1 /* Copyright (C) 1993, 1997-2001, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 As a special exception, if you link the code in this file with
20 files compiled with a GNU compiler to produce an executable,
21 that does not cause the resulting executable to be covered by
22 the GNU Lesser General Public License. This exception does not
23 however invalidate any other reasons why the executable file
24 might be covered by the GNU Lesser General Public License.
25 This exception applies to code released by its copyright holders
26 in files containing the exception. */
30 # define __set_errno(Val) errno = (Val)
32 #if defined __GLIBC__ && __GLIBC__ >= 2
33 # include <bits/libc-lock.h>
35 /*# include <comthread.h>*/
40 /* Control of exported symbols. Used in glibc. By default we don't
43 # define INTUSE(name) name
49 # define INTDEF2(name)
51 #ifndef libc_hidden_proto
52 # define libc_hidden_proto(name)
54 #ifndef libc_hidden_def
55 # define libc_hidden_def(name)
57 #ifndef libc_hidden_weak
58 # define libc_hidden_weak(name)
65 #define _IO_seek_set 0
66 #define _IO_seek_cur 1
67 #define _IO_seek_end 2
69 /* THE JUMPTABLE FUNCTIONS.
71 * The _IO_FILE type is used to implement the FILE type in GNU libc,
72 * as well as the streambuf class in GNU iostreams for C++.
73 * These are all the same, just used differently.
74 * An _IO_FILE (or FILE) object is allows followed by a pointer to
75 * a jump table (of pointers to functions). The pointer is accessed
76 * with the _IO_JUMPS macro. The jump table has a eccentric format,
77 * so as to be compatible with the layout of a C++ virtual function table.
78 * (as implemented by g++). When a pointer to a streambuf object is
79 * coerced to an (_IO_FILE*), then _IO_JUMPS on the result just
80 * happens to point to the virtual function table of the streambuf.
81 * Thus the _IO_JUMPS function table used for C stdio/libio does
82 * double duty as the virtual function table for C++ streambuf.
84 * The entries in the _IO_JUMPS function table (and hence also the
85 * virtual functions of a streambuf) are described below.
86 * The first parameter of each function entry is the _IO_FILE/streambuf
87 * object being acted on (i.e. the 'this' parameter).
90 #if (!defined _IO_USE_OLD_IO_FILE \
91 && (!defined _G_IO_NO_BACKWARD_COMPAT || _G_IO_NO_BACKWARD_COMPAT == 0))
92 # define _IO_JUMPS_OFFSET 1
95 #define _IO_JUMPS(THIS) (THIS)->vtable
96 #define _IO_WIDE_JUMPS(THIS) ((struct _IO_FILE *) (THIS))->_wide_data->_wide_vtable
97 #define _IO_CHECK_WIDE(THIS) (((struct _IO_FILE *) (THIS))->_wide_data != NULL)
100 # define _IO_JUMPS_FUNC(THIS) \
101 (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS ((struct _IO_FILE_plus *) (THIS)) \
102 + (THIS)->_vtable_offset))
104 # define _IO_JUMPS_FUNC(THIS) _IO_JUMPS ((struct _IO_FILE_plus *) (THIS))
106 #define _IO_WIDE_JUMPS_FUNC(THIS) _IO_WIDE_JUMPS(THIS)
107 #ifdef _G_USING_THUNKS
108 # define JUMP_FIELD(TYPE, NAME) TYPE NAME
109 # define JUMP0(FUNC, THIS) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS)
110 # define JUMP1(FUNC, THIS, X1) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1)
111 # define JUMP2(FUNC, THIS, X1, X2) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2)
112 # define JUMP3(FUNC, THIS, X1,X2,X3) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3)
113 # define JUMP_INIT(NAME, VALUE) VALUE
114 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT (dummy2, 0)
116 # define WJUMP0(FUNC, THIS) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS)
117 # define WJUMP1(FUNC, THIS, X1) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1)
118 # define WJUMP2(FUNC, THIS, X1, X2) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2)
119 # define WJUMP3(FUNC, THIS, X1,X2,X3) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3)
121 /* These macros will change when we re-implement vtables to use "thunks"! */
122 # define JUMP_FIELD(TYPE, NAME) struct { short delta1, delta2; TYPE pfn; } NAME
123 # define JUMP0(FUNC, THIS) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
124 # define JUMP1(FUNC, THIS, X1) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
125 # define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
126 # define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
127 # define JUMP_INIT(NAME, VALUE) {0, 0, VALUE}
128 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0)
130 # define WJUMP0(FUNC, THIS) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
131 # define WJUMP1(FUNC, THIS, X1) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
132 # define WJUMP2(FUNC, THIS, X1, X2) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
133 # define WJUMP3(FUNC, THIS, X1,X2,X3) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
136 /* The 'finish' function does any final cleaning up of an _IO_FILE object.
137 It does not delete (free) it, but does everything else to finalize it.
138 It matches the streambuf::~streambuf virtual destructor. */
139 typedef void (*_IO_finish_t
) __PMT ((_IO_FILE
*, int)); /* finalize */
140 #define _IO_FINISH(FP) JUMP1 (__finish, FP, 0)
141 #define _IO_WFINISH(FP) WJUMP1 (__finish, FP, 0)
143 /* The 'overflow' hook flushes the buffer.
144 The second argument is a character, or EOF.
145 It matches the streambuf::overflow virtual function. */
146 typedef int (*_IO_overflow_t
) __PMT ((_IO_FILE
*, int));
147 #define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH)
148 #define _IO_WOVERFLOW(FP, CH) WJUMP1 (__overflow, FP, CH)
150 /* The 'underflow' hook tries to fills the get buffer.
151 It returns the next character (as an unsigned char) or EOF. The next
152 character remains in the get buffer, and the get position is not changed.
153 It matches the streambuf::underflow virtual function. */
154 typedef int (*_IO_underflow_t
) __PMT ((_IO_FILE
*));
155 #define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP)
156 #define _IO_WUNDERFLOW(FP) WJUMP0 (__underflow, FP)
158 /* The 'uflow' hook returns the next character in the input stream
159 (cast to unsigned char), and increments the read position;
160 EOF is returned on failure.
161 It matches the streambuf::uflow virtual function, which is not in the
162 cfront implementation, but was added to C++ by the ANSI/ISO committee. */
163 #define _IO_UFLOW(FP) JUMP0 (__uflow, FP)
164 #define _IO_WUFLOW(FP) WJUMP0 (__uflow, FP)
166 /* The 'pbackfail' hook handles backing up.
167 It matches the streambuf::pbackfail virtual function. */
168 typedef int (*_IO_pbackfail_t
) __PMT ((_IO_FILE
*, int));
169 #define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH)
170 #define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH)
172 /* The 'xsputn' hook writes upto N characters from buffer DATA.
173 Returns the number of character actually written.
174 It matches the streambuf::xsputn virtual function. */
175 typedef _IO_size_t (*_IO_xsputn_t
) __PMT ((_IO_FILE
*FP
, const void *DATA
,
177 #define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N)
178 #define _IO_WXSPUTN(FP, DATA, N) WJUMP2 (__xsputn, FP, DATA, N)
180 /* The 'xsgetn' hook reads upto N characters into buffer DATA.
181 Returns the number of character actually read.
182 It matches the streambuf::xsgetn virtual function. */
183 typedef _IO_size_t (*_IO_xsgetn_t
) __PMT ((_IO_FILE
*FP
, void *DATA
,
185 #define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N)
186 #define _IO_WXSGETN(FP, DATA, N) WJUMP2 (__xsgetn, FP, DATA, N)
188 /* The 'seekoff' hook moves the stream position to a new position
189 relative to the start of the file (if DIR==0), the current position
190 (MODE==1), or the end of the file (MODE==2).
191 It matches the streambuf::seekoff virtual function.
192 It is also used for the ANSI fseek function. */
193 typedef _IO_off64_t (*_IO_seekoff_t
) __PMT ((_IO_FILE
*FP
, _IO_off64_t OFF
,
195 #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE)
196 #define _IO_WSEEKOFF(FP, OFF, DIR, MODE) WJUMP3 (__seekoff, FP, OFF, DIR, MODE)
198 /* The 'seekpos' hook also moves the stream position,
199 but to an absolute position given by a fpos64_t (seekpos).
200 It matches the streambuf::seekpos virtual function.
201 It is also used for the ANSI fgetpos and fsetpos functions. */
202 /* The _IO_seek_cur and _IO_seek_end options are not allowed. */
203 typedef _IO_off64_t (*_IO_seekpos_t
) __PMT ((_IO_FILE
*, _IO_off64_t
, int));
204 #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS)
205 #define _IO_WSEEKPOS(FP, POS, FLAGS) WJUMP2 (__seekpos, FP, POS, FLAGS)
207 /* The 'setbuf' hook gives a buffer to the file.
208 It matches the streambuf::setbuf virtual function. */
209 typedef _IO_FILE
* (*_IO_setbuf_t
) __PMT ((_IO_FILE
*, char *, _IO_ssize_t
));
210 #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH)
211 #define _IO_WSETBUF(FP, BUFFER, LENGTH) WJUMP2 (__setbuf, FP, BUFFER, LENGTH)
213 /* The 'sync' hook attempts to synchronize the internal data structures
214 of the file with the external state.
215 It matches the streambuf::sync virtual function. */
216 typedef int (*_IO_sync_t
) __PMT ((_IO_FILE
*));
217 #define _IO_SYNC(FP) JUMP0 (__sync, FP)
218 #define _IO_WSYNC(FP) WJUMP0 (__sync, FP)
220 /* The 'doallocate' hook is used to tell the file to allocate a buffer.
221 It matches the streambuf::doallocate virtual function, which is not
222 in the ANSI/ISO C++ standard, but is part traditional implementations. */
223 typedef int (*_IO_doallocate_t
) __PMT ((_IO_FILE
*));
224 #define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP)
225 #define _IO_WDOALLOCATE(FP) WJUMP0 (__doallocate, FP)
227 /* The following four hooks (sysread, syswrite, sysclose, sysseek, and
228 sysstat) are low-level hooks specific to this implementation.
229 There is no correspondence in the ANSI/ISO C++ standard library.
230 The hooks basically correspond to the Unix system functions
231 (read, write, close, lseek, and stat) except that a _IO_FILE*
232 parameter is used instead of a integer file descriptor; the default
233 implementation used for normal files just calls those functions.
234 The advantage of overriding these functions instead of the higher-level
235 ones (underflow, overflow etc) is that you can leave all the buffering
236 higher-level functions. */
238 /* The 'sysread' hook is used to read data from the external file into
239 an existing buffer. It generalizes the Unix read(2) function.
240 It matches the streambuf::sys_read virtual function, which is
241 specific to this implementation. */
242 typedef _IO_ssize_t (*_IO_read_t
) __PMT ((_IO_FILE
*, void *, _IO_ssize_t
));
243 #define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN)
244 #define _IO_WSYSREAD(FP, DATA, LEN) WJUMP2 (__read, FP, DATA, LEN)
246 /* The 'syswrite' hook is used to write data from an existing buffer
247 to an external file. It generalizes the Unix write(2) function.
248 It matches the streambuf::sys_write virtual function, which is
249 specific to this implementation. */
250 typedef _IO_ssize_t (*_IO_write_t
) __PMT ((_IO_FILE
*, const void *,
252 #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN)
253 #define _IO_WSYSWRITE(FP, DATA, LEN) WJUMP2 (__write, FP, DATA, LEN)
255 /* The 'sysseek' hook is used to re-position an external file.
256 It generalizes the Unix lseek(2) function.
257 It matches the streambuf::sys_seek virtual function, which is
258 specific to this implementation. */
259 typedef _IO_off64_t (*_IO_seek_t
) __PMT ((_IO_FILE
*, _IO_off64_t
, int));
260 #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE)
261 #define _IO_WSYSSEEK(FP, OFFSET, MODE) WJUMP2 (__seek, FP, OFFSET, MODE)
263 /* The 'sysclose' hook is used to finalize (close, finish up) an
264 external file. It generalizes the Unix close(2) function.
265 It matches the streambuf::sys_close virtual function, which is
266 specific to this implementation. */
267 typedef int (*_IO_close_t
) __PMT ((_IO_FILE
*)); /* finalize */
268 #define _IO_SYSCLOSE(FP) JUMP0 (__close, FP)
269 #define _IO_WSYSCLOSE(FP) WJUMP0 (__close, FP)
271 /* The 'sysstat' hook is used to get information about an external file
272 into a struct stat buffer. It generalizes the Unix fstat(2) call.
273 It matches the streambuf::sys_stat virtual function, which is
274 specific to this implementation. */
275 typedef int (*_IO_stat_t
) __PMT ((_IO_FILE
*, void *));
276 #define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF)
277 #define _IO_WSYSSTAT(FP, BUF) WJUMP1 (__stat, FP, BUF)
279 /* The 'showmany' hook can be used to get an image how much input is
280 available. In many cases the answer will be 0 which means unknown
281 but some cases one can provide real information. */
282 typedef int (*_IO_showmanyc_t
) __PMT ((_IO_FILE
*));
283 #define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP)
284 #define _IO_WSHOWMANYC(FP) WJUMP0 (__showmanyc, FP)
286 /* The 'imbue' hook is used to get information about the currently
287 installed locales. */
288 typedef void (*_IO_imbue_t
) __PMT ((_IO_FILE
*, void *));
289 #define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE)
290 #define _IO_WIMBUE(FP, LOCALE) WJUMP1 (__imbue, FP, LOCALE)
293 #define _IO_CHAR_TYPE char /* unsigned char ? */
294 #define _IO_INT_TYPE int
298 JUMP_FIELD(_G_size_t
, __dummy
);
299 #ifdef _G_USING_THUNKS
300 JUMP_FIELD(_G_size_t
, __dummy2
);
302 JUMP_FIELD(_IO_finish_t
, __finish
);
303 JUMP_FIELD(_IO_overflow_t
, __overflow
);
304 JUMP_FIELD(_IO_underflow_t
, __underflow
);
305 JUMP_FIELD(_IO_underflow_t
, __uflow
);
306 JUMP_FIELD(_IO_pbackfail_t
, __pbackfail
);
308 JUMP_FIELD(_IO_xsputn_t
, __xsputn
);
309 JUMP_FIELD(_IO_xsgetn_t
, __xsgetn
);
310 JUMP_FIELD(_IO_seekoff_t
, __seekoff
);
311 JUMP_FIELD(_IO_seekpos_t
, __seekpos
);
312 JUMP_FIELD(_IO_setbuf_t
, __setbuf
);
313 JUMP_FIELD(_IO_sync_t
, __sync
);
314 JUMP_FIELD(_IO_doallocate_t
, __doallocate
);
315 JUMP_FIELD(_IO_read_t
, __read
);
316 JUMP_FIELD(_IO_write_t
, __write
);
317 JUMP_FIELD(_IO_seek_t
, __seek
);
318 JUMP_FIELD(_IO_close_t
, __close
);
319 JUMP_FIELD(_IO_stat_t
, __stat
);
320 JUMP_FIELD(_IO_showmanyc_t
, __showmanyc
);
321 JUMP_FIELD(_IO_imbue_t
, __imbue
);
328 /* We always allocate an extra word following an _IO_FILE.
329 This contains a pointer to the function jump table used.
330 This is for compatibility with C++ streambuf; the word can
331 be used to smash to a pointer to a virtual function table. */
336 const struct _IO_jump_t
*vtable
;
339 /* Special file type for fopencookie function. */
340 struct _IO_cookie_file
342 struct _IO_FILE_plus __fp
;
344 _IO_cookie_io_functions_t __io_functions
;
347 _IO_FILE
*_IO_fopencookie (void *cookie
, const char *mode
,
348 _IO_cookie_io_functions_t io_functions
);
351 /* Iterator type for walking global linked list of _IO_FILE objects. */
353 typedef struct _IO_FILE
*_IO_ITER
;
355 /* Generic functions */
357 extern void _IO_switch_to_main_get_area
__P ((_IO_FILE
*));
358 extern void _IO_switch_to_backup_area
__P ((_IO_FILE
*));
359 extern int _IO_switch_to_get_mode
__P ((_IO_FILE
*));
360 extern void _IO_init
__P ((_IO_FILE
*, int));
361 extern int _IO_sputbackc
__P ((_IO_FILE
*, int));
362 extern int _IO_sungetc
__P ((_IO_FILE
*));
363 extern void _IO_un_link
__P ((struct _IO_FILE_plus
*));
364 extern void _IO_link_in
__P ((struct _IO_FILE_plus
*));
365 extern void _IO_doallocbuf
__P ((_IO_FILE
*));
366 extern void _IO_unsave_markers
__P ((_IO_FILE
*));
367 extern void _IO_setb
__P ((_IO_FILE
*, char *, char *, int));
368 extern unsigned _IO_adjust_column
__P ((unsigned, const char *, int));
369 #define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n)
371 extern void _IO_switch_to_main_wget_area
__P ((_IO_FILE
*));
372 extern void _IO_switch_to_wbackup_area
__P ((_IO_FILE
*));
373 extern int _IO_switch_to_wget_mode
__P ((_IO_FILE
*));
374 extern void _IO_wsetb
__P ((_IO_FILE
*, wchar_t *, wchar_t *, int));
375 extern wint_t _IO_sputbackwc
__P ((_IO_FILE
*, wint_t));
376 extern wint_t _IO_sungetwc
__P ((_IO_FILE
*));
377 extern void _IO_wdoallocbuf
__P ((_IO_FILE
*));
378 extern void _IO_unsave_wmarkers
__P ((_IO_FILE
*));
379 extern unsigned _IO_adjust_wcolumn
__P ((unsigned, const wchar_t *, int));
381 /* Marker-related function. */
383 extern void _IO_init_marker
__P ((struct _IO_marker
*, _IO_FILE
*));
384 extern void _IO_init_wmarker
__P ((struct _IO_marker
*, _IO_FILE
*));
385 extern void _IO_remove_marker
__P ((struct _IO_marker
*));
386 extern int _IO_marker_difference
__P ((struct _IO_marker
*,
387 struct _IO_marker
*));
388 extern int _IO_marker_delta
__P ((struct _IO_marker
*));
389 extern int _IO_wmarker_delta
__P ((struct _IO_marker
*));
390 extern int _IO_seekmark
__P ((_IO_FILE
*, struct _IO_marker
*, int));
391 extern int _IO_seekwmark
__P ((_IO_FILE
*, struct _IO_marker
*, int));
393 /* Functions for iterating global list and dealing with
396 extern _IO_ITER _IO_iter_begin
__P ((void));
397 extern _IO_ITER _IO_iter_end
__P ((void));
398 extern _IO_ITER _IO_iter_next
__P ((_IO_ITER
));
399 extern _IO_FILE
*_IO_iter_file
__P ((_IO_ITER
));
400 extern void _IO_list_lock
__P ((void));
401 extern void _IO_list_unlock
__P ((void));
402 extern void _IO_list_resetlock
__P ((void));
404 /* Default jumptable functions. */
406 extern int _IO_default_underflow
__P ((_IO_FILE
*));
407 extern int _IO_default_uflow
__P ((_IO_FILE
*));
408 extern wint_t _IO_wdefault_uflow
__P ((_IO_FILE
*));
409 extern int _IO_default_doallocate
__P ((_IO_FILE
*));
410 extern int _IO_wdefault_doallocate
__P ((_IO_FILE
*));
411 extern void _IO_default_finish
__P ((_IO_FILE
*, int));
412 extern void _IO_wdefault_finish
__P ((_IO_FILE
*, int));
413 extern int _IO_default_pbackfail
__P ((_IO_FILE
*, int));
414 extern wint_t _IO_wdefault_pbackfail
__P ((_IO_FILE
*, wint_t));
415 extern _IO_FILE
* _IO_default_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
416 extern _IO_size_t _IO_default_xsputn
__P ((_IO_FILE
*, const void *,
418 extern _IO_size_t _IO_wdefault_xsputn
__P ((_IO_FILE
*, const void *,
420 extern _IO_size_t _IO_default_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
421 extern _IO_size_t _IO_wdefault_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
422 extern _IO_off64_t _IO_default_seekoff
__P ((_IO_FILE
*,
423 _IO_off64_t
, int, int));
424 extern _IO_off64_t _IO_default_seekpos
__P ((_IO_FILE
*, _IO_off64_t
, int));
425 extern _IO_ssize_t _IO_default_write
__P ((_IO_FILE
*, const void *,
427 extern _IO_ssize_t _IO_default_read
__P ((_IO_FILE
*, void *, _IO_ssize_t
));
428 extern int _IO_default_stat
__P ((_IO_FILE
*, void *));
429 extern _IO_off64_t _IO_default_seek
__P ((_IO_FILE
*, _IO_off64_t
, int));
430 extern int _IO_default_sync
__P ((_IO_FILE
*));
431 #define _IO_default_close ((_IO_close_t) _IO_default_sync)
432 extern int _IO_default_showmanyc
__P ((_IO_FILE
*));
433 extern void _IO_default_imbue
__P ((_IO_FILE
*, void *));
435 extern struct _IO_jump_t _IO_file_jumps
;
436 extern struct _IO_jump_t _IO_file_jumps_mmap attribute_hidden
;
437 extern struct _IO_jump_t _IO_file_jumps_maybe_mmap attribute_hidden
;
438 extern struct _IO_jump_t _IO_wfile_jumps attribute_hidden
;
439 extern struct _IO_jump_t _IO_wfile_jumps_mmap attribute_hidden
;
440 extern struct _IO_jump_t _IO_wfile_jumps_maybe_mmap attribute_hidden
;
441 extern struct _IO_jump_t _IO_old_file_jumps attribute_hidden
;
442 extern struct _IO_jump_t _IO_streambuf_jumps
;
443 extern struct _IO_jump_t _IO_proc_jumps attribute_hidden
;
444 extern struct _IO_jump_t _IO_old_proc_jumps attribute_hidden
;
445 extern struct _IO_jump_t _IO_str_jumps attribute_hidden
;
446 extern struct _IO_jump_t _IO_wstr_jumps attribute_hidden
;
447 extern struct _IO_codecvt __libio_codecvt attribute_hidden
;
448 extern int _IO_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
449 extern int _IO_new_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
450 extern int _IO_old_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
451 extern int _IO_wdo_write
__P ((_IO_FILE
*, const wchar_t *, _IO_size_t
));
452 extern int _IO_flush_all_lockp
__P ((int));
453 extern int _IO_flush_all
__P ((void));
454 extern int _IO_cleanup
__P ((void));
455 extern void _IO_flush_all_linebuffered
__P ((void));
456 extern int _IO_new_fgetpos
__P ((_IO_FILE
*, _IO_fpos_t
*));
457 extern int _IO_old_fgetpos
__P ((_IO_FILE
*, _IO_fpos_t
*));
458 extern int _IO_new_fsetpos
__P ((_IO_FILE
*, const _IO_fpos_t
*));
459 extern int _IO_old_fsetpos
__P ((_IO_FILE
*, const _IO_fpos_t
*));
460 extern int _IO_new_fgetpos64
__P ((_IO_FILE
*, _IO_fpos64_t
*));
461 extern int _IO_old_fgetpos64
__P ((_IO_FILE
*, _IO_fpos64_t
*));
462 extern int _IO_new_fsetpos64
__P ((_IO_FILE
*, const _IO_fpos64_t
*));
463 extern int _IO_old_fsetpos64
__P ((_IO_FILE
*, const _IO_fpos64_t
*));
466 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
467 # define _IO_do_flush(_f) \
469 ? INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \
470 (_f)->_IO_write_ptr-(_f)->_IO_write_base) \
471 : INTUSE(_IO_wdo_write)(_f, (_f)->_wide_data->_IO_write_base, \
472 ((_f)->_wide_data->_IO_write_ptr \
473 - (_f)->_wide_data->_IO_write_base)))
475 # define _IO_do_flush(_f) \
476 INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \
477 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
479 #define _IO_old_do_flush(_f) \
480 _IO_old_do_write(_f, (_f)->_IO_write_base, \
481 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
482 #define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING)
483 #define _IO_mask_flags(fp, f, mask) \
484 ((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask)))
485 #define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\
486 (fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg))
487 #define _IO_wsetg(fp, eb, g, eg) ((fp)->_wide_data->_IO_read_base = (eb),\
488 (fp)->_wide_data->_IO_read_ptr = (g), \
489 (fp)->_wide_data->_IO_read_end = (eg))
490 #define _IO_setp(__fp, __p, __ep) \
491 ((__fp)->_IO_write_base = (__fp)->_IO_write_ptr \
492 = __p, (__fp)->_IO_write_end = (__ep))
493 #define _IO_wsetp(__fp, __p, __ep) \
494 ((__fp)->_wide_data->_IO_write_base \
495 = (__fp)->_wide_data->_IO_write_ptr = __p, \
496 (__fp)->_wide_data->_IO_write_end = (__ep))
497 #define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL)
498 #define _IO_have_wbackup(fp) ((fp)->_wide_data->_IO_save_base != NULL)
499 #define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP)
500 #define _IO_have_markers(fp) ((fp)->_markers != NULL)
501 #define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base)
502 #define _IO_wblen(fp) ((fp)->_wide_data->_IO_buf_end \
503 - (fp)->_wide_data->_IO_buf_base)
505 /* Jumptable functions for files. */
507 extern int _IO_file_doallocate
__P ((_IO_FILE
*));
508 extern _IO_FILE
* _IO_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
509 extern _IO_off64_t _IO_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
510 extern _IO_off64_t _IO_file_seekoff_mmap
__P ((_IO_FILE
*, _IO_off64_t
, int,
512 extern _IO_off64_t _IO_file_seekoff_maybe_mmap
__P ((_IO_FILE
*, _IO_off64_t
,
514 extern _IO_size_t _IO_file_xsputn
__P ((_IO_FILE
*, const void *, _IO_size_t
));
515 extern _IO_size_t _IO_file_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
516 extern int _IO_file_stat
__P ((_IO_FILE
*, void *));
517 extern int _IO_file_close
__P ((_IO_FILE
*));
518 extern int _IO_file_close_mmap
__P ((_IO_FILE
*));
519 extern int _IO_file_underflow
__P ((_IO_FILE
*));
520 extern int _IO_file_underflow_mmap
__P ((_IO_FILE
*));
521 extern int _IO_file_underflow_maybe_mmap
__P ((_IO_FILE
*));
522 extern int _IO_file_overflow
__P ((_IO_FILE
*, int));
523 #define _IO_file_is_open(__fp) ((__fp)->_fileno != -1)
524 extern void _IO_file_init
__P ((struct _IO_FILE_plus
*));
525 extern _IO_FILE
* _IO_file_attach
__P ((_IO_FILE
*, int));
526 extern _IO_FILE
* _IO_file_open
__P ((_IO_FILE
*, const char *, int, int,
528 extern _IO_FILE
* _IO_file_fopen
__P ((_IO_FILE
*, const char *, const char *,
530 extern _IO_ssize_t _IO_file_write
__P ((_IO_FILE
*, const void *,
532 extern _IO_ssize_t _IO_file_read
__P ((_IO_FILE
*, void *, _IO_ssize_t
));
533 extern int _IO_file_sync
__P ((_IO_FILE
*));
534 extern int _IO_file_close_it
__P ((_IO_FILE
*));
535 extern _IO_off64_t _IO_file_seek
__P ((_IO_FILE
*, _IO_off64_t
, int));
536 extern void _IO_file_finish
__P ((_IO_FILE
*, int));
538 extern _IO_FILE
* _IO_new_file_attach
__P ((_IO_FILE
*, int));
539 extern int _IO_new_file_close_it
__P ((_IO_FILE
*));
540 extern void _IO_new_file_finish
__P ((_IO_FILE
*, int));
541 extern _IO_FILE
* _IO_new_file_fopen
__P ((_IO_FILE
*, const char *, const char *,
543 extern void _IO_no_init
__P ((_IO_FILE
*, int, int, struct _IO_wide_data
*,
544 struct _IO_jump_t
*));
545 extern void _IO_new_file_init
__P ((struct _IO_FILE_plus
*));
546 extern _IO_FILE
* _IO_new_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
547 extern _IO_FILE
* _IO_file_setbuf_mmap
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
548 extern int _IO_new_file_sync
__P ((_IO_FILE
*));
549 extern int _IO_new_file_underflow
__P ((_IO_FILE
*));
550 extern int _IO_new_file_overflow
__P ((_IO_FILE
*, int));
551 extern _IO_off64_t _IO_new_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
552 extern _IO_ssize_t _IO_new_file_write
__P ((_IO_FILE
*, const void *,
554 extern _IO_size_t _IO_new_file_xsputn
__P ((_IO_FILE
*, const void *, _IO_size_t
));
556 extern _IO_FILE
* _IO_old_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
557 extern _IO_off64_t _IO_old_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int,
559 extern _IO_size_t _IO_old_file_xsputn
__P ((_IO_FILE
*, const void *,
561 extern int _IO_old_file_underflow
__P ((_IO_FILE
*));
562 extern int _IO_old_file_overflow
__P ((_IO_FILE
*, int));
563 extern void _IO_old_file_init
__P ((struct _IO_FILE_plus
*));
564 extern _IO_FILE
* _IO_old_file_attach
__P ((_IO_FILE
*, int));
565 extern _IO_FILE
* _IO_old_file_fopen
__P ((_IO_FILE
*, const char *,
567 extern _IO_ssize_t _IO_old_file_write
__P ((_IO_FILE
*, const void *,
569 extern int _IO_old_file_sync
__P ((_IO_FILE
*));
570 extern int _IO_old_file_close_it
__P ((_IO_FILE
*));
571 extern void _IO_old_file_finish
__P ((_IO_FILE
*, int));
573 extern int _IO_wfile_doallocate
__P ((_IO_FILE
*));
574 extern _IO_size_t _IO_wfile_xsputn
__P ((_IO_FILE
*, const void *,
576 extern _IO_FILE
* _IO_wfile_setbuf
__P ((_IO_FILE
*, wchar_t *, _IO_ssize_t
));
577 extern wint_t _IO_wfile_sync
__P ((_IO_FILE
*));
578 extern wint_t _IO_wfile_underflow
__P ((_IO_FILE
*));
579 extern wint_t _IO_wfile_overflow
__P ((_IO_FILE
*, wint_t));
580 extern _IO_off64_t _IO_wfile_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
582 /* Jumptable functions for proc_files. */
583 extern _IO_FILE
* _IO_proc_open
__P ((_IO_FILE
*, const char *, const char *));
584 extern _IO_FILE
* _IO_new_proc_open
__P ((_IO_FILE
*, const char *, const char *));
585 extern _IO_FILE
* _IO_old_proc_open
__P ((_IO_FILE
*, const char *, const char *));
586 extern int _IO_proc_close
__P ((_IO_FILE
*));
587 extern int _IO_new_proc_close
__P ((_IO_FILE
*));
588 extern int _IO_old_proc_close
__P ((_IO_FILE
*));
590 /* Jumptable functions for strfiles. */
591 extern int _IO_str_underflow
__P ((_IO_FILE
*));
592 extern int _IO_str_overflow
__P ((_IO_FILE
*, int));
593 extern int _IO_str_pbackfail
__P ((_IO_FILE
*, int));
594 extern _IO_off64_t _IO_str_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
595 extern void _IO_str_finish
__P ((_IO_FILE
*, int));
597 /* Other strfile functions */
599 extern void _IO_str_init_static
__P ((struct _IO_strfile_
*, char *, int, char *));
600 extern void _IO_str_init_readonly
__P ((struct _IO_strfile_
*, const char *, int));
601 extern _IO_ssize_t _IO_str_count
__P ((_IO_FILE
*));
603 /* And the wide character versions. */
604 extern void _IO_wstr_init_static
__P ((_IO_FILE
*, wchar_t *, int, wchar_t *));
605 extern void _IO_wstr_init_readonly
__P ((_IO_FILE
*, const char *, int));
606 extern _IO_ssize_t _IO_wstr_count
__P ((_IO_FILE
*));
607 extern _IO_wint_t _IO_wstr_overflow
__P ((_IO_FILE
*, _IO_wint_t
));
608 extern _IO_wint_t _IO_wstr_underflow
__P ((_IO_FILE
*));
609 extern _IO_off64_t _IO_wstr_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
610 extern _IO_wint_t _IO_wstr_pbackfail
__P ((_IO_FILE
*, _IO_wint_t
));
611 extern void _IO_wstr_finish
__P ((_IO_FILE
*, int));
613 extern int _IO_vasprintf
__P ((char **result_ptr
, __const
char *format
,
615 extern int _IO_vdprintf
__P ((int d
, __const
char *format
, _IO_va_list arg
));
616 extern int _IO_vsnprintf
__P ((char *string
, _IO_size_t maxlen
,
617 __const
char *format
, _IO_va_list args
));
620 extern _IO_size_t _IO_getline
__P ((_IO_FILE
*,char *, _IO_size_t
, int, int));
621 extern _IO_size_t _IO_getline_info
__P ((_IO_FILE
*,char *, _IO_size_t
,
623 extern _IO_ssize_t _IO_getdelim
__P ((char **, _IO_size_t
*, int, _IO_FILE
*));
624 extern _IO_size_t _IO_getwline
__P ((_IO_FILE
*,wchar_t *, _IO_size_t
, wint_t,
626 extern _IO_size_t _IO_getwline_info
__P ((_IO_FILE
*,wchar_t *, _IO_size_t
,
627 wint_t, int, wint_t *));
628 extern double _IO_strtod
__P ((const char *, char **));
629 extern char *_IO_dtoa
__P ((double __d
, int __mode
, int __ndigits
,
630 int *__decpt
, int *__sign
, char **__rve
));
631 extern int _IO_outfloat
__P ((double __value
, _IO_FILE
*__sb
, int __type
,
632 int __width
, int __precision
, int __flags
,
633 int __sign_mode
, int __fill
));
635 extern struct _IO_FILE_plus
*_IO_list_all
;
636 extern void (*_IO_cleanup_registration_needed
) __PMT ((void));
638 /* Prototype for functions with alternative entry point. */
639 extern int _IO_flush_all_internal
__P ((void));
640 extern unsigned _IO_adjust_column_internal
__P ((unsigned, const char *, int));
642 extern int _IO_default_uflow_internal
__P ((_IO_FILE
*));
643 extern void _IO_default_finish_internal
__P ((_IO_FILE
*, int));
644 extern int _IO_default_pbackfail_internal
__P ((_IO_FILE
*, int));
645 extern _IO_size_t _IO_default_xsputn_internal
__P ((_IO_FILE
*, const void *,
647 extern _IO_size_t _IO_default_xsgetn_internal
__P ((_IO_FILE
*, void *,
649 extern int _IO_default_doallocate_internal
__P ((_IO_FILE
*));
650 extern void _IO_wdefault_finish_internal
__P ((_IO_FILE
*, int));
651 extern wint_t _IO_wdefault_pbackfail_internal
__P ((_IO_FILE
*, wint_t));
652 extern _IO_size_t _IO_wdefault_xsputn_internal
__P ((_IO_FILE
*, const void *,
654 extern _IO_size_t _IO_wdefault_xsgetn_internal
__P ((_IO_FILE
*, void *,
656 extern int _IO_wdefault_doallocate_internal
__P ((_IO_FILE
*));
657 extern wint_t _IO_wdefault_uflow_internal
__P ((_IO_FILE
*));
659 extern int _IO_file_doallocate_internal
__P ((_IO_FILE
*));
660 extern _IO_FILE
* _IO_file_setbuf_internal
__P ((_IO_FILE
*, char *,
662 extern _IO_off64_t _IO_file_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
664 extern _IO_size_t _IO_file_xsputn_internal
__P ((_IO_FILE
*, const void *,
666 extern _IO_size_t _IO_file_xsgetn_internal
__P ((_IO_FILE
*, void *,
668 extern int _IO_file_stat_internal
__P ((_IO_FILE
*, void *));
669 extern int _IO_file_close_internal
__P ((_IO_FILE
*));
670 extern int _IO_file_close_it_internal
__P ((_IO_FILE
*));
671 extern int _IO_file_underflow_internal
__P ((_IO_FILE
*));
672 extern int _IO_file_overflow_internal
__P ((_IO_FILE
*, int));
673 extern void _IO_file_init_internal
__P ((struct _IO_FILE_plus
*));
674 extern _IO_FILE
* _IO_file_attach_internal
__P ((_IO_FILE
*, int));
675 extern _IO_FILE
* _IO_file_fopen_internal
__P ((_IO_FILE
*, const char *,
677 extern _IO_ssize_t _IO_file_read_internal
__P ((_IO_FILE
*, void *,
679 extern int _IO_file_sync_internal
__P ((_IO_FILE
*));
680 extern _IO_off64_t _IO_file_seek_internal
__P ((_IO_FILE
*, _IO_off64_t
, int));
681 extern void _IO_file_finish_internal
__P ((_IO_FILE
*, int));
683 extern _IO_size_t _IO_wfile_xsputn_internal
__P ((_IO_FILE
*, const void *,
685 extern _IO_off64_t _IO_wfile_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
687 extern wint_t _IO_wfile_sync_internal
__P ((_IO_FILE
*));
689 extern int _IO_str_underflow_internal
__P ((_IO_FILE
*));
690 extern int _IO_str_overflow_internal
__P ((_IO_FILE
*, int));
691 extern int _IO_str_pbackfail_internal
__P ((_IO_FILE
*, int));
692 extern _IO_off64_t _IO_str_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
694 extern void _IO_str_init_static_internal
__P ((struct _IO_strfile_
*, char *,
697 extern struct _IO_jump_t _IO_file_jumps_internal attribute_hidden
;
698 extern struct _IO_jump_t _IO_wfile_jumps_internal attribute_hidden
;
700 extern struct _IO_FILE_plus
*_IO_list_all_internal attribute_hidden
;
702 extern void _IO_link_in_internal
__P ((struct _IO_FILE_plus
*));
703 extern int _IO_sputbackc_internal
__P ((_IO_FILE
*, int));
704 extern void _IO_wdoallocbuf_internal
__P ((_IO_FILE
*));
706 extern _IO_size_t
_IO_sgetn_internal (_IO_FILE
*, void *, _IO_size_t
);
707 extern void _IO_flush_all_linebuffered_internal
__P ((void));
708 extern int _IO_switch_to_wget_mode_internal
__P ((_IO_FILE
*));
709 extern void _IO_unsave_markers_internal
__P ((_IO_FILE
*));
710 extern void _IO_switch_to_main_wget_area_internal
__P ((_IO_FILE
*));
711 extern int _IO_wdo_write_internal
__P ((_IO_FILE
*, const wchar_t *,
713 extern int _IO_do_write_internal
__P ((_IO_FILE
*, const char *, _IO_size_t
));
714 extern _IO_ssize_t
_IO_padn_internal (_IO_FILE
*, int, _IO_ssize_t
);
715 extern _IO_size_t _IO_getline_info_internal
__P ((_IO_FILE
*,char *,
716 _IO_size_t
, int, int,
718 extern _IO_size_t _IO_getline_internal
__P ((_IO_FILE
*, char *, _IO_size_t
,
720 extern void _IO_free_wbackup_area_internal (_IO_FILE
*);
721 extern void _IO_free_backup_area_internal (_IO_FILE
*);
722 extern void _IO_switch_to_wbackup_area_internal
__P ((_IO_FILE
*));
723 extern void _IO_setb_internal
__P ((_IO_FILE
*, char *, char *, int));
724 extern wint_t _IO_sputbackwc_internal
__P ((_IO_FILE
*, wint_t));
725 extern int _IO_switch_to_get_mode_internal
__P ((_IO_FILE
*));
726 extern int _IO_vfscanf_internal (_IO_FILE
* __restrict
,
727 const char * __restrict
,
728 _IO_va_list
, int *__restrict
);
729 extern int _IO_vfprintf_internal (_IO_FILE
*__restrict
, const char *__restrict
,
731 extern void _IO_doallocbuf_internal
__P ((_IO_FILE
*));
732 extern void _IO_wsetb_internal
__P ((_IO_FILE
*, wchar_t *, wchar_t *, int));
733 extern _IO_off64_t
_IO_seekoff_internal (_IO_FILE
*, _IO_off64_t
, int, int);
734 extern _IO_off64_t
_IO_seekpos_internal (_IO_FILE
*, _IO_off64_t
, int);
735 extern int _IO_putc_internal (int __c
, _IO_FILE
*__fp
);
736 extern void _IO_init_internal
__P ((_IO_FILE
*, int));
737 extern void _IO_un_link_internal
__P ((struct _IO_FILE_plus
*));
743 # if defined __GNUG__ && \
744 (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
745 # define NULL (__null)
747 # if !defined(__cplusplus)
748 # define NULL ((void*)0)
759 # include <sys/mman.h>
760 # include <sys/param.h>
762 # if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
763 # define MAP_ANONYMOUS MAP_ANON
766 # if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
768 # define _G_HAVE_MMAP 0
771 #endif /* _G_HAVE_MMAP */
776 /* When using this code in the GNU libc we must not pollute the name space. */
778 # define munmap __munmap
779 # define ftruncate __ftruncate
782 # define ROUND_TO_PAGE(_S) \
783 (((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1))
785 # define FREE_BUF(_B, _S) \
786 munmap ((_B), ROUND_TO_PAGE (_S))
787 # define ALLOC_BUF(_B, _S, _R) \
789 (_B) = (char *) mmap (0, ROUND_TO_PAGE (_S), \
790 PROT_READ | PROT_WRITE, \
791 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
792 if ((_B) == (char *) MAP_FAILED) \
795 # define ALLOC_WBUF(_B, _S, _R) \
797 (_B) = (wchar_t *) mmap (0, ROUND_TO_PAGE (_S), \
798 PROT_READ | PROT_WRITE, \
799 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
800 if ((_B) == (wchar_t *) MAP_FAILED) \
804 #else /* _G_HAVE_MMAP */
806 # define FREE_BUF(_B, _S) \
808 # define ALLOC_BUF(_B, _S, _R) \
810 (_B) = (char*)malloc(_S); \
814 # define ALLOC_WBUF(_B, _S, _R) \
816 (_B) = (wchar_t *)malloc(_S); \
821 #endif /* _G_HAVE_MMAP */
824 # define OS_FSTAT fstat
827 extern _IO_ssize_t _IO_read
__P ((int, void *, _IO_size_t
));
828 extern _IO_ssize_t _IO_write
__P ((int, const void *, _IO_size_t
));
829 extern _IO_off64_t _IO_lseek
__P ((int, _IO_off64_t
, int));
830 extern int _IO_close
__P ((int));
831 extern int _IO_fstat
__P ((int, struct stat
*));
832 extern int _IO_vscanf
__P ((const char *, _IO_va_list
));
834 /* _IO_pos_BAD is an _IO_off64_t value indicating error, unknown, or EOF. */
836 # define _IO_pos_BAD ((_IO_off64_t) -1)
838 /* _IO_pos_adjust adjust an _IO_off64_t by some number of bytes. */
839 #ifndef _IO_pos_adjust
840 # define _IO_pos_adjust(pos, delta) ((pos) += (delta))
842 /* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */
844 # define _IO_pos_0 ((_IO_off64_t) 0)
852 /* check following! */
853 # ifdef _IO_USE_OLD_IO_FILE
854 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
855 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
856 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
857 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock }
859 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
860 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
861 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
862 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
863 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
866 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
867 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
868 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
869 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
874 # ifdef _IO_USE_OLD_IO_FILE
875 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
876 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
877 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
880 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
881 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
882 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
883 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
884 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
887 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
888 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
889 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
890 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
896 /* VTABLE_LABEL defines NAME as of the CLASS class.
897 CNLENGTH is strlen(#CLASS). */
899 # if _G_VTABLE_LABEL_HAS_LENGTH
900 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
901 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CNLENGTH #CLASS);
903 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
904 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS);
906 #endif /* __GNUC__ */
908 #if !defined(builtinbuf_vtable) && defined(__cplusplus)
910 VTABLE_LABEL(builtinbuf_vtable
, builtinbuf
, 10)
912 # if _G_VTABLE_LABEL_HAS_LENGTH
913 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf
915 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf
918 #endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */
920 #if defined(__STDC__) || defined(__cplusplus)
921 # define _IO_va_start(args, last) va_start(args, last)
923 # define _IO_va_start(args, last) va_start(args)
926 extern struct _IO_fake_stdiobuf _IO_stdin_buf
, _IO_stdout_buf
, _IO_stderr_buf
;
929 # define COERCE_FILE(FILE) /* Nothing */
931 /* This is part of the kludge for binary compatibility with old stdio. */
932 # define COERCE_FILE(FILE) \
933 (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) == _OLD_MAGIC_MASK \
934 && (FILE) = *(FILE**)&((int*)fp)[1])
938 # define MAYBE_SET_EINVAL __set_errno (EINVAL)
940 # define MAYBE_SET_EINVAL /* nothing */
944 # define CHECK_FILE(FILE, RET) \
945 if ((FILE) == NULL) { MAYBE_SET_EINVAL; return RET; } \
946 else { COERCE_FILE(FILE); \
947 if (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \
948 { MAYBE_SET_EINVAL; return RET; }}
950 # define CHECK_FILE(FILE, RET) COERCE_FILE (FILE)