/[gli]/trunk/src/GLIStorageDevice.py
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Contents of /trunk/src/GLIStorageDevice.py

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Revision 624 - (hide annotations) (download) (as text)
Sun Jun 5 19:47:20 2005 UTC (15 years, 4 months ago) by agaffney
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Added GLISD.get_model()

1 agaffney 535 import commands, string, os, parted
2 agaffney 556 from GLIException import *
3 agaffney 595 import GLIUtility
4 agaffney 107
5 agaffney 492 MEGABYTE = 1024 * 1024
6    
7 agaffney 497 archinfo = { 'sparc': { 'fixedparts': [ { 'minor': 3, 'type': "wholedisk" } ], 'disklabel': 'sun', 'extended': False },
8     'hppa': { 'fixedparts': [ { 'minor': 1, 'type': "boot" } ], 'disklabel': 'msdos', 'extended': False },
9     'x86': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
10 agaffney 595 'amd64': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
11 agaffney 497 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False }
12     }
13    
14 agaffney 513 ##
15     # This class provides a partitioning abstraction for the frontends
16 agaffney 107 class Device:
17     "Class representing a partitionable device."
18    
19     _device = None
20     _partitions = None
21     _geometry = None
22     _total_bytes = 0
23     _total_sectors = 0
24     _cylinder_bytes = 0
25     _sectors_in_cylinder = 0
26     _parted_dev = None
27     _parted_disk = None
28 agaffney 212 _sector_bytes = 0
29 agaffney 492 _total_mb = 0
30     _arch = None
31 agaffney 595 _disklabel = None
32 agaffney 492
33 agaffney 509 ##
34 agaffney 513 # Initialization function for GLIStorageDevice class
35     # @param device Device node (e.g. /dev/hda) of device being represented
36     # @param arch="x86" Architecture that we're partition for (defaults to 'x86' for now)
37 agaffney 596 def __init__(self, device, arch="x86", set_geometry=True):
38 agaffney 107 self._device = device
39     self._partitions = {}
40     self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512}
41     self._total_bytes = 0
42     self._cylinder_bytes = 0
43 agaffney 492 self._arch = arch
44 agaffney 107 self._parted_dev = parted.PedDevice.get(self._device)
45 agaffney 595 try:
46     self._parted_disk = parted.PedDisk.new(self._parted_dev)
47     except:
48     self._parted_disk = self._parted_dev.disk_new_fresh(parted.disk_type_get(archinfo[self._arch]['disklabel']))
49     self._disklabel = self._parted_disk.type.name
50 agaffney 596 if set_geometry:
51     self.set_disk_geometry_from_disk()
52 agaffney 107
53 agaffney 509 ##
54 agaffney 513 # Sets disk geometry info from disk. This function is used internally by __init__()
55 agaffney 107 def set_disk_geometry_from_disk(self):
56     self._total_bytes = self._parted_dev.length * self._parted_dev.sector_size
57 agaffney 205 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders
58 agaffney 212 self._sector_bytes = self._parted_dev.sector_size
59     self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes
60     self._total_sectors = self._parted_dev.length
61 agaffney 107 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors']
62 agaffney 492 self._total_mb = int(self._total_bytes / MEGABYTE)
63 agaffney 107
64 agaffney 509 ##
65 agaffney 513 # Sets partition info from disk.
66 agaffney 107 def set_partitions_from_disk(self):
67 agaffney 492 last_part = 0
68     last_log_part = 4
69 agaffney 107 parted_part = self._parted_disk.next_partition()
70 agaffney 492 while parted_part:
71     part_mb = int((parted_part.geom.end - parted_part.geom.start + 1) * self._sector_bytes / MEGABYTE)
72     if parted_part.num >= 1:
73 agaffney 113 fs_type = ""
74     if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
75     if parted_part.type == 2: fs_type = "extended"
76 agaffney 501 if archinfo[self._arch]['extended'] and parted_part.num > 4:
77     last_log_part = parted_part.num
78     else:
79     last_part = parted_part.num
80 agaffney 492 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)
81     elif parted_part.type_name == "free":
82     parent_part = self.get_partition_at(parted_part.geom.start, ignore_extended=0)
83     if parent_part:
84 agaffney 530 self._partitions[last_log_part+0.9] = Partition(self, last_log_part+0.9, part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
85 agaffney 492 last_log_part += 1
86     else:
87 agaffney 530 self._partitions[last_part+0.1] = Partition(self, last_part+0.1, part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
88 agaffney 492 last_part += 1
89     parted_part = self._parted_disk.next_partition(parted_part)
90 agaffney 107
91 agaffney 509 ##
92 agaffney 513 # Imports partition info from the install profile partition structure (currently does nothing)
93     # @param ips Parameter structure returned from install_profile.get_partition_tables()
94 agaffney 492 def set_partitions_from_install_profile_structure(self, ips):
95 agaffney 596 for part in ips:
96     tmppart = ips[part]
97     existing = False
98     if tmppart['origminor'] and not tmppart['format']:
99     existing = True
100 agaffney 611 self._partitions[tmppart['minor']] = Partition(self, tmppart['minor'], tmppart['mb'], tmppart['start'], tmppart['end'], tmppart['type'], format=tmppart['format'], origminor=tmppart['origminor'], existing=existing, mountpoint=tmppart['mountpoint'], mountopts=tmppart['mountopts'])
101 agaffney 492
102 agaffney 509 ##
103 agaffney 513 # Returns name of device (e.g. /dev/hda) being represented
104 agaffney 107 def get_device(self):
105     return self._device
106    
107 agaffney 509 ##
108 agaffney 513 # Combines free space and closes gaps in minor numbers. This is used internally
109 agaffney 494 def tidy_partitions(self):
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 agaffney 497 if archinfo[self._arch]['extended'] and part > 4: break
118 agaffney 494 tmppart = self._partitions[part]
119     if tmppart.get_type() == "extended":
120     for part_log in parts:
121 agaffney 530 if part_log < 4.9: continue
122 agaffney 494 tmppart_log = self._partitions[part_log]
123     if tmppart_log.get_type() == "free":
124 agaffney 495 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 agaffney 494 else:
128 agaffney 495 if not last_log_free:
129 agaffney 530 last_log_free = last_log_minor + 0.9
130 agaffney 544 else:
131     lost_log_free = part_log
132 agaffney 495 tmppart_log.set_minor(last_log_free)
133     self._partitions[last_log_free] = tmppart_log
134     if part_log != last_log_free: del self._partitions[part_log]
135     continue
136 agaffney 494 else:
137     if part_log > (last_log_minor + 1):
138     tmppart_log.set_minor(last_log_minor + 1)
139 agaffney 495 last_log_minor = last_log_minor + 1
140     self._partitions[last_log_minor] = tmppart_log
141     del self._partitions[part_log]
142     continue
143 agaffney 544 else:
144     last_log_minor = part_log
145 agaffney 494 if tmppart.get_type() == "free":
146 agaffney 495 if last_minor < last_free:
147     self._partitions[last_free].set_mb(self._partitions[last_free].get_mb()+tmppart.get_mb())
148     del self._partitions[part]
149 agaffney 494 else:
150 agaffney 495 if not last_free:
151 agaffney 530 last_free = last_minor + 0.1
152 agaffney 544 else:
153     last_free = part
154 agaffney 495 tmppart.set_minor(last_free)
155     self._partitions[last_free] = tmppart
156     if part != last_free: del self._partitions[part]
157     continue
158 agaffney 494 else:
159     if part > (last_minor + 1):
160     tmppart.set_minor(last_minor + 1)
161 agaffney 495 last_minor = last_minor + 1
162     self._partitions[last_minor] = tmppart
163     del self._partitions[part]
164     continue
165 agaffney 544 else:
166     last_minor = part
167 agaffney 494
168 agaffney 509 ##
169 agaffney 513 # Adds a new partition to the partition info
170     # @param free_minor minor of unallocated space partition is being created in
171     # @param mb size of partition in MB
172     # @param start Start sector (only used for existing partitions)
173     # @param end End sector (only used for existing partitions)
174     # @param type Partition type (ext2, ext3, fat32, linux-swap, free, extended, etc.)
175     # @param mountpoint='' Partition mountpoint
176     # @param mountopts='' Partition mount options
177 agaffney 492 def add_partition(self, free_minor, mb, start, end, type, mountpoint='', mountopts=''):
178 agaffney 530 free_minor = free_minor
179 agaffney 492 new_minor = int(free_minor) + 1
180 agaffney 494 # print "add_partition(): free_minor=" + str(free_minor) + ", new_minor=" + str(new_minor)
181 agaffney 492 if self._partitions.has_key(new_minor):
182 agaffney 107 parts = self._partitions.keys()
183     parts.sort()
184     parts.reverse()
185     hole_at = 0
186     for i in range(1, parts[0]+1):
187 agaffney 492 if i <= new_minor: continue
188     if not self._partitions.has_key(i):
189 agaffney 107 hole_at = i
190     break
191     stopscooting = 0
192     for i in parts:
193     if stopscooting: break
194 agaffney 492 if i >= hole_at and hole_at: continue
195     if i >= new_minor:
196 agaffney 107 self._partitions[i].set_minor(i+1)
197     self._partitions[i+1] = self._partitions[i]
198 agaffney 492 if i == new_minor: stopscooting = 1
199 agaffney 494 if mb != self._partitions[free_minor].get_mb():
200     old_free_mb = self._partitions[free_minor].get_mb()
201     del self._partitions[free_minor]
202 agaffney 497 if archinfo[self._arch]['extended'] and new_minor >= 5:
203 agaffney 530 free_minor = new_minor + 0.9
204 agaffney 494 else:
205 agaffney 530 free_minor = new_minor + 0.1
206 agaffney 494 self._partitions[free_minor] = Partition(self, free_minor, old_free_mb-mb, 0, 0, "free")
207     # print "add_partition(): new part doesn't use all freespace. new free part is: minor=" + str(free_minor)
208     else:
209     del self._partitions[free_minor]
210 agaffney 492 self._partitions[new_minor] = Partition(self, new_minor, mb, start, end, type, mountpoint=mountpoint, mountopts=mountopts)
211 agaffney 494 if type == "extended":
212 agaffney 530 self._partitions[4.9] = Partition(self, 4.9, mb, 0, 0, "free")
213 agaffney 494 self.tidy_partitions()
214 agaffney 107
215 agaffney 509 ##
216 agaffney 513 # Removes partition from partition info
217     # @param minor Minor of partition to remove
218 agaffney 107 def remove_partition(self, minor):
219 agaffney 492 tmppart = self._partitions[int(minor)]
220     free_minor = 0
221     if tmppart.is_logical():
222 agaffney 530 free_minor = minor-0.1
223 agaffney 492 else:
224 agaffney 530 free_minor = minor-0.9
225 agaffney 492 self._partitions[free_minor] = Partition(self, free_minor, tmppart.get_mb(), 0, 0, "free", format=False, existing=False)
226 agaffney 107 del self._partitions[int(minor)]
227 agaffney 494 self.tidy_partitions()
228 agaffney 107
229 agaffney 509 ##
230 agaffney 513 # Returns free space (no longer used)
231     # @param start Start sector for search
232 agaffney 107 def get_free_space(self, start):
233 agaffney 207 GAP_SIZE = 100
234 agaffney 107 parts = self._partitions.keys()
235     parts.sort()
236     lastend_pri = 0
237     lastend_log = 0
238     free_start = -1
239     free_end = -1
240 agaffney 205 if start > self._total_sectors: return (-1, -1)
241 agaffney 107 for part in parts:
242     if part > 4: break
243     tmppart = self._partitions[part]
244 agaffney 207 if (tmppart.get_start() > (lastend_pri + GAP_SIZE)) and (lastend_pri >= start):
245 agaffney 107 free_start = lastend_pri
246     free_end = tmppart.get_start() - 1
247     break
248     if tmppart.is_extended() and start < tmppart.get_end():
249     lastend_log = tmppart.get_start()
250     for part_log in parts:
251     if part_log < 5: continue
252     tmppart_log = self._partitions[part_log]
253 agaffney 207 if (tmppart_log.get_start() > (lastend_log + GAP_SIZE)) and (lastend_log >= start):
254 agaffney 107 free_start = lastend_log
255     free_end = tmppart_log.get_start() - 1
256     break
257     lastend_log = tmppart_log.get_end() + 1
258     if free_start == -1 and lastend_log < tmppart.get_end():
259     free_start = lastend_log
260     free_end = tmppart.get_end()
261 agaffney 112 break
262 agaffney 107 lastend_pri = tmppart.get_end() + 1
263 agaffney 205 if free_start == -1 and lastend_pri < self._total_sectors:
264 agaffney 107 free_start = lastend_pri
265 agaffney 205 free_end = self._total_sectors
266 agaffney 107 return (free_start, free_end)
267    
268 agaffney 509 ##
269 agaffney 513 # Gets partition containing a certain sector (no longer used)
270     # @param sector Sector to look at
271     # @param ignore_extended=1 Ignore extended partitions
272 agaffney 205 def get_partition_at(self, sector, ignore_extended=1):
273 agaffney 107 parts = self._partitions.keys()
274     parts.sort()
275     for part in parts:
276     tmppart = self._partitions[part]
277     if ignore_extended and tmppart.is_extended(): continue
278 agaffney 205 if (sector >= tmppart.get_start()) and (sector <= tmppart.get_end()):
279 agaffney 107 return part
280     return 0
281    
282 agaffney 509 ##
283 agaffney 513 # Returns free minor (no longer used)
284 agaffney 509 # @param start Parameter description
285     # @param end Parameter description
286 agaffney 107 def get_free_minor_at(self, start, end):
287     parts = self._partitions.keys()
288     parts.sort()
289     minor = 1
290     lastpart = 0
291     for part in parts:
292     if part > 4: break
293     tmppart = self._partitions[part]
294     if end < tmppart.get_start():
295     minor = part
296     if (minor - 1) > lastpart: minor = lastpart + 1
297     break
298     if tmppart.is_extended() and start < tmppart.get_end():
299     minor = 5
300     lastpart = 4
301     for part_log in parts:
302     if part_log < 5: continue
303     tmppart_log = self._partitions[part_log]
304     if end < tmppart_log.get_start():
305     minor = part_log
306     if (minor - 1) > lastpart: minor = lastpart + 1
307     break
308     minor = part_log + 1
309     lastpart = part_log
310     break
311     minor = part + 1
312     lastpart = part
313     return minor
314    
315 agaffney 509 ##
316 agaffney 513 # Returns an ordered list (disk order) of partition minors
317 agaffney 107 def get_ordered_partition_list(self):
318     parts = self._partitions.keys()
319     parts.sort()
320     partlist = []
321 agaffney 492 tmppart = None
322     for part in parts:
323 agaffney 530 if archinfo[self._arch]['extended'] and part > 4.1: break
324 agaffney 107 tmppart = self._partitions[part]
325 agaffney 492 partlist.append(part)
326 agaffney 107 if tmppart.is_extended():
327     for part_log in parts:
328 agaffney 530 if part_log < 4.9: continue
329 agaffney 492 partlist.append(part_log)
330 agaffney 107 return partlist
331    
332 agaffney 509 ##
333 agaffney 513 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables()
334 agaffney 107 def get_install_profile_structure(self):
335     devdic = {}
336     for part in self._partitions:
337     tmppart = self._partitions[part]
338 agaffney 492 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() }
339 agaffney 107 return devdic
340    
341 agaffney 509 ##
342 agaffney 513 # Returns the minor of the extended partition, if any
343 agaffney 183 def get_extended_partition(self):
344     for part in self._partitions:
345     tmppart = self._partitions[part]
346     if tmppart.is_extended():
347     return part
348 agaffney 184 return 0
349 agaffney 183
350 agaffney 509 ##
351 agaffney 624 # Returns the drive model
352     def get_model(self):
353     return self._parted_dev.model
354    
355     ##
356 agaffney 596 # Sets the disklabel type
357     def set_disklabel(self, disklabel):
358     self._disklabel = disklabel
359    
360     ##
361     # Returns the disklabel type
362     def get_disklabel(self):
363     return self._disklabel
364    
365     ##
366 agaffney 513 # Returns the number of sectors on the device
367 agaffney 107 def get_num_sectors(self):
368     return int(self._total_sectors)
369    
370 agaffney 509 ##
371 agaffney 513 # Returns the size of a cylinder in bytes
372 agaffney 107 def get_cylinder_size(self):
373     return int(self._cylinder_bytes)
374    
375 agaffney 509 ##
376 agaffney 513 # Returns the size of a sector in bytes
377 agaffney 212 def get_sector_size(self):
378     return int(self._sector_bytes)
379    
380 agaffney 509 ##
381 agaffney 513 # Returns the number of cylinders
382 agaffney 107 def get_num_cylinders(self):
383     return int(self._geometry['cylinders'])
384    
385 agaffney 509 ##
386 agaffney 513 # Returns the total number of bytes on the device
387 agaffney 107 def get_drive_bytes(self):
388     return int(self._total_bytes)
389    
390 agaffney 509 ##
391 agaffney 513 # Returns the total number of MB on the device
392 agaffney 492 def get_total_mb(self):
393     return self._total_mb
394    
395 agaffney 509 ##
396 agaffney 513 # Returns partition info dictionary
397 agaffney 107 def get_partitions(self):
398     return self._partitions
399    
400 agaffney 509 ##
401 agaffney 513 # Prints disk geometry to STDOUT (no longer used)
402 agaffney 107 def print_geometry(self):
403     print self._total_bytes, self._geometry
404    
405 agaffney 509 ##
406 agaffney 513 # Utility function for running a command and returning it's output as a list
407     # @param cmd Command to run
408 agaffney 107 def _run(self, cmd):
409     "Runs a command and returns the output"
410    
411     # Run command
412     output_string = commands.getoutput(cmd)
413    
414     # What we will return
415     output_list = []
416    
417     # As long as there is a new line in the output_string
418     while output_string.find("\n") != -1:
419    
420     # Find the \n in the string
421     index = output_string.find("\n") + 1
422    
423     # Add the line to the output and remove it from
424     # the output_string
425     output_list.append(output_string[:index])
426     output_string = output_string[index:]
427    
428     # return output
429     return output_list
430    
431 agaffney 513 ##
432     # This class represents a partition within a GLIStorageDevice object
433 agaffney 107 class Partition:
434     "Class representing a single partition within a Device object"
435    
436     _device = None
437 agaffney 492 _minor = 0
438     _orig_minor = 0
439     _start = 0
440     _end = 0
441 agaffney 107 _type = None
442     _mountpoint = None
443     _mountopts = None
444     _format = None
445     _resizeable = None
446 agaffney 523 _min_mb_for_resize = 0
447 agaffney 492 _mb = 0
448 agaffney 107
449 agaffney 509 ##
450 agaffney 514 # Initialization function for the Partition class
451     # @param device Parent GLIStorageDevice object
452     # @param minor Minor of partition
453     # @param mb Parameter Size of partition in MB
454     # @param start Parameter Start sector of partition
455     # @param end Parameter Start sector of partition
456     # @param type Parameter Type of partition (ext2, ext3, fat32, linux-swap, free, extended, etc.)
457     # @param mountpoint='' Mountpoint of partition
458     # @param mountopts='' Mount options of partition
459     # @param format=True Format partition
460     # @param existing=False This partition exists on disk
461 agaffney 596 def __init__(self, device, minor, mb, start, end, type, mountpoint='', mountopts='', format=True, existing=False, origminor=0):
462 agaffney 107 self._device = device
463 agaffney 492 self._minor = float(minor)
464 agaffney 107 self._start = int(start)
465     self._end = int(end)
466 agaffney 492 self._type = type or "unknown"
467 agaffney 107 self._mountpoint = mountpoint
468     self._mountopts = mountopts
469     self._format = format
470 agaffney 492 self._mb = mb
471 agaffney 596 self._orig_minor = origminor
472     if type != "free":
473     if existing and not origminor:
474     self._orig_minor = self._minor
475     self._minor = int(self._minor)
476     self._orig_minor = int(self._orig_minor)
477 agaffney 231 if existing:
478 agaffney 596 parted_part = device._parted_disk.get_partition(self._orig_minor)
479 agaffney 463 label_type = device._parted_disk.type.name
480     if label_type == "loop":
481 agaffney 466 dev_node = device._device
482     else:
483 agaffney 596 dev_node = device._device + str(self._orig_minor)
484 codeman 616 # print "dev_node = " + dev_node
485 agaffney 231 if type == "ntfs":
486 agaffney 463 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 .\+//'"))
487 agaffney 523 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
488 agaffney 529 self._resizeable = True
489 agaffney 231 elif type == "ext2" or type == "ext3":
490 agaffney 530 block_size = int(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")))
491     free_blocks = int(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'")))
492 agaffney 523 free_bytes = int(block_size * free_blocks)
493     # can't hurt to pad (the +50) it a bit since this is really just a guess
494     self._min_mb_for_resize = self._mb - int(free_bytes / MEGABYTE) + 50
495 agaffney 529 self._resizeable = True
496 agaffney 231 else:
497 agaffney 596 parted_part = self._device._parted_disk.get_partition(int(self._orig_minor))
498 agaffney 301 try:
499     parted_fs = parted_part.geom.file_system_open()
500     except:
501     self._resizeable = False
502     return
503 agaffney 231 resize_constraint = parted_fs.get_resize_constraint()
504 agaffney 523 min_bytes = resize_constraint.min_size * self._device._sector_bytes
505     self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
506 agaffney 231 self._resizeable = True
507 agaffney 107
508 agaffney 509 ##
509 agaffney 514 # Returns whether or not the partition is extended
510 agaffney 107 def is_extended(self):
511     if self._type == "extended":
512     return True
513     else:
514     return False
515    
516 agaffney 509 ##
517 agaffney 514 # Returns whether or not the partition is logical
518 agaffney 107 def is_logical(self):
519 agaffney 492 if self._type == "free":
520 agaffney 530 if int(self._minor) + 0.9 == self._minor:
521 agaffney 492 return True
522     else:
523     return False
524 agaffney 497 elif archinfo[self._device._arch]['extended'] and self._minor > 4:
525 agaffney 107 return True
526 agaffney 492 else:
527     return False
528 agaffney 107
529 agaffney 509 ##
530 agaffney 514 # Returns a list of logical partitions if this is an extended partition
531 agaffney 107 def get_logicals(self):
532 agaffney 184 if not self.is_extended():
533     return None
534 agaffney 107 logicals = []
535 agaffney 184 parts = self._device._partitions.keys()
536     parts.sort()
537     for part in parts:
538     if part < 5: continue
539 agaffney 107 logicals.append(part)
540     logicals.sort()
541     return logicals
542    
543 agaffney 509 ##
544 agaffney 514 # Returns the extened parent partition if this is a logical partition (no longer used)
545 agaffney 107 def get_extended_parent(self):
546 agaffney 184 if not self.is_logical():
547     return None
548     else:
549     return self._device.get_partition_at(self._start, ignore_extended=0)
550 agaffney 107
551 agaffney 509 ##
552 agaffney 514 # Sets the start sector for the partition
553     # @param start Start sector
554 agaffney 107 def set_start(self, start):
555     self._start = int(start)
556    
557 agaffney 509 ##
558 agaffney 514 # Returns the start sector for the partition
559 agaffney 107 def get_start(self):
560     return int(self._start)
561    
562 agaffney 509 ##
563 agaffney 514 # Sets the end sector of the partition
564     # @param end End sector
565 agaffney 107 def set_end(self, end):
566     self._end = int(end)
567    
568 agaffney 509 ##
569 agaffney 514 # Returns end sector for the partition
570 agaffney 107 def get_end(self):
571     return int(self._end)
572    
573 agaffney 509 ##
574 agaffney 514 # Returns size of partition in MB
575 agaffney 492 def get_mb(self):
576     return int(self._mb)
577    
578 agaffney 509 ##
579 agaffney 514 # Sets size of partition in MB
580 agaffney 509 # @param mb Parameter description
581 agaffney 494 def set_mb(self, mb):
582     self._mb = int(mb)
583    
584 agaffney 509 ##
585 agaffney 514 # Sets type of partition
586 agaffney 509 # @param type Parameter description
587 agaffney 107 def set_type(self, type):
588     self._type = type
589    
590 agaffney 509 ##
591 agaffney 514 # Returns type of partition
592 agaffney 107 def get_type(self):
593     return self._type
594    
595 agaffney 509 ##
596 agaffney 514 # Returns parent GLIStorageDevice object
597 agaffney 107 def get_device(self):
598     return self._device
599    
600 agaffney 509 ##
601 agaffney 514 # Sets minor of partition
602     # @param minor New minor
603 agaffney 107 def set_minor(self, minor):
604 agaffney 492 self._minor = float(minor)
605 agaffney 107
606 agaffney 509 ##
607 agaffney 514 # Returns minor of partition
608 agaffney 107 def get_minor(self):
609 agaffney 492 return float(self._minor)
610 agaffney 107
611 agaffney 509 ##
612 agaffney 514 # Sets the original minor of the partition
613 agaffney 509 # @param orig_minor Parameter description
614 agaffney 386 def set_orig_minor(self, orig_minor):
615     self._orig_minor = int(orig_minor)
616    
617 agaffney 509 ##
618 agaffney 514 # Returns the original minor of the partition
619 agaffney 386 def get_orig_minor(self):
620     return self._orig_minor
621    
622 agaffney 509 ##
623 agaffney 514 # Sets the mountpoint for the partition
624     # @param mountpoint Mountpoint
625 agaffney 107 def set_mountpoint(self, mountpoint):
626     self._mountpoint = mountpoint
627    
628 agaffney 509 ##
629 agaffney 514 # Returns the mountpoint for the partition
630 agaffney 107 def get_mountpoint(self):
631     return self._mountpoint
632    
633 agaffney 509 ##
634 agaffney 514 # Sets the mount options for the partition
635     # @param mountopts Mount options
636 agaffney 107 def set_mountopts(self, mountopts):
637     self._mountopts = mountopts
638    
639 agaffney 509 ##
640 agaffney 514 # Returns the mount options for the partition
641 agaffney 107 def get_mountopts(self):
642     return self._mountopts
643    
644 agaffney 509 ##
645 agaffney 514 # Set whether to format the partition
646 agaffney 523 # @param format Format this partition (True/False)
647 agaffney 107 def set_format(self, format):
648     self._format = format
649    
650 agaffney 509 ##
651 agaffney 514 # Returns whether to format the partition
652 agaffney 107 def get_format(self):
653     return self._format
654    
655 agaffney 509 ##
656 agaffney 523 # Returns whether the partition is resizeable
657     def is_resizeable(self):
658     return self._resizeable
659    
660     ##
661     # Returns minimum MB for resize
662     def get_min_mb_for_resize(self):
663     # if self.is_extended():
664     # min_size = self._start
665     # for part in self._device._partitions:
666     # if part < 5: continue
667     # if part.get_end > min_size: min_size = part.get_end()
668     # return min_size
669     # else:
670     if self._resizeable:
671     return self._min_mb_for_resize
672 agaffney 107 else:
673 agaffney 523 return -1
674 agaffney 107
675 agaffney 509 ##
676 agaffney 523 # Returns maximum MB for resize
677     def get_max_mb_for_resize(self):
678 agaffney 544 if self._resizeable:
679     free_minor = 0
680     if self.is_logical():
681     free_minor = self._minor + 0.9
682     else:
683     free_minor = self._minor + 0.1
684     if free_minor in self._device._partitions:
685     return self._mb + self._device._partitions[free_minor]._mb
686     else:
687     return self._mb
688 agaffney 523 else:
689 agaffney 544 return -1
690 agaffney 107
691 agaffney 509 ##
692 agaffney 544 # Resizes the partition
693     # @param mb New size in MB
694     def resize(self, mb):
695     free_minor = self._minor
696 agaffney 107 if self.is_logical():
697 agaffney 544 free_minor += 0.9
698     else:
699     free_minor += 0.1
700     if mb < self._mb:
701     # Shrinking
702     if not free_minor in self._device._partitions:
703     self._device._partitions[free_minor] = Partition(self._device, free_minor, 0, 0, 0, "free", format=False, existing=False)
704     self._device._partitions[free_minor]._mb += self._mb - mb
705     self._mb = mb
706     elif mb == self._mb + self._device._partitions[free_minor]._mb:
707     # Using all available unallocated space
708     del self._device._partitions[free_minor]
709     self._mb = mb
710     elif mb > self._mb:
711     # Growing
712     self._device._partitions[free_minor]._mb = mb - self._mb
713     self._mb = mb
714 agaffney 107
715 agaffney 514 ##
716     # Returns a list of detected partitionable devices
717 agaffney 107 def detect_devices():
718     devices = []
719    
720     # Make sure sysfs exists
721     if not os.path.exists("/sys/bus"):
722 agaffney 556 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "no sysfs found (you MUST use a kernel >2.6)")
723 agaffney 107 # Make sure /proc/partitions exists
724     if not os.path.exists("/proc/partitions"):
725 agaffney 556 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "/proc/partitions does not exist! Please make sure procfs is in your kernel and mounted!")
726 agaffney 107
727     # Load /proc/partitions into the variable 'partitions'
728     partitions = []
729     for line in open("/proc/partitions"):
730 agaffney 556 if len(line.split()) < 4 or not line.split()[0].isdigit() or not line.split()[1].isdigit():
731 agaffney 107 continue
732    
733     # Get the major, minor and device name
734     major = line.split()[0]
735     minor = line.split()[1]
736     device = "/dev/" + line.split()[3]
737    
738     if not major.isdigit() or not minor.isdigit():
739     continue
740    
741     major = int(major)
742     minor = int(minor)
743    
744     # If there is no /dev/'device_name', then scan
745     # all the devices in /dev to try and find a
746     # devices with the same major and minor
747     if not os.path.exists(device):
748     device = None
749     for path, dirs, files in os.walk("/dev"):
750 agaffney 535 for d_file in files:
751     full_file = os.path.join(path, d_file)
752 agaffney 107 if not os.path.exists(full_file):
753     continue
754     statres = os.stat(full_file)
755     fmaj = os.major(statres.st_rdev)
756     fmin = os.minor(statres.st_rdev)
757     if fmaj == major and fmin == minor:
758     device = full_file
759     break
760     if not device:
761     continue
762    
763     partitions.append(( major, minor, device ))
764    
765     # Scan sysfs for the devices of type 'x'
766     # 'x' being a member of the list below:
767     for dev_type in [ "ide", "scsi" ]: # Other device types? usb? fw?
768     if os.path.exists("/sys/bus/" + dev_type):
769     sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices")
770    
771     # For each device in the devices on that bus
772     for sysfs_device in sysfs_devices:
773 agaffney 556 dev_file = "/sys/bus/" + dev_type + "/devices/" + sysfs_device + "/block/dev"
774 agaffney 107
775     # If the file is not a block device, loop
776     if not os.path.exists(dev_file):
777     continue
778    
779     # Get the major and minor info
780     try:
781     major, minor = open(dev_file).read().split(":")
782     major = int(major)
783     minor = int(minor)
784     except:
785 agaffney 556 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "invalid major minor in " + dev_file)
786 agaffney 107
787     # Find a device listed in /proc/partitions
788     # that has the same minor and major as our
789     # current block device.
790     for record in partitions:
791     if major == record[0] and minor == record[1]:
792     devices.append(record[2])
793 agaffney 595
794     # For testing the partitioning code
795     if GLIUtility.is_file("/tmp/disk.img"):
796     devices.append("/tmp/disk.img")
797    
798 agaffney 107 # We have assembled the list of devices, so return it
799     return devices

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