src/config.c

   1 #include "redis.h"
   2
   3 /*-----------------------------------------------------------------------------
   4  * Config file parsing
   5  *----------------------------------------------------------------------------*/
   6
   7 int yesnotoi(char *s) {
   8     if (!strcasecmp(s,"yes")) return 1;
   9     else if (!strcasecmp(s,"no")) return 0;
  10     else return -1;
  11 }
  12
  13 void appendServerSaveParams(time_t seconds, int changes) {
  14     server.saveparams = zrealloc(server.saveparams,sizeof(struct saveparam)*(server.saveparamslen+1));
  15     server.saveparams[server.saveparamslen].seconds = seconds;
  16     server.saveparams[server.saveparamslen].changes = changes;
  17     server.saveparamslen++;
  18 }
  19
  20 void resetServerSaveParams() {
  21     zfree(server.saveparams);
  22     server.saveparams = NULL;
  23     server.saveparamslen = 0;
  24 }
  25
  26 /* I agree, this is a very rudimental way to load a configuration...
  27    will improve later if the config gets more complex */
  28 void loadServerConfig(char *filename) {
  29     FILE *fp;
  30     char buf[REDIS_CONFIGLINE_MAX+1], *err = NULL;
  31     int linenum = 0;
  32     sds line = NULL;
  33
  34     if (filename[0] == '-' && filename[1] == '\0')
  35         fp = stdin;
  36     else {
  37         if ((fp = fopen(filename,"r")) == NULL) {
  38             redisLog(REDIS_WARNING, "Fatal error, can't open config file '%s'", filename);
  39             exit(1);
  40         }
  41     }
  42
  43     while(fgets(buf,REDIS_CONFIGLINE_MAX+1,fp) != NULL) {
  44         sds *argv;
  45         int argc, j;
  46
  47         linenum++;
  48         line = sdsnew(buf);
  49         line = sdstrim(line," \t\r\n");
  50
  51         /* Skip comments and blank lines*/
  52         if (line[0] == '#' || line[0] == '\0') {
  53             sdsfree(line);
  54             continue;
  55         }
  56
  57         /* Split into arguments */
  58         argv = sdssplitargs(line,&argc);
  59         sdstolower(argv[0]);
  60
  61         /* Execute config directives */
  62         if (!strcasecmp(argv[0],"timeout") && argc == 2) {
  63             server.maxidletime = atoi(argv[1]);
  64             if (server.maxidletime < 0) {
  65                 err = "Invalid timeout value"; goto loaderr;
  66             }
  67         } else if (!strcasecmp(argv[0],"port") && argc == 2) {
  68             server.port = atoi(argv[1]);
  69             if (server.port < 1 || server.port > 65535) {
  70                 err = "Invalid port"; goto loaderr;
  71             }
  72         } else if (!strcasecmp(argv[0],"bind") && argc == 2) {
  73             server.bindaddr = zstrdup(argv[1]);
  74         } else if (!strcasecmp(argv[0],"unixsocket") && argc == 2) {
  75             server.unixsocket = zstrdup(argv[1]);
  76         } else if (!strcasecmp(argv[0],"save") && argc == 3) {
  77             int seconds = atoi(argv[1]);
  78             int changes = atoi(argv[2]);
  79             if (seconds < 1 || changes < 0) {
  80                 err = "Invalid save parameters"; goto loaderr;
  81             }
  82             appendServerSaveParams(seconds,changes);
  83         } else if (!strcasecmp(argv[0],"dir") && argc == 2) {
  84             if (chdir(argv[1]) == -1) {
  85                 redisLog(REDIS_WARNING,"Can't chdir to '%s': %s",
  86                     argv[1], strerror(errno));
  87                 exit(1);
  88             }
  89         } else if (!strcasecmp(argv[0],"loglevel") && argc == 2) {
  90             if (!strcasecmp(argv[1],"debug")) server.verbosity = REDIS_DEBUG;
  91             else if (!strcasecmp(argv[1],"verbose")) server.verbosity = REDIS_VERBOSE;
  92             else if (!strcasecmp(argv[1],"notice")) server.verbosity = REDIS_NOTICE;
  93             else if (!strcasecmp(argv[1],"warning")) server.verbosity = REDIS_WARNING;
  94             else {
  95                 err = "Invalid log level. Must be one of debug, notice, warning";
  96                 goto loaderr;
  97             }
  98         } else if (!strcasecmp(argv[0],"logfile") && argc == 2) {
  99             FILE *logfp;
 100
 101             server.logfile = zstrdup(argv[1]);
 102             if (!strcasecmp(server.logfile,"stdout")) {
 103                 zfree(server.logfile);
 104                 server.logfile = NULL;
 105             }
 106             if (server.logfile) {
 107                 /* Test if we are able to open the file. The server will not
 108                  * be able to abort just for this problem later... */
 109                 logfp = fopen(server.logfile,"a");
 110                 if (logfp == NULL) {
 111                     err = sdscatprintf(sdsempty(),
 112                         "Can't open the log file: %s", strerror(errno));
 113                     goto loaderr;
 114                 }
 115                 fclose(logfp);
 116             }
 117         } else if (!strcasecmp(argv[0],"databases") && argc == 2) {
 118             server.dbnum = atoi(argv[1]);
 119             if (server.dbnum < 1) {
 120                 err = "Invalid number of databases"; goto loaderr;
 121             }
 122         } else if (!strcasecmp(argv[0],"include") && argc == 2) {
 123             loadServerConfig(argv[1]);
 124         } else if (!strcasecmp(argv[0],"maxclients") && argc == 2) {
 125             server.maxclients = atoi(argv[1]);
 126         } else if (!strcasecmp(argv[0],"maxmemory") && argc == 2) {
 127             server.maxmemory = memtoll(argv[1],NULL);
 128         } else if (!strcasecmp(argv[0],"maxmemory-policy") && argc == 2) {
 129             if (!strcasecmp(argv[1],"volatile-lru")) {
 130                 server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
 131             } else if (!strcasecmp(argv[1],"volatile-random")) {
 132                 server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
 133             } else if (!strcasecmp(argv[1],"volatile-ttl")) {
 134                 server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
 135             } else if (!strcasecmp(argv[1],"allkeys-lru")) {
 136                 server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
 137             } else if (!strcasecmp(argv[1],"allkeys-random")) {
 138                 server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
 139             } else {
 140                 err = "Invalid maxmemory policy";
 141                 goto loaderr;
 142             }
 143         } else if (!strcasecmp(argv[0],"maxmemory-samples") && argc == 2) {
 144             server.maxmemory_samples = atoi(argv[1]);
 145             if (server.maxmemory_samples <= 0) {
 146                 err = "maxmemory-samples must be 1 or greater";
 147                 goto loaderr;
 148             }
 149         } else if (!strcasecmp(argv[0],"slaveof") && argc == 3) {
 150             server.masterhost = sdsnew(argv[1]);
 151             server.masterport = atoi(argv[2]);
 152             server.replstate = REDIS_REPL_CONNECT;
 153         } else if (!strcasecmp(argv[0],"masterauth") && argc == 2) {
 154                 server.masterauth = zstrdup(argv[1]);
 155         } else if (!strcasecmp(argv[0],"glueoutputbuf") && argc == 2) {
 156             if ((server.glueoutputbuf = yesnotoi(argv[1])) == -1) {
 157                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 158             }
 159         } else if (!strcasecmp(argv[0],"rdbcompression") && argc == 2) {
 160             if ((server.rdbcompression = yesnotoi(argv[1])) == -1) {
 161                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 162             }
 163         } else if (!strcasecmp(argv[0],"activerehashing") && argc == 2) {
 164             if ((server.activerehashing = yesnotoi(argv[1])) == -1) {
 165                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 166             }
 167         } else if (!strcasecmp(argv[0],"daemonize") && argc == 2) {
 168             if ((server.daemonize = yesnotoi(argv[1])) == -1) {
 169                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 170             }
 171         } else if (!strcasecmp(argv[0],"appendonly") && argc == 2) {
 172             if ((server.appendonly = yesnotoi(argv[1])) == -1) {
 173                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 174             }
 175         } else if (!strcasecmp(argv[0],"appendfilename") && argc == 2) {
 176             zfree(server.appendfilename);
 177             server.appendfilename = zstrdup(argv[1]);
 178         } else if (!strcasecmp(argv[0],"no-appendfsync-on-rewrite")
 179                    && argc == 2) {
 180             if ((server.no_appendfsync_on_rewrite= yesnotoi(argv[1])) == -1) {
 181                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 182             }
 183         } else if (!strcasecmp(argv[0],"appendfsync") && argc == 2) {
 184             if (!strcasecmp(argv[1],"no")) {
 185                 server.appendfsync = APPENDFSYNC_NO;
 186             } else if (!strcasecmp(argv[1],"always")) {
 187                 server.appendfsync = APPENDFSYNC_ALWAYS;
 188             } else if (!strcasecmp(argv[1],"everysec")) {
 189                 server.appendfsync = APPENDFSYNC_EVERYSEC;
 190             } else {
 191                 err = "argument must be 'no', 'always' or 'everysec'";
 192                 goto loaderr;
 193             }
 194         } else if (!strcasecmp(argv[0],"requirepass") && argc == 2) {
 195             server.requirepass = zstrdup(argv[1]);
 196         } else if (!strcasecmp(argv[0],"pidfile") && argc == 2) {
 197             zfree(server.pidfile);
 198             server.pidfile = zstrdup(argv[1]);
 199         } else if (!strcasecmp(argv[0],"dbfilename") && argc == 2) {
 200             zfree(server.dbfilename);
 201             server.dbfilename = zstrdup(argv[1]);
 202         } else if (!strcasecmp(argv[0],"vm-enabled") && argc == 2) {
 203             if ((server.vm_enabled = yesnotoi(argv[1])) == -1) {
 204                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 205             }
 206         } else if (!strcasecmp(argv[0],"vm-swap-file") && argc == 2) {
 207             zfree(server.vm_swap_file);
 208             server.vm_swap_file = zstrdup(argv[1]);
 209         } else if (!strcasecmp(argv[0],"vm-max-memory") && argc == 2) {
 210             server.vm_max_memory = memtoll(argv[1],NULL);
 211         } else if (!strcasecmp(argv[0],"vm-page-size") && argc == 2) {
 212             server.vm_page_size = memtoll(argv[1], NULL);
 213         } else if (!strcasecmp(argv[0],"vm-pages") && argc == 2) {
 214             server.vm_pages = memtoll(argv[1], NULL);
 215         } else if (!strcasecmp(argv[0],"vm-max-threads") && argc == 2) {
 216             server.vm_max_threads = strtoll(argv[1], NULL, 10);
 217         } else if (!strcasecmp(argv[0],"hash-max-zipmap-entries") && argc == 2) {
 218             server.hash_max_zipmap_entries = memtoll(argv[1], NULL);
 219         } else if (!strcasecmp(argv[0],"hash-max-zipmap-value") && argc == 2) {
 220             server.hash_max_zipmap_value = memtoll(argv[1], NULL);
 221         } else if (!strcasecmp(argv[0],"list-max-ziplist-entries") && argc == 2){
 222             server.list_max_ziplist_entries = memtoll(argv[1], NULL);
 223         } else if (!strcasecmp(argv[0],"list-max-ziplist-value") && argc == 2) {
 224             server.list_max_ziplist_value = memtoll(argv[1], NULL);
 225         } else if (!strcasecmp(argv[0],"set-max-intset-entries") && argc == 2) {
 226             server.set_max_intset_entries = memtoll(argv[1], NULL);
 227         } else if (!strcasecmp(argv[0],"rename-command") && argc == 3) {
 228             struct redisCommand *cmd = lookupCommand(argv[1]);
 229             int retval;
 230
 231             if (!cmd) {
 232                 err = "No such command in rename-command";
 233                 goto loaderr;
 234             }
 235
 236             /* If the target command name is the emtpy string we just
 237              * remove it from the command table. */
 238             retval = dictDelete(server.commands, argv[1]);
 239             redisAssert(retval == DICT_OK);
 240
 241             /* Otherwise we re-add the command under a different name. */
 242             if (sdslen(argv[2]) != 0) {
 243                 sds copy = sdsdup(argv[2]);
 244
 245                 retval = dictAdd(server.commands, copy, cmd);
 246                 if (retval != DICT_OK) {
 247                     sdsfree(copy);
 248                     err = "Target command name already exists"; goto loaderr;
 249                 }
 250             }
 251         } else {
 252             err = "Bad directive or wrong number of arguments"; goto loaderr;
 253         }
 254         for (j = 0; j < argc; j++)
 255             sdsfree(argv[j]);
 256         zfree(argv);
 257         sdsfree(line);
 258     }
 259     if (fp != stdin) fclose(fp);
 260     return;
 261
 262 loaderr:
 263     fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR ***\n");
 264     fprintf(stderr, "Reading the configuration file, at line %d\n", linenum);
 265     fprintf(stderr, ">>> '%s'\n", line);
 266     fprintf(stderr, "%s\n", err);
 267     exit(1);
 268 }
 269
 270 /*-----------------------------------------------------------------------------
 271  * CONFIG command for remote configuration
 272  *----------------------------------------------------------------------------*/
 273
 274 void configSetCommand(redisClient *c) {
 275     robj *o;
 276     long long ll;
 277     redisAssert(c->argv[2]->encoding == REDIS_ENCODING_RAW);
 278     redisAssert(c->argv[3]->encoding == REDIS_ENCODING_RAW);
 279     o = c->argv[3];
 280
 281     if (!strcasecmp(c->argv[2]->ptr,"dbfilename")) {
 282         zfree(server.dbfilename);
 283         server.dbfilename = zstrdup(o->ptr);
 284     } else if (!strcasecmp(c->argv[2]->ptr,"requirepass")) {
 285         zfree(server.requirepass);
 286         server.requirepass = zstrdup(o->ptr);
 287     } else if (!strcasecmp(c->argv[2]->ptr,"masterauth")) {
 288         zfree(server.masterauth);
 289         server.masterauth = zstrdup(o->ptr);
 290     } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory")) {
 291         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
 292             ll < 0) goto badfmt;
 293         server.maxmemory = ll;
 294         if (server.maxmemory) freeMemoryIfNeeded();
 295     } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-policy")) {
 296         if (!strcasecmp(o->ptr,"volatile-lru")) {
 297             server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
 298         } else if (!strcasecmp(o->ptr,"volatile-random")) {
 299             server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
 300         } else if (!strcasecmp(o->ptr,"volatile-ttl")) {
 301             server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
 302         } else if (!strcasecmp(o->ptr,"allkeys-lru")) {
 303             server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
 304         } else if (!strcasecmp(o->ptr,"allkeys-random")) {
 305             server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
 306         } else {
 307             goto badfmt;
 308         }
 309     } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-samples")) {
 310         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
 311             ll <= 0) goto badfmt;
 312         server.maxmemory_samples = ll;
 313     } else if (!strcasecmp(c->argv[2]->ptr,"timeout")) {
 314         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
 315             ll < 0 || ll > LONG_MAX) goto badfmt;
 316         server.maxidletime = ll;
 317     } else if (!strcasecmp(c->argv[2]->ptr,"appendfsync")) {
 318         if (!strcasecmp(o->ptr,"no")) {
 319             server.appendfsync = APPENDFSYNC_NO;
 320         } else if (!strcasecmp(o->ptr,"everysec")) {
 321             server.appendfsync = APPENDFSYNC_EVERYSEC;
 322         } else if (!strcasecmp(o->ptr,"always")) {
 323             server.appendfsync = APPENDFSYNC_ALWAYS;
 324         } else {
 325             goto badfmt;
 326         }
 327     } else if (!strcasecmp(c->argv[2]->ptr,"no-appendfsync-on-rewrite")) {
 328         int yn = yesnotoi(o->ptr);
 329
 330         if (yn == -1) goto badfmt;
 331         server.no_appendfsync_on_rewrite = yn;
 332     } else if (!strcasecmp(c->argv[2]->ptr,"appendonly")) {
 333         int old = server.appendonly;
 334         int new = yesnotoi(o->ptr);
 335
 336         if (new == -1) goto badfmt;
 337         if (old != new) {
 338             if (new == 0) {
 339                 stopAppendOnly();
 340             } else {
 341                 if (startAppendOnly() == REDIS_ERR) {
 342                     addReplyError(c,
 343                         "Unable to turn on AOF. Check server logs.");
 344                     return;
 345                 }
 346             }
 347         }
 348     } else if (!strcasecmp(c->argv[2]->ptr,"save")) {
 349         int vlen, j;
 350         sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);
 351
 352         /* Perform sanity check before setting the new config:
 353          * - Even number of args
 354          * - Seconds >= 1, changes >= 0 */
 355         if (vlen & 1) {
 356             sdsfreesplitres(v,vlen);
 357             goto badfmt;
 358         }
 359         for (j = 0; j < vlen; j++) {
 360             char *eptr;
 361             long val;
 362
 363             val = strtoll(v[j], &eptr, 10);
 364             if (eptr[0] != '\0' ||
 365                 ((j & 1) == 0 && val < 1) ||
 366                 ((j & 1) == 1 && val < 0)) {
 367                 sdsfreesplitres(v,vlen);
 368                 goto badfmt;
 369             }
 370         }
 371         /* Finally set the new config */
 372         resetServerSaveParams();
 373         for (j = 0; j < vlen; j += 2) {
 374             time_t seconds;
 375             int changes;
 376
 377             seconds = strtoll(v[j],NULL,10);
 378             changes = strtoll(v[j+1],NULL,10);
 379             appendServerSaveParams(seconds, changes);
 380         }
 381         sdsfreesplitres(v,vlen);
 382     } else {
 383         addReplyErrorFormat(c,"Unsupported CONFIG parameter: %s",
 384             (char*)c->argv[2]->ptr);
 385         return;
 386     }
 387     addReply(c,shared.ok);
 388     return;
 389
 390 badfmt: /* Bad format errors */
 391     addReplyErrorFormat(c,"Invalid argument '%s' for CONFIG SET '%s'",
 392             (char*)o->ptr,
 393             (char*)c->argv[2]->ptr);
 394 }
 395
 396 void configGetCommand(redisClient *c) {
 397     robj *o = c->argv[2];
 398     void *replylen = addDeferredMultiBulkLength(c);
 399     char *pattern = o->ptr;
 400     char buf[128];
 401     int matches = 0;
 402     redisAssert(o->encoding == REDIS_ENCODING_RAW);
 403
 404     if (stringmatch(pattern,"dbfilename",0)) {
 405         addReplyBulkCString(c,"dbfilename");
 406         addReplyBulkCString(c,server.dbfilename);
 407         matches++;
 408     }
 409     if (stringmatch(pattern,"requirepass",0)) {
 410         addReplyBulkCString(c,"requirepass");
 411         addReplyBulkCString(c,server.requirepass);
 412         matches++;
 413     }
 414     if (stringmatch(pattern,"masterauth",0)) {
 415         addReplyBulkCString(c,"masterauth");
 416         addReplyBulkCString(c,server.masterauth);
 417         matches++;
 418     }
 419     if (stringmatch(pattern,"maxmemory",0)) {
 420         ll2string(buf,sizeof(buf),server.maxmemory);
 421         addReplyBulkCString(c,"maxmemory");
 422         addReplyBulkCString(c,buf);
 423         matches++;
 424     }
 425     if (stringmatch(pattern,"maxmemory-policy",0)) {
 426         char *s;
 427
 428         switch(server.maxmemory_policy) {
 429         case REDIS_MAXMEMORY_VOLATILE_LRU: s = "volatile-lru"; break;
 430         case REDIS_MAXMEMORY_VOLATILE_TTL: s = "volatile-ttl"; break;
 431         case REDIS_MAXMEMORY_VOLATILE_RANDOM: s = "volatile-random"; break;
 432         case REDIS_MAXMEMORY_ALLKEYS_LRU: s = "allkeys-lru"; break;
 433         case REDIS_MAXMEMORY_ALLKEYS_RANDOM: s = "allkeys-random"; break;
 434         default: s = "unknown"; break; /* too harmless to panic */
 435         }
 436         addReplyBulkCString(c,"maxmemory-policy");
 437         addReplyBulkCString(c,s);
 438         matches++;
 439     }
 440     if (stringmatch(pattern,"maxmemory-samples",0)) {
 441         ll2string(buf,sizeof(buf),server.maxmemory_samples);
 442         addReplyBulkCString(c,"maxmemory-samples");
 443         addReplyBulkCString(c,buf);
 444         matches++;
 445     }
 446     if (stringmatch(pattern,"timeout",0)) {
 447         ll2string(buf,sizeof(buf),server.maxidletime);
 448         addReplyBulkCString(c,"timeout");
 449         addReplyBulkCString(c,buf);
 450         matches++;
 451     }
 452     if (stringmatch(pattern,"appendonly",0)) {
 453         addReplyBulkCString(c,"appendonly");
 454         addReplyBulkCString(c,server.appendonly ? "yes" : "no");
 455         matches++;
 456     }
 457     if (stringmatch(pattern,"no-appendfsync-on-rewrite",0)) {
 458         addReplyBulkCString(c,"no-appendfsync-on-rewrite");
 459         addReplyBulkCString(c,server.no_appendfsync_on_rewrite ? "yes" : "no");
 460         matches++;
 461     }
 462     if (stringmatch(pattern,"appendfsync",0)) {
 463         char *policy;
 464
 465         switch(server.appendfsync) {
 466         case APPENDFSYNC_NO: policy = "no"; break;
 467         case APPENDFSYNC_EVERYSEC: policy = "everysec"; break;
 468         case APPENDFSYNC_ALWAYS: policy = "always"; break;
 469         default: policy = "unknown"; break; /* too harmless to panic */
 470         }
 471         addReplyBulkCString(c,"appendfsync");
 472         addReplyBulkCString(c,policy);
 473         matches++;
 474     }
 475     if (stringmatch(pattern,"save",0)) {
 476         sds buf = sdsempty();
 477         int j;
 478
 479         for (j = 0; j < server.saveparamslen; j++) {
 480             buf = sdscatprintf(buf,"%ld %d",
 481                     server.saveparams[j].seconds,
 482                     server.saveparams[j].changes);
 483             if (j != server.saveparamslen-1)
 484                 buf = sdscatlen(buf," ",1);
 485         }
 486         addReplyBulkCString(c,"save");
 487         addReplyBulkCString(c,buf);
 488         sdsfree(buf);
 489         matches++;
 490     }
 491     setDeferredMultiBulkLength(c,replylen,matches*2);
 492 }
 493
 494 void configCommand(redisClient *c) {
 495     if (!strcasecmp(c->argv[1]->ptr,"set")) {
 496         if (c->argc != 4) goto badarity;
 497         configSetCommand(c);
 498     } else if (!strcasecmp(c->argv[1]->ptr,"get")) {
 499         if (c->argc != 3) goto badarity;
 500         configGetCommand(c);
 501     } else if (!strcasecmp(c->argv[1]->ptr,"resetstat")) {
 502         if (c->argc != 2) goto badarity;
 503         server.stat_keyspace_hits = 0;
 504         server.stat_keyspace_misses = 0;
 505         server.stat_numcommands = 0;
 506         server.stat_numconnections = 0;
 507         server.stat_expiredkeys = 0;
 508         addReply(c,shared.ok);
 509     } else {
 510         addReplyError(c,
 511             "CONFIG subcommand must be one of GET, SET, RESETSTAT");
 512     }
 513     return;
 514
 515 badarity:
 516     addReplyErrorFormat(c,"Wrong number of arguments for CONFIG %s",
 517         (char*) c->argv[1]->ptr);
 518 }