/[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
7archinfo = { '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 'amd64': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
11 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False }
12 }
13
14##
15# This class provides a partitioning abstraction for the frontends
6class Device: 16class Device:
7 "Class representing a partitionable device." 17 "Class representing a partitionable device."
8 18
9 _device = None 19 _device = None
10 _partitions = None 20 _partitions = None
16 _parted_dev = None 26 _parted_dev = None
17 _parted_disk = None 27 _parted_disk = None
18 _sector_bytes = 0 28 _sector_bytes = 0
19 _total_mb = 0 29 _total_mb = 0
20 _arch = None 30 _arch = None
31 _disklabel = None
21 32
22 archinfo = { 'sparc': { 'fixedparts': [ { 'minor': 3, 'type': "wholedisk" } ], 'disklabel': 'sun', 'extended': False }, 33 ##
23 'hppa': { 'fixedparts': [ { 'minor': 1, 'type': "boot" } ], 'disklabel': 'msdos', 'extended': False }, 34 # Initialization function for GLIStorageDevice class
24 'x86': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True }, 35 # @param device Device node (e.g. /dev/hda) of device being represented
25 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False } 36 # @param arch="x86" Architecture that we're partition for (defaults to 'x86' for now)
26 }
27
28 def __init__(self, device, arch="x86"): 37 def __init__(self, device, arch="x86", set_geometry=True):
29 self._device = device 38 self._device = device
30 self._partitions = {} 39 self._partitions = {}
31 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512} 40 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512}
32 self._total_bytes = 0 41 self._total_bytes = 0
33 self._cylinder_bytes = 0 42 self._cylinder_bytes = 0
34 self._arch = arch 43 self._arch = arch
35 self._parted_dev = parted.PedDevice.get(self._device) 44 self._parted_dev = parted.PedDevice.get(self._device)
45 try:
36 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:
37 self.set_disk_geometry_from_disk() 51 self.set_disk_geometry_from_disk()
38 52
53 ##
54 # Sets disk geometry info from disk. This function is used internally by __init__()
39 def set_disk_geometry_from_disk(self): 55 def set_disk_geometry_from_disk(self):
40 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
41 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
42 self._sector_bytes = self._parted_dev.sector_size 58 self._sector_bytes = self._parted_dev.sector_size
43 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
44 self._total_sectors = self._parted_dev.length 60 self._total_sectors = self._parted_dev.length
45 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors'] 61 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors']
46 self._total_mb = int(self._total_bytes / MEGABYTE) 62 self._total_mb = int(self._total_bytes / MEGABYTE)
47 63
64 ##
65 # Sets partition info from disk.
48 def set_partitions_from_disk(self): 66 def set_partitions_from_disk(self):
49 last_part = 0 67 last_part = 0
50 last_log_part = 4 68 last_log_part = 4
51 parted_part = self._parted_disk.next_partition() 69 parted_part = self._parted_disk.next_partition()
52 while parted_part: 70 while parted_part:
53 part_mb = int((parted_part.geom.end - parted_part.geom.start + 1) * self._sector_bytes / MEGABYTE) 71 part_mb = int((parted_part.geom.end - parted_part.geom.start + 1) * self._sector_bytes / MEGABYTE)
54 if parted_part.num >= 1: 72 if parted_part.num >= 1:
55 fs_type = "" 73 fs_type = ""
56 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name 74 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
57 if parted_part.type == 2: fs_type = "extended" 75 if parted_part.type == 2: fs_type = "extended"
76 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
58 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)
59 elif parted_part.type_name == "free": 81 elif parted_part.type_name == "free":
60 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)
61 if parent_part: 83 if parent_part:
62 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)
63 last_log_part += 1 85 last_log_part += 1
64 else: 86 else:
65 self._partitions[Decimal(str(float(last_log_part+0.1)))] = Partition(self, Decimal(str(float(last_log_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)
66 last_part += 1 88 last_part += 1
67 parted_part = self._parted_disk.next_partition(parted_part) 89 parted_part = self._parted_disk.next_partition(parted_part)
68 90
91 ##
92 # Imports partition info from the install profile partition structure (currently does nothing)
93 # @param ips Parameter structure returned from install_profile.get_partition_tables()
69 def set_partitions_from_install_profile_structure(self, ips): 94 def set_partitions_from_install_profile_structure(self, ips):
70 pass
71# for part in ips: 95 for part in ips:
72# tmppart = ips[part] 96 tmppart = ips[part]
73# existing = False 97 existing = False
74# parted_part = self._parted_disk.get_partition(part) 98 if tmppart['origminor'] and not tmppart['format']:
75# if parted_part != None:
76# start = parted_part.geom.start / self._sectors_in_cylinder
77# end = parted_part.geom.end / self._sectors_in_cylinder
78# fs_type = ""
79# if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
80# if parted_part.type == 2: fs_type = "extended"
81# if int(tmppart['start']) == int(start) and int(tmppart['end']) == int(end) and tmppart['type'] == fs_type and tmppart['format'] == False:
82# existing = True 99 existing = True
83# 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'])
84 101
102 ##
103 # Returns name of device (e.g. /dev/hda) being represented
85 def get_device(self): 104 def get_device(self):
86 return self._device 105 return self._device
87 106
107 ##
108 # Combines free space and closes gaps in minor numbers. This is used internally
88 def tidy_partitions(self): 109 def tidy_partitions(self):
89 last_minor = 0 110 last_minor = 0
90 last_log_minor = 4 111 last_log_minor = 4
91 last_free = 0 112 last_free = 0
92 last_log_free = 0 113 last_log_free = 0
93 parts = self._partitions.keys() 114 parts = self._partitions.keys()
94 parts.sort() 115 parts.sort()
95 for part in parts: 116 for part in parts:
96 if self.archinfo[self._arch]['extended'] and part > 4: break 117 if archinfo[self._arch]['extended'] and part > 4: break
97 tmppart = self._partitions[part] 118 tmppart = self._partitions[part]
98 if tmppart.get_type() == "extended": 119 if tmppart.get_type() == "extended":
99 for part_log in parts: 120 for part_log in parts:
100 if part_log < Decimal("4.9"): continue 121 if part_log < 4.9: continue
101 tmppart_log = self._partitions[part_log] 122 tmppart_log = self._partitions[part_log]
102 if tmppart_log.get_type() == "free": 123 if tmppart_log.get_type() == "free":
103 if last_log_minor < last_log_free: 124 if last_log_minor < last_log_free:
104 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())
105 del self._partitions[part_log] 126 del self._partitions[part_log]
106 else: 127 else:
107 if not last_log_free: 128 if not last_log_free:
108 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
109 tmppart_log.set_minor(last_log_free) 132 tmppart_log.set_minor(last_log_free)
110 self._partitions[last_log_free] = tmppart_log 133 self._partitions[last_log_free] = tmppart_log
111 if part_log != last_log_free: del self._partitions[part_log] 134 if part_log != last_log_free: del self._partitions[part_log]
112 continue 135 continue
113 last_log_free = part_log
114 else: 136 else:
115 if part_log > (last_log_minor + 1): 137 if part_log > (last_log_minor + 1):
116 tmppart_log.set_minor(last_log_minor + 1) 138 tmppart_log.set_minor(last_log_minor + 1)
117 last_log_minor = last_log_minor + 1 139 last_log_minor = last_log_minor + 1
118 self._partitions[last_log_minor] = tmppart_log 140 self._partitions[last_log_minor] = tmppart_log
119 del self._partitions[part_log] 141 del self._partitions[part_log]
120 continue 142 continue
143 else:
121 last_log_minor = part_log 144 last_log_minor = part_log
122 if tmppart.get_type() == "free": 145 if tmppart.get_type() == "free":
123 if last_minor < last_free: 146 if last_minor < last_free:
124 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())
125 del self._partitions[part] 148 del self._partitions[part]
126 else: 149 else:
127 if not last_free: 150 if not last_free:
128 last_free = Decimal(str(last_minor + 0.1)) 151 last_free = last_minor + 0.1
152 else:
153 last_free = part
129 tmppart.set_minor(last_free) 154 tmppart.set_minor(last_free)
130 self._partitions[last_free] = tmppart 155 self._partitions[last_free] = tmppart
131 if part != last_free: del self._partitions[part] 156 if part != last_free: del self._partitions[part]
132 continue 157 continue
133 last_free = part
134 else: 158 else:
135 if part > (last_minor + 1): 159 if part > (last_minor + 1):
136 tmppart.set_minor(last_minor + 1) 160 tmppart.set_minor(last_minor + 1)
137 last_minor = last_minor + 1 161 last_minor = last_minor + 1
138 self._partitions[last_minor] = tmppart 162 self._partitions[last_minor] = tmppart
139 del self._partitions[part] 163 del self._partitions[part]
140 continue 164 continue
165 else:
141 last_minor = part 166 last_minor = part
142 167
168 ##
169 # 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
143 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=''):
144 free_minor = Decimal(str(free_minor)) 178 free_minor = free_minor
145 new_minor = int(free_minor) + 1 179 new_minor = int(free_minor) + 1
146# 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)
147 if self._partitions.has_key(new_minor): 181 if self._partitions.has_key(new_minor):
148 parts = self._partitions.keys() 182 parts = self._partitions.keys()
149 parts.sort() 183 parts.sort()
163 self._partitions[i+1] = self._partitions[i] 197 self._partitions[i+1] = self._partitions[i]
164 if i == new_minor: stopscooting = 1 198 if i == new_minor: stopscooting = 1
165 if mb != self._partitions[free_minor].get_mb(): 199 if mb != self._partitions[free_minor].get_mb():
166 old_free_mb = self._partitions[free_minor].get_mb() 200 old_free_mb = self._partitions[free_minor].get_mb()
167 del self._partitions[free_minor] 201 del self._partitions[free_minor]
168 if self.archinfo[self._arch]['extended'] and new_minor >= 5: 202 if archinfo[self._arch]['extended'] and new_minor >= 5:
169 free_minor = Decimal(str(new_minor + 0.9)) 203 free_minor = new_minor + 0.9
170 else: 204 else:
171 free_minor = Decimal(str(new_minor + 0.1)) 205 free_minor = new_minor + 0.1
172 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")
173# 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)
174 else: 208 else:
175 del self._partitions[free_minor] 209 del self._partitions[free_minor]
176 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)
177 if type == "extended": 211 if type == "extended":
178 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")
179 self.tidy_partitions() 213 self.tidy_partitions()
180 214
215 ##
216 # Removes partition from partition info
217 # @param minor Minor of partition to remove
181 def remove_partition(self, minor): 218 def remove_partition(self, minor):
182 tmppart = self._partitions[int(minor)] 219 tmppart = self._partitions[int(minor)]
183 free_minor = 0 220 free_minor = 0
184 if tmppart.is_logical(): 221 if tmppart.is_logical():
185 free_minor = Decimal(str(float(minor)-0.1)) 222 free_minor = minor-0.1
186 else: 223 else:
187 free_minor = Decimal(str(float(minor)-0.9)) 224 free_minor = minor-0.9
188 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)
189 del self._partitions[int(minor)] 226 del self._partitions[int(minor)]
190 self.tidy_partitions() 227 self.tidy_partitions()
191 228
229 ##
230 # Returns free space (no longer used)
231 # @param start Start sector for search
192 def get_free_space(self, start): 232 def get_free_space(self, start):
193 GAP_SIZE = 100 233 GAP_SIZE = 100
194 parts = self._partitions.keys() 234 parts = self._partitions.keys()
195 parts.sort() 235 parts.sort()
196 lastend_pri = 0 236 lastend_pri = 0
223 if free_start == -1 and lastend_pri < self._total_sectors: 263 if free_start == -1 and lastend_pri < self._total_sectors:
224 free_start = lastend_pri 264 free_start = lastend_pri
225 free_end = self._total_sectors 265 free_end = self._total_sectors
226 return (free_start, free_end) 266 return (free_start, free_end)
227 267
268 ##
269 # Gets partition containing a certain sector (no longer used)
270 # @param sector Sector to look at
271 # @param ignore_extended=1 Ignore extended partitions
228 def get_partition_at(self, sector, ignore_extended=1): 272 def get_partition_at(self, sector, ignore_extended=1):
229 parts = self._partitions.keys() 273 parts = self._partitions.keys()
230 parts.sort() 274 parts.sort()
231 for part in parts: 275 for part in parts:
232 tmppart = self._partitions[part] 276 tmppart = self._partitions[part]
233 if ignore_extended and tmppart.is_extended(): continue 277 if ignore_extended and tmppart.is_extended(): continue
234 if (sector >= tmppart.get_start()) and (sector <= tmppart.get_end()): 278 if (sector >= tmppart.get_start()) and (sector <= tmppart.get_end()):
235 return part 279 return part
236 return 0 280 return 0
237 281
282 ##
283 # Returns free minor (no longer used)
284 # @param start Parameter description
285 # @param end Parameter description
238 def get_free_minor_at(self, start, end): 286 def get_free_minor_at(self, start, end):
239 parts = self._partitions.keys() 287 parts = self._partitions.keys()
240 parts.sort() 288 parts.sort()
241 minor = 1 289 minor = 1
242 lastpart = 0 290 lastpart = 0
262 break 310 break
263 minor = part + 1 311 minor = part + 1
264 lastpart = part 312 lastpart = part
265 return minor 313 return minor
266 314
315 ##
316 # Returns an ordered list (disk order) of partition minors
267 def get_ordered_partition_list(self): 317 def get_ordered_partition_list(self):
268 parts = self._partitions.keys() 318 parts = self._partitions.keys()
269 parts.sort() 319 parts.sort()
270 partlist = [] 320 partlist = []
271 tmppart = None 321 tmppart = None
272 tmppart_log = None
273 for part in parts: 322 for part in parts:
274 if self.archinfo[self._arch]['extended'] and part > Decimal("4.1"): break 323 if archinfo[self._arch]['extended'] and part > 4.1: break
275 tmppart = self._partitions[part] 324 tmppart = self._partitions[part]
276 partlist.append(part) 325 partlist.append(part)
277 if tmppart.is_extended(): 326 if tmppart.is_extended():
278 for part_log in parts: 327 for part_log in parts:
279 if part_log < Decimal("4.9"): continue 328 if part_log < 4.9: continue
280 tmppart_log = self._partitions[part_log]
281 partlist.append(part_log) 329 partlist.append(part_log)
282 return partlist 330 return partlist
283 331
332 ##
333 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables()
284 def get_install_profile_structure(self): 334 def get_install_profile_structure(self):
285 devdic = {} 335 devdic = {}
286 for part in self._partitions: 336 for part in self._partitions:
287 tmppart = self._partitions[part] 337 tmppart = self._partitions[part]
288 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() }
289 return devdic 339 return devdic
290 340
341 ##
342 # Returns the minor of the extended partition, if any
291 def get_extended_partition(self): 343 def get_extended_partition(self):
292 for part in self._partitions: 344 for part in self._partitions:
293 tmppart = self._partitions[part] 345 tmppart = self._partitions[part]
294 if tmppart.is_extended(): 346 if tmppart.is_extended():
295 return part 347 return part
296 return 0 348 return 0
297 349
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 ##
361 # Returns the number of sectors on the device
298 def get_num_sectors(self): 362 def get_num_sectors(self):
299 return int(self._total_sectors) 363 return int(self._total_sectors)
300 364
365 ##
366 # Returns the size of a cylinder in bytes
301 def get_cylinder_size(self): 367 def get_cylinder_size(self):
302 return int(self._cylinder_bytes) 368 return int(self._cylinder_bytes)
303 369
370 ##
371 # Returns the size of a sector in bytes
304 def get_sector_size(self): 372 def get_sector_size(self):
305 return int(self._sector_bytes) 373 return int(self._sector_bytes)
306 374
375 ##
376 # Returns the number of cylinders
307 def get_num_cylinders(self): 377 def get_num_cylinders(self):
308 return int(self._geometry['cylinders']) 378 return int(self._geometry['cylinders'])
309 379
380 ##
381 # Returns the total number of bytes on the device
310 def get_drive_bytes(self): 382 def get_drive_bytes(self):
311 return int(self._total_bytes) 383 return int(self._total_bytes)
312 384
385 ##
386 # Returns the total number of MB on the device
313 def get_total_mb(self): 387 def get_total_mb(self):
314 return self._total_mb 388 return self._total_mb
315 389
390 ##
391 # Returns partition info dictionary
316 def get_partitions(self): 392 def get_partitions(self):
317 return self._partitions 393 return self._partitions
318 394
319# def print_partitions(self): 395 ##
320# for part in self._partitions.keys(): 396 # Prints disk geometry to STDOUT (no longer used)
321# print self._partitions[part].return_info()
322
323 def print_geometry(self): 397 def print_geometry(self):
324 print self._total_bytes, self._geometry 398 print self._total_bytes, self._geometry
325 399
326 def _error(self, message): 400 ##
327 "Raises an exception" 401 # Utility function for running a command and returning it's output as a list
328 raise "DeviceObjectError", message 402 # @param cmd Command to run
329
330 def _run(self, cmd): 403 def _run(self, cmd):
331 "Runs a command and returns the output" 404 "Runs a command and returns the output"
332 405
333 # Run command 406 # Run command
334 output_string = commands.getoutput(cmd) 407 output_string = commands.getoutput(cmd)
348 output_string = output_string[index:] 421 output_string = output_string[index:]
349 422
350 # return output 423 # return output
351 return output_list 424 return output_list
352 425
353 426##
427# This class represents a partition within a GLIStorageDevice object
354class Partition: 428class Partition:
355 "Class representing a single partition within a Device object" 429 "Class representing a single partition within a Device object"
356 430
357 _device = None 431 _device = None
358 _minor = 0 432 _minor = 0
362 _type = None 436 _type = None
363 _mountpoint = None 437 _mountpoint = None
364 _mountopts = None 438 _mountopts = None
365 _format = None 439 _format = None
366 _resizeable = None 440 _resizeable = None
367 _min_sectors_for_resize = 0 441 _min_mb_for_resize = 0
368 _mb = 0 442 _mb = 0
369 443
444 ##
445 # Initialization function for the Partition class
446 # @param device Parent GLIStorageDevice object
447 # @param minor Minor of partition
448 # @param mb Parameter Size of partition in MB
449 # @param start Parameter Start sector of partition
450 # @param end Parameter Start sector of partition
451 # @param type Parameter Type of partition (ext2, ext3, fat32, linux-swap, free, extended, etc.)
452 # @param mountpoint='' Mountpoint of partition
453 # @param mountopts='' Mount options of partition
454 # @param format=True Format partition
455 # @param existing=False This partition exists on disk
370 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):
371 self._device = device 457 self._device = device
372 self._minor = float(minor) 458 self._minor = float(minor)
373 if existing: self._orig_minor = int(minor)
374 self._start = int(start) 459 self._start = int(start)
375 self._end = int(end) 460 self._end = int(end)
376 self._type = type or "unknown" 461 self._type = type or "unknown"
377 self._mountpoint = mountpoint 462 self._mountpoint = mountpoint
378 self._mountopts = mountopts 463 self._mountopts = mountopts
379 self._format = format 464 self._format = format
380 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)
381 if existing: 472 if existing:
382 self._orig_minor = self._minor
383 parted_part = device._parted_disk.get_partition(minor) 473 parted_part = device._parted_disk.get_partition(self._orig_minor)
384 label_type = device._parted_disk.type.name 474 label_type = device._parted_disk.type.name
385 if label_type == "loop": 475 if label_type == "loop":
386 dev_node = device._device 476 dev_node = device._device
387 else: 477 else:
388 dev_node = device._device + str(minor) 478 dev_node = device._device + str(self._orig_minor)
479 print "dev_node = " + dev_node
389 if type == "ntfs": 480 if type == "ntfs":
390 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 .\+//'"))
391 self._min_cylinders_for_resize = int(min_bytes / self._device._cylinder_bytes) + 1 482 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
392 self._resizeable == True 483 self._resizeable = True
393 elif type == "ext2" or type == "ext3": 484 elif type == "ext2" or type == "ext3":
394 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\+//'")))
395 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\+//'")))
396 free_sec = int(int(block_size) * int(free_blocks) / self._device._sector_bytes) 487 free_bytes = int(block_size * free_blocks)
397 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
398 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
399 self._resizeable == True 490 self._resizeable = True
400 else: 491 else:
401 parted_part = self._device._parted_disk.get_partition(int(self._minor)) 492 parted_part = self._device._parted_disk.get_partition(int(self._orig_minor))
402 try: 493 try:
403 parted_fs = parted_part.geom.file_system_open() 494 parted_fs = parted_part.geom.file_system_open()
404 except: 495 except:
405 self._resizeable = False 496 self._resizeable = False
406 return 497 return
407 resize_constraint = parted_fs.get_resize_constraint() 498 resize_constraint = parted_fs.get_resize_constraint()
408 min_size = resize_constraint.min_size 499 min_bytes = resize_constraint.min_size * self._device._sector_bytes
409 if int(min_size) != min_size: min_size = int(min_size) + 1 500 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
410 self._min_sectors_for_resize = min_size
411 self._resizeable = True 501 self._resizeable = True
412 502
503 ##
504 # Returns whether or not the partition is extended
413 def is_extended(self): 505 def is_extended(self):
414 if self._type == "extended": 506 if self._type == "extended":
415 return True 507 return True
416 else: 508 else:
417 return False 509 return False
418 510
511 ##
512 # Returns whether or not the partition is logical
419 def is_logical(self): 513 def is_logical(self):
420 if self._type == "free": 514 if self._type == "free":
421 if int(self._minor) + Decimal("0.9") == Decimal(str(self._minor)): 515 if int(self._minor) + 0.9 == self._minor:
422 return True 516 return True
423 else: 517 else:
424 return False 518 return False
425 elif self._device.archinfo[self._device._arch]['extended'] and self._minor > 4: 519 elif archinfo[self._device._arch]['extended'] and self._minor > 4:
426 return True 520 return True
427 else: 521 else:
428 return False 522 return False
429 523
524 ##
525 # Returns a list of logical partitions if this is an extended partition
430 def get_logicals(self): 526 def get_logicals(self):
431 if not self.is_extended(): 527 if not self.is_extended():
432 return None 528 return None
433 logicals = [] 529 logicals = []
434 start = self._start
435 parts = self._device._partitions.keys() 530 parts = self._device._partitions.keys()
436 parts.sort() 531 parts.sort()
437 for part in parts: 532 for part in parts:
438 if part < 5: continue 533 if part < 5: continue
439 logicals.append(part) 534 logicals.append(part)
440 logicals.sort() 535 logicals.sort()
441 return logicals 536 return logicals
442 537
538 ##
539 # Returns the extened parent partition if this is a logical partition (no longer used)
443 def get_extended_parent(self): 540 def get_extended_parent(self):
444 if not self.is_logical(): 541 if not self.is_logical():
445 return None 542 return None
446 else: 543 else:
447 return self._device.get_partition_at(self._start, ignore_extended=0) 544 return self._device.get_partition_at(self._start, ignore_extended=0)
448 545
546 ##
547 # Sets the start sector for the partition
548 # @param start Start sector
449 def set_start(self, start): 549 def set_start(self, start):
450 self._start = int(start) 550 self._start = int(start)
451 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
452 551
552 ##
553 # Returns the start sector for the partition
453 def get_start(self): 554 def get_start(self):
454 return int(self._start) 555 return int(self._start)
455 556
557 ##
558 # Sets the end sector of the partition
559 # @param end End sector
456 def set_end(self, end): 560 def set_end(self, end):
457 self._end = int(end) 561 self._end = int(end)
458 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
459 562
563 ##
564 # Returns end sector for the partition
460 def get_end(self): 565 def get_end(self):
461 return int(self._end) 566 return int(self._end)
462 567
568 ##
569 # Returns size of partition in MB
463 def get_mb(self): 570 def get_mb(self):
464 return int(self._mb) 571 return int(self._mb)
465 572
573 ##
574 # Sets size of partition in MB
575 # @param mb Parameter description
466 def set_mb(self, mb): 576 def set_mb(self, mb):
467 self._mb = int(mb) 577 self._mb = int(mb)
468 578
579 ##
580 # Sets type of partition
581 # @param type Parameter description
469 def set_type(self, type): 582 def set_type(self, type):
470 self._type = type 583 self._type = type
471 584
585 ##
586 # Returns type of partition
472 def get_type(self): 587 def get_type(self):
473 return self._type 588 return self._type
474 589
590 ##
591 # Returns parent GLIStorageDevice object
475 def get_device(self): 592 def get_device(self):
476 return self._device 593 return self._device
477 594
595 ##
596 # Sets minor of partition
597 # @param minor New minor
478 def set_minor(self, minor): 598 def set_minor(self, minor):
479 self._minor = float(minor) 599 self._minor = float(minor)
480 600
601 ##
602 # Returns minor of partition
481 def get_minor(self): 603 def get_minor(self):
482 return float(self._minor) 604 return float(self._minor)
483 605
606 ##
607 # Sets the original minor of the partition
608 # @param orig_minor Parameter description
484 def set_orig_minor(self, orig_minor): 609 def set_orig_minor(self, orig_minor):
485 self._orig_minor = int(orig_minor) 610 self._orig_minor = int(orig_minor)
486 611
612 ##
613 # Returns the original minor of the partition
487 def get_orig_minor(self): 614 def get_orig_minor(self):
488 return self._orig_minor 615 return self._orig_minor
489 616
617 ##
618 # Sets the mountpoint for the partition
619 # @param mountpoint Mountpoint
490 def set_mountpoint(self, mountpoint): 620 def set_mountpoint(self, mountpoint):
491 self._mountpoint = mountpoint 621 self._mountpoint = mountpoint
492 622
623 ##
624 # Returns the mountpoint for the partition
493 def get_mountpoint(self): 625 def get_mountpoint(self):
494 return self._mountpoint 626 return self._mountpoint
495 627
628 ##
629 # Sets the mount options for the partition
630 # @param mountopts Mount options
496 def set_mountopts(self, mountopts): 631 def set_mountopts(self, mountopts):
497 self._mountopts = mountopts 632 self._mountopts = mountopts
498 633
634 ##
635 # Returns the mount options for the partition
499 def get_mountopts(self): 636 def get_mountopts(self):
500 return self._mountopts 637 return self._mountopts
501 638
639 ##
640 # Set whether to format the partition
641 # @param format Format this partition (True/False)
502 def set_format(self, format): 642 def set_format(self, format):
503 self._format = format 643 self._format = format
504 644
645 ##
646 # Returns whether to format the partition
505 def get_format(self): 647 def get_format(self):
506 return self._format 648 return self._format
507 649
508 def get_blocks(self): 650 ##
509 return int(self._blocks) 651 # Returns whether the partition is resizeable
652 def is_resizeable(self):
653 return self._resizeable
510 654
655 ##
656 # Returns minimum MB for resize
511 def get_min_sectors_for_resize(self): 657 def get_min_mb_for_resize(self):
512 if self.is_extended(): 658# if self.is_extended():
513 min_size = self._start 659# min_size = self._start
514 for part in self._device._partitions: 660# for part in self._device._partitions:
515 if part < 5: continue 661# if part < 5: continue
516 if part.get_end > min_size: min_size = part.get_end() 662# if part.get_end > min_size: min_size = part.get_end()
517 return min_size 663# return min_size
664# else:
665 if self._resizeable:
666 return self._min_mb_for_resize
518 else: 667 else:
519 return self._min_sectors_for_resize 668 return -1
520 669
670 ##
671 # Returns maximum MB for resize
521 def get_max_sectors_for_resize(self): 672 def get_max_mb_for_resize(self):
522 free_start, free_end = self._device.get_free_space(self._end) 673 if self._resizeable:
523 if free_end == -1: return self._end 674 free_minor = 0
524 if free_start - 1 == self._end:
525 if self.is_logical(): 675 if self.is_logical():
526 if free_end <= self._device._partitions[self.get_extended_parent()]._end: 676 free_minor = self._minor + 0.9
527 return free_end - self._start
528 else:
529 return self._end - self._start
530 else: 677 else:
531 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
532 685
686 ##
687 # Resizes the partition
688 # @param mb New size in MB
533 def resize(self, start, end): 689 def resize(self, mb):
534 part_at_start = self._device.get_partition_at(int(start)) 690 free_minor = self._minor
535 part_at_end = self._device.get_partition_at(int(end))
536 logicals = None
537 if self.is_logical(): 691 if self.is_logical():
538 parent = self.get_extended_parent() 692 free_minor += 0.9
539 parentstart = int(self._device._partitions[parent].get_start()) 693 else:
540 parentend = int(self._device._partitions[parent].get_end()) 694 free_minor += 0.1
541 if (start < parentstart) or (end > parentend): return 0 695 if mb < self._mb:
542 if self.is_extended(): 696 # Shrinking
543 logicals = self.get_logicals() 697 if not free_minor in self._device._partitions:
544 if len(logicals): 698 self._device._partitions[free_minor] = Partition(self._device, free_minor, 0, 0, 0, "free", format=False, existing=False)
545 logicals_start = self._device._partitions[logicals[0]].get_start() 699 self._device._partitions[free_minor]._mb += self._mb - mb
546 logicals_end = self._device._partitions[logicals[len(logicals)-1]].get_end() 700 self._mb = mb
547 if (start > logicals_start) or (end < logicals_end): return 0 701 elif mb == self._mb + self._device._partitions[free_minor]._mb:
548 if part_at_start in logicals: part_at_start = 0 702 # Using all available unallocated space
549 if part_at_end in logicals: part_at_end = 0 703 del self._device._partitions[free_minor]
550 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
551 return 0 705 elif mb > self._mb:
552 self.set_start(start) 706 # Growing
553 self.set_end(end) 707 self._device._partitions[free_minor]._mb = mb - self._mb
554 return 1 708 self._mb = mb
555 709
556 def _error(self, message): 710##
557 "Raises an exception" 711# Returns a list of detected partitionable devices
558 raise "PartitionObjectError", message
559
560
561def detect_devices(): 712def detect_devices():
562 "Returns a list of partitionable devices on the system"
563
564 devices = [] 713 devices = []
565 714
566 # Make sure sysfs exists 715 # Make sure sysfs exists
567 if not os.path.exists("/sys/bus"): 716 if not os.path.exists("/sys/bus"):
568 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)")
569 # Make sure /proc/partitions exists 718 # Make sure /proc/partitions exists
570 if not os.path.exists("/proc/partitions"): 719 if not os.path.exists("/proc/partitions"):
571 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!")
572 721
573 # Load /proc/partitions into the variable 'partitions' 722 # Load /proc/partitions into the variable 'partitions'
574 partitions = [] 723 partitions = []
575 for line in open("/proc/partitions"): 724 for line in open("/proc/partitions"):
576 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():
577 not line.split()[1].isdigit():
578 continue 726 continue
579 727
580 # Get the major, minor and device name 728 # Get the major, minor and device name
581 major = line.split()[0] 729 major = line.split()[0]
582 minor = line.split()[1] 730 minor = line.split()[1]
592 # all the devices in /dev to try and find a 740 # all the devices in /dev to try and find a
593 # devices with the same major and minor 741 # devices with the same major and minor
594 if not os.path.exists(device): 742 if not os.path.exists(device):
595 device = None 743 device = None
596 for path, dirs, files in os.walk("/dev"): 744 for path, dirs, files in os.walk("/dev"):
597 for file in files: 745 for d_file in files:
598 full_file = os.path.join(path, file) 746 full_file = os.path.join(path, d_file)
599 if not os.path.exists(full_file): 747 if not os.path.exists(full_file):
600 continue 748 continue
601 statres = os.stat(full_file) 749 statres = os.stat(full_file)
602 fmaj = os.major(statres.st_rdev) 750 fmaj = os.major(statres.st_rdev)
603 fmin = os.minor(statres.st_rdev) 751 fmin = os.minor(statres.st_rdev)
615 if os.path.exists("/sys/bus/" + dev_type): 763 if os.path.exists("/sys/bus/" + dev_type):
616 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices") 764 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices")
617 765
618 # For each device in the devices on that bus 766 # For each device in the devices on that bus
619 for sysfs_device in sysfs_devices: 767 for sysfs_device in sysfs_devices:
620 dev_file = "/sys/bus/" + dev_type + "/devices/"\ 768 dev_file = "/sys/bus/" + dev_type + "/devices/" + sysfs_device + "/block/dev"
621 + sysfs_device + "/block/dev"
622 769
623 # If the file is not a block device, loop 770 # If the file is not a block device, loop
624 if not os.path.exists(dev_file): 771 if not os.path.exists(dev_file):
625 continue 772 continue
626 773
628 try: 775 try:
629 major, minor = open(dev_file).read().split(":") 776 major, minor = open(dev_file).read().split(":")
630 major = int(major) 777 major = int(major)
631 minor = int(minor) 778 minor = int(minor)
632 except: 779 except:
633 raise Exception, "invalid major minor in "\ 780 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "invalid major minor in " + dev_file)
634 + dev_file
635 781
636 # Find a device listed in /proc/partitions 782 # Find a device listed in /proc/partitions
637 # that has the same minor and major as our 783 # that has the same minor and major as our
638 # current block device. 784 # current block device.
639 for record in partitions: 785 for record in partitions:
640 if major == record[0] and minor == record[1]: 786 if major == record[0] and minor == record[1]:
641 devices.append(record[2]) 787 devices.append(record[2])
642 788
789 # For testing the partitioning code
790 if GLIUtility.is_file("/tmp/disk.img"):
791 devices.append("/tmp/disk.img")
792
643 # We have assembled the list of devices, so return it 793 # We have assembled the list of devices, so return it
644 return devices 794 return devices

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