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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
c2f1db8f | 2 | #pragma once |
87f0e418 LP |
3 | |
4 | #include <stdbool.h> | |
5 | #include <stdlib.h> | |
bbc9006e | 6 | #include <unistd.h> |
87f0e418 | 7 | |
6a48d82f | 8 | #include "bpf-program.h" |
134e56dc | 9 | #include "condition.h" |
87a47f99 | 10 | #include "emergency-action.h" |
71d35b6b | 11 | #include "list.h" |
5bcf34eb | 12 | #include "show-status.h" |
fab34748 | 13 | #include "set.h" |
5cfa33e0 | 14 | #include "unit-file.h" |
6b659ed8 | 15 | #include "cgroup.h" |
87f0e418 | 16 | |
57b7a260 FS |
17 | typedef struct UnitRef UnitRef; |
18 | ||
db2cb23b UTL |
19 | typedef enum KillOperation { |
20 | KILL_TERMINATE, | |
1d98fef1 | 21 | KILL_TERMINATE_AND_LOG, |
a232ebcc | 22 | KILL_RESTART, |
db2cb23b | 23 | KILL_KILL, |
c87700a1 | 24 | KILL_WATCHDOG, |
4940c0b0 LP |
25 | _KILL_OPERATION_MAX, |
26 | _KILL_OPERATION_INVALID = -1 | |
db2cb23b UTL |
27 | } KillOperation; |
28 | ||
5afe510c LP |
29 | typedef enum CollectMode { |
30 | COLLECT_INACTIVE, | |
31 | COLLECT_INACTIVE_OR_FAILED, | |
32 | _COLLECT_MODE_MAX, | |
33 | _COLLECT_MODE_INVALID = -1, | |
34 | } CollectMode; | |
35 | ||
87f0e418 | 36 | static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t) { |
3742095b | 37 | return IN_SET(t, UNIT_ACTIVE, UNIT_RELOADING); |
87f0e418 LP |
38 | } |
39 | ||
40 | static inline bool UNIT_IS_ACTIVE_OR_ACTIVATING(UnitActiveState t) { | |
3742095b | 41 | return IN_SET(t, UNIT_ACTIVE, UNIT_ACTIVATING, UNIT_RELOADING); |
87f0e418 LP |
42 | } |
43 | ||
44 | static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t) { | |
3742095b | 45 | return IN_SET(t, UNIT_INACTIVE, UNIT_FAILED, UNIT_DEACTIVATING); |
6124958c LP |
46 | } |
47 | ||
fdf20a31 | 48 | static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t) { |
3742095b | 49 | return IN_SET(t, UNIT_INACTIVE, UNIT_FAILED); |
87f0e418 LP |
50 | } |
51 | ||
eef85c4a LP |
52 | /* Stores the 'reason' a dependency was created as a bit mask, i.e. due to which configuration source it came to be. We |
53 | * use this so that we can selectively flush out parts of dependencies again. Note that the same dependency might be | |
54 | * created as a result of multiple "reasons", hence the bitmask. */ | |
55 | typedef enum UnitDependencyMask { | |
5238e957 | 56 | /* Configured directly by the unit file, .wants/.requires symlink or drop-in, or as an immediate result of a |
eef85c4a LP |
57 | * non-dependency option configured that way. */ |
58 | UNIT_DEPENDENCY_FILE = 1 << 0, | |
59 | ||
60 | /* As unconditional implicit dependency (not affected by unit configuration — except by the unit name and | |
61 | * type) */ | |
62 | UNIT_DEPENDENCY_IMPLICIT = 1 << 1, | |
63 | ||
64 | /* A dependency effected by DefaultDependencies=yes. Note that dependencies marked this way are conceptually | |
65 | * just a subset of UNIT_DEPENDENCY_FILE, as DefaultDependencies= is itself a unit file setting that can only | |
66 | * be set in unit files. We make this two separate bits only to help debugging how dependencies came to be. */ | |
67 | UNIT_DEPENDENCY_DEFAULT = 1 << 2, | |
68 | ||
69 | /* A dependency created from udev rules */ | |
70 | UNIT_DEPENDENCY_UDEV = 1 << 3, | |
71 | ||
72 | /* A dependency created because of some unit's RequiresMountsFor= setting */ | |
73 | UNIT_DEPENDENCY_PATH = 1 << 4, | |
74 | ||
75 | /* A dependency created because of data read from /proc/self/mountinfo and no other configuration source */ | |
76 | UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT = 1 << 5, | |
77 | ||
78 | /* A dependency created because of data read from /proc/self/mountinfo, but conditionalized by | |
79 | * DefaultDependencies= and thus also involving configuration from UNIT_DEPENDENCY_FILE sources */ | |
80 | UNIT_DEPENDENCY_MOUNTINFO_DEFAULT = 1 << 6, | |
81 | ||
82 | /* A dependency created because of data read from /proc/swaps and no other configuration source */ | |
83 | UNIT_DEPENDENCY_PROC_SWAP = 1 << 7, | |
84 | ||
ef31828d | 85 | _UNIT_DEPENDENCY_MASK_FULL = (1 << 8) - 1, |
eef85c4a LP |
86 | } UnitDependencyMask; |
87 | ||
88 | /* The Unit's dependencies[] hashmaps use this structure as value. It has the same size as a void pointer, and thus can | |
89 | * be stored directly as hashmap value, without any indirection. Note that this stores two masks, as both the origin | |
90 | * and the destination of a dependency might have created it. */ | |
91 | typedef union UnitDependencyInfo { | |
92 | void *data; | |
93 | struct { | |
94 | UnitDependencyMask origin_mask:16; | |
95 | UnitDependencyMask destination_mask:16; | |
96 | } _packed_; | |
97 | } UnitDependencyInfo; | |
98 | ||
ef734fd6 LP |
99 | #include "job.h" |
100 | ||
a016b922 LP |
101 | struct UnitRef { |
102 | /* Keeps tracks of references to a unit. This is useful so | |
103 | * that we can merge two units if necessary and correct all | |
104 | * references to them */ | |
105 | ||
7f7d01ed ZJS |
106 | Unit *source, *target; |
107 | LIST_FIELDS(UnitRef, refs_by_target); | |
a016b922 LP |
108 | }; |
109 | ||
57b7a260 | 110 | typedef struct Unit { |
87f0e418 | 111 | Manager *manager; |
23a177ef | 112 | |
87f0e418 LP |
113 | UnitType type; |
114 | UnitLoadState load_state; | |
23a177ef | 115 | Unit *merged_into; |
87f0e418 LP |
116 | |
117 | char *id; /* One name is special because we use it for identification. Points to an entry in the names set */ | |
9e2f7c11 | 118 | char *instance; |
87f0e418 LP |
119 | |
120 | Set *names; | |
87f0e418 | 121 | |
eef85c4a LP |
122 | /* For each dependency type we maintain a Hashmap whose key is the Unit* object, and the value encodes why the |
123 | * dependency exists, using the UnitDependencyInfo type */ | |
124 | Hashmap *dependencies[_UNIT_DEPENDENCY_MAX]; | |
125 | ||
126 | /* Similar, for RequiresMountsFor= path dependencies. The key is the path, the value the UnitDependencyInfo type */ | |
127 | Hashmap *requires_mounts_for; | |
7c8fa05c | 128 | |
87f0e418 | 129 | char *description; |
49dbfa7b | 130 | char **documentation; |
faf919f1 | 131 | |
6be1e7d5 | 132 | char *fragment_path; /* if loaded from a config file this is the primary path to it */ |
1b64d026 | 133 | char *source_path; /* if converted, the source file */ |
ae7a7182 | 134 | char **dropin_paths; |
f78f265f | 135 | |
45fb0699 | 136 | usec_t fragment_mtime; |
1b64d026 | 137 | usec_t source_mtime; |
ae7a7182 | 138 | usec_t dropin_mtime; |
87f0e418 | 139 | |
4f4afc88 LP |
140 | /* If this is a transient unit we are currently writing, this is where we are writing it to */ |
141 | FILE *transient_file; | |
142 | ||
e0209d83 | 143 | /* If there is something to do with this unit, then this is the installed job for it */ |
87f0e418 LP |
144 | Job *job; |
145 | ||
e0209d83 MS |
146 | /* JOB_NOP jobs are special and can be installed without disturbing the real job. */ |
147 | Job *nop_job; | |
148 | ||
bbc29086 DM |
149 | /* The slot used for watching NameOwnerChanged signals */ |
150 | sd_bus_slot *match_bus_slot; | |
a5a8776a | 151 | sd_bus_slot *get_name_owner_slot; |
bbc29086 | 152 | |
05a98afd LP |
153 | /* References to this unit from clients */ |
154 | sd_bus_track *bus_track; | |
155 | char **deserialized_refs; | |
156 | ||
f189ab18 | 157 | /* Job timeout and action to take */ |
faf919f1 | 158 | usec_t job_timeout; |
a2df3ea4 | 159 | usec_t job_running_timeout; |
eae51da3 | 160 | bool job_running_timeout_set:1; |
87a47f99 | 161 | EmergencyAction job_timeout_action; |
f189ab18 | 162 | char *job_timeout_reboot_arg; |
faf919f1 | 163 | |
57020a3a | 164 | /* References to this */ |
7f7d01ed | 165 | LIST_HEAD(UnitRef, refs_by_target); |
57020a3a | 166 | |
52661efd LP |
167 | /* Conditions to check */ |
168 | LIST_HEAD(Condition, conditions); | |
59fccdc5 | 169 | LIST_HEAD(Condition, asserts); |
52661efd | 170 | |
90bbc946 | 171 | dual_timestamp condition_timestamp; |
59fccdc5 | 172 | dual_timestamp assert_timestamp; |
90bbc946 | 173 | |
a483fb59 LP |
174 | /* Updated whenever the low-level state changes */ |
175 | dual_timestamp state_change_timestamp; | |
176 | ||
177 | /* Updated whenever the (high-level) active state enters or leaves the active or inactive states */ | |
63983207 LP |
178 | dual_timestamp inactive_exit_timestamp; |
179 | dual_timestamp active_enter_timestamp; | |
180 | dual_timestamp active_exit_timestamp; | |
181 | dual_timestamp inactive_enter_timestamp; | |
87f0e418 | 182 | |
a016b922 LP |
183 | UnitRef slice; |
184 | ||
ef734fd6 | 185 | /* Per type list */ |
ac155bb8 | 186 | LIST_FIELDS(Unit, units_by_type); |
c1e1601e | 187 | |
701cc384 | 188 | /* Load queue */ |
ac155bb8 | 189 | LIST_FIELDS(Unit, load_queue); |
701cc384 | 190 | |
c1e1601e | 191 | /* D-Bus queue */ |
ac155bb8 | 192 | LIST_FIELDS(Unit, dbus_queue); |
23a177ef LP |
193 | |
194 | /* Cleanup queue */ | |
ac155bb8 | 195 | LIST_FIELDS(Unit, cleanup_queue); |
9d58f1db | 196 | |
701cc384 | 197 | /* GC queue */ |
ac155bb8 | 198 | LIST_FIELDS(Unit, gc_queue); |
701cc384 | 199 | |
4ad49000 | 200 | /* CGroup realize members queue */ |
91a6073e | 201 | LIST_FIELDS(Unit, cgroup_realize_queue); |
4ad49000 | 202 | |
09e24654 LP |
203 | /* cgroup empty queue */ |
204 | LIST_FIELDS(Unit, cgroup_empty_queue); | |
205 | ||
afcfaa69 LP |
206 | /* cgroup OOM queue */ |
207 | LIST_FIELDS(Unit, cgroup_oom_queue); | |
208 | ||
19496554 MS |
209 | /* Target dependencies queue */ |
210 | LIST_FIELDS(Unit, target_deps_queue); | |
211 | ||
a3c1168a LP |
212 | /* Queue of units with StopWhenUnneeded set that shell be checked for clean-up. */ |
213 | LIST_FIELDS(Unit, stop_when_unneeded_queue); | |
214 | ||
a911bb9a LP |
215 | /* PIDs we keep an eye on. Note that a unit might have many |
216 | * more, but these are the ones we care enough about to | |
217 | * process SIGCHLD for */ | |
218 | Set *pids; | |
219 | ||
62a76913 LP |
220 | /* Used in SIGCHLD and sd_notify() message event invocation logic to avoid that we dispatch the same event |
221 | * multiple times on the same unit. */ | |
222 | unsigned sigchldgen; | |
223 | unsigned notifygen; | |
36f20ae3 | 224 | |
701cc384 | 225 | /* Used during GC sweeps */ |
eced69b3 | 226 | unsigned gc_marker; |
701cc384 | 227 | |
8821a00f LP |
228 | /* Error code when we didn't manage to load the unit (negative) */ |
229 | int load_error; | |
230 | ||
6bf0f408 | 231 | /* Put a ratelimit on unit starting */ |
7bf081a1 | 232 | RateLimit start_ratelimit; |
87a47f99 | 233 | EmergencyAction start_limit_action; |
53c35a76 | 234 | |
7af67e9a LP |
235 | /* What to do on failure or success */ |
236 | EmergencyAction success_action, failure_action; | |
237 | int success_action_exit_status, failure_action_exit_status; | |
6bf0f408 LP |
238 | char *reboot_arg; |
239 | ||
67bfdc97 LP |
240 | /* Make sure we never enter endless loops with the check unneeded logic, or the BindsTo= logic */ |
241 | RateLimit auto_stop_ratelimit; | |
bea355da | 242 | |
00d9ef85 LP |
243 | /* Reference to a specific UID/GID */ |
244 | uid_t ref_uid; | |
245 | gid_t ref_gid; | |
246 | ||
d2dc52db | 247 | /* Cached unit file state and preset */ |
a4375746 | 248 | UnitFileState unit_file_state; |
d2dc52db | 249 | int unit_file_preset; |
a4375746 | 250 | |
66ebf6c0 TH |
251 | /* Where the cpu.stat or cpuacct.usage was at the time the unit was started */ |
252 | nsec_t cpu_usage_base; | |
fe700f46 | 253 | nsec_t cpu_usage_last; /* the most recently read value */ |
5ad096b3 | 254 | |
afcfaa69 LP |
255 | /* The current counter of the oom_kill field in the memory.events cgroup attribute */ |
256 | uint64_t oom_kill_last; | |
257 | ||
fbe14fc9 LP |
258 | /* Where the io.stat data was at the time the unit was started */ |
259 | uint64_t io_accounting_base[_CGROUP_IO_ACCOUNTING_METRIC_MAX]; | |
260 | uint64_t io_accounting_last[_CGROUP_IO_ACCOUNTING_METRIC_MAX]; /* the most recently read value */ | |
261 | ||
7c52a17b ZJS |
262 | /* Counterparts in the cgroup filesystem */ |
263 | char *cgroup_path; | |
4e1dfa45 CD |
264 | CGroupMask cgroup_realized_mask; /* In which hierarchies does this unit's cgroup exist? (only relevant on cgroup v1) */ |
265 | CGroupMask cgroup_enabled_mask; /* Which controllers are enabled (or more correctly: enabled for the children) for this unit's cgroup? (only relevant on cgroup v2) */ | |
5238e957 | 266 | CGroupMask cgroup_invalidated_mask; /* A mask specifying controllers which shall be considered invalidated, and require re-realization */ |
5a62e5e2 | 267 | CGroupMask cgroup_members_mask; /* A cache for the controllers required by all children of this cgroup (only relevant for slice units) */ |
afcfaa69 LP |
268 | |
269 | /* Inotify watch descriptors for watching cgroup.events and memory.events on cgroupv2 */ | |
0bb814c2 | 270 | int cgroup_control_inotify_wd; |
afcfaa69 | 271 | int cgroup_memory_inotify_wd; |
7c52a17b | 272 | |
084c7007 RG |
273 | /* Device Controller BPF program */ |
274 | BPFProgram *bpf_device_control_installed; | |
275 | ||
6a48d82f DM |
276 | /* IP BPF Firewalling/accounting */ |
277 | int ip_accounting_ingress_map_fd; | |
278 | int ip_accounting_egress_map_fd; | |
279 | ||
280 | int ipv4_allow_map_fd; | |
281 | int ipv6_allow_map_fd; | |
282 | int ipv4_deny_map_fd; | |
283 | int ipv6_deny_map_fd; | |
284 | ||
aa2b6f1d LP |
285 | BPFProgram *ip_bpf_ingress, *ip_bpf_ingress_installed; |
286 | BPFProgram *ip_bpf_egress, *ip_bpf_egress_installed; | |
fab34748 KL |
287 | Set *ip_bpf_custom_ingress; |
288 | Set *ip_bpf_custom_ingress_installed; | |
289 | Set *ip_bpf_custom_egress; | |
290 | Set *ip_bpf_custom_egress_installed; | |
6a48d82f | 291 | |
6b659ed8 LP |
292 | uint64_t ip_accounting_extra[_CGROUP_IP_ACCOUNTING_METRIC_MAX]; |
293 | ||
50be4f4a LP |
294 | /* Low-priority event source which is used to remove watched PIDs that have gone away, and subscribe to any new |
295 | * ones which might have appeared. */ | |
296 | sd_event_source *rewatch_pids_event_source; | |
297 | ||
7c52a17b ZJS |
298 | /* How to start OnFailure units */ |
299 | JobMode on_failure_job_mode; | |
300 | ||
5afe510c LP |
301 | /* Tweaking the GC logic */ |
302 | CollectMode collect_mode; | |
303 | ||
4b58153d LP |
304 | /* The current invocation ID */ |
305 | sd_id128_t invocation_id; | |
306 | char invocation_id_string[SD_ID128_STRING_MAX]; /* useful when logging */ | |
307 | ||
9d58f1db LP |
308 | /* Garbage collect us we nobody wants or requires us anymore */ |
309 | bool stop_when_unneeded; | |
310 | ||
35b8ca3a | 311 | /* Create default dependencies */ |
a40eb732 LP |
312 | bool default_dependencies; |
313 | ||
b5e9dba8 LP |
314 | /* Refuse manual starting, allow starting only indirectly via dependency. */ |
315 | bool refuse_manual_start; | |
316 | ||
317 | /* Don't allow the user to stop this unit manually, allow stopping only indirectly via dependency. */ | |
318 | bool refuse_manual_stop; | |
319 | ||
2528a7a6 LP |
320 | /* Allow isolation requests */ |
321 | bool allow_isolate; | |
322 | ||
c8f4d764 LP |
323 | /* Ignore this unit when isolating */ |
324 | bool ignore_on_isolate; | |
325 | ||
49f43d5f | 326 | /* Did the last condition check succeed? */ |
90bbc946 | 327 | bool condition_result; |
59fccdc5 | 328 | bool assert_result; |
90bbc946 | 329 | |
c2756a68 LP |
330 | /* Is this a transient unit? */ |
331 | bool transient; | |
332 | ||
f5869324 LP |
333 | /* Is this a unit that is always running and cannot be stopped? */ |
334 | bool perpetual; | |
335 | ||
66fa4bdd | 336 | /* Booleans indicating membership of this unit in the various queues */ |
9d58f1db LP |
337 | bool in_load_queue:1; |
338 | bool in_dbus_queue:1; | |
339 | bool in_cleanup_queue:1; | |
701cc384 | 340 | bool in_gc_queue:1; |
91a6073e | 341 | bool in_cgroup_realize_queue:1; |
09e24654 | 342 | bool in_cgroup_empty_queue:1; |
afcfaa69 | 343 | bool in_cgroup_oom_queue:1; |
19496554 | 344 | bool in_target_deps_queue:1; |
a3c1168a | 345 | bool in_stop_when_unneeded_queue:1; |
701cc384 | 346 | |
9d58f1db | 347 | bool sent_dbus_new_signal:1; |
6c073082 | 348 | |
cd6d0a45 | 349 | bool in_audit:1; |
adefcf28 | 350 | bool on_console:1; |
a57f7e2c LP |
351 | |
352 | bool cgroup_realized:1; | |
bc432dc7 | 353 | bool cgroup_members_mask_valid:1; |
f78f265f | 354 | |
3c7416b6 LP |
355 | /* Reset cgroup accounting next time we fork something off */ |
356 | bool reset_accounting:1; | |
357 | ||
6bf0f408 LP |
358 | bool start_limit_hit:1; |
359 | ||
f78f265f | 360 | /* Did we already invoke unit_coldplug() for this unit? */ |
f8a30ce5 | 361 | bool coldplugged:1; |
05a98afd LP |
362 | |
363 | /* For transient units: whether to add a bus track reference after creating the unit */ | |
364 | bool bus_track_add:1; | |
d3070fbd LP |
365 | |
366 | /* Remember which unit state files we created */ | |
367 | bool exported_invocation_id:1; | |
368 | bool exported_log_level_max:1; | |
369 | bool exported_log_extra_fields:1; | |
5ac1530e ZJS |
370 | bool exported_log_ratelimit_interval:1; |
371 | bool exported_log_ratelimit_burst:1; | |
2e59b241 | 372 | |
527ede0c FB |
373 | /* Whether we warned about clamping the CPU quota period */ |
374 | bool warned_clamping_cpu_quota_period:1; | |
375 | ||
2e59b241 LP |
376 | /* When writing transient unit files, stores which section we stored last. If < 0, we didn't write any yet. If |
377 | * == 0 we are in the [Unit] section, if > 0 we are in the unit type-specific section. */ | |
845d247a | 378 | signed int last_section_private:2; |
57b7a260 | 379 | } Unit; |
87f0e418 | 380 | |
57b7a260 | 381 | typedef struct UnitStatusMessageFormats { |
c6918296 MS |
382 | const char *starting_stopping[2]; |
383 | const char *finished_start_job[_JOB_RESULT_MAX]; | |
384 | const char *finished_stop_job[_JOB_RESULT_MAX]; | |
57b7a260 | 385 | } UnitStatusMessageFormats; |
c6918296 | 386 | |
2e59b241 LP |
387 | /* Flags used when writing drop-in files or transient unit files */ |
388 | typedef enum UnitWriteFlags { | |
389 | /* Write a runtime unit file or drop-in (i.e. one below /run) */ | |
390 | UNIT_RUNTIME = 1 << 0, | |
391 | ||
392 | /* Write a persistent drop-in (i.e. one below /etc) */ | |
393 | UNIT_PERSISTENT = 1 << 1, | |
394 | ||
395 | /* Place this item in the per-unit-type private section, instead of [Unit] */ | |
396 | UNIT_PRIVATE = 1 << 2, | |
397 | ||
398 | /* Apply specifier escaping before writing */ | |
399 | UNIT_ESCAPE_SPECIFIERS = 1 << 3, | |
400 | ||
401 | /* Apply C escaping before writing */ | |
402 | UNIT_ESCAPE_C = 1 << 4, | |
403 | } UnitWriteFlags; | |
404 | ||
405 | /* Returns true if neither persistent, nor runtime storage is requested, i.e. this is a check invocation only */ | |
6529ccfa LP |
406 | static inline bool UNIT_WRITE_FLAGS_NOOP(UnitWriteFlags flags) { |
407 | return (flags & (UNIT_RUNTIME|UNIT_PERSISTENT)) == 0; | |
408 | } | |
8e2af478 | 409 | |
57b7a260 FS |
410 | #include "kill.h" |
411 | ||
412 | typedef struct UnitVTable { | |
7d17cfbc MS |
413 | /* How much memory does an object of this unit type need */ |
414 | size_t object_size; | |
415 | ||
3ef63c31 LP |
416 | /* If greater than 0, the offset into the object where |
417 | * ExecContext is found, if the unit type has that */ | |
418 | size_t exec_context_offset; | |
419 | ||
4ad49000 LP |
420 | /* If greater than 0, the offset into the object where |
421 | * CGroupContext is found, if the unit type has that */ | |
422 | size_t cgroup_context_offset; | |
423 | ||
718db961 LP |
424 | /* If greater than 0, the offset into the object where |
425 | * KillContext is found, if the unit type has that */ | |
426 | size_t kill_context_offset; | |
427 | ||
613b411c LP |
428 | /* If greater than 0, the offset into the object where the |
429 | * pointer to ExecRuntime is found, if the unit type has | |
430 | * that */ | |
431 | size_t exec_runtime_offset; | |
432 | ||
29206d46 LP |
433 | /* If greater than 0, the offset into the object where the pointer to DynamicCreds is found, if the unit type |
434 | * has that. */ | |
435 | size_t dynamic_creds_offset; | |
436 | ||
ee33e53a | 437 | /* The name of the configuration file section with the private settings of this unit */ |
4ad49000 | 438 | const char *private_section; |
71645aca | 439 | |
f975e971 LP |
440 | /* Config file sections this unit type understands, separated |
441 | * by NUL chars */ | |
442 | const char *sections; | |
443 | ||
e537352b | 444 | /* This should reset all type-specific variables. This should |
a16e1123 LP |
445 | * not allocate memory, and is called with zero-initialized |
446 | * data. It should hence only initialize variables that need | |
447 | * to be set != 0. */ | |
e537352b LP |
448 | void (*init)(Unit *u); |
449 | ||
a16e1123 LP |
450 | /* This should free all type-specific variables. It should be |
451 | * idempotent. */ | |
452 | void (*done)(Unit *u); | |
453 | ||
e537352b LP |
454 | /* Actually load data from disk. This may fail, and should set |
455 | * load_state to UNIT_LOADED, UNIT_MERGED or leave it at | |
456 | * UNIT_STUB if no configuration could be found. */ | |
457 | int (*load)(Unit *u); | |
458 | ||
f0831ed2 | 459 | /* During deserialization we only record the intended state to return to. With coldplug() we actually put the |
a95c0505 LP |
460 | * deserialized state in effect. This is where unit_notify() should be called to start things up. Note that |
461 | * this callback is invoked *before* we leave the reloading state of the manager, i.e. *before* we consider the | |
462 | * reloading to be complete. Thus, this callback should just restore the exact same state for any unit that was | |
463 | * in effect before the reload, i.e. units should not catch up with changes happened during the reload. That's | |
464 | * what catchup() below is for. */ | |
be847e82 | 465 | int (*coldplug)(Unit *u); |
87f0e418 | 466 | |
a95c0505 LP |
467 | /* This is called shortly after all units' coldplug() call was invoked, and *after* the manager left the |
468 | * reloading state. It's supposed to catch up with state changes due to external events we missed so far (for | |
469 | * example because they took place while we were reloading/reexecing) */ | |
f0831ed2 LP |
470 | void (*catchup)(Unit *u); |
471 | ||
87f0e418 LP |
472 | void (*dump)(Unit *u, FILE *f, const char *prefix); |
473 | ||
474 | int (*start)(Unit *u); | |
475 | int (*stop)(Unit *u); | |
476 | int (*reload)(Unit *u); | |
477 | ||
718db961 | 478 | int (*kill)(Unit *u, KillWho w, int signo, sd_bus_error *error); |
8a0867d6 | 479 | |
380dc8b0 LP |
480 | /* Clear out the various runtime/state/cache/logs/configuration data */ |
481 | int (*clean)(Unit *u, ExecCleanMask m); | |
482 | ||
483 | /* Return which kind of data can be cleaned */ | |
484 | int (*can_clean)(Unit *u, ExecCleanMask *ret); | |
485 | ||
87f0e418 LP |
486 | bool (*can_reload)(Unit *u); |
487 | ||
a16e1123 LP |
488 | /* Write all data that cannot be restored from other sources |
489 | * away using unit_serialize_item() */ | |
490 | int (*serialize)(Unit *u, FILE *f, FDSet *fds); | |
491 | ||
492 | /* Restore one item from the serialization */ | |
493 | int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds); | |
494 | ||
01e10de3 | 495 | /* Try to match up fds with what we need for this unit */ |
9ff1a6f1 | 496 | void (*distribute_fds)(Unit *u, FDSet *fds); |
01e10de3 | 497 | |
87f0e418 LP |
498 | /* Boils down the more complex internal state of this unit to |
499 | * a simpler one that the engine can understand */ | |
500 | UnitActiveState (*active_state)(Unit *u); | |
501 | ||
10a94420 LP |
502 | /* Returns the substate specific to this unit type as |
503 | * string. This is purely information so that we can give the | |
35b8ca3a | 504 | * user a more fine grained explanation in which actual state a |
10a94420 LP |
505 | * unit is in. */ |
506 | const char* (*sub_state_to_string)(Unit *u); | |
507 | ||
deb4e708 MK |
508 | /* Additionally to UnitActiveState determine whether unit is to be restarted. */ |
509 | bool (*will_restart)(Unit *u); | |
510 | ||
f2f725e5 ZJS |
511 | /* Return false when there is a reason to prevent this unit from being gc'ed |
512 | * even though nothing references it and it isn't active in any way. */ | |
513 | bool (*may_gc)(Unit *u); | |
701cc384 | 514 | |
7eb2a8a1 LP |
515 | /* When the unit is not running and no job for it queued we shall release its runtime resources */ |
516 | void (*release_resources)(Unit *u); | |
a354329f | 517 | |
718db961 | 518 | /* Invoked on every child that died */ |
87f0e418 | 519 | void (*sigchld_event)(Unit *u, pid_t pid, int code, int status); |
7824bbeb | 520 | |
fdf20a31 MM |
521 | /* Reset failed state if we are in failed state */ |
522 | void (*reset_failed)(Unit *u); | |
5632e374 | 523 | |
afcfaa69 | 524 | /* Called whenever any of the cgroups this unit watches for ran empty */ |
4ad49000 | 525 | void (*notify_cgroup_empty)(Unit *u); |
8e274523 | 526 | |
afcfaa69 LP |
527 | /* Called whenever an OOM kill event on this unit was seen */ |
528 | void (*notify_cgroup_oom)(Unit *u); | |
529 | ||
8c47c732 | 530 | /* Called whenever a process of this unit sends us a message */ |
db256aab | 531 | void (*notify_message)(Unit *u, const struct ucred *ucred, char **tags, FDSet *fds); |
8c47c732 | 532 | |
00d9ef85 | 533 | /* Called whenever a name this Unit registered for comes or goes away. */ |
fc67a943 | 534 | void (*bus_name_owner_change)(Unit *u, const char *new_owner); |
05e343b7 | 535 | |
8e2af478 | 536 | /* Called for each property that is being set */ |
2e59b241 | 537 | int (*bus_set_property)(Unit *u, const char *name, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error); |
8e2af478 LP |
538 | |
539 | /* Called after at least one property got changed to apply the necessary change */ | |
540 | int (*bus_commit_properties)(Unit *u); | |
541 | ||
a7f241db LP |
542 | /* Return the unit this unit is following */ |
543 | Unit *(*following)(Unit *u); | |
544 | ||
6210e7fc LP |
545 | /* Return the set of units that are following each other */ |
546 | int (*following_set)(Unit *u, Set **s); | |
547 | ||
3ecaa09b LP |
548 | /* Invoked each time a unit this unit is triggering changes |
549 | * state or gains/loses a job */ | |
550 | void (*trigger_notify)(Unit *u, Unit *trigger); | |
551 | ||
8742514c LP |
552 | /* Called whenever CLOCK_REALTIME made a jump */ |
553 | void (*time_change)(Unit *u); | |
554 | ||
bbf5fd8e LP |
555 | /* Called whenever /etc/localtime was modified */ |
556 | void (*timezone_change)(Unit *u); | |
557 | ||
7a7821c8 LP |
558 | /* Returns the next timeout of a unit */ |
559 | int (*get_timeout)(Unit *u, usec_t *timeout); | |
68db7a3b | 560 | |
291d565a LP |
561 | /* Returns the main PID if there is any defined, or 0. */ |
562 | pid_t (*main_pid)(Unit *u); | |
563 | ||
564 | /* Returns the main PID if there is any defined, or 0. */ | |
565 | pid_t (*control_pid)(Unit *u); | |
566 | ||
bb2c7685 LP |
567 | /* Returns true if the unit currently needs access to the console */ |
568 | bool (*needs_console)(Unit *u); | |
569 | ||
7af67e9a LP |
570 | /* Returns the exit status to propagate in case of FailureAction=exit/SuccessAction=exit; usually returns the |
571 | * exit code of the "main" process of the service or similar. */ | |
572 | int (*exit_status)(Unit *u); | |
573 | ||
04eb582a LP |
574 | /* Like the enumerate() callback further down, but only enumerates the perpetual units, i.e. all units that |
575 | * unconditionally exist and are always active. The main reason to keep both enumeration functions separate is | |
576 | * philosophical: the state of perpetual units should be put in place by coldplug(), while the state of those | |
577 | * discovered through regular enumeration should be put in place by catchup(), see below. */ | |
578 | void (*enumerate_perpetual)(Manager *m); | |
579 | ||
f0831ed2 LP |
580 | /* This is called for each unit type and should be used to enumerate units already existing in the system |
581 | * internally and load them. However, everything that is loaded here should still stay in inactive state. It is | |
04eb582a | 582 | * the job of the catchup() call above to put the units into the discovered state. */ |
ba64af90 | 583 | void (*enumerate)(Manager *m); |
f50e0a01 LP |
584 | |
585 | /* Type specific cleanups. */ | |
7824bbeb | 586 | void (*shutdown)(Manager *m); |
9d58f1db | 587 | |
0faacd47 LP |
588 | /* If this function is set and return false all jobs for units |
589 | * of this type will immediately fail. */ | |
1c2e9646 | 590 | bool (*supported)(void); |
0faacd47 | 591 | |
718db961 LP |
592 | /* The bus vtable */ |
593 | const sd_bus_vtable *bus_vtable; | |
594 | ||
718db961 | 595 | /* The strings to print in status messages */ |
c6918296 MS |
596 | UnitStatusMessageFormats status_message_formats; |
597 | ||
c2756a68 LP |
598 | /* True if transient units of this type are OK */ |
599 | bool can_transient:1; | |
c5a97ed1 | 600 | |
1d9cc876 LP |
601 | /* True if cgroup delegation is permissible */ |
602 | bool can_delegate:1; | |
603 | ||
c80a9a33 LP |
604 | /* True if the unit type triggers other units, i.e. can have a UNIT_TRIGGERS dependency */ |
605 | bool can_trigger:1; | |
606 | ||
607 | /* True if the unit type knows a failure state, and thus can be source of an OnFailure= dependency */ | |
608 | bool can_fail:1; | |
609 | ||
610 | /* True if After= dependencies should be refused */ | |
611 | bool refuse_after:1; | |
612 | ||
d4fd1cf2 LP |
613 | /* True if units of this type shall be startable only once and then never again */ |
614 | bool once_only:1; | |
615 | ||
c5a97ed1 LP |
616 | /* True if queued jobs of this type should be GC'ed if no other job needs them anymore */ |
617 | bool gc_jobs:1; | |
57b7a260 | 618 | } UnitVTable; |
87f0e418 LP |
619 | |
620 | extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX]; | |
621 | ||
6529ccfa LP |
622 | static inline const UnitVTable* UNIT_VTABLE(Unit *u) { |
623 | return unit_vtable[u->type]; | |
624 | } | |
87f0e418 LP |
625 | |
626 | /* For casting a unit into the various unit types */ | |
627 | #define DEFINE_CAST(UPPERCASE, MixedCase) \ | |
628 | static inline MixedCase* UPPERCASE(Unit *u) { \ | |
ac155bb8 | 629 | if (_unlikely_(!u || u->type != UNIT_##UPPERCASE)) \ |
87f0e418 LP |
630 | return NULL; \ |
631 | \ | |
632 | return (MixedCase*) u; \ | |
633 | } | |
634 | ||
635 | /* For casting the various unit types into a unit */ | |
bbf11206 LP |
636 | #define UNIT(u) \ |
637 | ({ \ | |
638 | typeof(u) _u_ = (u); \ | |
639 | Unit *_w_ = _u_ ? &(_u_)->meta : NULL; \ | |
640 | _w_; \ | |
641 | }) | |
87f0e418 | 642 | |
35b7ff80 LP |
643 | #define UNIT_HAS_EXEC_CONTEXT(u) (UNIT_VTABLE(u)->exec_context_offset > 0) |
644 | #define UNIT_HAS_CGROUP_CONTEXT(u) (UNIT_VTABLE(u)->cgroup_context_offset > 0) | |
645 | #define UNIT_HAS_KILL_CONTEXT(u) (UNIT_VTABLE(u)->kill_context_offset > 0) | |
646 | ||
6529ccfa LP |
647 | static inline Unit* UNIT_TRIGGER(Unit *u) { |
648 | return hashmap_first_key(u->dependencies[UNIT_TRIGGERS]); | |
649 | } | |
3ecaa09b | 650 | |
7d17cfbc | 651 | Unit *unit_new(Manager *m, size_t size); |
87f0e418 | 652 | void unit_free(Unit *u); |
dc409696 | 653 | DEFINE_TRIVIAL_CLEANUP_FUNC(Unit *, unit_free); |
87f0e418 | 654 | |
a581e45a | 655 | int unit_new_for_name(Manager *m, size_t size, const char *name, Unit **ret); |
87f0e418 | 656 | int unit_add_name(Unit *u, const char *name); |
9e2f7c11 | 657 | |
eef85c4a LP |
658 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference, UnitDependencyMask mask); |
659 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference, UnitDependencyMask mask); | |
2c966c03 | 660 | |
35d8c19a | 661 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, bool add_reference, UnitDependencyMask mask); |
5a724170 | 662 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, bool add_reference, UnitDependencyMask mask); |
2c966c03 | 663 | |
23a177ef LP |
664 | int unit_add_exec_dependencies(Unit *u, ExecContext *c); |
665 | ||
0ae97ec1 | 666 | int unit_choose_id(Unit *u, const char *name); |
f50e0a01 | 667 | int unit_set_description(Unit *u, const char *description); |
87f0e418 | 668 | |
f2f725e5 | 669 | bool unit_may_gc(Unit *u); |
701cc384 | 670 | |
87f0e418 | 671 | void unit_add_to_load_queue(Unit *u); |
c1e1601e | 672 | void unit_add_to_dbus_queue(Unit *u); |
23a177ef | 673 | void unit_add_to_cleanup_queue(Unit *u); |
701cc384 | 674 | void unit_add_to_gc_queue(Unit *u); |
19496554 | 675 | void unit_add_to_target_deps_queue(Unit *u); |
fda09318 | 676 | void unit_submit_to_stop_when_unneeded_queue(Unit *u); |
87f0e418 LP |
677 | |
678 | int unit_merge(Unit *u, Unit *other); | |
23a177ef LP |
679 | int unit_merge_by_name(Unit *u, const char *other); |
680 | ||
44a6b1b6 | 681 | Unit *unit_follow_merge(Unit *u) _pure_; |
87f0e418 | 682 | |
c3620770 | 683 | int unit_load_fragment_and_dropin(Unit *u, bool fragment_required); |
87f0e418 LP |
684 | int unit_load(Unit *unit); |
685 | ||
d79200e2 LP |
686 | int unit_set_slice(Unit *u, Unit *slice); |
687 | int unit_set_default_slice(Unit *u); | |
a016b922 | 688 | |
44a6b1b6 | 689 | const char *unit_description(Unit *u) _pure_; |
2a8f53c6 | 690 | const char *unit_status_string(Unit *u) _pure_; |
87f0e418 | 691 | |
303ee601 | 692 | bool unit_has_name(const Unit *u, const char *name); |
f278026d | 693 | |
87f0e418 LP |
694 | UnitActiveState unit_active_state(Unit *u); |
695 | ||
10a94420 LP |
696 | const char* unit_sub_state_to_string(Unit *u); |
697 | ||
87f0e418 LP |
698 | void unit_dump(Unit *u, FILE *f, const char *prefix); |
699 | ||
44a6b1b6 ZJS |
700 | bool unit_can_reload(Unit *u) _pure_; |
701 | bool unit_can_start(Unit *u) _pure_; | |
f5869324 | 702 | bool unit_can_stop(Unit *u) _pure_; |
44a6b1b6 | 703 | bool unit_can_isolate(Unit *u) _pure_; |
87f0e418 LP |
704 | |
705 | int unit_start(Unit *u); | |
706 | int unit_stop(Unit *u); | |
707 | int unit_reload(Unit *u); | |
708 | ||
718db961 LP |
709 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error); |
710 | int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, sd_bus_error *error); | |
8a0867d6 | 711 | |
2ad2e41a | 712 | typedef enum UnitNotifyFlags { |
ef31828d LP |
713 | UNIT_NOTIFY_RELOAD_FAILURE = 1 << 0, |
714 | UNIT_NOTIFY_WILL_AUTO_RESTART = 1 << 1, | |
31cd5f63 | 715 | UNIT_NOTIFY_SKIP_CONDITION = 1 << 2, |
2ad2e41a LP |
716 | } UnitNotifyFlags; |
717 | ||
718 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, UnitNotifyFlags flags); | |
87f0e418 | 719 | |
f75f613d | 720 | int unit_watch_pid(Unit *u, pid_t pid, bool exclusive); |
87f0e418 | 721 | void unit_unwatch_pid(Unit *u, pid_t pid); |
a911bb9a LP |
722 | void unit_unwatch_all_pids(Unit *u); |
723 | ||
50be4f4a LP |
724 | int unit_enqueue_rewatch_pids(Unit *u); |
725 | void unit_dequeue_rewatch_pids(Unit *u); | |
87f0e418 | 726 | |
9806e87d | 727 | int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name); |
05e343b7 LP |
728 | int unit_watch_bus_name(Unit *u, const char *name); |
729 | void unit_unwatch_bus_name(Unit *u, const char *name); | |
730 | ||
87f0e418 LP |
731 | bool unit_job_is_applicable(Unit *u, JobType j); |
732 | ||
0301abf4 LP |
733 | int set_unit_path(const char *p); |
734 | ||
50159e6a | 735 | char *unit_dbus_path(Unit *u); |
4b58153d | 736 | char *unit_dbus_path_invocation_id(Unit *u); |
50159e6a | 737 | |
f6ff8c29 LP |
738 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found); |
739 | ||
44a6b1b6 | 740 | bool unit_can_serialize(Unit *u) _pure_; |
a34ceba6 | 741 | |
6b78f9b4 | 742 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs); |
a16e1123 | 743 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds); |
8948b341 | 744 | int unit_deserialize_skip(FILE *f); |
a16e1123 | 745 | |
d336ba9f | 746 | int unit_add_node_dependency(Unit *u, const char *what, UnitDependency d, UnitDependencyMask mask); |
44b0d1fd | 747 | int unit_add_blockdev_dependency(Unit *u, const char *what, UnitDependencyMask mask); |
6e2ef85b | 748 | |
be847e82 | 749 | int unit_coldplug(Unit *u); |
f0831ed2 | 750 | void unit_catchup(Unit *u); |
cca098b0 | 751 | |
5bcf34eb | 752 | void unit_status_printf(Unit *u, StatusType status_type, const char *status, const char *unit_status_msg_format) _printf_(4, 0); |
9e58ff9c | 753 | |
45fb0699 LP |
754 | bool unit_need_daemon_reload(Unit *u); |
755 | ||
fdf20a31 | 756 | void unit_reset_failed(Unit *u); |
5632e374 | 757 | |
a7f241db | 758 | Unit *unit_following(Unit *u); |
eeaedb7c | 759 | int unit_following_set(Unit *u, Set **s); |
a7f241db | 760 | |
9444b1f2 LP |
761 | const char *unit_slice_name(Unit *u); |
762 | ||
44a6b1b6 ZJS |
763 | bool unit_stop_pending(Unit *u) _pure_; |
764 | bool unit_inactive_or_pending(Unit *u) _pure_; | |
31afa0a4 | 765 | bool unit_active_or_pending(Unit *u); |
52a12341 | 766 | bool unit_will_restart_default(Unit *u); |
deb4e708 | 767 | bool unit_will_restart(Unit *u); |
18ffdfda | 768 | |
bba34eed LP |
769 | int unit_add_default_target_dependency(Unit *u, Unit *target); |
770 | ||
3ecaa09b LP |
771 | void unit_start_on_failure(Unit *u); |
772 | void unit_trigger_notify(Unit *u); | |
c0daa706 | 773 | |
a4375746 | 774 | UnitFileState unit_get_unit_file_state(Unit *u); |
d2dc52db | 775 | int unit_get_unit_file_preset(Unit *u); |
a4375746 | 776 | |
7f7d01ed | 777 | Unit* unit_ref_set(UnitRef *ref, Unit *source, Unit *target); |
57020a3a LP |
778 | void unit_ref_unset(UnitRef *ref); |
779 | ||
7f7d01ed ZJS |
780 | #define UNIT_DEREF(ref) ((ref).target) |
781 | #define UNIT_ISSET(ref) (!!(ref).target) | |
57020a3a | 782 | |
598459ce | 783 | int unit_patch_contexts(Unit *u); |
e06c73cc | 784 | |
44a6b1b6 | 785 | ExecContext *unit_get_exec_context(Unit *u) _pure_; |
718db961 | 786 | KillContext *unit_get_kill_context(Unit *u) _pure_; |
4ad49000 | 787 | CGroupContext *unit_get_cgroup_context(Unit *u) _pure_; |
598459ce | 788 | |
613b411c LP |
789 | ExecRuntime *unit_get_exec_runtime(Unit *u) _pure_; |
790 | ||
791 | int unit_setup_exec_runtime(Unit *u); | |
29206d46 | 792 | int unit_setup_dynamic_creds(Unit *u); |
3ef63c31 | 793 | |
2e59b241 LP |
794 | char* unit_escape_setting(const char *s, UnitWriteFlags flags, char **buf); |
795 | char* unit_concat_strv(char **l, UnitWriteFlags flags); | |
b9ec9359 | 796 | |
2e59b241 LP |
797 | int unit_write_setting(Unit *u, UnitWriteFlags flags, const char *name, const char *data); |
798 | int unit_write_settingf(Unit *u, UnitWriteFlags mode, const char *name, const char *format, ...) _printf_(4,5); | |
b9ec9359 | 799 | |
db2cb23b | 800 | int unit_kill_context(Unit *u, KillContext *c, KillOperation k, pid_t main_pid, pid_t control_pid, bool main_pid_alien); |
cd2086fe | 801 | |
c2756a68 LP |
802 | int unit_make_transient(Unit *u); |
803 | ||
eef85c4a | 804 | int unit_require_mounts_for(Unit *u, const char *path, UnitDependencyMask mask); |
a57f7e2c | 805 | |
1c2e9646 LP |
806 | bool unit_type_supported(UnitType t); |
807 | ||
0f13f3bd LP |
808 | bool unit_is_pristine(Unit *u); |
809 | ||
a3c1168a LP |
810 | bool unit_is_unneeded(Unit *u); |
811 | ||
291d565a LP |
812 | pid_t unit_control_pid(Unit *u); |
813 | pid_t unit_main_pid(Unit *u); | |
814 | ||
8b4305c7 | 815 | void unit_warn_if_dir_nonempty(Unit *u, const char* where); |
25cd4964 | 816 | int unit_fail_if_noncanonical(Unit *u, const char* where); |
8b4305c7 | 817 | |
97a3f4ee | 818 | int unit_test_start_limit(Unit *u); |
07299350 | 819 | |
00d9ef85 LP |
820 | int unit_ref_uid_gid(Unit *u, uid_t uid, gid_t gid); |
821 | void unit_unref_uid_gid(Unit *u, bool destroy_now); | |
822 | ||
823 | void unit_notify_user_lookup(Unit *u, uid_t uid, gid_t gid); | |
824 | ||
4b58153d LP |
825 | int unit_set_invocation_id(Unit *u, sd_id128_t id); |
826 | int unit_acquire_invocation_id(Unit *u); | |
827 | ||
c891efaf FB |
828 | bool unit_shall_confirm_spawn(Unit *u); |
829 | ||
1ad6e8b3 | 830 | int unit_set_exec_params(Unit *s, ExecParameters *p); |
f0d47797 | 831 | |
4c253ed1 | 832 | int unit_fork_helper_process(Unit *u, const char *name, pid_t *ret); |
810ef318 | 833 | int unit_fork_and_watch_rm_rf(Unit *u, char **paths, pid_t *ret_pid); |
a79279c7 | 834 | |
c999cf38 LP |
835 | void unit_remove_dependencies(Unit *u, UnitDependencyMask mask); |
836 | ||
d3070fbd LP |
837 | void unit_export_state_files(Unit *u); |
838 | void unit_unlink_state_files(Unit *u); | |
839 | ||
3c7416b6 LP |
840 | int unit_prepare_exec(Unit *u); |
841 | ||
c53d2d54 | 842 | int unit_warn_leftover_processes(Unit *u); |
a4634b21 | 843 | |
bb2c7685 LP |
844 | bool unit_needs_console(Unit *u); |
845 | ||
f156e60c | 846 | const char *unit_label_path(const Unit *u); |
81e9871e | 847 | |
6592b975 LP |
848 | int unit_pid_attachable(Unit *unit, pid_t pid, sd_bus_error *error); |
849 | ||
28a2dfe8 ZJS |
850 | static inline bool unit_has_job_type(Unit *u, JobType type) { |
851 | return u && u->job && u->job->type == type; | |
852 | } | |
853 | ||
31cd5f63 AZ |
854 | /* unit_log_skip is for cases like ExecCondition= where a unit is considered "done" |
855 | * after some execution, rather than succeeded or failed. */ | |
856 | void unit_log_skip(Unit *u, const char *result); | |
523ee2d4 | 857 | void unit_log_success(Unit *u); |
7c047d74 | 858 | void unit_log_failure(Unit *u, const char *result); |
aac99f30 ZJS |
859 | static inline void unit_log_result(Unit *u, bool success, const char *result) { |
860 | if (success) | |
861 | unit_log_success(u); | |
862 | else | |
863 | unit_log_failure(u, result); | |
864 | } | |
865 | ||
5cc2cd1c | 866 | void unit_log_process_exit(Unit *u, const char *kind, const char *command, bool success, int code, int status); |
7c047d74 | 867 | |
7af67e9a LP |
868 | int unit_exit_status(Unit *u); |
869 | int unit_success_action_exit_status(Unit *u); | |
870 | int unit_failure_action_exit_status(Unit *u); | |
871 | ||
a4191c9f LP |
872 | int unit_test_trigger_loaded(Unit *u); |
873 | ||
95939aed | 874 | void unit_destroy_runtime_directory(Unit *u, const ExecContext *context); |
380dc8b0 LP |
875 | int unit_clean(Unit *u, ExecCleanMask mask); |
876 | int unit_can_clean(Unit *u, ExecCleanMask *ret_mask); | |
877 | ||
e8e581bf ZJS |
878 | /* Macros which append UNIT= or USER_UNIT= to the message */ |
879 | ||
f2341e0a LP |
880 | #define log_unit_full(unit, level, error, ...) \ |
881 | ({ \ | |
8dec4a9d | 882 | const Unit *_u = (unit); \ |
62c6bbbc ZJS |
883 | _u ? log_object_internal(level, error, PROJECT_FILE, __LINE__, __func__, _u->manager->unit_log_field, _u->id, _u->manager->invocation_log_field, _u->invocation_id_string, ##__VA_ARGS__) : \ |
884 | log_internal(level, error, PROJECT_FILE, __LINE__, __func__, ##__VA_ARGS__); \ | |
f2341e0a LP |
885 | }) |
886 | ||
887 | #define log_unit_debug(unit, ...) log_unit_full(unit, LOG_DEBUG, 0, ##__VA_ARGS__) | |
888 | #define log_unit_info(unit, ...) log_unit_full(unit, LOG_INFO, 0, ##__VA_ARGS__) | |
889 | #define log_unit_notice(unit, ...) log_unit_full(unit, LOG_NOTICE, 0, ##__VA_ARGS__) | |
890 | #define log_unit_warning(unit, ...) log_unit_full(unit, LOG_WARNING, 0, ##__VA_ARGS__) | |
891 | #define log_unit_error(unit, ...) log_unit_full(unit, LOG_ERR, 0, ##__VA_ARGS__) | |
892 | ||
893 | #define log_unit_debug_errno(unit, error, ...) log_unit_full(unit, LOG_DEBUG, error, ##__VA_ARGS__) | |
894 | #define log_unit_info_errno(unit, error, ...) log_unit_full(unit, LOG_INFO, error, ##__VA_ARGS__) | |
895 | #define log_unit_notice_errno(unit, error, ...) log_unit_full(unit, LOG_NOTICE, error, ##__VA_ARGS__) | |
896 | #define log_unit_warning_errno(unit, error, ...) log_unit_full(unit, LOG_WARNING, error, ##__VA_ARGS__) | |
897 | #define log_unit_error_errno(unit, error, ...) log_unit_full(unit, LOG_ERR, error, ##__VA_ARGS__) | |
898 | ||
899 | #define LOG_UNIT_MESSAGE(unit, fmt, ...) "MESSAGE=%s: " fmt, (unit)->id, ##__VA_ARGS__ | |
900 | #define LOG_UNIT_ID(unit) (unit)->manager->unit_log_format_string, (unit)->id | |
f1c50bec | 901 | #define LOG_UNIT_INVOCATION_ID(unit) (unit)->manager->invocation_log_format_string, (unit)->invocation_id_string |
5afe510c LP |
902 | |
903 | const char* collect_mode_to_string(CollectMode m) _const_; | |
904 | CollectMode collect_mode_from_string(const char *s) _pure_; |