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=== IContentMetaDatabase ===
=== IContentMetaDatabase ===
This is "nn::ncm::IContentMetaDatabase".
This is "nn::ncm::IContentMetaDatabase".
Note the official name for Meta Record is "ContentMetaKey".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 4 || ReadEntryContentRecordEntries || Takes a type-6 buffer to write [[NCA#Content_records|Content Record]] entries to, a [[NCA#Meta_records|Meta Record]], and a u32 index into the Content Record entries to start copying from. Returns a u32 entries_read.
| 4 || ReadEntryContentRecordEntries || Takes a type-6 buffer to write [[NCA#Content_records|Content Record]] entries to, a [[NCA#Meta_records|Meta Record]], and a u32 index into the Content Record entries to start copying from. Returns a u32 entries_read.
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| 5 || GetMetaRecords || Takes a type-6 buffer to write [[NCA#Meta_records|Meta Record]]s to, a u32 [[#Title_Types|Title Type]], a u64 TID, a u64 TID_LOW, and u64 TID_HIGH. Writes into the buffer all Meta Records with low <= record->title_id <= high, and record->type == type. Additionally requires record->title_id == TID, if record->type is Application, Patch, Add-On, or Delta.
| 5 || List || Takes a type-6 buffer to write [[NCA#Meta_records|Meta Record]]s to, a u32 [[#Title_Types|Title Type]], a u64 TID, a u64 TID_LOW, and u64 TID_HIGH. Writes into the buffer all Meta Records with low <= record->title_id <= high, and record->type == type. Additionally requires record->title_id == TID, if record->type is Application, Patch, Add-On, or Delta.
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| 6 || GetMetaRecord || Takes a u64 title id, and returns the [[NCA#Meta_records|Meta Record]] with the highest version field for that title id.
| 6 || GetMetaRecord || Takes a u64 title id, and returns the [[NCA#Meta_records|Meta Record]] with the highest version field for that title id.
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| 7 || [[#GetTitleUpdateRecords]] ||
| 7 || [[#ListApplication]] ||
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| 8 || IsEntryPresent || Takes a [[NCA#Meta_records|Meta Record]] and returns whether that record is present in the database.
| 8 || IsEntryPresent || Takes a [[NCA#Meta_records|Meta Record]] and returns whether that record is present in the database.
==== GetTitleUpdateRecords ====
==== ListApplication ====
Each 24-byte entry is as follows:
Each 24-byte entry (officially "ApplicationContentMetaKey") is as follows:
[[NCA#Meta_records|meta_record]] meta_record;
[[NCA#Meta_records|meta_record]] meta_record;
u64 base_title_id;
u64 base_title_id;