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authorRichard Purdie <richard.purdie@linuxfoundation.org>2025-11-07 13:31:53 +0000
committerRichard Purdie <richard.purdie@linuxfoundation.org>2025-11-07 13:31:53 +0000
commit8c22ff0d8b70d9b12f0487ef696a7e915b9e3173 (patch)
treeefdc32587159d0050a69009bdf2330a531727d95 /scripts/lib/wic/partition.py
parentd412d2747595c1cc4a5e3ca975e3adc31b2f7891 (diff)
downloadpoky-8c22ff0d8b70d9b12f0487ef696a7e915b9e3173.tar.gz
The poky repository master branch is no longer being updated.
You can either: a) switch to individual clones of bitbake, openembedded-core, meta-yocto and yocto-docs b) use the new bitbake-setup You can find information about either approach in our documentation: https://docs.yoctoproject.org/ Note that "poky" the distro setting is still available in meta-yocto as before and we continue to use and maintain that. Long live Poky! Some further information on the background of this change can be found in: https://lists.openembedded.org/g/openembedded-architecture/message/2179 Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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diff --git a/scripts/lib/wic/partition.py b/scripts/lib/wic/partition.py
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1#
2# Copyright (c) 2013-2016 Intel Corporation.
3#
4# SPDX-License-Identifier: GPL-2.0-only
5#
6# DESCRIPTION
7# This module provides the OpenEmbedded partition object definitions.
8#
9# AUTHORS
10# Tom Zanussi <tom.zanussi (at] linux.intel.com>
11# Ed Bartosh <ed.bartosh> (at] linux.intel.com>
12
13import logging
14import os
15import uuid
16
17from wic import WicError
18from wic.misc import exec_cmd, exec_native_cmd, get_bitbake_var
19from wic.pluginbase import PluginMgr
20
21logger = logging.getLogger('wic')
22
23class Partition():
24
25 def __init__(self, args, lineno):
26 self.args = args
27 self.active = args.active
28 self.align = args.align
29 self.disk = args.disk
30 self.device = None
31 self.extra_filesystem_space = args.extra_filesystem_space
32 self.extra_partition_space = args.extra_partition_space
33 self.exclude_path = args.exclude_path
34 self.include_path = args.include_path
35 self.change_directory = args.change_directory
36 self.fsopts = args.fsopts
37 self.fspassno = args.fspassno
38 self.fstype = args.fstype
39 self.label = args.label
40 self.use_label = args.use_label
41 self.mkfs_extraopts = args.mkfs_extraopts
42 self.mountpoint = args.mountpoint
43 self.no_table = args.no_table
44 self.num = None
45 self.offset = args.offset
46 self.overhead_factor = args.overhead_factor
47 self.part_name = args.part_name
48 self.part_type = args.part_type
49 self.rootfs_dir = args.rootfs_dir
50 self.size = args.size
51 self.fixed_size = args.fixed_size
52 self.source = args.source
53 self.sourceparams = args.sourceparams
54 self.system_id = args.system_id
55 self.use_uuid = args.use_uuid
56 self.uuid = args.uuid
57 self.fsuuid = args.fsuuid
58 self.type = args.type
59 self.no_fstab_update = args.no_fstab_update
60 self.updated_fstab_path = None
61 self.has_fstab = False
62 self.update_fstab_in_rootfs = False
63 self.hidden = args.hidden
64 self.mbr = args.mbr
65
66 self.lineno = lineno
67 self.source_file = ""
68
69 def get_extra_block_count(self, current_blocks):
70 """
71 The --size param is reflected in self.size (in kB), and we already
72 have current_blocks (1k) blocks, calculate and return the
73 number of (1k) blocks we need to add to get to --size, 0 if
74 we're already there or beyond.
75 """
76 logger.debug("Requested partition size for %s: %d",
77 self.mountpoint, self.size)
78
79 if not self.size:
80 return 0
81
82 requested_blocks = self.size
83
84 logger.debug("Requested blocks %d, current_blocks %d",
85 requested_blocks, current_blocks)
86
87 if requested_blocks > current_blocks:
88 return requested_blocks - current_blocks
89 else:
90 return 0
91
92 def get_rootfs_size(self, actual_rootfs_size=0):
93 """
94 Calculate the required size of rootfs taking into consideration
95 --size/--fixed-size and --extra-partition-space flags as well as overhead
96 and extra space, as specified in kickstart file. Raises an error
97 if the `actual_rootfs_size` is larger than fixed-size rootfs.
98 """
99 if self.fixed_size:
100 rootfs_size = self.fixed_size - self.extra_partition_space
101 if actual_rootfs_size > rootfs_size:
102 raise WicError("Actual rootfs size (%d kB) is larger than "
103 "allowed size %d kB" %
104 (actual_rootfs_size, rootfs_size))
105 else:
106 extra_blocks = self.get_extra_block_count(actual_rootfs_size)
107 if extra_blocks < self.extra_filesystem_space:
108 extra_blocks = self.extra_filesystem_space
109
110 rootfs_size = actual_rootfs_size + extra_blocks
111 rootfs_size = int(rootfs_size * self.overhead_factor)
112
113 logger.debug("Added %d extra blocks to %s to get to %d total blocks",
114 extra_blocks, self.mountpoint, rootfs_size)
115
116 return rootfs_size
117
118 @property
119 def disk_size(self):
120 """
121 Obtain on-disk size of partition taking into consideration
122 --size/--fixed-size and --extra-partition-space options.
123
124 """
125 return self.fixed_size if self.fixed_size else self.size + self.extra_partition_space
126
127 @property
128 def fs_size(self):
129 """
130 Obtain on-disk size of filesystem inside the partition taking into
131 consideration --size/--fixed-size and --extra-partition-space options.
132 """
133 return self.fixed_size - self.extra_partition_space if self.fixed_size else self.size
134
135 def prepare(self, creator, cr_workdir, oe_builddir, rootfs_dir,
136 bootimg_dir, kernel_dir, native_sysroot, updated_fstab_path):
137 """
138 Prepare content for individual partitions, depending on
139 partition command parameters.
140 """
141 self.updated_fstab_path = updated_fstab_path
142 if self.updated_fstab_path and not (self.fstype.startswith("ext") or self.fstype == "msdos"):
143 self.update_fstab_in_rootfs = True
144
145 if not self.source:
146 if self.fstype == "none" or self.no_table:
147 return
148 if not self.size and not self.fixed_size:
149 raise WicError("The %s partition has a size of zero. Please "
150 "specify a non-zero --size/--fixed-size for that "
151 "partition." % self.mountpoint)
152
153 if self.fstype == "swap":
154 self.prepare_swap_partition(cr_workdir, oe_builddir,
155 native_sysroot)
156 self.source_file = "%s/fs.%s" % (cr_workdir, self.fstype)
157 else:
158 if self.fstype in ('squashfs', 'erofs'):
159 raise WicError("It's not possible to create empty %s "
160 "partition '%s'" % (self.fstype, self.mountpoint))
161
162 rootfs = "%s/fs_%s.%s.%s" % (cr_workdir, self.label,
163 self.lineno, self.fstype)
164 if os.path.isfile(rootfs):
165 os.remove(rootfs)
166
167 prefix = "ext" if self.fstype.startswith("ext") else self.fstype
168 method = getattr(self, "prepare_empty_partition_" + prefix)
169 method(rootfs, oe_builddir, native_sysroot)
170 self.source_file = rootfs
171 return
172
173 plugins = PluginMgr.get_plugins('source')
174
175 # Don't support '-' in plugin names
176 self.source = self.source.replace("-", "_")
177
178 if self.source not in plugins:
179 raise WicError("The '%s' --source specified for %s doesn't exist.\n\t"
180 "See 'wic list source-plugins' for a list of available"
181 " --sources.\n\tSee 'wic help plugins' for "
182 "details on adding a new source plugin." %
183 (self.source, self.mountpoint))
184
185 srcparams_dict = {}
186 if self.sourceparams:
187 # Split sourceparams string of the form key1=val1[,key2=val2,...]
188 # into a dict. Also accepts valueless keys i.e. without =
189 splitted = self.sourceparams.split(',')
190 srcparams_dict = dict((par.split('=', 1) + [None])[:2] for par in splitted if par)
191
192 plugin = plugins[self.source]
193 plugin.do_configure_partition(self, srcparams_dict, creator,
194 cr_workdir, oe_builddir, bootimg_dir,
195 kernel_dir, native_sysroot)
196 plugin.do_stage_partition(self, srcparams_dict, creator,
197 cr_workdir, oe_builddir, bootimg_dir,
198 kernel_dir, native_sysroot)
199 plugin.do_prepare_partition(self, srcparams_dict, creator,
200 cr_workdir, oe_builddir, bootimg_dir,
201 kernel_dir, rootfs_dir, native_sysroot)
202 plugin.do_post_partition(self, srcparams_dict, creator,
203 cr_workdir, oe_builddir, bootimg_dir,
204 kernel_dir, rootfs_dir, native_sysroot)
205
206 # further processing required Partition.size to be an integer, make
207 # sure that it is one
208 if not isinstance(self.size, int):
209 raise WicError("Partition %s internal size is not an integer. "
210 "This a bug in source plugin %s and needs to be fixed." %
211 (self.mountpoint, self.source))
212
213 if self.fixed_size and self.size + self.extra_partition_space > self.fixed_size:
214 raise WicError("File system image of partition %s is "
215 "larger (%d kB + %d kB extra part space) than its allowed size %d kB" %
216 (self.mountpoint, self.size, self.extra_partition_space, self.fixed_size))
217
218 def prepare_rootfs(self, cr_workdir, oe_builddir, rootfs_dir,
219 native_sysroot, real_rootfs = True, pseudo_dir = None):
220 """
221 Prepare content for a rootfs partition i.e. create a partition
222 and fill it from a /rootfs dir.
223
224 Currently handles ext2/3/4, btrfs, vfat and squashfs.
225 """
226
227 rootfs = "%s/rootfs_%s.%s.%s" % (cr_workdir, self.label,
228 self.lineno, self.fstype)
229 if os.path.isfile(rootfs):
230 os.remove(rootfs)
231
232 p_prefix = os.environ.get("PSEUDO_PREFIX", "%s/usr" % native_sysroot)
233 if (pseudo_dir):
234 # Canonicalize the ignore paths. This corresponds to
235 # calling oe.path.canonicalize(), which is used in bitbake.conf.
236 include_paths = [rootfs_dir] + (get_bitbake_var("PSEUDO_INCLUDE_PATHS") or "").split(",")
237 canonical_paths = []
238 for path in include_paths:
239 if "$" not in path:
240 trailing_slash = path.endswith("/") and "/" or ""
241 canonical_paths.append(os.path.realpath(path) + trailing_slash)
242 include_paths = ",".join(canonical_paths)
243
244 pseudo = "export PSEUDO_PREFIX=%s;" % p_prefix
245 pseudo += "export PSEUDO_LOCALSTATEDIR=%s;" % pseudo_dir
246 pseudo += "export PSEUDO_PASSWD=%s;" % rootfs_dir
247 pseudo += "export PSEUDO_NOSYMLINKEXP=1;"
248 pseudo += "export PSEUDO_INCLUDE_PATHS=%s;" % include_paths
249 pseudo += "%s " % get_bitbake_var("FAKEROOTCMD")
250 else:
251 pseudo = None
252
253 if not self.size and real_rootfs:
254 # The rootfs size is not set in .ks file so try to get it
255 # from bitbake variable
256 rsize_bb = get_bitbake_var('ROOTFS_SIZE')
257 rdir = get_bitbake_var('IMAGE_ROOTFS')
258 if rsize_bb and (rdir == rootfs_dir or (rootfs_dir.split('/')[-2] == "tmp-wic" and rootfs_dir.split('/')[-1][:6] == "rootfs")):
259 # Bitbake variable ROOTFS_SIZE is calculated in
260 # Image._get_rootfs_size method from meta/lib/oe/image.py
261 # using IMAGE_ROOTFS_SIZE, IMAGE_ROOTFS_ALIGNMENT,
262 # IMAGE_OVERHEAD_FACTOR and IMAGE_ROOTFS_EXTRA_SPACE
263 self.size = int(round(float(rsize_bb)))
264 else:
265 # Bitbake variable ROOTFS_SIZE is not defined so compute it
266 # from the rootfs_dir size using the same logic found in
267 # get_rootfs_size() from meta/classes/image.bbclass
268 du_cmd = "du -ks %s" % rootfs_dir
269 out = exec_cmd(du_cmd)
270 self.size = int(out.split()[0])
271
272 prefix = "ext" if self.fstype.startswith("ext") else self.fstype
273 method = getattr(self, "prepare_rootfs_" + prefix)
274 method(rootfs, cr_workdir, oe_builddir, rootfs_dir, native_sysroot, pseudo)
275 self.source_file = rootfs
276
277 # get the rootfs size in the right units for kickstart (kB)
278 du_cmd = "du -Lbks %s" % rootfs
279 out = exec_cmd(du_cmd)
280 self.size = int(out.split()[0])
281
282 def prepare_rootfs_ext(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
283 native_sysroot, pseudo):
284 """
285 Prepare content for an ext2/3/4 rootfs partition.
286 """
287 du_cmd = "du -ks %s" % rootfs_dir
288 out = exec_cmd(du_cmd)
289 actual_rootfs_size = int(out.split()[0])
290
291 rootfs_size = self.get_rootfs_size(actual_rootfs_size)
292
293 with open(rootfs, 'w') as sparse:
294 os.ftruncate(sparse.fileno(), rootfs_size * 1024)
295
296 extraopts = self.mkfs_extraopts or "-F -i 8192"
297
298 # use hash_seed to generate reproducible ext4 images
299 (extraopts, pseudo) = self.get_hash_seed_ext4(extraopts, pseudo)
300
301 label_str = ""
302 if self.label:
303 label_str = "-L %s" % self.label
304
305 mkfs_cmd = "mkfs.%s %s %s %s -U %s -d %s" % \
306 (self.fstype, extraopts, rootfs, label_str, self.fsuuid, rootfs_dir)
307 exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
308
309 if self.updated_fstab_path and self.has_fstab and not self.no_fstab_update:
310 debugfs_script_path = os.path.join(cr_workdir, "debugfs_script")
311 with open(debugfs_script_path, "w") as f:
312 f.write("cd etc\n")
313 f.write("rm fstab\n")
314 f.write("write %s fstab\n" % (self.updated_fstab_path))
315 debugfs_cmd = "debugfs -w -f %s %s" % (debugfs_script_path, rootfs)
316 exec_native_cmd(debugfs_cmd, native_sysroot)
317
318 mkfs_cmd = "fsck.%s -pvfD %s" % (self.fstype, rootfs)
319 exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
320
321 if os.getenv('SOURCE_DATE_EPOCH'):
322 sde_time = hex(int(os.getenv('SOURCE_DATE_EPOCH')))
323 debugfs_script_path = os.path.join(cr_workdir, "debugfs_script")
324 files = []
325 for root, dirs, others in os.walk(rootfs_dir):
326 base = root.replace(rootfs_dir, "").rstrip(os.sep)
327 files += [ "/" if base == "" else base ]
328 files += [ base + "/" + n for n in dirs + others ]
329 with open(debugfs_script_path, "w") as f:
330 f.write("set_current_time %s\n" % (sde_time))
331 if self.updated_fstab_path and self.has_fstab and not self.no_fstab_update:
332 f.write("set_inode_field /etc/fstab mtime %s\n" % (sde_time))
333 f.write("set_inode_field /etc/fstab mtime_extra 0\n")
334 for file in set(files):
335 for time in ["atime", "ctime", "crtime"]:
336 f.write("set_inode_field \"%s\" %s %s\n" % (file, time, sde_time))
337 f.write("set_inode_field \"%s\" %s_extra 0\n" % (file, time))
338 for time in ["wtime", "mkfs_time", "lastcheck"]:
339 f.write("set_super_value %s %s\n" % (time, sde_time))
340 for time in ["mtime", "first_error_time", "last_error_time"]:
341 f.write("set_super_value %s 0\n" % (time))
342 debugfs_cmd = "debugfs -w -f %s %s" % (debugfs_script_path, rootfs)
343 exec_native_cmd(debugfs_cmd, native_sysroot)
344
345 self.check_for_Y2038_problem(rootfs, native_sysroot)
346
347 def get_hash_seed_ext4(self, extraopts, pseudo):
348 if os.getenv('SOURCE_DATE_EPOCH'):
349 sde_time = int(os.getenv('SOURCE_DATE_EPOCH'))
350 if pseudo:
351 pseudo = "export E2FSPROGS_FAKE_TIME=%s;%s " % (sde_time, pseudo)
352 else:
353 pseudo = "export E2FSPROGS_FAKE_TIME=%s; " % sde_time
354
355 # Set hash_seed to generate deterministic directory indexes
356 namespace = uuid.UUID("e7429877-e7b3-4a68-a5c9-2f2fdf33d460")
357 if self.fsuuid:
358 namespace = uuid.UUID(self.fsuuid)
359 hash_seed = str(uuid.uuid5(namespace, str(sde_time)))
360 extraopts += " -E hash_seed=%s" % hash_seed
361
362 return (extraopts, pseudo)
363
364 def prepare_rootfs_btrfs(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
365 native_sysroot, pseudo):
366 """
367 Prepare content for a btrfs rootfs partition.
368 """
369 du_cmd = "du -ks %s" % rootfs_dir
370 out = exec_cmd(du_cmd)
371 actual_rootfs_size = int(out.split()[0])
372
373 rootfs_size = self.get_rootfs_size(actual_rootfs_size)
374
375 with open(rootfs, 'w') as sparse:
376 os.ftruncate(sparse.fileno(), rootfs_size * 1024)
377
378 label_str = ""
379 if self.label:
380 label_str = "-L %s" % self.label
381
382 mkfs_cmd = "mkfs.%s -b %d -r %s %s %s -U %s %s" % \
383 (self.fstype, rootfs_size * 1024, rootfs_dir, label_str,
384 self.mkfs_extraopts, self.fsuuid, rootfs)
385 exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
386
387 def prepare_rootfs_msdos(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
388 native_sysroot, pseudo):
389 """
390 Prepare content for a msdos/vfat rootfs partition.
391 """
392 du_cmd = "du -bks %s" % rootfs_dir
393 out = exec_cmd(du_cmd)
394 blocks = int(out.split()[0])
395
396 rootfs_size = self.get_rootfs_size(blocks)
397
398 label_str = "-n boot"
399 if self.label:
400 label_str = "-n %s" % self.label
401
402 size_str = ""
403
404 extraopts = self.mkfs_extraopts or '-S 512'
405
406 dosfs_cmd = "mkdosfs %s -i %s %s %s -C %s %d" % \
407 (label_str, self.fsuuid, size_str, extraopts, rootfs,
408 rootfs_size)
409 exec_native_cmd(dosfs_cmd, native_sysroot)
410
411 mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (rootfs, rootfs_dir)
412 exec_native_cmd(mcopy_cmd, native_sysroot)
413
414 if self.updated_fstab_path and self.has_fstab and not self.no_fstab_update:
415 mcopy_cmd = "mcopy -m -i %s %s ::/etc/fstab" % (rootfs, self.updated_fstab_path)
416 exec_native_cmd(mcopy_cmd, native_sysroot)
417
418 chmod_cmd = "chmod 644 %s" % rootfs
419 exec_cmd(chmod_cmd)
420
421 prepare_rootfs_vfat = prepare_rootfs_msdos
422
423 def prepare_rootfs_squashfs(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
424 native_sysroot, pseudo):
425 """
426 Prepare content for a squashfs rootfs partition.
427 """
428 extraopts = self.mkfs_extraopts or '-noappend'
429 squashfs_cmd = "mksquashfs %s %s %s" % \
430 (rootfs_dir, rootfs, extraopts)
431 exec_native_cmd(squashfs_cmd, native_sysroot, pseudo=pseudo)
432
433 def prepare_rootfs_erofs(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
434 native_sysroot, pseudo):
435 """
436 Prepare content for a erofs rootfs partition.
437 """
438 extraopts = self.mkfs_extraopts or ''
439 erofs_cmd = "mkfs.erofs %s -U %s %s %s" % \
440 (extraopts, self.fsuuid, rootfs, rootfs_dir)
441 exec_native_cmd(erofs_cmd, native_sysroot, pseudo=pseudo)
442
443 def prepare_empty_partition_none(self, rootfs, oe_builddir, native_sysroot):
444 pass
445
446 def prepare_empty_partition_ext(self, rootfs, oe_builddir,
447 native_sysroot):
448 """
449 Prepare an empty ext2/3/4 partition.
450 """
451 size = self.fs_size
452 with open(rootfs, 'w') as sparse:
453 os.ftruncate(sparse.fileno(), size * 1024)
454
455 extraopts = self.mkfs_extraopts or "-i 8192"
456
457 # use hash_seed to generate reproducible ext4 images
458 (extraopts, pseudo) = self.get_hash_seed_ext4(extraopts, None)
459
460 label_str = ""
461 if self.label:
462 label_str = "-L %s" % self.label
463
464 mkfs_cmd = "mkfs.%s -F %s %s -U %s %s" % \
465 (self.fstype, extraopts, label_str, self.fsuuid, rootfs)
466 exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
467
468 self.check_for_Y2038_problem(rootfs, native_sysroot)
469
470 def prepare_empty_partition_btrfs(self, rootfs, oe_builddir,
471 native_sysroot):
472 """
473 Prepare an empty btrfs partition.
474 """
475 size = self.fs_size
476 with open(rootfs, 'w') as sparse:
477 os.ftruncate(sparse.fileno(), size * 1024)
478
479 label_str = ""
480 if self.label:
481 label_str = "-L %s" % self.label
482
483 mkfs_cmd = "mkfs.%s -b %d %s -U %s %s %s" % \
484 (self.fstype, self.size * 1024, label_str, self.fsuuid,
485 self.mkfs_extraopts, rootfs)
486 exec_native_cmd(mkfs_cmd, native_sysroot)
487
488 def prepare_empty_partition_msdos(self, rootfs, oe_builddir,
489 native_sysroot):
490 """
491 Prepare an empty vfat partition.
492 """
493 blocks = self.fs_size
494
495 label_str = "-n boot"
496 if self.label:
497 label_str = "-n %s" % self.label
498
499 size_str = ""
500
501 extraopts = self.mkfs_extraopts or '-S 512'
502
503 dosfs_cmd = "mkdosfs %s -i %s %s %s -C %s %d" % \
504 (label_str, self.fsuuid, extraopts, size_str, rootfs,
505 blocks)
506
507 exec_native_cmd(dosfs_cmd, native_sysroot)
508
509 chmod_cmd = "chmod 644 %s" % rootfs
510 exec_cmd(chmod_cmd)
511
512 prepare_empty_partition_vfat = prepare_empty_partition_msdos
513
514 def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot):
515 """
516 Prepare a swap partition.
517 """
518 path = "%s/fs.%s" % (cr_workdir, self.fstype)
519
520 with open(path, 'w') as sparse:
521 os.ftruncate(sparse.fileno(), self.size * 1024)
522
523 label_str = ""
524 if self.label:
525 label_str = "-L %s" % self.label
526
527 mkswap_cmd = "mkswap %s -U %s %s" % (label_str, self.fsuuid, path)
528 exec_native_cmd(mkswap_cmd, native_sysroot)
529
530 def check_for_Y2038_problem(self, rootfs, native_sysroot):
531 """
532 Check if the filesystem is affected by the Y2038 problem
533 (Y2038 problem = 32 bit time_t overflow in January 2038)
534 """
535 def get_err_str(part):
536 err = "The {} filesystem {} has no Y2038 support."
537 if part.mountpoint:
538 args = [part.fstype, "mounted at %s" % part.mountpoint]
539 elif part.label:
540 args = [part.fstype, "labeled '%s'" % part.label]
541 elif part.part_name:
542 args = [part.fstype, "in partition '%s'" % part.part_name]
543 else:
544 args = [part.fstype, "in partition %s" % part.num]
545 return err.format(*args)
546
547 # ext2 and ext3 are always affected by the Y2038 problem
548 if self.fstype in ["ext2", "ext3"]:
549 logger.warn(get_err_str(self))
550 return
551
552 ret, out = exec_native_cmd("dumpe2fs %s" % rootfs, native_sysroot)
553
554 # if ext4 is affected by the Y2038 problem depends on the inode size
555 for line in out.splitlines():
556 if line.startswith("Inode size:"):
557 size = int(line.split(":")[1].strip())
558 if size < 256:
559 logger.warn("%s Inodes (of size %d) are too small." %
560 (get_err_str(self), size))
561 break
562