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