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Read uncompressed DDT v1 into memory.

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This commit is contained in:
Natalia Portillo
2025-11-26 03:20:58 +00:00
parent 58788beed1
commit 56bb631872
1 changed files with 15 additions and 15 deletions
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30
src/ddt/ddt_v1.c
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@@ -217,26 +217,26 @@ int32_t process_ddt_v1(aaruformat_context *ctx, IndexEntry *entry, bool *found_u
break;
// TODO: Check CRC
case None:
#ifdef __linux__
TRACE("Memory mapping deduplication table at position %" PRIu64, entry->offset + sizeof(ddt_header));
ctx->mapped_memory_ddt_size = sizeof(uint64_t) * ddt_header.entries;
ctx->user_data_ddt = mmap(NULL, ctx->mapped_memory_ddt_size, PROT_READ, MAP_SHARED,
fileno(ctx->imageStream), entry->offset + sizeof(ddt_header));
if(ctx->user_data_ddt == MAP_FAILED)
ctx->user_data_ddt = (uint64_t *)malloc(ddt_header.length);
if(ctx->user_data_ddt == NULL)
{
*found_user_data_ddt = false;
FATAL("Could not read map deduplication table.");
TRACE("Cannot allocate memory for DDT, continuing...");
break;
}
ctx->in_memory_ddt = false;
read_bytes = fread(ctx->user_data_ddt, 1, ddt_header.entries * sizeof(uint64_t), ctx->imageStream);
if(read_bytes != ddt_header.entries * sizeof(uint64_t))
{
free(ctx->user_data_ddt);
TRACE("Could not read deduplication table, continuing...");
break;
}
ctx->in_memory_ddt = true;
*found_user_data_ddt = true;
break;
#else // TODO: Implement
TRACE("Uncompressed DDT not yet implemented...");
*found_user_data_ddt = false;
break;
#endif
default:
TRACE("Found unknown compression type %d, continuing...", ddt_header.compression);
*found_user_data_ddt = false;