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Implement bounds checking for sector addresses in read/write functions

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This commit is contained in:
Natalia Portillo
2025-10-02 17:29:13 +01:00
parent a8f39093bb
commit 87db877873
2 changed files with 45 additions and 8 deletions
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19
src/write.c
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@@ -93,9 +93,6 @@
*
* @warning The function may trigger automatic block closure, which can result in disk I/O
* operations and potential write errors even for seemingly simple sector writes.
*
* @warning No bounds checking is performed on sector_address. Writing beyond media limits
* may result in undefined behavior (TODO: implement bounds checking).
*/
int32_t aaruf_write_sector(void *context, uint64_t sector_address, bool negative, const uint8_t *data,
uint8_t sector_status, uint32_t length)
@@ -132,7 +129,21 @@ int32_t aaruf_write_sector(void *context, uint64_t sector_address, bool negative
return AARUF_READ_ONLY;
}
// TODO: Check not trying to write beyond media limits
if(negative && sector_address > ctx->userDataDdtHeader.negative - 1)
{
FATAL("Sector address out of bounds");
TRACE("Exiting aaruf_write_sector() = AARUF_ERROR_SECTOR_OUT_OF_BOUNDS");
return AARUF_ERROR_SECTOR_OUT_OF_BOUNDS;
}
if(!negative && sector_address > ctx->imageInfo.Sectors + ctx->userDataDdtHeader.overflow - 1)
{
FATAL("Sector address out of bounds");
TRACE("Exiting aaruf_write_sector() = AARUF_ERROR_SECTOR_OUT_OF_BOUNDS");
return AARUF_ERROR_SECTOR_OUT_OF_BOUNDS;
}
// TODO: Check rewinded for disabling checksums