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13 Security Lab
[API] SetEndOfFile(), Set "EOF" where Current FilePointer indicates 본문
Computer Science/Programming
[API] SetEndOfFile(), Set "EOF" where Current FilePointer indicates
Maj0r Tom 2014. 4. 15. 23:40http://msdn.microsoft.com/en-us/library/windows/desktop/aa365531(v=vs.85).aspx
Do refer MSDN, It's enough to understand.
"It works only when you got handle using CreateFile()"
typedef uint64_t fsize_t; int file_resize(const char* path, fsize_t newsize) { HANDLE hFile = CreateFile(path, GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, 0, NULL); if (hFile == INVALID_HANDLE_VALUE) return -1; LARGE_INTEGER liDistanceToMove; liDistanceToMove.QuadPart = (LONGLONG) newsize; BOOL success; success = SetFilePointerEx(hFile, liDistanceToMove, NULL, FILE_BEGIN); if (success) success = SetEndOfFile(hFile); CloseHandle(hFile); return (success) ? 0 : -1; }
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