lib/python/Components/Harddisk.py

   1 import os
   2
   3 def tryOpen(filename):
   4         try:
   5                 procFile = open(filename)
   6         except IOError:
   7                 return ""
   8         return procFile
   9
  10 def num2prochdx(num):
  11         return "/proc/ide/hd" + ("a","b","c","d","e","f","g","h","i")[num] + "/"
  12
  13 class Harddisk:
  14         def __init__(self, index):
  15                 self.index = index
  16
  17                 host = self.index / 4
  18                 bus = (self.index & 2)
  19                 target = (self.index & 1)
  20
  21                 self.prochdx = num2prochdx(index)
  22                 self.devidex = "/dev/ide/host%d/bus%d/target%d/lun0/" % (host, bus, target)
  23
  24         def getIndex(self):
  25                 return self.index
  26
  27         def bus(self):
  28                 ret = ""
  29
  30                 if self.index & 2:
  31                         ret = "External (CF) - "
  32                 else:
  33                         ret = "Internal - "
  34
  35                 if self.index & 1:
  36                         return ret + "Slave"
  37                 else:
  38                         return ret + "Master"
  39
  40         def capacity(self):
  41                 procfile = tryOpen(self.prochdx + "capacity")
  42
  43                 if procfile == "":
  44                         return ""
  45
  46                 line = procfile.readline()
  47                 procfile.close()
  48
  49                 try:
  50                         cap = int(line)
  51                 except:
  52                         return ""
  53
  54                 cap = cap / 1000 * 512 / 1000
  55
  56                 return "%d.%03d GB" % (cap/1024, cap%1024)
  57
  58         def model(self):
  59                 procfile = tryOpen(self.prochdx + "model")
  60
  61                 if procfile == "":
  62                         return ""
  63
  64                 line = procfile.readline()
  65                 procfile.close()
  66
  67                 return line.strip()
  68
  69         def free(self):
  70                 procfile = tryOpen("/proc/mounts")
  71
  72                 if procfile == "":
  73                         return -1
  74
  75                 free = -1
  76                 while 1:
  77                         line = procfile.readline()
  78                         if line == "":
  79                                 break
  80                         if line.startswith(self.devidex):
  81                                 parts = line.strip().split(" ")
  82                                 try:
  83                                         stat = os.statvfs(parts[1])
  84                                 except OSError:
  85                                         continue
  86                                 free = stat.f_bfree/1000 * stat.f_bsize/1000
  87                                 break
  88                 procfile.close()
  89                 return free
  90
  91         def numPartitions(self):
  92                 try:
  93                         idedir = os.listdir(self.devidex)
  94                 except OSError:
  95                         return -1
  96                 numPart = -1
  97                 for filename in idedir:
  98                         if filename.startswith("disc"):
  99                                 numPart += 1
 100                         if filename.startswith("part"):
 101                                 numPart += 1
 102                 return numPart
 103
 104         def unmount(self):
 105                 cmd = "/bin/umount " + self.devidex + "part*"
 106                 res = os.system(cmd)
 107                 return (res >> 8)
 108
 109         def createPartition(self):
 110                 cmd = "/sbin/sfdisk -f " + self.devidex + "disc"
 111                 sfdisk = os.popen(cmd, "w")
 112                 sfdisk.write("0,\n;\n;\n;\ny\n")
 113                 sfdisk.close()
 114                 return 0
 115
 116         def mkfs(self):
 117                 cmd = "/sbin/mkfs.ext3 -T largefile -m0 " + self.devidex + "part1"
 118                 res = os.system(cmd)
 119                 return (res >> 8)
 120
 121         def mount(self):
 122                 cmd = "/bin/mount -t ext3 " + self.devidex + "part1 /hdd"
 123                 res = os.system(cmd)
 124                 return (res >> 8)
 125
 126         def createMovieFolder(self):
 127                 res = os.system("mkdir /hdd/movies")
 128                 return (res >> 8)
 129
 130         def initialize(self):
 131                 if self.unmount() != 0:
 132                         return -5
 133
 134                 if self.createPartition() != 0:
 135                         return -1
 136
 137                 if self.mkfs() != 0:
 138                         return -2
 139
 140                 if self.mount() != 0:
 141                         return -3
 142
 143                 if self.createMovieFolder() != 0:
 144                         return -4
 145
 146                 return 0
 147
 148 def existHDD(num):
 149         mediafile = tryOpen(num2prochdx(num) + "media")
 150
 151         if mediafile == "":
 152                 return -1
 153
 154         line = mediafile.readline()
 155         mediafile.close()
 156
 157         if line.startswith("disk"):
 158                 return 1
 159
 160         return -1
 161
 162 class HarddiskManager:
 163         def __init__(self):
 164                 hddNum = 0
 165                 self.hdd = [ ]
 166                 while 1:
 167                         if existHDD(hddNum) == 1:
 168                                 self.hdd.append(Harddisk(hddNum))
 169                         hddNum += 1
 170
 171                         if hddNum > 8:
 172                                 break
 173
 174         def HDDCount(self):
 175                 cnt = 0
 176                 for hd in self.hdd:
 177                         cnt = cnt + 1
 178                 return cnt
 179
 180         def HDDList(self):
 181                 list = [ ]
 182                 for hd in self.hdd:
 183                         hdd = hd.model() + " ("
 184                         hdd += hd.bus()
 185                         cap = hd.capacity()
 186                         if cap != "":
 187                                 hdd += ", " + cap
 188                         hdd += ")"
 189                         list.append((hdd, hd))
 190
 191                 return list
 192
 193 harddiskmanager = HarddiskManager()
 194
 195