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/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*
* Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
*/
#include "_stdio.h"
#if SEEK_SET != 0 || SEEK_CUR != 1 || SEEK_END != 2
# error Assumption violated -- values of SEEK_SET, SEEK_CUR, SEEK_END
#endif
#ifndef __DO_LARGEFILE
# define FSEEK fseek
# define OFFSET_TYPE long int
#endif
int FSEEK(register FILE *stream, OFFSET_TYPE offset, int whence)
{
#if defined(__UCLIBC_HAS_LFS__) && !defined(__DO_LARGEFILE)
return __fseeko64(stream, offset, whence);
#else
__offmax_t pos = offset;
int retval = -1;
__STDIO_AUTO_THREADLOCK_VAR;
if (((unsigned int) whence) > 2) {
__set_errno(EINVAL);
} else {
__STDIO_AUTO_THREADLOCK(stream);
__STDIO_STREAM_VALIDATE(stream);
if ((!__STDIO_STREAM_IS_WRITING(stream)
|| !__STDIO_COMMIT_WRITE_BUFFER(stream))
&& ((whence != SEEK_CUR)
|| (__stdio_adjust_position(stream, &pos) >= 0))
&& (__SEEK(stream, &pos, whence) >= 0)
) {
/* Clear reading/writing modes, EOF, and ungots. */
stream->__modeflags &=
~(__MASK_READING|__FLAG_WRITING|__FLAG_EOF);
/* Make sure all pointers are reset. */
__STDIO_STREAM_INIT_BUFREAD_BUFPOS(stream);
__STDIO_STREAM_DISABLE_GETC(stream);
__STDIO_STREAM_DISABLE_PUTC(stream);
/* We reinitialize the mbstate object. Doing so is
* implementation defined behavior. */
#ifdef __STDIO_MBSTATE
__INIT_MBSTATE(&(stream->__state));
#endif
#ifdef __UCLIBC_HAS_WCHAR__
stream->__ungot_width[0] = 0;
#endif
retval = 0;
}
__STDIO_STREAM_VALIDATE(stream);
__STDIO_AUTO_THREADUNLOCK(stream);
}
return retval;
#endif
}
#ifdef __DO_LARGEFILE
weak_alias(__fseeko64,fseeko64);
#else
weak_alias(fseek,fseeko);
#endif
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