aaru-dps/libaaruformat
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Do not consider rewinded the first time block 0 is written.

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This commit is contained in:
Natalia Portillo
2025-10-20 01:13:14 +01:00
parent d6ea7db911
commit 94e44ef304
2 changed files with 35 additions and 24 deletions
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1
include/aaruformat/context.h
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@@ -292,6 +292,7 @@ typedef struct aaruformat_context
bool is_writing; ///< True if context opened/created for writing. bool is_writing; ///< True if context opened/created for writing.
bool rewinded; ///< True if stream has been rewound after open (write path). bool rewinded; ///< True if stream has been rewound after open (write path).
bool writing_long; ///< True if writing long sectors bool writing_long; ///< True if writing long sectors
bool block_zero_written; ///< True if block zero has been written (writing path).
/* Options */ /* Options */
uint32_t lzma_dict_size; ///< LZMA dictionary size (writing path). uint32_t lzma_dict_size; ///< LZMA dictionary size (writing path).

58
src/write.c
View File

@@ -150,19 +150,24 @@ AARU_EXPORT int32_t AARU_CALL aaruf_write_sector(void *context, uint64_t sector_
{ {
if(sector_address <= ctx->last_written_block) if(sector_address <= ctx->last_written_block)
{ {
TRACE("Rewinded"); if(sector_address == 0 && !ctx->block_zero_written)
ctx->rewinded = true; ctx->block_zero_written = true;
else
{
TRACE("Rewinded");
ctx->rewinded = true;
// Disable MD5 calculation // Disable MD5 calculation
if(ctx->calculating_md5) ctx->calculating_md5 = false; if(ctx->calculating_md5) ctx->calculating_md5 = false;
// Disable SHA1 calculation // Disable SHA1 calculation
if(ctx->calculating_sha1) ctx->calculating_sha1 = false; if(ctx->calculating_sha1) ctx->calculating_sha1 = false;
// Disable SHA256 calculation // Disable SHA256 calculation
if(ctx->calculating_sha256) ctx->calculating_sha256 = false; if(ctx->calculating_sha256) ctx->calculating_sha256 = false;
// Disable SpamSum calculation // Disable SpamSum calculation
if(ctx->calculating_spamsum) ctx->calculating_spamsum = false; if(ctx->calculating_spamsum) ctx->calculating_spamsum = false;
// Disable BLAKE3 calculation // Disable BLAKE3 calculation
if(ctx->calculating_blake3) ctx->calculating_blake3 = false; if(ctx->calculating_blake3) ctx->calculating_blake3 = false;
}
} }
else else
ctx->last_written_block = sector_address; ctx->last_written_block = sector_address;
@@ -642,19 +647,24 @@ AARU_EXPORT int32_t AARU_CALL aaruf_write_sector_long(void *context, uint64_t se
{ {
if(sector_address <= ctx->last_written_block) if(sector_address <= ctx->last_written_block)
{ {
TRACE("Rewinded"); if(sector_address == 0 && !ctx->block_zero_written)
ctx->rewinded = true; ctx->block_zero_written = true;
else
{
TRACE("Rewinded");
ctx->rewinded = true;
// Disable MD5 calculation // Disable MD5 calculation
if(ctx->calculating_md5) ctx->calculating_md5 = false; if(ctx->calculating_md5) ctx->calculating_md5 = false;
// Disable SHA1 calculation // Disable SHA1 calculation
if(ctx->calculating_sha1) ctx->calculating_sha1 = false; if(ctx->calculating_sha1) ctx->calculating_sha1 = false;
// Disable SHA256 calculation // Disable SHA256 calculation
if(ctx->calculating_sha256) ctx->calculating_sha256 = false; if(ctx->calculating_sha256) ctx->calculating_sha256 = false;
// Disable SpamSum calculation // Disable SpamSum calculation
if(ctx->calculating_spamsum) ctx->calculating_spamsum = false; if(ctx->calculating_spamsum) ctx->calculating_spamsum = false;
// Disable BLAKE3 calculation // Disable BLAKE3 calculation
if(ctx->calculating_blake3) ctx->calculating_blake3 = false; if(ctx->calculating_blake3) ctx->calculating_blake3 = false;
}
} }
else else
ctx->last_written_block = sector_address; ctx->last_written_block = sector_address;