forked from mariux/systemd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
NEWS
2403 lines (1859 loc) · 110 KB
/
NEWS
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
systemd System and Service Manager
CHANGES WITH 208:
* logind has gained support for facilitating privileged input
and drm device access for unprivileged clients. This work is
useful to allow Wayland display servers (and similar
programs, such as kmscon) to run under the user's ID and
access input and drm devices which are normally
protected. When this is used (and the kernel is new enough)
logind will "mute" IO on the file descriptors passed to
Wayland as long as it is in the background and "unmute" it
if it returns into the foreground. This allows secure
session switching without allowing background sessions to
eavesdrop on input and display data. This also introduces
session switching support if VT support is turned off in the
kernel, and on seats that are not seat0.
* A new kernel command line option luks.options= is understood
now which allows specifiying LUKS options for usage for LUKS
encrypted partitions specified with luks.uuid=.
* tmpfiles.d(5) snippets may now use specifier expansion in
path names. More specifically %m, %b, %H, %v, are now
replaced by the local machine id, boot id, hostname, and
kernel version number.
* A new tmpfiles.d(5) command "m" has been introduced which
may be used to change the owner/group/access mode of a file
or directory if it exists, but do nothing if it doesn't.
* This release removes high-level support for the
MemorySoftLimit= cgroup setting. The underlying kernel
cgroup attribute memory.soft_limit= is currently badly
designed and likely to be removed from the kernel API in its
current form, hence we shouldn't expose it for now.
* The memory.use_hierarchy cgroup attribute is now enabled for
all cgroups systemd creates in the memory cgroup
hierarchy. This option is likely to be come the built-in
default in the kernel anyway, and the non-hierarchial mode
never made much sense in the intrinsically hierarchial
cgroup system.
* A new field _SYSTEMD_SLICE= is logged along with all journal
messages containing the slice a message was generated
from. This is useful to allow easy per-customer filtering of
logs among other things.
* systemd-journald will no longer adjust the group of journal
files it creates to the "systemd-journal" group. Instead we
rely on the journal directory to be owned by the
"systemd-journal" group, and its setgid bit set, so that the
kernel file system layer will automatically enforce that
journal files inherit this group assignment. The reason for
this change is that we cannot allow NSS look-ups from
journald which would be necessary to resolve
"systemd-journal" to a numeric GID, because this might
create deadlocks if NSS involves synchronous queries to
other daemons (such as nscd, or sssd) which in turn are
logging clients of journald and might block on it, which
would then dead lock. A tmpfiles.d(5) snippet included in
systemd will make sure the setgid bit and group are
properly set on the journal directory if it exists on every
boot. However, we recommend adjusting it manually after
upgrades too (or from RPM scriptlets), so that the change is
not delayed until next reboot.
* Backlight and random seed files in /var/lib/ have moved into
the /var/lib/systemd/ directory, in order to centralize all
systemd generated files in one directory.
* Boot time performance measurements (as displayed by
"systemd-analyze" for example) will now read ACPI 5.0 FPDT
performance information if that's available to determine how
much time BIOS and boot loader initialization required. With
a sufficiently new BIOS you hence no longer need to boot
with Gummiboot to get access to such information.
Contributions from: Andrey Borzenkov, Chen Jie, Colin Walters,
Cristian Rodríguez, Dave Reisner, David Herrmann, David
Mackey, David Strauss, Eelco Dolstra, Evan Callicoat, Gao
feng, Harald Hoyer, Jimmie Tauriainen, Kay Sievers, Lennart
Poettering, Lukas Nykryn, Mantas Mikulėnas, Martin Pitt,
Michael Scherer, Michał Górny, Mike Gilbert, Patrick McCarty,
Sebastian Ott, Tom Gundersen, Zbigniew Jędrzejewski-Szmek
-- Berlin, 2013-10-02
CHANGES WITH 207:
* The Restart= option for services now understands a new
on-watchdog setting, which will restart the service
automatically if the service stops sending out watchdog keep
alive messages (as configured with WatchdogSec=).
* The getty generator (which is responsible for bringing up a
getty on configured serial consoles) will no longer only
start a getty on the primary kernel console but on all
others, too. This makes the order in which console= is
specified on the kernel command line less important.
* libsystemd-logind gained a new sd_session_get_vt() call to
retrieve the VT number of a session.
* If the option "tries=0" is set for an entry of /etc/crypttab
its passphrase is queried indefinitely instead of any
maximum number of tries.
* If a service with a configure PID file terminates its PID
file will now be removed automatically if it still exists
afterwards. This should put an end to stale PID files.
* systemd-run will now also take relative binary path names
for execution and no longer insists on absolute paths.
* InaccessibleDirectories= and ReadOnlyDirectories= now take
paths that are optionally prefixed with "-" to indicate that
it should not be considered a failure if they don't exist.
* journalctl -o (and similar commands) now understands a new
output mode "short-precise", it is similar to "short" but
shows timestamps with usec accuracy.
* The option "discard" (as known from Debian) is now
synonymous to "allow-discards" in /etc/crypttab. In fact,
"discard" is preferred now (since it is easier to remember
and type).
* Some licensing clean-ups were made, so that more code is now
LGPL-2.1 licensed than before.
* A minimal tool to save/restore the display backlight
brightness across reboots has been added. It will store the
backlight setting as late as possible at shutdown, and
restore it as early as possible during reboot.
* A logic to automatically discover and enable home and swap
partitions on GPT disks has been added. With this in place
/etc/fstab becomes optional for many setups as systemd can
discover certain partitions located on the root disk
automatically. Home partitions are recognized under their
GPT type ID 933ac7e12eb44f13b8440e14e2aef915. Swap
partitions are recognized under their GPT type ID
0657fd6da4ab43c484e50933c84b4f4f.
* systemd will no longer pass any environment from the kernel
or initrd to system services. If you want to set an
environment for all services, do so via the kernel command
line systemd.setenv= assignment.
* The systemd-sysctl tool no longer natively reads the file
/etc/sysctl.conf. If desired, the file should be symlinked
from /etc/sysctl.d/99-sysctl.conf. Apart from providing
legacy support by a symlink rather than built-in code, it
also makes the otherwise hidden order of application of the
different files visible. (Note that this partly reverts to a
pre-198 application order of sysctl knobs!)
* The "systemctl set-log-level" and "systemctl dump" commands
have been moved to systemd-analyze.
* systemd-run learned the new --remain-after-exit switch,
which causes the scope unit not to be cleaned up
automatically after the process terminated.
* tmpfiles learned a new --exclude-prefix= switch to exclude
certain paths from operation.
* journald will now automatically flush all messages to disk
as soon as a message of the log priorities CRIT, ALERT or
EMERG is received.
Contributions from: Andrew Cook, Brandon Philips, Christian
Hesse, Christoph Junghans, Colin Walters, Daniel Schaal,
Daniel Wallace, Dave Reisner, David Herrmann, Gao feng, George
McCollister, Giovanni Campagna, Hannes Reinecke, Harald Hoyer,
Herczeg Zsolt, Holger Hans Peter Freyther, Jan Engelhardt,
Jesper Larsen, Kay Sievers, Khem Raj, Lennart Poettering,
Lukas Nykryn, Maciej Wereski, Mantas Mikulėnas, Marcel
Holtmann, Martin Pitt, Michael Biebl, Michael Marineau,
Michael Scherer, Michael Stapelberg, Michal Sekletar, Michał
Górny, Olivier Brunel, Ondrej Balaz, Ronny Chevalier, Shawn
Landden, Steven Hiscocks, Thomas Bächler, Thomas Hindoe
Paaboel Andersen, Tom Gundersen, Umut Tezduyar, WANG Chao,
William Giokas, Zbigniew Jędrzejewski-Szmek
-- Berlin, 2013-09-13
CHANGES WITH 206:
* The documentation has been updated to cover the various new
concepts introduced with 205.
* Unit files now understand the new %v specifier which
resolves to the kernel version string as returned by "uname
-r".
* systemctl now supports filtering the unit list output by
load state, active state and sub state, using the new
--state= parameter.
* "systemctl status" will now show the results of the
condition checks (like ConditionPathExists= and similar) of
the last start attempts of the unit. They are also logged to
the journal.
* "journalctl -b" may now be used to look for boot output of a
specific boot. Try "journalctl -b -1" for the previous boot,
but the syntax is substantially more powerful.
* "journalctl --show-cursor" has been added which prints the
cursor string the last shown log line. This may then be used
with the new "journalctl --after-cursor=" switch to continue
browsing logs from that point on.
* "journalctl --force" may now be used to force regeneration
of an FSS key.
* Creation of "dead" device nodes has been moved from udev
into kmod and tmpfiles. Previously, udev would read the kmod
databases to pre-generate dead device nodes based on meta
information contained in kernel modules, so that these would
be auto-loaded on access rather then at boot. As this
doesn't really have much to do with the exposing actual
kernel devices to userspace this has always been slightly
alien in the udev codebase. Following the new scheme kmod
will now generate a runtime snippet for tmpfiles from the
module meta information and it now is tmpfiles' job to the
create the nodes. This also allows overriding access and
other parameters for the nodes using the usual tmpfiles
facilities. As side effect this allows us to remove the
CAP_SYS_MKNOD capability bit from udevd entirely.
* logind's device ACLs may now be applied to these "dead"
devices nodes too, thus finally allowing managed access to
devices such as /dev/snd/sequencer whithout loading the
backing module right-away.
* A new RPM macro has been added that may be used to apply
tmpfiles configuration during package installation.
* systemd-detect-virt and ConditionVirtualization= now can
detect User-Mode-Linux machines (UML).
* journald will now implicitly log the effective capabilities
set of processes in the message metadata.
* systemd-cryptsetup has gained support for TrueCrypt volumes.
* The initrd interface has been simplified (more specifically,
support for passing performance data via environment
variables and fsck results via files in /run has been
removed). These features were non-essential, and are
nowadays available in a much nicer way by having systemd in
the initrd serialize its state and have the hosts systemd
deserialize it again.
* The udev "keymap" data files and tools to apply keyboard
specific mappings of scan to key codes, and force-release
scan code lists have been entirely replaced by a udev
"keyboard" builtin and a hwdb data file.
* systemd will now honour the kernel's "quiet" command line
argument also during late shutdown, resulting in a
completely silent shutdown when used.
* There's now an option to control the SO_REUSEPORT socket
option in .socket units.
* Instance units will now automatically get a per-template
subslice of system.slice unless something else is explicitly
configured. For example, instances of sshd@.service will now
implicitly be placed in system-sshd.slice rather than
system.slice as before.
* Test coverage support may now be enabled at build time.
Contributions from: Dave Reisner, Frederic Crozat, Harald
Hoyer, Holger Hans Peter Freyther, Jan Engelhardt, Jan
Janssen, Jason St. John, Jesper Larsen, Kay Sievers, Lennart
Poettering, Lukas Nykryn, Maciej Wereski, Martin Pitt, Michael
Olbrich, Ramkumar Ramachandra, Ross Lagerwall, Shawn Landden,
Thomas H.P. Andersen, Tom Gundersen, Tomasz Torcz, William
Giokas, Zbigniew Jędrzejewski-Szmek
-- Berlin, 2013-07-23
CHANGES WITH 205:
* Two new unit types have been introduced:
Scope units are very similar to service units, however, are
created out of pre-existing processes -- instead of PID 1
forking off the processes. By using scope units it is
possible for system services and applications to group their
own child processes (worker processes) in a powerful way
which then maybe used to organize them, or kill them
together, or apply resource limits on them.
Slice units may be used to partition system resources in an
hierarchial fashion and then assign other units to them. By
default there are now three slices: system.slice (for all
system services), user.slice (for all user sessions),
machine.slice (for VMs and containers).
Slices and scopes have been introduced primarily in
context of the work to move cgroup handling to a
single-writer scheme, where only PID 1
creates/removes/manages cgroups.
* There's a new concept of "transient" units. In contrast to
normal units these units are created via an API at runtime,
not from configuration from disk. More specifically this
means it is now possible to run arbitrary programs as
independent services, with all execution parameters passed
in via bus APIs rather than read from disk. Transient units
make systemd substantially more dynamic then it ever was,
and useful as a general batch manager.
* logind has been updated to make use of scope and slice units
for managing user sessions. As a user logs in he will get
his own private slice unit, to which all sessions are added
as scope units. We also added support for automatically
adding an instance of user@.service for the user into the
slice. Effectively logind will no longer create cgroup
hierarchies on its own now, it will defer entirely to PID 1
for this by means of scope, service and slice units. Since
user sessions this way become entities managed by PID 1
the output of "systemctl" is now a lot more comprehensive.
* A new mini-daemon "systemd-machined" has been added which
may be used by virtualization managers to register local
VMs/containers. nspawn has been updated accordingly, and
libvirt will be updated shortly. machined will collect a bit
of meta information about the VMs/containers, and assign
them their own scope unit (see above). The collected
meta-data is then made available via the "machinectl" tool,
and exposed in "ps" and similar tools. machined/machinectl
is compile-time optional.
* As discussed earlier, the low-level cgroup configuration
options ControlGroup=, ControlGroupModify=,
ControlGroupPersistent=, ControlGroupAttribute= have been
removed. Please use high-level attribute settings instead as
well as slice units.
* A new bus call SetUnitProperties() has been added to alter
various runtime parameters of a unit. This is primarily
useful to alter cgroup parameters dynamically in a nice way,
but will be extended later on to make more properties
modifiable at runtime. systemctl gained a new set-properties
command that wraps this call.
* A new tool "systemd-run" has been added which can be used to
run arbitrary command lines as transient services or scopes,
while configuring a number of settings via the command
line. This tool is currently very basic, however already
very useful. We plan to extend this tool to even allow
queuing of execution jobs with time triggers from the
command line, similar in fashion to "at".
* nspawn will now inform the user explicitly that kernels with
audit enabled break containers, and suggest the user to turn
off audit.
* Support for detecting the IMA and AppArmor security
frameworks with ConditionSecurity= has been added.
* journalctl gained a new "-k" switch for showing only kernel
messages, mimicking dmesg output; in addition to "--user"
and "--system" switches for showing only user's own logs
and system logs.
* systemd-delta can now show information about drop-in
snippets extending unit files.
* libsystemd-bus has been substantially updated but is still
not available as public API.
* systemd will now look for the "debug" argument on the kernel
command line and enable debug logging, similar to
"systemd.log_level=debug" already did before.
* "systemctl set-default", "systemctl get-default" has been
added to configure the default.target symlink, which
controls what to boot into by default.
* "systemctl set-log-level" has been added as a convenient
way to raise and lower systemd logging threshold.
* "systemd-analyze plot" will now show the time the various
generators needed for execution, as well as information
about the unit file loading.
* libsystemd-journal gained a new sd_journal_open_files() call
for opening specific journal files. journactl also gained a
new switch to expose this new functionality. Previously we
only supported opening all files from a directory, or all
files from the system, as opening individual files only is
racy due to journal file rotation.
* systemd gained the new DefaultEnvironment= setting in
/etc/systemd/system.conf to set environment variables for
all services.
* If a privileged process logs a journal message with the
OBJECT_PID= field set, then journald will automatically
augment this with additional OBJECT_UID=, OBJECT_GID=,
OBJECT_COMM=, OBJECT_EXE=, ... fields. This is useful if
system services want to log events about specific client
processes. journactl/systemctl has been updated to make use
of this information if all log messages regarding a specific
unit is requested.
Contributions from: Auke Kok, Chengwei Yang, Colin Walters,
Cristian Rodríguez, Daniel Albers, Daniel Wallace, Dave
Reisner, David Coppa, David King, David Strauss, Eelco
Dolstra, Gabriel de Perthuis, Harald Hoyer, Jan Alexander
Steffens, Jan Engelhardt, Jan Janssen, Jason St. John, Johan
Heikkilä, Karel Zak, Karol Lewandowski, Kay Sievers, Lennart
Poettering, Lukas Nykryn, Mantas Mikulėnas, Marius Vollmer,
Martin Pitt, Michael Biebl, Michael Olbrich, Michael Tremer,
Michal Schmidt, Michał Bartoszkiewicz, Nirbheek Chauhan,
Pierre Neidhardt, Ross Burton, Ross Lagerwall, Sean McGovern,
Thomas Hindoe Paaboel Andersen, Tom Gundersen, Umut Tezduyar,
Václav Pavlín, Zachary Cook, Zbigniew Jędrzejewski-Szmek,
Łukasz Stelmach, 장동준
CHANGES WITH 204:
* The Python bindings gained some minimal support for the APIs
exposed by libsystemd-logind.
* ConditionSecurity= gained support for detecting SMACK. Since
this condition already supports SELinux and AppArmor we only
miss IMA for this. Patches welcome!
Contributions from: Karol Lewandowski, Lennart Poettering,
Zbigniew Jędrzejewski-Szmek
CHANGES WITH 203:
* systemd-nspawn will now create /etc/resolv.conf if
necessary, before bind-mounting the host's file onto it.
* systemd-nspawn will now store meta information about a
container on the container's cgroup as extended attribute
fields, including the root directory.
* The cgroup hierarchy has been reworked in many ways. All
objects any of the components systemd creates in the cgroup
tree are now suffixed. More specifically, user sessions are
now placed in cgroups suffixed with ".session", users in
cgroups suffixed with ".user", and nspawn containers in
cgroups suffixed with ".nspawn". Furthermore, all cgroup
names are now escaped in a simple scheme to avoid collision
of userspace object names with kernel filenames. This work
is preparation for making these objects relocatable in the
cgroup tree, in order to allow easy resource partitioning of
these objects without causing naming conflicts.
* systemctl list-dependencies gained the new switches
--plain, --reverse, --after and --before.
* systemd-inhibit now shows the process name of processes that
have taken an inhibitor lock.
* nss-myhostname will now also resolve "localhost"
implicitly. This makes /etc/hosts an optional file and
nicely handles that on IPv6 ::1 maps to both "localhost" and
the local hostname.
* libsystemd-logind.so gained a new call
sd_get_machine_names() to enumerate running containers and
VMs (currently only supported by very new libvirt and
nspawn). sd_login_monitor can now be used to watch
VMs/containers coming and going.
* .include is not allowed recursively anymore, and only in
unit files. Usually it is better to use drop-in snippets in
.d/*.conf anyway, as introduced with systemd 198.
* systemd-analyze gained a new "critical-chain" command that
determines the slowest chain of units run during system
boot-up. It is very useful for tracking down where
optimizing boot time is the most beneficial.
* systemd will no longer allow manipulating service paths in
the name=systemd:/system cgroup tree using ControlGroup= in
units. (But is still fine with it in all other dirs.)
* There's a new systemd-nspawn@.service service file that may
be used to easily run nspawn containers as system
services. With the container's root directory in
/var/lib/container/foobar it is now sufficient to run
"systemctl start systemd-nspawn@foobar.service" to boot it.
* systemd-cgls gained a new parameter "--machine" to list only
the processes within a certain container.
* ConditionSecurity= now can check for "apparmor". We still
are lacking checks for SMACK and IMA for this condition
check though. Patches welcome!
* A new configuration file /etc/systemd/sleep.conf has been
added that may be used to configure which kernel operation
systemd is supposed to execute when "suspend", "hibernate"
or "hybrid-sleep" is requested. This makes the new kernel
"freeze" state accessible to the user.
* ENV{SYSTEMD_WANTS} in udev rules will now implicitly escape
the passed argument if applicable.
Contributions from: Auke Kok, Colin Guthrie, Colin Walters,
Cristian Rodríguez, Daniel Buch, Daniel Wallace, Dave Reisner,
Evangelos Foutras, Greg Kroah-Hartman, Harald Hoyer, Josh
Triplett, Kay Sievers, Lennart Poettering, Lukas Nykryn,
MUNEDA Takahiro, Mantas Mikulėnas, Mirco Tischler, Nathaniel
Chen, Nirbheek Chauhan, Ronny Chevalier, Ross Lagerwall, Tom
Gundersen, Umut Tezduyar, Ville Skyttä, Zbigniew
Jędrzejewski-Szmek
CHANGES WITH 202:
* The output of 'systemctl list-jobs' got some polishing. The
'--type=' argument may now be passed more than once. A new
command 'systemctl list-sockets' has been added which shows
a list of kernel sockets systemd is listening on with the
socket units they belong to, plus the units these socket
units activate.
* The experimental libsystemd-bus library got substantial
updates to work in conjunction with the (also experimental)
kdbus kernel project. It works well enough to exchange
messages with some sophistication. Note that kdbus is not
ready yet, and the library is mostly an elaborate test case
for now, and not installable.
* systemd gained a new unit 'systemd-static-nodes.service'
that generates static device nodes earlier during boot, and
can run in conjunction with udev.
* libsystemd-login gained a new call sd_pid_get_user_unit()
to retrieve the user systemd unit a process is running
in. This is useful for systems where systemd is used as
session manager.
* systemd-nspawn now places all containers in the new /machine
top-level cgroup directory in the name=systemd
hierarchy. libvirt will soon do the same, so that we get a
uniform separation of /system, /user and /machine for system
services, user processes and containers/virtual
machines. This new cgroup hierarchy is also useful to stick
stable names to specific container instances, which can be
recognized later this way (this name may be controlled
via systemd-nspawn's new -M switch). libsystemd-login also
gained a new call sd_pid_get_machine_name() to retrieve the
name of the container/VM a specific process belongs to.
* bootchart can now store its data in the journal.
* libsystemd-journal gained a new call
sd_journal_add_conjunction() for AND expressions to the
matching logic. This can be used to express more complex
logical expressions.
* journactl can now take multiple --unit= and --user-unit=
switches.
* The cryptsetup logic now understands the "luks.key=" kernel
command line switch for specifying a file to read the
decryption key from. Also, if a configured key file is not
found the tool will now automatically fall back to prompting
the user.
* Python systemd.journal module was updated to wrap recently
added functions from libsystemd-journal. The interface was
changed to bring the low level interface in s.j._Reader
closer to the C API, and the high level interface in
s.j.Reader was updated to wrap and convert all data about
an entry.
Contributions from: Anatol Pomozov, Auke Kok, Harald Hoyer,
Henrik Grindal Bakken, Josh Triplett, Kay Sievers, Lennart
Poettering, Lukas Nykryn, Mantas Mikulėnas Marius Vollmer,
Martin Jansa, Martin Pitt, Michael Biebl, Michal Schmidt,
Mirco Tischler, Pali Rohar, Simon Peeters, Steven Hiscocks,
Tom Gundersen, Zbigniew Jędrzejewski-Szmek
CHANGES WITH 201:
* journalctl --update-catalog now understands a new --root=
option to operate on catalogs found in a different root
directory.
* During shutdown after systemd has terminated all running
services a final killing loop kills all remaining left-over
processes. We will now print the name of these processes
when we send SIGKILL to them, since this usually indicates a
problem.
* If /etc/crypttab refers to password files stored on
configured mount points automatic dependencies will now be
generated to ensure the specific mount is established first
before the key file is attempted to be read.
* 'systemctl status' will now show information about the
network sockets a socket unit is listening on.
* 'systemctl status' will also shown information about any
drop-in configuration file for units. (Drop-In configuration
files in this context are files such as
/etc/systemd/systemd/foobar.service.d/*.conf)
* systemd-cgtop now optionally shows summed up CPU times of
cgroups. Press '%' while running cgtop to switch between
percentage and absolute mode. This is useful to determine
which cgroups use up the most CPU time over the entire
runtime of the system. systemd-cgtop has also been updated
to be 'pipeable' for processing with further shell tools.
* 'hostnamectl set-hostname' will now allow setting of FQDN
hostnames.
* The formatting and parsing of time span values has been
changed. The parser now understands fractional expressions
such as "5.5h". The formatter will now output fractional
expressions for all time spans under 1min, i.e. "5.123456s"
rather than "5s 123ms 456us". For time spans under 1s
millisecond values are shown, for those under 1ms
microsecond values are shown. This should greatly improve
all time-related output of systemd.
* libsystemd-login and libsystemd-journal gained new
functions for querying the poll() events mask and poll()
timeout value for integration into arbitrary event
loops.
* localectl gained the ability to list available X11 keymaps
(models, layouts, variants, options).
* 'systemd-analyze dot' gained the ability to filter for
specific units via shell-style globs, to create smaller,
more useful graphs. I.e. it's now possible to create simple
graphs of all the dependencies between only target units, or
of all units that Avahi has dependencies with.
Contributions from: Cristian Rodríguez, Dr. Tilmann Bubeck,
Harald Hoyer, Holger Hans Peter Freyther, Kay Sievers, Kelly
Anderson, Koen Kooi, Lennart Poettering, Maksim Melnikau,
Marc-Antoine Perennou, Marius Vollmer, Martin Pitt, Michal
Schmidt, Oleksii Shevchuk, Ronny Chevalier, Simon McVittie,
Steven Hiscocks, Thomas Weißschuh, Umut Tezduyar, Václav
Pavlín, Zbigniew Jędrzejewski-Szmek, Łukasz Stelmach
CHANGES WITH 200:
* The boot-time readahead implementation for rotating media
will now read the read-ahead data in multiple passes which
consist of all read requests made in equidistant time
intervals. This means instead of strictly reading read-ahead
data in its physical order on disk we now try to find a
middle ground between physical and access time order.
* /etc/os-release files gained a new BUILD_ID= field for usage
on operating systems that provide continuous builds of OS
images.
Contributions from: Auke Kok, Eelco Dolstra, Kay Sievers,
Lennart Poettering, Lukas Nykryn, Martin Pitt, Václav Pavlín
William Douglas, Zbigniew Jędrzejewski-Szmek
CHANGES WITH 199:
* systemd-python gained an API exposing libsystemd-daemon.
* The SMACK setup logic gained support for uploading CIPSO
security policy.
* Behaviour of PrivateTmp=, ReadWriteDirectories=,
ReadOnlyDirectories= and InaccessibleDirectories= has
changed. The private /tmp and /var/tmp directories are now
shared by all processes of a service (which means
ExecStartPre= may now leave data in /tmp that ExecStart= of
the same service can still access). When a service is
stopped its temporary directories are immediately deleted
(normal clean-up with tmpfiles is still done in addition to
this though).
* By default, systemd will now set a couple of sysctl
variables in the kernel: the safe sysrq options are turned
on, IP route verification is turned on, and source routing
disabled. The recently added hardlink and softlink
protection of the kernel is turned on. These settings should
be reasonably safe, and good defaults for all new systems.
* The predictable network naming logic may now be turned off
with a new kernel command line switch: net.ifnames=0.
* A new libsystemd-bus module has been added that implements a
pretty complete D-Bus client library. For details see:
http://lists.freedesktop.org/archives/systemd-devel/2013-March/009797.html
* journald will now explicitly flush the journal files to disk
at the latest 5min after each write. The file will then also
be marked offline until the next write. This should increase
reliability in case of a crash. The synchronization delay
can be configured via SyncIntervalSec= in journald.conf.
* There's a new remote-fs-setup.target unit that can be used
to pull in specific services when at least one remote file
system is to be mounted.
* There are new targets timers.target and paths.target as
canonical targets to pull user timer and path units in
from. This complements sockets.target with a similar
purpose for socket units.
* libudev gained a new call udev_device_set_attribute_value()
to set sysfs attributes of a device.
* The udev daemon now sets the default number of worker
processes executed in parallel based on the number of available
CPUs instead of the amount of available RAM. This is supposed
to provide a more reliable default and limit a too aggressive
paralellism for setups with 1000s of devices connected.
Contributions from: Auke Kok, Colin Walters, Cristian
Rodríguez, Daniel Buch, Dave Reisner, Frederic Crozat, Hannes
Reinecke, Harald Hoyer, Jan Alexander Steffens, Jan
Engelhardt, Josh Triplett, Kay Sievers, Lennart Poettering,
Mantas Mikulėnas, Martin Pitt, Mathieu Bridon, Michael Biebl,
Michal Schmidt, Michal Sekletar, Miklos Vajna, Nathaniel Chen,
Oleksii Shevchuk, Ozan Çağlayan, Thomas Hindoe Paaboel
Andersen, Tollef Fog Heen, Tom Gundersen, Umut Tezduyar,
Zbigniew Jędrzejewski-Szmek
CHANGES WITH 198:
* Configuration of unit files may now be extended via drop-in
files without having to edit/override the unit files
themselves. More specifically, if the administrator wants to
change one value for a service file foobar.service he can
now do so by dropping in a configuration snippet into
/etc/systemd/system/foobar.service.d/*.conf. The unit logic
will load all these snippets and apply them on top of the
main unit configuration file, possibly extending or
overriding its settings. Using these drop-in snippets is
generally nicer than the two earlier options for changing
unit files locally: copying the files from
/usr/lib/systemd/system/ to /etc/systemd/system/ and editing
them there; or creating a new file in /etc/systemd/system/
that incorporates the original one via ".include". Drop-in
snippets into these .d/ directories can be placed in any
directory systemd looks for units in, and the usual
overriding semantics between /usr/lib, /etc and /run apply
for them too.
* Most unit file settings which take lists of items can now be
reset by assigning the empty string to them. For example,
normally, settings such as Environment=FOO=BAR append a new
environment variable assignment to the environment block,
each time they are used. By assigning Environment= the empty
string the environment block can be reset to empty. This is
particularly useful with the .d/*.conf drop-in snippets
mentioned above, since this adds the ability to reset list
settings from vendor unit files via these drop-ins.
* systemctl gained a new "list-dependencies" command for
listing the dependencies of a unit recursively.
* Inhibitors are now honored and listed by "systemctl
suspend", "systemctl poweroff" (and similar) too, not only
GNOME. These commands will also list active sessions by
other users.
* Resource limits (as exposed by the various control group
controllers) can now be controlled dynamically at runtime
for all units. More specifically, you can now use a command
like "systemctl set-cgroup-attr foobar.service cpu.shares
2000" to alter the CPU shares a specific service gets. These
settings are stored persistently on disk, and thus allow the
administrator to easily adjust the resource usage of
services with a few simple commands. This dynamic resource
management logic is also available to other programs via the
bus. Almost any kernel cgroup attribute and controller is
supported.
* systemd-vconsole-setup will now copy all font settings to
all allocated VTs, where it previously applied them only to
the foreground VT.
* libsystemd-login gained the new sd_session_get_tty() API
call.
* This release drops support for a few legacy or
distribution-specific LSB facility names when parsing init
scripts: $x-display-manager, $mail-transfer-agent,
$mail-transport-agent, $mail-transfer-agent, $smtp,
$null. Also, the mail-transfer-agent.target unit backing
this has been removed. Distributions which want to retain
compatibility with this should carry the burden for
supporting this themselves and patch support for these back
in, if they really need to. Also, the facilities $syslog and
$local_fs are now ignored, since systemd does not support
early-boot LSB init scripts anymore, and these facilities
are implied anyway for normal services. syslog.target has
also been removed.
* There are new bus calls on PID1's Manager object for
cancelling jobs, and removing snapshot units. Previously,
both calls were only available on the Job and Snapshot
objects themselves.
* systemd-journal-gatewayd gained SSL support.
* The various "environment" files, such as /etc/locale.conf
now support continuation lines with a backslash ("\") as
last character in the line, similar in style (but different)
to how this is supported in shells.
* For normal user processes the _SYSTEMD_USER_UNIT= field is
now implicitly appended to every log entry logged. systemctl
has been updated to filter by this field when operating on a
user systemd instance.
* nspawn will now implicitly add the CAP_AUDIT_WRITE and
CAP_AUDIT_CONTROL capabilities to the capabilities set for
the container. This makes it easier to boot unmodified
Fedora systems in a container, which however still requires
audit=0 to be passed on the kernel command line. Auditing in
kernel and userspace is unfortunately still too broken in
context of containers, hence we recommend compiling it out
of the kernel or using audit=0. Hopefully this will be fixed
one day for good in the kernel.
* nspawn gained the new --bind= and --bind-ro= parameters to
bind mount specific directories from the host into the
container.
* nspawn will now mount its own devpts file system instance
into the container, in order not to leak pty devices from
the host into the container.
* systemd will now read the firmware boot time performance
information from the EFI variables, if the used boot loader
supports this, and takes it into account for boot performance
analysis via "systemd-analyze". This is currently supported
only in conjunction with Gummiboot, but could be supported
by other boot loaders too. For details see:
http://www.freedesktop.org/wiki/Software/systemd/BootLoaderInterface
* A new generator has been added that automatically mounts the
EFI System Partition (ESP) to /boot, if that directory
exists, is empty, and no other file system has been
configured to be mounted there.
* logind will now send out PrepareForSleep(false) out
unconditionally, after coming back from suspend. This may be
used by applications as asynchronous notification for
system resume events.
* "systemctl unlock-sessions" has been added, that allows
unlocking the screens of all user sessions at once, similar
how "systemctl lock-sessions" already locked all users
sessions. This is backed by a new D-Bus call UnlockSessions().
* "loginctl seat-status" will now show the master device of a
seat. (i.e. the device of a seat that needs to be around for
the seat to be considered available, usually the graphics
card).
* tmpfiles gained a new "X" line type, that allows
configuration of files and directories (with wildcards) that
shall be excluded from automatic cleanup ("aging").
* udev default rules set the device node permissions now only
at "add" events, and do not change them any longer with a
later "change" event.
* The log messages for lid events and power/sleep keypresses
now carry a message ID.
* We now have a substantially larger unit test suite, but this
continues to be work in progress.
* udevadm hwdb gained a new --root= parameter to change the
root directory to operate relative to.
* logind will now issue a background sync() request to the kernel
early at shutdown, so that dirty buffers are flushed to disk early
instead of at the last moment, in order to optimize shutdown
times a little.
* A new bootctl tool has been added that is an interface for
certain boot loader operations. This is currently a preview
and is likely to be extended into a small mechanism daemon
like timedated, localed, hostnamed, and can be used by
graphical UIs to enumerate available boot options, and
request boot into firmware operations.
* systemd-bootchart has been relicensed to LGPLv2.1+ to match
the rest of the package. It also has been updated to work
correctly in initrds.
* Policykit previously has been runtime optional, and is now
also compile time optional via a configure switch.
* systemd-analyze has been reimplemented in C. Also "systemctl
dot" has moved into systemd-analyze.
* "systemctl status" with no further parameters will now print
the status of all active or failed units.
* Operations such as "systemctl start" can now be executed
with a new mode "--irreversible" which may be used to queue
operations that cannot accidentally be reversed by a later
job queuing. This is by default used to make shutdown
requests more robust.
* The Python API of systemd now gained a new module for
reading journal files.
* A new tool kernel-install has been added that can install
kernel images according to the Boot Loader Specification:
http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec
* Boot time console output has been improved to provide
animated boot time output for hanging jobs.
* A new tool systemd-activate has been added which can be used
to test socket activation with, directly from the command
line. This should make it much easier to test and debug
socket activation in daemons.
* journalctl gained a new "--reverse" (or -r) option to show
journal output in reverse order (i.e. newest line first).
* journalctl gained a new "--pager-end" (or -e) option to jump
to immediately jump to the end of the journal in the
pager. This is only supported in conjunction with "less".
* journalctl gained a new "--user-unit=" option, that works
similar to "--unit=" but filters for user units rather than
system units.
* A number of unit files to ease adoption of systemd in
initrds has been added. This moves some minimal logic from
the various initrd implementations into systemd proper.
* The journal files are now owned by a new group
"systemd-journal", which exists specifically to allow access
to the journal, and nothing else. Previously, we used the
"adm" group for that, which however possibly covers more
than just journal/log file access. This new group is now
already used by systemd-journal-gatewayd to ensure this
daemon gets access to the journal files and as little else
as possible. Note that "make install" will also set FS ACLs
up for /var/log/journal to give "adm" and "wheel" read
access to it, in addition to "systemd-journal" which owns
the journal files. We recommend that packaging scripts also
add read access to "adm" + "wheel" to /var/log/journal, and
all existing/future journal files. To normal users and
administrators little changes, however packagers need to
ensure to create the "systemd-journal" system group at
package installation time.
* The systemd-journal-gatewayd now runs as unprivileged user
systemd-journal-gateway:systemd-journal-gateway. Packaging
scripts need to create these system user/group at
installation time.
* timedated now exposes a new boolean property CanNTP that
indicates whether a local NTP service is available or not.
* systemd-detect-virt will now also detect xen PVs
* The pstore file system is now mounted by default, if it is
available.
* In addition to the SELinux and IMA policies we will now also
load SMACK policies at early boot.
Contributions from: Adel Gadllah, Aleksander Morgado, Auke
Kok, Ayan George, Bastien Nocera, Colin Walters, Daniel Buch,
Daniel Wallace, Dave Reisner, David Herrmann, David Strauss,
Eelco Dolstra, Enrico Scholz, Frederic Crozat, Harald Hoyer,
Jan Janssen, Jonathan Callen, Kay Sievers, Lennart Poettering,
Lukas Nykryn, Mantas Mikulėnas, Marc-Antoine Perennou, Martin
Pitt, Mauro Dreissig, Max F. Albrecht, Michael Biebl, Michael
Olbrich, Michal Schmidt, Michal Sekletar, Michal Vyskocil,
Michał Bartoszkiewicz, Mirco Tischler, Nathaniel Chen, Nestor
Ovroy, Oleksii Shevchuk, Paul W. Frields, Piotr Drąg, Rob
Clark, Ryan Lortie, Simon McVittie, Simon Peeters, Steven
Hiscocks, Thomas Hindoe Paaboel Andersen, Tollef Fog Heen, Tom
Gundersen, Umut Tezduyar, William Giokas, Zbigniew