1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
7 This file is part of systemd.
9 Copyright 2010 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU Lesser General Public License as published by
13 the Free Software Foundation; either version 2.1 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Lesser General Public License for more details.
21 You should have received a copy of the GNU Lesser General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 typedef struct Job Job;
30 typedef struct JobDependency JobDependency;
31 typedef struct JobBusClient JobBusClient;
32 typedef enum JobType JobType;
33 typedef enum JobState JobState;
34 typedef enum JobMode JobMode;
35 typedef enum JobResult JobResult;
42 /* Be careful when changing the job types! Adjust job_merging_table[] accordingly! */
44 JOB_START, /* if a unit does not support being started, we'll just wait until it becomes active */
49 JOB_RELOAD, /* if running reload */
50 JOB_RELOAD_OR_START, /* if running reload, if not running start */
52 /* Note that restarts are first treated like JOB_STOP, but
53 * then instead of finishing are patched to become
55 JOB_RESTART, /* if running stop, then start unconditionally */
56 JOB_TRY_RESTART, /* if running stop and then start */
59 _JOB_TYPE_INVALID = -1
66 _JOB_STATE_INVALID = -1
70 JOB_FAIL, /* Fail if a conflicting job is already queued */
71 JOB_REPLACE, /* Replace an existing conflicting job */
72 JOB_ISOLATE, /* Start a unit, and stop all others */
73 JOB_IGNORE_DEPENDENCIES, /* Ignore both requirement and ordering dependencies */
74 JOB_IGNORE_REQUIREMENTS, /* Ignore requirement dependencies */
76 _JOB_MODE_INVALID = -1
87 _JOB_RESULT_INVALID = -1
90 struct JobDependency {
91 /* Encodes that the 'subject' job needs the 'object' job in
92 * some way. This structure is used only while building a transaction. */
96 LIST_FIELDS(JobDependency, subject);
97 LIST_FIELDS(JobDependency, object);
103 struct JobBusClient {
104 LIST_FIELDS(JobBusClient, client);
105 /* Note that this bus object is not ref counted here. */
114 LIST_FIELDS(Job, transaction);
115 LIST_FIELDS(Job, run_queue);
116 LIST_FIELDS(Job, dbus_queue);
118 LIST_HEAD(JobDependency, subject_list);
119 LIST_HEAD(JobDependency, object_list);
121 /* Used for graph algs as a "I have been here" marker */
132 /* There can be more than one client, because of job merging. */
133 LIST_HEAD(JobBusClient, bus_client_list);
139 bool matters_to_anchor:1;
141 bool in_dbus_queue:1;
142 bool sent_dbus_new_signal:1;
144 bool forgot_bus_clients:1;
147 JobBusClient* job_bus_client_new(DBusConnection *connection, const char *name);
149 Job* job_new(Unit *unit, JobType type);
150 Job* job_new_raw(Unit *unit);
151 void job_free(Job *job);
152 Job* job_install(Job *j);
153 void job_install_deserialized(Job *j);
154 void job_uninstall(Job *j);
155 void job_dump(Job *j, FILE*f, const char *prefix);
156 int job_serialize(Job *j, FILE *f, FDSet *fds);
157 int job_deserialize(Job *j, FILE *f, FDSet *fds);
158 int job_coldplug(Job *j);
160 JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts);
161 void job_dependency_free(JobDependency *l);
163 int job_merge(Job *j, Job *other);
165 JobType job_type_lookup_merge(JobType a, JobType b);
167 static inline int job_type_merge(JobType *a, JobType b) {
168 JobType t = job_type_lookup_merge(*a, b);
175 static inline bool job_type_is_mergeable(JobType a, JobType b) {
176 return job_type_lookup_merge(a, b) >= 0;
179 static inline bool job_type_is_conflicting(JobType a, JobType b) {
180 return !job_type_is_mergeable(a, b);
183 static inline bool job_type_is_superset(JobType a, JobType b) {
184 /* Checks whether operation a is a "superset" of b in its actions */
185 return a == job_type_lookup_merge(a, b);
188 bool job_type_is_redundant(JobType a, UnitActiveState b);
190 bool job_is_runnable(Job *j);
192 void job_add_to_run_queue(Job *j);
193 void job_add_to_dbus_queue(Job *j);
195 int job_start_timer(Job *j);
196 void job_timer_event(Job *j, uint64_t n_elapsed, Watch *w);
198 int job_run_and_invalidate(Job *j);
199 int job_finish_and_invalidate(Job *j, JobResult result, bool recursive);
201 char *job_dbus_path(Job *j);
203 const char* job_type_to_string(JobType t);
204 JobType job_type_from_string(const char *s);
206 const char* job_state_to_string(JobState t);
207 JobState job_state_from_string(const char *s);
209 const char* job_mode_to_string(JobMode t);
210 JobMode job_mode_from_string(const char *s);
212 const char* job_result_to_string(JobResult t);
213 JobResult job_result_from_string(const char *s);