usr/src/common/svc/repcache_protocol.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2016 by Delphix. All rights reserved.
  25  */
  26
  27 #ifndef _REPCACHE_PROTOCOL_H
  28 #define _REPCACHE_PROTOCOL_H
  29
  30 /*
  31  * The Repository Cache Protocol
  32  * -----------------------------
  33  *
  34  * 1. Introduction
  35  * ---------------
  36  * This header file defines the private protocols between libscf(3lib) and
  37  * svc.configd(1m).  There are two separate protocols:
  38  *
  39  * 1.   The 'global' protocol, accessible via an fattach(3C)ed door located
  40  *      at REPOSITORY_DOOR_NAME.
  41  *
  42  * 2.   The 'client' protocol, accessible through a door created using the
  43  *      global protocol, which allows access to the repository.
  44  *
  45  * 1.1 Design restrictions
  46  * -----------------------
  47  * A basic constraint of the door IPC mechanism is that there is no reliable
  48  * delivery.  In particular:
  49  *
  50  * 1.   If libscf(3lib) recieves an EINTR from door_call(), it doesn't know
  51  *      whether or not the server recieved (and is processing) its request.
  52  *
  53  * 2.   When svc.configd(1M) calls door_return(), the client may have already
  54  *      received an EINTR, aborting its door_call().  In this case, the
  55  *      returned values are dropped on the floor.
  56  *
  57  * The practical upshot of all of this is simple:
  58  *
  59  *      Every individual protocol action must be idempotent.
  60  *
  61  * That is, a client must be able to retry any single request multiple times,
  62  * and get the correct results.
  63  *
  64  * 1.2. Protocol shorthand
  65  * -----------------------
  66  * We represent by "REQUEST(arg1, arg2) -> result, res1, [desc]" a request code
  67  * of REP_PROTOCOL_REQUEST (or REPOSITORY_DOOR_REQUEST), which takes two
  68  * additional arguments, arg1 and arg2, and returns a result code, res1, and
  69  * a file descriptor desc.
  70  *
  71  * If an error occurs, the server will usually only send the result code. (a
  72  * short return)
  73  *
  74  * Inside the protocol destription, <foo> indicates the type foo indicates.
  75  *
  76  * 2. The Global protocol
  77  * ----------------------
  78  * Everything starting with "REPOSITORY_DOOR" or "repository_door" belongs
  79  * to the global protocol.
  80  *
  81  * 2.1. Global requests
  82  * --------------------
  83  *
  84  * REQUEST_CONNECT(rdr_flags, ...) -> result, [new_door]
  85  *      Request a new Client door.  rdr_flags determines attributes of the
  86  *      connection:
  87  *
  88  *          FLAG_DEBUG
  89  *              Sets connection debugging flags to those in rdr_debug.
  90  *
  91  *      The new door is returned with DOOR_RELEASE set, so if the client does
  92  *      not recieve the response, the new door will recieve an unref
  93  *      notification.  This makes this request idempotent.
  94  *
  95  * 2.2. Global reponse codes
  96  * -------------------------
  97  * GLXXX: This needs to be thought through.
  98  *
  99  * SUCCESS
 100  * FAIL_BAD_REQUEST
 101  * FAIL_VERSION_MISMATCH
 102  * FAIL_BAD_FLAG
 103  * FAIL_BAD_USER
 104  * FAIL_NO_RESOURCES
 105  *
 106  * 3. The Client protocol
 107  * ----------------------
 108  * Everything starting with "REP_PROTOCOL" or "rep_protocol" belongs to the
 109  * client protocol.
 110  *
 111  * 3.1. Techniques used
 112  * --------------------
 113  * 3.1.1. Client-controlled identifiers
 114  *
 115  * An idiom the protocol uses to lower the number of round trips is
 116  * client-controlled identifiers.  The basic idea is this:  whenever a
 117  * client wants to set up and use a piece of server state, it picks an
 118  * integer *which it knows is not in use* to identify it.  The server then
 119  * maintains per-client, per-resource id->resource maps.  This has a number
 120  * of advantages:
 121  *
 122  * 1.   Since the client allocates the identifiers, we don't need to do
 123  *      a round-trip just to allocate a number.
 124  *
 125  * 2.   Since it is the client's job to make sure identifiers don't collide,
 126  *      idempotency for setup (destroy) are simple:  If the identifier
 127  *      already exists (does not exist), we just return success.
 128  *
 129  * 3.   Since the identifiers are per-client, the design automatically
 130  *      precludes clients being able to manipulate other client's state.
 131  *
 132  * 3.1.2 Sequence numbers
 133  *
 134  * A standard way of gaining idempotency is introducing sequence numbers.
 135  * These are simply integers which get incremented at points in the protocol,
 136  * and make sure the client and server are in sync.
 137  *
 138  * In this protocol, we use sequence numbers for requests (like ITER_READ)
 139  * which are repeated, returning different data each time.  Since requests
 140  * can also be repeated due to unreliable dispatch, the client increments
 141  * the sequence number after every successful request.  This allows the server
 142  * to differentiate the two cases. (note that this means that failing
 143  * requests have no side effects and are repeatable)
 144  *
 145  * 3.2. Client abstractions
 146  * ------------------------
 147  * 3.2.1 Entities
 148  *
 149  * An "entity" is a typed register which the client can manipulate.
 150  * Entities are named in the protocol by client-controlled identifiers.
 151  * They have a fixed type for their entire lifetime, and may be in one
 152  * of two states:
 153  *
 154  * valid
 155  *      The entity has a valid value, and may be read from.  This state
 156  *      is reached by a successful write to the entity by some protocol
 157  *      step.
 158  *
 159  * invalid
 160  *      The entity does not contain a valid value.  There are a number
 161  *      of ways to reach this state:
 162  *
 163  *      1.  The entity was just created.
 164  *      2.  The underlying object that this entity refers to was destroyed.
 165  *      3.  A protocol request which would have modified this entity
 166  *          failed.
 167  *
 168  * An entity is an element in the tree of repository data.  Every entity
 169  * (except for the most distant SCOPE) has exactly one parent.  Entities
 170  * can have multiple children of different types, restricted by its base
 171  * type.
 172  *
 173  * The ENTITY_GET call is used to get the root of the tree (the most local
 174  * scope)
 175  *
 176  * 3.2.2. The entity tree
 177  * ----------------------
 178  * The structure of a scope is as follows:
 179  *
 180  *       _______
 181  *      | SCOPE |
 182  *      |_______|
 183  *          \ .
 184  *           \ .
 185  *            \_________
 186  *            | SERVICE |
 187  *            |_________|
 188  *              /.    \ .
 189  *             /.      \ .
 190  *        ____/         \__________
 191  *       | PG |         | INSTANCE |
 192  *       |____|         |__________|
 193  *                        /.     \ .
 194  *                       /.       \ .
 195  *                  ____/          \__________
 196  *                 | PG |          | SNAPSHOT |
 197  *                 |____|          |__________|
 198  *                                      \ .
 199  *                                       \ .
 200  *                                        \___________
 201  *                                        | SNAPLEVEL |
 202  *                                        |___________|
 203  *                                           /.
 204  *                                          /.
 205  *                                     ____/
 206  *                                    | PG |
 207  *                                    |____|
 208  *
 209  * Where the dots indicate an arbitrary number (including 0) of children.
 210  *
 211  * For a given scope, the next scope (in the sense of distance) is its
 212  * TYPE_SCOPE parent.  The furthest out scope has no parent.
 213  *
 214  * 3.2.2 Iterators
 215  *
 216  * GLXXX
 217  *
 218  * 3.3. Client requests
 219  * --------------------
 220  *
 221  * CLOSE() -> result
 222  *      Closes the connection, revoking the door.  After this call completes,
 223  *      no further calls will succeed.
 224  *
 225  * ENTITY_SETUP(entity_id, type) -> result
 226  *      Sets up an entity, identified by entity_id, to identify a single
 227  *      <type>.  <type> may not be TYPE_NONE.
 228  *
 229  * ENTITY_NAME(entity_id, name_type) -> result, name
 230  *      Returns the name of entity_id.  name_type determines which type of
 231  *      name to get.
 232  *
 233  * ENTITY_PARENT_TYPE(entity_id) -> result, parent_type
 234  *      Retrieves the type of entity_id's parent
 235  *
 236  * ENTITY_GET_CHILD(entity_id, child_id, name) -> result
 237  *      Puts entity_id's child (of child_id's type) named 'name' into child_id.
 238  *
 239  * ENTITY_GET_PARENT(entity_id, out_id) -> result
 240  *      Puts entity_id's parent into out_id.
 241  *
 242  * ENTITY_GET(entity_id, number) -> result
 243  *      Makes entity_id point to a particular object.  If any error
 244  *      occurs, dest_id will be invalid.
 245  *
 246  * ENTITY_UPDATE(entity_id, changeid) -> result
 247  *      Updates the entity to pick up any new changes.
 248  *
 249  * ENTITY_CREATE_CHILD(entity_id, type, name, child_id, changeid) -> result
 250  *      Attaches the object of type /type/ in child_id as the child of
 251  *      entity_id named 'name'.
 252  *
 253  * ENTITY_CREATE_PG(entity_id, name, type, flags, child_id, changeid) -> result
 254  *      Creates a property group child of entity_id named 'name', type 'type'
 255  *      and flags 'flags', and puts the resulting object in child_id.
 256  *
 257  * ENTITY_DELETE(entity_id, changeid) -> result
 258  *      Deletes the entity represented by entity_id.
 259  *
 260  * ENTITY_RESET(entity_id) -> result
 261  *      Resets the entity.
 262  *
 263  * ENTITY_TEARDOWN(entity_id) -> result
 264  *      Destroys the entity entity_id.
 265  *
 266  * ITER_SETUP(iter_id) -> result
 267  *      Sets up an iterator id.
 268  *
 269  * ITER_START(iter_id, entity_id, itertype, flags, pattern) -> result
 270  *      Sets up an iterator, identified by iter_id, which will iterate the
 271  *      <itertype> children of entity_id whose names match 'pattern',
 272  *      with the matching controlled by flags.  Initializing an iterator
 273  *      counts as the first sequence number (1).
 274  *
 275  * ITER_READ(iter_id, sequence, entity_id) -> result
 276  *      Retrieves the next element of iterator iter_id.  Sequence starts at 2,
 277  *      and is incremented by the client after each successful iteration.
 278  *      The result is written to entity_id, which must be of the same type
 279  *      as the iterator result.  The iterator must not be iterating values.
 280  *
 281  * ITER_READ_VALUE(iter_id, sequence) -> result, type, value
 282  *      Retrieves the next value for iterator iter_id.  Sequence starts at 2,
 283  *      and is incremented by the client after each successful iteration.
 284  *      The iterator must be iterating a property's values.
 285  *
 286  * ITER_RESET(iter_id) -> result
 287  *      Throws away any accumulated state.
 288  *
 289  * ITER_TEARDOWN(iter_id) -> result
 290  *      Destroys the iterator iter_id.
 291  *
 292  * NEXT_SNAPLEVEL(entity_src, entity_dst) -> result
 293  *      If entity_src is a snapshot, set entity_dst to the first snaplevel
 294  *      in it.  If entity_src is a snaplevel, set entity_dst to the next
 295  *      snaplevel, or fail if there isn't one.
 296  *
 297  * SNAPSHOT_TAKE(entity_id, name, dest_id, flags) -> result
 298  *      Takes a snapshot of entity_id, creating snaplevels for the instance and
 299  *      its parent service.  If flags is REP_SNAPSHOT_NEW, a new snapshot named
 300  *      'name' is created as a child of entity_id, dest_id is pointed to it,
 301  *      and the new snaplevels are attached to it.  If flags is
 302  *      REP_SNAPSHOT_ATTACH, name must be empty, and the new snaplevels are
 303  *      attached to the snapshot dest_id points to.
 304  *
 305  * SNAPSHOT_TAKE_NAMED(entity_id, instname, svcname, name, dest_id) -> result
 306  *      Like SNAPSHOT_TAKE, but always acts as if REP_SNAPSHOT_NEW is
 307  *      specified, and instname and svcname override the actual service and
 308  *      instance names, respectively, written into the snaplevels.
 309  *
 310  *      Note that this is only useful for writing snapshots which will later
 311  *      be transferred to another instance (svc:/svcname:instname/)
 312  *
 313  * SNAPSHOT_ATTACH(source_id, dest_id) -> result
 314  *      The snaplevels attached to the snapshot referenced by source_id are
 315  *      attached to the snapshot dest_id is pointed at.
 316  *
 317  * PROPERTY_GET_TYPE(entity_id) -> result, value type
 318  *      Finds the value type of entity_id, which must be a property.
 319  *
 320  * PROPERTY_GET_VALUE(entity_id) -> result, type, value
 321  *      If the property contains a single value, returns it and its type.
 322  *
 323  * PROPERTYGRP_SETUP_WAIT(entity_id) -> result, [pipe fd]
 324  *      Sets up a notification for changes to the object entity_id currently
 325  *      references.  On success, returns one side of a pipe -- when there
 326  *      has been a change (or the daemon dies), the other end of the pipe will
 327  *      be closed.
 328  *
 329  *      Only one of these can be set up per client -- attempts to set up more
 330  *      than one will cause the previous one to get closed.
 331  *
 332  * PROPERTYGRP_TX_START(entity_id_tx, entity_id) -> result
 333  *      Makes entity_id_tx point to the same property group as entity_id,
 334  *      then attempts to set up entity_id_tx as a transaction on that group.
 335  *      entity_id and entity_id_tx must be distinct.  On failure, entity_id_tx
 336  *      is reset.
 337  *
 338  * PROPERTYGRP_TX_COMMIT(entity_id, data) -> result
 339  *      Gives the actual steps to follow, and attempts to commit them.
 340  *
 341  * CLIENT_ADD_NOTIFY(type, pattern) -> result
 342  *      Adds a new property group name or type pattern to the notify list
 343  *      (see CLIENT_WAIT).  If successful, takes effect immediately.
 344  *
 345  * CLIENT_WAIT(entity_id) -> result, fmri
 346  *      Waits for a change to a propertygroup that matches the patterns
 347  *      set up using CLIENT_ADD_NOTIFY, and puts the resultant propertygroup
 348  *      in entity_id.  Note that if an error occurs, you can loose
 349  *      notifications.  Either entity_id is set to a changed propertygroup,
 350  *      or fmri is a non-zero-length string identifying a deleted thing.
 351  *
 352  * BACKUP(name) -> result
 353  *      Backs up the persistant repository with a particular name.
 354  *
 355  * SET_ANNOTATION(operation, file)
 356  *      Set up a security audit annotation event.  operation is the name of
 357  *      the operation that is being annotated, and file is the file being
 358  *      processed.  This will be used to mark operations which comprise
 359  *      multiple primitive operations such as svccfg import.
 360  *
 361  * SWITCH(flag) -> result
 362  *      The flag is used to indicate the direction of the switch operation.
 363  *      When the flag is set to 'fast', move the main repository from the
 364  *      default location (/etc/svc) to the tmpfs locationa (/etc/svc/volatile).
 365  *      When it is set to 'perm', the switch is reversed.
 366  */
 367
 368 #include <door.h>
 369 #include <stddef.h>
 370 #include <sys/sysmacros.h>
 371
 372 #ifdef  __cplusplus
 373 extern "C" {
 374 #endif
 375
 376 /*
 377  * svc.configd initial protocol details
 378  */
 379 #define REPOSITORY_DOOR_BASEVER (('R' << 24) | ('e' << 16) | ('p' << 8))
 380 #define REPOSITORY_DOOR_NAME    "/etc/svc/volatile/repository_door"
 381 #define REPOSITORY_DOOR_COOKIE  ((void *)REPOSITORY_DOOR_BASEVER)
 382
 383 #define REPOSITORY_BOOT_BACKUP  ((const char *)"boot")
 384
 385 /*
 386  * This value should be incremented any time the protocol changes.  When in
 387  * doubt, bump it.
 388  */
 389 #define REPOSITORY_DOOR_VERSION                 (21 + REPOSITORY_DOOR_BASEVER)
 390
 391 /*
 392  * flags for rdr_flags
 393  */
 394 #define REPOSITORY_DOOR_FLAG_DEBUG              0x00000001      /* rdr_debug */
 395
 396 #define REPOSITORY_DOOR_FLAG_ALL                0x00000001      /* all flags */
 397
 398 /*
 399  * Request IDs
 400  */
 401 enum repository_door_requestid {
 402         REPOSITORY_DOOR_REQUEST_CONNECT = (('M' << 8) | 1)
 403 };
 404
 405 enum repository_door_statusid {
 406         REPOSITORY_DOOR_SUCCESS                 = 0,
 407         REPOSITORY_DOOR_FAIL_BAD_REQUEST        = 1,
 408         REPOSITORY_DOOR_FAIL_VERSION_MISMATCH   = 2,
 409         REPOSITORY_DOOR_FAIL_BAD_FLAG           = 3,
 410         REPOSITORY_DOOR_FAIL_NO_RESOURCES       = 4,
 411         REPOSITORY_DOOR_FAIL_PERMISSION_DENIED  = 5
 412 };
 413
 414 /*
 415  * You may only add elements to the end of this structure.
 416  */
 417 typedef struct repository_door_request {
 418         uint32_t rdr_version;                   /* must be first element */
 419         enum repository_door_requestid rdr_request;
 420         uint32_t rdr_flags;
 421         uint32_t rdr_debug;
 422 } repository_door_request_t;
 423
 424 typedef struct repository_door_response {
 425         enum repository_door_statusid rdr_status;
 426 } repository_door_response_t;
 427
 428 /*
 429  * Client interface.  Used on doors returned by REQUEST_CONNECT
 430  */
 431
 432 #define REP_PROTOCOL_NAME_LEN           120     /* maximum name length */
 433 #define REP_PROTOCOL_VALUE_LEN          4096    /* maximum value length */
 434
 435 #define REP_PROTOCOL_FMRI_LEN           (6 * REP_PROTOCOL_NAME_LEN)
 436
 437 #define REP_PROTOCOL_BASE               ('C' << 8)
 438
 439 /*
 440  * Request codes
 441  */
 442 enum rep_protocol_requestid {
 443         REP_PROTOCOL_CLOSE              = REP_PROTOCOL_BASE,
 444
 445         REP_PROTOCOL_ENTITY_SETUP,
 446         REP_PROTOCOL_ENTITY_NAME,
 447         REP_PROTOCOL_ENTITY_PARENT_TYPE,
 448         REP_PROTOCOL_ENTITY_GET_CHILD,
 449         REP_PROTOCOL_ENTITY_GET_PARENT,
 450         REP_PROTOCOL_ENTITY_GET,
 451         REP_PROTOCOL_ENTITY_UPDATE,
 452         REP_PROTOCOL_ENTITY_CREATE_CHILD,
 453         REP_PROTOCOL_ENTITY_CREATE_PG,
 454         REP_PROTOCOL_ENTITY_DELETE,
 455         REP_PROTOCOL_ENTITY_RESET,
 456         REP_PROTOCOL_ENTITY_TEARDOWN,
 457
 458         REP_PROTOCOL_ITER_SETUP,
 459         REP_PROTOCOL_ITER_START,
 460         REP_PROTOCOL_ITER_READ,
 461         REP_PROTOCOL_ITER_READ_VALUE,
 462         REP_PROTOCOL_ITER_RESET,
 463         REP_PROTOCOL_ITER_TEARDOWN,
 464
 465         REP_PROTOCOL_NEXT_SNAPLEVEL,
 466
 467         REP_PROTOCOL_SNAPSHOT_TAKE,
 468         REP_PROTOCOL_SNAPSHOT_TAKE_NAMED,
 469         REP_PROTOCOL_SNAPSHOT_ATTACH,
 470
 471         REP_PROTOCOL_PROPERTY_GET_TYPE,
 472         REP_PROTOCOL_PROPERTY_GET_VALUE,
 473
 474         REP_PROTOCOL_PROPERTYGRP_SETUP_WAIT,
 475         REP_PROTOCOL_PROPERTYGRP_TX_START,
 476         REP_PROTOCOL_PROPERTYGRP_TX_COMMIT,
 477
 478         REP_PROTOCOL_CLIENT_ADD_NOTIFY,
 479         REP_PROTOCOL_CLIENT_WAIT,
 480
 481         REP_PROTOCOL_BACKUP,
 482
 483         REP_PROTOCOL_SET_AUDIT_ANNOTATION,
 484
 485         REP_PROTOCOL_SWITCH,
 486
 487         REP_PROTOCOL_MAX_REQUEST
 488 };
 489
 490 /*
 491  * Response codes.  These are returned to the client, and the errors are
 492  * translated into scf_error_t's by libscf (see proto_error()).
 493  */
 494 typedef int32_t rep_protocol_responseid_t;
 495 enum rep_protocol_responseid {
 496         REP_PROTOCOL_SUCCESS =                  0,
 497         /* iterators: No more values. */
 498         REP_PROTOCOL_DONE =                     1,
 499
 500         /* Request from client was malformed. */
 501         REP_PROTOCOL_FAIL_BAD_REQUEST =         -1,
 502         /* Prerequisite call has not been made. */
 503         REP_PROTOCOL_FAIL_MISORDERED =          -2,
 504         /* Register for ID has not been created. */
 505         REP_PROTOCOL_FAIL_UNKNOWN_ID =          -3,
 506         /* Out of memory or other resource. */
 507         REP_PROTOCOL_FAIL_NO_RESOURCES =        -4,
 508         /* Type argument is invalid. */
 509         REP_PROTOCOL_FAIL_INVALID_TYPE =        -5,
 510         /* Requested object does not exist. */
 511         REP_PROTOCOL_FAIL_NOT_FOUND =           -6,
 512         /* Register for given ID does not point to an object. */
 513         REP_PROTOCOL_FAIL_NOT_SET =             -7,
 514
 515         /* Requested name is longer than supplied buffer. */
 516         REP_PROTOCOL_FAIL_TRUNCATED =           -8,
 517         /* Operation requires different type. */
 518         REP_PROTOCOL_FAIL_TYPE_MISMATCH =       -9,
 519
 520         /* Changeable object has been changed since last update. */
 521         REP_PROTOCOL_FAIL_NOT_LATEST =          -10,
 522         /* Creation failed because object with given name exists. */
 523         REP_PROTOCOL_FAIL_EXISTS =              -11,
 524         /* Transaction is invalid. */
 525         REP_PROTOCOL_FAIL_BAD_TX =              -12,
 526         /* Operation is not applicable to indicated object. */
 527         REP_PROTOCOL_FAIL_NOT_APPLICABLE =      -13,
 528         /* Two IDs for operation were unexpectedly equal. */
 529         REP_PROTOCOL_FAIL_DUPLICATE_ID =        -14,
 530
 531         /* Permission denied. */
 532         REP_PROTOCOL_FAIL_PERMISSION_DENIED =   -15,
 533         /* Backend does not exist or otherwise refused access. */
 534         REP_PROTOCOL_FAIL_BACKEND_ACCESS =      -16,
 535         /* Backend is read-only. */
 536         REP_PROTOCOL_FAIL_BACKEND_READONLY =    -17,
 537
 538         /* Object has been deleted. */
 539         REP_PROTOCOL_FAIL_DELETED =             -18,
 540
 541         REP_PROTOCOL_FAIL_UNKNOWN =             -0xfd
 542 };
 543
 544 /*
 545  * Types
 546  */
 547 typedef enum rep_protocol_entity {
 548         REP_PROTOCOL_ENTITY_NONE,
 549         REP_PROTOCOL_ENTITY_SCOPE,
 550         REP_PROTOCOL_ENTITY_SERVICE,
 551         REP_PROTOCOL_ENTITY_INSTANCE,
 552         REP_PROTOCOL_ENTITY_SNAPSHOT,
 553         REP_PROTOCOL_ENTITY_SNAPLEVEL,
 554         REP_PROTOCOL_ENTITY_PROPERTYGRP,
 555         REP_PROTOCOL_ENTITY_CPROPERTYGRP,       /* "composed" property group */
 556         REP_PROTOCOL_ENTITY_PROPERTY,
 557         REP_PROTOCOL_ENTITY_VALUE,
 558
 559         REP_PROTOCOL_ENTITY_MAX
 560 } rep_protocol_entity_t;
 561
 562 typedef enum rep_protocol_value_type {
 563         REP_PROTOCOL_TYPE_INVALID       = '\0',
 564         REP_PROTOCOL_TYPE_BOOLEAN       = 'b',
 565         REP_PROTOCOL_TYPE_COUNT         = 'c',
 566         REP_PROTOCOL_TYPE_INTEGER       = 'i',
 567         REP_PROTOCOL_TYPE_TIME          = 't',
 568         REP_PROTOCOL_TYPE_STRING        = 's',
 569         REP_PROTOCOL_TYPE_OPAQUE        = 'o',
 570
 571         REP_PROTOCOL_SUBTYPE_USTRING    = REP_PROTOCOL_TYPE_STRING|('u' << 8),
 572         REP_PROTOCOL_SUBTYPE_URI        = REP_PROTOCOL_TYPE_STRING|('U' << 8),
 573         REP_PROTOCOL_SUBTYPE_FMRI       = REP_PROTOCOL_TYPE_STRING|('f' << 8),
 574
 575         REP_PROTOCOL_SUBTYPE_HOST       = REP_PROTOCOL_TYPE_STRING|('h' << 8),
 576         REP_PROTOCOL_SUBTYPE_HOSTNAME   = REP_PROTOCOL_TYPE_STRING|('N' << 8),
 577         REP_PROTOCOL_SUBTYPE_NETADDR    = REP_PROTOCOL_TYPE_STRING|('n' << 8),
 578         REP_PROTOCOL_SUBTYPE_NETADDR_V4 = REP_PROTOCOL_TYPE_STRING|('4' << 8),
 579         REP_PROTOCOL_SUBTYPE_NETADDR_V6 = REP_PROTOCOL_TYPE_STRING|('6' << 8)
 580 } rep_protocol_value_type_t;
 581
 582
 583 #define REP_PROTOCOL_BASE_TYPE(t)       ((t) & 0x00ff)
 584 #define REP_PROTOCOL_SUBTYPE(t)         (((t) & 0xff00) >> 8)
 585
 586 /*
 587  * Request structures
 588  */
 589 typedef struct rep_protocol_request {
 590         enum rep_protocol_requestid rpr_request;
 591 } rep_protocol_request_t;
 592
 593 struct rep_protocol_iter_request {
 594         enum rep_protocol_requestid rpr_request;
 595         uint32_t rpr_iterid;
 596 };
 597
 598 struct rep_protocol_iter_start {
 599         enum rep_protocol_requestid rpr_request;        /* ITER_START */
 600         uint32_t rpr_iterid;
 601
 602         uint32_t rpr_entity;
 603         uint32_t rpr_itertype;
 604         uint32_t rpr_flags;
 605         char    rpr_pattern[REP_PROTOCOL_NAME_LEN];
 606 };
 607 #define RP_ITER_START_ALL       0x00000001      /* ignore pattern, match all */
 608 #define RP_ITER_START_EXACT     0x00000002      /* exact match with pattern */
 609 #define RP_ITER_START_PGTYPE    0x00000003      /* exact match pg type */
 610 #define RP_ITER_START_FILT_MASK 0x00000003
 611 #define RP_ITER_START_COMPOSED  0x00000004      /* composed */
 612
 613 struct rep_protocol_iter_read {
 614         enum rep_protocol_requestid rpr_request;        /* ITER_READ */
 615         uint32_t rpr_iterid;
 616         uint32_t rpr_sequence;          /* client increments upon success */
 617         uint32_t rpr_entityid;          /* entity to write result to */
 618 };
 619
 620 struct rep_protocol_iter_read_value {
 621         enum rep_protocol_requestid rpr_request;        /* ITER_READ_VALUE */
 622         uint32_t rpr_iterid;
 623         uint32_t rpr_sequence;          /* client increments upon success */
 624 };
 625
 626 struct rep_protocol_entity_setup {
 627         enum rep_protocol_requestid rpr_request;        /* ENTITY_SETUP */
 628         uint32_t rpr_entityid;
 629         uint32_t rpr_entitytype;
 630 };
 631
 632 struct rep_protocol_entity_name {
 633         enum rep_protocol_requestid rpr_request;        /* ENTITY_NAME */
 634         uint32_t rpr_entityid;
 635         uint32_t rpr_answertype;
 636 };
 637 #define RP_ENTITY_NAME_NAME                     0
 638 #define RP_ENTITY_NAME_PGTYPE                   1
 639 #define RP_ENTITY_NAME_PGFLAGS                  2
 640 #define RP_ENTITY_NAME_SNAPLEVEL_SCOPE          3
 641 #define RP_ENTITY_NAME_SNAPLEVEL_SERVICE        4
 642 #define RP_ENTITY_NAME_SNAPLEVEL_INSTANCE       5
 643 #define RP_ENTITY_NAME_PGREADPROT               6
 644
 645 struct rep_protocol_entity_update {
 646         enum rep_protocol_requestid rpr_request;        /* ENTITY_UPDATE */
 647         uint32_t rpr_entityid;
 648         uint32_t rpr_changeid;
 649 };
 650
 651 struct rep_protocol_entity_parent_type {
 652         enum rep_protocol_requestid rpr_request;        /* ENTITY_PARENT_TYPE */
 653         uint32_t rpr_entityid;
 654 };
 655
 656 struct rep_protocol_entity_parent {
 657         enum rep_protocol_requestid rpr_request;        /* ENTITY_GET_PARENT */
 658         uint32_t rpr_entityid;
 659         uint32_t rpr_outid;
 660 };
 661
 662 struct rep_protocol_entity_get {
 663         enum rep_protocol_requestid rpr_request;        /* ENTITY_SET */
 664         uint32_t rpr_entityid;
 665         uint32_t rpr_object;
 666 };
 667 #define RP_ENTITY_GET_INVALIDATE        1
 668 #define RP_ENTITY_GET_MOST_LOCAL_SCOPE  2
 669
 670 struct rep_protocol_entity_create_child {
 671         enum rep_protocol_requestid rpr_request; /* ENTITY_CREATE_CHILD */
 672         uint32_t rpr_entityid;
 673         uint32_t rpr_childtype;
 674         uint32_t rpr_childid;
 675         uint32_t rpr_changeid;
 676         char    rpr_name[REP_PROTOCOL_NAME_LEN];
 677 };
 678
 679 struct rep_protocol_entity_create_pg {
 680         enum rep_protocol_requestid rpr_request; /* ENTITY_CREATE_PG */
 681         uint32_t rpr_entityid;
 682         uint32_t rpr_childtype;
 683         uint32_t rpr_childid;
 684         uint32_t rpr_changeid;
 685         char    rpr_name[REP_PROTOCOL_NAME_LEN];
 686         char    rpr_type[REP_PROTOCOL_NAME_LEN];
 687         uint32_t rpr_flags;
 688 };
 689
 690 struct rep_protocol_entity_get_child {
 691         enum rep_protocol_requestid rpr_request;        /* ENTITY_GET_CHILD */
 692         uint32_t rpr_entityid;
 693         uint32_t rpr_childid;
 694         char    rpr_name[REP_PROTOCOL_NAME_LEN];
 695 };
 696
 697 struct rep_protocol_entity_delete {
 698         enum rep_protocol_requestid rpr_request; /* ENTITY_DELETE_CHILD */
 699         uint32_t rpr_entityid;
 700         uint32_t rpr_changeid;
 701 };
 702
 703 struct rep_protocol_entity_reset {
 704         enum rep_protocol_requestid rpr_request;        /* ENTITY_NAME */
 705         uint32_t rpr_entityid;
 706 };
 707
 708 struct rep_protocol_entity_request {
 709         enum rep_protocol_requestid rpr_request;        /* ENTITY_NAME */
 710         uint32_t rpr_entityid;
 711 };
 712
 713 struct rep_protocol_entity_teardown {
 714         enum rep_protocol_requestid rpr_request;        /* ENTITY_TEARDOWN */
 715         uint32_t rpr_entityid;
 716 };
 717
 718 struct rep_protocol_entity_pair {
 719         enum rep_protocol_requestid rpr_request;        /* NEXT_SNAPLEVEL */
 720         uint32_t rpr_entity_src;
 721         uint32_t rpr_entity_dst;
 722 };
 723
 724 struct rep_protocol_transaction_start {
 725         enum rep_protocol_requestid rpr_request;        /* TX_SETUP */
 726         uint32_t rpr_entityid_tx;               /* property group tx entity */
 727         uint32_t rpr_entityid;                  /* property group entity */
 728 };
 729
 730 struct rep_protocol_transaction_commit {
 731         enum rep_protocol_requestid rpr_request; /* TX_COMMIT */
 732         uint32_t rpr_entityid;
 733         uint32_t rpr_size;                      /* size of entire structure */
 734         uint8_t rpr_cmd[1];
 735 };
 736
 737 #define REP_PROTOCOL_TRANSACTION_COMMIT_SIZE(sz) \
 738             (offsetof(struct rep_protocol_transaction_commit, rpr_cmd[sz]))
 739
 740 #define REP_PROTOCOL_TRANSACTION_COMMIT_MIN_SIZE \
 741             REP_PROTOCOL_TRANSACTION_COMMIT_SIZE(0)
 742
 743 enum rep_protocol_transaction_action {
 744         REP_PROTOCOL_TX_ENTRY_INVALID,  /* N/A */
 745         REP_PROTOCOL_TX_ENTRY_NEW,      /* new property */
 746         REP_PROTOCOL_TX_ENTRY_CLEAR,    /* clear old property */
 747         REP_PROTOCOL_TX_ENTRY_REPLACE,  /* change type of old property */
 748         REP_PROTOCOL_TX_ENTRY_DELETE    /* delete property (no values) */
 749 };
 750
 751 struct rep_protocol_transaction_cmd {
 752         enum    rep_protocol_transaction_action rptc_action;
 753         uint32_t rptc_type;
 754         uint32_t rptc_size;             /* size of entire structure */
 755         uint32_t rptc_name_len;
 756         uint8_t rptc_data[1];
 757 };
 758
 759 #define REP_PROTOCOL_TRANSACTION_CMD_SIZE(sz) \
 760             (offsetof(struct rep_protocol_transaction_cmd, rptc_data[sz]))
 761
 762 #define REP_PROTOCOL_TRANSACTION_CMD_MIN_SIZE \
 763             REP_PROTOCOL_TRANSACTION_CMD_SIZE(0)
 764
 765 #define TX_SIZE(x)      P2ROUNDUP((x), sizeof (uint32_t))
 766
 767 struct rep_protocol_transaction_request {
 768         enum rep_protocol_requestid rpr_request; /* SETUP, ABORT or TEARDOWN */
 769         uint32_t rpr_txid;
 770 };
 771
 772 struct rep_protocol_property_request {
 773         enum rep_protocol_requestid rpr_request;
 774         uint32_t rpr_entityid;
 775 };
 776
 777 struct rep_protocol_propertygrp_request {
 778         enum rep_protocol_requestid rpr_request;
 779         uint32_t rpr_entityid;
 780 };
 781
 782 struct rep_protocol_notify_request {
 783         enum rep_protocol_requestid rpr_request;
 784         uint32_t rpr_type;
 785         char    rpr_pattern[REP_PROTOCOL_NAME_LEN];
 786 };
 787 #define REP_PROTOCOL_NOTIFY_PGNAME 1
 788 #define REP_PROTOCOL_NOTIFY_PGTYPE 2
 789
 790 struct rep_protocol_wait_request {
 791         enum rep_protocol_requestid rpr_request;
 792         uint32_t rpr_entityid;
 793 };
 794
 795 struct rep_protocol_snapshot_take {
 796         enum rep_protocol_requestid rpr_request;        /* SNAPSHOT_TAKE */
 797         uint32_t rpr_entityid_src;
 798         uint32_t rpr_entityid_dest;
 799         int     rpr_flags;
 800         char    rpr_name[REP_PROTOCOL_NAME_LEN];
 801 };
 802 #define REP_SNAPSHOT_NEW        0x00000001
 803 #define REP_SNAPSHOT_ATTACH     0x00000002
 804
 805 struct rep_protocol_snapshot_take_named {
 806         enum rep_protocol_requestid rpr_request; /* SNAPSHOT_TAKE_NAMED */
 807         uint32_t rpr_entityid_src;
 808         uint32_t rpr_entityid_dest;
 809         char    rpr_svcname[REP_PROTOCOL_NAME_LEN];
 810         char    rpr_instname[REP_PROTOCOL_NAME_LEN];
 811         char    rpr_name[REP_PROTOCOL_NAME_LEN];
 812 };
 813
 814 struct rep_protocol_snapshot_attach {
 815         enum rep_protocol_requestid rpr_request;        /* SNAPSHOT_ATTACH */
 816         uint32_t rpr_entityid_src;
 817         uint32_t rpr_entityid_dest;
 818 };
 819
 820 struct rep_protocol_backup_request {
 821         enum rep_protocol_requestid rpr_request;        /* BACKUP */
 822         uint32_t rpr_changeid;
 823         char rpr_name[REP_PROTOCOL_NAME_LEN];
 824 };
 825
 826 struct rep_protocol_annotation {
 827         enum rep_protocol_requestid rpr_request;        /* SET_ANNOTATION */
 828         char rpr_operation[REP_PROTOCOL_NAME_LEN];
 829         char rpr_file[MAXPATHLEN];
 830 };
 831
 832 struct rep_protocol_switch_request {
 833         enum rep_protocol_requestid rpr_request;        /* SWITCH */
 834         uint32_t rpr_changeid;
 835         int rpr_flag;
 836 };
 837
 838 /*
 839  * Response structures
 840  */
 841 typedef struct rep_protocol_response {
 842         rep_protocol_responseid_t rpr_response;
 843 } rep_protocol_response_t;
 844
 845 struct rep_protocol_integer_response {
 846         rep_protocol_responseid_t rpr_response;
 847         uint32_t rpr_value;
 848 };
 849
 850 struct rep_protocol_name_response {     /* response to ENTITY_NAME */
 851         rep_protocol_responseid_t rpr_response;
 852         char rpr_name[REP_PROTOCOL_NAME_LEN];
 853 };
 854
 855 struct rep_protocol_fmri_response {
 856         rep_protocol_responseid_t rpr_response;
 857         char rpr_fmri[REP_PROTOCOL_FMRI_LEN];
 858 };
 859
 860 struct rep_protocol_value_response {
 861         rep_protocol_responseid_t rpr_response;
 862         rep_protocol_value_type_t rpr_type;
 863         char                    rpr_value[2 * REP_PROTOCOL_VALUE_LEN + 1];
 864 };
 865
 866 #ifdef  __cplusplus
 867 }
 868 #endif
 869
 870 #endif  /* _REPCACHE_PROTOCOL_H */