO: can os.path.ismount be used?
+               if self.force_mounted:
+                       return True
+               procfile = tryOpen("/proc/mounts")
+               for n in procfile.readlines():
+                       if n.split(' ')[1] == self.mountpoint:
+                               return True
+               return False
+
+DEVICEDB =  \
+       {
+               # dm8000:
+               "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.1/1-1.1:1.0": "Front USB Slot",
+               "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.2/1-1.2:1.0": "Back, upper USB Slot",
+               "/devices/platform/brcm-ehci.0/usb1/1-1/1-1.3/1-1.3:1.0": "Back, lower USB Slot",
+               "/devices/platform/brcm-ehci-1.1/usb2/2-1/2-1:1.0/host1/target1:0:0/1:0:0:0": "DVD Drive",
+       }
 
 class HarddiskManager:
        def __init__(self):
-               hddNum = 0
                self.hdd = [ ]
-               while 1:
-                       if existHDD(hddNum) == 1:
-                               self.hdd.append(Harddisk(hddNum))
-                       hddNum += 1
+               self.cd = ""
+               self.partitions = [ ]
+               
+               self.on_partition_list_change = CList()
+               
+               self.enumerateBlockDevices()
+               
+               # currently, this is just an enumeration of what's possible,
+               # this probably has to be changed to support automount stuff.
+               # still, if stuff is mounted into the correct mountpoints by
+               # external tools, everything is fine (until somebody inserts 
+               # a second usb stick.)
+               p = [
+                                       ("/media/hdd", _("Harddisk")), 
+                                       ("/media/card", _("Card")), 
+                                       ("/media/cf", _("Compact Flash")),
+                                       ("/media/mmc1", _("MMC Card")),
+                                       ("/media/net", _("Network Mount")),
+                                       ("/media/ram", _("Ram Disk")),
+                                       ("/media/usb", _("USB Stick")),
+                                       ("/", _("Internal Flash"))
+                               ]
+               
+               for x in p:
+                       self.partitions.append(Partition(mountpoint = x[0], description = x[1]))
+
+       def getBlockDevInfo(self, blockdev):
+               devpath = "/sys/block/" + blockdev
+               error = False
+               removable = False
+               blacklisted = False
+               is_cdrom = False
+               partitions = []
+               try:
+                       removable = bool(int(open(devpath + "/removable").read()))
+                       dev = int(open(devpath + "/dev").read().split(':')[0])
+                       if dev in [7, 31]: # loop, mtdblock
+                               blacklisted = True
+                       if blockdev[0:2] == 'sr':
+                               is_cdrom = True
+                       if blockdev[0:2] == 'hd':
+                               try:
+                                       media = open("/proc/ide/%s/media" % blockdev).read()
+                                       if media.find("cdrom") != -1:
+                                               is_cdrom = True
+                               except IOError:
+                                       error = True
+                       # check for partitions
+                       if not is_cdrom:
+                               for partition in listdir(devpath):
+                                       if partition[0:len(blockdev)] != blockdev:
+                                               continue
+                                       partitions.append(partition)
+                       else:
+                               self.cd = blockdev
+               except IOError:
+                       error = True
+               # check for medium
+               medium_found = True
+               try:
+                       open("/dev/" + blockdev).close()
+               except IOError, err:
+                       if err.errno == 159: # no medium present
+                               medium_found = False
                        
-                       if hddNum > 8:
-                               break
+               return error, blacklisted, removable, is_cdrom, partitions, medium_found
+
+       def enumerateBlockDevices(self):
+               print "enumerating block devices..."
+               for blockdev in listdir("/sys/block"):
+                       error, blacklisted, removable, is_cdrom, partitions, medium_found = self.getBlockDevInfo(blockdev)
+                       print "found block device '%s':" % blockdev, 
+                       if error:
+                               print "error querying properties"
+                       elif blacklisted:
+                               print "blacklisted"
+                       elif not medium_found:
+                               print "no medium"
+                       else:
+                               print "ok, removable=%s, cdrom=%s, partitions=%s, device=%s" % (removable, is_cdrom, partitions, blockdev)
+
+                               self.addHotplugPartition(blockdev)
+                               for part in partitions:
+                                       self.addHotplugPartition(part)
+
+       def getAutofsMountpoint(self, device):
+               return "/autofs/%s/" % (device)
+
+       def addHotplugPartition(self, device, physdev = None):
+               if not physdev:
+                       dev, part = self.splitDeviceName(device)
+                       try:
+                               physdev = readlink("/sys/block/" + dev + "/device")[5:]
+                       except OSError:
+                               physdev = dev
+                               print "couldn't determine blockdev physdev for device", device
+
+               # device is the device name, without /dev 
+               # physdev is the physical device path, which we (might) use to determine the userfriendly name
+               description = self.getUserfriendlyDeviceName(device, physdev)
+               
+               p = Partition(mountpoint = self.getAutofsMountpoint(device), description = description, force_mounted = True, device = device)
+               self.partitions.append(p)
+               self.on_partition_list_change("add", p)
+
+               # see if this is a harddrive
+               l = len(device)
+               if l and device[l-1] not in string.digits:
+                       error, blacklisted, removable, is_cdrom, partitions, medium_found = self.getBlockDevInfo(device)
+                       if not blacklisted and not removable and not is_cdrom and medium_found:
+                               self.hdd.append(Harddisk(device))
+                               self.hdd.sort()
+                               SystemInfo["Harddisk"] = len(self.hdd) > 0
+
+       def removeHotplugPartition(self, device):
+               mountpoint = self.getAutofsMountpoint(device)
+               for x in self.partitions[:]:
+                       if x.mountpoint == mountpoint:
+                               self.partitions.remove(x)
+                               self.on_partition_list_change("remove", x)
+               l = len(device)
+               if l and device[l-1] not in string.digits:
+                       idx = 0
+                       for hdd in self.hdd:
+                               if hdd.device == device:
+                                       del self.hdd[idx]
+                                       break
+                       SystemInfo["Harddisk"] = len(self.hdd) > 0
+
+       def HDDCount(self):
+               return len(self.hdd)
 
        def HDDList(self):
                list = [ ]
                for hd in self.hdd:
-                       hdd = hd.model() + " (" 
-                       hdd += hd.bus()
-                       cap = hd.capacity()     
+                       hdd = hd.model() + " - " + hd.bus()
+                       cap = hd.capacity()
                        if cap != "":
-                               hdd += ", " + cap
-                       hdd += ")"
+                               hdd += " (" + cap + ")"
                        list.append((hdd, hd))
-
                return list
 
-harddiskmanager = HarddiskManager()
+       def getCD(self):
+               return self.cd
+
+       def getMountedPartitions(self, onlyhotplug = False):
+               parts = [x for x in self.partitions if (x.is_hotplug or not onlyhotplug) and x.mounted()]
+               devs = set([x.device for x in parts])
+               for devname in devs.copy():
+                       if not devname:
+                               continue
+                       dev, part = self.splitDeviceName(devname)
+                       if part and dev in devs: # if this is a partition and we still have the wholedisk, remove wholedisk
+                               devs.remove(dev)
 
+               # return all devices which are not removed due to being a wholedisk when a partition exists
+               return [x for x in parts if not x.device or x.device in devs]
 
+       def splitDeviceName(self, devname):
+               # 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.
+               dev = devname[:3]
+               part = devname[3:]
+               for p in part:
+                       if p not in string.digits:
+                               return devname, 0
+               return dev, part and int(part) or 0
+
+       def getUserfriendlyDeviceName(self, dev, phys):
+               dev, part = self.splitDeviceName(dev)
+               description = "External Storage %s" % dev
+               try:
+                       description = open("/sys" + phys + "/model").read().strip()
+               except IOError, s:
+                       print "couldn't read model: ", s
+               for physdevprefix, pdescription in DEVICEDB.items():
+                       if phys.startswith(physdevprefix):
+                               description = pdescription
+
+               # not wholedisk and not partition 1
+               if part and part != 1:
+                       description += " (Partition %d)" % part
+               return description
+
+harddiskmanager = HarddiskManager()