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refs: implement removal of ref storages

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We're about to introduce logic to migrate ref storages. One part of the
migration will be to delete the files that are part of the old ref
storage format. We don't yet have a way to delete such data generically
across ref backends though.

Implement a new `delete` callback and expose it via a new
`ref_storage_delete()` function.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2024-06-06 07:29:39 +02:00
committed by Junio C Hamano
parent 1339cb3c47
commit 64a6dd8ffc
6 changed files with 146 additions and 0 deletions
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7
refs/refs-internal.h
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@ -517,6 +517,12 @@ typedef int ref_store_create_on_disk_fn(struct ref_store *refs,
int flags,
struct strbuf *err);
/*
* Remove the reference store from disk.
*/
typedef int ref_store_remove_on_disk_fn(struct ref_store *refs,
struct strbuf *err);
typedef int ref_transaction_prepare_fn(struct ref_store *refs,
struct ref_transaction *transaction,
struct strbuf *err);
@ -649,6 +655,7 @@ struct ref_storage_be {
ref_store_init_fn *init;
ref_store_release_fn *release;
ref_store_create_on_disk_fn *create_on_disk;
ref_store_remove_on_disk_fn *remove_on_disk;
ref_transaction_prepare_fn *transaction_prepare;
ref_transaction_finish_fn *transaction_finish;