1 /**
2  * @copyright
3  * ====================================================================
4  *    Licensed to the Apache Software Foundation (ASF) under one
5  *    or more contributor license agreements.  See the NOTICE file
6  *    distributed with this work for additional information
7  *    regarding copyright ownership.  The ASF licenses this file
8  *    to you under the Apache License, Version 2.0 (the
9  *    "License"); you may not use this file except in compliance
10  *    with the License.  You may obtain a copy of the License at
11  *
12  *      http://www.apache.org/licenses/LICENSE-2.0
13  *
14  *    Unless required by applicable law or agreed to in writing,
15  *    software distributed under the License is distributed on an
16  *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17  *    KIND, either express or implied.  See the License for the
18  *    specific language governing permissions and limitations
19  *    under the License.
20  * ====================================================================
21  * @endcopyright
22  *
23  * @file svn_repos.h
24  * @brief Tools built on top of the filesystem.
25  */
26 
27 #ifndef SVN_REPOS_H
28 #define SVN_REPOS_H
29 
30 #include <apr_pools.h>
31 #include <apr_hash.h>
32 #include <apr_tables.h>
33 #include <apr_time.h>
34 
35 #include "svn_types.h"
36 #include "svn_string.h"
37 #include "svn_delta.h"
38 #include "svn_fs.h"
39 #include "svn_io.h"
40 #include "svn_mergeinfo.h"
41 
42 
43 #ifdef __cplusplus
44 extern "C" {
45 #endif /* __cplusplus */
46 
47 /* ---------------------------------------------------------------*/
48 
49 /**
50  * Get libsvn_repos version information.
51  *
52  * @since New in 1.1.
53  */
54 const svn_version_t *
55 svn_repos_version(void);
56 
57 
58 /* Some useful enums.  They need to be declared here for the notification
59    system to pick them up. */
60 /** The different "actions" attached to nodes in the dumpfile. */
61 enum svn_node_action
62 {
63   svn_node_action_change,
64   svn_node_action_add,
65   svn_node_action_delete,
66   svn_node_action_replace
67 };
68 
69 
70 /** @defgroup svn_repos_authz_callbacks Repository authorization callbacks
71  * @{
72  */
73 
74 /** Callback type for checking authorization on a path.
75  *
76  * Set @a *allowed to TRUE to indicate that some operation is
77  * authorized for @a path in @a root, or set it to FALSE to indicate
78  * unauthorized (presumably according to state stored in @a baton).
79  *
80  * Do not assume @a pool has any lifetime beyond this call.
81  *
82  * The exact operation being authorized depends on the callback
83  * implementation.  For read authorization, for example, the caller
84  * would implement an instance that does read checking, and pass it as
85  * a parameter named [perhaps] 'authz_read_func'.  The receiver of
86  * that parameter might also take another parameter named
87  * 'authz_write_func', which although sharing this type, would be a
88  * different implementation.
89  *
90  * @note If someday we want more sophisticated authorization states
91  * than just yes/no, @a allowed can become an enum type.
92  */
93 typedef svn_error_t *(*svn_repos_authz_func_t)(svn_boolean_t *allowed,
94                                                svn_fs_root_t *root,
95                                                const char *path,
96                                                void *baton,
97                                                apr_pool_t *pool);
98 
99 
100 /** An enum defining the kinds of access authz looks up.
101  *
102  * @since New in 1.3.
103  */
104 typedef enum svn_repos_authz_access_t
105 {
106   /** No access. */
107   svn_authz_none = 0,
108 
109   /** Path can be read. */
110   svn_authz_read = 1,
111 
112   /** Path can be altered. */
113   svn_authz_write = 2,
114 
115   /** The other access credentials are recursive. */
116   svn_authz_recursive = 4
117 } svn_repos_authz_access_t;
118 
119 
120 /** Callback type for checking authorization on paths produced by
121  * the repository commit editor.
122  *
123  * Set @a *allowed to TRUE to indicate that the @a required access on
124  * @a path in @a root is authorized, or set it to FALSE to indicate
125  * unauthorized (presumable according to state stored in @a baton).
126  *
127  * If @a path is NULL, the callback should perform a global authz
128  * lookup for the @a required access.  That is, the lookup should
129  * check if the @a required access is granted for at least one path of
130  * the repository, and set @a *allowed to TRUE if so.  @a root may
131  * also be NULL if @a path is NULL.
132  *
133  * This callback is very similar to svn_repos_authz_func_t, with the
134  * exception of the addition of the @a required parameter.
135  * This is due to historical reasons: when authz was first implemented
136  * for svn_repos_dir_delta2(), it seemed there would need only checks
137  * for read and write operations, hence the svn_repos_authz_func_t
138  * callback prototype and usage scenario.  But it was then realized
139  * that lookups due to copying needed to be recursive, and that
140  * brute-force recursive lookups didn't square with the O(1)
141  * performances a copy operation should have.
142  *
143  * So a special way to ask for a recursive lookup was introduced.  The
144  * commit editor needs this capability to retain acceptable
145  * performance.  Instead of revving the existing callback, causing
146  * unnecessary revving of functions that don't actually need the
147  * extended functionality, this second, more complete callback was
148  * introduced, for use by the commit editor.
149  *
150  * Some day, it would be nice to reunite these two callbacks and do
151  * the necessary revving anyway, but for the time being, this dual
152  * callback mechanism will do.
153  */
154 typedef svn_error_t *(*svn_repos_authz_callback_t)
155   (svn_repos_authz_access_t required,
156    svn_boolean_t *allowed,
157    svn_fs_root_t *root,
158    const char *path,
159    void *baton,
160    apr_pool_t *pool);
161 
162 /** @} */
163 
164 
165 /** @defgroup svn_repos_notifications Repository notifications
166  * @{
167  */
168 
169 /* Notification system. */
170 
171 /** The type of action occurring.
172  *
173  * @since New in 1.7.
174  */
175 typedef enum svn_repos_notify_action_t
176 {
177   /** A warning message is waiting. */
178   svn_repos_notify_warning = 0,
179 
180   /** A revision has finished being dumped. */
181   svn_repos_notify_dump_rev_end,
182 
183   /** A revision has finished being verified. */
184   svn_repos_notify_verify_rev_end,
185 
186   /** All revisions have finished being dumped. */
187   svn_repos_notify_dump_end,
188 
189   /** All revisions have finished being verified. */
190   svn_repos_notify_verify_end,
191 
192   /** packing of an FSFS shard has commenced */
193   svn_repos_notify_pack_shard_start,
194 
195   /** packing of an FSFS shard is completed */
196   svn_repos_notify_pack_shard_end,
197 
198   /** packing of the shard revprops has commenced */
199   svn_repos_notify_pack_shard_start_revprop,
200 
201   /** packing of the shard revprops has completed */
202   svn_repos_notify_pack_shard_end_revprop,
203 
204   /** A revision has begun loading */
205   svn_repos_notify_load_txn_start,
206 
207   /** A revision has finished loading */
208   svn_repos_notify_load_txn_committed,
209 
210   /** A node has begun loading */
211   svn_repos_notify_load_node_start,
212 
213   /** A node has finished loading */
214   svn_repos_notify_load_node_done,
215 
216   /** A copied node has been encountered */
217   svn_repos_notify_load_copied_node,
218 
219   /** Mergeinfo has been normalized */
220   svn_repos_notify_load_normalized_mergeinfo,
221 
222   /** The operation has acquired a mutex for the repo. */
223   svn_repos_notify_mutex_acquired,
224 
225   /** Recover has started. */
226   svn_repos_notify_recover_start,
227 
228   /** Upgrade has started. */
229   svn_repos_notify_upgrade_start,
230 
231   /** A revision was skipped during loading. @since New in 1.8. */
232   svn_repos_notify_load_skipped_rev,
233 
234   /** The structure of a revision is being verified.  @since New in 1.8. */
235   svn_repos_notify_verify_rev_structure,
236 
237   /** A revprop shard got packed. @since New in 1.9. */
238   svn_repos_notify_pack_revprops,
239 
240   /** A non-packed revprop shard got removed. @since New in 1.9. */
241   svn_repos_notify_cleanup_revprops,
242 
243   /** The repository format got bumped. @since New in 1.9. */
244   svn_repos_notify_format_bumped,
245 
246   /** A revision range was copied. @since New in 1.9. */
247   svn_repos_notify_hotcopy_rev_range,
248 
249   /** The repository pack did not do anything. @since New in 1.10. */
250   svn_repos_notify_pack_noop,
251 
252   /** The revision properties got set. @since New in 1.10. */
253   svn_repos_notify_load_revprop_set
254 } svn_repos_notify_action_t;
255 
256 /** The type of warning occurring.
257  *
258  * @since New in 1.7.
259  */
260 typedef enum svn_repos_notify_warning_t
261 {
262   /** Referencing copy source data from a revision earlier than the
263    * first revision dumped. */
264   svn_repos_notify_warning_found_old_reference,
265 
266   /** An #SVN_PROP_MERGEINFO property's encoded mergeinfo references a
267    * revision earlier than the first revision dumped. */
268   svn_repos_notify_warning_found_old_mergeinfo,
269 
270   /** Found an invalid path in the filesystem.
271    * @see svn_fs.h:"Directory entry names and directory paths" */
272   /* ### TODO(doxygen): make that a proper doxygen link */
273   /* See svn_fs__path_valid(). */
274   svn_repos_notify_warning_invalid_fspath,
275 
276   /**
277    * Detected a name collision. Reported when the names of two or more
278    * entries in the same directory differ only in character
279    * representation (normalization), but are otherwise identical.
280    *
281    * @since New in 1.9.
282    */
283   svn_repos_notify_warning_name_collision,
284 
285   /**
286    * Detected a mergeinfo path collision. Reported when the paths in
287    * two or more entries in the same svn:mergeinfo property differ
288    * only in character representation (normalization), but are
289    * otherwise identical.
290    *
291    * @since New in 1.9.
292    */
293   svn_repos_notify_warning_mergeinfo_collision,
294 
295   /**
296    * Detected invalid mergeinfo.
297    *
298    * @since New in 1.9.
299    */
300   svn_repos_notify_warning_invalid_mergeinfo
301 } svn_repos_notify_warning_t;
302 
303 /**
304  * Structure used by #svn_repos_notify_func_t.
305  *
306  * The only field guaranteed to be populated is @c action.  Other fields are
307  * dependent upon the @c action.  (See individual fields for more information.)
308  *
309  * @note Callers of notification functions should use
310  * svn_repos_notify_create() to create structures of this type to allow for
311  * future extensibility.
312  *
313  * @since New in 1.7.
314  */
315 typedef struct svn_repos_notify_t
316 {
317   /** Action that describes what happened in the repository. */
318   svn_repos_notify_action_t action;
319 
320   /** For #svn_repos_notify_dump_rev_end and #svn_repos_notify_verify_rev_end,
321    * the revision which just completed.
322    * For #svn_fs_upgrade_format_bumped, the new format version. */
323   svn_revnum_t revision;
324 
325   /** For #svn_repos_notify_warning, the warning message. */
326   const char *warning_str;
327   /** For #svn_repos_notify_warning, the warning type. */
328   svn_repos_notify_warning_t warning;
329 
330   /** For #svn_repos_notify_pack_shard_start,
331       #svn_repos_notify_pack_shard_end,
332       #svn_repos_notify_pack_revprops,
333       #svn_repos_notify_cleanup_revprops
334       #svn_repos_notify_pack_shard_start_revprop, and
335       #svn_repos_notify_pack_shard_end_revprop, the shard processed. */
336   apr_int64_t shard;
337 
338   /** For #svn_repos_notify_load_txn_committed, the revision committed. */
339   svn_revnum_t new_revision;
340 
341   /** For #svn_repos_notify_load_txn_committed, the source revision, if
342       different from @a new_revision, otherwise #SVN_INVALID_REVNUM.
343       For #svn_repos_notify_load_txn_start and
344       #svn_repos_notify_load_skipped_rev, the source revision. */
345   svn_revnum_t old_revision;
346 
347   /** For #svn_repos_notify_load_node_start, the action being taken on the
348       node. */
349   enum svn_node_action node_action;
350 
351   /** For #svn_repos_notify_load_node_start, the path of the node. */
352   const char *path;
353 
354   /** For #svn_repos_notify_hotcopy_rev_range, the start of the copied
355       revision range.
356       @since New in 1.9. */
357   svn_revnum_t start_revision;
358 
359   /** For #svn_repos_notify_hotcopy_rev_range, the end of the copied
360       revision range (might be the same as @a start_revision).
361       @since New in 1.9. */
362   svn_revnum_t end_revision;
363 
364   /* NOTE: Add new fields at the end to preserve binary compatibility.
365      Also, if you add fields here, you have to update
366      svn_repos_notify_create(). */
367 } svn_repos_notify_t;
368 
369 /** Callback for providing notification from the repository.
370  * Returns @c void.  Justification: success of an operation is not dependent
371  * upon successful notification of that operation.
372  *
373  * @since New in 1.7. */
374 typedef void (*svn_repos_notify_func_t)(void *baton,
375                                         const svn_repos_notify_t *notify,
376                                         apr_pool_t *scratch_pool);
377 
378 /** Callback for filtering repository contents during dump.
379  *
380  * Set @a *include to TRUE to indicate that node, identified by path
381  * @a path in @a root should be included in dump, or set it to @c FALSE
382  * to indicate that node should be excluded (presumably according to state
383  * stored in @a baton).
384  *
385  * Do not assume @a scratch_pool has any lifetime beyond this call.
386  *
387  * @since New in 1.10.
388  */
389 typedef svn_error_t * (*svn_repos_dump_filter_func_t)(
390   svn_boolean_t *include,
391   svn_fs_root_t *root,
392   const char *path,
393   void *baton,
394   apr_pool_t *scratch_pool);
395 
396 /**
397  * Allocate an #svn_repos_notify_t structure in @a result_pool, initialize
398  * and return it.
399  *
400  * @since New in 1.7.
401  */
402 svn_repos_notify_t *
403 svn_repos_notify_create(svn_repos_notify_action_t action,
404                         apr_pool_t *result_pool);
405 
406 /** @} */
407 
408 
409 /** The repository object. */
410 typedef struct svn_repos_t svn_repos_t;
411 
412 /* Opening and creating repositories. */
413 
414 
415 /** Find the root path of the repository that contains @a path.
416  *
417  * If a repository was found, the path to the root of the repository
418  * is returned, else @c NULL. The pointer to the returned path may be
419  * equal to @a path.
420  */
421 const char *
422 svn_repos_find_root_path(const char *path,
423                          apr_pool_t *pool);
424 
425 /** Set @a *repos_p to a repository object for the repository at @a path.
426  *
427  * Allocate @a *repos_p in @a result_pool.
428  *
429  * Acquires a shared lock on the repository, and attaches a cleanup
430  * function to @a result_pool to remove the lock.  If no lock can be acquired,
431  * returns error, with undefined effect on @a *repos_p.  If an exclusive
432  * lock is present, this blocks until it's gone.  @a fs_config will be
433  * passed to the filesystem initialization function and may be @c NULL.
434  *
435  * Use @a scratch_pool for temporary allocations.
436  *
437  * @since New in 1.9.
438  */
439 svn_error_t *
440 svn_repos_open3(svn_repos_t **repos_p,
441                 const char *path,
442                 apr_hash_t *fs_config,
443                 apr_pool_t *result_pool,
444                 apr_pool_t *scratch_pool);
445 
446 /** Similar to svn_repos_open3() but without @a scratch_pool.
447  *
448  * @deprecated Provided for backward compatibility with 1.8 API.
449  * @since New in 1.7.
450  */
451 SVN_DEPRECATED
452 svn_error_t *
453 svn_repos_open2(svn_repos_t **repos_p,
454                 const char *path,
455                 apr_hash_t *fs_config,
456                 apr_pool_t *pool);
457 
458 /** Similar to svn_repos_open2() with @a fs_config set to NULL.
459  *
460  * @deprecated Provided for backward compatibility with 1.6 API.
461  */
462 SVN_DEPRECATED
463 svn_error_t *
464 svn_repos_open(svn_repos_t **repos_p,
465                const char *path,
466                apr_pool_t *pool);
467 
468 /** Create a new Subversion repository at @a path, building the necessary
469  * directory structure, creating the filesystem, and so on.
470  * Return the repository object in @a *repos_p, allocated in @a pool.
471  *
472  * @a config is a client configuration hash of #svn_config_t * items
473  * keyed on config category names, and may be NULL.
474  *
475  * @a fs_config is passed to the filesystem, and may be NULL.
476  *
477  * @a unused_1 and @a unused_2 are not used and should be NULL.
478  */
479 svn_error_t *
480 svn_repos_create(svn_repos_t **repos_p,
481                  const char *path,
482                  const char *unused_1,
483                  const char *unused_2,
484                  apr_hash_t *config,
485                  apr_hash_t *fs_config,
486                  apr_pool_t *pool);
487 
488 /**
489  * Upgrade the Subversion repository (and its underlying versioned
490  * filesystem) located in the directory @a path to the latest version
491  * supported by this library.  If the requested upgrade is not
492  * supported due to the current state of the repository or it
493  * underlying filesystem, return #SVN_ERR_REPOS_UNSUPPORTED_UPGRADE
494  * or #SVN_ERR_FS_UNSUPPORTED_UPGRADE (respectively) and make no
495  * changes to the repository or filesystem.
496  *
497  * Acquires an exclusive lock on the repository, upgrades the
498  * repository, and releases the lock.  If an exclusive lock can't be
499  * acquired, returns error.
500  *
501  * If @a nonblocking is TRUE, an error of type EWOULDBLOCK is
502  * returned if the lock is not immediately available.
503  *
504  * If @a start_callback is not NULL, it will be called with @a
505  * start_callback_baton as argument before the upgrade starts, but
506  * after the exclusive lock has been acquired.
507  *
508  * Use @a pool for necessary allocations.
509  *
510  * @note This functionality is provided as a convenience for
511  * administrators wishing to make use of new Subversion functionality
512  * without a potentially costly full repository dump/load.  As such,
513  * the operation performs only the minimum amount of work needed to
514  * accomplish this while maintaining the integrity of the repository.
515  * It does *not* guarantee the most optimized repository state as a
516  * dump and subsequent load would.
517  *
518  * @note On some platforms the exclusive lock does not exclude other
519  * threads in the same process so this function should only be called
520  * by a single threaded process, or by a multi-threaded process when
521  * no other threads are accessing the repository.
522  *
523  * @since New in 1.7.
524  */
525 svn_error_t *
526 svn_repos_upgrade2(const char *path,
527                    svn_boolean_t nonblocking,
528                    svn_repos_notify_func_t notify_func,
529                    void *notify_baton,
530                    apr_pool_t *pool);
531 
532 /**
533  * Similar to svn_repos_upgrade2(), but with @a start_callback and baton,
534  * rather than a notify_callback / baton
535  *
536  * @since New in 1.5.
537  * @deprecated Provided for backward compatibility with the 1.6 API.
538  */
539 SVN_DEPRECATED
540 svn_error_t *
541 svn_repos_upgrade(const char *path,
542                   svn_boolean_t nonblocking,
543                   svn_error_t *(*start_callback)(void *baton),
544                   void *start_callback_baton,
545                   apr_pool_t *pool);
546 
547 /** Destroy the Subversion repository found at @a path, using @a pool for any
548  * necessary allocations.
549  */
550 svn_error_t *
551 svn_repos_delete(const char *path,
552                  apr_pool_t *pool);
553 
554 
555 /** @defgroup svn_repos_capabilities Repository capabilities
556  * @{
557  */
558 
559 /**
560  * Set @a *has to TRUE if @a repos has @a capability (one of the
561  * capabilities beginning with @c "SVN_REPOS_CAPABILITY_"), else set
562  * @a *has to FALSE.
563  *
564  * If @a capability isn't recognized, throw #SVN_ERR_UNKNOWN_CAPABILITY,
565  * with the effect on @a *has undefined.
566  *
567  * Use @a pool for all allocation.
568  *
569  * @since New in 1.5.
570  */
571 svn_error_t *
572 svn_repos_has_capability(svn_repos_t *repos,
573                          svn_boolean_t *has,
574                          const char *capability,
575                          apr_pool_t *pool);
576 
577 /**
578  * Return a set of @a capabilities supported by the running Subversion
579  * library and by @a repos.  (Capabilities supported by this version of
580  * Subversion but not by @a repos are not listed.  This may happen when
581  * svn_repos_upgrade2() has not been called after a software upgrade.)
582  *
583  * The set is represented as a hash whose const char * keys are the set
584  * members.  The values are not defined.
585  *
586  * Allocate @a capabilities in @a result_pool and use @a scratch_pool for
587  * temporary allocations.
588  *
589  * @see svn_repos_info_format
590  *
591  * @since New in 1.9.
592  */
593 svn_error_t *
594 svn_repos_capabilities(apr_hash_t **capabilities,
595                        svn_repos_t *repos,
596                        apr_pool_t *result_pool,
597                        apr_pool_t *scratch_pool);
598 
599 /**
600  * The capability of doing the right thing with merge-tracking
601  * information, both storing it and responding to queries about it.
602  *
603  * @since New in 1.5.
604  */
605 #define SVN_REPOS_CAPABILITY_MERGEINFO "mergeinfo"
606 /*       *** PLEASE READ THIS IF YOU ADD A NEW CAPABILITY ***
607  *
608  * @c SVN_REPOS_CAPABILITY_foo strings should not include colons, to
609  * be consistent with @c SVN_RA_CAPABILITY_foo strings, which forbid
610  * colons for their own reasons.  While this RA limitation has no
611  * direct impact on repository capabilities, there's no reason to be
612  * gratuitously different either.
613  *
614  * If you add a capability, update svn_repos_capabilities().
615  */
616 
617 /** @} */
618 
619 
620 /**
621  * Store in @a repos the client-reported capabilities @a capabilities,
622  * which must be allocated in memory at least as long-lived as @a repos.
623  *
624  * The elements of @a capabilities are 'const char *', a subset of
625  * the constants beginning with @c SVN_RA_CAPABILITY_.
626  * @a capabilities is not copied, so changing it later will affect
627  * what is remembered by @a repos.
628  *
629  * @note The capabilities are passed along to the start-commit hook;
630  * see that hook's template for details.
631  *
632  * @note As of Subversion 1.5, there are no error conditions defined,
633  * so this always returns SVN_NO_ERROR.  In future releases it may
634  * return error, however, so callers should check.
635  *
636  * @since New in 1.5.
637  */
638 svn_error_t *
639 svn_repos_remember_client_capabilities(svn_repos_t *repos,
640                                        const apr_array_header_t *capabilities);
641 
642 
643 /** Return the filesystem associated with repository object @a repos. */
644 svn_fs_t *
645 svn_repos_fs(svn_repos_t *repos);
646 
647 /** Return the type of filesystem associated with repository object
648  * @a repos allocated in @a result_pool.
649  *
650  * @see #svn_fs_backend_names
651  *
652  * @since New in 1.9.
653  */
654 const char *
655 svn_repos_fs_type(svn_repos_t *repos,
656                   apr_pool_t *result_pool);
657 
658 /** Make a hot copy of the Subversion repository found at @a src_path
659  * to @a dst_path.
660  *
661  * Copy a possibly live Subversion repository from @a src_path to
662  * @a dst_path.  If @a clean_logs is @c TRUE, perform cleanup on the
663  * source filesystem as part of the copy operation; currently, this
664  * means deleting copied, unused logfiles for a Berkeley DB source
665  * repository.
666  *
667  * If @a incremental is TRUE, make an effort to not re-copy information
668  * already present in the destination. If incremental hotcopy is not
669  * implemented by the filesystem backend, raise SVN_ERR_UNSUPPORTED_FEATURE.
670  *
671  * For each revision range copied, the @a notify_func function will be
672  * called with the @a notify_baton and a notification structure containing
673  * appropriate values in @c start_revision and @c end_revision (both
674  * inclusive). @c start_revision might be equal to @c end_revision in
675  * case the copied range consists of a single revision.  Currently, this
676  * notification is not triggered by the BDB backend. @a notify_func
677  * may be @c NULL if this notification is not required.
678  *
679  * The optional @a cancel_func callback will be invoked with
680  * @a cancel_baton as usual to allow the user to preempt this potentially
681  * lengthy operation.
682  *
683  * Use @a scratch_pool for temporary allocations.
684  *
685  * @since New in 1.9.
686  */
687 svn_error_t *
688 svn_repos_hotcopy3(const char *src_path,
689                    const char *dst_path,
690                    svn_boolean_t clean_logs,
691                    svn_boolean_t incremental,
692                    svn_repos_notify_func_t notify_func,
693                    void *notify_baton,
694                    svn_cancel_func_t cancel_func,
695                    void *cancel_baton,
696                    apr_pool_t *scratch_pool);
697 
698 /**
699  * Like svn_repos_hotcopy3(), but with @a notify_func and @a notify_baton
700  * always passed as @c NULL.
701  *
702  * @since New in 1.8.
703  * @deprecated Provided for backward compatibility with the 1.8 API.
704  */
705 SVN_DEPRECATED
706 svn_error_t *
707 svn_repos_hotcopy2(const char *src_path,
708                    const char *dst_path,
709                    svn_boolean_t clean_logs,
710                    svn_boolean_t incremental,
711                    svn_cancel_func_t cancel_func,
712                    void *cancel_baton,
713                    apr_pool_t *pool);
714 
715 /**
716  * Like svn_repos_hotcopy2(), but with @a incremental always passed as
717  * @c FALSE and without cancellation support.
718  *
719  * @deprecated Provided for backward compatibility with the 1.6 API.
720  */
721 SVN_DEPRECATED
722 svn_error_t *
723 svn_repos_hotcopy(const char *src_path,
724                   const char *dst_path,
725                   svn_boolean_t clean_logs,
726                   apr_pool_t *pool);
727 
728 
729 /**
730  * Possibly update the repository, @a repos, to use a more efficient
731  * filesystem representation.  Use @a pool for allocations.
732  *
733  * @since New in 1.7.
734  */
735 svn_error_t *
736 svn_repos_fs_pack2(svn_repos_t *repos,
737                    svn_repos_notify_func_t notify_func,
738                    void *notify_baton,
739                    svn_cancel_func_t cancel_func,
740                    void *cancel_baton,
741                    apr_pool_t *pool);
742 
743 /**
744  * Similar to svn_repos_fs_pack2(), but with a #svn_fs_pack_notify_t instead
745  * of a #svn_repos_notify_t.
746  *
747  * @since New in 1.6.
748  * @deprecated Provided for backward compatibility with the 1.6 API.
749  */
750 SVN_DEPRECATED
751 svn_error_t *
752 svn_repos_fs_pack(svn_repos_t *repos,
753                   svn_fs_pack_notify_t notify_func,
754                   void *notify_baton,
755                   svn_cancel_func_t cancel_func,
756                   void *cancel_baton,
757                   apr_pool_t *pool);
758 
759 /**
760  * Run database recovery procedures on the repository at @a path,
761  * returning the database to a consistent state.  Use @a pool for all
762  * allocation.
763  *
764  * Acquires an exclusive lock on the repository, recovers the
765  * database, and releases the lock.  If an exclusive lock can't be
766  * acquired, returns error.
767  *
768  * If @a nonblocking is TRUE, an error of type EWOULDBLOCK is
769  * returned if the lock is not immediately available.
770  *
771  * If @a notify_func is not NULL, it will be called with @a
772  * notify_baton as argument before the recovery starts, but
773  * after the exclusive lock has been acquired.
774  *
775  * If @a cancel_func is not @c NULL, it is called periodically with
776  * @a cancel_baton as argument to see if the client wishes to cancel
777  * the recovery.
778  *
779  * @note On some platforms the exclusive lock does not exclude other
780  * threads in the same process so this function should only be called
781  * by a single threaded process, or by a multi-threaded process when
782  * no other threads are accessing the repository.
783  *
784  * @since New in 1.7.
785  */
786 svn_error_t *
787 svn_repos_recover4(const char *path,
788                    svn_boolean_t nonblocking,
789                    svn_repos_notify_func_t notify_func,
790                    void *notify_baton,
791                    svn_cancel_func_t cancel_func,
792                    void * cancel_baton,
793                    apr_pool_t *pool);
794 
795 /**
796  * Similar to svn_repos_recover4(), but with @a start callback in place of
797  * the notify_func / baton.
798  *
799  * @since New in 1.5.
800  * @deprecated Provided for backward compatibility with the 1.6 API.
801  */
802 SVN_DEPRECATED
803 svn_error_t *
804 svn_repos_recover3(const char *path,
805                    svn_boolean_t nonblocking,
806                    svn_error_t *(*start_callback)(void *baton),
807                    void *start_callback_baton,
808                    svn_cancel_func_t cancel_func,
809                    void * cancel_baton,
810                    apr_pool_t *pool);
811 
812 /**
813  * Similar to svn_repos_recover3(), but without cancellation support.
814  *
815  * @deprecated Provided for backward compatibility with the 1.4 API.
816  */
817 SVN_DEPRECATED
818 svn_error_t *
819 svn_repos_recover2(const char *path,
820                    svn_boolean_t nonblocking,
821                    svn_error_t *(*start_callback)(void *baton),
822                    void *start_callback_baton,
823                    apr_pool_t *pool);
824 
825 /**
826  * Similar to svn_repos_recover2(), but with nonblocking set to FALSE, and
827  * with no callbacks provided.
828  *
829  * @deprecated Provided for backward compatibility with the 1.0 API.
830  */
831 SVN_DEPRECATED
832 svn_error_t *
833 svn_repos_recover(const char *path,
834                   apr_pool_t *pool);
835 
836 /**
837  * Callback for svn_repos_freeze.
838  *
839  * @since New in 1.8.
840  */
841 typedef svn_error_t *(*svn_repos_freeze_func_t)(void *baton, apr_pool_t *pool);
842 
843 /**
844  * Take an exclusive lock on each of the repositories in @a paths to
845  * prevent commits and then while holding all the locks invoke @a
846  * freeze_func passing @a freeze_baton.  Each repository may be readable by
847  * Subversion while frozen, or may be unreadable, depending on which
848  * FS backend the repository uses.  Repositories are locked in the
849  * order in which they are specified in the array.
850  *
851  * @note @a freeze_func must not, directly or indirectly, call any function
852  * that attempts to take out a lock on the underlying repository.  These
853  * include functions for packing, hotcopying, setting revprops and commits.
854  * Attempts to do so may result in a deadlock.
855  *
856  * @note On some platforms the exclusive lock does not exclude other
857  * threads in the same process so this function should only be called
858  * by a single threaded process, or by a multi-threaded process when
859  * no other threads are accessing the repositories.
860  *
861  * @since New in 1.8.
862  */
863 svn_error_t *
864 svn_repos_freeze(const apr_array_header_t *paths,
865                  svn_repos_freeze_func_t freeze_func,
866                  void *freeze_baton,
867                  apr_pool_t *pool);
868 
869 /** This function is a wrapper around svn_fs_berkeley_logfiles(),
870  * returning log file paths relative to the root of the repository.
871  *
872  * @copydoc svn_fs_berkeley_logfiles()
873  */
874 svn_error_t *
875 svn_repos_db_logfiles(apr_array_header_t **logfiles,
876                       const char *path,
877                       svn_boolean_t only_unused,
878                       apr_pool_t *pool);
879 
880 
881 
882 /* Repository Paths */
883 
884 /** Return the top-level repository path allocated in @a pool. */
885 const char *
886 svn_repos_path(svn_repos_t *repos,
887                apr_pool_t *pool);
888 
889 /** Return the path to @a repos's filesystem directory, allocated in
890  * @a pool.
891  */
892 const char *
893 svn_repos_db_env(svn_repos_t *repos,
894                  apr_pool_t *pool);
895 
896 /** Return path to @a repos's config directory, allocated in @a pool. */
897 const char *
898 svn_repos_conf_dir(svn_repos_t *repos,
899                    apr_pool_t *pool);
900 
901 /** Return path to @a repos's svnserve.conf, allocated in @a pool. */
902 const char *
903 svn_repos_svnserve_conf(svn_repos_t *repos,
904                         apr_pool_t *pool);
905 
906 /** Return path to @a repos's lock directory, allocated in @a pool. */
907 const char *
908 svn_repos_lock_dir(svn_repos_t *repos,
909                    apr_pool_t *pool);
910 
911 /** Return path to @a repos's db lockfile, allocated in @a pool. */
912 const char *
913 svn_repos_db_lockfile(svn_repos_t *repos,
914                       apr_pool_t *pool);
915 
916 /** Return path to @a repos's db logs lockfile, allocated in @a pool. */
917 const char *
918 svn_repos_db_logs_lockfile(svn_repos_t *repos,
919                            apr_pool_t *pool);
920 
921 /** Return the path to @a repos's hook directory, allocated in @a pool. */
922 const char *
923 svn_repos_hook_dir(svn_repos_t *repos,
924                    apr_pool_t *pool);
925 
926 /** Return the path to @a repos's start-commit hook, allocated in @a pool. */
927 const char *
928 svn_repos_start_commit_hook(svn_repos_t *repos,
929                             apr_pool_t *pool);
930 
931 /** Return the path to @a repos's pre-commit hook, allocated in @a pool. */
932 const char *
933 svn_repos_pre_commit_hook(svn_repos_t *repos,
934                           apr_pool_t *pool);
935 
936 /** Return the path to @a repos's post-commit hook, allocated in @a pool. */
937 const char *
938 svn_repos_post_commit_hook(svn_repos_t *repos,
939                            apr_pool_t *pool);
940 
941 /** Return the path to @a repos's pre-revprop-change hook, allocated in
942  * @a pool.
943  */
944 const char *
945 svn_repos_pre_revprop_change_hook(svn_repos_t *repos,
946                                   apr_pool_t *pool);
947 
948 /** Return the path to @a repos's post-revprop-change hook, allocated in
949  * @a pool.
950  */
951 const char *
952 svn_repos_post_revprop_change_hook(svn_repos_t *repos,
953                                    apr_pool_t *pool);
954 
955 
956 /** @defgroup svn_repos_lock_hooks Paths to lock hooks
957  * @{
958  * @since New in 1.2. */
959 
960 /** Return the path to @a repos's pre-lock hook, allocated in @a pool. */
961 const char *
962 svn_repos_pre_lock_hook(svn_repos_t *repos,
963                         apr_pool_t *pool);
964 
965 /** Return the path to @a repos's post-lock hook, allocated in @a pool. */
966 const char *
967 svn_repos_post_lock_hook(svn_repos_t *repos,
968                          apr_pool_t *pool);
969 
970 /** Return the path to @a repos's pre-unlock hook, allocated in @a pool. */
971 const char *
972 svn_repos_pre_unlock_hook(svn_repos_t *repos,
973                           apr_pool_t *pool);
974 
975 /** Return the path to @a repos's post-unlock hook, allocated in @a pool. */
976 const char *
977 svn_repos_post_unlock_hook(svn_repos_t *repos,
978                            apr_pool_t *pool);
979 
980 /** Specify that Subversion should consult the configuration file
981  * located at @a hooks_env_path to determine how to setup the
982  * environment for hook scripts invoked for the repository @a repos.
983  * As a special case, if @a hooks_env_path is @c NULL, look for the
984  * file in its default location within the repository disk structure.
985  * If @a hooks_env_path is not absolute, it specifies a path relative
986  * to the parent of the file's default location.
987  *
988  * Use @a scratch_pool for temporary allocations.
989  *
990  * If this function is not called, or if the specified configuration
991  * file does not define any environment variables, hooks will run in
992  * an empty environment.
993  *
994  * @since New in 1.8.
995  */
996 svn_error_t *
997 svn_repos_hooks_setenv(svn_repos_t *repos,
998                        const char *hooks_env_path,
999                        apr_pool_t *scratch_pool);
1000 
1001 /** @} */
1002 
1003 /* ---------------------------------------------------------------*/
1004 
1005 /* Reporting the state of a working copy, for updates. */
1006 
1007 
1008 /**
1009  * Construct and return a @a report_baton that will be passed to the
1010  * other functions in this section to describe the state of a pre-existing
1011  * tree (typically, a working copy).  When the report is finished,
1012  * @a editor/@a edit_baton will be driven in such a way as to transform the
1013  * existing tree to @a revnum and, if @a tgt_path is non-NULL, switch the
1014  * reported hierarchy to @a tgt_path.
1015  *
1016  * @a fs_base is the absolute path of the node in the filesystem at which
1017  * the comparison should be rooted.  @a target is a single path component,
1018  * used to limit the scope of the report to a single entry of @a fs_base,
1019  * or "" if all of @a fs_base itself is the main subject of the report.
1020  *
1021  * @a tgt_path and @a revnum is the fs path/revision pair that is the
1022  * "target" of the delta.  @a tgt_path should be provided only when
1023  * the source and target paths of the report differ.  That is, @a tgt_path
1024  * should *only* be specified when specifying that the resultant editor
1025  * drive be one that transforms the reported hierarchy into a pristine tree
1026  * of @a tgt_path at revision @a revnum.  A @c NULL value for @a tgt_path
1027  * will indicate that the editor should be driven in such a way as to
1028  * transform the reported hierarchy to revision @a revnum, preserving the
1029  * reported hierarchy.
1030  *
1031  * @a text_deltas instructs the driver of the @a editor to enable
1032  * the generation of text deltas.
1033  *
1034  * @a ignore_ancestry instructs the driver to ignore node ancestry
1035  * when determining how to transmit differences.
1036  *
1037  * @a send_copyfrom_args instructs the driver to send 'copyfrom'
1038  * arguments to the editor's add_file() and add_directory() methods,
1039  * and therefore to send their content as deltas against the copy source,
1040  * whenever it deems feasible. The implementation only does so for
1041  * add_file(), and only when the file itself is the copy root (not when
1042  * the file is part of a copied subtree).
1043  *
1044  * Use @a authz_read_func and @a authz_read_baton (if not @c NULL) to
1045  * avoid sending data through @a editor/@a edit_baton which is not
1046  * authorized for transmission.
1047  *
1048  * @a zero_copy_limit controls the maximum size (in bytes) at which
1049  * data blocks may be sent using the zero-copy code path.  On that
1050  * path, a number of in-memory copy operations have been eliminated to
1051  * maximize throughput.  However, until the whole block has been
1052  * pushed to the network stack, other clients block, so be careful
1053  * when using larger values here.  Pass 0 for @a zero_copy_limit to
1054  * disable this optimization altogether.
1055  *
1056  * @note Never activate this optimization if @a editor might access
1057  * any FSFS data structures (and, hence, caches).  So, it is basically
1058  * safe for networked editors only.
1059  *
1060  * All allocation for the context and collected state will occur in
1061  * @a pool.
1062  *
1063  * @a depth is the requested depth of the editor drive.
1064  *
1065  * If @a depth is #svn_depth_unknown, the editor will affect only the
1066  * paths reported by the individual calls to svn_repos_set_path3() and
1067  * svn_repos_link_path3().
1068  *
1069  * For example, if the reported tree is the @c A subdir of the Greek Tree
1070  * (see Subversion's test suite), at depth #svn_depth_empty, but the
1071  * @c A/B subdir is reported at depth #svn_depth_infinity, then
1072  * repository-side changes to @c A/mu, or underneath @c A/C and @c
1073  * A/D, would not be reflected in the editor drive, but changes
1074  * underneath @c A/B would be.
1075  *
1076  * Additionally, the editor driver will call @c add_directory and
1077  * and @c add_file for directories with an appropriate depth.  For
1078  * example, a directory reported at #svn_depth_files will receive
1079  * file (but not directory) additions.  A directory at #svn_depth_empty
1080  * will receive neither.
1081  *
1082  * If @a depth is #svn_depth_files, #svn_depth_immediates or
1083  * #svn_depth_infinity and @a depth is greater than the reported depth
1084  * of the working copy, then the editor driver will emit editor
1085  * operations so as to upgrade the working copy to this depth.
1086  *
1087  * If @a depth is #svn_depth_empty, #svn_depth_files,
1088  * #svn_depth_immediates and @a depth is lower
1089  * than or equal to the depth of the working copy, then the editor
1090  * operations will affect only paths at or above @a depth.
1091  *
1092  * @since New in 1.8.
1093  */
1094 svn_error_t *
1095 svn_repos_begin_report3(void **report_baton,
1096                         svn_revnum_t revnum,
1097                         svn_repos_t *repos,
1098                         const char *fs_base,
1099                         const char *target,
1100                         const char *tgt_path,
1101                         svn_boolean_t text_deltas,
1102                         svn_depth_t depth,
1103                         svn_boolean_t ignore_ancestry,
1104                         svn_boolean_t send_copyfrom_args,
1105                         const svn_delta_editor_t *editor,
1106                         void *edit_baton,
1107                         svn_repos_authz_func_t authz_read_func,
1108                         void *authz_read_baton,
1109                         apr_size_t zero_copy_limit,
1110                         apr_pool_t *pool);
1111 
1112 /**
1113  * The same as svn_repos_begin_report3(), but with @a zero_copy_limit
1114  * always passed as 0.
1115  *
1116  * @since New in 1.5.
1117  * @deprecated Provided for backward compatibility with the 1.7 API.
1118  */
1119 SVN_DEPRECATED
1120 svn_error_t *
1121 svn_repos_begin_report2(void **report_baton,
1122                         svn_revnum_t revnum,
1123                         svn_repos_t *repos,
1124                         const char *fs_base,
1125                         const char *target,
1126                         const char *tgt_path,
1127                         svn_boolean_t text_deltas,
1128                         svn_depth_t depth,
1129                         svn_boolean_t ignore_ancestry,
1130                         svn_boolean_t send_copyfrom_args,
1131                         const svn_delta_editor_t *editor,
1132                         void *edit_baton,
1133                         svn_repos_authz_func_t authz_read_func,
1134                         void *authz_read_baton,
1135                         apr_pool_t *pool);
1136 
1137 /**
1138  * The same as svn_repos_begin_report2(), but taking a boolean
1139  * @a recurse flag, and sending FALSE for @a send_copyfrom_args.
1140  *
1141  * If @a recurse is TRUE, the editor driver will drive the editor with
1142  * a depth of #svn_depth_infinity; if FALSE, then with a depth of
1143  * #svn_depth_files.
1144  *
1145  * @note @a username is ignored, and has been removed in a revised
1146  * version of this API.
1147  *
1148  * @deprecated Provided for backward compatibility with the 1.4 API.
1149  */
1150 SVN_DEPRECATED
1151 svn_error_t *
1152 svn_repos_begin_report(void **report_baton,
1153                        svn_revnum_t revnum,
1154                        const char *username,
1155                        svn_repos_t *repos,
1156                        const char *fs_base,
1157                        const char *target,
1158                        const char *tgt_path,
1159                        svn_boolean_t text_deltas,
1160                        svn_boolean_t recurse,
1161                        svn_boolean_t ignore_ancestry,
1162                        const svn_delta_editor_t *editor,
1163                        void *edit_baton,
1164                        svn_repos_authz_func_t authz_read_func,
1165                        void *authz_read_baton,
1166                        apr_pool_t *pool);
1167 
1168 
1169 /**
1170  * Given a @a report_baton constructed by svn_repos_begin_report3(),
1171  * record the presence of @a path, at @a revision with depth @a depth,
1172  * in the current tree.
1173  *
1174  * @a path is relative to the anchor/target used in the creation of the
1175  * @a report_baton.
1176  *
1177  * @a revision may be SVN_INVALID_REVNUM if (for example) @a path
1178  * represents a locally-added path with no revision number, or @a
1179  * depth is #svn_depth_exclude.
1180  *
1181  * @a path may not be underneath a path on which svn_repos_set_path3()
1182  * was previously called with #svn_depth_exclude in this report.
1183  *
1184  * The first call of this in a given report usually passes an empty
1185  * @a path; this is used to set up the correct root revision for the editor
1186  * drive.
1187  *
1188  * A depth of #svn_depth_unknown is not allowed, and results in an
1189  * error.
1190  *
1191  * If @a start_empty is TRUE and @a path is a directory, then require the
1192  * caller to explicitly provide all the children of @a path - do not assume
1193  * that the tree also contains all the children of @a path at @a revision.
1194  * This is for 'low confidence' client reporting.
1195  *
1196  * If the caller has a lock token for @a path, then @a lock_token should
1197  * be set to that token.  Else, @a lock_token should be NULL.
1198  *
1199  * All temporary allocations are done in @a pool.
1200  *
1201  * @since New in 1.5.
1202  */
1203 svn_error_t *
1204 svn_repos_set_path3(void *report_baton,
1205                     const char *path,
1206                     svn_revnum_t revision,
1207                     svn_depth_t depth,
1208                     svn_boolean_t start_empty,
1209                     const char *lock_token,
1210                     apr_pool_t *pool);
1211 
1212 /**
1213  * Similar to svn_repos_set_path3(), but with @a depth set to
1214  * #svn_depth_infinity.
1215  *
1216  * @deprecated Provided for backward compatibility with the 1.4 API.
1217  */
1218 SVN_DEPRECATED
1219 svn_error_t *
1220 svn_repos_set_path2(void *report_baton,
1221                     const char *path,
1222                     svn_revnum_t revision,
1223                     svn_boolean_t start_empty,
1224                     const char *lock_token,
1225                     apr_pool_t *pool);
1226 
1227 /**
1228  * Similar to svn_repos_set_path2(), but with @a lock_token set to @c NULL.
1229  *
1230  * @deprecated Provided for backward compatibility with the 1.1 API.
1231  */
1232 SVN_DEPRECATED
1233 svn_error_t *
1234 svn_repos_set_path(void *report_baton,
1235                    const char *path,
1236                    svn_revnum_t revision,
1237                    svn_boolean_t start_empty,
1238                    apr_pool_t *pool);
1239 
1240 /**
1241  * Given a @a report_baton constructed by svn_repos_begin_report3(),
1242  * record the presence of @a path in the current tree, containing the contents
1243  * of @a link_path at @a revision with depth @a depth.
1244  *
1245  * A depth of #svn_depth_unknown is not allowed, and results in an
1246  * error.
1247  *
1248  * @a path may not be underneath a path on which svn_repos_set_path3()
1249  * was previously called with #svn_depth_exclude in this report.
1250  *
1251  * Note that while @a path is relative to the anchor/target used in the
1252  * creation of the @a report_baton, @a link_path is an absolute filesystem
1253  * path!
1254  *
1255  * If @a start_empty is TRUE and @a path is a directory, then require the
1256  * caller to explicitly provide all the children of @a path - do not assume
1257  * that the tree also contains all the children of @a link_path at
1258  * @a revision.  This is for 'low confidence' client reporting.
1259  *
1260  * If the caller has a lock token for @a link_path, then @a lock_token
1261  * should be set to that token.  Else, @a lock_token should be NULL.
1262  *
1263  * All temporary allocations are done in @a pool.
1264  *
1265  * @since New in 1.5.
1266  */
1267 svn_error_t *
1268 svn_repos_link_path3(void *report_baton,
1269                      const char *path,
1270                      const char *link_path,
1271                      svn_revnum_t revision,
1272                      svn_depth_t depth,
1273                      svn_boolean_t start_empty,
1274                      const char *lock_token,
1275                      apr_pool_t *pool);
1276 
1277 /**
1278  * Similar to svn_repos_link_path3(), but with @a depth set to
1279  * #svn_depth_infinity.
1280  *
1281  * @deprecated Provided for backward compatibility with the 1.4 API.
1282  */
1283 SVN_DEPRECATED
1284 svn_error_t *
1285 svn_repos_link_path2(void *report_baton,
1286                      const char *path,
1287                      const char *link_path,
1288                      svn_revnum_t revision,
1289                      svn_boolean_t start_empty,
1290                      const char *lock_token,
1291                      apr_pool_t *pool);
1292 
1293 /**
1294  * Similar to svn_repos_link_path2(), but with @a lock_token set to @c NULL.
1295  *
1296  * @deprecated Provided for backward compatibility with the 1.1 API.
1297  */
1298 SVN_DEPRECATED
1299 svn_error_t *
1300 svn_repos_link_path(void *report_baton,
1301                     const char *path,
1302                     const char *link_path,
1303                     svn_revnum_t revision,
1304                     svn_boolean_t start_empty,
1305                     apr_pool_t *pool);
1306 
1307 /** Given a @a report_baton constructed by svn_repos_begin_report3(),
1308  * record the non-existence of @a path in the current tree.
1309  *
1310  * @a path may not be underneath a path on which svn_repos_set_path3()
1311  * was previously called with #svn_depth_exclude in this report.
1312  *
1313  * (This allows the reporter's driver to describe missing pieces of a
1314  * working copy, so that 'svn up' can recreate them.)
1315  *
1316  * All temporary allocations are done in @a pool.
1317  */
1318 svn_error_t *
1319 svn_repos_delete_path(void *report_baton,
1320                       const char *path,
1321                       apr_pool_t *pool);
1322 
1323 /** Given a @a report_baton constructed by svn_repos_begin_report3(),
1324  * finish the report and drive the editor as specified when the report
1325  * baton was constructed.
1326  *
1327  * If an error occurs during the driving of the editor, do NOT abort the
1328  * edit; that responsibility belongs to the caller of this function, if
1329  * it happens at all.
1330  *
1331  * After the call to this function, @a report_baton is no longer valid;
1332  * it should not be passed to any other reporting functions, including
1333  * svn_repos_abort_report(), even if this function returns an error.
1334  */
1335 svn_error_t *
1336 svn_repos_finish_report(void *report_baton,
1337                         apr_pool_t *pool);
1338 
1339 
1340 /** Given a @a report_baton constructed by svn_repos_begin_report3(),
1341  * abort the report.  This function can be called anytime before
1342  * svn_repos_finish_report() is called.
1343  *
1344  * After the call to this function, @a report_baton is no longer valid;
1345  * it should not be passed to any other reporting functions.
1346  */
1347 svn_error_t *
1348 svn_repos_abort_report(void *report_baton,
1349                        apr_pool_t *pool);
1350 
1351 
1352 /* ---------------------------------------------------------------*/
1353 
1354 /* The magical dir_delta update routines. */
1355 
1356 /** Use the provided @a editor and @a edit_baton to describe the changes
1357  * necessary for making a given node (and its descendants, if it is a
1358  * directory) under @a src_root look exactly like @a tgt_path under
1359  * @a tgt_root.  @a src_entry is the node to update.  If @a src_entry
1360  * is empty, then compute the difference between the entire tree
1361  * anchored at @a src_parent_dir under @a src_root and @a tgt_path
1362  * under @a tgt_root.  Else, describe the changes needed to update
1363  * only that entry in @a src_parent_dir.  Typically, callers of this
1364  * function will use a @a tgt_path that is the concatenation of @a
1365  * src_parent_dir and @a src_entry.
1366  *
1367  * @a src_root and @a tgt_root can both be either revision or transaction
1368  * roots.  If @a tgt_root is a revision, @a editor's set_target_revision()
1369  * will be called with the @a tgt_root's revision number, else it will
1370  * not be called at all.
1371  *
1372  * If @a authz_read_func is non-NULL, invoke it before any call to
1373  *
1374  *    @a editor->open_root
1375  *    @a editor->add_directory
1376  *    @a editor->open_directory
1377  *    @a editor->add_file
1378  *    @a editor->open_file
1379  *
1380  * passing @a tgt_root, the same path that would be passed to the
1381  * editor function in question, and @a authz_read_baton.  If the
1382  * @a *allowed parameter comes back TRUE, then proceed with the planned
1383  * editor call; else if FALSE, then invoke @a editor->absent_file or
1384  * @a editor->absent_directory as appropriate, except if the planned
1385  * editor call was open_root, throw SVN_ERR_AUTHZ_ROOT_UNREADABLE.
1386  *
1387  * If @a text_deltas is @c FALSE, send a single @c NULL txdelta window to
1388  * the window handler returned by @a editor->apply_textdelta().
1389  *
1390  * If @a depth is #svn_depth_empty, invoke @a editor calls only on
1391  * @a src_entry (or @a src_parent_dir, if @a src_entry is empty).
1392  * If @a depth is #svn_depth_files, also invoke the editor on file
1393  * children, if any; if #svn_depth_immediates, invoke it on
1394  * immediate subdirectories as well as files; if #svn_depth_infinity,
1395  * recurse fully.
1396  *
1397  * If @a entry_props is @c TRUE, accompany each opened/added entry with
1398  * propchange editor calls that relay special "entry props" (this
1399  * is typically used only for working copy updates).
1400  *
1401  * @a ignore_ancestry instructs the function to ignore node ancestry
1402  * when determining how to transmit differences.
1403  *
1404  * Before completing successfully, this function calls @a editor's
1405  * close_edit(), so the caller should expect its @a edit_baton to be
1406  * invalid after its use with this function.
1407  *
1408  * Do any allocation necessary for the delta computation in @a pool.
1409  * This function's maximum memory consumption is at most roughly
1410  * proportional to the greatest depth of the tree under @a tgt_root, not
1411  * the total size of the delta.
1412  *
1413  * ### svn_repos_dir_delta2 is mostly superseded by the reporter
1414  * ### functionality (svn_repos_begin_report3 and friends).
1415  * ### svn_repos_dir_delta2 does allow the roots to be transaction
1416  * ### roots rather than just revision roots, and it has the
1417  * ### entry_props flag.  Almost all of Subversion's own code uses the
1418  * ### reporter instead; there are some stray references to the
1419  * ### svn_repos_dir_delta[2] in comments which should probably
1420  * ### actually refer to the reporter.
1421  *
1422  * @since New in 1.5.
1423  */
1424 svn_error_t *
1425 svn_repos_dir_delta2(svn_fs_root_t *src_root,
1426                      const char *src_parent_dir,
1427                      const char *src_entry,
1428                      svn_fs_root_t *tgt_root,
1429                      const char *tgt_path,
1430                      const svn_delta_editor_t *editor,
1431                      void *edit_baton,
1432                      svn_repos_authz_func_t authz_read_func,
1433                      void *authz_read_baton,
1434                      svn_boolean_t text_deltas,
1435                      svn_depth_t depth,
1436                      svn_boolean_t entry_props,
1437                      svn_boolean_t ignore_ancestry,
1438                      apr_pool_t *pool);
1439 
1440 /**
1441  * Similar to svn_repos_dir_delta2(), but if @a recurse is TRUE, pass
1442  * #svn_depth_infinity for @a depth, and if @a recurse is FALSE,
1443  * pass #svn_depth_files for @a depth.
1444  *
1445  * @deprecated Provided for backward compatibility with the 1.4 API.
1446  */
1447 SVN_DEPRECATED
1448 svn_error_t *
1449 svn_repos_dir_delta(svn_fs_root_t *src_root,
1450                     const char *src_parent_dir,
1451                     const char *src_entry,
1452                     svn_fs_root_t *tgt_root,
1453                     const char *tgt_path,
1454                     const svn_delta_editor_t *editor,
1455                     void *edit_baton,
1456                     svn_repos_authz_func_t authz_read_func,
1457                     void *authz_read_baton,
1458                     svn_boolean_t text_deltas,
1459                     svn_boolean_t recurse,
1460                     svn_boolean_t entry_props,
1461                     svn_boolean_t ignore_ancestry,
1462                     apr_pool_t *pool);
1463 
1464 
1465 /** Use the provided @a editor and @a edit_baton to describe the
1466  * skeletal changes made in a particular filesystem @a root
1467  * (revision or transaction).
1468  *
1469  * Changes will be limited to those within @a base_dir, and if
1470  * @a low_water_mark is set to something other than #SVN_INVALID_REVNUM
1471  * it is assumed that the client has no knowledge of revisions prior to
1472  * @a low_water_mark.  Together, these two arguments define the portion of
1473  * the tree that the client is assumed to have knowledge of, and thus any
1474  * copies of data from outside that part of the tree will be sent in their
1475  * entirety, not as simple copies or deltas against a previous version.
1476  *
1477  * The @a editor passed to this function should be aware of the fact
1478  * that, if @a send_deltas is FALSE, calls to its change_dir_prop(),
1479  * change_file_prop(), and apply_textdelta() functions will not
1480  * contain meaningful data, and merely serve as indications that
1481  * properties or textual contents were changed.
1482  *
1483  * If @a send_deltas is @c TRUE, the text and property deltas for changes
1484  * will be sent, otherwise NULL text deltas and empty prop changes will be
1485  * used.
1486  *
1487  * If @a authz_read_func is non-NULL, it will be used to determine if the
1488  * user has read access to the data being accessed.  Data that the user
1489  * cannot access will be skipped.
1490  *
1491  * @note This editor driver passes SVN_INVALID_REVNUM for all
1492  * revision parameters in the editor interface except the copyfrom
1493  * parameter of the add_file() and add_directory() editor functions.
1494  *
1495  * @since New in 1.4.
1496  */
1497 svn_error_t *
1498 svn_repos_replay2(svn_fs_root_t *root,
1499                   const char *base_dir,
1500                   svn_revnum_t low_water_mark,
1501                   svn_boolean_t send_deltas,
1502                   const svn_delta_editor_t *editor,
1503                   void *edit_baton,
1504                   svn_repos_authz_func_t authz_read_func,
1505                   void *authz_read_baton,
1506                   apr_pool_t *pool);
1507 
1508 /**
1509  * Similar to svn_repos_replay2(), but with @a base_dir set to @c "",
1510  * @a low_water_mark set to #SVN_INVALID_REVNUM, @a send_deltas
1511  * set to @c FALSE, and @a authz_read_func and @a authz_read_baton
1512  * set to @c NULL.
1513  *
1514  * @deprecated Provided for backward compatibility with the 1.3 API.
1515  */
1516 SVN_DEPRECATED
1517 svn_error_t *
1518 svn_repos_replay(svn_fs_root_t *root,
1519                  const svn_delta_editor_t *editor,
1520                  void *edit_baton,
1521                  apr_pool_t *pool);
1522 
1523 /* ---------------------------------------------------------------*/
1524 
1525 /* Making commits. */
1526 
1527 /**
1528  * Return an @a editor and @a edit_baton to commit changes to the
1529  * filesystem of @a repos, beginning at location 'rev:@a base_path',
1530  * where "rev" is the argument given to open_root().
1531  *
1532  * @a repos is a previously opened repository.  @a repos_url_decoded is the
1533  * decoded URL to the base of the repository, and is used to check
1534  * copyfrom paths.  @a txn is a filesystem transaction object to use
1535  * during the commit, or @c NULL to indicate that this function should
1536  * create (and fully manage) a new transaction.
1537  *
1538  * Store the contents of @a revprop_table, a hash mapping <tt>const
1539  * char *</tt> property names to #svn_string_t values, as properties
1540  * of the commit transaction, including author and log message if
1541  * present.
1542  *
1543  * @note #SVN_PROP_REVISION_DATE may be present in @a revprop_table, but
1544  * it will be overwritten when the transaction is committed.
1545  *
1546  * Iff @a authz_callback is provided, check read/write authorizations
1547  * on paths accessed by editor operations.  An operation which fails
1548  * due to authz will return SVN_ERR_AUTHZ_UNREADABLE or
1549  * SVN_ERR_AUTHZ_UNWRITABLE.
1550  *
1551  * Calling @a (*editor)->close_edit completes the commit.
1552  *
1553  * If @a commit_callback is non-NULL, then before @c close_edit returns (but
1554  * after the commit has succeeded) @c close_edit will invoke
1555  * @a commit_callback with a filled-in #svn_commit_info_t *, @a commit_baton,
1556  * and @a pool or some subpool thereof as arguments.  The @c repos_root field
1557  * of the #svn_commit_info_t is @c NULL.  If @a commit_callback
1558  * returns an error, that error will be returned from @c close_edit,
1559  * otherwise if there was a post-commit hook failure, then that error
1560  * will be returned with code SVN_ERR_REPOS_POST_COMMIT_HOOK_FAILED.
1561  * (Note that prior to Subversion 1.6, @a commit_callback cannot be @c NULL;
1562  * if you don't need a callback, pass a dummy function.)
1563  *
1564  * Calling @a (*editor)->abort_edit aborts the commit, and will also
1565  * abort the commit transaction unless @a txn was supplied (not @c
1566  * NULL).  Callers who supply their own transactions are responsible
1567  * for cleaning them up (either by committing them, or aborting them).
1568  *
1569  * @since New in 1.5. Since 1.6, @a commit_callback can be @c NULL.
1570  *
1571  * @note Yes, @a repos_url_decoded is a <em>decoded</em> URL.  We realize
1572  * that's sorta wonky.  Sorry about that.
1573  *
1574  * @note Like most commit editors, the returned editor requires that the
1575  * @c copyfrom_path parameter passed to its @c add_file and @c add_directory
1576  * methods is a full, URI-encoded URL, not a relative path.
1577  */
1578 svn_error_t *
1579 svn_repos_get_commit_editor5(const svn_delta_editor_t **editor,
1580                              void **edit_baton,
1581                              svn_repos_t *repos,
1582                              svn_fs_txn_t *txn,
1583                              const char *repos_url_decoded,
1584                              const char *base_path,
1585                              apr_hash_t *revprop_table,
1586                              svn_commit_callback2_t commit_callback,
1587                              void *commit_baton,
1588                              svn_repos_authz_callback_t authz_callback,
1589                              void *authz_baton,
1590                              apr_pool_t *pool);
1591 
1592 /**
1593  * Similar to svn_repos_get_commit_editor5(), but with @a revprop_table
1594  * set to a hash containing @a user and @a log_msg as the
1595  * #SVN_PROP_REVISION_AUTHOR and #SVN_PROP_REVISION_LOG properties,
1596  * respectively.  @a user and @a log_msg may both be @c NULL.
1597  *
1598  * @since New in 1.4.
1599  *
1600  * @deprecated Provided for backward compatibility with the 1.4 API.
1601  */
1602 SVN_DEPRECATED
1603 svn_error_t *
1604 svn_repos_get_commit_editor4(const svn_delta_editor_t **editor,
1605                              void **edit_baton,
1606                              svn_repos_t *repos,
1607                              svn_fs_txn_t *txn,
1608                              const char *repos_url,
1609                              const char *base_path,
1610                              const char *user,
1611                              const char *log_msg,
1612                              svn_commit_callback2_t commit_callback,
1613                              void *commit_baton,
1614                              svn_repos_authz_callback_t authz_callback,
1615                              void *authz_baton,
1616                              apr_pool_t *pool);
1617 
1618 /**
1619  * Similar to svn_repos_get_commit_editor4(), but
1620  * uses the svn_commit_callback_t type.
1621  *
1622  * @since New in 1.3.
1623  *
1624  * @deprecated Provided for backward compatibility with the 1.3 API.
1625  */
1626 SVN_DEPRECATED
1627 svn_error_t *
1628 svn_repos_get_commit_editor3(const svn_delta_editor_t **editor,
1629                              void **edit_baton,
1630                              svn_repos_t *repos,
1631                              svn_fs_txn_t *txn,
1632                              const char *repos_url,
1633                              const char *base_path,
1634                              const char *user,
1635                              const char *log_msg,
1636                              svn_commit_callback_t callback,
1637                              void *callback_baton,
1638                              svn_repos_authz_callback_t authz_callback,
1639                              void *authz_baton,
1640                              apr_pool_t *pool);
1641 
1642 /**
1643  * Similar to svn_repos_get_commit_editor3(), but with @a
1644  * authz_callback and @a authz_baton set to @c NULL.
1645  *
1646  * @deprecated Provided for backward compatibility with the 1.2 API.
1647  */
1648 SVN_DEPRECATED
1649 svn_error_t *
1650 svn_repos_get_commit_editor2(const svn_delta_editor_t **editor,
1651                              void **edit_baton,
1652                              svn_repos_t *repos,
1653                              svn_fs_txn_t *txn,
1654                              const char *repos_url,
1655                              const char *base_path,
1656                              const char *user,
1657                              const char *log_msg,
1658                              svn_commit_callback_t callback,
1659                              void *callback_baton,
1660                              apr_pool_t *pool);
1661 
1662 
1663 /**
1664  * Similar to svn_repos_get_commit_editor2(), but with @a txn always
1665  * set to @c NULL.
1666  *
1667  * @deprecated Provided for backward compatibility with the 1.1 API.
1668  */
1669 SVN_DEPRECATED
1670 svn_error_t *
1671 svn_repos_get_commit_editor(const svn_delta_editor_t **editor,
1672                             void **edit_baton,
1673                             svn_repos_t *repos,
1674                             const char *repos_url,
1675                             const char *base_path,
1676                             const char *user,
1677                             const char *log_msg,
1678                             svn_commit_callback_t callback,
1679                             void *callback_baton,
1680                             apr_pool_t *pool);
1681 
1682 /* ---------------------------------------------------------------*/
1683 
1684 /* Finding particular revisions. */
1685 
1686 /** Set @a *revision to the revision number in @a repos's filesystem that was
1687  * youngest at time @a tm.
1688  */
1689 svn_error_t *
1690 svn_repos_dated_revision(svn_revnum_t *revision,
1691                          svn_repos_t *repos,
1692                          apr_time_t tm,
1693                          apr_pool_t *pool);
1694 
1695 
1696 /** Given a @a root/@a path within some filesystem, return three pieces of
1697  * information allocated in @a pool:
1698  *
1699  *    - set @a *committed_rev to the revision in which the object was
1700  *      last modified.  (In fs parlance, this is the revision in which
1701  *      the particular node-rev-id was 'created'.)
1702  *
1703  *    - set @a *committed_date to the date of said revision, or @c NULL
1704  *      if not available.
1705  *
1706  *    - set @a *last_author to the author of said revision, or @c NULL
1707  *      if not available.
1708  */
1709 svn_error_t *
1710 svn_repos_get_committed_info(svn_revnum_t *committed_rev,
1711                              const char **committed_date,
1712                              const char **last_author,
1713                              svn_fs_root_t *root,
1714                              const char *path,
1715                              apr_pool_t *pool);
1716 
1717 
1718 /**
1719  * Set @a *dirent to an #svn_dirent_t associated with @a path in @a
1720  * root.  If @a path does not exist in @a root, set @a *dirent to
1721  * NULL.  Use @a pool for memory allocation.
1722  *
1723  * @since New in 1.2.
1724  */
1725 svn_error_t *
1726 svn_repos_stat(svn_dirent_t **dirent,
1727                svn_fs_root_t *root,
1728                const char *path,
1729                apr_pool_t *pool);
1730 
1731 /**
1732  * Callback type to be used with svn_repos_list().  It will be invoked for
1733  * every directory entry found.
1734  *
1735  * The full path of the entry is given in @a path and @a dirent contains
1736  * various additional information.  If svn_repos_list() has been called
1737  * with @a path_info_only set, only the @a kind element of this struct
1738  * will be valid.
1739  *
1740  * @a baton is the user-provided receiver baton.  @a scratch_pool may be
1741  * used for temporary allocations.
1742  *
1743  * @since New in 1.10.
1744  */
1745 typedef svn_error_t *(* svn_repos_dirent_receiver_t)(const char *path,
1746                                                      svn_dirent_t *dirent,
1747                                                      void *baton,
1748                                                      apr_pool_t *scratch_pool);
1749 
1750 /**
1751  * Efficiently list everything within a sub-tree.  Specify glob patterns
1752  * to search for specific files and folders.
1753  *
1754  * Walk the sub-tree starting at @a path under @a root up to the given
1755  * @a depth.  For each directory entry found, @a receiver will be called
1756  * with @a receiver_baton.  The starting @a path will be reported as well.
1757  * Because retrieving all elements of a #svn_dirent_t can be expensive,
1758  * you may set @a path_info_only to receive only the path name and the node
1759  * kind.  The entries will be reported ordered by their path.
1760  *
1761  * @a patterns is an optional array of <tt>const char *</tt>.  If it is
1762  * not @c NULL, only those directory entries will be reported whose last
1763  * path segment matches at least one of these patterns.  This feature uses
1764  * apr_fnmatch() for glob matching and requiring '.' to matched by dots
1765  * in the path.
1766  *
1767  * If @a authz_read_func is not @c NULL, this function will neither report
1768  * entries nor recurse into directories that the user has no access to.
1769  *
1770  * Cancellation support is provided in the usual way through the optional
1771  * @a cancel_func and @a cancel_baton.
1772  *
1773  * @a path must point to a directory and @a depth must be at least
1774  * #svn_depth_empty.
1775  *
1776  * Use @a scratch_pool for temporary memory allocation.
1777  *
1778  * @since New in 1.10.
1779  */
1780 svn_error_t *
1781 svn_repos_list(svn_fs_root_t *root,
1782                const char *path,
1783                const apr_array_header_t *patterns,
1784                svn_depth_t depth,
1785                svn_boolean_t path_info_only,
1786                svn_repos_authz_func_t authz_read_func,
1787                void *authz_read_baton,
1788                svn_repos_dirent_receiver_t receiver,
1789                void *receiver_baton,
1790                svn_cancel_func_t cancel_func,
1791                void *cancel_baton,
1792                apr_pool_t *scratch_pool);
1793 
1794 /**
1795  * Given @a path which exists at revision @a start in @a fs, set
1796  * @a *deleted to the revision @a path was first deleted, within the
1797  * inclusive revision range bounded by @a start and @a end.  If @a path
1798  * does not exist at revision @a start or was not deleted within the
1799  * specified range, then set @a *deleted to SVN_INVALID_REVNUM.
1800  * Use @a pool for memory allocation.
1801  *
1802  * @since New in 1.5.
1803  */
1804 svn_error_t *
1805 svn_repos_deleted_rev(svn_fs_t *fs,
1806                       const char *path,
1807                       svn_revnum_t start,
1808                       svn_revnum_t end,
1809                       svn_revnum_t *deleted,
1810                       apr_pool_t *pool);
1811 
1812 
1813 /** Callback type for use with svn_repos_history().  @a path and @a
1814  * revision represent interesting history locations in the lifetime
1815  * of the path passed to svn_repos_history().  @a baton is the same
1816  * baton given to svn_repos_history().  @a pool is provided for the
1817  * convenience of the implementor, who should not expect it to live
1818  * longer than a single callback call.
1819  *
1820  * Signal to callback driver to stop processing/invoking this callback
1821  * by returning the #SVN_ERR_CEASE_INVOCATION error code.
1822  *
1823  * @note SVN_ERR_CEASE_INVOCATION is new in 1.5.
1824  */
1825 typedef svn_error_t *(*svn_repos_history_func_t)(void *baton,
1826                                                  const char *path,
1827                                                  svn_revnum_t revision,
1828                                                  apr_pool_t *pool);
1829 
1830 /**
1831  * Call @a history_func (with @a history_baton) for each interesting
1832  * history location in the lifetime of @a path in @a fs, from the
1833  * youngest of @a end and @a start to the oldest.  Stop processing if
1834  * @a history_func returns #SVN_ERR_CEASE_INVOCATION.  Only cross
1835  * filesystem copy history if @a cross_copies is @c TRUE.  And do all
1836  * of this in @a pool.
1837  *
1838  * If @a authz_read_func is non-NULL, then use it (and @a
1839  * authz_read_baton) to verify that @a path in @a end is readable; if
1840  * not, return SVN_ERR_AUTHZ_UNREADABLE.  Also verify the readability
1841  * of every ancestral path/revision pair before pushing them at @a
1842  * history_func.  If a pair is deemed unreadable, then do not send
1843  * them; instead, immediately stop traversing history and return
1844  * SVN_NO_ERROR.
1845  *
1846  * @since New in 1.1.
1847  *
1848  * @note SVN_ERR_CEASE_INVOCATION is new in 1.5.
1849  */
1850 svn_error_t *
1851 svn_repos_history2(svn_fs_t *fs,
1852                    const char *path,
1853                    svn_repos_history_func_t history_func,
1854                    void *history_baton,
1855                    svn_repos_authz_func_t authz_read_func,
1856                    void *authz_read_baton,
1857                    svn_revnum_t start,
1858                    svn_revnum_t end,
1859                    svn_boolean_t cross_copies,
1860                    apr_pool_t *pool);
1861 
1862 /**
1863  * Similar to svn_repos_history2(), but with @a authz_read_func
1864  * and @a authz_read_baton always set to NULL.
1865  *
1866  * @deprecated Provided for backward compatibility with the 1.0 API.
1867  */
1868 SVN_DEPRECATED
1869 svn_error_t *
1870 svn_repos_history(svn_fs_t *fs,
1871                   const char *path,
1872                   svn_repos_history_func_t history_func,
1873                   void *history_baton,
1874                   svn_revnum_t start,
1875                   svn_revnum_t end,
1876                   svn_boolean_t cross_copies,
1877                   apr_pool_t *pool);
1878 
1879 
1880 /**
1881  * Set @a *locations to be a mapping of the revisions to the paths of
1882  * the file @a fs_path present at the repository in revision
1883  * @a peg_revision, where the revisions are taken out of the array
1884  * @a location_revisions.
1885  *
1886  * @a location_revisions is an array of svn_revnum_t's and @a *locations
1887  * maps 'svn_revnum_t *' to 'const char *'.
1888  *
1889  * If optional @a authz_read_func is non-NULL, then use it (and @a
1890  * authz_read_baton) to verify that the peg-object is readable.  If not,
1891  * return SVN_ERR_AUTHZ_UNREADABLE.  Also use the @a authz_read_func
1892  * to check that every path returned in the hash is readable.  If an
1893  * unreadable path is encountered, stop tracing and return
1894  * SVN_NO_ERROR.
1895  *
1896  * @a pool is used for all allocations.
1897  *
1898  * @since New in 1.1.
1899  */
1900 svn_error_t *
1901 svn_repos_trace_node_locations(svn_fs_t *fs,
1902                                apr_hash_t **locations,
1903                                const char *fs_path,
1904                                svn_revnum_t peg_revision,
1905                                const apr_array_header_t *location_revisions,
1906                                svn_repos_authz_func_t authz_read_func,
1907                                void *authz_read_baton,
1908                                apr_pool_t *pool);
1909 
1910 
1911 /**
1912  * Call @a receiver and @a receiver_baton to report successive
1913  * location segments in revisions between @a start_rev and @a end_rev
1914  * (inclusive) for the line of history identified by the peg-object @a
1915  * path in @a peg_revision (and in @a repos).
1916  *
1917  * @a end_rev may be #SVN_INVALID_REVNUM to indicate that you want
1918  * to trace the history of the object to its origin.
1919  *
1920  * @a start_rev may be #SVN_INVALID_REVNUM to indicate "the HEAD
1921  * revision".  Otherwise, @a start_rev must be younger than @a end_rev
1922  * (unless @a end_rev is #SVN_INVALID_REVNUM).
1923  *
1924  * @a peg_revision may be #SVN_INVALID_REVNUM to indicate "the HEAD
1925  * revision", and must evaluate to be at least as young as @a start_rev.
1926  *
1927  * If optional @a authz_read_func is not @c NULL, then use it (and @a
1928  * authz_read_baton) to verify that the peg-object is readable.  If
1929  * not, return #SVN_ERR_AUTHZ_UNREADABLE.  Also use the @a
1930  * authz_read_func to check that every path reported in a location
1931  * segment is readable.  If an unreadable path is encountered, report
1932  * a final (possibly truncated) location segment (if any), stop
1933  * tracing history, and return #SVN_NO_ERROR.
1934  *
1935  * @a pool is used for all allocations.
1936  *
1937  * @since New in 1.5.
1938  */
1939 svn_error_t *
1940 svn_repos_node_location_segments(svn_repos_t *repos,
1941                                  const char *path,
1942                                  svn_revnum_t peg_revision,
1943                                  svn_revnum_t start_rev,
1944                                  svn_revnum_t end_rev,
1945                                  svn_location_segment_receiver_t receiver,
1946                                  void *receiver_baton,
1947                                  svn_repos_authz_func_t authz_read_func,
1948                                  void *authz_read_baton,
1949                                  apr_pool_t *pool);
1950 
1951 
1952 /* ---------------------------------------------------------------*/
1953 
1954 /* Retrieving log messages. */
1955 
1956 /** Path change descriptor.
1957  *
1958  * @note Identical to #svn_fs_path_change3_t but with all information
1959  *       known, i.e. @a node_kind is never #svn_node_unknown and
1960  *       @a copyfrom_known is always @c TRUE.
1961  *
1962  * @note To allow for extending this structure in future releases,
1963  * always use svn_repos_path_change_create() to allocate the stucture.
1964  *
1965  * @see svn_fs_path_change3_t
1966  *
1967  * @since New in 1.10.
1968  */
1969 typedef svn_fs_path_change3_t svn_repos_path_change_t;
1970 
1971 /**
1972  * Return an #svn_repos_path_change_t structure, allocated in @a result_pool,
1973  * with all fields initialized to their respective null/none/empty/invalid
1974  * values.
1975  *
1976  * @note To allow for extending the #svn_repos_path_change_t structure in
1977  * future releases, this function should always be used to allocate it.
1978  *
1979  * @since New in 1.10.
1980  */
1981 svn_repos_path_change_t *
1982 svn_repos_path_change_create(apr_pool_t *result_pool);
1983 
1984 /**
1985  * Return a deep copy of @a change, allocated in @a result_pool.
1986  *
1987  * @since New in 1.10.
1988  */
1989 svn_repos_path_change_t *
1990 svn_repos_path_change_dup(svn_repos_path_change_t *change,
1991                           apr_pool_t *result_pool);
1992 
1993 /** The callback invoked by log message loopers, such as
1994  * svn_repos_get_logs5().
1995  *
1996  * This function is invoked once on each changed path, in a potentially
1997  * random order that may even change between invocations for the same
1998  * revisions.
1999  *
2000  * @a baton is what you think it is, and @a change contains relevant
2001  * information for the changed path.  Please note that @a change may be
2002  * modified within this callback but it will become invalid as soon as
2003  * the callback returns.
2004  *
2005  * Use @a scratch_pool for temporary allocation.  The caller may clear it
2006  * between or after invocations.
2007  *
2008  * @since New in 1.10.
2009  */
2010 typedef svn_error_t *(*svn_repos_path_change_receiver_t)(
2011   void *baton,
2012   svn_repos_path_change_t *change,
2013   apr_pool_t *scratch_pool);
2014 
2015 
2016 /**
2017  * A structure to represent all the information about a particular log entry.
2018  *
2019  * @note To allow for extending this structure in future releases,
2020  * always use svn_repos_log_entry_create() to allocate the stucture.
2021  *
2022  * @since New in 1.10.
2023  */
2024 typedef struct svn_repos_log_entry_t
2025 {
2026   /** The revision of the commit. */
2027   svn_revnum_t revision;
2028 
2029   /** The hash of requested revision properties, which may be NULL if it
2030    * would contain no revprops.  Maps (const char *) property name to
2031    * (svn_string_t *) property value. */
2032   apr_hash_t *revprops;
2033 
2034   /**
2035    * Whether or not this message has children.
2036    *
2037    * When a log operation requests additional merge information, extra log
2038    * entries may be returned as a result of this entry.  The new entries, are
2039    * considered children of the original entry, and will follow it.  When
2040    * the HAS_CHILDREN flag is set, the receiver should increment its stack
2041    * depth, and wait until an entry is provided with SVN_INVALID_REVNUM which
2042    * indicates the end of the children.
2043    *
2044    * For log operations which do not request additional merge information, the
2045    * HAS_CHILDREN flag is always FALSE.
2046    *
2047    * For more information see:
2048    * https://svn.apache.org/repos/asf/subversion/trunk/notes/merge-tracking/design.html#commutative-reporting
2049    */
2050   svn_boolean_t has_children;
2051 
2052   /**
2053    * Whether @a revision should be interpreted as non-inheritable in the
2054    * same sense of #svn_merge_range_t.
2055    *
2056    * Currently always FALSE.
2057    */
2058   svn_boolean_t non_inheritable;
2059 
2060   /**
2061    * Whether @a revision is a merged revision resulting from a reverse merge.
2062    */
2063   svn_boolean_t subtractive_merge;
2064 
2065   /* NOTE: Add new fields at the end to preserve binary compatibility. */
2066 } svn_repos_log_entry_t;
2067 
2068 /**
2069  * Return an #svn_repos_log_entry_t, allocated in @a result_pool,
2070  * with all fields initialized to their respective null/none/empty/invalid
2071  * values.
2072  *
2073  * @note To allow for extending the #svn_repos_log_entry_t structure in
2074  * future releases, this function should always be used to allocate it.
2075  *
2076  * @since New in 1.10.
2077  */
2078 svn_repos_log_entry_t *
2079 svn_repos_log_entry_create(apr_pool_t *result_pool);
2080 
2081 /** Return a deep copy of @a log_entry, allocated in @a result_pool.
2082  *
2083  * @since New in 1.10.
2084  */
2085 svn_repos_log_entry_t *
2086 svn_repos_log_entry_dup(const svn_repos_log_entry_t *log_entry,
2087                         apr_pool_t *result_pool);
2088 
2089 
2090 /** The callback invoked by log message loopers, such as
2091  * svn_repos_get_logs5().
2092  *
2093  * This function is invoked once on each log message, in the order
2094  * determined by the caller (see above-mentioned functions).
2095  *
2096  * @a baton is what you think it is, and @a log_entry contains relevant
2097  * information for the log message.
2098  *
2099  * If @a log_entry->has_children is @c TRUE, the message will be followed
2100  * immediately by any number of merged revisions (child messages), which are
2101  * terminated by an invocation with SVN_INVALID_REVNUM.  This usage may
2102  * be recursive.
2103  *
2104  * Use @a scratch_pool for temporary allocation.  The caller may clear it
2105  * between or after invocations.
2106  *
2107  * @since New in 1.10.
2108  */
2109 typedef svn_error_t *(*svn_repos_log_entry_receiver_t)(
2110   void *baton,
2111   svn_repos_log_entry_t *log_entry,
2112   apr_pool_t *scratch_pool);
2113 
2114 
2115 /**
2116  * Invoke @a revision_receiver with @a revision_receiver_baton on each
2117  * revision from @a start to @a end in @a repos's filesystem.  @a start may
2118  * be greater or less than @a end; this just controls whether the log is
2119  * processed in descending or ascending revision number order.
2120  *
2121  * If not @c NULL, @a path_change_receiver will be invoked with
2122  * @a path_change_receiver_baton for each changed path in the respective
2123  * revision.  These changes will be reported before the @a revision_receiver
2124  * is invoked for that revision.  So, for each revision in the log, there
2125  * is a number of calls to @a path_change_receiver followed by a single
2126  * invocation of @a revision_receiver, implicitly marking the end of the
2127  * changes list for that revision.  If a revision does not contain any
2128  * changes (or if none are visible due to @a authz_read_func),
2129  * @a path_change_receiver will not be called for that revision.
2130  *
2131  * If @a start or @a end is #SVN_INVALID_REVNUM, it defaults to youngest.
2132  *
2133  * If @a paths is non-NULL and has one or more elements, then only show
2134  * revisions in which at least one of @a paths was changed (i.e., if
2135  * file, text or props changed; if dir, props or entries changed or any node
2136  * changed below it).  Each path is a <tt>const char *</tt> representing
2137  * an absolute path in the repository.  If @a paths is NULL or empty,
2138  * show all revisions regardless of what paths were changed in those
2139  * revisions.
2140  *
2141  * If @a limit is greater than zero then only invoke @a revision_receiver
2142  * on the first @a limit logs.
2143  *
2144  * If @a strict_node_history is set, copy history (if any exists) will
2145  * not be traversed while harvesting revision logs for each path.
2146  *
2147  * If @a include_merged_revisions is set, log information for revisions
2148  * which have been merged to @a paths will also be returned, unless these
2149  * revisions are already part of @a start to @a end in @a repos's
2150  * filesystem, as limited by @a paths. In the latter case those revisions
2151  * are skipped and @a receiver is not invoked.
2152  *
2153  * If @a revprops is NULL, retrieve all revision properties; else, retrieve
2154  * only the revision properties named by the (const char *) array elements
2155  * (i.e. retrieve none if the array is empty).
2156  *
2157  * If any invocation of @a revision_receiver or @a path_change_receiver
2158  * returnn an error, return that error immediately and without wrapping it.
2159  *
2160  * If @a start or @a end is a non-existent revision, return the error
2161  * #SVN_ERR_FS_NO_SUCH_REVISION, without ever invoking @a revision_receiver.
2162  *
2163  * If optional @a authz_read_func is non-NULL, then use this function
2164  * (along with optional @a authz_read_baton) to check the readability
2165  * of each changed-path in each revision about to be "pushed" at
2166  * @a path_change_receiver.  If a revision has some changed-paths readable
2167  * and others unreadable, unreadable paths are omitted from the
2168  * @a path_change_receiver invocations and only svn:author and svn:date
2169  * will be available in the revprops field in the @a revision_receiver
2170  * callback.  If a revision has no changed-paths readable at all, then all
2171  * paths are omitted and no revprops are available.  If
2172  * @a path_change_receiver is @c NULL, the same filtering is performed
2173  * just without reporting any path changes.
2174  *
2175  * Use @a scratch_pool for temporary allocations.
2176  *
2177  * @see svn_repos_path_change_receiver_t, svn_repos_log_entry_receiver_t
2178  *
2179  * @since New in 1.10.
2180  */
2181 svn_error_t *
2182 svn_repos_get_logs5(svn_repos_t *repos,
2183                     const apr_array_header_t *paths,
2184                     svn_revnum_t start,
2185                     svn_revnum_t end,
2186                     int limit,
2187                     svn_boolean_t strict_node_history,
2188                     svn_boolean_t include_merged_revisions,
2189                     const apr_array_header_t *revprops,
2190                     svn_repos_authz_func_t authz_read_func,
2191                     void *authz_read_baton,
2192                     svn_repos_path_change_receiver_t path_change_receiver,
2193                     void *path_change_receiver_baton,
2194                     svn_repos_log_entry_receiver_t revision_receiver,
2195                     void *revision_receiver_baton,
2196                     apr_pool_t *scratch_pool);
2197 
2198 /**
2199  * Similar to svn_repos_get_logs5 but using a #svn_log_entry_receiver_t
2200  * @a receiver to receive revision properties and changed paths through a
2201  * single callback and the @a discover_changed_paths flag to control it.
2202  *
2203  * If @a discover_changed_paths, then each call to @a receiver passes a
2204  * hash mapping paths committed in that revision to information about them
2205  * as the receiver's @a changed_paths argument.
2206  * Otherwise, each call to @a receiver passes NULL for @a changed_paths.
2207  *
2208  * @see svn_log_entry_receiver_t
2209  *
2210  * @since New in 1.5.
2211  *
2212  * @deprecated Provided for backward compatibility with the 1.9 API.
2213  */
2214 SVN_DEPRECATED
2215 svn_error_t *
2216 svn_repos_get_logs4(svn_repos_t *repos,
2217                     const apr_array_header_t *paths,
2218                     svn_revnum_t start,
2219                     svn_revnum_t end,
2220                     int limit,
2221                     svn_boolean_t discover_changed_paths,
2222                     svn_boolean_t strict_node_history,
2223                     svn_boolean_t include_merged_revisions,
2224                     const apr_array_header_t *revprops,
2225                     svn_repos_authz_func_t authz_read_func,
2226                     void *authz_read_baton,
2227                     svn_log_entry_receiver_t receiver,
2228                     void *receiver_baton,
2229                     apr_pool_t *pool);
2230 
2231 /**
2232  * Same as svn_repos_get_logs4(), but with @a receiver being
2233  * #svn_log_message_receiver_t instead of #svn_log_entry_receiver_t.
2234  * Also, @a include_merged_revisions is set to @c FALSE and @a revprops is
2235  * svn:author, svn:date, and svn:log.  If @a paths is empty, nothing
2236  * is returned.
2237  *
2238  * @since New in 1.2.
2239  * @deprecated Provided for backward compatibility with the 1.4 API.
2240  */
2241 SVN_DEPRECATED
2242 svn_error_t *
2243 svn_repos_get_logs3(svn_repos_t *repos,
2244                     const apr_array_header_t *paths,
2245                     svn_revnum_t start,
2246                     svn_revnum_t end,
2247                     int limit,
2248                     svn_boolean_t discover_changed_paths,
2249                     svn_boolean_t strict_node_history,
2250                     svn_repos_authz_func_t authz_read_func,
2251                     void *authz_read_baton,
2252                     svn_log_message_receiver_t receiver,
2253                     void *receiver_baton,
2254                     apr_pool_t *pool);
2255 
2256 
2257 /**
2258  * Same as svn_repos_get_logs3(), but with @a limit always set to 0.
2259  *
2260  * @deprecated Provided for backward compatibility with the 1.1 API.
2261  */
2262 SVN_DEPRECATED
2263 svn_error_t *
2264 svn_repos_get_logs2(svn_repos_t *repos,
2265                     const apr_array_header_t *paths,
2266                     svn_revnum_t start,
2267                     svn_revnum_t end,
2268                     svn_boolean_t discover_changed_paths,
2269                     svn_boolean_t strict_node_history,
2270                     svn_repos_authz_func_t authz_read_func,
2271                     void *authz_read_baton,
2272                     svn_log_message_receiver_t receiver,
2273                     void *receiver_baton,
2274                     apr_pool_t *pool);
2275 
2276 /**
2277  * Same as svn_repos_get_logs2(), but with @a authz_read_func and
2278  * @a authz_read_baton always set to NULL.
2279  *
2280  * @deprecated Provided for backward compatibility with the 1.0 API.
2281  */
2282 SVN_DEPRECATED
2283 svn_error_t *
2284 svn_repos_get_logs(svn_repos_t *repos,
2285                    const apr_array_header_t *paths,
2286                    svn_revnum_t start,
2287                    svn_revnum_t end,
2288                    svn_boolean_t discover_changed_paths,
2289                    svn_boolean_t strict_node_history,
2290                    svn_log_message_receiver_t receiver,
2291                    void *receiver_baton,
2292                    apr_pool_t *pool);
2293 
2294 
2295 
2296 /* ---------------------------------------------------------------*/
2297 
2298 /* Retrieving mergeinfo. */
2299 
2300 /** Receives parsed @a mergeinfo for the file system path @a path.
2301  *
2302  * The user-provided @a baton is being passed through by the retrieval
2303  * function and @a scratch_pool will be cleared between invocations.
2304  *
2305  * @since New in 1.10.
2306  */
2307 typedef svn_fs_mergeinfo_receiver_t svn_repos_mergeinfo_receiver_t;
2308 
2309 /**
2310  * For each node found with mergeinfo on it, invoke @a receiver with
2311  * the provided @a receiver_baton.
2312  *
2313  * The paths in @a paths start with '/'.
2314  *
2315  * @a inherit indicates whether explicit, explicit or inherited, or
2316  * only inherited mergeinfo for @a paths is fetched.
2317  *
2318  * If @a revision is #SVN_INVALID_REVNUM, it defaults to youngest.
2319  *
2320  * If @a include_descendants is TRUE, then additionally return the
2321  * mergeinfo for any descendant of any element of @a paths which has
2322  * the #SVN_PROP_MERGEINFO property explicitly set on it.  (Note
2323  * that inheritance is only taken into account for the elements in @a
2324  * paths; descendants of the elements in @a paths which get their
2325  * mergeinfo via inheritance are not reported to @a receiver.)
2326  *
2327  * If optional @a authz_read_func is non-NULL, then use this function
2328  * (along with optional @a authz_read_baton) to check the readability
2329  * of each path which mergeinfo was requested for (from @a paths).
2330  * Silently omit unreadable paths from the request for mergeinfo.
2331  *
2332  * Use @a scratch_pool for temporary allocations.
2333  *
2334  * @since New in 1.10.
2335  */
2336 svn_error_t *
2337 svn_repos_fs_get_mergeinfo2(svn_repos_t *repos,
2338                             const apr_array_header_t *paths,
2339                             svn_revnum_t revision,
2340                             svn_mergeinfo_inheritance_t inherit,
2341                             svn_boolean_t include_descendants,
2342                             svn_repos_authz_func_t authz_read_func,
2343                             void *authz_read_baton,
2344                             svn_repos_mergeinfo_receiver_t receiver,
2345                             void *receiver_baton,
2346                             apr_pool_t *scratch_pool);
2347 
2348 /**
2349  * Same as svn_repos_fs_get_mergeinfo2(), but all mergeinfo is being collected
2350  * and returned in @a *catalog.  It will never be @c NULL, but may be empty.
2351  *
2352  * @since New in 1.5.
2353  *
2354  * @deprecated Provided for backward compatibility with the 1.9 API.
2355  */
2356 SVN_DEPRECATED
2357 svn_error_t *
2358 svn_repos_fs_get_mergeinfo(svn_mergeinfo_catalog_t *catalog,
2359                            svn_repos_t *repos,
2360                            const apr_array_header_t *paths,
2361                            svn_revnum_t revision,
2362                            svn_mergeinfo_inheritance_t inherit,
2363                            svn_boolean_t include_descendants,
2364                            svn_repos_authz_func_t authz_read_func,
2365                            void *authz_read_baton,
2366                            apr_pool_t *pool);
2367 
2368 
2369 /* ---------------------------------------------------------------*/
2370 
2371 /* Retrieving multiple revisions of a file. */
2372 
2373 /**
2374  * Retrieve a subset of the interesting revisions of a file @a path in
2375  * @a repos as seen in revision @a end.  Invoke @a handler with
2376  * @a handler_baton as its first argument for each such revision.
2377  * @a pool is used for all allocations.  See svn_fs_history_prev() for
2378  * a discussion of interesting revisions.
2379  *
2380  * If optional @a authz_read_func is non-NULL, then use this function
2381  * (along with optional @a authz_read_baton) to check the readability
2382  * of the rev-path in each interesting revision encountered.
2383  *
2384  * Revision discovery happens from @a end to @a start, and if an
2385  * unreadable revision is encountered before @a start is reached, then
2386  * revision discovery stops and only the revisions from @a end to the
2387  * oldest readable revision are returned (So it will appear that @a
2388  * path was added without history in the latter revision).
2389  *
2390  * If there is an interesting revision of the file that is less than or
2391  * equal to start, the iteration will start at that revision.  Else, the
2392  * iteration will start at the first revision of the file in the repository,
2393  * which has to be less than or equal to end.  Note that if the function
2394  * succeeds, @a handler will have been called at least once.
2395  *
2396  * In a series of calls, the file contents for the first interesting revision
2397  * will be provided as a text delta against the empty file.  In the following
2398  * calls, the delta will be against the contents for the previous call.
2399  *
2400  * If @a include_merged_revisions is TRUE, revisions which a included as a
2401  * result of a merge between @a start and @a end will be included.
2402  *
2403  * Since Subversion 1.8 this function has been enabled to support reversion
2404  * the revision range for @a include_merged_revision @c FALSE reporting by
2405  * switching @a start with @a end.
2406  *
2407  * @note Prior to Subversion 1.9, this function may request delta handlers
2408  * from @a handler even for empty text deltas.  Starting with 1.9, the
2409  * delta handler / baton return arguments passed to @a handler will be
2410  * NULL unless there is an actual difference in the file contents between
2411  * the current and the previous call.
2412  *
2413  * @since New in 1.5.
2414  */
2415 svn_error_t *
2416 svn_repos_get_file_revs2(svn_repos_t *repos,
2417                          const char *path,
2418                          svn_revnum_t start,
2419                          svn_revnum_t end,
2420                          svn_boolean_t include_merged_revisions,
2421                          svn_repos_authz_func_t authz_read_func,
2422                          void *authz_read_baton,
2423                          svn_file_rev_handler_t handler,
2424                          void *handler_baton,
2425                          apr_pool_t *pool);
2426 
2427 /**
2428  * Similar to #svn_file_rev_handler_t, but without the @a
2429  * result_of_merge parameter.
2430  *
2431  * @deprecated Provided for backward compatibility with 1.4 API.
2432  * @since New in 1.1.
2433  */
2434 typedef svn_error_t *(*svn_repos_file_rev_handler_t)
2435   (void *baton,
2436    const char *path,
2437    svn_revnum_t rev,
2438    apr_hash_t *rev_props,
2439    svn_txdelta_window_handler_t *delta_handler,
2440    void **delta_baton,
2441    apr_array_header_t *prop_diffs,
2442    apr_pool_t *pool);
2443 
2444 /**
2445  * Similar to svn_repos_get_file_revs2(), with @a include_merged_revisions
2446  * set to FALSE.
2447  *
2448  * @deprecated Provided for backward compatibility with the 1.4 API.
2449  * @since New in 1.1.
2450  */
2451 SVN_DEPRECATED
2452 svn_error_t *
2453 svn_repos_get_file_revs(svn_repos_t *repos,
2454                         const char *path,
2455                         svn_revnum_t start,
2456                         svn_revnum_t end,
2457                         svn_repos_authz_func_t authz_read_func,
2458                         void *authz_read_baton,
2459                         svn_repos_file_rev_handler_t handler,
2460                         void *handler_baton,
2461                         apr_pool_t *pool);
2462 
2463 
2464 /* ---------------------------------------------------------------*/
2465 
2466 /**
2467  * @defgroup svn_repos_hook_wrappers Hook-sensitive wrappers for libsvn_fs \
2468  * routines.
2469  * @{
2470  */
2471 
2472 /** Like svn_fs_commit_txn(), but invoke the @a repos' pre- and
2473  * post-commit hooks around the commit.  Use @a pool for any necessary
2474  * allocations.
2475  *
2476  * If the pre-commit hook fails, do not attempt to commit the
2477  * transaction and throw the original error to the caller.
2478  *
2479  * A successful commit is indicated by a valid revision value in @a
2480  * *new_rev, not if svn_fs_commit_txn() returns an error, which can
2481  * occur during its post commit FS processing.  If the transaction was
2482  * not committed, then return the associated error and do not execute
2483  * the post-commit hook.
2484  *
2485  * If the commit succeeds the post-commit hook is executed.  If the
2486  * post-commit hook returns an error, always wrap it with
2487  * SVN_ERR_REPOS_POST_COMMIT_HOOK_FAILED; this allows the caller to
2488  * find the post-commit hook error in the returned error chain.  If
2489  * both svn_fs_commit_txn() and the post-commit hook return errors,
2490  * then svn_fs_commit_txn()'s error is the parent error and the
2491  * SVN_ERR_REPOS_POST_COMMIT_HOOK_FAILED wrapped error is the child
2492  * error.
2493  *
2494  * @a conflict_p, @a new_rev, and @a txn are as in svn_fs_commit_txn().
2495  */
2496 svn_error_t *
2497 svn_repos_fs_commit_txn(const char **conflict_p,
2498                         svn_repos_t *repos,
2499                         svn_revnum_t *new_rev,
2500                         svn_fs_txn_t *txn,
2501                         apr_pool_t *pool);
2502 
2503 /** Like svn_fs_begin_txn(), but use @a revprop_table, a hash mapping
2504  * <tt>const char *</tt> property names to #svn_string_t values, to
2505  * set the properties on transaction @a *txn_p.  @a repos is the
2506  * repository object which contains the filesystem.  @a rev, @a
2507  * *txn_p, and @a pool are as in svn_fs_begin_txn().
2508  *
2509  * Before a txn is created, the repository's start-commit hooks are
2510  * run; if any of them fail, no txn is created, @a *txn_p is unaffected,
2511  * and #SVN_ERR_REPOS_HOOK_FAILURE is returned.
2512  *
2513  * @note @a revprop_table may contain an #SVN_PROP_REVISION_DATE property,
2514  * which will be set on the transaction, but that will be overwritten
2515  * when the transaction is committed.
2516  *
2517  * @since New in 1.5.
2518  */
2519 svn_error_t *
2520 svn_repos_fs_begin_txn_for_commit2(svn_fs_txn_t **txn_p,
2521                                    svn_repos_t *repos,
2522                                    svn_revnum_t rev,
2523                                    apr_hash_t *revprop_table,
2524                                    apr_pool_t *pool);
2525 
2526 
2527 /**
2528  * Same as svn_repos_fs_begin_txn_for_commit2(), but with @a revprop_table
2529  * set to a hash containing @a author and @a log_msg as the
2530  * #SVN_PROP_REVISION_AUTHOR and #SVN_PROP_REVISION_LOG properties,
2531  * respectively.  @a author and @a log_msg may both be @c NULL.
2532  *
2533  * @deprecated Provided for backward compatibility with the 1.4 API.
2534  */
2535 SVN_DEPRECATED
2536 svn_error_t *
2537 svn_repos_fs_begin_txn_for_commit(svn_fs_txn_t **txn_p,
2538                                   svn_repos_t *repos,
2539                                   svn_revnum_t rev,
2540                                   const char *author,
2541                                   const char *log_msg,
2542                                   apr_pool_t *pool);
2543 
2544 
2545 /** Like svn_fs_begin_txn(), but use @a author to set the corresponding
2546  * property on transaction @a *txn_p.  @a repos is the repository object
2547  * which contains the filesystem.  @a rev, @a *txn_p, and @a pool are as in
2548  * svn_fs_begin_txn().
2549  *
2550  * ### Someday: before a txn is created, some kind of read-hook could
2551  *              be called here.
2552  *
2553  * @note This function was never fully implemented, nor used. Ignore it.
2554  * @deprecated Provided for backward compatibility with the 1.7 API.
2555  */
2556 SVN_DEPRECATED
2557 svn_error_t *
2558 svn_repos_fs_begin_txn_for_update(svn_fs_txn_t **txn_p,
2559                                   svn_repos_t *repos,
2560                                   svn_revnum_t rev,
2561                                   const char *author,
2562                                   apr_pool_t *pool);
2563 
2564 
2565 /** @} */
2566 
2567 /** @defgroup svn_repos_fs_locks Repository lock wrappers
2568  * @{
2569  */
2570 
2571 /** Like svn_fs_lock_many(), but invoke the @a repos's pre- and
2572  * post-lock hooks before and after the locking action.
2573  *
2574  * The pre-lock is run for every path in @a targets. Those targets for
2575  * which the pre-lock is successful are passed to svn_fs_lock_many and
2576  * the post-lock is run for those that are successfully locked.
2577  * Pre-lock hook errors are passed to @a lock_callback.
2578  *
2579  * For each path in @a targets @a lock_callback will be invoked
2580  * passing @a lock_baton and the lock and error that apply to path.
2581  * @a lock_callback can be NULL in which case it is not called and any
2582  * errors that would have been passed to the callback are not reported.
2583  *
2584  * If an error occurs when running the post-lock hook the error is
2585  * returned wrapped with #SVN_ERR_REPOS_POST_LOCK_HOOK_FAILED.  If the
2586  * caller sees this error, it knows that some locks succeeded.
2587  *
2588  * The pre-lock hook may cause a different token to be used for the
2589  * lock, instead of the token supplied; see the pre-lock-hook
2590  * documentation for more.
2591  *
2592  * The lock and path passed to @a lock_callback will be allocated in
2593  * @a result_pool.  Use @a scratch_pool for temporary allocations.
2594  *
2595  * @note This function is not atomic.  If it returns an error, some targets
2596  * may remain unlocked while others may have been locked.
2597  *
2598  * @see svn_fs_lock_many
2599  *
2600  * @since New in 1.9.
2601  */
2602 svn_error_t *
2603 svn_repos_fs_lock_many(svn_repos_t *repos,
2604                        apr_hash_t *lock_targets,
2605                        const char *comment,
2606                        svn_boolean_t is_dav_comment,
2607                        apr_time_t expiration_date,
2608                        svn_boolean_t steal_lock,
2609                        svn_fs_lock_callback_t lock_callback,
2610                        void *lock_baton,
2611                        apr_pool_t *result_pool,
2612                        apr_pool_t *scratch_pool);
2613 
2614 /** Similar to svn_repos_fs_lock_many() but locks only a single path.
2615  *
2616  * @since New in 1.2.
2617  */
2618 svn_error_t *
2619 svn_repos_fs_lock(svn_lock_t **lock,
2620                   svn_repos_t *repos,
2621                   const char *path,
2622                   const char *token,
2623                   const char *comment,
2624                   svn_boolean_t is_dav_comment,
2625                   apr_time_t expiration_date,
2626                   svn_revnum_t current_rev,
2627                   svn_boolean_t steal_lock,
2628                   apr_pool_t *pool);
2629 
2630 
2631 /** Like svn_fs_unlock_many(), but invoke the @a repos's pre- and
2632  * post-unlock hooks before and after the unlocking action.
2633  *
2634  * The pre-unlock hook is run for every path in @a targets. Those
2635  * targets for which the pre-unlock is successful are passed to
2636  * svn_fs_unlock_many and the post-unlock is run for those that are
2637  * successfully unlocked. Pre-unlock hook errors are passed to @a
2638  * lock_callback.
2639  *
2640  * For each path in @a targets @a lock_callback will be invoked
2641  * passing @a lock_baton and error that apply to path.  The lock
2642  * passed to the callback will be NULL.  @a lock_callback can be NULL
2643  * in which case it is not called and any errors that would have been
2644  * passed to the callback are not reported.
2645  *
2646  * If an error occurs when running the post-unlock hook, return the
2647  * original error wrapped with #SVN_ERR_REPOS_POST_UNLOCK_HOOK_FAILED.
2648  * If the caller sees this error, it knows that some unlocks
2649  * succeeded.
2650  *
2651  * The path passed to @a lock_callback will be allocated in @a result_pool.
2652  * Use @a scratch_pool for temporary allocations.
2653  *
2654  * @note This function is not atomic.  If it returns an error, some targets
2655  * may remain locked while others may have been unlocked.
2656  *
2657  * @see svn_fs_unlock_many
2658  *
2659  * @since New in 1.9.
2660  */
2661 svn_error_t *
2662 svn_repos_fs_unlock_many(svn_repos_t *repos,
2663                          apr_hash_t *unlock_targets,
2664                          svn_boolean_t break_lock,
2665                          svn_fs_lock_callback_t lock_callback,
2666                          void *lock_baton,
2667                          apr_pool_t *result_pool,
2668                          apr_pool_t *scratch_pool);
2669 
2670 /** Similar to svn_repos_fs_unlock_many() but only unlocks a single path.
2671  *
2672  * @since New in 1.2.
2673  */
2674 svn_error_t *
2675 svn_repos_fs_unlock(svn_repos_t *repos,
2676                     const char *path,
2677                     const char *token,
2678                     svn_boolean_t break_lock,
2679                     apr_pool_t *pool);
2680 
2681 
2682 
2683 /** Look up all the locks in and under @a path in @a repos, setting @a
2684  * *locks to a hash which maps <tt>const char *</tt> paths to the
2685  * #svn_lock_t locks associated with those paths.  Use @a
2686  * authz_read_func and @a authz_read_baton to "screen" all returned
2687  * locks.  That is: do not return any locks on any paths that are
2688  * unreadable in HEAD, just silently omit them.
2689  *
2690  * @a depth limits the returned locks to those associated with paths
2691  * within the specified depth of @a path, and must be one of the
2692  * following values:  #svn_depth_empty, #svn_depth_files,
2693  * #svn_depth_immediates, or #svn_depth_infinity.
2694  *
2695  * @since New in 1.7.
2696  */
2697 svn_error_t *
2698 svn_repos_fs_get_locks2(apr_hash_t **locks,
2699                         svn_repos_t *repos,
2700                         const char *path,
2701                         svn_depth_t depth,
2702                         svn_repos_authz_func_t authz_read_func,
2703                         void *authz_read_baton,
2704                         apr_pool_t *pool);
2705 
2706 /**
2707  * Similar to svn_repos_fs_get_locks2(), but with @a depth always
2708  * passed as svn_depth_infinity.
2709  *
2710  * @since New in 1.2.
2711  * @deprecated Provided for backward compatibility with the 1.6 API.
2712  */
2713 SVN_DEPRECATED
2714 svn_error_t *
2715 svn_repos_fs_get_locks(apr_hash_t **locks,
2716                        svn_repos_t *repos,
2717                        const char *path,
2718                        svn_repos_authz_func_t authz_read_func,
2719                        void *authz_read_baton,
2720                        apr_pool_t *pool);
2721 
2722 /** @} */
2723 
2724 /** @defgroup svn_repos_properties Versioned and Unversioned Properties
2725  *
2726  * Prop-changing and prop-reading wrappers for libsvn_fs routines.
2727  * @{
2728  */
2729 
2730 /**
2731  * Like svn_fs_change_rev_prop2(), but validate the name and value of the
2732  * property and invoke the @a repos's pre- and post-revprop-change hooks
2733  * around the change as specified by @a use_pre_revprop_change_hook and
2734  * @a use_post_revprop_change_hook (respectively).
2735  *
2736  * @a rev is the revision whose property to change, @a name is the
2737  * name of the property, and @a new_value is the new value of the
2738  * property.   If @a old_value_p is not @c NULL, then @a *old_value_p
2739  * is the expected current (preexisting) value of the property (or @c NULL
2740  * for "unset").  @a author is the authenticated username of the person
2741  * changing the property value, or NULL if not available.
2742  *
2743  * If @a authz_read_func is non-NULL, then use it (with @a
2744  * authz_read_baton) to validate the changed-paths associated with @a
2745  * rev.  If the revision contains any unreadable changed paths, then
2746  * return #SVN_ERR_AUTHZ_UNREADABLE.
2747  *
2748  * Validate @a name and @a new_value like the same way
2749  * svn_repos_fs_change_node_prop() does.
2750  *
2751  * Use @a pool for temporary allocations.
2752  *
2753  * @since New in 1.7.
2754  */
2755 svn_error_t *
2756 svn_repos_fs_change_rev_prop4(svn_repos_t *repos,
2757                               svn_revnum_t rev,
2758                               const char *author,
2759                               const char *name,
2760                               const svn_string_t *const *old_value_p,
2761                               const svn_string_t *new_value,
2762                               svn_boolean_t use_pre_revprop_change_hook,
2763                               svn_boolean_t use_post_revprop_change_hook,
2764                               svn_repos_authz_func_t authz_read_func,
2765                               void *authz_read_baton,
2766                               apr_pool_t *pool);
2767 
2768 /**
2769  * Similar to svn_repos_fs_change_rev_prop4(), but with @a old_value_p always
2770  * set to @c NULL.  (In other words, it is similar to
2771  * svn_fs_change_rev_prop().)
2772  *
2773  * @deprecated Provided for backward compatibility with the 1.6 API.
2774  * @since New in 1.5.
2775  */
2776 SVN_DEPRECATED
2777 svn_error_t *
2778 svn_repos_fs_change_rev_prop3(svn_repos_t *repos,
2779                               svn_revnum_t rev,
2780                               const char *author,
2781                               const char *name,
2782                               const svn_string_t *new_value,
2783                               svn_boolean_t use_pre_revprop_change_hook,
2784                               svn_boolean_t use_post_revprop_change_hook,
2785                               svn_repos_authz_func_t authz_read_func,
2786                               void *authz_read_baton,
2787                               apr_pool_t *pool);
2788 
2789 /**
2790  * Similar to svn_repos_fs_change_rev_prop3(), but with the @a
2791  * use_pre_revprop_change_hook and @a use_post_revprop_change_hook
2792  * always set to @c TRUE.
2793  *
2794  * @deprecated Provided for backward compatibility with the 1.4 API.
2795  */
2796 SVN_DEPRECATED
2797 svn_error_t *
2798 svn_repos_fs_change_rev_prop2(svn_repos_t *repos,
2799                               svn_revnum_t rev,
2800                               const char *author,
2801                               const char *name,
2802                               const svn_string_t *new_value,
2803                               svn_repos_authz_func_t authz_read_func,
2804                               void *authz_read_baton,
2805                               apr_pool_t *pool);
2806 
2807 /**
2808  * Similar to svn_repos_fs_change_rev_prop2(), but with the
2809  * @a authz_read_func parameter always NULL.
2810  *
2811  * @deprecated Provided for backward compatibility with the 1.0 API.
2812  */
2813 SVN_DEPRECATED
2814 svn_error_t *
2815 svn_repos_fs_change_rev_prop(svn_repos_t *repos,
2816                              svn_revnum_t rev,
2817                              const char *author,
2818                              const char *name,
2819                              const svn_string_t *new_value,
2820                              apr_pool_t *pool);
2821 
2822 
2823 
2824 /**
2825  * Set @a *value_p to the value of the property named @a propname on
2826  * revision @a rev in the filesystem opened in @a repos.  If @a rev
2827  * has no property by that name, set @a *value_p to zero.  Allocate
2828  * the result in @a pool.
2829  *
2830  * If @a authz_read_func is non-NULL, then use it (with @a
2831  * authz_read_baton) to validate the changed-paths associated with @a
2832  * rev.  If the changed-paths are all unreadable, then set @a *value_p
2833  * to zero unconditionally.  If only some of the changed-paths are
2834  * unreadable, then allow 'svn:author' and 'svn:date' propvalues to be
2835  * fetched, but return 0 for any other property.
2836  *
2837  * @since New in 1.1.
2838  */
2839 svn_error_t *
2840 svn_repos_fs_revision_prop(svn_string_t **value_p,
2841                            svn_repos_t *repos,
2842                            svn_revnum_t rev,
2843                            const char *propname,
2844                            svn_repos_authz_func_t authz_read_func,
2845                            void *authz_read_baton,
2846                            apr_pool_t *pool);
2847 
2848 
2849 /**
2850  * Set @a *table_p to the entire property list of revision @a rev in
2851  * filesystem opened in @a repos, as a hash table allocated in @a
2852  * pool.  The table maps <tt>char *</tt> property names to
2853  * #svn_string_t * values; the names and values are allocated in @a
2854  * pool.
2855  *
2856  * If @a authz_read_func is non-NULL, then use it (with @a
2857  * authz_read_baton) to validate the changed-paths associated with @a
2858  * rev.  If the changed-paths are all unreadable, then return an empty
2859  * hash. If only some of the changed-paths are unreadable, then return
2860  * an empty hash, except for 'svn:author' and 'svn:date' properties
2861  * (assuming those properties exist).
2862  *
2863  * @since New in 1.1.
2864  */
2865 svn_error_t *
2866 svn_repos_fs_revision_proplist(apr_hash_t **table_p,
2867                                svn_repos_t *repos,
2868                                svn_revnum_t rev,
2869                                svn_repos_authz_func_t authz_read_func,
2870                                void *authz_read_baton,
2871                                apr_pool_t *pool);
2872 
2873 /** Validating wrapper for svn_fs_change_node_prop() (which see for
2874  * argument descriptions).
2875  *
2876  * If @a name's kind is not #svn_prop_regular_kind, return
2877  * #SVN_ERR_REPOS_BAD_ARGS.  If @a name is an "svn:" property, validate its
2878  * @a value and return SVN_ERR_BAD_PROPERTY_VALUE if it is invalid for the
2879  * property.
2880  *
2881  * @note Originally, the only properties validated were the "svn:" properties
2882  * #SVN_PROP_REVISION_LOG and #SVN_PROP_REVISION_DATE. For the current
2883  * validation rules see the private function svn_repos__validate_prop().
2884  */
2885 svn_error_t *
2886 svn_repos_fs_change_node_prop(svn_fs_root_t *root,
2887                               const char *path,
2888                               const char *name,
2889                               const svn_string_t *value,
2890                               apr_pool_t *pool);
2891 
2892 /**
2893  * Set @a *inherited_values to a depth-first ordered array of
2894  * #svn_prop_inherited_item_t * structures (the path_or_url members of
2895  * which are relative filesystem paths) representing the properties
2896  * inherited by @a path in @a root.  If no properties are inherited,
2897  * then set @a *inherited_values to an empty array.
2898  *
2899  * if @a propname is NULL then retrieve all explicit and/or inherited
2900  * properties.  Otherwise retrieve only the properties named @a propname.
2901  *
2902  * If optional @a authz_read_func is non-NULL, then use this function
2903  * (along with optional @a authz_read_baton) to check the readability
2904  * of each parent path from which properties are inherited. Silently omit
2905  * properties for unreadable parent paths.
2906  *
2907  * Allocate @a *inherited_props in @a result_pool.  Use @a scratch_pool for
2908  * temporary allocations.
2909  *
2910  * @since New in 1.8.
2911  */
2912 svn_error_t *
2913 svn_repos_fs_get_inherited_props(apr_array_header_t **inherited_props,
2914                                  svn_fs_root_t *root,
2915                                  const char *path,
2916                                  const char *propname,
2917                                  svn_repos_authz_func_t authz_read_func,
2918                                  void *authz_read_baton,
2919                                  apr_pool_t *result_pool,
2920                                  apr_pool_t *scratch_pool);
2921 
2922 /** Validating wrapper for svn_fs_change_txn_prop() (which see for
2923  * argument descriptions).  See svn_repos_fs_change_txn_props() for more
2924  * information.
2925  */
2926 svn_error_t *
2927 svn_repos_fs_change_txn_prop(svn_fs_txn_t *txn,
2928                              const char *name,
2929                              const svn_string_t *value,
2930                              apr_pool_t *pool);
2931 
2932 /** Validating wrapper for svn_fs_change_txn_props() (which see for
2933  * argument descriptions).  Validate properties and their values the
2934  * same way svn_repos_fs_change_node_prop() does.
2935  *
2936  * @since New in 1.5.
2937  */
2938 svn_error_t *
2939 svn_repos_fs_change_txn_props(svn_fs_txn_t *txn,
2940                               const apr_array_header_t *props,
2941                               apr_pool_t *pool);
2942 
2943 /** @} */
2944 
2945 
2946 /* ---------------------------------------------------------------*/
2947 
2948 /**
2949  * @defgroup svn_repos_inspection Data structures and editor things for \
2950  * repository inspection.
2951  * @{
2952  *
2953  * As it turns out, the svn_repos_replay2(), svn_repos_dir_delta2() and
2954  * svn_repos_begin_report3() interfaces can be extremely useful for
2955  * examining the repository, or more exactly, changes to the repository.
2956  * These drivers allows for differences between two trees to be
2957  * described using an editor.
2958  *
2959  * By using the editor obtained from svn_repos_node_editor() with one of
2960  * the drivers mentioned above, the description of how to transform one
2961  * tree into another can be used to build an in-memory linked-list tree,
2962  * which each node representing a repository node that was changed.
2963  */
2964 
2965 /** A node in the repository. */
2966 typedef struct svn_repos_node_t
2967 {
2968   /** Node type (file, dir, etc.) */
2969   svn_node_kind_t kind;
2970 
2971   /** How this node entered the node tree: 'A'dd, 'D'elete, 'R'eplace */
2972   char action;
2973 
2974   /** Were there any textual mods? (files only) */
2975   svn_boolean_t text_mod;
2976 
2977   /** Where there any property mods? */
2978   svn_boolean_t prop_mod;
2979 
2980   /** The name of this node as it appears in its parent's entries list */
2981   const char *name;
2982 
2983   /** The filesystem revision where this was copied from (if any) */
2984   svn_revnum_t copyfrom_rev;
2985 
2986   /** The filesystem path where this was copied from (if any) */
2987   const char *copyfrom_path;
2988 
2989   /** Pointer to the next sibling of this node */
2990   struct svn_repos_node_t *sibling;
2991 
2992   /** Pointer to the first child of this node */
2993   struct svn_repos_node_t *child;
2994 
2995   /** Pointer to the parent of this node */
2996   struct svn_repos_node_t *parent;
2997 
2998 } svn_repos_node_t;
2999 
3000 
3001 /** Set @a *editor and @a *edit_baton to an editor that, when driven by
3002  * a driver such as svn_repos_replay2(), builds an <tt>svn_repos_node_t *</tt>
3003  * tree representing the delta from @a base_root to @a root in @a
3004  * repos's filesystem.
3005  *
3006  * The editor can also be driven by svn_repos_dir_delta2() or
3007  * svn_repos_begin_report3(), but unless you have special needs,
3008  * svn_repos_replay2() is preferred.
3009  *
3010  * Invoke svn_repos_node_from_baton() on @a edit_baton to obtain the root
3011  * node afterwards.
3012  *
3013  * Note that the delta includes "bubbled-up" directories; that is,
3014  * many of the directory nodes will have no prop_mods.
3015  *
3016  * Allocate the tree and its contents in @a node_pool; do all other
3017  * allocation in @a pool.
3018  */
3019 svn_error_t *
3020 svn_repos_node_editor(const svn_delta_editor_t **editor,
3021                       void **edit_baton,
3022                       svn_repos_t *repos,
3023                       svn_fs_root_t *base_root,
3024                       svn_fs_root_t *root,
3025                       apr_pool_t *node_pool,
3026                       apr_pool_t *pool);
3027 
3028 /** Return the root node of the linked-list tree generated by driving the
3029  * editor (associated with @a edit_baton) created by svn_repos_node_editor().
3030  * This is only really useful if used *after* the editor drive is completed.
3031  */
3032 svn_repos_node_t *
3033 svn_repos_node_from_baton(void *edit_baton);
3034 
3035 /**
3036  * Return repository format information for @a repos.
3037  *
3038  * Set @a *repos_format to the repository format number of @a repos, which is
3039  * an integer that increases when incompatible changes are made (such as
3040  * by #svn_repos_upgrade2).
3041  *
3042  * Set @a *supports_version to the version number of the minimum Subversion
3043  * GA release that can read and write @a repos; allocate it in
3044  * @a result_pool.  Use @a scratch_pool for temporary allocations.
3045  *
3046  * @see svn_fs_info_format, svn_repos_capabilities
3047  *
3048  * @since New in 1.9.
3049  */
3050 svn_error_t *
3051 svn_repos_info_format(int *repos_format,
3052                       svn_version_t **supports_version,
3053                       svn_repos_t *repos,
3054                       apr_pool_t *result_pool,
3055                       apr_pool_t *scratch_pool);
3056 
3057 /** @} */
3058 
3059 /* ---------------------------------------------------------------*/
3060 
3061 /**
3062  * @defgroup svn_repos_dump_load Dumping, loading and verifying filesystem data
3063  * @{
3064  *
3065  * The filesystem 'dump' format contains nothing but the abstract
3066  * structure of the filesystem -- independent of any internal node-id
3067  * schema or database back-end.  All of the data in the dumpfile is
3068  * acquired by public function calls into svn_fs.h.  Similarly, the
3069  * parser which reads the dumpfile is able to reconstruct the
3070  * filesystem using only public svn_fs.h routines.
3071  *
3072  * Thus the dump/load feature's main purpose is for *migrating* data
3073  * from one svn filesystem to another -- presumably two filesystems
3074  * which have different internal implementations.
3075  *
3076  * If you simply want to backup your filesystem, you're probably
3077  * better off using the built-in facilities of the DB backend (using
3078  * Berkeley DB's hot-backup feature, for example.)
3079  *
3080  * For a description of the dumpfile format, see
3081  * /trunk/notes/fs_dumprestore.txt.
3082  */
3083 
3084 /* The RFC822-style headers in our dumpfile format. */
3085 #define SVN_REPOS_DUMPFILE_MAGIC_HEADER            "SVN-fs-dump-format-version"
3086 #define SVN_REPOS_DUMPFILE_FORMAT_VERSION           3
3087 #define SVN_REPOS_DUMPFILE_FORMAT_VERSION_DELTAS    3
3088 #define SVN_REPOS_DUMPFILE_UUID                      "UUID"
3089 #define SVN_REPOS_DUMPFILE_CONTENT_LENGTH            "Content-length"
3090 
3091 #define SVN_REPOS_DUMPFILE_REVISION_NUMBER           "Revision-number"
3092 
3093 #define SVN_REPOS_DUMPFILE_NODE_PATH                 "Node-path"
3094 #define SVN_REPOS_DUMPFILE_NODE_KIND                 "Node-kind"
3095 #define SVN_REPOS_DUMPFILE_NODE_ACTION               "Node-action"
3096 #define SVN_REPOS_DUMPFILE_NODE_COPYFROM_PATH        "Node-copyfrom-path"
3097 #define SVN_REPOS_DUMPFILE_NODE_COPYFROM_REV         "Node-copyfrom-rev"
3098 /** @since New in 1.6. */
3099 #define SVN_REPOS_DUMPFILE_TEXT_COPY_SOURCE_MD5      "Text-copy-source-md5"
3100 /** @since New in 1.6. */
3101 #define SVN_REPOS_DUMPFILE_TEXT_COPY_SOURCE_SHA1     "Text-copy-source-sha1"
3102 #define SVN_REPOS_DUMPFILE_TEXT_COPY_SOURCE_CHECKSUM \
3103                                         SVN_REPOS_DUMPFILE_TEXT_COPY_SOURCE_MD5
3104 /** @since New in 1.6. */
3105 #define SVN_REPOS_DUMPFILE_TEXT_CONTENT_MD5          "Text-content-md5"
3106 /** @since New in 1.6. */
3107 #define SVN_REPOS_DUMPFILE_TEXT_CONTENT_SHA1         "Text-content-sha1"
3108 #define SVN_REPOS_DUMPFILE_TEXT_CONTENT_CHECKSUM     \
3109                                         SVN_REPOS_DUMPFILE_TEXT_CONTENT_MD5
3110 
3111 #define SVN_REPOS_DUMPFILE_PROP_CONTENT_LENGTH       "Prop-content-length"
3112 #define SVN_REPOS_DUMPFILE_TEXT_CONTENT_LENGTH       "Text-content-length"
3113 
3114 /** @since New in 1.1. */
3115 #define SVN_REPOS_DUMPFILE_PROP_DELTA                "Prop-delta"
3116 /** @since New in 1.1. */
3117 #define SVN_REPOS_DUMPFILE_TEXT_DELTA                "Text-delta"
3118 /** @since New in 1.6. */
3119 #define SVN_REPOS_DUMPFILE_TEXT_DELTA_BASE_MD5       "Text-delta-base-md5"
3120 /** @since New in 1.6. */
3121 #define SVN_REPOS_DUMPFILE_TEXT_DELTA_BASE_SHA1      "Text-delta-base-sha1"
3122 /** @since New in 1.5. */
3123 #define SVN_REPOS_DUMPFILE_TEXT_DELTA_BASE_CHECKSUM  \
3124                                         SVN_REPOS_DUMPFILE_TEXT_DELTA_BASE_MD5
3125 
3126 /** The different policies for processing the UUID in the dumpfile. */
3127 enum svn_repos_load_uuid
3128 {
3129   /** only update uuid if the repos has no revisions. */
3130   svn_repos_load_uuid_default,
3131   /** never update uuid. */
3132   svn_repos_load_uuid_ignore,
3133   /** always update uuid. */
3134   svn_repos_load_uuid_force
3135 };
3136 
3137 /** Callback type for use with svn_repos_verify_fs3().  @a revision
3138  * and @a verify_err are the details of a single verification failure
3139  * that occurred during the svn_repos_verify_fs3() call.  @a baton is
3140  * the same baton given to svn_repos_verify_fs3().  @a scratch_pool is
3141  * provided for the convenience of the implementor, who should not
3142  * expect it to live longer than a single callback call.
3143  *
3144  * @a verify_err will be cleared and becomes invalid after the callback
3145  * returns, use svn_error_dup() to preserve the error.  If a callback uses
3146  * @a verify_err as the return value or as a part of the return value, it
3147  * should also call svn_error_dup() for @a verify_err.  Implementors of this
3148  * callback are forbidden to call svn_error_clear() for @a verify_err.
3149  *
3150  * @see svn_repos_verify_fs3
3151  *
3152  * @since New in 1.9.
3153  */
3154 typedef svn_error_t *(*svn_repos_verify_callback_t)(void *baton,
3155                                                     svn_revnum_t revision,
3156                                                     svn_error_t *verify_err,
3157                                                     apr_pool_t *scratch_pool);
3158 
3159 /**
3160  * Verify the contents of the file system in @a repos.
3161  *
3162  * Verify the revisions from @a start_rev to @a end_rev inclusive.  If
3163  * @a start_rev is #SVN_INVALID_REVNUM, start at revision 0; if @a end_rev
3164  * is #SVN_INVALID_REVNUM, end at the head revision.  @a start_rev must be
3165  * older than or equal to @a end_rev.  If revision 0 is included in the
3166  * range, then also verify "global invariants" of the repository, as
3167  * described in svn_fs_verify().
3168  *
3169  * If @a check_normalization is @c TRUE, report any name collisions
3170  * within the same directory or svn:mergeinfo property where the names
3171  * differ only in character representation, but are otherwise
3172  * identical.
3173  *
3174  * If @a metadata_only is @c TRUE, backends that have a concept of separate
3175  * metadata verification will only perform that and skip the more expensive
3176  * file context reconstruction and verification.  For FSFS format 7+ and
3177  * FSX, this allows for a very fast check against external corruption.
3178  *
3179  * If @a verify_callback is not @c NULL, call it with @a verify_baton upon
3180  * receiving an FS-specific structure failure or a revision verification
3181  * failure.  Set @c revision callback argument to #SVN_INVALID_REVNUM or
3182  * to the revision number respectively.  Set @c verify_err to svn_error_t
3183  * describing the reason of the failure.  @c verify_err will be cleared
3184  * after the callback returns, use svn_error_dup() to preserve the error.
3185  * If @a verify_callback returns an error different from #SVN_NO_ERROR,
3186  * stop verifying the repository and immediately return the error from
3187  * @a verify_callback.
3188  *
3189  * If @a verify_callback is @c NULL, this function returns the first
3190  * encountered verification error or #SVN_NO_ERROR if there were no failures
3191  * during the verification.  Errors that prevent the verification process
3192  * from continuing, such as #SVN_ERR_CANCELLED, are returned immediately
3193  * and do not trigger an invocation of @a verify_callback.
3194  *
3195  * If @a notify_func is not null, then call it with @a notify_baton and
3196  * with a notification structure in which the fields are set as follows.
3197  * (For a warning that does not apply to a specific revision, the revision
3198  * number is #SVN_INVALID_REVNUM.)
3199  *
3200  *   For each FS-specific structure warning:
3201  *      @c action = svn_repos_notify_verify_rev_structure
3202  *      @c revision = the revision or #SVN_INVALID_REVNUM
3203  *
3204  *   For each revision verification warning:
3205  *      @c action = #svn_repos_notify_warning
3206  *      @c warning and @c warning_str fields set accordingly
3207  *        ### TODO: Set @c revision = the revision?
3208  *
3209  *   For each successfully verified revision:
3210  *      @c action = #svn_repos_notify_verify_rev_end
3211  *      @c revision = the revision
3212  *
3213  *   At the end:
3214  *      @c action = svn_repos_notify_verify_end
3215  *        ### Do we really need a callback to tell us the function we
3216  *            called has reached its end and is about to return?
3217  *        ### Not sent, currently, if a FS structure error is found.
3218  *
3219  * If @a cancel_func is not @c NULL, call it periodically with @a
3220  * cancel_baton as argument to see if the caller wishes to cancel the
3221  * verification.
3222  *
3223  * Use @a scratch_pool for temporary allocation.
3224  *
3225  * @see svn_repos_verify_callback_t
3226  *
3227  * @since New in 1.9.
3228  */
3229 svn_error_t *
3230 svn_repos_verify_fs3(svn_repos_t *repos,
3231                      svn_revnum_t start_rev,
3232                      svn_revnum_t end_rev,
3233                      svn_boolean_t check_normalization,
3234                      svn_boolean_t metadata_only,
3235                      svn_repos_notify_func_t notify_func,
3236                      void *notify_baton,
3237                      svn_repos_verify_callback_t verify_callback,
3238                      void *verify_baton,
3239                      svn_cancel_func_t cancel,
3240                      void *cancel_baton,
3241                      apr_pool_t *scratch_pool);
3242 
3243 /**
3244  * Like svn_repos_verify_fs3(), but with @a verify_callback and
3245  * @a verify_baton set to @c NULL and with @a check_normalization
3246  * and @a metadata_only set to @c FALSE.
3247  *
3248  * @since New in 1.7.
3249  * @deprecated Provided for backward compatibility with the 1.8 API.
3250  */
3251 SVN_DEPRECATED
3252 svn_error_t *
3253 svn_repos_verify_fs2(svn_repos_t *repos,
3254                      svn_revnum_t start_rev,
3255                      svn_revnum_t end_rev,
3256                      svn_repos_notify_func_t notify_func,
3257                      void *notify_baton,
3258                      svn_cancel_func_t cancel,
3259                      void *cancel_baton,
3260                      apr_pool_t *scratch_pool);
3261 
3262 /**
3263  * Similar to svn_repos_verify_fs2(), but with a feedback_stream instead of
3264  * handling feedback via the notify_func handler.
3265  *
3266  * If @a feedback_stream is not @c NULL, write feedback to it (lines of
3267  * the form "* Verified revision %ld\n").
3268  *
3269  * @since New in 1.5.
3270  * @deprecated Provided for backward compatibility with the 1.6 API.
3271  */
3272 SVN_DEPRECATED
3273 svn_error_t *
3274 svn_repos_verify_fs(svn_repos_t *repos,
3275                     svn_stream_t *feedback_stream,
3276                     svn_revnum_t start_rev,
3277                     svn_revnum_t end_rev,
3278                     svn_cancel_func_t cancel_func,
3279                     void *cancel_baton,
3280                     apr_pool_t *pool);
3281 
3282 /**
3283  * Dump the contents of the filesystem within already-open @a repos into
3284  * writable @a dumpstream.  If @a dumpstream is
3285  * @c NULL, this is effectively a primitive verify.  It is not complete,
3286  * however; see instead svn_repos_verify_fs3().
3287  *
3288  * Begin at revision @a start_rev, and dump every revision up through
3289  * @a end_rev.  If @a start_rev is #SVN_INVALID_REVNUM, start at revision
3290  * 0.  If @a end_rev is #SVN_INVALID_REVNUM, end at the head revision.
3291  *
3292  * If @a incremental is @c TRUE, the first revision dumped will be a diff
3293  * against the previous revision (usually it looks like a full dump of
3294  * the tree).
3295  *
3296  * If @a use_deltas is @c TRUE, output only node properties which have
3297  * changed relative to the previous contents, and output text contents
3298  * as svndiff data against the previous contents.  Regardless of how
3299  * this flag is set, the first revision of a non-incremental dump will
3300  * be done with full plain text.  A dump with @a use_deltas set cannot
3301  * be loaded by Subversion 1.0.x.
3302  *
3303  * If @a include_revprops is @c TRUE, output the revision properties as
3304  * well, otherwise omit them.
3305  *
3306  * If @a include_changes is @c TRUE, output the revision contents, i.e.
3307  * tree and node changes.
3308  *
3309  * If @a notify_func is not null, then call it with @a notify_baton and
3310  * with a notification structure in which the fields are set as follows.
3311  * (For a warning or error notification that does not apply to a specific
3312  * revision, the revision number is #SVN_INVALID_REVNUM.)
3313  *
3314  *   For each warning:
3315  *      @c action = #svn_repos_notify_warning
3316  *      @c warning and @c warning_str fields set accordingly
3317  *        ### TODO: Set @c revision = the revision or #SVN_INVALID_REVNUM?
3318  *
3319  *   For each successfully dumped revision:
3320  *      @c action = #svn_repos_notify_dump_rev_end
3321  *      @c revision = the revision
3322  *
3323  *   At the end:
3324  *      @c action = svn_repos_notify_verify_end
3325  *        ### Do we really need a callback to tell us the function we
3326  *            called has reached its end and is about to return?
3327  *
3328  *   At the end, if there were certain warnings previously:
3329  *      @c action = #svn_repos_notify_warning
3330  *      @c warning and @c warning_str fields set accordingly,
3331  *            reiterating the existence of previous warnings
3332  *        ### This is a presentation issue. Caller could do this itself.
3333  *
3334  * If @a filter_func is not @c NULL, it is called for each node being
3335  * dumped, allowing the caller to exclude it from dump.
3336  *
3337  * If @a cancel_func is not @c NULL, it is called periodically with
3338  * @a cancel_baton as argument to see if the client wishes to cancel
3339  * the dump.
3340  *
3341  * Use @a scratch_pool for temporary allocation.
3342  *
3343  * @since New in 1.10.
3344  */
3345 svn_error_t *
3346 svn_repos_dump_fs4(svn_repos_t *repos,
3347                    svn_stream_t *stream,
3348                    svn_revnum_t start_rev,
3349                    svn_revnum_t end_rev,
3350                    svn_boolean_t incremental,
3351                    svn_boolean_t use_deltas,
3352                    svn_boolean_t include_revprops,
3353                    svn_boolean_t include_changes,
3354                    svn_repos_notify_func_t notify_func,
3355                    void *notify_baton,
3356                    svn_repos_dump_filter_func_t filter_func,
3357                    void *filter_baton,
3358                    svn_cancel_func_t cancel_func,
3359                    void *cancel_baton,
3360                    apr_pool_t *pool);
3361 
3362 /**
3363  * Similar to svn_repos_dump_fs4(), but with @a include_revprops and
3364  * @a include_changes both set to @c TRUE and @a filter_func and
3365  * @a filter_baton set to @c NULL.
3366  *
3367  * @since New in 1.7.
3368  * @deprecated Provided for backward compatibility with the 1.9 API.
3369  */
3370 SVN_DEPRECATED
3371 svn_error_t *
3372 svn_repos_dump_fs3(svn_repos_t *repos,
3373                    svn_stream_t *dumpstream,
3374                    svn_revnum_t start_rev,
3375                    svn_revnum_t end_rev,
3376                    svn_boolean_t incremental,
3377                    svn_boolean_t use_deltas,
3378                    svn_repos_notify_func_t notify_func,
3379                    void *notify_baton,
3380                    svn_cancel_func_t cancel_func,
3381                    void *cancel_baton,
3382                    apr_pool_t *scratch_pool);
3383 
3384 /**
3385  * Similar to svn_repos_dump_fs3(), but with a feedback_stream instead of
3386  * handling feedback via the notify_func handler
3387  *
3388  * @since New in 1.1.
3389  * @deprecated Provided for backward compatibility with the 1.6 API.
3390  */
3391 SVN_DEPRECATED
3392 svn_error_t *
3393 svn_repos_dump_fs2(svn_repos_t *repos,
3394                    svn_stream_t *dumpstream,
3395                    svn_stream_t *feedback_stream,
3396                    svn_revnum_t start_rev,
3397                    svn_revnum_t end_rev,
3398                    svn_boolean_t incremental,
3399                    svn_boolean_t use_deltas,
3400                    svn_cancel_func_t cancel_func,
3401                    void *cancel_baton,
3402                    apr_pool_t *pool);
3403 
3404 /**
3405  * Similar to svn_repos_dump_fs2(), but with the @a use_deltas
3406  * parameter always set to @c FALSE.
3407  *
3408  * @deprecated Provided for backward compatibility with the 1.0 API.
3409  */
3410 SVN_DEPRECATED
3411 svn_error_t *
3412 svn_repos_dump_fs(svn_repos_t *repos,
3413                   svn_stream_t *dumpstream,
3414                   svn_stream_t *feedback_stream,
3415                   svn_revnum_t start_rev,
3416                   svn_revnum_t end_rev,
3417                   svn_boolean_t incremental,
3418                   svn_cancel_func_t cancel_func,
3419                   void *cancel_baton,
3420                   apr_pool_t *pool);
3421 
3422 
3423 /**
3424  * Read and parse dumpfile-formatted @a dumpstream, reconstructing
3425  * filesystem revisions in already-open @a repos, handling uuids in
3426  * accordance with @a uuid_action.  Use @a pool for all allocation.
3427  *
3428  * If the dumpstream contains copy history that is unavailable in the
3429  * repository, an error will be thrown.
3430  *
3431  * The repository's UUID will be updated iff
3432  *   the dumpstream contains a UUID and
3433  *   @a uuid_action is not equal to #svn_repos_load_uuid_ignore and
3434  *   either the repository contains no revisions or
3435  *          @a uuid_action is equal to #svn_repos_load_uuid_force.
3436  *
3437  * If the dumpstream contains no UUID, then @a uuid_action is
3438  * ignored and the repository UUID is not touched.
3439  *
3440  * @a start_rev and @a end_rev act as filters, the lower and upper
3441  * (inclusive) range values of revisions in @a dumpstream which will
3442  * be loaded.  Either both of these values are #SVN_INVALID_REVNUM (in
3443  * which case no revision-based filtering occurs at all), or both are
3444  * valid revisions (where @a start_rev is older than or equivalent to
3445  * @a end_rev).
3446  *
3447  * If @a parent_dir is not NULL, then the parser will reparent all the
3448  * loaded nodes, from root to @a parent_dir.  The directory @a parent_dir
3449  * must be an existing directory in the repository.
3450  *
3451  * If @a use_pre_commit_hook is set, call the repository's pre-commit
3452  * hook before committing each loaded revision.
3453  *
3454  * If @a use_post_commit_hook is set, call the repository's
3455  * post-commit hook after committing each loaded revision.
3456  *
3457  * If @a validate_props is set, then validate Subversion revision and
3458  * node properties (those in the svn: namespace) against established
3459  * rules for those things.
3460  *
3461  * If @a ignore_dates is set, ignore any revision datestamps found in
3462  * @a dumpstream, allowing the revisions created by the load process
3463  * to be stamped as if they were newly created via the normal commit
3464  * process.
3465  *
3466  * If @a normalize_props is set, attempt to normalize invalid Subversion
3467  * revision and node properties (those in the svn: namespace) so that
3468  * their values would follow the established rules for them.  For example,
3469  * for such properties, typically the value must be in UTF-8 with LF
3470  * line endings.
3471  *
3472  * @note The details or the performed normalizations are deliberately
3473  * left unspecified and may change in the future.
3474  *
3475  * If non-NULL, use @a notify_func and @a notify_baton to send notification
3476  * of events to the caller.
3477  *
3478  * If @a cancel_func is not @c NULL, it is called periodically with
3479  * @a cancel_baton as argument to see if the client wishes to cancel
3480  * the load.
3481  *
3482  * @since New in 1.10.
3483  */
3484 svn_error_t *
3485 svn_repos_load_fs6(svn_repos_t *repos,
3486                    svn_stream_t *dumpstream,
3487                    svn_revnum_t start_rev,
3488                    svn_revnum_t end_rev,
3489                    enum svn_repos_load_uuid uuid_action,
3490                    const char *parent_dir,
3491                    svn_boolean_t use_pre_commit_hook,
3492                    svn_boolean_t use_post_commit_hook,
3493                    svn_boolean_t validate_props,
3494                    svn_boolean_t ignore_dates,
3495                    svn_boolean_t normalize_props,
3496                    svn_repos_notify_func_t notify_func,
3497                    void *notify_baton,
3498                    svn_cancel_func_t cancel_func,
3499                    void *cancel_baton,
3500                    apr_pool_t *pool);
3501 
3502 /**
3503  * Similar to svn_repos_load_fs6(), but with the @a normalize_props
3504  * parameter always set to @c FALSE.
3505  *
3506  * @since New in 1.9.
3507  * @deprecated Provided for backward compatibility with the 1.9 API.
3508  */
3509 SVN_DEPRECATED
3510 svn_error_t *
3511 svn_repos_load_fs5(svn_repos_t *repos,
3512                    svn_stream_t *dumpstream,
3513                    svn_revnum_t start_rev,
3514                    svn_revnum_t end_rev,
3515                    enum svn_repos_load_uuid uuid_action,
3516                    const char *parent_dir,
3517                    svn_boolean_t use_pre_commit_hook,
3518                    svn_boolean_t use_post_commit_hook,
3519                    svn_boolean_t validate_props,
3520                    svn_boolean_t ignore_dates,
3521                    svn_repos_notify_func_t notify_func,
3522                    void *notify_baton,
3523                    svn_cancel_func_t cancel_func,
3524                    void *cancel_baton,
3525                    apr_pool_t *pool);
3526 
3527 /** Similar to svn_repos_load_fs5(), but with @a ignore_dates
3528  * always passed as FALSE.
3529  *
3530  * @since New in 1.8.
3531  * @deprecated Provided for backward compatibility with the 1.8 API.
3532  */
3533 SVN_DEPRECATED
3534 svn_error_t *
3535 svn_repos_load_fs4(svn_repos_t *repos,
3536                    svn_stream_t *dumpstream,
3537                    svn_revnum_t start_rev,
3538                    svn_revnum_t end_rev,
3539                    enum svn_repos_load_uuid uuid_action,
3540                    const char *parent_dir,
3541                    svn_boolean_t use_pre_commit_hook,
3542                    svn_boolean_t use_post_commit_hook,
3543                    svn_boolean_t validate_props,
3544                    svn_repos_notify_func_t notify_func,
3545                    void *notify_baton,
3546                    svn_cancel_func_t cancel_func,
3547                    void *cancel_baton,
3548                    apr_pool_t *pool);
3549 
3550 /** Similar to svn_repos_load_fs4(), but with @a start_rev and @a
3551  * end_rev always passed as #SVN_INVALID_REVNUM.
3552  *
3553  * @since New in 1.7.
3554  * @deprecated Provided for backward compatibility with the 1.7 API.
3555  */
3556 SVN_DEPRECATED
3557 svn_error_t *
3558 svn_repos_load_fs3(svn_repos_t *repos,
3559                    svn_stream_t *dumpstream,
3560                    enum svn_repos_load_uuid uuid_action,
3561                    const char *parent_dir,
3562                    svn_boolean_t use_pre_commit_hook,
3563                    svn_boolean_t use_post_commit_hook,
3564                    svn_boolean_t validate_props,
3565                    svn_repos_notify_func_t notify_func,
3566                    void *notify_baton,
3567                    svn_cancel_func_t cancel_func,
3568                    void *cancel_baton,
3569                    apr_pool_t *pool);
3570 
3571 /**
3572  * Similar to svn_repos_load_fs3(), but with @a feedback_stream in
3573  * place of the #svn_repos_notify_func_t and baton and with
3574  * @a validate_props always FALSE.
3575  *
3576  * @since New in 1.2.
3577  * @deprecated Provided for backward compatibility with the 1.6 API.
3578  */
3579 SVN_DEPRECATED
3580 svn_error_t *
3581 svn_repos_load_fs2(svn_repos_t *repos,
3582                    svn_stream_t *dumpstream,
3583                    svn_stream_t *feedback_stream,
3584                    enum svn_repos_load_uuid uuid_action,
3585                    const char *parent_dir,
3586                    svn_boolean_t use_pre_commit_hook,
3587                    svn_boolean_t use_post_commit_hook,
3588                    svn_cancel_func_t cancel_func,
3589                    void *cancel_baton,
3590                    apr_pool_t *pool);
3591 
3592 /**
3593  * Similar to svn_repos_load_fs2(), but with @a use_pre_commit_hook and
3594  * @a use_post_commit_hook always @c FALSE.
3595  *
3596  * @deprecated Provided for backward compatibility with the 1.1 API.
3597  */
3598 SVN_DEPRECATED
3599 svn_error_t *
3600 svn_repos_load_fs(svn_repos_t *repos,
3601                   svn_stream_t *dumpstream,
3602                   svn_stream_t *feedback_stream,
3603                   enum svn_repos_load_uuid uuid_action,
3604                   const char *parent_dir,
3605                   svn_cancel_func_t cancel_func,
3606                   void *cancel_baton,
3607                   apr_pool_t *pool);
3608 
3609 /**
3610  * Read and parse dumpfile-formatted @a dumpstream, extracting the
3611  * revision properties from it and apply them to the already-open
3612  * @a repos.  Use @a scratch_pool for temporary allocations.
3613  *
3614  * If, after filtering by the @a start_rev and @a end_rev, the dumpstream
3615  * contains revisions missing in @a repos, an error will be thrown.
3616  *
3617  * @a start_rev and @a end_rev act as filters, the lower and upper
3618  * (inclusive) range values of revisions in @a dumpstream which will
3619  * be loaded.  Either both of these values are #SVN_INVALID_REVNUM (in
3620  * which case no revision-based filtering occurs at all), or both are
3621  * valid revisions (where @a start_rev is older than or equivalent to
3622  * @a end_rev).
3623  *
3624  * If @a validate_props is set, then validate Subversion revision
3625  * properties (those in the svn: namespace) against established
3626  * rules for those things.
3627  *
3628  * If @a ignore_dates is set, ignore any revision datestamps found in
3629  * @a dumpstream, keeping whatever timestamps the revisions currently
3630  * have.
3631  *
3632  * If @a normalize_props is set, attempt to normalize invalid Subversion
3633  * revision and node properties (those in the svn: namespace) so that
3634  * their values would follow the established rules for them.  For example,
3635  * for such properties, typically the value must be in UTF-8 with LF
3636  * line endings.
3637  *
3638  * @note The details or the performed normalizations are deliberately
3639  * left unspecified and may change in the future.
3640  *
3641  * If non-NULL, use @a notify_func and @a notify_baton to send notification
3642  * of events to the caller.
3643  *
3644  * If @a cancel_func is not @c NULL, it is called periodically with
3645  * @a cancel_baton as argument to see if the client wishes to cancel
3646  * the load.
3647  *
3648  * @remark No repository hooks will be triggered.
3649  *
3650  * @since New in 1.10.
3651  */
3652 svn_error_t *
3653 svn_repos_load_fs_revprops(svn_repos_t *repos,
3654                            svn_stream_t *dumpstream,
3655                            svn_revnum_t start_rev,
3656                            svn_revnum_t end_rev,
3657                            svn_boolean_t validate_props,
3658                            svn_boolean_t ignore_dates,
3659                            svn_boolean_t normalize_props,
3660                            svn_repos_notify_func_t notify_func,
3661                            void *notify_baton,
3662                            svn_cancel_func_t cancel_func,
3663                            void *cancel_baton,
3664                            apr_pool_t *scratch_pool);
3665 
3666 /**
3667  * A vtable that is driven by svn_repos_parse_dumpstream3().
3668  *
3669  * @since New in 1.8.
3670  */
3671 typedef struct svn_repos_parse_fns3_t
3672 {
3673   /** The parser has discovered a new "magic header" record within the
3674    * parsing session represented by @a parse_baton.  The dump-format
3675    * version number is @a version.
3676    */
3677   svn_error_t *(*magic_header_record)(int version,
3678                                       void *parse_baton,
3679                                       apr_pool_t *pool);
3680 
3681   /** The parser has discovered a new uuid record within the parsing
3682    * session represented by @a parse_baton.  The uuid's value is
3683    * @a uuid, and it is allocated in @a pool.
3684    */
3685   svn_error_t *(*uuid_record)(const char *uuid,
3686                               void *parse_baton,
3687                               apr_pool_t *pool);
3688 
3689   /** The parser has discovered a new revision record within the
3690    * parsing session represented by @a parse_baton.  All the headers are
3691    * placed in @a headers (allocated in @a pool), which maps <tt>const
3692    * char *</tt> header-name ==> <tt>const char *</tt> header-value.
3693    * The @a revision_baton received back (also allocated in @a pool)
3694    * represents the revision.
3695    */
3696   svn_error_t *(*new_revision_record)(void **revision_baton,
3697                                       apr_hash_t *headers,
3698                                       void *parse_baton,
3699                                       apr_pool_t *pool);
3700 
3701   /** The parser has discovered a new node record within the current
3702    * revision represented by @a revision_baton.  All the headers are
3703    * placed in @a headers (as with @c new_revision_record), allocated in
3704    * @a pool.  The @a node_baton received back is allocated in @a pool
3705    * and represents the node.
3706    */
3707   svn_error_t *(*new_node_record)(void **node_baton,
3708                                   apr_hash_t *headers,
3709                                   void *revision_baton,
3710                                   apr_pool_t *pool);
3711 
3712   /** For a given @a revision_baton, set a property @a name to @a value. */
3713   svn_error_t *(*set_revision_property)(void *revision_baton,
3714                                         const char *name,
3715                                         const svn_string_t *value);
3716 
3717   /** For a given @a node_baton, set a property @a name to @a value. */
3718   svn_error_t *(*set_node_property)(void *node_baton,
3719                                     const char *name,
3720                                     const svn_string_t *value);
3721 
3722   /** For a given @a node_baton, delete property @a name. */
3723   svn_error_t *(*delete_node_property)(void *node_baton, const char *name);
3724 
3725   /** For a given @a node_baton, remove all properties. */
3726   svn_error_t *(*remove_node_props)(void *node_baton);
3727 
3728   /** For a given @a node_baton, set @a stream to a writable stream
3729    * capable of receiving the node's fulltext.  The parser will write
3730    * the fulltext to the stream and then close the stream to signal
3731    * completion.
3732    *
3733    * If a @c NULL is returned instead of a stream, the vtable is
3734    * indicating that no text is desired, and the parser will not
3735    * attempt to send it.
3736    */
3737   svn_error_t *(*set_fulltext)(svn_stream_t **stream,
3738                                void *node_baton);
3739 
3740   /** For a given @a node_baton, set @a handler and @a handler_baton
3741    * to a window handler and baton capable of receiving a delta
3742    * against the node's previous contents.  The parser will send all
3743    * the windows of data to this handler, and will then send a NULL
3744    * window to signal completion.
3745    *
3746    * If a @c NULL is returned instead of a handler, the vtable is
3747    * indicating that no delta is desired, and the parser will not
3748    * attempt to send it.
3749    */
3750   svn_error_t *(*apply_textdelta)(svn_txdelta_window_handler_t *handler,
3751                                   void **handler_baton,
3752                                   void *node_baton);
3753 
3754   /** The parser has reached the end of the current node represented by
3755    * @a node_baton, it can be freed.
3756    */
3757   svn_error_t *(*close_node)(void *node_baton);
3758 
3759   /** The parser has reached the end of the current revision
3760    * represented by @a revision_baton.  In other words, there are no more
3761    * changed nodes within the revision.  The baton can be freed.
3762    */
3763   svn_error_t *(*close_revision)(void *revision_baton);
3764 
3765 } svn_repos_parse_fns3_t;
3766 
3767 
3768 /**
3769  * Read and parse dumpfile-formatted @a stream, calling callbacks in
3770  * @a parse_fns/@a parse_baton, and using @a pool for allocations.
3771  *
3772  * If @a deltas_are_text is @c TRUE, handle text-deltas with the @a
3773  * set_fulltext callback.  This is useful when manipulating a dump
3774  * stream without loading it.  Otherwise handle text-deltas with the
3775  * @a apply_textdelta callback.
3776  *
3777  * If @a cancel_func is not @c NULL, it is called periodically with
3778  * @a cancel_baton as argument to see if the client wishes to cancel
3779  * the dump.
3780  *
3781  * This parser has built-in knowledge of the dumpfile format, but only
3782  * in a limited sense:
3783  *
3784  *    * it recognizes the "magic" format-version header.
3785  *
3786  *    * it recognizes the UUID header.
3787  *
3788  *    * it recognizes revision and node records by looking for either
3789  *      a REVISION_NUMBER or NODE_PATH headers.
3790  *
3791  *    * it recognizes the CONTENT-LENGTH headers, so it knows if and
3792  *      how to suck up the content body.
3793  *
3794  *    * it knows how to parse a content body into two parts:  props
3795  *      and text, and pass the pieces to the vtable.
3796  *
3797  * This is enough knowledge to make it easy on vtable implementors,
3798  * but still allow expansion of the format: most headers do not have
3799  * to be handled explicitly.
3800  *
3801  * ### [JAF] Wouldn't it be more efficient to support a start/end rev
3802  *     range here than only supporting it in receivers such as
3803  *     svn_repos_get_fs_build_parser4()? This parser could then skip over
3804  *     chunks of the input stream before the oldest required rev, and
3805  *     could stop reading entirely after the youngest required rev.
3806  *
3807  * @since New in 1.8.
3808 
3809  * @since Starting in 1.10, @a parse_fns may contain NULL pointers for
3810  * those callbacks that the caller is not interested in.
3811  */
3812 svn_error_t *
3813 svn_repos_parse_dumpstream3(svn_stream_t *stream,
3814                             const svn_repos_parse_fns3_t *parse_fns,
3815                             void *parse_baton,
3816                             svn_boolean_t deltas_are_text,
3817                             svn_cancel_func_t cancel_func,
3818                             void *cancel_baton,
3819                             apr_pool_t *pool);
3820 
3821 
3822 /**
3823  * Set @a *parser and @a *parse_baton to a vtable parser which commits new
3824  * revisions to the fs in @a repos.  The constructed parser will treat
3825  * UUID records in a manner consistent with @a uuid_action.  Use @a pool
3826  * to operate on the fs.
3827  *
3828  * @a start_rev and @a end_rev act as filters, the lower and upper
3829  * (inclusive) range values of revisions which will
3830  * be loaded.  Either both of these values are #SVN_INVALID_REVNUM (in
3831  * which case no revision-based filtering occurs at all), or both are
3832  * valid revisions (where @a start_rev is older than or equivalent to
3833  * @a end_rev).  They refer to dump stream revision numbers rather than
3834  * committed revision numbers.
3835  *
3836  * If @a use_history is true, then when the parser encounters a node that
3837  * is added-with-history, it will require 'copy-from' history to exist in
3838  * the repository at the relative (adjusted) copy-from revision and path.
3839  * It will perform a copy from that source location, and will fail if no
3840  * suitable source exists there. If @a use_history is false, then it will
3841  * instead convert every copy to a plain add.
3842  *
3843  * ### The 'use_history=FALSE' case is unused and untested in Subversion.
3844  *     It seems to me it would not work with a deltas dumpfile (a driver
3845  *     that calls the @c apply_textdelta method), as it would not have
3846  *     access to the delta base text.
3847  *
3848  * If @a use_pre_commit_hook is set, call the repository's pre-commit
3849  * hook before committing each loaded revision.
3850  *
3851  * If @a use_post_commit_hook is set, call the repository's
3852  * post-commit hook after committing each loaded revision.
3853  *
3854  * If @a validate_props is set, then validate Subversion revision and
3855  * node properties (those in the svn: namespace) against established
3856  * rules for those things.
3857  *
3858  * If @a ignore_dates is set, ignore any revision datestamps found in
3859  * @a dumpstream, allowing the revisions created by the load process
3860  * to be stamped as if they were newly created via the normal commit
3861  * process.
3862  *
3863  * If @a normalize_props is set, attempt to normalize invalid Subversion
3864  * revision and node properties (those in the svn: namespace) so that
3865  * their values would follow the established rules for them.  For example,
3866  * for such properties, typically the value must be in UTF-8 with LF
3867  * line endings.
3868  *
3869  * @note The details or the performed normalizations are deliberately
3870  * left unspecified and may change in the future.
3871  *
3872  * If @a parent_dir is not NULL, then the parser will reparent all the
3873  * loaded nodes, from root to @a parent_dir.  The directory @a parent_dir
3874  * must be an existing directory in the repository.
3875  *
3876  * @since New in 1.10.
3877  */
3878 svn_error_t *
3879 svn_repos_get_fs_build_parser6(const svn_repos_parse_fns3_t **parser,
3880                                void **parse_baton,
3881                                svn_repos_t *repos,
3882                                svn_revnum_t start_rev,
3883                                svn_revnum_t end_rev,
3884                                svn_boolean_t use_history,
3885                                svn_boolean_t validate_props,
3886                                enum svn_repos_load_uuid uuid_action,
3887                                const char *parent_dir,
3888                                svn_boolean_t use_pre_commit_hook,
3889                                svn_boolean_t use_post_commit_hook,
3890                                svn_boolean_t ignore_dates,
3891                                svn_boolean_t normalize_props,
3892                                svn_repos_notify_func_t notify_func,
3893                                void *notify_baton,
3894                                apr_pool_t *pool);
3895 
3896 /**
3897  * Similar to svn_repos_get_fs_build_parser6(), but with the
3898  * @a normalize_props parameter always set to @c FALSE.
3899  *
3900  * @since New in 1.9.
3901  * @deprecated Provided for backward compatibility with the 1.9 API.
3902  */
3903 SVN_DEPRECATED
3904 svn_error_t *
3905 svn_repos_get_fs_build_parser5(const svn_repos_parse_fns3_t **parser,
3906                                void **parse_baton,
3907                                svn_repos_t *repos,
3908                                svn_revnum_t start_rev,
3909                                svn_revnum_t end_rev,
3910                                svn_boolean_t use_history,
3911                                svn_boolean_t validate_props,
3912                                enum svn_repos_load_uuid uuid_action,
3913                                const char *parent_dir,
3914                                svn_boolean_t use_pre_commit_hook,
3915                                svn_boolean_t use_post_commit_hook,
3916                                svn_boolean_t ignore_dates,
3917                                svn_repos_notify_func_t notify_func,
3918                                void *notify_baton,
3919                                apr_pool_t *pool);
3920 
3921 /**
3922  * Similar to svn_repos_get_fs_build_parser5(), but with the
3923  * @c use_pre_commit_hook, @c use_post_commit_hook and @c ignore_dates
3924  * arguments all false.
3925  *
3926  * @since New in 1.8.
3927  * @deprecated Provided for backward compatibility with the 1.8 API.
3928  */
3929 SVN_DEPRECATED
3930 svn_error_t *
3931 svn_repos_get_fs_build_parser4(const svn_repos_parse_fns3_t **parser,
3932                                void **parse_baton,
3933                                svn_repos_t *repos,
3934                                svn_revnum_t start_rev,
3935                                svn_revnum_t end_rev,
3936                                svn_boolean_t use_history,
3937                                svn_boolean_t validate_props,
3938                                enum svn_repos_load_uuid uuid_action,
3939                                const char *parent_dir,
3940                                svn_repos_notify_func_t notify_func,
3941                                void *notify_baton,
3942                                apr_pool_t *pool);
3943 
3944 
3945 
3946 /**
3947  * A vtable that is driven by svn_repos_parse_dumpstream2().
3948  * Similar to #svn_repos_parse_fns3_t except that it lacks
3949  * the magic_header_record callback.
3950  *
3951  * @deprecated Provided for backward compatibility with the 1.7 API.
3952  */
3953 typedef struct svn_repos_parse_fns2_t
3954 {
3955   /** Same as #svn_repos_parse_fns3_t.new_revision_record. */
3956   svn_error_t *(*new_revision_record)(void **revision_baton,
3957                                       apr_hash_t *headers,
3958                                       void *parse_baton,
3959                                       apr_pool_t *pool);
3960   /** Same as #svn_repos_parse_fns3_t.uuid_record. */
3961   svn_error_t *(*uuid_record)(const char *uuid,
3962                               void *parse_baton,
3963                               apr_pool_t *pool);
3964   /** Same as #svn_repos_parse_fns3_t.new_node_record. */
3965   svn_error_t *(*new_node_record)(void **node_baton,
3966                                   apr_hash_t *headers,
3967                                   void *revision_baton,
3968                                   apr_pool_t *pool);
3969   /** Same as #svn_repos_parse_fns3_t.set_revision_property. */
3970   svn_error_t *(*set_revision_property)(void *revision_baton,
3971                                         const char *name,
3972                                         const svn_string_t *value);
3973   /** Same as #svn_repos_parse_fns3_t.set_node_property. */
3974   svn_error_t *(*set_node_property)(void *node_baton,
3975                                     const char *name,
3976                                     const svn_string_t *value);
3977   /** Same as #svn_repos_parse_fns3_t.delete_node_property. */
3978   svn_error_t *(*delete_node_property)(void *node_baton,
3979                                        const char *name);
3980   /** Same as #svn_repos_parse_fns3_t.remove_node_props. */
3981   svn_error_t *(*remove_node_props)(void *node_baton);
3982   /** Same as #svn_repos_parse_fns3_t.set_fulltext. */
3983   svn_error_t *(*set_fulltext)(svn_stream_t **stream,
3984                                void *node_baton);
3985   /** Same as #svn_repos_parse_fns3_t.apply_textdelta. */
3986   svn_error_t *(*apply_textdelta)(svn_txdelta_window_handler_t *handler,
3987                                   void **handler_baton,
3988                                   void *node_baton);
3989   /** Same as #svn_repos_parse_fns3_t.close_node. */
3990   svn_error_t *(*close_node)(void *node_baton);
3991   /** Same as #svn_repos_parse_fns3_t.close_revision. */
3992   svn_error_t *(*close_revision)(void *revision_baton);
3993 } svn_repos_parse_fns2_t;
3994 
3995 /** @deprecated Provided for backward compatibility with the 1.7 API. */
3996 typedef svn_repos_parse_fns2_t svn_repos_parser_fns2_t;
3997 
3998 
3999 /**
4000  * A vtable that is driven by svn_repos_parse_dumpstream().
4001  * Similar to #svn_repos_parse_fns2_t except that it lacks
4002  * the delete_node_property and apply_textdelta callbacks.
4003  *
4004  * @deprecated Provided for backward compatibility with the 1.0 API.
4005  */
4006 typedef struct svn_repos_parse_fns_t
4007 {
4008   /** Same as #svn_repos_parse_fns2_t.new_revision_record. */
4009   svn_error_t *(*new_revision_record)(void **revision_baton,
4010                                       apr_hash_t *headers,
4011                                       void *parse_baton,
4012                                       apr_pool_t *pool);
4013   /** Same as #svn_repos_parse_fns2_t.uuid_record. */
4014   svn_error_t *(*uuid_record)(const char *uuid,
4015                               void *parse_baton,
4016                               apr_pool_t *pool);
4017   /** Same as #svn_repos_parse_fns2_t.new_node_record. */
4018   svn_error_t *(*new_node_record)(void **node_baton,
4019                                   apr_hash_t *headers,
4020                                   void *revision_baton,
4021                                   apr_pool_t *pool);
4022   /** Same as #svn_repos_parse_fns2_t.set_revision_property. */
4023   svn_error_t *(*set_revision_property)(void *revision_baton,
4024                                         const char *name,
4025                                         const svn_string_t *value);
4026   /** Same as #svn_repos_parse_fns2_t.set_node_property. */
4027   svn_error_t *(*set_node_property)(void *node_baton,
4028                                     const char *name,
4029                                     const svn_string_t *value);
4030   /** Same as #svn_repos_parse_fns2_t.remove_node_props. */
4031   svn_error_t *(*remove_node_props)(void *node_baton);
4032   /** Same as #svn_repos_parse_fns2_t.set_fulltext. */
4033   svn_error_t *(*set_fulltext)(svn_stream_t **stream,
4034                                void *node_baton);
4035   /** Same as #svn_repos_parse_fns2_t.close_node. */
4036   svn_error_t *(*close_node)(void *node_baton);
4037   /** Same as #svn_repos_parse_fns2_t.close_revision. */
4038   svn_error_t *(*close_revision)(void *revision_baton);
4039 } svn_repos_parser_fns_t;
4040 
4041 
4042 /**
4043  * Similar to svn_repos_parse_dumpstream3(), but uses the more limited
4044  * #svn_repos_parser_fns2_t vtable type.
4045  *
4046  * @deprecated Provided for backward compatibility with the 1.7 API.
4047  */
4048 SVN_DEPRECATED
4049 svn_error_t *
4050 svn_repos_parse_dumpstream2(svn_stream_t *stream,
4051                             const svn_repos_parser_fns2_t *parse_fns,
4052                             void *parse_baton,
4053                             svn_cancel_func_t cancel_func,
4054                             void *cancel_baton,
4055                             apr_pool_t *pool);
4056 
4057 /**
4058  * Similar to svn_repos_parse_dumpstream2(), but uses the more limited
4059  * #svn_repos_parser_fns_t vtable type.
4060  *
4061  * @deprecated Provided for backward compatibility with the 1.0 API.
4062  */
4063 SVN_DEPRECATED
4064 svn_error_t *
4065 svn_repos_parse_dumpstream(svn_stream_t *stream,
4066                            const svn_repos_parser_fns_t *parse_fns,
4067                            void *parse_baton,
4068                            svn_cancel_func_t cancel_func,
4069                            void *cancel_baton,
4070                            apr_pool_t *pool);
4071 
4072 /**
4073  * Similar to svn_repos_get_fs_build_parser4(), but with @a start_rev
4074  * and @a end_rev always passed as #SVN_INVALID_REVNUM, and yielding
4075  * the more limited svn_repos_parse_fns2_t.
4076  *
4077  * @since New in 1.7.
4078  * @deprecated Provided for backward compatibility with the 1.7 API.
4079  */
4080 SVN_DEPRECATED
4081 svn_error_t *
4082 svn_repos_get_fs_build_parser3(const svn_repos_parse_fns2_t **parser,
4083                                void **parse_baton,
4084                                svn_repos_t *repos,
4085                                svn_boolean_t use_history,
4086                                svn_boolean_t validate_props,
4087                                enum svn_repos_load_uuid uuid_action,
4088                                const char *parent_dir,
4089                                svn_repos_notify_func_t notify_func,
4090                                void *notify_baton,
4091                                apr_pool_t *pool);
4092 
4093 /**
4094  * Similar to svn_repos_get_fs_build_parser3(), but with @a outstream
4095  * in place if a #svn_repos_notify_func_t and baton and with
4096  * @a validate_props always FALSE.
4097  *
4098  * @since New in 1.1.
4099  * @deprecated Provided for backward compatibility with the 1.6 API.
4100  */
4101 SVN_DEPRECATED
4102 svn_error_t *
4103 svn_repos_get_fs_build_parser2(const svn_repos_parse_fns2_t **parser,
4104                                void **parse_baton,
4105                                svn_repos_t *repos,
4106                                svn_boolean_t use_history,
4107                                enum svn_repos_load_uuid uuid_action,
4108                                svn_stream_t *outstream,
4109                                const char *parent_dir,
4110                                apr_pool_t *pool);
4111 
4112 /**
4113  * Similar to svn_repos_get_fs_build_parser2(), but yields the more
4114  * limited svn_repos_parser_fns_t vtable type.
4115  *
4116  * @deprecated Provided for backward compatibility with the 1.0 API.
4117  */
4118 SVN_DEPRECATED
4119 svn_error_t *
4120 svn_repos_get_fs_build_parser(const svn_repos_parser_fns_t **parser,
4121                               void **parse_baton,
4122                               svn_repos_t *repos,
4123                               svn_boolean_t use_history,
4124                               enum svn_repos_load_uuid uuid_action,
4125                               svn_stream_t *outstream,
4126                               const char *parent_dir,
4127                               apr_pool_t *pool);
4128 
4129 
4130 /** @} */
4131 
4132 /** A data type which stores the authz information.
4133  *
4134  * @since New in 1.3.
4135  */
4136 typedef struct svn_authz_t svn_authz_t;
4137 
4138 /**
4139  * This should be called before any other authz function.
4140  *
4141  * @a pool must support multi-threaded access if the application will use
4142  * authz from multiple threads.
4143  *
4144  * @since New in 1.10.
4145  */
4146 svn_error_t *
4147 svn_repos_authz_initialize(apr_pool_t *pool);
4148 
4149 /**
4150  * Callback for reporting authz file parsing warnings.
4151  *
4152  * The implementation may use @a scratch_pool for temporary
4153  * allocations but should not assume that the lifetime of that pool
4154  * persists past the callback invocation.
4155  *
4156  * The implementation @e must @e not clear @a error.
4157  */
4158 typedef void (*svn_repos_authz_warning_func_t)(void *baton,
4159                                                const svn_error_t *error,
4160                                                apr_pool_t *scratch_pool);
4161 
4162 /**
4163  * Read authz configuration data from @a path (a dirent, an absolute file url
4164  * or a registry path) into @a *authz_p, allocated in @a pool.
4165  *
4166  * If @a groups_path (a dirent, an absolute file url, or a registry path) is
4167  * set, use the global groups parsed from it.
4168  *
4169  * If @a path or @a groups_path is not a valid authz rule file, then return
4170  * #SVN_ERR_AUTHZ_INVALID_CONFIG.  The contents of @a *authz_p is then
4171  * undefined.  If @a must_exist is TRUE, a missing authz or groups file
4172  * is also an error other than #SVN_ERR_AUTHZ_INVALID_CONFIG (exact error
4173  * depends on the access type).
4174  *
4175  * For efficient access of in-repository authz, you may provide @a repos_hint
4176  * which will be tried first and may remove the need to open a temporary
4177  * repository instance.  Otherwise, set it to NULL and the repositories will
4178  * be opened as needed.
4179  *
4180  * If the @a warning_func callback is not @c NULL, it is called
4181  * (with @a warning_baton) to report non-fatal warnings emitted by
4182  * the parser.
4183  *
4184  * @since New in 1.12.
4185  */
4186 svn_error_t *
4187 svn_repos_authz_read4(svn_authz_t **authz_p,
4188                       const char *path,
4189                       const char *groups_path,
4190                       svn_boolean_t must_exist,
4191                       svn_repos_t *repos_hint,
4192                       svn_repos_authz_warning_func_t warning_func,
4193                       void *warning_baton,
4194                       apr_pool_t *result_pool,
4195                       apr_pool_t *scratch_pool);
4196 
4197 /**
4198  * Similar to svn_repos_authz_read3(), but with @a warning_func and
4199  * @a warning_baton set to @c NULL.
4200  *
4201  * @since New in 1.10.
4202  * @deprecated Provided for backward compatibility with the 1.11 API.
4203  */
4204 SVN_DEPRECATED
4205 svn_error_t *
4206 svn_repos_authz_read3(svn_authz_t **authz_p,
4207                       const char *path,
4208                       const char *groups_path,
4209                       svn_boolean_t must_exist,
4210                       svn_repos_t *repos_hint,
4211                       apr_pool_t *result_pool,
4212                       apr_pool_t *scratch_pool);
4213 
4214 /**
4215  * Similar to svn_repos_authz_read3(), but with @a repos_hint set to @c NULL.
4216  *
4217  * @since New in 1.8.
4218  * @deprecated Provided for backward compatibility with the 1.9 API.
4219  */
4220 SVN_DEPRECATED
4221 svn_error_t *
4222 svn_repos_authz_read2(svn_authz_t **authz_p,
4223                       const char *path,
4224                       const char *groups_path,
4225                       svn_boolean_t must_exist,
4226                       apr_pool_t *pool);
4227 
4228 
4229 /**
4230  * Similar to svn_repos_authz_read2(), but with @a groups_path and @a
4231  * repos_root always passed as @c NULL.
4232  *
4233  * @since New in 1.3.
4234  * @deprecated Provided for backward compatibility with the 1.7 API.
4235  */
4236 SVN_DEPRECATED
4237 svn_error_t *
4238 svn_repos_authz_read(svn_authz_t **authz_p,
4239                      const char *file,
4240                      svn_boolean_t must_exist,
4241                      apr_pool_t *pool);
4242 
4243 /**
4244  * Read authz configuration data from @a stream into @a *authz_p,
4245  * allocated in @a result_pool.
4246  *
4247  * If @a groups_stream is set, use the global groups parsed from it.
4248  *
4249  * If the @a warning_func callback is not @c NULL, it is called
4250  * (with @a warning_baton) to report non-fatal warnings emitted by
4251  * the parser.
4252  *
4253  * Uses @a scratch_pool for temporary aloocations.
4254  *
4255  * @since New in 1.12.
4256  */
4257 svn_error_t *
4258 svn_repos_authz_parse2(svn_authz_t **authz_p,
4259                        svn_stream_t *stream,
4260                        svn_stream_t *groups_stream,
4261                        svn_repos_authz_warning_func_t warning_func,
4262                        void *warning_baton,
4263                        apr_pool_t *result_pool,
4264                        apr_pool_t *scratch_pool);
4265 
4266 /**
4267  * Similar to svn_repos_authz_parse2(), but with @a warning_func and
4268  * @a warning_baton set to @c NULL.
4269  *
4270  * @since New in 1.8.
4271  * @deprecated Provided for backward compatibility with the 1.11 API.
4272  */
4273 SVN_DEPRECATED
4274 svn_error_t *
4275 svn_repos_authz_parse(svn_authz_t **authz_p,
4276                       svn_stream_t *stream,
4277                       svn_stream_t *groups_stream,
4278                       apr_pool_t *pool);
4279 
4280 /**
4281  * Check whether @a user can access @a path in the repository @a
4282  * repos_name with the @a required_access.  @a authz lists the ACLs to
4283  * check against.  Set @a *access_granted to indicate if the requested
4284  * access is granted.
4285  *
4286  * If @a path is NULL, then check whether @a user has the @a
4287  * required_access anywhere in the repository.  Set @a *access_granted
4288  * to TRUE if at least one path is accessible with the @a
4289  * required_access.
4290  *
4291  * For compatibility with 1.6, and earlier, @a repos_name can be NULL
4292  * in which case it is equivalent to a @a repos_name of "".
4293  *
4294  * @note Presently, @a repos_name must byte-for-byte match the repos_name
4295  * specified in the authz file; it is treated as an opaque string, and not
4296  * as a dirent.
4297  *
4298  * @since New in 1.3.
4299  */
4300 svn_error_t *
4301 svn_repos_authz_check_access(svn_authz_t *authz,
4302                              const char *repos_name,
4303                              const char *path,
4304                              const char *user,
4305                              svn_repos_authz_access_t required_access,
4306                              svn_boolean_t *access_granted,
4307                              apr_pool_t *pool);
4308 
4309 
4310 
4311 /** Revision Access Levels
4312  *
4313  * Like most version control systems, access to versioned objects in
4314  * Subversion is determined on primarily path-based system.  Users either
4315  * do or don't have the ability to read a given path.
4316  *
4317  * However, unlike many version control systems where versioned objects
4318  * maintain their own distinct version information (revision numbers,
4319  * authors, log messages, change timestamps, etc.), Subversion binds
4320  * multiple paths changed as part of a single commit operation into a
4321  * set, calls the whole thing a revision, and hangs commit metadata
4322  * (author, date, log message, etc.) off of that revision.  So, commit
4323  * metadata is shared across all the paths changed as part of a given
4324  * commit operation.
4325  *
4326  * It is common (or, at least, we hope it is) for log messages to give
4327  * detailed information about changes made in the commit to which the log
4328  * message is attached.  Such information might include a mention of all
4329  * the files changed, what was changed in them, and so on.  But this
4330  * causes a problem when presenting information to readers who aren't
4331  * authorized to read every path in the repository.  Simply knowing that
4332  * a given path exists may be a security leak, even if the user can't see
4333  * the contents of the data located at that path.
4334  *
4335  * So Subversion does what it reasonably can to prevent the leak of this
4336  * information, and does so via a staged revision access policy.  A
4337  * reader can be said to have one of three levels of access to a given
4338  * revision's metadata, based solely on the reader's access rights to the
4339  * paths changed or copied in that revision:
4340  *
4341  *   'full access' -- Granted when the reader has access to all paths
4342  *      changed or copied in the revision, or when no paths were
4343  *      changed in the revision at all, this access level permits
4344  *      full visibility of all revision property names and values,
4345  *      and the full changed-paths information.
4346  *
4347  *   'no access' -- Granted when the reader does not have access to any
4348  *      paths changed or copied in the revision, this access level
4349  *      denies the reader access to all revision properties and all
4350  *      changed-paths information.
4351  *
4352  *   'partial access' -- Granted when the reader has access to at least
4353  *      one, but not all, of the paths changed or copied in the revision,
4354  *      this access level permits visibility of the svn:date and
4355  *      svn:author revision properties and only the paths of the
4356  *      changed-paths information to which the reader has access.
4357  *
4358  */
4359 
4360 
4361 /** An enum defining levels of revision access.
4362  *
4363  * @since New in 1.5.
4364  */
4365 typedef enum svn_repos_revision_access_level_t
4366 {
4367   /** no access allowed to the revision properties and all changed-paths
4368    * information. */
4369   svn_repos_revision_access_none,
4370   /** access granted to some (svn:date and svn:author) revision properties and
4371    * changed-paths information on paths the read has access to. */
4372   svn_repos_revision_access_partial,
4373   /** access granted to all revision properites and changed-paths
4374    * information. */
4375   svn_repos_revision_access_full
4376 }
4377 svn_repos_revision_access_level_t;
4378 
4379 
4380 /**
4381  * Set @a access to the access level granted for @a revision in @a
4382  * repos, as determined by consulting the @a authz_read_func callback
4383  * function and its associated @a authz_read_baton.
4384  *
4385  * @a authz_read_func may be @c NULL, in which case @a access will be
4386  * set to #svn_repos_revision_access_full.
4387  *
4388  * @since New in 1.5.
4389  */
4390 svn_error_t *
4391 svn_repos_check_revision_access(svn_repos_revision_access_level_t *access_level,
4392                                 svn_repos_t *repos,
4393                                 svn_revnum_t revision,
4394                                 svn_repos_authz_func_t authz_read_func,
4395                                 void *authz_read_baton,
4396                                 apr_pool_t *pool);
4397 
4398 
4399 #ifdef __cplusplus
4400 }
4401 #endif /* __cplusplus */
4402 
4403 #endif /* SVN_REPOS_H */
4404