/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
|
This file is part of the GNU C Library.
|
|
The GNU C Library 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 2.1 of the License, or (at your option) any later version.
|
|
The GNU C Library 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 the GNU C Library; if not, see
|
<https://www.gnu.org/licenses/>. */
|
|
#ifndef __struct_FILE_defined
|
#define __struct_FILE_defined 1
|
|
/* Caution: The contents of this file are not part of the official
|
stdio.h API. However, much of it is part of the official *binary*
|
interface, and therefore cannot be changed. */
|
|
#if defined _IO_USE_OLD_IO_FILE && !defined _LIBC
|
# error "_IO_USE_OLD_IO_FILE should only be defined when building libc itself"
|
#endif
|
|
#if defined _IO_lock_t_defined && !defined _LIBC
|
# error "_IO_lock_t_defined should only be defined when building libc itself"
|
#endif
|
|
#include <bits/types.h>
|
|
struct _IO_FILE;
|
struct _IO_marker;
|
struct _IO_codecvt;
|
struct _IO_wide_data;
|
|
/* During the build of glibc itself, _IO_lock_t will already have been
|
defined by internal headers. */
|
#ifndef _IO_lock_t_defined
|
typedef void _IO_lock_t;
|
#endif
|
|
/* The tag name of this struct is _IO_FILE to preserve historic
|
C++ mangled names for functions taking FILE* arguments.
|
That name should not be used in new code. */
|
struct _IO_FILE
|
{
|
int _flags; /* High-order word is _IO_MAGIC; rest is flags. */
|
|
/* The following pointers correspond to the C++ streambuf protocol. */
|
char *_IO_read_ptr; /* Current read pointer */
|
char *_IO_read_end; /* End of get area. */
|
char *_IO_read_base; /* Start of putback+get area. */
|
char *_IO_write_base; /* Start of put area. */
|
char *_IO_write_ptr; /* Current put pointer. */
|
char *_IO_write_end; /* End of put area. */
|
char *_IO_buf_base; /* Start of reserve area. */
|
char *_IO_buf_end; /* End of reserve area. */
|
|
/* The following fields are used to support backing up and undo. */
|
char *_IO_save_base; /* Pointer to start of non-current get area. */
|
char *_IO_backup_base; /* Pointer to first valid character of backup area */
|
char *_IO_save_end; /* Pointer to end of non-current get area. */
|
|
struct _IO_marker *_markers;
|
|
struct _IO_FILE *_chain;
|
|
int _fileno;
|
int _flags2;
|
__off_t _old_offset; /* This used to be _offset but it's too small. */
|
|
/* 1+column number of pbase(); 0 is unknown. */
|
unsigned short _cur_column;
|
signed char _vtable_offset;
|
char _shortbuf[1];
|
|
_IO_lock_t *_lock;
|
#ifdef _IO_USE_OLD_IO_FILE
|
};
|
|
struct _IO_FILE_complete
|
{
|
struct _IO_FILE _file;
|
#endif
|
__off64_t _offset;
|
/* Wide character stream stuff. */
|
struct _IO_codecvt *_codecvt;
|
struct _IO_wide_data *_wide_data;
|
struct _IO_FILE *_freeres_list;
|
void *_freeres_buf;
|
size_t __pad5;
|
int _mode;
|
/* Make sure we don't get into trouble again. */
|
char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];
|
};
|
|
/* These macros are used by bits/stdio.h and internal headers. */
|
#define __getc_unlocked_body(_fp) \
|
(__glibc_unlikely ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end) \
|
? __uflow (_fp) : *(unsigned char *) (_fp)->_IO_read_ptr++)
|
|
#define __putc_unlocked_body(_ch, _fp) \
|
(__glibc_unlikely ((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \
|
? __overflow (_fp, (unsigned char) (_ch)) \
|
: (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch)))
|
|
#define _IO_EOF_SEEN 0x0010
|
#define __feof_unlocked_body(_fp) (((_fp)->_flags & _IO_EOF_SEEN) != 0)
|
|
#define _IO_ERR_SEEN 0x0020
|
#define __ferror_unlocked_body(_fp) (((_fp)->_flags & _IO_ERR_SEEN) != 0)
|
|
#define _IO_USER_LOCK 0x8000
|
/* Many more flag bits are defined internally. */
|
|
#endif
|
