src/rrd_dump.c

   1 /*****************************************************************************
   2  * RRDtool 1.4.3  Copyright by Tobi Oetiker, 1997-2010
   3  *****************************************************************************
   4  * rrd_dump  Display a RRD
   5  *****************************************************************************
   6  * $Id$
   7  * $Log$
   8  * Revision 1.7  2004/05/25 20:53:21  oetiker
   9  * prevent small leak when resources are exhausted -- Mike Slifcak
  10  *
  11  * Revision 1.6  2004/05/25 20:51:49  oetiker
  12  * Update displayed copyright messages to be consistent. -- Mike Slifcak
  13  *
  14  * Revision 1.5  2003/02/13 07:05:27  oetiker
  15  * Find attached the patch I promised to send to you. Please note that there
  16  * are three new source files (src/rrd_is_thread_safe.h, src/rrd_thread_safe.c
  17  * and src/rrd_not_thread_safe.c) and the introduction of librrd_th. This
  18  * library is identical to librrd, but it contains support code for per-thread
  19  * global variables currently used for error information only. This is similar
  20  * to how errno per-thread variables are implemented.  librrd_th must be linked
  21  * alongside of libpthred
  22  *
  23  * There is also a new file "THREADS", holding some documentation.
  24  *
  25  * -- Peter Stamfest <peter@stamfest.at>
  26  *
  27  * Revision 1.4  2002/02/01 20:34:49  oetiker
  28  * fixed version number and date/time
  29  *
  30  * Revision 1.3  2001/03/10 23:54:39  oetiker
  31  * Support for COMPUTE data sources (CDEF data sources). Removes the RPN
  32  * parser and calculator from rrd_graph and puts then in a new file,
  33  * rrd_rpncalc.c. Changes to core files rrd_create and rrd_update. Some
  34  * clean-up of aberrant behavior stuff, including a bug fix.
  35  * Documentation update (rrdcreate.pod, rrdupdate.pod). Change xml format.
  36  * -- Jake Brutlag <jakeb@corp.webtv.net>
  37  *
  38  * Revision 1.2  2001/03/04 13:01:55  oetiker
  39  *
  40  * Revision 1.1.1.1  2001/02/25 22:25:05  oetiker
  41  * checkin
  42  *
  43  *****************************************************************************/
  44 #include "rrd_tool.h"
  45 #include "rrd_rpncalc.h"
  46 #include "rrd_client.h"
  47
  48 #include <locale.h>
  49
  50 #if !(defined(NETWARE) || defined(WIN32))
  51 extern char *tzname[2];
  52 #endif
  53
  54 //Local prototypes
  55 size_t rrd_dump_opt_cb_fileout(
  56     const void *data,
  57     size_t len,
  58     void *user);
  59
  60 int rrd_dump_opt_r(
  61     const char *filename,
  62     char *outname,
  63     int opt_noheader);
  64
  65 int rrd_dump_cb_r(
  66     const char *filename,
  67     int opt_header,
  68     rrd_output_callback_t cb,
  69     void *user)
  70 {
  71     unsigned int i, ii, ix, iii = 0;
  72     time_t    now;
  73     char      somestring[255];
  74     rrd_value_t my_cdp;
  75     off_t     rra_base, rra_start, rra_next;
  76     rrd_file_t *rrd_file;
  77     rrd_t     rrd;
  78     rrd_value_t value;
  79     struct tm tm;
  80     char *old_locale = "";
  81
  82 //These two macros are local defines to clean up visible code from its redndancy
  83 //and make it easier to read.
  84 #define CB_PUTS(str)                                            \
  85     cb((str), strlen((str)), user)
  86 #define CB_FMTS(...) do {                                       \
  87     char buffer[256];                                           \
  88     snprintf (buffer, sizeof(buffer), __VA_ARGS__);             \
  89     CB_PUTS (buffer);                                           \
  90     } while (0)
  91 //These macros are to be undefined at the end of this function
  92
  93     //Check if we got a (valid) callback method
  94     if (!cb) {
  95         return (-1);
  96     }
  97
  98     rrd_init(&rrd);
  99
 100     rrd_file = rrd_open(filename, &rrd, RRD_READONLY | RRD_READAHEAD);
 101     if (rrd_file == NULL) {
 102         rrd_free(&rrd);
 103         return (-1);
 104     }
 105
 106     old_locale = setlocale(LC_NUMERIC, "C");
 107
 108
 109     if (opt_header == 1) {
 110         CB_PUTS("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
 111         CB_PUTS("<!DOCTYPE rrd SYSTEM \"http://oss.oetiker.ch/rrdtool/rrdtool.dtd\">\n");
 112         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 113         CB_PUTS("<rrd>\n");
 114     } else if (opt_header == 2) {
 115         CB_PUTS("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
 116         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 117         CB_PUTS("<rrd xmlns=\"http://oss.oetiker.ch/rrdtool/rrdtool-dump.xml\" "
 118                 "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n");
 119         CB_PUTS("\txsi:schemaLocation=\"http://oss.oetiker.ch/rrdtool/rrdtool-dump.xml "
 120                 "http://oss.oetiker.ch/rrdtool/rrdtool-dump.xsd\">\n");
 121     } else {
 122         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 123         CB_PUTS("<rrd>\n");
 124     }
 125
 126     if (atoi(rrd.stat_head->version) <= 3) {
 127         CB_FMTS("\t<version>%s</version>\n", RRD_VERSION3);
 128     } else {
 129         CB_FMTS("\t<version>%s</version>\n", RRD_VERSION);
 130     }
 131
 132     CB_FMTS("\t<step>%lu</step> <!-- Seconds -->\n",
 133         rrd.stat_head->pdp_step);
 134
 135 #ifdef HAVE_STRFTIME
 136     localtime_r(&rrd.live_head->last_up, &tm);
 137     strftime(somestring, 255, "%Y-%m-%d %H:%M:%S %Z", &tm);
 138 #else
 139 # error "Need strftime"
 140 #endif
 141     CB_FMTS("\t<lastupdate>%lld</lastupdate> <!-- %s -->\n\n",
 142         (long long int) rrd.live_head->last_up, somestring);
 143     for (i = 0; i < rrd.stat_head->ds_cnt; i++) {
 144         CB_PUTS("\t<ds>\n");
 145
 146         CB_FMTS("\t\t<name> %s </name>\n", rrd.ds_def[i].ds_nam);
 147
 148         CB_FMTS("\t\t<type> %s </type>\n", rrd.ds_def[i].dst);
 149
 150         if (dst_conv(rrd.ds_def[i].dst) != DST_CDEF) {
 151             CB_FMTS("\t\t<minimal_heartbeat>%lu</minimal_heartbeat>\n",
 152                     rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt);
 153
 154             if (isnan(rrd.ds_def[i].par[DS_min_val].u_val)) {
 155                 CB_PUTS("\t\t<min>NaN</min>\n");
 156             } else {
 157                 CB_FMTS("\t\t<min>%0.10e</min>\n",
 158                     rrd.ds_def[i].par[DS_min_val].u_val);
 159             }
 160
 161             if (isnan(rrd.ds_def[i].par[DS_max_val].u_val)) {
 162                 CB_PUTS("\t\t<max>NaN</max>\n");
 163             } else {
 164                 CB_FMTS("\t\t<max>%0.10e</max>\n",
 165                     rrd.ds_def[i].par[DS_max_val].u_val);
 166             }
 167         } else {        /* DST_CDEF */
 168             char     *str = NULL;
 169
 170             rpn_compact2str((rpn_cdefds_t *) &(rrd.ds_def[i].par[DS_cdef]),
 171                 rrd.ds_def, &str);
 172
 173             //Splitting into 3 writes to avoid allocating memory
 174             //This is better compared to snprintf as str may be of arbitrary size
 175             CB_PUTS("\t\t<cdef> ");
 176             CB_PUTS(str);
 177             CB_PUTS(" </cdef>\n");
 178
 179             free(str);
 180         }
 181
 182         CB_PUTS("\n\t\t<!-- PDP Status -->\n");
 183         CB_FMTS("\t\t<last_ds>%s</last_ds>\n",
 184             rrd.pdp_prep[i].last_ds);
 185
 186         if (isnan(rrd.pdp_prep[i].scratch[PDP_val].u_val)) {
 187             CB_PUTS("\t\t<value>NaN</value>\n");
 188         } else {
 189             CB_FMTS("\t\t<value>%0.10e</value>\n",
 190                 rrd.pdp_prep[i].scratch[PDP_val].u_val);
 191         }
 192
 193         CB_FMTS("\t\t<unknown_sec> %lu </unknown_sec>\n",
 194             rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt);
 195
 196         CB_PUTS("\t</ds>\n\n");
 197     }
 198
 199     CB_PUTS("\t<!-- Round Robin Archives -->\n");
 200
 201     rra_base = rrd_file->header_len;
 202     rra_next = rra_base;
 203
 204     for (i = 0; i < rrd.stat_head->rra_cnt; i++) {
 205
 206         long      timer = 0;
 207
 208         rra_start = rra_next;
 209         rra_next += (rrd.stat_head->ds_cnt
 210                      * rrd.rra_def[i].row_cnt * sizeof(rrd_value_t));
 211
 212         CB_PUTS("\t<rra>\n");
 213
 214         CB_FMTS("\t\t<cf>%s</cf>\n", rrd.rra_def[i].cf_nam);
 215
 216         CB_FMTS("\t\t<pdp_per_row>%lu</pdp_per_row> <!-- %lu seconds -->\n\n",
 217             rrd.rra_def[i].pdp_cnt,
 218             rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step);
 219
 220         /* support for RRA parameters */
 221         CB_PUTS("\t\t<params>\n");
 222
 223         switch (cf_conv(rrd.rra_def[i].cf_nam)) {
 224         case CF_HWPREDICT:
 225         case CF_MHWPREDICT:
 226             CB_FMTS("\t\t<hw_alpha>%0.10e</hw_alpha>\n",
 227                 rrd.rra_def[i].par[RRA_hw_alpha].u_val);
 228
 229             CB_FMTS("\t\t<hw_beta>%0.10e</hw_beta>\n",
 230                 rrd.rra_def[i].par[RRA_hw_beta].u_val);
 231
 232             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 233                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 234             break;
 235         case CF_SEASONAL:
 236         case CF_DEVSEASONAL:
 237             CB_FMTS("\t\t<seasonal_gamma>%0.10e</seasonal_gamma>\n",
 238                 rrd.rra_def[i].par[RRA_seasonal_gamma].u_val);
 239
 240             CB_FMTS("\t\t<seasonal_smooth_idx>%lu</seasonal_smooth_idx>\n",
 241                 rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt);
 242
 243             if (atoi(rrd.stat_head->version) >= 4) {
 244                 CB_FMTS("\t\t<smoothing_window>%0.10e</smoothing_window>\n",
 245                     rrd.rra_def[i].par[RRA_seasonal_smoothing_window].u_val);
 246             }
 247
 248             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 249                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 250             break;
 251         case CF_FAILURES:
 252             CB_FMTS("\t\t<delta_pos>%0.10e</delta_pos>\n",
 253                 rrd.rra_def[i].par[RRA_delta_pos].u_val);
 254
 255             CB_FMTS("\t\t<delta_neg>%0.10e</delta_neg>\n",
 256                 rrd.rra_def[i].par[RRA_delta_neg].u_val);
 257
 258             CB_FMTS("\t\t<window_len>%lu</window_len>\n",
 259                 rrd.rra_def[i].par[RRA_window_len].u_cnt);
 260
 261             CB_FMTS("\t\t<failure_threshold>%lu</failure_threshold>\n",
 262                 rrd.rra_def[i].par[RRA_failure_threshold].u_cnt);
 263
 264             /* fall thru */
 265         case CF_DEVPREDICT:
 266             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 267                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 268             break;
 269         case CF_AVERAGE:
 270         case CF_MAXIMUM:
 271         case CF_MINIMUM:
 272         case CF_LAST:
 273         default:
 274             CB_FMTS("\t\t<xff>%0.10e</xff>\n",
 275                 rrd.rra_def[i].par[RRA_cdp_xff_val].u_val);
 276             break;
 277         }
 278
 279         CB_PUTS("\t\t</params>\n");
 280         CB_PUTS("\t\t<cdp_prep>\n");
 281
 282         for (ii = 0; ii < rrd.stat_head->ds_cnt; ii++) {
 283             unsigned long ivalue;
 284
 285             CB_PUTS("\t\t\t<ds>\n");
 286             /* support for exporting all CDP parameters */
 287             /* parameters common to all CFs */
 288             /* primary_val and secondary_val do not need to be saved between updates
 289              * so strictly speaking they could be omitted.
 290              * However, they can be useful for diagnostic purposes, so are included here. */
 291             value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 292                 scratch[CDP_primary_val].u_val;
 293             if (isnan(value)) {
 294                 CB_PUTS("\t\t\t<primary_value>NaN</primary_value>\n");
 295             } else {
 296                 CB_FMTS("\t\t\t<primary_value>%0.10e</primary_value>\n", value);
 297             }
 298
 299             value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 300                 scratch[CDP_secondary_val].u_val;
 301             if (isnan(value)) {
 302                 CB_PUTS("\t\t\t<secondary_value>NaN</secondary_value>\n");
 303             } else {
 304                 CB_FMTS("\t\t\t<secondary_value>%0.10e</secondary_value>\n", value);
 305             }
 306
 307             switch (cf_conv(rrd.rra_def[i].cf_nam)) {
 308             case CF_HWPREDICT:
 309             case CF_MHWPREDICT:
 310                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 311                     scratch[CDP_hw_intercept].u_val;
 312                 if (isnan(value)) {
 313                     CB_PUTS("\t\t\t<intercept>NaN</intercept>\n");
 314                 } else {
 315                     CB_FMTS("\t\t\t<intercept>%0.10e</intercept>\n", value);
 316                 }
 317
 318                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 319                     scratch[CDP_hw_last_intercept].u_val;
 320                 if (isnan(value)) {
 321                     CB_PUTS("\t\t\t<last_intercept>NaN</last_intercept>\n");
 322                 } else {
 323                     CB_FMTS("\t\t\t<last_intercept>%0.10e</last_intercept>\n", value);
 324                 }
 325
 326                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 327                     scratch[CDP_hw_slope].u_val;
 328                 if (isnan(value)) {
 329                     CB_PUTS("\t\t\t<slope>NaN</slope>\n");
 330                 } else {
 331                     CB_FMTS("\t\t\t<slope>%0.10e</slope>\n", value);
 332                 }
 333
 334                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 335                     scratch[CDP_hw_last_slope].u_val;
 336                 if (isnan(value)) {
 337                     CB_PUTS("\t\t\t<last_slope>NaN</last_slope>\n");
 338                 } else {
 339                     CB_FMTS("\t\t\t<last_slope>%0.10e</last_slope>\n", value);
 340                 }
 341
 342                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 343                     scratch[CDP_null_count].u_cnt;
 344                 CB_FMTS("\t\t\t<nan_count>%lu</nan_count>\n", ivalue);
 345
 346                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 347                     scratch[CDP_last_null_count].u_cnt;
 348                 CB_FMTS("\t\t\t<last_nan_count>%lu</last_nan_count>\n", ivalue);
 349                 break;
 350             case CF_SEASONAL:
 351             case CF_DEVSEASONAL:
 352                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 353                     scratch[CDP_hw_seasonal].u_val;
 354                 if (isnan(value)) {
 355                     CB_PUTS("\t\t\t<seasonal>NaN</seasonal>\n");
 356                 } else {
 357                     CB_FMTS("\t\t\t<seasonal>%0.10e</seasonal>\n", value);
 358                 }
 359
 360                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 361                     scratch[CDP_hw_last_seasonal].u_val;
 362                 if (isnan(value)) {
 363                     CB_PUTS("\t\t\t<last_seasonal>NaN</last_seasonal>\n");
 364                 } else {
 365                     CB_FMTS("\t\t\t<last_seasonal>%0.10e</last_seasonal>\n", value);
 366                 }
 367
 368                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 369                     scratch[CDP_init_seasonal].u_cnt;
 370                 CB_FMTS("\t\t\t<init_flag>%lu</init_flag>\n", ivalue);
 371                 break;
 372             case CF_DEVPREDICT:
 373                 break;
 374             case CF_FAILURES:
 375             {
 376                 unsigned short vidx;
 377                 char *violations_array = (char *) ((void *)
 378                     rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].scratch);
 379                 CB_PUTS("\t\t\t<history>");
 380                 for (vidx = 0;
 381                     vidx < rrd.rra_def[i].par[RRA_window_len].u_cnt;
 382                     ++vidx) {
 383                     CB_FMTS("%d", violations_array[vidx]);
 384                 }
 385                 CB_PUTS("</history>\n");
 386             }
 387                 break;
 388             case CF_AVERAGE:
 389             case CF_MAXIMUM:
 390             case CF_MINIMUM:
 391             case CF_LAST:
 392             default:
 393                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].scratch[CDP_val].u_val;
 394                 if (isnan(value)) {
 395                     CB_PUTS("\t\t\t<value>NaN</value>\n");
 396                 } else {
 397                     CB_FMTS("\t\t\t<value>%0.10e</value>\n", value);
 398                 }
 399
 400                 CB_FMTS("\t\t\t<unknown_datapoints>%lu</unknown_datapoints>\n",
 401                     rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 402                         scratch[CDP_unkn_pdp_cnt].u_cnt);
 403                 break;
 404             }
 405             CB_PUTS("\t\t\t</ds>\n");
 406         }
 407         CB_PUTS("\t\t</cdp_prep>\n");
 408
 409         CB_PUTS("\t\t<database>\n");
 410         rrd_seek(rrd_file, (rra_start + (rrd.rra_ptr[i].cur_row + 1)
 411                             * rrd.stat_head->ds_cnt
 412                             * sizeof(rrd_value_t)), SEEK_SET);
 413         timer = -(long)(rrd.rra_def[i].row_cnt - 1);
 414         ii = rrd.rra_ptr[i].cur_row;
 415         for (ix = 0; ix < rrd.rra_def[i].row_cnt; ix++) {
 416             ii++;
 417             if (ii >= rrd.rra_def[i].row_cnt) {
 418                 rrd_seek(rrd_file, rra_start, SEEK_SET);
 419                 ii = 0; /* wrap if max row cnt is reached */
 420             }
 421             now = (rrd.live_head->last_up
 422                    - rrd.live_head->last_up
 423                    % (rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step))
 424                 + (timer * rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step);
 425
 426             timer++;
 427 #if HAVE_STRFTIME
 428             localtime_r(&now, &tm);
 429             strftime(somestring, 255, "%Y-%m-%d %H:%M:%S %Z", &tm);
 430 #else
 431 # error "Need strftime"
 432 #endif
 433             CB_FMTS("\t\t\t<!-- %s / %lld --> <row>",  somestring, (long long int) now);
 434             for (iii = 0; iii < rrd.stat_head->ds_cnt; iii++) {
 435                 rrd_read(rrd_file, &my_cdp, sizeof(rrd_value_t) * 1);
 436                 if (isnan(my_cdp)) {
 437                     CB_PUTS("<v>NaN</v>");
 438                 } else {
 439                     CB_FMTS("<v>%0.10e</v>", my_cdp);
 440                 }
 441             }
 442             CB_PUTS("</row>\n");
 443         }
 444         CB_PUTS("\t\t</database>\n\t</rra>\n");
 445     }
 446
 447     CB_PUTS("</rrd>\n");
 448
 449     rrd_free(&rrd);
 450
 451     setlocale(LC_NUMERIC, old_locale);
 452
 453     return rrd_close(rrd_file);
 454
 455 //Undefining the previously defined shortcuts
 456 //See start of this function
 457 #undef CB_PUTS
 458 #undef CB_FMTS
 459 //End of macro undefining
 460
 461 }
 462
 463 size_t rrd_dump_opt_cb_fileout(
 464     const void *data,
 465     size_t len,
 466     void *user)
 467 {
 468     return fwrite(data, 1, len, (FILE *)user);
 469 }
 470
 471 int rrd_dump_opt_r(
 472     const char *filename,
 473     char *outname,
 474     int opt_noheader)
 475 {
 476     FILE     *out_file;
 477     int       res;
 478
 479     out_file = NULL;
 480     if (outname) {
 481         if (!(out_file = fopen(outname, "w"))) {
 482             return (-1);
 483         }
 484     } else {
 485         out_file = stdout;
 486     }
 487
 488     res = rrd_dump_cb_r(filename, opt_noheader, rrd_dump_opt_cb_fileout, (void *)out_file);
 489
 490     if (out_file != stdout) {
 491         fclose(out_file);
 492     }
 493
 494     return res;
 495 }
 496
 497 /* backward compatibility with 1.2.x */
 498 int rrd_dump_r(
 499     const char *filename,
 500     char *outname)
 501 {
 502     return rrd_dump_opt_r(filename, outname, 0);
 503 }
 504
 505 int rrd_dump(
 506     int argc,
 507     char **argv)
 508 {
 509     int       rc;
 510     /**
 511      * 0 = no header
 512      * 1 = dtd header
 513      * 2 = xsd header
 514      */
 515     int       opt_header = 1;
 516     char     *opt_daemon = NULL;
 517
 518     /* init rrd clean */
 519
 520     optind = 0;
 521     opterr = 0;         /* initialize getopt */
 522
 523     while (42) {/* ha ha */
 524         int       opt;
 525         int       option_index = 0;
 526         static struct option long_options[] = {
 527             {"daemon", required_argument, 0, 'd'},
 528             {"header", required_argument, 0, 'h'},
 529             {"no-header", no_argument, 0, 'n'},
 530             {0, 0, 0, 0}
 531         };
 532
 533         opt = getopt_long(argc, argv, "d:h:n", long_options, &option_index);
 534
 535         if (opt == EOF)
 536             break;
 537
 538         switch (opt) {
 539         case 'd':
 540             if (opt_daemon != NULL)
 541                     free (opt_daemon);
 542             opt_daemon = strdup (optarg);
 543             if (opt_daemon == NULL)
 544             {
 545                 rrd_set_error ("strdup failed.");
 546                 return (-1);
 547             }
 548             break;
 549
 550         case 'n':
 551            opt_header = 0;
 552            break;
 553
 554         case 'h':
 555            if (strcmp(optarg, "dtd") == 0) {
 556                 opt_header = 1;
 557            } else if (strcmp(optarg, "xsd") == 0) {
 558                 opt_header = 2;
 559            } else if (strcmp(optarg, "none") == 0) {
 560                 opt_header = 0;
 561            }
 562            break;
 563
 564         default:
 565             rrd_set_error("usage rrdtool %s [--header|-h {none,xsd,dtd}] [--no-header]"
 566                           "file.rrd [file.xml]", argv[0]);
 567             return (-1);
 568             break;
 569         }
 570     }                   /* while (42) */
 571
 572     if ((argc - optind) < 1 || (argc - optind) > 2) {
 573         rrd_set_error("usage rrdtool %s [--header|-h {none,xsd,dtd}] [--no-header]"
 574                       "file.rrd [file.xml]", argv[0]);
 575         return (-1);
 576     }
 577
 578     rc = rrdc_flush_if_daemon(opt_daemon, argv[optind]);
 579     if (opt_daemon) free(opt_daemon);
 580     if (rc) return (rc);
 581
 582     if ((argc - optind) == 2) {
 583         rc = rrd_dump_opt_r(argv[optind], argv[optind + 1], opt_header);
 584     } else {
 585         rc = rrd_dump_opt_r(argv[optind], NULL, opt_header);
 586     }
 587
 588     return rc;
 589 }