aboutsummaryrefslogtreecommitdiffstats
path: root/meta/lib/oe/rootfs.py
blob: 95c275875f12a01354748e0fef7ecf068a9ca540 (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
from abc import ABCMeta, abstractmethod
from oe.utils import execute_pre_post_process
from oe.utils import contains as base_contains
from oe.package_manager import *
from oe.manifest import *
import shutil
import os
import subprocess
import re


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

    def __init__(self, d):
        self.d = d
        self.pm = None
        self.image_rootfs = self.d.getVar('IMAGE_ROOTFS', True)
        self.deploy_dir_image = self.d.getVar('DEPLOY_DIR_IMAGE', True)

        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

    @abstractmethod
    def _insert_feed_uris(self):
        pass

    @abstractmethod
    def _handle_intercept_failure(self, failed_script):
        pass

    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)
        except subprocess.CalledProcessError as e:
            return("Command %s returned %d!" % (e.cmd, e.returncode))

        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)

        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.deploy_dir_image)

        shutil.copytree(self.d.expand("${COREBASE}/scripts/postinst-intercepts"),
                        intercepts_dir)

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

        execute_pre_post_process(self.d, pre_process_cmds)

        # 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")

        self._run_intercepts()

        execute_pre_post_process(self.d, post_process_cmds)

        if base_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)

        self._create_devfs()

        self._uninstall_uneeded()

        self._insert_feed_uris()

        self._run_ldconfig()

        self._generate_kernel_module_deps()

    def _uninstall_uneeded(self):
        if base_contains("IMAGE_FEATURES", "package-management",
                         True, False, self.d):
            return

        delayed_postinsts = self._get_delayed_postinsts()
        if delayed_postinsts is None:
            installed_pkgs_dir = self.d.expand('${WORKDIR}/installed_pkgs.txt')
            pkgs_to_remove = list()
            with open(installed_pkgs_dir, "r+") as installed_pkgs:
                pkgs_installed = installed_pkgs.read().split('\n')
                for pkg_installed in pkgs_installed[:]:
                    pkg = pkg_installed.split()[0]
                    if pkg in ["update-rc.d",
                               "base-passwd",
                               self.d.getVar("ROOTFS_BOOTSTRAP_INSTALL", True)
                               ]:
                        pkgs_to_remove.append(pkg)
                        pkgs_installed.remove(pkg_installed)

            if len(pkgs_to_remove) > 0:
                self.pm.remove(pkgs_to_remove, False)
                # Update installed_pkgs.txt
                open(installed_pkgs_dir, "w+").write('\n'.join(pkgs_installed))

            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"])
        else:
            self._save_postinsts()

        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
        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_output(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) is not None:
            bb.note("Executing: ldconfig -r" + self.image_rootfs + "-c new -v")
            self._exec_shell_cmd(['ldconfig', '-r', self.image_rootfs, '-c',
                                  'new', '-v'])

    def _generate_kernel_module_deps(self):
        kernel_abi_ver_file = os.path.join(self.d.getVar('STAGING_KERNEL_DIR', True),
                                           'kernel-abiversion')
        if os.path.exists(kernel_abi_ver_file):
            kernel_ver = open(kernel_abi_ver_file).read().strip(' \n')
            modules_dir = os.path.join(self.image_rootfs, 'lib', 'modules', kernel_ver)

            bb.utils.mkdirhier(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):
        super(RpmRootfs, self).__init__(d)

        self.manifest = RpmManifest(d, manifest_dir)

        package_archs = {
            'default': [],
        }
        target_os = {
            'default': "",
        }
        package_archs['default'] = self.d.getVar("PACKAGE_ARCHS", True).split()
        # arch order is reversed.  This ensures the -best- match is
        # listed first!
        package_archs['default'].reverse()
        target_os['default'] = self.d.getVar("TARGET_OS", True).strip()
        multilibs = self.d.getVar('MULTILIBS', True) or ""
        for ext in multilibs.split():
            eext = ext.split(':')
            if len(eext) > 1 and eext[0] == 'multilib':
                localdata = bb.data.createCopy(self.d)
                default_tune_key = "DEFAULTTUNE_virtclass-multilib-" + eext[1]
                default_tune = localdata.getVar(default_tune_key, False)
                if default_tune:
                    localdata.setVar("DEFAULTTUNE", default_tune)
                    bb.data.update_data(localdata)
                    package_archs[eext[1]] = localdata.getVar('PACKAGE_ARCHS',
                                                              True).split()
                    package_archs[eext[1]].reverse()
                    target_os[eext[1]] = localdata.getVar("TARGET_OS",
                                                          True).strip()

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

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

        self.pm.dump_all_available_pkgs()

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

        self.pm.update()

        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 == "aop"])

        self.pm.install_complementary()

        self._log_check()

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

        self.pm.rpm_setup_smart_target_config()

    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):
        r = re.compile('(unpacking of archive failed|Cannot find package|exit 1|ERR|Fail)')
        log_path = self.d.expand("${T}/log.do_rootfs")
        with open(log_path, 'r') as log:
            found_error = 0
            message = "\n"
            for line in log.read().split('\n'):
                if 'log_check' in line:
                    continue

                m = r.search(line)
                if m:
                    found_error = 1
                    bb.warn('log_check: There were error messages in the logfile')
                    bb.warn('log_check: Matched keyword: [%s]\n\n' % m.group())

                if found_error >= 1 and found_error <= 5:
                    message += line + '\n'
                    found_error += 1

                if found_error == 6:
                    bb.fatal(message)

    def _insert_feed_uris(self):
        pass

    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)


class DpkgRootfs(Rootfs):
    def __init__(self, d, manifest_dir):
        super(DpkgRootfs, self).__init__(d)

        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()

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

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

        self.pm.update()

        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])

        self.pm.install_complementary()

        self.pm.fix_broken_dependencies()

        self.pm.mark_packages("installed")

        self.pm.run_pre_post_installs()

    def _get_delayed_postinsts(self):
        pkg_list = []
        with open(self.image_rootfs + "/var/lib/dpkg/status") as status:
            for line in status:
                m_pkg = re.match("^Package: (.*)", line)
                m_status = re.match("^Status:.*unpacked", line)
                if m_pkg is not None:
                    pkg_name = m_pkg.group(1)
                elif m_status is not None:
                    pkg_list.append(pkg_name)

        if len(pkg_list) == 0:
            return None

        return pkg_list

    def _save_postinsts(self):
        num = 0
        for p in self._get_delayed_postinsts():
            dst_postinst_dir = self.d.expand("${IMAGE_ROOTFS}${sysconfdir}/deb-postinsts")
            src_postinst_dir = self.d.expand("${IMAGE_ROOTFS}/var/lib/dpkg/info")

            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

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

    def _log_check(self):
        pass

    def _insert_feed_uris(self):
        pass


class OpkgRootfs(Rootfs):
    def __init__(self, d, manifest_dir):
        super(OpkgRootfs, self).__init__(d)

        bb.utils.remove(self.image_rootfs, True)
        bb.utils.remove(self.d.getVar('MULTILIB_TEMP_ROOTFS', True), True)
        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.pm = OpkgPM(d, self.image_rootfs, self.opkg_conf, self.pkg_archs)

    """
    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):
        import filecmp

        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 not filecmp.cmp(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)

    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)
        rootfs_post_install_cmds = self.d.getVar('ROOTFS_POSTINSTALL_COMMAND', True)

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

        execute_pre_post_process(self.d, opkg_pre_process_cmds)

        self.pm.update()

        self.pm.handle_bad_recommendations()

        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])

        self.pm.install_complementary()

        execute_pre_post_process(self.d, opkg_post_process_cmds)
        execute_pre_post_process(self.d, rootfs_post_install_cmds)

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

        with open(status_file) as status:
            for line in status:
                m_pkg = re.match("^Package: (.*)", line)
                m_status = re.match("^Status:.*unpacked", line)
                if m_pkg is not None:
                    pkg_name = m_pkg.group(1)
                elif m_status is not None:
                    pkg_list.append(pkg_name)

        if len(pkg_list) == 0:
            return None

        return pkg_list

    def _save_postinsts(self):
        num = 0
        for p in self._get_delayed_postinsts():
            dst_postinst_dir = self.d.expand("${IMAGE_ROOTFS}${sysconfdir}/ipk-postinsts")
            src_postinst_dir = self.d.expand("${IMAGE_ROOTFS}${OPKGLIBDIR}/opkg/info")

            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

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

    def _log_check(self):
        pass

    def _insert_feed_uris(self):
        pass


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

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

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


def list_installed_packages(d, format=None, 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":
        package_archs = {
            'default': [],
        }
        target_os = {
            'default': "",
        }
        package_archs['default'] = d.getVar("PACKAGE_ARCHS", True).split()
        # arch order is reversed.  This ensures the -best- match is
        # listed first!
        package_archs['default'].reverse()
        target_os['default'] = d.getVar("TARGET_OS", True).strip()
        multilibs = d.getVar('MULTILIBS', True) or ""
        for ext in multilibs.split():
            eext = ext.split(':')
            if len(eext) > 1 and eext[0] == 'multilib':
                localdata = bb.data.createCopy(d)
                default_tune_key = "DEFAULTTUNE_virtclass-multilib-" + eext[1]
                default_tune = localdata.getVar(default_tune_key, False)
                if default_tune:
                    localdata.setVar("DEFAULTTUNE", default_tune)
                    bb.data.update_data(localdata)
                    package_archs[eext[1]] = localdata.getVar('PACKAGE_ARCHS',
                                                              True).split()
                    package_archs[eext[1]].reverse()
                    target_os[eext[1]] = localdata.getVar("TARGET_OS",
                                                          True).strip()

        return RpmPM(d,
                     rootfs_dir,
                     package_archs,
                     target_os,
                     d.getVar('TARGET_VENDOR', True)
                     ).list_installed(format)
    elif img_type == "ipk":
        return OpkgPM(d,
                      rootfs_dir,
                      d.getVar("IPKGCONF_TARGET", True),
                      d.getVar("ALL_MULTILIB_PACKAGE_ARCHS", True)
                      ).list_installed(format)
    elif img_type == "deb":
        return DpkgPM(d,
                      rootfs_dir,
                      d.getVar('PACKAGE_ARCHS', True),
                      d.getVar('DPKG_ARCH', True)
                      ).list_installed(format)

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