/[gli]/trunk/src/GLIStorageDevice.py
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1# Copyright 1999-2005 Gentoo Foundation
2# This source code is distributed under the terms of version 2 of the GNU
3# General Public License as published by the Free Software Foundation, a copy
4# of which can be found in the main directory of this project.
5
1import commands, string, re, os, parted 6import commands, string, os, parted
7from GLIException import *
8import GLIUtility
2 9
10MEGABYTE = 1024 * 1024
11
12# these are here so that we can change them easily in future
13# the values were chosen to represent perfect floating point representations
14FREE_MINOR_FRAC_PRI = 1.0/32.0
15FREE_MINOR_FRAC_LOG = 1.0/8.0
16
17archinfo = { 'sparc': { 'fixedparts': [ { 'minor': 3, 'type': "wholedisk" } ], 'disklabel': 'sun', 'extended': False },
18 'hppa': { 'fixedparts': [ { 'minor': 1, 'type': "palo" } ], 'disklabel': 'msdos', 'extended': True },
19 'x86': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
20 'amd64': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
21 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False }
22 }
23
24##
25# This class provides a partitioning abstraction for the frontends
3class Device: 26class Device:
4 "Class representing a partitionable device." 27 "Class representing a partitionable device."
5 28
6 _device = None 29 _device = None
7 _partitions = None 30 _partitions = None
11 _cylinder_bytes = 0 34 _cylinder_bytes = 0
12 _sectors_in_cylinder = 0 35 _sectors_in_cylinder = 0
13 _parted_dev = None 36 _parted_dev = None
14 _parted_disk = None 37 _parted_disk = None
15 _sector_bytes = 0 38 _sector_bytes = 0
16 39 _total_mb = 0
17 def __init__(self, device): 40 _arch = None
41 _disklabel = None
42
43 ##
44 # Initialization function for GLIStorageDevice class
45 # @param device Device node (e.g. /dev/hda) of device being represented
46 # @param arch="x86" Architecture that we're partition for (defaults to 'x86' for now)
47 def __init__(self, device, arch="x86", set_geometry=True, virtual=False, local_device=True):
18 self._device = device 48 self._device = device
19 self._partitions = {} 49 self._partitions = {}
20 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512} 50 self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512}
21 self._total_bytes = 0 51 self._total_bytes = 0
22 self._cylinder_bytes = 0 52 self._cylinder_bytes = 0
53 self._arch = arch
54 self._local_device = local_device
55 if self._local_device:
23 self._parted_dev = parted.PedDevice.get(self._device) 56 self._parted_dev = parted.PedDevice.get(self._device)
57 try:
24 self._parted_disk = parted.PedDisk.new(self._parted_dev) 58 self._parted_disk = parted.PedDisk.new(self._parted_dev)
59 except:
60 self._parted_disk = self._parted_dev.disk_new_fresh(parted.disk_type_get(archinfo[self._arch]['disklabel']))
61 self._disklabel = self._parted_disk.type.name
62 if set_geometry:
25 self.set_disk_geometry_from_disk() 63 self.set_disk_geometry_from_disk()
26 64
65 ##
66 # Sets disk geometry info from disk. This function is used internally by __init__()
27 def set_disk_geometry_from_disk(self): 67 def set_disk_geometry_from_disk(self):
28 self._total_bytes = self._parted_dev.length * self._parted_dev.sector_size 68 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 69 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders
39
40 self._sector_bytes = self._parted_dev.sector_size 70 self._sector_bytes = self._parted_dev.sector_size
41 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes 71 self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes
42# self._total_sectors = self._geometry['cylinders'] * self._geometry['heads'] * self._geometry['sectors']
43 self._total_sectors = self._parted_dev.length 72 self._total_sectors = self._parted_dev.length
44 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors'] 73 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors']
74 self._total_mb = long(self._total_bytes / MEGABYTE)
45 75
76 ##
77 # Sets partition info from disk.
46 def set_partitions_from_disk(self): 78 def set_partitions_from_disk(self):
79 last_part = 0
80 last_log_part = 4
47 parted_part = self._parted_disk.next_partition() 81 parted_part = self._parted_disk.next_partition()
48 while parted_part != None: 82 while parted_part:
83 part_mb = long((parted_part.geom.end - parted_part.geom.start + 1) * self._sector_bytes / MEGABYTE)
49 if parted_part.num < 1: 84 if parted_part.num >= 1:
50 parted_part = self._parted_disk.next_partition(parted_part)
51 continue
52 fs_type = "" 85 fs_type = ""
53 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name 86 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
54 if parted_part.type == 2: fs_type = "extended" 87 if parted_part.type == 2: fs_type = "extended"
88 if archinfo[self._arch]['extended'] and parted_part.num > 4:
89 last_log_part = parted_part.num
90 else:
91 last_part = parted_part.num
55 self._partitions[int(parted_part.num)] = Partition(self, parted_part.num, '', parted_part.geom.start, parted_part.geom.end, (parted_part.geom.end - parted_part.geom.start), fs_type, format=False, existing=True) 92 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)
93 elif parted_part.type_name == "free":
94# parent_part = self.get_partition_at(parted_part.geom.start, ignore_extended=0)
95# if parent_part:
96 if self.get_extended_partition() and parted_part.geom.start >= self._partitions[self.get_extended_partition()].get_start() and parted_part.geom.end <= self._partitions[self.get_extended_partition()].get_end():
97 self._partitions[last_log_part+FREE_MINOR_FRAC_LOG] = Partition(self, last_log_part+FREE_MINOR_FRAC_LOG, part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
98 last_log_part += 1
99 else:
100 self._partitions[last_part+FREE_MINOR_FRAC_PRI] = Partition(self, last_part+FREE_MINOR_FRAC_PRI, part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
101 last_part += 1
56 parted_part = self._parted_disk.next_partition(parted_part) 102 parted_part = self._parted_disk.next_partition(parted_part)
57 103
104 ##
105 # Imports partition info from the install profile partition structure
106 # @param ips Parameter structure returned from install_profile.get_partition_tables()
58 def set_partitions_from_install_profile_structure(self, ips): 107 def set_partitions_from_install_profile_structure(self, ips):
59 for part in ips: 108 for part in ips:
60 tmppart = ips[part] 109 tmppart = ips[part]
61 existing = False 110 existing = False
62 parted_part = self._parted_disk.get_partition(part) 111 if tmppart['origminor'] and not tmppart['format']:
63 if parted_part != None:
64 start = parted_part.geom.start / self._sectors_in_cylinder
65 end = parted_part.geom.end / self._sectors_in_cylinder
66 fs_type = ""
67 if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
68 if parted_part.type == 2: fs_type = "extended"
69 if int(tmppart['start']) == int(start) and int(tmppart['end']) == int(end) and tmppart['type'] == fs_type and tmppart['format'] == False:
70 existing = True 112 existing = True
71 self._partitions[int(part)] = Partition(self, part, '', tmppart['start'], tmppart['end'], 0, tmppart['type'], mountopts=tmppart['mountopts'], mountpoint=tmppart['mountpoint'], format=tmppart['format'], existing=(not tmppart['format'])) 113 self._partitions[tmppart['minor']] = Partition(self, tmppart['minor'], tmppart['mb'], tmppart['start'], tmppart['end'], tmppart['type'], format=tmppart['format'], origminor=tmppart['origminor'], existing=existing, mountpoint=tmppart['mountpoint'], mountopts=tmppart['mountopts'], mkfsopts=tmppart['mkfsopts'])
72 114
115 ##
116 # Returns name of device (e.g. /dev/hda) being represented
73 def get_device(self): 117 def get_device(self):
74 return self._device 118 return self._device
75 119
120 ##
121 # Uses magic to apply the recommended partition layout
122 def do_recommended(self):
123 free_minor = 0
124 recommended_parts = [ { 'type': "ext2", 'size': 100, 'mountpoint': "/boot" },
125 { 'type': "linux-swap", 'size': 512, 'mountpoint': "" },
126 { 'type': "ext3", 'size': "*", 'mountpoint': "/" } ]
127 to_create = []
128 physical_memory = int(GLIUtility.spawn(r"free -m | egrep '^Mem:' | sed -e 's/^Mem: \+//' -e 's/ \+.\+$//'", return_output=True)[1].strip())
129 parts = self.get_ordered_partition_list()
130 for part in parts:
131 if self._partitions[part].get_type() == "free" and self._partitions[part].get_mb() >= 4096:
132 free_minor = part
133 break
134 if not free_minor:
135 raise GLIException("RecommendedPartitionLayoutError", "notice", "do_recommended", "You do not have atleast 4GB of concurrent unallocated space. Please remove some partitions and try again.")
136 remaining_free = self._partitions[free_minor].get_mb()
137 for newpart in recommended_parts:
138 if archinfo[self._arch]['extended'] and free_minor == (3 + FREE_MINOR_FRAC_PRI) and not newpart == recommended_parts[-1]:
139 if self.get_extended_partition():
140 raise GLIException("RecommendedPartitionLayoutError", "notice", "do_recommended", "This code is not yet robust enough to handle automatic partitioning with your current layout.")
141 to_create.append({ 'type': "extended", 'size': remaining_free, 'mountpoint': "", 'free_minor': free_minor })
142 free_minor = 4 + FREE_MINOR_FRAC_LOG
143 newpart['free_minor'] = free_minor
144 if newpart['type'] == "linux-swap" and physical_memory and physical_memory < 1024:
145 newpart['size'] = physical_memory * 2
146 to_create.append(newpart)
147 free_minor = free_minor + 1
148 if not newpart['size'] == "*":
149 remaining_free = remaining_free - newpart['size']
150 for newpart in to_create:
151 if newpart['size'] == "*":
152 newpart['size'] = self._partitions[newpart['free_minor']].get_mb()
153 self.add_partition(newpart['free_minor'], newpart['size'], 0, 0, newpart['type'], mountpoint=newpart['mountpoint'])
154
155 ##
156 # Combines free space and closes gaps in minor numbers. This is used internally
76 def clear_partitions(self): 157 def tidy_partitions(self):
77 self._partitions = {} 158 last_minor = 0
159 last_log_minor = 4
160 last_free = 0
161 last_log_free = 0
162 parts = self._partitions.keys()
163 parts.sort()
164 for part in parts:
165 if archinfo[self._arch]['extended'] and part > 4: break
166 tmppart = self._partitions[part]
167 if tmppart.get_type() == "extended":
168 for part_log in parts:
169 if part_log < (4 + FREE_MINOR_FRAC_LOG): continue
170 tmppart_log = self._partitions[part_log]
171 if tmppart_log.get_type() == "free":
172 if last_log_minor < last_log_free:
173 self._partitions[last_log_free].set_mb(self._partitions[last_log_free].get_mb()+tmppart_log.get_mb())
174 del self._partitions[part_log]
175 else:
176 if not last_log_free:
177 last_log_free = last_log_minor + FREE_MINOR_FRAC_LOG
178 else:
179 last_log_free = part_log
180 tmppart_log.set_minor(last_log_free)
181 self._partitions[last_log_free] = tmppart_log
182 if part_log != last_log_free: del self._partitions[part_log]
183 else:
184 if part_log > (last_log_minor + 1):
185 tmppart_log.set_minor(last_log_minor + 1)
186 last_log_minor = last_log_minor + 1
187 self._partitions[last_log_minor] = tmppart_log
188 del self._partitions[part_log]
189 else:
190 last_log_minor = part_log
191 elif tmppart.get_type() == "free":
192 if last_minor < last_free:
193 self._partitions[last_free].set_mb(self._partitions[last_free].get_mb()+tmppart.get_mb())
194 del self._partitions[part]
195 else:
196 if not last_free:
197 last_free = last_minor + FREE_MINOR_FRAC_PRI
198 else:
199 last_free = part
200 tmppart.set_minor(last_free)
201 self._partitions[last_free] = tmppart
202 if part != last_free: del self._partitions[part]
203 else:
204 if part > (last_minor + 1):
205 tmppart.set_minor(last_minor + 1)
206 last_minor = last_minor + 1
207 self._partitions[last_minor] = tmppart
208 del self._partitions[part]
209 else:
210 last_minor = part
78 211
212 ##
213 # Adds a new partition to the partition info
214 # @param free_minor minor of unallocated space partition is being created in
215 # @param mb size of partition in MB
216 # @param start Start sector (only used for existing partitions)
217 # @param end End sector (only used for existing partitions)
218 # @param type Partition type (ext2, ext3, fat32, linux-swap, free, extended, etc.)
219 # @param mountpoint='' Partition mountpoint
220 # @param mountopts='' Partition mount options
221 # @param mkfsopts='' Additional mkfs options
79 def add_partition(self, minor, start, end, type, mountpoint='', mountopts=''): 222 def add_partition(self, free_minor, mb, start, end, type, mountpoint='', mountopts='',mkfsopts=''):
80 free_start, free_end = self.get_free_space(start) 223 if free_minor == -1:
224 tmpparts = self._partitions.keys()
225 tmpparts.sort()
226 tmpminor = tmpparts[-1]
227 if archinfo[self._arch]['extended'] and tmpminor >= 5:
228 free_minor = new_minor + FREE_MINOR_FRAC_LOG
229 else:
230 free_minor = new_minor + FREE_MINOR_FRAC_PRI
231 self._partitions[free_minor] = Partition(self, free_minor, mb, 0, 0, "free")
81 minor = int(minor) 232 new_minor = int(free_minor) + 1
82 if not free_end:
83 return False
84 if self._partitions.has_key(minor): 233 if self._partitions.has_key(new_minor):
85 parts = self._partitions.keys() 234 parts = self._partitions.keys()
86 parts.sort() 235 parts.sort()
87 parts.reverse() 236 parts.reverse()
88 hole_at = 0 237 hole_at = 0
89 for i in range(1, parts[0]+1): 238 for i in range(1, parts[0]+1):
90 if i <= minor: continue 239 if i <= new_minor: continue
91 if not self._partitions.has_key(int(i)): 240 if not self._partitions.has_key(i):
92 hole_at = i 241 hole_at = i
93 break 242 break
94 stopscooting = 0 243 stopscooting = 0
95 for i in parts: 244 for i in parts:
96 if stopscooting: break 245 if stopscooting: break
97 if (i >= hole_at) and (hole_at): continue 246 if i >= hole_at and hole_at: continue
98 if i >= minor: 247 if i >= new_minor:
99 self._partitions[i].set_minor(i+1) 248 self._partitions[i].set_minor(i+1)
100 self._partitions[i+1] = self._partitions[i] 249 self._partitions[i+1] = self._partitions[i]
101 if i == minor: stopscooting = 1 250 if i == new_minor: stopscooting = 1
251 if mb != self._partitions[free_minor].get_mb():
252 old_free_mb = self._partitions[free_minor].get_mb()
253 del self._partitions[free_minor]
254 if archinfo[self._arch]['extended'] and new_minor >= 5:
255 free_minor = new_minor + FREE_MINOR_FRAC_LOG
256 else:
257 free_minor = new_minor + FREE_MINOR_FRAC_PRI
258 self._partitions[free_minor] = Partition(self, free_minor, old_free_mb-mb, 0, 0, "free")
259 else:
260 del self._partitions[free_minor]
102 self._partitions[minor] = Partition(self, minor, '', start, end, 0, type, mountpoint=mountpoint, mountopts=mountopts) 261 self._partitions[new_minor] = Partition(self, new_minor, mb, start, end, type, mountpoint=mountpoint, mountopts=mountopts,mkfsopts=mkfsopts)
262 if type == "extended":
263 self._partitions[4 + FREE_MINOR_FRAC_LOG] = Partition(self, (4 + FREE_MINOR_FRAC_LOG), mb, 0, 0, "free")
264 self.tidy_partitions()
103 265
266 ##
267 # Removes partition from partition info
268 # @param minor Minor of partition to remove
104 def remove_partition(self, minor): 269 def remove_partition(self, minor):
270 tmppart = self._partitions[int(minor)]
271 free_minor = 0
272 if tmppart.is_logical():
273 free_minor = int(minor-1)+FREE_MINOR_FRAC_LOG
274 else:
275 free_minor = int(minor-1)+FREE_MINOR_FRAC_PRI
276 if free_minor in self._partitions:
277 self._partitions[free_minor].set_mb(self._partitions[free_minor].get_mb() + tmppart.get_mb())
278 else:
279 self._partitions[free_minor] = Partition(self, free_minor, tmppart.get_mb(), 0, 0, "free", format=False, existing=False)
105 del self._partitions[int(minor)] 280 del self._partitions[int(minor)]
281 self.tidy_partitions()
106 282
107 def get_free_space(self, start): 283 ##
108 GAP_SIZE = 100 284 # This function clears the partition table
285 def clear_partitions(self):
286# parts = self._partitions.keys()
287# parts.sort()
288# parts.reverse()
289# for part in parts:
290# if not self._partitions[part].get_type() == "free":
291# self.remove_partition(part)
292 self._partitions = { (0 + FREE_MINOR_FRAC_PRI): Partition(self, (0 + FREE_MINOR_FRAC_PRI), self.get_total_mb(), 0, 0, "free", format=False, existing=False) }
293
294 ##
295 # Returns an ordered list (disk order) of partition minors
296 def get_ordered_partition_list(self):
109 parts = self._partitions.keys() 297 parts = self._partitions.keys()
110 parts.sort() 298 parts.sort()
111 lastend_pri = 0 299 partlist = []
112 lastend_log = 0 300 tmppart = None
113 free_start = -1
114 free_end = -1
115 if start > self._total_sectors: return (-1, -1)
116 for part in parts: 301 for part in parts:
117 if part > 4: break 302 if archinfo[self._arch]['extended'] and part > (4 + FREE_MINOR_FRAC_PRI): break
118 tmppart = self._partitions[part] 303 tmppart = self._partitions[part]
119 if (tmppart.get_start() > (lastend_pri + GAP_SIZE)) and (lastend_pri >= start):
120 free_start = lastend_pri
121 free_end = tmppart.get_start() - 1
122 break
123 if tmppart.is_extended() and start < tmppart.get_end():
124 lastend_log = tmppart.get_start()
125 for part_log in parts:
126 if part_log < 5: continue
127 tmppart_log = self._partitions[part_log]
128 if (tmppart_log.get_start() > (lastend_log + GAP_SIZE)) and (lastend_log >= start):
129 free_start = lastend_log
130 free_end = tmppart_log.get_start() - 1
131 break
132 lastend_log = tmppart_log.get_end() + 1
133 if free_start == -1 and lastend_log < tmppart.get_end():
134 free_start = lastend_log
135 free_end = tmppart.get_end()
136 break
137 lastend_pri = tmppart.get_end() + 1
138 if free_start == -1 and lastend_pri < self._total_sectors:
139 free_start = lastend_pri
140 free_end = self._total_sectors
141 return (free_start, free_end)
142
143 def get_partition_at(self, sector, ignore_extended=1):
144 parts = self._partitions.keys()
145 parts.sort()
146 for part in parts:
147 tmppart = self._partitions[part]
148 if ignore_extended and tmppart.is_extended(): continue
149 if (sector >= tmppart.get_start()) and (sector <= tmppart.get_end()):
150 return part
151 return 0
152
153 def get_free_minor_at(self, start, end):
154 parts = self._partitions.keys()
155 parts.sort()
156 minor = 1
157 lastpart = 0
158 for part in parts:
159 if part > 4: break
160 tmppart = self._partitions[part]
161 if end < tmppart.get_start():
162 minor = part
163 if (minor - 1) > lastpart: minor = lastpart + 1
164 break
165 if tmppart.is_extended() and start < tmppart.get_end():
166 minor = 5
167 lastpart = 4
168 for part_log in parts:
169 if part_log < 5: continue
170 tmppart_log = self._partitions[part_log]
171 if end < tmppart_log.get_start():
172 minor = part_log
173 if (minor - 1) > lastpart: minor = lastpart + 1
174 break
175 minor = part_log + 1
176 lastpart = part_log
177 break
178 minor = part + 1
179 lastpart = part
180 return minor
181
182 def get_ordered_partition_list(self):
183 parts = self._partitions.keys()
184 parts.sort()
185 partlist = []
186 free_start, free_end = self.get_free_space(0)
187 tmppart = None
188 tmppart_log = None
189 for part in parts:
190 if part > 4: break
191 tmppart = self._partitions[part]
192 if free_end < tmppart.get_start() and not free_start == -1:
193 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
194 free_start, free_end = self.get_free_space(free_end)
195 newitem = self._device + str(part) + ": " + str(tmppart.get_start()) + "-" + str(tmppart.get_end())
196 if tmppart.is_extended(): newitem = newitem + " extended"
197 partlist.append(newitem) 304 partlist.append(part)
198 if tmppart.is_extended(): 305 if tmppart.is_extended():
199 for part_log in parts: 306 for part_log in parts:
200 if part_log < 5: continue 307 if part_log < (4 + FREE_MINOR_FRAC_LOG): continue
201 tmppart_log = self._partitions[part_log]
202 if free_end < tmppart_log.get_start() and free_end <= tmppart.get_end() and not free_start == -1:
203 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
204 free_start, free_end = self.get_free_space(free_end)
205 newitem = self._device + str(part_log) + ": " + str(tmppart_log.get_start()) + "-" + str(tmppart_log.get_end()) + " logical"
206 partlist.append(newitem) 308 partlist.append(part_log)
207 if ((tmppart_log == None) or (free_start > tmppart_log.get_end())) and free_start < tmppart.get_end():
208 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ") logical")
209 free_start, free_end = self.get_free_space(free_end)
210 if (tmppart == None) or (free_start > tmppart.get_end()):
211 partlist.append("Free Space (" + str(free_start) + "-" + str(free_end) + ")")
212 return partlist 309 return partlist
213 310
311 ##
312 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables()
214 def get_install_profile_structure(self): 313 def get_install_profile_structure(self):
215 devdic = {} 314 devdic = {}
216 for part in self._partitions: 315 for part in self._partitions:
217 tmppart = self._partitions[part] 316 tmppart = self._partitions[part]
218 devdic[part] = { 'mb': 0, 'minor': int(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() } 317 devdic[part] = { 'mb': tmppart.get_mb(), 'minor': float(part), 'origminor': tmppart.get_orig_minor(), 'type': tmppart.get_type(), 'mountpoint': tmppart.get_mountpoint(), 'mountopts': tmppart.get_mountopts(), 'format': tmppart.get_format(), 'mkfsopts': tmppart.get_mkfsopts(), 'start': 0, 'end': 0 }
219 return devdic 318 return devdic
220 319
320 ##
321 # Returns the minor of the extended partition, if any
221 def get_extended_partition(self): 322 def get_extended_partition(self):
222 for part in self._partitions: 323 for part in self._partitions:
223 tmppart = self._partitions[part] 324 tmppart = self._partitions[part]
224 if tmppart.is_extended(): 325 if tmppart.is_extended():
225 return part 326 return part
226 return 0 327 return 0
227 328
329 ##
330 # Returns the drive model
331 def get_model(self):
332 return self._parted_dev.model
333
334 ##
335 # Sets the disklabel type
336 def set_disklabel(self, disklabel):
337 self._disklabel = disklabel
338
339 ##
340 # Returns the disklabel type
341 def get_disklabel(self):
342 return self._disklabel
343
344 ##
345 # Returns the number of sectors on the device
228 def get_num_sectors(self): 346 def get_num_sectors(self):
229 return int(self._total_sectors) 347 return long(self._total_sectors)
230 348
349 ##
350 # Returns the size of a cylinder in bytes
231 def get_cylinder_size(self): 351 def get_cylinder_size(self):
232 return int(self._cylinder_bytes) 352 return long(self._cylinder_bytes)
233 353
354 ##
355 # Returns the size of a sector in bytes
234 def get_sector_size(self): 356 def get_sector_size(self):
235 return int(self._sector_bytes) 357 return long(self._sector_bytes)
236 358
359 ##
360 # Returns the number of cylinders
237 def get_num_cylinders(self): 361 def get_num_cylinders(self):
238 return int(self._geometry['cylinders']) 362 return long(self._geometry['cylinders'])
239 363
364 ##
365 # Returns the total number of bytes on the device
240 def get_drive_bytes(self): 366 def get_drive_bytes(self):
241 return int(self._total_bytes) 367 return long(self._total_bytes)
242 368
369 ##
370 # Returns the total number of MB on the device
371 def get_total_mb(self):
372 if self._local_device:
373 return self._total_mb
374 else:
375 total_mb = 0
376 for tmppart in self._partitions:
377 total += tmppart.get_mb()
378 return total_mb
379
380 ##
381 # Returns partition info dictionary
243 def get_partitions(self): 382 def get_partitions(self):
244 return self._partitions 383 return self._partitions
245 384
246 def print_partitions(self): 385 ##
247 for part in self._partitions.keys(): 386 # Prints disk geometry to STDOUT (no longer used)
248 print self._partitions[part].return_info()
249
250 def print_geometry(self): 387 def print_geometry(self):
251 print self._total_bytes, self._geometry 388 print self._total_bytes, self._geometry
252 389
253 def _error(self, message): 390##
254 "Raises an exception" 391# This class represents a partition within a GLIStorageDevice object
255 raise "DeviceObjectError", message
256
257 def _run(self, cmd):
258 "Runs a command and returns the output"
259
260 # Run command
261 output_string = commands.getoutput(cmd)
262
263 # What we will return
264 output_list = []
265
266 # As long as there is a new line in the output_string
267 while output_string.find("\n") != -1:
268
269 # Find the \n in the string
270 index = output_string.find("\n") + 1
271
272 # Add the line to the output and remove it from
273 # the output_string
274 output_list.append(output_string[:index])
275 output_string = output_string[index:]
276
277 # return output
278 return output_list
279
280
281class Partition: 392class Partition:
282 "Class representing a single partition within a Device object" 393 "Class representing a single partition within a Device object"
283 394
284 _device = None 395 _device = None
285 _minor = None 396 _minor = 0
286 _orig_minor = "" 397 _orig_minor = 0
287 _bootflag = None
288 _start = None 398 _start = 0
289 _end = None 399 _end = 0
290 _blocks = None
291 _type = None 400 _type = None
292 _mountpoint = None 401 _mountpoint = None
293 _mountopts = None 402 _mountopts = None
294 _format = None 403 _format = None
295 _resizeable = None 404 _resizeable = None
296 _min_sectors_for_resize = 0 405 _min_mb_for_resize = 0
406 _mb = 0
407 _mkfsopts = None
297 408
409 ##
410 # Initialization function for the Partition class
411 # @param device Parent GLIStorageDevice object
412 # @param minor Minor of partition
413 # @param mb Parameter Size of partition in MB
414 # @param start Parameter Start sector of partition
415 # @param end Parameter Start sector of partition
416 # @param type Parameter Type of partition (ext2, ext3, fat32, linux-swap, free, extended, etc.)
417 # @param mountpoint='' Mountpoint of partition
418 # @param mountopts='' Mount options of partition
419 # @param mkfsopts='' Additional mkfs options
420 # @param format=True Format partition
421 # @param existing=False This partition exists on disk
298 def __init__(self, device, minor, bootflag, start, end, blocks, type, mountpoint='', mountopts='', format=True, existing=False): 422 def __init__(self, device, minor, mb, start, end, type, mountpoint='', mountopts='', format=True, existing=False, origminor=0, mkfsopts=''):
299 self._device = device 423 self._device = device
300 self._minor = int(minor) 424 self._minor = float(minor)
301 if existing: self._orig_minor = int(minor)
302 self._bootflag = bootflag
303 self._start = int(start) 425 self._start = long(start)
304 self._end = int(end) 426 self._end = long(end)
305 self._blocks = int(blocks)
306 if type == "": type = "unknown" 427 self._type = type or "unknown"
307 self._type = type
308 self._mountpoint = mountpoint 428 self._mountpoint = mountpoint
309 self._mountopts = mountopts 429 self._mountopts = mountopts
310 self._format = format 430 self._format = format
311 if blocks == 0: 431 self._mb = mb
312 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512 432 self._orig_minor = origminor
433 self._mkfsopts = mkfsopts
434 if type != "free":
435 if existing and not origminor:
436 self._orig_minor = self._minor
437 self._minor = int(self._minor)
438 self._orig_minor = int(self._orig_minor)
313 if existing: 439 if existing:
440 try:
314 parted_part = device._parted_disk.get_partition(minor) 441 parted_part = device._parted_disk.get_partition(self._orig_minor)
442 label_type = device._parted_disk.type.name
443 if label_type == "loop":
444 dev_node = device._device
445 else:
446 dev_node = device._device + str(self._orig_minor)
447# print "dev_node = " + dev_node
315 if type == "ntfs": 448 if type == "ntfs":
316 min_bytes = int(commands.getoutput("ntfsresize -f --info " + device._device + str(minor) + " | grep -e '^You might resize' | sed -e 's/You might resize at //' -e 's/ bytes or .\+//'")) 449 min_bytes = long(commands.getoutput("ntfsresize -f --info " + dev_node + " | grep -e '^You might resize' | sed -e 's/You might resize at //' -e 's/ bytes or .\+//'"))
317 self._min_cylinders_for_resize = int(min_bytes / self._device._cylinder_bytes) + 1 450 self._min_mb_for_resize = long(min_bytes / MEGABYTE) + 1
318 self._resizeable == True 451 self._resizeable = True
319 elif type == "ext2" or type == "ext3": 452 elif type == "ext2" or type == "ext3":
320 block_size = string.strip(commands.getoutput("dumpe2fs -h " + device._device + str(minor) + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")) 453 block_size = long(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")))
321 free_blocks = string.strip(commands.getoutput("dumpe2fs -h " + device._device + str(minor) + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'")) 454 free_blocks = long(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'")))
322 free_sec = int(int(block_size) * int(free_blocks) / self._device._sector_bytes) 455 free_bytes = long(block_size * free_blocks)
323 free_sec = free_sec - 2000 # just to be safe 456 # can't hurt to pad (the +50) it a bit since this is really just a guess
324 self._min_sectors_for_resize = (self._end - self._start + 1) - free_sec 457 self._min_mb_for_resize = self._mb - long(free_bytes / MEGABYTE) + 50
325 self._resizeable == True 458 self._resizeable = True
326 else: 459 else:
327 parted_part = self._device._parted_disk.get_partition(self._minor) 460 parted_part = self._device._parted_disk.get_partition(int(self._orig_minor))
328 try:
329 parted_fs = parted_part.geom.file_system_open() 461 parted_fs = parted_part.geom.file_system_open()
330 except:
331 self._resizeable = False
332 return
333 resize_constraint = parted_fs.get_resize_constraint() 462 resize_constraint = parted_fs.get_resize_constraint()
334 min_size = resize_constraint.min_size 463 min_bytes = resize_constraint.min_size * self._device._sector_bytes
335 if int(min_size) != min_size: min_size = int(min_size) + 1 464 self._min_mb_for_resize = long(min_bytes / MEGABYTE) + 1
336 self._min_sectors_for_resize = min_size
337 self._resizeable = True 465 self._resizeable = True
466 except:
467 self._resizeable = False
338 468
469 ##
470 # Returns whether or not the partition is extended
339 def is_extended(self): 471 def is_extended(self):
340 if self._type == "extended": 472 if self._type == "extended":
341 return True 473 return True
342 else: 474 else:
343 return False 475 return False
344 476
477 ##
478 # Returns whether or not the partition is logical
345 def is_logical(self): 479 def is_logical(self):
346 part = self._device.get_partition_at(self._start, ignore_extended=0) 480 if self._type == "free":
347 if part and self._device._partitions[part].is_extended() and not part == self._minor: 481 if int(self._minor) + FREE_MINOR_FRAC_LOG == self._minor:
482 return True
483 else:
484 return False
485 elif archinfo[self._device._arch]['extended'] and self._minor > 4:
348 return True 486 return True
487 else:
349 return False 488 return False
350 489
490 ##
491 # Returns a list of logical partitions if this is an extended partition
351 def get_logicals(self): 492 def get_logicals(self):
352 if not self.is_extended(): 493 if not self.is_extended():
353 return None 494 return None
354 logicals = [] 495 logicals = []
355 start = self._start
356 parts = self._device._partitions.keys() 496 parts = self._device._partitions.keys()
357 parts.sort() 497 parts.sort()
358 for part in parts: 498 for part in parts:
359 if part < 5: continue 499 if part < 5: continue
360 logicals.append(part) 500 logicals.append(part)
361 logicals.sort() 501 logicals.sort()
362 return logicals 502 return logicals
363 503
504 ##
505 # Returns the extened parent partition if this is a logical partition (no longer used)
364 def get_extended_parent(self): 506 def get_extended_parent(self):
365 if not self.is_logical(): 507 if not self.is_logical():
366 return None 508 return None
367 else: 509 else:
368 return self._device.get_partition_at(self._start, ignore_extended=0) 510 return self._device.get_partition_at(self._start, ignore_extended=0)
369 511
512 ##
513 # Sets the options passed to mkfs
514 # @param mkfsopts Options passed to mkfs
515 def set_mkfsopts(self, mkfsopts):
516 self._mkfsopts = mkfsopts
517
518 ##
519 # Returns the options passes to mkfs
520 def get_mkfsopts(self):
521 return self._mkfsopts
522
523 ##
524 # Sets the start sector for the partition
525 # @param start Start sector
370 def set_start(self, start): 526 def set_start(self, start):
371 self._start = int(start) 527 self._start = long(start)
372 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
373 528
529 ##
530 # Returns the start sector for the partition
374 def get_start(self): 531 def get_start(self):
375 return int(self._start) 532 return long(self._start)
376 533
534 ##
535 # Sets the end sector of the partition
536 # @param end End sector
377 def set_end(self, end): 537 def set_end(self, end):
378 self._end = int(end) 538 self._end = long(end)
379 self._blocks = ((self._end - self._start) * self._device.get_cylinder_size()) / 512
380 539
540 ##
541 # Returns end sector for the partition
381 def get_end(self): 542 def get_end(self):
382 return int(self._end) 543 return long(self._end)
383 544
545 ##
546 # Returns size of partition in MB
547 def get_mb(self):
548 return long(self._mb)
549
550 ##
551 # Sets size of partition in MB
552 # @param mb Parameter description
553 def set_mb(self, mb):
554 self._mb = long(mb)
555
556 ##
557 # Sets type of partition
558 # @param type Parameter description
384 def set_type(self, type): 559 def set_type(self, type):
385 self._type = type 560 self._type = type
386 561
562 ##
563 # Returns type of partition
387 def get_type(self): 564 def get_type(self):
388 return self._type 565 return self._type
389 566
567 ##
568 # Returns parent GLIStorageDevice object
390 def get_device(self): 569 def get_device(self):
391 return self._device 570 return self._device
392 571
572 ##
573 # Sets minor of partition
574 # @param minor New minor
393 def set_minor(self, minor): 575 def set_minor(self, minor):
394 self._minor = int(minor) 576 self._minor = float(minor)
395 577
578 ##
579 # Returns minor of partition
396 def get_minor(self): 580 def get_minor(self):
397 return int(self._minor) 581 return float(self._minor)
398 582
583 ##
584 # Sets the original minor of the partition
585 # @param orig_minor Parameter description
399 def set_orig_minor(self, orig_minor): 586 def set_orig_minor(self, orig_minor):
400 self._orig_minor = int(orig_minor) 587 self._orig_minor = int(orig_minor)
401 588
589 ##
590 # Returns the original minor of the partition
402 def get_orig_minor(self): 591 def get_orig_minor(self):
403 return self._orig_minor 592 return self._orig_minor
404 593
594 ##
595 # Sets the mountpoint for the partition
596 # @param mountpoint Mountpoint
405 def set_mountpoint(self, mountpoint): 597 def set_mountpoint(self, mountpoint):
406 self._mountpoint = mountpoint 598 self._mountpoint = mountpoint
407 599
600 ##
601 # Returns the mountpoint for the partition
408 def get_mountpoint(self): 602 def get_mountpoint(self):
409 return self._mountpoint 603 return self._mountpoint
410 604
605 ##
606 # Sets the mount options for the partition
607 # @param mountopts Mount options
411 def set_mountopts(self, mountopts): 608 def set_mountopts(self, mountopts):
412 self._mountopts = mountopts 609 self._mountopts = mountopts
413 610
611 ##
612 # Returns the mount options for the partition
414 def get_mountopts(self): 613 def get_mountopts(self):
415 return self._mountopts 614 return self._mountopts
416 615
616 ##
617 # Set whether to format the partition
618 # @param format Format this partition (True/False)
417 def set_format(self, format): 619 def set_format(self, format):
418 self._format = format 620 self._format = format
419 621
622 ##
623 # Returns whether to format the partition
420 def get_format(self): 624 def get_format(self):
421 return self._format 625 return self._format
422 626
423 def get_blocks(self): 627 ##
424 return int(self._blocks) 628 # Returns whether the partition is resizeable
629 def is_resizeable(self):
630 return self._resizeable
425 631
632 ##
633 # Returns minimum MB for resize
426 def get_min_sectors_for_resize(self): 634 def get_min_mb_for_resize(self):
427 if self.is_extended(): 635# if self.is_extended():
428 min_size = self._start 636# min_size = self._start
429 for part in self._device._partitions: 637# for part in self._device._partitions:
430 if part < 5: continue 638# if part < 5: continue
431 if part.get_end > min_size: min_size = part.get_end() 639# if part.get_end > min_size: min_size = part.get_end()
432 return min_size 640# return min_size
433 else: 641# else:
642 if self._resizeable:
434 return self._min_sectors_for_resize 643 return self._min_mb_for_resize
644 else:
645 return -1
435 646
647 ##
648 # Returns maximum MB for resize
436 def get_max_sectors_for_resize(self): 649 def get_max_mb_for_resize(self):
437 free_start, free_end = self._device.get_free_space(self._end) 650 if self._resizeable:
438 if free_end == -1: return self._end 651 free_minor = 0
439 if free_start - 1 == self._end:
440 if self.is_logical(): 652 if self.is_logical():
441 if free_end <= self._device._partitions[self.get_extended_parent()]._end: 653 free_minor = self._minor + FREE_MINOR_FRAC_LOG
442 return free_end - self._start
443 else:
444 return self._end - self._start
445 else: 654 else:
446 return free_end - self._start 655 free_minor = self._minor + FREE_MINOR_FRAC_PRI
656 if free_minor in self._device._partitions:
657 return self._mb + self._device._partitions[free_minor]._mb
658 else:
659 return self._mb
660 else:
661 return -1
447 662
663 ##
664 # Resizes the partition
665 # @param mb New size in MB
448 def resize(self, start, end): 666 def resize(self, mb):
449 part_at_start = self._device.get_partition_at(int(start)) 667 free_minor = self._minor
450 part_at_end = self._device.get_partition_at(int(end))
451 logicals = None
452 if self.is_logical(): 668 if self.is_logical():
453 parent = self.get_extended_parent() 669 free_minor += FREE_MINOR_FRAC_LOG
454 parentstart = int(self._device._partitions[parent].get_start()) 670 else:
455 parentend = int(self._device._partitions[parent].get_end()) 671 free_minor += FREE_MINOR_FRAC_PRI
456 if (start < parentstart) or (end > parentend): return 0 672 if mb < self._mb:
457 if self.is_extended(): 673 # Shrinking
458 logicals = self.get_logicals() 674 if not free_minor in self._device._partitions:
459 if len(logicals): 675 self._device._partitions[free_minor] = Partition(self._device, free_minor, 0, 0, 0, "free", format=False, existing=False)
460 logicals_start = self._device._partitions[logicals[0]].get_start() 676 self._device._partitions[free_minor]._mb += self._mb - mb
461 logicals_end = self._device._partitions[logicals[len(logicals)-1]].get_end() 677 self._mb = mb
462 if (start > logicals_start) or (end < logicals_end): return 0 678 elif mb == self._mb + self._device._partitions[free_minor]._mb:
463 if part_at_start in logicals: part_at_start = 0 679 # Using all available unallocated space
464 if part_at_end in logicals: part_at_end = 0 680 del self._device._partitions[free_minor]
465 if ((not part_at_start == 0) and (part_at_start != self._minor)) or ((not part_at_end == 0) and (part_at_end != self._minor)): 681 self._mb = mb
466 return 0 682 elif mb > self._mb:
467 self.set_start(start) 683 # Growing
468 self.set_end(end) 684 self._device._partitions[free_minor]._mb = mb - self._mb
469 return 1 685 self._mb = mb
470 686
471 def _error(self, message): 687##
472 "Raises an exception" 688# Returns a list of detected partitionable devices
473 raise "PartitionObjectError", message
474
475
476def detect_devices(): 689def detect_devices():
477 "Returns a list of partitionable devices on the system"
478
479 devices = [] 690 devices = []
480 691
481 # Make sure sysfs exists 692 # Make sure sysfs exists
693 # TODO: rewrite for 2.4 support
482 if not os.path.exists("/sys/bus"): 694 if not os.path.exists("/sys/bus"):
483 raise Exception, "no sysfs found (you MUST use a kernel >2.6)" 695 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "no sysfs found (you MUST use a kernel >2.6)")
484 # Make sure /proc/partitions exists 696 # Make sure /proc/partitions exists
485 if not os.path.exists("/proc/partitions"): 697 if not os.path.exists("/proc/partitions"):
486 raise Exception, "/proc/partitions does not exist!" 698 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "/proc/partitions does not exist! Please make sure procfs is in your kernel and mounted!")
487 699
488 # Load /proc/partitions into the variable 'partitions' 700 # Load /proc/partitions into the variable 'partitions'
489 partitions = [] 701 partitions = []
490 for line in open("/proc/partitions"): 702 for line in open("/proc/partitions"):
491 if len(line.split()) < 4 or not line.split()[0].isdigit() or \ 703 if len(line.split()) < 4 or not line.split()[0].isdigit() or not line.split()[1].isdigit():
492 not line.split()[1].isdigit():
493 continue 704 continue
494 705
495 # Get the major, minor and device name 706 # Get the major, minor and device name
496 major = line.split()[0] 707 major = line.split()[0]
497 minor = line.split()[1] 708 minor = line.split()[1]
507 # all the devices in /dev to try and find a 718 # all the devices in /dev to try and find a
508 # devices with the same major and minor 719 # devices with the same major and minor
509 if not os.path.exists(device): 720 if not os.path.exists(device):
510 device = None 721 device = None
511 for path, dirs, files in os.walk("/dev"): 722 for path, dirs, files in os.walk("/dev"):
512 for file in files: 723 for d_file in files:
513 full_file = os.path.join(path, file) 724 full_file = os.path.join(path, d_file)
514 if not os.path.exists(full_file): 725 if not os.path.exists(full_file):
515 continue 726 continue
516 statres = os.stat(full_file) 727 statres = os.stat(full_file)
517 fmaj = os.major(statres.st_rdev) 728 fmaj = os.major(statres.st_rdev)
518 fmin = os.minor(statres.st_rdev) 729 fmin = os.minor(statres.st_rdev)
524 735
525 partitions.append(( major, minor, device )) 736 partitions.append(( major, minor, device ))
526 737
527 # Scan sysfs for the devices of type 'x' 738 # Scan sysfs for the devices of type 'x'
528 # 'x' being a member of the list below: 739 # 'x' being a member of the list below:
740 # TODO: rewrite for 2.4 support
529 for dev_type in [ "ide", "scsi" ]: # Other device types? usb? fw? 741 for dev_type in [ "ide", "scsi" ]: # Other device types? usb? fw?
530 if os.path.exists("/sys/bus/" + dev_type): 742 if os.path.exists("/sys/bus/" + dev_type):
531 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices") 743 sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices")
532 744
533 # For each device in the devices on that bus 745 # For each device in the devices on that bus
534 for sysfs_device in sysfs_devices: 746 for sysfs_device in sysfs_devices:
535 dev_file = "/sys/bus/" + dev_type + "/devices/"\ 747 dev_file = "/sys/bus/" + dev_type + "/devices/" + sysfs_device + "/block/dev"
536 + sysfs_device + "/block/dev"
537 748
538 # If the file is not a block device, loop 749 # If the file is not a block device, loop
539 if not os.path.exists(dev_file): 750 if not os.path.exists(dev_file):
540 continue 751 continue
541 752
543 try: 754 try:
544 major, minor = open(dev_file).read().split(":") 755 major, minor = open(dev_file).read().split(":")
545 major = int(major) 756 major = int(major)
546 minor = int(minor) 757 minor = int(minor)
547 except: 758 except:
548 raise Exception, "invalid major minor in "\ 759 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "invalid major minor in " + dev_file)
549 + dev_file
550 760
551 # Find a device listed in /proc/partitions 761 # Find a device listed in /proc/partitions
552 # that has the same minor and major as our 762 # that has the same minor and major as our
553 # current block device. 763 # current block device.
554 for record in partitions: 764 for record in partitions:
555 if major == record[0] and minor == record[1]: 765 if major == record[0] and minor == record[1]:
556 devices.append(record[2]) 766 devices.append(record[2])
557 767
768 # For testing the partitioning code
769 if GLIUtility.is_file("/tmp/disk.img"):
770 devices.append("/tmp/disk.img")
771
558 # We have assembled the list of devices, so return it 772 # We have assembled the list of devices, so return it
559 return devices 773 return devices

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