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Fixes some file handling in IPC_HLE

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* change File::GetSize to fetch the size directly from the open file instead
  of stat'ing it when challed with a FILE*
* use changed File::GetSize(FILE *f) instead of calling with file name in two
  places
* remove "seek_pos % file_size" hack for ZTP, so one can seek to the end of
  file again. Please check Zelda: Twilight Princess for regressions
* return error codes when reading or writing from/to a file

A lot of those changes are from j4ck.fr0st, so kudos to him.

I did not change the file open mode for ISFS_OPEN_WRITE to "wb". While that
would probably be more correct, it says in the comment that it might affect
Mario Kart Wii. I would prefer somebody with that game try that change
locally first.

Please check your games for regressions (or even improvement). Some games that
may be affected are Zelda - Twilight Princess and Metroid Prime 3.

Fixes issue 1749



git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6634 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
blubberdiblub
2010-12-21 18:03:44 +00:00
parent 6cb78515c6
commit 38e80fe094
2 changed files with 24 additions and 25 deletions
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14
Source/Core/Common/Src/FileUtil.cpp
View File

@ -362,7 +362,19 @@ u64 GetSize(const int fd)
// Overloaded GetSize, accepts FILE*
u64 GetSize(FILE *f)
{
return GetSize(fileno(f));
off_t pos = ftello(f);
if (fseeko(f, 0, SEEK_END) != 0) {
ERROR_LOG(COMMON, "GetSize: seek failed %p: %s",
f, GetLastErrorMsg());
return 0;
}
off_t size = ftello(f);
if ((size != pos) && (fseeko(f, pos, SEEK_SET) != 0)) {
ERROR_LOG(COMMON, "GetSize: seek failed %p: %s",
f, GetLastErrorMsg());
return 0;
}
return size;
}
// creates an empty file filename, returns true on success