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Handle FileIO Read/Write more like real hardware.

Browse source 
Fixes Issue 3761.
Fixes Issue 1749.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6718 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
j4ck.fr0st 2011-01-02 00:01:19 +00:00
parent 4bf07838a8
commit 63115ca2ef
1 changed files with 24 additions and 11 deletions
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35
Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_FileIO.cpp
View file

@ -114,9 +114,8 @@ bool CWII_IPC_HLE_Device_FileIO::Open(u32 _CommandAddress, u32 _Mode)
switch(_Mode)
{
case ISFS_OPEN_READ: m_pFileHandle = fopen(m_Filename.c_str(), "rb"); break;
// "r+b" is technically wrong, but OPEN_WRITE should not truncate the file as "wb" does.
case ISFS_OPEN_WRITE: m_pFileHandle = fopen(m_Filename.c_str(), "r+b"); break;
// MK Wii gets here corrupting its saves (truncating rksys.dat), however using rb+ mode works fine
// TODO : figure it properly...
case ISFS_OPEN_RW: m_pFileHandle = fopen(m_Filename.c_str(), "r+b"); break;
default: PanicAlert("FileIO: Unknown open mode : 0x%02x", _Mode); break;
}
@ -181,15 +180,22 @@ bool CWII_IPC_HLE_Device_FileIO::Seek(u32 _CommandAddress)
bool CWII_IPC_HLE_Device_FileIO::Read(u32 _CommandAddress)
{
u32 ReturnValue = 0;
u32 ReturnValue = FS_EACCESS;
u32 Address = Memory::Read_U32(_CommandAddress + 0xC); // Read to this memory address
u32 Size = Memory::Read_U32(_CommandAddress + 0x10);
if (m_pFileHandle != NULL)
{
INFO_LOG(WII_IPC_FILEIO, "FileIO: Read 0x%x bytes to 0x%08x from %s", Size, Address, m_Name.c_str());
ReturnValue = (u32)fread(Memory::GetPointer(Address), 1, Size, m_pFileHandle);
if ((ReturnValue != Size) && ferror(m_pFileHandle)) ReturnValue = FS_EACCESS;
if (m_Mode == ISFS_OPEN_WRITE)
{
WARN_LOG(WII_IPC_FILEIO, "FileIO: Attempted to read 0x%x bytes to 0x%08x on write-only file %s", Size, Address, m_Name.c_str());
}
else
{
INFO_LOG(WII_IPC_FILEIO, "FileIO: Read 0x%x bytes to 0x%08x from %s", Size, Address, m_Name.c_str());
ReturnValue = (u32)fread(Memory::GetPointer(Address), 1, Size, m_pFileHandle);
if ((ReturnValue != Size) && ferror(m_pFileHandle)) ReturnValue = FS_EACCESS;
}
}
else
{
@ -202,7 +208,7 @@ bool CWII_IPC_HLE_Device_FileIO::Read(u32 _CommandAddress)
bool CWII_IPC_HLE_Device_FileIO::Write(u32 _CommandAddress)
{
u32 ReturnValue = 0;
u32 ReturnValue = FS_EACCESS;
u32 Address = Memory::Read_U32(_CommandAddress + 0xC); // Write data from this memory address
u32 Size = Memory::Read_U32(_CommandAddress + 0x10);
@ -210,13 +216,20 @@ bool CWII_IPC_HLE_Device_FileIO::Write(u32 _CommandAddress)
if (m_pFileHandle)
{
size_t Result = fwrite(Memory::GetPointer(Address), Size, 1, m_pFileHandle);
if (m_Mode == ISFS_OPEN_READ)
{
WARN_LOG(WII_IPC_FILEIO, "FileIO: Attempted to write 0x%x bytes from 0x%08x to read-only file %s", Size, Address, m_Name.c_str());
}
else
{
size_t Result = fwrite(Memory::GetPointer(Address), Size, 1, m_pFileHandle);
#if MAX_LOGLEVEL >= DEBUG_LEVEL
_dbg_assert_msg_(WII_IPC_FILEIO, Result == 1, "fwrite failed");
_dbg_assert_msg_(WII_IPC_FILEIO, Result == 1, "fwrite failed");
#else
(void)Result;
(void)Result;
#endif
ReturnValue = (Result == 1) ? Size : FS_EACCESS;
ReturnValue = (Result == 1) ? Size : FS_EACCESS;
}
}
Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);