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Initialize index entries array and update index management for DDT entries

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This commit is contained in:
Natalia Portillo
2025-09-28 17:08:33 +01:00
parent 1fd250220a
commit 90ca1ee872
5 changed files with 230 additions and 7 deletions
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33
src/ddt/ddt_v2.c
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@@ -671,7 +671,7 @@ int32_t decode_ddt_multi_level_v2(aaruformatContext *ctx, uint64_t sectorAddress
if(buffer == NULL)
{
FATAL(stderr, "Cannot allocate memory for DDT, stopping...");
FATAL("Cannot allocate memory for DDT, stopping...");
TRACE("Exiting decode_ddt_multi_level_v2() = AARUF_ERROR_CANNOT_READ_BLOCK");
return AARUF_ERROR_CANNOT_READ_BLOCK;
}
@@ -977,6 +977,37 @@ void set_ddt_multi_level_v2(aaruformatContext *ctx, uint64_t sectorAddress, bool
return;
}
// Update index: remove old entry and add new one for the evicted secondary DDT
TRACE("Updating index for evicted secondary DDT");
// Remove old index entry for the cached DDT
if(ctx->cachedDdtOffset != 0)
{
TRACE("Removing old index entry for DDT at offset %" PRIu64, ctx->cachedDdtOffset);
IndexEntry *entry = NULL;
// Find and remove the old index entry
for(unsigned int i = 0; i < utarray_len(ctx->indexEntries); i++)
{
entry = (IndexEntry *)utarray_eltptr(ctx->indexEntries, i);
if(entry && entry->offset == ctx->cachedDdtOffset && entry->blockType == DeDuplicationTable2)
{
TRACE("Found old DDT index entry at position %u, removing", i);
utarray_erase(ctx->indexEntries, i, 1);
break;
}
}
}
// Add new index entry for the newly written secondary DDT
IndexEntry newDdtEntry;
newDdtEntry.blockType = DeDuplicationTable2;
newDdtEntry.dataType = UserData;
newDdtEntry.offset = endOfFile;
utarray_push_back(ctx->indexEntries, &newDdtEntry);
TRACE("Added new DDT index entry at offset %" PRIu64, endOfFile);
// Step 4: Update the primary level table entry and flush it back to file
uint64_t newSecondaryTableBlockOffset = endOfFile >> ctx->userDataDdtHeader.blockAlignmentShift;