handle case of empty text
[enigma2.git] / lib / python / Components / Harddisk.py
index 3c2425103c1fce829b8bab8c129a2b190d4ff40a..74736a081872e6136c6902b3656d3eebd821a910 100644 (file)
@@ -1,4 +1,9 @@
-import os
+from os import system, listdir, statvfs, popen, makedirs
+
+from Tools.Directories import SCOPE_HDD, resolveFilename
+from Tools.CList import CList
+
+from SystemInfo import SystemInfo
 
 def tryOpen(filename):
        try:
@@ -14,32 +19,55 @@ class Harddisk:
        def __init__(self, index):
                self.index = index
 
-               host = self.index / 4
-               bus = (self.index & 2)
+               host = (self.index & 2) >> 1
+               bus = 0
                target = (self.index & 1)
 
                self.prochdx = num2prochdx(index)
                self.devidex = "/dev/ide/host%d/bus%d/target%d/lun0/" % (host, bus, target)
 
-       def capacity(self):
-               procfile = tryOpen(self.prochdx + "capacity")
+       def getIndex(self):
+               return self.index
+
+       def bus(self):
+               ret = ""
+
+               if self.index & 2:
+                       ret = "External (CF) - "
+               else:
+                       ret = "Internal - "
                
+               if self.index & 1:
+                       return ret + "Slave"
+               else:
+                       return ret + "Master"
+
+       def diskSize(self):
+               procfile = tryOpen(self.prochdx + "capacity")
+
                if procfile == "":
-                       return -1
+                       return 0
 
                line = procfile.readline()
                procfile.close()
-               
+
                try:
                        cap = int(line)
                except:
-                       return -1
+                       return 0
+
+               return cap / 1000 * 512 / 1000
+
+       def capacity(self):
+               cap = self.diskSize()
+               if cap == 0:
+                       return ""
                
-               return cap      
-                                               
+               return "%d.%03d GB" % (cap/1024, cap%1024)
+
        def model(self):
                procfile = tryOpen(self.prochdx + "model")
-               
+
                if procfile == "":
                        return ""
 
@@ -62,7 +90,7 @@ 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
@@ -72,7 +100,7 @@ class Harddisk:
 
        def numPartitions(self):
                try:
-                       idedir = os.listdir(self.devidex)
+                       idedir = listdir(self.devidex)
                except OSError:
                        return -1
                numPart = -1
@@ -84,30 +112,59 @@ 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()
 
@@ -120,63 +177,147 @@ class Harddisk:
                if self.mount() != 0:
                        return -3
 
-               if self.createMovieFolder() != 0:
+               #only create a movie folder on the internal hdd
+               if not self.index & 2 and self.createMovieFolder() != 0:
                        return -4
                
                return 0
-               
+
+       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
+
+               return 0
+
 def existHDD(num):
        mediafile = tryOpen(num2prochdx(num) + "media")
 
        if mediafile == "":
-               return -1
+               return False
 
        line = mediafile.readline()
        mediafile.close()
-       
+
        if line.startswith("disk"):
-               return 1
+               return True
+
+       return False
+
+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
        
-       return -1
+       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.partitions = [ ]
+               
+               self.on_partition_list_change = CList()
+               
+               for hddNum in range(8):
+                       if existHDD(hddNum):
+                               hdd = Harddisk(hddNum)
+                               self.hdd.append(hdd)
+
+               SystemInfo["Harddisc"] = len(self.hdd) > 0
+
+               # 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 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)
+
+       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)
+
+       def HDDCount(self):
+               return len(self.hdd)
 
        def HDDList(self):
                list = [ ]
                for hd in self.hdd:
-                       cap = hd.capacity() / 1000 * 512 / 1000
-                       print cap
                        hdd = hd.model() + " (" 
-                       if hd.index & 1:
-                               hdd += "slave"
-                       else:   
-                               hdd += "master"
-                       if cap > 0:
-                               hdd += ", %d.%03d GB" % (cap/1024, cap%1024)
+                       hdd += hd.bus()
+                       cap = hd.capacity()     
+                       if cap != "":
+                               hdd += ", " + cap
                        hdd += ")"
-
-                       print hdd
-                       
-#                      if hd.index == 0:
-#                              if hd.initialize() == 0:
-#                                      print "hdd status ok"
-#                              else:
-#                                      print "hdd status ok"
-
                        list.append((hdd, hd))
+
                return list
 
+       def getMountedPartitions(self, onlyhotplug = False):
+               return [x for x in self.partitions if (x.is_hotplug or not onlyhotplug) and x.mounted()]
 
 harddiskmanager = HarddiskManager()
-
-