summaryrefslogtreecommitdiff
path: root/meta/lib/oe/rootfs.py
blob: a348b975c2ab0a22470795da30397abb7043f4a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
from abc import ABCMeta, abstractmethod
from oe.utils import execute_pre_post_process
from oe.package_manager import *
from oe.manifest import *
import oe.path
import filecmp
import shutil
import os
import subprocess
import re


class Rootfs(object, metaclass=ABCMeta):
    """
    This is an abstract class. Do not instantiate this directly.
    """

    def __init__(self, d, progress_reporter=None):
        self.d = d
        self.pm = None
        self.image_rootfs = self.d.getVar('IMAGE_ROOTFS', True)
        self.deploydir = self.d.getVar('IMGDEPLOYDIR', True)
        self.progress_reporter = progress_reporter

        self.install_order = Manifest.INSTALL_ORDER

    @abstractmethod
    def _create(self):
        pass

    @abstractmethod
    def _get_delayed_postinsts(self):
        pass

    @abstractmethod
    def _save_postinsts(self):
        pass

    @abstractmethod
    def _log_check(self):
        pass

    def _log_check_common(self, type, match):
        # Ignore any lines containing log_check to avoid recursion, and ignore
        # lines beginning with a + since sh -x may emit code which isn't
        # actually executed, but may contain error messages
        excludes = [ 'log_check', r'^\+' ]
        if hasattr(self, 'log_check_expected_regexes'):
            excludes.extend(self.log_check_expected_regexes)
        excludes = [re.compile(x) for x in excludes]
        r = re.compile(match)
        log_path = self.d.expand("${T}/log.do_rootfs")
        messages = []
        with open(log_path, 'r') as log:
            for line in log:
                for ee in excludes:
                    m = ee.search(line)
                    if m:
                        break
                if m:
                    continue

                m = r.search(line)
                if m:
                    messages.append('[log_check] %s' % line)
        if messages:
            if len(messages) == 1:
                msg = '1 %s message' % type
            else:
                msg = '%d %s messages' % (len(messages), type)
            msg = '[log_check] %s: found %s in the logfile:\n%s' % \
                (self.d.getVar('PN', True), msg, ''.join(messages))
            if type == 'error':
                bb.fatal(msg)
            else:
                bb.warn(msg)

    def _log_check_warn(self):
        self._log_check_common('warning', '^(warn|Warn|WARNING:)')

    def _log_check_error(self):
        self._log_check_common('error', self.log_check_regex)

    def _insert_feed_uris(self):
        if bb.utils.contains("IMAGE_FEATURES", "package-management",
                         True, False, self.d):
            self.pm.insert_feeds_uris()

    @abstractmethod
    def _handle_intercept_failure(self, failed_script):
        pass

    """
    The _cleanup() method should be used to clean-up stuff that we don't really
    want to end up on target. For example, in the case of RPM, the DB locks.
    The method is called, once, at the end of create() method.
    """
    @abstractmethod
    def _cleanup(self):
        pass

    def _setup_dbg_rootfs(self, dirs):
        gen_debugfs = self.d.getVar('IMAGE_GEN_DEBUGFS', True) or '0'
        if gen_debugfs != '1':
           return

        bb.note("  Renaming the original rootfs...")
        try:
            shutil.rmtree(self.image_rootfs + '-orig')
        except:
            pass
        os.rename(self.image_rootfs, self.image_rootfs + '-orig')

        bb.note("  Creating debug rootfs...")
        bb.utils.mkdirhier(self.image_rootfs)

        bb.note("  Copying back package database...")
        for dir in dirs:
            if not os.path.isdir(self.image_rootfs + '-orig' + dir):
                continue
            bb.utils.mkdirhier(self.image_rootfs + os.path.dirname(dir))
            shutil.copytree(self.image_rootfs + '-orig' + dir, self.image_rootfs + dir, symlinks=True)

        cpath = oe.cachedpath.CachedPath()
        # Copy files located in /usr/lib/debug or /usr/src/debug
        for dir in ["/usr/lib/debug", "/usr/src/debug"]:
            src = self.image_rootfs + '-orig' + dir
            if cpath.exists(src):
                dst = self.image_rootfs + dir
                bb.utils.mkdirhier(os.path.dirname(dst))
                shutil.copytree(src, dst)

        # Copy files with suffix '.debug' or located in '.debug' dir.
        for root, dirs, files in cpath.walk(self.image_rootfs + '-orig'):
            relative_dir = root[len(self.image_rootfs + '-orig'):]
            for f in files:
                if f.endswith('.debug') or '/.debug' in relative_dir:
                    bb.utils.mkdirhier(self.image_rootfs + relative_dir)
                    shutil.copy(os.path.join(root, f),
                                self.image_rootfs + relative_dir)

        bb.note("  Install complementary '*-dbg' packages...")
        self.pm.install_complementary('*-dbg')

        bb.note("  Rename debug rootfs...")
        try:
            shutil.rmtree(self.image_rootfs + '-dbg')
        except:
            pass
        os.rename(self.image_rootfs, self.image_rootfs + '-dbg')

        bb.note("  Restoreing original rootfs...")
        os.rename(self.image_rootfs + '-orig', self.image_rootfs)

    def _exec_shell_cmd(self, cmd):
        fakerootcmd = self.d.getVar('FAKEROOT', True)
        if fakerootcmd is not None:
            exec_cmd = [fakerootcmd, cmd]
        else:
            exec_cmd = cmd

        try:
            subprocess.check_output(exec_cmd, stderr=subprocess.STDOUT)
        except subprocess.CalledProcessError as e:
            return("Command '%s' returned %d:\n%s" % (e.cmd, e.returncode, e.output))

        return None

    def create(self):
        bb.note("###### Generate rootfs #######")
        pre_process_cmds = self.d.getVar("ROOTFS_PREPROCESS_COMMAND", True)
        post_process_cmds = self.d.getVar("ROOTFS_POSTPROCESS_COMMAND", True)
        rootfs_post_install_cmds = self.d.getVar('ROOTFS_POSTINSTALL_COMMAND', True)

        postinst_intercepts_dir = self.d.getVar("POSTINST_INTERCEPTS_DIR", True)
        if not postinst_intercepts_dir:
            postinst_intercepts_dir = self.d.expand("${COREBASE}/scripts/postinst-intercepts")
        intercepts_dir = os.path.join(self.d.getVar('WORKDIR', True),
                                      "intercept_scripts")

        bb.utils.remove(intercepts_dir, True)

        bb.utils.mkdirhier(self.image_rootfs)

        bb.utils.mkdirhier(self.deploydir)

        shutil.copytree(postinst_intercepts_dir, intercepts_dir)

        shutil.copy(self.d.expand("${COREBASE}/meta/files/deploydir_readme.txt"),
                    self.deploydir +
                    "/README_-_DO_NOT_DELETE_FILES_IN_THIS_DIRECTORY.txt")

        execute_pre_post_process(self.d, pre_process_cmds)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        # call the package manager dependent create method
        self._create()

        sysconfdir = self.image_rootfs + self.d.getVar('sysconfdir', True)
        bb.utils.mkdirhier(sysconfdir)
        with open(sysconfdir + "/version", "w+") as ver:
            ver.write(self.d.getVar('BUILDNAME', True) + "\n")

        execute_pre_post_process(self.d, rootfs_post_install_cmds)

        self._run_intercepts()

        execute_pre_post_process(self.d, post_process_cmds)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        if bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs",
                         True, False, self.d):
            delayed_postinsts = self._get_delayed_postinsts()
            if delayed_postinsts is not None:
                bb.fatal("The following packages could not be configured "
                         "offline and rootfs is read-only: %s" %
                         delayed_postinsts)

        if self.d.getVar('USE_DEVFS', True) != "1":
            self._create_devfs()

        self._uninstall_unneeded()

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self._insert_feed_uris()

        self._run_ldconfig()

        if self.d.getVar('USE_DEPMOD', True) != "0":
            self._generate_kernel_module_deps()

        self._cleanup()
        self._log_check()

        if self.progress_reporter:
            self.progress_reporter.next_stage()


    def _uninstall_unneeded(self):
        # Remove unneeded init script symlinks
        delayed_postinsts = self._get_delayed_postinsts()
        if delayed_postinsts is None:
            if os.path.exists(self.d.expand("${IMAGE_ROOTFS}${sysconfdir}/init.d/run-postinsts")):
                self._exec_shell_cmd(["update-rc.d", "-f", "-r",
                                      self.d.getVar('IMAGE_ROOTFS', True),
                                      "run-postinsts", "remove"])

        image_rorfs = bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs",
                                        True, False, self.d)
        image_rorfs_force = self.d.getVar('FORCE_RO_REMOVE', True)

        if image_rorfs or image_rorfs_force == "1":
            # Remove components that we don't need if it's a read-only rootfs
            unneeded_pkgs = self.d.getVar("ROOTFS_RO_UNNEEDED", True).split()
            pkgs_installed = image_list_installed_packages(self.d)
            pkgs_to_remove = [pkg for pkg in pkgs_installed if pkg in unneeded_pkgs]

            if len(pkgs_to_remove) > 0:
                self.pm.remove(pkgs_to_remove, False)

        if delayed_postinsts:
            self._save_postinsts()
            if image_rorfs:
                bb.warn("There are post install scripts "
                        "in a read-only rootfs")

        post_uninstall_cmds = self.d.getVar("ROOTFS_POSTUNINSTALL_COMMAND", True)
        execute_pre_post_process(self.d, post_uninstall_cmds)

        runtime_pkgmanage = bb.utils.contains("IMAGE_FEATURES", "package-management",
                                              True, False, self.d)
        if not runtime_pkgmanage:
            # Remove the package manager data files
            self.pm.remove_packaging_data()

    def _run_intercepts(self):
        intercepts_dir = os.path.join(self.d.getVar('WORKDIR', True),
                                      "intercept_scripts")

        bb.note("Running intercept scripts:")
        os.environ['D'] = self.image_rootfs
        os.environ['STAGING_DIR_NATIVE'] = self.d.getVar('STAGING_DIR_NATIVE', True)
        for script in os.listdir(intercepts_dir):
            script_full = os.path.join(intercepts_dir, script)

            if script == "postinst_intercept" or not os.access(script_full, os.X_OK):
                continue

            bb.note("> Executing %s intercept ..." % script)

            try:
                subprocess.check_call(script_full)
            except subprocess.CalledProcessError as e:
                bb.warn("The postinstall intercept hook '%s' failed (exit code: %d)! See log for details!" %
                        (script, e.returncode))

                with open(script_full) as intercept:
                    registered_pkgs = None
                    for line in intercept.read().split("\n"):
                        m = re.match("^##PKGS:(.*)", line)
                        if m is not None:
                            registered_pkgs = m.group(1).strip()
                            break

                    if registered_pkgs is not None:
                        bb.warn("The postinstalls for the following packages "
                                "will be postponed for first boot: %s" %
                                registered_pkgs)

                        # call the backend dependent handler
                        self._handle_intercept_failure(registered_pkgs)

    def _run_ldconfig(self):
        if self.d.getVar('LDCONFIGDEPEND', True):
            bb.note("Executing: ldconfig -r" + self.image_rootfs + "-c new -v")
            self._exec_shell_cmd(['ldconfig', '-r', self.image_rootfs, '-c',
                                  'new', '-v'])

    def _check_for_kernel_modules(self, modules_dir):
        for root, dirs, files in os.walk(modules_dir, topdown=True):
            for name in files:
                found_ko = name.endswith(".ko")
                if found_ko:
                    return found_ko
        return False

    def _generate_kernel_module_deps(self):
        modules_dir = os.path.join(self.image_rootfs, 'lib', 'modules')
        # if we don't have any modules don't bother to do the depmod
        if not self._check_for_kernel_modules(modules_dir):
            bb.note("No Kernel Modules found, not running depmod")
            return

        kernel_abi_ver_file = oe.path.join(self.d.getVar('PKGDATA_DIR', True), "kernel-depmod",
                                           'kernel-abiversion')
        if not os.path.exists(kernel_abi_ver_file):
            bb.fatal("No kernel-abiversion file found (%s), cannot run depmod, aborting" % kernel_abi_ver_file)

        kernel_ver = open(kernel_abi_ver_file).read().strip(' \n')
        versioned_modules_dir = os.path.join(self.image_rootfs, modules_dir, kernel_ver)

        bb.utils.mkdirhier(versioned_modules_dir)

        self._exec_shell_cmd(['depmodwrapper', '-a', '-b', self.image_rootfs, kernel_ver])

    """
    Create devfs:
    * IMAGE_DEVICE_TABLE is the old name to an absolute path to a device table file
    * IMAGE_DEVICE_TABLES is a new name for a file, or list of files, seached
      for in the BBPATH
    If neither are specified then the default name of files/device_table-minimal.txt
    is searched for in the BBPATH (same as the old version.)
    """
    def _create_devfs(self):
        devtable_list = []
        devtable = self.d.getVar('IMAGE_DEVICE_TABLE', True)
        if devtable is not None:
            devtable_list.append(devtable)
        else:
            devtables = self.d.getVar('IMAGE_DEVICE_TABLES', True)
            if devtables is None:
                devtables = 'files/device_table-minimal.txt'
            for devtable in devtables.split():
                devtable_list.append("%s" % bb.utils.which(self.d.getVar('BBPATH', True), devtable))

        for devtable in devtable_list:
            self._exec_shell_cmd(["makedevs", "-r",
                                  self.image_rootfs, "-D", devtable])


class RpmRootfs(Rootfs):
    def __init__(self, d, manifest_dir, progress_reporter=None):
        super(RpmRootfs, self).__init__(d, progress_reporter)
        self.log_check_regex = '(unpacking of archive failed|Cannot find package'\
                               '|exit 1|ERROR: |Error: |Error |ERROR '\
                               '|Failed |Failed: |Failed$|Failed\(\d+\):)'
        self.manifest = RpmManifest(d, manifest_dir)

        self.pm = RpmPM(d,
                        d.getVar('IMAGE_ROOTFS', True),
                        self.d.getVar('TARGET_VENDOR', True)
                        )

        self.inc_rpm_image_gen = self.d.getVar('INC_RPM_IMAGE_GEN', True)
        if self.inc_rpm_image_gen != "1":
            bb.utils.remove(self.image_rootfs, True)
        else:
            self.pm.recovery_packaging_data()
        bb.utils.remove(self.d.getVar('MULTILIB_TEMP_ROOTFS', True), True)

        self.pm.create_configs()

    '''
    While rpm incremental image generation is enabled, it will remove the
    unneeded pkgs by comparing the new install solution manifest and the
    old installed manifest.
    '''
    def _create_incremental(self, pkgs_initial_install):
        if self.inc_rpm_image_gen == "1":

            pkgs_to_install = list()
            for pkg_type in pkgs_initial_install:
                pkgs_to_install += pkgs_initial_install[pkg_type]

            installed_manifest = self.pm.load_old_install_solution()
            solution_manifest = self.pm.dump_install_solution(pkgs_to_install)

            pkg_to_remove = list()
            for pkg in installed_manifest:
                if pkg not in solution_manifest:
                    pkg_to_remove.append(pkg)

            self.pm.update()

            bb.note('incremental update -- upgrade packages in place ')
            self.pm.upgrade()
            if pkg_to_remove != []:
                bb.note('incremental removed: %s' % ' '.join(pkg_to_remove))
                self.pm.remove(pkg_to_remove)

    def _create(self):
        pkgs_to_install = self.manifest.parse_initial_manifest()
        rpm_pre_process_cmds = self.d.getVar('RPM_PREPROCESS_COMMANDS', True)
        rpm_post_process_cmds = self.d.getVar('RPM_POSTPROCESS_COMMANDS', True)

        # update PM index files
        self.pm.write_index()

        execute_pre_post_process(self.d, rpm_pre_process_cmds)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self.pm.dump_all_available_pkgs()

        if self.inc_rpm_image_gen == "1":
            self._create_incremental(pkgs_to_install)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self.pm.update()

        pkgs = []
        pkgs_attempt = []
        for pkg_type in pkgs_to_install:
            if pkg_type == Manifest.PKG_TYPE_ATTEMPT_ONLY:
                pkgs_attempt += pkgs_to_install[pkg_type]
            else:
                pkgs += pkgs_to_install[pkg_type]

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self.pm.install(pkgs)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self.pm.install(pkgs_attempt, True)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self.pm.install_complementary()

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self._setup_dbg_rootfs(['/etc/rpm', '/var/lib/rpm', '/var/lib/smart'])

        execute_pre_post_process(self.d, rpm_post_process_cmds)

        self._log_check()

        if self.inc_rpm_image_gen == "1":
            self.pm.backup_packaging_data()

        self.pm.rpm_setup_smart_target_config()

        if self.progress_reporter:
            self.progress_reporter.next_stage()


    @staticmethod
    def _depends_list():
        return ['DEPLOY_DIR_RPM', 'INC_RPM_IMAGE_GEN', 'RPM_PREPROCESS_COMMANDS',
                'RPM_POSTPROCESS_COMMANDS', 'RPM_PREFER_ELF_ARCH']

    def _get_delayed_postinsts(self):
        postinst_dir = self.d.expand("${IMAGE_ROOTFS}${sysconfdir}/rpm-postinsts")
        if os.path.isdir(postinst_dir):
            files = os.listdir(postinst_dir)
            for f in files:
                bb.note('Delayed package scriptlet: %s' % f)
            return files

        return None

    def _save_postinsts(self):
        # this is just a stub. For RPM, the failed postinstalls are
        # already saved in /etc/rpm-postinsts
        pass

    def _log_check(self):
        self._log_check_warn()
        self._log_check_error()

    def _handle_intercept_failure(self, registered_pkgs):
        rpm_postinsts_dir = self.image_rootfs + self.d.expand('${sysconfdir}/rpm-postinsts/')
        bb.utils.mkdirhier(rpm_postinsts_dir)

        # Save the package postinstalls in /etc/rpm-postinsts
        for pkg in registered_pkgs.split():
            self.pm.save_rpmpostinst(pkg)

    def _cleanup(self):
        # during the execution of postprocess commands, rpm is called several
        # times to get the files installed, dependencies, etc. This creates the
        # __db.00* (Berkeley DB files that hold locks, rpm specific environment
        # settings, etc.), that should not get into the final rootfs
        self.pm.unlock_rpm_db()
        if os.path.isdir(self.pm.install_dir_path + "/tmp") and not os.listdir(self.pm.install_dir_path + "/tmp"):
           bb.utils.remove(self.pm.install_dir_path + "/tmp", True)
        if os.path.isdir(self.pm.install_dir_path) and not os.listdir(self.pm.install_dir_path):
           bb.utils.remove(self.pm.install_dir_path, True)

class DpkgOpkgRootfs(Rootfs):
    def __init__(self, d, progress_reporter=None):
        super(DpkgOpkgRootfs, self).__init__(d, progress_reporter)

    def _get_pkgs_postinsts(self, status_file):
        def _get_pkg_depends_list(pkg_depends):
            pkg_depends_list = []
            # filter version requirements like libc (>= 1.1)
            for dep in pkg_depends.split(', '):
                m_dep = re.match("^(.*) \(.*\)$", dep)
                if m_dep:
                    dep = m_dep.group(1)
                pkg_depends_list.append(dep)

            return pkg_depends_list

        pkgs = {}
        pkg_name = ""
        pkg_status_match = False
        pkg_depends = ""

        with open(status_file) as status:
            data = status.read()
            status.close()
            for line in data.split('\n'):
                m_pkg = re.match("^Package: (.*)", line)
                m_status = re.match("^Status:.*unpacked", line)
                m_depends = re.match("^Depends: (.*)", line)

                if m_pkg is not None:
                    if pkg_name and pkg_status_match:
                        pkgs[pkg_name] = _get_pkg_depends_list(pkg_depends)

                    pkg_name = m_pkg.group(1)
                    pkg_status_match = False
                    pkg_depends = ""
                elif m_status is not None:
                    pkg_status_match = True
                elif m_depends is not None:
                    pkg_depends = m_depends.group(1)

        # remove package dependencies not in postinsts
        pkg_names = list(pkgs.keys())
        for pkg_name in pkg_names:
            deps = pkgs[pkg_name][:]

            for d in deps:
                if d not in pkg_names:
                    pkgs[pkg_name].remove(d)

        return pkgs

    def _get_delayed_postinsts_common(self, status_file):
        def _dep_resolve(graph, node, resolved, seen):
            seen.append(node)

            for edge in graph[node]:
                if edge not in resolved:
                    if edge in seen:
                        raise RuntimeError("Packages %s and %s have " \
                                "a circular dependency in postinsts scripts." \
                                % (node, edge))
                    _dep_resolve(graph, edge, resolved, seen)

            resolved.append(node)

        pkg_list = []

        pkgs = None
        if not self.d.getVar('PACKAGE_INSTALL', True).strip():
            bb.note("Building empty image")
        else:
            pkgs = self._get_pkgs_postinsts(status_file)
        if pkgs:
            root = "__packagegroup_postinst__"
            pkgs[root] = list(pkgs.keys())
            _dep_resolve(pkgs, root, pkg_list, [])
            pkg_list.remove(root)

        if len(pkg_list) == 0:
            return None

        return pkg_list

    def _save_postinsts_common(self, dst_postinst_dir, src_postinst_dir):
        num = 0
        for p in self._get_delayed_postinsts():
            bb.utils.mkdirhier(dst_postinst_dir)

            if os.path.exists(os.path.join(src_postinst_dir, p + ".postinst")):
                shutil.copy(os.path.join(src_postinst_dir, p + ".postinst"),
                            os.path.join(dst_postinst_dir, "%03d-%s" % (num, p)))

            num += 1

class DpkgRootfs(DpkgOpkgRootfs):
    def __init__(self, d, manifest_dir, progress_reporter=None):
        super(DpkgRootfs, self).__init__(d, progress_reporter)
        self.log_check_regex = '^E:'
        self.log_check_expected_regexes = \
        [
            "^E: Unmet dependencies."
        ]

        bb.utils.remove(self.image_rootfs, True)
        bb.utils.remove(self.d.getVar('MULTILIB_TEMP_ROOTFS', True), True)
        self.manifest = DpkgManifest(d, manifest_dir)
        self.pm = DpkgPM(d, d.getVar('IMAGE_ROOTFS', True),
                         d.getVar('PACKAGE_ARCHS', True),
                         d.getVar('DPKG_ARCH', True))


    def _create(self):
        pkgs_to_install = self.manifest.parse_initial_manifest()
        deb_pre_process_cmds = self.d.getVar('DEB_PREPROCESS_COMMANDS', True)
        deb_post_process_cmds = self.d.getVar('DEB_POSTPROCESS_COMMANDS', True)

        alt_dir = self.d.expand("${IMAGE_ROOTFS}/var/lib/dpkg/alternatives")
        bb.utils.mkdirhier(alt_dir)

        # update PM index files
        self.pm.write_index()

        execute_pre_post_process(self.d, deb_pre_process_cmds)

        if self.progress_reporter:
            self.progress_reporter.next_stage()
            # Don't support incremental, so skip that
            self.progress_reporter.next_stage()

        self.pm.update()

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        for pkg_type in self.install_order:
            if pkg_type in pkgs_to_install:
                self.pm.install(pkgs_to_install[pkg_type],
                                [False, True][pkg_type == Manifest.PKG_TYPE_ATTEMPT_ONLY])

        if self.progress_reporter:
            # Don't support attemptonly, so skip that
            self.progress_reporter.next_stage()
            self.progress_reporter.next_stage()

        self.pm.install_complementary()

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self._setup_dbg_rootfs(['/var/lib/dpkg'])

        self.pm.fix_broken_dependencies()

        self.pm.mark_packages("installed")

        self.pm.run_pre_post_installs()

        execute_pre_post_process(self.d, deb_post_process_cmds)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

    @staticmethod
    def _depends_list():
        return ['DEPLOY_DIR_DEB', 'DEB_SDK_ARCH', 'APTCONF_TARGET', 'APT_ARGS', 'DPKG_ARCH', 'DEB_PREPROCESS_COMMANDS', 'DEB_POSTPROCESS_COMMANDS']

    def _get_delayed_postinsts(self):
        status_file = self.image_rootfs + "/var/lib/dpkg/status"
        return self._get_delayed_postinsts_common(status_file)

    def _save_postinsts(self):
        dst_postinst_dir = self.d.expand("${IMAGE_ROOTFS}${sysconfdir}/deb-postinsts")
        src_postinst_dir = self.d.expand("${IMAGE_ROOTFS}/var/lib/dpkg/info")
        return self._save_postinsts_common(dst_postinst_dir, src_postinst_dir)

    def _handle_intercept_failure(self, registered_pkgs):
        self.pm.mark_packages("unpacked", registered_pkgs.split())

    def _log_check(self):
        self._log_check_warn()
        self._log_check_error()

    def _cleanup(self):
        pass


class OpkgRootfs(DpkgOpkgRootfs):
    def __init__(self, d, manifest_dir, progress_reporter=None):
        super(OpkgRootfs, self).__init__(d, progress_reporter)
        self.log_check_regex = '(exit 1|Collected errors)'

        self.manifest = OpkgManifest(d, manifest_dir)
        self.opkg_conf = self.d.getVar("IPKGCONF_TARGET", True)
        self.pkg_archs = self.d.getVar("ALL_MULTILIB_PACKAGE_ARCHS", True)

        self.inc_opkg_image_gen = self.d.getVar('INC_IPK_IMAGE_GEN', True) or ""
        if self._remove_old_rootfs():
            bb.utils.remove(self.image_rootfs, True)
            self.pm = OpkgPM(d,
                             self.image_rootfs,
                             self.opkg_conf,
                             self.pkg_archs)
        else:
            self.pm = OpkgPM(d,
                             self.image_rootfs,
                             self.opkg_conf,
                             self.pkg_archs)
            self.pm.recover_packaging_data()

        bb.utils.remove(self.d.getVar('MULTILIB_TEMP_ROOTFS', True), True)

    def _prelink_file(self, root_dir, filename):
        bb.note('prelink %s in %s' % (filename, root_dir))
        prelink_cfg = oe.path.join(root_dir,
                                   self.d.expand('${sysconfdir}/prelink.conf'))
        if not os.path.exists(prelink_cfg):
            shutil.copy(self.d.expand('${STAGING_DIR_NATIVE}${sysconfdir_native}/prelink.conf'),
                        prelink_cfg)

        cmd_prelink = self.d.expand('${STAGING_DIR_NATIVE}${sbindir_native}/prelink')
        self._exec_shell_cmd([cmd_prelink,
                              '--root',
                              root_dir,
                              '-amR',
                              '-N',
                              '-c',
                              self.d.expand('${sysconfdir}/prelink.conf')])

    '''
    Compare two files with the same key twice to see if they are equal.
    If they are not equal, it means they are duplicated and come from
    different packages.
    1st: Comapre them directly;
    2nd: While incremental image creation is enabled, one of the
         files could be probaly prelinked in the previous image
         creation and the file has been changed, so we need to
         prelink the other one and compare them.
    '''
    def _file_equal(self, key, f1, f2):

        # Both of them are not prelinked
        if filecmp.cmp(f1, f2):
            return True

        if self.image_rootfs not in f1:
            self._prelink_file(f1.replace(key, ''), f1)

        if self.image_rootfs not in f2:
            self._prelink_file(f2.replace(key, ''), f2)

        # Both of them are prelinked
        if filecmp.cmp(f1, f2):
            return True

        # Not equal
        return False

    """
    This function was reused from the old implementation.
    See commit: "image.bbclass: Added variables for multilib support." by
    Lianhao Lu.
    """
    def _multilib_sanity_test(self, dirs):

        allow_replace = self.d.getVar("MULTILIBRE_ALLOW_REP", True)
        if allow_replace is None:
            allow_replace = ""

        allow_rep = re.compile(re.sub("\|$", "", allow_replace))
        error_prompt = "Multilib check error:"

        files = {}
        for dir in dirs:
            for root, subfolders, subfiles in os.walk(dir):
                for file in subfiles:
                    item = os.path.join(root, file)
                    key = str(os.path.join("/", os.path.relpath(item, dir)))

                    valid = True
                    if key in files:
                        #check whether the file is allow to replace
                        if allow_rep.match(key):
                            valid = True
                        else:
                            if os.path.exists(files[key]) and \
                               os.path.exists(item) and \
                               not self._file_equal(key, files[key], item):
                                valid = False
                                bb.fatal("%s duplicate files %s %s is not the same\n" %
                                         (error_prompt, item, files[key]))

                    #pass the check, add to list
                    if valid:
                        files[key] = item

    def _multilib_test_install(self, pkgs):
        ml_temp = self.d.getVar("MULTILIB_TEMP_ROOTFS", True)
        bb.utils.mkdirhier(ml_temp)

        dirs = [self.image_rootfs]

        for variant in self.d.getVar("MULTILIB_VARIANTS", True).split():
            ml_target_rootfs = os.path.join(ml_temp, variant)

            bb.utils.remove(ml_target_rootfs, True)

            ml_opkg_conf = os.path.join(ml_temp,
                                        variant + "-" + os.path.basename(self.opkg_conf))

            ml_pm = OpkgPM(self.d, ml_target_rootfs, ml_opkg_conf, self.pkg_archs)

            ml_pm.update()
            ml_pm.install(pkgs)

            dirs.append(ml_target_rootfs)

        self._multilib_sanity_test(dirs)

    '''
    While ipk incremental image generation is enabled, it will remove the
    unneeded pkgs by comparing the old full manifest in previous existing
    image and the new full manifest in the current image.
    '''
    def _remove_extra_packages(self, pkgs_initial_install):
        if self.inc_opkg_image_gen == "1":
            # Parse full manifest in previous existing image creation session
            old_full_manifest = self.manifest.parse_full_manifest()

            # Create full manifest for the current image session, the old one
            # will be replaced by the new one.
            self.manifest.create_full(self.pm)

            # Parse full manifest in current image creation session
            new_full_manifest = self.manifest.parse_full_manifest()

            pkg_to_remove = list()
            for pkg in old_full_manifest:
                if pkg not in new_full_manifest:
                    pkg_to_remove.append(pkg)

            if pkg_to_remove != []:
                bb.note('decremental removed: %s' % ' '.join(pkg_to_remove))
                self.pm.remove(pkg_to_remove)

    '''
    Compare with previous existing image creation, if some conditions
    triggered, the previous old image should be removed.
    The conditions include any of 'PACKAGE_EXCLUDE, NO_RECOMMENDATIONS
    and BAD_RECOMMENDATIONS' has been changed.
    '''
    def _remove_old_rootfs(self):
        if self.inc_opkg_image_gen != "1":
            return True

        vars_list_file = self.d.expand('${T}/vars_list')

        old_vars_list = ""
        if os.path.exists(vars_list_file):
            old_vars_list = open(vars_list_file, 'r+').read()

        new_vars_list = '%s:%s:%s\n' % \
                ((self.d.getVar('BAD_RECOMMENDATIONS', True) or '').strip(),
                 (self.d.getVar('NO_RECOMMENDATIONS', True) or '').strip(),
                 (self.d.getVar('PACKAGE_EXCLUDE', True) or '').strip())
        open(vars_list_file, 'w+').write(new_vars_list)

        if old_vars_list != new_vars_list:
            return True

        return False

    def _create(self):
        pkgs_to_install = self.manifest.parse_initial_manifest()
        opkg_pre_process_cmds = self.d.getVar('OPKG_PREPROCESS_COMMANDS', True)
        opkg_post_process_cmds = self.d.getVar('OPKG_POSTPROCESS_COMMANDS', True)

        # update PM index files, unless users provide their own feeds
        if (self.d.getVar('BUILD_IMAGES_FROM_FEEDS', True) or "") != "1":
            self.pm.write_index()

        execute_pre_post_process(self.d, opkg_pre_process_cmds)

        if self.progress_reporter:
            self.progress_reporter.next_stage()
            # Steps are a bit different in order, skip next
            self.progress_reporter.next_stage()

        self.pm.update()

        self.pm.handle_bad_recommendations()

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        if self.inc_opkg_image_gen == "1":
            self._remove_extra_packages(pkgs_to_install)

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        for pkg_type in self.install_order:
            if pkg_type in pkgs_to_install:
                # For multilib, we perform a sanity test before final install
                # If sanity test fails, it will automatically do a bb.fatal()
                # and the installation will stop
                if pkg_type == Manifest.PKG_TYPE_MULTILIB:
                    self._multilib_test_install(pkgs_to_install[pkg_type])

                self.pm.install(pkgs_to_install[pkg_type],
                                [False, True][pkg_type == Manifest.PKG_TYPE_ATTEMPT_ONLY])

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self.pm.install_complementary()

        if self.progress_reporter:
            self.progress_reporter.next_stage()

        self._setup_dbg_rootfs(['/etc', '/var/lib/opkg', '/usr/lib/ssl'])

        execute_pre_post_process(self.d, opkg_post_process_cmds)

        if self.inc_opkg_image_gen == "1":
            self.pm.backup_packaging_data()

        if self.progress_reporter:
            self.progress_reporter.next_stage()

    @staticmethod
    def _depends_list():
        return ['IPKGCONF_SDK', 'IPK_FEED_URIS', 'DEPLOY_DIR_IPK', 'IPKGCONF_TARGET', 'INC_IPK_IMAGE_GEN', 'OPKG_ARGS', 'OPKGLIBDIR', 'OPKG_PREPROCESS_COMMANDS', 'OPKG_POSTPROCESS_COMMANDS', 'OPKGLIBDIR']

    def _get_delayed_postinsts(self):
        status_file = os.path.join(self.image_rootfs,
                                   self.d.getVar('OPKGLIBDIR', True).strip('/'),
                                   "opkg", "status")
        return self._get_delayed_postinsts_common(status_file)

    def _save_postinsts(self):
        dst_postinst_dir = self.d.expand("${IMAGE_ROOTFS}${sysconfdir}/ipk-postinsts")
        src_postinst_dir = self.d.expand("${IMAGE_ROOTFS}${OPKGLIBDIR}/opkg/info")
        return self._save_postinsts_common(dst_postinst_dir, src_postinst_dir)

    def _handle_intercept_failure(self, registered_pkgs):
        self.pm.mark_packages("unpacked", registered_pkgs.split())

    def _log_check(self):
        self._log_check_warn()
        self._log_check_error()

    def _cleanup(self):
        self.pm.remove_lists()

def get_class_for_type(imgtype):
    return {"rpm": RpmRootfs,
            "ipk": OpkgRootfs,
            "deb": DpkgRootfs}[imgtype]

def variable_depends(d, manifest_dir=None):
    img_type = d.getVar('IMAGE_PKGTYPE', True)
    cls = get_class_for_type(img_type)
    return cls._depends_list()

def create_rootfs(d, manifest_dir=None, progress_reporter=None):
    env_bkp = os.environ.copy()

    img_type = d.getVar('IMAGE_PKGTYPE', True)
    if img_type == "rpm":
        RpmRootfs(d, manifest_dir, progress_reporter).create()
    elif img_type == "ipk":
        OpkgRootfs(d, manifest_dir, progress_reporter).create()
    elif img_type == "deb":
        DpkgRootfs(d, manifest_dir, progress_reporter).create()

    os.environ.clear()
    os.environ.update(env_bkp)


def image_list_installed_packages(d, rootfs_dir=None):
    if not rootfs_dir:
        rootfs_dir = d.getVar('IMAGE_ROOTFS', True)

    img_type = d.getVar('IMAGE_PKGTYPE', True)
    if img_type == "rpm":
        return RpmPkgsList(d, rootfs_dir).list_pkgs()
    elif img_type == "ipk":
        return OpkgPkgsList(d, rootfs_dir, d.getVar("IPKGCONF_TARGET", True)).list_pkgs()
    elif img_type == "deb":
        return DpkgPkgsList(d, rootfs_dir).list_pkgs()

if __name__ == "__main__":
    """
    We should be able to run this as a standalone script, from outside bitbake
    environment.
    """
    """
    TBD
    """