/[gli]/trunk/src/GLIStorageDevice.py
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1import commands, string, re, os, parted 1import commands, string, re, os, parted
2from decimal import Decimal
2 3
4MEGABYTE = 1024 * 1024
5
6archinfo = { 'sparc': { 'fixedparts': [ { 'minor': 3, 'type': "wholedisk" } ], 'disklabel': 'sun', 'extended': False },
7 'hppa': { 'fixedparts': [ { 'minor': 1, 'type': "boot" } ], 'disklabel': 'msdos', 'extended': False },
8 'x86': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
9 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False }
10 }
11
12##
13# This class provides a partitioning abstraction for the frontends
3class Device: 14class Device:
4 "Class representing a partitionable device." 15 "Class representing a partitionable device."
5 16
6 _device = None 17 _device = None
7 _partitions = None 18 _partitions = None
11 _cylinder_bytes = 0 22 _cylinder_bytes = 0
12 _sectors_in_cylinder = 0 23 _sectors_in_cylinder = 0
13 _parted_dev = None 24 _parted_dev = None
14 _parted_disk = None 25 _parted_disk = None
15 _sector_bytes = 0 26 _sector_bytes = 0
16 27 _total_mb = 0
28 _arch = None
29
30 ##
31 # Initialization function for GLIStorageDevice class
32 # @param device Device node (e.g. /dev/hda) of device being represented
33 # @param arch="x86" Architecture that we're partition for (defaults to 'x86' for now)
17 def __init__(self, device): 34 def __init__(self, device, arch="x86"):
18 self._device = device 35 self._device = device
19 self._partitions = {} 36 self._partitions = {}
20 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512} 37 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512}
21 self._total_bytes = 0 38 self._total_bytes = 0
22 self._cylinder_bytes = 0 39 self._cylinder_bytes = 0
40 self._arch = arch
23 self._parted_dev = parted.PedDevice.get(self._device) 41 self._parted_dev = parted.PedDevice.get(self._device)
24 self._parted_disk = parted.PedDisk.new(self._parted_dev) 42 self._parted_disk = parted.PedDisk.new(self._parted_dev)
25 self.set_disk_geometry_from_disk() 43 self.set_disk_geometry_from_disk()
26 44
45 ##
46 # Sets disk geometry info from disk. This function is used internally by __init__()
27 def set_disk_geometry_from_disk(self): 47 def set_disk_geometry_from_disk(self):
28 self._total_bytes = self._parted_dev.length * self._parted_dev.sector_size 48 self._total_bytes = self._parted_dev.length * self._parted_dev.sector_size
29# if string.strip(commands.getoutput("echo " + self._device + " | grep '/hd'")) == self._device: # IDE
30# proc_dir = "/proc/ide/" + commands.getoutput("echo " + self._device + " | cut -d '/' -f 3")
31# proc_dir = string.strip(proc_dir)
32# heads = commands.getoutput("cat " + proc_dir + "/geometry | grep logical | cut -d '/' -f 2")
33# sectors = commands.getoutput("cat " + proc_dir + "/geometry | grep logical | cut -d '/' -f 3")
34# total_sectors = commands.getoutput("cat " + proc_dir + "/capacity")
35# cylinders = int(total_sectors) / (int(heads) * int(sectors))
36# self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = int(heads), int(sectors), int(cylinders)
37# else: #SCSI
38 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders 49 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders
39
40 self._sector_bytes = self._parted_dev.sector_size 50 self._sector_bytes = self._parted_dev.sector_size
41 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes 51 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes
42# self._total_sectors = self._geometry['cylinders'] * self._geometry['heads'] * self._geometry['sectors']
43 self._total_sectors = self._parted_dev.length 52 self._total_sectors = self._parted_dev.length
44 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors'] 53 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors']
54 self._total_mb = int(self._total_bytes / MEGABYTE)
45 55
56 ##
57 # Sets partition info from disk.
46 def set_partitions_from_disk(self): 58 def set_partitions_from_disk(self):
59 last_part = 0
60 last_log_part = 4
47 parted_part = self._parted_disk.next_partition() 61 parted_part = self._parted_disk.next_partition()
48 while parted_part != None: 62 while parted_part:
63 part_mb = int((parted_part.geom.end - parted_part.geom.start + 1) * self._sector_bytes / MEGABYTE)
49 if parted_part.num < 1: 64 if parted_part.num >= 1:
50 parted_part = self._parted_disk.next_partition(parted_part)
51 continue
52 fs_type = ""
53 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
54 if parted_part.type == 2: fs_type = "extended"
55 self._partitions[int(parted_part.num)] = Partition(self, parted_part.num, '', parted_part.geom.start, parted_part.geom.end, (parted_part.geom.end - parted_part.geom.start), fs_type, format=False, existing=True)
56 parted_part = self._parted_disk.next_partition(parted_part)
57
58 def set_partitions_from_install_profile_structure(self, ips):
59 for part in ips:
60 tmppart = ips[part]
61 existing = False
62 parted_part = self._parted_disk.get_partition(part)
63 if parted_part != None:
64 start = parted_part.geom.start / self._sectors_in_cylinder
65 end = parted_part.geom.end / self._sectors_in_cylinder
66 fs_type = "" 65 fs_type = ""
67 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name 66 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
68 if parted_part.type == 2: fs_type = "extended" 67 if parted_part.type == 2: fs_type = "extended"
68 if archinfo[self._arch]['extended'] and parted_part.num > 4:
69 last_log_part = parted_part.num
70 else:
71 last_part = parted_part.num
72 self._partitions[int(parted_part.num)] = Partition(self, parted_part.num, part_mb, parted_part.geom.start, parted_part.geom.end, fs_type, format=False, existing=True)
73 elif parted_part.type_name == "free":
74 parent_part = self.get_partition_at(parted_part.geom.start, ignore_extended=0)
75 if parent_part:
76 self._partitions[Decimal(str(float(last_log_part+0.9)))] = Partition(self, Decimal(str(float(last_log_part+0.9))), part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
77 last_log_part += 1
78 else:
79 self._partitions[Decimal(str(float(last_part+0.1)))] = Partition(self, Decimal(str(float(last_part+0.1))), part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
80 last_part += 1
81 parted_part = self._parted_disk.next_partition(parted_part)
82
83 ##
84 # Imports partition info from the install profile partition structure (currently does nothing)
85 # @param ips Parameter structure returned from install_profile.get_partition_tables()
86 def set_partitions_from_install_profile_structure(self, ips):
87 pass
88# for part in ips:
89# tmppart = ips[part]
90# existing = False
91# parted_part = self._parted_disk.get_partition(part)
92# if parted_part != None:
93# start = parted_part.geom.start / self._sectors_in_cylinder
94# end = parted_part.geom.end / self._sectors_in_cylinder
95# fs_type = ""
96# if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
97# if parted_part.type == 2: fs_type = "extended"
69 if int(tmppart['start']) == int(start) and int(tmppart['end']) == int(end) and tmppart['type'] == fs_type and tmppart['format'] == False: 98# if int(tmppart['start']) == int(start) and int(tmppart['end']) == int(end) and tmppart['type'] == fs_type and tmppart['format'] == False:
70 existing = True 99# existing = True
71 self._partitions[int(part)] = Partition(self, part, '', tmppart['start'], tmppart['end'], 0, tmppart['type'], mountopts=tmppart['mountopts'], mountpoint=tmppart['mountpoint'], format=tmppart['format'], existing=(not tmppart['format'])) 100# self._partitions[int(part)] = Partition(self, part, '', tmppart['start'], tmppart['end'], 0, tmppart['type'], mountopts=tmppart['mountopts'], mountpoint=tmppart['mountpoint'], format=tmppart['format'], existing=(not tmppart['format']))
72 101
102 ##
103 # Returns name of device (e.g. /dev/hda) being represented
73 def get_device(self): 104 def get_device(self):
74 return self._device 105 return self._device
75 106
107 ##
108 # Combines free space and closes gaps in minor numbers. This is used internally
76 def clear_partitions(self): 109 def tidy_partitions(self):
77 self._partitions = {} 110 last_minor = 0
111 last_log_minor = 4
112 last_free = 0
113 last_log_free = 0
114 parts = self._partitions.keys()
115 parts.sort()
116 for part in parts:
117 if archinfo[self._arch]['extended'] and part > 4: break
118 tmppart = self._partitions[part]
119 if tmppart.get_type() == "extended":
120 for part_log in parts:
121 if part_log < Decimal("4.9"): continue
122 tmppart_log = self._partitions[part_log]
123 if tmppart_log.get_type() == "free":
124 if last_log_minor < last_log_free:
125 self._partitions[last_log_free].set_mb(self._partitions[last_log_free].get_mb()+tmppart_log.get_mb())
126 del self._partitions[part_log]
127 else:
128 if not last_log_free:
129 last_log_free = Decimal(str(last_log_minor + 0.9))
130 tmppart_log.set_minor(last_log_free)
131 self._partitions[last_log_free] = tmppart_log
132 if part_log != last_log_free: del self._partitions[part_log]
133 continue
134 last_log_free = part_log
135 else:
136 if part_log > (last_log_minor + 1):
137 tmppart_log.set_minor(last_log_minor + 1)
138 last_log_minor = last_log_minor + 1
139 self._partitions[last_log_minor] = tmppart_log
140 del self._partitions[part_log]
141 continue
142 last_log_minor = part_log
143 if tmppart.get_type() == "free":
144 if last_minor < last_free:
145 self._partitions[last_free].set_mb(self._partitions[last_free].get_mb()+tmppart.get_mb())
146 del self._partitions[part]
147 else:
148 if not last_free:
149 last_free = Decimal(str(last_minor + 0.1))
150 tmppart.set_minor(last_free)
151 self._partitions[last_free] = tmppart
152 if part != last_free: del self._partitions[part]
153 continue
154 last_free = part
155 else:
156 if part > (last_minor + 1):
157 tmppart.set_minor(last_minor + 1)
158 last_minor = last_minor + 1
159 self._partitions[last_minor] = tmppart
160 del self._partitions[part]
161 continue
162 last_minor = part
78 163
164 ##
165 # Adds a new partition to the partition info
166 # @param free_minor minor of unallocated space partition is being created in
167 # @param mb size of partition in MB
168 # @param start Start sector (only used for existing partitions)
169 # @param end End sector (only used for existing partitions)
170 # @param type Partition type (ext2, ext3, fat32, linux-swap, free, extended, etc.)
171 # @param mountpoint='' Partition mountpoint
172 # @param mountopts='' Partition mount options
79 def add_partition(self, minor, start, end, type, mountpoint='', mountopts=''): 173 def add_partition(self, free_minor, mb, start, end, type, mountpoint='', mountopts=''):
80 free_start, free_end = self.get_free_space(start) 174 free_minor = Decimal(str(free_minor))
81 minor = int(minor) 175 new_minor = int(free_minor) + 1
82 if not free_end: 176# print "add_partition(): free_minor=" + str(free_minor) + ", new_minor=" + str(new_minor)
83 return False
84 if self._partitions.has_key(minor): 177 if self._partitions.has_key(new_minor):
85 parts = self._partitions.keys() 178 parts = self._partitions.keys()
86 parts.sort() 179 parts.sort()
87 parts.reverse() 180 parts.reverse()
88 hole_at = 0 181 hole_at = 0
89 for i in range(1, parts[0]+1): 182 for i in range(1, parts[0]+1):
90 if i <= minor: continue 183 if i <= new_minor: continue
91 if not self._partitions.has_key(int(i)): 184 if not self._partitions.has_key(i):
92 hole_at = i 185 hole_at = i
93 break 186 break
94 stopscooting = 0 187 stopscooting = 0
95 for i in parts: 188 for i in parts:
96 if stopscooting: break 189 if stopscooting: break
97 if (i >= hole_at) and (hole_at): continue 190 if i >= hole_at and hole_at: continue
98 if i >= minor: 191 if i >= new_minor:
99 self._partitions[i].set_minor(i+1) 192 self._partitions[i].set_minor(i+1)
100 self._partitions[i+1] = self._partitions[i] 193 self._partitions[i+1] = self._partitions[i]
101 if i == minor: stopscooting = 1 194 if i == new_minor: stopscooting = 1
195 if mb != self._partitions[free_minor].get_mb():
196 old_free_mb = self._partitions[free_minor].get_mb()
197 del self._partitions[free_minor]
198 if archinfo[self._arch]['extended'] and new_minor >= 5:
199 free_minor = Decimal(str(new_minor + 0.9))
200 else:
201 free_minor = Decimal(str(new_minor + 0.1))
202 self._partitions[free_minor] = Partition(self, free_minor, old_free_mb-mb, 0, 0, "free")
203# print "add_partition(): new part doesn't use all freespace. new free part is: minor=" + str(free_minor)
204 else:
205 del self._partitions[free_minor]
102 self._partitions[minor] = Partition(self, minor, '', start, end, 0, type, mountpoint=mountpoint, mountopts=mountopts) 206 self._partitions[new_minor] = Partition(self, new_minor, mb, start, end, type, mountpoint=mountpoint, mountopts=mountopts)
207 if type == "extended":
208 self._partitions[Decimal("4.9")] = Partition(self, Decimal("4.9"), mb, 0, 0, "free")
209 self.tidy_partitions()
103 210
211 ##
212 # Removes partition from partition info
213 # @param minor Minor of partition to remove
104 def remove_partition(self, minor): 214 def remove_partition(self, minor):
215 tmppart = self._partitions[int(minor)]
216 free_minor = 0
217 if tmppart.is_logical():
218 free_minor = Decimal(str(float(minor)-0.1))
219 else:
220 free_minor = Decimal(str(float(minor)-0.9))
221 self._partitions[free_minor] = Partition(self, free_minor, tmppart.get_mb(), 0, 0, "free", format=False, existing=False)
105 del self._partitions[int(minor)] 222 del self._partitions[int(minor)]
223 self.tidy_partitions()
106 224
225 ##
226 # Returns free space (no longer used)
227 # @param start Start sector for search
107 def get_free_space(self, start): 228 def get_free_space(self, start):
108 GAP_SIZE = 100 229 GAP_SIZE = 100
109 parts = self._partitions.keys() 230 parts = self._partitions.keys()
110 parts.sort() 231 parts.sort()
111 lastend_pri = 0 232 lastend_pri = 0
138 if free_start == -1 and lastend_pri < self._total_sectors: 259 if free_start == -1 and lastend_pri < self._total_sectors:
139 free_start = lastend_pri 260 free_start = lastend_pri
140 free_end = self._total_sectors 261 free_end = self._total_sectors
141 return (free_start, free_end) 262 return (free_start, free_end)
142 263
264 ##
265 # Gets partition containing a certain sector (no longer used)
266 # @param sector Sector to look at
267 # @param ignore_extended=1 Ignore extended partitions
143 def get_partition_at(self, sector, ignore_extended=1): 268 def get_partition_at(self, sector, ignore_extended=1):
144 parts = self._partitions.keys() 269 parts = self._partitions.keys()
145 parts.sort() 270 parts.sort()
146 for part in parts: 271 for part in parts:
147 tmppart = self._partitions[part] 272 tmppart = self._partitions[part]
148 if ignore_extended and tmppart.is_extended(): continue 273 if ignore_extended and tmppart.is_extended(): continue
149 if (sector >= tmppart.get_start()) and (sector <= tmppart.get_end()): 274 if (sector >= tmppart.get_start()) and (sector <= tmppart.get_end()):
150 return part 275 return part
151 return 0 276 return 0
152 277
278 ##
279 # Returns free minor (no longer used)
280 # @param start Parameter description
281 # @param end Parameter description
153 def get_free_minor_at(self, start, end): 282 def get_free_minor_at(self, start, end):
154 parts = self._partitions.keys() 283 parts = self._partitions.keys()
155 parts.sort() 284 parts.sort()
156 minor = 1 285 minor = 1
157 lastpart = 0 286 lastpart = 0
177 break 306 break
178 minor = part + 1 307 minor = part + 1
179 lastpart = part 308 lastpart = part
180 return minor 309 return minor
181 310
311 ##
312 # Returns an ordered list (disk order) of partition minors
182 def get_ordered_partition_list(self): 313 def get_ordered_partition_list(self):
183 parts = self._partitions.keys() 314 parts = self._partitions.keys()
184 parts.sort() 315 parts.sort()
185 partlist = [] 316 partlist = []
186 free_start, free_end = self.get_free_space(0) 317 tmppart = None
187 tmppart = None
188 tmppart_log = None 318 tmppart_log = None
189 for part in parts: 319 for part in parts:
190 if part > 4: break 320 if archinfo[self._arch]['extended'] and part > Decimal("4.1"): break
191 tmppart = self._partitions[part] 321 tmppart = self._partitions[part]
192 if free_end < tmppart.get_start() and not free_start == -1:
193 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
194 free_start, free_end = self.get_free_space(free_end)
195 newitem = self._device + str(part) + ": " + str(tmppart.get_start()) + "-" + str(tmppart.get_end())
196 if tmppart.is_extended(): newitem = newitem + " extended"
197 partlist.append(newitem) 322 partlist.append(part)
198 if tmppart.is_extended(): 323 if tmppart.is_extended():
199 for part_log in parts: 324 for part_log in parts:
200 if part_log < 5: continue 325 if part_log < Decimal("4.9"): continue
201 tmppart_log = self._partitions[part_log] 326 tmppart_log = self._partitions[part_log]
202 if free_end < tmppart_log.get_start() and free_end <= tmppart.get_end() and not free_start == -1:
203 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
204 free_start, free_end = self.get_free_space(free_end)
205 newitem = self._device + str(part_log) + ": " + str(tmppart_log.get_start()) + "-" + str(tmppart_log.get_end()) + " logical"
206 partlist.append(newitem) 327 partlist.append(part_log)
207 if ((tmppart_log == None) or (free_start > tmppart_log.get_end())) and free_start < tmppart.get_end():
208 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ") logical")
209 free_start, free_end = self.get_free_space(free_end)
210 if (tmppart == None) or (free_start > tmppart.get_end()):
211 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
212 return partlist 328 return partlist
213 329
330 ##
331 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables()
214 def get_install_profile_structure(self): 332 def get_install_profile_structure(self):
215 devdic = {} 333 devdic = {}
216 for part in self._partitions: 334 for part in self._partitions:
217 tmppart = self._partitions[part] 335 tmppart = self._partitions[part]
218 devdic[part] = { 'mb': 0, 'minor': int(part), 'start': tmppart.get_start(), 'end': tmppart.get_end(), 'type': tmppart.get_type(), 'mountpoint': tmppart.get_mountpoint(), 'mountopts': tmppart.get_mountopts(), 'format': tmppart.get_format() } 336 devdic[part] = { 'mb': tmppart.get_mb(), 'minor': float(part), 'origminor': tmppart.get_orig_minor(), 'start': tmppart.get_start(), 'end': tmppart.get_end(), 'type': tmppart.get_type(), 'mountpoint': tmppart.get_mountpoint(), 'mountopts': tmppart.get_mountopts(), 'format': tmppart.get_format() }
219 return devdic 337 return devdic
220 338
339 ##
340 # Returns the minor of the extended partition, if any
221 def get_extended_partition(self): 341 def get_extended_partition(self):
222 for part in self._partitions: 342 for part in self._partitions:
223 tmppart = self._partitions[part] 343 tmppart = self._partitions[part]
224 if tmppart.is_extended(): 344 if tmppart.is_extended():
225 return part 345 return part
226 return 0 346 return 0
227 347
348 ##
349 # Returns the number of sectors on the device
228 def get_num_sectors(self): 350 def get_num_sectors(self):
229 return int(self._total_sectors) 351 return int(self._total_sectors)
230 352
353 ##
354 # Returns the size of a cylinder in bytes
231 def get_cylinder_size(self): 355 def get_cylinder_size(self):
232 return int(self._cylinder_bytes) 356 return int(self._cylinder_bytes)
233 357
358 ##
359 # Returns the size of a sector in bytes
234 def get_sector_size(self): 360 def get_sector_size(self):
235 return int(self._sector_bytes) 361 return int(self._sector_bytes)
236 362
363 ##
364 # Returns the number of cylinders
237 def get_num_cylinders(self): 365 def get_num_cylinders(self):
238 return int(self._geometry['cylinders']) 366 return int(self._geometry['cylinders'])
239 367
368 ##
369 # Returns the total number of bytes on the device
240 def get_drive_bytes(self): 370 def get_drive_bytes(self):
241 return int(self._total_bytes) 371 return int(self._total_bytes)
242 372
373 ##
374 # Returns the total number of MB on the device
375 def get_total_mb(self):
376 return self._total_mb
377
378 ##
379 # Returns partition info dictionary
243 def get_partitions(self): 380 def get_partitions(self):
244 return self._partitions 381 return self._partitions
245 382
246 def print_partitions(self): 383 ##
247 for part in self._partitions.keys(): 384 # Prints disk geometry to STDOUT (no longer used)
248 print self._partitions[part].return_info()
249
250 def print_geometry(self): 385 def print_geometry(self):
251 print self._total_bytes, self._geometry 386 print self._total_bytes, self._geometry
252 387
388 ##
389 # Utility function for raising an exception
390 # @param message Error message
253 def _error(self, message): 391 def _error(self, message):
254 "Raises an exception" 392 "Raises an exception"
255 raise "DeviceObjectError", message 393 raise "DeviceObjectError", message
256 394
395 ##
396 # Utility function for running a command and returning it's output as a list
397 # @param cmd Command to run
257 def _run(self, cmd): 398 def _run(self, cmd):
258 "Runs a command and returns the output" 399 "Runs a command and returns the output"
259 400
260 # Run command 401 # Run command
261 output_string = commands.getoutput(cmd) 402 output_string = commands.getoutput(cmd)
275 output_string = output_string[index:] 416 output_string = output_string[index:]
276 417
277 # return output 418 # return output
278 return output_list 419 return output_list
279 420
280 421##
422# This class represents a partition within a GLIStorageDevice object
281class Partition: 423class Partition:
282 "Class representing a single partition within a Device object" 424 "Class representing a single partition within a Device object"
283 425
284 _device = None 426 _device = None
285 _minor = None 427 _minor = 0
286 _bootflag = None 428 _orig_minor = 0
287 _start = None 429 _start = 0
288 _end = None 430 _end = 0
289 _blocks = None
290 _type = None 431 _type = None
291 _mountpoint = None 432 _mountpoint = None
292 _mountopts = None 433 _mountopts = None
293 _format = None 434 _format = None
294 _resizeable = None 435 _resizeable = None
295 _min_sectors_for_resize = 0 436 _min_mb_for_resize = 0
437 _mb = 0
296 438
439 ##
440 # Initialization function for the Partition class
441 # @param device Parent GLIStorageDevice object
442 # @param minor Minor of partition
443 # @param mb Parameter Size of partition in MB
444 # @param start Parameter Start sector of partition
445 # @param end Parameter Start sector of partition
446 # @param type Parameter Type of partition (ext2, ext3, fat32, linux-swap, free, extended, etc.)
447 # @param mountpoint='' Mountpoint of partition
448 # @param mountopts='' Mount options of partition
449 # @param format=True Format partition
450 # @param existing=False This partition exists on disk
297 def __init__(self, device, minor, bootflag, start, end, blocks, type, mountpoint='', mountopts='', format=True, existing=False): 451 def __init__(self, device, minor, mb, start, end, type, mountpoint='', mountopts='', format=True, existing=False):
298 self._device = device 452 self._device = device
299 self._minor = int(minor) 453 self._minor = float(minor)
300 self._bootflag = bootflag 454 if existing: self._orig_minor = int(minor)
301 self._start = int(start) 455 self._start = int(start)
302 self._end = int(end) 456 self._end = int(end)
303 self._blocks = int(blocks)
304 if type == "": type = "unknown" 457 self._type = type or "unknown"
305 self._type = type
306 self._mountpoint = mountpoint 458 self._mountpoint = mountpoint
307 self._mountopts = mountopts 459 self._mountopts = mountopts
308 self._format = format 460 self._format = format
309 if blocks == 0: 461 self._mb = mb
310 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
311 if existing: 462 if existing:
463 self._orig_minor = self._minor
312 parted_part = device._parted_disk.get_partition(minor) 464 parted_part = device._parted_disk.get_partition(minor)
465 label_type = device._parted_disk.type.name
466 if label_type == "loop":
467 dev_node = device._device
468 else:
469 dev_node = device._device + str(minor)
313 if type == "ntfs": 470 if type == "ntfs":
314 min_bytes = int(commands.getoutput("ntfsresize -f --info " + device._device + str(minor) + " | grep -e '^You might resize' | sed -e 's/You might resize at //' -e 's/ bytes or .\+//'")) 471 min_bytes = int(commands.getoutput("ntfsresize -f --info " + dev_node + " | grep -e '^You might resize' | sed -e 's/You might resize at //' -e 's/ bytes or .\+//'"))
315 self._min_cylinders_for_resize = int(min_bytes / self._device._cylinder_bytes) + 1 472 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
316 self._resizeable == True 473 self._resizeable = True
317 elif type == "ext2" or type == "ext3": 474 elif type == "ext2" or type == "ext3":
318 block_size = string.strip(commands.getoutput("dumpe2fs -h " + device._device + str(minor) + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")) 475 block_size = string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'"))
319 free_blocks = string.strip(commands.getoutput("dumpe2fs -h " + device._device + str(minor) + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'")) 476 free_blocks = string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'"))
320 free_sec = int(int(block_size) * int(free_blocks) / self._device._sector_bytes) 477 free_bytes = int(block_size * free_blocks)
321 free_sec = free_sec - 2000 # just to be safe 478 # can't hurt to pad (the +50) it a bit since this is really just a guess
322 self._min_sectors_for_resize = (self._end - self._start + 1) - free_sec 479 self._min_mb_for_resize = self._mb - int(free_bytes / MEGABYTE) + 50
323 self._resizeable == True 480 self._resizeable = True
324 else: 481 else:
325 parted_part = self._device._parted_disk.get_partition(self._minor) 482 parted_part = self._device._parted_disk.get_partition(int(self._minor))
326 try: 483 try:
327 parted_fs = parted_part.geom.file_system_open() 484 parted_fs = parted_part.geom.file_system_open()
328 except: 485 except:
329 self._resizeable = False 486 self._resizeable = False
330 return 487 return
331 resize_constraint = parted_fs.get_resize_constraint() 488 resize_constraint = parted_fs.get_resize_constraint()
332 min_size = resize_constraint.min_size 489 min_bytes = resize_constraint.min_size * self._device._sector_bytes
333 if int(min_size) != min_size: min_size = int(min_size) + 1 490 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
334 self._min_sectors_for_resize = min_size
335 self._resizeable = True 491 self._resizeable = True
336 492
493 ##
494 # Returns whether or not the partition is extended
337 def is_extended(self): 495 def is_extended(self):
338 if self._type == "extended": 496 if self._type == "extended":
339 return True 497 return True
340 else: 498 else:
341 return False 499 return False
342 500
501 ##
502 # Returns whether or not the partition is logical
343 def is_logical(self): 503 def is_logical(self):
344 part = self._device.get_partition_at(self._start, ignore_extended=0) 504 if self._type == "free":
345 if part and self._device._partitions[part].is_extended() and not part == self._minor: 505 if int(self._minor) + Decimal("0.9") == Decimal(str(self._minor)):
506 return True
507 else:
508 return False
509 elif archinfo[self._device._arch]['extended'] and self._minor > 4:
346 return True 510 return True
511 else:
347 return False 512 return False
348 513
514 ##
515 # Returns a list of logical partitions if this is an extended partition
349 def get_logicals(self): 516 def get_logicals(self):
350 if not self.is_extended(): 517 if not self.is_extended():
351 return None 518 return None
352 logicals = [] 519 logicals = []
353 start = self._start 520 start = self._start
357 if part < 5: continue 524 if part < 5: continue
358 logicals.append(part) 525 logicals.append(part)
359 logicals.sort() 526 logicals.sort()
360 return logicals 527 return logicals
361 528
529 ##
530 # Returns the extened parent partition if this is a logical partition (no longer used)
362 def get_extended_parent(self): 531 def get_extended_parent(self):
363 if not self.is_logical(): 532 if not self.is_logical():
364 return None 533 return None
365 else: 534 else:
366 return self._device.get_partition_at(self._start, ignore_extended=0) 535 return self._device.get_partition_at(self._start, ignore_extended=0)
367 536
537 ##
538 # Sets the start sector for the partition
539 # @param start Start sector
368 def set_start(self, start): 540 def set_start(self, start):
369 self._start = int(start) 541 self._start = int(start)
370 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
371 542
543 ##
544 # Returns the start sector for the partition
372 def get_start(self): 545 def get_start(self):
373 return int(self._start) 546 return int(self._start)
374 547
548 ##
549 # Sets the end sector of the partition
550 # @param end End sector
375 def set_end(self, end): 551 def set_end(self, end):
376 self._end = int(end) 552 self._end = int(end)
377 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
378 553
554 ##
555 # Returns end sector for the partition
379 def get_end(self): 556 def get_end(self):
380 return int(self._end) 557 return int(self._end)
381 558
559 ##
560 # Returns size of partition in MB
561 def get_mb(self):
562 return int(self._mb)
563
564 ##
565 # Sets size of partition in MB
566 # @param mb Parameter description
567 def set_mb(self, mb):
568 self._mb = int(mb)
569
570 ##
571 # Sets type of partition
572 # @param type Parameter description
382 def set_type(self, type): 573 def set_type(self, type):
383 self._type = type 574 self._type = type
384 575
576 ##
577 # Returns type of partition
385 def get_type(self): 578 def get_type(self):
386 return self._type 579 return self._type
387 580
581 ##
582 # Returns parent GLIStorageDevice object
388 def get_device(self): 583 def get_device(self):
389 return self._device 584 return self._device
390 585
586 ##
587 # Sets minor of partition
588 # @param minor New minor
391 def set_minor(self, minor): 589 def set_minor(self, minor):
392 self._minor = int(minor) 590 self._minor = float(minor)
393 591
592 ##
593 # Returns minor of partition
394 def get_minor(self): 594 def get_minor(self):
395 return int(self._minor) 595 return float(self._minor)
396 596
597 ##
598 # Sets the original minor of the partition
599 # @param orig_minor Parameter description
600 def set_orig_minor(self, orig_minor):
601 self._orig_minor = int(orig_minor)
602
603 ##
604 # Returns the original minor of the partition
605 def get_orig_minor(self):
606 return self._orig_minor
607
608 ##
609 # Sets the mountpoint for the partition
610 # @param mountpoint Mountpoint
397 def set_mountpoint(self, mountpoint): 611 def set_mountpoint(self, mountpoint):
398 self._mountpoint = mountpoint 612 self._mountpoint = mountpoint
399 613
614 ##
615 # Returns the mountpoint for the partition
400 def get_mountpoint(self): 616 def get_mountpoint(self):
401 return self._mountpoint 617 return self._mountpoint
402 618
619 ##
620 # Sets the mount options for the partition
621 # @param mountopts Mount options
403 def set_mountopts(self, mountopts): 622 def set_mountopts(self, mountopts):
404 self._mountopts = mountopts 623 self._mountopts = mountopts
405 624
625 ##
626 # Returns the mount options for the partition
406 def get_mountopts(self): 627 def get_mountopts(self):
407 return self._mountopts 628 return self._mountopts
408 629
630 ##
631 # Set whether to format the partition
632 # @param format Format this partition (True/False)
409 def set_format(self, format): 633 def set_format(self, format):
410 self._format = format 634 self._format = format
411 635
636 ##
637 # Returns whether to format the partition
412 def get_format(self): 638 def get_format(self):
413 return self._format 639 return self._format
414 640
415 def get_blocks(self): 641 ##
416 return int(self._blocks) 642 # Returns whether the partition is resizeable
643 def is_resizeable(self):
644 return self._resizeable
417 645
646 ##
647 # Returns minimum MB for resize
418 def get_min_sectors_for_resize(self): 648 def get_min_mb_for_resize(self):
419 if self.is_extended(): 649# if self.is_extended():
420 min_size = self._start 650# min_size = self._start
421 for part in self._device._partitions: 651# for part in self._device._partitions:
422 if part < 5: continue 652# if part < 5: continue
423 if part.get_end > min_size: min_size = part.get_end() 653# if part.get_end > min_size: min_size = part.get_end()
424 return min_size 654# return min_size
655# else:
656 if self._resizeable:
657 return self._min_mb_for_resize
425 else: 658 else:
426 return self._min_sectors_for_resize 659 return -1
427 660
661 ##
662 # Returns maximum MB for resize
428 def get_max_sectors_for_resize(self): 663 def get_max_mb_for_resize(self):
429 free_start, free_end = self._device.get_free_space(self._end) 664 free_minor = 0
430 if free_end == -1: return self._end
431 if free_start - 1 == self._end:
432 if self.is_logical(): 665 if self.is_logical():
433 if free_end <= self._device._partitions[self.get_extended_parent()]._end: 666 free_minor = Decimal(str(self._minor + 0.9))
434 return free_end - self._start
435 else:
436 return self._end - self._start
437 else: 667 else:
438 return free_end - self._start 668 free_minor = Decimal(str(self._minor + 0.1))
669 if free_minor in self._device._partitions:
670 return self._mb + self._device._partitions[free_minor]._mb
671 else:
672 return self._mb
439 673
674 ##
675 # Resizes the partition (ignore)
676 # @param start New start sector
677 # @param end New end sector
440 def resize(self, start, end): 678 def resize(self, start, end):
441 part_at_start = self._device.get_partition_at(int(start)) 679 part_at_start = self._device.get_partition_at(int(start))
442 part_at_end = self._device.get_partition_at(int(end)) 680 part_at_end = self._device.get_partition_at(int(end))
443 logicals = None 681 logicals = None
444 if self.is_logical(): 682 if self.is_logical():
458 return 0 696 return 0
459 self.set_start(start) 697 self.set_start(start)
460 self.set_end(end) 698 self.set_end(end)
461 return 1 699 return 1
462 700
701 ##
702 # Utility function to raise an exception
703 # @param message Error message
463 def _error(self, message): 704 def _error(self, message):
464 "Raises an exception"
465 raise "PartitionObjectError", message 705 raise "PartitionObjectError", message
466
467 706
707##
708# Returns a list of detected partitionable devices
468def detect_devices(): 709def detect_devices():
469 "Returns a list of partitionable devices on the system"
470
471 devices = [] 710 devices = []
472 711
473 # Make sure sysfs exists 712 # Make sure sysfs exists
474 if not os.path.exists("/sys/bus"): 713 if not os.path.exists("/sys/bus"):
475 raise Exception, "no sysfs found (you MUST use a kernel >2.6)" 714 raise Exception, "no sysfs found (you MUST use a kernel >2.6)"

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