/[gli]/trunk/src/GLIStorageDevice.py
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1import commands, string, re, os, parted 1import commands, string, os, parted
2from decimal import Decimal 2from GLIException import *
3import GLIUtility
3 4
4MEGABYTE = 1024 * 1024 5MEGABYTE = 1024 * 1024
5 6
6archinfo = { 'sparc': { 'fixedparts': [ { 'minor': 3, 'type': "wholedisk" } ], 'disklabel': 'sun', 'extended': False }, 7archinfo = { 'sparc': { 'fixedparts': [ { 'minor': 3, 'type': "wholedisk" } ], 'disklabel': 'sun', 'extended': False },
7 'hppa': { 'fixedparts': [ { 'minor': 1, 'type': "boot" } ], 'disklabel': 'msdos', 'extended': False }, 8 'hppa': { 'fixedparts': [ { 'minor': 1, 'type': "boot" } ], 'disklabel': 'msdos', 'extended': False },
8 'x86': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True }, 9 'x86': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
10 'amd64': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
9 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False } 11 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False }
10 } 12 }
11 13
12## 14##
13# This class provides a partitioning abstraction for the frontends 15# This class provides a partitioning abstraction for the frontends
24 _parted_dev = None 26 _parted_dev = None
25 _parted_disk = None 27 _parted_disk = None
26 _sector_bytes = 0 28 _sector_bytes = 0
27 _total_mb = 0 29 _total_mb = 0
28 _arch = None 30 _arch = None
31 _disklabel = None
29 32
30 ## 33 ##
31 # Initialization function for GLIStorageDevice class 34 # Initialization function for GLIStorageDevice class
32 # @param self Parameter description
33 # @param device Device node (e.g. /dev/hda) of device being represented 35 # @param device Device node (e.g. /dev/hda) of device being represented
34 # @param arch="x86" Architecture that we're partition for (defaults to 'x86' for now) 36 # @param arch="x86" Architecture that we're partition for (defaults to 'x86' for now)
35 def __init__(self, device, arch="x86"): 37 def __init__(self, device, arch="x86", set_geometry=True):
36 self._device = device 38 self._device = device
37 self._partitions = {} 39 self._partitions = {}
38 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512} 40 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512}
39 self._total_bytes = 0 41 self._total_bytes = 0
40 self._cylinder_bytes = 0 42 self._cylinder_bytes = 0
41 self._arch = arch 43 self._arch = arch
42 self._parted_dev = parted.PedDevice.get(self._device) 44 self._parted_dev = parted.PedDevice.get(self._device)
45 try:
43 self._parted_disk = parted.PedDisk.new(self._parted_dev) 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 if set_geometry:
44 self.set_disk_geometry_from_disk() 51 self.set_disk_geometry_from_disk()
45 52
46 ## 53 ##
47 # Sets disk geometry info from disk. This function is used internally by __init__() 54 # Sets disk geometry info from disk. This function is used internally by __init__()
48 # @param self Parameter description
49 def set_disk_geometry_from_disk(self): 55 def set_disk_geometry_from_disk(self):
50 self._total_bytes = self._parted_dev.length * self._parted_dev.sector_size 56 self._total_bytes = self._parted_dev.length * self._parted_dev.sector_size
51 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders 57 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders
52 self._sector_bytes = self._parted_dev.sector_size 58 self._sector_bytes = self._parted_dev.sector_size
53 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes 59 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes
55 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors'] 61 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors']
56 self._total_mb = int(self._total_bytes / MEGABYTE) 62 self._total_mb = int(self._total_bytes / MEGABYTE)
57 63
58 ## 64 ##
59 # Sets partition info from disk. 65 # Sets partition info from disk.
60 # @param self Parameter description
61 def set_partitions_from_disk(self): 66 def set_partitions_from_disk(self):
62 last_part = 0 67 last_part = 0
63 last_log_part = 4 68 last_log_part = 4
64 parted_part = self._parted_disk.next_partition() 69 parted_part = self._parted_disk.next_partition()
65 while parted_part: 70 while parted_part:
74 last_part = parted_part.num 79 last_part = parted_part.num
75 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) 80 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)
76 elif parted_part.type_name == "free": 81 elif parted_part.type_name == "free":
77 parent_part = self.get_partition_at(parted_part.geom.start, ignore_extended=0) 82 parent_part = self.get_partition_at(parted_part.geom.start, ignore_extended=0)
78 if parent_part: 83 if parent_part:
79 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) 84 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)
80 last_log_part += 1 85 last_log_part += 1
81 else: 86 else:
82 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) 87 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)
83 last_part += 1 88 last_part += 1
84 parted_part = self._parted_disk.next_partition(parted_part) 89 parted_part = self._parted_disk.next_partition(parted_part)
85 90
86 ## 91 ##
87 # Imports partition info from the install profile partition structure (currently does nothing) 92 # Imports partition info from the install profile partition structure (currently does nothing)
88 # @param self Parameter description
89 # @param ips Parameter structure returned from install_profile.get_partition_tables() 93 # @param ips Parameter structure returned from install_profile.get_partition_tables()
90 def set_partitions_from_install_profile_structure(self, ips): 94 def set_partitions_from_install_profile_structure(self, ips):
91 pass
92# for part in ips: 95 for part in ips:
93# tmppart = ips[part] 96 tmppart = ips[part]
94# existing = False 97 existing = False
95# parted_part = self._parted_disk.get_partition(part) 98 if tmppart['origminor'] and not tmppart['format']:
96# if parted_part != None:
97# start = parted_part.geom.start / self._sectors_in_cylinder
98# end = parted_part.geom.end / self._sectors_in_cylinder
99# fs_type = ""
100# if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
101# if parted_part.type == 2: fs_type = "extended"
102# if int(tmppart['start']) == int(start) and int(tmppart['end']) == int(end) and tmppart['type'] == fs_type and tmppart['format'] == False:
103# existing = True 99 existing = True
104# 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[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=['mountopts'])
105 101
106 ## 102 ##
107 # Returns name of device (e.g. /dev/hda) being represented 103 # Returns name of device (e.g. /dev/hda) being represented
108 # @param self Parameter description
109 def get_device(self): 104 def get_device(self):
110 return self._device 105 return self._device
111 106
112 ## 107 ##
113 # Combines free space and closes gaps in minor numbers. This is used internally 108 # Combines free space and closes gaps in minor numbers. This is used internally
114 # @param self Parameter description
115 def tidy_partitions(self): 109 def tidy_partitions(self):
116 last_minor = 0 110 last_minor = 0
117 last_log_minor = 4 111 last_log_minor = 4
118 last_free = 0 112 last_free = 0
119 last_log_free = 0 113 last_log_free = 0
122 for part in parts: 116 for part in parts:
123 if archinfo[self._arch]['extended'] and part > 4: break 117 if archinfo[self._arch]['extended'] and part > 4: break
124 tmppart = self._partitions[part] 118 tmppart = self._partitions[part]
125 if tmppart.get_type() == "extended": 119 if tmppart.get_type() == "extended":
126 for part_log in parts: 120 for part_log in parts:
127 if part_log < Decimal("4.9"): continue 121 if part_log < 4.9: continue
128 tmppart_log = self._partitions[part_log] 122 tmppart_log = self._partitions[part_log]
129 if tmppart_log.get_type() == "free": 123 if tmppart_log.get_type() == "free":
130 if last_log_minor < last_log_free: 124 if last_log_minor < last_log_free:
131 self._partitions[last_log_free].set_mb(self._partitions[last_log_free].get_mb()+tmppart_log.get_mb()) 125 self._partitions[last_log_free].set_mb(self._partitions[last_log_free].get_mb()+tmppart_log.get_mb())
132 del self._partitions[part_log] 126 del self._partitions[part_log]
133 else: 127 else:
134 if not last_log_free: 128 if not last_log_free:
135 last_log_free = Decimal(str(last_log_minor + 0.9)) 129 last_log_free = last_log_minor + 0.9
130 else:
131 lost_log_free = part_log
136 tmppart_log.set_minor(last_log_free) 132 tmppart_log.set_minor(last_log_free)
137 self._partitions[last_log_free] = tmppart_log 133 self._partitions[last_log_free] = tmppart_log
138 if part_log != last_log_free: del self._partitions[part_log] 134 if part_log != last_log_free: del self._partitions[part_log]
139 continue 135 continue
140 last_log_free = part_log
141 else: 136 else:
142 if part_log > (last_log_minor + 1): 137 if part_log > (last_log_minor + 1):
143 tmppart_log.set_minor(last_log_minor + 1) 138 tmppart_log.set_minor(last_log_minor + 1)
144 last_log_minor = last_log_minor + 1 139 last_log_minor = last_log_minor + 1
145 self._partitions[last_log_minor] = tmppart_log 140 self._partitions[last_log_minor] = tmppart_log
146 del self._partitions[part_log] 141 del self._partitions[part_log]
147 continue 142 continue
143 else:
148 last_log_minor = part_log 144 last_log_minor = part_log
149 if tmppart.get_type() == "free": 145 if tmppart.get_type() == "free":
150 if last_minor < last_free: 146 if last_minor < last_free:
151 self._partitions[last_free].set_mb(self._partitions[last_free].get_mb()+tmppart.get_mb()) 147 self._partitions[last_free].set_mb(self._partitions[last_free].get_mb()+tmppart.get_mb())
152 del self._partitions[part] 148 del self._partitions[part]
153 else: 149 else:
154 if not last_free: 150 if not last_free:
155 last_free = Decimal(str(last_minor + 0.1)) 151 last_free = last_minor + 0.1
152 else:
153 last_free = part
156 tmppart.set_minor(last_free) 154 tmppart.set_minor(last_free)
157 self._partitions[last_free] = tmppart 155 self._partitions[last_free] = tmppart
158 if part != last_free: del self._partitions[part] 156 if part != last_free: del self._partitions[part]
159 continue 157 continue
160 last_free = part
161 else: 158 else:
162 if part > (last_minor + 1): 159 if part > (last_minor + 1):
163 tmppart.set_minor(last_minor + 1) 160 tmppart.set_minor(last_minor + 1)
164 last_minor = last_minor + 1 161 last_minor = last_minor + 1
165 self._partitions[last_minor] = tmppart 162 self._partitions[last_minor] = tmppart
166 del self._partitions[part] 163 del self._partitions[part]
167 continue 164 continue
165 else:
168 last_minor = part 166 last_minor = part
169 167
170 ## 168 ##
171 # Adds a new partition to the partition info 169 # Adds a new partition to the partition info
172 # @param self Parameter description
173 # @param free_minor minor of unallocated space partition is being created in 170 # @param free_minor minor of unallocated space partition is being created in
174 # @param mb size of partition in MB 171 # @param mb size of partition in MB
175 # @param start Start sector (only used for existing partitions) 172 # @param start Start sector (only used for existing partitions)
176 # @param end End sector (only used for existing partitions) 173 # @param end End sector (only used for existing partitions)
177 # @param type Partition type (ext2, ext3, fat32, linux-swap, free, extended, etc.) 174 # @param type Partition type (ext2, ext3, fat32, linux-swap, free, extended, etc.)
178 # @param mountpoint='' Partition mountpoint 175 # @param mountpoint='' Partition mountpoint
179 # @param mountopts='' Partition mount options 176 # @param mountopts='' Partition mount options
180 def add_partition(self, free_minor, mb, start, end, type, mountpoint='', mountopts=''): 177 def add_partition(self, free_minor, mb, start, end, type, mountpoint='', mountopts=''):
181 free_minor = Decimal(str(free_minor)) 178 free_minor = free_minor
182 new_minor = int(free_minor) + 1 179 new_minor = int(free_minor) + 1
183# print "add_partition(): free_minor=" + str(free_minor) + ", new_minor=" + str(new_minor) 180# print "add_partition(): free_minor=" + str(free_minor) + ", new_minor=" + str(new_minor)
184 if self._partitions.has_key(new_minor): 181 if self._partitions.has_key(new_minor):
185 parts = self._partitions.keys() 182 parts = self._partitions.keys()
186 parts.sort() 183 parts.sort()
201 if i == new_minor: stopscooting = 1 198 if i == new_minor: stopscooting = 1
202 if mb != self._partitions[free_minor].get_mb(): 199 if mb != self._partitions[free_minor].get_mb():
203 old_free_mb = self._partitions[free_minor].get_mb() 200 old_free_mb = self._partitions[free_minor].get_mb()
204 del self._partitions[free_minor] 201 del self._partitions[free_minor]
205 if archinfo[self._arch]['extended'] and new_minor >= 5: 202 if archinfo[self._arch]['extended'] and new_minor >= 5:
206 free_minor = Decimal(str(new_minor + 0.9)) 203 free_minor = new_minor + 0.9
207 else: 204 else:
208 free_minor = Decimal(str(new_minor + 0.1)) 205 free_minor = new_minor + 0.1
209 self._partitions[free_minor] = Partition(self, free_minor, old_free_mb-mb, 0, 0, "free") 206 self._partitions[free_minor] = Partition(self, free_minor, old_free_mb-mb, 0, 0, "free")
210# print "add_partition(): new part doesn't use all freespace. new free part is: minor=" + str(free_minor) 207# print "add_partition(): new part doesn't use all freespace. new free part is: minor=" + str(free_minor)
211 else: 208 else:
212 del self._partitions[free_minor] 209 del self._partitions[free_minor]
213 self._partitions[new_minor] = Partition(self, new_minor, mb, start, end, type, mountpoint=mountpoint, mountopts=mountopts) 210 self._partitions[new_minor] = Partition(self, new_minor, mb, start, end, type, mountpoint=mountpoint, mountopts=mountopts)
214 if type == "extended": 211 if type == "extended":
215 self._partitions[Decimal("4.9")] = Partition(self, Decimal("4.9"), mb, 0, 0, "free") 212 self._partitions[4.9] = Partition(self, 4.9, mb, 0, 0, "free")
216 self.tidy_partitions() 213 self.tidy_partitions()
217 214
218 ## 215 ##
219 # Removes partition from partition info 216 # Removes partition from partition info
220 # @param self Parameter description
221 # @param minor Minor of partition to remove 217 # @param minor Minor of partition to remove
222 def remove_partition(self, minor): 218 def remove_partition(self, minor):
223 tmppart = self._partitions[int(minor)] 219 tmppart = self._partitions[int(minor)]
224 free_minor = 0 220 free_minor = 0
225 if tmppart.is_logical(): 221 if tmppart.is_logical():
226 free_minor = Decimal(str(float(minor)-0.1)) 222 free_minor = minor-0.1
227 else: 223 else:
228 free_minor = Decimal(str(float(minor)-0.9)) 224 free_minor = minor-0.9
229 self._partitions[free_minor] = Partition(self, free_minor, tmppart.get_mb(), 0, 0, "free", format=False, existing=False) 225 self._partitions[free_minor] = Partition(self, free_minor, tmppart.get_mb(), 0, 0, "free", format=False, existing=False)
230 del self._partitions[int(minor)] 226 del self._partitions[int(minor)]
231 self.tidy_partitions() 227 self.tidy_partitions()
232 228
233 ## 229 ##
234 # Returns free space (no longer used) 230 # Returns free space (no longer used)
235 # @param self Parameter description
236 # @param start Start sector for search 231 # @param start Start sector for search
237 def get_free_space(self, start): 232 def get_free_space(self, start):
238 GAP_SIZE = 100 233 GAP_SIZE = 100
239 parts = self._partitions.keys() 234 parts = self._partitions.keys()
240 parts.sort() 235 parts.sort()
270 free_end = self._total_sectors 265 free_end = self._total_sectors
271 return (free_start, free_end) 266 return (free_start, free_end)
272 267
273 ## 268 ##
274 # Gets partition containing a certain sector (no longer used) 269 # Gets partition containing a certain sector (no longer used)
275 # @param self Parameter description
276 # @param sector Sector to look at 270 # @param sector Sector to look at
277 # @param ignore_extended=1 Ignore extended partitions 271 # @param ignore_extended=1 Ignore extended partitions
278 def get_partition_at(self, sector, ignore_extended=1): 272 def get_partition_at(self, sector, ignore_extended=1):
279 parts = self._partitions.keys() 273 parts = self._partitions.keys()
280 parts.sort() 274 parts.sort()
285 return part 279 return part
286 return 0 280 return 0
287 281
288 ## 282 ##
289 # Returns free minor (no longer used) 283 # Returns free minor (no longer used)
290 # @param self Parameter description
291 # @param start Parameter description 284 # @param start Parameter description
292 # @param end Parameter description 285 # @param end Parameter description
293 def get_free_minor_at(self, start, end): 286 def get_free_minor_at(self, start, end):
294 parts = self._partitions.keys() 287 parts = self._partitions.keys()
295 parts.sort() 288 parts.sort()
319 lastpart = part 312 lastpart = part
320 return minor 313 return minor
321 314
322 ## 315 ##
323 # Returns an ordered list (disk order) of partition minors 316 # Returns an ordered list (disk order) of partition minors
324 # @param self Parameter description
325 def get_ordered_partition_list(self): 317 def get_ordered_partition_list(self):
326 parts = self._partitions.keys() 318 parts = self._partitions.keys()
327 parts.sort() 319 parts.sort()
328 partlist = [] 320 partlist = []
329 tmppart = None 321 tmppart = None
330 tmppart_log = None
331 for part in parts: 322 for part in parts:
332 if archinfo[self._arch]['extended'] and part > Decimal("4.1"): break 323 if archinfo[self._arch]['extended'] and part > 4.1: break
333 tmppart = self._partitions[part] 324 tmppart = self._partitions[part]
334 partlist.append(part) 325 partlist.append(part)
335 if tmppart.is_extended(): 326 if tmppart.is_extended():
336 for part_log in parts: 327 for part_log in parts:
337 if part_log < Decimal("4.9"): continue 328 if part_log < 4.9: continue
338 tmppart_log = self._partitions[part_log]
339 partlist.append(part_log) 329 partlist.append(part_log)
340 return partlist 330 return partlist
341 331
342 ## 332 ##
343 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables() 333 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables()
344 # @param self Parameter description
345 def get_install_profile_structure(self): 334 def get_install_profile_structure(self):
346 devdic = {} 335 devdic = {}
347 for part in self._partitions: 336 for part in self._partitions:
348 tmppart = self._partitions[part] 337 tmppart = self._partitions[part]
349 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() } 338 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() }
350 return devdic 339 return devdic
351 340
352 ## 341 ##
353 # Returns the minor of the extended partition, if any 342 # Returns the minor of the extended partition, if any
354 # @param self Parameter description
355 def get_extended_partition(self): 343 def get_extended_partition(self):
356 for part in self._partitions: 344 for part in self._partitions:
357 tmppart = self._partitions[part] 345 tmppart = self._partitions[part]
358 if tmppart.is_extended(): 346 if tmppart.is_extended():
359 return part 347 return part
360 return 0 348 return 0
361 349
362 ## 350 ##
351 # Sets the disklabel type
352 def set_disklabel(self, disklabel):
353 self._disklabel = disklabel
354
355 ##
356 # Returns the disklabel type
357 def get_disklabel(self):
358 return self._disklabel
359
360 ##
363 # Returns the number of sectors on the device 361 # Returns the number of sectors on the device
364 # @param self Parameter description
365 def get_num_sectors(self): 362 def get_num_sectors(self):
366 return int(self._total_sectors) 363 return int(self._total_sectors)
367 364
368 ## 365 ##
369 # Returns the size of a cylinder in bytes 366 # Returns the size of a cylinder in bytes
370 # @param self Parameter description
371 def get_cylinder_size(self): 367 def get_cylinder_size(self):
372 return int(self._cylinder_bytes) 368 return int(self._cylinder_bytes)
373 369
374 ## 370 ##
375 # Returns the size of a sector in bytes 371 # Returns the size of a sector in bytes
376 # @param self Parameter description
377 def get_sector_size(self): 372 def get_sector_size(self):
378 return int(self._sector_bytes) 373 return int(self._sector_bytes)
379 374
380 ## 375 ##
381 # Returns the number of cylinders 376 # Returns the number of cylinders
382 # @param self Parameter description
383 def get_num_cylinders(self): 377 def get_num_cylinders(self):
384 return int(self._geometry['cylinders']) 378 return int(self._geometry['cylinders'])
385 379
386 ## 380 ##
387 # Returns the total number of bytes on the device 381 # Returns the total number of bytes on the device
388 # @param self Parameter description
389 def get_drive_bytes(self): 382 def get_drive_bytes(self):
390 return int(self._total_bytes) 383 return int(self._total_bytes)
391 384
392 ## 385 ##
393 # Returns the total number of MB on the device 386 # Returns the total number of MB on the device
394 # @param self Parameter description
395 def get_total_mb(self): 387 def get_total_mb(self):
396 return self._total_mb 388 return self._total_mb
397 389
398 ## 390 ##
399 # Returns partition info dictionary 391 # Returns partition info dictionary
400 # @param self Parameter description
401 def get_partitions(self): 392 def get_partitions(self):
402 return self._partitions 393 return self._partitions
403 394
404 ## 395 ##
405 # Prints disk geometry to STDOUT (no longer used) 396 # Prints disk geometry to STDOUT (no longer used)
406 # @param self Parameter description
407 def print_geometry(self): 397 def print_geometry(self):
408 print self._total_bytes, self._geometry 398 print self._total_bytes, self._geometry
409 399
410 ## 400 ##
411 # Utility function for raising an exception
412 # @param self Parameter description
413 # @param message Error message
414 def _error(self, message):
415 "Raises an exception"
416 raise "DeviceObjectError", message
417
418 ##
419 # Utility function for running a command and returning it's output as a list 401 # Utility function for running a command and returning it's output as a list
420 # @param self Parameter description
421 # @param cmd Command to run 402 # @param cmd Command to run
422 def _run(self, cmd): 403 def _run(self, cmd):
423 "Runs a command and returns the output" 404 "Runs a command and returns the output"
424 405
425 # Run command 406 # Run command
455 _type = None 436 _type = None
456 _mountpoint = None 437 _mountpoint = None
457 _mountopts = None 438 _mountopts = None
458 _format = None 439 _format = None
459 _resizeable = None 440 _resizeable = None
460 _min_sectors_for_resize = 0 441 _min_mb_for_resize = 0
461 _mb = 0 442 _mb = 0
462 443
463 ## 444 ##
464 # Brief description of function 445 # Initialization function for the Partition class
465 # @param self Parameter description 446 # @param device Parent GLIStorageDevice object
466 # @param device Parameter description 447 # @param minor Minor of partition
467 # @param minor Parameter description
468 # @param mb Parameter description 448 # @param mb Parameter Size of partition in MB
469 # @param start Parameter description 449 # @param start Parameter Start sector of partition
470 # @param end Parameter description 450 # @param end Parameter Start sector of partition
471 # @param type Parameter description 451 # @param type Parameter Type of partition (ext2, ext3, fat32, linux-swap, free, extended, etc.)
472 # @param mountpoint='' Parameter description 452 # @param mountpoint='' Mountpoint of partition
473 # @param mountopts='' Parameter description 453 # @param mountopts='' Mount options of partition
474 # @param format=True Parameter description 454 # @param format=True Format partition
475 # @param existing=False Parameter description 455 # @param existing=False This partition exists on disk
476 def __init__(self, device, minor, mb, start, end, type, mountpoint='', mountopts='', format=True, existing=False): 456 def __init__(self, device, minor, mb, start, end, type, mountpoint='', mountopts='', format=True, existing=False, origminor=0):
477 self._device = device 457 self._device = device
478 self._minor = float(minor) 458 self._minor = float(minor)
479 if existing: self._orig_minor = int(minor)
480 self._start = int(start) 459 self._start = int(start)
481 self._end = int(end) 460 self._end = int(end)
482 self._type = type or "unknown" 461 self._type = type or "unknown"
483 self._mountpoint = mountpoint 462 self._mountpoint = mountpoint
484 self._mountopts = mountopts 463 self._mountopts = mountopts
485 self._format = format 464 self._format = format
486 self._mb = mb 465 self._mb = mb
466 self._orig_minor = origminor
467 if type != "free":
468 if existing and not origminor:
469 self._orig_minor = self._minor
470 self._minor = int(self._minor)
471 self._orig_minor = int(self._orig_minor)
487 if existing: 472 if existing:
488 self._orig_minor = self._minor
489 parted_part = device._parted_disk.get_partition(minor) 473 parted_part = device._parted_disk.get_partition(self._orig_minor)
490 label_type = device._parted_disk.type.name 474 label_type = device._parted_disk.type.name
491 if label_type == "loop": 475 if label_type == "loop":
492 dev_node = device._device 476 dev_node = device._device
493 else: 477 else:
494 dev_node = device._device + str(minor) 478 dev_node = device._device + str(self._orig_minor)
479 print "dev_node = " + dev_node
495 if type == "ntfs": 480 if type == "ntfs":
496 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 .\+//'")) 481 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 .\+//'"))
497 self._min_cylinders_for_resize = int(min_bytes / self._device._cylinder_bytes) + 1 482 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
498 self._resizeable == True 483 self._resizeable = True
499 elif type == "ext2" or type == "ext3": 484 elif type == "ext2" or type == "ext3":
500 block_size = string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")) 485 block_size = int(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")))
501 free_blocks = string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'")) 486 free_blocks = int(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'")))
502 free_sec = int(int(block_size) * int(free_blocks) / self._device._sector_bytes) 487 free_bytes = int(block_size * free_blocks)
503 free_sec = free_sec - 2000 # just to be safe 488 # can't hurt to pad (the +50) it a bit since this is really just a guess
504 self._min_sectors_for_resize = (self._end - self._start + 1) - free_sec 489 self._min_mb_for_resize = self._mb - int(free_bytes / MEGABYTE) + 50
505 self._resizeable == True 490 self._resizeable = True
506 else: 491 else:
507 parted_part = self._device._parted_disk.get_partition(int(self._minor)) 492 parted_part = self._device._parted_disk.get_partition(int(self._orig_minor))
508 try: 493 try:
509 parted_fs = parted_part.geom.file_system_open() 494 parted_fs = parted_part.geom.file_system_open()
510 except: 495 except:
511 self._resizeable = False 496 self._resizeable = False
512 return 497 return
513 resize_constraint = parted_fs.get_resize_constraint() 498 resize_constraint = parted_fs.get_resize_constraint()
514 min_size = resize_constraint.min_size 499 min_bytes = resize_constraint.min_size * self._device._sector_bytes
515 if int(min_size) != min_size: min_size = int(min_size) + 1 500 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
516 self._min_sectors_for_resize = min_size
517 self._resizeable = True 501 self._resizeable = True
518 502
519 ## 503 ##
520 # Brief description of function 504 # Returns whether or not the partition is extended
521 # @param self Parameter description
522 def is_extended(self): 505 def is_extended(self):
523 if self._type == "extended": 506 if self._type == "extended":
524 return True 507 return True
525 else: 508 else:
526 return False 509 return False
527 510
528 ## 511 ##
529 # Brief description of function 512 # Returns whether or not the partition is logical
530 # @param self Parameter description
531 def is_logical(self): 513 def is_logical(self):
532 if self._type == "free": 514 if self._type == "free":
533 if int(self._minor) + Decimal("0.9") == Decimal(str(self._minor)): 515 if int(self._minor) + 0.9 == self._minor:
534 return True 516 return True
535 else: 517 else:
536 return False 518 return False
537 elif archinfo[self._device._arch]['extended'] and self._minor > 4: 519 elif archinfo[self._device._arch]['extended'] and self._minor > 4:
538 return True 520 return True
539 else: 521 else:
540 return False 522 return False
541 523
542 ## 524 ##
543 # Brief description of function 525 # Returns a list of logical partitions if this is an extended partition
544 # @param self Parameter description
545 def get_logicals(self): 526 def get_logicals(self):
546 if not self.is_extended(): 527 if not self.is_extended():
547 return None 528 return None
548 logicals = [] 529 logicals = []
549 start = self._start
550 parts = self._device._partitions.keys() 530 parts = self._device._partitions.keys()
551 parts.sort() 531 parts.sort()
552 for part in parts: 532 for part in parts:
553 if part < 5: continue 533 if part < 5: continue
554 logicals.append(part) 534 logicals.append(part)
555 logicals.sort() 535 logicals.sort()
556 return logicals 536 return logicals
557 537
558 ## 538 ##
559 # Brief description of function 539 # Returns the extened parent partition if this is a logical partition (no longer used)
560 # @param self Parameter description
561 def get_extended_parent(self): 540 def get_extended_parent(self):
562 if not self.is_logical(): 541 if not self.is_logical():
563 return None 542 return None
564 else: 543 else:
565 return self._device.get_partition_at(self._start, ignore_extended=0) 544 return self._device.get_partition_at(self._start, ignore_extended=0)
566 545
567 ## 546 ##
568 # Brief description of function 547 # Sets the start sector for the partition
569 # @param self Parameter description 548 # @param start Start sector
570 # @param start Parameter description
571 def set_start(self, start): 549 def set_start(self, start):
572 self._start = int(start) 550 self._start = int(start)
573 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
574 551
575 ## 552 ##
576 # Brief description of function 553 # Returns the start sector for the partition
577 # @param self Parameter description
578 def get_start(self): 554 def get_start(self):
579 return int(self._start) 555 return int(self._start)
580 556
581 ## 557 ##
582 # Brief description of function 558 # Sets the end sector of the partition
583 # @param self Parameter description 559 # @param end End sector
584 # @param end Parameter description
585 def set_end(self, end): 560 def set_end(self, end):
586 self._end = int(end) 561 self._end = int(end)
587 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
588 562
589 ## 563 ##
590 # Brief description of function 564 # Returns end sector for the partition
591 # @param self Parameter description
592 def get_end(self): 565 def get_end(self):
593 return int(self._end) 566 return int(self._end)
594 567
595 ## 568 ##
596 # Brief description of function 569 # Returns size of partition in MB
597 # @param self Parameter description
598 def get_mb(self): 570 def get_mb(self):
599 return int(self._mb) 571 return int(self._mb)
600 572
601 ## 573 ##
602 # Brief description of function 574 # Sets size of partition in MB
603 # @param self Parameter description
604 # @param mb Parameter description 575 # @param mb Parameter description
605 def set_mb(self, mb): 576 def set_mb(self, mb):
606 self._mb = int(mb) 577 self._mb = int(mb)
607 578
608 ## 579 ##
609 # Brief description of function 580 # Sets type of partition
610 # @param self Parameter description
611 # @param type Parameter description 581 # @param type Parameter description
612 def set_type(self, type): 582 def set_type(self, type):
613 self._type = type 583 self._type = type
614 584
615 ## 585 ##
616 # Brief description of function 586 # Returns type of partition
617 # @param self Parameter description
618 def get_type(self): 587 def get_type(self):
619 return self._type 588 return self._type
620 589
621 ## 590 ##
622 # Brief description of function 591 # Returns parent GLIStorageDevice object
623 # @param self Parameter description
624 def get_device(self): 592 def get_device(self):
625 return self._device 593 return self._device
626 594
627 ## 595 ##
628 # Brief description of function 596 # Sets minor of partition
629 # @param self Parameter description 597 # @param minor New minor
630 # @param minor Parameter description
631 def set_minor(self, minor): 598 def set_minor(self, minor):
632 self._minor = float(minor) 599 self._minor = float(minor)
633 600
634 ## 601 ##
635 # Brief description of function 602 # Returns minor of partition
636 # @param self Parameter description
637 def get_minor(self): 603 def get_minor(self):
638 return float(self._minor) 604 return float(self._minor)
639 605
640 ## 606 ##
641 # Brief description of function 607 # Sets the original minor of the partition
642 # @param self Parameter description
643 # @param orig_minor Parameter description 608 # @param orig_minor Parameter description
644 def set_orig_minor(self, orig_minor): 609 def set_orig_minor(self, orig_minor):
645 self._orig_minor = int(orig_minor) 610 self._orig_minor = int(orig_minor)
646 611
647 ## 612 ##
648 # Brief description of function 613 # Returns the original minor of the partition
649 # @param self Parameter description
650 def get_orig_minor(self): 614 def get_orig_minor(self):
651 return self._orig_minor 615 return self._orig_minor
652 616
653 ## 617 ##
654 # Brief description of function 618 # Sets the mountpoint for the partition
655 # @param self Parameter description 619 # @param mountpoint Mountpoint
656 # @param mountpoint Parameter description
657 def set_mountpoint(self, mountpoint): 620 def set_mountpoint(self, mountpoint):
658 self._mountpoint = mountpoint 621 self._mountpoint = mountpoint
659 622
660 ## 623 ##
661 # Brief description of function 624 # Returns the mountpoint for the partition
662 # @param self Parameter description
663 def get_mountpoint(self): 625 def get_mountpoint(self):
664 return self._mountpoint 626 return self._mountpoint
665 627
666 ## 628 ##
667 # Brief description of function 629 # Sets the mount options for the partition
668 # @param self Parameter description 630 # @param mountopts Mount options
669 # @param mountopts Parameter description
670 def set_mountopts(self, mountopts): 631 def set_mountopts(self, mountopts):
671 self._mountopts = mountopts 632 self._mountopts = mountopts
672 633
673 ## 634 ##
674 # Brief description of function 635 # Returns the mount options for the partition
675 # @param self Parameter description
676 def get_mountopts(self): 636 def get_mountopts(self):
677 return self._mountopts 637 return self._mountopts
678 638
679 ## 639 ##
680 # Brief description of function 640 # Set whether to format the partition
681 # @param self Parameter description 641 # @param format Format this partition (True/False)
682 # @param format Parameter description
683 def set_format(self, format): 642 def set_format(self, format):
684 self._format = format 643 self._format = format
685 644
686 ## 645 ##
687 # Brief description of function 646 # Returns whether to format the partition
688 # @param self Parameter description
689 def get_format(self): 647 def get_format(self):
690 return self._format 648 return self._format
691 649
692 ## 650 ##
693 # Brief description of function 651 # Returns whether the partition is resizeable
694 # @param self Parameter description 652 def is_resizeable(self):
695 def get_blocks(self): 653 return self._resizeable
696 return int(self._blocks)
697 654
698 ## 655 ##
699 # Brief description of function 656 # Returns minimum MB for resize
700 # @param self Parameter description
701 def get_min_sectors_for_resize(self): 657 def get_min_mb_for_resize(self):
702 if self.is_extended(): 658# if self.is_extended():
703 min_size = self._start 659# min_size = self._start
704 for part in self._device._partitions: 660# for part in self._device._partitions:
705 if part < 5: continue 661# if part < 5: continue
706 if part.get_end > min_size: min_size = part.get_end() 662# if part.get_end > min_size: min_size = part.get_end()
707 return min_size 663# return min_size
664# else:
665 if self._resizeable:
666 return self._min_mb_for_resize
708 else: 667 else:
709 return self._min_sectors_for_resize 668 return -1
710 669
711 ## 670 ##
712 # Brief description of function 671 # Returns maximum MB for resize
713 # @param self Parameter description
714 def get_max_sectors_for_resize(self): 672 def get_max_mb_for_resize(self):
715 free_start, free_end = self._device.get_free_space(self._end) 673 if self._resizeable:
716 if free_end == -1: return self._end 674 free_minor = 0
717 if free_start - 1 == self._end:
718 if self.is_logical(): 675 if self.is_logical():
719 if free_end <= self._device._partitions[self.get_extended_parent()]._end: 676 free_minor = self._minor + 0.9
720 return free_end - self._start
721 else:
722 return self._end - self._start
723 else: 677 else:
724 return free_end - self._start 678 free_minor = self._minor + 0.1
679 if free_minor in self._device._partitions:
680 return self._mb + self._device._partitions[free_minor]._mb
681 else:
682 return self._mb
683 else:
684 return -1
725 685
726 ## 686 ##
727 # Brief description of function 687 # Resizes the partition
728 # @param self Parameter description 688 # @param mb New size in MB
729 # @param start Parameter description
730 # @param end Parameter description
731 def resize(self, start, end): 689 def resize(self, mb):
732 part_at_start = self._device.get_partition_at(int(start)) 690 free_minor = self._minor
733 part_at_end = self._device.get_partition_at(int(end))
734 logicals = None
735 if self.is_logical(): 691 if self.is_logical():
736 parent = self.get_extended_parent() 692 free_minor += 0.9
737 parentstart = int(self._device._partitions[parent].get_start()) 693 else:
738 parentend = int(self._device._partitions[parent].get_end()) 694 free_minor += 0.1
739 if (start < parentstart) or (end > parentend): return 0 695 if mb < self._mb:
740 if self.is_extended(): 696 # Shrinking
741 logicals = self.get_logicals() 697 if not free_minor in self._device._partitions:
742 if len(logicals): 698 self._device._partitions[free_minor] = Partition(self._device, free_minor, 0, 0, 0, "free", format=False, existing=False)
743 logicals_start = self._device._partitions[logicals[0]].get_start() 699 self._device._partitions[free_minor]._mb += self._mb - mb
744 logicals_end = self._device._partitions[logicals[len(logicals)-1]].get_end() 700 self._mb = mb
745 if (start > logicals_start) or (end < logicals_end): return 0 701 elif mb == self._mb + self._device._partitions[free_minor]._mb:
746 if part_at_start in logicals: part_at_start = 0 702 # Using all available unallocated space
747 if part_at_end in logicals: part_at_end = 0 703 del self._device._partitions[free_minor]
748 if ((not part_at_start == 0) and (part_at_start != self._minor)) or ((not part_at_end == 0) and (part_at_end != self._minor)): 704 self._mb = mb
749 return 0 705 elif mb > self._mb:
750 self.set_start(start) 706 # Growing
751 self.set_end(end) 707 self._device._partitions[free_minor]._mb = mb - self._mb
752 return 1 708 self._mb = mb
753 709
754 ## 710##
755 # Brief description of function 711# Returns a list of detected partitionable devices
756 # @param self Parameter description
757 # @param message Parameter description
758 def _error(self, message):
759 "Raises an exception"
760 raise "PartitionObjectError", message
761
762
763def detect_devices(): 712def detect_devices():
764 "Returns a list of partitionable devices on the system"
765
766 devices = [] 713 devices = []
767 714
768 # Make sure sysfs exists 715 # Make sure sysfs exists
769 if not os.path.exists("/sys/bus"): 716 if not os.path.exists("/sys/bus"):
770 raise Exception, "no sysfs found (you MUST use a kernel >2.6)" 717 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "no sysfs found (you MUST use a kernel >2.6)")
771 # Make sure /proc/partitions exists 718 # Make sure /proc/partitions exists
772 if not os.path.exists("/proc/partitions"): 719 if not os.path.exists("/proc/partitions"):
773 raise Exception, "/proc/partitions does not exist!" 720 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "/proc/partitions does not exist! Please make sure procfs is in your kernel and mounted!")
774 721
775 # Load /proc/partitions into the variable 'partitions' 722 # Load /proc/partitions into the variable 'partitions'
776 partitions = [] 723 partitions = []
777 for line in open("/proc/partitions"): 724 for line in open("/proc/partitions"):
778 if len(line.split()) < 4 or not line.split()[0].isdigit() or \ 725 if len(line.split()) < 4 or not line.split()[0].isdigit() or not line.split()[1].isdigit():
779 not line.split()[1].isdigit():
780 continue 726 continue
781 727
782 # Get the major, minor and device name 728 # Get the major, minor and device name
783 major = line.split()[0] 729 major = line.split()[0]
784 minor = line.split()[1] 730 minor = line.split()[1]
794 # all the devices in /dev to try and find a 740 # all the devices in /dev to try and find a
795 # devices with the same major and minor 741 # devices with the same major and minor
796 if not os.path.exists(device): 742 if not os.path.exists(device):
797 device = None 743 device = None
798 for path, dirs, files in os.walk("/dev"): 744 for path, dirs, files in os.walk("/dev"):
799 for file in files: 745 for d_file in files:
800 full_file = os.path.join(path, file) 746 full_file = os.path.join(path, d_file)
801 if not os.path.exists(full_file): 747 if not os.path.exists(full_file):
802 continue 748 continue
803 statres = os.stat(full_file) 749 statres = os.stat(full_file)
804 fmaj = os.major(statres.st_rdev) 750 fmaj = os.major(statres.st_rdev)
805 fmin = os.minor(statres.st_rdev) 751 fmin = os.minor(statres.st_rdev)
817 if os.path.exists("/sys/bus/" + dev_type): 763 if os.path.exists("/sys/bus/" + dev_type):
818 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices") 764 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices")
819 765
820 # For each device in the devices on that bus 766 # For each device in the devices on that bus
821 for sysfs_device in sysfs_devices: 767 for sysfs_device in sysfs_devices:
822 dev_file = "/sys/bus/" + dev_type + "/devices/"\ 768 dev_file = "/sys/bus/" + dev_type + "/devices/" + sysfs_device + "/block/dev"
823 + sysfs_device + "/block/dev"
824 769
825 # If the file is not a block device, loop 770 # If the file is not a block device, loop
826 if not os.path.exists(dev_file): 771 if not os.path.exists(dev_file):
827 continue 772 continue
828 773
830 try: 775 try:
831 major, minor = open(dev_file).read().split(":") 776 major, minor = open(dev_file).read().split(":")
832 major = int(major) 777 major = int(major)
833 minor = int(minor) 778 minor = int(minor)
834 except: 779 except:
835 raise Exception, "invalid major minor in "\ 780 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "invalid major minor in " + dev_file)
836 + dev_file
837 781
838 # Find a device listed in /proc/partitions 782 # Find a device listed in /proc/partitions
839 # that has the same minor and major as our 783 # that has the same minor and major as our
840 # current block device. 784 # current block device.
841 for record in partitions: 785 for record in partitions:
842 if major == record[0] and minor == record[1]: 786 if major == record[0] and minor == record[1]:
843 devices.append(record[2]) 787 devices.append(record[2])
844 788
789 # For testing the partitioning code
790 if GLIUtility.is_file("/tmp/disk.img"):
791 devices.append("/tmp/disk.img")
792
845 # We have assembled the list of devices, so return it 793 # We have assembled the list of devices, so return it
846 return devices 794 return devices

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