aaru-dps/libaaruformat
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Code Issues 3 Packages Projects Releases Wiki Activity

fix Mode 2 form detection in errored-suffix read path

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This commit is contained in:
Kevin Bortis
2026-03-31 19:40:47 +02:00
parent 3af5f1ec41
commit b88e71a865
1 changed files with 4 additions and 3 deletions
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7
src/read.c
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@@ -1855,8 +1855,8 @@ AARU_EXPORT int32_t AARU_CALL aaruf_read_sector_long(void *context, const uint64
else
{
// Mode 2 where ECC/EDC failed — restore user data + stored suffix.
// Check subheader (already copied to data+16) to determine form.
if(data[0x12] & 0x20)
// Check both subheader copies to match write path form detection.
if((data[0x12] & 0x20) || (data[0x16] & 0x20))
{
// Form 2: 2324 bytes user data, 4 bytes EDC suffix
memcpy(data + 24, bare_data, 2324);
@@ -1893,9 +1893,10 @@ AARU_EXPORT int32_t AARU_CALL aaruf_read_sector_long(void *context, const uint64
else
{
// Mode 2 where ECC/EDC failed — restore user data + stored suffix.
// Check both subheader copies to match write path form detection.
const uint32_t sfx_index =
(ctx->sector_suffix_ddt[corrected_sector_address] & CD_DFIX_MASK) - 1;
if(data[0x12] & 0x20)
if((data[0x12] & 0x20) || (data[0x16] & 0x20))
{
memcpy(data + 24, bare_data, 2324);
memcpy(data + 2348, ctx->sector_suffix_corrected + sfx_index * 288, 4);