init.h revision 3899e9fc01cf608f19f716749c54cc5c4d17e766 
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
20void handle_control_message(const char *msg, const char *arg);
21
22void log_init(void);
23void log_set_level(int level);
24void log_close(void);
25void log_write(int level, const char *fmt, ...)
26    __attribute__ ((format(printf, 2, 3)));
27
28#define ERROR(x...)   log_write(3, "<3>init: " x)
29#define NOTICE(x...)  log_write(5, "<5>init: " x)
30#define INFO(x...)    log_write(6, "<6>init: " x)
31
32#define LOG_DEFAULT_LEVEL  3  /* messages <= this level are logged */
33#define LOG_UEVENTS        0  /* log uevent messages if 1. verbose */
34
35struct listnode
36{
37    struct listnode *next;
38    struct listnode *prev;
39};
40
41#define node_to_item(node, container, member) \
42    (container *) (((char*) (node)) - offsetof(container, member))
43
44#define list_declare(name) \
45    struct listnode name = { \
46        .next = &name, \
47        .prev = &name, \
48    }
49
50#define list_for_each(node, list) \
51    for (node = (list)->next; node != (list); node = node->next)
52
53void list_init(struct listnode *list);
54void list_add_tail(struct listnode *list, struct listnode *item);
55void list_remove(struct listnode *item);
56
57#define list_empty(list) ((list) == (list)->next)
58#define list_head(list) ((list)->next)
59#define list_tail(list) ((list)->prev)
60
61struct command
62{
63        /* list of commands in an action */
64    struct listnode clist;
65
66    int (*func)(int nargs, char **args);
67    int nargs;
68    char *args[1];
69};
70
71struct action {
72        /* node in list of all actions */
73    struct listnode alist;
74        /* node in the queue of pending actions */
75    struct listnode qlist;
76        /* node in list of actions for a trigger */
77    struct listnode tlist;
78
79    unsigned hash;
80    const char *name;
81
82    struct listnode commands;
83    struct command *current;
84};
85
86struct socketinfo {
87    struct socketinfo *next;
88    const char *name;
89    const char *type;
90    uid_t uid;
91    gid_t gid;
92    int perm;
93};
94
95struct svcenvinfo {
96    struct svcenvinfo *next;
97    const char *name;
98    const char *value;
99};
100
101#define SVC_DISABLED    0x01  /* do not autostart with class */
102#define SVC_ONESHOT     0x02  /* do not restart on exit */
103#define SVC_RUNNING     0x04  /* currently active */
104#define SVC_RESTARTING  0x08  /* waiting to restart */
105#define SVC_CONSOLE     0x10  /* requires console */
106#define SVC_CRITICAL    0x20  /* will reboot into recovery if keeps crashing */
107
108#define NR_SVC_SUPP_GIDS 12    /* twelve supplementary groups */
109
110#define SVC_MAXARGS 64
111
112struct service {
113        /* list of all services */
114    struct listnode slist;
115
116    const char *name;
117    const char *classname;
118
119    unsigned flags;
120    pid_t pid;
121    time_t time_started;    /* time of last start */
122    time_t time_crashed;    /* first crash within inspection window */
123    int nr_crashed;         /* number of times crashed within window */
124
125    uid_t uid;
126    gid_t gid;
127    gid_t supp_gids[NR_SVC_SUPP_GIDS];
128    size_t nr_supp_gids;
129
130    struct socketinfo *sockets;
131    struct svcenvinfo *envvars;
132
133    struct action onrestart;  /* Actions to execute on restart. */
134
135    /* keycodes for triggering this service via /dev/keychord */
136    int *keycodes;
137    int nkeycodes;
138    int keychord_id;
139
140    int ioprio_class;
141    int ioprio_pri;
142
143    int nargs;
144    /* "MUST BE AT THE END OF THE STRUCT" */
145    char *args[1];
146}; /*     ^-------'args' MUST be at the end of this struct! */
147
148int parse_config_file(const char *fn);
149
150void notify_service_state(const char *name, const char *state);
151
152struct service *service_find_by_name(const char *name);
153struct service *service_find_by_pid(pid_t pid);
154struct service *service_find_by_keychord(int keychord_id);
155void service_for_each(void (*func)(struct service *svc));
156void service_for_each_class(const char *classname,
157                            void (*func)(struct service *svc));
158void service_for_each_flags(unsigned matchflags,
159                            void (*func)(struct service *svc));
160void service_stop(struct service *svc);
161void service_start(struct service *svc, const char *dynamic_args);
162void property_changed(const char *name, const char *value);
163
164#define INIT_IMAGE_FILE	"/initlogo.rle"
165
166int load_565rle_image( char *file_name );
167
168#endif	/* _INIT_INIT_H */
169