Module: wine Branch: master Commit: 6329d0d47da7391baa545669f9028ff2ac4bc4a4 URL: http://source.winehq.org/git/wine.git/?a=commit;h=6329d0d47da7391baa545669f9...
Author: Andrew Nguyen anguyen@codeweavers.com Date: Wed Apr 20 01:17:48 2011 -0500
msvcrt: Avoid the use of SetFilePointerEx in _lseeki64.
---
dlls/msvcrt/file.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c index b8077d2..c1a7785 100644 --- a/dlls/msvcrt/file.c +++ b/dlls/msvcrt/file.c @@ -863,7 +863,7 @@ void msvcrt_free_io(void) __int64 CDECL MSVCRT__lseeki64(int fd, __int64 offset, int whence) { HANDLE hand = msvcrt_fdtoh(fd); - LARGE_INTEGER ofs, ret; + LARGE_INTEGER ofs;
TRACE(":fd (%d) handle (%p)\n",fd,hand); if (hand == INVALID_HANDLE_VALUE) @@ -881,13 +881,16 @@ __int64 CDECL MSVCRT__lseeki64(int fd, __int64 offset, int whence) (whence==SEEK_CUR)?"SEEK_CUR": (whence==SEEK_END)?"SEEK_END":"UNKNOWN");
+ /* The MoleBox protection scheme expects msvcrt to use SetFilePointer only, + * so a LARGE_INTEGER offset cannot be passed directly via SetFilePointerEx. */ ofs.QuadPart = offset; - if (SetFilePointerEx(hand, ofs, &ret, whence)) + if ((ofs.LowPart = SetFilePointer(hand, ofs.LowPart, &ofs.HighPart, whence)) != INVALID_SET_FILE_POINTER || + GetLastError() == ERROR_SUCCESS) { MSVCRT_fdesc[fd].wxflag &= ~(WX_ATEOF|WX_READEOF); /* FIXME: What if we seek _to_ EOF - is EOF set? */
- return ret.QuadPart; + return ofs.QuadPart; } TRACE(":error-last error (%d)\n",GetLastError()); msvcrt_set_errno(GetLastError());