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60918275 LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
2 | ||
3 | #ifndef foomanagerhfoo | |
4 | #define foomanagerhfoo | |
5 | ||
a7334b09 LP |
6 | /*** |
7 | This file is part of systemd. | |
8 | ||
9 | Copyright 2010 Lennart Poettering | |
10 | ||
11 | systemd is free software; you can redistribute it and/or modify it | |
12 | under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
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 | General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
23 | ***/ | |
24 | ||
60918275 LP |
25 | #include <stdbool.h> |
26 | #include <inttypes.h> | |
a66d02c3 | 27 | #include <stdio.h> |
60918275 | 28 | |
ea430986 LP |
29 | #include <dbus/dbus.h> |
30 | ||
60918275 | 31 | typedef struct Manager Manager; |
acbb0225 LP |
32 | typedef enum WatchType WatchType; |
33 | typedef struct Watch Watch; | |
34 | ||
dfcd764e LP |
35 | typedef enum ManagerRunningAs { |
36 | MANAGER_INIT, /* root and pid=1 */ | |
37 | MANAGER_SYSTEM, /* root and pid!=1 */ | |
036643a2 | 38 | MANAGER_SESSION, /* non-root */ |
dfcd764e LP |
39 | _MANAGER_RUNNING_AS_MAX, |
40 | _MANAGER_RUNNING_AS_INVALID = -1 | |
41 | } ManagerRunningAs; | |
42 | ||
acbb0225 LP |
43 | enum WatchType { |
44 | WATCH_INVALID, | |
ef734fd6 | 45 | WATCH_SIGNAL, |
acbb0225 | 46 | WATCH_FD, |
ef734fd6 | 47 | WATCH_TIMER, |
f94ea366 | 48 | WATCH_MOUNT, |
ea430986 LP |
49 | WATCH_UDEV, |
50 | WATCH_DBUS_WATCH, | |
51 | WATCH_DBUS_TIMEOUT | |
acbb0225 LP |
52 | }; |
53 | ||
54 | struct Watch { | |
55 | int fd; | |
56 | WatchType type; | |
ea430986 LP |
57 | bool fd_is_dupped; |
58 | union { | |
59 | union Unit *unit; | |
60 | DBusWatch *bus_watch; | |
61 | DBusTimeout *bus_timeout; | |
62 | } data; | |
acbb0225 | 63 | }; |
60918275 | 64 | |
87f0e418 | 65 | #include "unit.h" |
60918275 LP |
66 | #include "job.h" |
67 | #include "hashmap.h" | |
68 | #include "list.h" | |
69 | #include "set.h" | |
ea430986 | 70 | #include "dbus.h" |
60918275 | 71 | |
f50e0a01 LP |
72 | #define SPECIAL_DEFAULT_TARGET "default.target" |
73 | #define SPECIAL_SYSLOG_SERVICE "syslog.service" | |
74 | #define SPECIAL_DBUS_SERVICE "messagebus.service" | |
75 | #define SPECIAL_LOGGER_SOCKET "systemd-logger.socket" | |
76 | #define SPECIAL_KBREQUEST_TARGET "kbrequest.target" | |
77 | #define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target" | |
2c4104f0 LP |
78 | #define SPECIAL_LOCAL_FS_TARGET "local-fs.target" |
79 | #define SPECIAL_NETWORK_TARGET "network.target" | |
80 | #define SPECIAL_NSS_LOOKUP_TARGET "nss-lookup.target" /* LSB's $named */ | |
81 | #define SPECIAL_RPCBIND_TARGET "rpcbind.target" /* LSB's $portmap */ | |
82 | #define SPECIAL_REMOTE_FS_TARGET "remote-fs.target" | |
83 | #define SPECIAL_SYSLOG_TARGET "syslog.target" /* Should pull in syslog.socket or syslog.service */ | |
84 | #define SPECIAL_RTC_SET_TARGET "rtc-set.target" /* LSB's $time */ | |
0fd030be | 85 | #define SPECIAL_SYSINIT_SERVICE "sysinit.service" |
2c4104f0 LP |
86 | |
87 | /* For SysV compatibility. Usually an alias for a saner target. On | |
88 | * SysV-free systems this doesn't exist. */ | |
89 | #define SPECIAL_RUNLEVEL0_TARGET "runlevel0.target" | |
90 | #define SPECIAL_RUNLEVEL1_TARGET "runlevel1.target" | |
91 | #define SPECIAL_RUNLEVEL2_TARGET "runlevel2.target" | |
92 | #define SPECIAL_RUNLEVEL3_TARGET "runlevel3.target" | |
93 | #define SPECIAL_RUNLEVEL4_TARGET "runlevel4.target" | |
94 | #define SPECIAL_RUNLEVEL5_TARGET "runlevel5.target" | |
95 | #define SPECIAL_RUNLEVEL6_TARGET "runlevel6.target" | |
ce578209 | 96 | |
60918275 | 97 | struct Manager { |
dfcd764e LP |
98 | /* In which mode are we running */ |
99 | ManagerRunningAs running_as; | |
100 | ||
60918275 LP |
101 | uint32_t current_job_id; |
102 | ||
87f0e418 | 103 | /* Note that the set of units we know of is allowed to be |
87d1515d LP |
104 | * incosistent. However the subset of it that is loaded may |
105 | * not, and the list of jobs may neither. */ | |
106 | ||
87f0e418 LP |
107 | /* Active jobs and units */ |
108 | Hashmap *units; /* name string => Unit object n:1 */ | |
60918275 LP |
109 | Hashmap *jobs; /* job id => Job object 1:1 */ |
110 | ||
ef734fd6 LP |
111 | /* To make it easy to iterate through the units of a specific |
112 | * type we maintain a per type linked list */ | |
113 | LIST_HEAD(Meta, units_per_type[_UNIT_TYPE_MAX]); | |
114 | ||
87f0e418 | 115 | /* Units that need to be loaded */ |
60918275 LP |
116 | LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */ |
117 | ||
034c6ed7 LP |
118 | /* Jobs that need to be run */ |
119 | LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */ | |
120 | ||
c1e1601e LP |
121 | /* Units and jobs that have not yet been announced via |
122 | * D-Bus. When something about a job changes it is added here | |
123 | * if it is not in there yet. This allows easy coalescing of | |
124 | * D-Bus change signals. */ | |
125 | LIST_HEAD(Meta, dbus_unit_queue); | |
126 | LIST_HEAD(Job, dbus_job_queue); | |
127 | ||
23a177ef LP |
128 | LIST_HEAD(Meta, cleanup_queue); |
129 | ||
e5b5ae50 | 130 | /* Jobs to be added */ |
87f0e418 | 131 | Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */ |
e5b5ae50 | 132 | JobDependency *transaction_anchor; |
223dabab LP |
133 | |
134 | bool dispatching_load_queue:1; | |
034c6ed7 | 135 | bool dispatching_run_queue:1; |
c1e1601e | 136 | bool dispatching_dbus_queue:1; |
5cb5a6ff | 137 | |
f278026d | 138 | bool request_api_bus_dispatch:1; |
8e274523 | 139 | bool request_system_bus_dispatch:1; |
ea430986 | 140 | |
87f0e418 | 141 | Hashmap *watch_pids; /* pid => Unit object n:1 */ |
9152c765 LP |
142 | |
143 | int epoll_fd; | |
acbb0225 LP |
144 | |
145 | Watch signal_watch; | |
ce578209 | 146 | |
036643a2 LP |
147 | char **unit_path; |
148 | char **sysvinit_path; | |
149 | ||
ef734fd6 | 150 | /* Data specific to the device subsystem */ |
25ac040b | 151 | struct udev* udev; |
f94ea366 LP |
152 | struct udev_monitor* udev_monitor; |
153 | Watch udev_watch; | |
ef734fd6 LP |
154 | |
155 | /* Data specific to the mount subsystem */ | |
156 | FILE *proc_self_mountinfo; | |
157 | Watch mount_watch; | |
ea430986 LP |
158 | |
159 | /* Data specific to the D-Bus subsystem */ | |
f278026d | 160 | DBusConnection *api_bus, *system_bus; |
c1e1601e | 161 | Set *subscribed; |
8e274523 LP |
162 | |
163 | /* Data specific to the cgroup subsystem */ | |
164 | Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */ | |
165 | char *cgroup_controller; | |
166 | char *cgroup_hierarchy; | |
60918275 LP |
167 | }; |
168 | ||
a5dab5ce | 169 | int manager_new(ManagerRunningAs running_as, Manager **m); |
60918275 LP |
170 | void manager_free(Manager *m); |
171 | ||
f50e0a01 LP |
172 | int manager_coldplug(Manager *m); |
173 | ||
60918275 | 174 | Job *manager_get_job(Manager *m, uint32_t id); |
87f0e418 | 175 | Unit *manager_get_unit(Manager *m, const char *name); |
60918275 | 176 | |
ea430986 | 177 | int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u); |
86fbf370 | 178 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); |
ea430986 | 179 | |
0301abf4 | 180 | int manager_load_unit(Manager *m, const char *path_or_name, Unit **_ret); |
87f0e418 | 181 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret); |
60918275 | 182 | |
87f0e418 | 183 | void manager_dump_units(Manager *s, FILE *f, const char *prefix); |
cea8e32e | 184 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); |
a66d02c3 | 185 | |
23a177ef | 186 | void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies); |
e5b5ae50 | 187 | |
7fad411c LP |
188 | void manager_clear_jobs(Manager *m); |
189 | ||
c1e1601e LP |
190 | unsigned manager_dispatch_load_queue(Manager *m); |
191 | unsigned manager_dispatch_run_queue(Manager *m); | |
192 | unsigned manager_dispatch_dbus_queue(Manager *m); | |
f50e0a01 | 193 | |
9152c765 | 194 | int manager_loop(Manager *m); |
83c60c9f | 195 | |
dfcd764e LP |
196 | const char *manager_running_as_to_string(ManagerRunningAs i); |
197 | ManagerRunningAs manager_running_as_from_string(const char *s); | |
198 | ||
60918275 | 199 | #endif |