1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _INIT_INIT_H
18#define _INIT_INIT_H
19
20#include <sys/types.h>
21
22#include <string>
23#include <vector>
24
25#include <cutils/list.h>
26#include <cutils/iosched_policy.h>
27
28struct command
29{
30        /* list of commands in an action */
31    struct listnode clist;
32
33    int (*func)(int nargs, char **args);
34
35    int line;
36    const char *filename;
37
38    int nargs;
39    char *args[1];
40};
41
42struct trigger {
43    struct listnode nlist;
44    const char *name;
45};
46
47struct action {
48        /* node in list of all actions */
49    struct listnode alist;
50        /* node in the queue of pending actions */
51    struct listnode qlist;
52        /* node in list of actions for a trigger */
53    struct listnode tlist;
54
55    unsigned hash;
56
57        /* list of actions which triggers the commands*/
58    struct listnode triggers;
59    struct listnode commands;
60    struct command *current;
61};
62
63struct socketinfo {
64    struct socketinfo *next;
65    const char *name;
66    const char *type;
67    uid_t uid;
68    gid_t gid;
69    int perm;
70    const char *socketcon;
71};
72
73struct svcenvinfo {
74    struct svcenvinfo *next;
75    const char *name;
76    const char *value;
77};
78
79#define SVC_DISABLED       0x001  // do not autostart with class
80#define SVC_ONESHOT        0x002  // do not restart on exit
81#define SVC_RUNNING        0x004  // currently active
82#define SVC_RESTARTING     0x008  // waiting to restart
83#define SVC_CONSOLE        0x010  // requires console
84#define SVC_CRITICAL       0x020  // will reboot into recovery if keeps crashing
85#define SVC_RESET          0x040  // Use when stopping a process, but not disabling so it can be restarted with its class.
86#define SVC_RC_DISABLED    0x080  // Remember if the disabled flag was set in the rc script.
87#define SVC_RESTART        0x100  // Use to safely restart (stop, wait, start) a service.
88#define SVC_DISABLED_START 0x200  // A start was requested but it was disabled at the time.
89#define SVC_EXEC           0x400  // This synthetic service corresponds to an 'exec'.
90
91#define NR_SVC_SUPP_GIDS 12    /* twelve supplementary groups */
92
93#define COMMAND_RETRY_TIMEOUT 5
94
95struct service {
96    void NotifyStateChange(const char* new_state);
97
98        /* list of all services */
99    struct listnode slist;
100
101    char *name;
102    const char *classname;
103
104    unsigned flags;
105    pid_t pid;
106    time_t time_started;    /* time of last start */
107    time_t time_crashed;    /* first crash within inspection window */
108    int nr_crashed;         /* number of times crashed within window */
109
110    uid_t uid;
111    gid_t gid;
112    gid_t supp_gids[NR_SVC_SUPP_GIDS];
113    size_t nr_supp_gids;
114
115    const char* seclabel;
116
117    struct socketinfo *sockets;
118    struct svcenvinfo *envvars;
119
120    struct action onrestart;  /* Actions to execute on restart. */
121
122    std::vector<std::string>* writepid_files_;
123
124    /* keycodes for triggering this service via /dev/keychord */
125    int *keycodes;
126    int nkeycodes;
127    int keychord_id;
128
129    IoSchedClass ioprio_class;
130    int ioprio_pri;
131
132    int nargs;
133    /* "MUST BE AT THE END OF THE STRUCT" */
134    char *args[1];
135}; /*     ^-------'args' MUST be at the end of this struct! */
136
137extern bool waiting_for_exec;
138extern struct selabel_handle *sehandle;
139extern struct selabel_handle *sehandle_prop;
140
141void build_triggers_string(char *name_str, int length, struct action *cur_action);
142
143void handle_control_message(const char *msg, const char *arg);
144
145struct service *service_find_by_name(const char *name);
146struct service *service_find_by_pid(pid_t pid);
147struct service *service_find_by_keychord(int keychord_id);
148void service_for_each(void (*func)(struct service *svc));
149void service_for_each_class(const char *classname,
150                            void (*func)(struct service *svc));
151void service_for_each_flags(unsigned matchflags,
152                            void (*func)(struct service *svc));
153void service_stop(struct service *svc);
154void service_reset(struct service *svc);
155void service_restart(struct service *svc);
156void service_start(struct service *svc, const char *dynamic_args);
157void property_changed(const char *name, const char *value);
158
159int selinux_reload_policy(void);
160
161void zap_stdio(void);
162
163void register_epoll_handler(int fd, void (*fn)());
164
165#endif	/* _INIT_INIT_H */
166