src/rrd_dump.c

   1 /*****************************************************************************
   2  * RRDtool 1.3.2  Copyright by Tobi Oetiker, 1997-2008
   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 #ifdef HAVE_LOCALE_H
  49 #include <locale.h>
  50 #endif
  51
  52 #if !(defined(NETWARE) || defined(WIN32))
  53 extern char *tzname[2];
  54 #endif
  55
  56 //Local prototypes
  57 size_t rrd_dump_opt_cb_fileout(
  58     const void *data,
  59     size_t len,
  60     void *user);
  61
  62
  63 int rrd_dump_cb_r(
  64     const char *filename,
  65     int opt_header,
  66     rrd_output_callback_t cb,
  67     void *user)
  68 {
  69     unsigned int i, ii, ix, iii = 0;
  70     time_t    now;
  71     char      somestring[255];
  72     rrd_value_t my_cdp;
  73     off_t     rra_base, rra_start, rra_next;
  74     rrd_file_t *rrd_file;
  75     rrd_t     rrd;
  76     rrd_value_t value;
  77     struct tm tm;
  78     char *old_locale = "";
  79
  80 //These two macros are local defines to clean up visible code from its redndancy
  81 //and make it easier to read.
  82 #define CB_PUTS(str)                                            \
  83     cb((str), strlen((str)), user)
  84 #define CB_FMTS(...) do {                                       \
  85     char buffer[256];                                           \
  86     snprintf (buffer, sizeof(buffer), __VA_ARGS__);             \
  87     CB_PUTS (buffer);                                           \
  88     } while (0)
  89 //These macros are to be undefined at the end of this function
  90
  91     //Check if we got a (valid) callback method
  92     if (!cb) {
  93         return (-1);
  94     }
  95
  96     rrd_init(&rrd);
  97
  98     rrd_file = rrd_open(filename, &rrd, RRD_READONLY | RRD_READAHEAD);
  99     if (rrd_file == NULL) {
 100         rrd_free(&rrd);
 101         return (-1);
 102     }
 103
 104 #ifdef HAVE_SETLOCALE
 105     old_locale = setlocale(LC_NUMERIC, "C");
 106 #endif
 107
 108     if (opt_header == 1) {
 109         CB_PUTS("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
 110         CB_PUTS("<!DOCTYPE rrd SYSTEM \"http://oss.oetiker.ch/rrdtool/rrdtool.dtd\">\n");
 111         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 112         CB_PUTS("<rrd>\n");
 113     } else if (opt_header == 2) {
 114         CB_PUTS("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
 115         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 116         CB_PUTS("<rrd xmlns=\"http://oss.oetiker.ch/rrdtool/rrdtool-dump.xml\" "
 117                 "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n");
 118         CB_PUTS("\txsi:schemaLocation=\"http://oss.oetiker.ch/rrdtool/rrdtool-dump.xml "
 119                 "http://oss.oetiker.ch/rrdtool/rrdtool-dump.xsd\">\n");
 120     } else {
 121         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 122         CB_PUTS("<rrd>\n");
 123     }
 124
 125     if (atoi(rrd.stat_head->version) <= 3) {
 126         CB_FMTS("\t<version>%s</version>\n", RRD_VERSION3);
 127     } else {
 128         CB_FMTS("\t<version>%s</version>\n", RRD_VERSION);
 129     }
 130
 131     CB_FMTS("\t<step>%lu</step> <!-- Seconds -->\n",
 132         rrd.stat_head->pdp_step);
 133
 134 #ifdef HAVE_STRFTIME
 135     localtime_r(&rrd.live_head->last_up, &tm);
 136     strftime(somestring, 255, "%Y-%m-%d %H:%M:%S %Z", &tm);
 137 #else
 138 # error "Need strftime"
 139 #endif
 140     CB_FMTS("\t<lastupdate>%lld</lastupdate> <!-- %s -->\n\n",
 141         (long long) rrd.live_head->last_up, somestring);
 142     for (i = 0; i < rrd.stat_head->ds_cnt; i++) {
 143         CB_PUTS("\t<ds>\n");
 144
 145         CB_FMTS("\t\t<name> %s </name>\n", rrd.ds_def[i].ds_nam);
 146
 147         CB_FMTS("\t\t<type> %s </type>\n", rrd.ds_def[i].dst);
 148
 149         if (dst_conv(rrd.ds_def[i].dst) != DST_CDEF) {
 150             CB_FMTS("\t\t<minimal_heartbeat>%lu</minimal_heartbeat>\n",
 151                     rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt);
 152
 153             if (isnan(rrd.ds_def[i].par[DS_min_val].u_val)) {
 154                 CB_PUTS("\t\t<min>NaN</min>\n");
 155             } else {
 156                 CB_FMTS("\t\t<min>%0.10e</min>\n",
 157                     rrd.ds_def[i].par[DS_min_val].u_val);
 158             }
 159
 160             if (isnan(rrd.ds_def[i].par[DS_max_val].u_val)) {
 161                 CB_PUTS("\t\t<max>NaN</max>\n");
 162             } else {
 163                 CB_FMTS("\t\t<max>%0.10e</max>\n",
 164                     rrd.ds_def[i].par[DS_max_val].u_val);
 165             }
 166         } else {        /* DST_CDEF */
 167             char     *str = NULL;
 168
 169             rpn_compact2str((rpn_cdefds_t *) &(rrd.ds_def[i].par[DS_cdef]),
 170                 rrd.ds_def, &str);
 171
 172             //Splitting into 3 writes to avoid allocating memory
 173             //This is better compared to snprintf as str may be of arbitrary size
 174             CB_PUTS("\t\t<cdef> ");
 175             CB_PUTS(str);
 176             CB_PUTS(" </cdef>\n");
 177
 178             free(str);
 179         }
 180
 181         CB_PUTS("\n\t\t<!-- PDP Status -->\n");
 182         CB_FMTS("\t\t<last_ds>%s</last_ds>\n",
 183             rrd.pdp_prep[i].last_ds);
 184
 185         if (isnan(rrd.pdp_prep[i].scratch[PDP_val].u_val)) {
 186             CB_PUTS("\t\t<value>NaN</value>\n");
 187         } else {
 188             CB_FMTS("\t\t<value>%0.10e</value>\n",
 189                 rrd.pdp_prep[i].scratch[PDP_val].u_val);
 190         }
 191
 192         CB_FMTS("\t\t<unknown_sec> %lu </unknown_sec>\n",
 193             rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt);
 194
 195         CB_PUTS("\t</ds>\n\n");
 196     }
 197
 198     CB_PUTS("\t<!-- Round Robin Archives -->\n");
 199
 200     rra_base = rrd_file->header_len;
 201     rra_next = rra_base;
 202
 203     for (i = 0; i < rrd.stat_head->rra_cnt; i++) {
 204
 205         long      timer = 0;
 206
 207         rra_start = rra_next;
 208         rra_next += (rrd.stat_head->ds_cnt
 209                      * rrd.rra_def[i].row_cnt * sizeof(rrd_value_t));
 210
 211         CB_PUTS("\t<rra>\n");
 212
 213         CB_FMTS("\t\t<cf>%s</cf>\n", rrd.rra_def[i].cf_nam);
 214
 215         CB_FMTS("\t\t<pdp_per_row>%lu</pdp_per_row> <!-- %lu seconds -->\n\n",
 216             rrd.rra_def[i].pdp_cnt,
 217             rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step);
 218
 219         /* support for RRA parameters */
 220         CB_PUTS("\t\t<params>\n");
 221
 222         switch (cf_conv(rrd.rra_def[i].cf_nam)) {
 223         case CF_HWPREDICT:
 224         case CF_MHWPREDICT:
 225             CB_FMTS("\t\t<hw_alpha>%0.10e</hw_alpha>\n",
 226                 rrd.rra_def[i].par[RRA_hw_alpha].u_val);
 227
 228             CB_FMTS("\t\t<hw_beta>%0.10e</hw_beta>\n",
 229                 rrd.rra_def[i].par[RRA_hw_beta].u_val);
 230
 231             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 232                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 233             break;
 234         case CF_SEASONAL:
 235         case CF_DEVSEASONAL:
 236             CB_FMTS("\t\t<seasonal_gamma>%0.10e</seasonal_gamma>\n",
 237                 rrd.rra_def[i].par[RRA_seasonal_gamma].u_val);
 238
 239             CB_FMTS("\t\t<seasonal_smooth_idx>%lu</seasonal_smooth_idx>\n",
 240                 rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt);
 241
 242             if (atoi(rrd.stat_head->version) >= 4) {
 243                 CB_FMTS("\t\t<smoothing_window>%0.10e</smoothing_window>\n",
 244                     rrd.rra_def[i].par[RRA_seasonal_smoothing_window].u_val);
 245             }
 246
 247             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 248                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 249             break;
 250         case CF_FAILURES:
 251             CB_FMTS("\t\t<delta_pos>%0.10e</delta_pos>\n",
 252                 rrd.rra_def[i].par[RRA_delta_pos].u_val);
 253
 254             CB_FMTS("\t\t<delta_neg>%0.10e</delta_neg>\n",
 255                 rrd.rra_def[i].par[RRA_delta_neg].u_val);
 256
 257             CB_FMTS("\t\t<window_len>%lu</window_len>\n",
 258                 rrd.rra_def[i].par[RRA_window_len].u_cnt);
 259
 260             CB_FMTS("\t\t<failure_threshold>%lu</failure_threshold>\n",
 261                 rrd.rra_def[i].par[RRA_failure_threshold].u_cnt);
 262
 263             /* fall thru */
 264         case CF_DEVPREDICT:
 265             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 266                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 267             break;
 268         case CF_AVERAGE:
 269         case CF_MAXIMUM:
 270         case CF_MINIMUM:
 271         case CF_LAST:
 272         default:
 273             CB_FMTS("\t\t<xff>%0.10e</xff>\n",
 274                 rrd.rra_def[i].par[RRA_cdp_xff_val].u_val);
 275             break;
 276         }
 277
 278         CB_PUTS("\t\t</params>\n");
 279         CB_PUTS("\t\t<cdp_prep>\n");
 280
 281         for (ii = 0; ii < rrd.stat_head->ds_cnt; ii++) {
 282             unsigned long ivalue;
 283
 284             CB_PUTS("\t\t\t<ds>\n");
 285             /* support for exporting all CDP parameters */
 286             /* parameters common to all CFs */
 287             /* primary_val and secondary_val do not need to be saved between updates
 288              * so strictly speaking they could be omitted.
 289              * However, they can be useful for diagnostic purposes, so are included here. */
 290             value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 291                 scratch[CDP_primary_val].u_val;
 292             if (isnan(value)) {
 293                 CB_PUTS("\t\t\t<primary_value>NaN</primary_value>\n");
 294             } else {
 295                 CB_FMTS("\t\t\t<primary_value>%0.10e</primary_value>\n", value);
 296             }
 297
 298             value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 299                 scratch[CDP_secondary_val].u_val;
 300             if (isnan(value)) {
 301                 CB_PUTS("\t\t\t<secondary_value>NaN</secondary_value>\n");
 302             } else {
 303                 CB_FMTS("\t\t\t<secondary_value>%0.10e</secondary_value>\n", value);
 304             }
 305
 306             switch (cf_conv(rrd.rra_def[i].cf_nam)) {
 307             case CF_HWPREDICT:
 308             case CF_MHWPREDICT:
 309                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 310                     scratch[CDP_hw_intercept].u_val;
 311                 if (isnan(value)) {
 312                     CB_PUTS("\t\t\t<intercept>NaN</intercept>\n");
 313                 } else {
 314                     CB_FMTS("\t\t\t<intercept>%0.10e</intercept>\n", value);
 315                 }
 316
 317                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 318                     scratch[CDP_hw_last_intercept].u_val;
 319                 if (isnan(value)) {
 320                     CB_PUTS("\t\t\t<last_intercept>NaN</last_intercept>\n");
 321                 } else {
 322                     CB_FMTS("\t\t\t<last_intercept>%0.10e</last_intercept>\n", value);
 323                 }
 324
 325                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 326                     scratch[CDP_hw_slope].u_val;
 327                 if (isnan(value)) {
 328                     CB_PUTS("\t\t\t<slope>NaN</slope>\n");
 329                 } else {
 330                     CB_FMTS("\t\t\t<slope>%0.10e</slope>\n", value);
 331                 }
 332
 333                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 334                     scratch[CDP_hw_last_slope].u_val;
 335                 if (isnan(value)) {
 336                     CB_PUTS("\t\t\t<last_slope>NaN</last_slope>\n");
 337                 } else {
 338                     CB_FMTS("\t\t\t<last_slope>%0.10e</last_slope>\n", value);
 339                 }
 340
 341                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 342                     scratch[CDP_null_count].u_cnt;
 343                 CB_FMTS("\t\t\t<nan_count>%lu</nan_count>\n", ivalue);
 344
 345                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 346                     scratch[CDP_last_null_count].u_cnt;
 347                 CB_FMTS("\t\t\t<last_nan_count>%lu</last_nan_count>\n", ivalue);
 348                 break;
 349             case CF_SEASONAL:
 350             case CF_DEVSEASONAL:
 351                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 352                     scratch[CDP_hw_seasonal].u_val;
 353                 if (isnan(value)) {
 354                     CB_PUTS("\t\t\t<seasonal>NaN</seasonal>\n");
 355                 } else {
 356                     CB_FMTS("\t\t\t<seasonal>%0.10e</seasonal>\n", value);
 357                 }
 358
 359                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 360                     scratch[CDP_hw_last_seasonal].u_val;
 361                 if (isnan(value)) {
 362                     CB_PUTS("\t\t\t<last_seasonal>NaN</last_seasonal>\n");
 363                 } else {
 364                     CB_FMTS("\t\t\t<last_seasonal>%0.10e</last_seasonal>\n", value);
 365                 }
 366
 367                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 368                     scratch[CDP_init_seasonal].u_cnt;
 369                 CB_FMTS("\t\t\t<init_flag>%lu</init_flag>\n", ivalue);
 370                 break;
 371             case CF_DEVPREDICT:
 372                 break;
 373             case CF_FAILURES:
 374             {
 375                 unsigned short vidx;
 376                 char *violations_array = (char *) ((void *)
 377                     rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].scratch);
 378                 CB_PUTS("\t\t\t<history>");
 379                 for (vidx = 0;
 380                     vidx < rrd.rra_def[i].par[RRA_window_len].u_cnt;
 381                     ++vidx) {
 382                     CB_FMTS("%d", violations_array[vidx]);
 383                 }
 384                 CB_PUTS("</history>\n");
 385             }
 386                 break;
 387             case CF_AVERAGE:
 388             case CF_MAXIMUM:
 389             case CF_MINIMUM:
 390             case CF_LAST:
 391             default:
 392                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].scratch[CDP_val].u_val;
 393                 if (isnan(value)) {
 394                     CB_PUTS("\t\t\t<value>NaN</value>\n");
 395                 } else {
 396                     CB_FMTS("\t\t\t<value>%0.10e</value>\n", value);
 397                 }
 398
 399                 CB_FMTS("\t\t\t<unknown_datapoints>%lu</unknown_datapoints>\n",
 400                     rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 401                         scratch[CDP_unkn_pdp_cnt].u_cnt);
 402                 break;
 403             }
 404             CB_PUTS("\t\t\t</ds>\n");
 405         }
 406         CB_PUTS("\t\t</cdp_prep>\n");
 407
 408         CB_PUTS("\t\t<database>\n");
 409         rrd_seek(rrd_file, (rra_start + (rrd.rra_ptr[i].cur_row + 1)
 410                             * rrd.stat_head->ds_cnt
 411                             * sizeof(rrd_value_t)), SEEK_SET);
 412         timer = -(long)(rrd.rra_def[i].row_cnt - 1);
 413         ii = rrd.rra_ptr[i].cur_row;
 414         for (ix = 0; ix < rrd.rra_def[i].row_cnt; ix++) {
 415             ii++;
 416             if (ii >= rrd.rra_def[i].row_cnt) {
 417                 rrd_seek(rrd_file, rra_start, SEEK_SET);
 418                 ii = 0; /* wrap if max row cnt is reached */
 419             }
 420             now = (rrd.live_head->last_up
 421                    - rrd.live_head->last_up
 422                    % (rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step))
 423                 + (timer * rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step);
 424
 425             timer++;
 426 #if HAVE_STRFTIME
 427             localtime_r(&now, &tm);
 428             strftime(somestring, 255, "%Y-%m-%d %H:%M:%S %Z", &tm);
 429 #else
 430 # error "Need strftime"
 431 #endif
 432             CB_FMTS("\t\t\t<!-- %s / %lld --> <row>",  somestring, (long long) now);
 433             for (iii = 0; iii < rrd.stat_head->ds_cnt; iii++) {
 434                 rrd_read(rrd_file, &my_cdp, sizeof(rrd_value_t) * 1);
 435                 if (isnan(my_cdp)) {
 436                     CB_PUTS("<v>NaN</v>");
 437                 } else {
 438                     CB_FMTS("<v>%0.10e</v>", my_cdp);
 439                 }
 440             }
 441             CB_PUTS("</row>\n");
 442         }
 443         CB_PUTS("\t\t</database>\n\t</rra>\n");
 444     }
 445
 446     CB_PUTS("</rrd>\n");
 447
 448     rrd_free(&rrd);
 449
 450 #ifdef HAVE_SETLOCALE
 451     setlocale(LC_NUMERIC, old_locale);
 452 #endif
 453
 454     return rrd_close(rrd_file);
 455
 456 //Undefining the previously defined shortcuts
 457 //See start of this function
 458 #undef CB_PUTS
 459 #undef CB_FMTS
 460 //End of macro undefining
 461
 462 }
 463
 464 size_t rrd_dump_opt_cb_fileout(
 465     const void *data,
 466     size_t len,
 467     void *user)
 468 {
 469     return fwrite(data, 1, len, (FILE *)user);
 470 }
 471
 472 int rrd_dump_opt_r(
 473     const char *filename,
 474     char *outname,
 475     int opt_noheader)
 476 {
 477     FILE     *out_file;
 478     int       res;
 479
 480     out_file = NULL;
 481     if (outname) {
 482         if (!(out_file = fopen(outname, "w"))) {
 483             return (-1);
 484         }
 485     } else {
 486         out_file = stdout;
 487     }
 488
 489     res = rrd_dump_cb_r(filename, opt_noheader, rrd_dump_opt_cb_fileout, (void *)out_file);
 490
 491     if (out_file != stdout) {
 492         fclose(out_file);
 493     }
 494
 495     return res;
 496 }
 497
 498 /* backward compatibility with 1.2.x */
 499 int rrd_dump_r(
 500     const char *filename,
 501     char *outname)
 502 {
 503     return rrd_dump_opt_r(filename, outname, 0);
 504 }
 505
 506 int rrd_dump(
 507     int argc,
 508     char **argv)
 509 {
 510     int       rc;
 511     /**
 512      * 0 = no header
 513      * 1 = dtd header
 514      * 2 = xsd header
 515      */
 516     int       opt_header = 1;
 517     char     *opt_daemon = NULL;
 518
 519     /* init rrd clean */
 520
 521     optind = 0;
 522     opterr = 0;         /* initialize getopt */
 523
 524     while (42) {/* ha ha */
 525         int       opt;
 526         int       option_index = 0;
 527         static struct option long_options[] = {
 528             {"daemon", required_argument, 0, 'd'},
 529             {"header", required_argument, 0, 'h'},
 530             {"no-header", no_argument, 0, 'n'},
 531             {0, 0, 0, 0}
 532         };
 533
 534         opt = getopt_long(argc, argv, "d:h:n", long_options, &option_index);
 535
 536         if (opt == EOF)
 537             break;
 538
 539         switch (opt) {
 540         case 'd':
 541             if (opt_daemon != NULL)
 542                     free (opt_daemon);
 543             opt_daemon = strdup (optarg);
 544             if (opt_daemon == NULL)
 545             {
 546                 rrd_set_error ("strdup failed.");
 547                 return (-1);
 548             }
 549             break;
 550
 551         case 'n':
 552            opt_header = 0;
 553            break;
 554
 555         case 'h':
 556            if (strcmp(optarg, "dtd") == 0) {
 557                 opt_header = 1;
 558            } else if (strcmp(optarg, "xsd") == 0) {
 559                 opt_header = 2;
 560            } else if (strcmp(optarg, "none") == 0) {
 561                 opt_header = 0;
 562            }
 563            break;
 564
 565         default:
 566             rrd_set_error("usage rrdtool %s [--header|-h {none,xsd,dtd}] [--no-header]"
 567                           "file.rrd [file.xml]", argv[0]);
 568             return (-1);
 569             break;
 570         }
 571     }                   /* while (42) */
 572
 573     if ((argc - optind) < 1 || (argc - optind) > 2) {
 574         rrd_set_error("usage rrdtool %s [--header|-h {none,xsd,dtd}] [--no-header]"
 575                       "file.rrd [file.xml]", argv[0]);
 576         return (-1);
 577     }
 578
 579     rc = rrdc_flush_if_daemon(opt_daemon, argv[optind]);
 580     if (opt_daemon) free(opt_daemon);
 581     if (rc) return (rc);
 582
 583     if ((argc - optind) == 2) {
 584         rc = rrd_dump_opt_r(argv[optind], argv[optind + 1], opt_header);
 585     } else {
 586         rc = rrd_dump_opt_r(argv[optind], NULL, opt_header);
 587     }
 588
 589     return rc;
 590 }