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postgres/contrib/amcheck/verify_common.h

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amcheck: Move common routines into a separate module Before performing checks on an index, we need to take some safety measures that apply to all index AMs. This includes: * verifying that the index can be checked - Only selected AMs are supported by amcheck (right now only B-Tree). The index has to be valid and not a temporary index from another session. * changing (and then restoring) user's security context * obtaining proper locks on the index (and table, if needed) * discarding GUC changes from the index functions Until now this was implemented in the B-Tree amcheck module, but it's something every AM will have to do. So relocate the code into a new module verify_common for reuse. The shared steps are implemented by amcheck_lock_relation_and_check(), receiving the AM-specific verification as a callback. Custom parameters may be supplied using a pointer. Author: Andrey Borodin <amborodin@acm.org> Reviewed-By: José Villanova <jose.arthur@gmail.com> Reviewed-By: Aleksander Alekseev <aleksander@timescale.com> Reviewed-By: Nikolay Samokhvalov <samokhvalov@gmail.com> Reviewed-By: Andres Freund <andres@anarazel.de> Reviewed-By: Tomas Vondra <tomas@vondra.me> Reviewed-By: Mark Dilger <mark.dilger@enterprisedb.com> Reviewed-By: Peter Geoghegan <pg@bowt.ie> Reviewed-By: Kirill Reshke <reshkekirill@gmail.com> Discussion: https://postgr.es/m/45AC9B0A-2B45-40EE-B08F-BDCF5739D1E1%40yandex-team.ru
6 months ago
/*-------------------------------------------------------------------------
*
* amcheck.h
* Shared routines for amcheck verifications.
*
* Copyright (c) 2016-2025, PostgreSQL Global Development Group
*
* IDENTIFICATION
* contrib/amcheck/amcheck.h
*
*-------------------------------------------------------------------------
*/
#include "storage/bufpage.h"
#include "storage/lmgr.h"
#include "storage/lockdefs.h"
#include "utils/relcache.h"
#include "miscadmin.h"
amcheck: Remove unused IndexCheckableCallback typedef. Commit d70b17636dd introduced the IndexCheckableCallback typedef for a callback function, but it was never used. This commit removes the unused typedef to clean up dead code. Author: Fujii Masao <masao.fujii@gmail.com> Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru> Discussion: https://postgr.es/m/e1ea4e14-3b21-4e01-a5f2-0686883265df@oss.nttdata.com
2 months ago
/* Typedef for callback function for amcheck_lock_relation_and_check */
amcheck: Move common routines into a separate module Before performing checks on an index, we need to take some safety measures that apply to all index AMs. This includes: * verifying that the index can be checked - Only selected AMs are supported by amcheck (right now only B-Tree). The index has to be valid and not a temporary index from another session. * changing (and then restoring) user's security context * obtaining proper locks on the index (and table, if needed) * discarding GUC changes from the index functions Until now this was implemented in the B-Tree amcheck module, but it's something every AM will have to do. So relocate the code into a new module verify_common for reuse. The shared steps are implemented by amcheck_lock_relation_and_check(), receiving the AM-specific verification as a callback. Custom parameters may be supplied using a pointer. Author: Andrey Borodin <amborodin@acm.org> Reviewed-By: José Villanova <jose.arthur@gmail.com> Reviewed-By: Aleksander Alekseev <aleksander@timescale.com> Reviewed-By: Nikolay Samokhvalov <samokhvalov@gmail.com> Reviewed-By: Andres Freund <andres@anarazel.de> Reviewed-By: Tomas Vondra <tomas@vondra.me> Reviewed-By: Mark Dilger <mark.dilger@enterprisedb.com> Reviewed-By: Peter Geoghegan <pg@bowt.ie> Reviewed-By: Kirill Reshke <reshkekirill@gmail.com> Discussion: https://postgr.es/m/45AC9B0A-2B45-40EE-B08F-BDCF5739D1E1%40yandex-team.ru
6 months ago
typedef void (*IndexDoCheckCallback) (Relation rel,
Relation heaprel,
void *state,
bool readonly);
extern void amcheck_lock_relation_and_check(Oid indrelid,
Oid am_id,
IndexDoCheckCallback check,
LOCKMODE lockmode, void *state);