service/instance.h

   1 /*
   2  * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
   3  * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU Lesser General Public License version 2.1
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #ifndef __PROCD_INSTANCE_H
  16 #define __PROCD_INSTANCE_H
  17
  18 #include <libubox/vlist.h>
  19 #include <libubox/uloop.h>
  20 #include <libubox/ustream.h>
  21 #include "../utils/utils.h"
  22
  23 #define RESPAWN_ERROR   (5 * 60)
  24 #define SIGNALLED_OFFSET 128
  25
  26 struct jail {
  27         bool procfs;
  28         bool sysfs;
  29         bool ubus;
  30         bool log;
  31         bool ronly;
  32         bool netns;
  33         bool userns;
  34         bool cgroupsns;
  35         bool console;
  36         char *name;
  37         char *hostname;
  38         char *pidfile;
  39         struct blobmsg_list mount;
  40         struct blobmsg_list setns;
  41         int argc;
  42 };
  43
  44 typedef enum instance_watchdog {
  45         INSTANCE_WATCHDOG_MODE_DISABLED,
  46         INSTANCE_WATCHDOG_MODE_PASSIVE,
  47         INSTANCE_WATCHDOG_MODE_ACTIVE,
  48         __INSTANCE_WATCHDOG_MODE_MAX,
  49 } instance_watchdog_mode_t;
  50
  51 struct watchdog {
  52         instance_watchdog_mode_t mode;
  53         uint32_t freq;
  54         struct uloop_timeout timeout;
  55 };
  56
  57 struct service_instance {
  58         struct vlist_node node;
  59         struct service *srv;
  60         const char *name;
  61
  62         int8_t nice;
  63         bool valid;
  64
  65         char *user;
  66         uid_t uid;
  67         gid_t pw_gid;
  68         char *group;
  69         gid_t gr_gid;
  70
  71         bool halt;
  72         bool restart;
  73         bool respawn;
  74         int respawn_count;
  75         int reload_signal;
  76         struct timespec start;
  77
  78         bool trace;
  79         bool has_jail;
  80         bool require_jail;
  81         bool immediately;
  82         bool no_new_privs;
  83         struct jail jail;
  84         char *seccomp;
  85         char *capabilities;
  86         char *pidfile;
  87         char *extroot;
  88         char *overlaydir;
  89         char *tmpoverlaysize;
  90         char *bundle;
  91         int syslog_facility;
  92         int exit_code;
  93
  94         uint32_t term_timeout;
  95         uint32_t respawn_timeout;
  96         uint32_t respawn_threshold;
  97         uint32_t respawn_retry;
  98
  99         struct blob_attr *config;
 100         struct uloop_process proc;
 101         struct uloop_timeout timeout;
 102         struct ustream_fd _stdout;
 103         struct ustream_fd _stderr;
 104         struct ustream_fd console;
 105         struct ustream_fd console_client;
 106
 107         struct blob_attr *command;
 108         struct blob_attr *trigger;
 109         struct blobmsg_list env;
 110         struct blobmsg_list data;
 111         struct blobmsg_list netdev;
 112         struct blobmsg_list file;
 113         struct blobmsg_list limits;
 114         struct blobmsg_list errors;
 115
 116         struct watchdog watchdog;
 117 };
 118
 119 void instance_start(struct service_instance *in);
 120 void instance_stop(struct service_instance *in, bool halt);
 121 void instance_update(struct service_instance *in, struct service_instance *in_new);
 122 void instance_init(struct service_instance *in, struct service *s, struct blob_attr *config);
 123 void instance_free(struct service_instance *in);
 124 void instance_dump(struct blob_buf *b, struct service_instance *in, int debug);
 125
 126 #endif