[thirdparty/glibc.git] / libio / libio.h

/*
Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation

This file is part of the GNU IO Library.  This library is free
software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option)
any later version.

This 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this library; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

As a special exception, if you link this library with files
compiled with a GNU compiler to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */

/* This is part of the iostream library.  Written by Per Bothner. */

#ifndef _IO_STDIO_H
#define _IO_STDIO_H
#include <features.h>

#include <_G_config.h>
#define _IO_pos_t _G_fpos_t /* obsolete */
#define _IO_fpos_t _G_fpos_t
#define _IO_size_t _G_size_t
#define _IO_ssize_t _G_ssize_t
#define _IO_off_t _G_off_t
#define _IO_pid_t _G_pid_t
#define _IO_uid_t _G_uid_t
#define _IO_HAVE_SYS_WAIT _G_HAVE_SYS_WAIT
#define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE
#define _IO_BUFSIZ _G_BUFSIZ
#define _IO_va_list _G_va_list

#ifdef _G_NEED_STDARG_H
/* This define avoids name pollution if we're using GNU stdarg.h */
#define __need___va_list
#include <stdarg.h>
#ifdef __GNUC_VA_LIST
#undef _IO_va_list
#define _IO_va_list __gnuc_va_list
#endif /* __GNUC_VA_LIST */
#endif

#ifndef __P
#if _G_HAVE_SYS_CDEFS
#include <sys/cdefs.h>
#else
#ifdef __STDC__
#define __P(protos) protos
#else
#define __P(protos) ()
#endif
#endif
#endif /*!__P*/

/* For backward compatibility */
#ifndef _PARAMS
#define _PARAMS(protos) __P(protos)
#endif /*!_PARAMS*/

#ifndef __STDC__
#define const
#endif
#define _IO_UNIFIED_JUMPTABLES 1

#if 0
#ifdef _IO_NEED_STDARG_H
#include <stdarg.h>
#endif
#endif

#ifndef EOF
#define EOF (-1)
#endif
#ifndef NULL
#if defined __GNUG__ && \
    (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
#define NULL (__null)
#else
#if !defined(__cplusplus)
#define NULL ((void*)0)
#else
#define NULL (0)
#endif
#endif
#endif

#define _IOS_INPUT	1
#define _IOS_OUTPUT	2
#define _IOS_ATEND	4
#define _IOS_APPEND	8
#define _IOS_TRUNC	16
#define _IOS_NOCREATE	32
#define _IOS_NOREPLACE	64
#define _IOS_BIN	128

/* Magic numbers and bits for the _flags field.
   The magic numbers use the high-order bits of _flags;
   the remaining bits are available for variable flags.
   Note: The magic numbers must all be negative if stdio
   emulation is desired. */

#define _IO_MAGIC 0xFBAD0000 /* Magic number */
#define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */
#define _IO_MAGIC_MASK 0xFFFF0000
#define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */
#define _IO_UNBUFFERED 2
#define _IO_NO_READS 4 /* Reading not allowed */
#define _IO_NO_WRITES 8 /* Writing not allowd */
#define _IO_EOF_SEEN 0x10
#define _IO_ERR_SEEN 0x20
#define _IO_DELETE_DONT_CLOSE 0x40 /* Don't call close(_fileno) on cleanup. */
#define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/
#define _IO_IN_BACKUP 0x100
#define _IO_LINE_BUF 0x200
#define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */
#define _IO_CURRENTLY_PUTTING 0x800
#define _IO_IS_APPENDING 0x1000
#define _IO_IS_FILEBUF 0x2000

/* These are "formatting flags" matching the iostream fmtflags enum values. */
#define _IO_SKIPWS 01
#define _IO_LEFT 02
#define _IO_RIGHT 04
#define _IO_INTERNAL 010
#define _IO_DEC 020
#define _IO_OCT 040
#define _IO_HEX 0100
#define _IO_SHOWBASE 0200
#define _IO_SHOWPOINT 0400
#define _IO_UPPERCASE 01000
#define _IO_SHOWPOS 02000
#define _IO_SCIENTIFIC 04000
#define _IO_FIXED 010000
#define _IO_UNITBUF 020000
#define _IO_STDIO 040000
#define _IO_DONT_CLOSE 0100000


struct _IO_jump_t;  struct _IO_FILE;

/* Define the user-visible type, with user-friendly member names.  */
typedef struct
{
  _IO_ssize_t (*read) __P ((struct _IO_FILE *, void *, _IO_ssize_t));
  _IO_ssize_t (*write) __P ((struct _IO_FILE *, const void *, _IO_ssize_t));
  _IO_fpos_t (*seek) __P ((struct _IO_FILE *, _IO_off_t, int));
  int (*close) __P ((struct _IO_FILE *));
} _IO_cookie_io_functions_t;

/* Handle lock.  */
#ifdef _IO_MTSAFE_IO
#include <stdio-lock.h>
#else
typedef void _IO_lock_t;
#endif


/* A streammarker remembers a position in a buffer. */

struct _IO_marker {
  struct _IO_marker *_next;
  struct _IO_FILE *_sbuf;
  /* If _pos >= 0
 it points to _buf->Gbase()+_pos. FIXME comment */
  /* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */
  int _pos;
#if 0
    void set_streampos(streampos sp) { _spos = sp; }
    void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); }
  public:
    streammarker(streambuf *sb);
    ~streammarker();
    int saving() { return  _spos == -2; }
    int delta(streammarker&);
    int delta();
#endif
};

struct _IO_FILE {
  int _flags;		/* High-order word is _IO_MAGIC; rest is flags. */
#define _IO_file_flags _flags

  /* The following pointers correspond to the C++ streambuf protocol. */
  /* Note:  Tk uses the _IO_read_ptr and _IO_read_end fields directly. */
  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 _blksize;
  _IO_off_t _offset;

#define __HAVE_COLUMN /* temporary */
  /* 1+column number of pbase(); 0 is unknown. */
  unsigned short _cur_column;
  char _unused;
  char _shortbuf[1];

  /*  char* _save_gptr;  char* _save_egptr; */

  _IO_lock_t *_lock;
};

#ifndef __cplusplus
typedef struct _IO_FILE _IO_FILE;
#endif

struct _IO_FILE_plus;
extern struct _IO_FILE_plus _IO_stdin_, _IO_stdout_, _IO_stderr_;
#define _IO_stdin ((_IO_FILE*)(&_IO_stdin_))
#define _IO_stdout ((_IO_FILE*)(&_IO_stdout_))
#define _IO_stderr ((_IO_FILE*)(&_IO_stderr_))


/* Special file type for fopencookie function.  */
struct _IO_cookie_file {
  struct _IO_FILE file;
  const void *vtable;
  void *cookie;
  _IO_cookie_io_functions_t io_functions;
};


#ifdef __cplusplus
extern "C" {
#endif

extern int __underflow __P((_IO_FILE*));
extern int __uflow __P((_IO_FILE*));
extern int __overflow __P((_IO_FILE*, int));

#define _IO_getc_unlocked(_fp) \
       ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end ? __uflow(_fp) \
	: *(unsigned char*)(_fp)->_IO_read_ptr++)
#define _IO_peekc_unlocked(_fp) \
       ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \
	  && __underflow(_fp) == EOF ? EOF \
	: *(unsigned char*)(_fp)->_IO_read_ptr)

#define _IO_putc_unlocked(_ch, _fp) \
   (((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \
    ? __overflow(_fp, (unsigned char)(_ch)) \
    : (unsigned char)(*(_fp)->_IO_write_ptr++ = (_ch)))

#define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0)
#define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0)

extern int _IO_getc __P ((_IO_FILE *__fp));
extern int _IO_putc __P ((int __c, _IO_FILE *__fp));
extern int _IO_feof __P ((_IO_FILE *__fp));
extern int _IO_ferror __P ((_IO_FILE *__fp));

extern int _IO_peekc_locked __P ((_IO_FILE *__fp));

/* This one is for Emacs. */
#define _IO_PENDING_OUTPUT_COUNT(_fp)	\
	((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)

extern void _IO_flockfile __P ((_IO_FILE *));
extern void _IO_funlockfile __P ((_IO_FILE *));
extern int _IO_ftrylockfile __P ((_IO_FILE *));

#ifndef _IO_MTSAFE_IO
# define _IO_flockfile(_fp) /**/
# define _IO_funlockfile(_fp) /**/
# define _IO_ftrylockfile(_fp) /**/
# define _IO_cleanup_region_start(_fct, _fp) /**/
# define _IO_cleanup_region_end(_Doit) /**/
#endif /* !_IO_MTSAFE_IO */

/* XXX Should we allow a symbol to be defined which selects the efficient
  implementation when the user is really sure no threaded functions ever
  will be used?  */
#if 1
# define _IO_getc(_fp) _IO_getc (_fp)
# define _IO_peekc(_fp) _IO_peekc_locked (_fp)
# define _IO_putc(_ch, _fp) _IO_putc (_ch, _fp)
# define _IO_feof(_fp) _IO_feof (_fp)
# define _IO_ferror(_fp) _IO_ferror (_fp)
#else
# define _IO_getc(_fp) _IO_getc_unlocked (_fp)
# define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
# define _IO_putc(_ch, _fp) _IO_putc_unlocked (_ch, _fp)
# define _IO_feof(_fp) _IO_feof_unlocked (_fp)
# define _IO_ferror(_fp) _IO_ferror_unlocked (_fp)
#endif

extern int _IO_vfscanf __P((_IO_FILE*, const char*, _IO_va_list, int*));
extern int _IO_vfprintf __P((_IO_FILE*, const char*, _IO_va_list));
extern _IO_ssize_t _IO_padn __P((_IO_FILE *, int, _IO_ssize_t));
extern _IO_size_t _IO_sgetn __P((_IO_FILE *, void*, _IO_size_t));

extern _IO_fpos_t _IO_seekoff __P((_IO_FILE*, _IO_off_t, int, int));
extern _IO_fpos_t _IO_seekpos __P((_IO_FILE*, _IO_fpos_t, int));

extern void _IO_free_backup_area __P((_IO_FILE*));

#ifdef __cplusplus
}
#endif

#endif /* _IO_STDIO_H */
Commit	Line	Data
96aa2d94 RM	1	/*
	2	Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation
	3
	4	This file is part of the GNU IO Library. This library is free
	5	software; you can redistribute it and/or modify it under the
	6	terms of the GNU General Public License as published by the
	7	Free Software Foundation; either version 2, or (at your option)
	8	any later version.
	9
	10	This library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this library; see the file COPYING. If not, write to the Free
	17	Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	18
	19	As a special exception, if you link this library with files
	20	compiled with a GNU compiler to produce an executable, this does not cause
	21	the resulting executable to be covered by the GNU General Public License.
	22	This exception does not however invalidate any other reasons why
	23	the executable file might be covered by the GNU General Public License. */
	24
	25	/* This is part of the iostream library. Written by Per Bothner. */
	26
	27	#ifndef _IO_STDIO_H
	28	#define _IO_STDIO_H
d41c6f61	29	#include <features.h>
96aa2d94 RM	30
	31	#include <_G_config.h>
	32	#define _IO_pos_t _G_fpos_t /* obsolete */
	33	#define _IO_fpos_t _G_fpos_t
	34	#define _IO_size_t _G_size_t
	35	#define _IO_ssize_t _G_ssize_t
	36	#define _IO_off_t _G_off_t
	37	#define _IO_pid_t _G_pid_t
	38	#define _IO_uid_t _G_uid_t
	39	#define _IO_HAVE_SYS_WAIT _G_HAVE_SYS_WAIT
	40	#define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE
	41	#define _IO_BUFSIZ _G_BUFSIZ
	42	#define _IO_va_list _G_va_list
	43
	44	#ifdef _G_NEED_STDARG_H
	45	/* This define avoids name pollution if we're using GNU stdarg.h */
	46	#define __need___va_list
	47	#include <stdarg.h>
	48	#ifdef __GNUC_VA_LIST
	49	#undef _IO_va_list
	50	#define _IO_va_list __gnuc_va_list
	51	#endif /* __GNUC_VA_LIST */
	52	#endif
	53
	54	#ifndef __P
f65fd747 UD	55	#if _G_HAVE_SYS_CDEFS
	56	#include <sys/cdefs.h>
	57	#else
96aa2d94 RM	58	#ifdef __STDC__
	59	#define __P(protos) protos
	60	#else
	61	#define __P(protos) ()
	62	#endif
f65fd747	63	#endif
96aa2d94 RM	64	#endif /!__P/
	65
	66	/* For backward compatibility */
	67	#ifndef _PARAMS
	68	#define _PARAMS(protos) __P(protos)
	69	#endif /!_PARAMS/
	70
	71	#ifndef __STDC__
	72	#define const
	73	#endif
	74	#define _IO_UNIFIED_JUMPTABLES 1
	75
	76	#if 0
	77	#ifdef _IO_NEED_STDARG_H
	78	#include <stdarg.h>
	79	#endif
	80	#endif
	81
	82	#ifndef EOF
	83	#define EOF (-1)
	84	#endif
	85	#ifndef NULL
f8b87ef0 UD	86	#if defined __GNUG__ && \
f8b87ef0 UD	87	(__GNUC__ > 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
f65fd747 UD	88	#define NULL (__null)
	89	#else
	90	#if !defined(__cplusplus)
96aa2d94 RM	91	#define NULL ((void*)0)
	92	#else
	93	#define NULL (0)
	94	#endif
	95	#endif
f65fd747	96	#endif
96aa2d94 RM	97
	98	#define _IOS_INPUT 1
	99	#define _IOS_OUTPUT 2
	100	#define _IOS_ATEND 4
	101	#define _IOS_APPEND 8
	102	#define _IOS_TRUNC 16
	103	#define _IOS_NOCREATE 32
	104	#define _IOS_NOREPLACE 64
	105	#define _IOS_BIN 128
	106
	107	/* Magic numbers and bits for the _flags field.
	108	The magic numbers use the high-order bits of _flags;
2c6fe0bd	109	the remaining bits are available for variable flags.
96aa2d94 RM	110	Note: The magic numbers must all be negative if stdio
	111	emulation is desired. */
	112
	113	#define _IO_MAGIC 0xFBAD0000 /* Magic number */
	114	#define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */
	115	#define _IO_MAGIC_MASK 0xFFFF0000
	116	#define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */
	117	#define _IO_UNBUFFERED 2
	118	#define _IO_NO_READS 4 /* Reading not allowed */
	119	#define _IO_NO_WRITES 8 /* Writing not allowd */
	120	#define _IO_EOF_SEEN 0x10
	121	#define _IO_ERR_SEEN 0x20
	122	#define _IO_DELETE_DONT_CLOSE 0x40 /* Don't call close(_fileno) on cleanup. */
	123	#define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/
	124	#define _IO_IN_BACKUP 0x100
	125	#define _IO_LINE_BUF 0x200
	126	#define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */
	127	#define _IO_CURRENTLY_PUTTING 0x800
	128	#define _IO_IS_APPENDING 0x1000
	129	#define _IO_IS_FILEBUF 0x2000
	130
	131	/* These are "formatting flags" matching the iostream fmtflags enum values. */
	132	#define _IO_SKIPWS 01
	133	#define _IO_LEFT 02
	134	#define _IO_RIGHT 04
	135	#define _IO_INTERNAL 010
	136	#define _IO_DEC 020
	137	#define _IO_OCT 040
	138	#define _IO_HEX 0100
	139	#define _IO_SHOWBASE 0200
	140	#define _IO_SHOWPOINT 0400
	141	#define _IO_UPPERCASE 01000
	142	#define _IO_SHOWPOS 02000
	143	#define _IO_SCIENTIFIC 04000
	144	#define _IO_FIXED 010000
	145	#define _IO_UNITBUF 020000
	146	#define _IO_STDIO 040000
	147	#define _IO_DONT_CLOSE 0100000
	148
	149
	150	struct _IO_jump_t; struct _IO_FILE;
	151
	152	/* Define the user-visible type, with user-friendly member names. */
	153	typedef struct
	154	{
	155	_IO_ssize_t (read) __P ((struct _IO_FILE , void *, _IO_ssize_t));
	156	_IO_ssize_t (write) __P ((struct _IO_FILE , const void *, _IO_ssize_t));
	157	_IO_fpos_t (seek) __P ((struct _IO_FILE , _IO_off_t, int));
	158	int (close) __P ((struct _IO_FILE ));
	159	} _IO_cookie_io_functions_t;
	160
7c713e28 RM	161	/* Handle lock. */
7c713e28 RM	162	#ifdef _IO_MTSAFE_IO
fafaa44e	163	#include <stdio-lock.h>
7c713e28 RM	164	#else
	165	typedef void _IO_lock_t;
	166	#endif
96aa2d94	167
96aa2d94 RM	168
	169	/* A streammarker remembers a position in a buffer. */
	170
	171	struct _IO_marker {
	172	struct _IO_marker *_next;
	173	struct _IO_FILE *_sbuf;
	174	/* If _pos >= 0
	175	it points to _buf->Gbase()+_pos. FIXME comment */
	176	/* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */
	177	int _pos;
	178	#if 0
	179	void set_streampos(streampos sp) { _spos = sp; }
	180	void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); }
	181	public:
	182	streammarker(streambuf *sb);
	183	~streammarker();
	184	int saving() { return _spos == -2; }
	185	int delta(streammarker&);
	186	int delta();
	187	#endif
	188	};
	189
	190	struct _IO_FILE {
	191	int _flags; /* High-order word is _IO_MAGIC; rest is flags. */
	192	#define _IO_file_flags _flags
	193
	194	/* The following pointers correspond to the C++ streambuf protocol. */
f65fd747	195	/* Note: Tk uses the _IO_read_ptr and _IO_read_end fields directly. */
96aa2d94 RM	196	char* _IO_read_ptr; /* Current read pointer */
	197	char* _IO_read_end; /* End of get area. */
	198	char* _IO_read_base; /* Start of putback+get area. */
	199	char* _IO_write_base; /* Start of put area. */
	200	char* _IO_write_ptr; /* Current put pointer. */
	201	char* _IO_write_end; /* End of put area. */
	202	char* _IO_buf_base; /* Start of reserve area. */
	203	char* _IO_buf_end; /* End of reserve area. */
	204	/* The following fields are used to support backing up and undo. */
	205	char _IO_save_base; / Pointer to start of non-current get area. */
	206	char _IO_backup_base; / Pointer to first valid character of backup area */
	207	char _IO_save_end; / Pointer to end of non-current get area. */
	208
	209	struct _IO_marker *_markers;
	210
	211	struct _IO_FILE *_chain;
	212
96aa2d94 RM	213	int _fileno;
	214	int _blksize;
	215	_IO_off_t _offset;
	216
	217	#define __HAVE_COLUMN /* temporary */
	218	/* 1+column number of pbase(); 0 is unknown. */
	219	unsigned short _cur_column;
	220	char _unused;
	221	char _shortbuf[1];
	222
	223	/* char* _save_gptr; char* _save_egptr; */
	224
7c713e28	225	_IO_lock_t *_lock;
96aa2d94 RM	226	};
	227
	228	#ifndef __cplusplus
	229	typedef struct _IO_FILE _IO_FILE;
	230	#endif
	231
	232	struct _IO_FILE_plus;
	233	extern struct _IO_FILE_plus _IO_stdin_, _IO_stdout_, _IO_stderr_;
	234	#define _IO_stdin ((_IO_FILE*)(&_IO_stdin_))
	235	#define _IO_stdout ((_IO_FILE*)(&_IO_stdout_))
	236	#define _IO_stderr ((_IO_FILE*)(&_IO_stderr_))
	237
fa0bc87c RM	238
	239	/* Special file type for fopencookie function. */
	240	struct _IO_cookie_file {
	241	struct _IO_FILE file;
	242	const void *vtable;
	243	void *cookie;
	244	_IO_cookie_io_functions_t io_functions;
	245	};
	246
	247
96aa2d94 RM	248	#ifdef __cplusplus
	249	extern "C" {
	250	#endif
	251
	252	extern int __underflow __P((_IO_FILE*));
	253	extern int __uflow __P((_IO_FILE*));
	254	extern int __overflow __P((_IO_FILE*, int));
	255
7c713e28	256	#define _IO_getc_unlocked(_fp) \
96aa2d94 RM	257	((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end ? __uflow(_fp) \
96aa2d94 RM	258	: (unsigned char)(_fp)->_IO_read_ptr++)
7c713e28	259	#define _IO_peekc_unlocked(_fp) \
96aa2d94 RM	260	((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \
	261	&& __underflow(_fp) == EOF ? EOF \
	262	: (unsigned char)(_fp)->_IO_read_ptr)
	263
7c713e28	264	#define _IO_putc_unlocked(_ch, _fp) \
96aa2d94 RM	265	(((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \
	266	? __overflow(_fp, (unsigned char)(_ch)) \
	267	: (unsigned char)(*(_fp)->_IO_write_ptr++ = (_ch)))
	268
7c713e28 RM	269	#define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0)
7c713e28 RM	270	#define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0)
96aa2d94	271
d41c6f61 UD	272	extern int _IO_getc __P ((_IO_FILE *__fp));
	273	extern int _IO_putc __P ((int __c, _IO_FILE *__fp));
	274	extern int _IO_feof __P ((_IO_FILE *__fp));
	275	extern int _IO_ferror __P ((_IO_FILE *__fp));
	276
	277	extern int _IO_peekc_locked __P ((_IO_FILE *__fp));
	278
96aa2d94 RM	279	/* This one is for Emacs. */
	280	#define _IO_PENDING_OUTPUT_COUNT(_fp) \
	281	((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)
	282
7c713e28 RM	283	extern void _IO_flockfile __P ((_IO_FILE *));
7c713e28 RM	284	extern void _IO_funlockfile __P ((_IO_FILE *));
d41c6f61	285	extern int _IO_ftrylockfile __P ((_IO_FILE *));
7c713e28	286
ba1ffaa1	287	#ifndef _IO_MTSAFE_IO
d41c6f61 UD	288	# define _IO_flockfile(_fp) /**/
	289	# define _IO_funlockfile(_fp) /**/
	290	# define _IO_ftrylockfile(_fp) /**/
68dbb3a6 UD	291	# define _IO_cleanup_region_start(_fct, _fp) /**/
68dbb3a6 UD	292	# define _IO_cleanup_region_end(_Doit) /**/
edf5b2d7	293	#endif /* !_IO_MTSAFE_IO */
7c713e28	294
19361cb7 UD	295	/* XXX Should we allow a symbol to be defined which selects the efficient
	296	implementation when the user is really sure no threaded functions ever
	297	will be used? */
	298	#if 1
d41c6f61 UD	299	# define _IO_getc(_fp) _IO_getc (_fp)
	300	# define _IO_peekc(_fp) _IO_peekc_locked (_fp)
	301	# define _IO_putc(_ch, _fp) _IO_putc (_ch, _fp)
	302	# define _IO_feof(_fp) _IO_feof (_fp)
	303	# define _IO_ferror(_fp) _IO_ferror (_fp)
	304	#else
	305	# define _IO_getc(_fp) _IO_getc_unlocked (_fp)
	306	# define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
	307	# define _IO_putc(_ch, _fp) _IO_putc_unlocked (_ch, _fp)
	308	# define _IO_feof(_fp) _IO_feof_unlocked (_fp)
	309	# define _IO_ferror(_fp) _IO_ferror_unlocked (_fp)
	310	#endif
7c713e28	311
96aa2d94 RM	312	extern int _IO_vfscanf __P((_IO_FILE, const char, _IO_va_list, int*));
	313	extern int _IO_vfprintf __P((_IO_FILE, const char, _IO_va_list));
	314	extern _IO_ssize_t _IO_padn __P((_IO_FILE *, int, _IO_ssize_t));
	315	extern _IO_size_t _IO_sgetn __P((_IO_FILE , void, _IO_size_t));
	316
8a523922 UD	317	extern _IO_fpos_t _IO_seekoff __P((_IO_FILE*, _IO_off_t, int, int));
	318	extern _IO_fpos_t _IO_seekpos __P((_IO_FILE*, _IO_fpos_t, int));
	319
96aa2d94 RM	320	extern void _IO_free_backup_area __P((_IO_FILE*));
	321
	322	#ifdef __cplusplus
	323	}
	324	#endif
	325
	326	#endif /* _IO_STDIO_H */