2 This file is part of systemd.
4 Copyright 2016 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 #include "alloc-util.h"
21 #include "bus-internal.h"
22 #include "bus-unit-util.h"
24 #include "cgroup-util.h"
29 #include "locale-util.h"
30 #include "parse-util.h"
31 #include "path-util.h"
32 #include "process-util.h"
33 #include "rlimit-util.h"
34 #include "signal-util.h"
35 #include "string-util.h"
36 #include "syslog-util.h"
37 #include "terminal-util.h"
41 int bus_parse_unit_info(sd_bus_message
*message
, UnitInfo
*u
) {
47 return sd_bus_message_read(
62 int bus_append_unit_property_assignment(sd_bus_message
*m
, const char *assignment
) {
63 const char *eq
, *field
;
69 eq
= strchr(assignment
, '=');
71 log_error("Not an assignment: %s", assignment
);
75 r
= sd_bus_message_open_container(m
, SD_BUS_TYPE_STRUCT
, "sv");
77 return bus_log_create_error(r
);
79 field
= strndupa(assignment
, eq
- assignment
);
82 if (streq(field
, "CPUQuota")) {
85 r
= sd_bus_message_append(m
, "sv", "CPUQuotaPerSecUSec", "t", USEC_INFINITY
);
86 else if (endswith(eq
, "%")) {
89 if (sscanf(eq
, "%lf%%", &percent
) != 1 || percent
<= 0) {
90 log_error("CPU quota '%s' invalid.", eq
);
94 r
= sd_bus_message_append(m
, "sv", "CPUQuotaPerSecUSec", "t", (usec_t
) percent
* USEC_PER_SEC
/ 100);
96 log_error("CPU quota needs to be in percent.");
102 } else if (streq(field
, "EnvironmentFile")) {
104 r
= sd_bus_message_append(m
, "sv", "EnvironmentFiles", "a(sb)", 1,
105 eq
[0] == '-' ? eq
+ 1 : eq
,
109 } else if (STR_IN_SET(field
, "AccuracySec", "RandomizedDelaySec", "RuntimeMaxSec")) {
113 r
= parse_sec(eq
, &t
);
115 return log_error_errno(r
, "Failed to parse %s= parameter: %s", field
, eq
);
118 n
= newa(char, l
+ 2);
122 /* Change suffix Sec → USec */
123 strcpy(mempcpy(n
, field
, l
- 3), "USec");
124 r
= sd_bus_message_append(m
, "sv", n
, "t", t
);
128 r
= sd_bus_message_append_basic(m
, SD_BUS_TYPE_STRING
, field
);
130 return bus_log_create_error(r
);
132 rl
= rlimit_from_string(field
);
137 r
= rlimit_parse(rl
, eq
, &l
);
139 return log_error_errno(r
, "Failed to parse resource limit: %s", eq
);
141 r
= sd_bus_message_append(m
, "v", "t", l
.rlim_max
);
143 return bus_log_create_error(r
);
145 r
= sd_bus_message_close_container(m
);
147 return bus_log_create_error(r
);
149 r
= sd_bus_message_open_container(m
, SD_BUS_TYPE_STRUCT
, "sv");
151 return bus_log_create_error(r
);
153 sn
= strjoina(field
, "Soft");
154 r
= sd_bus_message_append(m
, "sv", sn
, "t", l
.rlim_cur
);
156 } else if (STR_IN_SET(field
,
157 "CPUAccounting", "MemoryAccounting", "IOAccounting", "BlockIOAccounting", "TasksAccounting",
158 "SendSIGHUP", "SendSIGKILL", "WakeSystem", "DefaultDependencies",
159 "IgnoreSIGPIPE", "TTYVHangup", "TTYReset", "RemainAfterExit",
160 "PrivateTmp", "PrivateDevices", "PrivateNetwork", "NoNewPrivileges",
161 "SyslogLevelPrefix", "Delegate", "RemainAfterElapse")) {
163 r
= parse_boolean(eq
);
165 return log_error_errno(r
, "Failed to parse boolean assignment %s.", assignment
);
167 r
= sd_bus_message_append(m
, "v", "b", r
);
169 } else if (streq(field
, "MemoryLimit")) {
172 if (isempty(eq
) || streq(eq
, "infinity"))
173 bytes
= (uint64_t) -1;
175 r
= parse_size(eq
, 1024, &bytes
);
177 log_error("Failed to parse bytes specification %s", assignment
);
182 r
= sd_bus_message_append(m
, "v", "t", bytes
);
184 } else if (streq(field
, "TasksMax")) {
187 if (isempty(eq
) || streq(eq
, "infinity"))
190 r
= safe_atou64(eq
, &n
);
192 log_error("Failed to parse maximum tasks specification %s", assignment
);
197 r
= sd_bus_message_append(m
, "v", "t", n
);
199 } else if (STR_IN_SET(field
, "CPUShares", "StartupCPUShares")) {
202 r
= cg_cpu_shares_parse(eq
, &u
);
204 log_error("Failed to parse %s value %s.", field
, eq
);
208 r
= sd_bus_message_append(m
, "v", "t", u
);
210 } else if (STR_IN_SET(field
, "IOWeight", "StartupIOWeight")) {
213 r
= cg_weight_parse(eq
, &u
);
215 log_error("Failed to parse %s value %s.", field
, eq
);
219 r
= sd_bus_message_append(m
, "v", "t", u
);
221 } else if (STR_IN_SET(field
, "BlockIOWeight", "StartupBlockIOWeight")) {
224 r
= cg_cpu_shares_parse(eq
, &u
);
226 log_error("Failed to parse %s value %s.", field
, eq
);
230 r
= sd_bus_message_append(m
, "v", "t", u
);
232 } else if (STR_IN_SET(field
,
233 "User", "Group", "DevicePolicy", "KillMode",
234 "UtmpIdentifier", "UtmpMode", "PAMName", "TTYPath",
235 "StandardInput", "StandardOutput", "StandardError",
236 "Description", "Slice", "Type", "WorkingDirectory",
237 "RootDirectory", "SyslogIdentifier", "ProtectSystem",
239 r
= sd_bus_message_append(m
, "v", "s", eq
);
241 else if (streq(field
, "SyslogLevel")) {
244 level
= log_level_from_string(eq
);
246 log_error("Failed to parse %s value %s.", field
, eq
);
250 r
= sd_bus_message_append(m
, "v", "i", level
);
252 } else if (streq(field
, "SyslogFacility")) {
255 facility
= log_facility_unshifted_from_string(eq
);
257 log_error("Failed to parse %s value %s.", field
, eq
);
261 r
= sd_bus_message_append(m
, "v", "i", facility
);
263 } else if (streq(field
, "DeviceAllow")) {
266 r
= sd_bus_message_append(m
, "v", "a(ss)", 0);
268 const char *path
, *rwm
, *e
;
272 path
= strndupa(eq
, e
- eq
);
279 if (!path_startswith(path
, "/dev")) {
280 log_error("%s is not a device file in /dev.", path
);
284 r
= sd_bus_message_append(m
, "v", "a(ss)", 1, path
, rwm
);
287 } else if (STR_IN_SET(field
, "IOReadBandwidthMax", "IOWriteBandwidthMax",
288 "BlockIOReadBandwidth", "BlockIOWriteBandwidth")) {
291 r
= sd_bus_message_append(m
, "v", "a(st)", 0);
293 const char *path
, *bandwidth
, *e
;
298 path
= strndupa(eq
, e
- eq
);
301 log_error("Failed to parse %s value %s.", field
, eq
);
305 if (!path_startswith(path
, "/dev")) {
306 log_error("%s is not a device file in /dev.", path
);
310 if (streq(bandwidth
, "max")) {
311 bytes
= CGROUP_LIMIT_MAX
;
313 r
= parse_size(bandwidth
, 1000, &bytes
);
315 log_error("Failed to parse byte value %s.", bandwidth
);
320 r
= sd_bus_message_append(m
, "v", "a(st)", 1, path
, bytes
);
323 } else if (STR_IN_SET(field
, "IODeviceWeight", "BlockIODeviceWeight")) {
326 r
= sd_bus_message_append(m
, "v", "a(st)", 0);
328 const char *path
, *weight
, *e
;
333 path
= strndupa(eq
, e
- eq
);
336 log_error("Failed to parse %s value %s.", field
, eq
);
340 if (!path_startswith(path
, "/dev")) {
341 log_error("%s is not a device file in /dev.", path
);
345 r
= safe_atou64(weight
, &u
);
347 log_error("Failed to parse %s value %s.", field
, weight
);
350 r
= sd_bus_message_append(m
, "v", "a(st)", path
, u
);
353 } else if (streq(field
, "Nice")) {
356 r
= safe_atoi32(eq
, &i
);
358 log_error("Failed to parse %s value %s.", field
, eq
);
362 r
= sd_bus_message_append(m
, "v", "i", i
);
364 } else if (STR_IN_SET(field
, "Environment", "PassEnvironment")) {
367 r
= sd_bus_message_open_container(m
, 'v', "as");
369 return bus_log_create_error(r
);
371 r
= sd_bus_message_open_container(m
, 'a', "s");
373 return bus_log_create_error(r
);
378 _cleanup_free_
char *word
= NULL
;
380 r
= extract_first_word(&p
, &word
, NULL
, EXTRACT_QUOTES
|EXTRACT_CUNESCAPE
);
382 log_error("Failed to parse Environment value %s", eq
);
388 if (streq(field
, "Environment")) {
389 if (!env_assignment_is_valid(word
)) {
390 log_error("Invalid environment assignment: %s", word
);
393 } else { /* PassEnvironment */
394 if (!env_name_is_valid(word
)) {
395 log_error("Invalid environment variable name: %s", word
);
400 r
= sd_bus_message_append_basic(m
, 's', word
);
402 return bus_log_create_error(r
);
405 r
= sd_bus_message_close_container(m
);
407 return bus_log_create_error(r
);
409 r
= sd_bus_message_close_container(m
);
411 } else if (streq(field
, "KillSignal")) {
414 sig
= signal_from_string_try_harder(eq
);
416 log_error("Failed to parse %s value %s.", field
, eq
);
420 r
= sd_bus_message_append(m
, "v", "i", sig
);
422 } else if (streq(field
, "TimerSlackNSec")) {
425 r
= parse_nsec(eq
, &n
);
427 log_error("Failed to parse %s value %s", field
, eq
);
431 r
= sd_bus_message_append(m
, "v", "t", n
);
432 } else if (streq(field
, "OOMScoreAdjust")) {
435 r
= safe_atoi(eq
, &oa
);
437 log_error("Failed to parse %s value %s", field
, eq
);
441 if (!oom_score_adjust_is_valid(oa
)) {
442 log_error("OOM score adjust value out of range");
446 r
= sd_bus_message_append(m
, "v", "i", oa
);
447 } else if (STR_IN_SET(field
, "ReadWriteDirectories", "ReadOnlyDirectories", "InaccessibleDirectories")) {
450 r
= sd_bus_message_open_container(m
, 'v', "as");
452 return bus_log_create_error(r
);
454 r
= sd_bus_message_open_container(m
, 'a', "s");
456 return bus_log_create_error(r
);
461 _cleanup_free_
char *word
= NULL
;
464 r
= extract_first_word(&p
, &word
, NULL
, EXTRACT_QUOTES
);
466 log_error("Failed to parse %s value %s", field
, eq
);
472 if (!utf8_is_valid(word
)) {
473 log_error("Failed to parse %s value %s", field
, eq
);
477 offset
= word
[0] == '-';
478 if (!path_is_absolute(word
+ offset
)) {
479 log_error("Failed to parse %s value %s", field
, eq
);
483 path_kill_slashes(word
+ offset
);
485 r
= sd_bus_message_append_basic(m
, 's', word
);
487 return bus_log_create_error(r
);
490 r
= sd_bus_message_close_container(m
);
492 return bus_log_create_error(r
);
494 r
= sd_bus_message_close_container(m
);
496 } else if (streq(field
, "RuntimeDirectory")) {
499 r
= sd_bus_message_open_container(m
, 'v', "as");
501 return bus_log_create_error(r
);
503 r
= sd_bus_message_open_container(m
, 'a', "s");
505 return bus_log_create_error(r
);
510 _cleanup_free_
char *word
= NULL
;
512 r
= extract_first_word(&p
, &word
, NULL
, EXTRACT_QUOTES
);
514 return log_error_errno(r
, "Failed to parse %s value %s", field
, eq
);
519 r
= sd_bus_message_append_basic(m
, 's', word
);
521 return bus_log_create_error(r
);
524 r
= sd_bus_message_close_container(m
);
526 return bus_log_create_error(r
);
528 r
= sd_bus_message_close_container(m
);
531 log_error("Unknown assignment %s.", assignment
);
537 return bus_log_create_error(r
);
539 r
= sd_bus_message_close_container(m
);
541 return bus_log_create_error(r
);
546 typedef struct BusWaitForJobs
{
553 sd_bus_slot
*slot_job_removed
;
554 sd_bus_slot
*slot_disconnected
;
557 static int match_disconnected(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
560 log_error("Warning! D-Bus connection terminated.");
561 sd_bus_close(sd_bus_message_get_bus(m
));
566 static int match_job_removed(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
567 const char *path
, *unit
, *result
;
568 BusWaitForJobs
*d
= userdata
;
576 r
= sd_bus_message_read(m
, "uoss", &id
, &path
, &unit
, &result
);
578 bus_log_parse_error(r
);
582 found
= set_remove(d
->jobs
, (char*) path
);
588 if (!isempty(result
))
589 d
->result
= strdup(result
);
592 d
->name
= strdup(unit
);
597 void bus_wait_for_jobs_free(BusWaitForJobs
*d
) {
601 set_free_free(d
->jobs
);
603 sd_bus_slot_unref(d
->slot_disconnected
);
604 sd_bus_slot_unref(d
->slot_job_removed
);
606 sd_bus_unref(d
->bus
);
614 int bus_wait_for_jobs_new(sd_bus
*bus
, BusWaitForJobs
**ret
) {
615 _cleanup_(bus_wait_for_jobs_freep
) BusWaitForJobs
*d
= NULL
;
621 d
= new0(BusWaitForJobs
, 1);
625 d
->bus
= sd_bus_ref(bus
);
627 /* When we are a bus client we match by sender. Direct
628 * connections OTOH have no initialized sender field, and
629 * hence we ignore the sender then */
630 r
= sd_bus_add_match(
632 &d
->slot_job_removed
,
635 "sender='org.freedesktop.systemd1',"
636 "interface='org.freedesktop.systemd1.Manager',"
637 "member='JobRemoved',"
638 "path='/org/freedesktop/systemd1'" :
640 "interface='org.freedesktop.systemd1.Manager',"
641 "member='JobRemoved',"
642 "path='/org/freedesktop/systemd1'",
643 match_job_removed
, d
);
647 r
= sd_bus_add_match(
649 &d
->slot_disconnected
,
651 "sender='org.freedesktop.DBus.Local',"
652 "interface='org.freedesktop.DBus.Local',"
653 "member='Disconnected'",
654 match_disconnected
, d
);
664 static int bus_process_wait(sd_bus
*bus
) {
668 r
= sd_bus_process(bus
, NULL
);
674 r
= sd_bus_wait(bus
, (uint64_t) -1);
680 static int bus_job_get_service_result(BusWaitForJobs
*d
, char **result
) {
681 _cleanup_free_
char *dbus_path
= NULL
;
687 dbus_path
= unit_dbus_path_from_name(d
->name
);
691 return sd_bus_get_property_string(d
->bus
,
692 "org.freedesktop.systemd1",
694 "org.freedesktop.systemd1.Service",
700 static const struct {
701 const char *result
, *explanation
;
702 } explanations
[] = {
703 { "resources", "of unavailable resources or another system error" },
704 { "timeout", "a timeout was exceeded" },
705 { "exit-code", "the control process exited with error code" },
706 { "signal", "a fatal signal was delivered to the control process" },
707 { "core-dump", "a fatal signal was delivered causing the control process to dump core" },
708 { "watchdog", "the service failed to send watchdog ping" },
709 { "start-limit", "start of the service was attempted too often" }
712 static void log_job_error_with_service_result(const char* service
, const char *result
, const char* const* extra_args
) {
713 _cleanup_free_
char *service_shell_quoted
= NULL
;
714 const char *systemctl
= "systemctl", *journalctl
= "journalctl";
718 service_shell_quoted
= shell_maybe_quote(service
);
720 if (extra_args
&& extra_args
[1]) {
721 _cleanup_free_
char *t
;
723 t
= strv_join((char**) extra_args
, " ");
724 systemctl
= strjoina("systemctl ", t
? : "<args>");
725 journalctl
= strjoina("journalctl ", t
? : "<args>");
728 if (!isempty(result
)) {
731 for (i
= 0; i
< ELEMENTSOF(explanations
); ++i
)
732 if (streq(result
, explanations
[i
].result
))
735 if (i
< ELEMENTSOF(explanations
)) {
736 log_error("Job for %s failed because %s.\n"
737 "See \"%s status %s\" and \"%s -xe\" for details.\n",
739 explanations
[i
].explanation
,
741 service_shell_quoted
?: "<service>",
747 log_error("Job for %s failed.\n"
748 "See \"%s status %s\" and \"%s -xe\" for details.\n",
751 service_shell_quoted
?: "<service>",
755 /* For some results maybe additional explanation is required */
756 if (streq_ptr(result
, "start-limit"))
757 log_info("To force a start use \"%1$s reset-failed %2$s\"\n"
758 "followed by \"%1$s start %2$s\" again.",
760 service_shell_quoted
?: "<service>");
763 static int check_wait_response(BusWaitForJobs
*d
, bool quiet
, const char* const* extra_args
) {
769 if (streq(d
->result
, "canceled"))
770 log_error("Job for %s canceled.", strna(d
->name
));
771 else if (streq(d
->result
, "timeout"))
772 log_error("Job for %s timed out.", strna(d
->name
));
773 else if (streq(d
->result
, "dependency"))
774 log_error("A dependency job for %s failed. See 'journalctl -xe' for details.", strna(d
->name
));
775 else if (streq(d
->result
, "invalid"))
776 log_error("%s is not active, cannot reload.", strna(d
->name
));
777 else if (streq(d
->result
, "assert"))
778 log_error("Assertion failed on job for %s.", strna(d
->name
));
779 else if (streq(d
->result
, "unsupported"))
780 log_error("Operation on or unit type of %s not supported on this system.", strna(d
->name
));
781 else if (!streq(d
->result
, "done") && !streq(d
->result
, "skipped")) {
784 _cleanup_free_
char *result
= NULL
;
786 q
= bus_job_get_service_result(d
, &result
);
788 log_debug_errno(q
, "Failed to get Result property of service %s: %m", d
->name
);
790 log_job_error_with_service_result(d
->name
, result
, extra_args
);
792 log_error("Job failed. See \"journalctl -xe\" for details.");
796 if (streq(d
->result
, "canceled"))
798 else if (streq(d
->result
, "timeout"))
800 else if (streq(d
->result
, "dependency"))
802 else if (streq(d
->result
, "invalid"))
804 else if (streq(d
->result
, "assert"))
806 else if (streq(d
->result
, "unsupported"))
808 else if (!streq(d
->result
, "done") && !streq(d
->result
, "skipped"))
814 int bus_wait_for_jobs(BusWaitForJobs
*d
, bool quiet
, const char* const* extra_args
) {
819 while (!set_isempty(d
->jobs
)) {
822 q
= bus_process_wait(d
->bus
);
824 return log_error_errno(q
, "Failed to wait for response: %m");
827 q
= check_wait_response(d
, quiet
, extra_args
);
828 /* Return the first error as it is most likely to be
833 log_debug_errno(q
, "Got result %s/%m for job %s", strna(d
->result
), strna(d
->name
));
836 d
->name
= mfree(d
->name
);
837 d
->result
= mfree(d
->result
);
843 int bus_wait_for_jobs_add(BusWaitForJobs
*d
, const char *path
) {
848 r
= set_ensure_allocated(&d
->jobs
, &string_hash_ops
);
852 return set_put_strdup(d
->jobs
, path
);
855 int bus_wait_for_jobs_one(BusWaitForJobs
*d
, const char *path
, bool quiet
) {
858 r
= bus_wait_for_jobs_add(d
, path
);
862 return bus_wait_for_jobs(d
, quiet
, NULL
);
865 int bus_deserialize_and_dump_unit_file_changes(sd_bus_message
*m
, bool quiet
, UnitFileChange
**changes
, unsigned *n_changes
) {
866 const char *type
, *path
, *source
;
869 r
= sd_bus_message_enter_container(m
, SD_BUS_TYPE_ARRAY
, "(sss)");
871 return bus_log_parse_error(r
);
873 while ((r
= sd_bus_message_read(m
, "(sss)", &type
, &path
, &source
)) > 0) {
874 /* We expect only "success" changes to be sent over the bus.
875 Hence, reject anything negative. */
876 UnitFileChangeType ch
= unit_file_change_type_from_string(type
);
879 log_notice("Manager reported unknown change type \"%s\" for path \"%s\", ignoring.", type
, path
);
883 r
= unit_file_changes_add(changes
, n_changes
, ch
, path
, source
);
888 return bus_log_parse_error(r
);
890 r
= sd_bus_message_exit_container(m
);
892 return bus_log_parse_error(r
);
894 unit_file_dump_changes(0, NULL
, *changes
, *n_changes
, false);
900 bool is_const
; /* If false, cgroup_path should be free()'d */
902 Hashmap
*pids
; /* PID → process name */
905 struct CGroupInfo
*parent
;
906 LIST_FIELDS(struct CGroupInfo
, siblings
);
907 LIST_HEAD(struct CGroupInfo
, children
);
911 static bool IS_ROOT(const char *p
) {
912 return isempty(p
) || streq(p
, "/");
915 static int add_cgroup(Hashmap
*cgroups
, const char *path
, bool is_const
, struct CGroupInfo
**ret
) {
916 struct CGroupInfo
*parent
= NULL
, *cg
;
925 cg
= hashmap_get(cgroups
, path
);
931 if (!IS_ROOT(path
)) {
934 e
= strrchr(path
, '/');
938 pp
= strndupa(path
, e
- path
);
942 r
= add_cgroup(cgroups
, pp
, false, &parent
);
947 cg
= new0(struct CGroupInfo
, 1);
952 cg
->cgroup_path
= (char*) path
;
954 cg
->cgroup_path
= strdup(path
);
955 if (!cg
->cgroup_path
) {
961 cg
->is_const
= is_const
;
964 r
= hashmap_put(cgroups
, cg
->cgroup_path
, cg
);
967 free(cg
->cgroup_path
);
973 LIST_PREPEND(siblings
, parent
->children
, cg
);
974 parent
->n_children
++;
981 static int add_process(
987 struct CGroupInfo
*cg
;
994 r
= add_cgroup(cgroups
, path
, true, &cg
);
998 r
= hashmap_ensure_allocated(&cg
->pids
, &trivial_hash_ops
);
1002 return hashmap_put(cg
->pids
, PID_TO_PTR(pid
), (void*) name
);
1005 static void remove_cgroup(Hashmap
*cgroups
, struct CGroupInfo
*cg
) {
1009 while (cg
->children
)
1010 remove_cgroup(cgroups
, cg
->children
);
1012 hashmap_remove(cgroups
, cg
->cgroup_path
);
1015 free(cg
->cgroup_path
);
1017 hashmap_free(cg
->pids
);
1020 LIST_REMOVE(siblings
, cg
->parent
->children
, cg
);
1025 static int cgroup_info_compare_func(const void *a
, const void *b
) {
1026 const struct CGroupInfo
*x
= *(const struct CGroupInfo
* const*) a
, *y
= *(const struct CGroupInfo
* const*) b
;
1031 return strcmp(x
->cgroup_path
, y
->cgroup_path
);
1034 static int dump_processes(
1036 const char *cgroup_path
,
1039 OutputFlags flags
) {
1041 struct CGroupInfo
*cg
;
1046 if (IS_ROOT(cgroup_path
))
1049 cg
= hashmap_get(cgroups
, cgroup_path
);
1053 if (!hashmap_isempty(cg
->pids
)) {
1061 /* Order processes by their PID */
1062 pids
= newa(pid_t
, hashmap_size(cg
->pids
));
1064 HASHMAP_FOREACH_KEY(name
, pidp
, cg
->pids
, j
)
1065 pids
[n
++] = PTR_TO_PID(pidp
);
1067 assert(n
== hashmap_size(cg
->pids
));
1068 qsort_safe(pids
, n
, sizeof(pid_t
), pid_compare_func
);
1070 width
= DECIMAL_STR_WIDTH(pids
[n
-1]);
1072 for (i
= 0; i
< n
; i
++) {
1073 _cleanup_free_
char *e
= NULL
;
1074 const char *special
;
1077 name
= hashmap_get(cg
->pids
, PID_TO_PTR(pids
[i
]));
1080 if (n_columns
!= 0) {
1083 k
= MAX(LESS_BY(n_columns
, 2U + width
+ 1U), 20U);
1085 e
= ellipsize(name
, k
, 100);
1090 more
= i
+1 < n
|| cg
->children
;
1091 special
= draw_special_char(more
? DRAW_TREE_BRANCH
: DRAW_TREE_RIGHT
);
1093 fprintf(stdout
, "%s%s%*"PID_PRI
" %s\n",
1102 struct CGroupInfo
**children
, *child
;
1105 /* Order subcgroups by their name */
1106 children
= newa(struct CGroupInfo
*, cg
->n_children
);
1107 LIST_FOREACH(siblings
, child
, cg
->children
)
1108 children
[n
++] = child
;
1109 assert(n
== cg
->n_children
);
1110 qsort_safe(children
, n
, sizeof(struct CGroupInfo
*), cgroup_info_compare_func
);
1112 n_columns
= MAX(LESS_BY(n_columns
, 2U), 20U);
1114 for (i
= 0; i
< n
; i
++) {
1115 _cleanup_free_
char *pp
= NULL
;
1116 const char *name
, *special
;
1119 child
= children
[i
];
1121 name
= strrchr(child
->cgroup_path
, '/');
1127 special
= draw_special_char(more
? DRAW_TREE_BRANCH
: DRAW_TREE_RIGHT
);
1129 fputs(prefix
, stdout
);
1130 fputs(special
, stdout
);
1131 fputs(name
, stdout
);
1132 fputc('\n', stdout
);
1134 special
= draw_special_char(more
? DRAW_TREE_VERTICAL
: DRAW_TREE_SPACE
);
1136 pp
= strappend(prefix
, special
);
1140 r
= dump_processes(cgroups
, child
->cgroup_path
, pp
, n_columns
, flags
);
1150 static int dump_extra_processes(
1154 OutputFlags flags
) {
1156 _cleanup_free_ pid_t
*pids
= NULL
;
1157 _cleanup_hashmap_free_ Hashmap
*names
= NULL
;
1158 struct CGroupInfo
*cg
;
1159 size_t n_allocated
= 0, n
= 0, k
;
1163 /* Prints the extra processes, i.e. those that are in cgroups we haven't displayed yet. We show them as
1164 * combined, sorted, linear list. */
1166 HASHMAP_FOREACH(cg
, cgroups
, i
) {
1174 if (hashmap_isempty(cg
->pids
))
1177 r
= hashmap_ensure_allocated(&names
, &trivial_hash_ops
);
1181 if (!GREEDY_REALLOC(pids
, n_allocated
, n
+ hashmap_size(cg
->pids
)))
1184 HASHMAP_FOREACH_KEY(name
, pidp
, cg
->pids
, j
) {
1185 pids
[n
++] = PTR_TO_PID(pidp
);
1187 r
= hashmap_put(names
, pidp
, (void*) name
);
1196 qsort_safe(pids
, n
, sizeof(pid_t
), pid_compare_func
);
1197 width
= DECIMAL_STR_WIDTH(pids
[n
-1]);
1199 for (k
= 0; k
< n
; k
++) {
1200 _cleanup_free_
char *e
= NULL
;
1203 name
= hashmap_get(names
, PID_TO_PTR(pids
[k
]));
1206 if (n_columns
!= 0) {
1209 z
= MAX(LESS_BY(n_columns
, 2U + width
+ 1U), 20U);
1211 e
= ellipsize(name
, z
, 100);
1216 fprintf(stdout
, "%s%s %*" PID_PRI
" %s\n",
1218 draw_special_char(DRAW_TRIANGULAR_BULLET
),
1226 int unit_show_processes(
1229 const char *cgroup_path
,
1233 sd_bus_error
*error
) {
1235 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1236 Hashmap
*cgroups
= NULL
;
1237 struct CGroupInfo
*cg
;
1243 if (flags
& OUTPUT_FULL_WIDTH
)
1245 else if (n_columns
<= 0)
1246 n_columns
= columns();
1248 prefix
= strempty(prefix
);
1250 r
= sd_bus_call_method(
1252 "org.freedesktop.systemd1",
1253 "/org/freedesktop/systemd1",
1254 "org.freedesktop.systemd1.Manager",
1263 cgroups
= hashmap_new(&string_hash_ops
);
1267 r
= sd_bus_message_enter_container(reply
, 'a', "(sus)");
1272 const char *path
= NULL
, *name
= NULL
;
1275 r
= sd_bus_message_read(reply
, "(sus)", &path
, &pid
, &name
);
1281 r
= add_process(cgroups
, path
, pid
, name
);
1286 r
= sd_bus_message_exit_container(reply
);
1290 r
= dump_processes(cgroups
, cgroup_path
, prefix
, n_columns
, flags
);
1294 r
= dump_extra_processes(cgroups
, prefix
, n_columns
, flags
);
1297 while ((cg
= hashmap_first(cgroups
)))
1298 remove_cgroup(cgroups
, cg
);
1300 hashmap_free(cgroups
);