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sortix--sortix/libmaxsi/fseeko.cpp
Jonas 'Sortie' Termansen a478dda4d9 fflush(3) on fseeko(3).
This caused a corruption of the resulting file if the program fwrite some
data that is buffered, then fseeks, and then fflushes. The fwrite will then
happen at the wrong memory location. Flushing in fseeko(3) fixes the problem
but it may cause violate some standard or just be inefficient.
2012-09-08 18:45:52 +02:00

32 lines
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C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
This file is part of LibMaxsi.
LibMaxsi is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General Public License
along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
fseeko.cpp
Changes the current offset in a FILE.
*******************************************************************************/
#include <stdio.h>
extern "C" int fseeko(FILE* fp, off_t offset, int whence)
{
fp->numpushedback = 0;
fflush(fp);
return (fp->seek_func) ? fp->seek_func(fp->user, offset, whence) : 0;
}