1 /* Copyright (C) 1991-1995,1997-2007,2009,2011,2012
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Per Bothner <bothner@cygnus.com>.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 As a special exception, if you link the code in this file with
22 files compiled with a GNU compiler to produce an executable,
23 that does not cause the resulting executable to be covered by
24 the GNU Lesser General Public License. This exception does not
25 however invalidate any other reasons why the executable file
26 might be covered by the GNU Lesser General Public License.
27 This exception applies to code released by its copyright holders
28 in files containing the exception. */
33 #include <_G_config.h>
34 /* ALL of these should be defined in _G_config.h */
35 #define _IO_pos_t _G_fpos_t /* obsolete */
36 #define _IO_fpos_t _G_fpos_t
37 #define _IO_fpos64_t _G_fpos64_t
38 #define _IO_size_t _G_size_t
39 #define _IO_ssize_t _G_ssize_t
40 #define _IO_off_t _G_off_t
41 #define _IO_off64_t _G_off64_t
42 #define _IO_pid_t _G_pid_t
43 #define _IO_uid_t _G_uid_t
44 #define _IO_iconv_t _G_iconv_t
45 #define _IO_HAVE_SYS_WAIT _G_HAVE_SYS_WAIT
46 #define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE
47 #define _IO_BUFSIZ _G_BUFSIZ
48 #define _IO_va_list _G_va_list
49 #define _IO_wint_t _G_wint_t
51 #ifdef _G_NEED_STDARG_H
52 /* This define avoids name pollution if we're using GNU stdarg.h */
53 # define __need___va_list
55 # ifdef __GNUC_VA_LIST
57 # define _IO_va_list __gnuc_va_list
58 # endif /* __GNUC_VA_LIST */
62 # if _G_HAVE_SYS_CDEFS
63 # include <sys/cdefs.h>
75 /* For backward compatibility */
77 # define _PARAMS(protos) __P(protos)
85 #define _IO_UNIFIED_JUMPTABLES 1
86 #ifndef _G_HAVE_PRINTF_FP
87 # define _IO_USE_DTOA 1
94 # if defined __GNUG__ && \
95 (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
96 # define NULL (__null)
98 # if !defined(__cplusplus)
99 # define NULL ((void*)0)
107 #define _IOS_OUTPUT 2
109 #define _IOS_APPEND 8
110 #define _IOS_TRUNC 16
111 #define _IOS_NOCREATE 32
112 #define _IOS_NOREPLACE 64
115 /* Magic numbers and bits for the _flags field.
116 The magic numbers use the high-order bits of _flags;
117 the remaining bits are available for variable flags.
118 Note: The magic numbers must all be negative if stdio
119 emulation is desired. */
121 #define _IO_MAGIC 0xFBAD0000 /* Magic number */
122 #define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */
123 #define _IO_MAGIC_MASK 0xFFFF0000
124 #define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */
125 #define _IO_UNBUFFERED 2
126 #define _IO_NO_READS 4 /* Reading not allowed */
127 #define _IO_NO_WRITES 8 /* Writing not allowd */
128 #define _IO_EOF_SEEN 0x10
129 #define _IO_ERR_SEEN 0x20
130 #define _IO_DELETE_DONT_CLOSE 0x40 /* Don't call close(_fileno) on cleanup. */
131 #define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/
132 #define _IO_IN_BACKUP 0x100
133 #define _IO_LINE_BUF 0x200
134 #define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */
135 #define _IO_CURRENTLY_PUTTING 0x800
136 #define _IO_IS_APPENDING 0x1000
137 #define _IO_IS_FILEBUF 0x2000
138 #define _IO_BAD_SEEN 0x4000
139 #define _IO_USER_LOCK 0x8000
141 #define _IO_FLAGS2_MMAP 1
142 #define _IO_FLAGS2_NOTCANCEL 2
144 # define _IO_FLAGS2_FORTIFY 4
146 #define _IO_FLAGS2_USER_WBUF 8
148 # define _IO_FLAGS2_SCANF_STD 16
149 # define _IO_FLAGS2_NOCLOSE 32
150 # define _IO_FLAGS2_CLOEXEC 64
153 /* These are "formatting flags" matching the iostream fmtflags enum values. */
154 #define _IO_SKIPWS 01
157 #define _IO_INTERNAL 010
161 #define _IO_SHOWBASE 0200
162 #define _IO_SHOWPOINT 0400
163 #define _IO_UPPERCASE 01000
164 #define _IO_SHOWPOS 02000
165 #define _IO_SCIENTIFIC 04000
166 #define _IO_FIXED 010000
167 #define _IO_UNITBUF 020000
168 #define _IO_STDIO 040000
169 #define _IO_DONT_CLOSE 0100000
170 #define _IO_BOOLALPHA 0200000
173 struct _IO_jump_t; struct _IO_FILE;
177 # if defined __GLIBC__ && __GLIBC__ >= 2
178 # include <bits/stdio-lock.h>
180 /*# include <comthread.h>*/
183 typedef void _IO_lock_t;
187 /* A streammarker remembers a position in a buffer. */
190 struct _IO_marker *_next;
191 struct _IO_FILE *_sbuf;
193 it points to _buf->Gbase()+_pos. FIXME comment */
194 /* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */
197 void set_streampos(streampos sp) { _spos = sp; }
198 void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); }
200 streammarker(streambuf *sb);
202 int saving() { return _spos == -2; }
203 int delta(streammarker&);
208 /* This is the structure from the libstdc++ codecvt class. */
209 enum __codecvt_result
217 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
218 /* The order of the elements in the following struct must match the order
219 of the virtual functions in the libstdc++ codecvt class. */
222 void (*__codecvt_destr) (struct _IO_codecvt *);
223 enum __codecvt_result (*__codecvt_do_out) (struct _IO_codecvt *,
227 const wchar_t **, char *,
229 enum __codecvt_result (*__codecvt_do_unshift) (struct _IO_codecvt *,
230 __mbstate_t *, char *,
232 enum __codecvt_result (*__codecvt_do_in) (struct _IO_codecvt *,
234 const char *, const char *,
235 const char **, wchar_t *,
236 wchar_t *, wchar_t **);
237 int (*__codecvt_do_encoding) (struct _IO_codecvt *);
238 int (*__codecvt_do_always_noconv) (struct _IO_codecvt *);
239 int (*__codecvt_do_length) (struct _IO_codecvt *, __mbstate_t *,
240 const char *, const char *, _IO_size_t);
241 int (*__codecvt_do_max_length) (struct _IO_codecvt *);
244 _IO_iconv_t __cd_out;
247 /* Extra data for wide character streams. */
250 wchar_t *_IO_read_ptr; /* Current read pointer */
251 wchar_t *_IO_read_end; /* End of get area. */
252 wchar_t *_IO_read_base; /* Start of putback+get area. */
253 wchar_t *_IO_write_base; /* Start of put area. */
254 wchar_t *_IO_write_ptr; /* Current put pointer. */
255 wchar_t *_IO_write_end; /* End of put area. */
256 wchar_t *_IO_buf_base; /* Start of reserve area. */
257 wchar_t *_IO_buf_end; /* End of reserve area. */
258 /* The following fields are used to support backing up and undo. */
259 wchar_t *_IO_save_base; /* Pointer to start of non-current get area. */
260 wchar_t *_IO_backup_base; /* Pointer to first valid character of
262 wchar_t *_IO_save_end; /* Pointer to end of non-current get area. */
264 __mbstate_t _IO_state;
265 __mbstate_t _IO_last_state;
266 struct _IO_codecvt _codecvt;
268 wchar_t _shortbuf[1];
270 const struct _IO_jump_t *_wide_vtable;
275 int _flags; /* High-order word is _IO_MAGIC; rest is flags. */
276 #define _IO_file_flags _flags
278 /* The following pointers correspond to the C++ streambuf protocol. */
279 /* Note: Tk uses the _IO_read_ptr and _IO_read_end fields directly. */
280 char* _IO_read_ptr; /* Current read pointer */
281 char* _IO_read_end; /* End of get area. */
282 char* _IO_read_base; /* Start of putback+get area. */
283 char* _IO_write_base; /* Start of put area. */
284 char* _IO_write_ptr; /* Current put pointer. */
285 char* _IO_write_end; /* End of put area. */
286 char* _IO_buf_base; /* Start of reserve area. */
287 char* _IO_buf_end; /* End of reserve area. */
288 /* The following fields are used to support backing up and undo. */
289 char *_IO_save_base; /* Pointer to start of non-current get area. */
290 char *_IO_backup_base; /* Pointer to first valid character of backup area */
291 char *_IO_save_end; /* Pointer to end of non-current get area. */
293 struct _IO_marker *_markers;
295 struct _IO_FILE *_chain;
303 _IO_off_t _old_offset; /* This used to be _offset but it's too small. */
305 #define __HAVE_COLUMN /* temporary */
306 /* 1+column number of pbase(); 0 is unknown. */
307 unsigned short _cur_column;
308 signed char _vtable_offset;
311 /* char* _save_gptr; char* _save_egptr; */
314 #ifdef _IO_USE_OLD_IO_FILE
317 struct _IO_FILE_complete
319 struct _IO_FILE _file;
321 #if defined _G_IO_IO_FILE_VERSION && _G_IO_IO_FILE_VERSION == 0x20001
323 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
324 /* Wide character stream stuff. */
325 struct _IO_codecvt *_codecvt;
326 struct _IO_wide_data *_wide_data;
327 struct _IO_FILE *_freeres_list;
329 size_t _freeres_size;
338 /* Make sure we don't get into trouble again. */
339 char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];
344 typedef struct _IO_FILE _IO_FILE;
347 struct _IO_FILE_plus;
349 extern struct _IO_FILE_plus _IO_2_1_stdin_;
350 extern struct _IO_FILE_plus _IO_2_1_stdout_;
351 extern struct _IO_FILE_plus _IO_2_1_stderr_;
353 #define _IO_stdin ((_IO_FILE*)(&_IO_2_1_stdin_))
354 #define _IO_stdout ((_IO_FILE*)(&_IO_2_1_stdout_))
355 #define _IO_stderr ((_IO_FILE*)(&_IO_2_1_stderr_))
357 extern _IO_FILE *_IO_stdin attribute_hidden;
358 extern _IO_FILE *_IO_stdout attribute_hidden;
359 extern _IO_FILE *_IO_stderr attribute_hidden;
363 /* Functions to do I/O and file management for a stream. */
365 /* Read NBYTES bytes from COOKIE into a buffer pointed to by BUF.
366 Return number of bytes read. */
367 typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
369 /* Write N bytes pointed to by BUF to COOKIE. Write all N bytes
370 unless there is an error. Return number of bytes written, or -1 if
371 there is an error without writing anything. If the file has been
372 opened for append (__mode.__append set), then set the file pointer
373 to the end of the file and then do the write; if not, just write at
374 the current file pointer. */
375 typedef __ssize_t __io_write_fn (void *__cookie, const char *__buf,
378 /* Move COOKIE's file position to *POS bytes from the
379 beginning of the file (if W is SEEK_SET),
380 the current position (if W is SEEK_CUR),
381 or the end of the file (if W is SEEK_END).
382 Set *POS to the new file position.
383 Returns zero if successful, nonzero if not. */
384 typedef int __io_seek_fn (void *__cookie, _IO_off64_t *__pos, int __w);
387 typedef int __io_close_fn (void *__cookie);
391 /* User-visible names for the above. */
392 typedef __io_read_fn cookie_read_function_t;
393 typedef __io_write_fn cookie_write_function_t;
394 typedef __io_seek_fn cookie_seek_function_t;
395 typedef __io_close_fn cookie_close_function_t;
397 /* The structure with the cookie function pointers. */
400 __io_read_fn *read; /* Read bytes. */
401 __io_write_fn *write; /* Write bytes. */
402 __io_seek_fn *seek; /* Seek/tell file position. */
403 __io_close_fn *close; /* Close file. */
404 } _IO_cookie_io_functions_t;
405 typedef _IO_cookie_io_functions_t cookie_io_functions_t;
407 struct _IO_cookie_file;
409 /* Initialize one of those. */
410 extern void _IO_cookie_init (struct _IO_cookie_file *__cfile, int __read_write,
411 void *__cookie, _IO_cookie_io_functions_t __fns);
419 extern int __underflow (_IO_FILE *);
420 extern int __uflow (_IO_FILE *);
421 extern int __overflow (_IO_FILE *, int);
422 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
423 extern _IO_wint_t __wunderflow (_IO_FILE *);
424 extern _IO_wint_t __wuflow (_IO_FILE *);
425 extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t);
429 # define _IO_BE(expr, res) __builtin_expect ((expr), res)
431 # define _IO_BE(expr, res) (expr)
434 #define _IO_getc_unlocked(_fp) \
435 (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
436 ? __uflow (_fp) : *(unsigned char *) (_fp)->_IO_read_ptr++)
437 #define _IO_peekc_unlocked(_fp) \
438 (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
439 && __underflow (_fp) == EOF ? EOF \
440 : *(unsigned char *) (_fp)->_IO_read_ptr)
441 #define _IO_putc_unlocked(_ch, _fp) \
442 (_IO_BE ((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end, 0) \
443 ? __overflow (_fp, (unsigned char) (_ch)) \
444 : (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch)))
446 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
447 # define _IO_getwc_unlocked(_fp) \
448 (_IO_BE ((_fp)->_wide_data == NULL \
449 || ((_fp)->_wide_data->_IO_read_ptr \
450 >= (_fp)->_wide_data->_IO_read_end), 0) \
451 ? __wuflow (_fp) : (_IO_wint_t) *(_fp)->_wide_data->_IO_read_ptr++)
452 # define _IO_putwc_unlocked(_wch, _fp) \
453 (_IO_BE ((_fp)->_wide_data == NULL \
454 || ((_fp)->_wide_data->_IO_write_ptr \
455 >= (_fp)->_wide_data->_IO_write_end), 0) \
456 ? __woverflow (_fp, _wch) \
457 : (_IO_wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch)))
460 #define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0)
461 #define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0)
463 extern int _IO_getc (_IO_FILE *__fp);
464 extern int _IO_putc (int __c, _IO_FILE *__fp);
465 extern int _IO_feof (_IO_FILE *__fp) __THROW;
466 extern int _IO_ferror (_IO_FILE *__fp) __THROW;
468 extern int _IO_peekc_locked (_IO_FILE *__fp);
470 /* This one is for Emacs. */
471 #define _IO_PENDING_OUTPUT_COUNT(_fp) \
472 ((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)
474 extern void _IO_flockfile (_IO_FILE *) __THROW;
475 extern void _IO_funlockfile (_IO_FILE *) __THROW;
476 extern int _IO_ftrylockfile (_IO_FILE *) __THROW;
479 # define _IO_peekc(_fp) _IO_peekc_locked (_fp)
480 # define _IO_flockfile(_fp) \
481 if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_flockfile (_fp)
482 # define _IO_funlockfile(_fp) \
483 if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_funlockfile (_fp)
485 # define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
486 # define _IO_flockfile(_fp) /**/
487 # define _IO_funlockfile(_fp) /**/
488 # define _IO_ftrylockfile(_fp) /**/
489 # define _IO_cleanup_region_start(_fct, _fp) /**/
490 # define _IO_cleanup_region_end(_Doit) /**/
491 #endif /* !_IO_MTSAFE_IO */
493 extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
494 _IO_va_list, int *__restrict);
495 extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
497 extern _IO_ssize_t _IO_padn (_IO_FILE *, int, _IO_ssize_t);
498 extern _IO_size_t _IO_sgetn (_IO_FILE *, void *, _IO_size_t);
500 extern _IO_off64_t _IO_seekoff (_IO_FILE *, _IO_off64_t, int, int);
501 extern _IO_off64_t _IO_seekpos (_IO_FILE *, _IO_off64_t, int);
503 extern void _IO_free_backup_area (_IO_FILE *) __THROW;
505 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
506 extern _IO_wint_t _IO_getwc (_IO_FILE *__fp);
507 extern _IO_wint_t _IO_putwc (wchar_t __wc, _IO_FILE *__fp);
508 extern int _IO_fwide (_IO_FILE *__fp, int __mode) __THROW;
510 /* While compiling glibc we have to handle compatibility with very old
512 # if defined _LIBC && defined SHARED
513 # include <shlib-compat.h>
514 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
515 # define _IO_fwide_maybe_incompatible \
516 (__builtin_expect (&_IO_stdin_used == NULL, 0))
517 extern const int _IO_stdin_used;
518 weak_extern (_IO_stdin_used);
521 # ifndef _IO_fwide_maybe_incompatible
522 # define _IO_fwide_maybe_incompatible (0)
524 /* A special optimized version of the function above. It optimizes the
525 case of initializing an unoriented byte stream. */
526 # define _IO_fwide(__fp, __mode) \
527 ({ int __result = (__mode); \
528 if (__result < 0 && ! _IO_fwide_maybe_incompatible) \
530 if ((__fp)->_mode == 0) \
531 /* We know that all we have to do is to set the flag. */ \
532 (__fp)->_mode = -1; \
533 __result = (__fp)->_mode; \
535 else if (__builtin_constant_p (__mode) && (__mode) == 0) \
536 __result = _IO_fwide_maybe_incompatible ? -1 : (__fp)->_mode; \
538 __result = _IO_fwide (__fp, __result); \
542 extern int _IO_vfwscanf (_IO_FILE * __restrict, const wchar_t * __restrict,
543 _IO_va_list, int *__restrict);
544 extern int _IO_vfwprintf (_IO_FILE *__restrict, const wchar_t *__restrict,
546 extern _IO_ssize_t _IO_wpadn (_IO_FILE *, wint_t, _IO_ssize_t);
547 extern void _IO_free_wbackup_area (_IO_FILE *) __THROW;
551 # include <bits/libio-ldbl.h>
558 #endif /* _IO_STDIO_H */