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1#pragma once
2
3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
22#include <stdbool.h>
23
24#include "macro.h"
25
26#define UNIT_NAME_MAX 256
27
6300502b 28typedef enum UnitType {
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29 UNIT_SERVICE = 0,
30 UNIT_SOCKET,
60f067b4 31 UNIT_BUSNAME,
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32 UNIT_TARGET,
33 UNIT_DEVICE,
34 UNIT_MOUNT,
35 UNIT_AUTOMOUNT,
663996b3 36 UNIT_SWAP,
60f067b4 37 UNIT_TIMER,
663996b3 38 UNIT_PATH,
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39 UNIT_SLICE,
40 UNIT_SCOPE,
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41 _UNIT_TYPE_MAX,
42 _UNIT_TYPE_INVALID = -1
6300502b 43} UnitType;
663996b3 44
6300502b 45typedef enum UnitLoadState {
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46 UNIT_STUB = 0,
47 UNIT_LOADED,
14228c0d 48 UNIT_NOT_FOUND,
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49 UNIT_ERROR,
50 UNIT_MERGED,
51 UNIT_MASKED,
52 _UNIT_LOAD_STATE_MAX,
53 _UNIT_LOAD_STATE_INVALID = -1
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54} UnitLoadState;
55
56typedef enum UnitActiveState {
57 UNIT_ACTIVE,
58 UNIT_RELOADING,
59 UNIT_INACTIVE,
60 UNIT_FAILED,
61 UNIT_ACTIVATING,
62 UNIT_DEACTIVATING,
63 _UNIT_ACTIVE_STATE_MAX,
64 _UNIT_ACTIVE_STATE_INVALID = -1
65} UnitActiveState;
66
67typedef enum AutomountState {
68 AUTOMOUNT_DEAD,
69 AUTOMOUNT_WAITING,
70 AUTOMOUNT_RUNNING,
71 AUTOMOUNT_FAILED,
72 _AUTOMOUNT_STATE_MAX,
73 _AUTOMOUNT_STATE_INVALID = -1
74} AutomountState;
75
76typedef enum BusNameState {
77 BUSNAME_DEAD,
78 BUSNAME_MAKING,
79 BUSNAME_REGISTERED,
80 BUSNAME_LISTENING,
81 BUSNAME_RUNNING,
82 BUSNAME_SIGTERM,
83 BUSNAME_SIGKILL,
84 BUSNAME_FAILED,
85 _BUSNAME_STATE_MAX,
86 _BUSNAME_STATE_INVALID = -1
87} BusNameState;
88
89/* We simply watch devices, we cannot plug/unplug them. That
90 * simplifies the state engine greatly */
91typedef enum DeviceState {
92 DEVICE_DEAD,
93 DEVICE_TENTATIVE, /* mounted or swapped, but not (yet) announced by udev */
94 DEVICE_PLUGGED, /* announced by udev */
95 _DEVICE_STATE_MAX,
96 _DEVICE_STATE_INVALID = -1
97} DeviceState;
98
99typedef enum MountState {
100 MOUNT_DEAD,
101 MOUNT_MOUNTING, /* /usr/bin/mount is running, but the mount is not done yet. */
102 MOUNT_MOUNTING_DONE, /* /usr/bin/mount is running, and the mount is done. */
103 MOUNT_MOUNTED,
104 MOUNT_REMOUNTING,
105 MOUNT_UNMOUNTING,
106 MOUNT_MOUNTING_SIGTERM,
107 MOUNT_MOUNTING_SIGKILL,
108 MOUNT_REMOUNTING_SIGTERM,
109 MOUNT_REMOUNTING_SIGKILL,
110 MOUNT_UNMOUNTING_SIGTERM,
111 MOUNT_UNMOUNTING_SIGKILL,
112 MOUNT_FAILED,
113 _MOUNT_STATE_MAX,
114 _MOUNT_STATE_INVALID = -1
115} MountState;
116
117typedef enum PathState {
118 PATH_DEAD,
119 PATH_WAITING,
120 PATH_RUNNING,
121 PATH_FAILED,
122 _PATH_STATE_MAX,
123 _PATH_STATE_INVALID = -1
124} PathState;
125
126typedef enum ScopeState {
127 SCOPE_DEAD,
128 SCOPE_RUNNING,
129 SCOPE_ABANDONED,
130 SCOPE_STOP_SIGTERM,
131 SCOPE_STOP_SIGKILL,
132 SCOPE_FAILED,
133 _SCOPE_STATE_MAX,
134 _SCOPE_STATE_INVALID = -1
135} ScopeState;
136
137typedef enum ServiceState {
138 SERVICE_DEAD,
139 SERVICE_START_PRE,
140 SERVICE_START,
141 SERVICE_START_POST,
142 SERVICE_RUNNING,
143 SERVICE_EXITED, /* Nothing is running anymore, but RemainAfterExit is true hence this is OK */
144 SERVICE_RELOAD,
145 SERVICE_STOP, /* No STOP_PRE state, instead just register multiple STOP executables */
146 SERVICE_STOP_SIGABRT, /* Watchdog timeout */
147 SERVICE_STOP_SIGTERM,
148 SERVICE_STOP_SIGKILL,
149 SERVICE_STOP_POST,
150 SERVICE_FINAL_SIGTERM, /* In case the STOP_POST executable hangs, we shoot that down, too */
151 SERVICE_FINAL_SIGKILL,
152 SERVICE_FAILED,
153 SERVICE_AUTO_RESTART,
154 _SERVICE_STATE_MAX,
155 _SERVICE_STATE_INVALID = -1
156} ServiceState;
157
158typedef enum SliceState {
159 SLICE_DEAD,
160 SLICE_ACTIVE,
161 _SLICE_STATE_MAX,
162 _SLICE_STATE_INVALID = -1
163} SliceState;
164
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165typedef enum SocketState {
166 SOCKET_DEAD,
167 SOCKET_START_PRE,
168 SOCKET_START_CHOWN,
169 SOCKET_START_POST,
170 SOCKET_LISTENING,
171 SOCKET_RUNNING,
172 SOCKET_STOP_PRE,
173 SOCKET_STOP_PRE_SIGTERM,
174 SOCKET_STOP_PRE_SIGKILL,
175 SOCKET_STOP_POST,
176 SOCKET_FINAL_SIGTERM,
177 SOCKET_FINAL_SIGKILL,
178 SOCKET_FAILED,
179 _SOCKET_STATE_MAX,
180 _SOCKET_STATE_INVALID = -1
181} SocketState;
182
183typedef enum SwapState {
184 SWAP_DEAD,
185 SWAP_ACTIVATING, /* /sbin/swapon is running, but the swap not yet enabled. */
186 SWAP_ACTIVATING_DONE, /* /sbin/swapon is running, and the swap is done. */
187 SWAP_ACTIVE,
188 SWAP_DEACTIVATING,
189 SWAP_ACTIVATING_SIGTERM,
190 SWAP_ACTIVATING_SIGKILL,
191 SWAP_DEACTIVATING_SIGTERM,
192 SWAP_DEACTIVATING_SIGKILL,
193 SWAP_FAILED,
194 _SWAP_STATE_MAX,
195 _SWAP_STATE_INVALID = -1
196} SwapState;
197
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198typedef enum TargetState {
199 TARGET_DEAD,
200 TARGET_ACTIVE,
201 _TARGET_STATE_MAX,
202 _TARGET_STATE_INVALID = -1
203} TargetState;
204
205typedef enum TimerState {
206 TIMER_DEAD,
207 TIMER_WAITING,
208 TIMER_RUNNING,
209 TIMER_ELAPSED,
210 TIMER_FAILED,
211 _TIMER_STATE_MAX,
212 _TIMER_STATE_INVALID = -1
213} TimerState;
214
215typedef enum UnitDependency {
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216 /* Positive dependencies */
217 UNIT_REQUIRES,
5eef597e 218 UNIT_REQUISITE,
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219 UNIT_WANTS,
220 UNIT_BINDS_TO,
221 UNIT_PART_OF,
222
223 /* Inverse of the above */
e3bff60a 224 UNIT_REQUIRED_BY, /* inverse of 'requires' is 'required_by' */
e3bff60a 225 UNIT_REQUISITE_OF, /* inverse of 'requisite' is 'requisite_of' */
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226 UNIT_WANTED_BY, /* inverse of 'wants' */
227 UNIT_BOUND_BY, /* inverse of 'binds_to' */
228 UNIT_CONSISTS_OF, /* inverse of 'part_of' */
229
230 /* Negative dependencies */
231 UNIT_CONFLICTS, /* inverse of 'conflicts' is 'conflicted_by' */
232 UNIT_CONFLICTED_BY,
233
234 /* Order */
235 UNIT_BEFORE, /* inverse of 'before' is 'after' and vice versa */
236 UNIT_AFTER,
237
238 /* On Failure */
239 UNIT_ON_FAILURE,
240
241 /* Triggers (i.e. a socket triggers a service) */
242 UNIT_TRIGGERS,
243 UNIT_TRIGGERED_BY,
244
245 /* Propagate reloads */
246 UNIT_PROPAGATES_RELOAD_TO,
247 UNIT_RELOAD_PROPAGATED_FROM,
248
249 /* Joins namespace of */
250 UNIT_JOINS_NAMESPACE_OF,
251
252 /* Reference information for GC logic */
253 UNIT_REFERENCES, /* Inverse of 'references' is 'referenced_by' */
254 UNIT_REFERENCED_BY,
255
256 _UNIT_DEPENDENCY_MAX,
257 _UNIT_DEPENDENCY_INVALID = -1
6300502b 258} UnitDependency;
5eef597e 259
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260typedef enum UnitNameFlags {
261 UNIT_NAME_PLAIN = 1, /* Allow foo.service */
262 UNIT_NAME_INSTANCE = 2, /* Allow foo@bar.service */
263 UNIT_NAME_TEMPLATE = 4, /* Allow foo@.service */
264 UNIT_NAME_ANY = UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE,
265} UnitNameFlags;
663996b3 266
e3bff60a 267bool unit_name_is_valid(const char *n, UnitNameFlags flags) _pure_;
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268bool unit_prefix_is_valid(const char *p) _pure_;
269bool unit_instance_is_valid(const char *i) _pure_;
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270bool unit_suffix_is_valid(const char *s) _pure_;
271
272static inline int unit_prefix_and_instance_is_valid(const char *p) {
273 /* For prefix+instance and instance the same rules apply */
274 return unit_instance_is_valid(p);
275}
276
277int unit_name_to_prefix(const char *n, char **prefix);
278int unit_name_to_instance(const char *n, char **instance);
279int unit_name_to_prefix_and_instance(const char *n, char **ret);
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280
281UnitType unit_name_to_type(const char *n) _pure_;
282
e3bff60a 283int unit_name_change_suffix(const char *n, const char *suffix, char **ret);
663996b3 284
e3bff60a 285int unit_name_build(const char *prefix, const char *instance, const char *suffix, char **ret);
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286
287char *unit_name_escape(const char *f);
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288int unit_name_unescape(const char *f, char **ret);
289int unit_name_path_escape(const char *f, char **ret);
290int unit_name_path_unescape(const char *f, char **ret);
663996b3 291
e3bff60a 292int unit_name_replace_instance(const char *f, const char *i, char **ret);
663996b3 293
e3bff60a 294int unit_name_template(const char *f, char **ret);
663996b3 295
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296int unit_name_from_path(const char *path, const char *suffix, char **ret);
297int unit_name_from_path_instance(const char *prefix, const char *path, const char *suffix, char **ret);
298int unit_name_to_path(const char *name, char **ret);
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299
300char *unit_dbus_path_from_name(const char *name);
14228c0d 301int unit_name_from_dbus_path(const char *path, char **name);
663996b3 302
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303const char* unit_dbus_interface_from_type(UnitType t);
304const char *unit_dbus_interface_from_name(const char *name);
305
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306typedef enum UnitNameMangle {
307 UNIT_NAME_NOGLOB,
308 UNIT_NAME_GLOB,
309} UnitNameMangle;
310
311int unit_name_mangle_with_suffix(const char *name, UnitNameMangle allow_globs, const char *suffix, char **ret);
60f067b4 312
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313static inline int unit_name_mangle(const char *name, UnitNameMangle allow_globs, char **ret) {
314 return unit_name_mangle_with_suffix(name, allow_globs, ".service", ret);
f47781d8 315}
14228c0d 316
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317int slice_build_parent_slice(const char *slice, char **ret);
318int slice_build_subslice(const char *slice, const char*name, char **subslice);
319bool slice_name_is_valid(const char *name);
320
321const char *unit_type_to_string(UnitType i) _const_;
322UnitType unit_type_from_string(const char *s) _pure_;
323
324const char *unit_load_state_to_string(UnitLoadState i) _const_;
325UnitLoadState unit_load_state_from_string(const char *s) _pure_;
5eef597e 326
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327const char *unit_active_state_to_string(UnitActiveState i) _const_;
328UnitActiveState unit_active_state_from_string(const char *s) _pure_;
329
330const char* automount_state_to_string(AutomountState i) _const_;
331AutomountState automount_state_from_string(const char *s) _pure_;
332
333const char* busname_state_to_string(BusNameState i) _const_;
334BusNameState busname_state_from_string(const char *s) _pure_;
335
336const char* device_state_to_string(DeviceState i) _const_;
337DeviceState device_state_from_string(const char *s) _pure_;
338
339const char* mount_state_to_string(MountState i) _const_;
340MountState mount_state_from_string(const char *s) _pure_;
341
342const char* path_state_to_string(PathState i) _const_;
343PathState path_state_from_string(const char *s) _pure_;
344
345const char* scope_state_to_string(ScopeState i) _const_;
346ScopeState scope_state_from_string(const char *s) _pure_;
347
348const char* service_state_to_string(ServiceState i) _const_;
349ServiceState service_state_from_string(const char *s) _pure_;
350
351const char* slice_state_to_string(SliceState i) _const_;
352SliceState slice_state_from_string(const char *s) _pure_;
353
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354const char* socket_state_to_string(SocketState i) _const_;
355SocketState socket_state_from_string(const char *s) _pure_;
356
357const char* swap_state_to_string(SwapState i) _const_;
358SwapState swap_state_from_string(const char *s) _pure_;
359
360const char* target_state_to_string(TargetState i) _const_;
361TargetState target_state_from_string(const char *s) _pure_;
362
363const char *timer_state_to_string(TimerState i) _const_;
364TimerState timer_state_from_string(const char *s) _pure_;
365
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366const char *unit_dependency_to_string(UnitDependency i) _const_;
367UnitDependency unit_dependency_from_string(const char *s) _pure_;