mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-16 03:19:54 +08:00
9fc9e1c916
* libc/include/sys/reent.h: Add _GLOBAL_REENT macro. * libc/stdio: Globally remove/replace all references to fp->_data. Replace with _REENT or _GLOBAL_REENT where appropriate. * libc/stdio/asprintf.c: Ditto. * libc/stdio/fclose.c: Ditto. * libc/stdio/fvwrite.c: Ditto. * libc/stdio/makebuf.c: Ditto. * libc/stdio/refill.c: Ditto. * libc/stdio/local.h: Ditto. * libc/stdio/setvbuf.c: Ditto. * libc/stdio/sscanf.c: Ditto. * libc/stdio/stdio.c: Ditto. * libc/stdio/ungetc.c: Ditto. * libc/stdio/vfscanf.c: Ditto. * libc/stdio/vsscanf.c: Ditto. * libc/stdio/fopen.c: Ditto. Also use _fseek_r in _fopen_r. * libc/stdio/vasprintf.c: Ditto. Also call _vfprintf_r directly. * libc/stdio/vsnprintf.c: Ditto. * libc/stdio/vsprintf.c: Ditto. * libc/stdio/fcloseall.c(fcloseall): Use _GLOBAL_REENT macro instead of _REENT to walk file list. * libc/stdio/fflush.c: Ditto. * libc/stdio/fgetpos.c: Add reentrant version and have regular version call reentrant version with _REENT argument. * libc/stdio/fsetpos.c: Ditto. * libc/stdio/fseek.c: Ditto. * libc/stdio/fseeko.c: Ditto. * libc/stdio/ftell.c: Ditto. * libc/stdio/ftello.c: Ditto. * libc/stdio/freopen.c: Ditto. * libc/stdio/findfp.c: Use _GLOBAL_REENT pointer when adding new files to chain. Also use _GLOBAL_REENT pointer for cleaning up. * libc/stdio/fiprintf.c: Reformatted to minimize duplicate code. * libc/stdio/siprintf.c: Ditto. * libc/stdio/iprintf.c: Ditto. * libc/stdio/fprintf.c: Ditto. * libc/stdio/printf.c: Ditto. * libc/stdio/snprintf.c: Call _vfprintf_r directly. * libc/stdio/sprintf.c: Ditto. * libc/stdio/vprintf.c: Ditto. Also add _REENT_ONLY check. * libc/stdio/rewind.c: Call _fseek_r directly. * libc/stdio/tmpfile.c: Call _fopen_r and _remove_r directly. * libc/stdio/vfprintf.c (_VFPRINTF_R): Change _r routines to use data pointer. (get_arg): Add extra struct _reent pointer argument. * libc/stdio64/fgetpos64.c: Add _r versions, remove any reference to fp->_data. * libc/stdio64/fopen64.c: Ditto. * libc/stdio64/freopen64.c: Ditto. * libc/stdio64/fsetpos64.c: Ditto. * libc/stdio64/ftello64.c: Ditto. * libc/stdio64/local64.h: Ditto. * libc/stdio64/stdio64.c: Ditto. * libc/stdio64/fseeko64.c: Ditto plus use _fstat_r instead of _fstat64_r for the meantime.
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
/*
|
|
FUNCTION
|
|
<<fsetpos>>---restore position of a stream or file
|
|
|
|
INDEX
|
|
fsetpos
|
|
INDEX
|
|
_fsetpos_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdio.h>
|
|
int fsetpos(FILE *<[fp]>, const fpos_t *<[pos]>);
|
|
int _fsetpos_r(struct _reent *<[ptr]>, FILE *<[fp]>, l
|
|
const fpos_t *<[pos]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdio.h>
|
|
int fsetpos(<[fp]>, <[pos]>)
|
|
FILE *<[fp]>;
|
|
fpos_t *<[pos]>;
|
|
|
|
int _fsetpos_r(<[ptr]>, <[fp]>, <[pos]>)
|
|
struct _reent *<[ptr]>;
|
|
FILE *<[fp]>;
|
|
fpos_t *<[pos]>;
|
|
|
|
DESCRIPTION
|
|
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
|
|
depend on this position, and many change it as a side effect.
|
|
|
|
You can use <<fsetpos>> to return the file identified by <[fp]> to a previous
|
|
position <<*<[pos]>>> (after first recording it with <<fgetpos>>).
|
|
|
|
See <<fseek>> for a similar facility.
|
|
|
|
RETURNS
|
|
<<fgetpos>> returns <<0>> when successful. If <<fgetpos>> fails, the
|
|
result is <<1>>. The reason for failure is indicated in <<errno>>:
|
|
either <<ESPIPE>> (the stream identified by <[fp]> doesn't support
|
|
repositioning) or <<EINVAL>> (invalid file position).
|
|
|
|
PORTABILITY
|
|
ANSI C requires <<fsetpos>>, but does not specify the nature of
|
|
<<*<[pos]>>> beyond identifying it as written by <<fgetpos>>.
|
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
int
|
|
_DEFUN (_fsetpos_r, (ptr, iop, pos),
|
|
struct _reent * ptr _AND
|
|
FILE * iop _AND
|
|
_CONST _fpos_t * pos)
|
|
{
|
|
int x = _fseek_r (ptr, iop, *pos, SEEK_SET);
|
|
|
|
if (x != 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
int
|
|
_DEFUN (fsetpos, (iop, pos),
|
|
FILE * iop _AND
|
|
_CONST _fpos_t * pos)
|
|
{
|
|
return _fsetpos_r (_REENT, iop, pos);
|
|
}
|
|
|
|
#endif /* !_REENT_ONLY */
|