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Sources/procd/ubus.c

  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 #include <sys/resource.h>
 16 #include <stdlib.h>
 17 #include <unistd.h>
 18 #include <signal.h>
 19 
 20 #include "procd.h"
 21 
 22 char *ubus_socket = NULL;
 23 static struct ubus_context *ctx;
 24 static struct uloop_timeout ubus_timer;
 25 static int timeout;
 26 static struct udebug_ubus udebug;
 27 
 28 static void
 29 procd_udebug_cb(struct udebug_ubus *ctx, struct blob_attr *data, bool enabled)
 30 {
 31         procd_udebug_set_enabled(enabled);
 32 }
 33 
 34 static void reset_timeout(void)
 35 {
 36         timeout = 50;
 37 }
 38 
 39 static void timeout_retry(void)
 40 {
 41         uloop_timeout_set(&ubus_timer, timeout);
 42         timeout *= 2;
 43         if (timeout > 1000)
 44                 timeout = 1000;
 45 }
 46 
 47 static void
 48 ubus_reconnect_cb(struct uloop_timeout *timeout)
 49 {
 50         if (!ubus_reconnect(ctx, ubus_socket)) {
 51                 ubus_add_uloop(ctx);
 52                 return;
 53         }
 54 
 55         timeout_retry();
 56 }
 57 
 58 static void
 59 ubus_disconnect_cb(struct ubus_context *ctx)
 60 {
 61         ubus_timer.cb = ubus_reconnect_cb;
 62         reset_timeout();
 63         timeout_retry();
 64 }
 65 
 66 static void
 67 ubus_connect_cb(struct uloop_timeout *timeout)
 68 {
 69         ctx = ubus_connect(ubus_socket);
 70 
 71         if (!ctx) {
 72                 DEBUG(4, "Connection to ubus failed\n");
 73                 timeout_retry();
 74                 return;
 75         }
 76 
 77         udebug_ubus_init(&udebug, ctx, "procd", procd_udebug_cb);
 78         ctx->connection_lost = ubus_disconnect_cb;
 79         ubus_init_hotplug(ctx);
 80         ubus_init_service(ctx);
 81         ubus_init_system(ctx);
 82         watch_ubus(ctx);
 83 
 84         DEBUG(2, "Connected to ubus, id=%08x\n", ctx->local_id);
 85         reset_timeout();
 86         ubus_add_uloop(ctx);
 87         procd_state_ubus_connect();
 88 }
 89 
 90 void
 91 procd_connect_ubus(void)
 92 {
 93         ubus_timer.cb = ubus_connect_cb;
 94         reset_timeout();
 95         timeout_retry();
 96 }
 97 

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