/[gli]/trunk/src/GLIStorageDevice.py
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1import commands, string, re, os, parted 1import commands, string, os, parted
2from GLIException import *
3import GLIUtility
2 4
5MEGABYTE = 1024 * 1024
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
3class Device: 16class Device:
4 "Class representing a partitionable device." 17 "Class representing a partitionable device."
5 18
6 _device = None 19 _device = None
7 _partitions = None 20 _partitions = None
10 _total_sectors = 0 23 _total_sectors = 0
11 _cylinder_bytes = 0 24 _cylinder_bytes = 0
12 _sectors_in_cylinder = 0 25 _sectors_in_cylinder = 0
13 _parted_dev = None 26 _parted_dev = None
14 _parted_disk = None 27 _parted_disk = None
15 _fdiskcall = "fdisk -l " 28 _sector_bytes = 0
16 29 _total_mb = 0
17 def __init__(self, device): 30 _arch = None
31 _disklabel = None
32
33 ##
34 # 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 def __init__(self, device, arch="x86", set_geometry=True):
18 self._device = device 38 self._device = device
19 self._partitions = {} 39 self._partitions = {}
20 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512} 40 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512}
21 self._total_bytes = 0 41 self._total_bytes = 0
22 self._cylinder_bytes = 0 42 self._cylinder_bytes = 0
43 self._arch = arch
23 self._parted_dev = parted.PedDevice.get(self._device) 44 self._parted_dev = parted.PedDevice.get(self._device)
45 try:
24 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:
25 self.set_disk_geometry_from_disk() 51 self.set_disk_geometry_from_disk()
26 52
53 ##
54 # Sets disk geometry info from disk. This function is used internally by __init__()
27 def set_disk_geometry_from_disk(self): 55 def set_disk_geometry_from_disk(self):
28 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
29 if string.strip(commands.getoutput("echo " + self._device + " | grep '/hd'")) == self._device: # IDE
30 proc_dir = "/proc/ide/" + commands.getoutput("echo " + self._device + " | cut -d '/' -f 3")
31 proc_dir = string.strip(proc_dir)
32 heads = commands.getoutput("cat " + proc_dir + "/geometry | grep logical | cut -d '/' -f 2")
33 sectors = commands.getoutput("cat " + proc_dir + "/geometry | grep logical | cut -d '/' -f 3")
34 total_sectors = commands.getoutput("cat " + proc_dir + "/capacity")
35 cylinders = int(total_sectors) / (int(heads) * int(sectors))
36 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = int(heads), int(sectors), int(cylinders)
37 else: #SCSI
38 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders 57 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders
58 self._sector_bytes = self._parted_dev.sector_size
39 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._parted_dev.sector_size 59 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes
40 self._total_sectors = self._geometry['cylinders'] * self._geometry['heads'] * self._geometry['sectors'] 60 self._total_sectors = self._parted_dev.length
41 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors'] 61 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors']
62 self._total_mb = int(self._total_bytes / MEGABYTE)
42 63
64 ##
65 # Sets partition info from disk.
43 def set_partitions_from_disk(self): 66 def set_partitions_from_disk(self):
67 last_part = 0
68 last_log_part = 4
44 parted_part = self._parted_disk.next_partition() 69 parted_part = self._parted_disk.next_partition()
45 while parted_part != None: 70 while parted_part:
71 part_mb = int((parted_part.geom.end - parted_part.geom.start + 1) * self._sector_bytes / MEGABYTE)
46 if parted_part.num < 1: 72 if parted_part.num >= 1:
47 parted_part = self._parted_disk.next_partition(parted_part)
48 continue
49 fs_type = "" 73 fs_type = ""
50 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
51 if parted_part.type == 2: fs_type = "extended" 75 if parted_part.type == 2: fs_type = "extended"
52 self._partitions[int(parted_part.num)] = Partition(self, parted_part.num, '', (parted_part.geom.start / self._sectors_in_cylinder), (parted_part.geom.end / self._sectors_in_cylinder), (parted_part.geom.end - parted_part.geom.start), fs_type, format=False, existing=True) 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
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)
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 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 last_log_part += 1
86 else:
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)
88 last_part += 1
53 parted_part = self._parted_disk.next_partition(parted_part) 89 parted_part = self._parted_disk.next_partition(parted_part)
54 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()
55 def set_partitions_from_install_profile_structure(self, ips): 94 def set_partitions_from_install_profile_structure(self, ips):
56 for part in ips: 95 for part in ips:
57 tmppart = ips[part] 96 tmppart = ips[part]
58 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'])) 97 existing = False
98 if tmppart['origminor'] and not tmppart['format']:
99 existing = True
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'])
59 101
102 ##
103 # Returns name of device (e.g. /dev/hda) being represented
60 def get_device(self): 104 def get_device(self):
61 return self._device 105 return self._device
62 106
107 ##
108 # Combines free space and closes gaps in minor numbers. This is used internally
63 def clear_partitions(self): 109 def tidy_partitions(self):
64 self._partitions = {} 110 last_minor = 0
111 last_log_minor = 4
112 last_free = 0
113 last_log_free = 0
114 parts = self._partitions.keys()
115 parts.sort()
116 for part in parts:
117 if archinfo[self._arch]['extended'] and part > 4: break
118 tmppart = self._partitions[part]
119 if tmppart.get_type() == "extended":
120 for part_log in parts:
121 if part_log < 4.9: continue
122 tmppart_log = self._partitions[part_log]
123 if tmppart_log.get_type() == "free":
124 if last_log_minor < last_log_free:
125 self._partitions[last_log_free].set_mb(self._partitions[last_log_free].get_mb()+tmppart_log.get_mb())
126 del self._partitions[part_log]
127 else:
128 if not last_log_free:
129 last_log_free = last_log_minor + 0.9
130 else:
131 lost_log_free = part_log
132 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 else:
137 if part_log > (last_log_minor + 1):
138 tmppart_log.set_minor(last_log_minor + 1)
139 last_log_minor = last_log_minor + 1
140 self._partitions[last_log_minor] = tmppart_log
141 del self._partitions[part_log]
142 continue
143 else:
144 last_log_minor = part_log
145 if tmppart.get_type() == "free":
146 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 else:
150 if not last_free:
151 last_free = last_minor + 0.1
152 else:
153 last_free = part
154 tmppart.set_minor(last_free)
155 self._partitions[last_free] = tmppart
156 if part != last_free: del self._partitions[part]
157 continue
158 else:
159 if part > (last_minor + 1):
160 tmppart.set_minor(last_minor + 1)
161 last_minor = last_minor + 1
162 self._partitions[last_minor] = tmppart
163 del self._partitions[part]
164 continue
165 else:
166 last_minor = part
65 167
66 def add_partition(self, minor, start, end, type): 168 ##
67 free_start, free_end = self.get_free_space(start) 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
177 def add_partition(self, free_minor, mb, start, end, type, mountpoint='', mountopts=''):
178 free_minor = free_minor
68 minor = int(minor) 179 new_minor = int(free_minor) + 1
69 if not free_end: 180# print "add_partition(): free_minor=" + str(free_minor) + ", new_minor=" + str(new_minor)
70 return False
71 if self._partitions.has_key(minor): 181 if self._partitions.has_key(new_minor):
72 parts = self._partitions.keys() 182 parts = self._partitions.keys()
73 parts.sort() 183 parts.sort()
74 parts.reverse() 184 parts.reverse()
75 hole_at = 0 185 hole_at = 0
76 for i in range(1, parts[0]+1): 186 for i in range(1, parts[0]+1):
77 if i <= minor: continue 187 if i <= new_minor: continue
78 if not self._partitions.has_key(int(i)): 188 if not self._partitions.has_key(i):
79 hole_at = i 189 hole_at = i
80 break 190 break
81 stopscooting = 0 191 stopscooting = 0
82 for i in parts: 192 for i in parts:
83 if stopscooting: break 193 if stopscooting: break
84 if (i >= hole_at) and (hole_at): continue 194 if i >= hole_at and hole_at: continue
85 if i >= minor: 195 if i >= new_minor:
86 self._partitions[i].set_minor(i+1) 196 self._partitions[i].set_minor(i+1)
87 self._partitions[i+1] = self._partitions[i] 197 self._partitions[i+1] = self._partitions[i]
88 if i == minor: stopscooting = 1 198 if i == new_minor: stopscooting = 1
89 self._partitions[minor] = Partition(self, minor, '', start, end, 0, type) 199 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 if archinfo[self._arch]['extended'] and new_minor >= 5:
203 free_minor = new_minor + 0.9
204 else:
205 free_minor = new_minor + 0.1
206 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 self._partitions[new_minor] = Partition(self, new_minor, mb, start, end, type, mountpoint=mountpoint, mountopts=mountopts)
211 if type == "extended":
212 self._partitions[4.9] = Partition(self, 4.9, mb, 0, 0, "free")
213 self.tidy_partitions()
90 214
215 ##
216 # Removes partition from partition info
217 # @param minor Minor of partition to remove
91 def remove_partition(self, minor): 218 def remove_partition(self, minor):
219 tmppart = self._partitions[int(minor)]
220 free_minor = 0
221 if tmppart.is_logical():
222 free_minor = minor-0.1
223 else:
224 free_minor = minor-0.9
225 self._partitions[free_minor] = Partition(self, free_minor, tmppart.get_mb(), 0, 0, "free", format=False, existing=False)
92 del self._partitions[int(minor)] 226 del self._partitions[int(minor)]
227 self.tidy_partitions()
93 228
229 ##
230 # Returns free space (no longer used)
231 # @param start Start sector for search
94 def get_free_space(self, start): 232 def get_free_space(self, start):
233 GAP_SIZE = 100
95 parts = self._partitions.keys() 234 parts = self._partitions.keys()
96 parts.sort() 235 parts.sort()
97 lastend_pri = 0 236 lastend_pri = 0
98 lastend_log = 0 237 lastend_log = 0
99 free_start = -1 238 free_start = -1
100 free_end = -1 239 free_end = -1
101 if start > self.get_num_cylinders(): return (-1, -1) 240 if start > self._total_sectors: return (-1, -1)
102 for part in parts: 241 for part in parts:
103 if part > 4: break 242 if part > 4: break
104 tmppart = self._partitions[part] 243 tmppart = self._partitions[part]
105 if (tmppart.get_start() > lastend_pri) and (lastend_pri >= start): 244 if (tmppart.get_start() > (lastend_pri + GAP_SIZE)) and (lastend_pri >= start):
106 free_start = lastend_pri 245 free_start = lastend_pri
107 free_end = tmppart.get_start() - 1 246 free_end = tmppart.get_start() - 1
108 break 247 break
109 if tmppart.is_extended() and start < tmppart.get_end(): 248 if tmppart.is_extended() and start < tmppart.get_end():
110 lastend_log = tmppart.get_start() 249 lastend_log = tmppart.get_start()
111 for part_log in parts: 250 for part_log in parts:
112 if part_log < 5: continue 251 if part_log < 5: continue
113 tmppart_log = self._partitions[part_log] 252 tmppart_log = self._partitions[part_log]
114 if (tmppart_log.get_start() > lastend_log) and (lastend_log >= start): 253 if (tmppart_log.get_start() > (lastend_log + GAP_SIZE)) and (lastend_log >= start):
115 free_start = lastend_log 254 free_start = lastend_log
116 free_end = tmppart_log.get_start() - 1 255 free_end = tmppart_log.get_start() - 1
117 break 256 break
118 lastend_log = tmppart_log.get_end() + 1 257 lastend_log = tmppart_log.get_end() + 1
119 if free_start == -1 and lastend_log < tmppart.get_end(): 258 if free_start == -1 and lastend_log < tmppart.get_end():
120 free_start = lastend_log 259 free_start = lastend_log
121 free_end = tmppart.get_end() 260 free_end = tmppart.get_end()
122 break 261 break
123 lastend_pri = tmppart.get_end() + 1 262 lastend_pri = tmppart.get_end() + 1
124 if free_start == -1 and lastend_pri < self.get_num_cylinders(): 263 if free_start == -1 and lastend_pri < self._total_sectors:
125 free_start = lastend_pri 264 free_start = lastend_pri
126 free_end = self.get_num_cylinders() 265 free_end = self._total_sectors
127 return (free_start, free_end) 266 return (free_start, free_end)
128 267
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
129 def get_partition_at(self, cylinder, ignore_extended=1): 272 def get_partition_at(self, sector, ignore_extended=1):
130 parts = self._partitions.keys() 273 parts = self._partitions.keys()
131 parts.sort() 274 parts.sort()
132 for part in parts: 275 for part in parts:
133 tmppart = self._partitions[part] 276 tmppart = self._partitions[part]
134 if ignore_extended and tmppart.is_extended(): continue 277 if ignore_extended and tmppart.is_extended(): continue
135 if (cylinder >= tmppart.get_start()) and (cylinder <= tmppart.get_end()): 278 if (sector >= tmppart.get_start()) and (sector <= tmppart.get_end()):
136 return part 279 return part
137 return 0 280 return 0
138 281
282 ##
283 # Returns free minor (no longer used)
284 # @param start Parameter description
285 # @param end Parameter description
139 def get_free_minor_at(self, start, end): 286 def get_free_minor_at(self, start, end):
140 parts = self._partitions.keys() 287 parts = self._partitions.keys()
141 parts.sort() 288 parts.sort()
142 minor = 1 289 minor = 1
143 lastpart = 0 290 lastpart = 0
163 break 310 break
164 minor = part + 1 311 minor = part + 1
165 lastpart = part 312 lastpart = part
166 return minor 313 return minor
167 314
315 ##
316 # Returns an ordered list (disk order) of partition minors
168 def get_ordered_partition_list(self): 317 def get_ordered_partition_list(self):
169 parts = self._partitions.keys() 318 parts = self._partitions.keys()
170 parts.sort() 319 parts.sort()
171 partlist = [] 320 partlist = []
172 free_start, free_end = self.get_free_space(0)
173 tmppart = None
174 tmppart_log = None 321 tmppart = None
175 for part in parts: 322 for part in parts:
176 if part > 4: break 323 if archinfo[self._arch]['extended'] and part > 4.1: break
177 tmppart = self._partitions[part] 324 tmppart = self._partitions[part]
178 if free_end < tmppart.get_start() and not free_start == -1:
179 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
180 free_start, free_end = self.get_free_space(free_end)
181 newitem = self._device + str(part) + ": " + str(tmppart.get_start()) + "-" + str(tmppart.get_end())
182 if tmppart.is_extended(): newitem = newitem + " extended"
183 partlist.append(newitem) 325 partlist.append(part)
184 if tmppart.is_extended(): 326 if tmppart.is_extended():
185 for part_log in parts: 327 for part_log in parts:
186 if part_log < 5: continue 328 if part_log < 4.9: continue
187 tmppart_log = self._partitions[part_log]
188 if free_end < tmppart_log.get_start() and free_end <= tmppart.get_end() and not free_start == -1:
189 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
190 free_start, free_end = self.get_free_space(free_end)
191 newitem = self._device + str(part_log) + ": " + str(tmppart_log.get_start()) + "-" + str(tmppart_log.get_end()) + " logical"
192 partlist.append(newitem) 329 partlist.append(part_log)
193 if ((tmppart_log == None) or (free_start > tmppart_log.get_end())) and free_start < tmppart.get_end():
194 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ") logical")
195 free_start, free_end = self.get_free_space(free_end)
196 if (tmppart == None) or (free_start > tmppart.get_end()):
197 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
198 return partlist 330 return partlist
199 331
332 ##
333 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables()
200 def get_install_profile_structure(self): 334 def get_install_profile_structure(self):
201 devdic = {} 335 devdic = {}
202 for part in self._partitions: 336 for part in self._partitions:
203 tmppart = self._partitions[part] 337 tmppart = self._partitions[part]
204 devdic[part] = { 'mb': 0, '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() }
205 return devdic 339 return devdic
206 340
341 ##
342 # Returns the minor of the extended partition, if any
343 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 return 0
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
207 def get_num_sectors(self): 362 def get_num_sectors(self):
208 return int(self._total_sectors) 363 return int(self._total_sectors)
209 364
365 ##
366 # Returns the size of a cylinder in bytes
210 def get_cylinder_size(self): 367 def get_cylinder_size(self):
211 return int(self._cylinder_bytes) 368 return int(self._cylinder_bytes)
212 369
370 ##
371 # Returns the size of a sector in bytes
372 def get_sector_size(self):
373 return int(self._sector_bytes)
374
375 ##
376 # Returns the number of cylinders
213 def get_num_cylinders(self): 377 def get_num_cylinders(self):
214 return int(self._geometry['cylinders']) 378 return int(self._geometry['cylinders'])
215 379
380 ##
381 # Returns the total number of bytes on the device
216 def get_drive_bytes(self): 382 def get_drive_bytes(self):
217 return int(self._total_bytes) 383 return int(self._total_bytes)
218 384
385 ##
386 # Returns the total number of MB on the device
387 def get_total_mb(self):
388 return self._total_mb
389
390 ##
391 # Returns partition info dictionary
219 def get_partitions(self): 392 def get_partitions(self):
220 return self._partitions 393 return self._partitions
221 394
222 def print_partitions(self): 395 ##
223 for part in self._partitions.keys(): 396 # Prints disk geometry to STDOUT (no longer used)
224 print self._partitions[part].return_info()
225
226 def print_geometry(self): 397 def print_geometry(self):
227 print self._total_bytes, self._geometry 398 print self._total_bytes, self._geometry
228 399
229 def _error(self, message): 400 ##
230 "Raises an exception" 401 # Utility function for running a command and returning it's output as a list
231 raise "DeviceObjectError", message 402 # @param cmd Command to run
232
233 def _run(self, cmd): 403 def _run(self, cmd):
234 "Runs a command and returns the output" 404 "Runs a command and returns the output"
235 405
236 # Run command 406 # Run command
237 output_string = commands.getoutput(cmd) 407 output_string = commands.getoutput(cmd)
251 output_string = output_string[index:] 421 output_string = output_string[index:]
252 422
253 # return output 423 # return output
254 return output_list 424 return output_list
255 425
256 426##
427# This class represents a partition within a GLIStorageDevice object
257class Partition: 428class Partition:
258 "Class representing a single partition within a Device object" 429 "Class representing a single partition within a Device object"
259 430
260 _device = None 431 _device = None
261 _minor = None 432 _minor = 0
262 _bootflag = None 433 _orig_minor = 0
263 _start = None 434 _start = 0
264 _end = None 435 _end = 0
265 _blocks = None
266 _type = None 436 _type = None
267 _mountpoint = None 437 _mountpoint = None
268 _mountopts = None 438 _mountopts = None
269 _format = None 439 _format = None
270 _resizeable = None 440 _resizeable = None
271 _min_cylinders_for_resize = 0 441 _min_mb_for_resize = 0
442 _mb = 0
272 443
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
273 def __init__(self, device, minor, bootflag, start, end, blocks, 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):
274 self._device = device 457 self._device = device
275 self._minor = int(minor) 458 self._minor = float(minor)
276 self._bootflag = bootflag
277 self._start = int(start) 459 self._start = int(start)
278 self._end = int(end) 460 self._end = int(end)
279 self._blocks = int(blocks) 461 self._type = type or "unknown"
280 self._type = type
281 self._mountpoint = mountpoint 462 self._mountpoint = mountpoint
282 self._mountopts = mountopts 463 self._mountopts = mountopts
283 self._format = format 464 self._format = format
284 if blocks == 0: 465 self._mb = mb
285 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512 466 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)
286 if existing: 472 if existing:
287 parted_part = device._parted_disk.get_partition(minor) 473 parted_part = device._parted_disk.get_partition(self._orig_minor)
474 label_type = device._parted_disk.type.name
475 if label_type == "loop":
476 dev_node = device._device
477 else:
478 dev_node = device._device + str(self._orig_minor)
479 print "dev_node = " + dev_node
288 if type == "ntfs": 480 if type == "ntfs":
289 ntfsresize_output = commands.getoutput("ntfsresize --info " + device._device + str(minor)) 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 .\+//'"))
482 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
290 self._resizeable == True 483 self._resizeable = True
291# elsif type == "ext2" or type == "ext3": 484 elif type == "ext2" or type == "ext3":
292# self._min_cylinders_for_resize = -1 485 block_size = int(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")))
293# self._resizeable == True 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\+//'")))
294# elsif type == "": 487 free_bytes = int(block_size * free_blocks)
295# self._min_cylinders_for_resize = self._start + 1 488 # can't hurt to pad (the +50) it a bit since this is really just a guess
489 self._min_mb_for_resize = self._mb - int(free_bytes / MEGABYTE) + 50
296# self._resizeable = True 490 self._resizeable = True
297# elsif type == "fat16" or type == "fat32": 491 else:
298# parted_part = self._device._parted_disk.get_partition(self._minor) 492 parted_part = self._device._parted_disk.get_partition(int(self._orig_minor))
493 try:
299# parted_fs = parted_part.geom.file_system_open() 494 parted_fs = parted_part.geom.file_system_open()
495 except:
496 self._resizeable = False
497 return
300# resize_constraint = parted_fs.get_resize_constraint() 498 resize_constraint = parted_fs.get_resize_constraint()
301# min_size = float(resize_constraint.min_size / self._device._sectors_in_cylinder) 499 min_bytes = resize_constraint.min_size * self._device._sector_bytes
302# if int(min_size) != min_size: min_size = int(min_size) + 1 500 self._min_mb_for_resize = int(min_bytes / MEGABYTE) + 1
303# self._min_cylinders_for_resize = min_size
304 else:
305 self._resizeable = True 501 self._resizeable = True
306 502
503 ##
504 # Returns whether or not the partition is extended
307 def is_extended(self): 505 def is_extended(self):
308 if self._type == "extended": 506 if self._type == "extended":
309 return True 507 return True
310 else: 508 else:
311 return False 509 return False
312 510
511 ##
512 # Returns whether or not the partition is logical
313 def is_logical(self): 513 def is_logical(self):
314 part = self._device.get_partition_at(self._start, ignore_extended=0) 514 if self._type == "free":
315 if part and self._device._partitions[part].is_extended() and not part == self._minor: 515 if int(self._minor) + 0.9 == self._minor:
516 return True
517 else:
518 return False
519 elif archinfo[self._device._arch]['extended'] and self._minor > 4:
316 return True 520 return True
521 else:
317 return False 522 return False
318 523
524 ##
525 # Returns a list of logical partitions if this is an extended partition
319 def get_logicals(self): 526 def get_logicals(self):
527 if not self.is_extended():
528 return None
320 logicals = [] 529 logicals = []
321 start = self._start
322 while not start > self._end:
323 part = self._device.get_partition_at(start) 530 parts = self._device._partitions.keys()
324 if not part: break 531 parts.sort()
532 for part in parts:
533 if part < 5: continue
325 logicals.append(part) 534 logicals.append(part)
326 start = self._device._partitions[part].get_end() + 1
327 logicals.sort() 535 logicals.sort()
328 return logicals 536 return logicals
329 537
538 ##
539 # Returns the extened parent partition if this is a logical partition (no longer used)
330 def get_extended_parent(self): 540 def get_extended_parent(self):
541 if not self.is_logical():
542 return None
543 else:
331 return self._device.get_partition_at(self._start, ignore_extended=0) 544 return self._device.get_partition_at(self._start, ignore_extended=0)
332 545
546 ##
547 # Sets the start sector for the partition
548 # @param start Start sector
333 def set_start(self, start): 549 def set_start(self, start):
334 self._start = int(start) 550 self._start = int(start)
335 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
336 551
552 ##
553 # Returns the start sector for the partition
337 def get_start(self): 554 def get_start(self):
338 return int(self._start) 555 return int(self._start)
339 556
557 ##
558 # Sets the end sector of the partition
559 # @param end End sector
340 def set_end(self, end): 560 def set_end(self, end):
341 self._end = int(end) 561 self._end = int(end)
342 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
343 562
563 ##
564 # Returns end sector for the partition
344 def get_end(self): 565 def get_end(self):
345 return int(self._end) 566 return int(self._end)
346 567
568 ##
569 # Returns size of partition in MB
570 def get_mb(self):
571 return int(self._mb)
572
573 ##
574 # Sets size of partition in MB
575 # @param mb Parameter description
576 def set_mb(self, mb):
577 self._mb = int(mb)
578
579 ##
580 # Sets type of partition
581 # @param type Parameter description
347 def set_type(self, type): 582 def set_type(self, type):
348 self._type = type 583 self._type = type
349 584
585 ##
586 # Returns type of partition
350 def get_type(self): 587 def get_type(self):
351 return self._type 588 return self._type
352 589
590 ##
591 # Returns parent GLIStorageDevice object
353 def get_device(self): 592 def get_device(self):
354 return self._device 593 return self._device
355 594
595 ##
596 # Sets minor of partition
597 # @param minor New minor
356 def set_minor(self, minor): 598 def set_minor(self, minor):
357 self._minor = int(minor) 599 self._minor = float(minor)
358 600
601 ##
602 # Returns minor of partition
359 def get_minor(self): 603 def get_minor(self):
360 return int(self._minor) 604 return float(self._minor)
361 605
606 ##
607 # Sets the original minor of the partition
608 # @param orig_minor Parameter description
609 def set_orig_minor(self, orig_minor):
610 self._orig_minor = int(orig_minor)
611
612 ##
613 # Returns the original minor of the partition
614 def get_orig_minor(self):
615 return self._orig_minor
616
617 ##
618 # Sets the mountpoint for the partition
619 # @param mountpoint Mountpoint
362 def set_mountpoint(self, mountpoint): 620 def set_mountpoint(self, mountpoint):
363 self._mountpoint = mountpoint 621 self._mountpoint = mountpoint
364 622
623 ##
624 # Returns the mountpoint for the partition
365 def get_mountpoint(self): 625 def get_mountpoint(self):
366 return self._mountpoint 626 return self._mountpoint
367 627
628 ##
629 # Sets the mount options for the partition
630 # @param mountopts Mount options
368 def set_mountopts(self, mountopts): 631 def set_mountopts(self, mountopts):
369 self._mountopts = mountopts 632 self._mountopts = mountopts
370 633
634 ##
635 # Returns the mount options for the partition
371 def get_mountopts(self): 636 def get_mountopts(self):
372 return self._mountopts 637 return self._mountopts
373 638
639 ##
640 # Set whether to format the partition
641 # @param format Format this partition (True/False)
374 def set_format(self, format): 642 def set_format(self, format):
375 self._format = format 643 self._format = format
376 644
645 ##
646 # Returns whether to format the partition
377 def get_format(self): 647 def get_format(self):
378 return self._format 648 return self._format
379 649
380 def get_blocks(self): 650 ##
381 return int(self._blocks) 651 # Returns whether the partition is resizeable
652 def is_resizeable(self):
653 return self._resizeable
382 654
655 ##
656 # Returns minimum MB for resize
383 def get_min_cylinders_for_resize(self): 657 def get_min_mb_for_resize(self):
384# min_size = self._start + 1
385# if not self._format:
386# parted_part = self._device._parted_disk.get_partition(self._minor)
387# parted_fs = parted_part.geom.file_system_open()
388# resize_constraint = parted_fs.get_resize_constraint()
389# min_size = float(resize_constraint.min_size / self._device._sectors_in_cylinder)
390# if int(min_size) != min_size: min_size = int(min_size) + 1
391# min_size = min_size + self._start
392#################################################
393 if self.is_extended(): 658# if self.is_extended():
394 min_size = self._start 659# min_size = self._start
395 for part in self._device._partitions: 660# for part in self._device._partitions:
396 if part < 5: continue 661# if part < 5: continue
397 min_size = part.get_end() 662# if part.get_end > min_size: min_size = part.get_end()
663# return min_size
664# else:
665 if self._resizeable:
666 return self._min_mb_for_resize
398 else: 667 else:
399 return self._min_cylinders_for_resize 668 return -1
400 669
670 ##
671 # Returns maximum MB for resize
401 def get_max_cylinders_for_resize(self): 672 def get_max_mb_for_resize(self):
402 free_start, free_end = self._device.get_free_space(self._end) 673 if self._resizeable:
403 if free_end == -1: return self._end 674 free_minor = 0
404 if free_start - 1 == self._end:
405 if self.is_logical(): 675 if self.is_logical():
406 if free_end <= self._device._partitions[self.get_extended_parent()]._end: 676 free_minor = self._minor + 0.9
407 return free_end
408 else:
409 return self._end
410 else: 677 else:
411 return free_end 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
412 685
686 ##
687 # Resizes the partition
688 # @param mb New size in MB
413 def resize(self, start, end): 689 def resize(self, mb):
414 part_at_start = self._device.get_partition_at(int(start)) 690 free_minor = self._minor
415 part_at_end = self._device.get_partition_at(int(end))
416 logicals = None
417 if self.is_logical(): 691 if self.is_logical():
418 parent = self.get_extended_parent() 692 free_minor += 0.9
419 parentstart = int(self._device._partitions[parent].get_start()) 693 else:
420 parentend = int(self._device._partitions[parent].get_end()) 694 free_minor += 0.1
421 if (start < parentstart) or (end > parentend): return 0 695 if mb < self._mb:
422 if self.is_extended(): 696 # Shrinking
423 logicals = self.get_logicals() 697 if not free_minor in self._device._partitions:
424 if len(logicals): 698 self._device._partitions[free_minor] = Partition(self._device, free_minor, 0, 0, 0, "free", format=False, existing=False)
425 logicals_start = self._device._partitions[logicals[0]].get_start() 699 self._device._partitions[free_minor]._mb += self._mb - mb
426 logicals_end = self._device._partitions[logicals[len(logicals)-1]].get_end() 700 self._mb = mb
427 if (start > logicals_start) or (end < logicals_end): return 0 701 elif mb == self._mb + self._device._partitions[free_minor]._mb:
428 if part_at_start in logicals: part_at_start = 0 702 # Using all available unallocated space
429 if part_at_end in logicals: part_at_end = 0 703 del self._device._partitions[free_minor]
430 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
431 return 0 705 elif mb > self._mb:
432 self.set_start(start) 706 # Growing
433 self.set_end(end) 707 self._device._partitions[free_minor]._mb = mb - self._mb
434 return 1 708 self._mb = mb
435 709
436 def _error(self, message): 710##
437 "Raises an exception" 711# Returns a list of detected partitionable devices
438 raise "PartitionObjectError", message
439
440
441def detect_devices(): 712def detect_devices():
442 "Returns a list of partitionable devices on the system"
443
444 devices = [] 713 devices = []
445 714
446 # Make sure sysfs exists 715 # Make sure sysfs exists
447 if not os.path.exists("/sys/bus"): 716 if not os.path.exists("/sys/bus"):
448 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)")
449 # Make sure /proc/partitions exists 718 # Make sure /proc/partitions exists
450 if not os.path.exists("/proc/partitions"): 719 if not os.path.exists("/proc/partitions"):
451 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!")
452 721
453 # Load /proc/partitions into the variable 'partitions' 722 # Load /proc/partitions into the variable 'partitions'
454 partitions = [] 723 partitions = []
455 for line in open("/proc/partitions"): 724 for line in open("/proc/partitions"):
456 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():
457 not line.split()[1].isdigit():
458 continue 726 continue
459 727
460 # Get the major, minor and device name 728 # Get the major, minor and device name
461 major = line.split()[0] 729 major = line.split()[0]
462 minor = line.split()[1] 730 minor = line.split()[1]
472 # all the devices in /dev to try and find a 740 # all the devices in /dev to try and find a
473 # devices with the same major and minor 741 # devices with the same major and minor
474 if not os.path.exists(device): 742 if not os.path.exists(device):
475 device = None 743 device = None
476 for path, dirs, files in os.walk("/dev"): 744 for path, dirs, files in os.walk("/dev"):
477 for file in files: 745 for d_file in files:
478 full_file = os.path.join(path, file) 746 full_file = os.path.join(path, d_file)
479 if not os.path.exists(full_file): 747 if not os.path.exists(full_file):
480 continue 748 continue
481 statres = os.stat(full_file) 749 statres = os.stat(full_file)
482 fmaj = os.major(statres.st_rdev) 750 fmaj = os.major(statres.st_rdev)
483 fmin = os.minor(statres.st_rdev) 751 fmin = os.minor(statres.st_rdev)
495 if os.path.exists("/sys/bus/" + dev_type): 763 if os.path.exists("/sys/bus/" + dev_type):
496 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices") 764 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices")
497 765
498 # For each device in the devices on that bus 766 # For each device in the devices on that bus
499 for sysfs_device in sysfs_devices: 767 for sysfs_device in sysfs_devices:
500 dev_file = "/sys/bus/" + dev_type + "/devices/"\ 768 dev_file = "/sys/bus/" + dev_type + "/devices/" + sysfs_device + "/block/dev"
501 + sysfs_device + "/block/dev"
502 769
503 # If the file is not a block device, loop 770 # If the file is not a block device, loop
504 if not os.path.exists(dev_file): 771 if not os.path.exists(dev_file):
505 continue 772 continue
506 773
508 try: 775 try:
509 major, minor = open(dev_file).read().split(":") 776 major, minor = open(dev_file).read().split(":")
510 major = int(major) 777 major = int(major)
511 minor = int(minor) 778 minor = int(minor)
512 except: 779 except:
513 raise Exception, "invalid major minor in "\ 780 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "invalid major minor in " + dev_file)
514 + dev_file
515 781
516 # Find a device listed in /proc/partitions 782 # Find a device listed in /proc/partitions
517 # that has the same minor and major as our 783 # that has the same minor and major as our
518 # current block device. 784 # current block device.
519 for record in partitions: 785 for record in partitions:
520 if major == record[0] and minor == record[1]: 786 if major == record[0] and minor == record[1]:
521 devices.append(record[2]) 787 devices.append(record[2])
522 788
789 # For testing the partitioning code
790 if GLIUtility.is_file("/tmp/disk.img"):
791 devices.append("/tmp/disk.img")
792
523 # We have assembled the list of devices, so return it 793 # We have assembled the list of devices, so return it
524 return devices 794 return devices

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