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", "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
, "BlockIOWeight", "StartupBlockIOWeight")) {
213 r
= cg_blkio_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
,
222 "User", "Group", "DevicePolicy", "KillMode",
223 "UtmpIdentifier", "UtmpMode", "PAMName", "TTYPath",
224 "StandardInput", "StandardOutput", "StandardError",
225 "Description", "Slice", "Type", "WorkingDirectory",
226 "RootDirectory", "SyslogIdentifier", "ProtectSystem",
228 r
= sd_bus_message_append(m
, "v", "s", eq
);
230 else if (streq(field
, "SyslogLevel")) {
233 level
= log_level_from_string(eq
);
235 log_error("Failed to parse %s value %s.", field
, eq
);
239 r
= sd_bus_message_append(m
, "v", "i", level
);
241 } else if (streq(field
, "SyslogFacility")) {
244 facility
= log_facility_unshifted_from_string(eq
);
246 log_error("Failed to parse %s value %s.", field
, eq
);
250 r
= sd_bus_message_append(m
, "v", "i", facility
);
252 } else if (streq(field
, "DeviceAllow")) {
255 r
= sd_bus_message_append(m
, "v", "a(ss)", 0);
257 const char *path
, *rwm
, *e
;
261 path
= strndupa(eq
, e
- eq
);
268 if (!path_startswith(path
, "/dev")) {
269 log_error("%s is not a device file in /dev.", path
);
273 r
= sd_bus_message_append(m
, "v", "a(ss)", 1, path
, rwm
);
276 } else if (STR_IN_SET(field
, "BlockIOReadBandwidth", "BlockIOWriteBandwidth")) {
279 r
= sd_bus_message_append(m
, "v", "a(st)", 0);
281 const char *path
, *bandwidth
, *e
;
286 path
= strndupa(eq
, e
- eq
);
289 log_error("Failed to parse %s value %s.", field
, eq
);
293 if (!path_startswith(path
, "/dev")) {
294 log_error("%s is not a device file in /dev.", path
);
298 r
= parse_size(bandwidth
, 1000, &bytes
);
300 log_error("Failed to parse byte value %s.", bandwidth
);
304 r
= sd_bus_message_append(m
, "v", "a(st)", 1, path
, bytes
);
307 } else if (streq(field
, "BlockIODeviceWeight")) {
310 r
= sd_bus_message_append(m
, "v", "a(st)", 0);
312 const char *path
, *weight
, *e
;
317 path
= strndupa(eq
, e
- eq
);
320 log_error("Failed to parse %s value %s.", field
, eq
);
324 if (!path_startswith(path
, "/dev")) {
325 log_error("%s is not a device file in /dev.", path
);
329 r
= safe_atou64(weight
, &u
);
331 log_error("Failed to parse %s value %s.", field
, weight
);
334 r
= sd_bus_message_append(m
, "v", "a(st)", 1, path
, u
);
337 } else if (streq(field
, "Nice")) {
340 r
= safe_atoi32(eq
, &i
);
342 log_error("Failed to parse %s value %s.", field
, eq
);
346 r
= sd_bus_message_append(m
, "v", "i", i
);
348 } else if (STR_IN_SET(field
, "Environment", "PassEnvironment")) {
351 r
= sd_bus_message_open_container(m
, 'v', "as");
353 return bus_log_create_error(r
);
355 r
= sd_bus_message_open_container(m
, 'a', "s");
357 return bus_log_create_error(r
);
362 _cleanup_free_
char *word
= NULL
;
364 r
= extract_first_word(&p
, &word
, NULL
, EXTRACT_QUOTES
|EXTRACT_CUNESCAPE
);
366 log_error("Failed to parse Environment value %s", eq
);
372 if (streq(field
, "Environment")) {
373 if (!env_assignment_is_valid(word
)) {
374 log_error("Invalid environment assignment: %s", word
);
377 } else { /* PassEnvironment */
378 if (!env_name_is_valid(word
)) {
379 log_error("Invalid environment variable name: %s", word
);
384 r
= sd_bus_message_append_basic(m
, 's', word
);
386 return bus_log_create_error(r
);
389 r
= sd_bus_message_close_container(m
);
391 return bus_log_create_error(r
);
393 r
= sd_bus_message_close_container(m
);
395 } else if (streq(field
, "KillSignal")) {
398 sig
= signal_from_string_try_harder(eq
);
400 log_error("Failed to parse %s value %s.", field
, eq
);
404 r
= sd_bus_message_append(m
, "v", "i", sig
);
406 } else if (streq(field
, "TimerSlackNSec")) {
409 r
= parse_nsec(eq
, &n
);
411 log_error("Failed to parse %s value %s", field
, eq
);
415 r
= sd_bus_message_append(m
, "v", "t", n
);
416 } else if (streq(field
, "OOMScoreAdjust")) {
419 r
= safe_atoi(eq
, &oa
);
421 log_error("Failed to parse %s value %s", field
, eq
);
425 if (!oom_score_adjust_is_valid(oa
)) {
426 log_error("OOM score adjust value out of range");
430 r
= sd_bus_message_append(m
, "v", "i", oa
);
431 } else if (STR_IN_SET(field
, "ReadWriteDirectories", "ReadOnlyDirectories", "InaccessibleDirectories")) {
434 r
= sd_bus_message_open_container(m
, 'v', "as");
436 return bus_log_create_error(r
);
438 r
= sd_bus_message_open_container(m
, 'a', "s");
440 return bus_log_create_error(r
);
445 _cleanup_free_
char *word
= NULL
;
448 r
= extract_first_word(&p
, &word
, NULL
, EXTRACT_QUOTES
);
450 log_error("Failed to parse %s value %s", field
, eq
);
456 if (!utf8_is_valid(word
)) {
457 log_error("Failed to parse %s value %s", field
, eq
);
461 offset
= word
[0] == '-';
462 if (!path_is_absolute(word
+ offset
)) {
463 log_error("Failed to parse %s value %s", field
, eq
);
467 path_kill_slashes(word
+ offset
);
469 r
= sd_bus_message_append_basic(m
, 's', word
);
471 return bus_log_create_error(r
);
474 r
= sd_bus_message_close_container(m
);
476 return bus_log_create_error(r
);
478 r
= sd_bus_message_close_container(m
);
480 } else if (streq(field
, "RuntimeDirectory")) {
483 r
= sd_bus_message_open_container(m
, 'v', "as");
485 return bus_log_create_error(r
);
487 r
= sd_bus_message_open_container(m
, 'a', "s");
489 return bus_log_create_error(r
);
494 _cleanup_free_
char *word
= NULL
;
496 r
= extract_first_word(&p
, &word
, NULL
, EXTRACT_QUOTES
);
498 return log_error_errno(r
, "Failed to parse %s value %s", field
, eq
);
503 r
= sd_bus_message_append_basic(m
, 's', word
);
505 return bus_log_create_error(r
);
508 r
= sd_bus_message_close_container(m
);
510 return bus_log_create_error(r
);
512 r
= sd_bus_message_close_container(m
);
515 log_error("Unknown assignment %s.", assignment
);
521 return bus_log_create_error(r
);
523 r
= sd_bus_message_close_container(m
);
525 return bus_log_create_error(r
);
530 typedef struct BusWaitForJobs
{
537 sd_bus_slot
*slot_job_removed
;
538 sd_bus_slot
*slot_disconnected
;
541 static int match_disconnected(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
544 log_error("Warning! D-Bus connection terminated.");
545 sd_bus_close(sd_bus_message_get_bus(m
));
550 static int match_job_removed(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
551 const char *path
, *unit
, *result
;
552 BusWaitForJobs
*d
= userdata
;
560 r
= sd_bus_message_read(m
, "uoss", &id
, &path
, &unit
, &result
);
562 bus_log_parse_error(r
);
566 found
= set_remove(d
->jobs
, (char*) path
);
572 if (!isempty(result
))
573 d
->result
= strdup(result
);
576 d
->name
= strdup(unit
);
581 void bus_wait_for_jobs_free(BusWaitForJobs
*d
) {
585 set_free_free(d
->jobs
);
587 sd_bus_slot_unref(d
->slot_disconnected
);
588 sd_bus_slot_unref(d
->slot_job_removed
);
590 sd_bus_unref(d
->bus
);
598 int bus_wait_for_jobs_new(sd_bus
*bus
, BusWaitForJobs
**ret
) {
599 _cleanup_(bus_wait_for_jobs_freep
) BusWaitForJobs
*d
= NULL
;
605 d
= new0(BusWaitForJobs
, 1);
609 d
->bus
= sd_bus_ref(bus
);
611 /* When we are a bus client we match by sender. Direct
612 * connections OTOH have no initialized sender field, and
613 * hence we ignore the sender then */
614 r
= sd_bus_add_match(
616 &d
->slot_job_removed
,
619 "sender='org.freedesktop.systemd1',"
620 "interface='org.freedesktop.systemd1.Manager',"
621 "member='JobRemoved',"
622 "path='/org/freedesktop/systemd1'" :
624 "interface='org.freedesktop.systemd1.Manager',"
625 "member='JobRemoved',"
626 "path='/org/freedesktop/systemd1'",
627 match_job_removed
, d
);
631 r
= sd_bus_add_match(
633 &d
->slot_disconnected
,
635 "sender='org.freedesktop.DBus.Local',"
636 "interface='org.freedesktop.DBus.Local',"
637 "member='Disconnected'",
638 match_disconnected
, d
);
648 static int bus_process_wait(sd_bus
*bus
) {
652 r
= sd_bus_process(bus
, NULL
);
658 r
= sd_bus_wait(bus
, (uint64_t) -1);
664 static int bus_job_get_service_result(BusWaitForJobs
*d
, char **result
) {
665 _cleanup_free_
char *dbus_path
= NULL
;
671 dbus_path
= unit_dbus_path_from_name(d
->name
);
675 return sd_bus_get_property_string(d
->bus
,
676 "org.freedesktop.systemd1",
678 "org.freedesktop.systemd1.Service",
684 static const struct {
685 const char *result
, *explanation
;
686 } explanations
[] = {
687 { "resources", "of unavailable resources or another system error" },
688 { "timeout", "a timeout was exceeded" },
689 { "exit-code", "the control process exited with error code" },
690 { "signal", "a fatal signal was delivered to the control process" },
691 { "core-dump", "a fatal signal was delivered causing the control process to dump core" },
692 { "watchdog", "the service failed to send watchdog ping" },
693 { "start-limit", "start of the service was attempted too often" }
696 static void log_job_error_with_service_result(const char* service
, const char *result
, const char* const* extra_args
) {
697 _cleanup_free_
char *service_shell_quoted
= NULL
;
698 const char *systemctl
= "systemctl", *journalctl
= "journalctl";
702 service_shell_quoted
= shell_maybe_quote(service
);
704 if (extra_args
&& extra_args
[1]) {
705 _cleanup_free_
char *t
;
707 t
= strv_join((char**) extra_args
, " ");
708 systemctl
= strjoina("systemctl ", t
? : "<args>");
709 journalctl
= strjoina("journalctl ", t
? : "<args>");
712 if (!isempty(result
)) {
715 for (i
= 0; i
< ELEMENTSOF(explanations
); ++i
)
716 if (streq(result
, explanations
[i
].result
))
719 if (i
< ELEMENTSOF(explanations
)) {
720 log_error("Job for %s failed because %s.\n"
721 "See \"%s status %s\" and \"%s -xe\" for details.\n",
723 explanations
[i
].explanation
,
725 service_shell_quoted
?: "<service>",
731 log_error("Job for %s failed.\n"
732 "See \"%s status %s\" and \"%s -xe\" for details.\n",
735 service_shell_quoted
?: "<service>",
739 /* For some results maybe additional explanation is required */
740 if (streq_ptr(result
, "start-limit"))
741 log_info("To force a start use \"%1$s reset-failed %2$s\"\n"
742 "followed by \"%1$s start %2$s\" again.",
744 service_shell_quoted
?: "<service>");
747 static int check_wait_response(BusWaitForJobs
*d
, bool quiet
, const char* const* extra_args
) {
753 if (streq(d
->result
, "canceled"))
754 log_error("Job for %s canceled.", strna(d
->name
));
755 else if (streq(d
->result
, "timeout"))
756 log_error("Job for %s timed out.", strna(d
->name
));
757 else if (streq(d
->result
, "dependency"))
758 log_error("A dependency job for %s failed. See 'journalctl -xe' for details.", strna(d
->name
));
759 else if (streq(d
->result
, "invalid"))
760 log_error("%s is not active, cannot reload.", strna(d
->name
));
761 else if (streq(d
->result
, "assert"))
762 log_error("Assertion failed on job for %s.", strna(d
->name
));
763 else if (streq(d
->result
, "unsupported"))
764 log_error("Operation on or unit type of %s not supported on this system.", strna(d
->name
));
765 else if (!streq(d
->result
, "done") && !streq(d
->result
, "skipped")) {
768 _cleanup_free_
char *result
= NULL
;
770 q
= bus_job_get_service_result(d
, &result
);
772 log_debug_errno(q
, "Failed to get Result property of service %s: %m", d
->name
);
774 log_job_error_with_service_result(d
->name
, result
, extra_args
);
776 log_error("Job failed. See \"journalctl -xe\" for details.");
780 if (streq(d
->result
, "canceled"))
782 else if (streq(d
->result
, "timeout"))
784 else if (streq(d
->result
, "dependency"))
786 else if (streq(d
->result
, "invalid"))
788 else if (streq(d
->result
, "assert"))
790 else if (streq(d
->result
, "unsupported"))
792 else if (!streq(d
->result
, "done") && !streq(d
->result
, "skipped"))
798 int bus_wait_for_jobs(BusWaitForJobs
*d
, bool quiet
, const char* const* extra_args
) {
803 while (!set_isempty(d
->jobs
)) {
806 q
= bus_process_wait(d
->bus
);
808 return log_error_errno(q
, "Failed to wait for response: %m");
811 q
= check_wait_response(d
, quiet
, extra_args
);
812 /* Return the first error as it is most likely to be
817 log_debug_errno(q
, "Got result %s/%m for job %s", strna(d
->result
), strna(d
->name
));
820 d
->name
= mfree(d
->name
);
821 d
->result
= mfree(d
->result
);
827 int bus_wait_for_jobs_add(BusWaitForJobs
*d
, const char *path
) {
832 r
= set_ensure_allocated(&d
->jobs
, &string_hash_ops
);
836 return set_put_strdup(d
->jobs
, path
);
839 int bus_wait_for_jobs_one(BusWaitForJobs
*d
, const char *path
, bool quiet
) {
842 r
= bus_wait_for_jobs_add(d
, path
);
846 return bus_wait_for_jobs(d
, quiet
, NULL
);
849 int bus_deserialize_and_dump_unit_file_changes(sd_bus_message
*m
, bool quiet
, UnitFileChange
**changes
, unsigned *n_changes
) {
850 const char *type
, *path
, *source
;
853 r
= sd_bus_message_enter_container(m
, SD_BUS_TYPE_ARRAY
, "(sss)");
855 return bus_log_parse_error(r
);
857 while ((r
= sd_bus_message_read(m
, "(sss)", &type
, &path
, &source
)) > 0) {
858 /* We expect only "success" changes to be sent over the bus.
859 Hence, reject anything negative. */
860 UnitFileChangeType ch
= unit_file_change_type_from_string(type
);
863 log_notice("Manager reported unknown change type \"%s\" for path \"%s\", ignoring.", type
, path
);
867 r
= unit_file_changes_add(changes
, n_changes
, ch
, path
, source
);
872 return bus_log_parse_error(r
);
874 r
= sd_bus_message_exit_container(m
);
876 return bus_log_parse_error(r
);
878 unit_file_dump_changes(0, NULL
, *changes
, *n_changes
, false);
884 bool is_const
; /* If false, cgroup_path should be free()'d */
886 Hashmap
*pids
; /* PID → process name */
889 struct CGroupInfo
*parent
;
890 LIST_FIELDS(struct CGroupInfo
, siblings
);
891 LIST_HEAD(struct CGroupInfo
, children
);
895 static bool IS_ROOT(const char *p
) {
896 return isempty(p
) || streq(p
, "/");
899 static int add_cgroup(Hashmap
*cgroups
, const char *path
, bool is_const
, struct CGroupInfo
**ret
) {
900 struct CGroupInfo
*parent
= NULL
, *cg
;
909 cg
= hashmap_get(cgroups
, path
);
915 if (!IS_ROOT(path
)) {
918 e
= strrchr(path
, '/');
922 pp
= strndupa(path
, e
- path
);
926 r
= add_cgroup(cgroups
, pp
, false, &parent
);
931 cg
= new0(struct CGroupInfo
, 1);
936 cg
->cgroup_path
= (char*) path
;
938 cg
->cgroup_path
= strdup(path
);
939 if (!cg
->cgroup_path
) {
945 cg
->is_const
= is_const
;
948 r
= hashmap_put(cgroups
, cg
->cgroup_path
, cg
);
951 free(cg
->cgroup_path
);
957 LIST_PREPEND(siblings
, parent
->children
, cg
);
958 parent
->n_children
++;
965 static int add_process(
971 struct CGroupInfo
*cg
;
978 r
= add_cgroup(cgroups
, path
, true, &cg
);
982 r
= hashmap_ensure_allocated(&cg
->pids
, &trivial_hash_ops
);
986 return hashmap_put(cg
->pids
, PID_TO_PTR(pid
), (void*) name
);
989 static void remove_cgroup(Hashmap
*cgroups
, struct CGroupInfo
*cg
) {
994 remove_cgroup(cgroups
, cg
->children
);
996 hashmap_remove(cgroups
, cg
->cgroup_path
);
999 free(cg
->cgroup_path
);
1001 hashmap_free(cg
->pids
);
1004 LIST_REMOVE(siblings
, cg
->parent
->children
, cg
);
1009 static int cgroup_info_compare_func(const void *a
, const void *b
) {
1010 const struct CGroupInfo
*x
= *(const struct CGroupInfo
* const*) a
, *y
= *(const struct CGroupInfo
* const*) b
;
1015 return strcmp(x
->cgroup_path
, y
->cgroup_path
);
1018 static int dump_processes(
1020 const char *cgroup_path
,
1023 OutputFlags flags
) {
1025 struct CGroupInfo
*cg
;
1030 if (IS_ROOT(cgroup_path
))
1033 cg
= hashmap_get(cgroups
, cgroup_path
);
1037 if (!hashmap_isempty(cg
->pids
)) {
1045 /* Order processes by their PID */
1046 pids
= newa(pid_t
, hashmap_size(cg
->pids
));
1048 HASHMAP_FOREACH_KEY(name
, pidp
, cg
->pids
, j
)
1049 pids
[n
++] = PTR_TO_PID(pidp
);
1051 assert(n
== hashmap_size(cg
->pids
));
1052 qsort_safe(pids
, n
, sizeof(pid_t
), pid_compare_func
);
1054 width
= DECIMAL_STR_WIDTH(pids
[n
-1]);
1056 for (i
= 0; i
< n
; i
++) {
1057 _cleanup_free_
char *e
= NULL
;
1058 const char *special
;
1061 name
= hashmap_get(cg
->pids
, PID_TO_PTR(pids
[i
]));
1064 if (n_columns
!= 0) {
1067 k
= MAX(LESS_BY(n_columns
, 2U + width
+ 1U), 20U);
1069 e
= ellipsize(name
, k
, 100);
1074 more
= i
+1 < n
|| cg
->children
;
1075 special
= draw_special_char(more
? DRAW_TREE_BRANCH
: DRAW_TREE_RIGHT
);
1077 fprintf(stdout
, "%s%s%*"PID_PRI
" %s\n",
1086 struct CGroupInfo
**children
, *child
;
1089 /* Order subcgroups by their name */
1090 children
= newa(struct CGroupInfo
*, cg
->n_children
);
1091 LIST_FOREACH(siblings
, child
, cg
->children
)
1092 children
[n
++] = child
;
1093 assert(n
== cg
->n_children
);
1094 qsort_safe(children
, n
, sizeof(struct CGroupInfo
*), cgroup_info_compare_func
);
1096 n_columns
= MAX(LESS_BY(n_columns
, 2U), 20U);
1098 for (i
= 0; i
< n
; i
++) {
1099 _cleanup_free_
char *pp
= NULL
;
1100 const char *name
, *special
;
1103 child
= children
[i
];
1105 name
= strrchr(child
->cgroup_path
, '/');
1111 special
= draw_special_char(more
? DRAW_TREE_BRANCH
: DRAW_TREE_RIGHT
);
1113 fputs(prefix
, stdout
);
1114 fputs(special
, stdout
);
1115 fputs(name
, stdout
);
1116 fputc('\n', stdout
);
1118 special
= draw_special_char(more
? DRAW_TREE_VERTICAL
: DRAW_TREE_SPACE
);
1120 pp
= strappend(prefix
, special
);
1124 r
= dump_processes(cgroups
, child
->cgroup_path
, pp
, n_columns
, flags
);
1134 static int dump_extra_processes(
1138 OutputFlags flags
) {
1140 _cleanup_free_ pid_t
*pids
= NULL
;
1141 _cleanup_hashmap_free_ Hashmap
*names
= NULL
;
1142 struct CGroupInfo
*cg
;
1143 size_t n_allocated
= 0, n
= 0, k
;
1147 /* Prints the extra processes, i.e. those that are in cgroups we haven't displayed yet. We show them as
1148 * combined, sorted, linear list. */
1150 HASHMAP_FOREACH(cg
, cgroups
, i
) {
1158 if (hashmap_isempty(cg
->pids
))
1161 r
= hashmap_ensure_allocated(&names
, &trivial_hash_ops
);
1165 if (!GREEDY_REALLOC(pids
, n_allocated
, n
+ hashmap_size(cg
->pids
)))
1168 HASHMAP_FOREACH_KEY(name
, pidp
, cg
->pids
, j
) {
1169 pids
[n
++] = PTR_TO_PID(pidp
);
1171 r
= hashmap_put(names
, pidp
, (void*) name
);
1180 qsort_safe(pids
, n
, sizeof(pid_t
), pid_compare_func
);
1181 width
= DECIMAL_STR_WIDTH(pids
[n
-1]);
1183 for (k
= 0; k
< n
; k
++) {
1184 _cleanup_free_
char *e
= NULL
;
1187 name
= hashmap_get(names
, PID_TO_PTR(pids
[k
]));
1190 if (n_columns
!= 0) {
1193 z
= MAX(LESS_BY(n_columns
, 2U + width
+ 1U), 20U);
1195 e
= ellipsize(name
, z
, 100);
1200 fprintf(stdout
, "%s%s %*" PID_PRI
" %s\n",
1202 draw_special_char(DRAW_TRIANGULAR_BULLET
),
1210 int unit_show_processes(
1213 const char *cgroup_path
,
1217 sd_bus_error
*error
) {
1219 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1220 Hashmap
*cgroups
= NULL
;
1221 struct CGroupInfo
*cg
;
1227 if (flags
& OUTPUT_FULL_WIDTH
)
1229 else if (n_columns
<= 0)
1230 n_columns
= columns();
1232 prefix
= strempty(prefix
);
1234 r
= sd_bus_call_method(
1236 "org.freedesktop.systemd1",
1237 "/org/freedesktop/systemd1",
1238 "org.freedesktop.systemd1.Manager",
1247 cgroups
= hashmap_new(&string_hash_ops
);
1251 r
= sd_bus_message_enter_container(reply
, 'a', "(sus)");
1256 const char *path
= NULL
, *name
= NULL
;
1259 r
= sd_bus_message_read(reply
, "(sus)", &path
, &pid
, &name
);
1265 r
= add_process(cgroups
, path
, pid
, name
);
1270 r
= sd_bus_message_exit_container(reply
);
1274 r
= dump_processes(cgroups
, cgroup_path
, prefix
, n_columns
, flags
);
1278 r
= dump_extra_processes(cgroups
, prefix
, n_columns
, flags
);
1281 while ((cg
= hashmap_first(cgroups
)))
1282 remove_cgroup(cgroups
, cg
);
1284 hashmap_free(cgroups
);