init.h revision 50b3afd9f39619f69dc6f4efc29be88933eb3614 
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 "list.h"
21
22#include <sys/stat.h>
23
24void handle_control_message(const char *msg, const char *arg);
25
26struct command
27{
28        /* list of commands in an action */
29    struct listnode clist;
30
31    int (*func)(int nargs, char **args);
32    int nargs;
33    char *args[1];
34};
35
36struct action {
37        /* node in list of all actions */
38    struct listnode alist;
39        /* node in the queue of pending actions */
40    struct listnode qlist;
41        /* node in list of actions for a trigger */
42    struct listnode tlist;
43
44    unsigned hash;
45    const char *name;
46
47    struct listnode commands;
48    struct command *current;
49};
50
51struct socketinfo {
52    struct socketinfo *next;
53    const char *name;
54    const char *type;
55    uid_t uid;
56    gid_t gid;
57    int perm;
58};
59
60struct svcenvinfo {
61    struct svcenvinfo *next;
62    const char *name;
63    const char *value;
64};
65
66#define SVC_DISABLED    0x01  /* do not autostart with class */
67#define SVC_ONESHOT     0x02  /* do not restart on exit */
68#define SVC_RUNNING     0x04  /* currently active */
69#define SVC_RESTARTING  0x08  /* waiting to restart */
70#define SVC_CONSOLE     0x10  /* requires console */
71#define SVC_CRITICAL    0x20  /* will reboot into recovery if keeps crashing */
72#define SVC_SLOW_START  0x40  /* wait a few seconds before starting */
73
74#define NR_SVC_SUPP_GIDS 12    /* twelve supplementary groups */
75
76#define COMMAND_RETRY_TIMEOUT 5
77
78struct service {
79        /* list of all services */
80    struct listnode slist;
81
82    const char *name;
83    const char *classname;
84
85    unsigned flags;
86    pid_t pid;
87    time_t time_started;    /* time of last start */
88    time_t time_crashed;    /* first crash within inspection window */
89    int nr_crashed;         /* number of times crashed within window */
90
91    uid_t uid;
92    gid_t gid;
93    gid_t supp_gids[NR_SVC_SUPP_GIDS];
94    size_t nr_supp_gids;
95
96    struct socketinfo *sockets;
97    struct svcenvinfo *envvars;
98
99    struct action onrestart;  /* Actions to execute on restart. */
100
101    /* keycodes for triggering this service via /dev/keychord */
102    int *keycodes;
103    int nkeycodes;
104    int keychord_id;
105
106    int ioprio_class;
107    int ioprio_pri;
108
109    int nargs;
110    /* "MUST BE AT THE END OF THE STRUCT" */
111    char *args[1];
112}; /*     ^-------'args' MUST be at the end of this struct! */
113
114void notify_service_state(const char *name, const char *state);
115
116struct service *service_find_by_name(const char *name);
117struct service *service_find_by_pid(pid_t pid);
118struct service *service_find_by_keychord(int keychord_id);
119void service_for_each(void (*func)(struct service *svc));
120void service_for_each_class(const char *classname,
121                            void (*func)(struct service *svc));
122void service_for_each_flags(unsigned matchflags,
123                            void (*func)(struct service *svc));
124void service_stop(struct service *svc);
125void service_start(struct service *svc, const char *dynamic_args);
126void property_changed(const char *name, const char *value);
127
128#define INIT_IMAGE_FILE	"/initlogo.rle"
129
130int load_565rle_image( char *file_name );
131
132#endif	/* _INIT_INIT_H */
133