summaryrefslogtreecommitdiffstats
path: root/py/mock.py
blob: a09e6d849e5de29946e2b2d2ae6678993f9f7fd4 (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
#!/usr/bin/python -tt
# vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=python:textwidth=0:
# Originally written by Seth Vidal
# Sections taken from Mach by Thomas Vander Stichele
# Major reorganization and adaptation by Michael Brown
# Copyright (C) 2007 Michael E Brown <mebrown@michaels-house.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
"""
    usage:
           mock [options] {--init|--clean}
           mock [options] [--rebuild] /path/to/srpm(s)
           mock [options] {--shell|--chroot} <cmd>
           mock [options] --installdeps {SRPM|RPM}
           mock [options] --install PACKAGE
           mock [options] --copyin path [..path] destination
           mock [options] --copyout path [..path] destination
"""

# library imports
import ConfigParser
import grp
import logging
import logging.config
import os
import os.path
import pwd
import sys
import time
from optparse import OptionParser
from socket import gethostname

# all of the variables below are substituted by the build system
__VERSION__ = "unreleased_version"
SYSCONFDIR = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), "..", "etc")
PYTHONDIR = os.path.dirname(os.path.realpath(sys.argv[0]))
PKGPYTHONDIR = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), "mock")
MOCKCONFDIR = os.path.join(SYSCONFDIR, "mock")
# end build system subs

# import all mock.* modules after this.
sys.path.insert(0, PYTHONDIR)

# set up basic logging until config file can be read
FORMAT = "%(levelname)s: %(message)s"
logging.basicConfig(format=FORMAT, level=logging.WARNING)
log = logging.getLogger()

# our imports
import mock.exception
from mock.trace_decorator import traceLog, decorate
import mock.backend
import mock.uid
import mock.util

def command_parse(config_opts):
    """return options and args from parsing the command line"""
    parser = OptionParser(usage=__doc__, version=__VERSION__)

    # modes (basic commands)
    parser.add_option("--rebuild", action="store_const", const="rebuild",
                      dest="mode", default='rebuild',
                      help="rebuild the specified SRPM(s)")
    parser.add_option("--buildsrpm", action="store_const", const="buildsrpm",
                      dest="mode",
                      help="Build a SRPM from spec (--spec ...) and sources (--sources ...)")
    parser.add_option("--shell", action="store_const",
                      const="shell", dest="mode",
                      help="run the specified command interactively within the chroot."
                           " Default command: /bin/sh")
    parser.add_option("--chroot", action="store_const",
                      const="chroot", dest="mode",
                      help="run the specified command noninteractively within the chroot.")
    parser.add_option("--clean", action="store_const", const="clean",
                      dest="mode",
                      help="completely remove the specified chroot")
    parser.add_option("--init", action="store_const", const="init", dest="mode",
                      help="initialize the chroot, do not build anything")
    parser.add_option("--installdeps", action="store_const", const="installdeps",
                      dest="mode",
                      help="install build dependencies for a specified SRPM")
    parser.add_option("--install", action="store_const", const="install",
                      dest="mode",
                      help="install packages using yum")
    parser.add_option("--update", action="store_const", const="update",
                      dest="mode",
                      help="update installed packages using yum")
    parser.add_option("--orphanskill", action="store_const", const="orphanskill",
                      dest="mode",
                      help="Kill all processes using specified buildroot.")

    parser.add_option("--copyin", action="store_const", const="copyin",
                      dest="mode",
                      help="Copy file(s) into the specified chroot")

    parser.add_option("--copyout", action="store_const", const="copyout",
                      dest="mode",
                      help="Copy file(s) from the specified chroot")

    # options
    parser.add_option("-r", "--root", action="store", type="string", dest="chroot",
                      help="chroot name/config file name default: %default",
                      default='default')

    parser.add_option("--offline", action="store_false", dest="online",
                      default=True,
                      help="activate 'offline' mode.")

    parser.add_option("--no-clean", action ="store_false", dest="clean",
                      help="do not clean chroot before building", default=True)
    parser.add_option("--cleanup-after", action ="store_true",
                      dest="cleanup_after", default=None,
                      help="Clean chroot after building. Use with --resultdir."
                           " Only active for 'rebuild'.")
    parser.add_option("--no-cleanup-after", action ="store_false",
                      dest="cleanup_after", default=None,
                      help="Dont clean chroot after building. If automatic"
                           " cleanup is enabled, use this to disable.", )
    parser.add_option("--arch", action ="store", dest="arch",
                      default=None, help="Sets kernel personality().")
    parser.add_option("--target", action ="store", dest="rpmbuild_arch",
                      default=None, help="passed to rpmbuild as --target")
    parser.add_option("-D", "--define", action="append", dest="rpmmacros",
                      default=[], type="string", metavar="'MACRO EXPR'",
                      help="define an rpm macro (may be used more than once)")
    parser.add_option("--with", action="append", dest="rpmwith",
                      default=[], type="string", metavar="option",
                      help="enable configure option for build (may be used more than once)")
    parser.add_option("--without", action="append", dest="rpmwithout",
                      default=[], type="string", metavar="option",
                      help="disable configure option for build (may be used more than once)")
    parser.add_option("--resultdir", action="store", type="string",
                      default=None, help="path for resulting files to be put")
    parser.add_option("--uniqueext", action="store", type="string",
                      default=None,
                      help="Arbitrary, unique extension to append to buildroot"
                           " directory name")
    parser.add_option("--configdir", action="store", dest="configdir",
                      default=None,
                      help="Change where config files are found")
    parser.add_option("--rpmbuild_timeout", action="store",
                      dest="rpmbuild_timeout", type="int", default=None,
                      help="Fail build if rpmbuild takes longer than 'timeout'"
                           " seconds ")
    parser.add_option("--unpriv", action="store_true", default=False,
                      help="Drop privileges before running command when using --chroot")
    parser.add_option("--cwd", action="store", default=None,
                      metavar="DIR",
                      help="Change to the specified directory (relative to the chroot)"
                           " before running command when using --chroot")

    parser.add_option("--spec", action="store",
                    help="Specifies spec file to use to build an SRPM (used only with --buildsrpm)")
    parser.add_option("--sources", action="store",
                    help="Specifies sources to use to build an SRPM (used only with --buildsrpm)")

    # verbosity
    parser.add_option("-v", "--verbose", action="store_const", const=2,
                      dest="verbose", default=1, help="verbose build")
    parser.add_option("-q", "--quiet", action="store_const", const=0,
                      dest="verbose", help="quiet build")
    parser.add_option("--trace", action="store_true", default=False,
                      dest="trace", help="Enable internal mock tracing output.")

    # plugins
    parser.add_option("--enable-plugin", action="append",
                      dest="enabled_plugins", type="string", default=[],
                      help="Enable plugin. Currently-available plugins: %s"
                        % repr(config_opts['plugins']))
    parser.add_option("--disable-plugin", action="append",
                      dest="disabled_plugins", type="string", default=[],
                      help="Disable plugin. Currently-available plugins: %s"
                           % repr(config_opts['plugins']))

    parser.add_option("--print-root-path", help="print path to chroot root",
                      dest="printrootpath", action="store_true",
                      default=False)

    (options, args) = parser.parse_args()
    if len(args) and args[0] in ('chroot', 'shell',
            'rebuild', 'install', 'installdeps', 'init', 'clean'):
        options.mode = args[0]
        args = args[1:]

    return (options, args)

decorate(traceLog())
def setup_default_config_opts(config_opts, unprivUid):
    "sets up default configuration."
    # global
    config_opts['version'] = __VERSION__
    config_opts['basedir'] = '/var/lib/mock' # root name is automatically added to this
    config_opts['resultdir'] = '%(basedir)s/%(root)s/result'
    config_opts['cache_topdir'] = '/var/cache/mock'
    config_opts['clean'] = True
    config_opts['chroothome'] = '/builddir'
    config_opts['log_config_file'] = 'logging.ini'
    config_opts['rpmbuild_timeout'] = 0
    config_opts['chrootuid'] = unprivUid
    try:
        config_opts['chrootgid'] = grp.getgrnam("mock")[2]
    except KeyError:
        #  'mock' group doesnt exist, must set in config file
        pass
    config_opts['build_log_fmt_name'] = "unadorned"
    config_opts['root_log_fmt_name']  = "detailed"
    config_opts['state_log_fmt_name'] = "state"
    config_opts['online'] = True

    config_opts['internal_dev_setup'] = True
    config_opts['internal_setarch'] = True

    # cleanup_on_* only take effect for separate --resultdir
    # config_opts provides fine-grained control. cmdline only has big hammer
    config_opts['cleanup_on_success'] = 1
    config_opts['cleanup_on_failure'] = 1

    # (global) plugins and plugin configs.
    # ordering constraings: tmpfs must be first.
    #    root_cache next.
    #    after that, any plugins that must create dirs (yum_cache)
    #    any plugins without preinit hooks should be last.
    config_opts['plugins'] = ('tmpfs', 'root_cache', 'yum_cache', 'bind_mount', 'ccache')
    config_opts['plugin_dir'] = os.path.join(PKGPYTHONDIR, "plugins")
    config_opts['plugin_conf'] = {
            'ccache_enable': True,
            'ccache_opts': {
                'max_cache_size': "4G",
                'dir': "%(cache_topdir)s/%(root)s/ccache/"},
            'yum_cache_enable': True,
            'yum_cache_opts': {
                'max_age_days': 30,
                'max_metadata_age_days': 30,
                'dir': "%(cache_topdir)s/%(root)s/yum_cache/",
                'online': True,},
            'root_cache_enable': True,
            'root_cache_opts': {
                'max_age_days': 15,
                'dir': "%(cache_topdir)s/%(root)s/root_cache/",
                'compress_program': 'gzip',
                'extension': '.gz'},
            'bind_mount_enable': True,
            'bind_mount_opts': {'dirs': [
                # specify like this:
                # ('/host/path', '/bind/mount/path/in/chroot/' ),
                # ('/another/host/path', '/another/bind/mount/path/in/chroot/'),
                ]},
            'tmpfs_enable': False,
            'tmpfs_opts': {'required_ram_mb': 900},
            }

    # dependent on guest OS
    config_opts['useradd'] = \
        '/usr/sbin/useradd -o -m -u %(uid)s -g %(gid)s -d %(home)s -n %(user)s'
    config_opts['use_host_resolv'] = True
    config_opts['chroot_setup_cmd'] = 'groupinstall buildsys-build'
    config_opts['target_arch'] = 'i386'
    config_opts['rpmbuild_arch'] = None # <-- None means set automatically from target_arch
    config_opts['yum.conf'] = ''
    config_opts['more_buildreqs'] = {}
    config_opts['files'] = {}
    config_opts['macros'] = {
        '%_topdir': '%s/build' % config_opts['chroothome'],
        '%_rpmfilename': '%%{NAME}-%%{VERSION}-%%{RELEASE}.%%{ARCH}.rpm',
        }

decorate(traceLog())
def set_config_opts_per_cmdline(config_opts, options, args):
    "takes processed cmdline args and sets config options."
    # do some other options and stuff
    if options.arch:
        config_opts['target_arch'] = options.arch
    if options.rpmbuild_arch:
        config_opts['rpmbuild_arch'] = options.rpmbuild_arch
    elif config_opts['rpmbuild_arch'] is None:
        config_opts['rpmbuild_arch'] = config_opts['target_arch']

    if not options.clean:
        config_opts['clean'] = options.clean

    for option in options.rpmwith:
        options.rpmmacros.append("_with_%s 1" % option)

    for option in options.rpmwithout:
        options.rpmmacros.append("_without_%s 1" % option)

    for macro in options.rpmmacros:
        try:
            k, v = macro.split(" ", 1)
            if not k.startswith('%'):
                k = '%%%s' % k
            config_opts['macros'].update({k: v})
        except:
            raise mock.exception.BadCmdline(
                "Bad option for '--define' (%s).  Use --define 'macro expr'"
                % macro)

    if options.resultdir:
        config_opts['resultdir'] = os.path.expanduser(options.resultdir)
    if options.uniqueext:
        config_opts['unique-ext'] = options.uniqueext
    if options.rpmbuild_timeout is not None:
        config_opts['rpmbuild_timeout'] = options.rpmbuild_timeout

    for i in options.disabled_plugins:
        if i not in config_opts['plugins']:
            raise mock.exception.BadCmdline(
                "Bad option for '--disable-plugins=%s'. Expecting one of: %s"
                % (i, config_opts['plugins']))
        config_opts['plugin_conf']['%s_enable' % i] = False
    for i in options.enabled_plugins:
        if i not in config_opts['plugins']:
            raise mock.exception.BadCmdline(
                "Bad option for '--enable-plugins=%s'. Expecting one of: %s"
                % (i, config_opts['plugins']))
        config_opts['plugin_conf']['%s_enable' % i] = True

    if options.cleanup_after and not options.resultdir:
        raise mock.exception.BadCmdline(
            "Must specify --resultdir when using --cleanup-after")

    if options.mode in ("rebuild",) and len(args) > 1 and not options.resultdir:
        raise mock.exception.BadCmdline(
            "Must specify --resultdir when building multiple RPMS.")

    if options.cleanup_after == False:
        config_opts['cleanup_on_success'] = False
        config_opts['cleanup_on_failure'] = False

    if options.cleanup_after == True:
        config_opts['cleanup_on_success'] = True
        config_opts['cleanup_on_failure'] = True

    # cant cleanup unless separate resultdir
    if not options.resultdir:
        config_opts['cleanup_on_success'] = False
        config_opts['cleanup_on_failure'] = False

    config_opts['online'] = options.online

decorate(traceLog())
def do_rebuild(config_opts, chroot, srpms):
    "rebuilds a list of srpms using provided chroot"
    if len(srpms) < 1:
        log.critical("No package specified to rebuild command.")
        sys.exit(50)

    # check that everything is kosher. Raises exception on error
    for hdr in mock.util.yieldSrpmHeaders(srpms):
        pass

    start = time.time()
    try:
        for srpm in srpms:
            start = time.time()
            log.info("Start(%s)  Config(%s)" % (srpm, chroot.sharedRootName))
            if config_opts['clean'] and chroot.state() != "clean":
                chroot.clean()
            chroot.init()
            chroot.build(srpm, timeout=config_opts['rpmbuild_timeout'])
            elapsed = time.time() - start
            log.info("Done(%s) Config(%s) %d minutes %d seconds"
                % (srpm, config_opts['chroot_name'], elapsed//60, elapsed%60))
            log.info("Results and/or logs in: %s" % chroot.resultdir)

        if config_opts["cleanup_on_success"]:
            log.info("Cleaning up build root ('clean_on_success=True')")
            chroot.clean()
    except (Exception, KeyboardInterrupt):
        elapsed = time.time() - start
        log.error("Exception(%s) Config(%s) %d minutes %d seconds"
            % (srpm, chroot.sharedRootName, elapsed//60, elapsed%60))
        log.info("Results and/or logs in: %s" % chroot.resultdir)
        if config_opts["cleanup_on_failure"]:
            log.info("Cleaning up build root ('clean_on_failure=True')")
            chroot.clean()
        raise

def do_buildsrpm(config_opts, chroot, options, args):
    start = time.time()
    try:
        # TODO: validate spec path (exists)
        # TODO: validate SOURCES path (exists)

        log.info("Start(%s)  Config(%s)" % (os.path.basename(options.spec), chroot.sharedRootName))
        if config_opts['clean'] and chroot.state() != "clean":
            chroot.clean()
        chroot.init()

        chroot.buildsrpm(spec=options.spec, sources=options.sources, timeout=config_opts['rpmbuild_timeout'])

        elapsed = time.time() - start
        log.info("Done(%s) Config(%s) %d minutes %d seconds"
            % (os.path.basename(options.spec), config_opts['chroot_name'], elapsed//60, elapsed%60))
        log.info("Results and/or logs in: %s" % chroot.resultdir)

        if config_opts["cleanup_on_success"]:
            log.info("Cleaning up build root ('clean_on_success=True')")
            chroot.clean()

    except (Exception, KeyboardInterrupt):
        elapsed = time.time() - start
        log.error("Exception(%s) Config(%s) %d minutes %d seconds"
            % (os.path.basename(options.spec), chroot.sharedRootName, elapsed//60, elapsed%60))
        log.info("Results and/or logs in: %s" % chroot.resultdir)
        if config_opts["cleanup_on_failure"]:
            log.info("Cleaning up build root ('clean_on_failure=True')")
            chroot.clean()
        raise

def main(ret):
    "Main executable entry point."
    # drop unprivleged to parse args, etc.
    #   uidManager saves current real uid/gid which are unpriviledged (callers)
    #   due to suid helper, our current effective uid is 0
    #   also supports being run by sudo
    #
    #   setuid wrapper has real uid = unpriv,  effective uid = 0
    #   sudo sets real/effective = 0, and sets env vars
    #   setuid wrapper clears environment, so there wont be any conflict between these two

    # old setuid wrapper
    unprivUid = os.getuid()
    unprivGid = os.getgid()

    # sudo
    if os.environ.get("SUDO_UID") is not None:
        unprivUid = int(os.environ['SUDO_UID'])
        username = os.environ.get("SUDO_USER")
        groups = [ g[2] for g in grp.getgrall() if username in g[3]]
        os.setgroups(groups)
        unprivGid = int(os.environ['SUDO_GID'])

    # consolehelper
    if os.environ.get("USERHELPER_UID") is not None:
        unprivUid = int(os.environ['USERHELPER_UID'])
        username = pwd.getpwuid(unprivUid)[0]
        groups = [ g[2] for g in grp.getgrall() if username in g[3]]
        os.setgroups(groups)
        unprivGid = pwd.getpwuid(unprivUid)[3]

    uidManager = mock.uid.uidManager(unprivUid, unprivGid)
    uidManager._becomeUser(unprivUid, unprivGid)

    # defaults
    config_opts = {}
    setup_default_config_opts(config_opts, unprivUid)
    (options, args) = command_parse(config_opts)

    if options.printrootpath:
        options.verbose = 0

    # config path -- can be overridden on cmdline
    config_path = MOCKCONFDIR
    if options.configdir:
        config_path = options.configdir

    # array to save config paths
    config_opts['config_paths'] = []

    # Read in the config files: default, and then user specified
    for cfg in ( os.path.join(config_path, 'site-defaults.cfg'), '%s/%s.cfg' % (config_path, options.chroot)):
        if os.path.exists(cfg):
            config_opts['config_paths'].append(cfg)
            execfile(cfg)
        else:
            log.error("Could not find required config file: %s" % cfg)
            if options.chroot == "default": log.error("  Did you forget to specify the chroot to use with '-r'?")
            sys.exit(1)

    # configure logging
    config_opts['chroot_name'] = options.chroot
    log_ini = os.path.join(config_path, config_opts["log_config_file"])
    if not os.path.exists(log_ini):
        log.error("Could not find required logging config file: %s" % log_ini)
        sys.exit(50)
    try:
        if not os.path.exists(log_ini): raise IOError, "Could not find log config file %s" % log_ini
        log_cfg = ConfigParser.ConfigParser()
        logging.config.fileConfig(log_ini)
        log_cfg.read(log_ini)
    except (IOError, OSError, ConfigParser.NoSectionError), exc:
        log.error("Log config file(%s) not correctly configured: %s" % (log_ini, exc))
        sys.exit(50)

    try:
        # set up logging format strings
        config_opts['build_log_fmt_str'] = log_cfg.get("formatter_%s" % config_opts['build_log_fmt_name'], "format", raw=1)
        config_opts['root_log_fmt_str'] = log_cfg.get("formatter_%s" % config_opts['root_log_fmt_name'], "format", raw=1)
        config_opts['state_log_fmt_str'] = log_cfg.get("formatter_%s" % config_opts['state_log_fmt_name'], "format", raw=1)
    except ConfigParser.NoSectionError, exc:
        log.error("Log config file (%s) missing required section: %s" % (log_ini, exc))
        sys.exit(50)

    if options.verbose == 0:
        log.handlers[0].setLevel(logging.WARNING)
        logging.getLogger("mock.Root.state").handlers[0].setLevel(logging.WARNING)
    elif options.verbose == 1:
        log.handlers[0].setLevel(logging.INFO)
    elif options.verbose == 2:
        log.handlers[0].setLevel(logging.DEBUG)
        logging.getLogger("mock.Root.build").propagate = 1
        logging.getLogger("mock").propagate = 1

    logging.getLogger("trace").propagate=0
    if options.trace:
        logging.getLogger("trace").propagate=1

    # cmdline options override config options
    set_config_opts_per_cmdline(config_opts, options, args)

    # default /etc/hosts contents
    if not config_opts['use_host_resolv'] and not config_opts['files'].has_key('etc/hosts'):
        config_opts['files']['etc/hosts'] = "127.0.0.1 localhost localhost.localdomain %s\n" % gethostname();

    # elevate privs
    uidManager._becomeUser(0, 0)

    # do whatever we're here to do
    log.info("mock.py version %s starting..." % __VERSION__)
    chroot = mock.backend.Root(config_opts, uidManager)

    if options.printrootpath:
        print chroot.makeChrootPath('')
        sys.exit(0)

    # dump configuration to log
    log.debug("mock final configuration:")
    for k, v in config_opts.items():
        log.debug("    %s:  %s" % (k, v))

    ret["chroot"] = chroot
    ret["config_opts"] = config_opts
    os.umask(002)
    os.environ["HOME"] = chroot.homedir

    # New namespace starting from here
    try:
        mock.util.unshare(mock.util.CLONE_NEWNS)
    except:
        log.info("Namespace unshare failed.")

    # set personality (ie. setarch)
    if config_opts['internal_setarch']:
        mock.util.condPersonality(config_opts['target_arch'])

    if options.mode == 'init':
        if config_opts['clean']:
            chroot.clean()
        chroot.init()

    elif options.mode == 'clean':
        chroot.clean()

    elif options.mode == 'shell':
        chroot.tryLockBuildRoot()
        if not os.path.exists(chroot.makeChrootPath()):
            raise RuntimeError, "chroot %s not initialized!" % chroot.makeChrootPath()
        try:
            chroot._mountall()
            cmd = ' '.join(args)
            status = os.system("PS1='mock-chroot> ' /usr/sbin/chroot %s %s" % (chroot.makeChrootPath(), cmd))
            ret['exitStatus'] = os.WEXITSTATUS(status)

        finally:
            chroot._umountall()

    elif options.mode == 'chroot':
        shell=False
        if len(args) == 0:
            log.critical("You must specify a command to run")
            sys.exit(50)
        elif len(args) == 1:
            args = args[0]
            shell=True

        log.info("Running in chroot: %s" % args)
        chroot.tryLockBuildRoot()
        chroot._resetLogging()
        try:
            chroot._mountall()
            if options.unpriv:
                chroot.doChroot(args, shell=shell,
                                uid=chroot.chrootuid, gid=chroot.chrootgid, cwd=options.cwd)
            else:
                chroot.doChroot(args, shell=shell, cwd=options.cwd)
        finally:
            chroot._umountall()

    elif options.mode == 'installdeps':
        if len(args) == 0:
            log.critical("You must specify an SRPM file.")
            sys.exit(50)

        for hdr in mock.util.yieldSrpmHeaders(args, plainRpmOk=1):
            pass
        chroot.tryLockBuildRoot()
        try:
            chroot._mountall()
            chroot.installSrpmDeps(*args)
        finally:
            chroot._umountall()

    elif options.mode == 'install':
        if len(args) == 0:
            log.critical("You must specify a package list to install.")
            sys.exit(50)

        chroot.tryLockBuildRoot()
        chroot.yumInstall(*args)

    elif options.mode == 'update':
        chroot.yumUpdate()

    elif options.mode == 'rebuild':
        do_rebuild(config_opts, chroot, args)

    elif options.mode == 'buildsrpm':
        do_buildsrpm(config_opts, chroot, options, args)

    elif options.mode == 'orphanskill':
        mock.util.orphansKill(chroot.makeChrootPath())
    elif options.mode == 'copyin':
        chroot.tryLockBuildRoot()
        chroot._resetLogging()
        #uidManager.dropPrivsForever()
        if len(args) < 2:
            log.critical("Must have source and destinations for copyin")
            sys.exit(50)
        dest = chroot.makeChrootPath(args[-1])
        if len(args) > 2 and not os.path.isdir(dest):
            log.critical("multiple source files and %s is not a directory!" % dest)
            sys.exit(50)
        args = args[:-1]
        import shutil
        for src in args:
            log.debug("copying %s to %s" % (src, dest))
            if os.path.isdir(src):
                shutil.copytree(src, dest)
            else:
                shutil.copy(src, dest)
    elif options.mode == 'copyout':
        chroot.tryLockBuildRoot()
        chroot._resetLogging()
        uidManager.dropPrivsForever()
        if len(args) < 2:
            log.critical("Must have source and destinations for copyout")
            sys.exit(50)
        dest = args[-1]
        if len(args) > 2 and not os.path.isdir(dest):
            log.critical("multiple source files and %s is not a directory!" % dest)
            sys.exit(50)
        args = args[:-1]
        import shutil
        for f in args:
            src = chroot.makeChrootPath(f)
            log.debug("copying %s to %s" % (src, dest))
            if os.path.isdir(src):
                shutil.copytree(src, dest)
            else:
                shutil.copy(src, dest)

if __name__ == '__main__':
    # fix for python 2.4 logging module bug:
    logging.raiseExceptions = 0

    exitStatus = 0
    killOrphans = 1

    try:
        # sneaky way to ensure that we get passed back parameter even if
        # we hit an exception.
        retParams = {}
        main(retParams)
        exitStatus = retParams.get("exitStatus", exitStatus)

    except (SystemExit,):
        raise

    except (OSError,), e:
        if e.errno == 1:
            print
            log.error("%s" % str(e))
            print
            log.error("The most common cause for this error is trying to run /usr/sbin/mock as an unprivileged user.")
            log.error("Check your path to make sure that /usr/bin/ is listed before /usr/sbin, or manually run /usr/bin/mock to see if that fixes this problem.")
            print
        else:
            raise

    except (KeyboardInterrupt,):
        exitStatus = 7
        log.error("Exiting on user interrupt, <CTRL>-C")

    except (mock.exception.ResultDirNotAccessible,), exc:
        exitStatus = exc.resultcode
        log.error(str(exc))
        killOrphans = 0

    except (mock.exception.BadCmdline, mock.exception.BuildRootLocked), exc:
        exitStatus = exc.resultcode
        log.error(str(exc))
        killOrphans = 0

    except (mock.exception.Error), exc:
        exitStatus = exc.resultcode
        log.error(str(exc))

    except (Exception,), exc:
        exitStatus = 1
        log.exception(exc)

    if killOrphans and retParams:
        mock.util.orphansKill(retParams["chroot"].makeChrootPath())

    logging.shutdown()
    sys.exit(exitStatus)