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Don't try to read negative file sizes.

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Unknown W. Brackets 2014-11-06 08:45:33 -08:00
parent 5bb6395d2b
commit c085b9c082
1 changed files with 7 additions and 5 deletions
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12
Core/FileSystems/ISOFileSystem.cpp
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@ -566,28 +566,30 @@ size_t ISOFileSystem::ReadFile(u32 handle, u8 *pointer, s64 size)
_dbg_assert_msg_(FILESYS, (middleSize & 2047) == 0, "Remaining size should be aligned");
if (firstBlockSize != 0)
const u8 *const start = pointer;
if (firstBlockSize > 0)
{
blockDevice->ReadBlock(secNum++, theSector);
memcpy(pointer, theSector + firstBlockOffset, firstBlockSize);
pointer += firstBlockSize;
}
if (middleSize != 0)
if (middleSize > 0)
{
const u32 sectors = (u32)(middleSize / 2048);
blockDevice->ReadBlocks(secNum, sectors, pointer);
secNum += sectors;
pointer += middleSize;
}
if (lastBlockSize != 0)
if (lastBlockSize > 0)
{
blockDevice->ReadBlock(secNum++, theSector);
memcpy(pointer, theSector, lastBlockSize);
pointer += lastBlockSize;
}
e.seekPos += (unsigned int)size;
return (size_t)size;
size_t totalBytes = pointer - start;
e.seekPos += (unsigned int)totalBytes;
return (size_t)totalBytes;
}
else
{