Home | History | Annotate | Download | only in init
      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 <cutils/list.h>
     21 
     22 #include <sys/stat.h>
     23 
     24 void handle_control_message(const char *msg, const char *arg);
     25 
     26 struct 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 
     36 struct 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 
     51 struct 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 
     60 struct 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_RESET       0x40  /* Use when stopping a process, but not disabling
     73                                  so it can be restarted with its class */
     74 #define SVC_RC_DISABLED 0x80  /* Remember if the disabled flag was set in the rc script */
     75 #define SVC_RESTART     0x100 /* Use to safely restart (stop, wait, start) a service */
     76 
     77 #define NR_SVC_SUPP_GIDS 12    /* twelve supplementary groups */
     78 
     79 #define COMMAND_RETRY_TIMEOUT 5
     80 
     81 struct service {
     82         /* list of all services */
     83     struct listnode slist;
     84 
     85     const char *name;
     86     const char *classname;
     87 
     88     unsigned flags;
     89     pid_t pid;
     90     time_t time_started;    /* time of last start */
     91     time_t time_crashed;    /* first crash within inspection window */
     92     int nr_crashed;         /* number of times crashed within window */
     93 
     94     uid_t uid;
     95     gid_t gid;
     96     gid_t supp_gids[NR_SVC_SUPP_GIDS];
     97     size_t nr_supp_gids;
     98 
     99     char *seclabel;
    100 
    101     struct socketinfo *sockets;
    102     struct svcenvinfo *envvars;
    103 
    104     struct action onrestart;  /* Actions to execute on restart. */
    105 
    106     /* keycodes for triggering this service via /dev/keychord */
    107     int *keycodes;
    108     int nkeycodes;
    109     int keychord_id;
    110 
    111     int ioprio_class;
    112     int ioprio_pri;
    113 
    114     int nargs;
    115     /* "MUST BE AT THE END OF THE STRUCT" */
    116     char *args[1];
    117 }; /*     ^-------'args' MUST be at the end of this struct! */
    118 
    119 void notify_service_state(const char *name, const char *state);
    120 
    121 struct service *service_find_by_name(const char *name);
    122 struct service *service_find_by_pid(pid_t pid);
    123 struct service *service_find_by_keychord(int keychord_id);
    124 void service_for_each(void (*func)(struct service *svc));
    125 void service_for_each_class(const char *classname,
    126                             void (*func)(struct service *svc));
    127 void service_for_each_flags(unsigned matchflags,
    128                             void (*func)(struct service *svc));
    129 void service_stop(struct service *svc);
    130 void service_reset(struct service *svc);
    131 void service_restart(struct service *svc);
    132 void service_start(struct service *svc, const char *dynamic_args);
    133 void property_changed(const char *name, const char *value);
    134 
    135 #define INIT_IMAGE_FILE	"/initlogo.rle"
    136 
    137 int load_565rle_image( char *file_name );
    138 
    139 extern struct selabel_handle *sehandle;
    140 extern struct selabel_handle *sehandle_prop;
    141 extern int selinux_reload_policy(void);
    142 
    143 #endif	/* _INIT_INIT_H */
    144