lib/cib/cib_utils.c

/* */
This source file includes following definitions.
cib_get_generation
cib_version_details
cib_diff_version_details
get_object_path
get_object_parent
get_object_root
createEmptyCib
cib_acl_enabled
cib_perform_op
cib_create_op
cib_native_callback
cib_native_notify
cib_metadata
verify_cib_options
cib_pref
cib_read_config
cib_internal_config_changed
cib_internal_op
cib_apply_patch_event
   1 /*
   2  * Original copyright 2004 International Business Machines
   3  * Later changes copyright 2008-2021 the Pacemaker project contributors
   4  *
   5  * The version control history for this file may have further details.
   6  *
   7  * This source code is licensed under the GNU Lesser General Public License
   8  * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
   9  */
  10 #include <crm_internal.h>
  11 #include <unistd.h>
  12 #include <stdlib.h>
  13 #include <stdio.h>
  14 #include <stdarg.h>
  15 #include <string.h>
  16 #include <sys/utsname.h>
  17 
  18 #include <glib.h>
  19 
  20 #include <crm/crm.h>
  21 #include <crm/cib/internal.h>
  22 #include <crm/msg_xml.h>
  23 #include <crm/common/iso8601_internal.h>
  24 #include <crm/common/xml.h>
  25 #include <crm/common/xml_internal.h>
  26 #include <crm/pengine/rules.h>
  27 
  28 struct config_root_s {
  29     const char *name;
  30     const char *parent;
  31     const char *path;
  32 };
  33 
  34  /*
  35   * "//crm_config" will also work in place of "/cib/configuration/crm_config"
  36   * The / prefix means find starting from the root, whereas the // prefix means
  37   * find anywhere and risks multiple matches
  38   */
  39 /* *INDENT-OFF* */
  40 static struct config_root_s known_paths[] = {
  41     { NULL,                         NULL,                 "//cib" },
  42     { XML_TAG_CIB,                  NULL,                 "//cib" },
  43     { XML_CIB_TAG_STATUS,           "/cib",               "//cib/status" },
  44     { XML_CIB_TAG_CONFIGURATION,    "/cib",               "//cib/configuration" },
  45     { XML_CIB_TAG_CRMCONFIG,        "/cib/configuration", "//cib/configuration/crm_config" },
  46     { XML_CIB_TAG_NODES,            "/cib/configuration", "//cib/configuration/nodes" },
  47     { XML_CIB_TAG_RESOURCES,        "/cib/configuration", "//cib/configuration/resources" },
  48     { XML_CIB_TAG_CONSTRAINTS,      "/cib/configuration", "//cib/configuration/constraints" },
  49     { XML_CIB_TAG_OPCONFIG,         "/cib/configuration", "//cib/configuration/op_defaults" },
  50     { XML_CIB_TAG_RSCCONFIG,        "/cib/configuration", "//cib/configuration/rsc_defaults" },
  51     { XML_CIB_TAG_ACLS,             "/cib/configuration", "//cib/configuration/acls" },
  52     { XML_TAG_FENCING_TOPOLOGY,     "/cib/configuration", "//cib/configuration/fencing-topology" },
  53     { XML_CIB_TAG_TAGS,             "/cib/configuration", "//cib/configuration/tags" },
  54     { XML_CIB_TAG_ALERTS,           "/cib/configuration", "//cib/configuration/alerts" },
  55     { XML_CIB_TAG_SECTION_ALL,      NULL,                 "//cib" },
  56 };
  57 /* *INDENT-ON* */
  58 
  59 xmlNode *
  60 cib_get_generation(cib_t * cib)
     /*  */
  61 {
  62     xmlNode *the_cib = NULL;
  63     xmlNode *generation = create_xml_node(NULL, XML_CIB_TAG_GENERATION_TUPPLE);
  64 
  65     cib->cmds->query(cib, NULL, &the_cib, cib_scope_local | cib_sync_call);
  66     if (the_cib != NULL) {
  67         copy_in_properties(generation, the_cib);
  68         free_xml(the_cib);
  69     }
  70 
  71     return generation;
  72 }
  73 
  74 gboolean
  75 cib_version_details(xmlNode * cib, int *admin_epoch, int *epoch, int *updates)
     /*  */
  76 {
  77     *epoch = -1;
  78     *updates = -1;
  79     *admin_epoch = -1;
  80 
  81     if (cib == NULL) {
  82         return FALSE;
  83 
  84     } else {
  85         crm_element_value_int(cib, XML_ATTR_GENERATION, epoch);
  86         crm_element_value_int(cib, XML_ATTR_NUMUPDATES, updates);
  87         crm_element_value_int(cib, XML_ATTR_GENERATION_ADMIN, admin_epoch);
  88     }
  89     return TRUE;
  90 }
  91 
  92 gboolean
  93 cib_diff_version_details(xmlNode * diff, int *admin_epoch, int *epoch, int *updates,
     /*  */
  94                          int *_admin_epoch, int *_epoch, int *_updates)
  95 {
  96     int add[] = { 0, 0, 0 };
  97     int del[] = { 0, 0, 0 };
  98 
  99     xml_patch_versions(diff, add, del);
 100 
 101     *admin_epoch = add[0];
 102     *epoch = add[1];
 103     *updates = add[2];
 104 
 105     *_admin_epoch = del[0];
 106     *_epoch = del[1];
 107     *_updates = del[2];
 108 
 109     return TRUE;
 110 }
 111 
 112 /*
 113  * The caller should never free the return value
 114  */
 115 
 116 const char *
 117 get_object_path(const char *object_type)
     /*  */
 118 {
 119     int lpc = 0;
 120     int max = PCMK__NELEM(known_paths);
 121 
 122     for (; lpc < max; lpc++) {
 123         if ((object_type == NULL && known_paths[lpc].name == NULL)
 124             || pcmk__str_eq(object_type, known_paths[lpc].name, pcmk__str_casei)) {
 125             return known_paths[lpc].path;
 126         }
 127     }
 128     return NULL;
 129 }
 130 
 131 const char *
 132 get_object_parent(const char *object_type)
     /*  */
 133 {
 134     int lpc = 0;
 135     int max = PCMK__NELEM(known_paths);
 136 
 137     for (; lpc < max; lpc++) {
 138         if (pcmk__str_eq(object_type, known_paths[lpc].name, pcmk__str_casei)) {
 139             return known_paths[lpc].parent;
 140         }
 141     }
 142     return NULL;
 143 }
 144 
 145 xmlNode *
 146 get_object_root(const char *object_type, xmlNode * the_root)
     /*  */
 147 {
 148     const char *xpath = get_object_path(object_type);
 149 
 150     if (xpath == NULL) {
 151         return the_root;        /* or return NULL? */
 152     }
 153 
 154     return get_xpath_object(xpath, the_root, LOG_TRACE);
 155 }
 156 
 157 /*!
 158  * \brief Create XML for a new (empty) CIB
 159  *
 160  * \param[in] cib_epoch   What to use as "epoch" CIB property
 161  *
 162  * \return Newly created XML for empty CIB
 163  * \note It is the caller's responsibility to free the result with free_xml().
 164  */
 165 xmlNode *
 166 createEmptyCib(int cib_epoch)
     /*  */
 167 {
 168     xmlNode *cib_root = NULL, *config = NULL;
 169 
 170     cib_root = create_xml_node(NULL, XML_TAG_CIB);
 171     crm_xml_add(cib_root, XML_ATTR_CRM_VERSION, CRM_FEATURE_SET);
 172     crm_xml_add(cib_root, XML_ATTR_VALIDATION, xml_latest_schema());
 173 
 174     crm_xml_add_int(cib_root, XML_ATTR_GENERATION, cib_epoch);
 175     crm_xml_add_int(cib_root, XML_ATTR_NUMUPDATES, 0);
 176     crm_xml_add_int(cib_root, XML_ATTR_GENERATION_ADMIN, 0);
 177 
 178     config = create_xml_node(cib_root, XML_CIB_TAG_CONFIGURATION);
 179     create_xml_node(cib_root, XML_CIB_TAG_STATUS);
 180 
 181     create_xml_node(config, XML_CIB_TAG_CRMCONFIG);
 182     create_xml_node(config, XML_CIB_TAG_NODES);
 183     create_xml_node(config, XML_CIB_TAG_RESOURCES);
 184     create_xml_node(config, XML_CIB_TAG_CONSTRAINTS);
 185 
 186 #if PCMK__RESOURCE_STICKINESS_DEFAULT != 0
 187     {
 188         xmlNode *rsc_defaults = create_xml_node(config, XML_CIB_TAG_RSCCONFIG);
 189         xmlNode *meta = create_xml_node(rsc_defaults, XML_TAG_META_SETS);
 190         xmlNode *nvpair = create_xml_node(meta, XML_CIB_TAG_NVPAIR);
 191 
 192         crm_xml_add(meta, XML_ATTR_ID, "build-resource-defaults");
 193         crm_xml_add(nvpair, XML_ATTR_ID, "build-" XML_RSC_ATTR_STICKINESS);
 194         crm_xml_add(nvpair, XML_NVPAIR_ATTR_NAME, XML_RSC_ATTR_STICKINESS);
 195         crm_xml_add_int(nvpair, XML_NVPAIR_ATTR_VALUE,
 196                         PCMK__RESOURCE_STICKINESS_DEFAULT);
 197     }
 198 #endif
 199     return cib_root;
 200 }
 201 
 202 static bool
 203 cib_acl_enabled(xmlNode *xml, const char *user)
     /*  */
 204 {
 205     bool rc = FALSE;
 206 
 207     if(pcmk_acl_required(user)) {
 208         const char *value = NULL;
 209         GHashTable *options = pcmk__strkey_table(free, free);
 210 
 211         cib_read_config(options, xml);
 212         value = cib_pref(options, "enable-acl");
 213         rc = crm_is_true(value);
 214         g_hash_table_destroy(options);
 215     }
 216 
 217     crm_trace("CIB ACL is %s", rc ? "enabled" : "disabled");
 218     return rc;
 219 }
 220 
 221 int
 222 cib_perform_op(const char *op, int call_options, cib_op_t * fn, gboolean is_query,
     /*  */
 223                const char *section, xmlNode * req, xmlNode * input,
 224                gboolean manage_counters, gboolean * config_changed,
 225                xmlNode * current_cib, xmlNode ** result_cib, xmlNode ** diff, xmlNode ** output)
 226 {
 227     int rc = pcmk_ok;
 228     gboolean check_schema = TRUE;
 229     xmlNode *top = NULL;
 230     xmlNode *scratch = NULL;
 231     xmlNode *local_diff = NULL;
 232 
 233     const char *new_version = NULL;
 234     static struct qb_log_callsite *diff_cs = NULL;
 235     const char *user = crm_element_value(req, F_CIB_USER);
 236     bool with_digest = FALSE;
 237 
 238     crm_trace("Begin %s%s%s op",
 239               (pcmk_is_set(call_options, cib_dryrun)? "dry run of " : ""),
 240               (is_query? "read-only " : ""), op);
 241 
 242     CRM_CHECK(output != NULL, return -ENOMSG);
 243     CRM_CHECK(result_cib != NULL, return -ENOMSG);
 244     CRM_CHECK(config_changed != NULL, return -ENOMSG);
 245 
 246     if(output) {
 247         *output = NULL;
 248     }
 249 
 250     *result_cib = NULL;
 251     *config_changed = FALSE;
 252 
 253     if (fn == NULL) {
 254         return -EINVAL;
 255     }
 256 
 257     if (is_query) {
 258         xmlNode *cib_ro = current_cib;
 259         xmlNode *cib_filtered = NULL;
 260 
 261         if(cib_acl_enabled(cib_ro, user)) {
 262             if(xml_acl_filtered_copy(user, current_cib, current_cib, &cib_filtered)) {
 263                 if (cib_filtered == NULL) {
 264                     crm_debug("Pre-filtered the entire cib");
 265                     return -EACCES;
 266                 }
 267                 cib_ro = cib_filtered;
 268                 crm_log_xml_trace(cib_ro, "filtered");
 269             }
 270         }
 271 
 272         rc = (*fn) (op, call_options, section, req, input, cib_ro, result_cib, output);
 273 
 274         if(output == NULL || *output == NULL) {
 275             /* nothing */
 276 
 277         } else if(cib_filtered == *output) {
 278             cib_filtered = NULL; /* Let them have this copy */
 279 
 280         } else if(*output == current_cib) {
 281             /* They already know not to free it */
 282 
 283         } else if(cib_filtered && (*output)->doc == cib_filtered->doc) {
 284             /* We're about to free the document of which *output is a part */
 285             *output = copy_xml(*output);
 286 
 287         } else if((*output)->doc == current_cib->doc) {
 288             /* Give them a copy they can free */
 289             *output = copy_xml(*output);
 290         }
 291 
 292         free_xml(cib_filtered);
 293         return rc;
 294     }
 295 
 296 
 297     if (pcmk_is_set(call_options, cib_zero_copy)) {
 298         /* Conditional on v2 patch style */
 299 
 300         scratch = current_cib;
 301 
 302         /* Create a shallow copy of current_cib for the version details */
 303         current_cib = create_xml_node(NULL, (const char *)scratch->name);
 304         copy_in_properties(current_cib, scratch);
 305         top = current_cib;
 306 
 307         xml_track_changes(scratch, user, NULL, cib_acl_enabled(scratch, user));
 308         rc = (*fn) (op, call_options, section, req, input, scratch, &scratch, output);
 309 
 310     } else {
 311         scratch = copy_xml(current_cib);
 312         xml_track_changes(scratch, user, NULL, cib_acl_enabled(scratch, user));
 313         rc = (*fn) (op, call_options, section, req, input, current_cib, &scratch, output);
 314 
 315         if(scratch && xml_tracking_changes(scratch) == FALSE) {
 316             crm_trace("Inferring changes after %s op", op);
 317             xml_track_changes(scratch, user, current_cib, cib_acl_enabled(current_cib, user));
 318             xml_calculate_changes(current_cib, scratch);
 319         }
 320         CRM_CHECK(current_cib != scratch, return -EINVAL);
 321     }
 322 
 323     xml_acl_disable(scratch); /* Allow the system to make any additional changes */
 324 
 325     if (rc == pcmk_ok && scratch == NULL) {
 326         rc = -EINVAL;
 327         goto done;
 328 
 329     } else if(rc == pcmk_ok && xml_acl_denied(scratch)) {
 330         crm_trace("ACL rejected part or all of the proposed changes");
 331         rc = -EACCES;
 332         goto done;
 333 
 334     } else if (rc != pcmk_ok) {
 335         goto done;
 336     }
 337 
 338     if (scratch) {
 339         new_version = crm_element_value(scratch, XML_ATTR_CRM_VERSION);
 340 
 341         if (new_version && compare_version(new_version, CRM_FEATURE_SET) > 0) {
 342             crm_err("Discarding update with feature set '%s' greater than our own '%s'",
 343                     new_version, CRM_FEATURE_SET);
 344             rc = -EPROTONOSUPPORT;
 345             goto done;
 346         }
 347     }
 348 
 349     if (current_cib) {
 350         int old = 0;
 351         int new = 0;
 352 
 353         crm_element_value_int(scratch, XML_ATTR_GENERATION_ADMIN, &new);
 354         crm_element_value_int(current_cib, XML_ATTR_GENERATION_ADMIN, &old);
 355 
 356         if (old > new) {
 357             crm_err("%s went backwards: %d -> %d (Opts: 0x%x)",
 358                     XML_ATTR_GENERATION_ADMIN, old, new, call_options);
 359             crm_log_xml_warn(req, "Bad Op");
 360             crm_log_xml_warn(input, "Bad Data");
 361             rc = -pcmk_err_old_data;
 362 
 363         } else if (old == new) {
 364             crm_element_value_int(scratch, XML_ATTR_GENERATION, &new);
 365             crm_element_value_int(current_cib, XML_ATTR_GENERATION, &old);
 366             if (old > new) {
 367                 crm_err("%s went backwards: %d -> %d (Opts: 0x%x)",
 368                         XML_ATTR_GENERATION, old, new, call_options);
 369                 crm_log_xml_warn(req, "Bad Op");
 370                 crm_log_xml_warn(input, "Bad Data");
 371                 rc = -pcmk_err_old_data;
 372             }
 373         }
 374     }
 375 
 376     crm_trace("Massaging CIB contents");
 377     pcmk__strip_xml_text(scratch);
 378     fix_plus_plus_recursive(scratch);
 379 
 380     if (pcmk_is_set(call_options, cib_zero_copy)) {
 381         /* At this point, current_cib is just the 'cib' tag and its properties,
 382          *
 383          * The v1 format would barf on this, but we know the v2 patch
 384          * format only needs it for the top-level version fields
 385          */
 386         local_diff = xml_create_patchset(2, current_cib, scratch, (bool*)config_changed, manage_counters);
 387 
 388     } else {
 389         static time_t expires = 0;
 390         time_t tm_now = time(NULL);
 391 
 392         if (expires < tm_now) {
 393             expires = tm_now + 60;  /* Validate clients are correctly applying v2-style diffs at most once a minute */
 394             with_digest = TRUE;
 395         }
 396 
 397         local_diff = xml_create_patchset(0, current_cib, scratch, (bool*)config_changed, manage_counters);
 398     }
 399 
 400     xml_log_changes(LOG_TRACE, __func__, scratch);
 401     xml_accept_changes(scratch);
 402 
 403     if (diff_cs == NULL) {
 404         diff_cs = qb_log_callsite_get(__PRETTY_FUNCTION__, __FILE__, "diff-validation", LOG_DEBUG, __LINE__, crm_trace_nonlog);
 405     }
 406 
 407     if(local_diff) {
 408         patchset_process_digest(local_diff, current_cib, scratch, with_digest);
 409 
 410         xml_log_patchset(LOG_INFO, __func__, local_diff);
 411         crm_log_xml_trace(local_diff, "raw patch");
 412     }
 413 
 414     if (!pcmk_is_set(call_options, cib_zero_copy) // Original to compare against doesn't exist
 415         && local_diff
 416         && crm_is_callsite_active(diff_cs, LOG_TRACE, 0)) {
 417 
 418         /* Validate the calculated patch set */
 419         int test_rc, format = 1;
 420         xmlNode * c = copy_xml(current_cib);
 421 
 422         crm_element_value_int(local_diff, "format", &format);
 423         test_rc = xml_apply_patchset(c, local_diff, manage_counters);
 424 
 425         if(test_rc != pcmk_ok) {
 426             save_xml_to_file(c,           "PatchApply:calculated", NULL);
 427             save_xml_to_file(current_cib, "PatchApply:input", NULL);
 428             save_xml_to_file(scratch,     "PatchApply:actual", NULL);
 429             save_xml_to_file(local_diff,  "PatchApply:diff", NULL);
 430             crm_err("v%d patchset error, patch failed to apply: %s (%d)", format, pcmk_strerror(test_rc), test_rc);
 431         }
 432         free_xml(c);
 433     }
 434 
 435     if (pcmk__str_eq(section, XML_CIB_TAG_STATUS, pcmk__str_casei)) {
 436         /* Throttle the amount of costly validation we perform due to status updates
 437          * a) we don't really care whats in the status section
 438          * b) we don't validate any of its contents at the moment anyway
 439          */
 440         check_schema = FALSE;
 441     }
 442 
 443     /* === scratch must not be modified after this point ===
 444      * Exceptions, anything in:
 445 
 446      static filter_t filter[] = {
 447      { 0, XML_ATTR_ORIGIN },
 448      { 0, XML_CIB_ATTR_WRITTEN },
 449      { 0, XML_ATTR_UPDATE_ORIG },
 450      { 0, XML_ATTR_UPDATE_CLIENT },
 451      { 0, XML_ATTR_UPDATE_USER },
 452      };
 453      */
 454 
 455     if (*config_changed && !pcmk_is_set(call_options, cib_no_mtime)) {
 456         const char *schema = crm_element_value(scratch, XML_ATTR_VALIDATION);
 457 
 458         pcmk__xe_add_last_written(scratch);
 459         if (schema) {
 460             static int minimum_schema = 0;
 461             int current_schema = get_schema_version(schema);
 462 
 463             if (minimum_schema == 0) {
 464                 minimum_schema = get_schema_version("pacemaker-1.2");
 465             }
 466 
 467             /* Does the CIB support the "update-*" attributes... */
 468             if (current_schema >= minimum_schema) {
 469                 const char *origin = crm_element_value(req, F_ORIG);
 470 
 471                 CRM_LOG_ASSERT(origin != NULL);
 472                 crm_xml_replace(scratch, XML_ATTR_UPDATE_ORIG, origin);
 473                 crm_xml_replace(scratch, XML_ATTR_UPDATE_CLIENT,
 474                                 crm_element_value(req, F_CIB_CLIENTNAME));
 475                 crm_xml_replace(scratch, XML_ATTR_UPDATE_USER, crm_element_value(req, F_CIB_USER));
 476             }
 477         }
 478     }
 479 
 480     crm_trace("Perform validation: %s", pcmk__btoa(check_schema));
 481     if ((rc == pcmk_ok) && check_schema && !validate_xml(scratch, NULL, TRUE)) {
 482         const char *current_schema = crm_element_value(scratch,
 483                                                        XML_ATTR_VALIDATION);
 484 
 485         crm_warn("Updated CIB does not validate against %s schema",
 486                  crm_str(current_schema));
 487         rc = -pcmk_err_schema_validation;
 488     }
 489 
 490   done:
 491 
 492     *result_cib = scratch;
 493     if(rc != pcmk_ok && cib_acl_enabled(current_cib, user)) {
 494         if(xml_acl_filtered_copy(user, current_cib, scratch, result_cib)) {
 495             if (*result_cib == NULL) {
 496                 crm_debug("Pre-filtered the entire cib result");
 497             }
 498             free_xml(scratch);
 499         }
 500     }
 501 
 502     if(diff) {
 503         *diff = local_diff;
 504     } else {
 505         free_xml(local_diff);
 506     }
 507 
 508     free_xml(top);
 509     crm_trace("Done");
 510     return rc;
 511 }
 512 
 513 xmlNode *
 514 cib_create_op(int call_id, const char *token, const char *op, const char *host, const char *section,
     /*  */
 515               xmlNode * data, int call_options, const char *user_name)
 516 {
 517     xmlNode *op_msg = create_xml_node(NULL, "cib_command");
 518 
 519     CRM_CHECK(op_msg != NULL, return NULL);
 520     CRM_CHECK(token != NULL, return NULL);
 521 
 522     crm_xml_add(op_msg, F_XML_TAGNAME, "cib_command");
 523 
 524     crm_xml_add(op_msg, F_TYPE, T_CIB);
 525     crm_xml_add(op_msg, F_CIB_CALLBACK_TOKEN, token);
 526     crm_xml_add(op_msg, F_CIB_OPERATION, op);
 527     crm_xml_add(op_msg, F_CIB_HOST, host);
 528     crm_xml_add(op_msg, F_CIB_SECTION, section);
 529     crm_xml_add_int(op_msg, F_CIB_CALLID, call_id);
 530     if (user_name) {
 531         crm_xml_add(op_msg, F_CIB_USER, user_name);
 532     }
 533     crm_trace("Sending call options: %.8lx, %d", (long)call_options, call_options);
 534     crm_xml_add_int(op_msg, F_CIB_CALLOPTS, call_options);
 535 
 536     if (data != NULL) {
 537         add_message_xml(op_msg, F_CIB_CALLDATA, data);
 538     }
 539 
 540     if (call_options & cib_inhibit_bcast) {
 541         CRM_CHECK((call_options & cib_scope_local), return NULL);
 542     }
 543     return op_msg;
 544 }
 545 
 546 void
 547 cib_native_callback(cib_t * cib, xmlNode * msg, int call_id, int rc)
     /*  */
 548 {
 549     xmlNode *output = NULL;
 550     cib_callback_client_t *blob = NULL;
 551 
 552     if (msg != NULL) {
 553         crm_element_value_int(msg, F_CIB_RC, &rc);
 554         crm_element_value_int(msg, F_CIB_CALLID, &call_id);
 555         output = get_message_xml(msg, F_CIB_CALLDATA);
 556     }
 557 
 558     blob = pcmk__intkey_table_lookup(cib_op_callback_table, call_id);
 559     if (blob == NULL) {
 560         crm_trace("No callback found for call %d", call_id);
 561     }
 562 
 563     if (cib == NULL) {
 564         crm_debug("No cib object supplied");
 565     }
 566 
 567     if (rc == -pcmk_err_diff_resync) {
 568         /* This is an internal value that clients do not and should not care about */
 569         rc = pcmk_ok;
 570     }
 571 
 572     if (blob && blob->callback && (rc == pcmk_ok || blob->only_success == FALSE)) {
 573         crm_trace("Invoking callback %s for call %d", crm_str(blob->id), call_id);
 574         blob->callback(msg, call_id, rc, output, blob->user_data);
 575 
 576     } else if (cib && cib->op_callback == NULL && rc != pcmk_ok) {
 577         crm_warn("CIB command failed: %s", pcmk_strerror(rc));
 578         crm_log_xml_debug(msg, "Failed CIB Update");
 579     }
 580 
 581     /* This may free user_data, so do it after the callback */
 582     if (blob) {
 583         remove_cib_op_callback(call_id, FALSE);
 584     }
 585 
 586     if (cib && cib->op_callback != NULL) {
 587         crm_trace("Invoking global callback for call %d", call_id);
 588         cib->op_callback(msg, call_id, rc, output);
 589     }
 590     crm_trace("OP callback activated for %d", call_id);
 591 }
 592 
 593 void
 594 cib_native_notify(gpointer data, gpointer user_data)
     /*  */
 595 {
 596     xmlNode *msg = user_data;
 597     cib_notify_client_t *entry = data;
 598     const char *event = NULL;
 599 
 600     if (msg == NULL) {
 601         crm_warn("Skipping callback - NULL message");
 602         return;
 603     }
 604 
 605     event = crm_element_value(msg, F_SUBTYPE);
 606 
 607     if (entry == NULL) {
 608         crm_warn("Skipping callback - NULL callback client");
 609         return;
 610 
 611     } else if (entry->callback == NULL) {
 612         crm_warn("Skipping callback - NULL callback");
 613         return;
 614 
 615     } else if (!pcmk__str_eq(entry->event, event, pcmk__str_casei)) {
 616         crm_trace("Skipping callback - event mismatch %p/%s vs. %s", entry, entry->event, event);
 617         return;
 618     }
 619 
 620     crm_trace("Invoking callback for %p/%s event...", entry, event);
 621     entry->callback(event, msg);
 622     crm_trace("Callback invoked...");
 623 }
 624 
 625 static pcmk__cluster_option_t cib_opts[] = {
 626     /* name, legacy name, type, allowed values,
 627      * default value, validator,
 628      * short description,
 629      * long description
 630      */
 631     {
 632         "enable-acl", NULL, "boolean", NULL,
 633         "false", pcmk__valid_boolean,
 634         "Enable Access Control Lists (ACLs) for the CIB",
 635         NULL
 636     },
 637     {
 638         "cluster-ipc-limit", NULL, "integer", NULL,
 639         "500", pcmk__valid_positive_number,
 640         "Maximum IPC message backlog before disconnecting a cluster daemon",
 641         "Raise this if log has \"Evicting client\" messages for cluster daemon"
 642             " PIDs (a good value is the number of resources in the cluster"
 643             " multiplied by the number of nodes)."
 644     },
 645 };
 646 
 647 void
 648 cib_metadata(void)
     /*  */
 649 {
 650     pcmk__print_option_metadata("pacemaker-based", "1.0",
 651                                 "Cluster Information Base manager options",
 652                                 "Cluster options used by Pacemaker's "
 653                                     "Cluster Information Base manager",
 654                                 cib_opts, PCMK__NELEM(cib_opts));
 655 }
 656 
 657 void
 658 verify_cib_options(GHashTable * options)
     /*  */
 659 {
 660     pcmk__validate_cluster_options(options, cib_opts, PCMK__NELEM(cib_opts));
 661 }
 662 
 663 const char *
 664 cib_pref(GHashTable * options, const char *name)
     /*  */
 665 {
 666     return pcmk__cluster_option(options, cib_opts, PCMK__NELEM(cib_opts),
 667                                 name);
 668 }
 669 
 670 gboolean
 671 cib_read_config(GHashTable * options, xmlNode * current_cib)
     /*  */
 672 {
 673     xmlNode *config = NULL;
 674     crm_time_t *now = NULL;
 675 
 676     if (options == NULL || current_cib == NULL) {
 677         return FALSE;
 678     }
 679 
 680     now = crm_time_new(NULL);
 681 
 682     g_hash_table_remove_all(options);
 683 
 684     config = get_object_root(XML_CIB_TAG_CRMCONFIG, current_cib);
 685     if (config) {
 686         pe_unpack_nvpairs(current_cib, config, XML_CIB_TAG_PROPSET, NULL,
 687                           options, CIB_OPTIONS_FIRST, TRUE, now, NULL);
 688     }
 689 
 690     verify_cib_options(options);
 691 
 692     crm_time_free(now);
 693 
 694     return TRUE;
 695 }
 696 
 697 /* v2 and v2 patch formats */
 698 #define XPATH_CONFIG_CHANGE \
 699     "//" XML_CIB_TAG_CRMCONFIG " | " \
 700     "//" XML_DIFF_CHANGE "[contains(@" XML_DIFF_PATH ",'/" XML_CIB_TAG_CRMCONFIG "/')]"
 701 
 702 gboolean
 703 cib_internal_config_changed(xmlNode *diff)
     /*  */
 704 {
 705     gboolean changed = FALSE;
 706 
 707     if (diff) {
 708         xmlXPathObject *xpathObj = xpath_search(diff, XPATH_CONFIG_CHANGE);
 709 
 710         if (numXpathResults(xpathObj) > 0) {
 711             changed = TRUE;
 712         }
 713         freeXpathObject(xpathObj);
 714     }
 715     return changed;
 716 }
 717 
 718 int
 719 cib_internal_op(cib_t * cib, const char *op, const char *host,
     /*  */
 720                 const char *section, xmlNode * data,
 721                 xmlNode ** output_data, int call_options, const char *user_name)
 722 {
 723     int (*delegate) (cib_t * cib, const char *op, const char *host,
 724                      const char *section, xmlNode * data,
 725                      xmlNode ** output_data, int call_options, const char *user_name) =
 726         cib->delegate_fn;
 727 
 728     if(user_name == NULL) {
 729         user_name = getenv("CIB_user");
 730     }
 731 
 732     return delegate(cib, op, host, section, data, output_data, call_options, user_name);
 733 }
 734 
 735 /*!
 736  * \brief Apply a CIB update patch to a given CIB
 737  *
 738  * \param[in]  event   CIB update patch
 739  * \param[in]  input   CIB to patch
 740  * \param[out] output  Resulting CIB after patch
 741  * \param[in]  level   Log the patch at this log level (unless LOG_CRIT)
 742  *
 743  * \return Legacy Pacemaker return code
 744  * \note sbd calls this function
 745  */
 746 int
 747 cib_apply_patch_event(xmlNode *event, xmlNode *input, xmlNode **output,
     /*  */
 748                       int level)
 749 {
 750     int rc = pcmk_err_generic;
 751 
 752     xmlNode *diff = NULL;
 753 
 754     CRM_ASSERT(event);
 755     CRM_ASSERT(input);
 756     CRM_ASSERT(output);
 757 
 758     crm_element_value_int(event, F_CIB_RC, &rc);
 759     diff = get_message_xml(event, F_CIB_UPDATE_RESULT);
 760 
 761     if (rc < pcmk_ok || diff == NULL) {
 762         return rc;
 763     }
 764 
 765     if (level > LOG_CRIT) {
 766         xml_log_patchset(level, "Config update", diff);
 767     }
 768 
 769     if (input != NULL) {
 770         rc = cib_process_diff(NULL, cib_none, NULL, event, diff, input, output,
 771                               NULL);
 772 
 773         if (rc != pcmk_ok) {
 774             crm_debug("Update didn't apply: %s (%d) %p",
 775                       pcmk_strerror(rc), rc, *output);
 776 
 777             if (rc == -pcmk_err_old_data) {
 778                 crm_trace("Masking error, we already have the supplied update");
 779                 return pcmk_ok;
 780             }
 781             free_xml(*output);
 782             *output = NULL;
 783             return rc;
 784         }
 785     }
 786     return rc;
 787 }
/* */
root/lib/cib/cib_utils.c

DEFINITIONS
