/*
|
/*
|
* Copyright (c) 1990 The Regents of the University of California.
|
* Copyright (c) 1990 The Regents of the University of California.
|
* All rights reserved.
|
* All rights reserved.
|
*
|
*
|
* Redistribution and use in source and binary forms are permitted
|
* Redistribution and use in source and binary forms are permitted
|
* provided that the above copyright notice and this paragraph are
|
* provided that the above copyright notice and this paragraph are
|
* duplicated in all such forms and that any documentation,
|
* duplicated in all such forms and that any documentation,
|
* advertising materials, and other materials related to such
|
* advertising materials, and other materials related to such
|
* distribution and use acknowledge that the software was developed
|
* distribution and use acknowledge that the software was developed
|
* by the University of California, Berkeley. The name of the
|
* by the University of California, Berkeley. The name of the
|
* University may not be used to endorse or promote products derived
|
* University may not be used to endorse or promote products derived
|
* from this software without specific prior written permission.
|
* from this software without specific prior written permission.
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
*/
|
*/
|
|
|
/*
|
/*
|
FUNCTION
|
FUNCTION
|
<<fseek>>, <<fseeko>>---set file position
|
<<fseek>>, <<fseeko>>---set file position
|
|
|
INDEX
|
INDEX
|
fseek
|
fseek
|
INDEX
|
INDEX
|
fseeko
|
fseeko
|
INDEX
|
INDEX
|
_fseek_r
|
_fseek_r
|
INDEX
|
INDEX
|
_fseeko_r
|
_fseeko_r
|
|
|
ANSI_SYNOPSIS
|
ANSI_SYNOPSIS
|
#include <stdio.h>
|
#include <stdio.h>
|
int fseek(FILE *<[fp]>, long <[offset]>, int <[whence]>)
|
int fseek(FILE *<[fp]>, long <[offset]>, int <[whence]>)
|
int fseeko(FILE *<[fp]>, off_t <[offset]>, int <[whence]>)
|
int fseeko(FILE *<[fp]>, off_t <[offset]>, int <[whence]>)
|
int _fseek_r(struct _reent *<[ptr]>, FILE *<[fp]>,
|
int _fseek_r(struct _reent *<[ptr]>, FILE *<[fp]>,
|
long <[offset]>, int <[whence]>)
|
long <[offset]>, int <[whence]>)
|
int _fseeko_r(struct _reent *<[ptr]>, FILE *<[fp]>,
|
int _fseeko_r(struct _reent *<[ptr]>, FILE *<[fp]>,
|
off_t <[offset]>, int <[whence]>)
|
off_t <[offset]>, int <[whence]>)
|
|
|
TRAD_SYNOPSIS
|
TRAD_SYNOPSIS
|
#include <stdio.h>
|
#include <stdio.h>
|
int fseek(<[fp]>, <[offset]>, <[whence]>)
|
int fseek(<[fp]>, <[offset]>, <[whence]>)
|
FILE *<[fp]>;
|
FILE *<[fp]>;
|
long <[offset]>;
|
long <[offset]>;
|
int <[whence]>;
|
int <[whence]>;
|
|
|
int fseeko(<[fp]>, <[offset]>, <[whence]>)
|
int fseeko(<[fp]>, <[offset]>, <[whence]>)
|
FILE *<[fp]>;
|
FILE *<[fp]>;
|
off_t <[offset]>;
|
off_t <[offset]>;
|
int <[whence]>;
|
int <[whence]>;
|
|
|
int _fseek_r(<[ptr]>, <[fp]>, <[offset]>, <[whence]>)
|
int _fseek_r(<[ptr]>, <[fp]>, <[offset]>, <[whence]>)
|
struct _reent *<[ptr]>;
|
struct _reent *<[ptr]>;
|
FILE *<[fp]>;
|
FILE *<[fp]>;
|
long <[offset]>;
|
long <[offset]>;
|
int <[whence]>;
|
int <[whence]>;
|
|
|
int _fseeko_r(<[ptr]>, <[fp]>, <[offset]>, <[whence]>)
|
int _fseeko_r(<[ptr]>, <[fp]>, <[offset]>, <[whence]>)
|
struct _reent *<[ptr]>;
|
struct _reent *<[ptr]>;
|
FILE *<[fp]>;
|
FILE *<[fp]>;
|
off_t <[offset]>;
|
off_t <[offset]>;
|
int <[whence]>;
|
int <[whence]>;
|
|
|
DESCRIPTION
|
DESCRIPTION
|
Objects of type <<FILE>> can have a ``position'' that records how much
|
Objects of type <<FILE>> can have a ``position'' that records how much
|
of the file your program has already read. Many of the <<stdio>> functions
|
of the file your program has already read. Many of the <<stdio>> functions
|
depend on this position, and many change it as a side effect.
|
depend on this position, and many change it as a side effect.
|
|
|
You can use <<fseek>>/<<fseeko>> to set the position for the file identified by
|
You can use <<fseek>>/<<fseeko>> to set the position for the file identified by
|
<[fp]>. The value of <[offset]> determines the new position, in one
|
<[fp]>. The value of <[offset]> determines the new position, in one
|
of three ways selected by the value of <[whence]> (defined as macros
|
of three ways selected by the value of <[whence]> (defined as macros
|
in `<<stdio.h>>'):
|
in `<<stdio.h>>'):
|
|
|
<<SEEK_SET>>---<[offset]> is the absolute file position (an offset
|
<<SEEK_SET>>---<[offset]> is the absolute file position (an offset
|
from the beginning of the file) desired. <[offset]> must be positive.
|
from the beginning of the file) desired. <[offset]> must be positive.
|
|
|
<<SEEK_CUR>>---<[offset]> is relative to the current file position.
|
<<SEEK_CUR>>---<[offset]> is relative to the current file position.
|
<[offset]> can meaningfully be either positive or negative.
|
<[offset]> can meaningfully be either positive or negative.
|
|
|
<<SEEK_END>>---<[offset]> is relative to the current end of file.
|
<<SEEK_END>>---<[offset]> is relative to the current end of file.
|
<[offset]> can meaningfully be either positive (to increase the size
|
<[offset]> can meaningfully be either positive (to increase the size
|
of the file) or negative.
|
of the file) or negative.
|
|
|
See <<ftell>>/<<ftello>> to determine the current file position.
|
See <<ftell>>/<<ftello>> to determine the current file position.
|
|
|
RETURNS
|
RETURNS
|
<<fseek>>/<<fseeko>> return <<0>> when successful. On failure, the
|
<<fseek>>/<<fseeko>> return <<0>> when successful. On failure, the
|
result is <<EOF>>. The reason for failure is indicated in <<errno>>:
|
result is <<EOF>>. The reason for failure is indicated in <<errno>>:
|
either <<ESPIPE>> (the stream identified by <[fp]> doesn't support
|
either <<ESPIPE>> (the stream identified by <[fp]> doesn't support
|
repositioning) or <<EINVAL>> (invalid file position).
|
repositioning) or <<EINVAL>> (invalid file position).
|
|
|
PORTABILITY
|
PORTABILITY
|
ANSI C requires <<fseek>>.
|
ANSI C requires <<fseek>>.
|
|
|
<<fseeko>> is defined by the Single Unix specification.
|
<<fseeko>> is defined by the Single Unix specification.
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
|
*/
|
*/
|
|
|
#include <_ansi.h>
|
#include <_ansi.h>
|
#include <reent.h>
|
#include <reent.h>
|
#include <stdio.h>
|
#include <stdio.h>
|
#include <string.h>
|
#include <string.h>
|
#include <time.h>
|
#include <time.h>
|
#include <fcntl.h>
|
#include <fcntl.h>
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#include <errno.h>
|
#include <errno.h>
|
#include <sys/stat.h>
|
#include <sys/stat.h>
|
#include "local.h"
|
#include "local.h"
|
|
|
#define POS_ERR (-(_fpos_t)1)
|
#define POS_ERR (-(_fpos_t)1)
|
|
|
/*
|
/*
|
* Seek the given file to the given offset.
|
* Seek the given file to the given offset.
|
* `Whence' must be one of the three SEEK_* macros.
|
* `Whence' must be one of the three SEEK_* macros.
|
*/
|
*/
|
|
|
int
|
int
|
_DEFUN(_fseek_r, (ptr, fp, offset, whence),
|
_DEFUN(_fseek_r, (ptr, fp, offset, whence),
|
struct _reent *ptr _AND
|
struct _reent *ptr _AND
|
register FILE *fp _AND
|
register FILE *fp _AND
|
long offset _AND
|
long offset _AND
|
int whence)
|
int whence)
|
{
|
{
|
_fpos_t _EXFUN((*seekfn), (struct _reent *, _PTR, _fpos_t, int));
|
_fpos_t _EXFUN((*seekfn), (struct _reent *, _PTR, _fpos_t, int));
|
_fpos_t target;
|
_fpos_t target;
|
_fpos_t curoff = 0;
|
_fpos_t curoff = 0;
|
size_t n;
|
size_t n;
|
#ifdef __USE_INTERNAL_STAT64
|
#ifdef __USE_INTERNAL_STAT64
|
struct stat64 st;
|
struct stat64 st;
|
#else
|
#else
|
struct stat st;
|
struct stat st;
|
#endif
|
#endif
|
int havepos;
|
int havepos;
|
|
|
/* Make sure stdio is set up. */
|
/* Make sure stdio is set up. */
|
|
|
CHECK_INIT (ptr, fp);
|
CHECK_INIT (ptr, fp);
|
|
|
_flockfile (fp);
|
_flockfile (fp);
|
|
|
/* If we've been doing some writing, and we're in append mode
|
/* If we've been doing some writing, and we're in append mode
|
then we don't really know where the filepos is. */
|
then we don't really know where the filepos is. */
|
|
|
if (fp->_flags & __SAPP && fp->_flags & __SWR)
|
if (fp->_flags & __SAPP && fp->_flags & __SWR)
|
{
|
{
|
/* So flush the buffer and seek to the end. */
|
/* So flush the buffer and seek to the end. */
|
_fflush_r (ptr, fp);
|
_fflush_r (ptr, fp);
|
}
|
}
|
|
|
/* Have to be able to seek. */
|
/* Have to be able to seek. */
|
|
|
if ((seekfn = fp->_seek) == NULL)
|
if ((seekfn = fp->_seek) == NULL)
|
{
|
{
|
ptr->_errno = ESPIPE; /* ??? */
|
ptr->_errno = ESPIPE; /* ??? */
|
_funlockfile (fp);
|
_funlockfile (fp);
|
return EOF;
|
return EOF;
|
}
|
}
|
|
|
/*
|
/*
|
* Change any SEEK_CUR to SEEK_SET, and check `whence' argument.
|
* Change any SEEK_CUR to SEEK_SET, and check `whence' argument.
|
* After this, whence is either SEEK_SET or SEEK_END.
|
* After this, whence is either SEEK_SET or SEEK_END.
|
*/
|
*/
|
|
|
switch (whence)
|
switch (whence)
|
{
|
{
|
case SEEK_CUR:
|
case SEEK_CUR:
|
/*
|
/*
|
* In order to seek relative to the current stream offset,
|
* In order to seek relative to the current stream offset,
|
* we have to first find the current stream offset a la
|
* we have to first find the current stream offset a la
|
* ftell (see ftell for details).
|
* ftell (see ftell for details).
|
*/
|
*/
|
_fflush_r (ptr, fp); /* may adjust seek offset on append stream */
|
_fflush_r (ptr, fp); /* may adjust seek offset on append stream */
|
if (fp->_flags & __SOFF)
|
if (fp->_flags & __SOFF)
|
curoff = fp->_offset;
|
curoff = fp->_offset;
|
else
|
else
|
{
|
{
|
curoff = seekfn (ptr, fp->_cookie, (_fpos_t) 0, SEEK_CUR);
|
curoff = seekfn (ptr, fp->_cookie, (_fpos_t) 0, SEEK_CUR);
|
if (curoff == -1L)
|
if (curoff == -1L)
|
{
|
{
|
_funlockfile (fp);
|
_funlockfile (fp);
|
return EOF;
|
return EOF;
|
}
|
}
|
}
|
}
|
if (fp->_flags & __SRD)
|
if (fp->_flags & __SRD)
|
{
|
{
|
curoff -= fp->_r;
|
curoff -= fp->_r;
|
if (HASUB (fp))
|
if (HASUB (fp))
|
curoff -= fp->_ur;
|
curoff -= fp->_ur;
|
}
|
}
|
else if (fp->_flags & __SWR && fp->_p != NULL)
|
else if (fp->_flags & __SWR && fp->_p != NULL)
|
curoff += fp->_p - fp->_bf._base;
|
curoff += fp->_p - fp->_bf._base;
|
|
|
offset += curoff;
|
offset += curoff;
|
whence = SEEK_SET;
|
whence = SEEK_SET;
|
havepos = 1;
|
havepos = 1;
|
break;
|
break;
|
|
|
case SEEK_SET:
|
case SEEK_SET:
|
case SEEK_END:
|
case SEEK_END:
|
havepos = 0;
|
havepos = 0;
|
break;
|
break;
|
|
|
default:
|
default:
|
ptr->_errno = EINVAL;
|
ptr->_errno = EINVAL;
|
_funlockfile (fp);
|
_funlockfile (fp);
|
return (EOF);
|
return (EOF);
|
}
|
}
|
|
|
/*
|
/*
|
* Can only optimise if:
|
* Can only optimise if:
|
* reading (and not reading-and-writing);
|
* reading (and not reading-and-writing);
|
* not unbuffered; and
|
* not unbuffered; and
|
* this is a `regular' Unix file (and hence seekfn==__sseek).
|
* this is a `regular' Unix file (and hence seekfn==__sseek).
|
* We must check __NBF first, because it is possible to have __NBF
|
* We must check __NBF first, because it is possible to have __NBF
|
* and __SOPT both set.
|
* and __SOPT both set.
|
*/
|
*/
|
|
|
if (fp->_bf._base == NULL)
|
if (fp->_bf._base == NULL)
|
__smakebuf_r (ptr, fp);
|
__smakebuf_r (ptr, fp);
|
if (fp->_flags & (__SWR | __SRW | __SNBF | __SNPT))
|
if (fp->_flags & (__SWR | __SRW | __SNBF | __SNPT))
|
goto dumb;
|
goto dumb;
|
if ((fp->_flags & __SOPT) == 0)
|
if ((fp->_flags & __SOPT) == 0)
|
{
|
{
|
if (seekfn != __sseek
|
if (seekfn != __sseek
|
|| fp->_file < 0
|
|| fp->_file < 0
|
#ifdef __USE_INTERNAL_STAT64
|
#ifdef __USE_INTERNAL_STAT64
|
|| _fstat64_r (ptr, fp->_file, &st)
|
|| _fstat64_r (ptr, fp->_file, &st)
|
#else
|
#else
|
|| _fstat_r (ptr, fp->_file, &st)
|
|| _fstat_r (ptr, fp->_file, &st)
|
#endif
|
#endif
|
|| (st.st_mode & S_IFMT) != S_IFREG)
|
|| (st.st_mode & S_IFMT) != S_IFREG)
|
{
|
{
|
fp->_flags |= __SNPT;
|
fp->_flags |= __SNPT;
|
goto dumb;
|
goto dumb;
|
}
|
}
|
#ifdef HAVE_BLKSIZE
|
#ifdef HAVE_BLKSIZE
|
fp->_blksize = st.st_blksize;
|
fp->_blksize = st.st_blksize;
|
#else
|
#else
|
fp->_blksize = 1024;
|
fp->_blksize = 1024;
|
#endif
|
#endif
|
fp->_flags |= __SOPT;
|
fp->_flags |= __SOPT;
|
}
|
}
|
|
|
/*
|
/*
|
* We are reading; we can try to optimise.
|
* We are reading; we can try to optimise.
|
* Figure out where we are going and where we are now.
|
* Figure out where we are going and where we are now.
|
*/
|
*/
|
|
|
if (whence == SEEK_SET)
|
if (whence == SEEK_SET)
|
target = offset;
|
target = offset;
|
else
|
else
|
{
|
{
|
#ifdef __USE_INTERNAL_STAT64
|
#ifdef __USE_INTERNAL_STAT64
|
if (_fstat64_r (ptr, fp->_file, &st))
|
if (_fstat64_r (ptr, fp->_file, &st))
|
#else
|
#else
|
if (_fstat_r (ptr, fp->_file, &st))
|
if (_fstat_r (ptr, fp->_file, &st))
|
#endif
|
#endif
|
goto dumb;
|
goto dumb;
|
target = st.st_size + offset;
|
target = st.st_size + offset;
|
}
|
}
|
if ((long)target != target)
|
if ((long)target != target)
|
{
|
{
|
ptr->_errno = EOVERFLOW;
|
ptr->_errno = EOVERFLOW;
|
return EOF;
|
return EOF;
|
}
|
}
|
|
|
if (!havepos)
|
if (!havepos)
|
{
|
{
|
if (fp->_flags & __SOFF)
|
if (fp->_flags & __SOFF)
|
curoff = fp->_offset;
|
curoff = fp->_offset;
|
else
|
else
|
{
|
{
|
curoff = seekfn (ptr, fp->_cookie, 0L, SEEK_CUR);
|
curoff = seekfn (ptr, fp->_cookie, 0L, SEEK_CUR);
|
if (curoff == POS_ERR)
|
if (curoff == POS_ERR)
|
goto dumb;
|
goto dumb;
|
}
|
}
|
curoff -= fp->_r;
|
curoff -= fp->_r;
|
if (HASUB (fp))
|
if (HASUB (fp))
|
curoff -= fp->_ur;
|
curoff -= fp->_ur;
|
}
|
}
|
|
|
/*
|
/*
|
* Compute the number of bytes in the input buffer (pretending
|
* Compute the number of bytes in the input buffer (pretending
|
* that any ungetc() input has been discarded). Adjust current
|
* that any ungetc() input has been discarded). Adjust current
|
* offset backwards by this count so that it represents the
|
* offset backwards by this count so that it represents the
|
* file offset for the first byte in the current input buffer.
|
* file offset for the first byte in the current input buffer.
|
*/
|
*/
|
|
|
if (HASUB (fp))
|
if (HASUB (fp))
|
{
|
{
|
curoff += fp->_r; /* kill off ungetc */
|
curoff += fp->_r; /* kill off ungetc */
|
n = fp->_up - fp->_bf._base;
|
n = fp->_up - fp->_bf._base;
|
curoff -= n;
|
curoff -= n;
|
n += fp->_ur;
|
n += fp->_ur;
|
}
|
}
|
else
|
else
|
{
|
{
|
n = fp->_p - fp->_bf._base;
|
n = fp->_p - fp->_bf._base;
|
curoff -= n;
|
curoff -= n;
|
n += fp->_r;
|
n += fp->_r;
|
}
|
}
|
|
|
/*
|
/*
|
* If the target offset is within the current buffer,
|
* If the target offset is within the current buffer,
|
* simply adjust the pointers, clear EOF, undo ungetc(),
|
* simply adjust the pointers, clear EOF, undo ungetc(),
|
* and return.
|
* and return.
|
*/
|
*/
|
|
|
if (target >= curoff && target < curoff + n)
|
if (target >= curoff && target < curoff + n)
|
{
|
{
|
register int o = target - curoff;
|
register int o = target - curoff;
|
|
|
fp->_p = fp->_bf._base + o;
|
fp->_p = fp->_bf._base + o;
|
fp->_r = n - o;
|
fp->_r = n - o;
|
if (HASUB (fp))
|
if (HASUB (fp))
|
FREEUB (ptr, fp);
|
FREEUB (ptr, fp);
|
fp->_flags &= ~__SEOF;
|
fp->_flags &= ~__SEOF;
|
memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
|
memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
|
_funlockfile (fp);
|
_funlockfile (fp);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* The place we want to get to is not within the current buffer,
|
* The place we want to get to is not within the current buffer,
|
* but we can still be kind to the kernel copyout mechanism.
|
* but we can still be kind to the kernel copyout mechanism.
|
* By aligning the file offset to a block boundary, we can let
|
* By aligning the file offset to a block boundary, we can let
|
* the kernel use the VM hardware to map pages instead of
|
* the kernel use the VM hardware to map pages instead of
|
* copying bytes laboriously. Using a block boundary also
|
* copying bytes laboriously. Using a block boundary also
|
* ensures that we only read one block, rather than two.
|
* ensures that we only read one block, rather than two.
|
*/
|
*/
|
|
|
curoff = target & ~(fp->_blksize - 1);
|
curoff = target & ~(fp->_blksize - 1);
|
if (seekfn (ptr, fp->_cookie, curoff, SEEK_SET) == POS_ERR)
|
if (seekfn (ptr, fp->_cookie, curoff, SEEK_SET) == POS_ERR)
|
goto dumb;
|
goto dumb;
|
fp->_r = 0;
|
fp->_r = 0;
|
fp->_p = fp->_bf._base;
|
fp->_p = fp->_bf._base;
|
if (HASUB (fp))
|
if (HASUB (fp))
|
FREEUB (ptr, fp);
|
FREEUB (ptr, fp);
|
fp->_flags &= ~__SEOF;
|
fp->_flags &= ~__SEOF;
|
n = target - curoff;
|
n = target - curoff;
|
if (n)
|
if (n)
|
{
|
{
|
if (__srefill_r (ptr, fp) || fp->_r < n)
|
if (__srefill_r (ptr, fp) || fp->_r < n)
|
goto dumb;
|
goto dumb;
|
fp->_p += n;
|
fp->_p += n;
|
fp->_r -= n;
|
fp->_r -= n;
|
}
|
}
|
memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
|
memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
|
_funlockfile (fp);
|
_funlockfile (fp);
|
return 0;
|
return 0;
|
|
|
/*
|
/*
|
* We get here if we cannot optimise the seek ... just
|
* We get here if we cannot optimise the seek ... just
|
* do it. Allow the seek function to change fp->_bf._base.
|
* do it. Allow the seek function to change fp->_bf._base.
|
*/
|
*/
|
|
|
dumb:
|
dumb:
|
if (_fflush_r (ptr, fp)
|
if (_fflush_r (ptr, fp)
|
|| seekfn (ptr, fp->_cookie, offset, whence) == POS_ERR)
|
|| seekfn (ptr, fp->_cookie, offset, whence) == POS_ERR)
|
{
|
{
|
_funlockfile (fp);
|
_funlockfile (fp);
|
return EOF;
|
return EOF;
|
}
|
}
|
/* success: clear EOF indicator and discard ungetc() data */
|
/* success: clear EOF indicator and discard ungetc() data */
|
if (HASUB (fp))
|
if (HASUB (fp))
|
FREEUB (ptr, fp);
|
FREEUB (ptr, fp);
|
fp->_p = fp->_bf._base;
|
fp->_p = fp->_bf._base;
|
fp->_r = 0;
|
fp->_r = 0;
|
/* fp->_w = 0; *//* unnecessary (I think...) */
|
/* fp->_w = 0; *//* unnecessary (I think...) */
|
fp->_flags &= ~__SEOF;
|
fp->_flags &= ~__SEOF;
|
/* Reset no-optimization flag after successful seek. The
|
/* Reset no-optimization flag after successful seek. The
|
no-optimization flag may be set in the case of a read
|
no-optimization flag may be set in the case of a read
|
stream that is flushed which by POSIX/SUSv3 standards,
|
stream that is flushed which by POSIX/SUSv3 standards,
|
means that a corresponding seek must not optimize. The
|
means that a corresponding seek must not optimize. The
|
optimization is then allowed if no subsequent flush
|
optimization is then allowed if no subsequent flush
|
is performed. */
|
is performed. */
|
fp->_flags &= ~__SNPT;
|
fp->_flags &= ~__SNPT;
|
memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
|
memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
|
_funlockfile (fp);
|
_funlockfile (fp);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
#ifndef _REENT_ONLY
|
#ifndef _REENT_ONLY
|
|
|
int
|
int
|
_DEFUN(fseek, (fp, offset, whence),
|
_DEFUN(fseek, (fp, offset, whence),
|
register FILE *fp _AND
|
register FILE *fp _AND
|
long offset _AND
|
long offset _AND
|
int whence)
|
int whence)
|
{
|
{
|
return _fseek_r (_REENT, fp, offset, whence);
|
return _fseek_r (_REENT, fp, offset, whence);
|
}
|
}
|
|
|
#endif /* !_REENT_ONLY */
|
#endif /* !_REENT_ONLY */
|
|
|
