remove unneeded del...
[enigma2.git] / lib / python / Components / Harddisk.py
index 37e957e41db8658d4980deec6acc1ce2849f70ae..a5727cf71aef725af0cdc178740b306c8384dace 100644 (file)
@@ -1,6 +1,7 @@
-import os
-
-from Tools.Directories import *
+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
 
 def tryOpen(filename):
        try:
@@ -9,64 +10,74 @@ 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'+path[2:]+'/'
+                       disc = devidex+'disc'
+                       ret = stat(disc).st_rdev
+                       if s_major == major(ret) and s_minor == minor(ret):
+                               self.devidex = devidex
+                               print "new Harddisk",  device, self.devidex
+                               break
 
-       def getIndex(self):
-               return self.index
+       def __lt__(self, ob):
+               return self.device < ob.device
 
        def bus(self):
-               ret = ""
-
-               if self.index & 2:
-                       ret = "External (CF) - "
-               else:
-                       ret = "Internal - "
-               
-               if self.index & 1:
-                       return ret + "Slave"
+               ide_cf = self.device.find("hd") == 0 and self.devidex.find("host0") == -1 # 7025 specific
+               internal = self.device.find("hd") == 0 and self.devidex
+               if ide_cf:
+                       ret = "External (CF)"
+               elif internal:
+                       ret = "Internal"
                else:
-                       return ret + "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")
@@ -82,17 +93,17 @@ 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
@@ -104,32 +115,58 @@ class Harddisk:
                return numPart
 
        def unmount(self):
-               cmd = "/bin/umount " + self.devidex + "part*"
-               res = 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 " + resolveFilename(SCOPE_HDD))
+               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"), _("Unmount failed")]
+
+       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()
@@ -145,54 +182,193 @@ 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
 
-       line = mediafile.readline()
-       mediafile.close()
+               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
+
+               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, 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.
+
+       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
 
 class HarddiskManager:
        def __init__(self):
-               hddNum = 0
                self.hdd = [ ]
-               while 1:
-                       if existHDD(hddNum) == 1:
-                               self.hdd.append(Harddisk(hddNum))
-                       hddNum += 1
-                       
-                       if hddNum > 8:
-                               break
+               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 = "/dev/"+blockdev
+               except IOError:
+                       error = True
+               return error, blacklisted, removable, is_cdrom, partitions
+
+       def enumerateBlockDevices(self):
+               print "enumerating block devices..."
+               for blockdev in listdir("/sys/block"):
+                       error, blacklisted, removable, is_cdrom, partitions = self.getBlockDevInfo(blockdev)
+                       print "found block device '%s':" % blockdev, 
+                       if error:
+                               print "error querying properties"
+                       elif blacklisted:
+                               print "blacklisted"
+                       else:
+                               print "ok, removable=%s, cdrom=%s, partitions=%s, device=%s" % (removable, is_cdrom, partitions, blockdev)
+                               self.addHotplugPartition(blockdev, blockdev)
+                               for part in partitions:
+                                       self.addHotplugPartition(part, part)
+
+       def getAutofsMountpoint(self, device):
+               return "/autofs/%s/" % (device)
+
+       def addHotplugPartition(self, device, description):
+               p = Partition(mountpoint = self.getAutofsMountpoint(device), description = description, force_mounted = True)
+               self.partitions.append(p)
+               self.on_partition_list_change("add", p)
+               l = len(device)
+               if l and device[l-1] not in ('0','1','2','3','4','5','6','7','8','9'):
+                       error, blacklisted, removable, is_cdrom, partitions = self.getBlockDevInfo(device)
+                       if not blacklisted and not removable and not is_cdrom:
+                               self.hdd.append(Harddisk(device))
+                               self.hdd.sort()
+                               SystemInfo["Harddisc"] = 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 ('0','1','2','3','4','5','6','7','8','9'):
+                       idx = 0
+                       for hdd in self.hdd:
+                               if hdd.device == device:
+                                       del self.hdd[idx]
+                                       break
+                       SystemInfo["Harddisc"] = len(self.hdd) > 0
 
        def HDDCount(self):
-               cnt = 0
-               for hd in self.hdd:
-                       cnt = cnt + 1
-               return cnt      
+               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):
+               return [x for x in self.partitions if (x.is_hotplug or not onlyhotplug) and x.mounted()]
 
+harddiskmanager = HarddiskManager()