init.h revision c83cd879d45e667fbb4763f18c908928ee9d67d8
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 20int mtd_name_to_number(const char *name); 21 22void handle_control_message(const char *msg, const char *arg); 23 24int create_socket(const char *name, int type, mode_t perm, 25 uid_t uid, gid_t gid); 26 27void *read_file(const char *fn, unsigned *_sz); 28 29void log_init(void); 30void log_set_level(int level); 31void log_close(void); 32void log_write(int level, const char *fmt, ...) 33 __attribute__ ((format(printf, 2, 3))); 34 35#define ERROR(x...) log_write(3, "<3>init: " x) 36#define NOTICE(x...) log_write(5, "<5>init: " x) 37#define INFO(x...) log_write(6, "<6>init: " x) 38 39#define LOG_DEFAULT_LEVEL 3 /* messages <= this level are logged */ 40#define LOG_UEVENTS 0 /* log uevent messages if 1. verbose */ 41 42unsigned int decode_uid(const char *s); 43 44struct listnode 45{ 46 struct listnode *next; 47 struct listnode *prev; 48}; 49 50#define node_to_item(node, container, member) \ 51 (container *) (((char*) (node)) - offsetof(container, member)) 52 53#define list_declare(name) \ 54 struct listnode name = { \ 55 .next = &name, \ 56 .prev = &name, \ 57 } 58 59#define list_for_each(node, list) \ 60 for (node = (list)->next; node != (list); node = node->next) 61 62void list_init(struct listnode *list); 63void list_add_tail(struct listnode *list, struct listnode *item); 64void list_remove(struct listnode *item); 65 66#define list_empty(list) ((list) == (list)->next) 67#define list_head(list) ((list)->next) 68#define list_tail(list) ((list)->prev) 69 70struct command 71{ 72 /* list of commands in an action */ 73 struct listnode clist; 74 75 int (*func)(int nargs, char **args); 76 int nargs; 77 char *args[1]; 78}; 79 80struct action { 81 /* node in list of all actions */ 82 struct listnode alist; 83 /* node in the queue of pending actions */ 84 struct listnode qlist; 85 /* node in list of actions for a trigger */ 86 struct listnode tlist; 87 88 unsigned hash; 89 const char *name; 90 91 struct listnode commands; 92 struct command *current; 93}; 94 95struct socketinfo { 96 struct socketinfo *next; 97 const char *name; 98 const char *type; 99 uid_t uid; 100 gid_t gid; 101 int perm; 102}; 103 104struct svcenvinfo { 105 struct svcenvinfo *next; 106 const char *name; 107 const char *value; 108}; 109 110#define SVC_DISABLED 0x01 /* do not autostart with class */ 111#define SVC_ONESHOT 0x02 /* do not restart on exit */ 112#define SVC_RUNNING 0x04 /* currently active */ 113#define SVC_RESTARTING 0x08 /* waiting to restart */ 114#define SVC_CONSOLE 0x10 /* requires console */ 115#define SVC_CRITICAL 0x20 /* will reboot into recovery if keeps crashing */ 116 117#define NR_SVC_SUPP_GIDS 6 /* six supplementary groups */ 118 119struct service { 120 /* list of all services */ 121 struct listnode slist; 122 123 const char *name; 124 const char *classname; 125 126 unsigned flags; 127 pid_t pid; 128 time_t time_started; /* time of last start */ 129 time_t time_crashed; /* first crash within inspection window */ 130 int nr_crashed; /* number of times crashed within window */ 131 132 uid_t uid; 133 gid_t gid; 134 gid_t supp_gids[NR_SVC_SUPP_GIDS]; 135 size_t nr_supp_gids; 136 137 struct socketinfo *sockets; 138 struct svcenvinfo *envvars; 139 140 struct action onrestart; /* Actions to execute on restart. */ 141 142 /* keycodes for triggering this service via /dev/keychord */ 143 int *keycodes; 144 int nkeycodes; 145 int keychord_id; 146 147 int nargs; 148 /* "MUST BE AT THE END OF THE STRUCT" */ 149 char *args[1]; 150}; /* ^-------'args' MUST be at the end of this struct! */ 151 152int parse_config_file(const char *fn); 153 154struct service *service_find_by_name(const char *name); 155struct service *service_find_by_pid(pid_t pid); 156struct service *service_find_by_keychord(int keychord_id); 157void service_for_each(void (*func)(struct service *svc)); 158void service_for_each_class(const char *classname, 159 void (*func)(struct service *svc)); 160void service_for_each_flags(unsigned matchflags, 161 void (*func)(struct service *svc)); 162void service_stop(struct service *svc); 163void service_start(struct service *svc); 164void property_changed(const char *name, const char *value); 165 166struct action *action_remove_queue_head(void); 167void action_add_queue_tail(struct action *act); 168void action_for_each_trigger(const char *trigger, 169 void (*func)(struct action *act)); 170void queue_property_triggers(const char *name, const char *value); 171void queue_all_property_triggers(); 172 173#define INIT_IMAGE_FILE "/initlogo.rle" 174 175int load_565rle_image( char *file_name ); 176 177#endif /* _INIT_INIT_H */ 178