39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013, 2014.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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stdio/fseeko_unlocked.cpp
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Changes the current offset in a FILE.
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*******************************************************************************/
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#include <errno.h>
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#include <stdio.h>
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extern "C" int fseeko_unlocked(FILE* fp, off_t offset, int whence)
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{
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if ( !fp->seek_func )
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return errno = EBADF, -1;
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if ( fflush_unlocked(fp) != 0 )
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return -1;
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if ( fp->seek_func(fp->user, offset, whence) < 0 )
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return -1;
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fp->flags &= ~_FILE_STATUS_EOF;
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return 0;
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}
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