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         int argc;
  41 };
  42
  43 typedef enum instance_watchdog {
  44         INSTANCE_WATCHDOG_MODE_DISABLED,
  45         INSTANCE_WATCHDOG_MODE_PASSIVE,
  46         INSTANCE_WATCHDOG_MODE_ACTIVE,
  47         __INSTANCE_WATCHDOG_MODE_MAX,
  48 } instance_watchdog_mode_t;
  49
  50 struct watchdog {
  51         instance_watchdog_mode_t mode;
  52         uint32_t freq;
  53         struct uloop_timeout timeout;
  54 };
  55
  56 struct service_instance {
  57         struct vlist_node node;
  58         struct service *srv;
  59         const char *name;
  60
  61         int8_t nice;
  62         bool valid;
  63
  64         char *user;
  65         uid_t uid;
  66         gid_t pw_gid;
  67         char *group;
  68         gid_t gr_gid;
  69
  70         bool halt;
  71         bool restart;
  72         bool respawn;
  73         int respawn_count;
  74         int reload_signal;
  75         struct timespec start;
  76
  77         bool trace;
  78         bool has_jail;
  79         bool require_jail;
  80         bool immediately;
  81         bool no_new_privs;
  82         struct jail jail;
  83         char *seccomp;
  84         char *capabilities;
  85         char *pidfile;
  86         char *extroot;
  87         char *overlaydir;
  88         char *tmpoverlaysize;
  89         char *bundle;
  90         int syslog_facility;
  91         int exit_code;
  92
  93         uint32_t term_timeout;
  94         uint32_t respawn_timeout;
  95         uint32_t respawn_threshold;
  96         uint32_t respawn_retry;
  97
  98         struct blob_attr *config;
  99         struct uloop_process proc;
 100         struct uloop_timeout timeout;
 101         struct ustream_fd _stdout;
 102         struct ustream_fd _stderr;
 103         struct ustream_fd console;
 104         struct ustream_fd console_client;
 105
 106         struct blob_attr *command;
 107         struct blob_attr *trigger;
 108         struct blobmsg_list env;
 109         struct blobmsg_list data;
 110         struct blobmsg_list netdev;
 111         struct blobmsg_list file;
 112         struct blobmsg_list limits;
 113         struct blobmsg_list errors;
 114
 115         struct watchdog watchdog;
 116 };
 117
 118 void instance_start(struct service_instance *in);
 119 void instance_stop(struct service_instance *in, bool halt);
 120 void instance_update(struct service_instance *in, struct service_instance *in_new);
 121 void instance_init(struct service_instance *in, struct service *s, struct blob_attr *config);
 122 void instance_free(struct service_instance *in);
 123 void instance_dump(struct blob_buf *b, struct service_instance *in, int debug);
 124
 125 #endif