root/include/crm/stonith-ng.h

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INCLUDED FROM


DEFINITIONS

This source file includes following definitions.
  1. stonith_api_kick_helper
  2. stonith_api_time_helper

   1 /*
   2  * Copyright 2004-2024 the Pacemaker project contributors
   3  *
   4  * The version control history for this file may have further details.
   5  *
   6  * This source code is licensed under the GNU Lesser General Public License
   7  * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
   8  */
   9 
  10 #ifndef PCMK__CRM_STONITH_NG__H
  11 #  define PCMK__CRM_STONITH_NG__H
  12 
  13 #ifdef __cplusplus
  14 extern "C" {
  15 #endif
  16 
  17 /**
  18  * \file
  19  * \brief Fencing aka. STONITH
  20  * \ingroup fencing
  21  */
  22 
  23 /* IMPORTANT: DLM source code includes this file directly, without having access
  24  * to other Pacemaker headers on its include path, so this file should *not*
  25  * include any other Pacemaker headers. (DLM might be updated to avoid the
  26  * issue, but we should still follow this guideline for a long time after.)
  27  */
  28 
  29 #  include <dlfcn.h>
  30 #  include <errno.h>
  31 #  include <stdbool.h>  // bool
  32 #  include <stdint.h>   // uint32_t
  33 #  include <time.h>     // time_t
  34 
  35 /* *INDENT-OFF* */
  36 enum stonith_state {
  37     stonith_connected_command,
  38     stonith_connected_query,
  39     stonith_disconnected,
  40 };
  41 
  42 enum stonith_call_options {
  43     st_opt_none            = 0x00000000,
  44     st_opt_verbose         = 0x00000001,
  45     st_opt_allow_suicide   = 0x00000002,
  46 
  47     st_opt_manual_ack      = 0x00000008,
  48     st_opt_discard_reply   = 0x00000010,
  49 /*    st_opt_all_replies     = 0x00000020, */
  50     st_opt_topology        = 0x00000040,
  51     st_opt_scope_local     = 0x00000100,
  52     st_opt_cs_nodeid       = 0x00000200,
  53     st_opt_sync_call       = 0x00001000,
  54     /*! Allow the timeout period for a callback to be adjusted
  55      *  based on the time the server reports the operation will take. */
  56     st_opt_timeout_updates = 0x00002000,
  57     /*! Only report back if operation is a success in callback */
  58     st_opt_report_only_success = 0x00004000,
  59     /* used where ever apropriate - e.g. cleanup of history */
  60     st_opt_cleanup         = 0x000080000,
  61     /* used where ever apropriate - e.g. send out a history query to all nodes */
  62     st_opt_broadcast       = 0x000100000,
  63 };
  64 
  65 /*! Order matters here, do not change values */
  66 enum op_state
  67 {
  68     st_query,
  69     st_exec,
  70     st_done,
  71     st_duplicate,
  72     st_failed,
  73 };
  74 
  75 // Supported fence agent interface standards
  76 enum stonith_namespace {
  77     st_namespace_invalid,
  78     st_namespace_any,
  79     st_namespace_internal,  // Implemented internally by Pacemaker
  80 
  81     /* Neither of these projects are active any longer, but the fence agent
  82      * interfaces they created are still in use and supported by Pacemaker.
  83      */
  84     st_namespace_rhcs,      // Red Hat Cluster Suite compatible
  85     st_namespace_lha,       // Linux-HA compatible
  86 };
  87 
  88 enum stonith_namespace stonith_text2namespace(const char *namespace_s);
  89 const char *stonith_namespace2text(enum stonith_namespace st_namespace);
  90 enum stonith_namespace stonith_get_namespace(const char *agent,
  91                                              const char *namespace_s);
  92 
  93 typedef struct stonith_key_value_s {
  94     char *key;
  95     char *value;
  96         struct stonith_key_value_s *next;
  97 } stonith_key_value_t;
  98 
  99 typedef struct stonith_history_s {
 100     char *target;
 101     char *action;
 102     char *origin;
 103     char *delegate;
 104     char *client;
 105     int state;
 106     time_t completed;
 107     struct stonith_history_s *next;
 108     long completed_nsec;
 109     char *exit_reason;
 110 } stonith_history_t;
 111 
 112 typedef struct stonith_s stonith_t;
 113 
 114 typedef struct stonith_event_s
 115 {
 116     char *id;
 117     char *type;     //!< \deprecated Will be removed in future release
 118     char *message;  //!< \deprecated Will be removed in future release
 119     char *operation;
 120 
 121     int result;
 122     char *origin;
 123     char *target;
 124     char *action;
 125     char *executioner;
 126 
 127     char *device;
 128 
 129     /*! The name of the client that initiated the action. */
 130     char *client_origin;
 131 
 132     //! \internal This field should be treated as internal to Pacemaker
 133     void *opaque;
 134 } stonith_event_t;
 135 
 136 typedef struct stonith_callback_data_s {
 137     int rc;
 138     int call_id;
 139     void *userdata;
 140 
 141     //! \internal This field should be treated as internal to Pacemaker
 142     void *opaque;
 143 } stonith_callback_data_t;
 144 
 145 typedef struct stonith_api_operations_s
 146 {
 147     /*!
 148      * \brief Destroy a fencer connection
 149      *
 150      * \param[in,out] st  Fencer connection to destroy
 151      */
 152     int (*free) (stonith_t *st);
 153 
 154     /*!
 155      * \brief Connect to the local fencer
 156      *
 157      * \param[in,out] st          Fencer connection to connect
 158      * \param[in]     name        Client name to use
 159      * \param[out]    stonith_fd  If NULL, use a main loop, otherwise
 160      *                            store IPC file descriptor here
 161      *
 162      * \return Legacy Pacemaker return code
 163      */
 164     int (*connect) (stonith_t *st, const char *name, int *stonith_fd);
 165 
 166     /*!
 167      * \brief Disconnect from the local stonith daemon.
 168      *
 169      * \param[in,out] st  Fencer connection to disconnect
 170      *
 171      * \return Legacy Pacemaker return code
 172      */
 173     int (*disconnect)(stonith_t *st);
 174 
 175     /*!
 176      * \brief Unregister a fence device with the local fencer
 177      *
 178      * \param[in,out] st       Fencer connection to disconnect
 179      * \param[in]     options  Group of enum stonith_call_options
 180      * \param[in]     name     ID of fence device to unregister
 181      *
 182      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 183      *         on success, otherwise a negative legacy Pacemaker return code
 184      */
 185     int (*remove_device)(stonith_t *st, int options, const char *name);
 186 
 187     /*!
 188      * \brief Register a fence device with the local fencer
 189      *
 190      * \param[in,out] st           Fencer connection to use
 191      * \param[in]     options      Group of enum stonith_call_options
 192      * \param[in]     id           ID of fence device to register
 193      * \param[in]     namespace_s  Type of fence agent to search for ("redhat"
 194      *                             or "stonith-ng" for RHCS-style, "internal"
 195      *                             for Pacemaker-internal devices, "heartbeat"
 196      *                             for LHA-style, or "any" or NULL for any)
 197      * \param[in]     agent        Name of fence agent for device
 198      * \param[in]     params       Fence agent parameters for device
 199      *
 200      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 201      *         on success, otherwise a negative legacy Pacemaker return code
 202      */
 203     int (*register_device)(stonith_t *st, int options, const char *id,
 204                            const char *namespace_s, const char *agent,
 205                            const stonith_key_value_t *params);
 206 
 207     /*!
 208      * \brief Unregister a fencing level for specified node with local fencer
 209      *
 210      * \param[in,out] st       Fencer connection to use
 211      * \param[in]     options  Group of enum stonith_call_options
 212      * \param[in]     node     Target node to unregister level for
 213      * \param[in]     level    Topology level number to unregister
 214      *
 215      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 216      *         on success, otherwise a negative legacy Pacemaker return code
 217      */
 218     int (*remove_level)(stonith_t *st, int options, const char *node,
 219                         int level);
 220 
 221     /*!
 222      * \brief Register a fencing level for specified node with local fencer
 223      *
 224      * \param[in,out] st           Fencer connection to use
 225      * \param[in]     options      Group of enum stonith_call_options
 226      * \param[in]     node         Target node to register level for
 227      * \param[in]     level        Topology level number to register
 228      * \param[in]     device_list  Devices to register in level
 229      *
 230      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 231      *         on success, otherwise a negative legacy Pacemaker return code
 232      */
 233     int (*register_level)(stonith_t *st, int options, const char *node,
 234                           int level, const stonith_key_value_t *device_list);
 235 
 236     /*!
 237      * \brief Retrieve a fence agent's metadata
 238      *
 239      * \param[in,out] stonith       Fencer connection
 240      * \param[in]     call_options  Group of enum stonith_call_options
 241      *                              (currently ignored)
 242      * \param[in]     agent         Fence agent to query
 243      * \param[in]     namespace_s   Type of fence agent to search for ("redhat"
 244      *                              or "stonith-ng" for RHCS-style, "internal"
 245      *                              for Pacemaker-internal devices, "heartbeat"
 246      *                              for LHA-style, or "any" or NULL for any)
 247      * \param[out]    output        Where to store metadata
 248      * \param[in]     timeout_sec   Error if not complete within this time
 249      *
 250      * \return Legacy Pacemaker return code
 251      * \note The caller is responsible for freeing *output using free().
 252      */
 253     int (*metadata)(stonith_t *stonith, int call_options, const char *agent,
 254                     const char *namespace_s, char **output, int timeout_sec);
 255 
 256     /*!
 257      * \brief Retrieve a list of installed fence agents
 258      *
 259      * \param[in,out] stonith       Fencer connection to use
 260      * \param[in]     call_options  Group of enum stonith_call_options
 261      *                              (currently ignored)
 262      * \param[in]     namespace_s   Type of fence agents to list ("redhat"
 263      *                              or "stonith-ng" for RHCS-style, "internal" for
 264      *                              Pacemaker-internal devices, "heartbeat" for
 265      *                              LHA-style, or "any" or NULL for all)
 266      * \param[out]    devices       Where to store agent list
 267      * \param[in]     timeout       Error if unable to complete within this
 268      *                              (currently ignored)
 269      *
 270      * \return Number of items in list on success, or negative errno otherwise
 271      * \note The caller is responsible for freeing the returned list with
 272      *       stonith_key_value_freeall().
 273      */
 274     int (*list_agents)(stonith_t *stonith, int call_options,
 275                        const char *namespace_s, stonith_key_value_t **devices,
 276                        int timeout);
 277 
 278     /*!
 279      * \brief Get the output of a fence device's list action
 280      *
 281      * \param[in,out] stonith       Fencer connection to use
 282      * \param[in]     call_options  Group of enum stonith_call_options
 283      * \param[in]     id            Fence device ID to run list for
 284      * \param[out]    list_info     Where to store list output
 285      * \param[in]     timeout       Error if unable to complete within this
 286      *
 287      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 288      *         on success, otherwise a negative legacy Pacemaker return code
 289      */
 290     int (*list)(stonith_t *stonith, int call_options, const char *id,
 291                 char **list_info, int timeout);
 292 
 293     /*!
 294      * \brief Check whether a fence device is reachable by monitor action
 295      *
 296      * \param[in,out] stonith       Fencer connection to use
 297      * \param[in]     call_options  Group of enum stonith_call_options
 298      * \param[in]     id            Fence device ID to run monitor for
 299      * \param[in]     timeout       Error if unable to complete within this
 300      *
 301      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 302      *         on success, otherwise a negative legacy Pacemaker return code
 303      */
 304     int (*monitor)(stonith_t *stonith, int call_options, const char *id,
 305                    int timeout);
 306 
 307     /*!
 308      * \brief Check whether a fence device target is reachable by status action
 309      *
 310      * \param[in,out] stonith       Fencer connection to use
 311      * \param[in]     call_options  Group of enum stonith_call_options
 312      * \param[in]     id            Fence device ID to run status for
 313      * \param[in]     port          Fence target to run status for
 314      * \param[in]     timeout       Error if unable to complete within this
 315      *
 316      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 317      *         on success, otherwise a negative legacy Pacemaker return code
 318      */
 319     int (*status)(stonith_t *stonith, int call_options, const char *id,
 320                   const char *port, int timeout);
 321 
 322     /*!
 323      * \brief List registered fence devices
 324      *
 325      * \param[in,out] stonith       Fencer connection to use
 326      * \param[in]     call_options  Group of enum stonith_call_options
 327      * \param[in]     target        Fence target to run status for
 328      * \param[out]    devices       Where to store list of fence devices
 329      * \param[in]     timeout       Error if unable to complete within this
 330      *
 331      * \note If node is provided, only devices that can fence the node id
 332      *       will be returned.
 333      *
 334      * \return Number of items in list on success, or negative errno otherwise
 335      */
 336     int (*query)(stonith_t *stonith, int call_options, const char *target,
 337                  stonith_key_value_t **devices, int timeout);
 338 
 339     /*!
 340      * \brief Request that a target get fenced
 341      *
 342      * \param[in,out] stonith       Fencer connection to use
 343      * \param[in]     call_options  Group of enum stonith_call_options
 344      * \param[in]     node          Fence target
 345      * \param[in]     action        "on", "off", or "reboot"
 346      * \param[in]     timeout       Default per-device timeout to use with
 347      *                              each executed device
 348      * \param[in]     tolerance     Accept result of identical fence action
 349      *                              completed within this time
 350      *
 351      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 352      *         on success, otherwise a negative legacy Pacemaker return code
 353      */
 354     int (*fence)(stonith_t *stonith, int call_options, const char *node,
 355                  const char *action, int timeout, int tolerance);
 356 
 357     /*!
 358      * \brief Manually confirm that a node has been fenced
 359      *
 360      * \param[in,out] stonith       Fencer connection to use
 361      * \param[in]     call_options  Group of enum stonith_call_options
 362      * \param[in]     target        Fence target
 363      *
 364      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 365      *         on success, otherwise a negative legacy Pacemaker return code
 366      */
 367     int (*confirm)(stonith_t *stonith, int call_options, const char *target);
 368 
 369     /*!
 370      * \brief List fencing actions that have occurred for a target
 371      *
 372      * \param[in,out] stonith       Fencer connection to use
 373      * \param[in]     call_options  Group of enum stonith_call_options
 374      * \param[in]     node          Fence target
 375      * \param[out]    history       Where to store list of fencing actions
 376      * \param[in]     timeout       Error if unable to complete within this
 377      *
 378      * \return Legacy Pacemaker return code
 379      */
 380     int (*history)(stonith_t *stonith, int call_options, const char *node,
 381                    stonith_history_t **history, int timeout);
 382 
 383     /*!
 384      * \brief Register a callback for fence notifications
 385      *
 386      * \param[in,out] stonith       Fencer connection to use
 387      * \param[in]     event         Event to register for
 388      * \param[in]     callback      Callback to register
 389      *
 390      * \return Legacy Pacemaker return code
 391      */
 392     int (*register_notification)(stonith_t *stonith, const char *event,
 393                                  void (*callback)(stonith_t *st,
 394                                                   stonith_event_t *e));
 395 
 396     /*!
 397      * \brief Unregister callbacks for fence notifications
 398      *
 399      * \param[in,out] stonith  Fencer connection to use
 400      * \param[in]     event    Event to unregister callbacks for (NULL for all)
 401      *
 402      * \return Legacy Pacemaker return code
 403      */
 404     int (*remove_notification)(stonith_t *stonith, const char *event);
 405 
 406     /*!
 407      * \brief Register a callback for an asynchronous fencing result
 408      *
 409      * \param[in,out] stonith        Fencer connection to use
 410      * \param[in]     call_id        Call ID to register callback for
 411      * \param[in]     timeout        Error if result not received in this time
 412      * \param[in]     options        Group of enum stonith_call_options
 413      *                               (respects \c st_opt_timeout_updates and
 414      *                               \c st_opt_report_only_success)
 415      * \param[in,out] user_data      Pointer to pass to callback
 416      * \param[in]     callback_name  Unique identifier for callback
 417      * \param[in]     callback       Callback to register (may be called
 418      *                               immediately if \p call_id indicates error)
 419      *
 420      * \return \c TRUE on success, \c FALSE if call_id indicates error,
 421      *         or -EINVAL if \p stonith is not valid
 422      */
 423     int (*register_callback)(stonith_t *stonith, int call_id, int timeout,
 424                              int options, void *user_data,
 425                              const char *callback_name,
 426                              void (*callback)(stonith_t *st,
 427                                               stonith_callback_data_t *data));
 428 
 429     /*!
 430      * \brief Unregister callbacks for asynchronous fencing results
 431      *
 432      * \param[in,out] stonith        Fencer connection to use
 433      * \param[in]     call_id        If \p all_callbacks is false, call ID
 434      *                               to unregister callback for
 435      * \param[in]     all_callbacks  If true, unregister all callbacks
 436      *
 437      * \return pcmk_ok
 438      */
 439     int (*remove_callback)(stonith_t *stonith, int call_id, bool all_callbacks);
 440 
 441     /*!
 442      * \brief Unregister fencing level for specified node, pattern or attribute
 443      *
 444      * \param[in,out] st       Fencer connection to use
 445      * \param[in]     options  Group of enum stonith_call_options
 446      * \param[in]     node     If not NULL, unregister level targeting this node
 447      * \param[in]     pattern  If not NULL, unregister level targeting nodes
 448      *                         whose names match this regular expression
 449      * \param[in]     attr     If this and \p value are not NULL, unregister
 450      *                         level targeting nodes with this node attribute
 451      *                         set to \p value
 452      * \param[in]     value    If this and \p attr are not NULL, unregister
 453      *                         level targeting nodes with node attribute \p attr
 454      *                         set to this
 455      * \param[in]     level    Topology level number to remove
 456      *
 457      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 458      *         on success, otherwise a negative legacy Pacemaker return code
 459      * \note The caller should set only one of \p node, \p pattern, or \p attr
 460      *       and \p value.
 461      */
 462     int (*remove_level_full)(stonith_t *st, int options,
 463                              const char *node, const char *pattern,
 464                              const char *attr, const char *value, int level);
 465 
 466     /*!
 467      * \brief Register fencing level for specified node, pattern or attribute
 468      *
 469      * \param[in,out] st           Fencer connection to use
 470      * \param[in]     options      Group of enum stonith_call_options
 471      * \param[in]     node         If not NULL, register level targeting this
 472      *                             node by name
 473      * \param[in]     pattern      If not NULL, register level targeting nodes
 474      *                             whose names match this regular expression
 475      * \param[in]     attr         If this and \p value are not NULL, register
 476      *                             level targeting nodes with this node
 477      *                             attribute set to \p value
 478      * \param[in]     value        If this and \p attr are not NULL, register
 479      *                             level targeting nodes with node attribute
 480      *                             \p attr set to this
 481      * \param[in]     level        Topology level number to remove
 482      * \param[in]     device_list  Devices to use in level
 483      *
 484      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 485      *         on success, otherwise a negative legacy Pacemaker return code
 486      *
 487      * \note The caller should set only one of node, pattern or attr/value.
 488      */
 489     int (*register_level_full)(stonith_t *st, int options,
 490                                const char *node, const char *pattern,
 491                                const char *attr, const char *value, int level,
 492                                const stonith_key_value_t *device_list);
 493 
 494     /*!
 495      * \brief Validate an arbitrary stonith device configuration
 496      *
 497      * \param[in,out] st            Fencer connection to use
 498      * \param[in]     call_options  Group of enum stonith_call_options
 499      * \param[in]     rsc_id        ID used to replace CIB secrets in \p params
 500      * \param[in]     namespace_s   Type of fence agent to validate ("redhat"
 501      *                              or "stonith-ng" for RHCS-style, "internal"
 502      *                              for Pacemaker-internal devices, "heartbeat"
 503      *                              for LHA-style, or "any" or NULL for any)
 504      * \param[in]     agent         Fence agent to validate
 505      * \param[in]     params        Configuration parameters to pass to agent
 506      * \param[in]     timeout       Fail if no response within this many seconds
 507      * \param[out]    output        If non-NULL, where to store any agent output
 508      * \param[out]    error_output  If non-NULL, where to store agent error output
 509      *
 510      * \return pcmk_ok if validation succeeds, -errno otherwise
 511      * \note If pcmk_ok is returned, the caller is responsible for freeing
 512      *       the output (if requested) with free().
 513      */
 514     int (*validate)(stonith_t *st, int call_options, const char *rsc_id,
 515                     const char *namespace_s, const char *agent,
 516                     const stonith_key_value_t *params, int timeout,
 517                     char **output, char **error_output);
 518 
 519     /*!
 520      * \brief Request delayed fencing of a target
 521      *
 522      * \param[in,out] stonith       Fencer connection to use
 523      * \param[in]     call_options  Group of enum stonith_call_options
 524      * \param[in]     node          Fence target
 525      * \param[in]     action        "on", "off", or "reboot"
 526      * \param[in]     timeout       Default per-device timeout to use with
 527      *                              each executed device
 528      * \param[in]     tolerance     Accept result of identical fence action
 529      *                              completed within this time
 530      * \param[in]     delay         Execute fencing after this delay (-1
 531      *                              disables any delay from pcmk_delay_base
 532      *                              and pcmk_delay_max)
 533      *
 534      * \return pcmk_ok (if synchronous) or positive call ID (if asynchronous)
 535      *         on success, otherwise a negative legacy Pacemaker return code
 536      */
 537     int (*fence_with_delay)(stonith_t *stonith, int call_options,
 538                             const char *node, const char *action, int timeout,
 539                             int tolerance, int delay);
 540 
 541 } stonith_api_operations_t;
 542 
 543 struct stonith_s
 544 {
 545     enum stonith_state state;
 546 
 547     int call_id;
 548     int call_timeout;   //!< \deprecated Unused
 549     void *st_private;
 550 
 551     stonith_api_operations_t *cmds;
 552 };
 553 /* *INDENT-ON* */
 554 
 555 /* Core functions */
 556 stonith_t *stonith_api_new(void);
 557 void stonith_api_delete(stonith_t * st);
 558 
 559 void stonith_dump_pending_callbacks(stonith_t * st);
 560 
 561 bool stonith_dispatch(stonith_t * st);
 562 
 563 stonith_key_value_t *stonith_key_value_add(stonith_key_value_t * kvp, const char *key,
 564                                            const char *value);
 565 void stonith_key_value_freeall(stonith_key_value_t * kvp, int keys, int values);
 566 
 567 void stonith_history_free(stonith_history_t *history);
 568 
 569 // Convenience functions
 570 int stonith_api_connect_retry(stonith_t *st, const char *name,
 571                               int max_attempts);
 572 const char *stonith_op_state_str(enum op_state state);
 573 
 574 /* Basic helpers that allows nodes to be fenced and the history to be
 575  * queried without mainloop or the caller understanding the full API
 576  *
 577  * At least one of nodeid and uname are required
 578  *
 579  * NOTE: DLM uses both of these
 580  */
 581 int stonith_api_kick(uint32_t nodeid, const char *uname, int timeout, bool off);
 582 time_t stonith_api_time(uint32_t nodeid, const char *uname, bool in_progress);
 583 
 584 /*
 585  * Helpers for using the above functions without install-time dependencies
 586  *
 587  * Usage:
 588  *  #include <crm/stonith-ng.h>
 589  *
 590  * To turn a node off by corosync nodeid:
 591  *  stonith_api_kick_helper(nodeid, 120, 1);
 592  *
 593  * To check the last fence date/time (also by nodeid):
 594  *  last = stonith_api_time_helper(nodeid, 0);
 595  *
 596  * To check if fencing is in progress:
 597  *  if(stonith_api_time_helper(nodeid, 1) > 0) { ... }
 598  *
 599  * eg.
 600 
 601  #include <stdio.h>
 602  #include <time.h>
 603  #include <crm/stonith-ng.h>
 604  int
 605  main(int argc, char ** argv)
 606  {
 607      int rc = 0;
 608      int nodeid = 102;
 609 
 610      rc = stonith_api_time_helper(nodeid, 0);
 611      printf("%d last fenced at %s\n", nodeid, ctime(rc));
 612 
 613      rc = stonith_api_kick_helper(nodeid, 120, 1);
 614      printf("%d fence result: %d\n", nodeid, rc);
 615 
 616      rc = stonith_api_time_helper(nodeid, 0);
 617      printf("%d last fenced at %s\n", nodeid, ctime(rc));
 618 
 619      return 0;
 620  }
 621 
 622  */
 623 
 624 #  define STONITH_LIBRARY "libstonithd.so.26"
 625 
 626 typedef int (*st_api_kick_fn) (int nodeid, const char *uname, int timeout, bool off);
 627 typedef time_t (*st_api_time_fn) (int nodeid, const char *uname, bool in_progress);
 628 
 629 static inline int
 630 stonith_api_kick_helper(uint32_t nodeid, int timeout, bool off)
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 631 {
 632     static void *st_library = NULL;
 633     static st_api_kick_fn st_kick_fn;
 634 
 635     if (st_library == NULL) {
 636         st_library = dlopen(STONITH_LIBRARY, RTLD_LAZY);
 637     }
 638     if (st_library && st_kick_fn == NULL) {
 639         st_kick_fn = (st_api_kick_fn) dlsym(st_library, "stonith_api_kick");
 640     }
 641     if (st_kick_fn == NULL) {
 642 #ifdef ELIBACC
 643         return -ELIBACC;
 644 #else
 645         return -ENOSYS;
 646 #endif
 647     }
 648 
 649     return (*st_kick_fn) (nodeid, NULL, timeout, off);
 650 }
 651 
 652 static inline time_t
 653 stonith_api_time_helper(uint32_t nodeid, bool in_progress)
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 654 {
 655     static void *st_library = NULL;
 656     static st_api_time_fn st_time_fn;
 657 
 658     if (st_library == NULL) {
 659         st_library = dlopen(STONITH_LIBRARY, RTLD_LAZY);
 660     }
 661     if (st_library && st_time_fn == NULL) {
 662         st_time_fn = (st_api_time_fn) dlsym(st_library, "stonith_api_time");
 663     }
 664     if (st_time_fn == NULL) {
 665         return 0;
 666     }
 667 
 668     return (*st_time_fn) (nodeid, NULL, in_progress);
 669 }
 670 
 671 /**
 672  * Does the given agent describe a stonith resource that can exist?
 673  *
 674  * \param[in] agent     What is the name of the agent?
 675  * \param[in] timeout   Timeout to use when querying.  If 0 is given,
 676  *                      use a default of 120.
 677  *
 678  * \return A boolean
 679  */
 680 bool stonith_agent_exists(const char *agent, int timeout);
 681 
 682 /*!
 683  * \brief Turn fence action into a more readable string
 684  *
 685  * \param[in] action  Fence action
 686  */
 687 const char *stonith_action_str(const char *action);
 688 
 689 #if !defined(PCMK_ALLOW_DEPRECATED) || (PCMK_ALLOW_DEPRECATED == 1)
 690 /* Normally we'd put this section in a separate file (crm/fencing/compat.h), but
 691  * we can't do that for the reason noted at the top of this file. That does mean
 692  * we have to duplicate these declarations where they're implemented.
 693  */
 694 
 695 //! \deprecated Do not use
 696 #define T_STONITH_NOTIFY_DISCONNECT "st_notify_disconnect"
 697 
 698 //! \deprecated Do not use
 699 #define T_STONITH_NOTIFY_FENCE "st_notify_fence"
 700 
 701 //! \deprecated Do not use
 702 #define T_STONITH_NOTIFY_HISTORY "st_notify_history"
 703 
 704 //! \deprecated Do not use
 705 #define T_STONITH_NOTIFY_HISTORY_SYNCED "st_notify_history_synced"
 706 
 707 //! \deprecated Use stonith_get_namespace() instead
 708 const char *get_stonith_provider(const char *agent, const char *provider);
 709 
 710 #endif
 711 
 712 #ifdef __cplusplus
 713 }
 714 #endif
 715 
 716 #endif

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