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, NULL);
 107     setlocale(LC_NUMERIC, "C");
 108
 109
 110     if (opt_header == 1) {
 111         CB_PUTS("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
 112         CB_PUTS("<!DOCTYPE rrd SYSTEM \"http://oss.oetiker.ch/rrdtool/rrdtool.dtd\">\n");
 113         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 114         CB_PUTS("<rrd>\n");
 115     } else if (opt_header == 2) {
 116         CB_PUTS("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
 117         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 118         CB_PUTS("<rrd xmlns=\"http://oss.oetiker.ch/rrdtool/rrdtool-dump.xml\" "
 119                 "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n");
 120         CB_PUTS("\txsi:schemaLocation=\"http://oss.oetiker.ch/rrdtool/rrdtool-dump.xml "
 121                 "http://oss.oetiker.ch/rrdtool/rrdtool-dump.xsd\">\n");
 122     } else {
 123         CB_PUTS("<!-- Round Robin Database Dump -->\n");
 124         CB_PUTS("<rrd>\n");
 125     }
 126
 127     if (atoi(rrd.stat_head->version) <= 3) {
 128         CB_FMTS("\t<version>%s</version>\n", RRD_VERSION3);
 129     } else {
 130         CB_FMTS("\t<version>%s</version>\n", RRD_VERSION);
 131     }
 132
 133     CB_FMTS("\t<step>%lu</step> <!-- Seconds -->\n",
 134         rrd.stat_head->pdp_step);
 135
 136 #ifdef HAVE_STRFTIME
 137     localtime_r(&rrd.live_head->last_up, &tm);
 138     strftime(somestring, 255, "%Y-%m-%d %H:%M:%S %Z", &tm);
 139 #else
 140 # error "Need strftime"
 141 #endif
 142     CB_FMTS("\t<lastupdate>%lld</lastupdate> <!-- %s -->\n\n",
 143         (long long int) rrd.live_head->last_up, somestring);
 144     for (i = 0; i < rrd.stat_head->ds_cnt; i++) {
 145         CB_PUTS("\t<ds>\n");
 146
 147         CB_FMTS("\t\t<name> %s </name>\n", rrd.ds_def[i].ds_nam);
 148
 149         CB_FMTS("\t\t<type> %s </type>\n", rrd.ds_def[i].dst);
 150
 151         if (dst_conv(rrd.ds_def[i].dst) != DST_CDEF) {
 152             CB_FMTS("\t\t<minimal_heartbeat>%lu</minimal_heartbeat>\n",
 153                     rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt);
 154
 155             if (isnan(rrd.ds_def[i].par[DS_min_val].u_val)) {
 156                 CB_PUTS("\t\t<min>NaN</min>\n");
 157             } else {
 158                 CB_FMTS("\t\t<min>%0.10e</min>\n",
 159                     rrd.ds_def[i].par[DS_min_val].u_val);
 160             }
 161
 162             if (isnan(rrd.ds_def[i].par[DS_max_val].u_val)) {
 163                 CB_PUTS("\t\t<max>NaN</max>\n");
 164             } else {
 165                 CB_FMTS("\t\t<max>%0.10e</max>\n",
 166                     rrd.ds_def[i].par[DS_max_val].u_val);
 167             }
 168         } else {        /* DST_CDEF */
 169             char     *str = NULL;
 170
 171             rpn_compact2str((rpn_cdefds_t *) &(rrd.ds_def[i].par[DS_cdef]),
 172                 rrd.ds_def, &str);
 173
 174             //Splitting into 3 writes to avoid allocating memory
 175             //This is better compared to snprintf as str may be of arbitrary size
 176             CB_PUTS("\t\t<cdef> ");
 177             CB_PUTS(str);
 178             CB_PUTS(" </cdef>\n");
 179
 180             free(str);
 181         }
 182
 183         CB_PUTS("\n\t\t<!-- PDP Status -->\n");
 184         CB_FMTS("\t\t<last_ds>%s</last_ds>\n",
 185             rrd.pdp_prep[i].last_ds);
 186
 187         if (isnan(rrd.pdp_prep[i].scratch[PDP_val].u_val)) {
 188             CB_PUTS("\t\t<value>NaN</value>\n");
 189         } else {
 190             CB_FMTS("\t\t<value>%0.10e</value>\n",
 191                 rrd.pdp_prep[i].scratch[PDP_val].u_val);
 192         }
 193
 194         CB_FMTS("\t\t<unknown_sec> %lu </unknown_sec>\n",
 195             rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt);
 196
 197         CB_PUTS("\t</ds>\n\n");
 198     }
 199
 200     CB_PUTS("\t<!-- Round Robin Archives -->\n");
 201
 202     rra_base = rrd_file->header_len;
 203     rra_next = rra_base;
 204
 205     for (i = 0; i < rrd.stat_head->rra_cnt; i++) {
 206
 207         long      timer = 0;
 208
 209         rra_start = rra_next;
 210         rra_next += (rrd.stat_head->ds_cnt
 211                      * rrd.rra_def[i].row_cnt * sizeof(rrd_value_t));
 212
 213         CB_PUTS("\t<rra>\n");
 214
 215         CB_FMTS("\t\t<cf>%s</cf>\n", rrd.rra_def[i].cf_nam);
 216
 217         CB_FMTS("\t\t<pdp_per_row>%lu</pdp_per_row> <!-- %lu seconds -->\n\n",
 218             rrd.rra_def[i].pdp_cnt,
 219             rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step);
 220
 221         /* support for RRA parameters */
 222         CB_PUTS("\t\t<params>\n");
 223
 224         switch (cf_conv(rrd.rra_def[i].cf_nam)) {
 225         case CF_HWPREDICT:
 226         case CF_MHWPREDICT:
 227             CB_FMTS("\t\t<hw_alpha>%0.10e</hw_alpha>\n",
 228                 rrd.rra_def[i].par[RRA_hw_alpha].u_val);
 229
 230             CB_FMTS("\t\t<hw_beta>%0.10e</hw_beta>\n",
 231                 rrd.rra_def[i].par[RRA_hw_beta].u_val);
 232
 233             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 234                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 235             break;
 236         case CF_SEASONAL:
 237         case CF_DEVSEASONAL:
 238             CB_FMTS("\t\t<seasonal_gamma>%0.10e</seasonal_gamma>\n",
 239                 rrd.rra_def[i].par[RRA_seasonal_gamma].u_val);
 240
 241             CB_FMTS("\t\t<seasonal_smooth_idx>%lu</seasonal_smooth_idx>\n",
 242                 rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt);
 243
 244             if (atoi(rrd.stat_head->version) >= 4) {
 245                 CB_FMTS("\t\t<smoothing_window>%0.10e</smoothing_window>\n",
 246                     rrd.rra_def[i].par[RRA_seasonal_smoothing_window].u_val);
 247             }
 248
 249             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 250                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 251             break;
 252         case CF_FAILURES:
 253             CB_FMTS("\t\t<delta_pos>%0.10e</delta_pos>\n",
 254                 rrd.rra_def[i].par[RRA_delta_pos].u_val);
 255
 256             CB_FMTS("\t\t<delta_neg>%0.10e</delta_neg>\n",
 257                 rrd.rra_def[i].par[RRA_delta_neg].u_val);
 258
 259             CB_FMTS("\t\t<window_len>%lu</window_len>\n",
 260                 rrd.rra_def[i].par[RRA_window_len].u_cnt);
 261
 262             CB_FMTS("\t\t<failure_threshold>%lu</failure_threshold>\n",
 263                 rrd.rra_def[i].par[RRA_failure_threshold].u_cnt);
 264
 265             /* fall thru */
 266         case CF_DEVPREDICT:
 267             CB_FMTS("\t\t<dependent_rra_idx>%lu</dependent_rra_idx>\n",
 268                 rrd.rra_def[i].par[RRA_dependent_rra_idx].u_cnt);
 269             break;
 270         case CF_AVERAGE:
 271         case CF_MAXIMUM:
 272         case CF_MINIMUM:
 273         case CF_LAST:
 274         default:
 275             CB_FMTS("\t\t<xff>%0.10e</xff>\n",
 276                 rrd.rra_def[i].par[RRA_cdp_xff_val].u_val);
 277             break;
 278         }
 279
 280         CB_PUTS("\t\t</params>\n");
 281         CB_PUTS("\t\t<cdp_prep>\n");
 282
 283         for (ii = 0; ii < rrd.stat_head->ds_cnt; ii++) {
 284             unsigned long ivalue;
 285
 286             CB_PUTS("\t\t\t<ds>\n");
 287             /* support for exporting all CDP parameters */
 288             /* parameters common to all CFs */
 289             /* primary_val and secondary_val do not need to be saved between updates
 290              * so strictly speaking they could be omitted.
 291              * However, they can be useful for diagnostic purposes, so are included here. */
 292             value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 293                 scratch[CDP_primary_val].u_val;
 294             if (isnan(value)) {
 295                 CB_PUTS("\t\t\t<primary_value>NaN</primary_value>\n");
 296             } else {
 297                 CB_FMTS("\t\t\t<primary_value>%0.10e</primary_value>\n", value);
 298             }
 299
 300             value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 301                 scratch[CDP_secondary_val].u_val;
 302             if (isnan(value)) {
 303                 CB_PUTS("\t\t\t<secondary_value>NaN</secondary_value>\n");
 304             } else {
 305                 CB_FMTS("\t\t\t<secondary_value>%0.10e</secondary_value>\n", value);
 306             }
 307
 308             switch (cf_conv(rrd.rra_def[i].cf_nam)) {
 309             case CF_HWPREDICT:
 310             case CF_MHWPREDICT:
 311                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 312                     scratch[CDP_hw_intercept].u_val;
 313                 if (isnan(value)) {
 314                     CB_PUTS("\t\t\t<intercept>NaN</intercept>\n");
 315                 } else {
 316                     CB_FMTS("\t\t\t<intercept>%0.10e</intercept>\n", value);
 317                 }
 318
 319                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 320                     scratch[CDP_hw_last_intercept].u_val;
 321                 if (isnan(value)) {
 322                     CB_PUTS("\t\t\t<last_intercept>NaN</last_intercept>\n");
 323                 } else {
 324                     CB_FMTS("\t\t\t<last_intercept>%0.10e</last_intercept>\n", value);
 325                 }
 326
 327                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 328                     scratch[CDP_hw_slope].u_val;
 329                 if (isnan(value)) {
 330                     CB_PUTS("\t\t\t<slope>NaN</slope>\n");
 331                 } else {
 332                     CB_FMTS("\t\t\t<slope>%0.10e</slope>\n", value);
 333                 }
 334
 335                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 336                     scratch[CDP_hw_last_slope].u_val;
 337                 if (isnan(value)) {
 338                     CB_PUTS("\t\t\t<last_slope>NaN</last_slope>\n");
 339                 } else {
 340                     CB_FMTS("\t\t\t<last_slope>%0.10e</last_slope>\n", value);
 341                 }
 342
 343                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 344                     scratch[CDP_null_count].u_cnt;
 345                 CB_FMTS("\t\t\t<nan_count>%lu</nan_count>\n", ivalue);
 346
 347                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 348                     scratch[CDP_last_null_count].u_cnt;
 349                 CB_FMTS("\t\t\t<last_nan_count>%lu</last_nan_count>\n", ivalue);
 350                 break;
 351             case CF_SEASONAL:
 352             case CF_DEVSEASONAL:
 353                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 354                     scratch[CDP_hw_seasonal].u_val;
 355                 if (isnan(value)) {
 356                     CB_PUTS("\t\t\t<seasonal>NaN</seasonal>\n");
 357                 } else {
 358                     CB_FMTS("\t\t\t<seasonal>%0.10e</seasonal>\n", value);
 359                 }
 360
 361                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 362                     scratch[CDP_hw_last_seasonal].u_val;
 363                 if (isnan(value)) {
 364                     CB_PUTS("\t\t\t<last_seasonal>NaN</last_seasonal>\n");
 365                 } else {
 366                     CB_FMTS("\t\t\t<last_seasonal>%0.10e</last_seasonal>\n", value);
 367                 }
 368
 369                 ivalue = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 370                     scratch[CDP_init_seasonal].u_cnt;
 371                 CB_FMTS("\t\t\t<init_flag>%lu</init_flag>\n", ivalue);
 372                 break;
 373             case CF_DEVPREDICT:
 374                 break;
 375             case CF_FAILURES:
 376             {
 377                 unsigned short vidx;
 378                 char *violations_array = (char *) ((void *)
 379                     rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].scratch);
 380                 CB_PUTS("\t\t\t<history>");
 381                 for (vidx = 0;
 382                     vidx < rrd.rra_def[i].par[RRA_window_len].u_cnt;
 383                     ++vidx) {
 384                     CB_FMTS("%d", violations_array[vidx]);
 385                 }
 386                 CB_PUTS("</history>\n");
 387             }
 388                 break;
 389             case CF_AVERAGE:
 390             case CF_MAXIMUM:
 391             case CF_MINIMUM:
 392             case CF_LAST:
 393             default:
 394                 value = rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].scratch[CDP_val].u_val;
 395                 if (isnan(value)) {
 396                     CB_PUTS("\t\t\t<value>NaN</value>\n");
 397                 } else {
 398                     CB_FMTS("\t\t\t<value>%0.10e</value>\n", value);
 399                 }
 400
 401                 CB_FMTS("\t\t\t<unknown_datapoints>%lu</unknown_datapoints>\n",
 402                     rrd.cdp_prep[i * rrd.stat_head->ds_cnt + ii].
 403                         scratch[CDP_unkn_pdp_cnt].u_cnt);
 404                 break;
 405             }
 406             CB_PUTS("\t\t\t</ds>\n");
 407         }
 408         CB_PUTS("\t\t</cdp_prep>\n");
 409
 410         CB_PUTS("\t\t<database>\n");
 411         rrd_seek(rrd_file, (rra_start + (rrd.rra_ptr[i].cur_row + 1)
 412                             * rrd.stat_head->ds_cnt
 413                             * sizeof(rrd_value_t)), SEEK_SET);
 414         timer = -(long)(rrd.rra_def[i].row_cnt - 1);
 415         ii = rrd.rra_ptr[i].cur_row;
 416         for (ix = 0; ix < rrd.rra_def[i].row_cnt; ix++) {
 417             ii++;
 418             if (ii >= rrd.rra_def[i].row_cnt) {
 419                 rrd_seek(rrd_file, rra_start, SEEK_SET);
 420                 ii = 0; /* wrap if max row cnt is reached */
 421             }
 422             now = (rrd.live_head->last_up
 423                    - rrd.live_head->last_up
 424                    % (rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step))
 425                 + (timer * rrd.rra_def[i].pdp_cnt * rrd.stat_head->pdp_step);
 426
 427             timer++;
 428 #if HAVE_STRFTIME
 429             localtime_r(&now, &tm);
 430             strftime(somestring, 255, "%Y-%m-%d %H:%M:%S %Z", &tm);
 431 #else
 432 # error "Need strftime"
 433 #endif
 434             CB_FMTS("\t\t\t<!-- %s / %lld --> <row>",  somestring, (long long int) now);
 435             for (iii = 0; iii < rrd.stat_head->ds_cnt; iii++) {
 436                 rrd_read(rrd_file, &my_cdp, sizeof(rrd_value_t) * 1);
 437                 if (isnan(my_cdp)) {
 438                     CB_PUTS("<v>NaN</v>");
 439                 } else {
 440                     CB_FMTS("<v>%0.10e</v>", my_cdp);
 441                 }
 442             }
 443             CB_PUTS("</row>\n");
 444         }
 445         CB_PUTS("\t\t</database>\n\t</rra>\n");
 446     }
 447
 448     CB_PUTS("</rrd>\n");
 449
 450     rrd_free(&rrd);
 451
 452     setlocale(LC_NUMERIC, old_locale);
 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 }