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663996b3 MS |
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 | 28 | typedef enum UnitType { |
663996b3 MS |
29 | UNIT_SERVICE = 0, |
30 | UNIT_SOCKET, | |
60f067b4 | 31 | UNIT_BUSNAME, |
663996b3 MS |
32 | UNIT_TARGET, |
33 | UNIT_DEVICE, | |
34 | UNIT_MOUNT, | |
35 | UNIT_AUTOMOUNT, | |
663996b3 | 36 | UNIT_SWAP, |
60f067b4 | 37 | UNIT_TIMER, |
663996b3 | 38 | UNIT_PATH, |
14228c0d MB |
39 | UNIT_SLICE, |
40 | UNIT_SCOPE, | |
663996b3 MS |
41 | _UNIT_TYPE_MAX, |
42 | _UNIT_TYPE_INVALID = -1 | |
6300502b | 43 | } UnitType; |
663996b3 | 44 | |
6300502b | 45 | typedef enum UnitLoadState { |
663996b3 MS |
46 | UNIT_STUB = 0, |
47 | UNIT_LOADED, | |
14228c0d | 48 | UNIT_NOT_FOUND, |
663996b3 MS |
49 | UNIT_ERROR, |
50 | UNIT_MERGED, | |
51 | UNIT_MASKED, | |
52 | _UNIT_LOAD_STATE_MAX, | |
53 | _UNIT_LOAD_STATE_INVALID = -1 | |
6300502b MP |
54 | } UnitLoadState; |
55 | ||
56 | typedef 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 | ||
67 | typedef 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 | ||
76 | typedef 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 */ | |
91 | typedef 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 | ||
99 | typedef 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 | ||
117 | typedef 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 | ||
126 | typedef 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 | ||
137 | typedef 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 | ||
158 | typedef enum SliceState { | |
159 | SLICE_DEAD, | |
160 | SLICE_ACTIVE, | |
161 | _SLICE_STATE_MAX, | |
162 | _SLICE_STATE_INVALID = -1 | |
163 | } SliceState; | |
164 | ||
6300502b MP |
165 | typedef 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 | ||
183 | typedef 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 | ||
198 | ||
199 | typedef enum TargetState { | |
200 | TARGET_DEAD, | |
201 | TARGET_ACTIVE, | |
202 | _TARGET_STATE_MAX, | |
203 | _TARGET_STATE_INVALID = -1 | |
204 | } TargetState; | |
205 | ||
206 | typedef enum TimerState { | |
207 | TIMER_DEAD, | |
208 | TIMER_WAITING, | |
209 | TIMER_RUNNING, | |
210 | TIMER_ELAPSED, | |
211 | TIMER_FAILED, | |
212 | _TIMER_STATE_MAX, | |
213 | _TIMER_STATE_INVALID = -1 | |
214 | } TimerState; | |
215 | ||
216 | typedef enum UnitDependency { | |
5eef597e MP |
217 | /* Positive dependencies */ |
218 | UNIT_REQUIRES, | |
5eef597e | 219 | UNIT_REQUISITE, |
5eef597e MP |
220 | UNIT_WANTS, |
221 | UNIT_BINDS_TO, | |
222 | UNIT_PART_OF, | |
223 | ||
224 | /* Inverse of the above */ | |
e3bff60a | 225 | UNIT_REQUIRED_BY, /* inverse of 'requires' is 'required_by' */ |
e3bff60a | 226 | UNIT_REQUISITE_OF, /* inverse of 'requisite' is 'requisite_of' */ |
5eef597e MP |
227 | UNIT_WANTED_BY, /* inverse of 'wants' */ |
228 | UNIT_BOUND_BY, /* inverse of 'binds_to' */ | |
229 | UNIT_CONSISTS_OF, /* inverse of 'part_of' */ | |
230 | ||
231 | /* Negative dependencies */ | |
232 | UNIT_CONFLICTS, /* inverse of 'conflicts' is 'conflicted_by' */ | |
233 | UNIT_CONFLICTED_BY, | |
234 | ||
235 | /* Order */ | |
236 | UNIT_BEFORE, /* inverse of 'before' is 'after' and vice versa */ | |
237 | UNIT_AFTER, | |
238 | ||
239 | /* On Failure */ | |
240 | UNIT_ON_FAILURE, | |
241 | ||
242 | /* Triggers (i.e. a socket triggers a service) */ | |
243 | UNIT_TRIGGERS, | |
244 | UNIT_TRIGGERED_BY, | |
245 | ||
246 | /* Propagate reloads */ | |
247 | UNIT_PROPAGATES_RELOAD_TO, | |
248 | UNIT_RELOAD_PROPAGATED_FROM, | |
249 | ||
250 | /* Joins namespace of */ | |
251 | UNIT_JOINS_NAMESPACE_OF, | |
252 | ||
253 | /* Reference information for GC logic */ | |
254 | UNIT_REFERENCES, /* Inverse of 'references' is 'referenced_by' */ | |
255 | UNIT_REFERENCED_BY, | |
256 | ||
257 | _UNIT_DEPENDENCY_MAX, | |
258 | _UNIT_DEPENDENCY_INVALID = -1 | |
6300502b | 259 | } UnitDependency; |
5eef597e | 260 | |
e3bff60a MP |
261 | typedef enum UnitNameFlags { |
262 | UNIT_NAME_PLAIN = 1, /* Allow foo.service */ | |
263 | UNIT_NAME_INSTANCE = 2, /* Allow foo@bar.service */ | |
264 | UNIT_NAME_TEMPLATE = 4, /* Allow foo@.service */ | |
265 | UNIT_NAME_ANY = UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE, | |
266 | } UnitNameFlags; | |
663996b3 | 267 | |
e3bff60a | 268 | bool unit_name_is_valid(const char *n, UnitNameFlags flags) _pure_; |
663996b3 MS |
269 | bool unit_prefix_is_valid(const char *p) _pure_; |
270 | bool unit_instance_is_valid(const char *i) _pure_; | |
e3bff60a MP |
271 | bool unit_suffix_is_valid(const char *s) _pure_; |
272 | ||
273 | static inline int unit_prefix_and_instance_is_valid(const char *p) { | |
274 | /* For prefix+instance and instance the same rules apply */ | |
275 | return unit_instance_is_valid(p); | |
276 | } | |
277 | ||
278 | int unit_name_to_prefix(const char *n, char **prefix); | |
279 | int unit_name_to_instance(const char *n, char **instance); | |
280 | int unit_name_to_prefix_and_instance(const char *n, char **ret); | |
663996b3 MS |
281 | |
282 | UnitType unit_name_to_type(const char *n) _pure_; | |
283 | ||
e3bff60a | 284 | int unit_name_change_suffix(const char *n, const char *suffix, char **ret); |
663996b3 | 285 | |
e3bff60a | 286 | int unit_name_build(const char *prefix, const char *instance, const char *suffix, char **ret); |
663996b3 MS |
287 | |
288 | char *unit_name_escape(const char *f); | |
e3bff60a MP |
289 | int unit_name_unescape(const char *f, char **ret); |
290 | int unit_name_path_escape(const char *f, char **ret); | |
291 | int unit_name_path_unescape(const char *f, char **ret); | |
663996b3 | 292 | |
e3bff60a | 293 | int unit_name_replace_instance(const char *f, const char *i, char **ret); |
663996b3 | 294 | |
e3bff60a | 295 | int unit_name_template(const char *f, char **ret); |
663996b3 | 296 | |
e3bff60a MP |
297 | int unit_name_from_path(const char *path, const char *suffix, char **ret); |
298 | int unit_name_from_path_instance(const char *prefix, const char *path, const char *suffix, char **ret); | |
299 | int unit_name_to_path(const char *name, char **ret); | |
663996b3 MS |
300 | |
301 | char *unit_dbus_path_from_name(const char *name); | |
14228c0d | 302 | int unit_name_from_dbus_path(const char *path, char **name); |
663996b3 | 303 | |
d9dfd233 MP |
304 | const char* unit_dbus_interface_from_type(UnitType t); |
305 | const char *unit_dbus_interface_from_name(const char *name); | |
306 | ||
e3bff60a MP |
307 | typedef enum UnitNameMangle { |
308 | UNIT_NAME_NOGLOB, | |
309 | UNIT_NAME_GLOB, | |
310 | } UnitNameMangle; | |
311 | ||
312 | int unit_name_mangle_with_suffix(const char *name, UnitNameMangle allow_globs, const char *suffix, char **ret); | |
60f067b4 | 313 | |
e3bff60a MP |
314 | static inline int unit_name_mangle(const char *name, UnitNameMangle allow_globs, char **ret) { |
315 | return unit_name_mangle_with_suffix(name, allow_globs, ".service", ret); | |
f47781d8 | 316 | } |
14228c0d | 317 | |
e3bff60a MP |
318 | int slice_build_parent_slice(const char *slice, char **ret); |
319 | int slice_build_subslice(const char *slice, const char*name, char **subslice); | |
320 | bool slice_name_is_valid(const char *name); | |
321 | ||
322 | const char *unit_type_to_string(UnitType i) _const_; | |
323 | UnitType unit_type_from_string(const char *s) _pure_; | |
324 | ||
325 | const char *unit_load_state_to_string(UnitLoadState i) _const_; | |
326 | UnitLoadState unit_load_state_from_string(const char *s) _pure_; | |
5eef597e | 327 | |
6300502b MP |
328 | const char *unit_active_state_to_string(UnitActiveState i) _const_; |
329 | UnitActiveState unit_active_state_from_string(const char *s) _pure_; | |
330 | ||
331 | const char* automount_state_to_string(AutomountState i) _const_; | |
332 | AutomountState automount_state_from_string(const char *s) _pure_; | |
333 | ||
334 | const char* busname_state_to_string(BusNameState i) _const_; | |
335 | BusNameState busname_state_from_string(const char *s) _pure_; | |
336 | ||
337 | const char* device_state_to_string(DeviceState i) _const_; | |
338 | DeviceState device_state_from_string(const char *s) _pure_; | |
339 | ||
340 | const char* mount_state_to_string(MountState i) _const_; | |
341 | MountState mount_state_from_string(const char *s) _pure_; | |
342 | ||
343 | const char* path_state_to_string(PathState i) _const_; | |
344 | PathState path_state_from_string(const char *s) _pure_; | |
345 | ||
346 | const char* scope_state_to_string(ScopeState i) _const_; | |
347 | ScopeState scope_state_from_string(const char *s) _pure_; | |
348 | ||
349 | const char* service_state_to_string(ServiceState i) _const_; | |
350 | ServiceState service_state_from_string(const char *s) _pure_; | |
351 | ||
352 | const char* slice_state_to_string(SliceState i) _const_; | |
353 | SliceState slice_state_from_string(const char *s) _pure_; | |
354 | ||
6300502b MP |
355 | const char* socket_state_to_string(SocketState i) _const_; |
356 | SocketState socket_state_from_string(const char *s) _pure_; | |
357 | ||
358 | const char* swap_state_to_string(SwapState i) _const_; | |
359 | SwapState swap_state_from_string(const char *s) _pure_; | |
360 | ||
361 | const char* target_state_to_string(TargetState i) _const_; | |
362 | TargetState target_state_from_string(const char *s) _pure_; | |
363 | ||
364 | const char *timer_state_to_string(TimerState i) _const_; | |
365 | TimerState timer_state_from_string(const char *s) _pure_; | |
366 | ||
5eef597e MP |
367 | const char *unit_dependency_to_string(UnitDependency i) _const_; |
368 | UnitDependency unit_dependency_from_string(const char *s) _pure_; |