system.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/utsname.h>
  16 #ifdef linux
  17 #include <sys/sysinfo.h>
  18 #endif
  19 #include <sys/ioctl.h>
  20 #include <sys/types.h>
  21 #include <sys/reboot.h>
  22 #include <sys/stat.h>
  23 #include <fcntl.h>
  24 #include <signal.h>
  25 #include <unistd.h>
  26 #include <stdlib.h>
  27
  28 #include <json-c/json_tokener.h>
  29 #include <libubox/blobmsg_json.h>
  30 #include <libubox/uloop.h>
  31
  32 #include "procd.h"
  33 #include "sysupgrade.h"
  34 #include "watchdog.h"
  35
  36 static struct blob_buf b;
  37 static int notify;
  38 static struct ubus_context *_ctx;
  39
  40 static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
  41                  struct ubus_request_data *req, const char *method,
  42                  struct blob_attr *msg)
  43 {
  44         void *c;
  45         char line[256];
  46         char *key, *val, *next;
  47         struct utsname utsname;
  48         FILE *f;
  49
  50         blob_buf_init(&b, 0);
  51
  52         if (uname(&utsname) >= 0)
  53         {
  54                 blobmsg_add_string(&b, "kernel", utsname.release);
  55                 blobmsg_add_string(&b, "hostname", utsname.nodename);
  56         }
  57
  58         if ((f = fopen("/proc/cpuinfo", "r")) != NULL)
  59         {
  60                 while(fgets(line, sizeof(line), f))
  61                 {
  62                         key = strtok(line, "\t:");
  63                         val = strtok(NULL, "\t\n");
  64
  65                         if (!key || !val)
  66                                 continue;
  67
  68                         if (!strcasecmp(key, "system type") ||
  69                             !strcasecmp(key, "processor") ||
  70                             !strcasecmp(key, "cpu") ||
  71                             !strcasecmp(key, "model name"))
  72                         {
  73                                 strtoul(val + 2, &key, 0);
  74
  75                                 if (key == (val + 2) || *key != 0)
  76                                 {
  77                                         blobmsg_add_string(&b, "system", val + 2);
  78                                         break;
  79                                 }
  80                         }
  81                 }
  82
  83                 fclose(f);
  84         }
  85
  86         if ((f = fopen("/tmp/sysinfo/model", "r")) != NULL ||
  87             (f = fopen("/proc/device-tree/model", "r")) != NULL)
  88         {
  89                 if (fgets(line, sizeof(line), f))
  90                 {
  91                         val = strtok(line, "\t\n");
  92
  93                         if (val)
  94                                 blobmsg_add_string(&b, "model", val);
  95                 }
  96
  97                 fclose(f);
  98         }
  99         else if ((f = fopen("/proc/cpuinfo", "r")) != NULL)
 100         {
 101                 while(fgets(line, sizeof(line), f))
 102                 {
 103                         key = strtok(line, "\t:");
 104                         val = strtok(NULL, "\t\n");
 105
 106                         if (!key || !val)
 107                                 continue;
 108
 109                         if (!strcasecmp(key, "machine") ||
 110                             !strcasecmp(key, "hardware"))
 111                         {
 112                                 blobmsg_add_string(&b, "model", val + 2);
 113                                 break;
 114                         }
 115                 }
 116
 117                 fclose(f);
 118         }
 119
 120         if ((f = fopen("/tmp/sysinfo/board_name", "r")) != NULL)
 121         {
 122                 if (fgets(line, sizeof(line), f))
 123                 {
 124                         val = strtok(line, "\t\n");
 125
 126                         if (val)
 127                                 blobmsg_add_string(&b, "board_name", val);
 128                 }
 129
 130                 fclose(f);
 131         }
 132         else if ((f = fopen("/proc/device-tree/compatible", "r")) != NULL)
 133         {
 134                 if (fgets(line, sizeof(line), f))
 135                 {
 136                         val = strtok(line, "\t\n");
 137
 138                         if (val)
 139                         {
 140                                 next = val;
 141                                 while ((next = strchr(next, ',')) != NULL)
 142                                 {
 143                                         *next = '-';
 144                                         next++;
 145                                 }
 146
 147                                 blobmsg_add_string(&b, "board_name", val);
 148                         }
 149                 }
 150
 151                 fclose(f);
 152         }
 153
 154         if ((f = fopen("/etc/openwrt_release", "r")) != NULL)
 155         {
 156                 c = blobmsg_open_table(&b, "release");
 157
 158                 while (fgets(line, sizeof(line), f))
 159                 {
 160                         char *dest;
 161                         char ch;
 162
 163                         key = line;
 164                         val = strchr(line, '=');
 165                         if (!val)
 166                                 continue;
 167
 168                         *(val++) = 0;
 169
 170                         if (!strcasecmp(key, "DISTRIB_ID"))
 171                                 key = "distribution";
 172                         else if (!strcasecmp(key, "DISTRIB_RELEASE"))
 173                                 key = "version";
 174                         else if (!strcasecmp(key, "DISTRIB_REVISION"))
 175                                 key = "revision";
 176                         else if (!strcasecmp(key, "DISTRIB_CODENAME"))
 177                                 key = "codename";
 178                         else if (!strcasecmp(key, "DISTRIB_TARGET"))
 179                                 key = "target";
 180                         else if (!strcasecmp(key, "DISTRIB_DESCRIPTION"))
 181                                 key = "description";
 182                         else
 183                                 continue;
 184
 185                         dest = blobmsg_alloc_string_buffer(&b, key, strlen(val));
 186                         if (!dest) {
 187                                 ERROR("Failed to allocate blob.\n");
 188                                 continue;
 189                         }
 190
 191                         while (val && (ch = *(val++)) != 0) {
 192                                 switch (ch) {
 193                                 case '\'':
 194                                 case '"':
 195                                         next = strchr(val, ch);
 196                                         if (next)
 197                                                 *next = 0;
 198
 199                                         strcpy(dest, val);
 200
 201                                         if (next)
 202                                                 val = next + 1;
 203
 204                                         dest += strlen(dest);
 205                                         break;
 206                                 case '\\':
 207                                         *(dest++) = *(val++);
 208                                         break;
 209                                 }
 210                         }
 211                         blobmsg_add_string_buffer(&b);
 212                 }
 213
 214                 blobmsg_close_array(&b, c);
 215
 216                 fclose(f);
 217         }
 218
 219         ubus_send_reply(ctx, req, b.head);
 220
 221         return UBUS_STATUS_OK;
 222 }
 223
 224 static int system_info(struct ubus_context *ctx, struct ubus_object *obj,
 225                 struct ubus_request_data *req, const char *method,
 226                 struct blob_attr *msg)
 227 {
 228         time_t now;
 229         struct tm *tm;
 230 #ifdef linux
 231         struct sysinfo info;
 232         void *c;
 233         char line[256];
 234         char *key, *val;
 235         unsigned long long available, cached;
 236         FILE *f;
 237
 238         if (sysinfo(&info))
 239                 return UBUS_STATUS_UNKNOWN_ERROR;
 240
 241         if ((f = fopen("/proc/meminfo", "r")) == NULL)
 242                 return UBUS_STATUS_UNKNOWN_ERROR;
 243
 244         /* if linux < 3.14 MemAvailable is not in meminfo */
 245         available = 0;
 246         cached = 0;
 247
 248         while (fgets(line, sizeof(line), f))
 249         {
 250                 key = strtok(line, " :");
 251                 val = strtok(NULL, " ");
 252
 253                 if (!key || !val)
 254                         continue;
 255
 256                 if (!strcasecmp(key, "MemAvailable"))
 257                         available = 1024 * atoll(val);
 258                 else if (!strcasecmp(key, "Cached"))
 259                         cached = 1024 * atoll(val);
 260         }
 261
 262         fclose(f);
 263 #endif
 264
 265         now = time(NULL);
 266
 267         if (!(tm = localtime(&now)))
 268                 return UBUS_STATUS_UNKNOWN_ERROR;
 269
 270         blob_buf_init(&b, 0);
 271
 272         blobmsg_add_u32(&b, "localtime", now + tm->tm_gmtoff);
 273
 274 #ifdef linux
 275         blobmsg_add_u32(&b, "uptime",    info.uptime);
 276
 277         c = blobmsg_open_array(&b, "load");
 278         blobmsg_add_u32(&b, NULL, info.loads[0]);
 279         blobmsg_add_u32(&b, NULL, info.loads[1]);
 280         blobmsg_add_u32(&b, NULL, info.loads[2]);
 281         blobmsg_close_array(&b, c);
 282
 283         c = blobmsg_open_table(&b, "memory");
 284         blobmsg_add_u64(&b, "total",
 285                         (uint64_t)info.mem_unit * (uint64_t)info.totalram);
 286         blobmsg_add_u64(&b, "free",
 287                         (uint64_t)info.mem_unit * (uint64_t)info.freeram);
 288         blobmsg_add_u64(&b, "shared",
 289                         (uint64_t)info.mem_unit * (uint64_t)info.sharedram);
 290         blobmsg_add_u64(&b, "buffered",
 291                         (uint64_t)info.mem_unit * (uint64_t)info.bufferram);
 292         blobmsg_add_u64(&b, "available", available);
 293         blobmsg_add_u64(&b, "cached", cached);
 294         blobmsg_close_table(&b, c);
 295
 296         c = blobmsg_open_table(&b, "swap");
 297         blobmsg_add_u64(&b, "total",
 298                         (uint64_t)info.mem_unit * (uint64_t)info.totalswap);
 299         blobmsg_add_u64(&b, "free",
 300                         (uint64_t)info.mem_unit * (uint64_t)info.freeswap);
 301         blobmsg_close_table(&b, c);
 302 #endif
 303
 304         ubus_send_reply(ctx, req, b.head);
 305
 306         return UBUS_STATUS_OK;
 307 }
 308
 309 static int system_reboot(struct ubus_context *ctx, struct ubus_object *obj,
 310                          struct ubus_request_data *req, const char *method,
 311                          struct blob_attr *msg)
 312 {
 313         procd_shutdown(RB_AUTOBOOT);
 314         return 0;
 315 }
 316
 317 enum {
 318         WDT_FREQUENCY,
 319         WDT_TIMEOUT,
 320         WDT_MAGICCLOSE,
 321         WDT_STOP,
 322         __WDT_MAX
 323 };
 324
 325 static const struct blobmsg_policy watchdog_policy[__WDT_MAX] = {
 326         [WDT_FREQUENCY] = { .name = "frequency", .type = BLOBMSG_TYPE_INT32 },
 327         [WDT_TIMEOUT] = { .name = "timeout", .type = BLOBMSG_TYPE_INT32 },
 328         [WDT_MAGICCLOSE] = { .name = "magicclose", .type = BLOBMSG_TYPE_BOOL },
 329         [WDT_STOP] = { .name = "stop", .type = BLOBMSG_TYPE_BOOL },
 330 };
 331
 332 static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj,
 333                         struct ubus_request_data *req, const char *method,
 334                         struct blob_attr *msg)
 335 {
 336         struct blob_attr *tb[__WDT_MAX];
 337         const char *status;
 338
 339         if (!msg)
 340                 return UBUS_STATUS_INVALID_ARGUMENT;
 341
 342         blobmsg_parse(watchdog_policy, __WDT_MAX, tb, blob_data(msg), blob_len(msg));
 343         if (tb[WDT_FREQUENCY]) {
 344                 unsigned int timeout = tb[WDT_TIMEOUT] ? blobmsg_get_u32(tb[WDT_TIMEOUT]) :
 345                                                 watchdog_timeout(0);
 346                 unsigned int freq = blobmsg_get_u32(tb[WDT_FREQUENCY]);
 347
 348                 if (freq) {
 349                         if (freq > timeout / 2)
 350                                 freq = timeout / 2;
 351                         watchdog_frequency(freq);
 352                 }
 353         }
 354
 355         if (tb[WDT_TIMEOUT]) {
 356                 unsigned int timeout = blobmsg_get_u32(tb[WDT_TIMEOUT]);
 357                 unsigned int frequency = watchdog_frequency(0);
 358
 359                 if (timeout <= frequency)
 360                         timeout = frequency * 2;
 361                  watchdog_timeout(timeout);
 362         }
 363
 364         if (tb[WDT_MAGICCLOSE])
 365                 watchdog_set_magicclose(blobmsg_get_bool(tb[WDT_MAGICCLOSE]));
 366
 367         if (tb[WDT_STOP])
 368                 watchdog_set_stopped(blobmsg_get_bool(tb[WDT_STOP]));
 369
 370         if (watchdog_fd() == NULL)
 371                 status = "offline";
 372         else if (watchdog_get_stopped())
 373                 status = "stopped";
 374         else
 375                 status = "running";
 376
 377         blob_buf_init(&b, 0);
 378         blobmsg_add_string(&b, "status", status);
 379         blobmsg_add_u32(&b, "timeout", watchdog_timeout(0));
 380         blobmsg_add_u32(&b, "frequency", watchdog_frequency(0));
 381         blobmsg_add_u8(&b, "magicclose", watchdog_get_magicclose());
 382         ubus_send_reply(ctx, req, b.head);
 383
 384         return 0;
 385 }
 386
 387 enum {
 388         SIGNAL_PID,
 389         SIGNAL_NUM,
 390         __SIGNAL_MAX
 391 };
 392
 393 static const struct blobmsg_policy signal_policy[__SIGNAL_MAX] = {
 394         [SIGNAL_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
 395         [SIGNAL_NUM] = { .name = "signum", .type = BLOBMSG_TYPE_INT32 },
 396 };
 397
 398 static int proc_signal(struct ubus_context *ctx, struct ubus_object *obj,
 399                         struct ubus_request_data *req, const char *method,
 400                         struct blob_attr *msg)
 401 {
 402         struct blob_attr *tb[__SIGNAL_MAX];
 403
 404         if (!msg)
 405                 return UBUS_STATUS_INVALID_ARGUMENT;
 406
 407         blobmsg_parse(signal_policy, __SIGNAL_MAX, tb, blob_data(msg), blob_len(msg));
 408         if (!tb[SIGNAL_PID || !tb[SIGNAL_NUM]])
 409                 return UBUS_STATUS_INVALID_ARGUMENT;
 410
 411         kill(blobmsg_get_u32(tb[SIGNAL_PID]), blobmsg_get_u32(tb[SIGNAL_NUM]));
 412
 413         return 0;
 414 }
 415
 416 /**
 417  * validate_firmware_image_call - perform validation & store result in global b
 418  *
 419  * @file: firmware image path
 420  */
 421 static int validate_firmware_image_call(const char *file)
 422 {
 423         const char *path = "/usr/libexec/validate_firmware_image";
 424         json_object *jsobj = NULL;
 425         json_tokener *tok;
 426         char buf[64];
 427         ssize_t len;
 428         int fds[2];
 429         int err;
 430         int fd;
 431
 432         if (pipe(fds))
 433                 return -errno;
 434
 435         switch (fork()) {
 436         case -1:
 437                 return -errno;
 438         case 0:
 439                 /* Set stdin & stderr to /dev/null */
 440                 fd = open("/dev/null", O_RDWR);
 441                 if (fd >= 0) {
 442                         dup2(fd, 0);
 443                         dup2(fd, 2);
 444                         close(fd);
 445                 }
 446
 447                 /* Set stdout to the shared pipe */
 448                 dup2(fds[1], 1);
 449                 close(fds[0]);
 450                 close(fds[1]);
 451
 452                 execl(path, path, file, NULL);
 453                 exit(errno);
 454         }
 455
 456         /* Parent process */
 457
 458         tok = json_tokener_new();
 459         if (!tok) {
 460                 close(fds[0]);
 461                 close(fds[1]);
 462                 return -ENOMEM;
 463         }
 464
 465         blob_buf_init(&b, 0);
 466         while ((len = read(fds[0], buf, sizeof(buf)))) {
 467                 jsobj = json_tokener_parse_ex(tok, buf, len);
 468
 469                 if (json_tokener_get_error(tok) == json_tokener_success)
 470                         break;
 471                 else if (json_tokener_get_error(tok) == json_tokener_continue)
 472                         continue;
 473                 else
 474                         fprintf(stderr, "Failed to parse JSON: %d\n",
 475                                 json_tokener_get_error(tok));
 476         }
 477
 478         close(fds[0]);
 479         close(fds[1]);
 480
 481         err = -ENOENT;
 482         if (jsobj) {
 483                 if (json_object_get_type(jsobj) == json_type_object) {
 484                         blobmsg_add_object(&b, jsobj);
 485                         err = 0;
 486                 }
 487
 488                 json_object_put(jsobj);
 489         }
 490
 491         json_tokener_free(tok);
 492
 493         return err;
 494 }
 495
 496 enum {
 497         VALIDATE_FIRMWARE_IMAGE_PATH,
 498         __VALIDATE_FIRMWARE_IMAGE_MAX,
 499 };
 500
 501 static const struct blobmsg_policy validate_firmware_image_policy[__VALIDATE_FIRMWARE_IMAGE_MAX] = {
 502         [VALIDATE_FIRMWARE_IMAGE_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
 503 };
 504
 505 static int validate_firmware_image(struct ubus_context *ctx,
 506                                    struct ubus_object *obj,
 507                                    struct ubus_request_data *req,
 508                                    const char *method, struct blob_attr *msg)
 509 {
 510         struct blob_attr *tb[__VALIDATE_FIRMWARE_IMAGE_MAX];
 511
 512         if (!msg)
 513                 return UBUS_STATUS_INVALID_ARGUMENT;
 514
 515         blobmsg_parse(validate_firmware_image_policy, __VALIDATE_FIRMWARE_IMAGE_MAX, tb, blob_data(msg), blob_len(msg));
 516         if (!tb[VALIDATE_FIRMWARE_IMAGE_PATH])
 517                 return UBUS_STATUS_INVALID_ARGUMENT;
 518
 519         if (validate_firmware_image_call(blobmsg_get_string(tb[VALIDATE_FIRMWARE_IMAGE_PATH])))
 520                 return UBUS_STATUS_UNKNOWN_ERROR;
 521
 522         ubus_send_reply(ctx, req, b.head);
 523
 524         return UBUS_STATUS_OK;
 525 }
 526
 527 enum {
 528         SYSUPGRADE_PATH,
 529         SYSUPGRADE_FORCE,
 530         SYSUPGRADE_BACKUP,
 531         SYSUPGRADE_PREFIX,
 532         SYSUPGRADE_COMMAND,
 533         SYSUPGRADE_OPTIONS,
 534         __SYSUPGRADE_MAX
 535 };
 536
 537 static const struct blobmsg_policy sysupgrade_policy[__SYSUPGRADE_MAX] = {
 538         [SYSUPGRADE_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
 539         [SYSUPGRADE_FORCE] = { .name = "force", .type = BLOBMSG_TYPE_BOOL },
 540         [SYSUPGRADE_BACKUP] = { .name = "backup", .type = BLOBMSG_TYPE_STRING },
 541         [SYSUPGRADE_PREFIX] = { .name = "prefix", .type = BLOBMSG_TYPE_STRING },
 542         [SYSUPGRADE_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_STRING },
 543         [SYSUPGRADE_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_TABLE },
 544 };
 545
 546 static void sysupgrade_error(struct ubus_context *ctx,
 547                              struct ubus_request_data *req,
 548                              const char *message)
 549 {
 550         void *c;
 551
 552         blob_buf_init(&b, 0);
 553
 554         c = blobmsg_open_table(&b, "error");
 555         blobmsg_add_string(&b, "message", message);
 556         blobmsg_close_table(&b, c);
 557
 558         ubus_send_reply(ctx, req, b.head);
 559 }
 560
 561 static int sysupgrade(struct ubus_context *ctx, struct ubus_object *obj,
 562                       struct ubus_request_data *req, const char *method,
 563                       struct blob_attr *msg)
 564 {
 565         enum {
 566                 VALIDATION_VALID,
 567                 VALIDATION_FORCEABLE,
 568                 VALIDATION_ALLOW_BACKUP,
 569                 __VALIDATION_MAX
 570         };
 571         static const struct blobmsg_policy validation_policy[__VALIDATION_MAX] = {
 572                 [VALIDATION_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_BOOL },
 573                 [VALIDATION_FORCEABLE] = { .name = "forceable", .type = BLOBMSG_TYPE_BOOL },
 574                 [VALIDATION_ALLOW_BACKUP] = { .name = "allow_backup", .type = BLOBMSG_TYPE_BOOL },
 575         };
 576         struct blob_attr *validation[__VALIDATION_MAX];
 577         struct blob_attr *tb[__SYSUPGRADE_MAX];
 578         bool valid, forceable, allow_backup;
 579
 580         if (!msg)
 581                 return UBUS_STATUS_INVALID_ARGUMENT;
 582
 583         blobmsg_parse(sysupgrade_policy, __SYSUPGRADE_MAX, tb, blob_data(msg), blob_len(msg));
 584         if (!tb[SYSUPGRADE_PATH] || !tb[SYSUPGRADE_PREFIX])
 585                 return UBUS_STATUS_INVALID_ARGUMENT;
 586
 587         if (validate_firmware_image_call(blobmsg_get_string(tb[SYSUPGRADE_PATH]))) {
 588                 sysupgrade_error(ctx, req, "Firmware image couldn't be validated");
 589                 return UBUS_STATUS_UNKNOWN_ERROR;
 590         }
 591
 592         blobmsg_parse(validation_policy, __VALIDATION_MAX, validation, blob_data(b.head), blob_len(b.head));
 593
 594         valid = validation[VALIDATION_VALID] && blobmsg_get_bool(validation[VALIDATION_VALID]);
 595         forceable = validation[VALIDATION_FORCEABLE] && blobmsg_get_bool(validation[VALIDATION_FORCEABLE]);
 596         allow_backup = validation[VALIDATION_ALLOW_BACKUP] && blobmsg_get_bool(validation[VALIDATION_ALLOW_BACKUP]);
 597
 598         if (!valid) {
 599                 if (!forceable) {
 600                         sysupgrade_error(ctx, req, "Firmware image is broken and cannot be installed");
 601                         return UBUS_STATUS_NOT_SUPPORTED;
 602                 } else if (!tb[SYSUPGRADE_FORCE] || !blobmsg_get_bool(tb[SYSUPGRADE_FORCE])) {
 603                         sysupgrade_error(ctx, req, "Firmware image is invalid");
 604                         return UBUS_STATUS_NOT_SUPPORTED;
 605                 }
 606         } else if (!allow_backup && tb[SYSUPGRADE_BACKUP]) {
 607                 sysupgrade_error(ctx, req, "Firmware image doesn't allow preserving a backup");
 608                 return UBUS_STATUS_NOT_SUPPORTED;
 609         }
 610
 611         sysupgrade_exec_upgraded(blobmsg_get_string(tb[SYSUPGRADE_PREFIX]),
 612                                  blobmsg_get_string(tb[SYSUPGRADE_PATH]),
 613                                  tb[SYSUPGRADE_BACKUP] ? blobmsg_get_string(tb[SYSUPGRADE_BACKUP]) : NULL,
 614                                  tb[SYSUPGRADE_COMMAND] ? blobmsg_get_string(tb[SYSUPGRADE_COMMAND]) : NULL,
 615                                  tb[SYSUPGRADE_OPTIONS]);
 616
 617         /* sysupgrade_exec_upgraded() will never return unless something has gone wrong */
 618         return UBUS_STATUS_UNKNOWN_ERROR;
 619 }
 620
 621 static void
 622 procd_subscribe_cb(struct ubus_context *ctx, struct ubus_object *obj)
 623 {
 624         notify = obj->has_subscribers;
 625 }
 626
 627
 628 static const struct ubus_method system_methods[] = {
 629         UBUS_METHOD_NOARG("board", system_board),
 630         UBUS_METHOD_NOARG("info",  system_info),
 631         UBUS_METHOD_NOARG("reboot", system_reboot),
 632         UBUS_METHOD("watchdog", watchdog_set, watchdog_policy),
 633         UBUS_METHOD("signal", proc_signal, signal_policy),
 634         UBUS_METHOD("validate_firmware_image", validate_firmware_image, validate_firmware_image_policy),
 635         UBUS_METHOD("sysupgrade", sysupgrade, sysupgrade_policy),
 636 };
 637
 638 static struct ubus_object_type system_object_type =
 639         UBUS_OBJECT_TYPE("system", system_methods);
 640
 641 static struct ubus_object system_object = {
 642         .name = "system",
 643         .type = &system_object_type,
 644         .methods = system_methods,
 645         .n_methods = ARRAY_SIZE(system_methods),
 646         .subscribe_cb = procd_subscribe_cb,
 647 };
 648
 649 void
 650 procd_bcast_event(char *event, struct blob_attr *msg)
 651 {
 652         int ret;
 653
 654         if (!notify)
 655                 return;
 656
 657         ret = ubus_notify(_ctx, &system_object, event, msg, -1);
 658         if (ret)
 659                 fprintf(stderr, "Failed to notify log: %s\n", ubus_strerror(ret));
 660 }
 661
 662 void ubus_init_system(struct ubus_context *ctx)
 663 {
 664         int ret;
 665
 666         _ctx = ctx;
 667         ret = ubus_add_object(ctx, &system_object);
 668         if (ret)
 669                 ERROR("Failed to add object: %s\n", ubus_strerror(ret));
 670 }